JP2966631B2 - Recording device - Google Patents
Recording deviceInfo
- Publication number
- JP2966631B2 JP2966631B2 JP6835692A JP6835692A JP2966631B2 JP 2966631 B2 JP2966631 B2 JP 2966631B2 JP 6835692 A JP6835692 A JP 6835692A JP 6835692 A JP6835692 A JP 6835692A JP 2966631 B2 JP2966631 B2 JP 2966631B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- capacitor
- signal
- magnetic head
- head coil
- 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磁気テープ等の記録媒
体に磁気ヘッドコイルを用いて信号を記録する記録装置
に関するもので、特にＩＣ化に適した記録装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for recording a signal on a recording medium such as a magnetic tape using a magnetic head coil, and more particularly to a recording apparatus suitable for use in an integrated circuit.
【０００２】[0002]
【従来の技術】音声信号を磁気テープに記録する場合、
あらかじめ記録信号にピーキング特性を施こすようにし
ている。図２は、そのような記録装置を示すもので記録
増幅器（１）の入力端子（２）には記録信号が印加さ
れ、コイルＬ1、コンデンサＣ1及びＣ2、抵抗Ｒ1及びＲ
2から構成される直列共振回路で図３に示す如きピーキ
ング特性を施される。図３の点線は、スイッチＳＷ２を
オフさせた場合に必要な特性を示すもので、例えばＶＴ
ＲのＳＰ（標準記録）モード時に必要な特性である。
又、図３の実線は、スイッチＳＷ２をオンさせた場合で
あり、ＶＴＲのＬＰ（長時間記録）モード時である。記
録増幅器（１）の出力信号は、ＩＣ（３）のピン（４）
を介してＩＣ（３）外部に導出される。導出された信号
は、直流阻止コンデンサ（５）及び抵抗（６）を介して
磁気ヘッドコイル（７）に供給される。又、交流バイア
ス発生回路（８）からの交流バイアスが、磁気ヘッドコ
イル（７）に供給される。2. Description of the Related Art When recording an audio signal on a magnetic tape,
The peaking characteristic is applied to the recording signal in advance. FIG. 2 shows such a recording apparatus, in which a recording signal is applied to an input terminal (2) of a recording amplifier (1), and a coil L 1 , capacitors C 1 and C 2 , resistors R 1 and R
A peaking characteristic as shown in FIG. The dotted line in FIG. 3 shows the characteristics required when the switch SW2 is turned off.
This is a characteristic required in the SP (standard recording) mode of R.
The solid line in FIG. 3 shows the case where the switch SW2 is turned on, and is in the LP (long-time recording) mode of the VTR. The output signal of the recording amplifier (1) is output to the pin (4) of the IC (3).
Through the IC (3). The derived signal is supplied to a magnetic head coil (7) via a DC blocking capacitor (5) and a resistor (6). The AC bias from the AC bias generation circuit (8) is supplied to the magnetic head coil (7).
【０００３】従って、図２の装置に依れば、記録信号に
周波数特性を付与して磁気テープに記録することができ
る。Therefore, according to the apparatus shown in FIG. 2, it is possible to add a frequency characteristic to a recording signal and record it on a magnetic tape.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、図２の
装置では周波数特性を付与する為に専用の直列共振回路
や、その為のＩＣピンを必要とし、ＩＣ化に不適であっ
た。However, the apparatus shown in FIG. 2 requires a dedicated series resonance circuit to provide frequency characteristics and an IC pin for that purpose, and is not suitable for use in an IC.
【０００５】[0005]
【課題を解決するための手段】本発明は上述の点に鑑み
成されたもので、記録媒体に信号を磁気ヘッドコイルで
磁気記録する記録装置であって、記録信号を増幅する記
録増幅器と、該記録増幅器の出力端に直列接続された周
波数特性設定用の第１コンデンサと、該第１コンデンサ
を通過した記録信号が供給される磁気ヘッドコイルと、
前記記録信号に交流バイアスを与える交流バイアス発生
回路と、を備え、前記第１コンデンサと前記磁気ヘッド
コイルにより記録信号に周波数特性を与えるようにした
ことを特徴とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is a recording apparatus for magnetically recording a signal on a recording medium with a magnetic head coil, comprising: a recording amplifier for amplifying a recording signal; A first capacitor for setting a frequency characteristic connected in series to an output terminal of the recording amplifier, a magnetic head coil to which a recording signal passing through the first capacitor is supplied;
An AC bias generator for applying an AC bias to the recording signal, wherein the recording signal is given a frequency characteristic by the first capacitor and the magnetic head coil.
【０００６】[0006]
【作用】本発明に依れば、磁気ヘッドコイルを、周波数
特性付与用の直列共振回路のコイルに利用しているの
で、磁気ヘッドコイルと記録増幅器との間にコンデンサ
を入れることにより直列共振の周波数特性が得られる。According to the present invention, the magnetic head coil is used as the coil of the series resonance circuit for imparting the frequency characteristic. Therefore, by inserting a capacitor between the magnetic head coil and the recording amplifier, the series resonance is reduced. Frequency characteristics can be obtained.
【０００７】[0007]
【実施例】図１は、本発明の一実施例を示す回路図で、
（９）は磁気ヘッドコイル（７）とともに直列共振回路
を構成する第１コンデンサ、（１０）は周波数特性設定
用の抵抗、（１１）は磁気ヘッドコイル（７）とともに
直列共振回路を構成する第２コンデンサ、（１２）は制
御信号に応じて開閉するスイッチである。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
(9) is a first capacitor that forms a series resonance circuit with the magnetic head coil (7), (10) is a resistor for setting frequency characteristics, and (11) is a first capacitor that forms a series resonance circuit with the magnetic head coil (7). The two capacitors, (12), are switches that open and close according to control signals.
【０００８】図１においては、磁気ヘッドコイル（７）
と記録増幅器（１）の出力端との間に容量の小なる（１
０００ＰＦ程度）第１及び第２コンデンサ（９）及び
（１１）が接続されている。尚、直流阻止コンデンサ
（５）は、１０μＦ程度の容量を持ち、磁気ヘッドコイ
ル（７）とでは共振を起こさない。今、図１の装置がＶ
ＴＲのＳＰモードで使用されるとすると、スイッチ（１
２）が開放される。すると、第１コンデンサ（９）、抵
抗（１０）及び磁気ヘッドコイル（７）により直列共振
回路が構成される。すると、図３の点線で示す如き周波
数特性が、記録信号に対して施されることになる。In FIG. 1, a magnetic head coil (7)
And the output between the recording amplifier (1) and the output terminal (1).
The first and second capacitors (9) and (11) are connected. The DC blocking capacitor (5) has a capacitance of about 10 μF and does not cause resonance with the magnetic head coil (7). Now, the device in FIG.
If used in the SP mode of the TR, the switch (1
2) is released. Then, a series resonance circuit is configured by the first capacitor (9), the resistor (10), and the magnetic head coil (7). Then, a frequency characteristic as shown by a dotted line in FIG. 3 is applied to the recording signal.
【０００９】次にＬＰモードで信号を記録する場合に
は、スイッチ（１２）を閉じる。すると、第１コンデン
サ（９）、抵抗（１０）、及び磁気ヘッドコイル（７）
から成る直列共振回路と、第２コンデンサ（１１）及び
磁気ヘッドコイル（７）から成る直列共振回路とが構成
される。すると、周波数特性におけるピーキングの位置
が変化し、図３の実線に示す如き周波数特性が供され
る。Next, when recording a signal in the LP mode, the switch (12) is closed. Then, the first capacitor (9), the resistor (10), and the magnetic head coil (7)
And a series resonance circuit including the second capacitor (11) and the magnetic head coil (7). Then, the position of the peaking in the frequency characteristic changes, and the frequency characteristic as shown by the solid line in FIG. 3 is provided.
