CN102394052A - Method for rapid detection of port signal when starting up of display device - Google Patents
Method for rapid detection of port signal when starting up of display device Download PDFInfo
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- CN102394052A CN102394052A CN201110367318XA CN201110367318A CN102394052A CN 102394052 A CN102394052 A CN 102394052A CN 201110367318X A CN201110367318X A CN 201110367318XA CN 201110367318 A CN201110367318 A CN 201110367318A CN 102394052 A CN102394052 A CN 102394052A
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Abstract
The invention relates to a method for rapid detection of a port signal when starting up of a display device. The method is characterized in that: the method is suitable for application to a display device at least having two video signal input ports; after the display device is started, it is firstly detected whether all the ports are connected with video signal wires; if so, video signal detection of the port that is connected with a video signal wire is carried out; if not, the next port is detected. According to the invention, a detection speed of a port signal of a display device itself can be accelerated; reaction time of the display device can be enhanced; and user experience on the market can be improved; and meanwhile, because the detection speed of the display device is accelerated, production efficiency of the display device can also be improved.
Description
Technical field
The port signal method of detecting fast when the present invention relates to a kind of display device starting-up.
Background technology
When display has a plurality of signal input interfaces; Display need be detected each input interface one by one; Define complete signal and just make display action, no signal then jumps to next input port, detects each input port and need spend three second time; For example with the VGA/DVI/HDMI/DP display of totally four interfaces, complete signal cycle detecting time cost 12 seconds.Therefore, existing technology exists following defective: 1, in user's use, because the detecting input signal time is long, cause starting up speed slack-off, it is more to switch input port, can't get into energy saver mode immediately, influences usefulness.2, in the display device processing procedure, each interface signal detecting time is longer, can influence production efficiency, increases production cost.
Summary of the invention
In view of this, the port signal method of detecting fast when the purpose of this invention is to provide a kind of display device starting-up, the time that can effectively improve finished product detection in starting up speed and the production run of multiport display device.
The present invention adopts following scheme to realize: the port signal method of detecting fast during a kind of display device starting-up is characterized in that: be applicable to the display device that has two video signal input terminal mouths at least; Behind this display device starting-up, detect each port earlier and whether be connected to video signal cable,, then carry out the video signal detection of this port if having; If no, then detect next port.
In an embodiment of the present invention, the described vision signal that whether is connected to is to realize through the current potential of detecting port pinout.
In an embodiment of the present invention, the described vision signal that whether is connected to is through an A/D sampling unit magnitude of voltage of port to be detected.
In an embodiment of the present invention, described display device has four video signal input terminal mouths, and it is respectively VGA, DVI, HDMI, DP port.
The present invention can accelerate the speed of display device to the detecting of self port signal, improves the display device reaction time, improves the user experience on the market; Simultaneously, because the display device detecting speeds up, promote the production efficiency of display.
Description of drawings
Fig. 1 is the method realization flow synoptic diagram of the embodiment of the invention.
Embodiment
The port signal method of detecting fast is characterized in that: be applicable to the display device that has two video signal input terminal mouths at least when the present invention provided a kind of display device starting-up; Behind this display device starting-up, detect each port earlier and whether be connected to video signal cable,, then carry out the video signal detection of this port if having; If no, then detect next port.
In the present embodiment; We are example with the display device with four ports, and these four ports are respectively VGA (Video Graphics Array), DVI (digital visual interface), HDMI (HDMI), (successor of DVI adds the support to the transmission of high definition audio signal to the DP port in transmission video signal; Support higher resolution and refresh rate simultaneously); Behind display device starting-up, whether the VGA port of at first detecting display device has video signal cable to insert, if having then continues to judge whether this port has vision signal input; If not then detect next port, and the like.Be noted that above-mentioned detecting order can set as required, it also not only is confined to this.In the present embodiment; Whether the detecting port has video signal cable to insert can be adopted following mode to realize: a kind of is to have judged whether that through the current potential of detecting port pinout signal wire inserts; At the state that does not insert signal wire; Each pin is to be in vacant state, if the incoming video signal line, then each pin can become low level.A kind of is that A/D sampling unit through display device detects the magnitude of voltage of port, if detected value is in the numerical value under the access state, judges that then this port has signal wire to insert.Its software realization flow can be referring to Fig. 1.
