CN1223190C - Double-vision transmission system for television conference terminal - Google Patents
Double-vision transmission system for television conference terminal Download PDFInfo
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- CN1223190C CN1223190C CN 02106057 CN02106057A CN1223190C CN 1223190 C CN1223190 C CN 1223190C CN 02106057 CN02106057 CN 02106057 CN 02106057 A CN02106057 A CN 02106057A CN 1223190 C CN1223190 C CN 1223190C
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- 208000003164 Diplopia Diseases 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 title claims abstract description 10
- 208000029444 double vision Diseases 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 10
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- 238000001914 filtration Methods 0.000 description 2
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Abstract
The present invention relates to a double-vision transmission system for a television conference terminal. The double-vision transmission system comprises a multi-path video controller, a controller and an encoder, wherein the multi-path video controller is connected among all paths of video sources and the encoder and processes all paths of video images; the controller controls the image processing of the multi-path video controller; the encoder encodes images processed by the multi-path video controller. After the multi-path video controller is added, the images which are transmitted to the encoder so as to be encoded can be both a certain path of local video and the combination of two paths of video; two paths of images can be local video collected by two video cameras or local mobile video and computer VGA output, and the two paths of images can be also a path local video and a path of decoded output remote video.
Description
Technical field
The present invention relates to transfer of data, specifically, relate to a kind of double-vision transmission system of video conference terminal.
Background technology
Along with the fast development of network technology and electronic technology, TV conference system has obtained application more and more widely, and in TV conference system, the effect of video conference terminal is the terminal that the image in this meeting-place is sent to a distant place.The operation principle of most video conference terminals as shown in Figure 1 at present, at first gather the signal of one tunnel video source in terminal, then will deliver to encoder after this signal filtering, it is encoded into H263 with encoder or the H261 code stream is delivered to far-end, after the terminal of far-end is received this code stream, through decoder decode, deliver in the display device at last and show.As seen from Figure 1, if some terminals have n road input, what send far-end simultaneously to can only be wherein a certain road, just this demand for remote teaching etc. can't well satisfy.
Summary of the invention
After the purpose of this invention is to provide a kind of 2 road videos and making up to input terminal again coding transmit far-end, thereby realize simultaneously local terminal two-path video, local terminal video and far-end video being sent to the double vision transmission system of the video conference terminal of far-end.
For achieving the above object, the double-vision transmission system of a kind of video conference terminal of the present invention comprises encoder and N road video source, also comprises:
Be connected with the multi-channel video controller of handling each road video image between described N road video source and encoder, described multi-channel video controller comprises:
Selector is selected 2 road videos according to the control information that controller sends from the video of n road;
Video combine makes up 2 road videos of being sent here by selector according to the control information that controller sends, and it comprises two cutters, an image forming device, wherein:
One cutter is used for image A is cut into 1/2 of CIF or 4CIF image;
Another cutter is used for image B is cut into 1/2 of CIF or 4CIF image;
Image forming device, with the image A after the cutting and image B forms up and down or about image format;
Be connected to the controller of multi-channel video controller, be used for sending control information to the multi-channel video controller.
Described multi-channel video controller also comprises:
Selector is selected 1 road video according to the control information that controller sends from the video of n road;
1 road video that filter, filter selector are sent here.
System of the present invention also comprises the local terminal display device that is connected on the multi-channel video controller.
The present invention is after having increased a multi-channel video controller, make that the image of delivering to encoder encodes both can be an a certain road local video, it also can be the combination of two-path video, this two-path video both can be the local video of being adopted into by two video cameras, perhaps local terminal motion video and computer VGA (Video Graphics Array) output also can be one road local video and one tunnel far-end video through decoding output.
Description of drawings
Fig. 1 is the fundamental diagram of prior art;
Fig. 2 is a fundamental diagram of the present invention;
Fig. 3 is the schematic diagram of multi-channel video controller of the present invention;
Fig. 4 is first kind of compound mode figure of 2 road videos among the present invention;
Fig. 5 is second kind of compound mode figure of 2 road videos among the present invention;
Fig. 6 is the third compound mode figure of 2 road videos among the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.As shown in Figure 2, compare with prior art shown in Figure 1, the present invention has increased a multi-channel video controller between each road video source and encoder, make that each road video no longer is directly to deliver in the encoder to encode, but at first be sent in the multi-channel video controller, after the processing of multi-channel video controller, deliver in the encoder again and encode.It is encoded into H263 with encoder or the H261 code stream is delivered to far-end, after the terminal of far-end is received this code stream, through decoder decode, delivers in the display device at last and shows.
Fig. 3 is the fundamental diagram of multi-channel video controller, and the part in the frame of broken lines is the multi-channel video controller.As shown in Figure 3, receive the n road video of input when the multi-channel video controller after, from the video source of N road, select one the road or two-path video according to the control information of controller by selector.If select one road video, then this road video directly is fed to encoder after filtering, in addition, when selecting one road video, also can realize alternately transmitting of several roads video by the selection that changes video source.If selection two-path video, multi-channel video controller are sent to encoder after then two-path video being combined into a two field picture.Need to prove, in the video of N road which or any two-path video selected be by the control information decision of controller; The compound mode of two-path video also is by the control information of controller decision.
