JPS6175668U - - Google Patents

Info

Publication number
JPS6175668U
JPS6175668U JP16041184U JP16041184U JPS6175668U JP S6175668 U JPS6175668 U JP S6175668U JP 16041184 U JP16041184 U JP 16041184U JP 16041184 U JP16041184 U JP 16041184U JP S6175668 U JPS6175668 U JP S6175668U
Authority
JP
Japan
Prior art keywords
call
intercoms
activated
units
carrier waves
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
JP16041184U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP16041184U priority Critical patent/JPS6175668U/ja
Publication of JPS6175668U publication Critical patent/JPS6175668U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図…この考案の実施例であるＦＭ搬送式イ
ンターホンの全体のブロツク図、第２図…その通
話識別回路の回路図、第３図…その動作説明図。 １，２…受信用フイルタ、３，４…フロントエ
ンド、５，６…デイテクター、７…通話識別回路
、８…音声ミユート回路、９…送信用フイルタ、
１０…送信回路、１１…周波数切換回路、１２…
コントロール回路。 FIG. 1 is an overall block diagram of an FM carrier intercom according to an embodiment of the invention, FIG. 2 is a circuit diagram of its call identification circuit, and FIG. 3 is an explanatory diagram of its operation. 1, 2... Reception filter, 3, 4... Front end, 5, 6... Detector, 7... Call identification circuit, 8... Audio mute circuit, 9... Transmission filter,
10... Transmission circuit, 11... Frequency switching circuit, 12...
control circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 少なくとも３台を１組とし、周波数の異なる２
個の搬送波を用いて通話を行ない、待機状態に於
て前記２個の搬送波を同時に受信したとき音声出
力回路に設けられた音声ミユート回路を動作させ
、通話を行なつている２台のインターホン以外の
インターホンの音量を下げることを特徴とするＦ
Ｍ搬送式インターホン。 A set of at least 3 units, with 2 units with different frequencies.
A call is made using two carrier waves, and when the two carrier waves are simultaneously received in the standby state, the audio mute circuit installed in the audio output circuit is activated, and the intercoms other than the two intercoms making the call are activated. F, which is characterized by lowering the volume of the intercom.
M transport type intercom.
JP16041184U 1984-10-25 1984-10-25 Pending JPS6175668U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16041184U JPS6175668U (en) 1984-10-25 1984-10-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16041184U JPS6175668U (en) 1984-10-25 1984-10-25

Publications (1)

Publication Number Publication Date
JPS6175668U true JPS6175668U (en) 1986-05-21

Family

ID=30718333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16041184U Pending JPS6175668U (en) 1984-10-25 1984-10-25

Country Status (1)

Country Link
JP (1) JPS6175668U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836066A (en) * 1981-08-27 1983-03-02 Sanii Denshi Kk Communication system of fm carrier system interphone
JPS59178857A (en) * 1983-03-30 1984-10-11 Toshiba Electric Equip Corp Interphone device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836066A (en) * 1981-08-27 1983-03-02 Sanii Denshi Kk Communication system of fm carrier system interphone
JPS59178857A (en) * 1983-03-30 1984-10-11 Toshiba Electric Equip Corp Interphone device

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