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. 03, 2000
Filed:
Dec. 07, 1999
Arthur Aaron Bright, Croton-on-Hudson, NY (US);
Stephen Victor Kosonocky, Darien, CT (US);
Kevin Wilson Warren, Fishkill, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multiple embedded memory frame buffer system includes a master graphics subsystem and a plurality of slave graphics subsystems. Each subsystem includes a frame buffer and a color palette for decompressing data in the frame buffer. The master subsystem further includes a digital to analog converter coupled to receive the decompressed digital data from the palette of each subsystem and outputting analog versions of the digital data to an output device. The system further includes a timing system for determining which outputs of the subsystems are to to be converted by the digital to analog converter at a given time. A method of synchronization of embedded frame buffers for data transfer through a single output includes the steps of generating a first clock signal and a second clock signal in a master embedded frame buffer, sending the first and second clock signals to a slave embedded frame buffer and delaying the second clock signal to be in phase with a third clock signal generated by a graphics controller such that no data is lost when transferring data from the master and slave embedded frame buffers.