CN107809609A - Video monitoring conference system based on touch apparatus - Google Patents
Video monitoring conference system based on touch apparatus Download PDFInfo
- Publication number
- CN107809609A CN107809609A CN201711134422.8A CN201711134422A CN107809609A CN 107809609 A CN107809609 A CN 107809609A CN 201711134422 A CN201711134422 A CN 201711134422A CN 107809609 A CN107809609 A CN 107809609A
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- video
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- control instruction
- terminal
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Classifications
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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
- H04N7/15—Conference systems
- H04N7/155—Conference systems involving storage of or access to video conference sessions
-
- 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
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- 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Telephonic Communication Services (AREA)
Abstract
A kind of video monitoring conference system based on touch apparatus, multiple video terminals are connected to transmit the video server of audio, video data and control instruction；Control instruction is generated according to touch data to control at least one touch apparatus of video monitoring meeting, multiple video terminals, by the television wall server of specific mode display video pictures combination, for showing at least one video wall of video pictures combination.The present invention, control instruction is generated using touch apparatus, control video monitoring meeting, easy to operate, mobility is strong；Video conference function is powerful；Handled a case command centre available for public security organs etc., providing television consultation for commanding handles a case function.
Description
Technical field
The present invention relates to video conference field, a kind of diverse location is pointed to based on touch screen terminal specifically, being related to
Video terminal be monitored and video combination video monitoring conference system.
Background technology
Video monitoring and conference system can be used in video monitoring, consultation and video conference more, but existing regard
Frequency monitoring and meeting use professional server, or the client of ordinary PC to be operated more, and aforesaid way is not convenient enough, nothing
Method realizes quick and easy commander's operation, and needs professional operator, can not be rapid when there is crash time
Open the system.Especially for public security organs' system, if running into emergency, it is necessary to shorten the time for opening meeting, need
More professional servers with client or PC and more professional operators are set up, during this commands increase
The construction procurement budget of the heart and human input.
For example, how the hearing work of procuratorate utilizes existing as an important step indispensable in cracking of cases
The investigation of generationization and current science and technology combine closely live interrogator and commanding, by inside and outside mutual
Dynamic, writing, Coupled motion up and down, realization be distributed to concentrations, case to system, it is single arrive common transformation, coordinate to utilize each side
The resource in face, collect the wisdom of each procuratorial work commanding, so as to realize the quick detection of case, more preferably faster more accurate strike
Crime is procuratorial organ's thing in the urgent need to address, therefore inquests remote command when handling a case and be just particularly important.
And prior art, when carrying out remote command, commanding directly can not often be grasped according to the needs of oneself
Make, need technical staff to coordinate, video decoding on TV wall or operation video council are transferred in systems according to the requirement of commanding
Discuss software and carry out group of networks meeting, can not ensure that technical staff shows up in time under emergency case, while operated in original system
Transfer video decoding on-wall and group of networks can be also comparatively laborious, be not easy to make commanding quickly grasp.
Commander's work that most important effect is played in current hearing work is faced with the trend of Promotion Transformation, with science and technology
The continuous progress of the in-depth input and modernization science and technology examined by force, procuratorial organ is to commanding the convenience of work, real-time and advanced
Property also has higher requirement.
Therefore, a set of brand-new video monitoring conference system how is established, using brand-new commander's steer mode so that public
The commanding of inspection method office can conveniently carry out hearing room scene audio frequency and video and transfer display, and quickly carry out multiple
The group of networks meeting at command post scene, turn into the technical problem of prior art urgent need to resolve.
The content of the invention
In view of this, it is an object of the invention to establish a set of video monitoring conference system based on touch-screen, based on tactile
The function of wall on the video that control technology is realized, it is convenient to monitoring and acquisition that user carries out long-distance video information.
A kind of video monitoring conference system based on touch apparatus, including：
Video server, for connecting multiple video terminals and miscellaneous equipment, transmit audio, video data and control refers to
Order；
At least one touch apparatus, the touch apparatus are used to generate control instruction according to touch data, and the control refers to
Make for controlling video monitoring meeting；
Multiple video terminals, the video terminal is used to gather audio, video data, for display；
Television wall server, for obtaining audio, video data according to control instruction, and video pictures are shown by specific mode
Combination；
At least one video wall, the video wall includes one or more display units, for according to television wall server
The video pictures combination of transmission is shown.
