CN101742360B - Display equipment capable of identifying standard color bar signals and identification method used by same - Google Patents
Display equipment capable of identifying standard color bar signals and identification method used by same Download PDFInfo
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Abstract
The invention discloses display equipment capable of identifying standard color bar signals and identification method used by the same. A video image captured by an image processing chip is stored by using a high-speed random-access memory. The invention is characterized in that the display equipment has a standard color bar signal database, wherein eight colors of color bars are respectively defined in the standard color bar signal database and corresponded to relative positions in the video image, and corresponding signal values of red, green and blue components or Y, U and V components of the relative positions in the video image are also defined; the method comprises the following steps of: respectively reading the values of the red, green and blue components or the Y, U and V components at the relative positions in the video image in the high-sped random-access memory and comparing the values with values of corresponding components in the standard color bar signal database one by one; if the values are the same, judging that signals displayed on the display equipment are standard color bar signals; and if the values are not the same, judging that the displayed signals are non standard color bar signals. The invention can conveniently prompt the kind of the color bar signals to users.
Description
Technical field the present invention relates to a kind of display device of energy criterion of identification color bar signal and the recognition methods of use thereof.
The background technology standard color-bar signal has multiple, for example: 100/0/75/0 colour bar (100% saturation, 75% amplitude), 100/0/100/0 colour bar (100% saturation, 75% amplitude), 100/0/100/25 (is 95% saturation and 100 amplitudes when Y=2.2, it is 98% saturation when Y=2.8,100% amplitude) etc., China's television standard is defined in the transmission of TV signal, unified 100/0/75/0 color bar signal of using in transmission and the magnetic tape recording.Therefore, the making of TV signal and sender, the recording side of tape is exactly a necessary process to detection, the identification of this color bar signal.The present invention utilizes display device (such as the monitor of TV station through broadcasting and TV field commonly used) to realize the detection and Identification to these color bar signals exactly.The present invention is mainly used in vision signal monitoring, and the fields such as control are such as TV station etc.
Summary of the invention the object of the invention is to disclose a kind of display device of energy criterion of identification color bar signal and the recognition methods of use thereof.
The invention discloses a kind of display device of energy criterion of identification color bar signal, the video image that uses high speed random asccess memory memory image process chip to catch, has the standard color-bar signal database, defined respectively the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database, and the signal value of corresponding red, green, blue component or Y, U, V component on the relative position in described video image; Read in respectively the value of red, green, blue component corresponding on the relative position in the described video image in the described high speed random asccess memory or Y, U, V component, and with described standard color-bar signal database in the respectively one by one contrast of value of respective components, identical then judge show on the described display device for standard color-bar signal, not identically then be judged as non-standard color bar signal.
The invention also discloses a kind of recognition methods of display device use of energy criterion of identification color bar signal, the video image that uses high speed random asccess memory memory image process chip to catch, the first step, Criterion color bar signal database, defined respectively the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database, and the signal value of corresponding red, green, blue component or Y, U, V component on the position in described video image; Second step, read respectively position correspondence in the described video image described red, green, blue component in described high speed random asccess memory or the value of Y, U, V component, and with described standard color-bar signal database in the value of respective components contrast one by one, identical then is standard color-bar signal, and not identical then is non-standard color bar signal.
Above-mentioned can criterion of identification in the recognition methods of the display device of color bar signal and use thereof, also have following subordinate technical characterictic:
Defined respectively the span of the signal value of red, green, blue component corresponding to the color bar signal of described eight kinds of colors or Y, U, V component in the described standard color-bar signal database, the color bar signal that signal value all drops in the described span is judged as standard color-bar signal.
The data that comprise more than one standard color-bar signal in the described standard color-bar signal database; The color bar signal that shows on the described display device respectively with described more than one standard color-bar signal contrast, all not identically just be judged as non-standard color bar signal.
The present invention is the kind of prompting user color bar signal easily, and realizing simply need not increase any hardware cost, as long as basically can realize this function with the display device of DDR.In the broadcasting and TV field, good application prospect is arranged.
