Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-11-06
2007-11-06
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S204000, C345S211000, C345S212000, C345S213000
Reexamination Certificate
active
10803037
ABSTRACT:
Apparatus and methods according to embodiments of the present invention can control an inverter pulse width modulation (PWM) frequency of a liquid crystal display (LCD) in a portable computer or the like. Noise and/or interference caused by a system environment can be detected and one of a plurality of LCD frame frequencies can be selected responsive to the system environment. Interference between a PWM frequency of an inverter can be reduced or prevented by identifying a desired PWM frequency of the inverter adapted to control a brightness of the LCD based on the selected LCD frame frequency or the like, and driving the LCD using the same.
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patent: 5786801 (1998-07-01), Ichise
patent: 5939830 (1999-08-01), Praiswater
patent: 6445143 (2002-09-01), Min
patent: 6961044 (2005-11-01), Woo
patent: 2004/0008176 (2004-01-01), Nuimura
Hjerpe Richard
Ked & Associates LLP
LG Electronics Inc.
Tran My-Chau T.
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