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. 16, 1996
Filed:
Nov. 10, 1994
Toshihiro Ishikawa, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An arithmetic apparatus includes an arithmetic logic unit for performing a given arithmetic operation of double precision data having a preselected number of bits, a first register storing results of the arithmetic operation of higher-order bits in the double precision data, a second register storing results of the arithmetic operation of lower-order bits in the double precision data, an overflow-detection circuit for detecting overflow conditions of the results of the arithmetic operations, a maximum/minimum value-setting circuit for setting the results of the arithmetic operation to be stored in the first register to one of maximum and minimum values according to the overflow conditions, and a correction circuit for correcting an output value indicative of he results of the arithmetic operation provided by the second register to one of a first value defined by a bit sequence of 0s and a second value defined by a bit sequence of 1s according to the overflow condition.