Fig. 4 and Fig. 5 have illustrated the dual mode of two-path video combination, and the mode that Fig. 4 describes is used for realizing that big picture inlays the anabolic process of a little picture, and we are called key frame with big picture, and little picture is called sprite.Hypothesis will be combined into boss's picture (CIF size) (CIF: output common intermediate form) with input picture A and B now, wherein key frame is the content of image A, sprite is the content of image B, key frame is the CIF size, the size of sprite is 1/9 or 1/4 of a key frame, and combination step is as follows:
Image A is filtered into the image A 1 of CIF size by filter;
Image B is filtered into the image B 1 of 1/9CIF or 1/4 CIF size by filter;
On image forming device, copy image B 1 to image A 1 and form image C;
Image C is outputed to encoder.
Wherein, in this kind compound mode, the position of sprite can be in the arbitrary position in the middle of the upper left corner, the upper right corner, the lower left corner, the lower right corner or the key frame of key frame, and in addition, the size of sprite can be 1/9 or 1/16 of a key frame.The possible combined result of two-path video is listed in Fig. 4.
The compound mode that Fig. 5 describes be used to realize two-path video combination up and down or about combination.Hypothesis will be combined into combination image (CIF size) output up and down with input picture A and B now, and wherein the first half is the content of image A, and the latter half is the content of image B, and step is as follows:
Cutter cuts into 1/2 of CIF or 4CIF with image A;
Cutter cuts into 1/2 of CIF or 4CIF with image B;
The latter half of image B is copied to the latter half formation image C of image A;
C is outputed to encoder.
Use this kind compound mode can realize two-path video combination up and down and about the combination.Possible combined result is listed in Fig. 5.
The compound mode that Fig. 6 describes is used to realize that the nothing of two-path video covers combination, and this kind compound mode especially is fit to remote teaching.Hypothesis will be combined into nothing covering combination image (CIF size) output with input picture A and B now, and its medium and small image is the content of image A, and big image is the content of image B.Big image is 4/9CIF size (or 9/16CIF size), and little picture is 1/9CIF (or 1/16CIF size), and step is as follows:
Filter is filtered into the image of 1/9CIF size or 1/16CIF size with image A, and filtered image is called A1;
Filter is filtered into the image of 4/9CIF size or 9/16CIF size with image B, and filtered image is called B1;
Copying image A 1 and B1 to a frame new frame deposits and forms image C;
C is outputed to encoder.
Use this kind compound mode can realize that the nothing of two-path video covers combination.Possible combined result is listed in Fig. 6.
Claims (3)
1. the double-vision transmission system of a video conference terminal comprises encoder and N road video source, it is characterized in that also comprising:
Be connected with the multi-channel video controller of handling each road video image between described N road video source and encoder, described multi-channel video controller comprises:
Selector is selected 2 road videos according to the control information that controller sends from the video of n road;
Video combine makes up 2 road videos of being sent here by selector according to the control information that controller sends, and it comprises two cutters, an image forming device, wherein:
One cutter is used for image A is cut into 1/2 of CIF or 4CIF image;
Another cutter is used for image B is cut into 1/2 of CIF or 4CIF image;
Image forming device, with the image A after the cutting and image B forms up and down or about image format;
Be connected to the controller of multi-channel video controller, be used for sending control information to the multi-channel video controller.
2. by the double-vision transmission system of the described video conference terminal of claim 1, it is characterized in that described multi-channel video controller also comprises:
Selector is selected 1 road video according to the control information that controller sends from the video of n road;
1 road video that filter, filter selector are sent here.
3. by the double-vision transmission system of claim 1 or 2 described video conference terminals, it is characterized in that also comprising the local terminal display device that is connected on the multi-channel video controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02106057 CN1223190C (en) | 2002-04-09 | 2002-04-09 | Double-vision transmission system for television conference terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02106057 CN1223190C (en) | 2002-04-09 | 2002-04-09 | Double-vision transmission system for television conference terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1450807A CN1450807A (en) | 2003-10-22 |
| CN1223190C true CN1223190C (en) | 2005-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02106057 Expired - Lifetime CN1223190C (en) | 2002-04-09 | 2002-04-09 | Double-vision transmission system for television conference terminal |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388782C (en) * | 2003-11-12 | 2008-05-14 | 华为技术有限公司 | Stationary graphic and text realizing method |
| JP4228010B2 (en) * | 2006-09-29 | 2009-02-25 | Ｎｅｃエンジニアリング株式会社 | Video conferencing equipment |
| CN101370114B (en) * | 2008-09-28 | 2011-02-02 | 华为终端有限公司 | Video and audio processing method, multi-point control unit and video conference system |
| CN107332846A (en) * | 2017-07-04 | 2017-11-07 | 武汉斗鱼网络科技有限公司 | Video broadcasting method and system |
| CN114245129A (en) * | 2022-02-22 | 2022-03-25 | 湖北芯擎科技有限公司 | Image processing method, image processing device, computer equipment and storage medium |
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- 2002-04-09 CN CN 02106057 patent/CN1223190C/en not_active Expired - Lifetime
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| CN1450807A (en) | 2003-10-22 |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518057 HUAWEI road user service center building, Shenzhen science and Technology Park, Guangdong Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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Granted publication date: 20051012 |
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