JPS61260438A - Optical information recording medium - Google Patents
Optical information recording mediumInfo
- Publication number
- JPS61260438A JPS61260438A JP60102441A JP10244185A JPS61260438A JP S61260438 A JPS61260438 A JP S61260438A JP 60102441 A JP60102441 A JP 60102441A JP 10244185 A JP10244185 A JP 10244185A JP S61260438 A JPS61260438 A JP S61260438A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- information
- recording medium
- optimum
- recorded
- 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
-
- 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
う光学的情報記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an optical information recording medium 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事
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 by reversing the magnetization of the information, and during reproduction, the well-known Kerr effect or Faraday effect is used to reproduce information.
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、感度等記録材料の静特性の違いにより、記録さ
れるビ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 bits will vary due to differences in the 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ＤＲＡＷ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, but this method does not allow repeated recording and playback, such as DRAW type disks. 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、常に最適な状態で記録可能な光学的記録媒体を提
供することを目的とする。The present invention was made in view of the above points, and an object of the present invention is to provide an optical recording medium that can always record in an optimal state by recording the recording conditions of a light beam on the recording medium. do.
以下図面を参照して本発明の一実施例を説明する。 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。FIG. 1(a) is a diagram showing a magneto-optical recording medium.
第１図（ｂ）に示す様な層構成で構成されている。It has a layered structure as shown in FIG. 1(b).
１１は基板でありガラス、 ＰＭＭＡ（Ｐｏ１７ｍｅｔ
ｂｙ１Ｍｅｔｈａｃｒｙｌａｔｅ） 、 Ｐ Ｃ（Ｐｏ
ｌｙｃａｒｂｏｎａｔｅ）などが一般的である。１２は
ＰｈａｔｏＰｏｌｙｍｅｒ層でトラッキングガイド溝が
形成されている。１３はＳ ｉ Ｏ＊ Ｚ ｎ Ｓ ＊
Ｓｉ３Ｎ４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崩、、ト
ラック崩、、クロック同期ビット、アドレスマーク、
セフ９−マーク等があらかじめプリフォーマットされて
いる。11 is a substrate made of glass, PMMA (Po17met
by1Methacrylate), P C (Po
lycarbonate) etc. are common. 12 is a PhatoPolymer layer in which a tracking guide groove is formed. 13 is S i O * Z n S *
A layer 14 made of a dielectric material such as Si3N4 is a recording layer made of a rare earth-transition amorphous alloy. 15 is a protective layer made of the same material as 13. The tracks are formed in a spiral or concentric shape, and each track is divided into n sectors, and each header area of each sector has a sector break, a track break, and a clock synchronization bit corresponding to each sector. , address mark,
The CEF9-mark etc. are preformatted in advance.
ここで、トラック崩、は内局から０トラツク。Here, the track collapse is 0 tracks from the internal office.
ｌトラックｅｅ・となっており、最内周のＯトラックを
ディスクの管理情報を記録する領域として用い１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。1 track ee. The O track at the innermost circumference is used as an area for recording management information of the disc, and is used separately 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 four bytes of the data area of the sector 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でキューリ一温度１５０℃、保磁力３．０に６ｅの媒
体の場合、ディスク回転数１８００ｒｐ■、レーザーパ
ワー６ｍＷ、キャリア（記録）周波数２ Ｍ Ｈｚ ＋
帯域幅３０Ｋ）ｌｚ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ＣｄＴｂＦｅ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 Curie temperature of 150°C and a coercive force of 3.0 and 6e, the disk rotation speed is 1800 rpm, the laser power is 6 mW, and the carrier (recording) frequency is 2 MHz +
When performing C/N measurement with a bandwidth of 30K)lz, C2 represents the bias magnetic field, C/N, and C/N of its second harmonic.
/N is shown in FIG. 3. In the case of CdTbFe with a curie point of 50° C. and a coercive force of 2.5 KOe, the relationship is as shown by the dotted line in FIG. 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３００ Ｇａｕｓｓが最適条件となる。またｗ
ＳＳ番目の媒体に関しては、記録レーザーパワーワｍＷ
、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 300 Gauss. Again lol
For the SSth medium, the recording laser power wa mW
, an auxiliary bias magnetic field of 350 Gauss is the optimum recording condition.
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
生してもビットが安定な状Ｉ島を保ち、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 even if the same track is reproduced many times, the bits remain stable 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
このブロック図を第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 the information recording and 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 these.
第５図において、ｌ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 optimal recording conditions and other data are recorded, 2 is an optical pickup that records and reproduces information on the recording medium 1, and 3 is an auxiliary bias magnetic field that applies to the recording medium during recording. 4 is an amplifier that amplifies the information signal reproduced by the optical pickup 2 to the level required in the subsequent stage; 5 is an amplifier that reproduces the original information and other necessary locks from the reproduced information signal and demodulates the 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, and 8 is an analog converter for the digital signal of the bias magnetic field strength from the controller 7. D/ to convert to value
It is an 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ｌ）、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 1 is mounted on 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、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イ１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から最適なへデ
ィアス磁界を発生させる（ステップ５〜覆）。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,
In Step 4), determine each mode of reproduction and erasing. Based on the read information, set the values of reproduction beam power, recording beam power, erasing beam power, bias magnetic field strength, etc. in each mode to the laser driver 6 and the magnetic field. Generating D/
The current is sent to the A converter, and the current of the semiconductor laser is controlled to obtain the desired laser power. Further, the magnetic field generation D/A converter 8 converts the bias magnetic field strength data into analog data 1, and then controls the current of the bias magnetic field generation driver 9 to generate an optimal hedias magnetic field from the magnet 3 (steps 5 to 3). cover).
