JPH0383232A - Recording medium, signal recording method and signal regeneration method - Google Patents

Recording medium, signal recording method and signal regeneration method

Info

Publication number
JPH0383232A
JPH0383232A JP1219412A JP21941289A JPH0383232A JP H0383232 A JPH0383232 A JP H0383232A JP 1219412 A JP1219412 A JP 1219412A JP 21941289 A JP21941289 A JP 21941289A JP H0383232 A JPH0383232 A JP H0383232A
Authority
JP
Japan
Prior art keywords
signal
recording
recorded
displacement
track
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.)
Granted
Application number
JP1219412A
Other languages
Japanese (ja)
Other versions
JP2785368B2 (en
Inventor
Yoichiro Sako
曜一郎 佐古
Tamotsu Yamagami
保 山上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP1219412A priority Critical patent/JP2785368B2/en
Priority to KR1019900010950A priority patent/KR910005241A/en
Priority to US07/570,432 priority patent/US5148422A/en
Priority to DE69016133T priority patent/DE69016133T2/en
Priority to EP90309197A priority patent/EP0414518B1/en
Priority to AU61341/90A priority patent/AU626446B2/en
Priority to CA002023963A priority patent/CA2023963C/en
Priority to MYPI90001438A priority patent/MY107087A/en
Publication of JPH0383232A publication Critical patent/JPH0383232A/en
Application granted granted Critical
Publication of JP2785368B2 publication Critical patent/JP2785368B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1251—Formatting, e.g. arrangement of data block or words on the record carriers on discs for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • 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
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2525—Magneto-optical [MO] discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To attain accurate positioning at the time of reproducing a record by previously recording a signal including the clock signal component of a frequency at an integer ratio with the clock signal frequency of main information by means of displacement in the direction of a track width. CONSTITUTION:Recording is attained by displacement in the direction of the track width with the clock of a cycle which is integer-times as much as the channel clock cycle T of main information such as address information. In the displacement recording in the direction of the track width, a sector mark, a minute address, a second address, a block address and a frame address can be recorded at every frame. Thus, the block address can be detected by reading one frame as the most. Consequently, the block address can be read even in the middle of the block at the time of accessing to the desired block, high speed access is attained and accurate positioning is attained.

Description

【発明の詳細な説明】 Ａ、産業上の利用分野 本発明は、記録媒体、信号記録方法及び信号再生方法に
関し、特に主情報が記録される記録トラックの幅方向変
位により他の情報等が記録されるような記録媒体と、そ
の記録媒体に対する信号記録方法及び信号再生方法に関
する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a recording medium, a signal recording method, and a signal reproducing method, and in particular, the present invention relates to a recording medium, a signal recording method, and a signal reproducing method. The present invention relates to a recording medium, a signal recording method for the recording medium, and a signal reproducing method.

Ｂ０発明の概要 本発明は、記録トラック上にトラック方向に沿って主情
報が記録される記録媒体において、主情報のクロック信
号周波数と整数比の周波数のクロック信号成分を含む信
号、例えば所定記録単位毎の同期信号がトラック幅方向
変位により予め記録形成されて成る記録媒体を提供する
と共に、このような記録媒体を用いて、トラック上に主
情報を記録する際に、トラック幅方向変位により記録形
成された信号の再生信号よりクロック信号を得、また、
再生時にはトラック幅方向変位により記録形成された信
号の再生信号を用いてアクセス動作を行うことにより、
記録トラック上に記録される主情報信号に対して完全に
外部の信号によるクロッキングを可能とし、主情報以外
の情報を記録可能とするようにしたものである。B0 Summary of the Invention The present invention provides a recording medium in which main information is recorded on a recording track along the track direction, in which a signal containing a clock signal component having a frequency that is an integer ratio to the clock signal frequency of the main information, for example, a predetermined recording unit. In addition, when recording main information on a track using such a recording medium, the recording is formed by the displacement in the track width direction. A clock signal is obtained from the reproduced signal of the reproduced signal, and
At the time of reproduction, by performing an access operation using a reproduction signal of a signal recorded and formed by displacement in the track width direction,
The main information signal recorded on the recording track can be completely clocked by an external signal, and information other than the main information can be recorded.

