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. 17, 2011
Filed:
Dec. 14, 2007
Brian D. Storm, Round Lake Beach, IL (US);
John R. Barr, Deer Park, IL (US);
Kevin J. Bush, Northville, MI (US);
Gregory W. Chance, Round Lake Beach, IL (US);
Brian D. Storm, Round Lake Beach, IL (US);
John R. Barr, Deer Park, IL (US);
Kevin J. Bush, Northville, MI (US);
Gregory W. Chance, Round Lake Beach, IL (US);
Motorola Mobility, Inc., Libertyville, IL (US);
Abstract
A method and apparatus for detecting a frequency band and mode of operation using recursive sampling and narrowing down is disclosed. The method comprises sampling () by a multi-mode wireless communication device, a broad operational frequency spectrum at a first sampling rate to produce a first set of discrete signal samples. Then, the wireless communication device compares () at least one of the energy graphs of the first set of discrete signal samples with at least one protocol-specific signature to confirm (), if an approximate match is found. When one or more approximate matches are found, the wireless communication device narrows down () the broad frequency spectrum to a reduced set of frequency band(s) that correspond to the matched protocol-specific signature(s). Then the steps of sampling (), comparing (), confirming (), and narrowing down () are recursively followed till a frequency band and mode of operation is confirmed.