CN104052953B - Display and control method thereof - Google Patents
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- CN104052953B CN104052953B CN201410267504.XA CN201410267504A CN104052953B CN 104052953 B CN104052953 B CN 104052953B CN 201410267504 A CN201410267504 A CN 201410267504A CN 104052953 B CN104052953 B CN 104052953B
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Abstract
The invention provides a display and a control method of the display. When an external video signal source is coupled to a video signal connection interface and the external video signal source supplies a vertical synchronization signal to a horizontal synchronization signal connection port, the control end of a first switch is controlled to make the first switch be turned on, and a second resistor is coupled between a low-voltage end and a horizontal synchronization signal route through the first switch so that a first resistor can be connected with the second resistor in parallel. By means of the display and the control method, the display can be compatible with a three-line type external video signal source, a four-line type external video signal source and a five-line type external video signal source only through the single video signal connection interface, and the connection interface of the display is simple.
Description
Technical field
The invention discloses a kind of display and its control method, espespecially one kind can simultaneous and four-wire type exterior video signal source and five lines
The compatible display in formula exterior video signal source and its control method.
Background technology
Display is connected with exterior video signal source (such as video signal player, camera, industrial instrumentation or Medical Instruments etc.) at present
Connect, the species in exterior video signal source can be coordinated, by five-line (R.G.B.H.V.) linkage interface, four-wire type (R.G.B.H+V.) even
Junction face or the connection of three-wire type (R.Gs.B.) linkage interface.Refer to Fig. 1.Fig. 1 is five-line connection common in the art
The schematic diagram at interface 100.The species of linkage interface need to coordinate different types of signal terminal, and Fig. 1 is with BNC (Bayonet
Neill-Concelman) terminal interface as a example by, which is respectively red (R) video signal Port 110, green from left to right
(G) video signal Port 120, blue video signal (B) signal port 130, horizontal synchronization signal Port 140 and vertical synchronization
Signal port 150, to receive red video signal, green video signal, blue video signal, horizontal synchronization signal respectively
(Horizontal synchronization signal；H-sync signal) and vertical synchronizing signal (Vertical
synchronization signal；V-sync signal).Above-mentioned horizontal synchronization signal is to control the scanning of display
Line, and vertical synchronizing signal shown with forming picture frame to converge whole scan line.As seen from Figure 1, the five-line connection on display
Interface can only be coupled to five-line exterior video signal source, and cannot integrate the linkage interface of three-wire type, four-wire type and five-line.For
Display is enable to be connected to three-wire type exterior video signal source or four-wire type exterior video signal source, according to prior art, user and manufacturer
It is forced to use the adapters of various dismounting inconvenience, repeated disassembled and assembled when display is connected to exterior video signal source, or by various connections
Interface is all arranged on display, and causes display interfaces complicated, and area is difficult to reduce.This has resulted in the inconvenience of user,
Also pole is unfavorable for product specification.
The content of the invention
It is an object of the invention to provide a kind of display and its control method, can simultaneous and four-wire type exterior video signal source and five
Wire type exterior video signal source is compatible.
