Informationssignalwiedergabesteuersystem

ADDITIONAL INFORMATION SIGNAL SUPERIMPOSING AND DETECTING SYSTEM, ADDITIONAL INFORMATION SIGNAL SUPERIMPOSING AND DETECTING METHOD, AND ADDITIONAL INFORMATION SIGNAL DETECTING METHOD AND APPARATUS THEREFOR

Video signals are converted into one or more blocks for each predetermined unit amount of data, and a DCT process is performed in this block unit to convert the video signal from a time-base area signal to a DCT coefficient in a frequency area for data compression. As regards additional information consisting of spread spectrum signals, 1 chip of the spread spectrum signal is allocated to each block of the video signal or to each plural blocks, and the additional information is superimposed on the video signal as a constant level corresponding to the chip value for transmission. The video signal on which the additional information consisting of the spread spectrum signal transmitted has been superimposed is received, and from this received signal, the DC component of the DCT coefficient is extracted. Inverse spread process is performed for the DC component of the DCT coefficient extracted to detect the additional information.

METHOD AND APPARATUS FOR SUPERIMPOSING ADDITIONAL INFORMATION SIGNAL TO VIDEO SIGNAL

On the occasion of superimposing a spectrum spread additional information signal obtained by spectrum spreading the additional information such as a duplication preventing control information and a copy right information, etc. to a video signal, the edge portion of an image of the video signal is detected to set the level of a part of the spectrum spread additional information signal higher than the other part in the part corresponding to the edge portion for the purpose of superimposing such additional signal to the video signal Thereby, the additional information signal can easily be detected, without deteriorating the reproduced image.

INFORMATION SIGNAL PROCESSING UNIT

A new additional information generating section generates new additional information FS1 based upon information from an additional information reading section. The spectrum of the new additional information FS1 is spread by an SS additional information generating section and supplied to a signal superimposing section as SS additional information SF1. The signal superimposing section generates a digital video signal S2 by superimposing the SS additional information SF1 on a digital video signal S1. A writing section records the digital video signal S2 on which the SS additional information SF1 is superimposed on a recording medium. Hereby, adding additional information to an information signal without deteriorating the quality of the read information signal so that the falsification and deletion are disabled, detecting the additional information added to the information signal if necessary and utilizing it are enabled.

METHOD OF AND APPARATUS FOR RESTRICTING COPY OF DIGITAL INFORMATION, AND APPARATUS FOR RECORDING DIGITAL INFORMATION

Video signal transmission method, superimposed information extraction method, video signal output device, video signal recording device, and video signal

The output device generates the PN code string every second chip interval with reference to the video sync signal, and spectrally spreads the additional information using this PN code string. The spectrally spread additional information is superimposed on the video signal every second chip interval and outputted. Upon receiving the video signal, in the recording device for recording the video signal on a recording medium, the video signal component is canceled each other between the video signal component in the chip interval on which the additional information is superimposed and the video signal component in the chip interval on which the additional information is not superimposed because of the correlation of the video signal in the horizontal direction, and only the additional information is extracted.

Additional information transmission method, additional information transmission system, information signal output apparatus, information signal processing apparatus information signal recording apparatus and information signal recording medium

To enhance the concealment characteristics of additional information transmitted, as electronic watermark information, together with an information signal and to surely and accurately transmit the additional information. A PN code string generated by a PN generation section 4 is superimposed such that a block in which the PN code string is superimposed on a video signal recorded on a DVD 100 and that in which the PN code string is not superimposed thereon by a pattern switching section 5 based on an attribute pattern from a superimposition pattern generation section 7 and the additional information on the video signal recorded on the DVD 100 is transmitted by the superimposition/non-superimposition pattern of this PN code string. To superimpose a plurality of additional information on an information signal and to surely provide the information signal to the other side using electronic watermark information, and to allow the side supplied with the information signal to surely and accurately ...

Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium

A playback device 10 generates a PN code with a start timing based on a video sync signal, and generates a pseudo random noise (PN) inverse code which has a reverse polarity to that of the PN code with a timing based on the video sync signal. An anti-duplication control signal is spectrally spread using this PN code, superimposed on the video signal and supplied to a recording device. A PN inverse code which is the same as the PN inverse code used in the playback device is also generated in the recording device based on the video sync signal, and reverse spectral spread is performed using this PN inverse code.

Method and apparatus for superimposing additional information signal to video signal

On the occasion of superimposing a spectrum spread additional information signal obtained by spectrum spreading the additional information such as a duplication preventing control information and a copy right information, etc. to a video signal, the edge portion of an image of the video signal is detected to set the level of a part of the spectrum spread additional information signal higher than the other part in the part corresponding to the edge portion for the purpose of superimposing such additional signal to the video signal. Thereby, the additional information signal can easily be detected, without deteriorating the reproduced image.

Security documents with hidden digital data

An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive action can thereby be taken. The technique can be applied in video imagery embodiments to control associated video equipment, e.g. to serve as a copy control signal.

Video signal transmission method, superimposed information extraction method, video signal output device, video signal recording device, and video signal recording medium

The output device generates the PN code string every second chip interval with reference to the video sync signal, and spectrally spreads the additional information using this PN code string. The spectrally spread additional information is superimposed on the video signal every second chip interval and outputted. Upon receiving the video signal, in the recording device for recording the video signal on a recording medium, the video signal component is canceled each other between the video signal component in the chip interval on which the additional information is superimposed and the video signal component in the chip interval on which the additional information is not superimposed because of the correlation of the video signal in the horizontal direction, and only the additional information is extracted.

A METHOD AND DEVICE FOR SUPERIMPOSING ADDITIONAL INFORMATION ON A VIDEO SIGNAL

An additional information signal is superimposed on a video signal at a very low level so that it does not stand out on the reproduced image. Spectral spreading code sequences are generated corresponding to different predetermined parts of the video signal. Bit information signals of the additional information signal comprising plural bits are spectrally spread by the spreading codes to generate spectrally spread bit information signals corresponding to the plural bits. The spectrally spread bit information signals are superimposed on corresponding different predetermined parts of the video signal. As high priority bit information signals of the spectrally spread additional information signal are superimposed on high priority parts of the video signal, high priority information in the additional information can be protected even if the video signal is modified.

VIDEO SIGNAL RECORDING APPARATUS AND METHOD

An additional information produced by an additional information signal producing means is spectrum-spread by a spectrum spreading code generated on the basis of the timing of the synchronous signal of digital video signal and is then added to the digital video signal by means of a signal adding means. The digital video signal to which the spectrum spread additional information signal is added is then written into a recording medium by a signal writing means Thereby, the additional information signal can be added to the video signal under the condition that the reproducing quality of the video signal is never deteriorated and alteration and deletion are impossible and moreover the additional information signal can be detected for use as required from the video signal.

ADDITIONAL INFORMATION TRANSFER APPARATUS

PURPOSE: An additional information transfer apparatus is provided to increase a concealment characteristic of additional information transferred with an information signal as electronic watermark information, and to transfer the additional information exactly and securely. CONSTITUTION: An additional information transfer apparatus comprises a timing control part(3) which detects a vertical synchronous timing signal(V) and a horizontal synchronous timing signal(H) from am image signal. The timing control part(3) generates a PN code reset timing signal(RE), a PN code enable signal(EN), a block signal(KS), and a PN clock signal(PNCLK). The reset timing signal indicates a start timing when a PN code is generated, and the enable signal indicates a block where the PN code is generated. The block signal(KS) indicates a block, in which a spectrum spreading signal is added, and a block, in which the spectrum spreading signal is not added. A PN generation section(4) generates a PN code stream(PS) ...

METHOD FOR MANAGING COPY GENERATION, INFORMATION SIGNAL RECORD DEVICE, INFORMATION SIGNAL OUTPUT DEVICE, AND INFORMATION SIGNAL REPRODUCTION DEVICE

PURPOSE: A method for managing copy generation, an information signal record device, an information signal output device, and an information signal reproduction device are provided to control the copy of an information signal such as an image signal. CONSTITUTION: A method for managing copy generation is characterized by performing are-record management of other additional information on the basis of additional information according to an electronic water mark information. An information signal record device comprises a detection portion for detecting an electronic water mark information, a record control portion for controlling the permission of a record, and a re-recording portion for performing the re-record of output information. An information signal output device comprises a detection portion for detecting an electronic water mark information and a re-recording portion for performing the re-record of output information. An information signal reproduction device comprises a detection ...

METHOD AND SYSTEM FOR PROTECTING DIGITAL DATA FROM UNAUTHORIZED COPYING

Selon l'invention, on empêche un copiage non autorisé par un nouveau cryptage d'une version non autorisée des données, ou par un décryptage d'une version autorisée des données, ce que l'on effectue au moyen d'un signal de déclenchement, lequel est encastré dans les données, afin de former des données filigranées. Les données éventuellement protégées ou filigranées sont converties en données éventuellement utilisables, par extraction du signal de déclenchement et vérification de la valeur (cf. la figure). Les données éventuellement protégées sont passées à travers un dispositif de décryptage (30) dans lequel le signal de déclenchement, s'il est présent, est extrait. Une clé et un algorithme de décryptage (40) sont alors appliqués aux données éventuellement protégées si le signal de déclenchement est présent, mais ne sont pas appliqués à ces données si le signal de déclenchement n'est pas présent. Une propriété de ce signal est qu'il est conservé, même lors de transformation de signaux exécutée ...

Method of adding information to video signal and information adding device

When a spectrally spread additional information signal, obtained by spectrum spreading additional information such as an anti-duplication control signal or copyright information, is superimposed on a video signal, the level of the spectrally spread additional information signal is controlled according to the scatter of pixel values in each block comprising plural pixels. The sensitivity of detecting additional information from the spectrally spread additional information signal is therefore improved, and the visual effect of the spectrally spread additional information signal on a reproduced image is suppressed.

Information signal output control method, information signal duplication prevention method, information signal duplication prevention device, and information signal recording medium

If only any of a pair of an SS anti-duplication control signal S5 and copy guard signal S6 generated correlatively each other added on the video signal played back from the disk is detected, or if the specific anti-duplication control signal is not detected, the video signal recorded in the disk is judged to be an illegally duplicated video signal, and the output control signal generation section controls the output control section so as not to output the playback video signal S4.

Video signal transmission method, superimposed information extraction method, video signal output device, video signal receiving device and video recording medium

A superimposing position setting unit (15) uses a video synchronizing signal from a synchronization separating unit (14) as a reference signal, and generates a superimposing position indicating signal S4 for indicating an effective image plane interval of a video signal as a superimposing interval during which an SS duplication control signal is superimposed. A SS duplication control signal generator (16) generates a PN code sequence repeating every one vertical interval, and spreads the spectrum of a duplication control signal S3 by using the PN code sequence to form an SS duplication control signal. The SS duplication control signal is outputted to the effective image plane interval on the basis of the superimposing position indicating signal S4, and is superimposed on the video signal during the effective image plane interval of the video signal by an adder (17). Thus, the method according to the invention is able to prevent removal and deterioration of added information spread in spectrum ...

Dateneinbau in ein Videosignal.

Method of and apparatus for restricting copy of digital information and apparatus for recording digital information

Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium

A playback device 10 generates a PN code with a start timing based on a video sync signal, and generates a pseudo random noise (PN) inverse code which has a reverse polarity to that of the PN code with a timing based on the video sync signal. An anti-duplication control signal is spectrally spread using this PN code, superimposed on the video signal and supplied to a recording device. A PN inverse code which is the same as the PN inverse code used in the playback device is also generated in the recording device based on the video sync signal, and reverse spectral spread is performed using this PN inverse code.

EQUIPMENT AND PROCEDURE FOR THE SYNTHESIS OF AN INFORMATION SIGNAL AND A RENDITION OF CONTROL SIGNAL AND EQUIPMENT FOR THE INFORMATION SIGNAL RECORDING

PROCEDURE AND SYSTEM FOR THE PROTECTION OF DIGITAL DATA OF NICHTAUTHORISIERTEM COPYING

METHOD AND SYSTEM FOR PROTECTING DIGITAL DATA FROM UNAUTHORIZED COPYING

Data is protected from unauthorized copying by rescrambling an unauthorized version of the data, but descrambling an authorized version of the data. This is done using a trigger signal. The trigger signal is embbeded into the data to form watermarked data. The possibly protected data or watermarked data is converted to possibly usable data by extracting the trigger signal and checking the value as show in the figure. The possibly protected data is passed through a descrambler (30), where the trigger signal, if present, is extracted. A descrambling key and a descrambling algorithm (40) are applied to the possibly protected data if the trigger signal is present, but not applied to the possibly protected data if the trigger signal is not present. One property of the trigger signal is that it is preserved through signal transformation, such as one or more compression, decompression, analog to digital conversion, and digital to analog conversion. As a result of this property the trigger signal can be detected in either scrambled or descrambled data.

