JPS5531381A - Interphone device - Google Patents

Interphone device

Info

Publication number
JPS5531381A
JPS5531381A JP10528378A JP10528378A JPS5531381A JP S5531381 A JPS5531381 A JP S5531381A JP 10528378 A JP10528378 A JP 10528378A JP 10528378 A JP10528378 A JP 10528378A JP S5531381 A JPS5531381 A JP S5531381A
Authority
JP
Japan
Prior art keywords
talking
speaker
amplifier
oscillator
switch
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
JP10528378A
Other languages
English (en)
Other versions
JPS5857945B2 (ja
Inventor
Hiroshi Kito
Seiki Sasaki
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 JP10528378A priority Critical patent/JPS5857945B2/ja
Publication of JPS5531381A publication Critical patent/JPS5531381A/ja
Publication of JPS5857945B2 publication Critical patent/JPS5857945B2/ja
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Alarm Systems (AREA)
JP10528378A 1978-08-28 1978-08-28 インタ−ホン装置 Expired JPS5857945B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10528378A JPS5857945B2 (ja) 1978-08-28 1978-08-28 インタ−ホン装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10528378A JPS5857945B2 (ja) 1978-08-28 1978-08-28 インタ−ホン装置

Publications (2)

Publication Number Publication Date
JPS5531381A true JPS5531381A (en) 1980-03-05
JPS5857945B2 JPS5857945B2 (ja) 1983-12-22

Family

ID=14403339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10528378A Expired JPS5857945B2 (ja) 1978-08-28 1978-08-28 インタ−ホン装置

Country Status (1)

Country Link
JP (1) JPS5857945B2 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863694U (ja) * 1981-10-19 1983-04-28 アイホン株式会社 ２個の警報機能付インタ−ホン方式
JPS5938898A (ja) * 1982-08-27 1984-03-02 ホーチキ株式会社 インタ−ホン設備を利用した住戸外警報装置
JPS6076482U (ja) * 1983-10-31 1985-05-28 松下電工株式会社 警報表示付きドアホン子器
JPH02130097U (ja) * 1990-01-18 1990-10-26

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863694U (ja) * 1981-10-19 1983-04-28 アイホン株式会社 ２個の警報機能付インタ−ホン方式
JPS5938898A (ja) * 1982-08-27 1984-03-02 ホーチキ株式会社 インタ−ホン設備を利用した住戸外警報装置
JPS6076482U (ja) * 1983-10-31 1985-05-28 松下電工株式会社 警報表示付きドアホン子器
JPH02130097U (ja) * 1990-01-18 1990-10-26

Also Published As

Publication number Publication date
JPS5857945B2 (ja) 1983-12-22

Similar Documents

Publication Publication Date Title
JPS5660741A (en) Transmission device of warning information for vehicle
JPS5531381A (en) Interphone device
KR890005991A (ko) 잡음억압회로
US2898405A (en) Listening device
JPS56111307A (en) Amplifying device
JPS54114011A (en) Loudspeaker telephone device
JPS5671344A (en) Car telephone with speaker
JPS5514774A (en) Output limit amplifier circuit
GB1037383A (en) An improved electrical alarm system
JPS57127343A (en) Talking system of optical fiber interphone
JPS58206244A (ja) コ−ドレス電話の送受信装置
GB1350142A (en) Controllable attenuator
GB936756A (en) Improvements in or relating to loudspeaking telephone systems
JPH0358223B2 (ja)
JPS5496905A (en) Interphone device
JPS5459014A (en) Talking device
JPS5726958A (en) Interphone device
GB869895A (en) Improvements relating to communication apparatus
JPS56107638A (en) Current switch circuit
JPS5787269A (en) Telephone set circuit
JPS5579725A (en) Alarm device for automobile
JPS5746530A (en) Switching circuit
JPS57173250A (en) Voice switch circuit
JPS6486747A (en) Door phone circuit
GB1162633A (en) Electrical Switch Circuits