КВАНТОВАНИЕ ЦВЕТНОСТИ В КОДИРОВАНИИ ВИДЕОСИГНАЛОВ

Изобретение относится к кодированию/декодированию видеосигналов. Технический результат - расширение арсенала технических средств квантования цветности для сигнализации дополнительных значений сдвига параметра квантования (QP) цветности. Предложен способ сигнализации дополнительных значений сдвига QP цветности, которые являются конкретными для групп квантования, причем каждая группа квантования явно задает свой собственный набор значений сдвига QP цветности. Альтернативно, задают таблицу возможных наборов значений сдвига QP цветности в области заголовка изображения, и каждая группа квантования использует индекс для выбора записи из таблицы, для определения своего собственного набора значений сдвига QP цветности. Конкретные значения сдвига QP цветности группы квантования затем используют для определения значений QP цветности для блоков в пределах группы квантования, дополнительно к значениям сдвига QP цветности, уже заданным для более высоких уровней иерархии кодирования видеосигналов. 17 ...

КВАНТОВАНИЕ ЦВЕТНОСТИ В КОДИРОВАНИИ ВИДЕОСИГНАЛОВ

FARBFERNSEH-UEBERTRAGUNGS- BZW. INFORMATIONSSPEICHERSYSTEM MIT ZEITMULTIPLEXCODIERUNG UND DAZU GEEIGNETER INFORMATIONSGEBER UND -EMPFAENGER

Video colour component isolation circuitry

A circuit and method for electrically isolating an analog colour component signal of a video signal are described. A first path 144 receives the colour component signal and includes an optical isolator 158 which passes the colour signal over a first frequency range extending from DC. A second path 146 also receives the colour component signal and includes a transformer 183 which passes the colour signal over a second frequency range extending from above DC. A summing device 190 sums the outputs of the first and second paths to produce an output colour component signal. The first path and second path are configured to provide a substantially constant amplitude for the output signal over the first and second frequency ranges and a substantially constant phase relationship between the colour component signals in the first and second paths at the overlap between the first and second frequency ranges.

Method for generating a time division multiplex colour video signal

CODED COLOUR PICTURE TRANSMISSION

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

MONOCHROME-COMPATIBLE COLOR SLOW SCAN TELEVISION SYSTEM

SYSTEM FOR ADAPTIVELY GENERATING SIGNAL IN ALTERNATE FORMATS AS FOR AN EDTV SYSTEM

RCA 85,111 A video signal generating system develops an encoded video signal representing less than all of the video information. Auxiliary signal generating circuitry develops a pair of auxiliary signals representing in part the remaining video information. A first of the pair of auxiliary signals includes relatively high fidelity signal but with limited bandwidth. The second auxiliary signal includes relatively low fidelity information but has an effective higher bandwidth. Depending upon the informative density of the auxiliary information, the first and second auxiliary signals are selected to produce an auxiliary output signal which is combined with the encoded video signal for transmission. A receiver responsive to the transmitted signal separates the video and auxiliary signals. The video and auxiliary signals are decoded and used to generate enhanced display images.

METHOD FOR THE TRANSMISSION OF INFORMATION, IN WHICH THE SIGNALS ARE CODED BY WAY OF THE MAGNITUDE OF THE AMPLITUDES OF THE HALF-WAVES OR PERIODS OF A SINUS- WAVE ALTERNATING CURRENT

Empfänger für ein Farbfernsehsystem

Installation de télévision utilisant un câble destiné à alimenter plusieurs récepteurs

Method of reproduction of multi-coloured images

So that the simplest possible devices for recording, transmitting and/or storage of a colour television picture can be used, a video signal sequence (EGX), which corresponds to a colour double sequence interlaced line scan, is used. For this purpose two signals (EG, EX), which are assigned alternately line-by-line to different chromatic components, are used. One of the signals (EX) in turn contains signal components (ER, EB), which are assigned by line section to two different chromatic components. The video signal sequence (EGX) is repeated line-by-line, by field or by frame before the image is reproduced, and thus from one and the same signal sequence good image reproduction is generated with a very simple device, very good image reproduction is generated with a simple device, and subjectively perfect image reproduction is generated with a more complex device. ...

System of indication in particular applicable to a transmission of images or television

PROCESS Of DEVELOPMENT Of a STANDARD SIGNAL OF TELEVISION COLORS AND CHAIN OF CATCH OF SIGHTS USING THIS PROCESS

SYSTEM FOR THE TRANSMISSION OF SIGNALS OF TELEVISION COLORS ON CHANNELS OR LINES OF TRANSMISSION HAS NARROW BAND

CHAINE DE DIFFUSION DE SIGNAUX DE TELEVISION EN COULEURS

CHAINE DE DIFFUSION DE SIGNAUX DE TELEVISION CARACTERISEE EN CE QU'ELLE COMPREND DANS LE SYSTEME D'EMISSION UN DISPOSITIF DE CODAGE COMPRENANT LUI-MEME, DANS LA VOIE LUMINANCE, UN PREMIER FILTRE 100 CONSTITUE D'UN PREMIER ADDITIONNEUR ET D'UNE PREMIERE LIGNE A RETARD, LE RETARD APPORTE PAR CELLE-CI ETANT EGAL A 312FOIS LA PERIODE LIGNE POUR LE SECAM ET LE PAL OU 263FOIS LA PERIODE LIGNE POUR LE NTSC, ET AU MOINS DEUX FILTRES BF ET HF COMPLEMENTAIRES 300, 400 DITS DEUXIEME ET TROISIEME, PREVUS POUR RESTREINDRE L'ACTION DU PREMIER FILTRE A LA BANDE DE FREQUENCE ALLOUEE A LA COMPOSANTE DE CHROMINANCE. UN PERFECTIONNEMENT EST APPORTE A CETTE STRUCTURE PROPOSEE SI LA CHAINE COMPORTE EN OUTRE DANS LE SYSTEME DE RECEPTION UN DISPOSITIF DE DECODAGE COMPRENANT LUI-MEME UN QUATRIEME FILTRE 80 DELIVRANT L'INFORMATION DE LUMINANCE NECESSAIRE A LA RECOMPOSITION DES COMPOSANTES DE COULEUR ROUGE, VERTE ET BLEUE, UN CINQUIEME FILTRE 90 CONSTITUE D'UN SOUSTRACTEUR ET D'UNE DEUXIEME LIGNE A RETARD, LE RETARD ...

A technique for the time compression multiplexing of three television signals

The present invention relates to a Time Compression Multiplexing (TCM) technique for transmitting three consecutive television picture signals from a television picture source during the time period normally used to send one television picture signal. More particularly, three consecutive lines or fields from a TV signal source are compressed into an ordinary line or field period, respectively, by sending one line or field as is, but time compressed, in one portion of a line or field period and sending two other lines or fields as differential signals, also time compressed, to occupy two separate and different portions of the same line or field period as is used by the first one line or field. With such technique it is possible to send three consecutive line or field signals from each of three separate colocated or non-colocated TV sources on a Time Division Multiple Access (TDMA) basis.

КВАНТОВАНИЕ ЦВЕТНОСТИ В КОДИРОВАНИИ ВИДЕОСИГНАЛОВ

Изобретение относится к средствам сигнализации дополнительных значений сдвига параметров квантования цветности (quantization parameter - QP). Технический результат заключается в расширении арсенала технических средств квантования цветности. Способ квантования цветности содержит этапы: идентификации двух или более начальных наборов значений сдвига QP на двух или более уровнях иерархии кодирования видеосигналов, причем каждый начальный набор значений сдвига QP цветности для задания QP цветности элементов видеоданных заключен в одном уровне иерархии кодирования видеосигналов; и для множества элементов видеоданных, вычисления набора значений QP цветности, посредством (i) добавления начальных наборов значений сдвига QP цветности, которые были идентифицированы для множества элементов видеоданных, и (ii) дополнительного набора значений сдвига QP цветности, который был идентифицирован для группы квантования. 4 н. и 16 з.п. ф-лы, 22 ил.

TV colour difference signal decoder - uses charge coupled devices for sync. demodulators, delay lines and matrix adders

The chrominance signal is split by two synchronous demodulators into the two video frequency components (B-Y)' and (R-Y)'. The two components are delayed by one TV line in delay lines in the form of shift registers for analogue signals. The two colour difference signals (B-Y) and (R-Y) are produced by addition of the two non-delayed to the corresponding delayed signal components. The colour difference signal (G-Y) is produced in a matrix adder to which the two (B-Y) and (R-Y) signals are applied in a specified ratio. The synchronous demodulators, delay lines, adders and the matrix adder are made in the form of a charge shifting circuit.

