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. 02, 1999
Filed:
Aug. 19, 1996
Brahmaji Potu, Austin, TX (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
The present invention provides a method and apparatus for resizing a video image. In a preferred embodiment of the invention, an adapter having a bilinear filter is provided. The bilinear filter contains two first-in first-out (FIFO) memory devices for storing the video image and a vertical and horizontal filters for vertically and horizontally resizing the image. To resize the image, the video data representing the image is transferred to the graphics adapter in M.times.M arrays of pixel data. Each one of the (FIFO) memory devices has the capacity of storing one row of pixel data at a time. Adjacent rows are stored in the FIFO devices for vertical interpolation by the vertical filter. The oldest row in the FIFO devices is replaced by a new row for further interpolation. As each row is transferred to the horizontal filter, intermediate pixels are generated. In another embodiment, extra storage devices are used to hold data elements for interpolating between every two adjacent horizontal blocks.