To reach above-mentioned purpose, the technical scheme of the present invention provides a kind of display, comprising：
Video signal linkage interface, comprising：
Red video signal Port, to receive red video signal；
Green video signal Port, to receive green video signal；
Blue video signal Port, to receive blue video signal；
Vertical synchronizing signal Port, to receive vertical synchronizing signal；And
Horizontal synchronization signal Port, to receive horizontal synchronization signal and/or the vertical synchronizing signal；
Internal distribution interface, comprising red video signal end points, green video signal end points, blue video signal end points,
Vertical synchronizing signal end points and horizontal synchronization signal end points；
Red video signal path, comprising：
First end, is coupled to the red video signal end points；And
Second end, is coupled to the red video signal Port；
Green video signal path, comprising：
First end, is coupled to the green video signal end points, and
Second end, is coupled to the green video signal Port；
Blue video signal path, comprising：
First end, is coupled to the blue video signal end points, and
Second end, is coupled to the blue video signal Port；
Vertical synchronizing signal path, comprising：
First end, is coupled to the vertical synchronizing signal end points, and
Second end, is coupled to the vertical synchronizing signal Port；
Horizontal synchronization signal path, comprising：
First end, is coupled to the horizontal synchronization signal end points, and
Second end, is coupled to the horizontal synchronization signal Port；
First resistor, comprising：
First end, is coupled on the horizontal synchronization signal path；And
Second end, is coupled to a low-voltage end；
Second resistance, comprising：
First end, is coupled on the horizontal synchronization signal path；And
Second end；And
First switch, comprising：
First end, is coupled to second end of the second resistance；
Second end, is coupled to the low-voltage end；And
Control end, to control whether the first switch turns on；
Wherein when four-wire type exterior video signal source is coupled to the video signal linkage interface, the four-wire type exterior video signal source provides should
Vertical synchronizing signal is to the horizontal synchronization signal Port, and can turn on the first switch, make the second resistance by this first
Switch is coupled between the low-voltage end and the horizontal synchronization signal path, so that the first resistor is in parallel with the second resistance；
When five-line exterior video signal source couples the video signal linkage interface, the five-line exterior video signal source provides the vertical synchronizing signal extremely
The vertical synchronizing signal Port, and the first switch can be not turned on.
Preferably, the display additionally comprises vertical synchronizing signal detecting module, comprising：
Electric capacity, comprising：
First end；And
Second end, is coupled to the low-voltage end；
3rd resistor, comprising：
First end, is coupled to high voltage end；And
Second end, is coupled to the control end of the first switch；
Diode, comprising：
Anode, is coupled on the vertical synchronizing signal path；And
Negative electrode, is coupled to the first end of the electric capacity；And
Second switch, comprising：
First end, is coupled to second end of the 3rd resistor；
Second end, is coupled to the low-voltage end；And
Control end, is coupled to the negative electrode of the diode.
Preferably, the first switch and the second switch are N-type metal-oxide-semiconductor (MOS) electric crystal.
Preferably, resistance of the resistance of the first resistor much larger than the second resistance.
Preferably, the video signal linkage interface is D-sub video signal linkage interfaces, HD video signal linkage interfaces, DB video signals connection circle
Face or HDB video signal linkage interfaces.
To reach above-mentioned purpose, the second technical scheme of the invention provides a kind of control method of display, the display bag
Linkage interface containing video signal, internal distribution interface, horizontal synchronization signal path, first resistor, second resistance and first switch；This regards
The horizontal synchronization signal Port of news linkage interface is coupled to the water at the inside distribution interface by the horizontal synchronization signal path
Flat sync signal end points, the first resistor are coupled between the horizontal synchronization signal path and low-voltage end, the second resistance coupling
It is connected between the horizontal synchronization signal path and the first end of the first switch, the second end of the first switch is coupled to the low electricity
Pressure side, the method are included：
When four-wire type exterior video signal source couples the video signal linkage interface, and the four-wire type exterior video signal source provides vertical synchronization
When signal is to the horizontal synchronization signal Port, the control end for controlling the first switch turns on the first switch, make this second
Resistance is couple between the low-voltage end and the horizontal synchronization signal path by the first switch so that the first resistor with should
Second resistance is in parallel.
Preferably, the control end for controlling the first switch refers to the first switch conducting：
This is controlled with any one in graphical user interface, toggle switch, IC or single knife switch first to open
The control end closed turns on the first switch.
Preferably, the inside distribution interface further includes vertical synchronizing signal end points, the vertical synchronizing signal end points is by being somebody's turn to do
Vertical synchronizing signal path is coupled to the vertical synchronizing signal Port of the video signal linkage interface, and the display further includes vertical same
Step signal detecting module, what vertical synchronizing signal detecting module was coupled to the vertical synchronizing signal path and the first switch should
Control end, wherein the control end for controlling the first switch refers to the first switch conducting：The vertical synchronizing signal is detected
Module controls the control end of the first switch turns on the first switch.