Embedment of data in a video signal

Information output device, information recording device, information duplication control system and recording medium of the same

The invention intends to secure the control of duplicating information signals. In the duplication control method according to the invention, a main information signal containing a duplication control information transformed into a spread spectrum signal to be superimposed and a duplication control information superimposed by a processing different from the spectrum spreading is transmitted. The duplication control information transformed into a spread spectrum signal is extracted from the main information signal by the reverse spectrum spreading, and the duplication control information superimposed by the different processing is extracted from the main information signal. One information most closest to duplication prohibition is selected as an output duplication control information out of the plural extracted duplication control information. On the basis of the selected output duplication control information, the main information signal is controlled on duplication.

СПОСОБ И УСТРОЙСТВО ОГРАНИЧЕНИЯ ВОЗМОЖНОСТИ КОПИРОВАНИЯ ЦИФРОВОЙ ИНФОРМАЦИИ И УСТРОЙСТВО ЗАПИСИ ЦИФРОВОЙ ИНФОРМАЦИИ (ВАРИАНТЫ)

FIELD: copy protection technologies. SUBSTANCE: method includes detection step including detection of first water-mark inserted into digital information, which contains first signal generated on basis of first rule, as well as insertion step, including insertion of second water-mark, which contains second signal, generated on basis of second rule and having structure different from structure of first signal, into digital information, in case if first water-mark is detected at detection step. Device has detection device meant for detecting said first water-mark inserted into digital information, and insertion device meant for inserting said second water-mark into digital information, in case if detection device detects first water-mark. EFFECT: higher effectiveness, higher productiveness. 6 cl, 11 dwg ЕЭстусс ПЧ сэ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК? ВИ” 2 244 261‘ 13) С2 С 11 В 20/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99125657/28, 02.12.1999 (24) Дата начала действия патента: 02.12.199911.1-26 (30) Приоритет: 03.12.1998 УР 10-344075 (43) Дата публикации заявки: 10.10.2001 (45) Дата публикации: 27.11.2004 (56) Ссылки: МО 9713248 А1, 10.04.1997. ЕР 860997 А2, 26.08.1998. \МО 8502293 АЛ, 23.05.1985. КИ 98122638 А, 20.02.1998. 5Ц 1836121 АЗ, 23.08.1993. (98) Адрес для переписки: 103735, Москва, ул.Ильинка, 5/2, ООО "Союзпатент", пат.пов. Л.И.Ятровой (72) Изобретатель: ЙОСИУРА Хироси (+Р), КИМУРА Хироюки ()Р), ОГИНО Акира (УР), МОРИЯМА Йосиаки (/Р), СУГАЯ Казуми (УР) (73) Патентообладатель: ПАЙЭНИЕР КОРПОРЕЙШН (.Р), ХИТАЧИ ЛИМИТЕД (.Р), СОНИ КОРПОРЕЙШН (.Р) (74) Патентный поверенный: Ятрова Лариса Ивановна (54) СПОСОБ И УСТРОЙСТВО ОГРАНИЧЕНИЯ ВОЗМОЖНОСТИ КОПИРОВАНИЯ ЦИФРОВОЙ ИНФОРМАЦИИ И УСТРОИСТВО ЗАПИСИ ЦИФРОВОИ ИНФОРМАЦИИ (ВАРИАНТЫ) (57) Изобретение относится к средствам ограничения несанкционированного копирования. Способ включает в себя этап обнаружения, заключающийся в обнаружении первого ...

Vervielfältigungskontrolle eines Informationssignals

METHOD AND DEVICE FOR ADDING INFORMATION TO VIDEO SIGNAL, METHOD AND DEVICE FOR DETECTION INFORMATION FROM VIDEO SIGNAL, AND RECORDING MEDIUM

An additional information is spectrally spread and superimposed on a video signal over a plurality of fields, and the superimposed additional information is detected easily. A time code information is spectrally spread using the first spectrally spreading code string synchronous to the video signal, and the spectral spread signal of the time code information is superimposed on the video signal. An additional information is spectrally spread using the second spectrally spreading code string generated synchronously to the sync signal of the video signal and having a different period or different content corresponding to the time code information, and the spectral spread signal of the additional information is superimposed on the video signal.

COPY GENERATION MANAGEMENT METHOD, INFORMATION SIGNAL REPRODUCING METHOD, INFORMATION SIGNAL REPRODUCING APPARATUS, AND INFORMATION SIGNAL RECORDING APPARATUS

A reproducing method and apparatus includes a system for controlling copy generation by adding a piece of copy control information to an information signal. The reproducing apparatus according to the invention can essentially disable reproduction of information signals from an illegally copied recording medium, and can prevent illicit copying effectively. Accordingly, a reproducing and/or recording system is provided, in which copy generation of an information signal is controlled through the use of copy control information that is added to the information signal. The copy control information takes on at least one of three possible states, a one-copy allowed state, a more-copy prohibited state and a copy absolutely prohibited state. The system determines an initial copy control state for the signal being reproduced and determines the state of copy control information to be added to the reproduced signal based on at least the initial copy control information. During recording it may be determined ...

Recording medium and manufacturing method thereof, reproducing method and reproducing device

The present invention, records a list of video fingerprint recognition data in a nonvolatile memory 18, wherein the video fingerprint recognition data is extracted from of the latest video contents features provided by a copyright management server certified by a digital video disc 160 and a management mechanism 120. When reproducing of the video contents recorded in the disc 160, the features are extracted by computation 187 of the fingerprint recognition data so as to obtain the video fingerprint recognition data. When the data are included in the list, unauthorized reproduction of the disc 160 is limited until the copyright manager approves it.

Method and apparatus for superimposing additional information signal to video signal

Streaming piracy detection method and system

In one embodiment, a command is received from a video provider at a media rendering device, the command being a command to embed a subscriber ID in at least one video frame in a video stream. A random key, k is also received from the video provider at the media rendering device. An injective transformation is invoked for k and the subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods. Logical blocks of the at least one video frame in the video stream are overlaid with one of the near-transparent patterns for its one of the corresponding time periods. Related apparatus, systems, and methods are also described.

Information signal copy managing method, information signal recording method, information signal output apparatus, and recording medium

An information signal copy managing method for properly protecting the copyright of information signals and, at the same time, guaranteeing user advantages in copying information signals within a limited range. Information indicative of the start and end of each piece of information content covered by copyright is superimposed thereon as electronic watermark information. The resultant information signal is transmitted. When the received information signal is copied, both the information indicative of the start of the information content and the information indicative of the end thereof are detected from the electronic watermark information, determining the completion of copying. Thus, copying of information content is managed.

DATA PROCESSING APPARATUS, DATA PROCESSING METHOD, AND PROGRAM

The present invention provides a copy control technique using digital watermark information, which makes it possible to prevent a content from being erroneously subjected to a copy control process according to wrong copy control information at a content-to-content transition. Copy control information in the form of digital watermark information (WM) is embedded in a content to control copying of the content in accordance with the embedded copy control information. A content-to-content transition is detected by detecting a change in a content state such as a change in image luminance, or a change in copy control information associated with a content or is detected on the basis of a flag, a descriptor, or channel switching. In response to detection of a content-to-content transition, a reset signal is output to a WM analyzer to reset current copy control information into a "undefined" state so that copy control is performed in a mode such as a copy-free mode assigned to the "undefined" state ...

DATA PROCESSOR, DATA PROCESSING METHOD, DATA REPRODUCING DEVICE AND DATA RECORDER

PROBLEM TO BE SOLVED: To propose a data processor, a data processing method, a data reproducing device and a data recorder capable of detecting digital water mark information though various kinds of working processing is applied to data. SOLUTION: The working history of data is measured and the output of worked data is restricted in accordance with the measured working history to prevent the working state of the data from being continued. Consequently, when recording restricting information to the medial of the data is added to the data, the output of worked data is restricted in accordance with the working history of the data to prevent difficulty in the detection of recording restricting information due to working from being continued. COPYRIGHT: (C)2001,JPO ...

Method of and apparatus for restricting copy of digital information and apparatus for recording digital information

INFORMATION SIGNAL OUTPUT CONTROL METHOD, INFORMATION SIGNAL DUPLICATION PREVENTION METHOD, INFORMATION SIGNAL DUPLICATION PREVENTION DEVICE, AND INFORMATION SIGNAL RECORDING MEDIUM

If only any one of a pair of an SS anti-duplication control signal S5 and copy guard signal S6 generated correlatively each other added on the video signal played back from the disk is detected, or if the specific anti-duplication control signal is not detected, the video signal recorded in the disk is judged to be an illegally duplicated video signal, and the output control signal generation section controls the output control section so as not to output the playback video signal S4.

ADDITIONAL INFORMATION SUPERIMPOSITION DEVICE

Additional information is superimposed consistently while the disturbance of a picture due to excessive superimposition is suppressed The device superimposes a spectrally spread additional information on a video signal. Inverse spread processing is performed on the video signal, and an SS additional information detection means detects whether additional information is superimposed already on the video signal. Based on the detection result performed by the additional information detection means, superimposition of the spectrally spread signal supplied from the spectrally spread signal generation means on the video signal is controlled. A superimposition control method such as superimposition ON/OFF control, superimposition level control, or spread code string control is performed.

Anlage zum Überlagern von Zusatzinformation

METHOD OF ADDING INFORMATION TO VIDEO SIGNAL AND INFORMATION ADDING DEVICE

When a spectrally spread additional information signal, obtained by spectrum spreading additional information such as an anti-duplication control signal or copyright information, is superimposed on a video signal, the level of the spectrally spread additional information signal is controlled according to the scatter of pixel values in each block comprising plural pixels. The sensitivity of detecting additional information from the spectrally spread additional information signal is therefore improved, and the visual effect of the spectrally spread additional information signal on a reproduced image is suppressed.

Information signal reproduction control system

A synthetic information signal generated by superimposing one spreading code selected out of predetermined plural spectrum spreading codes different in a phase or a code series on a main information signal is output according to a reproduction control signal for controlling the prohibition and the allowance of recording the above main information signal on a recording medium, a reproduction control signal according to the result of detecting the spreading code in the synthetic signal is generated and the main information signal is recorded on the recording medium according to the reproduction control signal.

PROJECTION SYSTEM BASED ON METAMERISM

Dateneinbau in ein Videosignal.

Transaction fingerprint for video distributed over the internet

APPARATUS AND METHOD FOR SYNTHESIZING INFORMATION SIGNAL AND REPRODUCTION CONTROL SIGNAL AND INFORMATION SIGNAL RECORDING APPARATUS

A synthesis signal which was reproduced from a reproducing apparatus and converted into an analog signal includes an analog information signal and a copy control code. The copy control code is modulated by a spread spectrum. A code reading unit of the recording apparatus extracts a copy control code by an inverse spread spectrum. A code changing unit changes the copy control code by a spread spectrum as necessary. An output signal of the code changing unit is converted into a digital signal. The digital signal is subjected to processes necessary for recording and is recorded to a recording medium.

METHOD AND APPARATUS OF DETECTING SPECTRUM SPREAD SIGNAL

In an SS additional information detecting unit, detection of a correlation between an image signal Si super imposed with a copying preventive control signal which is spectrum-spread and a PN code series is carried out at every vertical section. In the case where a correlation value between the copying preventive control signal which is superimposed on the image signal Si and is spectrum-spread and a PN code for inverse spreading does not exceed a predetermined threshold value, the correlation value calculated at every vertical section is added. The copying preventive control signal which is spectrum-spread and is superimposed on the image signal is detected by changing the threshold value of whether the correlation between the copying preventive control signal which is superimposed on the image signal Si and is spectrum-spread and the PN code for inverse spreading is established in accordance with a number of vertical sections constituting an object of detecting the correlation. Thereby ...

INFORMATION SIGNAL RECORDING/REPRODUCING SYSTEM, INFORMATION SIGNAL RECORDING DEVICE, INFORMATION SIGNAL REPRODUCING DEVICE AND INFORMATION SIGNAL RECORDING/REPRODUCING PROCESS

When digital image signals inputted through an inputting terminal are recorded on a disc, a medium-related information (a serial number in an TOC) of the disc, read from the disc, with a medium related information reading section is spectrum-spread in an SS additional information generating section and then digital image signals S2 on which the spectrum-spread medium-related information is superimposed in an SS additional information superimposing section are recorded on the disc. When the signals attempt to be reproduced, the reproduction can be performed in the case wherein the medium-related information superimposed on the image signals recorded on the disc is consistent with the medium-related information of the disc on which the image signals are recorded. Thus, copying of the information signals can be limited to the copying for private use.

METHOD AND APPARATUS FOR SUPERIMPOSING ADDITIONAL INFORMATION SIGNAL TO VIDEO SIGNAL

Visual influence on the reproduced image by the spectrum spread additional information signal can be controlled on he reproduced image by sequentially changing the level of the spectrum spread additional information signal with the predetermined pattern in each chip section on the occasion of superimposing, to the video signal, the spectrum spread additional information signal in which the additional information such as duplication preventing control information and copy right information, etc. is spectrum spread.

