Title:
DETECTOR FOR PATIENT OR THE LIKE
Document Type and Number:
Japanese Patent JP3586056
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To dissolve the malfunction of a receiver by amplitude noise.
SOLUTION: This detector is provided with a receiver R1 for detecting detected signals f2 cyclically intermittently transmitted from a portable transmitter carried by a poriomania patient or the like. The portable transmitter phase modulates carriers by transmission base signals S1 and forms the detected signals to be intermittently transmitted. The receiver is provided with a first multiplier 16 for multiplying delay signals S3 for which the detected signals are delayed for prescribed time to the received detected signals S2, an integrator 18 for integrating output signals from the first multiplier 16 and a second multiplier 19 for multiplying the delay signals S5 for which integrated output signals are delayed for the prescribed time to the integrated output signals S4 from the integrator 18 and detecting the presence/absence of the detected signals as the change of a DC level.
Inventors:
Nagato Muneto
Masahiko Takeda
Masahiko Takeda
Application Number:
JP35004296A
Publication Date:
November 10, 2004
Filing Date:
December 27, 1996
Export Citation:
Assignee:
Aiphone Co., Ltd.
International Classes:
A61B5/00; G01S13/78; G08B21/00; G08B21/22; H04B1/10; (IPC1-7): G08B21/22; H04B1/10
Domestic Patent References:
| JP7321700A | ||||
| JP3003422A | ||||
| JP2276324A | ||||
| JP10511455A |
Attorney, Agent or Firm:
Kazuo Moriya
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