JPH0517613B2 - - Google Patents
Info
- Publication number
- JPH0517613B2 JPH0517613B2 JP60133002A JP13300285A JPH0517613B2 JP H0517613 B2 JPH0517613 B2 JP H0517613B2 JP 60133002 A JP60133002 A JP 60133002A JP 13300285 A JP13300285 A JP 13300285A JP H0517613 B2 JPH0517613 B2 JP H0517613B2
- Authority
- JP
- Japan
- Prior art keywords
- information recording
- optical information
- optical
- recording area
- recording medium
- 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
- 230000003287 optical effect Effects 0.000 claims description 81
- 238000000034 method Methods 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
-
- 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
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光学的情報記録媒体の情報記録方法に
係り、特に隣接するトラツクガイド間に第１の光
学的情報記録領域及び第２の光学的情報記録領域
とを有する光学的情報記録媒体の情報記録方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for recording information on an optical information recording medium, and in particular, a first optical information recording area and a second optical information recording area are formed between adjacent track guides. The present invention relates to an information recording method for an optical information recording medium having an information recording area.
以下、従来の光学的情報記録媒体について図を
用いて説明する。
Hereinafter, a conventional optical information recording medium will be explained using figures.
第３図は従来の光学的情報記録媒体の部分拡大
図である。 FIG. 3 is a partially enlarged view of a conventional optical information recording medium.
第３図において、２は光学的情報の記録時ある
いは再生時において、トラツキングサーボ、フオ
ーカスサーボに用いるトラツクガイドで、４はク
ロツク信号再生に用いるクロツクトラツクであ
る。１はトラツクガイド２とクロツクトラツク４
との間に設けられた光学的情報記録領域で、３は
光学的情報記録領域１に形成された光学的記録情
報列である。通常トラツクガイド２及びクロツク
トラツク４は光学的記録情報列３の形成する前に
設けられる。 In FIG. 3, 2 is a track guide used for tracking servo and focus servo when recording or reproducing optical information, and 4 is a clock track used for reproducing a clock signal. 1 is track guide 2 and clock track 4
3 is an optical information recording area provided between the optical information recording area 1 and an optical recording information string 3 formed in the optical information recording area 1. Usually the track guide 2 and the clock track 4 are provided before the optical recording information sequence 3 is formed.
次に、上記光学的情報記録媒体の記録方法につ
いて述べる。 Next, a recording method for the optical information recording medium will be described.
第６図は、光学的情報記録再生装置の光学系の
概略図である。 FIG. 6 is a schematic diagram of the optical system of the optical information recording/reproducing device.
第６図においてｘ，ｙ，ｚは、３次元空間座標
軸を示す。尚、ｚは紙面に垂直な方向の座標軸を
示す。レーザー光源１４から出た光は、コメリー
タレンズ６を通つて平行ビームとなり、回折格子
７に入射する。回折格子７は、ｘ方向に格子が切
られている為に、ｚ方向に光が回折する、この時
光は回折格子７により０次、１次、−１次の３つ
の回折光となる。 In FIG. 6, x, y, and z indicate three-dimensional spatial coordinate axes. Note that z indicates a coordinate axis in a direction perpendicular to the paper surface. The light emitted from the laser light source 14 passes through the commerita lens 6 to become a parallel beam, and enters the diffraction grating 7. Since the diffraction grating 7 has a grating cut in the x direction, light is diffracted in the z direction. At this time, the light becomes three diffracted lights of 0th order, 1st order, and -1st order by the diffraction grating 7.
０次回折光及び±１次の回折光は対物レンズ８
によつて光学的情報記録媒体１２に結像され、３
つの光ビームスポツトを形成する。０次回折光は
±１次回折光よりも高い回折効率を持ち、レーザ
ー光源の変調によつて０次回折光のみがピツトを
形成する事ができる。光学的情報記録媒体１２は
前記トラツクガイド２がｘ方向と平行となるよう
に配置されかつ、図中の矢印１３に示したように
ｘ方向に一定速度で往復して、記録及び再生動作
が行われる。光学的情報記録媒体１２からの３つ
の反射光は、再び対物レンズ８を通つて反射鏡９
により反射されレンズ１０により、該レンズ１０
の焦点面１１に結像される。前記焦点面１１には
前記３つの反射光を個々に検出するための光セン
サがｚ方向に配置されている。 The 0th order diffracted light and the ±1st order diffracted light are transmitted through the objective lens 8.