INFORMATION SIGNAL COPYRIGHT PROTECTION METHOD, INFORMATION SIGNAL RECORDING METHOD AND DEVICE, AND INFORMATION SIGNAL OUTPUT METHOD AND DEVICE

A copyright protection method and apparatus, an output method and device, and a recording method and device for protecting information signals that are transmitted and stored in both a baseband signal status and a compressed encoded data status are provided. The method includes the stops of superimposing a first copyright protection information as a digital watermark on a signal in a baseband state, and compression encoding the signal in the baseband to form an information signal in a compressed encoded data state. The signal in the baseband and the signal in the compressed encoded data are then transmitted from a first apparatus to a second apparatus. The second apparatus determines whether rewriting of the first copyright protection information superimposed on the signal in the baseband and the signal in the compressed encoded data state is necessary, and if it is determined that rewriting of the first copyright protection information is necessary, rewriting the first copyright protection ...

Additional information superimposition device

Additional information is superimposed consistently while the disturbance of a picture due to excessive superimposition is suppressed. The device superimposes a spectrally spread additional information on a video signal. Inverse spread processing is performed on the video signal, and an SS additional information detection circuit detects whether additional information is superimposed already on the video signal. Based on the detection result performed by the additional information detection circuit, superimposition of the spectrally spread signal supplied from the spectrally spread signal generator on the video signal is controlled. A superimposition control method such as superimposition ON/OFF control, superimposition level control, or spread code string control is performed.

Methods for detecting alteration of audio

The adage "photos don't lie" is no longer reliable. The advent of digital editing tools makes it relatively easy to move, add, or delete features from photographs. Audio content is similarly susceptible to alteration. This problem is at least partially overcome by providing the content with supplemental data that is below a threshold of human perception. If a version of the content is thereafter encountered with the supplemental data missing or attenuated, it is known to have been altered. By reference to such supplemental data, it is often possible to identify particular portions of the content that have been altered.

APPARATUS AND METHOD FOR SYNTHESIZING INFORMATION SIGNAL ANDREPRODUCTION CONTROL SIGNAL AND INFORMATION SIGNAL RECORDING APPARATUS

A synthesis signal which was reproduced from a reproducing apparatus and converted into an analog signal includes an analog information signal and a copy control code. The copy control code is modulated by a spread spectrum. A code reading unit of the recording apparatus extracts a copy control code by an inverse spread spectrum. A code changing unit changes the copy control code by a spread spectrum as necessary. An output signal of the code changing unit is converted into a digital signal. The digital signal is subjected to processes necessary for recording and is recorded to a recording medium.

ADDITIONAL INFORMATION TRANSMISSION METHOD, ADDITIONAL INFORMATION TRANSMISSION SYSTEM, INFORMATION SIGNAL OUTPUT APPARATUS, INFORMATION SIGNAL PROCESSING APPARATUS, INFORMATION SIGNAL RECORDING APPARATUS AND INFORMATION SIGNAL RECORDING MEDIUM

To enhance the concealment characteristics of additional information transmitted, as electronic watermark information, together with an information signal and to surely and accurately transmit the additional information. A PN code string generated by a PN generation section 4 is superimposed such that a block in which the PN code string is superimposed on a video signal recorded on a DVD 100 and that in which the PN code string is not superimposed thereon by a pattern switching section 5 based on an attribute pattern from a superimposition pattern generation section 7 and the additional information on the video signal recorded on the DVD 100 is transmitted by the superimposition/non-superimposition pattern of this PN code string. To superimpose a plurality of additional information on an information signal and to surely provide the information signal to the other side using electronic watermark information, and to allow the side supplied with the information signal to surely and accurately ...

Information signal reproduction control system

MULTI-MEDIA COPY MANAGEMENT SYSTEM

Reproduction of a data signal which is stored on a source media (140) or distributed via a communication network is controlled by inserting master tag data (130) and control tag data (160) into the data signal. A player/recorder (150) inserts an additional generation of control tag information each time a copy of the media is made. If the number of generations of the control tag information is above a threshold value, reproduction of the data signal may be inhibited. For example, if the data signal comprises audio data, the player/recorder may only allow playing of the audio signal over speakers but will not allow recording. The playing and recording of associated signals, which accompany an audio signal, may also be controlled. The master tag data (130) and control tag data (160) may be provided as spread spectrum signals which are spectrally shaped and power-adjusted according to the data signal to render them imperceptible in the data signal.

Information signal recording/reproducing system, information signal recording device, information signal reproducing device and information signal recording/reproducing process

When digital image signals fed in through an input terminal to be recorded on a disc, medium-related information, such as a serial number in a table of contents of the disc, is spectrum-spread in a spectrum spreading additional information generating section and the digital image signals on which the spectrum-spread medium-related information has been superimposed in an spectrum spreading additional information superimposing section are recorded on the disc. When the signals are to be reproduced, the reproduction can be performed if the medium-related information superimposed on the image signals recorded on the disc is consistent with the medium-related information of the disc on which the image signals are recorded. Thus, copying of the information signals can be limited to copying for private use.

Information signal recording/reproducing system, information signal recording device, information signal reproducing device and information signal recording/reproducing process

When digital image signals inputted through an inputting terminal are recorded on a disc, a medium-related information (a serial number in an TOC) of the disc, read from the disc, with a medium-related information reading section is spectrum-spread in an SS additional information generating section and then digital image signals S2 on which the spectrum-spread medium-related information is superimposed in an SS additional information superimposing section are recorded on the disc. When the signals attempt to be reproduced, the reproduction can be performed in the case wherein the medium-related information superimposed on the image signals recorded on the disc is consistent with the medium-related information of the disc on which the image signals are recorded. Thus, copying of the information signals can be limited to the copying for private use.

Hiding and Detecting Messages in Media Signals

The present invention relates to steganographically hiding messages in media signals such as video and audio signals. In one implementation, a method of decoding an encoded media signal to extract a plural-bit auxiliary signal therefrom is provided. The media signal includes a plurality of intervals, with the plural-bit auxiliary signal being steganographically encoded in at least some of the intervals. Once encoded in the media signal the plural-bit auxiliary signal is generally imperceptible to a human observer of the encoded media signal. The encoding includes subtle changes to at least some portions of the media signal to thereby represent the plural-bit auxiliary signal. The method includes receiving the encoded media signal; and decoding the received encoded media signal to extract the plural-bit auxiliary signal therefrom. The decoding analyzes a plurality of intervals of the media signal with greater or lesser confidence in the extracted multi-bit auxiliary data signal being obtained ...

ADDITIONAL INFORMATION SUPERIMPOSING METHOD AND VIDEO SIGNAL OUTPUT DEVICE

(57)【要約】 【課題】 アスペクト比の異なる画像を形成する映像信 号に変換された場合であっても、変換後の映像信号から これにスペクトラム拡散されて重畳されている付加情報 を抽出できるようにする。 【解決手段】 第２の映像信号が変換されて形成される 第１の映像信号から、これにスペクトラム拡散されて重 畳されている付加情報を抽出する場合に、逆拡散用の拡 散符号の１チップを割り当てる変換後単位ブロックの大 きさは予め定められている。この変換後の単位ブロック の大きさが予め決められた大きさとなるように、第２の 映像信号においての変換前単位ブロックの大きさを設定 し、この大きさを設定した変換前単位ブロック毎に１チ ップを割り当てる拡散符号によりスペクトラム拡散した 付加情報を第２の映像信号に重畳する。

Gerät und Verfahren zur Synthese eines Informationssignals und eines Wiedergabe-Steuersignals und Gerät zur Informationssignalaufzeichnung

METHOD AND APPARATUS FOR SUPERIMPOSING AND DETECTING AN ADDITIONAL INFORMATION SIGNAL

A spectrum spread signal by the spread code synchronized with the synchronous signal accompanied to an information signal is superimposed to the information signal and is then transmitted and the spectrum spread signal is then detected using the spread code for detection synchronized with the synchronous signal from the information signal to which the spectrum spread signal is superimposed. A value of the information signal to which the spectrum spread signal is superimposed is added or subtracted depending on the chip value of the relevant spread code for detection in each chip of the spread code for detection. The spectrum spread signal is detected by, determining whether the added/subtracted value has exceeded the predetermined threshold value or not.

METHOD OF AND APPARATUS FOR RESTRICTING COPY OF DIGITAL INFORMATION, AND APPARATUS FOR RECORDING DIGITAL INFORMATION

An apparatus for restricting a copy of digital information (20) is provided with: a detecting device (21, 22, 23, 24) for detecting a first watermark, which is buried in the digital information and comprises a first signal generated on the basis of a first rule; and a burying device (25, 26, 27) for burying a second watermark, which comprises a second signal generated on the basis of a second rule and having a structure different from that of the first signal, into the digital information if the first watermark is detected by the detecting device. A recording apparatus (100) is provided with: an inputting device (10) for inputting the digital information; the above mentioned copy restricting apparatus (20); and a recording device (50) for recording the digital information in which the second watermark is buried by said burying device.

COPY GENERATION MANAGEMENT METHOD, INFORMATION SIGNAL RECORDING APPARATUS, INFORMATION SIGNAL OUTPUTTING APPARATUS, AND INFORMATION SIGNAL REPRODUCING APPARATUS

To manage copy generations, additional information made of electronically watermarked information and other additional information are appended to an information signal. The updating of CGMS information and other additional information is managed based on the additional information made of the electronically watermarked information. Accordingly, additional information for copy generation management such as CGMS information can always be kept in a correct condition so that proper copy generation limitation control can always be performed.

Method and apparatus of detecting spectrum spread signal

In an SS additional information detecting unit, detection of a correlation between an image signal Si superimposed with a copying preventive control signal which is spectrum-spread and a PN code series is carried out at every vertical section. In the case where a correlation value between the copying preventive control signal which is superimposed on the image signal Si and is spectrum-spread and a PN code for inverse spreading does not exceed a predetermined threshold value, the correlation value calculated at every vertical section is added. The copying preventive control signal which is spectrum-spread and is superimposed on the image signal is detected by changing the threshold value of whether the correlation between the copying preventive control signal which is superimposed on the image signal Si and is spectrum-spread and the PN code for inverse spreading is established in accordance with a number of vertical sections constituting an object of detecting the correlation. Thereby, ...

Hiding and detecting messages in media signals

The present invention relates to steganographically hiding messages in media signals such as video and audio signals. In one implementation, a method of decoding an encoded media signal to extract a plural-bit auxiliary signal therefrom is provided. The media signal includes a plurality of intervals, with the plural-bit auxiliary signal being steganographically encoded in at least some of the intervals. Once encoded in the media signal the plural-bit auxiliary signal is generally imperceptible to a human observer of the encoded media signal. The encoding includes subtle changes to at least some portions of the media signal to thereby represent the plural-bit auxiliary signal. The method includes receiving the encoded media signal; and decoding the received encoded media signal to extract the plural-bit auxiliary signal therefrom. The decoding analyzes a plurality of intervals of the media signal with greater or lesser confidence in the extracted multi-bit auxiliary data signal being obtained by processing more or less intervals of the encoded media signal, respectively.

Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium

A playback device (10) generates a PN code (15) with a start timing based on a video sync signal (14), and generates a PN inverse code (16) which has a reverse polarity to that of the PN code with a timing based on the video sync signal (14). An anti-duplication control signal (13) is spectrally spread (17) using this PN code, superimposed on the video signal (18) and supplied to a recording device. A PN inverse code which is the same as the PN inverse code used in the playback device is also generated in the recording device based on the video sync signal, and reverse spectral spread is performed using this PN inverse code. ...

Audio Encoding to Convey Auxiliary Information, and Media Embodying Same

Methods of processing audio to convey auxiliary information hidden therein are provided. Various arrangements are disclosed. One alters data representing audio to include a sequence of bits of auxiliary information. The altering is based on a carrier signal and corresponding to the sequence of bits, and is based on a perceptibility threshold that varies within the data representing audio. Other arrangements are provided as well.

Audio Encoding to Convey Auxiliary Information, and Media Embodying Same

Methods of processing audio to convey auxiliary information hidden therein are provided. Various arrangements are disclosed. One alters data representing audio to include a sequence of bits of auxiliary information. The altering is based on a pseudo random carrier signal and corresponding to the sequence of bits, and is based on a local gain that varies within the data representing audio. The sequence of bits of auxiliary information include at least one fixed sequence for registration of the auxiliary information within the data representing audio and one message sequence. The altering of the data is representing audio is repeated to include redundant instances of at least some of the auxiliary information including at least the fixed sequence. Other arrangements are provided as well.

Method for abstrating superimposed information and video signal output recording and playback device

Method of adding information to video signal and information adding device

When a spectrally spread additional information signal, obtained by spectrum spreading addition information such as an anti-duplication control signal or copyright information, is superimposed on a video signal, the level of the spectrally spread additional information signal is controlled according to the scatter of pixel values in each block comprising plural pixels. The sensitivity of detecting additional information from the spectrally spread addition information signal is therefore improved, and the visual effect of the spectrally spread additional information signal on a reproduced image is suppressed.

