Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-02-04
2000-08-15
Nguyen, Chanh
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
G09G 336
Patent
active
061043699
ABSTRACT:
For display control of a liquid crystal display, display data and address signals for designating display dots are required. Segment address data designating X-direction addresses in the display space and common address data designating Y-direction addresses are input. Processing such as block transfer of address data in cases where the display address extends beyond the display space and where display picture is shifted within the display space has hitherto been carried out by software, but this places limitations on display speed. In the present application, the display space is divided in the X direction and the divisions of the display space are separately served by phural segment drive circuits. A common drive circuit is provided with hardware elements for selecting individual segment drive circuits so as to match the display address. This permits high-speed display operation and facilitates provision of software regulating the operation CPU.
REFERENCES:
patent: 4747081 (1988-05-01), Heilveil et al.
patent: 4943801 (1990-07-01), Oguchi
Inamori Yoshimitsu
Oda Koichi
Nguyen Chanh
Sharp Kabushiki Kaisha
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