METHOD AND DEVICE FOR REPLACING PART OF DIGITAL ENCODING IMAGE

摘要

PROBLEM TO BE SOLVED: To perform prescribed replacement even in the compressed pixel data of decoding images and to exclude the preparation of completely new sub images inside a memory by run length encoding the respective lines of images and occupying the same number of data units for the word of the run length encoding word of an image part for replacing an original image part to be replaced. SOLUTION: It is defined that a memory address for starting a replaceable area is known for the respective lines of a sub image unit. A processing program is provided with a function for retrieving a replaceable part. A reference number 40 is a first replaceable area, a numeral displayed in the figure corresponds to the 16-ary number of the run length encoding of a display character 0 and the reference number 41 indicates a second replaceable area. The areas 40 and 41 are replaced by a character for indicating the display character 2 for instance indicated at the lower part of the figure.