Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-05-02
2006-05-02
Osorio, Ricardo (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S087000
Reexamination Certificate
active
07038654
ABSTRACT:
The invention provides a display apparatus having a temperature sensor and a step-up circuit generating a drive voltage of the display apparatus by stepping up a power source voltage. The temperature sensor provides temperature data indicative of the temperature of the display panel with a reduced measurement error without limiting the operation of the step-up circuit. To do so, in view of the fact that the step-up circuit has alternating active state in which the circuit is stepping up a source voltage to output a required step-up voltage and inactive state in which no stepping operation is made, the temperature sensor is adapted to obtain temperature data while the step-up circuit is inactive. The temperature data obtained is supplied to a temperature compensation means for changing the drive condition setting value that define the drive condition of the display panel to compensate for the temperature change.
REFERENCES:
patent: 6037920 (2000-03-01), Mizutome et al.
patent: 6320571 (2001-11-01), Takahashi et al.
patent: 6326959 (2001-12-01), Tanaka
patent: 6803899 (2004-10-01), Masazumi et al.
Naiki Takashi
Taguchi Haruo
Hogan & Hartson LLP
Osorio Ricardo
Rohm & Co., Ltd.
Said Mansour M.
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