Patent ID: 6999715
Filing Date: 2006-02-14
Classification: H04H

Abstract:
1. A broadcast-signal source identification method, comprising, in combination, (a) receiving calls from one or more telephones; (b) digitizing all or part of the audio-frequency content of said received telephone calls; (c) receiving broadcast signals from one or more known sources at substantially the same time as the received telephone calls; (d) digitizing all or part of the audio-frequency content of said received broadcast signals; (e) comparing the digitized contents of the received telephone calls to the digitized contents of the received broadcast signals to determine the degree of match between the received telephone calls and the received broadcast signals; (f) sensing the presence of broadcast signals in said received telephone calls based on said degree of match; (g) recognizing the source of matching broadcast signals based on the identities of the known broadcast sources.