CN102547204A - Receiving device, screen picture transmission system and screen picture transmission method - Google Patents
Receiving device, screen picture transmission system and screen picture transmission method Download PDFInfo
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- CN102547204A CN102547204A CN201010591114XA CN201010591114A CN102547204A CN 102547204 A CN102547204 A CN 102547204A CN 201010591114X A CN201010591114X A CN 201010591114XA CN 201010591114 A CN201010591114 A CN 201010591114A CN 102547204 A CN102547204 A CN 102547204A
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Abstract
The invention discloses a receiving device, a screen picture transmission system and a screen picture transmission method. The screen picture transmission method comprises the following steps that: a transmitting end captures screen picture information, transmits the screen picture information into a receiving end, detects the operation of a user and outputs a mode switching signal; and the receiving end temporarily stores the screen picture information transmitted by the transmitting end so as to update the screen picture by virtue of a display device, and switches the screen picture into an operation mode or a video mode according to the mode switching signal, wherein the screen picture information within longer play time can be temporarily stored in the video mode, and the screen picture information within shorter play time can be temporarily stored in the operation mode. According to the receiving device, the screen picture transmission system and the screen picture transmission method which are disclosed by the embodiment of the invention, a video can be smoothly played in the video mode, and better real-time control sense can be obtained in the operation mode.
Description
Technical field
The present invention relates to a kind of receiving system, screen picture transmission system with and transmission method, the receiving system of particularly a kind of adjustable delay time, screen picture transmission system with and transmission method.
Background technology
Sharing the screen picture is one of important application of Information technology, for example carry out far-end control with far-end desktop (remote desktop), or computer is connected with projector to carry out bulletin etc. with wireless communication mode.Share screen picture technology in the past because frame rate (frame rate) is lower, be only applicable to transmit static content.But along with computer usefulness, image compress technique and wireless network frequency range are constantly progressive, share screen picture technology now and have advanced to and to see through wireless network, view and admire the substance film in the far-end desktop glibly.In this field, the screen image information is to see through software program through operating system to obtain undistorted screen image information.
Existing far-end desktop system is when transmission screen picture, and receiving terminal can be kept in the screen picture data hardly, transmits the screen picture presents the screen picture to receiving terminal time delay (latency delay) to reduce transmission ends.But if will in the wireless transmission environment, transmit the desktop that comprises substance film glibly, the temporary screen picture data of receiving terminal is again necessary.Because most wireless transmission environment; Especially wireless network; The transmission package arrives at the time of receiving terminal and differs; At this moment have only by the temporary enough screen picture datas of receiving terminal and be used as buffering, just might let substance film keep smoothness and not have acute broadcasting speed of jumping (jitter) at receiving terminal.In other words, if receiving terminal has temporary screen picture data, transmission ends transmits screen picture to the time delay that receiving terminal presents the screen picture will be increased thereupon.Yet when carrying out far-end control, bigger delay can't let the user of far-end that preferable instant sense of control is arranged.For example, the user knocks keyboard after 2 to 3 seconds at far-end, could produce corresponding response in the display frame, the main frame of the more wayward far-end of user's this moment.
In sum, proposing a kind ofly to transmit screen picture method and system so that can keep the smoothness of video when playing film, is the target that the present utmost point need be made great efforts and preferable instant sense of control is arranged when operating host.
Summary of the invention
The present invention provide a kind of receiving system, screen picture transmission system with and transmission method; It is that the operation that detects the user is switched between an operator scheme and a video mode with control system, and wherein when operator scheme, temporary less screen image information makes the time delay that presents the screen picture shorter; To let the user that preferable instant sense of control is arranged; And when video mode, temporary more screen image information, and displaying video comparatively glibly.
The screen picture transmission system of one embodiment of the invention comprises a transmitting device and a receiving system.Transmitting device comprises an acquisition module, and it is in order to capture a screen image information; One first communication interface, it sends out in order to convert the screen image information to a communication signal; And one first processing unit, itself and acquisition module and first communication interface electrically connect, and in order to handling the screen image information, and send out via first communication interface.Receiving system comprises one second communication interface, and it is in order to receive communication signal; One buffer, it upgrades its screen picture for a display unit according to the screen image information in order to temporary screen image information; One detection module, it is in order to detecting a user operation, and output corresponds to a mode switching signal of an operator scheme or a video mode; And one second processing unit; Itself and second communication interface, buffer and detection module electrically connect, and second processing unit is in order to access buffer, and switch to operator scheme or video mode according to mode switching signal control receiving system; Wherein, The screen image information of buffer temporary one first reproduction time length when video mode, the screen image information of temporary one second reproduction time length when operator scheme, and the first reproduction time length is greater than the second reproduction time length.
