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:
May. 16, 2000
Filed:
May. 09, 1997
Applicant:
Inventors:
Shao Wei Pan, Schaumburg, IL (US);
Shay-Ping T Wang, Long Grove, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
708517 ; 708277 ; 341 75 ;
Abstract
A digital log converter is provided which includes a comparator (10) and a log signal generator (20). Upon receiving a digital input signal (12), the comparator (10) determines whether an upper bit-slice of the input signal (12) equals zero. If the upper bit-slice is zero, the log signal generator (20) subtracts an offset from at least one parameter to generate a log signal (16); otherwise, the log signal generator (20) interpolates the at least one parameter and a lower bit-slice of the input signal (12) to generate the log signal (16).