The image is formed on the optical information recording medium 12 by 3
Forms two light beam spots. The 0th-order diffracted light has a higher diffraction efficiency than the ±1st-order diffracted light, and only the 0th-order diffracted light can form a pit by modulating the laser light source. The optical information recording medium 12 is arranged so that the track guide 2 is parallel to the x direction, and reciprocates in the x direction at a constant speed as shown by the arrow 13 in the figure to perform recording and reproducing operations. be exposed. The three reflected lights from the optical information recording medium 12 pass through the objective lens 8 again and reach the reflecting mirror 9.
reflected by the lens 10, the lens 10
The image is formed on the focal plane 11 of . Optical sensors for individually detecting the three reflected lights are arranged in the focal plane 11 in the z direction.
上記光学系を用いて、光学的情報を書き込む場
合、第４図に示すように、３つのビームスポツト
を配置する。すなわちビームスポツトＡ−１はト
ラツクガイド２上に、ビームスポツトＡ−２は光
学的情報記録領域１上に、ビームスポツトＡ−３
はクロツクトラツク４上に配置される。上記ビー
ムスポツトＡ−２によつて光学的情報記録領域１
に、光学的情報が光学的記録情報列（以下記録ピ
ツト列と呼ぶ）３として書き込まれる。光学的情
報を次の光学的情報記録領域１に書き込む場合
は、ビームスポツトＡ−１，Ａ−２，Ａ−３をそ
れぞれビームスポツトＢ−１，Ｂ−２，Ｂ−３の
位置まで移動させて、同様に記録ピツト列３を形
成する。 When writing optical information using the above optical system, three beam spots are arranged as shown in FIG. That is, beam spot A-1 is placed on the track guide 2, beam spot A-2 is placed on the optical information recording area 1, and beam spot A-3 is placed on the optical information recording area 1.
is placed on the clock track 4. The optical information recording area 1 is formed by the beam spot A-2.
, optical information is written as an optically recorded information sequence (hereinafter referred to as a recording pit sequence) 3. When writing optical information to the next optical information recording area 1, move beam spots A-1, A-2, and A-3 to the positions of beam spots B-1, B-2, and B-3, respectively. Similarly, a recording pit row 3 is formed.
以上の従来の光学的情報記録媒体においては、
光学的情報の書き込みの際、光学的情報記録媒体
の移動速度が均一でなく、加速、減速を繰り返す
等のために書き込みの際のスピードの均一性に関
する信頼性が欠け、光学的情報記録媒体の光学的
情報記録領域にクロツク信号再生に用いるクロツ
クトラツクを設ける必要があつた。記録情報量を
増加させるニーズに対しては、ある特定の変調方
式を用いれば、クロツクトラツクを省略して記録
可能であるという事がドレクスラー・テクノロジ
ー社（米国）のレポートに開示されている。 In the above conventional optical information recording media,
When writing optical information, the moving speed of the optical information recording medium is not uniform, and the speed uniformity during writing is unreliable due to repeated acceleration and deceleration. It was necessary to provide a clock track for use in clock signal reproduction in the optical information recording area. In response to the need to increase the amount of recorded information, a report by Drexler Technology, Inc. (USA) discloses that by using a certain modulation method, it is possible to record without clock tracks.
本件出願人との機密開示契約に基づいて、前記
レポートの光学的情報記録媒体について記載する
と、第５図に示すように、クロツクトラツクを除
去し、光学的情報記録領域１ａに記録ピツト列３
を形成し、光学的情報記録領域１ｂに記録ピツト
列５を形成した構造となつている。クラツク信号
再生は別に設けられるクロツク信号発生器によつ
て行われる。 Based on the confidential disclosure agreement with the applicant, the optical information recording medium in the report is described as follows. As shown in FIG.