To reach above-mentioned purpose, the 3rd technical scheme of the invention provides a kind of control method of display, the display bag
Linkage interface containing video signal, internal distribution interface, horizontal synchronization signal path, first resistor, second resistance and first switch；This regards
The horizontal synchronization signal Port of news linkage interface is coupled to the water at the inside distribution interface by the horizontal synchronization signal path
Flat sync signal end points, the first resistor are coupled between the horizontal synchronization signal path and low-voltage end, the second resistance coupling
It is connected between the horizontal synchronization signal path and the first end of the first switch, the second end of the first switch is coupled to the low electricity
Pressure side, the method are included：
When five-line exterior video signal source couples the video signal linkage interface, and the five-line exterior video signal source provides vertical synchronization
During the vertical synchronizing signal Port of signal to the video signal linkage interface, the control end for controlling the first switch makes the first switch
It is not turned on.
Preferably, the control end for controlling the first switch refers to the first switch conducting：
This is controlled with any one in graphical user interface, toggle switch, IC or single knife switch first to open
The control end closed is not turned on the first switch.
Preferably, the inside distribution interface further includes vertical synchronizing signal end points, the vertical synchronizing signal end points is by hanging down
Straight sync signal path is coupled to the vertical synchronizing signal Port of the video signal linkage interface, and the display further includes vertical synchronization
Signal detecting module, the vertical synchronizing signal detecting module are coupled to the control of the vertical synchronizing signal path and the first switch
End processed, wherein the control end for controlling the first switch is not turned on the first switch, it is that the vertical synchronizing signal detects module
The control end for controlling the first switch is not turned on the first switch.
Compare with prior art, by the display and its control method that are disclosed using the embodiment of the present invention, video signal connects
Junction face is compatible in three-wire type exterior video signal source, four-wire type exterior video signal source and five-line exterior video signal source, and will not occur
The incompatible situation of impedance.
Description of the drawings
Fig. 1 is the schematic diagram of five-line linkage interface of the prior art.
Schematic diagrams of the Fig. 2 for the display of the embodiment of the present invention.
Schematic diagrams of the Fig. 3 for the display of another embodiment of the present invention.
Flow charts of the Fig. 4 for the display control method of the embodiment of the present invention.
Specific embodiment
Refer to Fig. 2.Fig. 2 is the schematic diagram of the display 200 that the embodiment of the present invention is disclosed.Fig. 2 is visible, display 200
Comprising video signal linkage interface 210, internal distribution interface 220, red video signal path 281, green video signal path 282,
Blue video signal path 283, vertical synchronizing signal path 284, horizontal synchronization signal path 285, first resistor 291, second
Resistance 292 and first switch 270.Video signal linkage interface 210 is included：Red video signal Port 2101, to receive redness
Video signal；Green video signal Port 2102, to receive green video signal；Blue video signal Port 2103,
To receive blue video signal；Vertical synchronizing signal Port 2104, to receive vertical synchronizing signal；And horizontal synchronization news
Number Port 2105, to receive horizontal synchronization signal and/or vertical synchronizing signal.Internal distribution interface 220 is regarded comprising redness
News signal end points 2201, green video signal end points 2202, blue video signal end points 2203, vertical synchronizing signal end points 2204
And horizontal synchronization signal end points 2205.Red video signal path 281 has first end and the second end, wherein the red video signal news
The first end in number path 281 is coupled to the red video signal end points 2201, the second end coupling in the red video signal path 281
It is connected to the red video signal Port 2101.Green video signal path 282 has first end and the second end, the green video signal
The first end of signal path 282 is coupled to the green video signal end points 2202, and its second end is coupled to the green video signal
Port 2102.Blue video signal path 283 includes first end and the second end, and its first end is coupled to the blue video signal
End points 2203, its second end are coupled to the blue video signal Port 2103.Vertical synchronizing signal path 284 includes first end
With the second end, its first end is coupled to the vertical synchronizing signal end points 2204, and its second end is coupled to the vertical synchronizing signal and connects
Connect port 2104.Horizontal synchronization signal path 285 includes first end and the second end, and its first end is coupled to the horizontal synchronization signal end
Point 2205, its second end is coupled to the horizontal synchronization signal Port 2105.First resistor 291 includes first end and the second end,
Its first end is coupled on the horizontal synchronization signal path 285, and its second end is coupled to low-voltage end.Second resistance 292 includes
First end and the second end, its first end are coupled on the horizontal synchronization signal path 285.First switch 270 include first end,
Two ends and control end, its first end are coupled to the second end of the second resistance 292, and the second end of the first switch 270 is coupled to
The low-voltage end, the control end is to control whether the first switch 270 turns on.
