Method and device for data capture in television viewers researc

Details Method and device for data capture in television viewers researc Method and device for data capture in television viewers researc

1995-01-13

1997-03-04

Lee, Michael

Television

Special applications

Manufacturing

348725, H04N 700

Patent

active

056084455

ABSTRACT:
A device for the monitoring of a video installation is disclosed which does not need any intervention into the video sets (television set (4), video recorders (2, 3)). Signal pulses are superimposed on the television or the video signals at the antenna connection (1) and/or the video inputs (7, 8, 10). The superimposition is effected synchroneously to the signal appearing at the respective input (1, 7, 8, 10) in the range of the picture information of a preferably invisible picture line under the control of a processor (14). The burst may also be used for the introduction of digital data which characterize the television or video signal. The retrieval of the burst at the television set (4) is effected either at its video output (10) or by means of a probe (19) fastened at the exterior near the picture tube. For determining the programme reproduced by the television set (4), the presence of the burst as such or the data it contains are sufficient.

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