It has a structure in which a recording pit row 5 is formed in the optical information recording area 1b. Clock signal reproduction is performed by a separately provided clock signal generator.
しかしながら、上記の記録ピツト列を２列設け
た光学的情報記録媒体においては、第４図を用い
て説明した従来の光学的情報記録媒体の情報記録
方法では１例しか記録する事ができず、新して情
報記録方法が望まれていた。
However, in the optical information recording medium provided with two rows of recording pits, only one example of information can be recorded using the conventional information recording method of the optical information recording medium explained using FIG. A new method of recording information was desired.
上記の従来技術からの要望は隣接するトラツク
ガイド間に第１の光学的情報記録領域及び第２の
光学的情報記録領域とを有する光学的情報記録媒
体の情報記録方法において、中央の光ビームで情
報記録を行い、残りの２本の光ビームの内一方の
光ビームでトラツキング及びフオーカス制御を行
う３ビーム方式の光学系を用いて、
上記第１の光学的情報記録領域への情報記録に
は、第１のトラツクガイド上の第１の光ビームに
より、AT，AF制御を行い、第１の光学的情報
記録領域上の第２の光ビームによつてピツトの記
録を行い、
上記第２の光学的情報記録領域への情報記録に
は、上記３つの光ビームを１段移動させ、第２の
光学的情報記録領域上の第２の光ビームにより
AT，AF制御を行い、第２のトラツクガイド上
の第３の光ビームとによつてピツトの記録を行う
事を特徴とする本発明の光学的情報記録媒体の情
報記録方法によつて達成される。
The request from the above-mentioned prior art is to provide an information recording method for an optical information recording medium having a first optical information recording area and a second optical information recording area between adjacent track guides, in which a central light beam is used. Information is recorded in the first optical information recording area using a three-beam optical system in which information is recorded and one of the remaining two light beams performs tracking and focus control. , the first light beam on the first track guide performs AT and AF control, and the second light beam on the first optical information recording area records the pit; To record information in the optical information recording area, the three light beams described above are moved one step, and the second light beam on the second optical information recording area is used to record information on the optical information recording area.
This is achieved by the information recording method for an optical information recording medium of the present invention, which performs AT and AF control and records pits with a third light beam on a second track guide. Ru.
以下、図面を用いて本発明の実施例について説
明する。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の光学的情報記録媒体の情報記
録方法を示す説明図である。 FIG. 1 is an explanatory diagram showing an information recording method on an optical information recording medium according to the present invention.
第１図において、２は光学的情報の記録時ある
いは再生時において、トラツキングサーボ、フオ
ーカスサーボに用いるトラツクガイドで、１ａ，
１ｂはトラツクガイド２間に設けられた光学的情
報記録領域である。光学的情報記録領域１ａに情
報を記録ピツトとして書き込む場合、第１図に示
すようにＡ−１，Ａ−２，Ａ−３の３つのビーム
スポツトを配置する。すなわち、ビームスポツト
Ａ−１はトラツクガイド２上に、ビームスポツト
Ａ−２は光学的情報記録領域１ａ上に、ビームス
ポツトＡ−３は光学的情報記録領域１ｂ上に配置
される。前述したようにビームスポツトＡ−２は
ビーム強度が強く、このビームスポツトＡ−２に
よつてのみによつて光学的情報記録領域１ａに、
情報が記録ピツト列３として書き込まれる。 In FIG. 1, reference numeral 2 denotes a track guide used for tracking servo and focus servo when recording or reproducing optical information;
1b is an optical information recording area provided between the track guides 2. When writing information as recording pits in the optical information recording area 1a, three beam spots A-1, A-2, and A-3 are arranged as shown in FIG. That is, beam spot A-1 is placed on the track guide 2, beam spot A-2 is placed on the optical information recording area 1a, and beam spot A-3 is placed on the optical information recording area 1b. As mentioned above, the beam spot A-2 has a strong beam intensity, and only by this beam spot A-2 can the optical information recording area 1a be
Information is written as a recording pit row 3.
次に光学的情報記録領域１ｂに書き込む場合
は、ビームスポツトＡ−１，Ａ−２，Ａ−３をそ
れぞれビームスポツトＢ−１，Ｂ−２，Ｂ−３の
位置に移動させる。ビームスポツトＢ−３は隣接
するトラツクガイド上に、ビームスポツトＢ−２
は光学的記録領域１ｂ上に、ビームスポツトＢ−
１は光学的記録領域１ａ上に配置されて、ビーム
スポツトＢ−２によつて光学的情報記録領域１ｂ
に情報が記録ピツト列５として書き込まれる。 Next, when writing to the optical information recording area 1b, beam spots A-1, A-2, and A-3 are moved to the positions of beam spots B-1, B-2, and B-3, respectively. Beam spot B-3 is connected to beam spot B-2 on the adjacent track guide.
beam spot B- on the optical recording area 1b.
1 is placed on the optical recording area 1a, and the beam spot B-2 is arranged on the optical information recording area 1b.
Information is written in the form of a recording pit row 5.
次に上記光学的情報記録媒体の情報再生方法に
ついて説明する。 Next, a method for reproducing information from the optical information recording medium will be explained.
第２図は上記光学的情報記録媒体の情報再生方
法を示す説明図である。 FIG. 2 is an explanatory diagram showing a method for reproducing information from the optical information recording medium.
本実施例においては、情報再生効率を向上させ
る為に、同時に２列の記録ピツト列３，５から２
つの情報を再生する事が可能であり、光学系の移
動は２段づつ行えるので再生スピードを速くする
事ができる。 In this embodiment, in order to improve information reproduction efficiency, two recording pit rows 3 and 5 are simultaneously
Since the optical system can be moved two steps at a time, the reproduction speed can be increased.
第２図において、ビームスポツトＣ−１，Ｃ−
２，Ｃ−３の配置においては、ビームスポツトＣ
−１により、トラツキングサーボ（以下、ATと
略す）及びフオーカスサーボ（以下、AFと略す）
が行われ、ビームスポツトＣ−２及びＣ−３によ
り、記録ピツトの列の再生が行われる。ビームス
ポツトＤ−１，Ｄ−２，Ｄ−３の配置において
は、ビームスポツトＤ−３により、AT及びAF
の制御が行われ、ビームスポツトＤ−１及びＤ−
２により、記録ピツト列の再生が行われる。ビー
ムスポツトＥ−１，Ｅ−２，Ｅ−３の配置におい
ては、ビームスポツトＥ−２により、ATとAF
の制御が行われ、ビームスポツトＥ−１及びＥ−
３により、記録ピツト列の再生が行われる。 In Figure 2, beam spots C-1, C-
2. In the C-3 arrangement, beam spot C
-1, tracking servo (hereinafter abbreviated as AT) and focus servo (hereinafter abbreviated as AF)
is performed, and the row of recording pits is reproduced by beam spots C-2 and C-3. In the arrangement of beam spots D-1, D-2, and D-3, beam spot D-3 allows AT and AF.
control is performed, and the beam spots D-1 and D-
2, the recorded pit row is reproduced. In the arrangement of beam spots E-1, E-2, and E-3, beam spot E-2 allows AT and AF.
control is performed, and beam spots E-1 and E-
3, the recorded pit row is reproduced.
以上の本発明に用いられる光学的情報記録媒体
としては光カードの他に例えば円盤状の光デイス
ク等がある。 In addition to the optical card, the optical information recording medium used in the present invention includes, for example, a disk-shaped optical disk.
以上、詳細に述べたように、本発明の光学的情
報記録媒体の情報記録方法によれば、従来の中央
の光ビーム強度が両脇の光ビームの強度よりも強
い３ビーム方式の光学系を用いて２つの光学的情
報記録領域を有する光学的情報記録媒体に適した
情報記録方法を提供する事ができる。
As described in detail above, according to the information recording method for an optical information recording medium of the present invention, a conventional three-beam optical system in which the intensity of the central light beam is stronger than the intensity of the light beams on both sides is used. It is possible to provide an information recording method suitable for an optical information recording medium having two optical information recording areas.
