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:
Aug. 11, 1998
Filed:
Mar. 22, 1996
Thanh D Truong, Walnut, CA (US);
Vinod Kadakia, Rancho Palos Verdes, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A circuit for rotating a digital image through any angle at the rate of one pixel per clock period. First, the circuit divides the image to be rotated into blocks which can be rotated without pause once each is started. Then a nearest neighbor calculating circuit is used to determine the value of each rotated pixel in the block. The circuit is divided and pipelined so that each part can produce its output in one clock cycle. The nearest neighbor calculation is done in two sections of the circuit, and other sections of the circuit set up initial conditions or provide for transitions from one rotated scan line, or block, to the next.