CN1327691C - Picture regulator for picture apparatus and its method - Google Patents
Picture regulator for picture apparatus and its method Download PDFInfo
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- CN1327691C CN1327691C CNB2005100459189A CN200510045918A CN1327691C CN 1327691 C CN1327691 C CN 1327691C CN B2005100459189 A CNB2005100459189 A CN B2005100459189A CN 200510045918 A CN200510045918 A CN 200510045918A CN 1327691 C CN1327691 C CN 1327691C
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Abstract
The present invention relates to a device and a method for regulating pictures of a video device, which can regulate the deflection and the gain of an A/D converting part in order to consider the IC deviation of a product during production procedures. The method comprises the following stages: regulating the deflection of the A/D converting part; judging whether a deflection regulating value satisfies a target range or not; regulating the gain of the A/D converting part when the deflection regulating value satisfies the target range; judging whether a gain regulating value satisfies a set range or not; interrupting the gain regulation when the gain regulating value can not satisfy the set range, and regulating the deflection again. Thus, in the present invention, firstly, the deflection is regulated, and then the gain is regulated. During the process of regulating the gain, when the gain value is over the set range, the deflection regulation is carried out again. Thus, the failure rate and the time of the regulation can be greatly reduced.
Description
Technical field
The present invention relates to vision facilities,, adjust the skew of the digital converter section of simulation and the vision facilities picture regulator and the method thereof of gain especially in order to consider the product I C deviation in the production process.
Background technology
General vision facilities as digital TV carries out number to input signal and handles, and imports to image processor.
At this moment, the process of analog image being carried out digital processing is extremely important, to the input of specific degrees, must export same digital value always.
But because the single product characteristic of IC, for identical input, vision facilities has inner slight error.
So,, before the product delivery, need to adjust the operation of digital converter section skew of simulation and gain in order to allow this error minimize.
Picture adjusting method about traditional images equipment is described as follows:
As shown in Figure 1, at first, the analog picture signal of importing is treated to the digital signal form, for this digital image signal, according to Cr (redness), Y (brightness), Cb (green) order is adjusted skew (S1).
If export desired degree to above-mentioned Cr, Y, the skew adjusted value of Cb just finishes skew and adjusts (S2).
Equally, according to Cr, Y, the order adjustment gain (S3) of Cb by above-mentioned adjustment process, during the export target degree, finishes gain and adjusts (S4).
And skew adjusted value that above-mentioned adjustment is finished and gain adjustment value are stored in can delete programmable storage (EEPROM) (S5).
Therefore, above-mentioned conventional visual method of adjustment is to finish skew adjustment and gain adjustment respectively.
But there are the following problems for the conventional visual method of adjustment.
The first, because of skew and gain interlock change, so even finished skew adjustment, if when yield value changes, because the skew adjusted value can't normal operation, each combination all can produce deviation.
Both, when gain adjustment value changes, can confirm to adjust the deviation that skew is planted, in this case, because can not normally set the skew adjusted value, so luminance deviation all appears in each combination.
The second, when luminance deviation is serious, there is the serious combination image quality problem that reduces.
The 3rd, in the production process of adjusting skew and gain,, there is the worry that enters Infinite Cyclic if signal strength signal intensity is weak or simulate the single product bad characteristic of digital IC.In this situation, will waste the considerable time because adjust the operation of skew and gain, will reduce operating efficiency significantly.
Summary of the invention
The picture regulator and the method thereof that the purpose of this invention is to provide a kind of vision facilities, make the digital converter section of simulation export same value for same input degree always, irrelevant with the IC deviation, and in production process, carries out skew and gain adjustment more effectively with the shortest time.
The objective of the invention is to be achieved through the following technical solutions:
The picture regulator of vision facilities is by constituting as the lower part: in order to import the A/D converter section that analog picture signal is converted to digital value; Digital image signal processing that will be by the conversion of above-mentioned A/D converter section is the image processing part of the signal that can export; In order to store the 1st reservoir of the digital data that above-mentioned image processing part handles; In order to store the 2nd reservoir of skew of A/D converter section and gain adjustment value; Adjust the skew and the gain of above-mentioned A/D converter section successively, adjust the skew of A/D converter section earlier, when the skew adjusted value satisfies the target phase, begin to adjust yield value again, if being stored in the digital data yield value of above-mentioned the 1st reservoir is being provided with within the scope, above-mentioned skew and gain adjustment value are stored into above-mentioned the 2nd reservoir,, adjust the control part of the skew of above-mentioned A/D converter section once more if above-mentioned digital data yield value exceeds the scope of setting.
