CN106604122B - The control method and device of video screen - Google Patents
The control method and device of video screen Download PDFInfo
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- CN106604122B CN106604122B CN201611160024.9A CN201611160024A CN106604122B CN 106604122 B CN106604122 B CN 106604122B CN 201611160024 A CN201611160024 A CN 201611160024A CN 106604122 B CN106604122 B CN 106604122B
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- 241000208340 Araliaceae Species 0.000 claims description 7
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 7
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- 235000008434 ginseng Nutrition 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of control method of video screen and devices.Control method for video screen includes: to obtain the channel switch request of video screen, includes the information of target channel in channel switch request；According to the preset screen display parameters set of the information searching of target channel, corresponding target screen display parameters are determined；The current screen display parameters of the video screen are switched to target screen display parameters according to channel switch request；Video screen is switched into the target channel.The present invention solves televise during, because the display parameters of video screen interfere with tuner signal and then picture is caused the problem of noise occur, by from preset screen display parameters set search and being switched to the target screen display parameters to match with target channel information, make can automatically switching for video screen parameter in channel switch procedure, it avoids influencing the clarity of television image because occurring noise in picture, program image quality is improved, the user experience is improved.
Description
Technical field
The present embodiments relate to field of display devices, the more particularly, to control method and device of video screen.
Background technique
Progressing greatly for multimedia technology improves requirement of the modern to high image quality image increasingly.And image quality quality with
The noise amount supervened in pick-up image, signal conversion and transmission process has sizable association.
In order to be effectively removed noise to improve image quality, the research eliminated in image processing field about noise
Increasingly it is taken seriously.
Our complete machines (TV) are easy to appear because the display parameters and tuner (tuner) signal of video screen mismatch at present
Lead to occur the problem of noise in picture.
Summary of the invention
The present invention provides the control method and device of a kind of video screen, during solving to televise, because of TV screen
The display parameters of curtain interfere with tuner signal and then lead to occur the problem of noise in picture.
In a first aspect, the embodiment of the invention provides a kind of control methods of video screen, comprising:
The channel switch request of video screen is obtained, includes the information of target channel in the channel switch request；
According to the preset screen display parameters set of the information searching of the target channel, determine that corresponding target screen is aobvious
Show parameter；
The current screen display parameters of the video screen target screen is switched to according to the channel switch request to show
Show parameter；
Video screen is switched into the target channel.
Second aspect, the embodiment of the invention also provides a kind of control device of video screen, which includes:
Switching request obtains module and wraps in the channel switch request for obtaining the channel switch request of video screen
Include the information of target channel；
Target screen display parameters determining module is shown for the preset screen of information searching according to the target channel
Parameter sets determine corresponding target screen display parameters；
Display parameters switching module, for being shown the current screen of the video screen according to the channel switch request
Parameter switching is target screen display parameters；
Channel switching module, for video screen to be switched to the target channel.
The embodiment of the present invention is by from preset screen display parameters set search and being switched in channel switch procedure
The target screen display parameters to match with target channel information, to solve during televising, because of showing for video screen
Showing that parameter and tuner signal are not inconsistent leads to occur the problem of noise in picture, makes video screen parameter in channel switch procedure
It can automatically switch, avoiding influences the clarity of television image because occurring noise in picture, improves program image quality, improves
User experience.
Detailed description of the invention
Fig. 1 is the control method flow diagram of one of the embodiment of the present invention one video screen；
Fig. 2 is the control method flow diagram of one of the embodiment of the present invention two video screen；
Fig. 3 is the controling device structure diagram of one of the embodiment of the present invention three video screen.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of control method flow diagram for video screen that the embodiment of the present invention one provides, and the present embodiment can
The case where controlling when suitable for switching channels video screen, this method can be executed by a kind of control of video screen, should
Device can be realized by the mode of software and/or hardware.As shown in Figure 1, this method comprises:
S110, the channel switch request for obtaining video screen include the information of target channel in the channel switch request；
The channel switch request can be infrared signal, and channel switch request is usually by user's control remote control transmitter
It is issued by infrared emission tube, is received by the infrared receiving terminal of television.
Before the channel switch request for obtaining video screen, television can receive the signal of whole channels；When to wherein one
When a television channel selection plays, the analog signal tuner device of television can carry out signal corresponding with the television channel
The operation such as high-frequency signal amplification and frequency-conversion processing, and then channel information is played by screen.
