Method for acquiring electric contents

The invention relates to an acquisition method for electronic contents, which relates to a method for receiving the electronic contents. The acquisition method for the electronic contents of the invention comprises the following steps: an electronic content provider stores electronic content data in an electronic content publishing management system; customization information data is stored in terminal sales equipment or the electronic content publishing management system; the electronic content publishing management system transmits the electronic content data to the terminal equipment according to the customization information data of the terminal equipment; users perform selective buying according to the electronic content data of the terminal sales equipment and defray the expense; the users make the electronic contents received by user terminals through transmission channels. The invention makes the users be able to acquire required electronic contents in corresponding occasions as ...

Wireless digital TV encryption communication system based on mobile phone TV safety module and its working method

The system comprises frond end, transmission network and user end. The front end encrypts and packs the media content data requested by user; said media content data and the authorized authentication information are transmitted to the user end via transmission network; the user terminal receives the packed and encrypted media content data and the authorized authentication information and uses the authorized authentication information to decrypt and restore the original media content data; the restored media content data is played on the user end. The invention combines the SIM card with the smart card for conditionally receiving the media content data to realize the mobile communication while controlling the receiving of the TV program.

An information gateway and working method thereof

Compressed encoding method for stock information data

The invention discloses a compression coding method of stock information data which relates to a compression coding mode of information data. The compression coding method of stock information data comprises the processes as follows: price data and trading volume data in the stock information data are taken out by a processor; the price data is presented by adopting standard data and increment data of the price and the trading volume data is presented by adopting standard data and increment data of the trading volume; the coding of the standard data and the increment data adopts variable length. The invention can largely reduce the data volume which is convenient for storage and transmission.

Common local oscillator IQ imbalance coupling correction method and device

According to the common local oscillator IQ imbalance coupling correction method and device provided by the invention, variables are introduced through the change of a phase shifter to construct a binary primary evaluation coefficient equation set to decouple the coupling problem of TX mirror image/direct current and ORX mirror image/direct current, so that the problem of mirror image and LO leakage in a TDD large bandwidth scene can be solved on a digital side; rX or feedback mixer devices can be saved, the performance is stable, and the reliability is high. The method is mainly applied to the field of small base stations or MIMO macro base stations or enterprise-level WIFI.

Segmented polynomial digital pre-distortion device and method for operation precision control

The invention discloses a piecewise polynomial digital pre-distortion method for operation precision control, which comprises the following steps of: 1, determining the piecewise number M of a pre-distortion model, piecewise interval parameters and precision control parameters of each piecewise interval, setting the pre-distortion model according to the piecewise intervals of a baseband signal, and training to obtain model parameters; and step 2, receiving a baseband signal x (j) in real time, judging the segment interval in which the baseband signal x (j) is located, converting the signal into y (x (j)) according to the digital pre-distortion model of the corresponding segment interval, outputting the signal y (x (j)), sending the signal y (x (j)) to a signal amplifier through a digital-to-analog converter and a modulator, and completing amplification of a radio frequency signal by the signal amplifier. The invention relates to a piecewise polynomial digital pre-distortion device for operation ...

Method and device for enhancing digital pre-distortion stability

According to the method and the device for enhancing the digital pre-distortion stability, the random lock number indication is added, the starting point and ending point range of the random lock number is controlled to be larger than the logic processing time of an LMS calculation coefficient, and the starting point of the lock number is random each time, so that the equally-spaced sampling problem is solved, and the whole service data can be covered in a long time; all input data can be completely covered theoretically for a long time when the coefficient is trained by the LMS, and the problem of coefficient instability caused by an inevitable engineering implementation method is fundamentally solved. If the method is adopted in an actual product, the logic design difficulty can be greatly reduced, convenience is brought to large-scale normalized logic link development, and advantages are brought to ASIC chip area power consumption reduction.

Method and system for digital photo frame transmitting photo files based on WI_FI

The invention discloses a method and a system for photo file transmission based on WI_FI digital photo frames and relates to the digital photo frame field. Each digital photo frame has an account number and an email account number at a front-end server, the front-end server identifies the account number and the email account number according to the MAC address of a WI_FI net card of the digital photo frame, the photo inside the digital photo frame keeps synchronous with the photo under the account number of the front-end server; the photos of the server and the digital photo frame can synchronize immediately as long as the digital photo frame is accessed into the Internet in a WI_FI wireless LAN; and the email account numbers subordinate to the digital photo frames send photos to each other or send mails containing photos, the server can extract out the photos to automatically synchronize to the digital photo frames which the email account numbers belong to.

