JPS5613846A - Multiple control device - Google Patents

Multiple control device

Info

Publication number
JPS5613846A
JPS5613846A JP8949679A JP8949679A JPS5613846A JP S5613846 A JPS5613846 A JP S5613846A JP 8949679 A JP8949679 A JP 8949679A JP 8949679 A JP8949679 A JP 8949679A JP S5613846 A JPS5613846 A JP S5613846A
Authority
JP
Japan
Prior art keywords
interphone
base band
band signal
carrier
control device
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
JP8949679A
Other languages
Japanese (ja)
Inventor
Hitoshi Fukagawa
Isao Shimada
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP8949679A priority Critical patent/JPS5613846A/en
Publication of JPS5613846A publication Critical patent/JPS5613846A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/027—Frequency division multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PURPOSE:To reduce greatly the cost required for the wiring work, by attaching the carrier-type interphone station to the necessary master unit and slave units each and also connecting the interphone station to the exclusive 2-core line via the BPF. CONSTITUTION:Interphone stations 21, 22... with intervention of BPF3 plus master unit 5 and slave units 41, 42... with intervention of LPF7 are connected in parallel to exclusive 2-core line 1 for transmission of the base band signal in the multiple control device (which performs the time-division control by the base band signal system and consists of master unit 5 and many slave units 41, 42...) which is used also to the interphone system. BPF3 allows the passing of only the frequency component of the carrier signal and shut off the frequency component of the base band signal of the multiple control device. On the contrary, LPF7 permits the passing of only the base band signal and off the carrier signal of the carrier-type interphone respectively.
JP8949679A 1979-07-14 1979-07-14 Multiple control device Pending JPS5613846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8949679A JPS5613846A (en) 1979-07-14 1979-07-14 Multiple control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8949679A JPS5613846A (en) 1979-07-14 1979-07-14 Multiple control device

Publications (1)

Publication Number Publication Date
JPS5613846A true JPS5613846A (en) 1981-02-10

Family

ID=13972362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8949679A Pending JPS5613846A (en) 1979-07-14 1979-07-14 Multiple control device

Country Status (1)

Country Link
JP (1) JPS5613846A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6074760A (en) * 1983-09-30 1985-04-27 Toshiba Electric Equip Corp Interphone set
JPH04203101A (en) * 1990-11-30 1992-07-23 Giken Seisakusho Co Ltd Track laying method
DE112015002013B4 (en) 2014-04-25 2022-06-02 Denso Corporation gas sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6074760A (en) * 1983-09-30 1985-04-27 Toshiba Electric Equip Corp Interphone set
JPH04203101A (en) * 1990-11-30 1992-07-23 Giken Seisakusho Co Ltd Track laying method
DE112015002013B4 (en) 2014-04-25 2022-06-02 Denso Corporation gas sensor

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