The receiving system of another embodiment of the present invention is to form a screen picture transmission system with a transmitting device.Receiving system comprises a communication interface, a buffer, a detection module and a processing unit.Communication interface is in order to receive the communication signal that transmitting device transmitted, and it comprises a screen image information.Buffer upgrades its screen picture for a display unit according to the screen image information in order to temporary screen image information.Detection module is in order to detecting a user operation, and output corresponds to a mode switching signal of an operator scheme or a video mode.Processing unit and communication interface, buffer and detection module electrically connect.Processing unit is in order to access buffer; And switch to operator scheme or video mode according to mode switching signal control receiving system; Wherein, The screen image information of buffer temporary one first reproduction time length when video mode, the screen image information of temporary one second reproduction time length when operator scheme, and the first reproduction time length is greater than the second reproduction time length.
The screen picture transmission method of further embodiment of this invention comprises: a transmission ends captures a screen image information and is sent to a receiving terminal; Detect a user operation, and output corresponds to a mode switching signal of an operator scheme or a video mode; Receiving terminal receives and keeps in the screen image information, upgrades its screen picture for a display unit according to the screen image information; And receiving terminal switches to operator scheme or video mode according to mode switching signal; Wherein, The screen image information of temporary one first reproduction time length when video mode; The screen image information of temporary one second reproduction time length when operator scheme, and the first reproduction time length is greater than the second reproduction time length.
The receiving system of the embodiment of the invention, screen picture transmission system with and transmission method; It is that the operation that detects the user is switched between an operator scheme and a video mode with control system; Displaying video glibly when video mode then has preferable instant sense of control when operator scheme.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute qualification of the present invention.In the accompanying drawings:
Fig. 1 is a calcspar, shows the screen picture transmission system of one embodiment of the invention;
Fig. 2 is a flow chart, shows the screen picture transmission method of one embodiment of the invention.
Drawing reference numeral:
10 screen picture transmission systems
11 transmitting devices
111 acquisition modules
112 first communication interfaces
113 first processing units
114 coding modules
115 first detection modules
12 receiving systems
121 second communication interfaces
122 second processing units
123 buffers
124 second detection modules
125 playing modules
126 first connecting interfaces
127 second connecting interfaces
20 display unit
30 humanization interface devices
S21～S27 screen picture transmitting step
Embodiment
Below cooperate appended graphic explanation in detail, when the effect that is easier to understand the object of the invention, technology contents, characteristics and is reached through specific embodiment.
Please with reference to Fig. 1, the screen picture transmission system 10 of one embodiment of the invention comprises a transmitting device 11 and a receiving system 12.Transmitting device 11 comprises an acquisition module 111, one first communication interface 112 and one first processing unit 113.Acquisition module 111 is in order to capture a screen image information.For example, acquisition module 111 is to see through software program through operating system to obtain undistorted screen image information.First communication interface 112 converts a communication signal in order to the screen image information that acquisition module 111 is captured and sends out.First processing unit 113 electrically connects with the acquisition module 111 and first communication interface 112, in order to handling the screen image information that acquisition module 111 is captured, and sends out via first communication interface 112.In one embodiment, between the acquisition module 111 and first processing unit 113 coding module 114 can be set.The screen image information that coding module 114 is captured in order to coding acquisition module 111 is to alleviate the computational burden of first processing unit 113.
Receiving system 12 comprises one second communication interface 121, a buffer 123, one second detection module 124 and one second processing unit 122.Second communication interface 121 is in order to receive the communication signal that transmitting device 11 is transmitted.In one embodiment, first communication interface 112 and second communication interface 121 are followed the communication standard of cable network or wireless network.Second processing unit 122 and second communication interface 121, buffer 123 and second detection module 124 electrically connect.Second processing unit 122 receives the screen image information that is demodulated from second communication interface 121; And the screen image information is temporary in buffer 123 according to demand, upgrade its screen picture for a display unit 20 according to the screen image information in the buffer 123.
