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:
Jan. 25, 2005
Filed:
Oct. 29, 1998
Chen-jen Jerry Chang, North York, CA;
Erwin Pang, Richmond Hill, CA;
David Chih, Scarborough, CA;
ATI International SRL, Barbados, KN;
Abstract
A circuit and method serves as a slave interface to support both register read/write and monitor detection operations by a graphics controller chip, or other display data source, with a plurality of display devices. The circuit supports differing monitor detection protocols including, for example, IC protocol and non-DDC type protocols. The circuit may be set in two modes, a register mode and a bypass mode. The register mode is used to facilitate standard IC protocol to a display device. Display detection bypass circuitry is used to selectively bypass the register based display detector interface by connecting input pins to any two of a plurality of I/O pins so that the system may be used for monitor detection of a plurality of different display devices, such as CRTs and LCDs to facilitate multiprotocol display detection.