Digital television receiving set equipped with GPS omniselector

The invention relates to a digital television receiver with a GPS omniselector, in particular to a mobile receiver of a digital television, comprising a digital television receiving module (1), a terrestrial digital television aerial (5), a GPS information receiving module (3), a digital television and GPS information synthesis processing module (2) and a user operation display interface processing module (4), wherein, the digital television receiving module (1) receives and processes radio-frequency signals of the terrestrial digital television and outputs TS bit streams; the GPS information receiving module (3) is used for receiving GPS information data; the digital television and GPS information synthesis processing module (2) is used for analyzing and processing information data transmitted by the digital television receiving module (1) and the GPS information receiving module (3); the user operation display interface processing module (4) is used for providing synthesized data for ...

Method and device for improving digital pre-distortion performance stability

The invention provides a method and a device for improving digital pre-distortion performance stability, which are mainly applied to products with digital pre-distortion requirements and can optimize the performance of a digital pre-distortion model in a dynamic carrier scene. On the basis of an existing digital pre-distortion transfer function GMP model, a double alpha filtering optimization look-up table address is added, two stages of alpha filtering connected in series can enable a violently-changed signal to become smoother, the transient change characteristic of the signal is prolonged, the instantaneous large-energy charging and discharging effect of an analog device is avoided, optimization of the GMP model is achieved, and the simulation accuracy of the GMP model is improved. Therefore, the look-up tracking trend of the signal is improved, and the charging and discharging change form of the capacitor in the long-memory active power amplifier is fitted. The scheme has lower area ...

Method for realizing data dissemination and interaction by combining one-to-all broadcast with bilateral network

The invention provides a method for realizing data dissemination and interaction by combining the one-to-all broadcast with the bilateral network. The method comprises the following steps: 1) a unilateral network transmitting terminal obtains and collects information data, and packages and sends the information data; 2) an intelligent interaction information broadcasting platform receives an information data package sent by the unilateral network transmitting terminal, packet filtering, intelligent receiving and packet storage are carried out by UCL (upper control limit) definition, and the package supplementation is carried out by the bilateral network; 3) the intelligent interaction information broadcasting platform obtains the data request of a user terminal, and a data transmission link is established by accessing hotspot equipment to carry out data transmission between the intelligent interaction information broadcasting platform and the user terminal. According to the method for realizing ...

Acceleration peak value and obliquity sensor

Digital TV encryption and authorization system and method based on IP stream

A kind of digital TV encrypting authorization system and method which is based on IP flow relates to network of digital TV and data communication system, especially data encrypting system and method. The system includes encrypting front end, transmission network and receiving terminal. The encrypting front end generates authorization control table data, and program source is encrypted, encapsulated to IP data flow. The receiving terminal receives the program, analyzes corresponding program based on received authorization management information. The invention provides a kind of effective scheme; it fits for transmitting data in various types, but multiple points broadcast mode is more effective than point-to-point broadcast mode. For in aspect of encrypted broadcast and user addressing, the scheme is more effective than IPSec that key management and authorization. Mobile communication technique is fused as digital broadcast TV technique; the problem that two-way transmission can not be realized ...

Mutual information broadcast terminal system combined with one-way broadcast and two-way network

The invention provides a mutual information broadcast terminal system combined with a one-way broadcast and a two-way network. The mutual information broadcast terminal system comprises a general information release system used for capturing and transmitting information, a ground forwarding system and a mutual information broadcast terminal platform used for receiving the information which is forwarded by the ground forwarding system. The two-way network is used for being connected with an intelligent interaction terminal of the mutual information broadcast terminal platform. The mutual information broadcast terminal platform comprises a first data receiving module, a second data receiving module, a secret key list generating module, a secret key generating module, an encrypting module and a data forwarding module. The system is combined with existing media content through a new technology, the functions of content publishing, message displaying, information browsing, intelligent interaction ...

Parameter updating method of piecewise linear digital pre-distortion model and pre-distortion system

The invention discloses a parameter updating method for a piecewise linear digital pre-distortion model, which comprises the following steps of: acquiring a baseband signal, and initializing a piecewise interval and a piecewise interval parameter of the piecewise linear digital pre-distortion model based on the baseband signal and the characteristics of a power amplifier; based on the initialized and determined segmented intervals and segmented interval parameters, adopting an R2 parameter judgment method to judge whether the segmented intervals meet preset conditions or not, if yes, not performing interval splitting, otherwise, performing interval splitting on the segmented intervals until the split segmented intervals meet the preset conditions, and obtaining new segmented intervals; performing linear fitting on the new segmented interval to obtain a new segmented interval parameter; and, a pre-distortion system. The method has the advantages that the segmentation interval and the segmentation ...

Digital TV mobile receiving method and multi-functional PCMCIA card based on the MAN

Method for broadcasting real-time traffic information based on digital television channel

The invention relates to a method for broadcasting real-time traffic road condition information on the basis of a digital television channel, which relates to application of the digital television channel. The method of the invention comprises the following steps: an equipment hose exteriorly obtains traffic road condition data sources; the traffic road condition information is converted into data flows stated by broadcasting of the digital television channel after editing and format conversion, and sent to a transmitting front-end system of a terrestrial digital television; data is transmitted through a transmitting antenna of the front-end system; a terminal device receives the data from the terrestrial digital television channel and then analyzes the data; the traffic road condition information is restored and displayed on a terminal display device. The invention can solve deficiencies of the prior road condition broadcasting system and bring users with brand-new experience.