The present invention is under the connectionless situation of signal wire, because do not need long-time detecting whether really not have signal, so can improve detecting speed fast; Save time; With the display with above-mentioned four interfaces is example, a complete signal cycle detecting time, can reduce to 1 second by 12 seconds.
Here be noted that and work as display device in use, if current use port is no signal; Need jump to other ports; Method then of the present invention is suitable for too, and when this phenomenon took place, whether display device elder generation detection port was connected to video signal cable; If have, then carry out the video signal detection of this port; If no, then detect next port.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. the port signal method of detecting fast during a display device starting-up is characterized in that: be applicable to the display device that has two video signal input terminal mouths at least; Behind this display device starting-up, detect each port earlier and whether be connected to video signal cable,, then carry out the video signal detection of this port if having; If no, then detect next port.
2. the port signal method of detecting fast during display device starting-up according to claim 1, it is characterized in that: the described vision signal that whether is connected to is to realize through the current potential of detecting port pinout.
3. the port signal method of detecting fast during display device starting-up according to claim 1, it is characterized in that: the described vision signal that whether is connected to is through an A/D sampling unit magnitude of voltage of port to be detected.
4. the port signal method of detecting fast during display device starting-up according to claim 1, it is characterized in that: described display device has four video signal input terminal mouths, and it is respectively VGA, DVI, HDMI, DP port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367318XA CN102394052A (en) | 2011-11-18 | 2011-11-18 | Method for rapid detection of port signal when starting up of display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367318XA CN102394052A (en) | 2011-11-18 | 2011-11-18 | Method for rapid detection of port signal when starting up of display device |
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| CN102394052A true CN102394052A (en) | 2012-03-28 |
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| CN201110367318XA Pending CN102394052A (en) | 2011-11-18 | 2011-11-18 | Method for rapid detection of port signal when starting up of display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035738A (en) * | 2013-03-04 | 2014-09-10 | 联想(北京)有限公司 | Display mode control method and device |
| CN104469353A (en) * | 2014-12-11 | 2015-03-25 | 武汉精测电子技术股份有限公司 | Device for detecting quality of LVDS video signals |
| CN104469351A (en) * | 2014-12-11 | 2015-03-25 | 武汉精测电子技术股份有限公司 | Method for detecting LVDS video signals generated by video source |
| CN108831407A (en) * | 2018-06-26 | 2018-11-16 | 苏州佳世达电通有限公司 | Display controller and its power-economizing method and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1838727A (en) * | 2005-03-21 | 2006-09-27 | 联想(北京)有限公司 | Display equipment and signal source detecting method in display equipment |
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2011
- 2011-11-18 CN CN201110367318XA patent/CN102394052A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1838727A (en) * | 2005-03-21 | 2006-09-27 | 联想(北京)有限公司 | Display equipment and signal source detecting method in display equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035738A (en) * | 2013-03-04 | 2014-09-10 | 联想(北京)有限公司 | Display mode control method and device |
| CN104469353A (en) * | 2014-12-11 | 2015-03-25 | 武汉精测电子技术股份有限公司 | Device for detecting quality of LVDS video signals |
| CN104469351A (en) * | 2014-12-11 | 2015-03-25 | 武汉精测电子技术股份有限公司 | Method for detecting LVDS video signals generated by video source |
| CN108831407A (en) * | 2018-06-26 | 2018-11-16 | 苏州佳世达电通有限公司 | Display controller and its power-economizing method and display device |
| US11042207B2 (en) | 2018-06-26 | 2021-06-22 | Qisda Corporation | Power saving method and display controller capable of optimizing power utilization |
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Application publication date: 20120328 |