JPH0181761U - - Google Patents

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Publication number
JPH0181761U
JPH0181761U JP1987175951U JP17595187U JPH0181761U JP H0181761 U JPH0181761 U JP H0181761U JP 1987175951 U JP1987175951 U JP 1987175951U JP 17595187 U JP17595187 U JP 17595187U JP H0181761 U JPH0181761 U JP H0181761U
Authority
JP
Japan
Prior art keywords
signal
noise removal
circuit
noise
utility
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
JP1987175951U
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 JP1987175951U priority Critical patent/JPH0181761U/ja
Publication of JPH0181761U publication Critical patent/JPH0181761U/ja
Pending legal-status Critical Current

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  • Signal Processing For Digital Recording And Reproducing (AREA)

Description

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

第１図は本考案に係るノイズ除去回路を示す図
、第２図は他の実施例を示す図、第３図は更に他
の実施例を示す図、第４図はフイルタの特性図で
ある。 Ｐはエラーフラグ信号、Ｓはサーチ動作中を示
す信号、Ｍはノイズ除去信号、７はレベル保持回
路。 Fig. 1 is a diagram showing a noise removal circuit according to the present invention, Fig. 2 is a diagram showing another embodiment, Fig. 3 is a diagram showing still another embodiment, and Fig. 4 is a characteristic diagram of the filter. . P is an error flag signal, S is a signal indicating that a search operation is in progress, M is a noise removal signal, and 7 is a level holding circuit.

Claims (1)

【実用新案登録請求の範囲】 (1) デジタル音声信号の再生装置に於けるノイ
ズ除去回路であつて、サーチ動作中であることを
示す信号及び再生デジタル信号にエラーがあるこ
とを示す信号に基いてノイズ除去信号を導出する
構成としたことを特徴とするノイズ除去回路。 (2) ノイズ除去信号を、ミユーテイング信号と
することを特徴とする実用新案登録請求の範囲第
１項記載のノイズ除去回路。 (3) ノイズ除去信号を、ＤＡ変換された後のア
ナログ音声信号線路に挿入されたローパスフイル
タのフイルタ特性を変化させる信号とすることを
特徴とする実用新案登録請求の範囲第１項記載の
ノイズ除去回路。 (4) ノイズ除去信号を、ＤＡ変換された後の信
号線路に挿入されたエラー発生直前の信号レベル
を保持するレベル保持回路を作動させる信号とす
ることを特徴とする実用新案登録請求の範囲第１
項記載のノイズ除去回路。[Claims for Utility Model Registration] (1) A noise removal circuit in a digital audio signal reproducing device, which is based on a signal indicating that a search operation is in progress and a signal indicating that there is an error in the reproduced digital signal. What is claimed is: 1. A noise removal circuit characterized in that the circuit derives a noise removal signal using a noise reduction signal. (2) The noise removal circuit according to claim 1, wherein the noise removal signal is a mutating signal. (3) The noise according to claim 1 of the utility model registration, characterized in that the noise removal signal is a signal that changes the filter characteristics of a low-pass filter inserted into the analog audio signal line after being DA-converted. removal circuit. (4) Utility model registration claim 1, characterized in that the noise removal signal is a signal that operates a level holding circuit that is inserted into the signal line after DA conversion and holds the signal level immediately before the error occurrence. 1
Noise removal circuit described in section.
JP1987175951U 1987-11-18 1987-11-18 Pending JPH0181761U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987175951U JPH0181761U (en) 1987-11-18 1987-11-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987175951U JPH0181761U (en) 1987-11-18 1987-11-18

Publications (1)

Publication Number Publication Date
JPH0181761U true JPH0181761U (en) 1989-05-31

Family

ID=31467724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987175951U Pending JPH0181761U (en) 1987-11-18 1987-11-18

Country Status (1)

Country Link
JP (1) JPH0181761U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8118573B2 (en) 2004-12-22 2012-02-21 Robert Bosch Gmbh Piston pump with at least one piston element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59152509A (en) * 1983-02-18 1984-08-31 Sanyo Electric Co Ltd Muting device
JPS61292279A (en) * 1985-06-19 1986-12-23 Matsushita Electric Ind Co Ltd PCM signal regenerator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59152509A (en) * 1983-02-18 1984-08-31 Sanyo Electric Co Ltd Muting device
JPS61292279A (en) * 1985-06-19 1986-12-23 Matsushita Electric Ind Co Ltd PCM signal regenerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8118573B2 (en) 2004-12-22 2012-02-21 Robert Bosch Gmbh Piston pump with at least one piston element

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