CN101179696A - Method, system and equipment for remote regulating image parameter of session television terminal - Google Patents
Method, system and equipment for remote regulating image parameter of session television terminal Download PDFInfo
- Publication number
- CN101179696A CN101179696A CNA200710178718XA CN200710178718A CN101179696A CN 101179696 A CN101179696 A CN 101179696A CN A200710178718X A CNA200710178718X A CN A200710178718XA CN 200710178718 A CN200710178718 A CN 200710178718A CN 101179696 A CN101179696 A CN 101179696A
- Authority
- CN
- China
- Prior art keywords
- parameter
- image
- video conference
- conference terminal
- image parameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method for remote regulation of an image parameter of a conference video terminal, which sets a command for regulating an image parameter inside an H.281 protocol and includes: the image regulation parameter of the conference video terminal to be regulated is set; and the set image regulation parameter is carried by the set command for regulating the image parameter and then is transmitted to the conference video terminal which is to be regulated. The invention also provides a system and a device for remote regulation of the image parameter on the conference video terminal. The system and the device, by applying the command for regulating the image parameter, realize the remote regulation of the image parameter of a camera of the conference video terminal, thus facilitating the utilization by the consumer and increasing the experience of the consumer.
Description
Technical field
The present invention relates to the videoconference terminal communication technology, relate in particular to a kind of method, system and equipment of remote regulating image parameter of session television terminal.
Background technology
Along with continuing to bring out of Digital Signal Processing, compression coding technology and transfer of data new technology, TV conference system is arisen at the historic moment.TV conference system is to utilize TV tech and equipment by various transmission networks, sets up the system of the video and audio communication between a plurality of users.The purpose of TV conference system is that the video conference terminal in a plurality of places that are separated by is linked together, and makes the participant of each side face the scene just like body and has a meeting together, the experience of talking with face-to-face.
At present the most widely used H.320, H.323 TV conference system is all supported H.281 agreement, can realize the camera of video conference terminal is carried out Long-distance Control by agreement H.281, comprise: select camera, control camera to rotate, preserve camera position, recover the camera position that presets etc.Prior art can satisfy most of practical application needs by agreement H.281 to the control operation of conference television terminal camera, but in actual applications because the position of camera and lighting problem etc., often need regulate, to reach the better image effect the image parameter of camera.And prior art can only realize this locality adjusting of conference television terminal camera image parameter at present, promptly comes to the meeting-place personally by operating personnel the image parameter of the conference television terminal camera of needs adjusting is carried out manual adjustments.Because prior art can't realize the remote adjustment to the conference television terminal camera image parameter, makes that user's use is very inconvenient.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method, system and equipment of remote regulating image parameter of session television terminal, to solve the problem that prior art can't realize the conference television terminal camera image parameter is carried out remote adjustment.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of remote regulating image parameter of session television terminal, H.281 in the agreement image parameter adjusting command is being set, this method may further comprise the steps:
Determine to treat the image adjustment parameter that the adjusting video conference terminal is regulated;
Determined image adjustment parameter is carried in the set image parameter adjusting command sends to video conference terminal described to be regulated.
Described determine to treat regulate the image adjustment parameter that video conference terminal is regulated, specifically comprise:
Obtain described present image parameter of waiting to regulate video conference terminal;
Treat the image adjustment parameter that the adjusting video conference terminal is regulated according to the present image parameter setting of being obtained.
This method further comprises: H.281 the query image parameter command is being set and is reporting the image parameter order in the agreement;
Accordingly, described obtaining waits that the present image parameter of regulating video conference terminal is: wait to regulate video conference terminal and send set query image parameter command to described, and receive that video conference terminal described to be regulated returns carry self present image parameter report the image parameter order.
The described image parameter adjusting command is sent to waits to regulate after the video conference terminal, and this method also comprises: describedly wait to regulate video conference terminal the image parameter of self camera is adjusted to the image adjustment parameter of carrying in the described image parameter adjusting command.
Described image adjustment parameter comprises: brightness, colourity and contrast.