Ｃ９従来の技術 光記録媒体、例えば光磁気ディスクにおいて、ディスク
上にトラッキング用の案内溝を予めスパイラル状あるい
は同心円状に形成しておき、この予め形成された案内溝
（いわゆるプリグループ）や、あるいはグループ間のラ
ンド部を記録トラックとして、この記録トラック上にト
ラック方向に沿って、磁気光学効果を利用したデータの
記録、再生を行うようにしたものが知られている。この
記録トラック上には、一般にアドレスとデータとが交互
に記録され、このアドレス情報に基づいてデータ管理等
が行われるようになっており、このアドレス情報によっ
てデータがブロック単位やセクタ単位で記録され、また
再生されるようになっている。C9 Conventional technology In an optical recording medium, such as a magneto-optical disk, a tracking guide groove is previously formed on the disk in a spiral or concentric shape, and the pre-formed guide groove (so-called pre-group) or It is known that a land portion between groups is used as a recording track, and data is recorded and reproduced on this recording track along the track direction using the magneto-optical effect. Addresses and data are generally recorded alternately on this recording track, and data management is performed based on this address information.Data is recorded in blocks or sectors based on this address information. , and is now being played again.

この場合には、ディスク回転変動によるジッタを吸収す
るために、記録トラックの一部にバッファ領域を設ける
必要がある。In this case, it is necessary to provide a buffer area in a part of the recording track in order to absorb jitter due to fluctuations in disk rotation.

Ｄ１発明が解決しようとする諜理 ところで、特開昭６３−８７６８２号公報において、ト
ラッキングエラーを検出するためのウオブリングトラッ
クを、時間コードでＦＭ変調して記録形成する技術が開
示されている。この技術においては、例えば２０．０５
　ｋ　Ｈｚ正弦波の搬送波信号を、該搬送波に比較して
十分低い周波数の時間コード信号に基づいてＦＭ変調し
てウオブリングトラックを形成しておき、再生時にトラ
ッキングエラー信号を得ると共に、この時間コードを復
調し、位置情報としての時間コードを得るようにしてい
る。D1 Problems to be Solved by the Invention Incidentally, Japanese Patent Laid-Open No. 87682/1982 discloses a technique for recording and forming a wobbling track for detecting tracking errors by FM modulating it with a time code. In this technique, for example, 20.05
A wobbling track is formed by FM modulating a kHz sine wave carrier signal based on a time code signal having a frequency sufficiently lower than that of the carrier wave, and a tracking error signal is obtained during playback, and this time code is is demodulated to obtain a time code as position information.

しかしながらこの先行技術において、トラックのウオブ
リング信号によってばトラック上の記録信号のクロッキ
ングをとることはできず、また、このウオブリング信号
の時間情報は１ブロツクの間に１まとまりの情報が入れ
られている程度であって、抽出精度が低く、ｌブロック
を読み出さないとデコードできないこと等から、正確な
位置合わせが困難である。However, in this prior art, it is not possible to clock the recording signal on the track using the wobbling signal of the track, and the time information of this wobbling signal contains one piece of information in one block. Accurate alignment is difficult because the extraction accuracy is low and decoding cannot be performed unless l blocks are read.

本発明は、このような実情に鑑みてなされたものであり
、トラック幅方向の変位により予め記録形成される信号
により、トランク上に記録される主信号のクロッキング
が行え、信号記録再生時等の正確な位置合わせも可能と
するような記録媒体、信号記録方法及び信号再生方法の
提供を目的とするものである。The present invention has been made in view of the above circumstances, and it is possible to clock the main signal recorded on the trunk using a signal that is recorded and formed in advance by displacement in the track width direction, and to clock the main signal recorded on the trunk during signal recording and reproduction. The object of the present invention is to provide a recording medium, a signal recording method, and a signal reproducing method that enable accurate positioning of the signals.

２３課題を解決するための手段 本発明に係る記録媒体は、記録トラック上にトラック方
向に沿って主情報が記録される記録媒体において、上記
主情報のクロック信号周波数と整数比の周波数のクロッ
ク信号成分を含む信号がトラック幅方向変位により予め
記録形成されて成るものであり、また、このような記録
媒体の、所定記録単位毎に同期信号が上記トラック幅方
向変位により記録形成されて威るものである。23 Means for Solving the Problems The recording medium according to the present invention is a recording medium in which main information is recorded on a recording track along the track direction, in which a clock signal having a frequency that is an integer ratio of the clock signal frequency of the main information is provided. A signal containing a component is recorded in advance by displacement in the track width direction, and a synchronization signal is recorded and formed in each predetermined recording unit of such a recording medium by the displacement in the track width direction. It is.

