CN201733369U - Next generation broadcast network terminal access device control system - Google Patents

Abstract

The utility model relates to a next generation broadcast network terminal access device control system, which comprises a multimedia processor, and a JTAG debugging interface, double-rate synchronous dynamic random access memory, nonvolatile flash memory, an audio-video conversion module, an input module, a display module, an output interface, a power/clock module and an Ethernet physical interface transceiver which are connected with the multimedia processor. The JTAG debugging interface, the double-rate synchronous dynamic random access memory, the nonvolatile flash memory and the power/clock module are respectively connected with the Ethernet physical interface transceiver, and the audio-video conversion module, the input module, the display module and the output interface are respectively connected with the power/clock module. The next generation broadcast network terminal access device control system realizes a network playing function, simultaneously takes radio and television resource reuse and terminal price into consideration, and reduces resource waste.

Description

Radio and television network termination access device control system of future generation

Technical field

The utility model relates to the broadcasting and television network Chinese of future generation (NGB) based on the achievement of cable television digitalization and Mobile Multimedia Broadcasting (CMMB).Refer in particular to broadcasting and television network of future generation (NGB) terminal access device control system.

Background technology

China's broadcasting and television network of future generation (NGB) is the achievement based on cable television digitalization and Mobile Multimedia Broadcasting (CMMB), " high performance wideband information network " core technology with autonomous innovation is support, the television network broadcast of future generation suitable China's national situation of structure, " integration of three networks ", that wire and wireless combines, full process and full network.

The core transmission bandwidth of China's broadcasting and television network of future generation (NGB) will surpass per second 40 megabits above per second 1,000 gigabits, assurance each household access bandwidth, the "one-stop services" of " integration of three networks " such as high definition TV, digital video-audio program, high-speed data access and speeches can be provided, make television set become the most basic, information terminal the most easily, make broadband interactive digital information consumption spread all over huge numbers of families as basic consumption such as water, electricity, warm, gas.But NGB also has the network operation attribute of believable service guarantee and controlled pipe simultaneously, and its comprehensive technical performance index meets or exceeds international most advanced level, can satisfy the information service total demand that 20 years futures, each family " went out with regard to last expressway ".

If increase a business in terminal (set-top box just), and all very difficult just not saying integration of three networks business only is the value-added service that increases an individual event broadcasting, normally to change a set-top box, do not meet NGB running environment like this.The whole network of NGB must carry whole business---comprise the business of various all kinds of, various forms.If can't support such service operation environment in terminal, Here it is so, and we must improved place.

The critical component of required in the past terminal equipment.They mostly are to adopt the PC scheme to realize, its major defect is that cost is higher, volume is big, power consumption is bigger.

The product that has the Internet video playing function at present adopts the compatible decoding device more, and the solution that dedicated network is play is actually rare.And broadcasting and TV will rely on the cutter of the whole conversion of cable television network digitlization to wish to have the product that adapts with it.Be beneficial to popularizing of NGB (broadcasting and television network of future generation) project.

Given this, be necessary to provide CHINA RFTCOM Co Ltd terminal access device control system of future generation to address the above problem.

The utility model content

The technical problems to be solved in the utility model is to provide radio and television network termination access device control system of future generation, is used to realize the netcast function, takes into account the resource reuse of broadcasting and TV and the price of terminal, reduces the wasting of resources.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: radio and television network termination access device control system of future generation, this terminal access device control system comprises multimedia processor, the JTAG debugging interface that is connected with multimedia processor, Double Data Rate synchronous DRAM, non-volatile flash memory memory, audio frequency and video modular converter, input module, display module, output interface, power supply/clock module and Ethernet physical interface transceiver; Described JTAG debugging interface, Double Data Rate synchronous DRAM, non-volatile flash memory memory, power supply/clock module are connected with Ethernet physical interface transceiver respectively; Described audio frequency and video modular converter, input module, display module and output interface are connected with power supply/clock module respectively.