The present invention also provides a kind of system of remote regulating image parameter of session television terminal, comprising: control end and video conference terminal to be regulated, wherein,
Control end is used to determine treat and regulates the image adjustment parameter that video conference terminal is regulated, and the image adjustment parameter of determining is carried in the set image parameter adjusting command sends to video conference terminal described to be regulated;
Video conference terminal to be regulated is used for the image parameter of self camera is adjusted to the image adjustment parameter that the image parameter adjusting command that receives is carried.
The present invention also provides a kind of control end, comprising: image adjustment parameter determining unit and adjusting parameter command transmitting element, wherein,
Image adjustment parameter determining unit is used to determine to treat the image adjustment parameter that the adjusting video conference terminal is regulated;
Regulate the parameter command transmitting element, be used for that determined image adjustment parameter is carried on set image parameter adjusting command and send to video conference terminal to be regulated.
Described image parameter determining unit further comprises: the query argument order sends subelement, reports parameter command reception subelement and image adjustment parameter that subelement is set, wherein,
The query argument order sends subelement, is used for waiting to regulate video conference terminal and sending set query image parameter command to described;
Report parameter command to receive subelement, be used to receive video conference terminal described to be regulated returns carry self present image parameter report the image parameter order;
The image adjustment parameter is provided with subelement, is used for treating the image adjustment parameter that the adjusting video conference terminal is regulated according to the present image parameter setting that is received.
The present invention also provides a kind of video conference terminal to be regulated, and comprising: image parameter adjusting command receiving element and parameter regulation unit, wherein,
Image parameter adjusting command receiving element is used to receive the image parameter adjusting command of control end;
The parameter regulation unit is used for the described image parameter of regulating video conference terminal self camera of waiting is adjusted to the image adjustment parameter that the image parameter adjusting command that receives is carried.
Describedly wait to regulate video conference terminal and also comprise: query argument order receiving element and report the parameter command transmitting element, wherein,
Query argument order receiving element is used to receive the query image parameter command of control end; Report the parameter command transmitting element, be used for according to described query image parameter command to control end return carry self present image parameter report the image parameter order.
The present invention is by expanding H.281 agreement, in existing H.281 protocol command, the query image parameter command is set, report the image parameter order and regulate the image parameter order, control end is to waiting that regulating video conference terminal sends the query image parameter command, and receive that video conference terminal to be regulated returns carry self present image parameter report the image parameter order, according to the present image parameter obtained the image adjustment parameter being set then is carried to regulate in the image parameter order and sends to video conference terminal to be regulated, thereby the realization control end is treated the remote adjustment of regulating image parameter of session television terminal, convenient for users to use, increased user experience, and by inquiry, report the image parameter order to obtain to wait and regulate the foundation of video conference terminal current images parameter when the image adjustment parameter is set, can better consumer-orientedly operate.
Description of drawings
Fig. 1 is the method flow diagram of a kind of remote regulating image parameter of session television terminal of the present invention;
Fig. 2 is the method flow diagram of the remote regulating image parameter of session television terminal of the embodiment of the invention;
Fig. 3 is the composition structural representation of a kind of remote regulating image parameter of session television terminal of the present invention system.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, Fig. 1 is the method flow diagram of a kind of remote regulating image parameter of session television terminal of the present invention, mainly may further comprise the steps:
The method of remote regulating image parameter of session television terminal of the present invention is to have set up the order that some are used to regulate the camera image parameter of video conference terminal in protocol command H.281, and is as shown in table 1:
| The order implication | | Parameter | 1 | Parameter 2 | Parameter 3 |
| The query image parameter | 0x18 | Do not have | Do not have | Do not have | |
| Regulate image parameter | 0x19 | Brightness | Colourity | Contrast | |
| Report image parameter | 0x1A | Brightness | Colourity | Contrast |
Table 1
In above-mentioned table 1, the query image parameter command is used for inquiry and waits to regulate video conference terminal current images parameter, corresponding command code is set to 0x18, there is not parameter in this order, because need not carry the parameter type that will inquire about in the query image parameter command, the image parameter that default query is all; Regulate the image parameter order and be used for order and wait to regulate video conference terminal and regulate according to the image parameter that is provided with, corresponding command code is set to 0x19, comprises three parameters in this order: brightness, colourity and contrast; Report the image parameter order to be used to wait to regulate video conference terminal and report self current images parameter to control end, corresponding command code is set to 0x1A, comprises three parameters in this order: brightness, colourity and contrast.
