WO2004015994A1 - Procede et appareil de transfert d'un plan de bureau d'un ordinateur personnel a un terminal de communication video - Google Patents
Procede et appareil de transfert d'un plan de bureau d'un ordinateur personnel a un terminal de communication video Download PDFInfo
- Publication number
- WO2004015994A1 WO2004015994A1 PCT/CN2003/000627 CN0300627W WO2004015994A1 WO 2004015994 A1 WO2004015994 A1 WO 2004015994A1 CN 0300627 W CN0300627 W CN 0300627W WO 2004015994 A1 WO2004015994 A1 WO 2004015994A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- desktop
- terminal
- code stream
- information
- video terminal
- Prior art date
Links
Classifications
-
- 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
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
Definitions
- the invention belongs to the field of videoconferencing, and in particular relates to a method and a device for transmitting a PC desktop to a videoconferencing terminal. Background of the invention
- the first solution is to use a projector to project the desktop information of the PC onto the wall, and then use the camera of the conference TV terminal to project the content on the wall.
- the ingestion terminal is processed and transmitted to the remote end of the video.
- the second solution is to first convert the desktop information of the PC into a standard PAL (Pliase Alternating Line: PAL) using a VGA (Video Graphic Array) converter. Line phase inversion) / NTSC (Nation Television Systems Committee: National Television System Committee) standard signal; then the converted signal is input as a video input source to the conference television terminal; finally the conference television terminal processes the video and Send to the far end of the video.
- PAL Phase Alternating Line
- VGA Video Graphic Array
- the present invention proposes a method and device that can completely and clearly transmit information displayed on any PC desktop to a video terminal.
- the method for transmitting a PC desktop to a video terminal includes the following steps:
- the remote video terminal receives the encoded code stream and sends it to the remote video terminal through the transmission channel after processing.
- the step a further includes: after capturing the desktop information of the PC, preprocessing the desktop information.
- the preprocessing includes filtering unnecessary PC desktop information, filtering the desktop information, and editing the desktop information.
- step d includes determining whether the encoding method of the code stream is the same as the encoding method of the remote video terminal, and if the encoding method is the same, it is sent directly; otherwise, the code stream is decoded first, and then the encoding method of the remote video terminal is used to The decoded code stream is re-encoded.
- the device provided by the present invention for transmitting a PC desktop to a video terminal includes a background processing device for pre-processing captured desktop information of a local PC and encoding the same, and sending an output stream of the background processing device.
- the background processing device includes: Capture driver, output drive command to drive the operation of the entire background processing device; capturer, capture the desktop information of the PC when the drive command of the capture driver arrives; image converter, receive the desktop information output by the capturer, convert the PC Output the information format of the mobile terminal to the video terminal information format;
- the background encoder encodes the desktop information of the pre-processed PC into a code stream; the background code stream sender sends the above-mentioned code stream output from the background encoder to a terminal processing device.
- the terminal processing device includes:
- the terminal code stream transmitter sends the code stream output by the background processing device to a remote video terminal.
- the present invention sends the desktop information of the PC directly as digital stream information, avoiding the conversion of digital signals to analog signals, the clarity of the transmitted information can be improved;
- the occupied bandwidth is small, and there is no restriction on the content displayed on the PC desktop, which can be documents, films, and any content that can be displayed on the PC;
- Figure 1 is a flowchart of the method of the present invention.
- Fig. 2 is the background processing device structure and message channelizer in the present invention and the processing flow Illustration.
- FIG. 3 is a schematic structural diagram and a processing flowchart of a terminal processing device in the present invention.
- FIG. 4 is a schematic diagram of a system composition according to an embodiment of the present invention. Mode of Carrying Out the Invention
- the desktop information of the pre-processed PC is encoded into a video code stream.
- the type of the code stream can be H261 code stream, H263 code stream, JPEG code stream, etc.
- the coding method must consider the line rate, the PC and the terminal. Factors such as processing power, time delay, image clarity, etc., for example, when encoding into H261 or H263 codestream, in order to improve the definition, encoding can be performed in the manner of Appendix D of ITU-TH261.
- the local video terminal receives the encoded code stream.
- the code stream is decoded, and then the decoded information is sent to the local output device (35) for output to display the PC desktop on the local video terminal; determine whether the encoding method of the code stream is the same as the encoding method of the remote video terminal If they are the same, the local video terminal processes the code stream and sends it to the remote video terminal via the transmission channel; otherwise, the code stream is decoded first, and then the decoded code stream is encoded using the encoding method of the remote video terminal, and then transmitted. The channel is sent to the remote video terminal. As shown in FIG.
- a background processing device (1) is installed on a PC, capturing desktop information of the background PC, and then encoding the captured information into a video stream and sending it to a terminal equipped with a terminal processing device (2) via a network port.
- the local video terminal forwards the received code stream to the remote (3), so as to realize the function of transmitting PC desktop information between the local video terminal and the remote.
