JPS5917765A - 電力線搬送式インタ−ホン装置 - Google Patents

電力線搬送式インタ−ホン装置

Info

Publication number
JPS5917765A
JPS5917765A JP57128115A JP12811582A JPS5917765A JP S5917765 A JPS5917765 A JP S5917765A JP 57128115 A JP57128115 A JP 57128115A JP 12811582 A JP12811582 A JP 12811582A JP S5917765 A JPS5917765 A JP S5917765A
Authority
JP
Japan
Prior art keywords
circuit
transmission
power line
speaker
signal
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
JP57128115A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0127621B2 (enrdf_load_stackoverflow
Inventor
Hideaki Yatabe
英昭 矢田部
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 JP57128115A priority Critical patent/JPS5917765A/ja
Publication of JPS5917765A publication Critical patent/JPS5917765A/ja
Publication of JPH0127621B2 publication Critical patent/JPH0127621B2/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)
  • Transceivers (AREA)
JP57128115A 1982-07-21 1982-07-21 電力線搬送式インタ−ホン装置 Granted JPS5917765A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57128115A JPS5917765A (ja) 1982-07-21 1982-07-21 電力線搬送式インタ−ホン装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57128115A JPS5917765A (ja) 1982-07-21 1982-07-21 電力線搬送式インタ−ホン装置

Publications (2)

Publication Number Publication Date
JPS5917765A true JPS5917765A (ja) 1984-01-30
JPH0127621B2 JPH0127621B2 (enrdf_load_stackoverflow) 1989-05-30

Family

ID=14976744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57128115A Granted JPS5917765A (ja) 1982-07-21 1982-07-21 電力線搬送式インタ−ホン装置

Country Status (1)

Country Link
JP (1) JPS5917765A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0178961U (enrdf_load_stackoverflow) * 1987-11-16 1989-05-26
JP2011098072A (ja) * 2009-11-06 2011-05-19 Toshiba Corp 超音波診断装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475206A (en) * 1977-11-28 1979-06-15 Konii Onkiyou Kk Carrier interphone having speech indicator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475206A (en) * 1977-11-28 1979-06-15 Konii Onkiyou Kk Carrier interphone having speech indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0178961U (enrdf_load_stackoverflow) * 1987-11-16 1989-05-26
JP2011098072A (ja) * 2009-11-06 2011-05-19 Toshiba Corp 超音波診断装置

Also Published As

Publication number Publication date
JPH0127621B2 (enrdf_load_stackoverflow) 1989-05-30

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