COLOUR DECODER FOR A PAL- OR SECAM- COLOUR TELEVISION RECEIVER

VERFAHREN ZUM SENDEN UND EMPFANGEN VON FARBFERNSEHSIGNALEN AUF ZWEI KANAELEN BEI SATELLITENUEBERTRAGUNG UND GERAET ZUR DURCHFUEHRUNG DES VERFAHRENS.

Isolation circuitry

Digital picture signal transmission

The invention relates to a method which assures compatibility between composite encoded and discrete coded colour television signals in the receiver unit. An accompanying identification signal is transmitted in a time multiplex frame of a broad band network, the frame structure of the time multiplexing system consisting of 32 horizontal lines and 68 vertical columns to provide 2176 time slots each time slot having 40 bits, and whereby the first time slot (column 0, line 0) is reserved for a synchronization. The identification signal ensuring automatic switch over of a coding-compatible receiver unit, comprising a synchro unit (3), a demultiplexer device (4), a buffer-store selector device (6), buffer stores (7, 8, 9) into which scanned values of the colour television signals are pushed with the aid of a selector signal generated by the buffer store selector device operated by the identification signal, and a decoder matrix (10) which in the case of component coding recovers the components ...

COLOUR TELEVISION CODING AND DECODING

CIRCUIT FOR THE TRANSFORMATION OF RGB SIGNALS INTO COMPONENT SIGNALS

COLOR TELEVISION TRANSMISSION AND/OR INFORMATION MEMORY SYSTEM WITH TIME MULTIPLEX CODING AND INFORMATION GIVER AND - RECEIVER HIEFUER

FARBFERNSEH-UEBERTRAGUNGS- BZW. INFORMATIONSSPEICHERSYSTEM MIT ZEITMULTIPLEXCODIERUNG UND INFORMATIONSGEBER UND -EMPFAENGER HIEFUER

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

CONTINUOUS INFORMATION ADD-ON SYSTEM

CHAIN DIFFUSION OF SIGNALS OF TELEVISION COLORS

SYSTEM OF CODING AND DECODING Of an ANALOGICAL SIGNAL OF VISION OF TELEVISION COLORS

PROCEDE DE TRANSMISSION DES SIGNAUX DE DIFFERENCE DE COULEUR EN TELEVISION, EMETTEUR ET RECEPTEUR DE SIGNAUX DE TELEVISION EN COULEURS COMPRENANT UN DISPOSITIF DE MISE EN OEUVRE DE CE PROCEDE, ET SYSTEME DE TRANSMISSION DE SIGNAUX DE TELEVISION EN COULEURS INCLUANT UN EMETTEUR ET/OU UN RECEPTEUR DE CE TYPE

Récepteur de signaux de télévision en couleurs comprenant un dispositif de décodage recevant du canal de transmission, sous forme séquentielle et ligne par ligne, des composantes de type U ou de type V alternativement et constitué des éléments suivants pour le traitement de ces composantes : a. Un circuit de démultiplexage 400 aiguillant vers l'une ou l'autre de deux voies de traitement les composantes de type U et de type V arrivant séquentiellement ; b. Dans la voie de traitement des composantes de type U : 1. Un premier circuit de sélection 520, 2. Un circuit d'interpolation 530, 3. Un deuxième circuit de sélection 540 ; c. Dans la voie de traitement des composantes de type V, des circuits similaires 610 à 640 ; Lesdits deuxièmes circuits de sélection 540 et 640 étant destinés à permettre la réception des composantes de type U et V soit d'une trame dite reconstruite à partir des trames transmises, soit d'une trame dite interpolée à partir de la trame reconstruite. (CF DESSIN DANS BOPI ...

SYSTEM FOR THE TRANSMISSION OF SIGNALS OF TELEVISION COLORS ON CHANNELS OR LINES OF TRANSMISSION HAS NARROW BAND

PROCESS Of DEVELOPMENT Of a STANDARD SIGNAL OF TELEVISION COLORS AND CHAIN OF CATCH OF SIGHTS USING THIS PROCESS

КВАНТОВАНИЕ ЦВЕТНОСТИ В КОДИРОВАНИИ ВИДЕОСИГНАЛОВ

Изобретение относится к вычислительной технике. Технический результат – расширение арсенала технических средств квантования цветности. Способ декодирования видеоизображения содержит: прием в битовом потоке кодированного видеоизображения, множества значений сдвига параметра квантования (QP) цветности и множества групп квантования, причем каждая группа квантования содержит набор элементов кодирования; и декодирование кодированного видеоизображения путем вычисления множества QP цветности для видеоизображения и использования вычисленных QP цветности для декодирования видеоизображения, причем упомянутое вычисление включает в себя вычисление значения QP цветности для элементов кодирования каждой из множества групп квантования посредством: использования индекса, связанного с группой квантования, для выбора значения сдвига QP цветности из множества значений сдвига QP цветности и вычисления значения QP цветности для набора элементов кодирования группы квантования на основе выбранного значения сдвига ...

КВАНТОВАНИЕ ЦВЕТНОСТИ В КОДИРОВАНИИ ВИДЕОСИГНАЛОВ

Изобретение относится к кодированию/декодированию видеосигналов. Технический результат - расширение арсенала технических средств квантования цветности для сигнализации дополнительных значений сдвига параметра квантования (QP) цветности. Предложен способ сигнализации дополнительных значений сдвига QP цветности, которые являются конкретными для групп квантования, причем каждая группа квантования задает собственный набор значений сдвига QP цветности, при этом осуществляют прием множества наборов значений сдвига параметров QP, ассоциированных с кодированным видеоизображением, где кодированное видеоизображение включает множество групп квантования, а каждая группа квантования содержит по меньшей мере один элемент кодирования; выбор одного набора значений сдвига цветности QP из множества наборов значений сдвига цветности QP для конкретной группы квантования из множества групп квантования; и расчет набора параметров квантования цветности для элемента кодирования в конкретной группе квантования ...

SCHALTUNGSANORDNUNG ZUR VERKOPPLUNG DER FARBTRAEGER-RUHEFREQUENZEN EINES FARBTRAEGERSIGNALS NACH DEM SECAM-STANDARD

Video signal processing circuit

Colour television transmission or data storage system with time-division multiplex encoding and data generator and receiver suitable therefor

In a television transmission system, an encoding circuit in a data generator transmits (or stores) identification information relating to variable numbers of television lines or variable portions of television lines in which luminance and chrominance information occur, compressed where appropriate. The data receiver includes a simple, properly adaptable decoding circuit which comprises presettable counters for counting portions of television lines and for counting television lines, outputs of these counters being coupled to address inputs of a programmable memory which is coupled to a multiplexer which is switchable by the identification information and is followed by a logic circuit for generating control signals for a chrominance memory having the same write and read rates and for luminance and chrominance memories having said write rates and several read rates, under the control of a clock pulse source which is switchable via the logic circuit and the identification information. In the ...

VIDEO SIGNAL PROCESSING CIRCUIT

EXTENDED TV SYSTEM

TIME-DIVISION MULTIPLEX ENCODING/DECODING OF COLOUR TELEVISION SIGNAL

SYSTEM FOR ADAPTIVELY GENERATING SIGNAL IN ALTERNATE FORMATS AS FOR AN EDTV SYSTEM

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

CONTINUOUS INFORMATION ADD-ON SYSTEM

DEVICE OF DECIPHERING Of IMAGES OF TELEVISION BROUILLEES BY APPLICATION TO the VIDEO SIGNALS OF CIRCULAR SHIFTS

DEVICE TO EMIT AND RECEIVE AT THE SAME TIME A SIGNAL OF TELEVISION AND AN ADDITIONAL SIGNAL IN THE WAVEBAND OCCUPIED BY THE SIGNAL OF TELEVISION

Coding and decoding circuits for TV diffusion network - requires magnetically coded key to operate decoder allowing separation and demodulation of received signals

SYSTEME DE STOCKAGE D'INFORMATION RESPECTIVEMENT DE TRANSMISSION POUR TELEVISION EN COULEURS A CODAGE EN MULTIPLEX A DIVISION DANS LE TEMPS ET GENERATEUR ET RECEPTEUR D'INFORMATION

DANS LE SYSTEME, UN CIRCUIT DE CODAGE DANS LE GENERATEUR D'INFORMATION, DE L'INFORMATION D'IDENTIFICATION EST EMISE RESPECTIVEMENT STOCKEE ET CONCERNE DES NOMBRES VARIABLES DE LIGNES DE TELEVISION RESPECTIVEMENT DES PARTIES VARIABLES DE LIGNES DE TELEVISION, PRESENTANT, OU NON, DE L'INFORMATION DE CHROMINANCE ET DE LUMINANCE NON COMPRIMEE. DANS LE RECEPTEUR D'INFORMATION EST PREVU UN SIMPLE CIRCUIT DE DECODAGE CONVENABLEMENT ADAPTABLE ET MUNI DE COMPTEURS PREREGLABLES DE PARTIES DE LIGNES DE TELEVISION HCT ET DE LIGNES DE TELEVISION VCT, COMPTEURS 9 DONT LES SORTIES SONT COUPLEES AUX ENTREES D'ADRESSE D'UNE MEMOIRE PROGRAMMABLE 10 SUIVIE D'UN CIRCUIT LOGIQUE 14, PAR L'INTERMEDIAIRE D'UN DISPOSITIF MULTIPLEX A COMMUTER PAR L'INFORMATION D'IDENTIFICATION 13 AFIN D'ENGENDRER DES SIGNAUX DE COMMANDE POUR UNE MEMOIRE DE CHROMINANCE A LA MEME VITESSE D'INSCRIPTION ET DE LECTURE 16 ET POUR DES MEMOIRES DE CHROMINANCE ET DE LUMINANCE A LADITE VITESSE D'INSCRIPTION ET PLUSIEURS VITESSES DE LECTURE ...

