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. 27, 1988
Filed:
Dec. 24, 1986
Makoto Yoshida, Tokyo, JP;
Tomoji Nukiyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A floating-point normalizing circuit is adapted to receive two multi-bit numbers so as to generate a signal indicative of a shift amount for floating-point normalization. The normalizing comprises a plurality of unitary circuits each including a pair of binary inputs, a unitary shift signal output, a carry input, a carry output internally but disconnectably connected to the carry input. These unitary circuits are adapted to receive at their binary inputs different digit position bits of each of the two input numbers, respectively, but each of the unitary circuits receives at its one pair of binary inputs the same digit position bits of the two input numbers. The carry input of each unitary circuit is connected to the carry output of an adjacent more significant digit unitary circuit so that a carry signal is transferred from a more significant digit unitary circuit to a less significant digit unitary circuit. Each of the unitary circuit generates a unitary shift signal when a predetermined logic level is detected in at least one input of the binary inputs and a predetermined carry signal is received at its carry input, and also disconnects the internal connection between the carry input and output, whereby the position of the unitary circuit generating the unitary shift signal is indicative of the amount of required shift for normalization.