Method of adding information to video signal and information adding device

Copy generation management

To manage copy generations, additional information made of electronically watermarked information and other additional information are appended to an information signal. The updating of CGMS information and other additional information is managed based on the additional information made of the electronically watermarked information. Accordingly, additional information for copy generation management such as CGMS information can always be kept in a correct condition so that proper copy generation limitation control can always be performed.

Informationsausgabevorrichtung, Informationsaufnahmevorrichtung, und Informationsverdopplungssteuersystem

Transaction fingerprint for video distributed over the internet

This invention relates to a technology method that creates a unique transaction fingerprint for video content distributed to Internet customers. The transaction fingerprint is also sometimes referred to as the transaction watermark. Methods disclosed for including the transaction fingerprint include:

RECORDING MEDIUM AND PRODUCTION METHOD, PLAYBACK METHOD, AND PLAYBACK DEVICE THEREOF

A list of video fingerprinting data is recorded in a nonvolatile memory (181). The video printing data is created by extracting the features of the latest video content provided on a digital video disc (160) or provided by a copyright management server authorized by a management organization (120). When a video content recorded on the digital video disc (160) are played back, the features are extracted in calculation (187) of fingerprinting data to obtain video fingerprinting data. If the data is included in the list, the playback is restricted in order to restrict unauthorized playback of the digital video disk (160) until the copyright manager permits.

Apparatus and method for synthesizing information signal and reproduction control signal and information signal recording apparatus

A synthesis signal which was reproduced from reproducing apparatus and converted into an analog signal includes an analog information signal and a copy control code. The copy control code is modulated by a spread spectrum. A code reading unit of the recording apparatus extracts the copy control code by an inverse spread spectrum. A code changing unit changes the copy control code by a spread spectrum as necessary. An output signal of the code changing unit is converted into a digital signal. The digital signal is subjected to processes necessary for recording and is recorded to a recording medium.

Apparatus and method for synthesizing information signal and reproduction control signal and information signal recording apparatus

A synthesis signal which was reproduced from reproducing apparatus and converted into an analog signal includes an analog information signal and a copy control code. The copy control code is modulated by a spread spectrum. A code reading unit of the recording apparatus extracts the copy control code by an inverse spread spectrum. A code changing unit changes the copy control code by a spread spectrum as necessary. An output signal of the code changing unit is converted into a digital signal. The digital signal is subjected to processes necessary for recording and is recorded to a recording medium.

Data processing apparatus, data processing method, and program

A copy control technique using digital watermark information, which makes it possible to prevent a content from being erroneously subjected to a copy control process according to wrong copy control information at a content-to-content transition. Copy control information in the form of digital watermark information (WM) is embedded in a content to control copying of the content in accordance with the embedded copy control information. A content-to-content transition is detected by detecting a change in a content state, such as a change in image luminance, or a change in copy control information associated with a content, or is detected on the basis of a flag, a descriptor, or channel switching. In response to detection of a content-to-content transition, a reset signal is output to a WM analyzer to reset current copy control information into a "undefined" state, so that copy control is performed in a mode such as a copy-free mode assigned to the "undefined" state.

Additional information superimposition device

Additional information is superimposed consistently while the disturbance of a picture due to excessive superimposition is suppressed. The device superimposes (14) a spectrally spread additional information on a video signal. Inverse spread processing is performed on the video signal, and an SS additional information detection means (11) detects whether additional information is superimposed already on the video signal. Based on the detection result performed by the additional information detection means (11), superimposition (14) of the spectrally spread signal supplied from the spectrally spread signal generation means on the video signal is controlled. A superimposition control method such as superimposition ON/OFF control, superimposition level control, or spread code string control is performed.

Multi-media copy management system

Information signal recording / reproducing system, information signal recording device, information signal reproducing device and information signal recording / reproducing process

When digital image signals inputted through an inputting terminal are recorded on a disc, a medium-related information (a serial number in an TOC) of the disc, read from the disc, with a medium-related information reading section is spectrum-spread in an SS additional information generating section and then digital image signals S2 on which the spectrum-spread medium-related information is superimposed in an SS additional information superimposing section are recorded on the disc. When the signals attempt to be reproduced, the reproduction can be performed in the case wherein the medium-related information superimposed on the image signals recorded on the disc is consistent with the medium-related information of the disc on which the image signals are recorded. Thus, copying of the information signals can be limited to the copying for private use.

Audio appliance and monitoring device responsive to watermark data

A consumer audio device decodes auxiliary control data that is hidden in audio information. The auxiliary control information can be used to trigger some response in the device, such as enabling or disabling certain operations.

METHOD AND SYSTEM FOR PROTECTING DIGITAL DATA FROM UNAUTHORIZED COPYING

Method and device for information anti-duplication

The invention provides an information duplication prevention method and an information duplication prevention device capable of performing correct and proper duplication prevention. Prior to transmission of the information signal such as video signal, an anti-duplication control signal for preventing duplication of the information signal is transmitted (14-16,192). The reception side for receiving the information signal can arrange the condition for performing duplication prevention control (22-24) based on the previously received anti-duplication control signal prior to reception of the information signal. ...

Image display apparatus suited to viewfinder

An apparatus for restricting a copy of digital information (20) is provided with: a detecting device (21, 22, 23, 24) for detecting a first watermark, which is buried in the digital information and comprises a first signal generated on the basis of a first rule; and a burying device (25, 26, 27) for burying a second watermark, which comprises a second signal generated on the basis of a second rule and having a structure different from that of the first signal, into the digital information if the first watermark is detected by the detecting device. A recording apparatus (100) is provided with: an inputting device (10) for inputting the digital information; the above mentioned copy restricting apparatus (20); and a recording device (50) for recording the digital information in which the second watermark is buried by said burying device.

Informationsausgabevorrichtung, Informationsaufnahmevorrichtung, und Informationsverdopplungssteuersystem

Method and apparatus for superimposing additional information signal to video signal

Multi-media copy management system

Reproduction of a data signal which is stored on a source media or distributed via a communication network is controlled by inserting master tag data and control tag data into the data signal. A player/recorder inserts an additional generation of control tag information each time a copy of the media is made. If the number of generations of the control tag information is above a threshold value, reproduction of the data signal may be inhibited. For example, if the data signal comprises audio data, the player/recorder may only allow playing of the audio signal over speakers but will not allow recording. The playing and recording of associated signals, such as a video signal which accompanies an audio signal, may also be controlled. The master tag data and control tag data may be provided as spread spectrum signals which are spectrally shaped and power-adjusted according to the data signal to render them imperceptible in the data signal. In a graceful degradation scheme, the additional generation ...

Hiding and detecting messages in media signals

The present invention relates to steganographically hiding messages in media signals such as video and audio signals. In one implementation, a method of decoding an encoded media signal to extract a plural-bit auxiliary signal therefrom is provided. The media signal includes a plurality of intervals, with the plural-bit auxiliary signal being steganographically encoded in at least some of the intervals. Once encoded in the media signal the plural-bit auxiliary signal is generally imperceptible to a human observer of the encoded media signal. The encoding includes subtle changes to at least some portions of the media signal to thereby represent the plural-bit auxiliary signal. The method includes receiving the encoded media signal; and decoding the received encoded media signal to extract the plural-bit auxiliary signal therefrom. The decoding analyzes a plurality of intervals of the media signal with greater or lesser confidence in the extracted multi-bit auxiliary data signal being obtained ...

Information signal copy managing method, information signal recording method, information signal output apparatus, and recording medium

An information signal copy managing method for properly protecting the copyright of information signals and, at the same time, guaranteeing user advantages in copying information signals within a limited range. Information indicative of the start and end of each piece of information content covered by copyright is superimposed thereon as electronic watermark information. The resultant information signal is transmitted. When the received information signal is copied, both the information indicative of the start of the information content and the information indicative of the end thereof are detected from the electronic watermark information, determining the completion of copying. Thus, copying of information content is managed.

Information signal duplication control

Information output device, information recording device, and information duplication control system

Videovervielfältigungssteuersystem

Method and apparatus for limiting digital-information duplication, and digital-information recording apparatus

Information signal recording/reproducing system and information signal recording/reproducing process

INFORMATION SIGNAL DUPLICATION CONTROL METHOD, INFORMATION SIGNAL RECORDING DEVICE, INFORMATION SIGNAL OUTPUT DEVICE, AND RECORDING MEDIUM

PURPOSE: To grasp the completion of duplication record of information contents by detecting both of information indicating the head and information indicating the end from electronic water-mark information. CONSTITUTION: When copying can be performed as a consequence of referring to CGMS information, recording is started. A start flag included in the electronic watermark information on information contents is detected, and the head of information contents is detected. After that, when the ISRC of information contents is detected, a copying history information control memory is retrieved. When the history of the past is left in a table, the number of possible copying of the information contents is checked. When the number of possible copying is one or more, recording is continued. Then the end part of information contents in which an end flag is placed is detected, and when copying is finished by a key operation of a user, one is subtracted from the number of times of permission for copying ...

DATA PROCESSING APPARATUS, DATA PROCESSING METHOD, AND PROGRAM

Copy control information using an electronic watermark prevents an erroneous control during a content transition. Copy control information is embedded as electronic watermark information WM in a content and a content transition is detected by a content state change such as image luminance change, change of other copy control information attached to the content, or a change of a flag, descriptor, or a channel switching. Upon detection of the content transition, a reset signal is output to a WM decision block so as to reset the copy control information and control is performed in an indefinite state such as copy free.

Anti-copy protection for a video signal

An apparatus and method for applying anti-copy protection to a raster-scanned video signal are described. A square waveform 52 is added to the vertical synchronisation pulses 50 of the video signal. The effect of the waveform is not apparent until it has been recorded by a video cassette recorder. The anti-copy protected video signal can therefore be viewed normally on a display device at or near to the picture quality intended by the originator of the video signal, but once recorded, exhibits a reduction in picture quality which makes the video signal quite unattractive to view.

STREAMING PIRACY DETECTION METHOD AND SYSTEM

In one embodiment, a command is received from a video provider at a media rendering device, the command being a command to embed a subscriber ID in at least one video frame in a video stream. A random key, k is also received from the video provider at the media rendering device. An injective transformation is invoked for k and the subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods. Logical blocks of the at least one video frame in the video stream are overlaid with one of the near-transparent patterns for its one of the corresponding time periods. Related apparatus, systems, and methods are also described. 1. A method comprising:receiving, at a media rendering device, a command from a video provider to embed a subscriber ID in at least one video frame in a video stream;receiving a random key, k, from the video provider;invoking an injective transformation for k and the subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods; andoverlaying logical blocks of the at least one video frame in the video stream with one of the near-transparent patterns for its one of the corresponding time periods.2. The method according to and further comprising outputting the at least one video frame in the video stream in logical blocks overlaid with the near-transparent patterns having a color component.3. The method according to wherein the subscriber ID comprises one of a smart card ID or a device ID.4. The method according to wherein the size of each of the logical blocks is equal to up to one eighth of a size of a video display screen of the media rendering device.5. The method according to wherein the time period is one second.6. The method according to wherein the near-transparent patterns are between 89%-96% transparent.7. The method according to wherein the near-transparent patterns are imperceptible to the human ...

COPY PROTECTION SYSTEM

A method of modifying the output of an output device is provided. A first code, associated with a first recipient party, is received and used to generate, within the output device, a second code, the second code containing encoded data identifying the first recipient party and instructions for activating an additional functionality of the output device. The additional functionality is activated in accordance with the instructions contained in the second code. The output of the output device is modified according to data encoded in the second code, to encode a third code in the output of the output device, the third code including an ID code associated with the first recipient party. 1. A method of modifying the output of an output device , the method comprising:retrieving a first code, associated with a first recipient party;generating within the output device, using the first code, a second code, the second code containing encoded data identifying the first recipient party and a direction to activate an additional functionality of the output device;activating the additional functionality in accordance with the direction contained in the second code; andmodifying an output of the output device according to the data encoded in the second code, to encode a third code in the output of the output device, the third code including an ID code associated with the first recipient party.2. The method according to wherein the ID code is not derivable from the first code in an obvious manner.3. The method according to wherein the first code is not derivable from the second code in an obvious manner.4. The method according to wherein the second code is obtained by decrypting or decoding the first code.5. The method according to wherein the first code comprises n bits and the second code comprises m bits claim 4 , wherein n is greater than m claim 4 , and wherein only a sub-set of n-bit first codes are valid such that they generate a valid m bit second code that activates the ...

