JPS61260439A - Optical information recording device - Google Patents
Optical information recording deviceInfo
- Publication number
- JPS61260439A JPS61260439A JP60102442A JP10244285A JPS61260439A JP S61260439 A JPS61260439 A JP S61260439A JP 60102442 A JP60102442 A JP 60102442A JP 10244285 A JP10244285 A JP 10244285A JP S61260439 A JPS61260439 A JP S61260439A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- information
- power
- magnetic field
- optimum
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10595—Control of operating function
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10504—Recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10515—Reproducing
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は光ビームを用いて情報の記録あるいは再生を行
う光学的情報記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an optical information recording device that records or reproduces information using a light beam.
光学的に情報を記録再生する場合の手段として、記録材
料としては希十類−遷移金属アモルファス系を用い、記
録時にレーザービームを記録媒体に照射し、キューリ一
点付近まで加熱し、補助磁界を加えて磁化反転させる裏
によりビットを形成し、再生時には周知のカー効果、あ
るいはファラデー効果を用いて情報の再生を行う光磁気
記録方式が知られている。As a means of optically recording and reproducing information, a rare-transition metal amorphous system is used as the recording material, and during recording, the recording medium is irradiated with a laser beam, heated to around the Curie point, and an auxiliary magnetic field is applied. A magneto-optical recording method is known in which bits are formed on the back side by which the magnetization is reversed, and information is reproduced using the well-known Kerr effect or Faraday effect during reproduction.
ここで問題となる事は記録レーザーパワー、補助バイア
ス磁界強度が一定であると記録媒体の保持力、キューリ
一温度、感度等記録材斜め静特性の違いにより、記録さ
れるピットの大きさ等が影響を受けることである。この
場合、信号を再生した場合、再生波形に歪を生じ、情報
に誤りを発生する事になる。The problem here is that if the recording laser power and auxiliary bias magnetic field strength are constant, the size of the recorded pits will vary due to differences in the diagonal static characteristics of the recording material such as the coercive force of the recording medium, the Curie temperature, and the sensitivity. It is about being influenced. In this case, when the signal is reproduced, distortion occurs in the reproduced waveform and errors occur in the information.
この様な影響を除くため繰り返しディスクを使用するご
とにディスクの特性を調べるために記録再生を何度か繰
り返し、最適値をもとめる方式もあるが、繰り返し記録
再生の不可能なりＲＡＷタイプのディスク等を使用する
場合は不可能となり、書き換え可能な光磁気ディスクに
関してもその動作に使用するための装置が余分に必要と
なり、装置のコストアップの影響も出てくる。In order to eliminate this kind of influence, there is a method in which recording and playback is repeated several times to check the characteristics of the disk each time the disk is used, and the optimum value is determined. This becomes impossible if a rewritable magneto-optical disk is used, and an extra device is required to operate the rewritable magneto-optical disk, which increases the cost of the device.
また無調整で各ディスクを使用する場合、ディスクの記
録感度、保磁力等のバラツキの範囲を小さくせねばなら
ず、ディスクの生産性にも影響しコストアップにつなが
ってしまう。Furthermore, when each disk is used without adjustment, it is necessary to reduce the range of variation in recording sensitivity, coercive force, etc. of the disks, which affects the productivity of the disks and leads to an increase in costs.
本発明は上記の点に鑑みなされたもので、記録媒体に対
する光ビームの記録条件が記録された記録媒体から前記
記録条件を読み出して光ビームを制御することにより、
記録データの信頼性を高くできる光学的情報記録装置を
提供することを〔実施例〕
以下図面を参照して本発明の一実施例を説明する。The present invention has been made in view of the above points, and by reading out the recording conditions from the recording medium in which the recording conditions for the light beam on the recording medium are recorded and controlling the light beam,
[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第１図（ａ）は光磁気記録媒体を示す図であり、第１図
（ｂ）に示す様な層構成で構成されている。FIG. 1(a) is a diagram showing a magneto-optical recording medium, which has a layer structure as shown in FIG. 1(b).
１１は基板でありガラス、 Ｐ Ｍ Ｍ Ａ （Ｐａ
ｌｙｍｅｔｈ７１Ｍｅｔｈａｃｒ７１ａｔｅ） 、 Ｐ
Ｃ（Ｐｏｌｙｃａｒｂｏｎａｔｅ）などが一般的であ
る。１２はＰｈｏｔｏＰｏｌｙｍｅｒ層でトラッキング
ガイド溝が形成されている。１３はＳｉＯ，ＺｎＳ。11 is a substrate made of glass, PMMA (Pa
lymeth71Methacr71ate), P
C (Polycarbonate) etc. are common. 12 is a PhotoPolymer layer in which a tracking guide groove is formed. 13 is SiO, ZnS.
５ｉ３Ｎｉ等の誘電体からなる層、１４は記録層で希土
類−遷移アモルファス合金よりなる。１５は１３と同様
な材料からなる保護層である。またトラックはらせん状
あるいは同心円状に形成され、各トラックはｎ個のセク
ターに分割されており、各セクターのヘッダー領域ごと
にそれぞれ各々のセクターに対応するセクター動、、ト
ラック陥、、クロック同期ビット、アドレスマーク、セ
クターマーク等があらかじめプリフォーマットされてい
る。The recording layer 14 is made of a dielectric material such as 5i3Ni and is made of a rare earth-transition amorphous alloy. 15 is a protective layer made of the same material as 13. The tracks are formed spirally or concentrically, and each track is divided into n sectors, and each header area of each sector has sector movement, track fall, and clock synchronization bits corresponding to each sector. , address marks, sector marks, etc. are preformatted in advance.
ここで、トラック陽、は内周からＯトラック。Here, track positive is the O track from the inner circumference.
ｌトラック・・・となっており、最内周の０トラツクを
ディスクの管理情報を記録する領域として用い、通常の
データを記録する領域と区別して使用する。このＯトラ
ック中のある１つの特定のセクターを記録媒体に対する
光ビームの記録条件即ち、最適記録レーザーパワー情報
、最適バイアス磁界強度情報、最適消去パワー情報、最
適再生パワー情報の記録領域とし、各々８ビツトのデー
タとし、第２図に示す様にセクターのデータ領域の先頭
から４バイトに光磁気効果を利用し記録する。The 0 track on the innermost circumference is used as an area for recording management information of the disc, and is used to distinguish it from an area for recording normal data. One specific sector in this O track is used as a recording area for the recording conditions of the light beam on the recording medium, that is, the optimum recording laser power information, the optimum bias magnetic field strength information, the optimum erasing power information, and the optimum reproduction power information. Bit data is recorded using the magneto-optical effect in the first 4 bytes of the sector data area as shown in FIG.
各データの一例として３元アモルファス合金ＧｄＴｂＦ
ｅテキューリ一温度１５０℃、保磁力３．０ＫＯｅの媒
体の場合、ディスク回転数１８０Ｏｒｐｍ、レーザーパ
ワー６ｍＷ・、キャリア（記Ｑ）周波数２ＭＨｚ、帯域
幅３０ＫＨｚでＣ／Ｎ測定を行った場合バイアス磁界と
Ｃ／Ｎ及びその２次高調波のＣ／Ｎを表わすＣ２／Ｎと
の関係を第３図に示す、またＣｄＴｂＦａでキューリ一
点り５０℃、保磁力２．５ＫＯｅの場合は第３図点線の
様になる。また、ＧｄＴＺＢＦｅＣｏでキューリ一点り
２０℃、保磁力２．５ＫＯｅの媒体でレーザーパワーを
８ｍＷとした場合は第４図の様になる。As an example of each data, ternary amorphous alloy GdTbF
In the case of a medium with a temperature of 150°C and a coercive force of 3.0 KOe, the bias magnetic field and The relationship between C/N and C2/N, which represents the C/N of its second harmonic, is shown in Figure 3. In addition, in the case of CdTbFa with a Curie point of 50°C and a coercive force of 2.5 KOe, the dotted line in Figure 3 It will be like that. Further, when the laser power is set to 8 mW using a medium of GdTZBFeCo at 20° C. and a coercive force of 2.5 KOe, the result is as shown in FIG.
これより第１番目の媒体の場合、最適記録条件は記録レ
ーザーパワー６ｍＷ（媒体上）、補助バイアス磁界４０
０ Ｇａｕｓｓが最適条件となる。From this, in the case of the first medium, the optimal recording conditions are a recording laser power of 6 mW (on the medium) and an auxiliary bias magnetic field of 40 mW.
