Display control system
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United States of America Patent
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Mar 5, 1991
Issued Date -
N/A
app pub date -
Sep 20, 1989
filing date -
Jul 13, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display control circuit system is disclosed which, while maintaining the compatibility of software perfectly, can realize various specifications of the software, provides for a gradation display in an LCD display to realize substantially the same level of access as in a CRT display, permits a configuration control, and, when one or more bits are expanded in the conventional software, can protect the function-expanded bit(s). The display control system includes a mode selector to select either a mode for controlling the display of CRT or a mode for controlling the display of LCD, a controller for controlling the CRT display control, and a controller for controlling the LCD display control.
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