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:
Oct. 29, 1996
Filed:
Jun. 21, 1994
Akira Miyoshi, Osaka, JP;
Yuiti Hashimoto, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A mantissa X.sub.Mk, which satisfies 1.ltoreq.X.sub.Mk <2, is fed to a mantissa process section in order that the iterative multiplication operation of normalized floating-point numbers X.sub.k (k=0, . . . , m), written P=X.sub.0 .times.X.sub.1 .times.X.sub.2 .times.0 . . . .times.X.sub.m, is performed. In the mantissa process section, a product represented in RB (redundant binary) number representation is stored in a register, and such a product is fed back to a multiplier without being converted into a binary number. A shifter for one-place right-shift is provided between the multiplier and the register. A converter sequentially converts each RB number stored in the register into a binary number and provides to the shifter a shift-amount signal S.sub.1 whose value varies with the result of such RB-to-binary number conversion. If a digit that is positioned upward two places from the binary point of a binary number obtained by the conversion is 0, then the value of S.sub.1 is set to 0. If such a digit is 1, then the value of S.sub.1 is set to 1.