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:
Sep. 26, 1995
Filed:
Mar. 02, 1994
Bradley W Cain, Mesa, AZ (US);
Rajeev Jayavant, Phoenix, AZ (US);
William D Rhoden, Phoenix, AZ (US);
VLSI Technology, Inc., San Jose, CA (US);
Abstract
An image is written to a data frame buffer for display by a monitor. The image includes a repeated pattern. The present invention uses a repeated pattern cache which is not large enough to simultaneously contain an entire repeated pattern. When writing a pixel of the image, a horizontal pattern offset and a vertical pattern offset for a destination location of the pixel are determined. If a scan line for the repeated pattern which corresponds to the vertical pattern offset does not reside in the repeated pattern cache, the scan line for the repeated pattern which corresponds to the vertical pattern offset is fetched into the repeated pattern cache. When the scan line for the repeated pattern which corresponds to the vertical pattern offset resides in the repeated pattern cache, the pixel is accessed at a location in the repeated pattern cache at a location which corresponds to the horizontal pattern offset. The accessed pixel is written to the buffer.