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:
Jun. 28, 2005
Filed:
Nov. 21, 2001
Sumio Morioka, Yamato, JP;
Yasunao Katayama, Hachiouji, JP;
Sumio Morioka, Yamato, JP;
Yasunao Katayama, Hachiouji, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multiplication module, including a first input unit and a second input unit, for multiplying m bits of data in a Galois field GF(2)(m≧1), includes: first and second power arithmetic units for receiving the first m bits of data from the first input unit; a first multiplication unit for receiving the first m bits of data and the output of the first power arithmetic unit; a second multiplication unit for receiving second m bits of data from the second input unit and the output of the second power arithmetic unit; a selection unit for receiving an output signal from the second multiplication unit and the second m bits of data; and a control unit for outputting a control signal to the first power arithmetic unit, the second arithmetic unit and the selection unit, wherein the first power arithmetic unit receives a first control signal, the second power arithmetic unit receives a second control signal, and the selection unit receives a third control signal, for controlling the output of the selection unit, while the first multiplication unit outputs a first output signal, and the selection unit outputs a second output signal.