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:
Feb. 07, 2012
Filed:
Jul. 09, 2007
Michael A. Arnao, Collegeville, PA (US);
Joseph T. Friel, Ardmore, PA (US);
Michael A. Arnao, Collegeville, PA (US);
Joseph T. Friel, Ardmore, PA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
An apparatus embodiment is operative to scale video and includes an input buffer coupled to a real time source of video data and configured to hold a number of lines of video, a horizontal resizer coupled to the input buffer to resize lines of image data, outputting horizontally scaled line(s) to an intermediate buffer configured to store a number of lines. The apparatus has a vertical resizer coupled to the intermediate buffer configured to output vertically and horizontally resized lines of image data. At any given time, some of the lines in the input buffer are scheduled using the DMA controller for replacement via DMA by lines generated by the source of video data, and some or all of the remaining lines in the input buffer are available for processing by the horizontal resizer. A sufficient number of lines are available in the intermediate buffer, such that in operation, the intermediate buffer need not introduce latency.