CN101990082B - Method and device for implementing video telephone - Google Patents
Method and device for implementing video telephone Download PDFInfo
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- CN101990082B CN101990082B CN201010531189.9A CN201010531189A CN101990082B CN 101990082 B CN101990082 B CN 101990082B CN 201010531189 A CN201010531189 A CN 201010531189A CN 101990082 B CN101990082 B CN 101990082B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
Abstract
The invention provides a method and a device for implementing a video telephone. The method comprises the following steps that: a transmitting end judges whether a data frame to be transmitted is a background noise frame, and further judges whether a predetermined tag frame has been generated currently if the data frame is the background noise frame; and when the tag frame has been generated currently, the transmitting end transmits the tag frame to an opposite end. In the method and the device for implementing the video telephone, the resource for sending the background noise frame when the transmitting end is in a silent mode is dynamically used for transmitting the image data and tag frame in the process of video telephone service according to the condition whether the transmitting end is in the silent mode or not, and a receiving end stimulates to obtain the background noise frame of the transmitting end, so the aim of expanding the image data transmission bandwidth in the video telephone service is fulfilled and the mosaic phenomenon of the image in the video telephone service is effectively avoided; and simultaneously, the method and the device are easy to implement and have strong applicability.
Description
Technical field
The present invention relates to mobile communication technology field, relate in particular to a kind of method and device of realizing video telephone.
Background technology
At present, mobile communication has welcome 3G (Third Generation) Moblie technology (3rd-generation, the 3G) epoch, with Generation Mobile Telecommunication System technology (second generation, 2G) epoch are compared, and the real application of 3G is the real-time service providing under bandwidth.As: video telephone, multimedia real-time game, remote wireless monitoring etc., wherein, video telephone is one of most widely used business of 3G.
In the agreement of 3GPP, H.261 the Video coding of video telephone can adopt, a kind of H.263, H.264, in MPEG-4; Audio coding adopts adaptive multi-rate (Adaptive Multi-Rate, AMR), Advanced Audio Coding (Advanced Audio Coding, AAC), high pass Code Excited Linear Prediction (QualcommCode Excited Linear Predictive, QCELP), enhanced variable rate encoding and decoding (EnhancedVariable Rate Codec, EVRC) etc.Because be limited to network condition, video telephone conventionally will busy channel bandwidth try one's best little in, guarantee the quality of compressed images and voice.
At present, the subject matter that video telephone exists is the inadequate clear and smooth of image, after being mainly manifested in mobile terminal object being moved in mobile or scene, video telephone image content there will be mosaic phenomenon in various degree, the scene under high-speed mobile particularly, the Ma Saike of image is even more serious.And for the problem of above-mentioned video telephone image, the solution of current employing has:
1, improve the performance of coding and decoding video algorithm, from MPG-4 to H.264, although the performance of coding and decoding video is highly improved, but under the given prerequisite of the network equipment, limited by improving the fluency effect of performance boost video telephone picture of coding and decoding video algorithm, and coding and decoding video algorithm uses mainly with the form of standard, therefore implement comparatively complicated.
2, improving the transmission performance of network flow-medium, for mobile terminal, for the bandwidth of video telephone, limits, therefore by increasing image transmitting bandwidth, promote video quality, is not too easily realization.
3, promote the quality of the front image of coding, by improving the performance of image output device, the obscurity boundary phenomenon of original output image is improved, thereby makes the reduced complexity of Video coding, raise the efficiency.It is not extensive that the limitation of this improvement mode shows as adaptability, and for the image output device of different performance, the performance of improvement has larger difference.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and device of realizing video telephone, can improve the mosaic phenomenon of image in video telephone.
For achieving the above object, technical scheme of the present invention is achieved in that
Realize a method for video telephone, described method comprises: whether the Frame that transmitting terminal judgement will send is background noise frames; If during background noise frames, further judge currently whether produced the marker frames of predetermining, if produced described marker frames, send described marker frames to opposite end.
Further, described method also comprises: if current, do not produce marker frames, described background noise frames is sent to opposite end, produce marker frames simultaneously.
Further, the described marker frames of described transmission is to after opposite end, and the method also comprises: whether the Frame that receiving terminal judgement receives is marker frames, if during marker frames, according to the background noise frames of the background noise frames simulation transmitting terminal having received.
Further, described method also comprises: when the Frame receiving is image data frame, judge whether Satisfying Matching Conditions, if meet, using the background noise frames of described simulation as background noise frames corresponding to described image data frame.