SYSTEME DE CODAGE ET DE DECODAGE D'UN SIGNAL ANALOGIQUE DE VISION DE TELEVISION EN COULEURS

LE CODAGE EST EQUIVALENT A UNE PERMUTATION DES BANDES DE FREQUENCE DES SIGNAUX DE LUMINANCE ET DE CHROMINANCE COMPOSANT LE SIGNAL DE VISION. DANS LE CODEUR, LA VOIE DE LUMINANCE L RECOIT LE SIGNAL DE LUMINANCE FILTRE PASSE-BAS 23 DANS UNE PREMIERE BANDE DE FREQUENCE DF ET LE TRANSPOSE AU MOYEN D'UN CIRCUIT DE MODULATION DE FREQUENCE 3 DANS UNE SECONDE BANDE DE FREQUENCE DF SUPERIEURE A LA PREMIERE, CONTENANT LA BANDE SPECTRALE DU SIGNAL DE CHROMINANCE INITIAL. LA VOIE DE CHROMINANCE C RECOIT LE SIGNAL DE CHROMINANCE FILTRE PASSE-BANDE 24 DANS LASECONDE BANDE DE FREQUENCE DF ET LE TRANSPOSE AU MOYEN D'UN CIRCUIT DE CHANGEMENT DE FREQUENCE 4 DANS UNE BANDE LATERALE INFERIEURE DE MODULATION INCLUSE DANS LA PREMIERE BANDE DE FREQUENCE DF. CONJOINTEMENT A CES DEUX TRANSPOSITIONS DE FREQUENCE, LE SIGNAL DE LUMINANCE PEUT ETRE CHIFFRE AU RYTHME D'UNE SEQUENCE ALEATOIRE, PAR INVERSIONS DE POLARITE DE SON AMPLITUDE. LE SIGNAL DE SON S PEUT ETRE EGALEMENT TRANSPOSE EN FREQUENCE DANS UNE BANDE DF ...

영상 신호 송신 장치, 영상 신호 수신 장치, 및 영상 신호 전송 시스템

... 다양한 시스템 사양에 대한 대응이 가능한 영상 신호 송신 장치 등에 관한 것이다. 당해 장치는, 패커 유닛, 인코더 유닛, 시리얼라이저를 구비한다. 패커 유닛은, 1 또는 그 이상의 픽셀분의 영상 신호로부터, 픽셀수 및 그 영상 신호를 구성하는 색 신호의 계조 비트수에 따른 사이즈의 패킷 구성으로 복수의 블록 신호를 생성한다. 이 때, 픽셀수 및 계조 비트수에 따른 폭의 펄스를 포함하는 제어 신호도 생성된다. 인코더 유닛은, 블록 신호에 대해, 펄스의 유무로 구별되는 제어 신호의 제 1 기간과 제 2 기간에서 인코드 효율이 서로 상이한 인코드 처리를 실시한다.

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

КВАНТОВАНИЕ ЦВЕТНОСТИ В КОДИРОВАНИИ ВИДЕОСИГНАЛОВ

System for transmitting colour television signals

In a system for transmitting colour television signals in which a chrominance signal is transmitted by carrier frequency outside the frequency range of a luminance signal, a number of auxiliary signals of constant amplitude and having different frequencies within the frequency range provided for the chrominance signal and a grey value are transmitted in a time segment not provided for the picture content. The frequency of a first auxiliary signal preferably corresponds to the frequency of a carrier provided for the transmission of the chrominance signal, a second and a third auxiliary signal exhibiting frequencies above and below the frequency of the carrier respectively.

Anordnung zum Uebertragen und Signalquelle zum Abgeben digitaler Bildsignale.

Isolation circuitry

MULTIPLE SIGNAL TRANSMISSION SYSTEM OF ONE OR MORE INFORMATION SIGNALS ON A COLOUR TELEVISION SIGNAL

... 1,268,136. Multiplex pulse code signalling; colour television. NIPPON HOSO KYOKAI. 20 May, 1970 [22 May, 1969], No. 24320/70. Headings H4F and H4L. A system for multiplexing at least one information signal, e.g. a speech signal, with a colour television signal, comprises means for sampling the information signal by pulses having a repetition frequency which is an integral multiple of the horizontal scanning frequency and converting the signal samples into a pulse coded signal in which the bit repetition frequency and phase is the same as the frequency and phase of the reference colour sub-carrier, and means for transmitting the pulse coded signal during the period of the horizontal blanking signal in the period which would be occupied by a colour burst signal in a conventional system. As shown in Fig. 4, a speech signal is sampled at 1 by pulses having a repetition frequency equal to twice the line scanning frequency, converted to digital form at 2 and stored in a register 3. A binary or ...

Method and apparatus for conversion of dynamic range of video signals

A method and device for converting a video signal from a lower dynamic range LDR source to produce a signal usable by target devices of a higher dynamic range HDR. The signal is separated into luminance Y(SDR) and colour components. The luminance component is modified by applying an expansion function 16 to the luminance component for luminance values above a threshold, applying a gamma function 18 and then applying a scaling function 20. The modified luminance and separate colour components are then provided as an output signal for display on a target device of a higher dynamic range. The expansion of luminance ensures that the luminance range appropriately matches the range for a target display. By applying the expansion luminance values above a threshold, values below a threshold can be maintained with appropriate values for display. Preferably the expansion function is linear and the gamma modifying function is a power law with exponent equal to the ratio of the LDR gamma to HDR gamma ...

COLOR TELEVISION TRANSMISSION AND/OR INFORMATION MEMORY SYSTEM WITH TIME MULTIPLEX CODING AND INFORMATION GIVER AND - RECEIVER HIEFUER

PROCEDURE FOR TRANSFERRING A COLOR TELEVISION SIGNAL.

ARRANGEMENT FOR TRANSFERRING AND SIGNAL SOURCE FOR DELIVERING DIGITAL PICTURE SIGNALS.

DEVICE OF DECIPHERING Of IMAGES OF TELEVISION BROUILLEES BY APPLICATION TO the VIDEO SIGNALS OF CIRCULAR SHIFTS

DISPOSITIF DE DECHIFFREMENT D'IMAGES DE TELEVISION BROUILLEES, A L'EMISSION, PAR APPLICATION AUX SIGNAUX VIDEO DE PERMUTATIONS CIRCULAIRES, A PARTIR D'ADRESSES X DE POINTS DE COUPURE DELIVREES PAR UN GENERATEUR D'ADRESSES NUMERIQUES PSEUDO-ALEATOIRES. SELON QUE LES SIGNAUX SONT DES SIGNAUX COMPOSITES DE TYPE SECAM, PAL OU NTSC OU DES COMPOSANTES SEPAREES TELLES QUE DES COMPOSANTES ANALOGIQUES DE TYPE MAC, CE DISPOSITIF COMPREND POUR LA REMISE EN ORDRE DES SIGNAUX PERMUTES DEUX MEMOIRES M ET M DE TYPE SERIE OU DEUX JEUX DE MEMOIRES M, M ET M, M DE TYPE SERIE UTILISES ALTERNATIVEMENT, LE NOMBRE N DE CELLULES DE CHAQUE MEMOIRE ETANT EGAL A LA LONGUEUR DU SIGNAL UTILE A LAQUELLE ON APPLIQUE LA PERMUTATION CIRCULAIRE. LE DECHIFFREMENT EST REALISE PAR REBOUCLAGE DES MEMOIRES SUR ELLES-MEMES ET APPLICATION A PARTIR D'UN CIRCUIT DE COMMANDE DE DECHIFFREMENT 300 D'UNE HORLOGE EFFECTUANT UN DECALAGE Y N-X COMPLEMENTAIRE DU DECALAGE OPERE A L'EMISSION A PARTIR DE L'ADRESSE X. APPLICATION: RECEPTEURS DE TELEVISION.

FERGTELEVISIONSOVERFORINGS- ELLER DATALAGRINGSANLEGGNING MED TIDSDELNINGSMULTIPLEXKODNING SAMT DATAGENERATOR OCH- MOTTAGARE SOM ER LEMPLIGA HERFOR

Video signal transmission device, video signal reception device and video signal transferring system

關於能對應各種系統規格的影像信號發送裝置等。該裝置具備：封包器單元、編碼器單元、串行器。封包器單元從1或其以上的畫素份的影像信號中，以對應畫素數及構成該影像信號的色信號的灰階位元數的大小的封包構成，生成複數區塊信號。此時，也生成包含具有對應畫素數及灰階位元數的寬度的脈衝之控制信號。編碼器單元對於區塊信號，在以有無脈衝來區別的控制信號之第1期間及第2期間，進行編碼效率相互不同的編碼處理。

Video signal transmission device, video signal reception device and video signal transferring system

The present invention relates to a video signal transmission device and the like that can support a variety of system specifications. The device includes a packer unit, an encoder unit, and a serializer. The packer unit generates, from a video signal of one or more pixels, a plurality of block signals having a packet configuration of size corresponding to the number of pixels and the number of tone bits of a color signal constituting a video signal. At this time, a control signal including a pulse having a width corresponding to the number of pixels and the number of tone bits is also generated. The encoder unit applies encoding processing having encoding efficiencies that are different between a first period and a second period of a control signal that are distinguished depending on existence or non-existence of a pulse to the block signals.

CODER FUER FARBBILDSIGNALE

Erweitertes Fernsehsystem

VERFAHREN ZUM SENDEN UND EMPFANGEN VON KOMPATIBEL FARBFERNSEHSIGNALEN AUF ZWEI KANAELEN BEI SATELLITENUEBERTRAGUNG UND GERAET ZUR DURCHFUEHRUNG DES VERFAHRENS.

Video signal transmitter

Improvements in or relating to Colour Television Systems

... 1,161,415. Colour television. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 5 Sept., 1966, No. 39504/66. Heading H4F. The invention relates to a 625 line/50 field colour television system in which there is a chrominance carrier signal which is reversed in phase for alternate lines (e.g. the P.A.L. system or the amplitude-modulated SECAM system under certain colour conditions) and wherein an interlaced dot pattern in adjacent field lines is produced by selecting the colour carrier frequency to have a quarter line offset in relation to the line frequency. In the prior art the carrier is also shifted in frequency by half the raster frequency (or a multiple thereof) so as to cause the production of a stationary dot pattern, the complete pattern being built up over eight rasters. The production of a frequency shift of half raster frequency (i.e. nominally 25 c/s.) is difficult and in accordance with the invention is avoided by slightly changing the line frequency of the system from the standard for ...

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

COLOUR TELEVISION TRANSMISSION OR DATA STORAGE SYSTEM

Frequency locking system with controlled oscillator - first oscillator is sampled at second frequency to derive control voltage signal

A frequency locking circuit, especially for use in locking colour carrier and line frequency in a colour television system, where one frequency is a multiple of the other, with a generator (1) of variable frequency for generation of a signal at frequency f1 and with means (2) for selective sampling at intervals and storing the results, of the frequency f1, by means of a scanning signal at frequency f2, from the results of which a control voltage for the variable oscillator is derived to lock the frequency of the generator at f1. The sampling system can consist of an electronic switch charging a capacitor.

Chroma quantization in video coding

A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

Display Signal Conversion Apparatus

A display device includes a display panel including red, blue, green and white (RBGW) sub pixels, a signal conversion apparatus for converting an input signal having a first color format and color arrangement into a display signal having a second color format and color arrangement, a color conversion unit configured to convert the first color format into the second color format; a sub pixel position determining signal which determines a color arrangement of a sub pixel position of the display panel, and a sub pixel signal generation unit configured to generate a sub pixel signal having the second color format and color arrangement based on the sub pixel position determining signal.

Process for generating a standard colour television signal and pick-up device therefor

СПОСОБ И УСТРОЙСТВО ВНУТРЕННЕГО ПРЕДСКАЗАНИЯ ИЗОБРАЖЕНИЯ

... 1. Способ внутреннего предсказания изображения, причем способ содержит:получение параметров, представляющих корреляцию между блоком цветности, который должен быть внутренне предсказан, и блоком яркости на основании восстановленных соседних пикселей блока цветности и восстановленных соседних пикселей пикселя яркости, соответствующего блоку цветности; ипредсказание блока цветности из блока яркости посредством использования этих параметров,при этом получение параметров содержит выполнение заранее определенной операции в отношении восстановленных соседних пикселей блока цветности и восстановленных соседних пикселей блока яркости,при этом заранее определенная операция содержит процесс адаптивного масштабирования изменяющихся битовых глубин упомянутых параметров, чтобы уменьшить размер таблицы поиска и предотвратить возникновение переполнения.2. Способ по п.1, в котором параметры содержат вес и сдвиг, которые определяют линейную корреляцию между восстановленными пикселями блока яркости и пикселями ...

Picture coding for, e.g. telefax and colour television

A picture cooling system in which the digitally sensed run length for black and white or the line command (MRC) and a deviation therefrom are coded by digit. Only the individual digits that make up the numbers are coded. If necessary, several lines can be code multiplex condensed. In narrow band transmission the phase jump or phase difference and/or the amplitude difference is changed. In television, code multiplexing condensation of all signals allows only one carrier to be used.

Method for transmitting a colour television signal in time- and frequency-division multiplex

To transmit a colour television signal which contains a luminance signal component and a modulated colour subcarrier, only the luminance signal is transmitted with the full bandwidth of the transmission channel during an arbitrary line and a frequency-division multiplex which consists of the luminance signal reduced in bandwidth and the modulated colour subcarrier is transmitted during the subsequent line. Together with the wide-band luminance signal and the frequency-division multiplex, a colour synchronisation signal (burst) is also transmitted. The high-frequency components of the luminance signal component are prefiltered in the vertical direction at the transmitter end in such a manner that the undelayed high-frequency luminance signal components are added in equal parts to the high-frequency luminance signal components delayed by one television line. As an alternative to this, the undelayed wide-band luminance signal component and the wide-band luminance signal component delayed by ...

Empfaenger fuer ein Farbfernsehsystem

Isolation circuitry

METHOD FOR GENERATING A TIME DIVISION MULTIPLEX COLOUR VIDEO SIGNAL

Improvements in or relating to receivers for colour television systems

... 871,996. Television. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 9, 1957 [Aug. 13, 1956], No. 25206/57. Class 40(3) In a compatible colour television receiver for a system in which a broad-band luminance (or equivalent) signal is transmitted together with a narrow-band chrominance signal the H.F. components of the former signal are added to the latter signal by combining the broad and narrow band signals with opposite polarity, passing the combined signals through a low-pass filter, the pass band of which is not greater than the bandwidth of the narrow-band signals and then combining the broad-band signal with the output signal from the filter. With this arrangement colour errors in the reproduction of components (in colour or monochrome) having their frequencies located in the region in which the two frequency bands adjoin is prevented without the need to employ filters of high accuracy (and therefore of high expense) to produce the necessary sharp transition between the two signals, Fig.

COLOUR TELEVISION TRANSMISSION OR DATA STORAGE SYSTEM

... 34 In the system an encoding circuit in the data generator transmits or stores identification information relating to variable numbers of television lines or variable portions of television lines in which luminance and chrominance information occurs, compressed where appropriate. The data receiver comprises a simple, properly adaptable decoding circuit which comprises presettable counters for counting portions of television lines and for counting television lines, outputs of these counters being coupled to address inputs of a programmable memory which is coupled to a multiplexer which is switchable by the identification information and is followed by a logic circuit for generating control signals for a chrominance memory having the same write and read rates and for luminance and chrominance memories having said write rates and several read rates, under the control of a clock pulse source which is switchable via the logic circuit and the identification information. In the data generator ...

MONOCHROME-COMPATIBLE COLOR SLOW SCAN TELEVISION SYSTEM

MONOCHROME-COMPATIBLE COLOR SLOW SCAN TELEVISION SYSTEM A method and system for translating between three complementary color component slow scan video signals and a composite color slow scan video signal containing a luminance information signal within a visible line interval of each slow scan video signal line and a chrominance information signal within the non-visible portion of each slow scan video signal line. The chrominance information signal includes during the non-visible portions of alternate slow scan video signal lines, a first color difference signal derived by subtracting the luminance information signal from one of three complementary color slow scan video signals and a second color difference signal derived by subtracting the luminance information signal from another of three complementary color slow scan video signals. The three complementary color component slow scan video signals are translated into the composite color slow scan video signal for transmission. Upon reception ...

