JPH0164251U - - Google Patents

Info

Publication number
JPH0164251U
JPH0164251U JP1987160414U JP16041487U JPH0164251U JP H0164251 U JPH0164251 U JP H0164251U JP 1987160414 U JP1987160414 U JP 1987160414U JP 16041487 U JP16041487 U JP 16041487U JP H0164251 U JPH0164251 U JP H0164251U
Authority
JP
Japan
Prior art keywords
comparing
switching means
transmitting
speakerphone
input
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
JP1987160414U
Other languages
English (en)
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 JP1987160414U priority Critical patent/JPH0164251U/ja
Publication of JPH0164251U publication Critical patent/JPH0164251U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図は本考案の実施例におけるスピーカーホ
ンを示すブロツク図、第2図は同上スイツチング
手段の動作説明図、第3図は従来におけるスピー
カーホンを示すブロツク図、第4図はスピーチネ
ツトワークの回路構成図、第5図はスピーカーホ
ンの外観概略図である。 1:スピーチネツトワーク、2:スピーカーホ
ン回路部、4:スピーカー、5:マイク、8:コ
ンパレータ、11:コントロール回路、13,1
4:スイツチング手段。

Claims (1)

    【実用新案登録請求の範囲】
  1. 受話入力と送話入力との大きさを比較する比較
    手段を設けると共に、受話回路及び送話回路に夫
    々スイツチング手段を設け、この両スイツチング
    手段を上記比較手段による比較結果に基づいてO
    N,OFF制御してなることを特徴とするスピー
    カーホンにおけるハウリング防止装置。
JP1987160414U 1987-10-19 1987-10-19 Pending JPH0164251U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987160414U JPH0164251U (ja) 1987-10-19 1987-10-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987160414U JPH0164251U (ja) 1987-10-19 1987-10-19

Publications (1)

Publication Number Publication Date
JPH0164251U true JPH0164251U (ja) 1989-04-25

Family

ID=31442461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987160414U Pending JPH0164251U (ja) 1987-10-19 1987-10-19

Country Status (1)

Country Link
JP (1) JPH0164251U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100260447B1 (ko) * 1997-05-30 2000-07-01 강병호 하울링방지기능을갖는스피커폰전화기

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100260447B1 (ko) * 1997-05-30 2000-07-01 강병호 하울링방지기능을갖는스피커폰전화기

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