Optionally, the video terminal includes that the video conference terminal of two-way video communication can be carried out, can carry out list
High definition monitoring terminal to video monitoring, and/or the mobile terminal that video communication can be carried out.
Optionally, the video terminal includes camera, and the camera can be based on Mechanical course or digital control
The angle of camera, position and zoom are controlled.
Optionally, the touch apparatus can generate control instruction, control source video sequence and picture shown by video wall
Combining form, specifically comprise the following steps：
Step 1：Touch apparatus selects video source to display, sends wall on video and instructs；
Step 2：Video server receives wall instruction on the video, and is forwarded to television wall server；
Step 3：Television wall server instructs according to wall on the video, according to selected picture composition form, is referring to
Determine position display video pictures, and by selected video pictures real-time display on video wall；
Step 4：Step 3 is performed repeatedly and connects multiple video terminals, is carried out group of networks meeting, is carried out video conference.
Optionally, the touch control device can generate control instruction, to the angle of the camera of video terminal, position and change
Jiao is controlled, and specifically comprises the following steps：
Step 1：Touch apparatus selects video terminal, sends camera control instruction, carries out camera control；
Step 2：Video server receives the camera control instruction, and is transmitted to video terminal；
Step 3：The video terminal enters according to the camera control instruction to the angle of camera, position and zoom
Row control.
Optionally, video control software is installed on the touch apparatus, touch terminal is based on the video control software,
Generation control instruction is selected by touching.
Optionally, the television wall server can select video source, setting video pictures combination shape according to control instruction
Formula.
Optionally, the video monitoring conference system also includes recorded broadcast server, and the recorded broadcast server can be recorded synchronously
The audio frequency and video picture of NTSC television system NTSC wall server.
Optionally, the video monitoring conference system also includes other video sources, and other video sources include video box
Formula video tape recorder, digital versatile disc player, the group of the programmable controller of visual sources and XGA shunt
One or more of, other video sources can provide audio, video data for television wall server.
Optionally, touch apparatus is smart mobile phone, tablet personal computer or IPAD.
The video monitoring conference system based on touch apparatus of the present invention has the following advantages：
1st, control instruction is generated using touch apparatus, controls video monitoring meeting, easy to operate, mobility is strong；
2nd, audio frequency and video are realized and transfer decoding on-wall and group of networks meeting function, relevant device can also be entered after video is transferred
Rack the control of platform direction and camera lens, audio size is adjusted, carrying out video recording manually to the video transferred is saved in this
Ground, it is powerful；
3rd, handled a case command centre available for public security organs etc., provide mobile control terminal for commanding, carried for commanding
Handled a case function for television consultation.
Brief description of the drawings
By the description to the embodiment of the present invention referring to the drawings, above-mentioned and other purpose of the invention, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 is the module map according to the video monitoring conference system based on touch apparatus of the specific embodiment of the invention；
Fig. 2 is the flow that video wall video display control is carried out based on touch apparatus according to the specific embodiment of the invention
Figure；
Fig. 3 is the flow chart that camera display control is carried out based on touch apparatus according to the specific embodiment of the invention；
Fig. 4 is a control interface figure according to the touch apparatus of the specific embodiment of the invention；
Fig. 5 is another control interface figure according to the touch apparatus of the specific embodiment of the invention.
1st, video server；2nd, touch apparatus；3rd, video terminal；4th, television wall server；5th, video wall；6th, recorded broadcast service
Device；7th, other video data sources.
Embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.
The present invention use video-splicing equipment, sets up video wall, one video of display or multiple videos on video wall
Combination, wall control on video is carried out by using touch apparatus, such as PAD etc., and preview and group of networks meeting are monitored to audio frequency and video.
Therefore personnel participating in the meeting, such as commanding carry out video and have access to group meeting with video pictures at any time, can to more ground personnel's and
When hold a conference or consultation and discussion, so as to realize the multi-party joint examination to major event, such as important case, improve event handling speed, accelerate
Clear up a criminal case.
In the present invention, audio, video data represents Voice ＆ Video data, including at least video data.
Referring to Fig. 1, show according to the video monitoring conference system based on touch apparatus of the specific embodiment of the invention
Module map, the video monitoring conference system include：
Video server 1, for connecting multiple video terminals and miscellaneous equipment, transmit audio, video data and control refers to
Order；Exemplary, the video server can receive the audio, video data of all video terminals, and select institute according to control instruction
The video pictures to be shown, and control instruction is sent to each video terminal, video server is equivalent to video monitoring meeting system
The central server of system.
