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. 03, 1989
Filed:
Jun. 01, 1987
Tim A Williams, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A pipelined multiplier which serially receives a signed input multiplicand and a signed multiplier to generate a signed serial output product is provided. The multiplier utilizes a technique which simplifies the addition of partial product bits by creating a uniform partial product array. Columns of partial product bits are sequentially added in a pipelined structure. Carry bits which are generated during the column addition of partial product bits are delayed in the pipeline and coupled back to the input of the pipeline at the appropriate time for another addition of column bits as product bits are serially outputted. By minimizing delays in the pipeline, multiplication of signed operands of large bit length may be quickly performed.