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:
Sep. 23, 1997
Filed:
Nov. 01, 1996
Chester Floyd Bassetti, Jr, Pleasanton, CA (US);
Chin-Hsian Chang, Milpitas, CA (US);
Vlad Bril, Campbell, CA (US);
Rakesh Kumar Bindlish, San Jose, CA (US);
Cirrus Logic, Inc., Fremont, CA (US);
Abstract
A method and apparatus for compensating crosstalk in liquid crystal displays is disclosed which involves applying boost voltages to the rows and columns of the display in proportion to the number of ON pixels in a row or column, the number of transition between 'ON-and-OFF' or 'OFF-and-ON' in each column, and the position of the pixel in a row. 'Boost' voltages are applied to each row as it is being actively scanned to provide horizontal crosstalk compensation, while 'boost' voltages are applied to each column during the vertical retrace interval of the display sequence to provide vertical crosstalk compensation. In a preferred embodiment, the vertical crosstalk compensation is determined during the vertical retrace interval over several flames.