SYSTEM AND METHOD FOR FINE-GRAINED CONTROL OF PRIVACY FROM IMAGE AND VIDEO RECORDING DEVICES

Systems and methods for providing privacy control for digital capture of a recording include identifying a person within a digital capture that is a recording of a person within an environment based on received information regarding the person. A disposition tag is associated with an identified person in the recording. The disposition tag references a privacy control action to take according to privacy constraints for the person. Coordinates in the recording where the privacy control action is to be applied are determined. 1. A method for providing privacy control for digital capture of a recording , said method comprising:identifying a person within a digital capture that comprises a recording of a person within an environment based on received information regarding the person;associating a disposition tag with an identified person in the recording, wherein said disposition tag references a privacy control action to take according to privacy constraints for the person; anddetermining coordinates in the recording where the privacy control action is to be applied.2. The method of claim 1 , further comprising sending the coordinates to a recorder that generated the digital capture.3. The method of claim 1 , wherein the information comprises data needed to predict an appearance of the person from multiple angles.4. The method of claim 3 , further comprising performing a real-time comparison between the data needed to predict the appearance of the person in the recording.5. The method of claim 4 , further comprising increasing a confidence level of the comparison through at least one action selected from a group consisting of: sampling claim 4 , smoothing the tagged area claim 4 , increasing the tagged area claim 4 , decreasing the tagged area claim 4 , analysis of digital positioning data claim 4 , and analysis of calendar data.6. The method of claim 5 , wherein the confidence level controls the privacy control action applied to the image.7. The method of claim 5 , ...

PROCESSING DIGITAL CONTENT

There are described methods and apparatus for scrambling digital content, such as video or audio content, by dividing the digital content into blocks set out in an original arrangement, and reordering the blocks from the original arrangement to a scrambled arrangement. Additional manipulation transforms such as rotations and reflections may be applied to individual blocks. A subsequent compression step may then be carried out. Methods and apparatus for carrying out corresponding descrambling of digital content are also described. 1. A method of processing digital content comprising:scrambling the digital content, the scrambling comprising dividing the digital content into blocks set out in an original arrangement and reordering the blocks from the original arrangement to a scrambled arrangement; andoutputting the scrambled digital content with the blocks ordered in the scrambled arrangement.2. The method of wherein the step of scrambling further comprises carrying out a different transform manipulation on each of a plurality of the blocks.3. The method of wherein the transform manipulations comprise movements of digital content within a block.4. The method of further comprising compressing the scrambled digital content before the step of outputting.5. The method of wherein the digital content comprises a series of frames claim 4 , the step of dividing divides each frame into groups of one or more blocks claim 4 , the groups persisting across the series of frames claim 4 , and the step of compressing is carried out using a separate compression process for each group of one or more blocks.6. The method of wherein the step of scrambling comprises dividing the digital content into blocks such that at least some of the blocks include at least one overlap area containing digital content from at least one respective adjacent block which is adjacent according to the original arrangement.7. The method of wherein the blocks including one or more overlap areas are sized to ...

Method and system for cooperatively collecting video data from driving recorders

A method for cooperatively collecting video data from driving recorders includes steps of: by a driving recorder serving as a requesting device, broadcasting a video request; by another driving recorder serving as a cooperative device, generating a video file in response to receipt of the video request, encrypting the video file to result in an encrypted file, and transmitting the encrypted file to a video file server; by the video file server, decrypting the encrypted file to result in the video file, storing the video file, and sending a success notification of video data collection to a user device based on contact information contained in pre-stored registration data.

STREAMING PIRACY DETECTION METHOD AND SYSTEM

In one embodiment, a command is received from a video provider at a media rendering device, the command being a command to embed a subscriber ID in at least one video frame in a video stream. A random key, k is also received from the video provider at the media rendering device. An injective transformation is invoked for k and the subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods. Logical blocks of the at least one video frame in the video stream are overlaid with one of the near-transparent patterns for its one of the corresponding time periods. Related apparatus, systems, and methods are also described. 1. A method comprising: [{'b': 1', '1', '2', '2, 'mapping the subscriber ID to a set of pairs: {(B, X), (B, X), . . . , (Bn, Xn)}, wherein n is the total number of logical blocks per video frame, and Xi is the number of time periods to overlay an embedded overlay on block Bi,'}, 'creating a set of sequences of the near-transparent patterns, each one of the patterns being associated with one logical block, and', 'displaying one of the near-transparent patterns of the set of sequences on each one of the logical blocks for the number of time periods; and, 'invoking, by a media rendering device, an injective transformation for a random key, k and a subscriber ID, the injective transformation generating a sequence of pairs of: near-transparent patterns and corresponding time periods wherein the injective transformation comprises;'}overlaying logical blocks of at least one video frame in a video stream with one of the near-transparent patterns for its one of the corresponding time periods.2. The method according to claim 1 , further comprising outputting the at least one video frame in the video stream in logical blocks overlaid with the near-transparent patterns having a color component.3. The method according to claim 1 , wherein the subscriber ID comprises one of the following: a ...

Media Playback Method And Device

A media playback method and device that relate to the field of computer technologies are provided. The method includes turning on a camera to detect the number of human eyes within a shooting range to determine an initial number of viewers when a user performs a media playback activity, detecting, at a set interval, the number of human eyes to determine a current number of viewers, and encrypting a playback image when the current number of viewers is greater than the initial number of viewers. The method is applicable when a user views information, such as a text, a picture, or a video, on a device such as a mobile phone terminal, a pad device, or a computer. 1. A media playback method , comprising:turning on a camera to detect the number of human eyes within a shooting range to determine an initial number of viewers when a user performs a media playback activity; anddetecting the number of human eyes at a set interval to determine a current number of viewers; andencrypting a playback interface when the current number of viewers is greater than the initial number of viewers.2. The method according to claim 1 , wherein after the turning on a camera to detect the number of human eyes within a shooting range to determine an initial number of viewers claim 1 , the method further comprises:updating the initial number of viewers when the current number of viewers is less than or equal to the initial number of viewers; andusing the current number of viewers as an updated initial number of viewers.3. The method according to claim 1 , wherein before the encrypting a playback image claim 1 , the method further comprises:determining whether to increase the number of viewers when the current number of viewers is greater than the initial number of viewers, updating the initial number of viewers when it is determined to increase the number of viewers, and using the current number of viewers as an updated initial number of viewers;determining whether to adjust a screen angle when ...

MONITORING SYSTEM, MONITORING METHOD, AND STORAGE MEDIUM

A monitoring system of an embodiment includes an acquirer, an extractor, an encryption processor, and a generator. The acquirer is configured to acquire, from one or more monitoring cameras that capture an image of a work area in which presented information to be input is input to an input terminal, a captured image captured by the one or more monitoring cameras. The extractor is configured to extract the information to be input from the captured image acquired by the acquirer. The encryption processor is configured to encrypt the information to be input extracted by the extractor. The generator is configured to generate a replaced image in which the information to be input is made invisible, the replaced image comprising a partial image that displays information encrypted by the encryption processor at a position of the information to be input in the captured image acquired by the acquirer. 1. A monitoring system comprising:an acquirer configured to acquire, from one or more monitoring cameras that capture an image of a work area in which presented information to be input is input to an input terminal, a captured image captured by the one or more monitoring cameras;an extractor configured to extract the information to be input from the captured image acquired by the acquirer;an encryption processor configured to encrypt the information to be input extracted by the extractor; anda generator configured to generate a replaced image in which the information to be input is made invisible, the replaced image comprising a partial image that displays information encrypted by the encryption processor at a position of the information to be input in the captured image acquired by the acquirer.2. The monitoring system according to claim 1 , further comprising:a data manager configured to cause a storage to store the captured image captured by the one or more monitoring cameras, and, in a case where the replaced image is generated by the generator, to cause the storage to store ...

Video Playing Method and Device

The embodiments of the present disclosure provide a video playing method and a video playing device applied to an electronic device, wherein the method includes: acquiring video data to play, and displaying the image contents of the video data in a display interface of the electronic device; detecting the image contents in the video data; and displaying an alternative image in the display interface of the electronic device to cover illegal contents when illegal contents satisfying a first illegal condition are detected in the image contents currently displayed. The embodiments of the present disclosure improve the protection effectiveness and convenience of videos. 1. A video playing method , comprising:at an electronic device with a display interface:acquiring video data to play, and displaying image contents of the video data in the display interface of the electronic device;detecting the image contents in the video data; anddisplaying an alternative image in the display interface of the electronic device to cover illegal contents, when the illegal contents satisfying a first illegal condition are detected in the image contents currently displayed.2. The method according to claim 1 , wherein the detecting the image contents in the video data comprises:detecting the image contents in the video data, when the electronic device is under a children viewing mode.3. The method according to claim 2 , wherein the electronic device is determined to be under the children viewing mode specifically according to a following manner:acquiring physiological characteristic information of a viewing user; andswitching the electronic device to the children viewing mode, when the physiological characteristic information satisfies a preset characteristic condition.4. The method according to claim 1 , wherein the displaying the alternative image in the display interface of the electronic device to cover the illegal contents when the illegal contents satisfying the first illegal ...

Information recording apparatus and tamper prevention method for information recording apparatus

An information recording apparatus, comprising: an information input unit configured to acquire audio data and/or image data; a tamper prevention unit that applies tamper prevention processing to the audio data and/or image data; and a controller that records, in a recording unit, both audio data and/or image data to which the tamper prevention processing is applied by the tamper prevention unit and audio data and/or image data to which the tamper prevention processing is not applied, if a predetermined condition is satisfied.

SYSTEM AND METHOD FOR FINE-GRAINED CONTROL OF PRIVACY FROM IMAGE AND VIDEO RECORDING DEVICES

A system and method for fine-grained privacy control of image and video recordings uses a model-based approach to solve privacy issues. The method includes steps of: receiving a digital capture of a subject bound by privacy constraints; receiving information regarding the subject, the environment, and the privacy constraints; using the information to generate a model image of the subject within the environment; associating a disposition tag with an appearance of the subject in the model image; and comparing the model image with the digital capture to determine coordinates in the recording where a privacy control action, such as a blocking action, should be applied. 1. A method for providing privacy control for digital capture of a recording , said method comprising: receiving the digital capture from a recorder, said digital capture comprising the recording of a subject within an environment, wherein said subject is bound by privacy constraints;', 'receiving information regarding the environment, the subject, and the privacy constraints;', 'generating a model image of the environment including the subject by applying the information about the subject, the environment, and the privacy constraints;', "associating a disposition tag with an appearance of the subject in the model image, wherein said disposition tag references a privacy control action to take according to the subject's privacy constraints;", 'comparing the model image with the digital capture of the recording; and', 'determining coordinates in the recording where the privacy control action is to be applied., 'using a processor device, performing2. The method of further comprising sending the coordinates to the recorder.3. The method of wherein receiving the information comprises receiving data needed to predict an appearance of the subject from multiple angles.4. The method of wherein the privacy restriction varies according to pre-determined disposition parameters.5. The method of wherein the privacy ...

DIFFERENCE ATTACK PROTECTION

In one embodiment, a method for preventing a difference attack on watermarked video content is implemented on at least one computing device and includes: manipulating values of a set of pixels to embed a forensic watermark in at least one video frame in a video content item, where the manipulating is in accordance with a given magnitude of change in the values, and introducing random noise to the at least one video frame, where the random noise is random noise of the given magnitude. 1. A method for preventing a difference attack on watermarked video content , the method implemented on at least one computing device and comprising:manipulating values of a set of pixels to embed a forensic watermark in at least one video frame in a video content item, wherein said manipulating is in accordance with a given magnitude of change in said values; andintroducing random noise of said given magnitude to said at least one video frame.2. The method according to and wherein said introducing random noise is performed on a video content rendering device.3. The method according to and wherein said manipulating values is performed on said video content rendering device.4. The method according to and further comprising:receiving said video content item on said video content receiving device, wherein said manipulating values is performed prior to said receiving.5. The method according to and wherein said video content rendering device is a set-top box.6. The method according to and further comprising:deriving said at least one video content item by performing at least one of: decoding an encoded video content item, or decrypting an encrypted video content item.7. The method according to and wherein said manipulating values is performed prior to said deriving.8. The method according to and wherein said introducing said random noise is performed after said deriving.9. The method according to and wherein:a first additive white Gaussian noise (AWGN) mask serves as a reference mark for ...

SYSTEM AND METHOD FOR OPTICAL AND LASER-BASED COUNTER INTELLIGENCE, SURVEILLANCE, AND RECONNAISSANCE

Systems and methods for preventing image capture and exploitation by optically transmitting a disruptive effect to a digital imaging system. The disruptive effect interferes with the algorithms used to compress and analyze digital images and can be used to disable the imaging equipment or inject foreign code into the imaging system or image processing computer. 1. A system for delivering a disruptive effect to imaging equipment , the system comprising:an optical transmission source capable of remotely introducing sufficient spatial or temporal complexity into an image generated by the above referenced imaging equipment, so as to interfere with the normal processes of image processing or image compression being performed on the image.2. The system of claim 1 , wherein the optical complexity is generated using the spatial intensity modulation of an optical transmission source.3. The system of claim 1 , wherein the optical complexity is generated using the temporal intensity modulation of an optical transmission source4. The system of where the image complexity introduced by the system is designed to result in the temporary or permanent impairment of the normal function of the device.5. The system of where the image complexity introduced by the system is intended to cause a memory overflow that injects new or foreign commands into the firmware of the imaging device.6. The system of where the image complexity introduced by the system is designed to interfere with image processing and compression algorithms of images downloaded from the imaging device into a computer.7. The system of where the image complexity is designed to cause the injection of foreign code into the equipment used for the image compression or processing of images generated by the imaging device8. The system of claim 1 , wherein the optical transmission source is a laser.9. The system of claim 1 , wherein the optical transmission source is a Vertical Cavity Surface Emitting Laser (VCSEL) or array of ...