At least one touch apparatus 2, the touch apparatus are used to generate control instruction according to touch data, and the control refers to
Make for controlling video monitoring meeting；
The control video monitoring meeting includes but is not limited to hold video monitoring meeting, terminates video monitoring meeting, adjusts
Whole TV-wall picture shape, composition video source, the position of each sprite, key frame, the switching of video frequency pick-up head, inclination or focusing
Deng.
Multiple video terminals 3, the video terminal is used to gather audio, video data, for display；
Television wall server 4, for obtaining audio, video data according to control instruction, and video pictures are shown by specific mode
Combination；
At least one video wall 5, the video wall includes one or more display units, for according to television wall server
The video pictures combination of transmission is shown.
Therefore, the present invention sends control instruction using touch apparatus, controls each of video pictures shown on video wall
Individual composition sprite, and building form, select the audio to be listened to, and the touch apparatus can use wirelessly to enter
Row communication, the control to monitored picture is realized by the APP installed on touch apparatus.
This video wall can be formed using multi-screen splicing technology.
Multi-screen splicing：It is a kind of that by multiple physical display screens, mode is modeled to higher " big of a resolution ratio in some combination
The technology of display screen ".This simulates the behavior that " the big display screen " come shows single display screen, such as on " big display screen "
Tiling shows a pictures, then image content can be presented on corresponding physical display screen by automatic separation into different parts,
There was only a part for picture on so each physical display screen, but institute's screen display content then intactly presents picture overall picture.
Mosaic screen：Multiple physics screens pass through " the big display screen " that is simulated after " multi-screen splicing " technology.According to being actually needed,
Mosaic screen can have multiple combinations mode, and such as 4 physics screens can be combined into 2x2, this several form of 1x4,4x1.Extreme condition
Under, only include a physics screen in a mosaic screen.
Windowing roaming can be realized in TV-wall picture, window, refers to a viewing area (generally rectangular) on screen,
For showing designated content.A video display area is newly increased on screen, is referred to as opened a window.Window can weigh mutually with window
Folded, priority can be set in window, and the video image of the high window of priority will block the video content of low priority window lap.Window
After being opened, can random drag and drop position, can arbitrarily be sized, both actions may all cause the region of window to be spliced in composition
Migrated in the physics screen of screen, this roaming function with regard to window.
In the present invention, the picture of each video terminal can pass to video server first, by video server according to
The video pictures that the instruction generation designated of touch apparatus is former are combined, and the video pictures generated combination then is transmitted into TV
Wall server, the video pictures received are combined by television wall server and shown on video wall.
Can also, video server only transmits control instruction, is specified by television wall server according to control instruction connection
Video terminal, connected video terminal is obtained, audio, video data is shown respectively and in the diverse location of video wall, so as in electricity
Video pictures combination is shown depending on wall.
Further, the video terminal can include can carry out two-way video communication video conference terminal, can
Carry out the high definition monitoring terminal of one-way video monitoring, and/or the mobile terminal of video communication can be carried out.
In an exemplary embodiment, the touch apparatus can generate control instruction, control shown by video wall
Source video sequence and picture composition form.
Exemplary, referring to Fig. 2, the flow that video wall video display control is carried out based on touch apparatus is shown, including
Following steps：
Step 1：Touch apparatus selects video source to display, sends wall on video and instructs；For example, command terminal selects
Handle a case room, dragging handle a case interior camera on the video wall of command terminal, command terminal sends control command.
Step 2：Video server receives wall instruction on the video, and is forwarded to television wall server；Such as Video service
Device connection television wall server failure, then prompt connection failure, if video server connection television wall server success, sends out
Wall on the video is given to instruct.
Step 3：Television wall server instructs according to wall on the video, according to selected picture composition form, is referring to
Determine position display video pictures, and by selected video pictures real-time display on video wall；
In this step, if television wall server connection video terminal failure, prompts connection failure, otherwise connect simultaneously
Show video pictures.
Step 4：Step 3 is performed repeatedly and connects multiple video terminals, is carried out group of networks meeting, is carried out video conference.
Wherein, the television wall server can carry out audio select to specified video terminal.
