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:
Jan. 27, 2004
Filed:
Nov. 09, 2000
David G. Worthy, Gilbert, AZ (US);
Other;
Abstract
A survey system ( ) is configured to identify radio stations ( ) to which tuners ( ) are tuned. The tuners ( ) have predetermined signals ( ) emitted therefrom. In one embodiment, the survey system ( ) employs a method ( ) which includes selecting one of the predetermined signals ( ), receiving at a receiver ( ) a second signal ( ), and determining that one of the tuners ( ) is tuned to one of the radio stations ( ) when a harmonic ( ) of the fundamental frequency ( ) of the predetermined signal ( ) is detected within the second signal ( ). In an alternative embodiment, the survey system ( ) employs a method ( ) that includes generating and broadcasting a survey signal ( ) that is a one of the predetermined signals ( ) modified to incorporate a signal identifier ( ). The method ( ) further includes detecting a harmonic ( ) of the fundamental frequency ( ) of the predetermined signal ( ) within a received second signal ( ) and determining that one of the tuners ( ) is tuned to one of the radio stations ( ) when the detected harmonic ( ) includes the signal identifier ( ).