Triax transmitter and receiver interfaces and transmission...

Details Triax transmitter and receiver interfaces and transmission... Triax transmitter and receiver interfaces and transmission...

2005-06-27

2009-08-18

Tran, Trang U (Department: 2622)

Television

Television transmitter circuitry

C348S433100, C348S441000, C348S475000

Reexamination Certificate

active

07576804

ABSTRACT:
A triax transmitter interface for transmitting a video signal on a triax cable comprises a video signal input port, a first modulator for modulating a luminance component of a video signal received at said input port onto a first carrier and a second modulator for modulating a chrominance component of the video signal onto a second carrier, and a triax output port for outputting said modulated carriers to a triax cable. The first modulator is a quadrature modulator adapted to modulate luminance components of two video image lines simultaneously and in quadrature onto said first carrier. A receiver interface has a quadrature demodulator for restoring the luminance component.

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