Multiple audio and video signal providing apparatus

Details Multiple audio and video signal providing apparatus Multiple audio and video signal providing apparatus

1996-09-09

1997-09-09

Kostak, Victor R.

Television

Special applications

Manufacturing

348385, H04N 710

Patent

active

056661517

ABSTRACT:
A video signal provider multiplexes digital video signals for four channels and provides a signal the bandwidth of which is limited to 6 MHz by RF-modulation. An analog video signal provider provides another signal the bandwidth of which is limited to 6 MHz by RF-modulation. A digital audio signal provider multiplexes digital audio signals for 32 channels and provides another signal the bandwidth of which is limited to 6 MHz by RF-modulation. Such signals are combined and transmitted through a coaxial cable 14 to a controller. In this example, such signal providing apparatus can provide a maximum of 84 channels (=126 MHz (the bandwidth for video signal of the coaxial cable)/6 MHz.times.4 ch), which number is significantly larger than the 20 channels provided in the prior art.

REFERENCES:
patent: 4704715 (1987-11-01), Shibagaki et al.
patent: 5216503 (1993-06-01), Paik et al.
patent: 5318450 (1994-06-01), Carver
patent: 5565908 (1996-10-01), Ahmad
patent: 5568484 (1996-10-01), Margis

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