The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2002
Filed:
Nov. 29, 2000
Wm Keith Baker, Belfountain, CA;
Sotos M. Theodoulou, Bramalea, CA;
Xerox Corporation, Stamford, CT (US);
Abstract
The present invention provides a method and circuit for driving control electrodes between a reset voltage and an adjustable control voltage. The circuit includes a reset switch capable of assuming a first state and a second state, the reset switch including a first terminal connected to a first voltage source; a plurality of diodes, each one of the plurality connected between a second terminal of the reset switch and a corresponding one of the control electrodes; and a plurality of voltage control switches, each voltage control switch being capable of assuming an active state and an inactive state, each voltage control switch including a first terminal connected to a corresponding one of the control electrodes and a second terminal connected to a second voltage source, wherein the extraction voltage supplied to a control electrode is adjusted by adjusting the length of time that the corresponding voltage source is made active.