0 Gauss is the optimal condition.
第２番目の媒体の場合レーザーパワー６ｍＷ、補助バイ
アス磁界３ Ｑ Ｑ Ｇａｕｓｓが最適条件となる。ま
た第３番目の媒体に関しては、記録レーザーパワー８ｍ
Ｗ、補助バイアス磁界３５０Ｇａｕｓｓが最適記録条件
となる。In the case of the second medium, the optimum conditions are a laser power of 6 mW and an auxiliary bias magnetic field of 3 Q Q Gauss. Regarding the third medium, the recording laser power is 8m.
The optimum recording conditions are W and an auxiliary bias magnetic field of 350 Gauss.
また、消去パワーに関しては、一般的には記録パワーよ
り若干高めに設定する。再生パワーに関しては、記録パ
ワーよりかなり小さく同一トラック上を何度繰り返し再
生してもピットが安定な状態を保ち、再生信号が極端に
小さくならない程度のパワーに設定する。Furthermore, the erasing power is generally set slightly higher than the recording power. As for the reproduction power, it is set to a level that is considerably lower than the recording power so that the pits remain stable no matter how many times the same track is reproduced and the reproduction signal does not become extremely small.
これらの条件をディスクの製造時にあらかじめ測定して
おき各データとしてディスク上に記録する。These conditions are measured in advance during disk manufacturing and recorded on the disk as each data.
次に前記光学的情報記録媒体を使用した情報記録再生装
置のブロック図を第５図に、また動作フローを第６図に
示し、それらに基づき動作を説明する。Next, a block diagram of an information recording/reproducing apparatus using the optical information recording medium is shown in FIG. 5, and an operation flow is shown in FIG. 6, and the operation will be explained based on them.
第５図において、１は最適記録条件、その他のデータが
記録された光磁気ディスク、２は記録媒体ｌへの情報の
記録再生を行う光学式ピックアップ、３は記録時に記録
媒体に補助バイアス磁界をかけるための電磁石、４は光
学ピックアップ２により再生された情報信号を後段で必
要とされるレベルまで増幅する増幅器、５は再生情報信
号から元の情報及びその他に必要なりロックを再生し復
調信号を得るデータセパレーター、６は光学ピックアッ
プ２の内部にある半導体レーザーを駆動するためのレー
ザー駆動回路、７はこれら各部の動作を制御するコント
ローラー、８はコントローラー７からのバイアス磁界強
度のデジタル信号をアナログ値に変換するためのＤ／Ａ
コンバーターである。In FIG. 5, 1 is a magneto-optical disk on which optimum recording conditions and other data are recorded, 2 is an optical pickup that records and reproduces information on the recording medium L, and 3 is an auxiliary bias magnetic field that applies to the recording medium during recording. 4 is an amplifier for amplifying the information signal reproduced by the optical pickup 2 to a level required in the subsequent stage; 5 is an amplifier for reproducing the original information and other necessary locks from the reproduced information signal and generating a demodulated signal. 6 is a laser drive circuit for driving the semiconductor laser inside the optical pickup 2, 7 is a controller that controls the operation of these parts, 8 is a digital signal of the bias magnetic field strength from the controller 7, and 8 is an analog value of the bias magnetic field strength digital signal from the controller 7. D/A to convert to
It is a converter.
まずディスクｌが情報記録再生装置に装着されたことが
光学的手段等で検知されると（ステップ１）、不図示の
光学ヘッド送り機構によりピックアップ２をディスク最
内周へ送り、所望のトラックを検知するための不図示の
サーチ機構によりＯトラックにシークしたら（ステップ
２）、インデックス領域の情報を再生する（ステップ３
）。First, when it is detected by optical means etc. that the disk l has been loaded into the information recording/reproducing device (step 1), the pickup 2 is sent to the innermost circumference of the disk by an optical head feeding mechanism (not shown), and a desired track is moved. After seeking to the O track using a search mechanism (not shown) for detection (step 2), the information in the index area is reproduced (step 3).
).