The utility model has adopted powerful dedicated video decoding chip, has used the embedded OS developing operation on hardware platform, and than the PC implementation, cost advantage is obvious, and volume is little, low in energy consumption, be typical energy-conserving and environment-protective product.

The utility model is on the master chip basis of DVB-C standard MPEG2 decoding, has developed a cover drive software, has realized the netcast function, takes into account the resource reuse of broadcasting and TV and the price of terminal, greatly reduces the wasting of resources.For the process that improves digital audio/video industrial chain correlation technique exploitation level, promotion " integration of three networks " plays positive progradation.

CHINA RFTCOM Co Ltd terminal access device control system of future generation is the concrete product of " integration of three networks " trend, technology content is than higher, and it has been embodied a concentrated reflection of multimedia, computer, digital compression coding, has added Descrambling Algorithms, enciphering and deciphering algorithm, numeric security, the communication technology and development of internet technology level.On structure, be divided into substantially: the network interface module; The transmission flow demultiplexing module; Audio/video decoding and system's control die set; Analog audio-video television signal coding module; The peripheral data interface module; AC/DC conversion module etc.This structure has fully satisfied the needs of NGB terminal use to network interaction communication, signal codec processing, condition reception and functions expanding.And the hardware of its core is divided into two parts.A part is a core with tuner and channel decoder and Ethernet, is mainly used in the signal specific of reception from the NGB network; Another part comprises microprocessor and video decoding chip, finishes the controlled function of the audio frequency and video digital signal decoding and the NGB receiving terminal each several part of compression.Provide favorable compatibility and extensibility from the design of software, can make product can support wired Cable, ground, direct broadcasting satellite network; Be supported in up-downgoing data on NGB or the telecommunications IP network, realize multimode compatibility truly.Transplant Mozil la browser and satisfied the full-service demand of the NGB and the integration of three networks.Increase characteristic JS expansion on this basis again, satisfied the customization demand of operator.For guaranteeing that product meets the terminal management demand of the full process and full network of NGB, exploitation has remote administration terminal software configurable, diagnosable, that can monitor.

Description of drawings

Fig. 1 is the utility model terminal access device control system structural representation.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Radio and television network termination access device control system of future generation, this terminal access device control system comprises multimedia processor, the JTAG debugging interface that is connected with multimedia processor, Double Data Rate synchronous DRAM, non-volatile flash memory memory, audio frequency and video modular converter, input module, display module, output interface, power supply/clock module and Ethernet physical interface transceiver; Described JTAG debugging interface, Double Data Rate synchronous DRAM, non-volatile flash memory memory, power supply/clock module are connected with Ethernet physical interface transceiver respectively; Described audio frequency and video modular converter, input module, display module and output interface are connected with power supply/clock module respectively.

Multimedia processor (Media Processor) is the SoC chip of a integrated QAM channel demodulation and MPEG-2 source coding function, and the IPTV system scheme and the outstanding complete machine solution of industry of high performance-price ratio is provided for the client.Support the audio decoder of MPEG-1, MPEG-2.The audio frequency PES that is finished MPEG-1, MPEG-2 by software is to the parsing of ES and the extraction of PTS, and the fault-tolerant processing of code stream.The audio decoder module is the PCM data with the audio ES data parsing under the control of CPU; Output module is delivered to Audio DAC by the I2S interface after supporting 2 road PCM data mixing, gives SPDIF passage simultaneously; Also can read in the AC3 data, utilize SPDIF passage bypass output by Third Road PCM passage.Realized that abundant 2D figure quickens function, comprised that image is moved, the rectangle color is filled, color space conversion and image format conversion, high-quality 2D convergent-divergent, the anti-flicker of self adaptation, Al pha Blending and ROP operation, chroma key operation and rectangle are cut out etc.Comprise CPU, the dominant frequency height; Integrated floating-point coprocessor; Support I/DCache and ITCM; Support JAVA to quicken, integrated 2D figure quickens function, for set-top box value-added service exploitation provides enough disposal abilities.

The JTAG debugging interface meets IEEE Std 1149.1 standards.This debugging interface is convenient to the exploitation of application software, operating system, can be used for the real-time tracking debugging of ARM subsystem.

Adopt DDR II SDRAM (Double Data Rate synchronous DRAM), its initialization procedure is finished automatically by hardware.Before starting initialization, only need to configure the related register of MDDRC according to conditions such as the model of device and clock frequencies, start configuration then and get final product.

Non-volatile flash memory memory (NOR Flash) is the AMBA slave that is connected on the ahb bus, be the interface control circuit that outside static memory is conducted interviews, mainly finish ahb bus the link of a plurality of FLASH equipment in outside and the sequential conversion of read-write operation.

KEYPAD GPIO is the programmable universal input/output interface, is used to generate and gather the signal that inputs or outputs of application-specific, and the communication between realization system and the peripheral hardware makes things convenient for the control of system to peripheral hardware.

IR infrared remote control receiving element receives infrared data by infrared interface, can support four kinds of data formats decodings of NECwithsimple repeat code, NEC with full repeat code, SONY and TC9012, and receive functions such as data error detection and infrared remote control wake up.

Led module is mainly realized two functions: first function is to finish LED to show control.Led module receives from CPU by the APB bus needs data presented, with serial mode data is sent to 74 family chips then, finishes the demonstration of LED at last by 74 family chips.Led module has the hardware refresh function simultaneously, significantly reduces the workload of CPU.Second function is to finish the scanning of 4%2 matrix keyboards.

CVBS Output video output display unit V0 realizes that BACKGROUND background colour, Video video, 2 road OSD images and CURSOR image co-registration show, support the pal mode display timing generator.

. support TSC-system formula display timing generator.

. support the mixing of OSD1 layer, OSD2 layer, Video layer, CURSOR layer, full frame background layer.

. support Video plane, OSD1 plane, OSD2 plan position approach to exchange.

. support the demonstration aspect to merge BORDER PROCESSING.

. support brightness, contrast and color saturation adjustment.

9.Audio module under the control of CPU, is decoded as the PCM data with the voice data of MPEG-1, MPEG-2, and delivers to Audio DAC by the I2S interface, and SPDIF is provided output channel simultaneously.

1). support the audio decoder of MPEG-1, MPEG-2

2). support the PCM pattern, support software is finished various mode decodings such as MP3, LPCM.

3). embedded Audio DAC.

4). support external Audio DAC, configurable I2S format digital interface is provided.

5). support the SPDIF digital audio interface.

6). support left and right acoustic channels selection and quiet, support monophony to change dual track and handle.

7). can cooperate software and Video module to finish audio-visual synchronization control.

8). support the audio mixing of binaural PCM to handle.

9). support the sound processing of being fade-in fade-out.

POWER uses 3 kinds of power supplys altogether:

1).1.2V

2).1.8V

3).3.3V

Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can other forms, structure, layout realize.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to disclosed embodiment.

Claims (2)

1. radio and television network termination access device control system of future generation, it is characterized in that: this terminal access device control system comprises multimedia processor, the JTAG debugging interface that is connected with multimedia processor, Double Data Rate synchronous DRAM, non-volatile flash memory memory, audio frequency and video modular converter, input module, display module, output interface, power supply/clock module and Ethernet physical interface transceiver; Described JTAG debugging interface, Double Data Rate synchronous DRAM, non-volatile flash memory memory, power supply/clock module are connected with Ethernet physical interface transceiver respectively; Described audio frequency and video modular converter, input module, display module and output interface are connected with power supply/clock module respectively.

2. radio and television network termination access device control system of future generation as claimed in claim 1, it is characterized in that: described output interface comprises infrared interface, is used to receive infrared data.