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. 30, 2006
Filed:
May. 07, 2001
Allen J. C. Porter, Sunderland, CA;
Chun Wang, Toronto, CA;
Kevork Kechichian, Unionville, CA;
Gabriel Varga, Toronto, CA;
David Strasser, North York, CA;
Allen J. C. Porter, Sunderland, CA;
Chun Wang, Toronto, CA;
Kevork Kechichian, Unionville, CA;
Gabriel Varga, Toronto, CA;
David Strasser, North York, CA;
ATI International SRL, Christchurch, BB;
Abstract
A graphics processor receives a compressed encrypted video stream. The graphics processor decrypts the compressed encrypted video stream and stores a decrypted version (i.e., a decrypted compressed video stream) in a protected portion of an on-chip or off-chip video memory. The graphics processor then permits processors and other bus masters on the graphics processor to access the on-chip video memory, but conditionally limits access to other bus masters that are located off-chip, such as a central processing unit located off-chip and coupled to the graphics processor via a bus.