The above-mentioned explanation that continues, second processing unit 122 can switch to operator scheme or video mode according to the mode switching signal control receiving system 12 that second detection module 124 is exported.When video mode; The screen image information of second processing unit 122 temporary one first reproduction time length in buffer 123; When operator scheme; The screen image information of second processing unit 122 temporary one second reproduction time length in buffer 123, wherein the first reproduction time length is greater than the second reproduction time length.In other words, when video mode, it is longer to the time delay that receiving system 12 presents the screen picture that transmitting device 11 transmits the screen picture; And when operator scheme, time delay is shorter.Be anticipated that the second reproduction time length is shorter, it is just shorter that transmitting device 11 transmission screen picture to receiving systems 12 present the time delay of screen picture.
In one embodiment, second processing unit 122 can be play the screen image information that is stored in buffer 123 through a playing module 125.For example, playing module 125 can be realized by software, but be not limited thereto.When video mode, playing module 125 was waited for after the buffer time of setting in advance, just began according to the time stamp in each screen image information (time stamp), play with original broadcasting speed and was stored in the screen image information in the buffer 123.When receiving system 12 when video mode switches to operator scheme; For time delay is shortened fast; Playing module 125 can quicken the screen image information that output buffer 123 is kept in when video mode; For example improve the frame rate (frame rate) of output video, that is playing module 125 ignores the time stamp of each screen image information, and be stored in the screen image information of buffer 123 with broadcasting speed output faster.Perhaps, playing module 125 also can directly abandon the screen image information of being kept in when the video mode in the buffer 123.Thus, received screen image information promptly is not to use the screen picture of person when operation after the receiving system 12, because time delay is shorter, and user even can't discover, so the user can have preferable instant sense of control.
Opposite; When receiving system 12 when operator scheme switches to video mode; Playing module 125 can suspend output and be temporary in the screen image information in the buffer 123; Perhaps reduce the speed that output is temporary in the screen image information in the buffer 123, for example reduce the frame rate of output video, so that buffer 123 can be kept in more screen image information.Behind the screen image information of the reproduction time length that is accumulate to setting, playing module 125 promptly can be exported the screen picture with original broadcasting speed according to the time stamp of each screen image information.
In one embodiment, receiving system 12 can in be built in the display unit 20.Perhaps, receiving system 12 can comprise one first connecting interface 126, and itself and second processing unit 122 electrically connect.Display unit 20 can electrically connect via first connecting interface 126 and receiving system 12.For example, first connecting interface 124 can be a video port; But display unit 20 can be the electronic installation of display frames such as a TV, display or projector.
In one embodiment, receiving system 12 can comprise one second connecting interface 127, and itself and second processing unit 122 electrically connect.Humanization interface device 30 can electrically connect via second connecting interface 127 and receiving system 12, and so, user's humanization interface device 30 that is connected with receiving system 12 capable of using is operated the main frame of far-end.For example, second connecting interface 127 can be a USB interface.According to above-mentioned framework, lack the display unit 20 of input unit, projector for example can let user's may command remote host through being connected with the receiving system that comprises humanization interface device 30 12, for example selects the film of broadcast.
The person of noting, transmitting device 11 also can comprise a first detection module 115, and itself and first processing unit 113 electrically connect.First detection module 115 is the operation in order to the detection user equally, and exports corresponding mode switching signal to receiving system 12, and receiving system 12 promptly switches to corresponding play mode according to the mode switching signal that transmitting device 11 is exported.For example; The user is via the computer of the humanization interface device operation far-end that is connected with receiving system 11; But utilize Wireless Keyboard or wireless mouse to operate; Receiving system 12 still can switch to corresponding play mode according to the mode switching signal that transmitting device 11 is exported, so that preferable instant sense of control to be provided.
Please with reference to Fig. 2, with the screen picture transmission method of explanation one embodiment of the invention.At first, a transmission ends captures a screen image information and is sent to a receiving terminal (S21).Transmission ends or receiving terminal detect a user operation, and output corresponds to a mode switching signal (S22) of an operator scheme or a video mode.Then, receiving terminal receives and keeps in the screen image information that transmission ends transmits, and receiving mode switching signal (S23).Receiving terminal is judged according to mode switching signal should switch to operator scheme or video mode (S24).If switch to video mode, the screen image information (S25) of the temporary longer reproduction time length of receiving terminal, so that transmission ends transmits the screen picture is longer to the time delay that receiving terminal presents the screen picture, and displaying video comparatively glibly.If switch to operator scheme, the screen image information (S26) of the temporary shorter reproduction time length of receiving terminal is so that transmission ends transmission screen picture is shorter to the time delay that receiving terminal presents the screen picture, to let the user that preferable instant sense of control is arranged.At last, the display unit screen image information of keeping in according to receiving terminal upgrades its screen picture (S27).Other specifies with as previously mentioned, repeats no more at this.
