JPH02105203U - - Google Patents
Info
- Publication number
- JPH02105203U JPH02105203U JP1128389U JP1128389U JPH02105203U JP H02105203 U JPH02105203 U JP H02105203U JP 1128389 U JP1128389 U JP 1128389U JP 1128389 U JP1128389 U JP 1128389U JP H02105203 U JPH02105203 U JP H02105203U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- reproducing
- noise
- signal
- magnetic
- 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
Links
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Description
第１図ないし第５図は本考案の一実施例を示す
ものであつて、第１図はノイズ低減装置の回路図
、第２図は磁気テープの説明図、第３図は記録時
の回路図、第４図は再生時の回路図、第５図ａ，
ｂはそれぞれ録再ヘツドの斜視図である。第６図
ａ，ｂは従来例を示すものであつて、録音・再生
時の入出力特性図である。
１は録再ヘツド（電磁変換手段）、２・３は磁
気ギヤツプ（信号録再手段）、４は磁気ギヤツプ
（ノイズ録再手段）、５・６は信号端子、７はノ
イズ端子、８はグランド端子、９は磁気テープ（
磁気記録媒体）、記録・再生切り換えスイツチ１
２……（スイツチング手段）、１３はノイズ減算
増幅器（ノイズ低減手段）である。
Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a circuit diagram of a noise reduction device, Figure 2 is an explanatory diagram of a magnetic tape, and Figure 3 is a circuit during recording. Figure 4 is a circuit diagram during playback, Figure 5 a,
b is a perspective view of the recording/reproducing head. FIGS. 6a and 6b show a conventional example, and are input/output characteristic diagrams during recording and playback. 1 is a recording/reproducing head (electromagnetic conversion means), 2 and 3 are magnetic gaps (signal recording and reproducing means), 4 is a magnetic gap (noise recording and reproducing means), 5 and 6 are signal terminals, 7 is a noise terminal, and 8 is ground. terminal, 9 is magnetic tape (
magnetic recording medium), recording/playback switch 1
2... (switching means), 13 is a noise subtraction amplifier (noise reduction means).
Claims (1)
あるいは磁気信号を電気信号に変換する電磁変換
手段と、 電磁変換手段に設けられ、磁気記録媒体に特有
なノイズの混在した入力信号を磁気記録媒体に記
録および再生する信号録再手段と、 電磁変換手段に設けられ、無入力信号状態にて
上記のノイズのみを磁気記録媒体に記録および再
生するノイズ録再手段と、 記録あるいは再生の選択に基づいて記録・再生
を切り換えるスイツチング手段と、 信号録再手段により得られた上記のノイズの混
在した信号からノイズ録再手段により得られた上
記のノイズを減算し、入力信号のみを再生するノ
イズ低減手段とを備えていることを特徴とする磁
気記録再生装置のノイズ低減装置。[Claims for Utility Model Registration] During recording and reproduction, converting electrical signals into magnetic signals,
Alternatively, an electromagnetic conversion means for converting a magnetic signal into an electric signal, a signal recording/reproducing means provided in the electromagnetic conversion means and for recording and reproducing an input signal mixed with noise peculiar to a magnetic recording medium on the magnetic recording medium, and an electromagnetic conversion. noise recording/reproducing means for recording and reproducing only the above-mentioned noise on a magnetic recording medium in the absence of an input signal; a switching means for switching between recording and reproducing based on a selection of recording or reproducing; and a signal recording/reproducing means. and a noise reduction means for subtracting the above-mentioned noise obtained by the noise recording and reproducing means from the above-mentioned noise-mixed signal obtained by the means, and reproducing only the input signal. Equipment noise reduction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1128389U JPH02105203U (en) | 1989-01-31 | 1989-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1128389U JPH02105203U (en) | 1989-01-31 | 1989-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02105203U true JPH02105203U (en) | 1990-08-21 |
Family
ID=31219700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1128389U Pending JPH02105203U (en) | 1989-01-31 | 1989-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02105203U (en) |
-
1989
- 1989-01-31 JP JP1128389U patent/JPH02105203U/ja active Pending
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