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:
Nov. 14, 2000
Filed:
Aug. 26, 1998
Andrew Bowen, San Jose, CA (US);
Gregory M Eitzmann, Palo Alto, CA (US);
David Warren, Mountain View, CA (US);
Dawn Maxon, Belmont, CA (US);
Michael T Jones, San Jose, CA (US);
David L Dignam, Belmont, CA (US);
Silicon Graphics, Inc., Mountain View, CA (US);
Abstract
An operation for combining multiple video streams permits combining any number of overlay images and base images regardless of processes performed upon one or more of the images. Specifically, where the base images are dynamically sized and resized to provide a constant frame rate (despite varying frame complexity), the process similarly treats overlay images and even other base images. In the dynamic sizing process, a rendering time is compared to high and low water marks. During dynamic resizing, two double buffering operations and a synchronization operation are performed. After dynamic sizing and resizing, the resulting resized images are combined together, regardless of the frame rate of the individual images. Consequently, multiple video streams at varying frame rates are combined at a constant frame rate.