Paid broadcast receiving device with connection detecting capabi

Details Paid broadcast receiving device with connection detecting capabi Paid broadcast receiving device with connection detecting capabi

1994-07-27

1996-10-29

Tran, Thai Q.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

348705, 380 5, 386113, H04N 576

Patent

active

055701981

ABSTRACT:
A paid broadcast receiving device has a decoder connection detector for determining whether or not a video cassette recorder (VCR) and a canal+ decoder are connected. The determination depends on an impedance match between the VCR and decoder when a canal+ broadcast channel is selected after the canal+ channel is stored in a system where a VCR is to be connected to a canal+ decoder and a television. The system thereby receives and/or records canal+ broadcasts without a decoder, for paid broadcasts sent via a public line, even if the canal+ decoder is not connected to the VCR. Users are able to easily judge whether or not the canal+ decoder is connected.

REFERENCES:
patent: 4774575 (1988-09-01), Takayama
patent: 4995079 (1991-02-01), Kim
patent: 5040076 (1991-08-01), Tenma
patent: 5091787 (1992-02-01), Watanabe et al.
patent: 5208517 (1993-05-01), Beppu

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