Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-10-23
2007-10-23
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S051000, C345S090000, C345S098000, C345S099000, C345S204000, C345S212000
Reexamination Certificate
active
10778165
ABSTRACT:
In conventional liquid crystal display controllers such as for portable telephone sets, the display is reduced in the stand-by state but the liquid crystal display duty is not changed, i.e., even the common electrodes of the rows that are not producing display are scanned, and the consumption of electric power is not decreased to a sufficient degree in the stand-by state. A liquid crystal display controller (2) includes a drive duty selection register (34) capable of being rewritten by a microprocessor (1), and a drive bias selection register (32). When the display is changed from the whole display on a liquid crystal display panel (3) to a partial display on part of the rows only, the preset values of the drive duty selection register and of the drive bias selection register are changed, so that the display is selectively produced on a portion of the liquid crystal display panel at a low voltage with a low-duty drive.
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Higuchi Kazuhisa
Sakamaki Gorou
Sugiyama Kimihiko
Tani Kunihiko
Yamamoto Katsuhiko
Kovalick Vincent E.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Renesas Technology Corp.
Shalwala Bipin
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