Tap antenna unit

Details Tap antenna unit Tap antenna unit

1998-01-21

2000-11-28

Grant, Chris

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

348 8, 348 12, 348734, 455 51, H04N 7173

Patent

active

061542040

ABSTRACT:
The tap antenna unit includes signal splitting circuitry, coupled to a coaxial cable which is servicing a consumer electronic device, such as a television set, for splitting off a signal from the coaxial cable; a filter coupled to an output of the signal splitting circuitry for selecting a low-level sharp frequency band in the energy spectrum of the coaxial cable; circuitry for demodulating a signal carried by the low-level frequency band; circuitry for modulating the output signal onto a carrier in an unlicensed frequency band; and an output antenna which is coupled to the modulating circuitry and which is capable of transmitting the output modulated signal over a limited transmitting-receiving area.

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patent: 5729824 (1998-03-01), O'Neill et al.
patent: 5826167 (1998-10-01), Jelinek et al.
patent: 5867763 (1999-02-01), Dean et al.
patent: 5870134 (1999-02-01), Laubach et al.

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