CN1956548A - Image process method and device for image display instrument - Google Patents
Image process method and device for image display instrument Download PDFInfo
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- CN1956548A CN1956548A CN 200510017236 CN200510017236A CN1956548A CN 1956548 A CN1956548 A CN 1956548A CN 200510017236 CN200510017236 CN 200510017236 CN 200510017236 A CN200510017236 A CN 200510017236A CN 1956548 A CN1956548 A CN 1956548A
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Abstract
This invention relates to an image process method and a device for image display device, in which, the image process method includes two steps: 1, receiving APL and RGB values, 2, regulating the level of the RGB data based on the APL value, the image process device includes a Y/C conversion part, a decoder, an AD conversion part, a consult list, a data rearranging part and a control part, which regulates the level of color signals based on the APL so as to solve the problem that menu is hardly to be recognized due to the over too high level of color signals under the state of low grayness or over too low level of the color signals at the state of high grayness.
Description
Technical field
The present invention relates to image display apparatus, particularly relate to the image processing method and the device thereof of image display apparatus.
Background technology
In general, plasma (PDP) TV is after being transfused to the analog composite picture signal, will be separated into red/green/blue input pattern (RGB) and level, the vertical synchronization signal, and after having obtained the average intensity level that is equivalent to grey scale signal mean value, in order to improve the brightness of PDPTV, it to be transformed to according to the sample timer of defined, the numerical data of N position, numerical data after will changing then is depicted as data and the output that is consistent with the brightness of PDP, these data are handled in order to realize harmony, for instance the view data in a field is used from upper position (MSB) the next (LSB) a plurality of alternative field that shortens gradually of holding time to reconstruct, thereby it is stored in the fuselage memory, and then the data driver that provides it to panel board one side is brought in and is demonstrated.
At this moment, what average intensity level (APL) was represented is the mean flow rate in 1H interval in the video grey scale signal, thereby along with the form of the vision signal of being imported can have nothing in common with each other.
Yet because the level of above-mentioned APL and colour signal is not corresponding, therefore compare with APL under the situation of wanting relatively low, will show the picture of light tone in the level of colour signal; And compare with APL under the relative condition with higher in the level of colour signal, will show the picture of dark tone.
This can cause the level of colour signal under the lower state of gray scale too high, and when perhaps the level of colour signal was too low under the higher state of gray scale, the problem that understanding itself encounters difficulties appearred in picture easily.
Therefore in the past, the level of colour signal is too high under the lower state of gray scale, and perhaps the level of colour signal is too low and the problem that is drawn in that demonstration that cause can't be discerned has become one to be badly in need of the problem of technological development to solve under the higher state of gray scale.
Summary of the invention
The objective of the invention is to, by adjust the level of colour signal according to APL, the level of colour signal is too high under the lower state of gray scale, or when the level of colour signal is crossed initiation picture such as low and is familiar with unclear problem under the higher state of gray scale, soluble image processing method and device are proposed.
The objective of the invention is to be achieved through the following technical solutions:
Image display apparatus treatment of picture method was made up of two stages, and the phase I, second stage was for to adjust the level of above-mentioned RGB data according to above-mentioned APL value in order to receive APL value and RGB data.
Whether too high described second stage was made of two stages: under the low-down state of above-mentioned APL value, detect level the stage of above-mentioned RGB data; And under the low-down state of above-mentioned APL value,, just reduce the stage of the level of above-mentioned RGB data if the level of above-mentioned RGB data is too high.
Under the very high state of above-mentioned APL value, detect the whether low excessively stage of level of above-mentioned RGB data; And under the very high state of above-mentioned APL value,, just improve the stage of the level of above-mentioned RGB data if the level of above-mentioned RGB data is low excessively.
