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:
Oct. 06, 1998
Filed:
Nov. 15, 1995
Alexander Julian Eglit, Half Moon Bay, CA (US);
Robin Sungsoo Han, Saratoga, CA (US);
Cirrus Logic, Inc., Fremont, CA (US);
Abstract
An apparatus for controlling a flat panel display with reduced flicker, particularly during grey scale shading. Three shading pattern lookup tables are provided, one for each sub-pixel color (Red, Blue, Green). Each shading pattern lookup table outputs a plurality of shading pattern duty cycle signals, each representing a different shade level. The phase of the three duty cycle signal patterns may be altered by adding a predetermined offset amount to one or more of the shading pattern lookup table addresses. By altering the phases of the outputs of the shading lookup tables, peak current demand within the flat panel display may be reduced and flicker or strobing of individual pixels may be reduced or eliminated.