Multiple audio and video signal providing apparatus
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United States of America Patent
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Sep 9, 1997
Issued Date -
N/A
app pub date -
Sep 9, 1996
filing date -
Jan 28, 1994
priority date (Note) -
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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.
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