The picture adjusting method of vision facilities comprised as the next stage: the stage of adjusting above-mentioned A/D converter section skew; Judge whether above-mentioned skew adjusted value satisfies the stage of target zone; When above-mentioned skew adjusted value satisfies target zone, adjust the stage of above-mentioned A/D converter section gain; Judge the stage whether above-mentioned gain adjustment value satisfies the scope that is provided with; Above-mentioned gain adjustment value can not satisfy when scope is set, and interrupts above-mentioned gain adjustment, adjusts the stage of above-mentioned skew again; Above-mentioned gain adjustment value satisfies when scope is set, and judges whether above-mentioned gain adjustment value satisfies the stage of target zone; And, when above-mentioned gain adjustment value satisfies target zone, store the deviant of above-mentioned adjustment end and the stage of yield value.
The picture adjusting method of aforesaid vision facilities, when the skew adjusted value satisfies target zone, adjust the stage of above-mentioned A/D converter section gain, just like the next stage: when above-mentioned skew adjusted value satisfies target zone, begin the stage that above-mentioned A/D converter section gain is adjusted; When beginning above-mentioned gain and adjust, it is the stage of set point with the initial stage gain value settings.
The picture adjusting method of aforesaid vision facilities, gain adjustment value can not satisfy when scope is set, interrupt above-mentioned gain adjustment, adjust the stage of above-mentioned skew once more, just like the next stage: judge the stage whether present gain adjustment value satisfies (value of setting ± 20) scope; When above-mentioned present gain adjustment value can not satisfy (value of setting ± 20) scope, interrupt gain adjustment, adjust the stage of skew again.
The picture adjusting method of aforesaid vision facilities comprised in addition as the next stage: when above-mentioned skew or gain adjustment value can not satisfy the scope of setting or target zone, and the stage that is offset repeatedly or gains and adjust; Judge whether above-mentioned skew or gain adjustment count the stage of carrying out repeatedly above being provided with back; Above-mentioned skew or gain adjustment surpass to be provided with back counts when carrying out repeatedly, and interruption skew and gain are adjusted, and export the stage of adjustment error message.
Advantage of the present invention and good effect are
The picture regulator of vision facilities of the present invention and method thereof have following effect:
The first, adjust gain because adjust the skew back, in the gain adjustment process, yield value surpasses when scope is set, and re-executes skew adjustment, when can improve the reliability of adjustment process, can reduce the adjustment time significantly.
The second, because after adjusting gain, reaffirm deviant, can reduce significantly when adjusting mortality, can improve image quality to greatest extent.
The 3rd, if surpassing, the adjustment of skew and gain number is set back repeatedly, interrupt adjusting, therefore output error message, can prevent to enter Infinite Cyclic.
Description of drawings
Fig. 1 is the picture adjusting method flow chart of traditional images equipment;
Fig. 2 constitutes block diagram for the picture regulator of vision facilities of the present invention;
Fig. 3 is the picture adjusting method flow chart of vision facilities of the present invention.
Critical piece symbol description among the figure
10:A/D converter section, 20: image processing part, 30: the 1 reservoir, 40: control part, 50: the 2 reservoir.
Embodiment
With reference to accompanying drawing,, be described as follows about the picture regulator of vision facilities of the present invention and the correct embodiment of method thereof:
As shown in Figure 2, at first, in order to import the A/D converter section (10) that analog picture signal is converted to digital value; Digital image signal processing that will be by above-mentioned A/D converter section (10) conversion is the image processing part (20) of the signal that can export; In order to store (1) reservoir (30) of the digital data that above-mentioned image processing part (20) handles; In order to store (2) reservoir (50) of A/D converter section (10) skew and gain adjustment value; Adjust the skew and the gain of above-mentioned A/D converter section (10) successively, if being stored in the digital data yield value of above-mentioned (1) reservoir (30) is being provided with within the scope, above-mentioned skew and gain adjustment value are stored into above-mentioned (2) reservoir (50), if above-mentioned digital data yield value exceeds the scope of setting, adjust the control part (40) of the skew of above-mentioned A/D converter section (10) once more.
At the vision facilities of the present invention that as above constitutes, above-mentioned A/D converter section (10) is converted to 8 bit number code datas with the analog picture signal of input, exports to image processing part (20).
At this moment, above-mentioned image processing part (20) will be from the digital data storing of A/D converter section (10) input in the appropriate address of above-mentioned (1) reservoir (30), and handles this data, the output final image.
And, above-mentioned control part (40) is according to adjustment person's order adjustment skew and the gain from the picture signal of above-mentioned A/D converter section (10) input, and read in the digital data that above-mentioned (1) reservoir (30) stores, when if present deviant of above-mentioned digital data and yield value satisfy the set target zone of adjustment person, be provided with and the skew and the relevant register that gains.
At this, above-mentioned control part (40) is adjusted the skew of A/D converter section (10) earlier, if in the gain adjustment process, the variation of the scope that is provided with takes place to surpass, predicts that adjusted deviant will change, and interrupts gain adjustment, re-executes skew adjustment.
