CN101094369B - Method for switching display modes of digital TV set - Google Patents
Method for switching display modes of digital TV set Download PDFInfo
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- CN101094369B CN101094369B CN2007102011161A CN200710201116A CN101094369B CN 101094369 B CN101094369 B CN 101094369B CN 2007102011161 A CN2007102011161 A CN 2007102011161A CN 200710201116 A CN200710201116 A CN 200710201116A CN 101094369 B CN101094369 B CN 101094369B
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Abstract
The invention is used for solving the issue that is the currently-used digital TV signals can't well match the TV screen so as to cause bad image quality. The method comprises: a) reading out the image format data from the frame head information of digital TV signals; according to the image format information, identifying the display mode; c) according to identified display mode, setting the display mode of TV set.
Description
Technical field
The present invention relates to digital television techniques, particularly the digital television signal picture format is discerned and processing method automatically.
Background technology
Along with the development of digital television techniques, digital TV products and digital television signal will progressively enter in the lives of the people.There is different picture formats in digital television signal, by the resolution branch two kinds of high definition and single-definitions is arranged; By the score of image length and width have 16: 9 and 4: 3 two kinds.Just there is the television set display mode in this is 16: 9 o'clock, when the display image form is 4: 3 a TV signal, and the phenomenon that image is crushed; Also exist television set to be operated in high-definition mode, when the display image form was the TV signal of single-definition, image was bulk and the low phenomenon of resolution.The digital television of prior art, the user when above-mentioned situation occurring, needs hand-operated forced setting display mode, so that television set display mode and signal pattern format match reach normal display effect in watching the digital television program process.This method has not only increased user's operation burden, also can influence viewing effect.
Summary of the invention
Technical problem to be solved by this invention, be exactly that the do not match picture quality that caused of the digital television signal of pin prior art and video screen is bad or irregular, the user needs the shortcoming of hand-operated forced display mode, provides a kind of digital television signal form to discern and carry out the method for display mode automatic switchover automatically.
The present invention solve the technical problem, and the technical scheme of employing is that method for switching display modes of digital TV set may further comprise the steps:
A. reading images formatted data from the picture frame header of input digit TV signal;
B. according to the image formatted data identification display mode that reads;
C. according to recognition result automatic setting television set display mode.
Further, described image formatted data is a resolution.
Concrete, described resolution is 720 * 576 or 720 * 480 o'clock, described display mode is the single-definition display mode; Described resolution is 1920 * 1080 or 1280 * 1080 o'clock, and described display mode is the high definition display mode.
Further, described image formatted data is the length-width ratio of image.
Concrete, the length-width ratio of described image is 4: 3 o'clock, described display mode is 4: 3 display modes; The length-width ratio of described image is 16: 9 o'clock, and described display mode is 16: 9 display modes.
The invention has the beneficial effects as follows, need not the hand-operated forced display mode of user, simplified operation, improved the television image viewing effect, strengthened the intelligent of digital TV products.
Description of drawings
Fig. 1 is the flow chart of embodiment 1;
Fig. 2 is the flow chart of embodiment 2.
Embodiment
Digital television is formed structure and is comprised: digital tuner, digital television signal processing system (comprising operating system, decoding, controller etc.), FLASH, SDRAM (memory), I/O system, audio frequency and video output and display system etc.In the picture frame header of digital television signal, comprise color mode, color-type (4:2:0/4:2:2/4:4:4), frame per second, the ratio of width to height, scan type (interlacing or line by line), mpeg frame type (I/P/B), resolution etc.After television decoding chip solves the image header signal, give television set according to automatic outputting standard definition of resolution or high-definition image on the one hand, television set is discerned picture format (high definition or SD step definition) and the demonstration that decoding chip is exported automatically.On the other hand, with communication mode the aspect ratio parameter of current digital television signal image is notified to television set CPU, television set is according to the aspect ratio parameter automatic switchover current screen display mode of receiving (4: 3 or 16: 9).
Embodiment 1
Referring to Fig. 1, this example is according to the automatic discriminating digit TV signal of resolution and carries out the flow process that display mode switches.After the digital television system successful operation and searching digital television signal, system will read current demand signal form relevant parameter from the picture frame header, comprising image resolution ratio, picture frame frequency etc.If the current input signal form is 720 * 576 or 720 * 480 etc., system just is identified as current demand signal the single-definition digital television signal automatically, and the television set display mode is switched to the single-definition display mode.Simultaneously, system also can adjust the size of the display position of OSD (on screen display) and character, icon, and received image signal is shown under the display mode of coupling, obtains customer satisfaction system effect.Certainly, if the current demand signal form is 1920 * 1080 or 1280 * 1080 etc., system just is identified as the high definition digital television signal automatically with current demand signal, at this moment system will switch to the high definition display mode to display mode, and the size of adjusting the display position of OSD and character, icon is automatically mated the high definition display mode.Above process is finished under software control automatically by the Digital Television treatment system, does not need the user to remove the manual switchover display mode.