Improvements with the systems of television relay station

Video signal transmission device, video signal reception device and video signal transferring system

The present invention relates to a video signal transmission device and the like that can support a variety of system specifications. The device includes a packer unit, an encoder unit, and a serializer. The packer unit generates, from a video signal of one or more pixels, a plurality of block signals having a packet configuration of size corresponding to the number of pixels and the number of tone bits of a color signal constituting a video signal. At this time, a control signal including a pulse having a width corresponding to the number of pixels and the number of tone bits is also generated. The encoder unit applies encoding processing having encoding efficiencies that are different between a first period and a second period of a control signal that are distinguished depending on existence or non-existence of a pulse to the block signals.

System for allowing two television programs simultaneously to use the normal bandwidth for one program by chrominance time compression and luminance bandwidth reduction

A method and apparatus for bandwidth compression allows two television programs to simultaneously occupy the bandwidth normally allowed for one television program. The composite video signals from first and second program sources are separated into chrominance, luminance and synchronization component signals for each. The chrominance signals for each program source are compressed in time, and the sync pulse from one of the program sources is used to generate a narrow sync pulse. The luminance signal from the one program source modulates a carrier signal, and the luminance signal from the other program source modulates a subcarrier signal. The compressed chrominance signals for the first and second program sources are transmitted, with the narrow sync pulse, for alternate lines of each image frame for each program, respectively, during the inactive video time, and the luminance signals for both program sources are transmitted during the active video time for each line of each image frame ...

Method of transmitting information according to which the signals are coded by the amplitude size of the half waves or the periods of a sinusoidally shaped alternating current

Due to pulse amplitude modulation (PAM) there is an unwanted signal being undesirably strong and a broadening of the frequency band as a result of the pulses. In the case of digital binary-coding of signals with half-waves or periods of an alternating current and the code elements having small and large amplitude values, high frequencies are required. In the present invention, the samples of the pulse amplitude modulation of signals ranging from single polar/binary to continuous are being coded by half-waves or periods of an alternating current, also providing alternating currents of a lower frequency with predetermined mutual phase shifting for the samples. Due to these measures the aforementioned shortcomings are avoided.

Method for the transmission of the chrominance signals in colour television

In the NTSC, PAL and SECAM colour television system, the hue is coded by a phase angle of two alternating currents. Whilst the transmission is amplitude-modulated in the NTSC and in the PAL system, the SECAM system provides for frequency modulation. Time and again, phase errors occur in the transmitting and receiving devices and also on the transmission link. In the PAL system, such errors are compensated by complicated elaborate circuits. In the SECAM system, other errors occur due to the frequency modulation. The present invention avoids phase as a transmission feature. It transmits the quantities of hue and colour saturation digitally or by analog means by means of an alternating current. The error is not only avoided but bandwidth is also gained, particularly in the binary-coded alternating-current transmission.

Video signal processing circuit

A video signal processing circuit is capable of performing a sync separation and generating an odd/even field detection and a vertical blanking pulse for both an NTSC mode or a PAL mode video signal. The circuit comprises a sync signal separator (1) for separating the input video signal into a horizontal sync signal (3A) and a composite sync signal, (3B) and a vertical sync signal detector (2) for detecting a vertical sync signal from the composite sync signal. A window pulse generator (3) for generating a window pulse (3F) having a different width according to the NTSC or PAL signal mode, combines the detected vertical sync signal with the horizontal sync signal. An odd/even field detector (4) receives the window pulse and the vertical sync signal and detects the number of the pulses of the vertical sync signal within the window pulse interval. A vertical blanking interval detector and pulse generator (5) counts a predetermined number of horizontal sync signal pulses, the window pulse ...

Improvements in or relating to television systems

... 527,310. Television. KOLSTER-BRANDES, Ltd., BEATTY, W. A., and CHATTERJEA, P. K. April 3, 1939, No. 10344. [Class 40 (iii)] Rectangular synchronizing signals of fixed amplitude outside the range of the picture signals are time modulated as a function of factors relating to the vision, or accompanying sound, and one edge 13 of the pulses recurs at equal intervals of time and is used for timing the scanning. At the receiver, the pulses are separated by an amplitude filter and used to set up a current or voltage varying with said factors. The modulation is continuously variable and influences the synchronizing impulses at the end of each line as well as those which occur in a black-out period Cl, C2 following (or preceding) a train of pulses in a framing period B1, B2. The pulses control line-scanning generators. Means for observing the time modulation is continuously operative or only operative during the framing black-out period. The modulation may be a function of the average level of the ...

Video transmission device, video display device, and video transmission method

A device includes a transmitter that transmits, via an interface comprising first, second, and third transmission channels, video data having a 4:1:1 format to a display device. 4:1:1 represents a ratio of a sampling frequencies of a brightness component, to a first color difference component, to a second color difference component. The first and second color difference components of one pixel in a first horizontal line of a first frame of the video data are allocated and transmitted within two clock cycles of the first transmission channel. Brightness components of four pixels in the first horizontal line are allocated and transmitted within two clock cycles of the second and third transmission channels. The transmitter transmits the video data for all of the pixels of the first horizontal line, and thereafter, sets pixels in a second horizontal line as a target to be transmitted.

Communication control method and communication system

In a display system, a wireless transmitter receives video data and a CEC command from an AV amplifier, determines whether the received CEC command is a preset command or not, generates a confirmation command if it is determined that the CEC command is a preset command, and transmits the video data and the CEC command received from the AV amplifier and the confirmation command, to a projector. The projector receives the video data, the CEC command and the confirmation command transmitted from the wireless transmitter, and determines whether the received CEC command and confirmation command correspond to each other or not.

Video signal transmission device, video signal reception device and video signal transferring system

The present invention relates to a video signal transmission device and the like that can support a variety of system specifications. The device includes a packer unit, an encoder unit, and a serializer. The packer unit generates, from a video signal of one or more pixels, a plurality of block signals having a packet configuration of size corresponding to the number of pixels and the number of tone bits of a color signal constituting a video signal. At this time, a control signal including a pulse having a width corresponding to the number of pixels and the number of tone bits is also generated. The encoder unit applies encoding processing having encoding efficiencies that are different between a first period and a second period of a control signal that are distinguished depending on existence or non-existence of a pulse to the block signals.

Data transmission method, data loading device, data parsing device and data transmission system

A data transmission method, a data loading device, a data parsing device, and a data transmission system are described herein. The methods include acquiring original video data, acquiring data to be transmitted, processing the original video data according to the data to be transmitted to obtain target video data, and displaying the target video data and the original video data. The methods may further include after displaying the target video data and the original video data, collecting the displayed target video data and original video data, parsing the original video data and the target video data to obtain the data to be transmitted.

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING BROADCAST SIGNAL SO AS TO ADJUST COLOUR RANGE OF CONTENT

The present invention provides a method and an apparatus for transmitting and receiving a broadcast signal so as to adjust a colour range of content. The method for transmitting a broadcast signal according to an embodiment of the present invention comprises the steps of: encoding video data and signalling information including metadata with respect to the gamut of the video data; generating a broadcast signal including the encoded video data and signalling information; and transmitting the generated broadcast signal. 1. A method of transmitting a broadcast signal , the method comprising:encoding video data and signaling information comprising metadata of gamut of the video data;generating a broadcast signal comprising the encoded video data and signaling information; andtransmitting the generated broadcast signal.2. The method according to claim 1 , wherein the metadata comprises original gamut information indicating gamut of the video data and target gamut information indicating target gamut as a conversion target of gamut of the video data.3. The method according to claim 2 , wherein the metadata comprises information on the number of regions present in the target gamut claim 2 , information indicating a method of distinguishing the regions claim 2 , and detailed information for distinguishing the regions according to the method of distinguishing the regions.4. The method according to claim 3 , wherein the detailed information for distinguishing the regions comprises information on a start point and end point for calculation of a distance as a reference for distinguishing the regions and coordinate information on one or more color spaces for distinguishing the regions.5. The method according to claim 4 , wherein the metadata comprises information indicating a type of a weighting function used to convert gamut of the video data into target gamut and information indicating a coefficient used in the weighting function.6. The method according to claim 5 , wherein:the ...

