JPS5320708A - Master-slave type interphone unit - Google Patents

Master-slave type interphone unit

Info

Publication number
JPS5320708A
JPS5320708A JP9573876A JP9573876A JPS5320708A JP S5320708 A JPS5320708 A JP S5320708A JP 9573876 A JP9573876 A JP 9573876A JP 9573876 A JP9573876 A JP 9573876A JP S5320708 A JPS5320708 A JP S5320708A
Authority
JP
Japan
Prior art keywords
master
slave type
interphone unit
type interphone
slave units
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.)
Granted
Application number
JP9573876A
Other languages
Japanese (ja)
Other versions
JPS5912064B2 (en
Inventor
Katsuhiro Komorida
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 Holdings Corp
Original Assignee
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9573876A priority Critical patent/JPS5912064B2/en
Publication of JPS5320708A publication Critical patent/JPS5320708A/en
Publication of JPS5912064B2 publication Critical patent/JPS5912064B2/en
Expired 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

Landscapes

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

Abstract

PURPOSE:To eliminate the individual wiring between the master and slave units by transmitting a pulse of minimum speed, and to achieve a parallel connection for many slave units to a small number of the common lead wire.
JP9573876A 1976-08-10 1976-08-10 Parent-child intercom device Expired JPS5912064B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9573876A JPS5912064B2 (en) 1976-08-10 1976-08-10 Parent-child intercom device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9573876A JPS5912064B2 (en) 1976-08-10 1976-08-10 Parent-child intercom device

Publications (2)

Publication Number Publication Date
JPS5320708A true JPS5320708A (en) 1978-02-25
JPS5912064B2 JPS5912064B2 (en) 1984-03-21

Family

ID=14145816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9573876A Expired JPS5912064B2 (en) 1976-08-10 1976-08-10 Parent-child intercom device

Country Status (1)

Country Link
JP (1) JPS5912064B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259890A (en) * 1985-05-07 1985-12-21 Agency Of Ind Science & Technol Latent heat type heat accumulator of direct heat exchange system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259890A (en) * 1985-05-07 1985-12-21 Agency Of Ind Science & Technol Latent heat type heat accumulator of direct heat exchange system
JPH0311399B2 (en) * 1985-05-07 1991-02-15 Kogyo Gijutsuin

Also Published As

Publication number Publication date
JPS5912064B2 (en) 1984-03-21

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