SYSTEM FOR TWO-CABLE BROADCASTING WITH NOTIFICATION Russian patent published in 2004 - IPC

FIELD: communication technologies.

SUBSTANCE: system has notification equipment connected to central station of cable broadcasting, output of which is connected by connecting line to input of supporting amplifying station, outputs of which through feeder lines are connected to transformer substations, outputs of which through subscriber lines are connected to subscriber receivers, while equipment for notification includes code transmitter, in feeder or subscriber lines code transformers are switched, not of tone frequency, and in subscriber receivers transferred signals get onto frequency filters separating transferred signals on channel of tone frequency and channel of non-tone frequency, while to the output of tone frequency channel a volume regulator is connected and an electronic contact, and to other ends of regulator and electronic contact a speaker is connected, voltage, received at output from non-tone frequency channel, is sent through frequency separator into control output of electronic contact.

EFFECT: possible selective searching notification communication and increased number of subscribers informed about emergency situation.

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