Broadcasting mode auto recognition apparatus

내용없음 No content

Y/c signal modulation method and display apparatus

The method is for obtaining double vertical resolution by multiplexing Y signal with 2-line Y signals (Ya,Yb) to perform double scanning while maintaining compatibility with conventional NTSC video. The method includes a multiplexer (11) for multiplexing and modulating the input video with color subcarrier 2fc* to generate YQW signal having double bandwidth of that of original Y signal, an adder (24) for integrating and modulating pre-modulated signals to generate YQ/C signal of 0-10.0 MHz, and a divider (33) for demodulating the modulated signals to generate Ya, Yb, chroma and FM audio signal.

How to edit user program using PPI screen

본 발명은 피오피화면을 이용한 유저프로그램 편집방법에 관한 것으로, 종래에는 단순히 프로그램 테이블을 디스플레이하여 비휘발성메모리(NVM)에 저장된 프로그램들을 사용자에게 알려주는 티브이들은 있지만 이 테이블상에서 사용자의 편집을 적요한 것을 아직 없었다. 따라서 본 발명은 프로그램 테이블상에서 피오피(POP)화면을 통하여 비휘발성 메모리(NVM)에 저장된 전체 프로그램에 대한 확인 용이하며 프로그램편집 기능을 이용하여 사용자의 비휘발성 메모리에 자유로운 액세스가 가능하도록 하였다.

Patent JPS5037972B1

Method of transmitting television colour difference signals, transmitter and receiver of colour television signals comprising a device for implementing this method, and colour television signal transmission system including a transmitter and/or a receiver of this type

Colour television signal receiver comprising a decoding device receiving from the transmission channel, in sequential form and line by line, components of type U or of type V alternately and which consists of the following elements for processing these components: a. A demultiplexing circuit 400 routing towards one or the other of two processing paths the components of type U and of type V arriving sequentially; b. In the path for processing the components of type U: 1. A first selection circuit 520, 2. An interpolation circuit 530, 3. A second selection circuit 540; c. In the path for processing the components of type V, similar circuits 610 to 640; The said second selection circuits 540 and 640 being intended to allow the reception of components of type U and V either from a frame said to be reconstructed from the transmitted frames, or from a frame said to be interpolated from the reconstructed frame.

Extended television system

확장된 텔레비젼 시스템에서, 부수신호가 확장된 텔레비젼 신호의 수평 블랭킹 간격에 인코드되어 한번 또는 부수신호를 생성하기 위해 컬러 버스트를 오버랩시킨다, 컬러 버스트 및 부수신호를 오버랩시킴으로 유발되는 어떤 작용은 n에 대해 컬러 서브캐리어 주파수가 0과 같고 n에 대해 1과 같은 n배로 0스펙트럼을 갖도록 부수신호를 처리함으로서 피할 수 있거나 혹은 적어도 충분히 완화된다. In an extended television system, an incident signal is encoded in the horizontal blanking interval of the extended television signal, overlapping the color burst to produce one or an incident signal, any action caused by overlapping the color burst and the incident signal By processing the incident signal such that the color subcarrier frequency is equal to 0 and has a zero spectrum with n times equal to 1 for n, it can be avoided or at least sufficiently relaxed.

METHOD FOR TRANSMITTING COLOR DIFFERENCE SIGNALS IN TELEVISION, TRANSMITTER AND RECEIVER OF COLOR TELEVISION SIGNALS INCLUDING A DEVICE FOR CARRYING OUT THIS METHOD, AND COLOR TELEVISION SIGNAL TRANSMISSION SYSTEM INCLUDING A TRANSMITTER AND / OR A RECEIVER OF THIS TYPE

Method and circuit for converting RGB signals to component signals

Circuits for converting analogue RGB signals to analogue component signals are well known. Normally text signals are added to component signals in an analogue manner. Special problems may arise in case of upconverting such interlace video signals to a higher field frequency. Vertical jitter or unsharpness of the text can be introduced. In the RGB domain text signals can be represented by binarylike amplitude values (R, G, B). Therefore such text signals are generated digitally in the RGB domain and converted digitally to the component domain (Y, U, V). A simple circuitry, including three inverters (11, 12, 13), a latch (14) and two adders (15, 16), is required only.

Circuit for converting RGB signals to component signals

Television signal generation system and video signal processing system

내용 없음

Method and apparatus for transmitting and receiving broadcast signal so as to adjust colour range of content

UTVIDGAT TELEVISIONSSYSTEM

SYSTEM FOR COUPLING A FIRST FREQUENCY WITH A SECOND FREQUENCY

Color television system determination circuit

Colour television system

In a colour television signal the total line length or period and the bandwidth requirement can be conventional, but the active line period is increased to e.g. about 94% of the line period, giving an aspect ratio of about 3:2 instead of 4:3.

Video signal circuit

The video signal processing circuit is for extracting a synchronous signal from a video signal of NTSC and PAL type and for detecting an even or an odd field using one chip. The circuit comprises a synchronous signal detector (1) for extracting a horizontal and a composite synchronous signal from a video signal, a vertical synchronous signal detector (2) for extracting a vertical synchronous signal, a window pulse generator (3) for generating window pulses with pulse width varying by NTSC mode or PAL mode, an even/odd field detector (4) for detecting number of vertical clock signal within the window pulse width, and a vertical blanking period detector (5) for counting the vertical synchronous signal.

System for sending and receiving a TV signal.

A technique for the time frequency multiplexing of three television signals.

The present invention relates to a technique for the Time-Frequency-Multiplexing (TFM) of three television signals. More particularly, three fields of a TV signal are sent simultaneously to a remote receiver by transmitting one field as is in the baseband of a standard television system signal while the other two fields are transmitted as differential signals, quadrature amplitude modulated onto a subcarrier frequency above baseband. The two differential signals can comprise two field differential signals or a frame and a field differential signal. Arrangements are also provided for transmitters and receivers for implementing the present technique.

System for adaptively generating signal in alternate formats as for an edtv system.

Un système de génération de signaux vidéo génère des signaux vidéo codés (314) qui représentent moins que la totalité des informations vidéo. Des circuits de génération de signaux auxiliaires génèrent une paire de signaux auxiliaires (S1, S2) qui représentent en partie les informations vidéo restantes. Le premier signal auxiliaire (S1) de la paire de signaux auxiliaires comprend un signal de fidélité relativement élevée mais à largeur de bande limitée. Le deuxième signal auxiliaire (S2) comprend des informations de fidélité relativement réduite mais a une largeur de bande plus grande. Selon la densité (304) des informations auxiliaires, les premier et deuxième signaux sont sélectionnés (310) de façon à produire un signal auxiliaire de sortie qui est combiné (316) avec les signaux vidéo codés à des fins de transmission. Un récepteur (320-362) sensible aux signaux transmis sépare (320) les signaux vidéo des signaux auxiliaires. Les signaux vidéo et auxiliaires sont décodés (322-362) et utilisés afin de générer des images affichées améliorées. A video signal generation system generates encoded video signals (314) which represent less than all of the video information. Auxiliary signal generation circuits generate a pair of auxiliary signals (S1, S2) which partially represent the remaining video information. The first auxiliary signal (S1) of the pair of auxiliary signals comprises a relatively high fidelity signal but with limited bandwidth. The second auxiliary signal (S2) includes relatively reduced fidelity information but has a larger bandwidth. Depending on the density (304) of the auxiliary information, the first and second signals are selected (310) to produce an auxiliary output signal which is combined (316) with the encoded video signals for transmission. A receiver (320-362) responsive to the transmitted signals separates (320) the video signals from the auxiliary signals. The video and auxiliary signals are decoded (322-362) and used to generate improved ...

User program editing method using pop screen

The user program editing method through a use of a POP(picture out picture) screen comprises a first step of checking whether a first movement key is pressed; a second step of storing a current program number by pressing a second movement key if it was not pressed in the first step, and storing position data which is the data for the position where the current program is moved and situated, if pressed, and then storing a number of a program to be moved by a digit key; a third step of comparing a number of the current program stored in the second step with a number of the program to be moved; a fourth step of not performing a "movement" if a number of two programs is same in the third step, and restoring a number of the current program, and if not, writing the contents of a number of the stored current program at a memory of a number of the program to be moved, and moving it; and a fifth step of deleting the contents of the current program stored after a completion of the movement in the fourth step so as to be replaced by initial data, whereby enabling to edit a program under a decision of a user on a POP screen of a particularly wide screen TV.

Video signal processing circuit

Image intra prediction method and apparatus

Disclosed are an image intra prediction method and apparatus. An intra prediction method according to an embodiment of the present invention comprises the steps of: obtaining parameters indicating a correlation between a chrominance block and a luminance block on the basis of neighboring pixels restored in the chrominance block which is intra predicted and neighboring pixels restored in the luminance block corresponding to the chrominance block; and predicting the chrominance block from the luminance block by using the obtained parameters. Also, according to an embodiment of the present invention, the step of obtaining parameters comprises obtaining parameters through a predetermined operation process using neighbor pixels restored in the chrominance and luminance blocks, where the operation process comprises a scaling process changing bit depths of the parameters to prevent overflow.

