The method of display unit, display panel drive and driving display floater
The method of display unit, display panel drive and driving display floater
 CN 101,075,415 B
 Filed: 05/17/2007
 Issued: 05/18/2016
 Est. Priority Date: 05/17/2006
 Status: Active Grant
First Claim
1. a display unit, comprising:
 Display floater;
Computing and correcting circuit, it is configured to be similar to the input luma data of arithmetic expression to target frame image by useCarry out gamma correction, to produce output luma data;
Drive circuit, it is configured with according to described output luma data, drives described display floater;
WithCorrection data counting circuit, it is configured and produces the check point data group being made up of multiple check point data,Wherein, described correction data counting circuit is according to described input luma data or the described target of described target frame imageThe input luma data of the preceding frame image before two field picture, produces described check point data group, to make described multiple schoolData specify the shape of the gamma curve of described gamma correction on schedule,Wherein, described computing and correcting circuit, according to described multiple check point data of described check point data group, are determined instituteState the coefficient of approximate arithmetic expression,Wherein when the maximum of described input luma data is D_{IN}^{MAX}With the maximum of described output luma data be D_{OUT}^{MAX}Time,The described check point data group producing by described correction data counting circuit comprises by following equation (1a) or (1b) definitionCheck point data CP0 to CP5;
CP0＝
0，
Chinese PRB Reexamination
Abstract
Have according to LCD device of the present invention (1): LCD panel (2); Computing and correcting circuit (14), it is configured by use arithmetic expression, the input luma data of target frame image is carried out to correct operation, to produce output luma data; Datawire driver (15 to 17), it is configured to drive LCD panel (2) according to output luma data; And correction data counting circuit (13), it is configured to produce correction data according to the input luma data of the preceding frame image before the input luma data of target frame image or target frame image, and this correction data has specified the input luma data of target frame image and exported the relation between luma data. Computing and correcting circuit (14) are determined the coefficient of arithmetic expression according to correction data.
15 Claims

1. a display unit, comprising:

Display floater; Computing and correcting circuit, it is configured to be similar to the input luma data of arithmetic expression to target frame image by useCarry out gamma correction, to produce output luma data; Drive circuit, it is configured with according to described output luma data, drives described display floater;
WithCorrection data counting circuit, it is configured and produces the check point data group being made up of multiple check point data, Wherein, described correction data counting circuit is according to described input luma data or the described target of described target frame imageThe input luma data of the preceding frame image before two field picture, produces described check point data group, to make described multiple schoolData specify the shape of the gamma curve of described gamma correction on schedule, Wherein, described computing and correcting circuit, according to described multiple check point data of described check point data group, are determined instituteState the coefficient of approximate arithmetic expression, Wherein when the maximum of described input luma data is D_{IN}^{MAX}With the maximum of described output luma data be D_{OUT}^{MAX}Time,The described check point data group producing by described correction data counting circuit comprises by following equation (1a) or (1b) definitionCheck point data CP0 to CP5; CP0＝
0，


2. display unit as claimed in claim 1, wherein, described correction data counting circuit has:

Memory circuit, it is configured to store the multiple check point data groups corresponding from different gamma values;
WithSelect circuit, its be configured with according to the described input luma data of described target frame image or described target frame image itThe described input luma data of front described preceding frame image, described in selecting to be provided to from described multiple check point data groupsThe described check point data group of computing and correcting circuit, Wherein said correction data counting circuit is according to the described input GTG of described target frame image or described preceding frame imageData are calculated average picture level APL, and Wherein said selection circuit is configured described in average picture level APL to calculate described in basis selects to be provided toThe described check point data of computing and correcting circuit.


3. display unit as claimed in claim 1,
Wherein said correction data counting circuit is according to the described input GTG of described target frame image or described preceding frame imageData are calculated average picture level APL;  And
Wherein, described correction data counting circuit has; Memory circuit, it is configured to store the multiple check point data groups corresponding from different gamma values;
WithInterpolation and selection circuit, it is configured the high bit of the average picture level APL to calculate described in basis, from described manyIn individual check point data group, select two check point data groups, and lower according to the described average picture level APL calculatingPosition, produces by described two check point data groups are carried out to interpolation the described school that is provided to described computing and correcting circuitData group on schedule.
 And

4. display unit as claimed in claim 2,
Wherein said display floater is display panels, Wherein display unit also comprises: 
Backlight, it is configured to illuminate described display panels;
WithBacklight illumination Circuit tuning, the average picture level APL that it is configured to calculate described in basis, controls described backlightBrightness.


