Picture display device and picture display method

Abstract

A picture display device 1 for displaying a picture based on a picture signal includes: a correction data storage means 13 for storing compressed data of correction data for correcting luminance variations among display pixels, compressed by a predetermined data compression technique; a picture signal correction means 15 for correcting the picture signal based on the compressed data stored in the correction data storage means to generate a picture signal in which the luminance variations among the display pixels are corrected; and a picture display means 18 for displaying a picture based on the picture signal in which the luminance variations among the display pixels are corrected.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention may best be understood by referring to the following description and accompanying drawings that are used to illustrate embodiments of the invention.

FIG. 1 is a block diagram of a picture display device according to an embodiment of the present invention;

FIG. 2 is an exemplary diagram for explaining correction data before compression;

FIG. 3 is an exemplary diagram for illustrating a second modification example of the correction data stored in a correction value memory;

FIG. 4 is an exemplary diagram for illustrating a third modification example of the correction data stored in the correction value memory;

FIG. 5 is an exemplary diagram for illustrating a fourth modification example of the correction data stored in the correction value memory; and

FIG. 6 is an exemplary diagram for illustrating a fifth modification example of the correction data stored in the correction value memory.

Claims

1. A picture display device for displaying a picture based on a picture signal, comprising: correction data storage means for storing compressed data pertaining to correction data to correct luminance variations among display pixels; andpicture signal correction means for correcting the picture signal based on the compressed data stored in the correction data storage means to generate a picture signal in which the luminance variations among the display pixels are corrected.

2. The picture display device according to claim 1 further comprising: picture display means for displaying a picture based on the picture signal in which the luminance variations among the display pixels are corrected.

3. The picture display device according to claim 1, further comprising: decode means for restoring correction data before compression from the compressed data stored in the correction data storage means,wherein the picture signal correction means corrects the picture signal using the correction data restored by the decode means.

4. The picture display device according to claim 1, wherein the compressed data stored in the correction data storage means is data in which a difference between the correction data for adjacent display pixels is compressed.

5. The picture display device according to claim 1, wherein the compressed data stored in the correction data storage means is data in which the correction data is compressed for each display color.

6. The picture display device according to claim 1, wherein the compressed data stored in the correction data storage means is data in which a portion of the correction data corresponds to a plurality of display pixels.

7. The picture display device according to claim 6, wherein the portion of the correction data corresponding to the plurality of display pixels is a piece of correction data for the plurality of display pixels.

8. The picture display device according to claim 6, wherein the portion of the correction data corresponding to the plurality of display pixels is an average value of the correction data for the plurality of display pixels.

9. The picture display device according to claim 3, wherein the correction data storage means stores no correction data for a predetermined display pixel, andwherein the decode means calculates the correction data for the predetermined display pixel based on correction data for a plurality of display pixels existing within a peripheral region of the display pixel.

10. A method for displaying a picture based on a picture signal and for storing compressed data of correction data for correcting luminance variations among display pixels, the method comprising: correcting the picture signal based on the compressed data to generate a picture signal in which the luminance variations among the display pixels are corrected; anddisplaying the picture based on the picture signal in which the luminance variations among the display pixels are corrected.

11. An apparatus comprising: a memory to store compressed, correction data;a decoder coupled to the memory, the decoder to restore correction data into an uncompressed state from the compressed correction data; anda correction circuit coupled to the decoder, the correction circuit to correct a picture signal using the restored correction data recovered from the compressed correction data stored in the memory in order to correct luminance variations among display pixels of the picture signal.

12. The apparatus according to claim 11 further comprising: a display to produce a picture based on the picture signal in which the luminance variations among the display pixels are corrected.

13. The apparatus according to claim 11, wherein the compressed correction data stored in the memory is data in which a difference between correction data for adjacent display pixels is compressed.

14. The apparatus according to claim 11, wherein the compressed correction data stored in the memory is data in which correction data is compressed for each display color.

15. The apparatus according to claim 11, wherein the compressed correction data stored in the memory is data in which a portion of the correction data corresponds to a plurality of display pixels.

16. The apparatus according to claim 15, wherein the portion of the correction data corresponding to the plurality of display pixels is an average value of the correction data for the plurality of display pixels.

17. The apparatus according to claim 11, wherein the decoder calculates the correction data for a predetermined display pixel based on correction data for a plurality of display pixels existing within a peripheral region of the predetermined display pixel.