Comprehensively above-mentioned, receiving system of the present invention, screen picture transmission system with and transmission method, it is that the operation that detects the user is switched between an operator scheme and a video mode with control system; Wherein when operator scheme; Temporary less screen image information makes the time delay that presents the screen picture shorter, letting the user that preferable instant sense of control is arranged, and when video mode; Temporary more screen image information, and displaying video comparatively glibly.
Above-described embodiment only is for technological thought of the present invention and characteristics are described; Its purpose makes those skilled in the art can understand content of the present invention and is implementing according to this; When can not with qualification claim of the present invention; The equalization of promptly doing according to disclosed spirit generally changes or modifies, and must be encompassed in the claim of the present invention.
Claims (20)
1. a screen picture transmission system is characterized in that, comprises:
One transmitting device, it comprises:
One acquisition module, it is in order to capture a screen image information;
One first communication interface, it sends out in order to convert said screen image information to a communication signal; And
One first processing unit, itself and said acquisition module and said first communication interface electrically connect, and in order to handling said screen image information, and send out via said first communication interface; And
One receiving system, it comprises:
One second communication interface, it is in order to receive said communication signal;
One buffer, it upgrades its screen picture for a display unit according to said screen image information in order to temporary said screen image information;
One second detection module, it is in order to detecting a user operation, and output corresponds to a mode switching signal of an operator scheme or a video mode; And
One second processing unit; Itself and said second communication interface, said buffer and said second detection module electrically connect; Said second processing unit is in order to the said buffer of access; And control said receiving system and switch to said operator scheme or said video mode according to said mode switching signal, wherein, the said screen image information of said buffer temporary one first reproduction time length when said video mode; The said screen image information of temporary one second reproduction time length when said operator scheme, and the said first reproduction time length is greater than the said second reproduction time length.
2. screen picture transmission system as claimed in claim 1 is characterized in that, when switching to said operator scheme, abandons or quicken to export the said screen image information of when said video mode, being kept in.
3. screen picture transmission system as claimed in claim 1; It is characterized in that; When switching to said video mode, suspend output or reduce the speed of the said screen image information of output, and when the said screen image information of the enough said first reproduction time length of accumulation, recover normal output speed.
4. screen picture transmission system as claimed in claim 1 is characterized in that, said second detection module is to detect the input signal of a humanization interface device to judge whether said user operates.
5. screen picture transmission system as claimed in claim 1 is characterized in that, said second detection module does not detect the input signal of a humanization interface device and promptly exports the said mode switching signal corresponding to said video mode in a scheduled time.
6. screen picture transmission system as claimed in claim 1; It is characterized in that; Said receiving system comprises one first connecting interface, and itself and said second processing unit electrically connect, and uses for said display unit to electrically connect via said first connecting interface and said receiving system.
7. screen picture transmission system as claimed in claim 1; It is characterized in that; Said receiving system comprises one second connecting interface, and itself and said second processing unit electrically connect, and uses for a humanization interface device to electrically connect via said second connecting interface and said receiving system.
8. screen picture transmission system as claimed in claim 1; It is characterized in that said transmitting device comprises a first detection module, itself and said first processing unit electrically connect; In order to detecting said user's operation, and export corresponding said mode switching signal to said receiving system.
9. screen picture transmission system as claimed in claim 1 is characterized in that said transmitting device comprises a coding module, and it is electrically connected between said acquisition module and said first processing unit, in order to the said screen image information of encoding.
10. receiving system, itself and a transmitting device are formed a screen picture transmission system, and said transmitting device transmits a communication signal that comprises a screen image information, it is characterized in that said receiving system comprises:
One communication interface, it is in order to receive said communication signal;
One buffer, it upgrades its screen picture for a display unit according to said screen image information in order to temporary said screen image information;
One detection module, it is in order to detecting a user operation, and output corresponds to a mode switching signal of an operator scheme or a video mode; And
One processing unit; Itself and said communication interface, said buffer and said detection module electrically connect; Said processing unit is in order to the said buffer of access; And control said receiving system and switch to said operator scheme or said video mode according to said mode switching signal, wherein, the said screen image information of said buffer temporary one first reproduction time length when said video mode; The said screen image information of temporary one second reproduction time length when said operator scheme, and the said first reproduction time length is greater than the said second reproduction time length.
