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.

Date of Patent:
Feb. 16, 1988

Filed:

Feb. 07, 1985
Applicant:
Inventor:

Takashi Kanazawa, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364765 ;
Abstract

In an electronic circuit for dividing a dividend (RR) by a divisor (RD) to calculate an eventual quotient (Q) divisible into first through N-th partial quotients, each being represented by a g-ary number, an approximate reciprocal (RC) of the divisor is read out of a memory (34) and multiplied in a first multiplication circuit (36) by the divisor to obtain a correction factor (C.sub.1). A second multiplication circuit (37) multiplies the dividend by the approximate reciprocal to calculate a first provisional quotient which is near to the eventual quotient and which is processed into a first partial provisional quotient (P.sub.1) and a second provisional quotient by a first adder circuit (61) and a second partial divider (64.sub.1), respectively. The first partial provisional quotient is modified into the first partial quotient Q.sub.1 with reference to the second provisional quotient in a first correction circuit (66.sub.1). Likewise, an i-th partial quotient (Q.sub.1) except the first partial quotient is successively produced from an i-th correction circuit (66.sub.i) by modifying an i-th partial provisional quotient (P.sub.i) with reference to an (i+1)-th provisional quotient. Thus, the first through the N-th partial quotients successively appear from the first through the N-th correction circuits and are synchronously produced as the eventual quotient from a synchronization circuit (105).


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