Image display apparatus treatment of picture device possesses with the lower part:
Receive composite picture signal, be separated into the Y/C converter section of grey scale signal and colour signal then;
Above-mentioned colour signal is transformed to the RGB data, and from above-mentioned grey scale signal, calculates the decoder of APL value;
The AD converter section that each signal that above-mentioned decoder is exported carries out the AD conversion;
The look-up table that the RGB data adjusted value of foundation APL value is stored;
The data that the RGB data of above-mentioned AD converter section being sent according to the data adjusted value of above-mentioned look-up table are adjusted are aligning section again;
And the variable control part of RGB data adjusted value that makes above-mentioned look-up table according to above-mentioned APL value.
Described control part can change above-mentioned RGB data adjusted value, so that under the low-down state of above-mentioned APL value, if the level of above-mentioned RGB data is crossed the level that the higher position reduces above-mentioned colour signal; And under the very high state of above-mentioned APL value,, just improve the level of above-mentioned colour signal if the level of RGB data is low excessively.
Advantage of the present invention and effect are:
As mentioned above, the present invention adjusts the level of colour signal according to APL, thereby the level that has solved colour signal under the lower state of gray scale is too high, and perhaps the level of colour signal is crossed low and the picture that causes can't cognitive problem under the higher state of gray scale, and this is its advantage place just.
Description of drawings
Fig. 1 is the summary pie graph of the image disply of the effective embodiment of the present invention;
Fig. 2 is the flow chart of the image processing method of the effective embodiment of the present invention.
Critical piece symbol among the figure:
100:Y/C converter section 110: decoder
211: the 1A/D transformation components of 120:A/D transformation component
122: the 2A/D transformation components 130: data are aligning section again
140: look-up table 150: control part
160: storage part
Specific embodiments
What Fig. 1 showed is the summary pie graph of the image display apparatus of foundation effective embodiment of the present invention, and aligning section (130), look-up table (140), control part (150) and storage part (160) constitute again by grey scale signal (Y)/colour signal (C) converter section (100), decoder (110), A/D transformation component (120), data.
Above-mentioned Y/C converter section (100) is isolated grey scale signal (Y) and colour signal (C) to offer decoder (110) from the composite picture signal of being imported.Above-mentioned decoder (110) the APL value of the grey scale signal that is provided at Y/C converter section (100) is provided out and offers 2A/D transformation component (122), and at last colour signal being restored is that rgb signal is to offer 1A/D transformation component (121).
At this moment, 1A/D transformation component (121) utilizes the outside set sample timer that provides that the rgb signal that decoder (110) is provided is converted to data-signal, then the RGB data after the conversion is offered data aligning section (130) and control part (150) again; 2A/D transformation component (122) utilizes the sample timer of regulation that the APL value that decoder (110) is provided is taken a sample, and offers above-mentioned data aligning section (130) and control part (150) more again with the numerical data that it is transformed to predetermined bits.That is to say that 1A/D transformation component (121) utilizes the sample timer of regulation that decoder (110) rgb signal that is provided is converted to 8 numerical data, offers data aligning section (130) and control part (150) more again; And the APL value that 2A/D transformation component (122) utilizes the sample timer of regulation that decoder (110) is provided is converted to 8 numerical data, offers data aligning section (130) and control part (150) more again.
Above-mentioned data aligning section (130) again utilize that look-up table (140) is provided 1A/D transformation component (121), as to pass through the RGB of digital conversion brightness to control, and offer data driver.Be data again aligning section (130) the corresponding brightness value of digital conversion value of the APL value that is provided with 2A/D transformation component (122) is provided from look-up table (140), and then the brilliance control of the RGB data that 1A/D transformation component (121) is provided with the corresponding brightness of the value that is retrieved on, offer data driver again.
Above-mentioned look-up table (140) is under the control of control part (150), and storage is the digital conversion value of purpose with the brightness of adjusting the RGB data that 1A/D transformation component (121) provided.Above-mentioned control part (150) can not only be controlled above-mentioned image display apparatus comprehensively, according to effective embodiment of the present invention as can be known, it can also come to reduce at low excessively APL value the level of colour signal by the digital conversion value of adjusting above-mentioned look-up table (140), or improves the level of colour signal at too high APL value.
