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:
Jun. 27, 1989
Filed:
Sep. 14, 1987
Tim A Williams, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A pipelineable multiplier which implements two's complement Modifiied Booths' algorithm multiplication. Partial product bits are formed to create an array having an integer number of rows and columns. An addition of partial product bits of each row is accomplished in pipelined fashion by using an arithmetic machine for each row. Each arithmetic machine is a time multiplexed summer including a plurality of full adders, the number of full adders being proportional to a ratio of the sum and carry bit propagation delays of each of the full adders. In one form, full adders having a carry propagation delay substantially twice as fast as a sum propagation delay are used in the pipelineable structure.