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:
Aug. 10, 1993
Filed:
Sep. 09, 1991
Hitachi, Ltd., Tokyo, JP;
Hitachi Device Engineering Co., Ltd., Chiba, JP;
Abstract
The present invention features performance of operation processing between a signal obtained by converting a coefficient into a Booth code with a Booth encoder, storing the Booth code in a memory device in advance and reading out the stored Booth code for processing an input signal in a semiconductor operation device or a digital filter. As a result, a coding operation by a Booth encoder of the present invention will be performed only once at the time of rewriting a coefficient and will not be repeated, thereby enabling a high-speed operation and realizing reduction of circuit scale at the same time by using an encoded Booth code directly in an operation after a coefficient has been determined.