次に、本発明に係る信号記録方法は、記録トラック上に
記録される主情報のクロック信号周波数と整数比の周波
数のクロック信号成分を含む信号がトラック幅方向変位
により予め記録形成されて成る記録媒体を用い、上記主
情報を記録する際のクロック信号を、上記トラック幅方
向変位により記録形成された信号の再生信号より得るも
のである。Next, in the signal recording method according to the present invention, a signal including a clock signal component having an integer ratio of the clock signal frequency of the main information recorded on the recording track is recorded in advance by displacement in the track width direction. A clock signal for recording the main information on the medium is obtained from a reproduction signal of the signal recorded and formed by the displacement in the track width direction.

さらに、本発明に係る信号再生方法は、記録トランク上
に記録される主情報のクロック信号周波数と整数比の周
波数のクロック信号成分を含む信号がトラック幅方向変
位により予め記録形成されて成る記録媒体を用い、上記
主情報を再生する際に、上記トラック幅方向変位により
記録形成された信号の再生信号を用いてアクセス動作を
行うものである。Furthermore, the signal reproducing method according to the present invention provides a recording medium in which a signal including a clock signal component having a frequency that is an integer ratio to the clock signal frequency of the main information recorded on the recording trunk is recorded in advance by displacement in the track width direction. When reproducing the main information, an access operation is performed using a reproduction signal of a signal recorded and formed by the displacement in the track width direction.

１１作用 本発明に係る記録媒体によれば、トラック幅方向の変位
を検出した再生信号によりトラック上の主信号のクロッ
キングをとることができ、また所定記録単位毎の同期を
とることができる。11 Effects According to the recording medium according to the present invention, it is possible to clock the main signal on the track using the reproduced signal that detects the displacement in the track width direction, and it is also possible to synchronize every predetermined recording unit.

また、本発明に係る信号記録方法によれば、トランク幅
方向変位により記録形成された信号により、上記主情報
を記録する際のクロック信号を得ることができ、完全な
外部クロッキングが実現できる。Furthermore, according to the signal recording method of the present invention, a clock signal for recording the main information can be obtained from the signal recorded by the displacement in the trunk width direction, and complete external clocking can be realized.

さらに、本発明に係る信号再生方法によれば、上記主情
報を再生する際のアクセス動作を、上記トラック幅方向
変位により記録形成された信号の再生信号を用いて行う
ことができる。Further, according to the signal reproducing method according to the present invention, the access operation when reproducing the main information can be performed using the reproduced signal of the signal recorded and formed by the displacement in the track width direction.

Ｇ、実施例 以下、本発明の実施例を図面を参照しながら説明する。G. Example Embodiments of the present invention will be described below with reference to the drawings.

第１図は、本発明に係る記録媒体の一実施例となる光磁
気ディスクの記録トラックの記録フォーマットをトラッ
ク幅方向変位による記録情報と共に示す図である。この
実施例に用いられる光磁気ディスクは、例えば磁気光学
効果を有する垂直磁化膜が透明基板上に形成されて成る
ものであり、この光磁気ディスク上に、トラッキング用
の案内溝がスパイラル状にあるいは同心円状に予め形成
されており（いわゆるプリグループ）、このプリグルー
プあるいはグループ間のランドを記録トラックとしてい
る。また、この記録トラックは、例えば、少なくとも制
御信号（同期・クロック等）を含む再生専用の副次的な
情報のベースバンド信号がトラック幅方向変位（トラッ
ク幅方向偏移、あるいはトラック幅方向変調）により予
め記録形成されて成っている。FIG. 1 is a diagram showing a recording format of a recording track of a magneto-optical disk, which is an embodiment of a recording medium according to the present invention, together with recorded information based on displacement in the track width direction. The magneto-optical disk used in this embodiment is one in which a perpendicularly magnetized film having a magneto-optic effect is formed on a transparent substrate, and a tracking guide groove is formed in a spiral or a spiral shape on the magneto-optical disk. They are pre-formed in concentric circles (so-called pre-groups), and these pre-groups or the lands between the groups are used as recording tracks. Further, in this recording track, for example, a baseband signal of secondary information exclusive for reproduction including at least a control signal (synchronization, clock, etc.) is displaced in the track width direction (track width direction deviation or track width direction modulation). The record is formed in advance by.

この第１図において、記録トラックのトラック方向に沿
って記録される主情報の記録フォーマットの具体例とし
ては、いわゆるＣＤ（コンパクトディスク）のフォーマ
ットと同様なものとしている。すなわち情報記録単位と
なる１ブロツク（ｌセクタ）が第Ｏフレームから第９７
フレームまでの９８フレームから威り、ｌフレームはチ
ャンネルクロック周！ｌ１ｌＴの５８８倍（５８８Ｔ）
で、１フレーム内には、フレーム同期信号、サブコード
及びデータ（パリティを含む）の各記録領域が設けられ
ている。すなわち、ｌフレームの先頭部分には、２４Ｔ
（２４チヤンネルビツト）のフレーム同期信号と１４Ｔ
のサブコード領域が設けられ、これらがそれぞれ３Ｔの
接続ビットを介して接続されており、残り５４４Ｔには
３２シンボル（３２バイト）のサンプルデータ及びパリ
ティデータがいわゆるＥＦＭ（８−１４変１り方式によ
り変調されて配設されている。フレーム同期信号は、１
１Ｔの反転間隔が２回連続することによって、上記ＥＦ
Ｍ方式にない、いわゆるアウトオブルールのパターンと
なっている。１４Ｔのサブコード領域は、上記ｌシンボ
ル分に対応している。In FIG. 1, a specific example of the recording format of the main information recorded along the track direction of the recording track is similar to the format of a so-called CD (compact disc). In other words, one block (l sector), which is a unit of information recording, is from the Oth frame to the 97th frame.
From 98 frames to frames, l frames are channel clock cycles! 588 times l1lT (588T)
Each frame includes recording areas for a frame synchronization signal, subcode, and data (including parity). In other words, at the beginning of the l frame, 24T
(24 channel bits) frame synchronization signal and 14T
subcode areas are provided, each of which is connected via a 3T connection bit, and the remaining 544T contains 32 symbols (32 bytes) of sample data and parity data in the so-called EFM (8-14 variable 1 format). The frame synchronization signal is modulated by 1.
By repeating the reversal interval of 1T twice, the above EF
This is a so-called out-of-rule pattern that is not found in the M method. The 14T subcode area corresponds to the above l symbols.

このような主情報が記録される記録トラック自体は、上
述したように、副次的な情報信号によりトラック幅方向
に変位されて予め記録形成されたものである。The recording track itself on which such main information is recorded is, as described above, previously recorded by being displaced in the track width direction by a subsidiary information signal.

ここで、第１図の具体例における上記幅方向変位による
記録情報としては、主情報のフレーム同期信号部分に主
情報と同じフォーマットの同期信号、すなわち、反転間
隔がＩＩＴで２回連続する同期信号を配置し、以下反転
間隔を例えば７Ｔ、１１Ｔ（・７Ｔ＋４７）、４Ｔとし
て、上記２２Ｔのフレーム同期パターンを含むフレーム
先頭部分の４４Ｔを構成している。この同期信号は、フ
レーム単位の同期をとるためのものであるが、これらの
フレームが複数個（９８個）集まって構成される上記ブ
ロック（セクタ）の単位での同期をとるために、上記先
頭４４Ｔの終端部の８丁をブロック同期用のセクタマー
ク（ブロックマーク）として用いるようにしてもよい０
例えば、ブロック先頭のフレームの上記セクタマークと
しては、８Ｔの中央で立ち上がる形状、すなわちいわゆ
るＰＥ（フェイズエンコーディング）方式の′″Ｏ”を
書き込んでおき、それ以外のフレームのセクタマークに
は“１′を書き込んでおくことにより、ブロック先頭フ
レームをそれ以外のフレームと区別することができる。Here, the recorded information due to the width direction displacement in the specific example of FIG. 1 includes a synchronization signal in the same format as the main information in the frame synchronization signal portion of the main information, that is, a synchronization signal with two consecutive inversion intervals of IIT. are arranged, and the inversion intervals are set to, for example, 7T, 11T (7T+47), and 4T to form 44T at the beginning of the frame including the 22T frame synchronization pattern. This synchronization signal is for synchronizing frame units, but in order to synchronize each block (sector) made up of a plurality (98) of these frames, it is necessary to synchronize the first frame. The eight terminals of 44T may be used as sector marks (block marks) for block synchronization.
For example, as the sector mark of the first frame of the block, write a shape that rises at the center of 8T, that is, ``O'' of the so-called PE (phase encoding) method, and write ``1'' as the sector mark of the other frames. By writing , it is possible to distinguish the first frame of the block from other frames.

