Method and apparatus for recognizing broadcast information using

Details Method and apparatus for recognizing broadcast information using Method and apparatus for recognizing broadcast information using

1992-11-09

1995-07-25

Eisenzopf, Reinhard J.

Telecommunications

Audience survey or program distribution use accounting

348 1, 364487, 382191, 395 216, H04H 900, H04N 700, H04N 1704, G06F 1715

Patent

active

054370507

ABSTRACT:
A method and apparatus for recognizing broadcast information, the method including the steps of receiving a set of broadcast information; converting the set of broadcast information into a frequency representation of the set of broadcast information; dividing the frequency representation into a predetermined number of frequency segments, each frequency segment representing one of the frequency bands associated with the semitones of the music scale; forming an array, wherein the number of elements in the array correspond to the predetermined number of frequency segments, and wherein each frequency segment with a value greater than a threshold value is represented by binary 1 and all other frequency segments are represented by binary 0; comparing the array to a set of reference arrays, each reference array representing a previously identified unit of information; determining, based on the comparison, whether the set of broadcast information is the same as any of the previously identified units of broadcast information.

REFERENCES:
patent: 2947971 (1960-08-01), Glauberman et al.
patent: 4739398 (1988-04-01), Thomas et al.
patent: 4843562 (1989-06-01), Kenyon et al.
patent: 4947436 (1990-08-01), Greaves et al.
patent: 5261010 (1993-11-01), Lo et al.
Young, Jeffrey, "You're Playing My Song", Forbes, Jul. 5, 1993, pp. 114-115.

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