Description of drawings
Fig. 1 is the flow chart of Criterion color bar signal database.
Fig. 2 is the flow chart of criterion of identification color bar signal.
Embodiment is described in further details the present invention below in conjunction with the drawings and specific embodiments.
Along with the development of memory technology, existing display device is all with the DDR memory.The DDR memory is the abbreviation of DDR SDRAM, is the abbreviation of Double Data Rate SDRAM, is the meaning of high speed random asccess memory.Although be that DDR is most widely used general at present, the present invention does not limit display device must use DDR, we directly are called the high speed random asccess memory.
Color bar signal can be video tape recorder, DVD, and antenna etc. sends.Color bar signal color from left to right is white, Huang, and green grass or young crops, green, product, red, indigo plant, black, attach ratios also has regulation.
Different color bar signals has different standards, the below lists the normal data of three kinds of color bar signals take the form of form: table one is the data of 100/0/100/0 color bar signal, table two is the data of 100/0/100/25 color bar signal, and table three is the data of 100/0/75/0 color bar signal.Definition 1.0 is level corresponding to informal voucher in the table, and 0 is level corresponding to secret note, other as reference.
Table one:
| Color code signal | R | G | B | Y | R-Y | B-Y |
| In vain | 1.0 | 1.0 | 1.0 | 1.0 | 0 | 0 |
| Yellow | 1.0 | 1.0 | 0 | 0.89 | 0.11 | -0.89 |
| Blue or green | 0 | 1.0 | 1.0 | 0.70 | -0.70 | 0.30 |
| Green | 0 | 1.0 | 0 | 0.59 | -0.59 | -0.59 |
| Product | 1.0 | 0 | 1.0 | 0.41 | 0.59 | 0.59 |
| Red | 1.0 | 0 | 0 | 0.30 | 0.70 | -0.30 |
| Blue | 0 | 0 | 1.0 | 0.11 | -0.11 | 0.89 |
| Black | 0 | 0 | 0 | 0 | 0 | 0 |
Table two:
| Color code signal | R | G | B | Y | R-Y | B-Y |
| In vain | 1.0 | 1.0 | 1.0 | 1.0 | 0 | 0 |
| Yellow | 1.0 | 1.0 | 0.25 | 0.91 | 0.09 | -0.66 |
| Blue or green | 0.25 | 1.0 | 1.0 | 0.78 | -0.53 | 0.22 |
| Green | 0.25 | 1.0 | 0.25 | 0.69 | -0.44 | -0.44 |
| Product | 1.0 | 0.25 | 1.0 | 0.56 | 0.44 | 0.44 |
| Red | 1.0 | 0.25 | 0.25 | 0.47 | 0.53 | -0.22 |
| Blue | 0.25 | 0.25 | 1.0 | 0.34 | -0.09 | 0.66 |
| Black | 0 | 0 | 0 | 0 | 0 | 0 |
Table three:
| Color code signal | R | G | B | Y | R-Y | B-Y |
| In vain | 1.0 | 1.0 | 1.0 | 1.0 | 0 | 0 |
| Yellow | 0.75 | 0.75 | 0 | 0.66 | 0.09 | -0.66 |
| Blue or green | 0 | 0.75 | 0.75 | 0.53 | -0.53 | 0.22 |
| Green | 0 | 0.75 | 0 | 0.44 | -0.44 | -0.44 |
| Product | 0.75 | 0 | 0.75 | 0.31 | 0.44 | 0.44 |
| Red | 0.75 | 0 | 0 | 0.22 | 0.53 | -0.22 |
| Blue | 0 | 0 | 0.75 | 0.09 | -0.09 | 0.66 |
| Black | 0 | 0 | 0 | 0 | 0 | 0 |
From the data of table one, table two and table three, can find out, the R of three kinds of color bar signals (red), G (green), B (orchid), Y (Huang), U (U=B-Y, Huang Lanse), and V (V=R-Y, reddish yellow) all have difference more or less, therefore, we can judge, identify according to the difference of these data the kind of color bar signal.