The information of target channel can be the mark of target channel, and each television channel can have mark and the TV frequency
Road corresponds.Channel switching operation can be completed by sending the identification information of target channel.
S120, the preset screen display parameters set of information searching according to the target channel, determine corresponding target
Screen display parameters；
Target screen display parameters are corresponding with the information of target channel.
Preset screen display parameters set includes that different television channels can be used in the video screen normal play
Screen display parameters.
The setting condition of preset screen display parameters set is also related with the specifications parameter of video screen, such as signal hangs down
Straight parameter (signal vertical section), signal level parameter (signal horizonal section) and signal
Timing parameter (signal clock) etc..Therefore, the corresponding preset screen display parameters of the video screen of different size parameter
Set is different.
When determining target screen display parameters, television can receive the target channel issued by remote control transmitter first
Information, it is then aobvious according to screen in the mark of target channel in the information of target channel and preset screen display parameters set
Show that parameter is matched, and then determines the target screen display parameters.
S130, the current screen display parameters of the video screen are switched to by target screen according to the channel switch request
Curtain display parameters.
The step of channel switching operates and current screen display parameters are switched to target screen display parameters can be simultaneously
It executes, after ensuring that user's switching channels in this way, the video screen image quality watched is still clearly.
S140, video screen is switched into the target channel.
The technical solution of the present embodiment from preset screen display parameters set search and is cut in channel switch procedure
The target screen display parameters to match with target channel information are changed to, allow to regard screen parameter according to the handover operation of channel
It realizes and automatically switches, and then avoid the clarity because occurring noise influence television image in picture, to improve program picture
Matter, the user experience is improved.
Embodiment two
Fig. 2 is the control method flow diagram that one of embodiment of the present invention two is used for video screen, the present embodiment
On the basis of example 1, further the concrete operations of display parameters switching are illustrated, as shown in Fig. 2, this method packet
It includes:
S210, the channel switch request for obtaining video screen include the information of target channel in the channel switch request；
Further, the information of the target channel includes target channel frequency point, and the screen display parameters set includes
Multiple groups screen display parameters, screen display parameters include pixel clock signal.
Target channel frequency point is used to mark the frequency of the signal of target channel, the signal frequency of different target channel frequency point label
Rate value is different.
Pixel clock signal is a very important clock signal, can be all related in the circuit of Digital Signal Processing
Clock signal.The pixel quantity of every a line and the number of pixel clock signal are identical in screen panel, such as 1024 ×
768 screen panel, a line have 1024 pixels, then the number of pixel clock signal is also 1024 in a row.Namely
Say that panel resolution is higher, the frequency of pixel clock signal is also higher.
Pixel clock signal can be used for that digital color signal (RGB) is commanded to transmit in order, and then make digital RGB signal
It is worked normally during driving plate is transferred to screen panel.
S220, according to pixel clock signal corresponding with screen display parameters multiple in screen display parameters set respectively with
The target channel frequency point carries out that at least one difference value is calculated.
In switching channels each time, TV section can get a target channel frequency point, in screen display parameters set
Then include multiple screen display parameters, therefore includes multiple difference values in calculated result.
Specifically, calculating the difference value according to formula MinDiff=Min (ABS (DCLK*n-Feq)), wherein
MinDiff is difference value, and DCLK is pixel clock signal, and Feq indicates that target channel frequency point, DCLK*n indicate pixel clock signal
N times be worth.
Preferably, the value of n is set as the positive integer of 1-15 in formula；Because in the normal propagation range of TV channel signal
Under, target channel frequency point is 15 times of values for not exceeding pixel clock signal.
S230, screen display parameters corresponding with the maximum difference value of value are determined as by target screen according to calculated result
Display parameters.
The difference value is used to detect size of the display parameters of video screen to tuner signal interference degree, difference value
It is bigger, to the smaller of tuner signal interference degree, on the contrary, difference value is smaller, to the bigger of tuner signal interference degree.Cause
This, when will screen display parameters corresponding with the maximum difference value of value be determined as target screen display parameters when, can exchange
Humorous device signal interference is reduced to minimum, thereby reduces the noise of video screen, the video screen for watching user is more clear
It is clear.
S240, output black picture simultaneously close off backlight.
During switching screen display parameters, each parameter in a stack screen display parameters can be carried out more in order
Newly, therefore television image will appear because parameter mismatches the generation discordant state of picture.Therefore, by the current of video screen
Screen display parameters are switched to before target screen display parameters, can allow video screen output black picture and close background first
Light.
