LOCAL DISASTER PREVENTION DIGITAL RADIO BROADCAST SYSTEM

摘要

PROBLEM TO BE SOLVED: To solve the problem that in a conventional local disaster prevention digital radio broadcast system, there is no other free slot available so that only single broadcast is allowed at a time because five of six slots including a control channel are used for public-address.;SOLUTION: Public-address receivers 3 and 5 include memory devices 31 and 51 for recoding voice. Home receivers 4 and 6 include memory devices 41 and 61 for recording voice. Voice information with different contents are respectively recorded in the memory devices 31, 41, 51 and 61. A control signal transmitted from master station radio equipment 2 reproduces the voice recorded in the memory devices 31, 41, 51 and 61 according to a command from a console panel 1. Then, the local disaster prevention digital radio broadcast system can simultaneously perform voice broadcast with different contents to each home receiver without causing line shortage.;COPYRIGHT: (C)2010,JPO&INPIT