JPS527608A - Simultaneous communication interphone - Google Patents

Simultaneous communication interphone

Info

Publication number
JPS527608A
JPS527608A JP8424475A JP8424475A JPS527608A JP S527608 A JPS527608 A JP S527608A JP 8424475 A JP8424475 A JP 8424475A JP 8424475 A JP8424475 A JP 8424475A JP S527608 A JPS527608 A JP S527608A
Authority
JP
Japan
Prior art keywords
simultaneous communication
communication interphone
interphone
simultaneous
interrruption
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
JP8424475A
Other languages
Japanese (ja)
Other versions
JPS5746264B2 (en
Inventor
Juhei Takahashi
Hiroo Mafune
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 JP8424475A priority Critical patent/JPS527608A/en
Priority to US05/652,847 priority patent/US4051325A/en
Priority to CA244,584A priority patent/CA1048186A/en
Publication of JPS527608A publication Critical patent/JPS527608A/en
Publication of JPS5746264B2 publication Critical patent/JPS5746264B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To facilitate the interrruption in simultaneous communication interphone.
JP8424475A 1975-01-31 1975-07-08 Simultaneous communication interphone Granted JPS527608A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8424475A JPS527608A (en) 1975-07-08 1975-07-08 Simultaneous communication interphone
US05/652,847 US4051325A (en) 1975-01-31 1976-01-27 Speech intercommunication system
CA244,584A CA1048186A (en) 1975-01-31 1976-01-30 Speech intercommunication systems particularly for hands-free loudspeaker telephones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8424475A JPS527608A (en) 1975-07-08 1975-07-08 Simultaneous communication interphone

Publications (2)

Publication Number Publication Date
JPS527608A true JPS527608A (en) 1977-01-20
JPS5746264B2 JPS5746264B2 (en) 1982-10-02

Family

ID=13825038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8424475A Granted JPS527608A (en) 1975-01-31 1975-07-08 Simultaneous communication interphone

Country Status (1)

Country Link
JP (1) JPS527608A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221381A (en) * 1982-06-17 1983-12-23 Ebara Corp Waste heat retrieving type heat exchanger
JPS59124871U (en) * 1983-02-07 1984-08-22 松下電器産業株式会社 heat exchange equipment

Also Published As

Publication number Publication date
JPS5746264B2 (en) 1982-10-02

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