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:
Mar. 12, 2002
Filed:
Apr. 10, 1998
Joseph Domenick Montalbo, Fremont, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A control circuitry for conveying video data in a flat panel display transmits video data using reduced swing differential signals that are time-multiplexed on a data bus. Data transmission schemes are provided to reduce data transitions on the data bus. A repeat last pixel scheme is used whenever the pixel data repeat horizontally on a display. A repeat last line pixel scheme is used whenever the pixel data repeat vertically on a display. A repeat last different pixel scheme is used whenever video data comprises mainly of monochrome information. In the alternate, a dynamic color pallet is used to store a few most frequently used pixel colors. When the current pixel color matches one of the colors stored, a pixel color address is transmitted instead of the pixel data itself. The use of reduced swing differential signaling on a time-multiplexed data bus together with one or more of the data transmission schemes achieves significant reduction in power consumption and electromagnetic interference generation.