Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-08-21
1998-12-22
Chang, Vivian
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 98, G09G 336
Patent
active
058524282
ABSTRACT:
Each of a plurality of segment drivers for driving a liquid crystal display panel used in an electronic device includes a display data memory corresponding to a display image plane. The display memory is supplied with an X address and Y address from an address register so that the data write area thereof can be specified. A control device of the electronic device outputs address data and display data to a connection bus when data is stored into the display memory, and the segment driver writes transfer data into an addressed area when it is determined that the write-in process is effected for the segment driver itself by decoding address data by use of a decoder. When data stored in the display memory is displayed, the Y address is automatically incremented in synchronism with a common signal by an increment circuit, and data of one line specified by the Y address is simultaneously read out from an output port of the display memory, converted into a segment signal via a latch circuit and output.
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Ishikawa Ryo
Kawasugi Kazuhiro
Casio Computer Co. Ltd.
Chang Vivian
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