CN102340647A - Method for realizing mobile phone bidirectional video - Google Patents
Method for realizing mobile phone bidirectional video Download PDFInfo
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- CN102340647A CN102340647A CN2010102316335A CN201010231633A CN102340647A CN 102340647 A CN102340647 A CN 102340647A CN 2010102316335 A CN2010102316335 A CN 2010102316335A CN 201010231633 A CN201010231633 A CN 201010231633A CN 102340647 A CN102340647 A CN 102340647A
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Abstract
The invention discloses a method for realizing a mobile phone bidirectional video. Both a calling mobile phone and an incoming call mobile phone are provided with a camera. When the calling mobile phone requests the incoming call mobile phone to make video communication, video data obtained by the cameras is compressed based on a video coding algorithm of H.264 standards and then transmitted to the incoming call mobile phone through a GPRS (General Packet Radio Service) network, the incoming call mobile phone decodes the data after receiving the data to obtain video stream, and the video stream is displayed on a screen of the mobile phone. With the method, video communication service can be realized through the mobile phones, and the mobile phones can be in video communication with each other.
Description
Technical field
The present invention relates to a kind of mobile communication technology, particularly relate to a kind of implementation method of mobile phone two-way video.
Background technology
H.264 be the new digital video coding standard of joint video team (JVT:joint video team) exploitation of MPEG (moving picture expert group) of VCEG (video coding expert group) and the ISO/IEC of ITU-T (International Telecommunications Union's telecommunication standards group); It can transmit the video flowing based on networking protocol (IP) with lower data rate; The aspect such as lose at video quality, compression efficiency and data packet recovery; Surmount existing MPEG-2, MPEG-4 and video communication standard H.26x, be more suitable for narrow band transmission.
H.26x, the video compression series standard is mainly used in the video communication applications; For example; Based on ISDN (Integrated Services Digital Network; Integrated services digital network) video standard of the H.320 framework standard of network is for H.261, H.262 and H.263, based on lan network H.323 and based on PSTN (Public Switched Telephone Network, PSTN) network H.324 the video standard in the framework standard H.261 and H.263 for.Video compression series standard MPEGx is mainly used in video storage and plays in the application, and for example, the video compression standard among the VCD is MPEG-1, and the video compression standard among the DVD is MPEG-2.MPEG-4 and H.264 standard then can be widely used in the multiple field; The MPEG-4 standard obtains adopting in wireless video communication and Streaming Media application; Because H.264 the advantage that H.264 aspect compression performance, is had will be applied in fields such as real-time video communication, radio and television, video storage broadcast.
With former video compression standard H.261, H.263, MPEG-1, MPEG-2, MPEG-4 be similar, H.264 also be to adopt the hybrid coding method of inter prediction and frame inner conversion to eliminate or reduce the information redundancy in the image.
More so effective technical methods have been adopted just; H.264 just had unprecedented high compression efficiency; The code flow of under identical picture quality, being permitted is lower, under identical picture quality, H.264 required code check be about MPEG-2 36%, H.263 51%, MPEG-4 61%; And along with realizing that from now on optimizing sex work does better, the advantage of its compression performance aspect will be more outstanding.This high compression efficiency can be brought a lot of benefits to application such as real-time video communication, digital broadcast television, video storage, improves people's video and appreciates quality.What certainly, accompany with this high compression efficiency is the higher implementation complexity of needs H.264.Compare with MPEG-2, though compression performance H.264 is enhanced about more than once, computation complexity H.264 also will improve more than the twice.
Video compression international standard mainly contain by ITU-T formulate H.261, H.262, H.263, H.264 with by MPEG-1, MPEG-2, MPEG-4 that MPEG formulates, wherein H.262/MPEG-2 and H.264/MPEG-4AVC unite formulation by ITU-T and MPEG.
Owing to receive the restriction of limited bandwidth resources of wireless network and transmittability, end user's major part is to use the wireless network data service according to the mode that flow is paid in the market.Therefore, improving compression efficiency is the main target of wireless video and multimedia application.Therefore, H.264/AVC coding standard becomes the most competitive candidate's standard aspect MMS (Multimedia Message Service) (MMS), packet switch stream service (PSS) and conversation applications.Yet, video is transmitted under different environment, not only need high efficiency coding, the video through coding should seamlessly at an easy rate be integrated in the middle of the current and following procotol framework simultaneously.In addition, in conversation applications, to improve fault-tolerant support be important to video coding.
Summary of the invention
The technical problem that the present invention will solve is in order to overcome the defective of prior art, a kind of implementation method of mobile phone two-way video to be provided, and it can realize the mobile video session services, carries out video communication between the mobile phone each other.
The present invention solves above-mentioned technical problem through following technical proposals: a kind of implementation method of mobile phone two-way video; Caller mobile phone and called mobile phone all have camera, it is characterized in that, when caller handset call called mobile phone carries out video communication; Based on the video coding algorithm of standard H.264; To compress from the video data that camera obtains, be transferred to called mobile phone through GPRS network then, called mobile phone is decoded after receiving data; Obtain video flowing, on mobile phone screen, show.
Preferably, said mobile phone is a GSM type mobile phone.
Preferably, said called mobile phone is passed to the caller mobile phone with oneself after the video flowing encoding compression of camera acquisition, and the caller mobile phone receives the back decoding and shows, thus the realization two-way video.
Preferably, said caller mobile phone and called mobile phone pass short message and compressed voice data mutually.