Method for storing broadcasting content in open mobile alliance mobile broadcast

본 발명은 휴대 방송 서비스를 통해 수신한 방송 콘텐츠를 전송단 레벨로 녹화하여 저장하는 방법에 관한 것으로, 본 발명에 따라 방송 수신 단말은 상기 특정 방송 콘텐츠에 대한 녹화 파일의 헤더에 DRM(Digital Right Management) 프로파일과 스마트카드 프로파일 중 사용한 키 프로파일의 종류를 포함시키고, 상기 방송 콘텐츠를 암호화할 때 사용되었으며, 제2레이어 암호키에 의해 암호화된 CIEK(Content Item Encryption Key)를 포함시키고, 상기 제2레이어 암호키에 대한 획득 정보를 포함시킨다. 이때, 상기 제2레이어 암호키에 대한 획득 정보는 상기 사용한 프로파일의 종류에 따라 각각 상기 헤더의 대응 필드에 포함된다. 상기 획득 정보는 암호키 식별 정보와 암호키를 획득할 수 있는 서버의 주소 정보를 포함한다. 전송단 암호화 프로토콜을 이용하여 전송되는 방송 콘텐츠를 재암호화시켜서 녹화하는 전송단 레벨 녹화시 녹화 파일 포맷은 PDCF(Packetized DRM Content Format)이다. 따라서 본 발명에 따라 암호화된 방송 콘텐츠의 암호화와 관련된 정보는 PDCF 녹화 파일의 OMA DRM 공통 헤더 박스(OMA DRM Common Header Box)에 저장하게 된다. The present invention relates to a method of recording a broadcast content received through a mobile broadcast service at a transmission level and storing the broadcast content in a header of the broadcast content, ) Profile, a type of key profile used in the smart card profile, a content item encryption key (CIEK) used in encrypting the broadcast content and encrypted by a second layer encryption key, Includes acquisition information for the encryption key. At this time, the acquisition information for the second layer encryption key is included in the corresponding field of the header according to the type of the used profile. The acquisition information includes cryptographic key identification information and address information of a server capable of obtaining a cryptographic key. The recording file format at the transmission end level recording for re-encrypting broadcast contents transmitted using the transmission end encryption protocol is Packetized DRM Content Format (PDCF). Therefore, information related to encryption of the encrypted broadcast content according to the present invention is stored in the OMA DRM Common Header Box of the PDCF recording file. 휴대 방송 서비스, 전송단 레벨 녹화, 암호키 획득 정보 Mobile broadcast service, transmission level recording, encryption key acquisition information

Audio encoding to convey auxiliary information, and decoding of same

The present claims relate generally to steganographically encoding and decoding of audio signals. One claim recites a method of embedding auxiliary information in data representing audio. The method includes acts of: using at least a programmed electronic processor, altering data representing audio to include a sequence of bits of auxiliary information, said altering based on a carrier signal and corresponding to the sequence of bits, and said altering based on a local gain that varies within the data representing audio, the sequence of bits of auxiliary information including at least one fixed registration sequence for registration of the auxiliary information within the data representing audio and at least one message sequence, and in which the fixed registration sequence and the at least one message sequence are interleaved in at least some portions of the data, and in which the fixed registration sequence is provided in the data representing audio so as to allow determination of threshold levels associated with the auxiliary information; and repeating the altering of the data representing audio to include redundant instances of at least some of the auxiliary information including at least the fixed registration sequence. Of course, other combinations and claims are provided as well.

Image steganography system featuring perceptually adaptive and globally scalable signal embedding

An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive action can thereby be taken. In one image steganography embodiment, the relative strength of the identification code signal is both perceptually adapted in accordance with psychovisual characteristics of the image, and globally scaled in accordance with a user-set visibility control. The technique can be applied in video imagery embodiments to control associated video equipment, e.g. to serve as a copy control signal.

Information signal output control device, information signal output control method, information signal duplication prevention device, and information signal duplication prevention method

Information embedding method, information extracting method, information embedding apparatus, information extracting apparatus, and recording media

An apparatus for embedding secret information in an image signal transmitted with a shape signal showing the shape of an object is described. This apparatus comprises an embedding position decision unit for deciding a position in the object where the secret information is to be embedded, according to the shape signal; and a compositor for embedding the secret information in the position decided by the decision unit. Therefore, the secret information is protected against translation or clipping of image.

Replication generation management method and recording / reproducing system

Digital information duplication restriction method, digital information duplication restriction device, and digital information recording device

Methods for watermark decoding

An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive action can thereby be taken. The technique can be applied in video imagery embodiments to control associated video equipment, e.g. to serve as a copy control signal.

Steganographic encoding and detecting for video signals

Aspects of the invention relate generally to steganography, data hiding and/or digital watermarking for video and other media signals. One claim recites a method including: obtaining a media signal comprising a message steganographically embedded therein; obtaining information obtained from the media signal; adjusting a message detection process with reference to the information; and detecting the message from the media signal according to the adjusted message detection process. Of course, other combinations are provided as well.

Audio encoding to convey auxiliary information, and media embodying same

Methods of processing audio to convey auxiliary information hidden therein are provided. Various arrangements are disclosed. One alters data representing audio to include a sequence of bits of auxiliary information. The altering is based on a carrier signal and corresponding to the sequence of bits, and is based on a perceptibility threshold that varies within the data representing audio. Other arrangements are provided as well.

Digital Video Recorder and, apparatus and method for protectiong input image of the same

본 발명은 영상 보안 장치의 입력 영상에서 개인의 프라이버시를 침해할 우려가 있는 영역을 선택적으로 마스킹하여 개인의 중요한 정보가 보호될 수 있도록한 디지털 비디오 레코더 및 그의 입력 영상 보호 장치 및 방법에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital video recorder and an input image protection device and method thereof, in which an important image of an individual can be protected by selectively masking a region in which an image of a video security device may invade privacy of an individual. 그 구성은 적어도 하나의 감시 카메라들로부터 수신되는 영상 데이터를 처리하여 전송 또는 저장하는 디지털 비디오 레코더에 있어서, 상기 영상 데이터의 마스킹 영역의 추출 방식, 마스킹 방식을 설정하고 설정 내용에 따라 상기 영상 데이터로부터 마스킹 영역을 추출하여 선택적으로 마스킹하는 입력 영상 보호 처리부를 포함하고, 전송 또는 저장이 이루어지기 전에 설정된 영역을 마스킹하는 것을 특징으로 한다. The configuration is a digital video recorder which processes and transmits or stores image data received from at least one surveillance camera, wherein the extraction method and the masking method of the masking area of the image data are set, and the image data is set from the image data. And an input image protection processor for extracting and selectively masking a masking area, and masking a set area before transmission or storage is performed. 영상 보호, DVR, 마스킹, 영역 추출, 객체 추적, ASM Video Protection, DVR, Masking, Area Extraction, Object Tracking, ASM

System for controlling use and copying of digital contents distributed by removable recording media

System and method for controlling the use and duplication of digital content distributed on removable media

描述了用于控制在可移动媒体上分发的数字内容的使用和复制的系统和方法。根据本发明的实施例，通过允许制作数字内容的特定数量的受保护(例如加密)副本来保护数字内容(202，203)。这些副本通常只可用于经授权的装置并在它们之间移动(204，205，206)。在一个实施例中，若需副本，则在包含内容的存储媒体(例如CD)插入计算机时，制作受保护数字内容的最大数量的可允许副本并存储在计算机的硬盘驱动器中(201，202，203)。然后，各副本可移动而不是复制到其它装置(例如便携式固态装置)(204，205，206)。在备选实施例中，包含数字内容的存储媒体是可写的(例如CD－R)。当存储媒体插入计算机时，计算机把信息写入存储媒体，该信息管理以后对存储媒体上数字内容的复制和播放(404)。

Method for providing information to image signal and information provision device

(57)【要約】 【課題】 画質への影響をできるだけ押さえつつ、付加 情報としてのスペクトラム拡散信号の検出感度を上げら れる重畳方法、装置を提供する。 【解決手段】 画像信号の１画面分を、複数画素からな るブロック単位に分割する。このブロック単位に、スペ クトラム拡散信号からなる付加情報の１チップを割り当 てて、画像信号に付加情報を重畳する。ブロック単位毎 に、当該ブロック内での画像信号のばらつき度を求め る。求めたばらつき度に応じて、重畳する付加情報の重 畳レベルを制御する。

Detection method and device for spread spectrum signal

(57)【要約】 【課題】 情報信号に重畳されたスペクトラム拡散信号 を、簡単な構成で、迅速に検出する。 【解決手段】 情報信号に付随する同期信号に同期した 拡散符号によるスペクトラム拡散信号が前記情報信号に 重畳されて伝送され、このスペクトラム拡散信号が重畳 された情報信号から、同期信号に同期した検出用拡散符 号を用いてスペクトラム拡散信号を検出する方法であ る。検出用拡散符号の１チップ毎に、当該検出用拡散符 号のチップ値に応じてスペクトラム拡散信号が重畳され た情報信号の値の加減算を行う。その加減算値が所定の スレッショールド値を越えたか否かにより、スペクトラ ム拡散信号を検出する。

Method of storing broadcast contents in mobile broadcast service terminal

Disclosed is a method of recording and storing a broadcast content received for mobile broadcast services in a transmitting-end level. A broadcast receiving terminal includes a type of the key profile in the header of the recorded file for the particular broadcast content, the CIEK which is used in encrypting the broadcast content and encrypted with the second layer encryption key, and the acquisition information on the second layer encryption keyThe acquisition information on the second layer encryption key is included in a corresponding field of the header according to the type of the used profile. As in the SRTP and IPSec, a recorded file format in the transmitting-end level recording is the PDCF. Information associated with the encryption of the encrypted broadcast content is stored in the OMA DRM common header box (ohdr box) of the PDCF recorded file.

Coding apparatus and method, decoding apparatus and method, image processing system and method

一种图像处理系统，包括：编码设备，被配置为编码输入图像数据；以及解码设备，被配置为解码经编码的输入图像数据，其中，如果对该输入图像数据重复编码和解码，则与该输入图像数据相对应的图像的图像质量恶化了。该解码设备包括：输入部分，输入其中量化了输入图像数据的量化数据；以及解码部分，解量化由输入部分输入的量化数据，以及将作为量化的结果而获得的解量化值转换为在当执行量化时与该解量化的值相对应的范围之内的、与量化阈值的边界邻近的值。

Method and apparatus for superimposing additional information signal to video signal

在把扩频的附加信息信号叠加至视频信号的时候，通过利用每小块部分中预定的模式连续地变化扩频的附加信息信号的电平，在再生的图像上可以控制该扩频的附加信息信号对再生图像的可视影响，其中诸如复制防止控制信息和版权信息的附加信息被扩频。

Video signal transmission method, superimposed information extraction method, video signal output device, video signal receiving device, and video recording medium

A superimposing position setting unit uses a video synchronizing signal from a synchronization separating unit as a reference signal, and generates a superimposing position indicating signal S 4 for indicating an effective image plane interval of a video signal as a superimposing interval during which an SS duplication control signal is superimposed. An SS duplication control signal generator generates a PN code sequence repeating every one vertical interval, and spreads the spectrum of a duplication control signal S 3 by using the PN code sequence to form an SS duplication control signal. The SS duplication control signal is outputted to the effective image plane interval on the basis of the superimposing position indicating signal S 4 , and is superimposed on the video signal during the effective image plane interval of the video signal by an adder. Thus, the method according to the invention is able to prevent removal and deterioration of added information spread in spectrum and superimposed on the video signal and to securely provide the added information superimposed on the video signal.

Recording medium, reproducing device, recording device, reproducing method and recording method

FIELD: information technology. SUBSTANCE: recording medium has main and additional video streams and input unit maps for each of said streams. In the main video stream, part of the TS packets is converted and TS packets making up each N-th input unit are not converted. Each TS packet of the additional video stream, which is closest in time to the time mark of displaying any N-th input unit of the main video stream, is not converted. EFFECT: reduced load on reproducing equipment with fast forward and reverse playback. 12 cl, 38 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 473 980 (13) C2 (51) МПК G11B 20/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010122070/28, 29.10.2008 (24) Дата начала отсчета срока действия патента: 29.10.2008 (73) Патентообладатель(и): ПАНАСОНИК КОРПОРЭЙШН (JP) (43) Дата публикации заявки: 10.12.2011 Бюл. № 34 2 4 7 3 9 8 0 (45) Опубликовано: 27.01.2013 Бюл. № 3 (56) Список документов, цитированных в отчете о поиске: US 2007047645 A1, 01.03.2007. WO 2006028216 A1, 16.03.2006. US 2002064189 A1, 30.05.2002. RU 2287907 C2, 20.11.2006. 2 4 7 3 9 8 0 R U (86) Заявка PCT: JP 2008/003088 (29.10.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 01.06.2010 (87) Публикация заявки РСТ: WO 2009/057298 (07.05.2009) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", Ю.Д.Кузнецову, рег.№ 595 (54) НОСИТЕЛЬ ЗАПИСИ, УСТРОЙСТВО ВОСПРОИЗВЕДЕНИЯ, УСТРОЙСТВО ЗАПИСИ, СПОСОБ ВОСПРОИЗВЕДЕНИЯ И СПОСОБ ЗАПИСИ (57) Реферат: Предложен носитель записи, способы и устройства для записи и воспроизведения носителя. Носитель содержит основной и дополнительный видеопотоки и карты блоков входа для каждого из них. В основном видеопотоке часть пакетов TS-пакеты преобразована, а TS-пакеты, составляющие каждый N-й блок входа, являются непреобразованными. Каждый TS-пакет дополнительного видеопотока, являющийся ближайшим во ...

Data generation device, data generation method and program product

Management device and image processing system

A resolution converter converts input image data to N types (N is a plural number) of image data having resolutions different with each other. A secret sharing unit performs secret sharing schemes so that the plurality of pieces of image data are respectively divided into n pieces (n is an integer equal to or more than N+1 and the same value in all of image data) of distributed data and the distributed data is reconstructed to original image data using k pieces (k is an integer equal to or more than 2 and equal to or less than n and different value for each piece of image data) among n pieces. A data combination unit generates n pieces of combination data by combining distributed data selected one by one so as not to overlap with each of resolutions and stores each piece of the combination data in different storages. As more pieces of distributed data are gathered, image data with higher resolutions can be reproduced and security for copyright, privacy, or the like can be secured in each piece of distributed data.

Method and system for encoding image and audio content

Image or audio content data is encoded to steganographically convey plural bit auxiliary data. The content data is thereafter subjected to lossy compression/decompression, and the auxiliary data can still be recovered and used, e.g., to control associated audio or video equipment.

Copy protection for digital motion picture image data

An apparatus and method for displaying a copy-deterrent pattern (104) within a digital motion picture in order to discourage recording of the motion picture using a video camera or other sampling recording device. A copy-deterrent pattern (104) could be, for example, one or more symbols, a random pattern, a digital watermark or a text message (106). The copy-deterrent pattern (104) comprises a plurality of pixels within each frame of the digital motion picture, and the displayed pixel intensities are modulated at a temporal frequency using modulation characteristics deliberately selected to be imperceptible to human observers while simultaneously producing objectionable aliasing in any copy made using a video camera.

Image processing method applied to a display and associated circuit

A circuit applied to a playback device includes an image format determining circuit, a control circuit, an image processing module and a blending circuit. The image format determining circuit receives an image signal and determines whether the format of the image signal is a standard dynamic range (SDR) or a high dynamic range (HDR) to generate a determination result. The control circuit generates a control signal according to the determination result. The image processing module selects an image processing setting corresponding to one of the SDR format and the HDR format, and processes the image signal according to the image processing setting to generate a processed image signal. The blending circuit superimposes an interface image onto the processed image signal to generate an output image signal to a display.

Copyright protection information protection method, information signal reproduction method, information signal processing device, information signal reproduction device, and information signal recording device

Audio appliance and monitoring device responsive to watermark data

A consumer audio device decodes auxiliary control data that is hidden in audio information. The auxiliary control information can be used to trigger some response in the device, such as enabling or disabling certain operations.

Method of storing broadcast contents in mobile broadcast service terminal

Disclosed is a method of recording and storing a broadcast content received for mobile broadcast services in a transmitting-end level. A broadcast receiving terminal includes a type of the key profile in the header of the recorded file for the particular broadcast content, the CIEK which is used in encrypting the broadcast content and encrypted with the second layer encryption key, and the acquisition information on the second layer encryption key. The acquisition information on the second layer encryption key is included in a corresponding field of the header according to the type of the used profile. As in the SRTP and IPSec, a recorded file format in the transmitting-end level recording is the PDCF. Information associated with the encryption of the encrypted broadcast content is stored in the OMA DRM common header box (ohdr box) of the PDCF recorded file.

Video transmission method, video duplicate prevention method and device, and video recording medium

(57)【要約】 【課題】 映像信号を劣化させることなく複製の防止制 御を行うための情報を重畳し、この情報を確実かつ迅速 に取り出して複製の防止制御を行う映像伝送方法、映像 複製防止方法、映像複製防止装置、および映像記録媒体 を提供する。 【解決手段】 出力装置１０は、映像同期信号を基準と して形成されるＰＮ符号開始タイミング信号Ｔ１に応じ てＰＮ符号の発生を開始させる。ＰＮ符号は、ＰＮ符号 反転タイミング信号ＨＴに応じて、その１チップ区間が 複数個に分割され、１分割区間おきに、元のチップの値 が反転されて、ＰＮ反転符号が形成される。これを用い て複製防止制御信号をスペクトラム拡散し映像信号に重 畳する。出力装置１０から映像信号の供給を受ける記録 装置においては、出力装置１０と同様にして形成される ＰＮ反転符号に基づいて逆スペクトラム拡散を行う。

Rendering content using obscuration techniques

Exemplary embodiments relate to rendering content using obscuration techniques. An exemplary method comprises receiving source content, identifying a mask that segments the source content, identifying masking techniques, associating the source content with obscuration information and usage rules, and transmitting the source content, the usage rules, and the obscuration information to a recipient computing device. Another exemplary method comprises receiving source content, constructing a mask that segments the source content, identifying a masking technique, generating first and second transformed images by applying the masking technique, and displaying the first and second transformed images as frames in a repeating series of frames to approximate the source content. Yet another exemplary method relates to providing frames for rendering on a display, the frames including pixel data, the pixel data comprising input values for one or more color components.

Method, system, electronic device and medium for processing private content in video

本发明实施例提供了一种视频中隐私内容的处理方法、系统、电子设备及介质，上述方法包括：获取待处理的原始视频图像，并确定原始视频图像中的隐私区域；使用预设填充数据对隐私区域进行填充，得到被填充后的第一视频图像；对第一视频图像进行编码，得到第二视频图像；对原始视频图像进行编码，得到第三视频图像，并对第三视频图像进行加密处理，得到加密视频图像；将加密视频图像作为私有数据以及将第二视频图像作为负载数据，并将包含私有数据和负载数据的图像数据发送至终端设备，其中，私有数据为具有隐私区域访问权限的终端设备所能访问数据。采用该方法实现了在保证隐私内容的安全性的前提下恢复得到准确的隐私内容。

Information signal output control method, information signal copy prevention method, information signal copy prevention device, information signal recording medium

본 발명에 의하면, 만약 디스크로부터 재생된 영상신호에 가산된 서로 관련하여 발생되는 한쌍의 SS복제방지제어신호(S5)와 복사보호신호(S6) 중 어느 하나만이 검출되거나, 특정 복제방지제어신호가 검출되지 않으면, 디스크에 기록된 영상신호는 불법 복제영상신호임으로 판단되고, 출력제어신호발생부는 재생 영상신호(S4)를 출력하지 못하도록 출력제어부를 제어한다. According to the present invention, if only one of a pair of SS copy protection signal S5 and copy protection signal S6 generated in association with each other added to a video signal reproduced from a disc is detected, or a specific copy protection signal is generated. If not detected, it is determined that the video signal recorded on the disc is an illegally copied video signal, and the output control signal generator controls the output control unit so as not to output the reproduced video signal S4.

Copy protection for digital motion picture image data

An apparatus and method for displaying a copy-deterrent pattern (104) within a digital motion picture in order to discourage recording of the motion picture using a video camera or other sampling recording device. A copy-deterrent pattern (104) could be, for example, one or more symbols, a random pattern, a digital watermark or a text message (106). The copy-deterrent pattern (104) comprises a plurality of pixels within each frame of the digital motion picture, and the displayed pixel intensities are modulated at a temporal frequency using modulation characteristics deliberately selected to be imperceptible to human observers while simultaneously producing objectionable aliasing in any copy made using a video camera.

Recording medium and manufacturing method thereof, reproducing method and reproducing device

DIGITAL REMOVAL OF VIDEO COPY PROTECTION PULSES

Scrambling and descrambling a high definition TV signal

Method and apparatus for scrambling a high definition television signal to discourage unauthorized recording of same. While recording per se is not prevented, the resulting recorded signal is rendered unusable due to an induced “wobble” between the active video and the associated sync pulses. The scrambled television signal is readily viewable on a compliant high definition television set which descrambles the HDTV signal using an encoded indication of the amount of wobble accompanying the HDTV signal. Also provided is a special interface to prevent unauthorized persons from using the indication of the amount of wobble so as to defeat the scrambling. Also provided are method and apparatus for defeating the scrambling method and hence allowing recording of the scrambled video signal.

Method of storing broadcast contents in mobile broadcast service terminal

Disclosed is a method of recording and storing a broadcast content received for mobile broadcast services in a transmitting-end level. A broadcast receiving terminal includes a type of the key profile in the header of the recorded file for the particular broadcast content, the CIEK which is used in encrypting the broadcast content and encrypted with the second layer encryption key, and the acquisition information on the second layer encryption keyThe acquisition information on the second layer encryption key is included in a corresponding field of the header according to the type of the used profile. As in the SRTP and IPSec, a recorded file format in the transmitting-end level recording is the PDCF. Information associated with the encryption of the encrypted broadcast content is stored in the OMA DRM common header box (ohdr box) of the PDCF recorded file.

Method and apparatus for superimposing a level changed spectrum spread additional information signal on a video signal

Visual influence on the reproduced image by the spectrum spread additional information signal can be controlled on the reproduced image by sequentially changing the level of the spectrum spread additional information signal with the predetermined pattern in each chip section on the occasion of superimposing, on the video signal, the spectrum spread additional information signal in which the additional information such as duplication preventing control information and copy right information, etc. is spectrum spread.

Method and apparatus for limiting digital-information duplication, and digital-information recording apparatus

一种数字信息拷贝限制设备(20)设有：检测装置(21，22，23，24)，用来检测埋入数字信息中并包括根据第一规则产生的第一信号的第一水印；以及埋入装置(25，26，27)，若检测装置检测到第一水印，则用来把包括根据第二规则产生并在结构上不同于第一信号的第二信号的第二水印埋入数字信息中。一种数字信息记录设备(100)设有：输入装置(10)，用来输入数字信息；上述拷贝限制设备(20)；以及记录装置(50)，用来记录由埋入装置埋入了第二水印的数字信息。

Image processing method for increasing the blurring of pirated images

The image is broken down into a breakdown color space. For each broken down source pixel, if a source point P S0j is used to represent the end of the color source vector OP S0j associated with said source pixel, component points P 1j , P 2j , . . . , P kj , . . . , P nj are used to represent the ends of the color component vectors OP 1j , OP 2j , . . . , OP kj , . . . , OP nj associated with the component pixels, if a limit sphere of radius L S0j is defined, centered on the point P S0j , then said breakdown is such that the following applies: P S0 P j1 , P S0 P j2 , P S0 P jk , . . . , P S0 P jn ≧K S0j ×L S0j , with K S0j ≧0.5. The effectiveness of the scrambling is then significantly enhanced.

Information recording apparatus and tamper prevention method for information recording apparatus

An information recording apparatus, comprising: an information input unit configured to acquire audio data and/or image data; a tamper prevention unit that applies tamper prevention processing to the audio data and/or image data; and a controller that records, in a recording unit, both audio data and/or image data to which the tamper prevention processing is applied by the tamper prevention unit and audio data and/or image data to which the tamper prevention processing is not applied, if a predetermined condition is satisfied.

Processing digital content

There are described methods and apparatus for scrambling digital content, such as video or audio content, by dividing the digital content into blocks set out in an original arrangement, and reordering the blocks from the original arrangement to a scrambled arrangement. Additional manipulation transforms such as rotations and reflections may be applied to individual blocks. A subsequent compression step may then be carried out. Methods and apparatus for carrying out corresponding descrambling of digital content are also described.

