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:
Sep. 04, 2001
Filed:
Jun. 19, 1998
Stephen C. Purcell, Mountain View, CA (US);
Nital P. Patwa, San Jose, CA (US);
ATI International SRL, Hastings, BB;
Abstract
An adder tree is partitioned into two parts. One multiplexer provides a first bit group to the first part of the tree. A second multiplexer provides a second bit group to the second part of the tree. The two multiplexers provide the same bits groups to the respective parts in response to a first instruction, and provide different bit groups in response to a second instruction. Therefore, the first instruction allows for the single multiplication of the number represented by the first bit group by another number provided to collectively represented to both parts of the tree. The second instruction causes the multiplication of the first bit group by the third bit group in the first part of the adder tree, and causes another multiplication of the second bit group by the fourth bit group in the second part of the adder tree.