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:
Nov. 13, 2012
Filed:
Jun. 21, 2010
Shiro Kamoshida, Kawasaki, JP;
Shiro Kamoshida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In an arithmetic circuit, every time a numerical value is stored in a register, a partial solution is predicted on the basis of the numerical value, an intermediate value is generated by a predetermined calculation using one or more predicted partial solutions, an extended sign bit is appended to the intermediate value by sign extension, and the intermediate value to which the extended sign bit is appended is stored in the register. In addition, the solution is generated on the basis of the one or more partial solutions. A value of a sign bit constituting the intermediate value stored in the register is compared with a value of the extended sign bit stored in the register, and an error signal is outputted when the value of the sign bit is different from the value of the extended sign bit.