JPS57152262A - Audio switch circuit - Google Patents

Audio switch circuit

Info

Publication number
JPS57152262A
JPS57152262A JP3712481A JP3712481A JPS57152262A JP S57152262 A JPS57152262 A JP S57152262A JP 3712481 A JP3712481 A JP 3712481A JP 3712481 A JP3712481 A JP 3712481A JP S57152262 A JPS57152262 A JP S57152262A
Authority
JP
Japan
Prior art keywords
circuit
potential
transmission
output
comparison
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
JP3712481A
Other languages
English (en)
Other versions
JPS6331143B2 (ja
Inventor
Tetsuo Ishizaka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3712481A priority Critical patent/JPS57152262A/ja
Publication of JPS57152262A publication Critical patent/JPS57152262A/ja
Publication of JPS6331143B2 publication Critical patent/JPS6331143B2/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)
JP3712481A 1981-03-13 1981-03-13 Audio switch circuit Granted JPS57152262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3712481A JPS57152262A (en) 1981-03-13 1981-03-13 Audio switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3712481A JPS57152262A (en) 1981-03-13 1981-03-13 Audio switch circuit

Publications (2)

Publication Number Publication Date
JPS57152262A true JPS57152262A (en) 1982-09-20
JPS6331143B2 JPS6331143B2 (ja) 1988-06-22

Family

ID=12488849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3712481A Granted JPS57152262A (en) 1981-03-13 1981-03-13 Audio switch circuit

Country Status (1)

Country Link
JP (1) JPS57152262A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167357A (ja) * 1984-09-11 1986-04-07 Matsushita Electric Ind Co Ltd ハンドフリ−電話装置
JPS6196854A (ja) * 1984-10-18 1986-05-15 Rohm Co Ltd 送受切換装置
JPS6212249A (ja) * 1985-07-09 1987-01-21 Toa Tokushu Denki Kk 音声スイツチ装置
JPS62130048A (ja) * 1985-12-02 1987-06-12 Rohm Co Ltd 音声スイツチ回路

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167357A (ja) * 1984-09-11 1986-04-07 Matsushita Electric Ind Co Ltd ハンドフリ−電話装置
JPH0262068B2 (ja) * 1984-09-11 1990-12-21 Matsushita Electric Ind Co Ltd
JPS6196854A (ja) * 1984-10-18 1986-05-15 Rohm Co Ltd 送受切換装置
JPS6212249A (ja) * 1985-07-09 1987-01-21 Toa Tokushu Denki Kk 音声スイツチ装置
JPH055420B2 (ja) * 1985-07-09 1993-01-22 Toa Electric Co Ltd
JPS62130048A (ja) * 1985-12-02 1987-06-12 Rohm Co Ltd 音声スイツチ回路

Also Published As

Publication number Publication date
JPS6331143B2 (ja) 1988-06-22

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