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. 01, 2006
Filed:
Mar. 28, 2003
Mitsuhiko Ohta, Kawasaki, JP;
Mitsuhiko Ohta, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An input data signal string I is temporarily stored in an input register, and is input to a parallel adder operating according to the instruction of a control unit. The control unit designates an address of a ROM storing a check matrix H, and obtains information about locations of '1s' in a specific column of the check matrix corresponding to a current input data bit. The ROM instructs selectors SEL–SEL#CW to select from a register reg(M) bits corresponding to rows in which the check matrix value is 1 for the specified matrix column and sends the selected values to the adder. Results of the additions and the values output from the reg(M) are selected between for input to the reg(M) through the selectors SEL–SEL#M. This process is repeated until all the input bits have been processed.