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:
Nov. 11, 2003
Filed:
Aug. 16, 2002
Jari A. Parviainen, Jääli, FI;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to a method and digital signal processing equipment for performing a digital signal processing calculation, the method employing a look-up table in which predetermined numerical values, which are inverse values of square roots of numbers, have been stored. In the method, the look-up table is searched for the inverse value of the square root of a desired number. If the value is found in the look-up table, it is retrieved. If the value is not found in the look-up table, the number is scaled such that the inverse value of the square root of the scaled number is found in the look-up table. The found value is then retrieved from the look-up table and descaled to produce the inverse value of the square root of the number. The inverse value of the square root of the number is used to carry out a calculation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile