JPH02120941U - - Google Patents

Info

Publication number
JPH02120941U
JPH02120941U JP2935189U JP2935189U JPH02120941U JP H02120941 U JPH02120941 U JP H02120941U JP 2935189 U JP2935189 U JP 2935189U JP 2935189 U JP2935189 U JP 2935189U JP H02120941 U JPH02120941 U JP H02120941U
Authority
JP
Japan
Prior art keywords
switch means
signal
side terminal
zero
voltage
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
JP2935189U
Other languages
Japanese (ja)
Other versions
JPH066638Y2 (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 JP2935189U priority Critical patent/JPH066638Y2/en
Publication of JPH02120941U publication Critical patent/JPH02120941U/ja
Application granted granted Critical
Publication of JPH066638Y2 publication Critical patent/JPH066638Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Noise Elimination (AREA)

Description

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

第１図はこの考案の一つの実施例に係るカーオ
ーデイオコンポーネントシステムを示す回路図、
第２図は第１図中の要部の具体的な回路図、第３
図は第１図中のカセツトデツキを取り替えたカー
オーデイオコンポーネントシステムを示すブロツ
ク図である。第４図と第５図は各々従来のカーオ
ーデイオコンポーネントシステムの例を示す回路
図、第６図は従来の音響機器で間違つたカーオー
デイオコンポーネントシステムを組んだ場合の回
路図である。 主な符号の説明、２６，３０……グランドアイ
ソレーシヨンアンプ、５０……開閉スイツチ回路
、５２……制御回路、５４……グランドアイソレ
ーシヨンアンプ検出回路、ＣＨＩ……ホツト側信
号入力端子、ＣＧＩ……信号ＧＮＤ側端子、ＧＮ
Ｄ２……グランド。 FIG. 1 is a circuit diagram showing a car audio component system according to one embodiment of this invention;
Figure 2 is a specific circuit diagram of the main parts in Figure 1, and Figure 3
This figure is a block diagram showing a car audio component system in which the cassette deck in FIG. 1 is replaced. FIGS. 4 and 5 are circuit diagrams showing examples of conventional car audio component systems, and FIG. 6 is a circuit diagram in which a wrong car audio component system is assembled with conventional audio equipment. Explanation of main symbols, 26, 30...Ground isolation amplifier, 50...Open/close switch circuit, 52...Control circuit, 54...Ground isolation amplifier detection circuit, CHI...Hot side signal input terminal, CGI...Signal GND side terminal, GN
D2 ...Grand.

Claims (1)

【実用新案登録請求の範囲】 ホツト側信号入力端子と信号ＧＮＤ側端子を有
し、ホツト信号側入力端子と信号ＧＮＤ側端子間
にグランドアイソレーシヨンアンプが設けられた
音響機器の伝送ノイズ低減装置において、 信号ＧＮＤ側端子とＧＮＤ間に設けられた開閉
スイツチ手段と、 信号ＧＮＤ側端子とＧＮＤ間の電圧が零Ｖでな
いか否かを検出する検出手段と、 開閉スイツチ手段が開いている初期状態で、検
出手段が零Ｖでないことを検出していないとき開
閉スイツチ手段を開状態に保持し、開閉スイツチ
手段が開いている初期状態で、検出手段が零Ｖで
ないことを検出しているとき、開閉スイツチ手段
を制御して閉状態に保持する制御手段と、 を含むことを特徴とする音響機器の伝送ノイズ
低減装置。[Claim for Utility Model Registration] Transmission noise reduction device for audio equipment that has a hot signal input terminal and a signal GND side terminal, and a ground isolation amplifier is provided between the hot signal side input terminal and the signal GND side terminal. , an on-off switch means provided between the signal GND side terminal and GND, a detection means for detecting whether the voltage between the signal GND side terminal and GND is not zero V, and an initial state in which the on-off switch means is open. When the detection means is not detecting that the voltage is not zero V, the opening/closing switch means is held in an open state, and in the initial state where the opening/closing switch means is open, when the detection means is detecting that the voltage is not zero V, 1. A transmission noise reduction device for audio equipment, comprising: a control means for controlling an opening/closing switch means to maintain it in a closed state.
JP2935189U 1989-03-15 1989-03-15 Transmission noise reduction device for audio equipment Expired - Lifetime JPH066638Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2935189U JPH066638Y2 (en) 1989-03-15 1989-03-15 Transmission noise reduction device for audio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2935189U JPH066638Y2 (en) 1989-03-15 1989-03-15 Transmission noise reduction device for audio equipment

Publications (2)

Publication Number Publication Date
JPH02120941U true JPH02120941U (en) 1990-10-01
JPH066638Y2 JPH066638Y2 (en) 1994-02-16

Family

ID=31253491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2935189U Expired - Lifetime JPH066638Y2 (en) 1989-03-15 1989-03-15 Transmission noise reduction device for audio equipment

Country Status (1)

Country Link
JP (1) JPH066638Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007208812A (en) * 2006-02-03 2007-08-16 Pioneer Electronic Corp Contents data processor and reproducing device
JP2007324787A (en) * 2006-05-31 2007-12-13 New Japan Radio Co Ltd Signal processing circuit
JP2012231348A (en) * 2011-04-27 2012-11-22 Korg Inc Amplifier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007208812A (en) * 2006-02-03 2007-08-16 Pioneer Electronic Corp Contents data processor and reproducing device
JP4701096B2 (en) * 2006-02-03 2011-06-15 パイオニア株式会社 Content data processing apparatus and playback apparatus
JP2007324787A (en) * 2006-05-31 2007-12-13 New Japan Radio Co Ltd Signal processing circuit
JP2012231348A (en) * 2011-04-27 2012-11-22 Korg Inc Amplifier

Also Published As

Publication number Publication date
JPH066638Y2 (en) 1994-02-16

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