As described above, red video signal Port 2101 is coupled to red video signal by red video signal path 281
Signal end points 2201；Green video signal Port 2102 is coupled to green video signal by green video signal path 282
End points 2202；Blue video signal Port 2103 is coupled to blue video signal end points by blue video signal path 283
2203；Vertical synchronizing signal Port 2104 is coupled to vertical synchronizing signal end points 2204 by vertical synchronizing signal path 284；
And horizontal synchronization signal Port 2105 is coupled to horizontal synchronization signal end points 2205 by horizontal synchronization signal path 285.This
Outward, horizontal synchronization signal path 285 is coupled to low-voltage end, such as ground terminal by first resistor 291.Horizontal synchronization signal path
285 as also shown in Figure 2, is coupled to low-voltage end (for example, ground terminal) by second resistance 292 and first switch 270.Wherein,
The value of one resistance 291 is much larger than second resistance 292, and for example, first resistor 291 may be, for example, the resistance of 2.2k Ω, and the
Two resistance 292 may be, for example, the resistance of 77 Ω.
According to standard criterion, when three-wire type linkage interface receives the signal from three-wire type exterior video signal source, using synchronization
Signal and green signal integrate (sync on green；SOG technology), thus vertical synchronizing signal and horizontal synchronization signal by
Green video signal Port 2102 is received, and is coupled with horizontal synchronization signal Port regardless of vertical synchronizing signal Port
To the resistance value of ground terminal.When five-line linkage interface is received from the signal in five-line exterior video signal source, horizontal synchronization signal
End points need to be coupled to the impedance of about 2.2k Ω to ground terminal.When four-wire type linkage interface receives the news from four-wire type exterior video signal source
Number when, vertical synchronizing signal and horizontal synchronization signal are all received by same end point (for example, horizontal synchronization signal end points), and should
End points need to be coupled to the impedance of about 75 Ω to ground terminal, use as partial pressure.
The embodiment of the present invention according to Fig. 2, when four-wire type exterior video signal source (for example, high-order Medical Instruments) are coupled
When video signal linkage interface 210, four-wire type exterior video signal source can all provide vertical synchronizing signal and horizontal synchronization signal to water
Flat sync signal Port 2105, now according to embodiments of the present invention, can turn on first switch 270, pass through second resistance 292
First switch 270 is coupled to low-voltage end (such as ground terminal) and horizontal synchronization signal path 285 between, so that first resistor 291
It is in parallel with second resistance 292, if first resistor 291 and second resistance 292 to be respectively adopted the impedance of 2.2k Ω and 77 Ω, Jing meters
Calculation can obtain it is in parallel after resistance value be：
(2.2k Ω × 77 Ω)/(+77 Ω of 2.2k Ω)=74.396 Ω ≒, 75 Ω ... ... are (a)
From formula (a), when four-wire type exterior video signal source is connected to the video signal linkage interface 210 of Fig. 2, water is connected to
Resistance value between the horizontal synchronization signal path 285 of flat sync signal Port 2105 and low-voltage end (such as ground terminal) is first
The parallel value of resistance 291 and second resistance 292, its value are about 75 Ω, may conform to standard criterion and just make video signal linkage interface 210
Signal is received often.
When five-line exterior video signal source (for example, audio and video player) couples video signal linkage interface 210, outside five-line
Video signal source is provided vertical synchronizing signal respectively and is interrogated with horizontal synchronization to vertical synchronizing signal Port 2104 with horizontal synchronization signal
Number Port 2105, now according to embodiments of the present invention, is not turned on first switch 270, therefore is connected to horizontal synchronization signal company
The resistance value connect between the horizontal synchronization signal path 285 at port 2105 and low-voltage end (such as ground terminal) is equal to first resistor 291
Value, that is, 2.2k Ω may conform to standard criterion and make video signal linkage interface 210 normally receive signal.
