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:
Dec. 06, 1988
Filed:
May. 07, 1986
Applicant:
Inventor:
Yukio Umetani, Hachioji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364745 ; 364736 ; 364748 ;
Abstract
An operation unit includes a first unit for calculating input data and for outputting an error data indicating an error generated as a result of the calculation by using such a mantissa data at a lower order as has been obtained midway of the calculation but is not used as an output result data; and a second unit for outputting error data of the calculation result data from the first-named error data and error data input accompanying the input data.
Umetani, Yukio. (1988). Operation unit with an error amount calculating circuit for output data (U.S. Patent No. 4789955). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4789955
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