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:
Feb. 05, 2008
Filed:
Feb. 22, 2006
Kameran Azadet, Morganville, NJ (US);
Meng-lin Yu, Morganville, NJ (US);
Zhan Yu, Sunnyvale, CA (US);
Kameran Azadet, Morganville, NJ (US);
Meng-Lin Yu, Morganville, NJ (US);
Zhan Yu, Sunnyvale, CA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
An low power vector summation apparatus is provided for using 2's complement arithmetic without the high switching activity of the prior art. In particular, the invention operates to exploit the sign-extension property of a 2's complement number. A reduced representation for 2's complement numbers is provided to avoid sign-extension and the switching of sign-extension bits. The maximum magnitude of a 2's complement number is detected and its reduced representation is dynamically generated to represent the signal. A constant error introduced by the reduced representation is also dynamically compensated.