Positive progressive effect of the present invention is: the present invention can realize the mobile video session services, carries out video communication between the mobile phone each other.
Description of drawings
Fig. 1 is the flow chart of the implementation method of mobile phone two-way video of the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
The present invention includes H.264 code decode algorithm and in the transmission of mobile wireless environment, its major technique characteristics comprise:
(1) 4 type of DCT (Discrete Cosine Transform, discrete cosine transform) integer transform and corresponding quantization method;
(2) 7 kinds of macroblock prediction patterns: 16 * 16,16 * 8,8 * 16,8 * 8,8 * 4,4 * 8,4 * 4, estimation is more accurate with compensation;
(3) multi-reference frame;
(4) infra-frame prediction;
(5) improved block elimination effect filter (Deblocking filter);
(6) the entropy coding method UVLC (Universal VLC, universal variable long codes), CAVLC (Context adaptive VLC, adaptive variable length sign indicating number) and the CABAC (adaptive binary arithmetic coding) that strengthen;
(7) 1/4 picture element interpolations;
(8) macro-block level line by line, interlacing adaptive coding MBAFF (frame field adaptive);
Mobile phone passes through GPRS (GPRS, General Packet Radio Service) thereby Network Transmission realizes the application of the two-way video chat of clear and smooth, and this mobile phone is GSM (Global System for Mobile Communications; Global system for mobile communications) type mobile phone, mobile phone has camera, and it comprises following steps: when caller handset call called mobile phone carries out video communication; Based on the video coding algorithm of standard H.264; To compress from the video data that camera obtains, be transferred to calledly then through GPRS network, decode after the called reception data; Obtain video flowing, on mobile phone screen, show.In like manner, pass to caller after the called video flowing encoding compression that obtains from camera with oneself, caller receives the back decoding and shows, thereby realizes two-way video.Simultaneously, both sides can pass short message and compressed voice data mutually.
Though more than described embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these execution modes.Therefore, protection scope of the present invention is limited appended claims.
Claims (4)
1. the implementation method of a mobile phone two-way video, caller mobile phone and called mobile phone all have camera, it is characterized in that; When caller handset call called mobile phone carries out video communication,, will compress from the video data that camera obtains based on the video coding algorithm of standard H.264; Be transferred to called mobile phone through GPRS network then; Called mobile phone is decoded after receiving data, obtains video flowing, on mobile phone screen, shows.
2. the implementation method of mobile phone two-way video as claimed in claim 1 is characterized in that, said mobile phone is a GSM type mobile phone.
3. the implementation method of mobile phone two-way video as claimed in claim 1 is characterized in that, said called mobile phone is passed to the caller mobile phone with oneself after the video flowing encoding compression of camera acquisition, and the caller mobile phone receives the back decoding and shows, thus the realization two-way video.
4. the implementation method of mobile phone two-way video as claimed in claim 1 is characterized in that, said caller mobile phone and called mobile phone pass short message and compressed voice data mutually.
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| CN2010102316335A CN102340647A (en) | 2010-07-20 | 2010-07-20 | Method for realizing mobile phone bidirectional video |
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| CN2010102316335A CN102340647A (en) | 2010-07-20 | 2010-07-20 | Method for realizing mobile phone bidirectional video |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200966069Y (en) * | 2006-11-07 | 2007-10-24 | 深圳市宝尼视讯科技有限公司 | A digital family intelligent gateway |
| CN101287090A (en) * | 2007-04-10 | 2008-10-15 | 上海基信通讯技术有限公司 | Video signal transmission method in un-authorized mobile access network |
| US20080291262A1 (en) * | 2007-05-21 | 2008-11-27 | Samsung Electronics Co., Ltd. | Visual communication method and appratus |
| US20080291261A1 (en) * | 2007-05-25 | 2008-11-27 | Samsung Electronics Co., Ltd. | Mobile terminal and video transmission method thereof |
| CN201274484Y (en) * | 2008-07-23 | 2009-07-15 | 瑞迅（厦门）数码科技有限公司 | Digital control system for residual district |
| CN201509237U (en) * | 2009-05-07 | 2010-06-16 | 钟明 | Speech conversation ordering terminal set for ordering system |
| CN201523434U (en) * | 2009-10-26 | 2010-07-07 | 陆如枫 | Floor switch |
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2010
- 2010-07-20 CN CN2010102316335A patent/CN102340647A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200966069Y (en) * | 2006-11-07 | 2007-10-24 | 深圳市宝尼视讯科技有限公司 | A digital family intelligent gateway |
| CN101287090A (en) * | 2007-04-10 | 2008-10-15 | 上海基信通讯技术有限公司 | Video signal transmission method in un-authorized mobile access network |
| US20080291262A1 (en) * | 2007-05-21 | 2008-11-27 | Samsung Electronics Co., Ltd. | Visual communication method and appratus |
| US20080291261A1 (en) * | 2007-05-25 | 2008-11-27 | Samsung Electronics Co., Ltd. | Mobile terminal and video transmission method thereof |
| CN201274484Y (en) * | 2008-07-23 | 2009-07-15 | 瑞迅（厦门）数码科技有限公司 | Digital control system for residual district |
| CN201509237U (en) * | 2009-05-07 | 2010-06-16 | 钟明 | Speech conversation ordering terminal set for ordering system |
| CN201523434U (en) * | 2009-10-26 | 2010-07-07 | 陆如枫 | Floor switch |
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Application publication date: 20120201 |