Therefore, the display 200 that the embodiment of the present invention of Fig. 2 is disclosed, only can be compatible to same video signal linkage interface 210
Three-wire type, four-wire type and five-line exterior video signal source, outside for five-line exterior video signal source and four-wire type five-line
Video signal source separately adopts the different video signal linkage interface of adaptor or many sets of configuration.Whether above-mentioned control first switch 270 turns on,
Can control by any one of graphical user interface (GUI), toggle switch, IC, circuit for detecting or single knife switch
The voltage level of the control end of first switch 270, to control whether first switch 270 turns on.
Fig. 3 is refer to, Fig. 3 is the schematic diagram of the display 300 that another embodiment of the present invention is disclosed.
Wherein, video signal linkage interface 300, internal distribution interface 320, red video signal path 381, green video signal
Path 382, blue video signal path 383, vertical synchronizing signal path 384, horizontal synchronization signal path 385, first resistor
391st, second resistance 392, first switch 370, red video signal Port 3101, green video signal Port 3102, indigo plant
Color video signal Port 3103, vertical synchronizing signal Port 3104, horizontal synchronization signal Port 3105, red video signal news
Number end points 3201, green video signal end points 3202, blue video signal end points 3203, vertical synchronizing signal end points 3204 and water
The setting of flat sync signal end points 3205 is same as shown in the embodiment of Fig. 2 with circuit connecting mode, so repeating no more.
Embodiment shown in Fig. 3 additionally comprise vertical synchronizing signal detecting module 330, its include electric capacity 341, diode 351,
3rd resistor 393 and second switch 371.Electric capacity 341 includes first end and the second end, and the second end of the electric capacity 341 is coupled to
The low-voltage end.3rd resistor 393 includes first end and the second end, and the first end of the 3rd resistor 393 is coupled to high voltage end.
Second switch 371 includes first end, the second end and control end, and the first end of the second switch 371 is coupled to the 3rd resistor 393
The second end, the second end of the second switch 371 is coupled to the low-voltage end, and the control end of the second switch 371 is coupled to this
The negative electrode of diode.
Wherein, the anode of diode 351 is coupled to vertical synchronizing signal path 384, and negative electrode is coupled to the first of electric capacity 341
End and the control end of second switch 371；Second end of electric capacity 341 is coupled to low-voltage end (such as ground terminal)；3rd resistor 393
First end is coupled to high voltage end (such as power end), and the second end is coupled to the first end and first switch 370 of second switch 371
Control end；Second end of second switch 371 is then coupled to low-voltage end.Vertical synchronizing signal detects module 330 to detect
The principle of vertical synchronizing signal is：
(1) if having vertical synchronizing signal input vertical synchronizing signal Port 3104, the anode and negative electrode of diode 351
There is cross-pressure therewith, turn on diode 351, and start to charge electric capacity 341, treat that electric capacity 341 charges to the electricity of its first end
Pressure level is sufficiently high, the voltage quasi position of the control end of second switch 371 can be made also sufficiently high and second switch 371 is turned on, now
The control end of first switch 370 is connected to low-voltage end by second switch 371, is not turned on first switch 370, is connected to
The first resistor 391 in horizontal synchronization signal path 385 is not also therefore in parallel with second resistance 392；
(2) if no vertical synchronizing signal input vertical synchronizing signal Port 3104, anode and the moon of diode 351
Pole does not have cross-pressure therewith, is not turned on diode 351, and electric capacity 341 cannot charge, electric capacity 341 first end voltage it is accurate
Position cannot raise, and the voltage quasi position of the control end of second switch 371 is also raised, so as to be not turned on second switch 371, this
When first switch 370 control end high voltage end is connected to by 3rd resistor 393, have the control end of first switch 370
There is the secondary high voltage after partial pressure, and then turn on first switch 370, cause second resistance 392 to be coupled to by first switch 370
Between horizontal synchronization signal path 385 and low-voltage end, the first resistor 391 and in horizontal synchronization signal path 385 is connected to
Two resistance 392 are in parallel therewith.