Wireless network-based clothing information publishing method and wireless network-based clothing information publishing system

The invention relates to a wireless network-based clothing information publishing method, which includes: (Step 1) clothing information is collected; (Step 2) the collected clothing information is processed and stored into a database module; (Step 3) the address codes and user information of various user terminals are acquired and stored into the database module; (Step 4) a cloud computing server is set and utilized to match and extract clothing information needed by a specified user terminal from the database module; (Step 5) according to the address code of the user terminal, the cloud computing server is utilized to select a corresponding wireless network to send the needed clothing information to the specified user terminal. The publishing method can satisfy the demand of different users on the individualization of clothing information and select different wireless networks to send clothing information according to different terminals as well and is applicable to point-to-area broadcast ...

Method and system for transmitting stock information through one-way digital TV network

The invention relates to a method for transmitting securities information by using an unidirectional network of a digital TV and a system thereof. The invention relates to a field of data communication of the securities information, in particular to data transmission of the securities information in a digital TV network. The method includes the processes: a front terminal recodes the received transaction data; then, private data is encapsulated and packed into a TS and after encapsulated, the TS is transmitted to a terminal through a network; after the terminal receives the data, decapsulation and decoding are carried out by the terminal for the received data and then the data is put into use. The system consists of the front terminal and the terminal; wherein the front terminal consists of a unit for encoding the securities information and a unit for transmitting the securities information and the terminal consists of a unit for receiving the securities information. In the invention, on ...

Multi-mode digital television receiving method and device

The invention relates to a multi-mode digital television receiving method and a device thereof. The invention relates to digital television receiving technology, in particular to technology for digital television terminals which receive a plurality of transmission modes. The method of the invention comprises the following steps: an intermediate concentrator is arranged between a fore signal receiving module and a rear processing module; the fore signal receiving module firstly sends data to the intermediate concentrator which processes and maps received data into data with consolidation form and then sends the data to the rear processing module. The invention makes a single digital television terminal be able to receive a plurality of transmitting system data, and is suitable for different digital television terminals.

Encryption and authorization method for DTV conditional receiving system

The invention relates to a method for encrypting and authorizing a conditional access system of a digital television, which relates to a method for authorizing the conditional access system, in particular to a method for authorizing the conditional access system of the digital television. In the method for encrypting and authorizing the conditional access system of the digital television, at least 2 users are distributed by a management server of the conditional access system to form a contract-signing group; each user is corresponding to a contract-signing key data; the contract-signing key data of the user in the contract-signing group forms a key group data; the key group data is the key data of the contract-signing group; the derived key data which is derived by the contract-signing key data is a contract-signing group derived key data; a route structure of the contract-signing group derived key data and the contract-signing key data of the user is a message tree structure. Based on ...

Method and device for enhancing gain stability of digital pre-distortion loop

The invention provides a method and a device for enhancing the gain stability of a digital pre-distortion loop, which can introduce a variable step size concept into a communication system at the minimum and simplest cost, introduce a dynamic convergence step size factor, solve the stability of the loop signal gain under different power fluctuations of the signal, and improve the stability of the loop signal gain. The stability of gain calculation and the stability of pre-distortion algorithm correction are improved. And the quality of a communication system channel is effectively improved. A finite depth variable step size convergence factor mu gear table is extracted through early-stage simulation analysis, a signal changing in real time serves as a gear lookup table address, and the theoretically optimal mu value is tracked and called when the signal changes so as to assist the stability of an LMS (Least Mean Square) algorithm. By applying the scheme, the implementation cost is extremely ...

Program scheduling method and system of multi-core system based on RISC-V

The invention relates to an IC (integrated circuit) chip design technology, discloses a program scheduling method based on a processor, and particularly relates to a program scheduling method and system of a multi-core system based on RISC-V. The method comprises the steps of obtaining a utilization rate of a thread corresponding to a main processor and a predicted utilization rate; determining a to-be-processed space required by the task; comparing the to-be-processed space with the threshold values of the utilization rate and the predicted utilization rate; distributing the task to a thread bound with the main processor or the coprocessor for operation based on a comparison result and a first rule; according to the program scheduling method of the multi-core system based on the RISC-V, scheduling and distribution of multi-program tasks are achieved, the continuity of task processes is achieved, and the problems that task interruption is caused, continuous execution cannot be guaranteed ...

Acceleration peak value and obliquity sensor

The acceleration peak value and obliquity sensor has one cylindrical casing, several spaced metal touching plates arranged on the inner wall of the casing, one conducting seat inside the casing, one conducting ball on one circular notch on the seat, and connecting electrodes between the seat and the metal touching plates. The sensor is used for remote controller with mouse function.