Image data conversion method and character code/character...

Details Image data conversion method and character code/character... Image data conversion method and character code/character...

H - Electricity

04

N

354/56

H04N 1/41 (2006.01) H03M 7/00 (2006.01)

Patent

CA 1195428

Abstract of the Disclosure An image data conversion technique is disclosed in which the picture image data is converted into a runlength code in order to compress the bit information to be transmitted. The invention achieves a shorter conversion time than prior systems while at the same time ensuring that a smaller conver- sion table than required by other prior systems can be used. Particular use is made of a character code/character pattern converter. This latter circuit includes a character pattern generator which generates a character pattern signal corresponding to the character code. A converter converts the character pattern signal to a runlength code and this is then multiplied by a character enlargement coefficient. A character interval is then added to the enlarged runlength code and an output signal obtained.

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