CN203015055U

CN203015055U - Digital television set top box with transcoding function

Info

Publication number: CN203015055U
Application number: CN 201220576948
Authority: CN
Inventors: 邹伟华; 杨雪松
Original assignee: Wellav Technologies Co ltd
Current assignee: Wellav Technologies Co ltd
Priority date: 2012-11-05
Filing date: 2012-11-05
Publication date: 2013-06-19
Anticipated expiration: 2022-11-05

Abstract

The utility model discloses a digital television set top box with a transcoding function. The set top box comprises a core control unit CPU, a video/audio decoding unit, a video/audio transcoding unit, a network interface, a control interface, a video/audio display interface, and a peripheral and expansion interface, wherein the core control unit CPU, the video/audio decoding unit and the video/audio transcoding unit are respectively connected with the network interface, the video/audio display interface and the peripheral and expansion interface, the core control unit CPU is connected with the control interface and the video/audio decoding unit, and the video/audio decoding unit is connected with the video/audio transcoding unit. According to the utility model, buffer and a video/audio processing unit of the digital television set top box are used to transcoding service requests of different video coding formats, different resolutions and different bit rates of users of other peer-to-peer networks or local area networks, so that the video contents can be transmitted with required format and resolution, and the network bandwidth can be saved.

Description

A kind of digital TV set-top box with the transcoding function

Technical field

The utility model relates to digital TV set-top box and P2P technology, specifically refers to a kind of digital TV set-top box that requires with satisfied reciprocity internet technique and the digital television techniques of transcoding function.

Background technology

P-2-P technology (peer-to-peer is called for short P2P) claims again reciprocity internet technique, is a kind of new network, relies on computing capability and the bandwidth of participant in network, rather than all is gathered on less several station servers relying on.P2P can make the user side (as computer or set-top box) on network can receive also can externally send streaming medium content.Broadcasting, program request (VOD) and push away broadcast (PushVOD) video frequency program in, can send video content by initiatively or automatically mutually transmitting between user side, thereby avoid all the elements all to send from one or a small amount of server and cause network blockage.The P2P technology is existing mature technology solution and application at present.

but, develop rapidly along with digital technology, depending on the past high Qinghua of audio area, interactive future development, cause looking the data volume (being initial data) that audio sources comprises increasing, give the transmission of digital video-audio signal, storage, broadcast has brought great technical barrier, the particularly development of network audio-video online technique, the video and audio material that the high user of requirement real-time Transmission in limited broadband range experiences, this just needs the video/audio can not be too large, this produces increasing mutual contradiction with the high Qinghua direction of video again, for solving these contradiction, must need new technology to satisfy the needs of present and following industry.

In order to promote the using value of broadband network, increase the service ability of existing network, also make simultaneously the broadband user experience more smooth, flexibly, the Extraordinary Video service, can the real-time transcoding transmission look the subject matter that audio content is present user's needs and operator's multi-screen business development.Video code conversion refers to the process of a certain video format conversion for another video format (comprising resolution, bit rate).Although do not understood by everybody, Video Transcoding Technology will be widely used.

The utility model content

The purpose of this utility model is to provide a kind of digital TV set-top box buffer memory and look audio treatment unit to other peer-to-peer network or LAN subscriber (set-top box of utilizing, PC, smart mobile phone, intelligent television) different video coded format, resolution and bit rate service request carried out transcoding and processed and reach the digital TV set-top box with the transcoding function that form and resolution on demand send video content, conserve network bandwidth.

to achieve these goals, the utility model is designed a kind of digital TV set-top box with the transcoding function, it comprises key control unit CPU, depending on audio decoding unit, depending on the audio conversion code element, network interface, control interface, depending on audio frequency play interface, peripheral hardware and expansion interface, key control unit CPU, depending on audio decoding unit, depending on the audio conversion code element respectively with network interface, depending on audio frequency play interface, peripheral hardware and expansion interface connect, key control unit CPU respectively with control interface be connected audio decoding unit and be connected, depending on audio decoding unit with look the audio conversion code element and be connected.

The utility model has following beneficial effect with the digital TV set-top box of transcoding function: beneficial effect is, experiences and reduced the network bandwidth in the situation that do not reduce the user, improved network service capabilities.Because service is under the management of operator, therefore network service can strengthen the tenability to different network terminals, and need not increase number of servers and the outlet bandwidth demand of service provider, simultaneously owing to sending optimal coded format and resolution for different network terminals, alleviate the decoding processing load of the terminals such as the weak smart mobile phone of partial decoding of h disposal ability, TV, strengthened user's experience.

Description of drawings:

Fig. 1 is that the utility model is with the functional-block diagram of the digital TV set-top box of transcoding function.

Embodiment

For the ease of those skilled in the art's understanding, below in conjunction with specific embodiment and accompanying drawing, structural principle of the present utility model is described in further detail.

As shown in Figure 1, a kind of digital TV set-top box with the transcoding function, comprise key control unit CPU, look audio decoding unit, look the audio conversion code element, network interface, control interface, look audio frequency play interface, peripheral hardware and expansion interface, key control unit CPU, look audio decoding unit, look the audio conversion code element respectively with network interface, look audio frequency play interface, peripheral hardware and expansion interface and be connected, key control unit CPU respectively with control interface be connected audio decoding unit and be connected, depending on audio decoding unit with look the audio conversion code element and be connected.Key control unit CPU is responsible for control, man-machine interaction and the management of system; Depending on audio decoding unit, be responsible for looking audio decoder (MPEG2, H.264 wait), after decoding, the output raw digital signal is given and is looked audio interface (AV, HDMI etc.) circuit and terminal; Depending on the audio conversion code element, under the control of key control unit, the raw digital signal of looking audio decoding unit decoding output, carry out the conversions such as resolution, then recompile is looked audio format and bit rate for what need.

The utility model is as follows with the course of work of the digital TV set-top box of transcoding function: realize on the basis in digital TV set-top box and P2P technology, by shown in Figure 1, depending on audio decoding unit under the control of key control unit CPU the descending MPEG-2 of network interface or H.264 wait standard look the audio compression signal, decompress(ion) is reduced to the Audio and Video raw digital signal respectively, and be converted to and look the required data format of audio frequency play interface, provide required connecting terminal signal by interface circuit for external display or television set; Simultaneously, the Audio and Video digital signal of decoding circuit output is sent to looks the audio conversion code element, the order that transcoding units is sent according to network interface or control interface by key control unit CPU, first the raw digital signal after decompress(ion) is converted to required resolution and form, again recompile be the encoding characteristics such as required frame structure, bit rate H.264, the moving picture standard coding formats such as rm, 3GP, then by network interface up.

H.264 the utility model increases in digital TV set-top-box system with the digital TV set-top box of transcoding function, rm, the moving picture standards such as 3GP look the audio conversion code element, when other peer-to-peer network user (set-top box, PC, smart mobile phone, when intelligent television) the video content services request being arranged, depending on the audio conversion code element namely under the instruction of Internet service provider's central server and management, coded format by other peer-to-peer networks user, the minimal bit rate bandwidth requirement that resolution and network allow, first video cache is decoded, then do conversion of resolution, be re-encoded as again form and the bit rate that needs and send to other peer node user.

Foregoing is only preferred embodiment of the present utility model, is not be used to limiting embodiment of the present utility model, and those skilled in the art are according to design of the present utility model, and the appropriate adaptation of having done or modification all should be within protection ranges of the present utility model.

Claims

1. digital TV set-top box with the transcoding function, it is characterized in that: comprise key control unit CPU, look audio decoding unit, look the audio conversion code element, network interface, control interface, look audio frequency play interface, peripheral hardware and expansion interface, key control unit CPU, look audio decoding unit, look the audio conversion code element respectively with network interface, look audio frequency play interface, peripheral hardware and expansion interface and be connected, key control unit CPU respectively with control interface be connected audio decoding unit and be connected, depending on audio decoding unit with look the audio conversion code element and be connected.