Title:
RADIO NOTICE TRANSMITTER-RECEIVER
Document Type and Number:
Japanese Patent JP2984565
Kind Code:
B2
Abstract:
PURPOSE: To ensure monitoring of a notice signaling and a signaling content of the radio notice transmitter-receiver.
CONSTITUTION: A radio notice transmission reception circuit 1 uses a receiver 11 to receive a 1st radio wave including a notice signal from a radio notice transmission station via an antenna 2 and the notice is sound from a speaker 3. A storage circuit 15 stores a digitized notice signal S3. A storage circuit 19 stores a digitized notice signal S4 picked up by a microcomputer 4. A comparator 18 compares a storage content S3 of the storage circuit 15 with a storage circuit S4 of the storage circuit 19. A notice acknowledge signal being the result of comparison is fed to the radio notice transmission station via an encode circuit 17, a transmitter 16, a switch 22 and the antenna 2 by the 2nd radio wave.
Inventors:
YAZAWA KAZUO
Application Number:
JP383295A
Publication Date:
November 29, 1999
Filing Date:
January 13, 1995
Export Citation:
Assignee:
NIPPON DENKI IDO TSUSHIN KK
International Classes:
H04B1/40; H04H20/00; H04H20/12; H04H20/61; (IPC1-7): H04H1/00; H04B1/40
Domestic Patent References:
| JP1235426A | ||||
| JP62172498U |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)