JPS56117441A - Suppressing method for undesired electric wave in information collecting system - Google Patents

Suppressing method for undesired electric wave in information collecting system

Info

Publication number
JPS56117441A
JPS56117441A JP2210580A JP2210580A JPS56117441A JP S56117441 A JPS56117441 A JP S56117441A JP 2210580 A JP2210580 A JP 2210580A JP 2210580 A JP2210580 A JP 2210580A JP S56117441 A JPS56117441 A JP S56117441A
Authority
JP
Japan
Prior art keywords
signal
time
electric wave
transmission
time band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2210580A
Other languages
Japanese (ja)
Inventor
Kenji Kanayama
Shozo Shirasaki
Hirotaka Takahashi
Kenji Kawamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Sumitomo Electric Industries Ltd
Panasonic Holdings Corp
Original Assignee
Sumitomo Electric Industries Ltd
Omron Tateisi Electronics Co
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd, Omron Tateisi Electronics Co, Matsushita Electric Industrial Co Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP2210580A priority Critical patent/JPS56117441A/en
Publication of JPS56117441A publication Critical patent/JPS56117441A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Traffic Control Systems (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To enhance the reliability of an information collecting system, by always monitoring the level of the signal transmitted from a single-working type traffic signal and control the electric wave transmitted at the time excepting the normal time band of permission. CONSTITUTION:The central controller 5 decodes the signals sent from a center to control the terminal monitor system and at the same time, produces both the fault information and the working state information by the signals sent from the monitor system to send them to the transmitting circuit 4. At the same time, both the center control time band signal T1 and the time permission time band signal T2 are produced, and the electric wave is transmitted to the center when both time band signals are delivered. The unnecessary electric wave transmission preventing circuit delivers the fault signal K in case the signals T1 and T2 are put into the AND circuit 10 via the NOT circuits 8 and 9 with an input of the detection signal S of the transmission level detecting circuit 7 and the signal S is delivered at the time excepting the normal transmission time band. Then a process to discontinue a transmission of the electric wave is carried out by the signal K.
JP2210580A 1980-02-22 1980-02-22 Suppressing method for undesired electric wave in information collecting system Pending JPS56117441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2210580A JPS56117441A (en) 1980-02-22 1980-02-22 Suppressing method for undesired electric wave in information collecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2210580A JPS56117441A (en) 1980-02-22 1980-02-22 Suppressing method for undesired electric wave in information collecting system

Publications (1)

Publication Number Publication Date
JPS56117441A true JPS56117441A (en) 1981-09-14

Family

ID=12073604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2210580A Pending JPS56117441A (en) 1980-02-22 1980-02-22 Suppressing method for undesired electric wave in information collecting system

Country Status (1)

Country Link
JP (1) JPS56117441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7120457B2 (en) 1996-11-27 2006-10-10 Hitachi, Ltd. Transmission control method and apparatus for mobile communication system
JP2007041892A (en) * 2005-08-04 2007-02-15 Honda Motor Co Ltd Encoder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045505A (en) * 1973-08-27 1975-04-23
JPS5494207A (en) * 1978-01-10 1979-07-25 Hitachi Denshi Ltd Polling time slot system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045505A (en) * 1973-08-27 1975-04-23
JPS5494207A (en) * 1978-01-10 1979-07-25 Hitachi Denshi Ltd Polling time slot system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7120457B2 (en) 1996-11-27 2006-10-10 Hitachi, Ltd. Transmission control method and apparatus for mobile communication system
US7421283B2 (en) 1996-11-27 2008-09-02 Hitachi Communication Technologies, Ltd. Transmission power control method and apparatus for mobile communication system
JP2007041892A (en) * 2005-08-04 2007-02-15 Honda Motor Co Ltd Encoder

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