5. display unit as claimed in claim 1, wherein, described correction data counting circuit has:

Memory circuit, it is configured to store the multiple check point data groups corresponding from different gamma values;
WithSelect circuit, its be configured with according to the described input luma data of described target frame image or described target frame image itThe described input luma data of front described preceding frame image, described in selecting to be provided to from described multiple check point data groupsThe described check point data group of computing and correcting circuit, Wherein said correction data counting circuit calculates the described input GTG of described target frame image or described preceding frame imageThe frequency distribution of data, Wherein said correction data counting circuit calculates corresponding with the relative low scope of value of wherein said input luma dataThe frequency of the frequency of the first order and the second level corresponding with the relative high scope of value of wherein said input luma data, Wherein said selection circuit is constituted as according to the difference of the described frequency between the described first order and the described second level, choosingSelect the described check point data group that is provided to described computing and correcting circuit.


6. display unit as claimed in claim 5,
Wherein said display floater is display panels, Wherein display unit also comprises: 
Backlight, it is configured to illuminate described display panels;
WithBacklight illumination Circuit tuning, it is configured with according to described in the described frequency between the described first order and the described second levelDifference, controls described brightness backlight.


7. display unit as claimed in claim 1, wherein, described correction data counting circuit has:

Memory circuit, it is configured to store the multiple check point data groups corresponding from different gamma values;
WithSelect circuit, its be configured with according to the described input luma data of described target frame image or described target frame image itThe described input luma data of front described preceding frame image, described in selecting to be provided to from described multiple check point data groupsThe described check point data group of computing and correcting circuit, Wherein said correction data counting circuit also has; Frequency distribution counting circuit, it is configured to calculate the described input ash of described target frame image or described preceding frame imageThe frequency distribution of exponent number certificate;
AndCheck point data operation circuit, Wherein said selection circuit is configured the frequency distribution to calculate described in basis, from described multiple check point data groupsSelect described check point data group;
WithWherein said check point data operation circuit is configured the frequency distribution to calculate described in basis, to described in selectedThe check point data that check point data group comprises are revised, and Wherein said check point data operation circuit is by the selected described check point of the check point data that are corrected described in comprisingData group is defined as being provided to the described check point data group of described computing and correcting circuit.


8. a display unit, comprising:

Display floater; Computing and correcting circuit, it is configured to be similar to the input luma data of arithmetic expression to target frame image by useCarry out gamma correction, to produce output luma data; Drive circuit, it is configured with according to described output luma data, drives described display floater;
WithCorrection data counting circuit, it is configured and produces the check point data group being made up of multiple check point data, Wherein, described correction data counting circuit is according to described input luma data or the described target of described target frame imageThe input luma data of the preceding frame image before two field picture, produces described check point data group, to make described multiple schoolData specify the shape of the gamma curve of described gamma correction on schedule, Wherein, described computing and correcting circuit, according to described multiple check point data of described check point data group, are determined instituteState the coefficient of approximate arithmetic expression, Wherein, described correction data counting circuit has; Memory circuit, it is configured to store the multiple check point data groups corresponding from different gamma values;
WithSelect circuit, its be configured with according to the described input luma data of described target frame image or described target frame image itThe described input luma data of front described preceding frame image, described in selecting to be provided to from described multiple check point data groupsThe described check point data group of computing and correcting circuit, Wherein said correction data counting circuit also has; Frequency distribution counting circuit, it is configured to calculate the described input ash of described target frame image or described preceding frame imageThe frequency distribution of exponent number certificate;
AndCheck point data operation circuit, Wherein said selection circuit is configured the frequency distribution to calculate described in basis, from described multiple check point data groupsSelect described check point data group;
WithWherein said check point data operation circuit is configured the frequency distribution to calculate described in basis, to described in selectedThe check point data that check point data group comprises are revised, and Wherein said check point data operation circuit is by the selected described check point of the check point data that are corrected described in comprisingData group is defined as being provided to the described check point data group of described computing and correcting circuit, Each being wherein stored in the described multiple check point data groups in described memory circuit comprises check point dataCP0 to CP5, in the situation that corresponding gamma value γ
is less than 1, these check point data CP0 to CP5 is fixed by following equation (1a)Justice, or in the situation that corresponding gamma value γ
is greater than 1, these check point data CP0 to CP5 is defined by following equation (1b);CP0＝
0，


9. display unit as claimed in claim 8,
Wherein said display floater is display panels, Wherein display unit also comprises: 
Backlight, it is configured to illuminate described display panels;
WithBacklight illumination Circuit tuning, it is configured with according to the described frequency of the described frequency of the described first order and the described second levelDescribed sum and the described frequency of the described third level and the described sum of the described frequency of the described fourth stage between described poorDo not control described brightness backlight.