Further, described in, judge whether that Satisfying Matching Conditions is: when the Frame receiving is image data frame, the value of the variable setting in advance is set to true; Whether the value that judges described variable is true, is if so, Satisfying Matching Conditions;
Correspondingly, described using the background noise frames of described simulation after background noise frames corresponding to described image data frame, the method also comprises: the value of variable is set to false.
Further, described marker frames comprises: frame type position, frame quality indicator bit, pattern indicating bit, mode request position, data check position and marker frames content part; Wherein, the length of described frame type position is 4bit, and value is a kind of in 12,13 or 14; The length of described frame quality indicator bit is 1 bit, and value is 1; The length of described pattern indicating bit and described mode request position is 3bit, and value is 12; The length of described data check position is 8bit; Described marker frames content part is defined as " Noise_flag ".
Realize a device for video telephone, described device also comprises: frame type judge module, marker frames control module; Wherein,
Frame type judge module, for judging whether the Frame that will send is background noise frames, if during background noise frames, sends trigger message to marker frames control module;
Marker frames control module, for receiving after the trigger message of described frame type judge module transmission, judges the current predefined marker frames that whether produced, and if so, sends described marker frames to opposite end.
Further, described device also comprises background noise control module; Wherein, marker frames control module also, for while not producing marker frames, sending trigger message to background noise control module when current, produces marker frames simultaneously; Background noise control module, for receiving after the trigger message of described marker frames control module, sends to opposite end by described background noise frames.
Further, described device also comprises: background noise analog module; Wherein, frame type judge module is also for judging whether the Frame receiving is marker frames, if so, sends trigger message to background noise analog module; Background noise analog module, for receiving after the trigger message of described frame type judge module, according to the background noise frames of the background noise frames simulation transmitting terminal having received.
Further, described device also comprises background noise and images match module; Wherein, the notice that frame type judge module produces while also receiving image data frame for basis, produces and sends image data frame trigger message; Background noise and images match module, for when receiving the image data frame trigger message of frame type judge module transmission, judge current whether Satisfying Matching Conditions, if meet, the background noise frames described background noise analog module being obtained is as background noise frames corresponding to image data frame.
Further, described background noise and images match module when receiving image data frame trigger message, are set to true by the value of the variable setting in advance; Whether the value that then judges described variable is true, is if so, Satisfying Matching Conditions; And using after the background noise frames of the described simulation background noise frames corresponding as described image data frame, the value of variable is set to false.
Method and the device of realizing video telephone provided by the invention, by in visual telephone service process, according to transmitting terminal whether in silent mode, the resource that dynamically transmitting terminal is sent to background noise frames when the silent mode is for sending view data and marker frames, receiving terminal simulation obtains the background noise frames of transmitting terminal, with this, reach the object of image data transmission bandwidth in expansion visual telephone service, effectively solved the mosaic phenomenon of image in visual telephone service, realization is simultaneously simple, applicability is strong.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of realizing the method for video telephone of the present invention;
Fig. 2 is the structural representation of the marker frames in the method that realizes video telephone of the present invention;
Fig. 3 is the schematic flow sheet of the reception embodiment of the method that realizes video telephone of the present invention;
Fig. 4 is the composition structural representation of realizing the device of video telephone of the present invention;
Fig. 5 is that Fig. 4 shown device is built in the composition structural representation that carries out visual telephone service in mobile terminal.
Embodiment
Basic thought of the present invention is: whether the Frame that transmitting terminal judgement will send is background noise frames, if during background noise frames, further judges the current marker frames of predetermining that whether produced; When current, produce described marker frames, sent described marker frames to opposite end.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 shows the flow process that realizes the method for video telephone of the present invention, and as shown in Figure 1, described method comprises the steps:
Step 101, transmitting terminal judges whether the audio data frame that audio processing modules will send is background noise frames, if not, performs step 1Q2, if so, performs step 103;
In this step, specifically can carry out by the frame type position in audio data frame the judgement of voice data frame type, according to 3GPP regulation, when frame type position is 8, this audio data frame is background noise frames, and now the residing pattern of the video telephone of transmitting terminal is silent mode.
Step 102, when the audio data frame that will send when audio processing modules is normal speech data frame, sends according to normal speech data frame transmission flow, such as: by wireless channel, directly send etc.;
Step 103, further whether judgement has now produced the marker frames of predetermining, and if not, performs step 104, if so, performs step 105;
In this step, the structure of described marker frames can be with reference to figure 2, and the structure of marker frames is:
1, frame type position (Frame Type): the length that takies 4 bits, according to the regulation of 3GPP, audio data frame 12～14 is reserved frame, and the frame type position that therefore can define marker frames is a kind of in 12,13,14, in the embodiment of the present invention, the frame type position that defines this marker frames is 12.