- the background processing device includes: a capture driver (21), a capture (22), an image pre-processor (23), an image converter (20), a background encoder (24), and a background code stream sender (25) and the message channelizer (26).
- the capture driver (21) outputs a driving command to the capture device (22), and the capture device (22) captures the PC desktop information from the PC video memory and outputs it to the image preprocessor (23) for processing, including: Filter the information to increase the shield of the image; edit the desktop information, etc.
- the image preprocessor (23) can also control whether the current desktop information is sent to the image converter for subsequent processing or is discarded according to whether there is a change in the current desktop information.
- the image converter (20) converts the PC image format output by the image preprocessor (23) into the video terminal image format, for example, performs image format conversion, resolution conversion, etc., and the converted image is sent to a background encoder ( 24), the background encoder (24) encodes in a manner agreed with the local video terminal, and the encoded stream is sent to the background stream sender (25), and the background stream sender (25) is sent to the terminal through the network port Processing device.
- the message channelizer (26) is located between the terminal processing device (2) and the background processing device, and sends the encoded message from the local video terminal to the background encoder to determine the encoding mode of the background encoder; the video from the local video terminal
- the message is sent to the background stream sender to determine the background stream sender sending rate according to the conference rate, the video capability of the meeting, and the supported video capabilities.
- the control message from the background stream sender is sent to the terminal processing device to start. And the terminal processing device sends an encoded code stream.
- the terminal processing device includes: a terminal encoder (31), and a terminal code stream. Transmitter (33), and terminal decoder (34).
- the terminal encoder (31) encodes the local image and outputs it to the terminal stream sender (33), and the terminal decoder (34) decodes the encoded stream output from the background processing device and sends it to the terminal stream sender (33 ),
- the terminal code stream sender may send only the desktop information code stream or the local image code stream of the PC, or may simultaneously send the desktop information code stream and the local image code stream in a multiplexed encoding manner.
- the terminal decoder (34) decodes the bitstream output by the background bitstream transmitter first. It is sent to the terminal encoder (31), and the terminal encoder (31) is re-encoded in the remote encoding mode, and then output to the terminal code stream transmitter (33).
- the terminal code stream transmitter (33) the terminal code stream transmitter
- the output of the background stream transmitter can be decoded by the terminal decoder (34), and then output to the local output device for display.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES03783899.2T ES2459747T3 (es) | 2002-08-07 | 2003-08-04 | Método y equipo para transferir el escritorio de un PC a un terminal de comunicación de vídeo |
AU2003255090A AU2003255090A1 (en) | 2002-08-07 | 2003-08-04 | Method and apparatus of transferring the desktop of pc to video communication terminal |
DK03783899.2T DK1521465T3 (da) | 2002-08-07 | 2003-08-04 | Fremgangsmåde og apparat til overførsel af desktoppen af en pc til en videokommunikationsterminal |
EP03783899.2A EP1521465B1 (en) | 2002-08-07 | 2003-08-04 | Method and apparatus of transferring the desktop of pc to video communication terminal |
US11/049,217 US7609288B2 (en) | 2002-08-07 | 2005-02-02 | Method and apparatus of transferring the desktop of PC to video communication terminal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN02128762.7 | 2002-08-07 | ||
CN02128762.7A CN1213605C (zh) | 2002-08-07 | 2002-08-07 | 在视讯终端中传递pc桌面的方法和装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/049,217 Continuation US7609288B2 (en) | 2002-08-07 | 2005-02-02 | Method and apparatus of transferring the desktop of PC to video communication terminal |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004015994A1 true WO2004015994A1 (fr) | 2004-02-19 |
Family
ID=31194116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2003/000627 WO2004015994A1 (fr) | 2002-08-07 | 2003-08-04 | Procede et appareil de transfert d'un plan de bureau d'un ordinateur personnel a un terminal de communication video |
Country Status (8)
Country | Link |
---|---|