10. a display panel drive, comprising:

Computing and correcting circuit, it is configured to be similar to the input ash exponent number of arithmetic expression about target frame image by useAccording to carrying out gamma correction to produce output luma data; Drive circuit, it is configured to drive display floater according to described output luma data;
WithCorrection data counting circuit, it is configured and produces the check point data group being made up of multiple check point data, Wherein, described correction data counting circuit is according to described input luma data or the described target of described target frame imageThe input luma data of the preceding frame image before two field picture, produces described check point data group, to make described multiple schoolData specify the shape of the gamma curve of described gamma correction on schedule, Wherein, described computing and correcting circuit are determined described near according to described multiple check point data of described check point data groupLike the coefficient of arithmetic expression, Wherein when the maximum of described input luma data is D_{IN}^{MAX}With the maximum of described output luma data be D_{OUT}^{MAX}Time,The described check point data group producing by described correction data counting circuit comprises by following equation (1a) or (1b) definitionCheck point data CP0 to CP5; CP0＝
0，


11. as the display panel drive of claim 10, and wherein, described correction data counting circuit has:

Memory circuit, it is configured to store the multiple check point data groups corresponding from different gamma values;
AndSelect circuit, it is configured with according to the described input luma data of described target frame image or described target frame imageThe described input luma data of described preceding frame image before, described in selecting to be provided to from described multiple check point data groupsThe described check point data group of computing and correcting circuit.


12. as the display panel drive of claim 11,
Wherein, described correction data counting circuit is according to the described input ash of described target frame image or described preceding frame imageExponent number is according to calculating average picture level APL, and Wherein said selection circuit is configured described in average picture level APL to calculate described in basis selects to be provided toThe described check point data of computing and correcting circuit.

13. as the display panel drive of claim 11,
Wherein said correction data counting circuit calculates the described input ash of described target frame image or described preceding frame imageThe frequency distribution of exponent number certificate, and based on described calculated frequency distribution calculate be provided to described computing and correcting circuit described inCheck point data group, and Wherein said correction data counting circuit calculates corresponding with the relative low scope of value of wherein said input luma dataThe frequency of the frequency of the first order and the second level corresponding with the relative high scope of value of wherein said input luma data, Wherein said selection circuit is constituted as according to the difference of the described frequency between the described first order and the described second level, choosingSelect the described check point data group that is provided to described computing and correcting circuit.

14. as the display panel drive of claim 11,
Wherein said correction data counting circuit has: 
Frequency distribution counting circuit, it is configured to calculate the described input of described target frame image or described preceding frame imageThe frequency distribution of luma data;
AndCheck point data operation circuit, Wherein; Described selection circuit is configured with according to described frequency distribution of being calculated, and from described multiple check point data groups, selectsBe provided to the described check point data group of described computing and correcting circuit, and Described check point data operation circuit is configured to be included in selected institute according to described frequency distribution amendment of being calculatedState the check point data in check point data group.


15. 1 kinds drive the method for display floater, comprising:

By using approximate arithmetic expression to carry out gamma correction about the input luma data of target frame image, to produce outputLuma data; Drive display floater according to described output luma data;
WithProduce the check point data group being formed by multiple check point data, Wherein, described check point data group is according to described input luma data or the described target frame figure of described target frame imageThe input luma data of the preceding frame image before picture is produced, to make described multiple check point data specify described gammaThe shape of the gamma curve of proofreading and correct, What wherein, determine described approximate arithmetic expression according to described multiple check point data of described check point data group isNumber, Wherein when the maximum of described input luma data is D_{IN}^{MAX}With the maximum of described output luma data be D_{OUT}^{MAX}Time,The described check point data group of described generation comprise by following equation (1a) or (1b) definition check point data CP0 to CP5; CP0＝
0，

Specification(s)