At present, the application of DDR in display unit is quite extensive, generally is used for the video image that the memory image process chip catches, therefore, be stored in the R of the color bar signal among the DDR after can catching according to image processing ics, G, B or Y, U, the value of V detects and distinguishes the kind of color bar signal.
Following emphasis is told about and is realized principle and flow process.Be the flow chart of Criterion color bar signal database in display device as shown in Figure 1, comprise the steps:
The first step: definition is white, Huang, and green grass or young crops, green, product, red, indigo plant, black eight kinds of color corresponding positions in the video image of this display device.
Second step: input respectively several standard colour bar vision signals, these several color bar signals have been confirmed to be the color bar signal of standard.
The 3rd step: by in vain, Huang, green grass or young crops, green, product, red, indigo plant, black eight kinds of colors are the mapping of corresponding position in video image, finds the R of eight kinds of colors correspondence in DDR, G, B or Y, U, the value of V, these values are video image Direct Acquisitions, and do not pass through luminance raising, colourity promotes, GAMMA correction etc. image processing.
The 4th step: with the R that reads, G, B or Y, U, V is as the reference value of every kind of color bar signal, and deviate is set, this is because of can not talkative every kind of color bar signal all being very standard, particularly analog signal, and level always has some slight errors, as long as in this deviate, all can think standard color-bar signal.With reference to value, deviate writes code.
Be after having set up the standard color-bar signal database as shown in Figure 2, display device is realized the flow process of color bar signal measuring ability automatically with software:
The first step: input needs the color bar signal of detection.Behind the image stability to be entered, begin to detect.
Second step: by the mapping of eight kinds of color positions in video image, find R corresponding among the DDR, G, B or Y, U, the value of V.
The 3rd step: the reference value of the standard color-bar signal of these values and the setting of software Plays color bar signal database is contrasted one by one, allow simultaneously rational deviate, judge it is which kind of standard color-bar signal according to comparing result, if can not find standard color-bar signal, then think non-standard color bar signal.
The 4th step: by demonstration information, prompting client testing result.
In (chromoscope) epoch of CRT in early days, because physical characteristic, television set can not receive the colour signal of 100% amplitude, therefore, regulation was being recorded tape, disk afterwards, when playing TV signal etc., can only play 75% colour signal, therefore, before playing these signals, the capital is broadcast one section color bar signal with display device and is detected, looks at that whether normal (some TV station uses that oscilloscope detects for the color bar signal exported.
The alleged display device of the present invention can be the display device (monitor that TV station uses) of test signal, also can be the display device (television set of normal domestic) of receiving terminal.By TV station, the test signal of a period of time all can be put in TV station before transmitting, and just comprises color bar signal (seeing the whether color bar signal of Chinese Industrial Standards (CIS) of color bar signal) in the test signal.
Claims (6)
1. the display device of an energy criterion of identification color bar signal, the video image that uses high speed random asccess memory memory image process chip to catch, it is characterized in that, has the standard color-bar signal database, defined respectively the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database, and the signal value of corresponding red, green, blue component or Y, U, V component on the relative position in described video image; Read in respectively the value of red, green, blue component corresponding on the relative position in the described video image in the described high speed random asccess memory or Y, U, V component, and with described standard color-bar signal database in the respectively one by one contrast of value of respective components, identical then judge show on the described display device for standard color-bar signal, not identically then be judged as non-standard color bar signal;
Set up described standard color-bar signal database and comprise the steps: the first step: definition is white, Huang, and green grass or young crops, green, product, red, indigo plant, black eight kinds of color corresponding positions in the video image of this display device; Second step: input respectively several standard colour bar vision signals; The 3rd step: by in vain, Huang, green grass or young crops, green, product, red, indigo plant, black eight kinds of colors are the mapping of corresponding position in video image, finds eight kinds of colors corresponding red in the high speed random asccess memory, green, indigo plant or Y, U, the value of V, these values are video image Direct Acquisitions, and do not process through image; The 4th step: with red, green, blue or the Y that reads, U, V is as the reference value of every kind of color bar signal and deviate is set, and writes code with reference to value and deviate.