TPS decoder in an orthogonal frequency division multiplexing receiver

A receiver for orthogonal frequency division multiplexing (OFDM) signals, including an A/D converter for converting received analog signals to a digital signal data stream and an OFDM demodulator for producing a first set of complex I and Q components of subcarriers from the digital signal data stream. The receiver includes a CSI estimator for estimating Channel State Information (CSI) from the sets of complex I and Q components and a TPS decoder for decoding TPS data from the sets of complex I and Q components using the CSI.

Descrambler for television pictures scrambled by circular permutation

Method for transmitting information on a digital and/or analog basis, in which the coding is performed by the amplitudes of the half waves or periods of an alternating current

Digital and also analog information is already marked by the half- waves or periods of an alternating current of one frequency and transmitted via transmission paths. The invention aims at transmitting even more information given the same bandwidth. This is achieved by the superimposition of two encoding alternating currents of the same frequency which are phase-shifted by 90 DEG with respect to one another, thus producing an alternating current of the same frequency with the information of both encoding alternating currents.

Broadcasting Method Discrimination Device and Method

방송방식판별장치 및 방법은 멀티방송방식으로 기록 및/또는 재생이 가능한 기록재생시스템에 있어서 수직동기신호를 이용하여 빠르고 정확하게 처리하고자 하는 방송방식을 판별하기 위한 것이다. 이를 위하여 기록 또는 재생을 위하여 인가되는 복합영상신호의 복합동기신호에서 소정의 클럭펄스를 이용하여 윈도우펄스를 발생시켜 수직동기구간의 펄스를 검출하기 위한 수직동기구간 펄스검출부, 수직동기구간 펄스검출부에서 출력되는 수직동기 구간의 수평동기펄스수를 카운트하여 인가되는 상기 방송방식을 판별하기 위한 방송방식 판별부를 포함하도록 구성된다. 따라서 방송방식변환에 따른 별도의 제어를 할 필요가 없으며, 수직동기신호를 이용하므로 방송방식판별을 빠른 시간내에 할 수 있고, 이를 하드웨어로도 구현하였으므로 종전의 소프트웨어처리에 비해 에러발생확률이 낮으며 집적도를 높일 수 있다.

Video transmission device, video display device, and video transmission method

実施形態の映像送信装置は、送信部を備える。送信部は、第１、第２及び第３の伝送チャンネルを有する通信インターフェースを介して、輝度成分と第１色差成分と第２色差成分との間のサンプリング周波数の比が４：１：１となる、４：１：１フォーマットの映像データを送信する際に、第１の伝送チャンネルの２クロックに第１色差成分と第２色差成分とを割り当てて送信し、第２及び第３の伝送チャンネルの２クロックに合計４画素の輝度成分を割り当てて、映像データを表示する映像表示装置に対して送信する。   The video transmission apparatus according to the embodiment includes a transmission unit. The transmission unit has a sampling frequency ratio of 4: 1: 1 between the luminance component, the first color difference component, and the second color difference component via the communication interface having the first, second, and third transmission channels. When transmitting the video data in the 4: 1: 1 format, the first and second color difference components are transmitted by assigning the first color difference component and the second color difference component to the two clocks of the first transmission channel, and the second and third transmission channels. The luminance components of a total of 4 pixels are allocated to 2 clocks of the image data and transmitted to a video display device that displays video data.

TPS decoder in an orthogonal frequency division multiplexing receiver

A receiver for orthogonal frequency division multiplexing (OFDM) signals, including an A/D converter for converting received analog signals to a digital signal data stream and an OFDM demodulator for producing a first set of complex I and Q components of subcarriers from the digital signal data stream. The receiver includes a CSI estimator for estimating Channel State Information (CSI) from the sets of complex I and Q components and a TPS decoder for decoding TPS data from the sets of complex I and Q components using the CSI.

Television system

Circuit for converting RGB signals into component signals

Colour television system

System for adaptively generating signal in altemate formats as for edtv system

一种视频信号发生系统产生代表少于全部视频信息的已编码视频信号(314)。辅助信号发生电路产生部分地代表其余视频信号的辅助信号S1、S2。根据辅助信号密度(304)选择(310)第一和第二辅助信号以产生输出，把该输出信号与已编码视频信号组合(316)，以便发送。响应发送信号的接收机(320-362)把该组合信号分离(320)。把视频信号和辅助信号解码(322-362)，用来产生增强的显示图像。

"Transmitting or storage system for color television with multiplex time division coding and data generator and receiver for it"

Monochrome-compatible color slow scan television system

Display signal converter

A display device includes a display panel including red, blue, green and white (RBGW) sub pixels, a signal conversion apparatus for converting an input signal having a first color format and color arrangement into a display signal having a second color format and color arrangement, a color conversion unit configured to convert the first color format into the second color format; a sub pixel position determining signal which determines a color arrangement of a sub pixel position of the display panel, and a sub pixel signal generation unit configured to generate a sub pixel signal having the second color format and color arrangement based on the sub pixel position determining signal.

Extended television system

In an extended television system, an additional signal is encoded in the horizontal blanking intervals of an extended television signal, thereby overlapping the color bursts to create more time or the additional signal. Any artifacts caused by the overlap of the color bursts and the additional signal are avoided or at least sufficiently mitigated by processing the additional signal so that it has spectral zeros at n times the color subcarrier frequency for n equals zero and for n equals one.

Method for transmitting multiplex signal

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Receiver for color television system

Saturation quantization in video coding

디지탈 텔레비젼 신호 전송장치

내용 없음

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Broadcast receiving apparatus

A digital broadcast receiving apparatus capable of executing a function with a higher added value is provided. A broadcast receiving apparatus configured to receive contents includes: a receiving unit configured to receive the contents; an interface via which the contents received by the receiving unit is outputted; a control unit configured to control an output state of the contents from the interface. In this case, the control unit is configured to determine the output state of the contents from the interface in accordance with a combination of control information indicating a copy control state of the contents, control information for specifying necessity or not of protection when to output the contents, information indicating resolution of video of the contents, and information indicating transmission characteristics of video of the contents, which are received by the receiving unit together with the contents.

映像信号送信装置、映像信号受信装置、および映像信号伝送システム

様々なシステム仕様への対応が可能な映像信号送信装置等に関する。当該装置は、パッカーユニット、エンコーダユニット、シリアライザを備える。パッカーユニットは、１またはそれ以上のピクセル分の映像信号から、ピクセル数および該映像信号を構成する色信号の階調ビット数に応じたサイズのパケット構成で複数のブロック信号を生成する。このとき、ピクセル数および階調ビット数に応じた幅のパルスを含む制御信号も生成される。エンコーダユニットは、ブロック信号に対して、パルスの有無で区別される制御信号の第１期間と第２期間とでエンコード効率が互いに異なるエンコード処理を行う。

映像信号送信装置、映像信号受信装置および映像信号伝送システム

Schaltung zur umwandlung von rgb-signalen in komponentensignale

Sistema di trasmissione o memorizzazione per televisione a colori con codificazione multiplexa divisione di tempo e generatore e ricevitore di dati per lo stesso.

Verfahren zum übertragen eines farbfernsehsignals.

Broadcast receiving apparatus

A digital broadcast receiving apparatus capable of executing a function with a higher added value is provided. A broadcast receiving apparatus configured to receive contents includes: a receiving unit configured to receive the contents; an interface via which the contents received by the receiving unit is outputted; a control unit configured to control an output state of the contents from the interface. In this case, the control unit is configured to determine the output state of the contents from the interface in accordance with a combination of control information indicating a copy control state of the contents, control information for specifying necessity or not of protection when to output the contents, information indicating resolution of video of the contents, and information indicating transmission characteristics of video of the contents, which are received by the receiving unit together with the contents.

Verfahren zum übertragen eines farbfernsehsignals.

