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:
Jun. 21, 2011
Filed:
Aug. 10, 2007
John M. Danskin, Cranston, RI (US);
Ziyad S. Hakura, Palo Alto, CA (US);
Edward L. Riegelsberger, Fremont, CA (US);
Jason M. Musicer, Santa Clara, CA (US);
Stephen D. Lew, Sunnyvale, CA (US);
John M. Danskin, Cranston, RI (US);
Ziyad S. Hakura, Palo Alto, CA (US);
Edward L. Riegelsberger, Fremont, CA (US);
Jason M. Musicer, Santa Clara, CA (US);
Stephen D. Lew, Sunnyvale, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
Methods, circuits, and apparatus for reducing memory bandwidth used by a graphics processor. Uncompressed tiles are read from a display buffer portion of a graphics memory and received by an encoder. The uncompressed tiles are compressed and written back to the graphics memory. When a tile is needed again before it has been modified, the compressed version is read from memory, uncompressed, and displayed. To reduce the number of unnecessary writes of compressed tiles to memory, a tile is only written to memory if it has remained static for some number of refresh cycles. Also, to prevent a large number of compressed tiles being written to the display buffer in one refresh cycle, the encoder can be throttled after a number of tiles have been written. Validity information can be stored for use by a CRTC. If a tile is updated, the validity information is updated such that invalid compressed data is not read from memory and displayed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile