Television distribution system for signal substitution

Details Television distribution system for signal substitution Television distribution system for signal substitution

2005-09-06

2005-09-06

Srivatava, Vivek (Department: 2611)

Interactive video distribution systems

Use surveying or monitoring

C725S035000, C704S010000

Reexamination Certificate

active

06941573

ABSTRACT:
A cable television distribution system in which the head end substitutes different channels for a plurality of separated geographic zones. The head end creates a plurality of channel spectrums and transmits the spectrums on distribution trunks such that a different spectrum may be present on each distribution trunk. The spectrums on the distribution trunks are connected to zones of the viewer community which have been selected for market research purposes on the basis of demographics. Product sales collection units are provided at stores throughout the community served by the cable television distribution to collect consumer purchase data for market research purposes.

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