It is to be noted, the setting of command code is not unique, for example: allow to be provided with in the scope in command code, the command code that query image parameter command correspondence also can be set is 0x19, it is 0x18 or the like that setting reports the command code of image parameter order correspondence, the purpose that command code is set is the image command for the unique identification correspondence, so long as get final product in allowed band.
Control end is to waiting that regulating video conference terminal sends the query image parameter command, after video conference terminal to be regulated receives this query image parameter command, to control end return carry remain to be regulated video conference terminal present image parameter report the image parameter order, control end can be shown to the user of control end with receiving the present image parameter of waiting to regulate video conference terminal by display interface, the user then can be provided with to treat on control end and regulate the image adjustment parameter that video conference terminal is regulated according to the image parameter that shows, as: brightness, colourity and contrast, the image adjustment parameter of setting can be stored in this control end.
The order that control end will be regulated image parameter sends to long-range video conference terminal to be regulated, carry in this order that user in the step 101 is provided with treat and regulate the image adjustment parameter that video conference terminal is regulated.Wait to regulate video conference terminal this order is received, and, this is waited that the image parameter of regulating video conference terminal self camera is adjusted on the corresponding numerical value according to the image adjustment parameter of carrying in the receive order.
Further elaborate below in conjunction with the method for specific embodiment to the invention described above, as shown in Figure 2, Fig. 2 is the method flow diagram of the remote regulating image parameter of session television terminal of the embodiment of the invention, may further comprise the steps:
Realize that control end regulates the control of video conference terminal to long-range waiting, will realize that at first control end and long-range waiting regulate seeing mutually between the video conference terminal.Can wait to regulate the broadcasting of video conference terminal again by carrying out the broadcasting of control end earlier, seeing mutually between the video conference terminal regulated in realization control end and long-range waiting.
H.281 protocol data transmits by the LSD passage, only have the LSD token and could send H.281 protocol data, various image command among the present invention all belong to H.281 protocol data, therefore at control end before H.281 long-range video conference terminal to be regulated transmits protocol data, at first need to apply for the LSD token.For multipoint control unit (MCU, Multipoint Control Unit) TV conference system of Jie Ruing, control end returns the success response of carrying the LSD token by MCU to control end then, and the LSD token is distributed to this control end to the request that MCU sends application LSD token.
It is pointed out that for control end with wait to regulate the situation that video conference terminal is connected in point-to-point mode since control end can be directly to waiting that regulating video conference terminal sends the image parameter adjusting command, then control end does not need to apply for the LSD token.
The application of LSD token shows successfully that control end and long-range waiting are regulated between the video conference terminal and can carry out the H.281 transmission of protocol data, control end can send various image command by the LSD passage and treat and regulate video conference terminal and carry out image parameter and regulate, and then forwards step 204 to and continues flow process; LSD token application failure shows that control end and long-range waiting are regulated between the video conference terminal and can't carry out the H.281 transmission of protocol data, then direct process ends.
Control end is to waiting that regulating video conference terminal sends the query image parameter command, after this video conference terminal to be regulated receives the query image parameter command, return to control end and to report the image parameter order, this reports and carries the present image parameter that this waits to regulate video conference terminal in the image parameter order, comprises current brightness, colourity and contrast.It is to be noted, step 204 is not the steps necessary of the embodiment of the invention, control end is regulated video conference terminal and is carried out before image parameter regulates treating, can obtain the present image parameter of this video conference terminal, but control end gets access to the image parameter of waiting to regulate video conference terminal by step 204, can instruct control end to carry out the setting of image adjustment parameter.
The present image parameter of waiting to regulate video conference terminal that the user obtains in step 204 according to control end, setting is treated and is regulated the image adjustment parameter that video conference terminal is regulated, and by control end the image adjustment parameter that is provided with is carried to regulate in the image parameter order and sends to video conference terminal to be regulated.And wait to regulate video conference terminal this order is received, and, this is waited that the image parameter of regulating video conference terminal self camera is adjusted on the corresponding numerical value according to the image adjustment parameter of carrying in the receive order.
