Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-03-22
2011-03-22
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S082000, C315S169300
Reexamination Certificate
active
07911424
ABSTRACT:
A device for regulating the bias voltage of circuits for controlling columns of a matrix display capable of selecting columns to turn on the light-emitting diodes of the selected columns and of a selected line, the device including a first measurement circuit providing a first measurement signal representative of the highest voltage among the voltages of the selected columns; a second measurement circuit providing a second measurement signal representative of the lowest voltage among the voltages of the selected columns; and an adjustment circuit receiving the first and second measurement signals and capable of decreasing the bias voltage if the first measurement signal is smaller than a first comparison signal and of increasing the bias voltage if the second measurement signal is greater than a second comparison signal.
REFERENCES:
patent: 6518962 (2003-02-01), Kimura et al.
patent: 6750840 (2004-06-01), Morita
patent: 2002/0097002 (2002-07-01), Lai et al.
patent: 2003/0184237 (2003-10-01), Togashi et al.
patent: 2004/0017725 (2004-01-01), Mas et al.
patent: 2005/0232333 (2005-10-01), Franch et al.
patent: 2006/0001613 (2006-01-01), Routley et al.
French Search Report from French Patent Application No. 04/52868, filed Dec. 6, 2004.
Chaussy Danika
Mas Céline
Hegarty Kelly
Jorgenson Lisa K.
McClellan William R.
Mengistu Amare
STMicroelectronics S.A.
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