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:
Nov. 23, 2010
Filed:
Aug. 30, 2004
Guofu Zhou, Best, NL;
Alex V. Henzen, Landgraaf, NL;
Jan Van DE Kamer, Heerlen, NL;
Mark T. Johnson, Veldhoven, NL;
Guofu Zhou, Best, NL;
Alex V. Henzen, Landgraaf, NL;
Jan van de Kamer, Heerlen, NL;
Mark T. Johnson, Veldhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An image is updated on a bi-stable display () such as an electrophoretic display in successive frame periods by accessing data defining a set of voltage waveforms for the successive frame periods. At least a portion of the bi-stable display is driven during the successive frame periods according to the accessed data so that a longer frame period (FT,) is used during at least a first portion of the voltage waveforms, and a shorter frame period (FT') is used during at least a second portion of the voltage waveforms. For example, the longer frame period may be an elongated frame period, which is the longest period during which each of the voltage waveforms has a respective constant voltage value.