发明名称 |
IMAGE SIGNAL PROCESSING APPARATUS AND IMAGE SIGNAL PROCESSING METHOD |
摘要 |
A first adding circuit sums an input image signal of a target pixel and a value that is derived by multiplying respective display errors of three pixels, which are before the target pixel by one line, by weighting factors. A gradation candidate converter converts the gradation of the summed image signal to a plurality of available gradation candidates that are convertible when an error of the immediate left pixel is added. A delaying circuit delays the summed image signal. A second adding circuit sums the delayed image signal and a value that is derived by multiplying the error generated in the immediate left pixel by a weighting factor. A gradation selector selects a gradation closest to the gradation of the image signal to which the error is added from a plurality of gradation candidates, and outputs it as an image signal of the target pixel. A differencing circuit determines a display error of the target pixel. |
申请公布号 |
EP1583064(A4) |
申请公布日期 |
2007.07.04 |
申请号 |
EP20040808047 |
申请日期 |
2004.12.22 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
YAMADA, KAZUHIRO |
分类号 |
G09G3/20;G09G3/28;G09G3/34;H04N1/40;H04N1/405;H04N1/41;(IPC1-7):G09G3/20;G09G3/36;G09G5/00;H04N5/66;G06T5/00 |
主分类号 |
G09G3/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|