Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2004-06-28
2009-08-25
Awad, Amr (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S690000
Reexamination Certificate
active
07580011
ABSTRACT:
A current generation supply circuit which supplies drive currents corresponding to digital signals for a plurality of loads comprising a current generation circuit which supplies output currents to the loads as the drive currents comprising a reference voltage generation circuit in which reference current having a constant current value is supplied and generates reference voltages based on the reference current; a drive current generation circuit which generates the output currents having current value ratios corresponding to the digital signals relative to the reference current based on the reference voltages; and a characteristic control circuit which sets the ratio of the output currents relative to the reference current. The characteristic control circuit sets the ratio of the output currents for the loads relative to the reference current in a plurality of stages or set so that the ratio of the output currents relative to the reference current can be altered for each of every load depending on the setting of the drive characteristic for each load.
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Morosawa Katsuhiko
Shirasaki Tomoyuki
Toyoshima Tsuyoshi
Awad Amr
Casio Computer Co. Ltd.
Frishauf Holtz Goodman & Chick P.C.
Pervan Michael
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