Image reproduction control

Apparatus and method for synthesizing information signal and reproduction control signal and information signal recording apparatus

从再生装置再生的并转换成一个模拟信号的一个合成信号包括一个模拟信息信号和一个复制控制码。该复制控制码由一个扩展频谱所调制。记录装置的一个码读出单元通过反向扩展频谱提取复制控制码。一个码改变单元按照需要利用扩展频谱改变复制控制码。码改变单元的输出信号被转换成一个数字信号。数字信号经历必要的处理，以便记录到一个记录介质。

Information addition method and information addition apparatus for image signal

Video transmission method, video processing method, video transmission device, and video processing device

Method and apparatus for providing content control via detection of modifications to a signal

A method and apparatus is provided for generating or providing any of various types of modifications purposely made to generally known signals, waveforms, conditions, functions, etc. The modifications are sensed, read, detected or interpreted to provide a content control command indicative of the difference between the original signal, waveform, condition, functions, etc., and the modified signal, waveform, condition, function, etc. The content control command may be used to provide content control for a content control system, which in turn may provide control of a selected compliant device.

Information output apparatus, information output method, recording apparatus, and information duplication prevention control method

Video signal anti-duplication control system

一种重放装置产生用与视频同步信号同步的预定周期视频重复产生的PN码序列。防复制控制信号使用这个产生的PN码序列进行扩频，重叠在视频信号上并输出。具有与用于重放装置中的PN码序列相同定时和码型的PN码序列根据在接收输出视频信号的接收侧的视频同步信号同样被产生。使用这个PN码序列，执行反扩频，重叠在视频信号上的防复制控制信号被提取，并根据提取的防复制控制信号执行防复制控制。

Methods for decoding watermark data from audio, and controlling audio devices in accordance therewith

Methods for decoding auxiliary control information from audio, and using same to control an audio appliance. Various arrangements are disclosed. One method correlates a filtered version of the audio with predetermined noise data to discern plural bits of hidden data. The data thereby extracted is used to trigger some response in the appliance, such as enabling or disabling certain operations.

Method and system for tracing an analog copy of a digital work to a unique digital copy and a particular digital player

A method for protecting a DVD video includes deriving a distinct version of the video data from sequential distinct data objects contained in a content database. Each data object has at least one member and selected data objects have at least two members that produce discernibly different analog output signals. In the exemplary embodiment, the members of a data object correspond to alternate “camera angles” in the DVD context. By selecting among alternate data objects available in the content database, the identity of an agent who is to be responsible for that copy is encoded in the particular copy. A modified player encodes the identity of the player into the reproduced analog video signal by making choices from among the members of the selected multi-member data objects.

Information signal output control method, information signal copy prevention method, information signal copy prevention device and information signal recording medium

(57)【要約】 【課題】 情報信号の違法な複製、および、違法に複製 された情報信号の利用を防止することができる方法、装 置および記録媒体を提供する。 【解決手段】 ディスク１００から再生される映像信号 に、対になるように、発生が関連付けられて付加される ＳＳ複製防止制御信号Ｓ５、コピーガード信号Ｓのう ち、いずれか一方しか検出されないとき、あるいは、特 定の複製防止制御信号が検出されないときには、ディス ク１００に記録されている映像信号は、違法に複製され たものであると判別し、出力制御信号生成部１７は、出 力制御部１４を制御して、再生映像信号Ｓ４を出力しな いようにする。

Information-processing apparatus, information-processing method, program, and storage medium

An information-processing apparatus comprises an acquisition unit configured to acquire information about a communication-method type from a display device connected to the information-processing apparatus, a determination unit configured to determine whether or not the display device is adapted to receive data on digital contents by using a predetermined copyright-protection technology based on the communication-method-type information, a conversion unit configured to convert an image quality of the digital contents based on the determination result, and an output unit configured to transmit the converted digital contents to the display device.

Information transmission method, information duplication prohibiting method, information duplication prohibition device and information crevording medium

The level of the spectrally spread anti-duplication control signal to be superimposed on an information signal such as a video signal is changed by using a random number RD generated by a random number generation unit 163 . Since it is difficult to follow after the change of the level of the spectrally spread anti-duplication control signal, elimination of the anti-duplication control signal from the information signal is made further difficult. This can reliably provide the anti-duplication control signal to the receiving side.

Cinema anti-piracy measures

An anti-piracy system introduces distortion (204) into a recorded image, while maintaining a high quality projected image. The video source material includes modulated entities for providing artifacts incompatible with the content of the video source material and selectively deliverable information that the projection system uses to demodulate the entities. A projector receives the information about the modulated entity and corrects, or demodulates, the entity (210). The projection system (208) also imposes a recording device dependent interference on the projected images.

Method and apparatus for removing or defeating effects of copy protection signals from a video signal

In a known copy protection process for preventing recording of video signals, pseudo sync and AGC pulses (Fig. 2) are present on predetermined lines within the blanking intervals of the video signal so that any subsequent video tape recording of the video signal shows a picture of very low entertainment quality. This copy protection process is defeated first by determining the location of the video lines containing the copy protection using the color burst signal or chroma in the horizontal blanking interval to determine online detection (Fig. 4). Then some or all of the lines including copy protection signals are modified so as to render the overall video signal recordable. The modification is accomplished in a number of ways, including gain shifting portions of the video signal, level shifting portions of the video signal, bandwidth limiting certain portions of the video signal or replacing certain portions of the video signal with other video elements (Fig. 5).

Method and apparatus of detecting spectrum spread signal

In an SS additional information detecting unit, detection of a correlation between an image signal Si superimposed with a copying preventive control signal which is spectrum-spread and a PN code series is carried out at every vertical section. In the case where a correlation value between the copying preventive control signal which is superimposed on the image signal Si and is spectrum-spread and a PN code for inverse spreading does not exceed a predetermined threshold value, the correlation value calculated at every vertical section is added. The copying preventive control signal which is spectrum-spread and is superimposed on the image signal is detected by changing the threshold value of whether the correlation between the copying preventive control signal which is superimposed on the image signal Si and is spectrum-spread and the PN code for inverse spreading is established in accordance with a number of vertical sections constituting an object of detecting the correlation. Thereby, the spectrum spread signal can be detected even in the case where the spectrum spread signal is deteriorated.

Projection system for displaying at least one image based on three filtered primary colours

The invention relates to a projection system for displaying at least one visual image based on three primary colors, comprising a signal processing unit for converting said visual image into at least a visual image based on four primary colors, a frequency band being associated to each color primary, first display means for displaying three first primary colors of said visual image on a screen and second display means for displaying at least the fourth primary color of said visual image on said screen. According to the invention, the system further comprises optical filtering means that are adapted to enhance the separation between the frequency spectrum of the first three primary colors of the first display means and the frequency spectrum of the at least fourth primary color of the second display means. Application to anti-camcorder systems.

Data-generating device, data-generating method, data-generating program, and recording medium

The disclosed data-generating generates data that can prevent the contents displayed on a screen from being accurately replicated. The data-generating device is provided with: an acquisition means that acquires a still image dataset; a still image dataset generation means that generates a predetermined number of still image datasets, which are the acquired still image dataset of which at least one subset of pixels have been masked, and that causes the positions of at least a subset of the masked pixels to differ from each other between at least two still image datasets among said predetermined number of still image datasets; and a moving picture dataset generation means that generates a moving picture dataset wherein the generated still image datasets are displayed at a predetermined frame rate.

Method and apparatus for superimposing additional information signal to video signal

在把扩频的附加信息信号叠加至视频信号的时候,通过利用每小块部分中预定的模式连续地变化扩频的附加信息信号的电平,在再生的图像上可以控制该扩频的附加信息信号对再生图像的可视影响,其中诸如复制防止控制信息和版权信息的附加信息被扩频。

System and method for detecting

Image processing method applied to a display and associated circuit

一種應用於一播放裝置的電路包含一影像格式判斷電路、一控制電路、一影像處理模組以及一混合電路，其中該影像格式判斷電路用以接收一影像訊號，並判斷該影像訊號的格式為標準動態範圍或是高動態範圍以產生一判斷結果；該控制電路根據該判斷結果以產生一控制訊號；該影像處理模組根據該控制訊號來選擇對應於標準動態範圍格式與高動態範圍格式其中之一的一影像處理設定，並使用該影像處理設定來對該影像訊號進行處理以產生一處理後影像訊號；及該混合電路將一介面影像疊加於該處理後影像訊號以產生一輸出影像訊號，以供輸出至一顯示器。

Digitally removing video copy protection pulses

The invention uses digital techniques for defeating the effects of the analog copy protected signal while the signal is in the digital domain. The types of copy protection signals includes pseudo sync pulses and AGC pulses. Additionally digital techniques may be used for reducing or eliminating the effects of a chroma copy protection process (Figs. 10-14). A digital video copy protection eliminator allows removal of substantially all pseudo sync pulses and/or AGC pulses in the digital domain. The location of pseudo syncs and/or AGC pulses are determined, while the signal is in the digital domain. These known pixel locations of all or some of the pseudo syncs and/or AGC pulses are used to digitally modify the signal so as to effectively remove the pseudo sync pulses and/or AGC pulses.

Method and apparatus for removing or defeating effects of copy protection signals from a video signal

In a known copy protection process for preventing recording of video signals, pseudo sync and AGC pulses (Fig. 2) are present on predetermined lines within the blanking intervals of the video signal so that any subsequent video tape recording of the video signal shows a picture of very low entertainment quality. This copy protection process is defeated first by determining the location of the video lines containing the copy protection using the color burst signal or chroma in the horizontal blanking interval to determine online detection (Fig. 4). Then some or all of the lines including copy protection signals are modified so as to render the overall video signal recordable. The modification is accomplished in a number of ways, including gain shifting portions of the video signal, level shifting portions of the video signal, bandwidth limiting certain portions of the video signal or replacing certain portions of the video signal with other video elements (Fig. 5).

blockchain-based method of providing secure processing of camera video

The present invention generally relates to a technology for security processing a camera shot image based on a blockchain. More particularly, the present invention relates to a security processing technology for utilizing a blockchain technique to prevent unauthorized exposure of a camera shot image by hacking or to prevent forgery of the shot image data in a system configured to access an image shot by a camera through a network. According to the present invention, it is possible to prevent unauthorized exposure or forgery of a camera shot image by hacking. According to the present invention, it is possible to prevent the camera shot image stored in an image storage from being hacked, and by making the update period (e.g., 3 minutes) of the blockchain sufficiently short, security processing can be also achieved for a real-time camera image. The present invention can be applied to an IP camera (webcam) installed in a house to enhance security, and it is possible to effectively prevent a personal image generated in the house from being leaked or forged.

Applied to the image treatment method of playing device and the circuit of correlation

本发明涉及一种应用于一播放装置的影像处理方法及相关的电路，包含一影像格式判断电路、一控制电路、一影像处理模块以及一混合电路，其中该影像格式判断电路用以接收一影像信号，并判断该影像信号的格式为标准动态范围或是高动态范围以产生一判断结果；该控制电路根据该判断结果以产生一控制信号；该影像处理模块根据该控制信号来选择对应于标准动态范围格式与高动态范围格式其中之一的一影像处理设定，并使用该影像处理设定来对该影像信号进行处理以产生一处理后影像信号；及该混合电路将一介面影像迭加于该处理后影像信号以产生一输出影像信号，以供输出至一显示器。

Method and system for processing privacy content in video, and electronic device and medium

Provided in the embodiments of the present application are a method and system for processing privacy content in a video, and an electronic device and a medium. The method comprises: acquiring an original video image to be processed, and determining a privacy area in the original video image; filling the privacy area with preset filling data, so as to obtain a filled first video image; encoding the first video image to obtain a second video image; encoding the original video image to obtain a third video image, and encrypting the third video image to obtain an encrypted video image; and taking the encrypted video image as private data, taking the second video image as load data, and sending, to a terminal device, image data including the private data and the load data, wherein the private data is data that a terminal device with a privacy area access permission can access. By using the method, accurate privacy content is recovered on the premise of ensuring the security of the privacy content.

Scrambling and descrambling a high definition TV signal

Method and apparatus for scrambling a high definition television signal to discourage unauthorized recording of same. While recording per se is not prevented, the resulting recorded signal is rendered unusable due to an induced “wobble” between the active video and the associated sync pulses. The scrambled television signal is readily viewable on a compliant high definition television set which descrambles the HDTV signal using an encoded indication of the amount of wobble accompanying the HDTV signal. Also provided is a special interface to prevent unauthorized persons from using the indication of the amount of wobble so as to defeat the scrambling. Also provided are method and apparatus for defeating the scrambling method and hence allowing recording of the scrambled video signal.

Information processing system, information processing method, terminal device, and information processing device

A terminal device (30) comprising: a solid-state imaging element (3003) including an image sensor (3100) that converts received light into an image, an image processing unit (3104) that detects a specific object in an image, and an output interface (3103) that outputs images; and a first communications unit (303) that transmits images output from the output interface. An information processing device (10) comprising a second communications unit (100) and a processor (1000). The second communications unit receives images sent from the terminal device, and, if an image received by the second communications unit is an image having a specific object detected by the image processing unit, the processor performs mask processing that masks the specific object.