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Title:
MONITORING APPARATUS AND ALARMING APPARATUS
Document Type and Number:
Japanese Patent JP2009016981
Kind Code:
A
Abstract:

To return a control result or data by determining a wireless link or a wired link used for line control and by using a controlled line.

The apparatus is provided with: a wireless unit 1 for communication via the wireless link; a transmitting unit 2 for communication via the wired link; a branching input/output unit 3 for coupling and distributing communication data; a transmission control unit 5 for communication of an output of the branching input/output unit 3 via a modem 4; a squelch receiving unit 7 for receiving a squelch signal from the wireless unit 1; an address setting unit 8 to which the own station number is set; and a CPU 6 for determining control with the wireless link or wired link depending on whether the squelch receiving unit 7 provides an output by receiving the outputs of the transmission control unit 5 and the squelch receiving unit 7 and for transmitting data from the line controlled when the communication data can be detected as data of the own station by determining whether the communication data is data of the own station with reference to the address setting unit 8.


Inventors:
SASADA SHINJI
Application Number:
JP2007173738A
Publication Date:
January 22, 2009
Filing Date:
July 02, 2007
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H04M11/00; G08B25/00; G08B25/08; G08B25/10; G08B27/00
Domestic Patent References:
JP2002320285A2002-10-31
JP2004171474A2004-06-17
JP2000251188A2000-09-14
Attorney, Agent or Firm:
Keigo Murakami
Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo