CN202334803U

CN202334803U - Digital television set-top box

Info

Publication number: CN202334803U
Application number: CN201120491198XU
Authority: CN
Inventors: 于泓博; 秦月; 陈男
Original assignee: Qiqihar University
Current assignee: Qiqihar University
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-07-11
Anticipated expiration: 2021-12-01

Abstract

The utility model mainly relates to a digital television set-top box. The digital television set-top box comprises a system control module, a video processing module, a network interface module, a human-machine interaction module, an extended interface module and a power supply, wherein the system control module comprises an embedded ARM (Automatic Route Management) processor, a flash module and a memory module; the embedded ARM processor is connected with the flash module and the memory module; and the system control module is respectively connected with the video processing module, the network interface module, the human-machine interaction module, the extended interface module and the power supply through the embedded ARM processor. According to the digital television set-top box disclosed by the utility model, due to the adoption of a DSP (Digital Signal Processor) and the embedded ARM processor, interaction services of digital contents between a television set and Internet can be realized; and the digital television set-top box can be used for receiving digital television programs and achieving novel multimedia functions based on subscribing and broadcasting and is suitable for popularization and application.

Description

DTV STB

Technical field:

The utility model relates generally to a kind of DTV STB, a kind of specifically conversion equipment that digital television signal is converted to analog signal.

Background technology:

Along with the development of China's DTV industry and actively pushing forward of the integration of three networks, DTV STB is accepted and use by numerous families as a kind of middle device that transmission signals is compiled, changes.DTV STB abbreviates " STB " usually as; It is a kind of conversion equipment that digital television signal is converted to analog signal; It can be to the reduction of decoding through the image of digitalization compressed and voice signal; Produce the video and the voice signal of simulation, and to spectators high-quality TV programme are provided, make the user needn't change the higher DTV of price and just can watch digital television program by enough common simulated televisions through television indicator and stereo set.

In the use of STB, satisfying on the basic audiovisual Demand Base, more and more users has proposed the more function demand to STB.People are increasing to the demand of amount of information, and this just needs the more and more hommization of human-computer interaction function of STB.And the operating system of STB all is to popular demand at present; Only have functions such as demultiplexing to digital television signal, video decode, audio decoder; So-called interactive application all also rests on the basis of local interaction basically, network function very a little less than, can't carry out the man-machine interactive operation of rich personalityization; Can not satisfy interaction experience and demand that people improve day by day, be unfavorable for the development of DTV industry.

Therefore, along with popularizing and the continuous increase of bandwidth of the Internet, can help to select in the users from networks personalized service, the DTV STB that perhaps carries out information interchange through network and TV just becomes development in future trend.

Summary of the invention:

Goal of the invention:

The utility model has proposed a kind of DTV STB to the variety of issue that exists in the above-mentioned prior art, has overcome the problems referred to above.

Technical scheme:

A kind of DTV STB is characterized in that: said STB is made up of system control module, video processing module, Network Interface Module, human-computer interaction module, expansion connection module and power supply; System control module comprises embedded ARM processor, flash memory module and memory modules, and embedded ARM processor connects flash memory module and memory modules; System control module connects video processing module, Network Interface Module respectively, goes into machine interactive module, expansion connection module and power supply through embedded ARM processor.

Be provided with dsp processor in the said video processing module, dsp processor is connected with embedded ARM processor through dual port RAM.

Said human-computer interaction module comprises the keyboard input module, shows output module and infrared interface module.

Said expansion connection module comprises USB interface and IC-card interface.

Advantage and effect:

The utility model provides a kind of DTV STB, have following advantage:

(1), adopt high performance digital signal processor DSP and embedded ARM processor chip as hardware platform, can realize various video, Audio Processing very easily.

(2), be provided with Network Interface Module, have good network compatibility.

(3), be provided with dual port RAM as shared drive between embedded ARM processor and the dsp processor, thus realize high-speed data exchange and real time communication.

Description of drawings:

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model structural representation.

Embodiment:

Below in conjunction with accompanying drawing the utility model is done further explanation:

The utility model provides a kind of DTV STB, shown in Fig. 1 and Fig. 2, it is characterized in that: said STB is made up of system control module, video processing module, Network Interface Module, human-computer interaction module, expansion connection module and power supply; System control module is responsible for the working condition of whole STB and to the dispatching management of resource, is comprised embedded ARM processor, flash memory module and memory modules, and embedded ARM processor connects flash memory module and memory modules; System control module connects video processing module, Network Interface Module, human-computer interaction module, expansion connection module and power supply respectively through embedded ARM processor.Power supply is the embedded ARM processor power supply.Flush bonding processor based on ARM9 is fit to the processing to control routine very much, like graphic interface and data-application etc.

Though embedded ARM processor has certain data processing capability, its function can not satisfy the high speed processing requirement of multi-medium data sometimes, need in the video processing module of decoding that is used for realizing video information and output function, design coprocessor.The utility model is provided with dsp processor as coprocessor in video processing module; For example: can adopt TI company to use and the high performance universal DSP TMS320DM642 chip of design to the multimedia field specially; It can provide definition with the WMV9 form efficiently is the high definition video stream of 720p; Also can provide H.263, video flowings such as MPEG-4, MPEG-2 and MPEG-1, for the video flowing of video compression standard of new generation this form of decoding that H.264 this DSP also can be smooth.

Dsp processor is connected with embedded ARM processor through dual port RAM.Dual port RAM is set between embedded ARM processor and dsp processor as the purpose of shared drive is; In processing procedure; Embedded ARM processor and dsp processor utilize the memory of self to carry out buffer memory respectively; Can also carry out read-write operation to dual port RAM simultaneously, thereby realize high-speed data exchange and real time communication, improve efficient greatly.

STB can connect the Internet the Internet through Network Interface Module.At present the higher embedded ARM processor ARM Cortex A9 processor of performance itself is integrated network interface, USB interfaces etc. are easy to realize the input and output of high-speed data, can satisfy the demand of home entertaining for high bandwidth and Media Stream fully.

Said human-computer interaction module comprises the keyboard input module, shows output module and infrared interface module.The user can use hand-held remote controller or infrared keyboard that STB is controlled.

Said expansion connection module comprises USB interface and IC-card interface.USB interface can be connected with movable storage devices such as USB flash disk or portable hard drives very easily, thereby realizes the video-information decoding and the output of localization; Also can connect accessories such as USB video telephone.The IC-card interface can insert the smart card of representative of consumer authority, as the paying authentication of charge program, authority that can realization condition receiving system leading subscriber with guarantee normally watching of user.

The utility model has made full use of existing internet facilities, for the user provides the interface between DTV and the broadband network, can realize the interactive service of digital content between television set and the Internet, can not increase cost basically.Except the receiving digital television program, can also be suitable for applying based on the novel multimedia service function of subscription and program request simultaneously.

Claims

1. DTV STB, it is characterized in that: said STB is made up of system control module, video processing module, Network Interface Module, human-computer interaction module, expansion connection module and power supply; System control module comprises embedded ARM processor, flash memory module and memory modules, and embedded ARM processor connects flash memory module and memory modules; System control module connects video processing module, Network Interface Module, human-computer interaction module, expansion connection module and power supply respectively through embedded ARM processor.

2. DTV STB according to claim 1 is characterized in that: be provided with dsp processor in the said video processing module, dsp processor is connected with embedded ARM processor through dual port RAM.

3. DTV STB according to claim 1 is characterized in that: said human-computer interaction module comprises the keyboard input module, shows output module and infrared interface module.

4. DTV STB according to claim 1 is characterized in that: said expansion connection module comprises USB interface and IC-card interface.