このときのレーザビームのパワーは必要最小限のパワー
とする。再生された情報は増幅され、復調された後コン
トローラ７に読み込まれる。コントローラ７では記録、
再生、消去の各モードを判断しくステップ４）、読み込
んだ各情報をもとに。The power of the laser beam at this time is set to the minimum necessary power. The reproduced information is amplified, demodulated, and then read into the controller 7. Controller 7 records,
Determine playback and erasure modes in step 4) based on each piece of information read.
それぞれのモードで再生ビームパワー、記録ビームパワ
ー、消去ビームパワー、バイアス磁界強度等の値をレー
ザドライバ６及び磁界発生用Ｄ／Ａコンバータへ送り、
半導体レーザの電流を制御し、所望のレーザーパワーに
する。また磁界発生用Ｄ／Ａコンバータ８はバイアス磁
界強度データをアナログ値に変換した後、バイアス磁界
発生用ドライバ９の電流を制御し、磁石３から最適なバ
イアス磁界を発生させる（ステップ５〜Ｉ）。In each mode, values such as reproduction beam power, recording beam power, erasing beam power, bias magnetic field strength, etc. are sent to the laser driver 6 and the magnetic field generation D/A converter,
Control the current of the semiconductor laser to achieve the desired laser power. Further, the magnetic field generation D/A converter 8 converts the bias magnetic field strength data into an analog value, and then controls the current of the bias magnetic field generation driver 9 to generate an optimal bias magnetic field from the magnet 3 (steps 5 to I). .
前記実施例においては、光磁気ディスクを用いて説明し
たが、追記形の光ディスクにおいても各情報をディスク
上に凹凸のピットで記録する事により同様の効果が得ら
れる。また、相転位形のディスクにおいても同様である
。又、インデックス領域として最内周トラックとしたが
これは最内周に限られるものではない。Although the above embodiment has been explained using a magneto-optical disk, the same effect can be obtained even in a write-once optical disk by recording each piece of information on the disk using uneven pits. The same applies to phase transition type disks. Further, although the innermost track is used as the index area, this is not limited to the innermost track.
以上説明した様に本発明によれば、記録媒体に該記録媒
体に対する光ビームの記録条件を記録することにより、
使用可能な記録媒体の特性の範囲が広くなり、記録媒体
の生産性が向上し、コスト低減にも効果がある。As explained above, according to the present invention, by recording the recording conditions of the light beam for the recording medium on the recording medium,
The range of characteristics of usable recording media is widened, the productivity of recording media is improved, and costs are also reduced.
また、記録された記録条件を読み出してビームを制御す
ることにより常に最適な光ビームパワー及びバイアス強
度で記録でき、データの信頼性も向上する。Furthermore, by reading out the recorded recording conditions and controlling the beam, recording can always be performed with the optimum optical beam power and bias intensity, and data reliability is also improved.
第１図は本発明を適用できるディスクの外形図及び層構
成図、第２図はディスクの特定セクタのフォーマットを
示す図、第３図、第４図は補助磁界とＣ／Ｎの関係を示
す図、第５図は本発明を適用でさる装置のブロック図、
第６図は第５図に示す装置の動作を示すフローチャート
図である。
第１０（Ｑ）
躬１図（ｂ）
第２図
１ｍ＆′７Ｊｊｌ＄（Ｇ８）
ＭｌｌｔＪ慮！ＦＣら鴫）Fig. 1 is an outline drawing and a layer configuration diagram of a disk to which the present invention can be applied, Fig. 2 is a drawing showing the format of a specific sector of the disk, and Figs. 3 and 4 show the relationship between the auxiliary magnetic field and C/N. 5 is a block diagram of an apparatus to which the present invention is applied,
FIG. 6 is a flowchart showing the operation of the apparatus shown in FIG. 10th (Q) Figure 1 (b) Figure 2 1m&'7Jjl$ (G8) MlltJ consideration! FC et al.)
Claims (4)
記録装置において、記録媒体上に記録された光ビームの
前記記録媒体に対する記録条件に従って前記光ビームを
制御し、情報の記録または再生を行うことを特徴とする
光学的情報記録装置。(1) In an information recording device that records or reproduces information using a light beam, the light beam recorded on a recording medium is controlled according to recording conditions for the recording medium, and information is recorded or reproduced. An optical information recording device characterized by:
従って該装置の磁界を制御することを特徴とする光学的
情報記録装置。(2) An optical information recording device according to claim 1, characterized in that the magnetic field of the device is controlled according to the recording conditions.
前記記録媒体の所定の領域に記録 されていることを特徴とする光学的情報記録装置。(3) The optical information recording device according to claim 1, wherein the recording condition is recorded in a predetermined area of the recording medium.
前記光ビームの記録パワー情報、再生パワー情報、消去
パワー情報、バイアス磁界強度情報の少なくとも１つで
あることを特徴とする光学的情報記録装置。(4) Optical information according to claim 1, wherein the recording condition is at least one of recording power information, reproduction power information, erasing power information, and bias magnetic field strength information of the light beam. Recording device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60102442A JPS61260439A (en) | 1985-05-14 | 1985-05-14 | Optical information recording device |
| US07/920,534 US5410527A (en) | 1985-05-14 | 1992-07-28 | Information recording/reproducing apparatus including setting optimum recording condition or reproducing condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60102442A JPS61260439A (en) | 1985-05-14 | 1985-05-14 | Optical information recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61260439A true JPS61260439A (en) | 1986-11-18 |
Family
ID=14327579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60102442A Pending JPS61260439A (en) | 1985-05-14 | 1985-05-14 | Optical information recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61260439A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63148449A (en) * | 1986-12-11 | 1988-06-21 | Matsushita Electric Ind Co Ltd | Magneto-optical disk controller |
| JPH0233748A (en) * | 1988-07-22 | 1990-02-02 | Hitachi Ltd | Recording and erasing method for magneto-optical disk |
| US5001692A (en) * | 1987-04-21 | 1991-03-19 | U.S. Philips Corporation | Optical recording system providing a recording signal waveform adapted to the recording characteristics of the record carrier, and recording apparatus and record carrier for use in such systems |
| WO1994022139A1 (en) * | 1993-03-15 | 1994-09-29 | Nikon Corporation | Magnetooptic recording method, magnetooptic recording medium and magentooptic recording apparatus |
| US5553044A (en) * | 1990-05-16 | 1996-09-03 | Mitsubishi Denki Kabushiki Kaisha | Optical recording method and apparatus for enabling interchange of dissimilar recording media |
| US6324128B1 (en) | 1997-06-30 | 2001-11-27 | Fujitsu Limited | Optical storage apparatus and recording and reproducing method of optical storage medium |
| US6331966B1 (en) | 1998-03-16 | 2001-12-18 | Fujitsu Limited | Optical storage apparatus and recording and reproducing method of optical storage medium |
-
1985
- 1985-05-14 JP JP60102442A patent/JPS61260439A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63148449A (en) * | 1986-12-11 | 1988-06-21 | Matsushita Electric Ind Co Ltd | Magneto-optical disk controller |
| US5001692A (en) * | 1987-04-21 | 1991-03-19 | U.S. Philips Corporation | Optical recording system providing a recording signal waveform adapted to the recording characteristics of the record carrier, and recording apparatus and record carrier for use in such systems |
| JPH0233748A (en) * | 1988-07-22 | 1990-02-02 | Hitachi Ltd | Recording and erasing method for magneto-optical disk |
| JP2753271B2 (en) * | 1988-07-22 | 1998-05-18 | 株式会社日立製作所 | Laser power setting method for optical disk |
| US5553044A (en) * | 1990-05-16 | 1996-09-03 | Mitsubishi Denki Kabushiki Kaisha | Optical recording method and apparatus for enabling interchange of dissimilar recording media |
| WO1994022139A1 (en) * | 1993-03-15 | 1994-09-29 | Nikon Corporation | Magnetooptic recording method, magnetooptic recording medium and magentooptic recording apparatus |
| US6324128B1 (en) | 1997-06-30 | 2001-11-27 | Fujitsu Limited | Optical storage apparatus and recording and reproducing method of optical storage medium |
| US6519210B2 (en) | 1997-06-30 | 2003-02-11 | Fujitsu Limited | Optical storage apparatus having reproducing magnetic field correcting unit and recording and reproducing method of optical storage medium |
| US6331966B1 (en) | 1998-03-16 | 2001-12-18 | Fujitsu Limited | Optical storage apparatus and recording and reproducing method of optical storage medium |
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