Printing device with compressed text data memory
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsHideo Ueno, Keiko Yamada
Life of this patent
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Abstract
A printing device with a data memory efficiently stores character code data and other attribute data in a limited memory region. If a character code of a print data input from the keyboard is a space code, the print data is nullified, and a pitch data corresponding to the space code is added to the pitch data corresponding to the character code previously stored in a correction memory. Namely, the data are compressed. Since only the print data excepting the space code data is stored in the memory, the limited memory region is efficiently used.
Claims5
A printing device with a text data memory and a printing head, the printing device comprising:
- input means for inputting character data and space data;
- data coding means for making a first character print data by combining a character code data corresponding to the character data input through the input means and a normal printing pitch data when the character data is followed by another character data, and for making a second character print data by combining a character code data corresponding to the character data input through the input means and an extended printing pitch data when the character data is followed by a space data;
- and
- data storing means for serially storing the first and second character print data in the text data memory.
Dependencies are inferred from the claim text.