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. 11, 2011
Filed:
Aug. 26, 2008
Masahiro Shigihara, Tokyo, JP;
Toru Takamichi, Tokyo, JP;
Masahiro Shigihara, Tokyo, JP;
Toru Takamichi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
To eliminate the need for buffering in order to calculate data length information on data as an object of computation, a first exclusive-OR unitexecutes computation of exclusive-OR of a cyclic code R(x) of the integral multiple bit bits block A(x) and a data string of M bits, containing the fraction bits block B(x). A first shifting unitshifts the exclusive-OR of the cyclic code R(x) and the data string of M bits, containing the fraction bits block B(x), by {M−H(k)} bits toward a least significant side, where M is a parallel width and H(k) is a bit length of the fraction bits block B(x). An R'(x) generation unitgenerates a cyclic code R′(x) that is a cyclic code of the data after shifting. To obtain R″(x), a second shifting unitshifts the cyclic code R(x) by H(k) bits toward a most significant side. A second exclusive-OR unitexecutes computation of exclusive-OR of the cyclic code R′(x) and data R″(x).