The advantages of this arrangement are as follows can hide in switching screen display parameters, the picture that is discord that video screen occurs
It can be hidden, improve user experience.
S250, the current screen display parameters of the video screen are switched to by target screen according to the channel switch request
Curtain display parameters.
S260, output normal pictures open simultaneously backlight.
S270, video screen is switched into the target channel
After the completion of switching, video screen state is restored, export normal pictures and opens bias light, video screen will be defeated
The picture of the target channel of high-quality out.
The technical solution of the present embodiment, by the corresponding pixel clock signal of multiple screen display parameters respectively with mark channel
Multiple difference values are calculated in frequency point, and screen display parameters corresponding with maximum different value are set as current screen display ginseng
Number, is reduced to the display parameters of screen curtain to tuner signal interference degree minimum, thereby reduces the noise of video screen,
The video screen for watching user is more clear, and the user experience is improved.
Embodiment three
Fig. 3 show a kind of controling device structure diagram of video screen of the offer of the embodiment of the present invention three, such as Fig. 3 institute
Show, which includes: that switching request obtains module 310, target screen display parameters determining module
320, display parameters switching module 330 and channel switching module 340.
Wherein, switching request obtains module 310, for obtaining the channel switch request of video screen, the channel switching
It include the information of target channel in request；
Target screen display parameters determining module 320, for the preset screen of information searching according to the target channel
Display parameters set determines corresponding target screen display parameters；
Display parameters switching module 330, for according to the channel switch request by the current screen of the video screen
Display parameters are switched to target screen display parameters.
Channel switching module 340, for video screen to be switched to the target channel.Further, display parameters are cut
Changing the mold block includes:
Black picture output unit simultaneously closes off backlight for output black picture；
Switching action execution unit, for being shown the current screen of the video screen according to the channel switch request
Parameter switching is target screen display parameters；
Normal pictures output unit opens simultaneously backlight for exporting normal pictures.
Further, the information of the target channel includes target channel frequency point, and the screen display parameters set includes
Multiple groups screen display parameters, screen display parameters include pixel clock signal.
Further, the switching action execution unit includes:
Difference value obtains subelement, for according to picture corresponding with screen display parameters multiple in screen display parameters set
Plain clock signal with the target channel frequency point carries out that at least one difference value is calculated respectively；
Target screen display parameters determine subelement, and being used for will be corresponding with the maximum difference value of value according to calculated result
Screen display parameters are determined as target screen display parameters.
Further, the difference value is calculated according to formula MinDiff=Min (ABS (DCLK*n-Feq)), wherein
MinDiff is difference value, and DCLK is pixel clock signal, and Feq indicates that target channel frequency point, DCLK*n indicate pixel clock signal
N times be worth.
The technical solution of the present embodiment from preset screen display parameters set search and is cut in channel switch procedure
The target screen display parameters to match with target channel information are changed to, allow to regard screen parameter according to the handover operation of channel
It realizes and automatically switches, and then avoid the clarity because occurring noise influence television image in picture, improve program image quality, mention
User experience is risen.
The control device of video screen provided by the embodiment of the present invention can be used for executing the embodiment of the present invention and be provided
Video screen control method, have corresponding function and beneficial effect.The technology of detailed description is not thin in the present embodiment
Section, reference can be made to the control method for the video screen that any embodiment of that present invention provides.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (6)
1. a kind of control method of video screen characterized by comprising
The channel switch request of video screen is obtained, includes the information of target channel in the channel switch request；
According to the preset screen display parameters set of the information searching of the target channel, corresponding target screen display ginseng is determined
Number；
The current screen display parameters of the video screen are switched to target screen display ginseng according to the channel switch request
Number；
Video screen is switched into the target channel；
The information of the target channel includes target channel frequency point, and the screen display parameters set includes multiple groups screen display ginseng
Number, screen display parameters include pixel clock signal；
According to the preset screen display parameters set of the information searching of the target channel, corresponding target screen display ginseng is determined
Number, comprising:
According to pixel clock signal corresponding with screen display parameters multiple in screen display parameters set respectively with the target
Channel frequency point carries out that at least one difference value is calculated；
Screen display parameters corresponding with the maximum difference value of value are determined as target screen display parameters according to calculated result.
