JPH0221847U - - Google Patents

Info

Publication number
JPH0221847U
JPH0221847U JP9375388U JP9375388U JPH0221847U JP H0221847 U JPH0221847 U JP H0221847U JP 9375388 U JP9375388 U JP 9375388U JP 9375388 U JP9375388 U JP 9375388U JP H0221847 U JPH0221847 U JP H0221847U
Authority
JP
Japan
Prior art keywords
processor
hands
speaker
receiver
free telephone
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
JP9375388U
Other languages
Japanese (ja)
Other versions
JPH0514594Y2 (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 JP1988093753U priority Critical patent/JPH0514594Y2/ja
Publication of JPH0221847U publication Critical patent/JPH0221847U/ja
Application granted granted Critical
Publication of JPH0514594Y2 publication Critical patent/JPH0514594Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図は本考案の基本構成図、第２図は本考案
の一実施例を示す構成図、第３図はハンズフリー
電話のハウリングの説明図である。 FIG. 1 is a basic configuration diagram of the present invention, FIG. 2 is a configuration diagram showing an embodiment of the present invention, and FIG. 3 is an explanatory diagram of howling in a hands-free telephone.

Claims (1)

【実用新案登録請求の範囲】 送話器にマイク５を用い、且つ受話器をスピー
カ６としたハンズフリー電話機において、 受話信号をＡ／Ｄコンバータ１でデジタルデー
タに変換してプロセツサ２に取込み、該プロセツ
サ２で発呼時のリングバツクトーン信号を検出し
たときは送話系利得を低下させるように制御する
ことを特徴とするハンズフリー電話器。[Claims for Utility Model Registration] In a hands-free telephone set in which a microphone 5 is used as a transmitter and a speaker 6 is used as a receiver, a received signal is converted into digital data by an A/D converter 1, which is then input into a processor 2, and the receiver is a speaker 6. A hands-free telephone device characterized in that when a processor 2 detects a ringback tone signal at the time of a call, the processor 2 controls the transmitting system gain to be lowered.
JP1988093753U 1988-07-15 1988-07-15 Expired - Lifetime JPH0514594Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988093753U JPH0514594Y2 (en) 1988-07-15 1988-07-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988093753U JPH0514594Y2 (en) 1988-07-15 1988-07-15

Publications (2)

Publication Number Publication Date
JPH0221847U true JPH0221847U (en) 1990-02-14
JPH0514594Y2 JPH0514594Y2 (en) 1993-04-19

Family

ID=31318228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988093753U Expired - Lifetime JPH0514594Y2 (en) 1988-07-15 1988-07-15

Country Status (1)

Country Link
JP (1) JPH0514594Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05122325A (en) * 1991-10-28 1993-05-18 Nec Corp Radio loudspeaking telephone system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5787656U (en) * 1980-11-18 1982-05-29
JPS61354U (en) * 1984-06-05 1986-01-06 明星電気株式会社 On-hook dial audible display circuit
JPS61128858U (en) * 1985-01-31 1986-08-12

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1578323A (en) * 1976-02-26 1980-11-05 Rustenburg Platinum Mines Ltd Compositions containing platinum

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5787656U (en) * 1980-11-18 1982-05-29
JPS61354U (en) * 1984-06-05 1986-01-06 明星電気株式会社 On-hook dial audible display circuit
JPS61128858U (en) * 1985-01-31 1986-08-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05122325A (en) * 1991-10-28 1993-05-18 Nec Corp Radio loudspeaking telephone system

Also Published As

Publication number Publication date
JPH0514594Y2 (en) 1993-04-19

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