For realizing said method, the present invention also provides a kind of system of remote regulating image parameter of session television terminal, as shown in Figure 3, this system comprises: control end 100 and wait to regulate video conference terminal 200, wherein, control end 100 is used to determine treat and regulates the image adjustment parameter that video conference terminal 200 is regulated, and the image adjustment parameter of determining is carried on to send in the set image parameter adjusting command waits to regulate video conference terminal 200.Wait to regulate video conference terminal 200, connect control end 100, be used for the image parameter of self camera is adjusted to the image adjustment parameter that the image parameter adjusting command that receives is carried.
Wherein, control end 100 comprises: image adjustment parameter determining unit 110 and adjusting parameter command transmitting element 120, image adjustment parameter determining unit 110 is used to determine to treat the image adjustment parameter that adjusting video conference terminal 200 is regulated.Regulate parameter command transmitting element 120, connect image adjustment parameter determining unit 110, be used for that determined image adjustment parameter is carried on set image parameter adjusting command and send to and wait to regulate video conference terminal 200.
110 of image parameter determining units further comprise: the query argument order sends subelement 111, reports parameter command reception subelement 112 and image adjustment parameter that subelement 113 is set, wherein, the query argument order sends subelement 111, is used for to waiting that regulating video conference terminal 200 sends set query image parameter command.Report parameter command to receive subelement 112, connect the query argument order and send subelement 111, be used to receive wait to regulate video conference terminal 200 returns carry self present image parameter report the image parameter order.The image adjustment parameter is provided with subelement 113, connects to report parameter command to receive subelement 112, is used for treating the image adjustment parameter that adjusting video conference terminal 200 is regulated according to the present image parameter setting that is received.
Wherein, waiting to regulate video conference terminal 200 comprises: image parameter adjusting command receiving element 210, parameter regulation unit 220, query argument order receiving element 230 and report parameter command transmitting element 240.Wherein, image parameter adjusting command receiving element 210 is used to receive the image parameter adjusting command of control end 100.Parameter regulation unit 220, connection layout be as parameter regulation order receiving element 210, and the image parameter that is used for waiting to regulate video conference terminal 200 self camera is adjusted to the image adjustment parameter that the image parameter adjusting command that receives is carried.Query argument order receiving element 230 is used to receive the query image parameter command of control end 100.Report parameter command transmitting element 240, connect query argument order receiving element 230, be used for according to the query image parameter command to control end 100 return carry self present image parameter report the image parameter order.
In sum, the present invention is by expanding H.281 agreement, increases in agreement H.281 and inquire about, reports, regulates the order of image parameter, and can utilize the remote adjustment of those order realizations to the conference television terminal camera image parameter.It is pointed out that image command of the present invention is not limited only to the described inquiry of the embodiment of the invention, reports and regulates three kinds, can expand in actual applications as required; In addition, image parameter of the present invention also is not limited only to three kinds of the described brightness of the embodiment of the invention, colourity and contrasts, also can be other image parameter.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. the method for a remote regulating image parameter of session television terminal is characterized in that, H.281 in the agreement image parameter adjusting command is being set, and this method may further comprise the steps:
Determine to treat the image adjustment parameter that the adjusting video conference terminal is regulated;
Determined image adjustment parameter is carried in the set image parameter adjusting command sends to video conference terminal described to be regulated.
2. according to the method for the described remote regulating image parameter of session television terminal of claim 1, it is characterized in that, described determine to treat regulate the image adjustment parameter that video conference terminal is regulated, specifically comprise:
Obtain described present image parameter of waiting to regulate video conference terminal;
Treat the image adjustment parameter that the adjusting video conference terminal is regulated according to the present image parameter setting of being obtained.
3. according to the method for the described remote regulating image parameter of session television terminal of claim 2, it is characterized in that this method further comprises: H.281 the query image parameter command is being set and is reporting the image parameter order in the agreement;
Accordingly, described obtaining waits that the present image parameter of regulating video conference terminal is: wait to regulate video conference terminal and send set query image parameter command to described, and receive that video conference terminal described to be regulated returns carry self present image parameter report the image parameter order.
