Matsushita Electric Industrial Co., Ltd.

Toshiyuki Yasui

Yasushi Fukushima

Tadahiro Yoshida

Tetsurou Hanaoka

Hiroyuki Ono

Error picture image data correction apparatus and method of the same

An error correction apparatus corrects erroneous data and reduces deformation of a displayed picture when inputted data are high frequency data around the erroneous data. R, G and B channel signals of data are inputted via input nodes 1a, 1b and 1c. A controller generates signals ch1 and ch2 which specify the erroneous data channel and a channel for data correction according to a control signal C from an error detection circuit. A correction data circuit generates correction data. For example, if G(i) is assumed to be erroneous data, the correction data circuit generates correction data as G'(i)=R(i)+G(i+1)-R(i-1) based on the previous data G(i-1) provided by a delay circuit and the data of the other errorless channel. The erroneous data G(i) is replaced with the correction data G'(i) and a set of corrected data R(i), G'(i) and B(i) is outputted as output data.

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Osaka, Japan

Toshiyuki Yasui