Further, the video terminal includes camera, and the camera can be based on Mechanical course or numeral control
System is controlled to the angle of camera, position and zoom.
The touch control device can generate control instruction, and the angle of the camera of video terminal, position and zoom are carried out
Control.
Exemplary, referring to Fig. 3, the flow that camera display control is carried out based on touch apparatus is shown, including it is as follows
Step：
Step 1：Touch apparatus selects video terminal, sends camera control instruction, carries out camera control；
For example, the passage that command terminal selection is handled a case in the room of room, carries out camera control.If touch apparatus connects video
Server failure, then connection failure is prompted, if touch apparatus connection television wall server success, sends camera control
Instruction.
Step 2：Video server receives the camera control instruction, and is transmitted to video terminal；
Step 3：The video terminal enters according to the camera control instruction to the angle of camera, position and zoom
Row control.
The touch terminal includes the user instrument of sensor, when moving the user instrument, the sensor life
Into control data.
Further, video control software is installed, it is soft that touch terminal is based on video control on the touch apparatus
Part, generation control instruction is selected by touching.
Referring to Fig. 4, Fig. 5, the control interface of the video control software is respectively illustrated.
In Fig. 4, there is video terminal list, i.e. source video sequence, for being selected, it is also an option that to be controlled
Video wall.Such as Fig. 4 top half shows the hearing mechanism of various regions, Fig. 4 the latter half shows to be controlled two
Locate video wall.
In figure 5 it is possible to select the video pictures combining form of television wall server, show the scheduling decoding of some video source
Show large-size screen monitors, the video decoding closed on a certain piece of large-size screen monitors, control the sound size of audio preview, control head or turn of ball machine
Dynamic and camera lens zoom, and the head to designated terminal, ball machine and camera lens zoom are controlled.It can select multiple existing
Field carries out multiple cascading networks commander, and the sound status at controllable each scene.
Therefore, the television wall server can select video source, setting video pictures combining form according to control instruction.
Further, the video monitoring conference system also includes recorded broadcast server 6, and the recorded broadcast server can be synchronous
The audio frequency and video picture of record tv wall server.
Further, the video monitoring conference system also includes other video sources 7, and other video sources include regarding
Frequency video cassette recorder, digital versatile disc player, the programmable controller of visual sources and XGA shunt
One or more of group, other video sources can be used for providing audio, video data for television wall server.That is video wall
Video conference the audio, video data that is provided by other video sources 7 can be provided.
Further, in the present invention, in order to reduce information transmission security, the flow load in network is reduced, it is described to touch
Touch and control instruction is only transmitted between equipment and video server, do not transmit audio, video data and text information.
In the present invention, touch apparatus can be smart mobile phone, tablet personal computer, IPAD, can by such as wired and/or
The modes such as wireless network are sent or reception signal.
Therefore, the video monitoring conference system of the invention based on touch apparatus has the following advantages：
1st, control instruction is generated using touch apparatus, controls video monitoring meeting, easy to operate, mobility is strong；
2nd, audio frequency and video are realized and transfer decoding on-wall and group of networks meeting function, relevant device can also be entered after video is transferred
Rack the control of platform direction and camera lens, audio size is adjusted, carrying out video recording manually to the video transferred is saved in this
Ground, it is powerful；
3rd, handled a case command centre available for public security organs etc., provide mobile control terminal for commanding, carried for commanding
Handled a case function for television consultation.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various changes and change.All any modifications made within spirit and principles of the present invention, it is equal
Replace, improve etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of video monitoring conference system based on touch apparatus, including：
Video server, for connecting multiple video terminals and miscellaneous equipment, transmit audio, video data and control instruction；
At least one touch apparatus, the touch apparatus are used to generate control instruction according to touch data, and the control instruction is used
In control video monitoring meeting；
Multiple video terminals, the video terminal is used to gather audio, video data, for display；
Television wall server, for obtaining audio, video data according to control instruction, and video pictures combination is shown by specific mode；
At least one video wall, the video wall includes one or more display units, for being transmitted according to television wall server
Video pictures combination shown.
2. video monitoring conference system according to claim 1, it is characterised in that：
The video terminal includes that the video conference terminal of two-way video communication can be carried out, can carry out one-way video monitoring
High definition monitoring terminal, and/or the mobile terminal that video communication can be carried out.
