Audio distribution system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 8, 1994
Issued Date -
N/A
app pub date -
Jan 9, 1992
filing date -
Jan 9, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal distribution and communication arrangement controls the broadcast of different types of signals through speakers located in various zones. The system includes a telephone interfaced with a door speaker controller to allow communication between the telephone and a door speaker. A page may be broadcast over the speakers and subsequently muted to allow private communication when the page is answered. Also included is a doorbell interface circuit that responds to a doorbell source. The doorbell source may be activated by any one of a plurality of doorbell switches.
First Claim
Family
International Classification(s)
Cited Art Landscape
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