2, frame quality indicator bit (Frame Quality Indicator): take the length of 1 bit, be defined as 1 in the embodiment of the present invention, according to the regulation of 3GPP, be Good frame.
3, pattern indicating bit (Mode Indication): take the length of 3 bits, for distinguishing existing definition, this pattern indicating bit is defined as 12.
4, mode request position (Mode Request): take the length of 3 bits, for distinguishing existing definition, this mode request position is defined as 12.
5, data check position (Codec CRC): the length that takies 8 bits.
6, marker frames content part (Frame content): define this content frame for " Noise_flag ", correspond to corresponding binary system.
Step 104, sends current background noise frames to opposite end, and produces marker frames, and current handling process finishes;
Step 105, the marker frames that transmission has produced is to opposite end, and current handling process finishes.
Fig. 3 shows the flow process of reception embodiment that the present invention realizes the method for video telephone, and as shown in Figure 3, described reception embodiment comprises:
Step 201, whether the Frame that receiving terminal judgement receives is marker frames, if not, performs step 202, if so, performs step 203;
In this step, whether the frame type of the marker frames of predetermining by judgement is for being 12, and the Frame if so, receiving is marker frames, if not the Frame receiving is not marker frames.
Step 202, processes the Frame receiving according to normal Frame handling process, and current handling process finishes.
Step 203, according to the background noise frames receiving before, the background noise frames of simulation transmitting terminal;
Whether step 204, receive image data frame, if so, produces notice to perform step 205, otherwise, execution step 202;
Step 205 step 207, judges whether Satisfying Matching Conditions, if meet, using the background noise frames of above-mentioned simulation as background noise frames corresponding to the image data frame receiving;
Particularly, step 205, for when receiving image data frame, is set to true by the value of variable flag, and flag is the variable setting in advance; Whether the value that step 206 is judgment variable flag is true, is if so, Satisfying Matching Conditions, perform step 207, otherwise current handling process finishes; Background noise frames corresponding to image data frame that step 207 receives in step 204 for the background noise frames that simulation in step 203 is obtained.
Step 208, is set to false by the value of variable flag, returns to step 201.
Fig. 4 shows the composition structure that the present invention realizes the device of video telephone, and as shown in Figure 4, described device comprises: frame type judge module 10 and marker frames control module 20; Wherein, frame type judge module 10 is for judging whether the Frame that will send is background noise frames, if during background noise frames, sends trigger message to marker frames control module 20; Marker frames control module 20, for receiving after the trigger message of described frame type judge module 10 transmissions, judges the current predefined marker frames that whether produced, and if so, sends described marker frames to opposite end.
Further, described device also comprises background noise control module 30; Wherein, marker frames control module 20 also, for while not producing marker frames, sending trigger message to background noise control module 30 when current, produces marker frames simultaneously; Background noise control module 30, for receiving after the trigger message of described marker frames control module 20, sends to opposite end by described background noise frames.
Further, described device also comprises background noise analog module 40; Wherein, frame type judge module 10 is also for judging whether the Frame receiving is marker frames, if so, sends trigger message to background noise analog module 40; Background noise analog module 40 is for receiving after the trigger message of described frame type judge module 10, according to the background noise frames of the background noise frames simulation transmitting terminal receiving.
Further, described device also comprises background noise and images match module 50; Wherein, the notice that frame type judge module 10 produces while also receiving image data frame for basis, produces and sends image data frame trigger message; Background noise and images match module 50, for when receiving the image data frame trigger message of frame type judge module 10 transmissions, judge current whether Satisfying Matching Conditions, if meet, the background noise frames described background noise analog module 40 being obtained is as background noise frames corresponding to image data frame.
Further, described background noise and images match module 50 when receiving image data frame trigger message, are set to true by the value of the variable setting in advance, and whether the value of the variable that then judgement sets in advance is true, if so, be Satisfying Matching Conditions; And using after the background noise frames of the described simulation background noise frames corresponding as described image data frame, the value of described variable is set to fa1se.
Below in conjunction with Fig. 5, by a specific embodiment, the course of work of said apparatus is described in detail further.
Fig. 5 shows said apparatus is built in to the composition structural representation of carrying out visual telephone service in mobile terminal, with reference to figure 5, and the transmitting terminal that mobile terminal one is visual telephone service; The receiving terminal that mobile terminal two is visual telephone service; Wherein audio processing modules, video encoding module, RTP/RTCP Real-time Transport Control Protocol functional module (RTP/RTCP functional module) are the existing functional module of mobile terminal.