3. video monitoring conference system according to claim 1 or 2, it is characterised in that：
The video terminal includes camera, and the camera can be based on Mechanical course or the digital control angle to camera
Degree, position and zoom are controlled.
4. video monitoring conference system according to claim 3, it is characterised in that：
The touch apparatus can generate control instruction, control source video sequence and picture composition form shown by video wall, tool
Body comprises the following steps：
Step 1：Touch apparatus selects video source to display, sends wall on video and instructs；
Step 2：Video server receives wall instruction on the video, and is forwarded to television wall server；
Step 3：Television wall server instructs according to wall on the video, according to selected picture composition form, in specific bit
Display video pictures are put, and by selected video pictures real-time display on video wall；
Step 4：Step 3 is performed repeatedly and connects multiple video terminals, is carried out group of networks meeting, is carried out video conference.
5. video monitoring conference system according to claim 4, it is characterised in that：
The touch control device can generate control instruction, and the angle of the camera of video terminal, position and zoom are controlled,
Specifically comprise the following steps：
Step 1：Touch apparatus selects video terminal, sends camera control instruction, carries out camera control；
Step 2：Video server receives the camera control instruction, and is transmitted to video terminal；
Step 3：The video terminal is controlled according to the camera control instruction to the angle of camera, position and zoom
System.
6. according to the video monitoring conference system described in any one in claim 1,2,5, it is characterised in that：
Video control software is installed, touch terminal is based on the video control software, is selected by touching on the touch apparatus
Select generation control instruction.
7. video monitoring conference system according to claim 6, it is characterised in that：
The television wall server can select video source, setting video pictures combining form according to control instruction.
8. according to the video monitoring conference system described in any one in claim 1,2,5, it is characterised in that：
The video monitoring conference system also includes recorded broadcast server, and the recorded broadcast server being capable of synchronous recording video wall service
The audio frequency and video picture of device.
9. according to the video monitoring conference system described in any one in claim 1,2,5, it is characterised in that：
The video monitoring conference system also includes other video sources, and other video sources are recorded a video including Video Cassette
Machine, digital versatile disc player, the programmable controller of visual sources and XGA shunt one of group or
More persons, other video sources can provide audio, video data for television wall server.
10. according to the video monitoring conference system described in any one in claim 1,2,5, it is characterised in that：
Touch apparatus is smart mobile phone, tablet personal computer or IPAD.
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| CN201711134422.8A CN107809609B (en) | 2017-11-16 | 2017-11-16 | Video monitoring conference system based on touch equipment |
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| CN201711134422.8A CN107809609B (en) | 2017-11-16 | 2017-11-16 | Video monitoring conference system based on touch equipment |
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| CN108401130A (en) * | 2018-04-04 | 2018-08-14 | 广州市欧域科技有限公司 | A kind of monitoring TV wall for video conference |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108401130A (en) * | 2018-04-04 | 2018-08-14 | 广州市欧域科技有限公司 | A kind of monitoring TV wall for video conference |
| US11999018B2 (en) | 2018-08-31 | 2024-06-04 | Indium Corporation | SnBi and SnIn solder alloys |
| CN109640029A (en) * | 2018-11-16 | 2019-04-16 | 视联动力信息技术股份有限公司 | The method and apparatus that wall is shown on a kind of video flowing |
| CN109640029B (en) * | 2018-11-16 | 2020-10-02 | 视联动力信息技术股份有限公司 | Method and device for displaying video stream on wall |
| CN109782974A (en) * | 2019-01-04 | 2019-05-21 | 北京淳中科技股份有限公司 | Signal source packet method for previewing, device, electronic equipment and readable medium |
| CN109874037A (en) * | 2019-01-17 | 2019-06-11 | 北京文香信息技术有限公司 | A kind of multichannel audio-video frequency playback method, device, storage medium and terminal device |
| CN110062194A (en) * | 2019-04-19 | 2019-07-26 | 视联动力信息技术股份有限公司 | A kind of processing method of audio, video data, device and device and storage medium |
| CN110062194B (en) * | 2019-04-19 | 2022-01-11 | 视联动力信息技术股份有限公司 | Audio and video data processing method, device and storage medium |
| CN113542660A (en) * | 2021-07-20 | 2021-10-22 | 随锐科技集团股份有限公司 | Method, system and storage medium for realizing conference multi-picture high-definition display |
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