JPS59183569A - 親子式多局インタ−ホン等の異常検出回路 - Google Patents

親子式多局インタ−ホン等の異常検出回路

Info

Publication number
JPS59183569A
JPS59183569A JP58058112A JP5811283A JPS59183569A JP S59183569 A JPS59183569 A JP S59183569A JP 58058112 A JP58058112 A JP 58058112A JP 5811283 A JP5811283 A JP 5811283A JP S59183569 A JPS59183569 A JP S59183569A
Authority
JP
Japan
Prior art keywords
detection circuit
transistor
parent
abnormality
abnormality detection
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
JP58058112A
Other languages
English (en)
Japanese (ja)
Other versions
JPH038625B2 (OSRAM
Inventor
Kouzou Kasao
笠尾　幸三
Shinya Matsukura
信哉 松倉
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 JP58058112A priority Critical patent/JPS59183569A/ja
Publication of JPS59183569A publication Critical patent/JPS59183569A/ja
Publication of JPH038625B2 publication Critical patent/JPH038625B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP58058112A 1983-04-01 1983-04-01 親子式多局インタ−ホン等の異常検出回路 Granted JPS59183569A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58058112A JPS59183569A (ja) 1983-04-01 1983-04-01 親子式多局インタ−ホン等の異常検出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58058112A JPS59183569A (ja) 1983-04-01 1983-04-01 親子式多局インタ−ホン等の異常検出回路

Publications (2)

Publication Number Publication Date
JPS59183569A true JPS59183569A (ja) 1984-10-18
JPH038625B2 JPH038625B2 (OSRAM) 1991-02-06

Family

ID=13074891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58058112A Granted JPS59183569A (ja) 1983-04-01 1983-04-01 親子式多局インタ−ホン等の異常検出回路

Country Status (1)

Country Link
JP (1) JPS59183569A (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62112460A (ja) * 1985-11-12 1987-05-23 Aihon Kk ナスコ−ル用インタ−ホン装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62112460A (ja) * 1985-11-12 1987-05-23 Aihon Kk ナスコ−ル用インタ−ホン装置

Also Published As

Publication number Publication date
JPH038625B2 (OSRAM) 1991-02-06

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