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:
Apr. 25, 2017
Filed:
Dec. 24, 2013
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Koichiro Ban, Kawasaki, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
According to one embodiment, an arithmetic circuit includes follows. The arithmetic unit performs an arithmetic operation including addition and multiplication to generate a first value of (n+m) bits. The rounding preprocessor performs an OR operation on lower (m−k) bits of the first value to generate a second value of 1 bit. The register stores a third value of (n+k+1) bits obtained by concatenating upper (n+k) bits of the first value and the second value. The rounding postprocessor calculates a carry bit value of 1 bit from a most significant bit of the third value and lower (k+1) bits of the third value, and adds the carry bit value to upper n bits of the third value.