JPS5660179A - Coupler between interphone and television signal transmitter - Google Patents

Coupler between interphone and television signal transmitter

Info

Publication number
JPS5660179A
JPS5660179A JP13511879A JP13511879A JPS5660179A JP S5660179 A JPS5660179 A JP S5660179A JP 13511879 A JP13511879 A JP 13511879A JP 13511879 A JP13511879 A JP 13511879A JP S5660179 A JPS5660179 A JP S5660179A
Authority
JP
Japan
Prior art keywords
frequency
interphone
terminal
electric power
housing
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.)
Pending
Application number
JP13511879A
Other languages
Japanese (ja)
Inventor
Taiichiro Noguchi
Satokazu Yamazaki
Naohiko Senda
Osamu Shiozu
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.)
Yagi Antenna Co Ltd
Original Assignee
Yagi Antenna 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 Yagi Antenna Co Ltd filed Critical Yagi Antenna Co Ltd
Priority to JP13511879A priority Critical patent/JPS5660179A/en
Publication of JPS5660179A publication Critical patent/JPS5660179A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PURPOSE:To share the electric power source part built in the housing by providing the interphone housing with highfrequency input and output terminals, by connecting a filter and permitting only a high-frequency wave to pass through said filter. CONSTITUTION:Right under receiving antenna 1, TV high-frequency amplifier 2 is provided and interphone master housing 10 is provided with high-frequency input terminal 4 and output terminal 5. Then, the low voltage of the commercial electric power source obtained from interphone electric power transformer 15 provided to housing 10 is applied to high-frequency transmission line 3 via high-frequency stopping filter 6 and terminal 4. A TV signal from amplifier 2 is applied to TV receiver 9 via transmission line 3, terminal 4, low-voltage stopping filter 7, terminal 5, and high-frequency branching line 8 to receive a TV broadcast. As a result, the interphone can be coupled with the TV device inexpensively without wide space by operating amplifier 2 by applying a low-voltage electric power, low in dangerousness, to transmission line 3.
JP13511879A 1979-10-22 1979-10-22 Coupler between interphone and television signal transmitter Pending JPS5660179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13511879A JPS5660179A (en) 1979-10-22 1979-10-22 Coupler between interphone and television signal transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13511879A JPS5660179A (en) 1979-10-22 1979-10-22 Coupler between interphone and television signal transmitter

Publications (1)

Publication Number Publication Date
JPS5660179A true JPS5660179A (en) 1981-05-23

Family

ID=15144238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13511879A Pending JPS5660179A (en) 1979-10-22 1979-10-22 Coupler between interphone and television signal transmitter

Country Status (1)

Country Link
JP (1) JPS5660179A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026732B1 (en) * 1970-04-24 1975-09-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026732B1 (en) * 1970-04-24 1975-09-03

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