Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2008-03-25
2008-03-25
Eisen, Alexander (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
07348948
ABSTRACT:
A driver supplying a total current to a load has a plurality (n) of driver stages (ST1. . . STn). One stage is a master stage. Each driver stage has a switching device (Q) and an inductor (L) connected in series between the switching device and the output of the driver stage. The switching devices are turned ON in sequence with one another, during a cycle time (Tc) which is determined by sensing current through the inductor (L1) in the master stage. When the switching device is turned ON current through the inductor rises, when the inductor current reaches the value of a demanded current the switch is turned OFF, and after the switch is turned OFF the inductor continues to supply (output) current to the load with a current which ramps down. A rectifying device (D) connected between the inductor and the supply line allows current to continue to flow in the inductor and be supplied to the load after the switch is turned OFF.
REFERENCES:
patent: 5287372 (1994-02-01), Ortiz
patent: 5652767 (1997-07-01), Kiyonaga et al.
patent: 5736881 (1998-04-01), Ortiz
patent: 5936599 (1999-08-01), Reymond
patent: 6466188 (2002-10-01), Cato
patent: 6587490 (2003-07-01), Crawford
patent: 6697402 (2004-02-01), Crawford
patent: 6853150 (2005-02-01), Clauberg et al.
Crawford Ian D.
Harwick John
Morales Miguel
Analog Modules, Inc
Eisen Alexander
Leiby Christopher E
Linden Gerald E.
Stauffer Derry A.
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