Store the multiple information of the handling procedure that comprises above-mentioned control part (150) in the above-mentioned in addition storage part (160).
We come to describe going for image processing method above-mentioned image display apparatus, in effective example of the present invention with reference to the flow chart of Fig. 2 now.
Above-mentioned composite picture signal receives from the outside, and above-mentioned control part (150) receives APL and RGB data (204) stage from decoder (110).
Above-mentioned control part (150) is if received APL and colour signal, whether the level that will detect colour signal under the low-down state of above-mentioned APL is too high, or whether the level of above-mentioned colour signal is low excessively under the very high state of above-mentioned APL, and promptly whether the digital conversion value of look-up table (140) needs to adjust (206) stage.
If under the low-down state of above-mentioned APL, the level of RGB data is too high, or under the very high state of above-mentioned APL, the level of RGB data is low excessively, above-mentioned control part (150) just can be adjusted reducing the level of above-mentioned RGB data the digital conversion value of above-mentioned look-up table (140), or improves adjustment level (208) stage of RGB data.
Claims (5)
1. the image processing method of image display apparatus is characterized in that being made up of two stages, and the phase I, second stage was for to adjust the level of above-mentioned RGB data according to above-mentioned APL value in order to receive APL value and RGB data.
2. whether too high treatment of picture method as claimed in claim 1 is characterized in that described second stage was made of two stages: under the low-down state of above-mentioned APL value, detect level the stage of above-mentioned RGB data; And under the low-down state of above-mentioned APL value,, just reduce the stage of the level of above-mentioned RGB data if the level of above-mentioned RGB data is too high.
3. whether low excessively treatment of picture method as claimed in claim 1 is characterized in that under the very high state of above-mentioned APL value, detect level the stage of above-mentioned RGB data; And under the very high state of above-mentioned APL value,, just improve the stage of the level of above-mentioned RGB data if the level of above-mentioned RGB data is low excessively.
4. image display apparatus treatment of picture device is characterized in that possessing with the lower part:
Receive composite picture signal, be separated into the Y/C converter section of grey scale signal and colour signal then;
Above-mentioned colour signal is transformed to the RGB data, and from above-mentioned grey scale signal, calculates the decoder of APL value;
The AD converter section that each signal that above-mentioned decoder is exported carries out the AD conversion;
The look-up table that the RGB data adjusted value of foundation APL value is stored;
The data that the RGB data of above-mentioned AD converter section being sent according to the data adjusted value of above-mentioned look-up table are adjusted are aligning section again;
And the variable control part of RGB data adjusted value that makes above-mentioned look-up table according to above-mentioned APL value.
5. treatment of picture device as claimed in claim 4 is characterized in that control part can change above-mentioned RGB data adjusted value, so that under the low-down state of above-mentioned APL value, if the level of above-mentioned RGB data is crossed the level that the higher position reduces above-mentioned colour signal; And under the very high state of above-mentioned APL value,, just improve the level of above-mentioned colour signal if the level of RGB data is low excessively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017236 CN1956548A (en) | 2005-10-28 | 2005-10-28 | Image process method and device for image display instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017236 CN1956548A (en) | 2005-10-28 | 2005-10-28 | Image process method and device for image display instrument |
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| Publication Number | Publication Date |
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| CN1956548A true CN1956548A (en) | 2007-05-02 |
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| CN 200510017236 Pending CN1956548A (en) | 2005-10-28 | 2005-10-28 | Image process method and device for image display instrument |
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Effective date of registration: 20070420 Address after: No. 77 Hengtong Road, Nanjing economic and Technological Development Zone, Jiangsu Applicant after: LG Electronics (Nanjing) Plasma Co., Ltd. Address before: No. 35, No. 40, hi tech Development Zone, Liaoning, Shenyang Applicant before: LG Electronics (Shenyang) Co., Ltd. |
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