Above-mentioned situation (1), because of vertical synchronizing signal input vertical synchronizing signal Port 3104, vertical synchronizing signal is detectd
Survey module 330 and can determine whether that its corresponding exterior video signal source belongs to five-line (R.G.B.H.V) exterior video signal source, wherein vertical synchronization
Signal is separately input into horizontal synchronization signal.Above-mentioned situation (2), because of vertical synchronizing signal input level sync signal Port
3105 rather than vertical synchronizing signal Port 3104, vertical synchronizing signal detecting module 330 can determine whether its corresponding exterior video signal
Source belongs to four-wire type (R.G.B.H+V.) exterior video signal source, and wherein vertical synchronizing signal is input into same signal with horizontal synchronization signal
Port.
Please be arranged in pairs or groups Fig. 2 and Fig. 3, and refer to Fig. 4.Flow processs of the Fig. 4 for the display control method 400 of the embodiment of the present invention
Figure, its step are as follows：
Step 401：When exterior video signal source is coupled to video signal linkage interface, whether vertical synchronizing signal is input into to receive
The horizontal synchronization signal Port of horizontal synchronization signalIf so, enter step 402；If it is not, entering step 403；
Step 402：It is judged as four-wire type exterior video signal source, first be coupled between second resistance and low-voltage end opens
Conducting is closed, so that second resistance is connected between horizontal synchronization signal path and low-voltage end, and it is same with level is similarly coupled to
First resistor between step signal path and low-voltage end is in parallel.
Step 403：It is judged as five-line exterior video signal source, first be coupled between second resistance and low-voltage end opens
Pass is not turned on so that second resistance cannot be connected between horizontal synchronization signal path and low-voltage end, so as to be connected to water
First resistor between flat sync signal path and low-voltage end is not in parallel.
The value of the first resistor referred in described above Fig. 2, Fig. 3 and Fig. 4 may be, for example, 2.2k Ω, and the value of second resistance
May be, for example, 75 Ω.By the method for the embodiment of Fig. 4, may achieve same video signal linkage interface and and four-wire type exterior video signal source
The effect compatible with five-line exterior video signal source.
The present invention is applied to the video signal connection such as current industry common D-sub, VGA connector, DB, HDB, HD circle
Face.By taking the D-Sub15 of 15 stitch as an example, its 1st, 2,3,14 and 13 foot position is respectively red video signal Port, and green is regarded
News signal port, blue video signal Port, vertical synchronizing signal Port and horizontal synchronization signal Port, in existing
In technology, because the corresponding horizontal synchronization signal path in four-wire type exterior video signal source it is (same with vertical to receive horizontal synchronization signal
Step signal) the required resistance value (75 Ω) for coupling, it is different from the corresponding horizontal synchronization signal path institute in five-line exterior video signal source
The resistance value (2.2k Ω) that need to be coupled, therefore display user is forced four-wire type exterior video signal source and five-line exterior video signal source
Two sets of video signal linkage interfaces are set, or adopt adaptor, a display can be connected to different exterior video signal source.This is not only
The inconvenience of user is caused, is also increased hardware cost, is unfavorable for commercial specification.Display and control of the Jing using the embodiment of the present invention
Method processed, then only can be compatible to three-wire type, four-wire type and five-line exterior video signal source with single video signal linkage interface, display
Linkage interface can be succinct.If additionally, the display for further being disclosed using such as Fig. 3 embodiments, more can be regarded outside automatic decision
News source four-wire type exterior video signal source or five-line exterior video signal source, and internal driving is automatically regulated to be the work(of conformance with standard specification
Effect.
Total described, the present invention is for the hardware specification of the use experience and improving product for promoting this area user, real
It is helpful.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to the claims in the present invention with repair
Decorations, should all belong to the covering scope of the present invention.