Process of transmitting:
Mobile terminal one starts transmission flow: video encoding module 104 completes after image compression encoding, movement compensating algorithm processing, sends to RTP/RTCP functional module 103 to process the image data frame after processing;
Audio processing modules 101 completes voice signal is converted to audio data frame, and whether detect mobile terminal one in silent mode, if so, send background noise frames to the device 102 of realizing video telephone, if not, sending normal audio data frame processes to RTP/RTCP functional module 103;
102 pairs of Frames that receive of device of realizing video telephone judge, when receive when the background noise frames, further judge whether to have produced the marker frames of predetermining, if do not have, send background noise frames to mobile terminal two, produce marker frames simultaneously; If produced marker frames, send marker frames to mobile terminal two; The device of realizing video telephone 102 that is positioned at transmitting terminal comprises frame type judge module, marker frames control module and background noise control module;
RTP/RTCP functional module 103 is responsible for the Frame packing receiving to process, and sends to mobile terminal two.
Receiving course:
Mobile terminal two starts reception flow process: RTP/RTCP functional module 203 is responsible for the packet receiving to unpack, if image data frame sends to image data frame video encoding module 204 notice to realize the device 202 of video telephone; If audio data frame, sends to audio data frame the device 202 of realizing video telephone;
Video encoding module 204 completes to be processed the decoding of image data frame, and converts image to displayable picture format;
202 pairs of audio data frames that receive of device of realizing video telephone judge, when it is normal audio data frame or background noise frames, send to audio processing modules 201 to process normal audio data frame or background noise frames; When it is marker frames, according to the background noise frames of the background noise frames simulating mobile terminal one having received, and when receiving the notice of RTP/RTCP functional module 203, produce image data frame trigger message, triggering judges whether to meet the matching condition of background noise and image, if meet, the background noise frames of simulation is sent to audio processing modules 201, particularly, can be by the variable setting in advance, as flag, when receiving the notice of RTP/RTCP functional module 203, the device 202 of realizing video telephone is set to true by the value of flag; Then whether the value of judgment variable flag is true, is if so, Satisfying Matching Conditions; The background noise frames of simulation is sent to after audio processing modules 201, the value of flag variable is set to false; The device of realizing video telephone 202 that is positioned at receiving terminal comprises frame type judge module, background noise analog module and background noise and images match module;
Audio processing modules 201, carries out the conversion of voice signal by the background noise frames receiving and normal audio data frame.
Should be appreciated that in above-described embodiment, mobile terminal two equally also can be initiated the calling of visual telephone service to mobile terminal one, its detailed process is same as described above, does not repeat them here.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. a method that realizes video telephone, is characterized in that, described method comprises:
Whether the Frame that transmitting terminal will send by the frame type position judgement in Frame is background noise frames;
If during background noise frames, further judge currently whether produced the marker frames of predetermining, if produced described marker frames, send described marker frames to opposite end;
Whether the Frame that receiving terminal judgement receives is marker frames, if during marker frames, according to the background noise frames of the background noise frames simulation transmitting terminal having received;
When the Frame receiving is image data frame, judge whether to meet the matching condition of background noise and image, if meet, using the background noise frames of described simulation as background noise frames corresponding to described image data frame.
2. method according to claim 1, is characterized in that, described method also comprises: if current, do not produce marker frames, described background noise frames is sent to opposite end, produce marker frames simultaneously.
3. method according to claim 1, is characterized in that, described in judge whether that Satisfying Matching Conditions is:
When the Frame receiving is image data frame, the value of the variable setting in advance is set to true;
Whether the value that judges described variable is true, is if so, Satisfying Matching Conditions;
Correspondingly, described using the background noise frames of described simulation after background noise frames corresponding to described image data frame, the method also comprises: the value of variable is set to false.
4. according to the method described in claims 1 to 3 any one, it is characterized in that, described marker frames comprises: frame type position, frame quality indicator bit, pattern indicating bit, mode request position, data check position and marker frames content part;
Wherein, the length of described frame type position is 4bit, and value is a kind of in 12,13 or 14; The length of described frame quality indicator bit is 1bit, and value is 1; The length of described pattern indicating bit and described mode request position is 3bit, and value is 12; The length of described data check position is 8bit; Described marker frames content part is defined as " Noise_flag ".
