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. 26, 2009
Filed:
Jan. 26, 2005
Arthur Torosyan, La Crescenta, CA (US);
Arthur Torosyan, La Crescenta, CA (US);
Pentomics, Inc., Pasadena, CA (US);
Abstract
An improved DDFS includes a minority-bit detector to permit a series of cascaded transformation stages to perform half or less than half of the rotational operations otherwise required by detecting whether the required rotation or non-rotation operations are in the minority and performing only the operations in the minority. This substantially reduces the number of minority-select butterfly stages that would otherwise be required. The cascaded transformation stages include a preliminary set of lookup tables in ROM memory, one of which is selected in accordance with the minority-bit detector and may include a subsequent set of butterfly stages providing the inputs to the minority-select butterfly stages.