JPH1166745A - Optical track servo type magnetic recording method and device - Google Patents
Optical track servo type magnetic recording method and deviceInfo
- Publication number
- JPH1166745A JPH1166745A JP21435797A JP21435797A JPH1166745A JP H1166745 A JPH1166745 A JP H1166745A JP 21435797 A JP21435797 A JP 21435797A JP 21435797 A JP21435797 A JP 21435797A JP H1166745 A JPH1166745 A JP H1166745A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- recording
- signal
- circuit
- optical
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、デジタル信号の記
録媒体への磁気記録方法及び装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for magnetically recording digital signals on a recording medium.
【０００２】[0002]
【従来の技術】デジタル信号を記録媒体へ記録する際、
記録媒体と記録装置のヘッドとの間の相対速度を管理す
る必要がある。例えば、特開昭６３−２１６７号公報に
記載されているように、ディスク状記録媒体の内外周に
おいて線速度が一定になるようにモーターの回転速度を
制御する技術が知られている。2. Description of the Related Art When recording a digital signal on a recording medium,
It is necessary to manage the relative speed between the recording medium and the head of the recording device. For example, as described in Japanese Patent Application Laid-Open No. 63-2167, a technique is known in which the rotation speed of a motor is controlled so that the linear velocity is constant at the inner and outer circumferences of a disk-shaped recording medium.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
ようなモーターの回転速度の制御等により、記録媒体と
記録装置のヘッドとの間の相対速度を精密に管理するに
は、駆動機構及び駆動制御回路が複雑な構造となり、ひ
いては記録装置全体の複雑化、コスト上昇といった不利
を招く。However, in order to precisely control the relative speed between the recording medium and the head of the recording apparatus by controlling the rotation speed of the motor as described above, a driving mechanism and a driving control are required. The circuit has a complicated structure, which leads to disadvantages such as an increase in complexity of the entire recording apparatus and an increase in cost.
【０００４】そこで、本発明は、簡単な構成によって、
記録媒体と記録装置のヘッドとの間の相対速度を精密に
管理する必要を無くした光学トラックサーボ型磁気記録
方法及び装置を提供することを目的とする。Therefore, the present invention provides a simple configuration.
It is an object of the present invention to provide an optical track servo type magnetic recording method and apparatus that eliminate the need to precisely control the relative speed between a recording medium and a head of a recording apparatus.
【０００５】[0005]
【課題を解決するための手段】本発明による光学トラッ
クサーボ型磁気記録方法は、記録情報に対応したデジタ
ル信号を記録媒体に記録する際、基準となるクロック信
号を、前記記録媒体に刻まれた光学的な連続信号から生
成することを特徴とする。According to the optical track servo type magnetic recording method of the present invention, when a digital signal corresponding to recording information is recorded on a recording medium, a reference clock signal is engraved on the recording medium. It is characterized by being generated from an optical continuous signal.
【０００６】このような記録方法によれば、複雑な駆動
機構及び駆動制御回路を用いて記録媒体と記録装置のヘ
ッドとの間の相対速度を精密に管理する必要が無く、安
価で簡素な構造の磁気記録装置を提供することができ
る。According to such a recording method, there is no need to precisely control the relative speed between the recording medium and the head of the recording apparatus by using a complicated drive mechanism and a drive control circuit. Can be provided.
【０００７】すなわち、本発明による光学トラックサー
ボ型磁気記録装置は、記録媒体上の連続光学トラックサ
ーボ情報を検出する検出手段と、前記検出手段の出力に
同期したクロック信号を発生する手段と、前記クロック
信号を基準クロックとして記録情報を符号化する手段
と、前記符号化された記録情報を記録媒体に書込む手段
とを備えている。That is, an optical track servo type magnetic recording apparatus according to the present invention comprises: detecting means for detecting continuous optical track servo information on a recording medium; means for generating a clock signal synchronized with the output of the detecting means; The system includes means for encoding recording information using a clock signal as a reference clock, and means for writing the encoded recording information to a recording medium.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施形態につい
て、図１を用いて説明する。図１において、１は光学ト
ラックサーボパターン情報を有する記録媒体であり、所
定のトラック間隔で断続的に設けられた光学溝を備えて
いる。２は記録媒体を回転駆動するためのスピンドルモ
ータであり、所定の回転速度で記録媒体１を回転駆動す
る。３は記録媒体上の光学トラックサーボパターン情報
を検出する検出手段としての光学ピックアップであり、
レーザー、レンズ、フォトディテクタ等で構成される。
光学ピックアップ３で検出されるサーボ信号は、主に磁
気ヘッド位置制御回路４によりトラック位置制御に用い
られる。Embodiments of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 denotes a recording medium having optical track servo pattern information, which has optical grooves intermittently provided at predetermined track intervals. Reference numeral 2 denotes a spindle motor for rotationally driving the recording medium, which rotationally drives the recording medium 1 at a predetermined rotational speed. Reference numeral 3 denotes an optical pickup as a detecting means for detecting optical track servo pattern information on a recording medium,
It is composed of a laser, a lens, a photo detector and the like.
The servo signal detected by the optical pickup 3 is mainly used for track position control by the magnetic head position control circuit 4.
【０００９】記録媒体１がスピンドルモータ２により回
転駆動されると、光学ピックアップ３により記録媒体上
のサーボ信号が検出される。このサーボ信号は、コンパ
レータ５を経由して位相／周波数比較回路６、ＶＣＯ
７、分周回路８から構成されるＰＬＬ回路に入力され
る。このＰＬＬ回路により、光学ピックアップ３で検出
されたサーボ信号に同期したクロックが生成され、書込
み時の基準クロックとして符号化回路９に供給される。When the recording medium 1 is driven to rotate by the spindle motor 2, a servo signal on the recording medium is detected by the optical pickup 3. This servo signal is sent to the phase / frequency comparison circuit 6 via the comparator 5 and the VCO
7 is input to a PLL circuit composed of a frequency dividing circuit 8. By this PLL circuit, a clock synchronized with the servo signal detected by the optical pickup 3 is generated and supplied to the encoding circuit 9 as a reference clock at the time of writing.
【００１０】符号化回路９は、ＣＰＵ１０から与えられ
る記録情報を、上記の基準クロックに基づいて符号化
し、符号化した記録情報をライトアンプ１１に与える。
ライトアンプ１１で増幅された記録情報は磁気ヘッド１
２に与えられ、記録媒体１へ書込まれる。したがって、
光学ピックアップ３により検出されたサーボ信号と同期
した記録情報に対応するデジタル信号が磁気ヘッド１２
によって記録媒体１へ書込まれる。The encoding circuit 9 encodes the recording information provided from the CPU 10 based on the reference clock, and supplies the encoded recording information to the write amplifier 11.
The recording information amplified by the write amplifier 11 is
2 is written to the recording medium 1. Therefore,
A digital signal corresponding to recording information synchronized with the servo signal detected by the optical pickup 3 is transmitted to the magnetic head 12.
Is written to the recording medium 1.
【００１１】上記のような構成によれば、例えばスピン
ドルモータ２の回転速度が所定の回転数より遅い状態で
は、光学ピックアップ３の検出信号、符号化回路９への
基準クロックも遅くなり、その結果、記録媒体への書込
み速度も遅くなる。逆に、スピンドルモータ２の回転速
度が所定の回転数より速い状態では、記録媒体への書込
み速度が速くなる。According to the above configuration, for example, when the rotation speed of the spindle motor 2 is lower than a predetermined rotation speed, the detection signal of the optical pickup 3 and the reference clock to the encoding circuit 9 are also delayed, and as a result, In addition, the writing speed to the recording medium also decreases. Conversely, when the rotation speed of the spindle motor 2 is higher than the predetermined rotation speed, the writing speed on the recording medium increases.
【００１２】このように、記録媒体の回転速度の変動に
追従して書込み速度が変化する。したがって、記録媒体
１と磁気ヘッド１２との相対速度を所定の速度に管理す
るためのスピンドルモータ２の精密な駆動制御をするこ
となく、記録情報に対応したデジタル信号を所定の間隔
で記録媒体に書込むことができる。As described above, the writing speed changes in accordance with the change in the rotation speed of the recording medium. Therefore, a digital signal corresponding to recording information is transmitted to the recording medium at predetermined intervals without performing precise drive control of the spindle motor 2 for controlling the relative speed between the recording medium 1 and the magnetic head 12 at a predetermined speed. Can be written.
【００１３】[0013]
【発明の効果】以上説明したように、本発明の磁気記録
方法及び装置によれば、駆動機構及び駆動制御回路を複
雑な構造にすることなく、デジタル信号を記録媒体に所
定間隔で書き込むことができる安価で簡素な構造の磁気
記録装置を提供することができる。As described above, according to the magnetic recording method and apparatus of the present invention, digital signals can be written to a recording medium at predetermined intervals without having a complicated drive mechanism and drive control circuit. It is possible to provide an inexpensive and simple magnetic recording device.
【図１】本発明の実施形態に係る光学トラックサーボ型
磁気信号記録装置の回路構成を示すブロック図FIG. 1 is a block diagram showing a circuit configuration of an optical track servo type magnetic signal recording apparatus according to an embodiment of the present invention.
１ 記録媒体 ２ スピンドルモータ ３ 光学ピックアップ ４ 磁気ヘッド位置制御回路 ５ コンパレータ ６ 位相／周波数比較回路 ７ ＶＣＯ ８ 分周回路 ９ 符号化回路 １０ ＣＰＵ １１ ライトアンプ １２ 磁気ヘッド DESCRIPTION OF SYMBOLS 1 Recording medium 2 Spindle motor 3 Optical pickup 4 Magnetic head position control circuit 5 Comparator 6 Phase / frequency comparison circuit 7 VCO 8 Divider circuit 9 Encoding circuit 10 CPU 11 Write amplifier 12 Magnetic head
Claims (2)
媒体に記録する際、前記記録媒体に刻まれた光学的な連
続信号の検出情報からクロック信号を生成し、前記クロ
ック信号に基づいて記録情報を符号化することにより、
前記クロック信号に同期した記録ヘッドの駆動信号を生
成することを特徴とする磁気信号記録方法。When recording a digital signal corresponding to recording information on a recording medium, a clock signal is generated from detection information of an optical continuous signal engraved on the recording medium, and the recording information is recorded based on the clock signal. By encoding
A method for recording a magnetic signal, comprising: generating a drive signal for a recording head in synchronization with the clock signal.
報を検出する検出手段と、前記検出手段の出力に同期し
たクロック信号を発生する手段と、前記クロック信号を
基準クロックとして記録情報を符号化する手段と、前記
符号化された記録情報を記録媒体に書込む手段とを備え
ている光学トラックサーボ型磁気記録装置。2. A detecting means for detecting continuous optical track servo information on a recording medium, a means for generating a clock signal synchronized with an output of the detecting means, and encoding the recording information using the clock signal as a reference clock. And an optical track servo type magnetic recording apparatus comprising: means for writing the encoded recording information onto a recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21435797A JPH1166745A (en) | 1997-08-08 | 1997-08-08 | Optical track servo type magnetic recording method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21435797A JPH1166745A (en) | 1997-08-08 | 1997-08-08 | Optical track servo type magnetic recording method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1166745A true JPH1166745A (en) | 1999-03-09 |
Family
ID=16654451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21435797A Pending JPH1166745A (en) | 1997-08-08 | 1997-08-08 | Optical track servo type magnetic recording method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1166745A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594213B1 (en) | 1999-11-22 | 2003-07-15 | Sanyo Electric Co., Ltd. | Data recorder |
| US6992957B2 (en) | 1999-12-27 | 2006-01-31 | Sanyo Electric Co., Ltd. | Controller of data recorder |
| US7099246B2 (en) | 2001-01-31 | 2006-08-29 | Sanyo Electric Co., Ltd. | Method and apparatus for recording data on an optical disc with restarting writing of data after data recording interruption |
| US7106675B1 (en) | 1999-11-22 | 2006-09-12 | Sanyo Electric Co., Ltd. | Data recorder |
| US7120710B2 (en) | 1999-11-22 | 2006-10-10 | Sanyo Electric Co., Ltd. | Controller for data recorder |
| US7149167B2 (en) | 1999-12-27 | 2006-12-12 | Sanyo Electric Co., Ltd. | Data recorder |
| US7149165B2 (en) | 1999-12-27 | 2006-12-12 | Sanyo Electric Co., Ltd. | Controller for data recorder |
| US7167427B1 (en) | 1999-11-22 | 2007-01-23 | Sanyo Electric Co., Ltd. | Data recorder |
| US7196987B1 (en) | 1999-11-22 | 2007-03-27 | Sanyo Electric Co., Ltd. | Controller for data recorder |
-
1997
- 1997-08-08 JP JP21435797A patent/JPH1166745A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594213B1 (en) | 1999-11-22 | 2003-07-15 | Sanyo Electric Co., Ltd. | Data recorder |
| US7106675B1 (en) | 1999-11-22 | 2006-09-12 | Sanyo Electric Co., Ltd. | Data recorder |
| US7120710B2 (en) | 1999-11-22 | 2006-10-10 | Sanyo Electric Co., Ltd. | Controller for data recorder |
| US7167427B1 (en) | 1999-11-22 | 2007-01-23 | Sanyo Electric Co., Ltd. | Data recorder |
| US7196987B1 (en) | 1999-11-22 | 2007-03-27 | Sanyo Electric Co., Ltd. | Controller for data recorder |
| US7236436B2 (en) | 1999-11-22 | 2007-06-26 | Sanyo Electric Co., Ltd. | Controller for data recorder |
| US6992957B2 (en) | 1999-12-27 | 2006-01-31 | Sanyo Electric Co., Ltd. | Controller of data recorder |
| US7149167B2 (en) | 1999-12-27 | 2006-12-12 | Sanyo Electric Co., Ltd. | Data recorder |
| US7149165B2 (en) | 1999-12-27 | 2006-12-12 | Sanyo Electric Co., Ltd. | Controller for data recorder |
| US7099246B2 (en) | 2001-01-31 | 2006-08-29 | Sanyo Electric Co., Ltd. | Method and apparatus for recording data on an optical disc with restarting writing of data after data recording interruption |
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