11. receiving system as claimed in claim 10 is characterized in that, when switching to said operator scheme, and the said screen image information of being kept in when abandoning or quickening to be output in said video mode.
12. receiving system as claimed in claim 10; It is characterized in that; When switching to said video mode, suspend output or reduce the speed of the said screen image information of output, and when the said screen image information of the enough said first reproduction time length of accumulation, recover normal output speed.
13. receiving system as claimed in claim 10 is characterized in that, more comprises one first connecting interface, itself and said processing unit electrically connect, and use for said display unit to electrically connect via said first connecting interface and said receiving system.
14. receiving system as claimed in claim 10 is characterized in that, more comprises one second connecting interface, itself and said processing unit electrically connect, and use for a humanization interface device to electrically connect via said second connecting interface and said receiving system.
15. a screen picture transmission method is characterized in that, comprises:
One transmission ends captures a screen image information and is sent to a receiving terminal;
Detect a user operation, and output corresponds to a mode switching signal of an operator scheme or a video mode;
Said receiving terminal receives and temporary said screen image information, upgrades its screen picture for a display unit according to said screen image information; And
Said receiving terminal switches to said operator scheme or said video mode according to said mode switching signal; Wherein, The said screen image information of temporary one first reproduction time length when said video mode; The said screen image information of temporary one second reproduction time length when said operator scheme, and the said first reproduction time length is greater than the said second reproduction time length.
16. screen picture transmission method as claimed in claim 15 is characterized in that, when switching to said operator scheme, and the said screen image information of being kept in when said receiving terminal abandons or quicken to be output in said video mode.
17. screen picture transmission method as claimed in claim 15; It is characterized in that; When switching to said video mode; Said receiving terminal suspends output or reduces the speed of the said screen image information of output, and when the said screen image information of the enough said first reproduction time length of accumulation, recovers normal output speed.
18. screen picture transmission method as claimed in claim 15 is characterized in that, said detection step is to detect the input signal of a humanization interface device to judge whether said user operates.
19. screen picture transmission method as claimed in claim 15 is characterized in that, said detection step is included in the input signal that does not detect a humanization interface device in the scheduled time and promptly exports the said mode switching signal corresponding to said video mode.
20. screen picture transmission method as claimed in claim 15 is characterized in that, said detection step is by said transmission ends and one of them execution at least of said receiving terminal.
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| CN201010591114.XA CN102547204B (en) | 2010-12-15 | 2010-12-15 | Receiving device, screen picture transmission system and screen picture transmission method |
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| CN201010591114.XA CN102547204B (en) | 2010-12-15 | 2010-12-15 | Receiving device, screen picture transmission system and screen picture transmission method |
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| CN103226453A (en) * | 2013-03-22 | 2013-07-31 | 武汉无懈科技有限责任公司 | Method for mapping display and operation of mobile phone screen to computer terminal |
| CN110609522A (en) * | 2018-06-15 | 2019-12-24 | 虫洞科技股份有限公司 | Machine parameter acquisition device |
| CN112445447A (en) * | 2019-08-27 | 2021-03-05 | 宏正自动科技股份有限公司 | Multi-screen control system |
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| CN1828718A (en) * | 2005-03-01 | 2006-09-06 | 华硕电脑股份有限公司 | Real-time acquisition device for full-screen picture and its method |
| CN101739120A (en) * | 2008-11-12 | 2010-06-16 | 华硕电脑股份有限公司 | Interactive display method and related display device |
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| WO2003043314A1 (en) * | 2001-11-12 | 2003-05-22 | Matsushita Electric Industrial Co., Ltd. | Image pickup apparatus |
| CN1828718A (en) * | 2005-03-01 | 2006-09-06 | 华硕电脑股份有限公司 | Real-time acquisition device for full-screen picture and its method |
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| CN110609522A (en) * | 2018-06-15 | 2019-12-24 | 虫洞科技股份有限公司 | Machine parameter acquisition device |
| CN112445447A (en) * | 2019-08-27 | 2021-03-05 | 宏正自动科技股份有限公司 | Multi-screen control system |
| CN112445447B (en) * | 2019-08-27 | 2024-03-29 | 宏正自动科技股份有限公司 | Multi-screen control system |
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| CN102547204B (en) | 2014-07-16 |
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