Telecommunications – Audience survey or program distribution use accounting
Patent
1996-02-26
2000-03-07
Peng, John K.
Telecommunications
Audience survey or program distribution use accounting
348 1, 348 2, 348 6, 348 12, 455 31, 455 61, 380 19, 375200, H04N 700, H04N 710
Patent
active
060351772
ABSTRACT:
A communication system for simultaneously transmitting ancillary codes and audio signals via a conventional audio communications channel using perceptual coding techniques is disclosed. An encoder monitors an audio channel to detect "opportunities" to insert an ancillary code such that the inserted signals are masked by the audio signal, as defined by the "perceptual entropy envelope" of the audio signal. An ancillary code containing, for example, an ID or serial number, is encoded as one or more whitened spread spectrum signals and/or a narrowband FSK ancillary code and transmitted at a time, frequency and/or level such that the data signal is masked by the audio signal. A decoder at a receiving location recovers the encoded ID or serial number.
REFERENCES:
patent: 3684838 (1972-08-01), Kahn
patent: 3696298 (1972-10-01), Kahn et al.
patent: 3735048 (1973-05-01), Tomsa et al.
patent: 3885217 (1975-05-01), Clintron
patent: 4379947 (1983-04-01), Warner
patent: 4425642 (1984-01-01), Moses et al.
patent: 4425661 (1984-01-01), Moses et al.
patent: 4429404 (1984-01-01), Mai
patent: 4581746 (1986-04-01), Arnold
patent: 4672605 (1987-06-01), Hustig et al.
patent: 4688255 (1987-08-01), Kahn
patent: 4972471 (1990-11-01), Gross et al.
patent: 5079647 (1992-01-01), Nenezu et al.
patent: 5213337 (1993-05-01), Sherman
patent: 5285498 (1994-02-01), Johnston
patent: 5457807 (1995-10-01), Weinblatt
patent: 5473631 (1995-12-01), Moses
patent: 5581800 (1996-12-01), Fardeau et al.
patent: 5630203 (1997-05-01), Weinblatt
patent: 5680179 (1997-10-01), D'Alto et al.
patent: 5754661 (1998-05-01), Weinfurtner
patent: 5764763 (1998-06-01), Jensen et al.
Rundfunktech Nische Mitteilungen, vol. 38, No. 3, Jun. 1, 1994, pp. 92-103, Schultze K: Equipment for the Automatic Electronic Registration of "Airplays" and Commercial Spots.
Lu Daozheng
Moses Donald Wadia
Lo Linus H.
Moses Donald W.
Nielsen Media Research
Peng John K.
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