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
上に凹凸のビ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 described using a magneto-optical disk, the same effect can be obtained with a write-once optical disk by recording each piece of information on the disk using concave and convex bits. 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.
【図面の簡単な説明】
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き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。[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an outline drawing and 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 are diagrams showing the auxiliary magnetic field and A diagram showing the C/N relationship, FIG. 5 is a block diagram of a device to which the present invention can be applied,
FIG. 6 is a flowchart showing the operation of the apparatus shown in FIG.
Claims (3)
おいて、前記光ビームの前記記録媒体に対する記録条件
が記録されたことを特徴とする光学的情報記録媒体。(1) An optical information recording medium on which information is recorded using a light beam, characterized in that recording conditions for the light beam on the recording medium are recorded.
前記記録媒体の所定領域に記録されることを特徴とする
光学的情報記録媒体。(2) The optical information recording medium according to claim 1, wherein the recording condition is recorded in a predetermined area of the recording medium.
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媒体。(3) Optical information recording 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. Medium.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60102441A JPS61260438A (en) | 1985-05-14 | 1985-05-14 | Optical information recording medium |
| 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 |
|---|---|---|---|
| JP60102441A JPS61260438A (en) | 1985-05-14 | 1985-05-14 | Optical information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61260438A true JPS61260438A (en) | 1986-11-18 |
Family
ID=14327549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60102441A Pending JPS61260438A (en) | 1985-05-14 | 1985-05-14 | Optical information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61260438A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933923A (en) * | 1988-01-26 | 1990-06-12 | U.S. Philips Corporation | Optical record carrier inscribed with read-out control data and apparatus for reading such record carrier in conformity with such control data |
| 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 |
| US5367509A (en) * | 1991-02-12 | 1994-11-22 | Sony Corporation | Method for reproducing information recorded on a magneto-optical recording medium including servo controlling the dimension of the reproduction region of the recording medium by means of a recorded signal |
| EP1035539A1 (en) * | 1999-03-08 | 2000-09-13 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, recording and reproduction method and apparatus |
| KR100466929B1 (en) * | 2002-02-22 | 2005-01-24 | 주식회사 히타치엘지 데이터 스토리지 코리아 | Optical Disc Recording Method and Apparatus |
| KR100782182B1 (en) * | 2006-02-20 | 2007-12-04 | 엘지전자 주식회사 | Apparatus of Recording/Reproducing Optical Disc With Multiple Layer And Method Thereof |
| US7385892B2 (en) | 2001-02-19 | 2008-06-10 | Pioneer Corporation | Recording medium, information recording apparatus, information recording method, information recording medium, and recording program |
| US7978581B2 (en) | 2002-06-07 | 2011-07-12 | Lg Electronics Inc. | Multi-layered high-density recording medium and optical power adjusting method therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61243974A (en) * | 1985-04-19 | 1986-10-30 | Sanyo Electric Co Ltd | Information recording medium |
-
1985
- 1985-05-14 JP JP60102441A patent/JPS61260438A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61243974A (en) * | 1985-04-19 | 1986-10-30 | Sanyo Electric Co Ltd | Information recording medium |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US4933923A (en) * | 1988-01-26 | 1990-06-12 | U.S. Philips Corporation | Optical record carrier inscribed with read-out control data and apparatus for reading such record carrier in conformity with such control data |
| US5367509A (en) * | 1991-02-12 | 1994-11-22 | Sony Corporation | Method for reproducing information recorded on a magneto-optical recording medium including servo controlling the dimension of the reproduction region of the recording medium by means of a recorded signal |
| WO1994022139A1 (en) * | 1993-03-15 | 1994-09-29 | Nikon Corporation | Magnetooptic recording method, magnetooptic recording medium and magentooptic recording apparatus |
| US6940795B2 (en) | 1999-03-08 | 2005-09-06 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus |
| EP1035539A1 (en) * | 1999-03-08 | 2000-09-13 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, recording and reproduction method and apparatus |
| US6552982B1 (en) | 1999-03-08 | 2003-04-22 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus |
| US7385892B2 (en) | 2001-02-19 | 2008-06-10 | Pioneer Corporation | Recording medium, information recording apparatus, information recording method, information recording medium, and recording program |
| US7548503B2 (en) | 2001-02-19 | 2009-06-16 | Pioneer Corporation | Recording medium, information recording apparatus, information recording method, information recording medium, and recording program |
| KR100466929B1 (en) * | 2002-02-22 | 2005-01-24 | 주식회사 히타치엘지 데이터 스토리지 코리아 | Optical Disc Recording Method and Apparatus |
| US7978581B2 (en) | 2002-06-07 | 2011-07-12 | Lg Electronics Inc. | Multi-layered high-density recording medium and optical power adjusting method therefor |
| US8072865B2 (en) | 2002-06-07 | 2011-12-06 | Lg Electronics Inc. | Multi-layered high-density recording medium and optical power adjusting method therefor |
| KR100782182B1 (en) * | 2006-02-20 | 2007-12-04 | 엘지전자 주식회사 | Apparatus of Recording/Reproducing Optical Disc With Multiple Layer And Method Thereof |
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