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. 30, 2018
Filed:
Oct. 15, 2009
Jon Erik Oterhals, Trondheim, NO;
Jørn Nystad, Trondheim, NO;
Lars Ericsson, Cambridge, GB;
Eivind Liland, Trondheim, NO;
Daren Croxdord, Cambridge, GB;
Jon Erik Oterhals, Trondheim, NO;
Jørn Nystad, Trondheim, NO;
Lars Ericsson, Cambridge, GB;
Eivind Liland, Trondheim, NO;
Daren Croxdord, Cambridge, GB;
ARM Limited, Cambridge, GB;
Abstract
A transaction elimination hardware unit controls the writing to a frame buffer in a memory of tiles generated by a tile-based graphics processor. The transaction elimination hardware unit has a signature generator that generates a signature representative of the content of the tile for each tile. A signature comparator then compares the signature of a new tile received from the graphics processor with the signatures of one or more tiles already stored in the frame buffer to see if the signatures match. If the signatures do not match, then the signature comparator controls a write controller to write the new tile to the frame buffer. On the other hand, if the signatures match, then no data is written to the frame buffer and the existing tile is allowed to remain in the frame buffer. In this way, a tile is only written to the frame buffer if it is found by the signature comparison to differ from the tile or tiles that are already stored in the frame buffer that it is compared with.