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:
Jan. 06, 2004
Filed:
Aug. 25, 2000
H. Peter Hofstee, Austin, TX (US);
Hung C. Ngo, Austin, TX (US);
Kevin J. Nowka, Round Rock, TX (US);
Jun Sawada, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus performing rotate operations using cascaded multiplexers provides a scalable rotator circuit having a sub-field rotate capability that requires no additional interconnects at the sub-field endpoints. The rotator performs bit field swap operations at each stage of a series of cascaded multiplexers. The bit field size increases monotonically from a single bit to half of the rotator operand size. The control logic selects swap operations for each individual bit field at each stage, in order to arrange a desired rotated output vector.