And, if surpassing to set back to count, the skew of above-mentioned A/D converter section (10) or gain adjustment process carry out repeatedly, in order to prevent to enter Infinite Cyclic, interruption skew or gain are adjusted, to adjustment person's output error message.
Picture adjusting method about the vision facilities of the present invention that as above constitutes is described in detail as follows:
As shown in Figure 3, above-mentioned A/D converter section (10) is being the process of digital signal with analog signal conversion both, according to Cr (redness), Y (brightness), Cb (green) in proper order, carries out skew and adjusts (S10).
At this moment, default value is set to finish at production line the mean value of skew adjusted value of the combination of adjustment, can shorten the skew adjustment time like this.
And, read in digital data from above-mentioned (1) reservoir (30), reflect the difference of present deviant and above-mentioned default value, the relevant register of skew is set.
Then, judge whether above-mentioned skew adjustment process finishes, both, whether adjusted value had satisfied the target zone (S11) that has been provided with.
Above-mentioned judged result (S11) if above-mentioned skew adjusted value satisfies target zone, begins to gain when adjusting, and the initial stage register value when beginning is adjusted in gain is set to the value of setting (D) (S20).
And, read in digital data from above-mentioned (1) reservoir (30), the gain related register is set, make present yield value satisfy target zone.
At this moment, in above-mentioned gain adjustment process, more present yield value and above-mentioned value of setting (D) are judged whether present yield value satisfies scope (value of setting (D) ± 20) to be set (S21).
Above-mentioned judged result (S21) if yield value can not satisfy the scope of setting (value of setting (D) ± 20) now, is interrupted above-mentioned gain adjustment process, returns the above-mentioned S10 stage, re-executes skew adjustment.
On the other hand, above-mentioned judged result (S21) is provided with scope (value of setting (D) ± 20) if yield value is satisfied now, judges whether above-mentioned gain adjustment process finishes, and both, whether gain adjustment value satisfied the target zone (S22) that has been provided with.
Above-mentioned judged result (S22) if above-mentioned gain adjustment value satisfies target zone, finishes gain adjustment.
Both, adjust skew after, gain adjustment value becomes the scope of setting (value of setting (D) ± 20) when above, interrupts gain adjustment, re-executes and is offset adjustment.
Then,, confirm the deviant of Cr, Y, Cb, rejudge above-mentioned deviant and whether satisfy target zone (S30) at the state that above-mentioned gain adjustment finishes.
Above-mentioned judged result (S30) if the adjusted deviant that gains can not satisfy target zone, is returned the above-mentioned S10 stage to re-execute skew and adjust.Otherwise deviant satisfies target zone, finishes above-mentioned adjustment, and final deviant and yield value are stored in above-mentioned the 2nd reservoir (50) (S31).
Also have, when combination is opened, utilize the skew and the yield value that are stored in above-mentioned (2) reservoir (50), initialization A/D converter section (10) prevents that each from making up issuable digital process errors.
On the other hand, above-mentioned judged result (S11, S22), if above-mentioned skew or gain adjustment value can not satisfy target zone, to carry out skew repeatedly or the adjustment process that gains, at this moment, whether judgement skew or gain adjustment process surpass to be provided with back to count (is given an example, 100 times) and repeatedly (S12, S23).
Then, number is set back repeatedly if above-mentioned skew or gain adjustment process surpass, in order to prevent to enter Infinite Cyclic, interruption skew or gain are adjusted, and show adjustment error message (for example, " combination now is in the state of can't adjusting ") (S40).
Therefore, after the present invention adjusted skew, in the gain adjustment process, yield value surpassed when scope is set, re-execute the skew adjustment process after, carry out gain adjustment again.
And, at the state that gain adjustment is finished, reaffirm deviant, set final skew and gain adjustment value.
Claims (5)
1. the picture regulator of vision facilities is characterized in that by constituting as the lower part: in order to import the A/D converter section that analog picture signal is converted to digital value; Digital image signal processing that will be by the conversion of above-mentioned A/D converter section is the image processing part of the signal that can export; In order to store the 1st reservoir of the digital data that above-mentioned image processing part handles; In order to store the 2nd reservoir of skew of A/D converter section and gain adjustment value; Adjust the skew and the gain of above-mentioned A/D converter section successively, adjust the skew of A/D converter section earlier, when the skew adjusted value satisfies the target phase, begin to adjust yield value again, if being stored in the digital data yield value of above-mentioned the 1st reservoir is being provided with within the scope, above-mentioned skew and gain adjustment value are stored into above-mentioned the 2nd reservoir,, adjust the control part of the skew of above-mentioned A/D converter section once more if above-mentioned digital data yield value exceeds the scope of setting.