Claims (11)
1. a kind of display, it is characterised in that include：
Video signal linkage interface, comprising：
Red video signal Port, to receive red video signal；
Green video signal Port, to receive green video signal；
Blue video signal Port, to receive blue video signal；
Vertical synchronizing signal Port, to receive vertical synchronizing signal；And
Horizontal synchronization signal Port, to receive horizontal synchronization signal and/or the vertical synchronizing signal；
Internal distribution interface, comprising red video signal end points, green video signal end points, blue video signal end points, vertical
Sync signal end points and horizontal synchronization signal end points；
Red video signal path, comprising：
First end, is coupled to the red video signal end points；And
Second end, is coupled to the red video signal Port；
Green video signal path, comprising：
First end, is coupled to the green video signal end points, and
Second end, is coupled to the green video signal Port；
Blue video signal path, comprising：
First end, is coupled to the blue video signal end points, and
Second end, is coupled to the blue video signal Port；
Vertical synchronizing signal path, comprising：
First end, is coupled to the vertical synchronizing signal end points, and
Second end, is coupled to the vertical synchronizing signal Port；
Horizontal synchronization signal path, comprising：
First end, is coupled to the horizontal synchronization signal end points, and
Second end, is coupled to the horizontal synchronization signal Port；
First resistor, comprising：
First end, is coupled on the horizontal synchronization signal path；And
Second end, is coupled to low-voltage end；
Second resistance, comprising：
First end, is coupled on the horizontal synchronization signal path；And
Second end；And
First switch, comprising：
First end, is coupled to second end of the second resistance；
Second end, is coupled to the low-voltage end；And
Control end, to control whether the first switch turns on；
Wherein when four-wire type exterior video signal source is coupled to the video signal linkage interface, it is vertical that the four-wire type exterior video signal source provides this
Sync signal is to the horizontal synchronization signal Port, and can turn on the first switch, makes the second resistance pass through the first switch
It is coupled between the low-voltage end and the horizontal synchronization signal path, so that the first resistor is in parallel with the second resistance；When five
When wire type exterior video signal source couples the video signal linkage interface, the five-line exterior video signal source provides the vertical synchronizing signal and hangs down to this
Straight sync signal Port, and it is not turned on the first switch.
2. display as claimed in claim 1, it is characterised in that additionally comprise vertical synchronizing signal detecting module, this is vertical same
Step signal detecting module is included：
Electric capacity, comprising：
First end；And
Second end, is coupled to the low-voltage end；
3rd resistor, comprising：
First end, is coupled to high voltage end；And
Second end, is coupled to the control end of the first switch；
Diode, comprising：
Anode, is coupled on the vertical synchronizing signal path；And
Negative electrode, is coupled to the first end of the electric capacity；And
Second switch, comprising：
First end, is coupled to second end of the 3rd resistor；
Second end, is coupled to the low-voltage end；And
Control end, is coupled to the negative electrode of the diode.
3. display as claimed in claim 2, it is characterised in that the first switch and the second switch are that N-type gold oxygen is partly led
Body electric crystal.
4. display as claimed in claim 1, it is characterised in that resistance of the resistance of the first resistor more than the second resistance
Value.
5. display as claimed in claim 1, it is characterised in that the video signal linkage interface is D-sub video signal linkage interfaces, HD
Video signal linkage interface, DB video signals linkage interface or HDB video signal linkage interfaces.
6. a kind of control method of display, it is characterised in that the display comprising video signal linkage interface, internal distribution interface,
Horizontal synchronization signal path, first resistor, second resistance and first switch；The horizontal synchronization signal connection of the video signal linkage interface
Port is coupled to the horizontal synchronization signal end points at the inside distribution interface by the horizontal synchronization signal path, and the first resistor is coupled
Between the horizontal synchronization signal path and low-voltage end, the second resistance be coupled to the horizontal synchronization signal path and this first
Between the first end of switch, the second end of the first switch is coupled to the low-voltage end, and the method is included：
When four-wire type exterior video signal source couples the video signal linkage interface, and the four-wire type exterior video signal source provides vertical synchronizing signal
During to the horizontal synchronization signal Port, the control end for controlling the first switch turns on the first switch, makes the second resistance
Be couple between the low-voltage end and the horizontal synchronization signal path by the first switch so that the first resistor with this second
Resistor coupled in parallel.
7. method as claimed in claim 6, it is characterised in that the control end for controlling the first switch leads the first switch
It is logical to refer to：
The first switch is controlled with any one in graphical user interface, toggle switch, IC or single knife switch
The control end turns on the first switch.
