Apparatus and methods for using compressed codes for monitoring

Details Apparatus and methods for using compressed codes for monitoring Apparatus and methods for using compressed codes for monitoring

1993-09-16

1996-07-02

Tran, Thai Q.

Television

Special applications

Manufacturing

455 2, 358335, H04N 700, H04N 710

Patent

active

055327320

ABSTRACT:
An apparatus and method for television audience monitoring includes an apparatus and method for determining that a television is turned on. Compressed codes, each representative of, and compressed in length from, the combination of a channel and a time-of-day for a program are retrieved from a television signal received by the television. Each compressed code is decoded and expanded into a channel and time-of-day for a program. The channel and time-of-day for a program are stored when the apparatus for determining that a television set is turned on indicates that the television set is turned on. Alternately, the compressed codes are stored. The decoding and expanding of the compressed code into channel and time-of-day is performed as a function of the clock output. Upon command the stored channel and time-of-day for a program or the stored compressed code for a program are sent over a telephone line.

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patent: 5187589 (1993-02-01), Kono et al.
patent: 5307173 (1994-04-01), Yuen et al.

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