2. the picture of vision facilities and method of adjustment is characterized in that comprising as the next stage: the stage of adjusting above-mentioned A/D converter section skew; Judge whether above-mentioned skew adjusted value satisfies the stage of target zone; When above-mentioned skew adjusted value satisfies target zone, adjust the stage of above-mentioned A/D converter section gain; Judge the stage whether above-mentioned gain adjustment value satisfies the scope that is provided with; Above-mentioned gain adjustment value can not satisfy when scope is set, and interrupts above-mentioned gain adjustment, adjusts the stage of above-mentioned skew again; Above-mentioned gain adjustment value satisfies when scope is set, and judges whether above-mentioned gain adjustment value satisfies the stage of target zone; And, when above-mentioned gain adjustment value satisfies target zone, store the deviant of above-mentioned adjustment end and the stage of yield value.
3. the picture adjusting method of vision facilities as claimed in claim 2, when above-mentioned skew adjusted value satisfies target zone, adjust the stage of above-mentioned A/D converter section gain, it is characterized in that just like the next stage: when above-mentioned skew adjusted value satisfies target zone, begin the stage that above-mentioned A/D converter section gain is adjusted; When beginning above-mentioned gain and adjust, it is the stage of set point with the initial stage gain value settings.
4. the picture adjusting method of vision facilities as claimed in claim 3, above-mentioned gain adjustment value can not satisfy when scope is set, interrupt above-mentioned gain adjustment, adjust the stage of above-mentioned skew again, it is characterized in that: judge the stage whether present gain adjustment value satisfies the value of setting ± 20 scopes just like the next stage; When above-mentioned present gain adjustment value can not satisfy the value of setting ± 20 scopes, interrupt gain adjustment, adjust the stage of skew again.
5. the picture adjusting method of vision facilities as claimed in claim 2 is characterized in that comprising in addition as the next stage: when above-mentioned skew or gain adjustment value can not satisfy the scope of setting or target zone, and the stage that is offset repeatedly or gains and adjust; Judge whether above-mentioned skew or gain adjustment count the stage of carrying out repeatedly above being provided with back; Above-mentioned skew or gain adjustment surpass to be provided with back counts when carrying out repeatedly, and interruption skew and gain are adjusted, and export the stage of adjustment error message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100459189A CN1327691C (en) | 2005-02-23 | 2005-02-23 | Picture regulator for picture apparatus and its method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100459189A CN1327691C (en) | 2005-02-23 | 2005-02-23 | Picture regulator for picture apparatus and its method |
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| Publication Number | Publication Date |
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| CN1652570A CN1652570A (en) | 2005-08-10 |
| CN1327691C true CN1327691C (en) | 2007-07-18 |
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| CNB2005100459189A Expired - Fee Related CN1327691C (en) | 2005-02-23 | 2005-02-23 | Picture regulator for picture apparatus and its method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885530A (en) * | 1981-11-18 | 1983-05-21 | Hitachi Ltd | Digital-analog converter for electron beam image drawing apparatus |
| JPS62163470A (en) * | 1986-01-14 | 1987-07-20 | Canon Inc | Image processor |
| JPH02288547A (en) * | 1989-04-28 | 1990-11-28 | Canon Inc | Picture reader |
| JPH08160304A (en) * | 1994-12-07 | 1996-06-21 | Olympus Optical Co Ltd | Scanning optical microscope |
| US6005614A (en) * | 1997-03-19 | 1999-12-21 | Eastman Kodak Company | Method for calibrating a multi-channel imaging system |
| CN1364034A (en) * | 2001-01-08 | 2002-08-14 | Lg电子株式会社 | Method and apparatus for compensdation image quality of projective display |
| US6774942B1 (en) * | 2000-08-17 | 2004-08-10 | Exar Corporation | Black level offset calibration system for CCD image digitizer |
-
2005
- 2005-02-23 CN CNB2005100459189A patent/CN1327691C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885530A (en) * | 1981-11-18 | 1983-05-21 | Hitachi Ltd | Digital-analog converter for electron beam image drawing apparatus |
| JPS62163470A (en) * | 1986-01-14 | 1987-07-20 | Canon Inc | Image processor |
| JPH02288547A (en) * | 1989-04-28 | 1990-11-28 | Canon Inc | Picture reader |
| JPH08160304A (en) * | 1994-12-07 | 1996-06-21 | Olympus Optical Co Ltd | Scanning optical microscope |
| US6005614A (en) * | 1997-03-19 | 1999-12-21 | Eastman Kodak Company | Method for calibrating a multi-channel imaging system |
| US6774942B1 (en) * | 2000-08-17 | 2004-08-10 | Exar Corporation | Black level offset calibration system for CCD image digitizer |
| CN1364034A (en) * | 2001-01-08 | 2002-08-14 | Lg电子株式会社 | Method and apparatus for compensdation image quality of projective display |
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| Publication number | Publication date |
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| CN1652570A (en) | 2005-08-10 |
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