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Video signal transmission device, video signal reception device and video signal transferring system

映像信号送信装置、映像信号受信装置および映像信号伝送システム

【課題】様々な要求仕様への対応が可能な映像信号送信装置などを提供する。 【解決手段】映像信号送信装置１０は、パッカーユニット１１、エンコーダユニット１２、シリアライザ１３を備える。パッカーユニット１１は、１または２以上のピクセル数の映像信号を構成する色信号およびシンク信号を受けて、ピクセル数および色信号の階調ビット数に応じたサイズを有するパケット構成で映像信号をパケット処理して複数のブロック信号を生成する。パッカーユニット１１は、ピクセル数および色信号の階調ビット数に応じたパルス幅を有するパルスを含む制御信号を生成する。エンコーダユニット１２は、パッカーユニット１１により生成されたブロック信号に対して、制御信号においてパルスが存在する第１期間と存在しない第２期間とで互いに異なるエンコード処理を行う。 【選択図】図２

Video signal transmission device, video signal reception device and video signal transferring system

Erweitertes fernsehsystem

Method And Apparatus For Conversion Of Dynamic Range Of Video Signals

A method and device for converting a video signal from a lower dynamic range source to produce a signal usable by target devices of a higher dynamic range comprises converting with a convertor that implements a process in which a received signal is received as a luminance component and separate colour components, A modified luminance component is then produced by applying an expansion function to the luminance component for luminance values above a threshold, applying a gamma function and then applying a scaling function. The modified luminance and separate colour components are then provided as an output signal for display on a target device of a higher dynamic range. The expansion of luminance ensures that the luminance range appropriately matches the range for a target display. By applying the expansion luminance values above a threshold, values below a threshold can be maintained with appropriate values for display.

一种传输彩色电视信号的方法

为了避免在不受图象干扰的情况下，采用时分复 用或频分复用传输彩色电视信号时的相位失真，在图 象产生时在帧消隐区不含图象信息的每一帧的至少 一行加入一个参考信号。在有关行的消隐区，参考信 号具有振幅连续上升的斜波型信号分量，其上选加一 具有色彩副载波频率和相位的正弦振荡。在录象室 和传输(台站)广播中，参考信号保持与相关帧的图象 信息不可分离的连接，直到在接收机一端进行再处 理。

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Method of encoding and decoding computer video signals for transmission over a twisted pair cable by jack gershfeld

A method of encoding and decoding computer video signals for transmission over a twisted pair cable is disclosed. Vertical and horizontal sync components of a video signal are converted into narrow vertical and horizontal sync components having the pulse width of 20 nanoseconds. Narrow vertical and horizontal sync components are then combined with red and green components. After transmission via a twisted pair cable, narrow vertical and horizontal sync components are extracted from red and green components and converted back into vertical and horizontal sync components. Even though the red and green components also comprise narrow sync signals, the narrow sync signals will not be detected by the detection circuits and presence of such narrow sync components in the red and green components will not interfere with the quality of the picture displayed on the display device.

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Arrangement for the transmission of digital television signals

In an arrangement for transmitting digital television signals from a plurality of signal sources to at least one signal sink, an interconnection of several video signal sources which are of a simple structure and simple to operate and can be used universally and reliably for different operating modes is enabled by a picture signal line group (7) for the transmission of luminance and color signals encoded as digital picture data from always one optional signal source of the signal sources (1, 2, 3, 4), a synchronizing signal line group (8) for the transmission of a picture data clock siganl and a line synchronizing signal from a clock signal source (45) and also an access-control (9) having for each signal source (1, 2, 3, 4) an access-control circuit (13, 23, 33, 43) which supplies an inhibit signal from a output (15, 25, 35, 45) when an inhibit signal is applied to an input (14, 24, 34, 44) or when a signal from the associated signal source (1, 2, 3, 4) is available there for transmission and which when an inhibit signal is present at its input (14, 24, 34, 44) inhibits the associated signal source (1, 2, 3, 4) for the supply of digital picture data in a predetermined temporal correlation with the picture data clock signal and enables it in like manner after the inhibiting signal has disappeared, all the access-control circuits (13, 23, 33, 43) having their inputs (14, 24, 34, 44) and their outputs (15, 25, 35, 45) incorporated in a chain circuit which determines the priority of the signal sources (1, 2, 3, 4) for the transmission.

Järjestely digitaalisten televisiosignaalien siirtämiseksi ja signaalilähde digitaalisten kuvasignaalien syöttämistä varten

Järjestely digitaalisten televisiosignaalien siirtämiseksi ja signaalilähde digitaalisten kuvasignaalien syöttämistä varten

Sistema para transmision y fuente de señales para emitir señales digitales de imagenes.

EN UN SISTEMA DE TRANSMISION Y FUENTE EMISORA DE SEÑALES DE IMAGEN DIGITALES SE REALIZA UNA CONEXION CONJUNTA DE DIVERSAS FUENTES DE SEÑALES, QUE SE MONTAN SENCILLAMENTE Y QUE SE PUEDEN UTILIZAR UNIVERSALMENTE PARA DIVERSOS SERVICIOS, CON UNA SEGURIDAD FUNCIONAL. ESTO SE HACE POSIBLE - POR MEDIO DE UN GRUPO DE CONDUCTORES DE SEÑALES DIGITALES (7) PARA TRANSMITIR, O POR UNA SALIDA Y ENTRADA DE SEÑALES SINCRONICAS (11,21,31 O 41) PARA EMITIR SEÑALES CODIFICADEAS DE COMO DATOS DE IMAGEN, DE UNA O VARIAS FUENTES DE SEÑALES SELECCIONABLES (1,2,3,4); - POR MEDIO DE UN GRUPO DE CONDUCTORES DE SINCRONIZACION (8) PARA TRANSMITIR, O DE UNA ENTRADA O SALIDA DE SINCRONIZACION (12,22,32, O 42) PARA EMITIR O RECIBIR UNA SEÑAL TACTIL DE DATOS DE IMAGEN Y UNA SEÑAL DE SINCRONIZACION LINEAL DE UNA FUENTE DE SEÑALES TACTILES 846) DEL GRUPO DE CONDUCCION SINCRONIZADORA (8); - ASI COMO UN CONTROL DEL ENLACE (9) CON CADA FUENTE DE SEÑALES, (1,2,3,4) Y UNA CONEXION PARA LA MISMA (13, 23, 33, 43) QUE EMITE ENUNA SALIDA (15,25,35,45) UNA SEÑAL DE BLOQUEO, CUANDO EN UNA SALIDA (14,24,34,44) SE CONDUCE UNA SEÑAL DE BLOQUEO EN LA FUENTE DE SEÑALES PERTINENTE (1,2,3,4) Y, AL APARECER UNA SEÑAL DE BLOQUEO EN SU ENTRADA (14,24,34,44), LA FUENTE DE SEÑALES PERTINENTE (1,2,3,4) PARA LA EMISION DE DATOS DE IMAGEN, SE BLOQUEA EN UNA CORRELACION PREDETERMINABLE, TEMPORAL, PROGRAMABLE Y TRAS LA SUPRESION DE LA SEÑAL DE BLOQUEO QUEDA LIBRE EN MEDIDA ANALOGA. EN LA COLOCACION CON VISTAS A LA TRANSMISION, TODAS LAS CONEXIONES DE CONTROL DE ACCESO (13,23,33,43) RELATIVAS A SUS ENTRADAS (14,24,34,44) Y SALIDAS (15,25,35,45) SE SITUAN EN UNA CONEXION EN CADENA QUE DETERMINA LA JERARQUIA DE LAS FUENTES DE SEÑALES (1,2,3,4) PARA LA TRANSMISION.

Anordnung zum uebertragen und signalquelle zum abgeben digitaler bildsignale.

Process for transmitting a colour television signal

In order to prevent phase errors in the transmission of a colour television signal in time and frequency multiplex without taking account of image interference, a reference signal is inserted during image generation in at least one line of each complete image which contains no image information in its image blanking region. In the image blanking region of the line concerned the reference signal has a sloping component continuously rising with the amplitude on which a sine-wave oscillation with the frequency and phase of the colour carrier is superimposed. Throughout studio processing and broadcasting at the transmitter to preparation at the receiver, the reference signal remains inseparably linked to the image information of the appropriate complete image.

Verfahren zur erzeugung eines farbfernsehnormsignals und bildaufnahmekette dafuer.

影像信號發送裝置、影像信號接收裝置、及影像信號傳送系統

關於能對應各種系統規格的影像信號發送裝置等。該裝置具備：封包器單元、編碼器單元、串行器。封包器單元從1或其以上的畫素份的影像信號中，以對應畫素數及構成該影像信號的色信號的灰階位元數的大小的封包構成，生成複數區塊信號。此時，也生成包含具有對應畫素數及灰階位元數的寬度的脈衝之控制信號。編碼器單元對於區塊信號，在以有無脈衝來區別的控制信號之第1期間及第2期間，進行編碼效率相互不同的編碼處理。

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Correction of high frequency components of brightness signal in color receiver

Schaltungsanordnung fuer die verarbeitung eines farbfernsehsignals

Verwerkingsschakeling voor chrominantie-televi- gnalen.

Emetteur de signal video