第１図は本発明の光学的情報記録媒体の情報記
録方法の説明図である。第２図は本発明に用いら
れる光学的情報記録媒体の情報再生方法の説明図
である。第３図は従来の光学的情報記録媒体の部
分拡大図である。第４図は従来の光学的情報記録
媒体の情報記録方法の説明図である。第５図は本
発明に用いられる光学的情報記録媒体の部分拡大
図である。第６図は光学的情報記録再生装置の光
学系の概略図である。
１ａ，１ｂ…光学的情報記録領域、２…トラツ
クガイド、３，５…光学的記録情報列、Ａ−１，
Ａ−２，Ａ−３，Ｂ−１，Ｂ−２，Ｂ−３…光ビ
ームスポツト。
FIG. 1 is an explanatory diagram of an information recording method for an optical information recording medium according to the present invention. FIG. 2 is an explanatory diagram of a method for reproducing information from an optical information recording medium used in the present invention. FIG. 3 is a partially enlarged view of a conventional optical information recording medium. FIG. 4 is an explanatory diagram of a conventional information recording method on an optical information recording medium. FIG. 5 is a partially enlarged view of the optical information recording medium used in the present invention. FIG. 6 is a schematic diagram of the optical system of the optical information recording/reproducing device. 1a, 1b... Optical information recording area, 2... Track guide, 3, 5... Optical recording information string, A-1,
A-2, A-3, B-1, B-2, B-3...Light beam spots.
Claims (1)
御用のトラツクガイドの間に、第１の光学的情報
記録領域及び第２の光学的情報記録領域とを有す
る光学的情報記録媒体に情報を記録するに際し、
前記媒体上に、第１、第２及び第３の光ビームを
投射し、中央に位置する第２の光ビームで記録を
行ない、該第２の光ビームの両側に配された第１
又は第３の光ビームで前記トラツクガイドを走査
してトラツキング及びフオーカシング信号を得、
前記第１の光学的情報記録領域を記録する場合は
前記第１の光ビームでトラツクガイドを走査し、
第２の光学的情報記録領域を記録する場合は前記
第３の光ビームでトラツクガイドを走査すること
を特徴とする光学的情報記録媒体の情報記録方
法。1. When recording information on an optical information recording medium having a first optical information recording area and a second optical information recording area between adjacent track guides for tracking control and focus control,
First, second, and third light beams are projected onto the medium, the second light beam located at the center performs recording, and the first light beams located on both sides of the second light beam perform recording.
or scanning the track guide with a third light beam to obtain tracking and focusing signals;
When recording the first optical information recording area, scanning the track guide with the first light beam;
An information recording method for an optical information recording medium, characterized in that when recording in the second optical information recording area, a track guide is scanned with the third light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60133002A JPS61292228A (en) | 1985-06-20 | 1985-06-20 | Information recording method for optical information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60133002A JPS61292228A (en) | 1985-06-20 | 1985-06-20 | Information recording method for optical information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61292228A JPS61292228A (en) | 1986-12-23 |
| JPH0517613B2 true JPH0517613B2 (en) | 1993-03-09 |
Family
ID=15094486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60133002A Granted JPS61292228A (en) | 1985-06-20 | 1985-06-20 | Information recording method for optical information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61292228A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0239131A3 (en) * | 1986-03-28 | 1989-05-24 | Csk Corporation | Optical recording medium and tracking method therefor |
| JPH0196835A (en) * | 1987-10-07 | 1989-04-14 | Csk Corp | Tracking device for optical memory card |
| JP2596992B2 (en) * | 1988-11-30 | 1997-04-02 | 日本電気ホームエレクトロニクス株式会社 | Information reading method for optical disk |
| JP4685754B2 (en) * | 2006-12-28 | 2011-05-18 | 株式会社日立製作所 | Tracking method |
| JP5168493B2 (en) * | 2008-10-16 | 2013-03-21 | コニカミノルタアドバンストレイヤー株式会社 | Optical pickup device |
-
1985
- 1985-06-20 JP JP60133002A patent/JPS61292228A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61292228A (en) | 1986-12-23 |
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