US (1) | US7609288B2 (zh) |
EP (1) | EP1521465B1 (zh) |
CN (1) | CN1213605C (zh) |
AU (1) | AU2003255090A1 (zh) |
DK (1) | DK1521465T3 (zh) |
ES (1) | ES2459747T3 (zh) |
PT (1) | PT1521465E (zh) |
WO (1) | WO2004015994A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100382582C (zh) * | 2005-05-13 | 2008-04-16 | 中兴通讯股份有限公司 | 在数字电视接收装置上实现静态图像捕捉的方法和装置 |
JP4645473B2 (ja) * | 2006-02-21 | 2011-03-09 | 富士ゼロックス株式会社 | 電子会議支援プログラム、電子会議支援方法、電子会議制御装置 |
KR100875421B1 (ko) * | 2006-07-27 | 2008-12-23 | 엘지전자 주식회사 | 영상 캡처 방법 및 이를 구현할 수 있는 단말기 |
US8125510B2 (en) * | 2007-01-30 | 2012-02-28 | Ankur Agarwal | Remote workspace sharing |
US9134963B1 (en) * | 2014-07-03 | 2015-09-15 | U3D Limited | Method of unifying information and tool from a plurality of information sources |
US9626157B2 (en) | 2014-07-03 | 2017-04-18 | Able World International Limited | Method of projecting a workspace and system using the same |
US11687325B2 (en) * | 2014-07-03 | 2023-06-27 | Able World International Limited | Method for constructing an interactive digital catalog, and computer-readable storage medium and interactive digital catalog using the same |
WO2016179436A1 (en) * | 2015-05-05 | 2016-11-10 | Colorado Code Craft Patent Holdco Llc | Ultra-low latency remote application access |
CN107968955B (zh) * | 2016-10-18 | 2020-11-06 | 北京众纳鑫海网络技术有限公司 | 用于推送计算机视频桌面的背景视频的方法及装置 |
CN108900878A (zh) * | 2018-06-27 | 2018-11-27 | 福建天泉教育科技有限公司 | 一种实现无线投影的方法及*** |
CN117435146A (zh) * | 2023-12-20 | 2024-01-23 | 摩尔线程智能科技(成都)有限责任公司 | 码流生成方法、***及装置、电子设备和存储介质 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US5062136A (en) * | 1990-09-12 | 1991-10-29 | The United States Of America As Represented By The Secretary Of The Navy | Telecommunications system and method |
US5854892A (en) * | 1996-05-03 | 1998-12-29 | Intel Corporation | Video conferencing decoder engine with direct signaling to encoder engine for relaying of decoded data |
US6073192A (en) | 1994-09-07 | 2000-06-06 | Rsi Systems, Inc. | Peripheral video conferencing system with control unit that controls presentation of remote video signal through the output connector |
US6285471B1 (en) * | 1994-04-29 | 2001-09-04 | Siemens Aktiengesellschaft | Telecommunications system for transmitting images |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0549024A (ja) * | 1991-08-09 | 1993-02-26 | Fujitsu Ltd | パソコン連携式テレビ電話装置 |
US5689641A (en) * | 1993-10-01 | 1997-11-18 | Vicor, Inc. | Multimedia collaboration system arrangement for routing compressed AV signal through a participant site without decompressing the AV signal |
US6560637B1 (en) * | 1998-12-02 | 2003-05-06 | Polycom, Inc. | Web-enabled presentation device and methods of use thereof |
EP1374579A4 (en) * | 2001-03-22 | 2008-10-08 | Polycom Inc | HIGH RESOLUTION GRAPHIC SIDE CHANNEL IN A VIDEO CONFERENCE |
AU2002314902A1 (en) * | 2001-06-02 | 2002-12-16 | Polycom, Inc. | System and method for point to point integration of personal computers with videoconferencing systems |
-
2002
- 2002-08-07 CN CN02128762.7A patent/CN1213605C/zh not_active Expired - Lifetime
-
2003
- 2003-08-04 PT PT37838992T patent/PT1521465E/pt unknown
- 2003-08-04 WO PCT/CN2003/000627 patent/WO2004015994A1/zh not_active Application Discontinuation
- 2003-08-04 DK DK03783899.2T patent/DK1521465T3/da active
- 2003-08-04 AU AU2003255090A patent/AU2003255090A1/en not_active Abandoned
- 2003-08-04 EP EP03783899.2A patent/EP1521465B1/en not_active Expired - Lifetime
- 2003-08-04 ES ES03783899.2T patent/ES2459747T3/es not_active Expired - Lifetime
-
2005
- 2005-02-02 US US11/049,217 patent/US7609288B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062136A (en) * | 1990-09-12 | 1991-10-29 | The United States Of America As Represented By The Secretary Of The Navy | Telecommunications system and method |
US6285471B1 (en) * | 1994-04-29 | 2001-09-04 | Siemens Aktiengesellschaft | Telecommunications system for transmitting images |
US6073192A (en) | 1994-09-07 | 2000-06-06 | Rsi Systems, Inc. | Peripheral video conferencing system with control unit that controls presentation of remote video signal through the output connector |
US5854892A (en) * | 1996-05-03 | 1998-12-29 | Intel Corporation | Video conferencing decoder engine with direct signaling to encoder engine for relaying of decoded data |
Also Published As
Publication number | Publication date |
---|---|
DK1521465T3 (da) | 2014-04-28 |
CN1474600A (zh) | 2004-02-11 |
PT1521465E (pt) | 2014-04-30 |
EP1521465A4 (en) | 2006-06-21 |
ES2459747T3 (es) | 2014-05-12 |
CN1213605C (zh) | 2005-08-03 |
US20050151835A1 (en) | 2005-07-14 |
EP1521465A1 (en) | 2005-04-06 |
EP1521465B1 (en) | 2014-02-12 |
AU2003255090A1 (en) | 2004-02-25 |
US7609288B2 (en) | 2009-10-27 |
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