Embodiment 2
Referring to Fig. 2, this example is 4: 3 or 16: 9 digital television signal and the flow process of carrying out corresponding display mode switching for discerning length-width ratio automatically.After the digital television system successful operation and searching digital television signal, system will read the relevant parameter of the every two field picture length-width ratio of current demand signal from the picture frame header.If the length-width ratio of present image is 4: 3, system just is automatically made display mode 4: 3 display modes, if the length-width ratio of display screen is 16: 9, though the blank screen part can appear in the screen both sides, just can avoid like this watching 4: 3 image and phenomenon that image frame is crushed with 16: 9 display screen.If the length-width ratio of present image is 16: 9, system just is automatically made 16: 9 image models with current TV display mode, is displayed in full screen the present image picture.Above process is finished under software control automatically by the Digital Television treatment system, does not need the user to remove the display mode of the different length-width ratios of manual switchover.
Claims (5)
1. method for switching display modes of digital TV set may further comprise the steps:
A. reading images formatted data from the picture frame header of input digit TV signal;
B. according to the image formatted data identification display mode that reads;
C. according to recognition result automatic setting television set display mode.
2. method for switching display modes of digital TV set according to claim 1 is characterized in that, described image formatted data is a resolution.
3. method for switching display modes of digital TV set according to claim 2 is characterized in that, described resolution is 720 * 576 or 720 * 480 o'clock, and described display mode is the single-definition display mode; Described resolution is 1920 * 1080 or 1280 * 1080 o'clock, and described display mode is the high definition display mode.
4. method for switching display modes of digital TV set according to claim 1 is characterized in that, described image formatted data is the length-width ratio of image.
5. method for switching display modes of digital TV set according to claim 4 is characterized in that, the length-width ratio of described image is 4: 3 o'clock, and described display mode is 4: 3 display modes; The length-width ratio of described image is 16: 9 o'clock, and described display mode is 16: 9 display modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102011161A CN101094369B (en) | 2007-07-18 | 2007-07-18 | Method for switching display modes of digital TV set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007102011161A CN101094369B (en) | 2007-07-18 | 2007-07-18 | Method for switching display modes of digital TV set |
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| CN101094369A CN101094369A (en) | 2007-12-26 |
| CN101094369B true CN101094369B (en) | 2010-08-25 |
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| CN2007102011161A Active CN101094369B (en) | 2007-07-18 | 2007-07-18 | Method for switching display modes of digital TV set |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055924B (en) * | 2009-11-11 | 2013-06-26 | 深圳Tcl新技术有限公司 | Method for adjusting proportion mode and television using same |
| CN101778226B (en) * | 2010-01-25 | 2012-05-23 | 深圳市同洲电子股份有限公司 | High-definition image sawtooth-prevention method, device and digital television receiving terminal |
| IT1399695B1 (en) * | 2010-04-14 | 2013-04-26 | Sisvel Technology Srl | METHOD TO DISPLAY A VIDEO FLOW ACCORDING TO A CUSTOMIZED FORMAT. |
| CN102300064A (en) * | 2011-08-30 | 2011-12-28 | 深圳创维－Rgb电子有限公司 | Method for automatically switching picture format of wide screen signaling, television and playing equipment |
| CN102801986B (en) * | 2012-06-15 | 2015-01-21 | 深圳创维－Rgb电子有限公司 | Matching method and device for display color of digital signal image |
| CN103716575A (en) * | 2013-12-11 | 2014-04-09 | 乐视致新电子科技（天津）有限公司 | Display device and display control method capable of adjusting definition |
| CN104916250B (en) * | 2015-06-26 | 2018-03-06 | 合肥鑫晟光电科技有限公司 | A kind of data transmission method and device, display device |
| CN109922366B (en) * | 2019-03-28 | 2021-10-29 | 北京创维海通数字技术有限公司 | Equipment parameter adjusting method, device, equipment and medium |
| CN114051136B (en) * | 2021-11-26 | 2024-02-23 | 四川长虹电器股份有限公司 | Automatic testing method for television picture size |
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| US5243421A (en) * | 1990-10-05 | 1993-09-07 | Hitachi, Ltd. | Signal processor for a wide televison receiver |
| CN1219321A (en) * | 1997-03-12 | 1999-06-09 | 松下电器产业株式会社 | HDTV Downconversion system |
| CN1235477A (en) * | 1998-02-03 | 1999-11-17 | Lg电子株式会社 | Device for converting video format |
| CN1595972A (en) * | 2003-09-11 | 2005-03-16 | 乐金电子（沈阳）有限公司 | Format conversion device |
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|---|---|---|---|---|
| US5243421A (en) * | 1990-10-05 | 1993-09-07 | Hitachi, Ltd. | Signal processor for a wide televison receiver |
| CN1219321A (en) * | 1997-03-12 | 1999-06-09 | 松下电器产业株式会社 | HDTV Downconversion system |
| CN1235477A (en) * | 1998-02-03 | 1999-11-17 | Lg电子株式会社 | Device for converting video format |
| CN1595972A (en) * | 2003-09-11 | 2005-03-16 | 乐金电子（沈阳）有限公司 | Format conversion device |
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