According to claim 1 can criterion of identification the display device of color bar signal, it is characterized in that, defined respectively the span of the signal value of red, green, blue component corresponding to the color bar signal of described eight kinds of colors or Y, U, V component in the described standard color-bar signal database, the color bar signal that signal value all drops in the described span is judged as standard color-bar signal.
3. the display device of energy criterion of identification color bar signal according to claim 2 is characterized in that, comprises the data of more than one standard color-bar signal in the described standard color-bar signal database; The color bar signal that shows on the described display device respectively with described more than one standard color-bar signal contrast, all not identically just be judged as non-standard color bar signal.
4. the recognition methods of the display device of energy criterion of identification color bar signal use, the video image that uses high speed random asccess memory memory image process chip to catch, it is characterized in that, the first step, Criterion color bar signal database, defined respectively the relative position of colour bar correspondence in described video image of eight kinds of colors in the described standard color-bar signal database, and the signal value of corresponding red, green, blue component or Y, U, V component on the position in described video image; Second step, read respectively position correspondence in the described video image described red, green, blue component in described high speed random asccess memory or the value of Y, U, V component, and with described standard color-bar signal database in the value of respective components contrast one by one, identical then is standard color-bar signal, and not identical then is non-standard color bar signal;
Set up described standard color-bar signal database and comprise the steps: the first step: definition is white, Huang, and green grass or young crops, green, product, red, indigo plant, black eight kinds of color corresponding positions in the video image of this display device; Second step: input respectively several standard colour bar vision signals; The 3rd step: by in vain, Huang, green grass or young crops, green, product, red, indigo plant, black eight kinds of colors are the mapping of corresponding position in video image, finds eight kinds of colors corresponding red in the high speed random asccess memory, green, indigo plant or Y, U, the value of V, these values are video image Direct Acquisitions, and do not process through image; The 4th step: with red, green, blue or the Y that reads, U, V is as the reference value of every kind of color bar signal and deviate is set, and writes code with reference to value and deviate.
5. the recognition methods of the display device use of energy criterion of identification color bar signal according to claim 4, it is characterized in that, defined respectively the span of the signal value of red, green, blue component corresponding to the color bar signal of described eight kinds of colors or Y, U, V component in the described standard color-bar signal database in the described first step; In the described second step, the color bar signal of only having signal value all to drop in described span is judged as standard color-bar signal.
6. the recognition methods of the display device use of energy criterion of identification color bar signal according to claim 4 is characterized in that, comprises the data of more than one standard color-bar signal in the described standard color-bar signal database in the described first step; The color bar signal that shows on the display device described in the described second step respectively with described more than one standard color-bar signal contrast, all not identically just be judged as non-standard color bar signal.
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| CN110010044A (en) * | 2019-04-02 | 2019-07-12 | 上海帆声图像科技有限公司 | It is a kind of to show the display detection method of equipment, apparatus and system |
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| US4706108A (en) * | 1985-04-12 | 1987-11-10 | Sony Corporation | Automatic setup system for controlling color gain, hue and white balance of TV monitor |
| US4914506A (en) * | 1989-04-24 | 1990-04-03 | Tektronix, Inc. | Component color bar alignment test signal |
| CN1705380A (en) * | 2004-05-31 | 2005-12-07 | 光道视觉科技股份有限公司 | Video detection device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706108A (en) * | 1985-04-12 | 1987-11-10 | Sony Corporation | Automatic setup system for controlling color gain, hue and white balance of TV monitor |
| US4914506A (en) * | 1989-04-24 | 1990-04-03 | Tektronix, Inc. | Component color bar alignment test signal |
| CN1705380A (en) * | 2004-05-31 | 2005-12-07 | 光道视觉科技股份有限公司 | Video detection device |
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| JP特开平10-178647A 1998.06.30 |
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