8. method as claimed in claim 6, it is characterised in that the inside distribution interface further includes vertical synchronizing signal end points,
The vertical synchronizing signal end points is connected by the vertical synchronizing signal that the vertical synchronizing signal path is coupled to the video signal linkage interface
Port is connect, the display further includes vertical synchronizing signal detecting module, it is vertical same that the vertical synchronizing signal detecting module is coupled to this
Control end of step signal path and the first switch, wherein the control end for controlling the first switch leads the first switch
It is logical, it is that the control end that the vertical synchronizing signal detecting module controls the first switch turns on the first switch.
9. a kind of control method of display, it is characterised in that the display comprising video signal linkage interface, internal distribution interface,
Horizontal synchronization signal path, first resistor, second resistance and first switch；The horizontal synchronization signal connection of the video signal linkage interface
Port is coupled to the horizontal synchronization signal end points at the inside distribution interface by the horizontal synchronization signal path, and the first resistor is coupled
Between the horizontal synchronization signal path and low-voltage end, the second resistance be coupled to the horizontal synchronization signal path and this first
Between the first end of switch, the second end of the first switch is coupled to the low-voltage end, and the method is included：
When five-line exterior video signal source couples the video signal linkage interface, and the five-line exterior video signal source provides vertical synchronizing signal
To the video signal linkage interface vertical synchronizing signal Port when, the control end for controlling the first switch makes the first switch not lead
It is logical.
10. method as claimed in claim 9, it is characterised in that the control end for controlling the first switch makes the first switch
Conducting is referred to：
The first switch is controlled with any one in graphical user interface, toggle switch, IC or single knife switch
The control end is not turned on the first switch.
11. methods as claimed in claim 9, it is characterised in that the inside distribution interface further includes vertical synchronizing signal end points,
The vertical synchronizing signal end points is coupled to the vertical synchronizing signal connection of the video signal linkage interface by vertical synchronizing signal path
Port, the display further include vertical synchronizing signal detecting module, and the vertical synchronizing signal detecting module is coupled to the vertical synchronization
Control end of signal path and the first switch, wherein the control end for controlling the first switch makes the first switch not lead
It is logical, it is that the control end that the vertical synchronizing signal detecting module controls the first switch is not turned on the first switch.
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| CN201410267504.XA CN104052953B (en) | 2014-06-16 | 2014-06-16 | Display and control method thereof |
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| CN201410267504.XA CN104052953B (en) | 2014-06-16 | 2014-06-16 | Display and control method thereof |
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| CN104052953B true CN104052953B (en) | 2017-04-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200608332A (en) * | 2004-05-25 | 2006-03-01 | Samsung Electronics Co Ltd | Display device |
| WO2008024424A2 (en) * | 2006-08-22 | 2008-02-28 | Rgb Systems, Inc. | Method and apparatus for dc restoration using feedback |
| CN102346616A (en) * | 2010-07-22 | 2012-02-08 | 富士通电子零件有限公司 | Method of detecting position on touchscreen panel, touchscreen panel, and method of initializing touchscreen panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100214381B1 (en) * | 1996-04-16 | 1999-08-02 | 구자홍 | Bnc/d-sub auto-switching circuit for monitor |
| US7796194B2 (en) * | 2006-09-06 | 2010-09-14 | Rgb Systems, Inc. | Automatic video format identification system |
| US8019906B2 (en) * | 2009-02-04 | 2011-09-13 | Via Technologies, Inc. | Dual mode displayport (DP) and high definition multimedia interface (HDMI) transmitter configured to transmit video and/or audio signals in DP or HDMI according to mode signal |
| KR20120082912A (en) * | 2009-10-07 | 2012-07-24 | 렘니스 라이팅 페이턴트 홀딩 비.브이. | Dimmable lighting system |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200608332A (en) * | 2004-05-25 | 2006-03-01 | Samsung Electronics Co Ltd | Display device |
| WO2008024424A2 (en) * | 2006-08-22 | 2008-02-28 | Rgb Systems, Inc. | Method and apparatus for dc restoration using feedback |
| CN102346616A (en) * | 2010-07-22 | 2012-02-08 | 富士通电子零件有限公司 | Method of detecting position on touchscreen panel, touchscreen panel, and method of initializing touchscreen panel |
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