4. according to the method for the described remote regulating image parameter of session television terminal of claim 1, it is characterized in that, the described image parameter adjusting command is sent to waits to regulate after the video conference terminal, and this method also comprises: describedly wait to regulate video conference terminal the image parameter of self camera is adjusted to the image adjustment parameter of carrying in the described image parameter adjusting command.
5. according to the method for each described remote regulating image parameter of session television terminal of claim 1 to 4, it is characterized in that described image adjustment parameter comprises: brightness, colourity and contrast.
6. the system of a remote regulating image parameter of session television terminal is characterized in that, comprising: control end and video conference terminal to be regulated, wherein,
Control end is used to determine treat and regulates the image adjustment parameter that video conference terminal is regulated, and the image adjustment parameter of determining is carried in the set image parameter adjusting command sends to video conference terminal described to be regulated;
Video conference terminal to be regulated is used for the image parameter of self camera is adjusted to the image adjustment parameter that the image parameter adjusting command that receives is carried.
7. a control end is characterized in that, comprising: image adjustment parameter determining unit and adjusting parameter command transmitting element, wherein,
Image adjustment parameter determining unit is used to determine to treat the image adjustment parameter that the adjusting video conference terminal is regulated;
Regulate the parameter command transmitting element, be used for that determined image adjustment parameter is carried on set image parameter adjusting command and send to video conference terminal to be regulated.
8. according to the described control end of claim 7, it is characterized in that described image parameter determining unit further comprises: the query argument order sends subelement, reports parameter command reception subelement and image adjustment parameter that subelement is set, wherein,
The query argument order sends subelement, is used for waiting to regulate video conference terminal and sending set query image parameter command to described;
Report parameter command to receive subelement, be used to receive video conference terminal described to be regulated returns carry self present image parameter report the image parameter order;
The image adjustment parameter is provided with subelement, is used for treating the image adjustment parameter that the adjusting video conference terminal is regulated according to the present image parameter setting that is received.
9. a video conference terminal to be regulated is characterized in that, comprising: image parameter adjusting command receiving element and parameter regulation unit, wherein,
Image parameter adjusting command receiving element is used to receive the image parameter adjusting command of control end;
The parameter regulation unit is used for the described image parameter of regulating video conference terminal self camera of waiting is adjusted to the image adjustment parameter that the image parameter adjusting command that receives is carried.
10. according to claim 9 video conference terminal described to be regulated, it is characterized in that, describedly wait to regulate video conference terminal and also comprise: query argument order receiving element and report the parameter command transmitting element, wherein,
Query argument order receiving element is used to receive the query image parameter command of control end;
Report the parameter command transmitting element, be used for according to described query image parameter command to control end return carry self present image parameter report the image parameter order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710178718XA CN101179696A (en) | 2007-12-04 | 2007-12-04 | Method, system and equipment for remote regulating image parameter of session television terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710178718XA CN101179696A (en) | 2007-12-04 | 2007-12-04 | Method, system and equipment for remote regulating image parameter of session television terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101179696A true CN101179696A (en) | 2008-05-14 |
Family
ID=39405760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710178718XA Pending CN101179696A (en) | 2007-12-04 | 2007-12-04 | Method, system and equipment for remote regulating image parameter of session television terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101179696A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011091755A1 (en) * | 2010-01-29 | 2011-08-04 | 华为终端有限公司 | Method and device for processing multi-picture video image |
| CN102905073A (en) * | 2012-09-28 | 2013-01-30 | 歌尔声学股份有限公司 | Control device of television camera |
| CN103973987A (en) * | 2014-05-30 | 2014-08-06 | 深圳市中兴移动通信有限公司 | Mobile terminal as well as method and device for setting camera shooting parameters thereof |
| CN105100545A (en) * | 2014-05-23 | 2015-11-25 | 三亚中兴软件有限责任公司 | Method for adjusting brightness of frame, multipoint control unit (MCU) and terminal |
| CN106230608A (en) * | 2016-07-21 | 2016-12-14 | 山东共达信息技术有限公司 | A kind of cloud regards sound intelligent interactive system |
| CN107222771A (en) * | 2017-06-27 | 2017-09-29 | 青岛海信电器股份有限公司 | Remote control and the method adjusted based on remote control to terminal parameter |
| CN110392225A (en) * | 2018-04-23 | 2019-10-29 | 北京视联动力国际信息技术有限公司 | A kind of control method and view networked video conference system |
-
2007
- 2007-12-04 CN CNA200710178718XA patent/CN101179696A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011091755A1 (en) * | 2010-01-29 | 2011-08-04 | 华为终端有限公司 | Method and device for processing multi-picture video image |
| US8947498B2 (en) | 2010-01-29 | 2015-02-03 | Huawei Device Co., Ltd. | Method and device for processing multi-picture video image |
| CN102905073A (en) * | 2012-09-28 | 2013-01-30 | 歌尔声学股份有限公司 | Control device of television camera |
| CN102905073B (en) * | 2012-09-28 | 2014-12-24 | 歌尔声学股份有限公司 | Control device of television camera |
| CN105100545A (en) * | 2014-05-23 | 2015-11-25 | 三亚中兴软件有限责任公司 | Method for adjusting brightness of frame, multipoint control unit (MCU) and terminal |
| WO2015176489A1 (en) * | 2014-05-23 | 2015-11-26 | 中兴通讯股份有限公司 | Screen brightness adjustment method, multipoint controller unit mcu and terminal |
| CN103973987A (en) * | 2014-05-30 | 2014-08-06 | 深圳市中兴移动通信有限公司 | Mobile terminal as well as method and device for setting camera shooting parameters thereof |
| CN106230608A (en) * | 2016-07-21 | 2016-12-14 | 山东共达信息技术有限公司 | A kind of cloud regards sound intelligent interactive system |
| CN107222771A (en) * | 2017-06-27 | 2017-09-29 | 青岛海信电器股份有限公司 | Remote control and the method adjusted based on remote control to terminal parameter |
| CN110392225A (en) * | 2018-04-23 | 2019-10-29 | 北京视联动力国际信息技术有限公司 | A kind of control method and view networked video conference system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101179696A (en) | Method, system and equipment for remote regulating image parameter of session television terminal | |
| WO2011088656A1 (en) | Method and system for implementing three-party call of videophone by mobile terminals | |
| US7884844B2 (en) | System for conducting videoconferencing session over television network | |
| CN103327287B (en) | A kind of conference signal playing method and device, video conference terminal, mobile device | |
| CN102801956B (en) | Network video monitoring device and method | |
| CN100551030C (en) | A kind of method of many picture controls in cascade connection conference television system | |
| KR20140098573A (en) | Apparatus and Methd for Providing Video Conference | |
| US20140380387A1 (en) | System, apparatus and method for utilizing a multimedia service | |
| CN105472306A (en) | Video conference data sharing method and related device | |
| CN105282478A (en) | Volume regulating method and device and multipoint control unit | |
| CN104902199A (en) | Projection method, terminal and system | |
| EP2637404B1 (en) | Method and device for controlling multiple auxiliary streams, and network system | |
| CN101635818A (en) | Method and system for monitoring information transmission | |
| CN100366080C (en) | Method of implementing switching of single picture and multi-pictures in conference television system | |
| CN101635822B (en) | Method for realizing double stream automatic transmission of conference television terminal | |
| US20190098351A1 (en) | Method for managing the access right to an item of digital content | |
| CN104601932A (en) | Satellite video conference system and method | |
| CN100502295C (en) | Terminal dynamic access method based on multi-point control unit | |
| CN113612857A (en) | Transmission device, receiving device, information transmission system and information transmission method | |
| KR20150014785A (en) | Multilateral communication broadcasting system and service providing method thereof | |
| CN107222706B (en) | Video preview method and system | |
| US8799497B2 (en) | Headend system based on IP network, method of operating the headend system, and QAM pre-processor | |
| CA2484728A1 (en) | Apparatus and method for distribution of streamed real-time information between clients | |
| CN101309388A (en) | Control method for call image quality of video telephone and mobile phone adopting the method | |
| Nguyen et al. | A cross-layer framework for multi-user 360-degree video streaming over cellular networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080514 |