Two-way CATV system with AML commands
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United States of America Patent
Stats
-
Nov 19, 1985
Issued Date -
N/A
app pub date -
Sep 6, 1984
filing date -
Dec 9, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a two-way cable television (CATV) system, multiple subscriber address codes are provided during designated vertical blanking interval (VBI) lines of the video signal transmitted from the CATV headend to a plurality of system subscriber terminals. Each subscriber terminal is provided with a decoder in which is stored subscriber unique address code for comparison with the received subscriber address codes. If there is an address match, an address match latch (AML) signal is generated for each VBI line address match. The address match signals thus generated from a multibit pulse coded downstream command signal for initiating various functions in the CATV system, e.g., acknowledging subscriber upstream requests, subscriber interrogation, power adjustment, etc.
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Family
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Cited Art Landscape
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