【００１０】従って、図１の回路に依れば格別なコイル
を必要とせずに、記録信号に所望の周波数特性を付与す
ることができるとともに、スイッチで切換えることによ
り複数の周波数特性が得られる。尚、図１の交流バイア
ス発生回路（８）は、磁気ヘッドコイル（７）の直流阻
止コンデンサ（５）側に設けるようにしても良い。その
場合には、間にインピーダンス調整用の抵抗を設ける必
要がある。又、図１ではＶＴＲのＬＰモードを説明した
が、ＥＰ（超長時間記録）モードの場合には更に第２コ
ンデンサ（１１）及びスイッチ（１２）の直列回路の如
きものを一段追加すれば良い。Therefore, according to the circuit shown in FIG. 1, a desired frequency characteristic can be given to the recording signal without requiring a special coil, and a plurality of frequency characteristics can be obtained by switching with a switch. The AC bias generation circuit (8) in FIG. 1 may be provided on the DC blocking capacitor (5) side of the magnetic head coil (7). In that case, it is necessary to provide a resistor for impedance adjustment between them. In FIG. 1, the LP mode of the VTR has been described. However, in the case of the EP (ultra long-time recording) mode, one stage such as a series circuit of the second capacitor (11) and the switch (12) may be added. .
【００１１】[0011]
【発明の効果】以上述べた如く、本発明に依れば記録信
号に周波数特性を付与する場合に、ＩＣのピンを格別必
要とせず、従来のＩＣに外付けのコンデンサを加えるだ
けで、周波数特性を付与できる。特に本発明に依れば、
複数の周波数特性を付与する際にも１ピン追加するだけ
で可能となるので、ＩＣのピン数削減の効果が大であ
る。As described above, according to the present invention, when imparting a frequency characteristic to a recording signal, the frequency of the frequency can be increased only by adding an external capacitor to the conventional IC without specially requiring the pins of the IC. Properties can be given. In particular, according to the present invention,
When a plurality of frequency characteristics are provided, it becomes possible only by adding one pin, so that the effect of reducing the number of pins of the IC is great.
【図１】本発明の記録装置を示す回路図である。FIG. 1 is a circuit diagram showing a recording apparatus of the present invention.
【図２】従来の記録装置を示す回路図である。FIG. 2 is a circuit diagram showing a conventional recording apparatus.
【図３】図１及び図２の説明に供するための周波数特性
図である。FIG. 3 is a frequency characteristic diagram for use in explaining FIGS. 1 and 2;
（１） 記録増幅器 （７） 磁気ヘッドコイル （８） 交流バイアス発生回路 （９） 第１コンデンサ (1) Recording amplifier (7) Magnetic head coil (8) AC bias generation circuit (9) First capacitor
Claims (1)
気記録する記録装置であって、 記録信号を増幅する記録増幅器と、 該記録増幅器の出力端に直列接続された周波数特性設定
用の第１コンデンサと、 該第１コンデンサを通過した記録信号が供給される磁気
ヘッドコイルと、 前記記録信号に交流バイアスを与える交流バイアス発生
回路と、 スイッチ及び周波数特性設定用の第２コンデンサの直列
接続を含み前記第１コンデンサに並列接続された直列回
路とを備え、前記第１及び第２コンデンサと前記磁気ヘ
ッドコイルとにより記録信号に周波数特性を与えるとと
もに前記スイッチの切換により異なる２つの周波数特性
が得られるようにしたことを特徴とする記録装置。 A signal is recorded on a recording medium by a magnetic head coil.
A recording apparatus for gas-recording, a recording amplifier for amplifying a recording signal, the frequency characteristic set in series with the output end of the recording amplifier
A first capacitor for recording and a magnetic signal to which a recording signal passing through the first capacitor is supplied.
Head coil and AC bias generation for applying an AC bias to the recording signal
Circuit, series connection of switch and second capacitor for setting frequency characteristics
A series circuit including a connection and connected in parallel to the first capacitor.
A first path, a first path, a second path, and a magnetic head.
To give the recording signal frequency characteristics
Two frequency characteristics that are different depending on the switching of the switch
A recording apparatus characterized in that a recording result is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6835692A JP2966631B2 (en) | 1992-03-26 | 1992-03-26 | Recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6835692A JP2966631B2 (en) | 1992-03-26 | 1992-03-26 | Recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05274609A JPH05274609A (en) | 1993-10-22 |
| JP2966631B2 true JP2966631B2 (en) | 1999-10-25 |
Family
ID=13371452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6835692A Expired - Lifetime JP2966631B2 (en) | 1992-03-26 | 1992-03-26 | Recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2966631B2 (en) |
-
1992
- 1992-03-26 JP JP6835692A patent/JP2966631B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05274609A (en) | 1993-10-22 |
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