COMPRESSION AND DECOMPRESSION METHOD OF DOT MATRIX CHARACTER.

摘要

This invention relates to a character compression-decompression method for printers. In accordance with this method, dots are added before a character is compressed and a character is generated in such a manner that the same dot pattern continues. Then, this character is compressed and stored in a character generator. When the character is to be printed, the compressed character is read out from the character generator and decompressed and then returned to the character before compression. The dots that are added at the time of compression are removed from this extended character. In this manner the present invention can compress those characters, which cannot be compressed because the same dot pattern does not continue, by a simple method and can store a large number of dot matrix characters in the character generator.