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:
May. 23, 2000
Filed:
Mar. 02, 1998
David Glen, North York, CA;
Gord Caruk, Bramalea, CA;
Raj Verma, Scarborough, CA;
Keith Lee, Markham, CA;
ATI Technologies, Inc, Thornhill, CA;
Abstract
A method and apparatus for processing video graphics utilizing less power is accomplished by providing a clock circuit that generates a clock signal. The clock signal is fed to a synchronization circuit that generates horizontal and vertical retrace. The clock signal is also provided to a look-up table DAC (digital to analog converter), or a palette DAC. While the video graphics circuit is processing data for display, the clock circuit provides the clock signal to the both the look-up table DAC and the synchronization circuit. When the data being processed is non-video data (i.e., the horizontal and vertical synchronization information), the clock circuit ceases to provide the clock signal to the look-up table DAC, which disables the look-up table DAC. Thus, it is not consuming power. The clock circuit again provides the clock signal to the look-up table DAC when the data being processed is video data (i.e., the data that is to be displayed).