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:
Jan. 05, 1988
Filed:
Feb. 04, 1985
Tomoji Nukiyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a multiplying operation, a first partial product corresponding to multiplication of the multiplicand by even multipliers can be produced by a shifting operation, while a second partial product corresponding to multiplication of the multiplicand by odd multipliers is produced by a shifting operation and an adding operation. In the described multiplying circuit, the first partial product is produced according to the result of a decoding operation for generating signals designating the partial product to be used in the multiplying operation. On the other hand the second partial product is independently produced regardless of the decoding result when the multiplicand is received to the multiplying circuit. Thus, a high speed multiplying operation can be achieved.