CN102780879A - 3G (third generation) video telephone - Google Patents
3G (third generation) video telephone Download PDFInfo
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- CN102780879A CN102780879A CN2011101234258A CN201110123425A CN102780879A CN 102780879 A CN102780879 A CN 102780879A CN 2011101234258 A CN2011101234258 A CN 2011101234258A CN 201110123425 A CN201110123425 A CN 201110123425A CN 102780879 A CN102780879 A CN 102780879A
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Abstract
The invention relates to a 3G (third generation) video telephone, which comprises a signal pattern processing module and a central control module, the central control module is provided with an audio/video/image data stream processor and an application data processor, and the audio/video/image data stream processor is provided with a transport stream processor, a video/image decoder, a video/image encoder, an audio decoder and an audio encoder; a decoded video buffer unit is connected with the transport stream processor sequentially through the video/image decoder and a compressed video/image buffer unit, and a raw video/image buffer unit is connected with the transport stream processor sequentially through the video/image encoder and an encoded video/image buffer unit; a decoded audio buffer unit is connected with the transport stream processor sequentially through the audio decoder and a compressed audio buffer unit, and a raw audio buffer unit is connected with the transport stream processor sequentially through the audio encoder and an encoded audio buffer unit. The 3G video telephone can effectively adjust the data stream link of each step of encoding and decoding and guarantee the smoothness of encoding, decoding and image transmission.
Description
Technical field
The present invention relates to 3G radio communication and video/voice field of wireless transmission, specifically be meant a kind of 3G visual fixed telephone.
Background technology
Country greatly develops the 3G industry at present, and 3G network first phase website starts 3G (Third Generation) Moblie (3G) in 10 cities.
At present the 3G technology standard comprises: three kinds of TD-SCDMA, WCDMA, CDMA2000.
WCDMA (Wideband CDMA) is the Wideband-CDMA technology, based on the 3G technology standard that the GSM net develops out, is the wideband CDMA technology that Europe proposes.
The wideband CDMA technology that CDMA2000 is come by narrowband CDMA (CDMA IS95) technical development is that QualCom North American Corp. takes proposition as the leading factor, and CHINAUNICOM is adopting this scheme to the 3G transition at present, and has built up CDMA IS95 network.
TD-SCDMA (Time Division-Synchronous CDMA); This standard is the 3G standard of being formulated alone by the China's Mainland; Since in domestic huge market; This standard receives the attention of each big main telecommunication apparatus manufacturer, and instrument factory commercial city over half, the whole world announces to support the TD-SCDMA standard.
Country greatly develops the 3G industry; It is commercial with examination that 3G network first phase website has started 3G (Third Generation) Moblie (3G) " Chinese Industrial Standards (CIS) " TD-SCDMA socialization operational trials in 10 cities at present, and indicate that the commercial applications of China's 3G (Third Generation) Moblie (3G) standard TD is formally set sail: WCDMA/CDMA2000 also progressively gets into commercial stage.
Along with the fast development of 3G technology with popularize, the 3G visual fixed telephone has also obtained fast development.In the evolution of 3G visual fixed telephone; Its core is the transmission and the encoding and decoding technique of audio/video/image; The data flow of how to regulate effectively between each link of encoding and decoding is connected; Feasible being encoded/decoded data is in whole coding/decoding process; Neither can can't mate because of level after too fast causing of prime link processing and cause loss of data or accumulation, also can not handle the phenomenon that causes back grade wait prime slowly because of the prime link, this is to realize the smooth transmission of 3G visual fixed telephone audio/video/image, the key of exporting.
Especially when the circuit transmission of low bandwidth network speed and bigger shake, if encoding and decoding and image transmission can not meet the demands, serious interrupted and blooming will appear in image.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art; A kind of 3G visual fixed telephone is provided; This 3G visual fixed telephone is regulated the data flow link between each link effectively in audio/video/image coding and decoding process, guaranteed the fluency of encoding and decoding and image transmission.