2. the control method of video screen according to claim 1, which is characterized in that described to be asked according to the channel switching
It asks and the current screen display parameters of the video screen is switched to target screen display parameters, comprising:
Output black picture simultaneously closes off backlight；
The current screen display parameters of the video screen are switched to target screen display ginseng according to the channel switch request
Number；
Output normal pictures open simultaneously backlight.
3. the control method of video screen according to claim 1, it is characterised in that:
The difference value is calculated according to formula MinDiff=Min (ABS (DCLK*n-Feq)), wherein MinDiff is difference value,
DCLK is pixel clock signal, and Feq indicates that target channel frequency point, DCLK*n indicate that n times of pixel clock signal is worth.
4. a kind of control device of video screen characterized by comprising
Switching request obtains module, includes mesh in the channel switch request for obtaining the channel switch request of video screen
Mark the information of channel；
Target screen display parameters determining module, for the preset screen display parameters of information searching according to the target channel
Set, determines corresponding target screen display parameters；
Display parameters switching module, for according to the channel switch request by the current screen display parameters of the video screen
It is switched to target screen display parameters；
Channel switching module, for video screen to be switched to the target channel；
The information of the target channel includes target channel frequency point, and the screen display parameters set includes multiple groups screen display ginseng
Number, screen display parameters include pixel clock signal；
The switching action execution unit includes:
Difference value obtains subelement, is believed according to pixel clock corresponding with screen display parameters multiple in screen display parameters set
It number with the target channel frequency point carries out that at least one difference value is calculated respectively；
Target screen display parameters determine subelement, and being used for will screen corresponding with the maximum difference value of value according to calculated result
Display parameters are determined as target screen display parameters.
5. the control device of video screen according to claim 4, which is characterized in that display parameters switching module includes:
Black picture output unit simultaneously closes off backlight for output black picture；
Switching action execution unit, for according to the channel switch request by the current screen display parameters of the video screen
It is switched to target screen display parameters；
Normal pictures output unit opens simultaneously backlight for exporting normal pictures.
6. the control device of video screen according to claim 4, it is characterised in that:
The difference value is calculated according to formula MinDiff=Min (ABS (DCLK*n-Feq)), wherein MinDiff is difference value,
DCLK is pixel clock signal, and Feq indicates that target channel frequency point, DCLK*n indicate that n times of pixel clock signal is worth.
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| CN201611160024.9A CN106604122B (en) | 2016-12-15 | 2016-12-15 | The control method and device of video screen |
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| CN201611160024.9A CN106604122B (en) | 2016-12-15 | 2016-12-15 | The control method and device of video screen |
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| CN106604122B true CN106604122B (en) | 2019-10-29 |
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| CN111372126B (en) * | 2019-06-27 | 2022-08-05 | 杭州海康威视系统技术有限公司 | Video playing method, device and storage medium |
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| CN1558661A (en) * | 2004-01-17 | 2004-12-29 | 深圳创维－Rgb电子有限公司 | Method for reducing brightness variation during channel change of TV set |
| CN1878249A (en) * | 2005-07-25 | 2006-12-13 | 白峰 | Fade-in fade-out type TV frequency channel switching method |
| CN101043601A (en) * | 2006-03-23 | 2007-09-26 | 康佳集团股份有限公司 | Television program switching circuit |
| CN101547378A (en) * | 2009-05-08 | 2009-09-30 | 四川长虹电器股份有限公司 | Method for improving liquid crystal television definition |
| WO2016167475A1 (en) * | 2015-04-17 | 2016-10-20 | 엘지전자 주식회사 | Method and apparatus for switching input character in wfd |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200820067A (en) * | 2006-10-19 | 2008-05-01 | Benq Corp | Method for controlling power and display parameters of a monitor and monitor for the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558661A (en) * | 2004-01-17 | 2004-12-29 | 深圳创维－Rgb电子有限公司 | Method for reducing brightness variation during channel change of TV set |
| CN1878249A (en) * | 2005-07-25 | 2006-12-13 | 白峰 | Fade-in fade-out type TV frequency channel switching method |
| CN101043601A (en) * | 2006-03-23 | 2007-09-26 | 康佳集团股份有限公司 | Television program switching circuit |
| CN101547378A (en) * | 2009-05-08 | 2009-09-30 | 四川长虹电器股份有限公司 | Method for improving liquid crystal television definition |
| WO2016167475A1 (en) * | 2015-04-17 | 2016-10-20 | 엘지전자 주식회사 | Method and apparatus for switching input character in wfd |
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