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:
Mar. 31, 1998
Filed:
Jul. 07, 1995
Ruby Bei-Loh Lee, Los Altos Hills, CA (US);
Stephen L Bass, Fort Collins, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A multiplier is modified to perform a population count. A first value is input to the multiplier in place of a first multiplicand. The first value is an operand upon which the population count is to be performed. A second value is input into the multiplier in place of a second multiplicand. Each bit of the second value is at logic one. In partial product rows, certain partial products are forced to logic zero. This is done so that only a single column of partial products is used to calculate the population count. The partial products are then summed to produce a result. The present invention also may be adapted for use with Booth-encoded multipliers.