The objective of the invention is to realize: a kind of 3G visual fixed telephone through following technical scheme; Comprise and be used to carry out audio/video/picture signal and application data identified signal mode treatment module, radio-frequency module, modulation module, conversation module, central control module, audio frequency I/O unit and video I/O unit; Wherein, The signal mode processing module is simultaneously with the 3G signal transceiver, be connected based on the telephone wire of PSTN, and radio-frequency module, modulation, conversation module are situated between respectively and are connected between signal mode processing module and the central control module;
Said central control module is provided with audio/video/view data stream handle and is used for the application data processor that application data is handled; Wherein, said audio/video/view data stream handle is provided with and is used for audio/video/image data stream is separated transport stream processor, video decoder, video/image coding device, audio decoder and audio coder with combined treatment;
Said video I/O unit successively through decoded video/image buffer storage unit, video decoder, compressed video/image buffer storage unit link to each other with transport stream processor, said video I/O unit successively through original video/image buffer storage unit, video/image coding device, encoded video/image buffer storage unit link to each other with transport stream processor;
Said audio frequency I/O unit links to each other with transport stream processor through decoded audio buffer unit, audio decoder, compressed audio buffer unit successively, and said audio frequency I/O unit links to each other with transport stream processor through original audio buffer unit, audio coder, coded audio buffer unit successively.
Preferably; Said decoded video/image buffer storage unit, compressed video/image buffer storage unit, original video/image buffer storage unit, encoded video/image buffer storage unit, decoded audio buffer unit, compressed audio buffer unit, original audio buffer unit and coded audio buffer unit all adopt the FIFO high-speed memory, so that the coordination of audio/video data and clock synchronization.
Preferably, in said transport stream processor, be provided with the filter element of the different audio/videos of automatic adaptation/graphics standard data flow.
Preferably, in said transport stream processor, also be provided with the descrambling Conditional Access Module that the enciphered data in audio/video/image data stream is deciphered.
Said application data processor is mainly accomplished the relevant control of protocol stack, application software and the system of 3G.
Preferably, said video decoder, audio decoder all adopt H.264 decoding algorithm.
Said video/image coding device, audio coder all adopt H.264 encryption algorithm.
The present invention compares that prior art has the following advantages and beneficial effect:
The present invention is in whole coding/decoding process; In audio/video/image coding and decoding process, regulate the data flow link between each link effectively; Guaranteed the fluency of encoding and decoding and image transmission, flowing of data keeps the stable of speed and flow basically, makes whole encoding-decoding efficiency by performance effectively; The cost of codec is also relatively low, and the cost performance of decoder is more excellent than prior art.
Description of drawings
Fig. 1 is the overall structure figure of 3G visual fixed telephone;
Fig. 2 is the structure chart of audio/video/view data stream handle.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but execution mode of the present invention is not limited thereto.
Embodiment
A kind of 3G visual fixed telephone; As shown in Figure 1; Comprise and be used to carry out audio/video/picture signal and application data identified signal mode treatment module, radio-frequency module, modulation module, conversation module, central control module, audio frequency I/O unit and video I/O unit; Wherein, The signal mode processing module is simultaneously with the TD signal transceiver, be connected based on the telephone wire of PSTN, and radio-frequency module, modulation, conversation module are situated between respectively and are connected between signal mode processing module and the central control module; Audio frequency I/O unit comprises microphone and loud speaker, and video I/O unit comprises LCD.
Described signal mode processing module realizes by following workflow:
1) judge input signal, if telephone signal then gets into the phone tupe, 3G gets into busy condition;
2) judge whether to initiate video, the words that are are sent signal into modulator-demodulator; Otherwise get into common call mode;
3) in the step 1) if not telephone signal; Then get into 3G and move tupe; Telephone wire gets into busy condition; Judge that once more signal is audio/video/picture signal or application data, if audio/video/picture signal is then sent signal into transport stream processor, if application data is then sent signal into the application data processor.
Said central control module is provided with audio/video/view data stream handle and is used for the application data processor that application data is handled; As shown in Figure 2; Wherein, said audio/video/view data stream handle is provided with and is used for audio/video/image data stream is separated transport stream processor, video decoder, video/image coding device, audio decoder and audio coder with combined treatment;
Said video I/O unit successively through decoded video/image buffer storage unit, video decoder, compressed video/image buffer storage unit link to each other with transport stream processor, said video I/O unit successively through original video/image buffer storage unit, video/image coding device, encoded video/image buffer storage unit link to each other with transport stream processor;
Said audio frequency I/O unit links to each other with transport stream processor through decoded audio buffer unit, audio decoder, compressed audio buffer unit successively, and said audio frequency I/O unit links to each other with transport stream processor through original audio buffer unit, audio coder, coded audio buffer unit successively.
Said decoded video/image buffer storage unit, compressed video/image buffer storage unit, original video/image buffer storage unit, encoded video/image buffer storage unit, decoded audio buffer unit, compressed audio buffer unit, original audio buffer unit and coded audio buffer unit all adopt the FIFO high-speed memory, so that the coordination of audio/video data and clock synchronization.
In said transport stream processor, be provided with the filter element of the different audio/videos of automatic adaptation/graphics standard data flow.In said transport stream processor, also be provided with the descrambling Conditional Access Module that the enciphered data in audio/video/image data stream is deciphered.
Said application data processor is mainly accomplished the relevant control of protocol stack, application software and the system of 3G.
Said video decoder, audio decoder all adopt H.264 decoding algorithm.Said video/image coding device, audio coder all adopt H.264 encryption algorithm.
The foregoing description is a preferred implementation of the present invention; But execution mode of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. 3G visual fixed telephone; It is characterized in that: comprise being used to carry out audio/video/picture signal and application data identified signal mode treatment module, radio-frequency module, modulation module, conversation module, central control module, audio frequency I/O unit and video I/O unit; Wherein, The signal mode processing module is simultaneously with the 3G signal transceiver, be connected based on the telephone wire of PSTN, and radio-frequency module, modulation, conversation module are situated between respectively and are connected between signal mode processing module and the central control module;
Said central control module is provided with audio/video/view data stream handle and is used for the application data processor that application data is handled; Wherein, said audio/video/view data stream handle is provided with and is used for audio/video/image data stream is separated transport stream processor, video decoder, video/image coding device, audio decoder and audio coder with combined treatment;
Said video I/O unit successively through decoded video/image buffer storage unit, video decoder, compressed video/image buffer storage unit link to each other with transport stream processor, said video I/O unit also successively through original video/image buffer storage unit, video/image coding device, encoded video/image buffer storage unit link to each other with transport stream processor;
Said audio frequency I/O unit links to each other with transport stream processor through decoded audio buffer unit, audio decoder, compressed audio buffer unit successively, and said audio frequency I/O unit also links to each other with transport stream processor through original audio buffer unit, audio coder, coded audio buffer unit successively.
2. 3G visual fixed telephone according to claim 1; It is characterized in that: said decoded video/image buffer storage unit, compressed video/image buffer storage unit, original video/image buffer storage unit, encoded video/image buffer storage unit, decoded audio buffer unit, compressed audio buffer unit, original audio buffer unit and coded audio buffer unit all adopt the FIFO high-speed memory, so that the coordination of audio/video/view data and clock synchronization.
3. 3G visual fixed telephone according to claim 1 is characterized in that: the filter element that in said transport stream processor, is provided with the different audio/videos of automatic adaptation/graphics standard data flow.
4. 3G visual fixed telephone according to claim 3 is characterized in that: in said transport stream processor, also be provided with the descrambling Conditional Access Module that the enciphered data in audio/video/image data stream is deciphered.
5. 3G visual fixed telephone according to claim 3 is characterized in that: said application data processor is mainly accomplished the relevant control of protocol stack, application software and the system of 3G.
6. 3G visual fixed telephone according to claim 3 is characterized in that: said video decoder, audio decoder all adopt H.264 decoding algorithm.
7. 3G visual fixed telephone according to claim 5 is characterized in that: said video/image coding device, audio coder all adopt H.264 encryption algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123425.8A CN102780879B (en) | 2011-05-13 | 2011-05-13 | 3G (third generation) video telephone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110123425.8A CN102780879B (en) | 2011-05-13 | 2011-05-13 | 3G (third generation) video telephone |
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| CN102780879A true CN102780879A (en) | 2012-11-14 |
| CN102780879B CN102780879B (en) | 2014-12-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521789A (en) * | 2009-03-20 | 2009-09-02 | 中兴通讯股份有限公司 | Video telephone, system and method for realizing word message sending function during video communication. |
| CN101695120A (en) * | 2009-10-27 | 2010-04-14 | 中兴通讯股份有限公司 | Method and system for conducting video recording notification |
| WO2010139211A1 (en) * | 2009-06-04 | 2010-12-09 | 中兴通讯股份有限公司 | Video telephone, method for dialing and answering video telephone and device thereof |
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2011
- 2011-05-13 CN CN201110123425.8A patent/CN102780879B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521789A (en) * | 2009-03-20 | 2009-09-02 | 中兴通讯股份有限公司 | Video telephone, system and method for realizing word message sending function during video communication. |
| WO2010139211A1 (en) * | 2009-06-04 | 2010-12-09 | 中兴通讯股份有限公司 | Video telephone, method for dialing and answering video telephone and device thereof |
| CN101695120A (en) * | 2009-10-27 | 2010-04-14 | 中兴通讯股份有限公司 | Method and system for conducting video recording notification |
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| CN102780879B (en) | 2014-12-17 |
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