Cable television return display unit

Details Cable television return display unit Cable television return display unit

1997-03-11

1999-09-21

Flynn, Nathan

Television

Special applications

Manufacturing

348192, 348184, H04N 1700

Patent

active

059560746

ABSTRACT:
A cable television monitoring system to monitor the return signals of a CATV system is disclosed. The system monitors the CATV system in a frequency range of 5-225 MHz and measures voltage and frequency parameters. The system provides an analysis in NTSC compatible base-band video which, when modulated to TV channel frequency and sent downstream in a cable TV system can be received at any point in a cable TV system.

REFERENCES:
patent: 4007423 (1977-02-01), Dickerson
patent: 4520508 (1985-05-01), Reichert, Jr.
patent: 4700222 (1987-10-01), Large et al.
Eldering et al, CATV Return Path Characterization for Reliable Communications, IEEE Aug. 1995.
Zhang et al, Automatic Monitoring of the Quality of Cable Television Pictures, IEEE Sep. 1992.

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