5. a device of realizing video telephone, is characterized in that, described device also comprises: frame type judge module, marker frames control module, background noise analog module and background noise and images match module; Wherein,
Frame type judge module, whether the Frame that will send for the frame type position judgement by Frame is background noise frames, if during background noise frames, sends trigger message to marker frames control module; And for judging whether the Frame receiving is marker frames, if so, sends trigger message to background noise analog module; The notice producing while also receiving image data frame for basis, produces and sends image data frame trigger message;
Marker frames control module, for receiving after the trigger message of described frame type judge module transmission, judges the current predefined marker frames that whether produced, and if so, sends described marker frames to opposite end;
Background noise analog module, for receiving after the trigger message of described frame type judge module, according to the background noise frames of the background noise frames simulation transmitting terminal having received;
Background noise and images match module, for when receiving the image data frame trigger message of frame type judge module transmission, judge the current matching condition that whether meets background noise and image, if meet, the background noise frames described background noise analog module being obtained is as background noise frames corresponding to image data frame.
6. device according to claim 5, is characterized in that, described device also comprises background noise control module; Wherein,
Marker frames control module also, for while not producing marker frames, sending trigger message to background noise control module when current, produces marker frames simultaneously;
Background noise control module, for receiving after the trigger message of described marker frames control module, sends to opposite end by described background noise frames.
7. device according to claim 5, is characterized in that, described background noise and images match module when receiving image data frame trigger message, are set to true by the value of the variable setting in advance; Whether the value that then judges described variable is true, is if so, Satisfying Matching Conditions; And using after the background noise frames of the described simulation background noise frames corresponding as described image data frame, the value of variable is set to false.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010531189.9A CN101990082B (en) | 2010-11-03 | 2010-11-03 | Method and device for implementing video telephone |
| PCT/CN2011/073686 WO2012058913A1 (en) | 2010-11-03 | 2011-05-05 | Method and device for implementing videophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010531189.9A CN101990082B (en) | 2010-11-03 | 2010-11-03 | Method and device for implementing video telephone |
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| CN101990082A CN101990082A (en) | 2011-03-23 |
| CN101990082B true CN101990082B (en) | 2014-07-16 |
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| CN201010531189.9A Expired - Fee Related CN101990082B (en) | 2010-11-03 | 2010-11-03 | Method and device for implementing video telephone |
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| WO (1) | WO2012058913A1 (en) |
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| CN101990082B (en) * | 2010-11-03 | 2014-07-16 | 中兴通讯股份有限公司 | Method and device for implementing video telephone |
| CN105450969B (en) * | 2014-06-16 | 2019-01-15 | 联想(北京)有限公司 | A kind of real time video data transmission method and electronic equipment |
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| CN1917473A (en) * | 2006-07-27 | 2007-02-21 | 华为技术有限公司 | Transmission method and system for packet data in communication network |
| CN101237299A (en) * | 2007-12-27 | 2008-08-06 | 华为技术有限公司 | Voice service processing module, system and method |
| CN101394586A (en) * | 2007-09-20 | 2009-03-25 | 华为技术有限公司 | Uplink system resource sharing method, apparatus and system |
| CN101431578A (en) * | 2008-10-30 | 2009-05-13 | 南京大学 | Information concealing method based on G.723.1 silence detection technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI100932B (en) * | 1995-04-12 | 1998-03-13 | Nokia Telecommunications Oy | Transmission of audio frequency signals in a radiotelephone system |
| CN1284319C (en) * | 2002-04-22 | 2006-11-08 | 西安大唐电信有限公司 | Implement method of multi-channel AMR vocoder and its equipment |
| CN101087319B (en) * | 2006-06-05 | 2012-01-04 | 华为技术有限公司 | A method and device for sending and receiving background noise and silence compression system |
| CN101990082B (en) * | 2010-11-03 | 2014-07-16 | 中兴通讯股份有限公司 | Method and device for implementing video telephone |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917473A (en) * | 2006-07-27 | 2007-02-21 | 华为技术有限公司 | Transmission method and system for packet data in communication network |
| CN101394586A (en) * | 2007-09-20 | 2009-03-25 | 华为技术有限公司 | Uplink system resource sharing method, apparatus and system |
| CN101237299A (en) * | 2007-12-27 | 2008-08-06 | 华为技术有限公司 | Voice service processing module, system and method |
| CN101431578A (en) * | 2008-10-30 | 2009-05-13 | 南京大学 | Information concealing method based on G.723.1 silence detection technology |
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| WO2012058913A1 (en) | 2012-05-10 |
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