次に、ｌフレーム５８８Ｔ　（チャンネルビット）の内
、フレーム先頭の上記４４Ｔの同期用領域の他の５４４
Ｔのデータ領域には、例えばアドレス情報等の副次的な
情報を、上記主情報のチャンネルクロック周ｖｉＴの整
数倍の周期（例えば８Ｔ）のクロックを基準として、ト
ラック幅方向変位により記録形成している。このトラッ
ク幅方向変位記録の際の変調方式として、第１図の例で
はｌビットスロットが８７（７）ＰＥ方式を採用してい
るが、クロック周期がチャンネルクロック周期と整数比
の関係にあれば、いわゆるバイフヱーズマーク変調方式
やＥＦＭ　（８−１４変１Ｐｉ）方式等を採用してもよ
い。ここで、１ビツト８Ｔの上記ＰＥ方式でトラック幅
方向記録を行う場合に、上記５４４Ｔのデータ領域には
６８（・５４４／８）ビットの情報を記録できる。この
１フレーム当たり６８ビツトの情報としてアドレスを記
録する場合に、例えば上記ＣＤフォーマットに準じて、
分、秒、ブロックの各アドレスに、それぞれＢＣＤ表現
の十進数２桁に相当する８ビツトを用いることが考えら
れる。Next, among the 588T (channel bits) of the l frame, the other 544 bits of the 44T synchronization area at the beginning of the frame are
In the data area T, secondary information such as address information is recorded and formed by displacement in the track width direction with reference to a clock having a cycle that is an integral multiple of the channel clock frequency viT of the main information (for example, 8T). ing. As the modulation method for recording displacement in the track width direction, in the example shown in FIG. , a so-called biphase mark modulation method, an EFM (8-14 variation 1Pi) method, etc. may be adopted. Here, when recording in the track width direction using the 1-bit 8T PE method, 68 (.544/8) bits of information can be recorded in the 544T data area. When recording an address as 68-bit information per frame, for example, according to the above CD format,
It is conceivable to use 8 bits corresponding to two decimal digits in BCD representation for each address of minutes, seconds, and blocks.

このとき、セクタマークに２ビット用い、分、秒、ブロ
ック、フレームの各アドレスにそれぞれ８ビツトを用い
ることにすれば、２＋８Ｘ４より計３４ビットとなり、
この３４ビツトのアドレスデータに連続してこれらの反
転データを配置して、計６８ビットとすることができる
。この場合、セクタマーク、分アドレス、秒アドレス、
ブロックアドレス、フレームアドレスは、各フレーム毎
に２重書きされることになる。このようにフレームアド
レス、ブロックアドレスをフレ・−ム毎に予め記録する
ことにより、従来は１ブロック読み込まないと検出でき
なかったブロックアドレスを、多くとも１フレーム読み
込むことで検出することができる。したがって、所望の
ブロックにアクセスしたい時、ブロックの途中からでも
ブロックアドレスを読み込むことができるので、高速に
アクセスすることが可能となる。また、ブロックアドレ
スは１ブロツク（９８フレーム）内に１９６重書きされ
ているので、ブロックアドレスが読み込めなくなること
は皆無に近く、ブロックアドレスの信頼性は非常に高い
ものとなる。さらに、従来ＣＤフォーマットでは使用さ
れていなったフレームアドレスを記録することができ、
フレーム単位のアクセスが可能になる。At this time, if we use 2 bits for the sector mark and 8 bits each for the minute, second, block, and frame addresses, the total will be 34 bits (2+8X4).
By arranging these inverted data consecutively to the 34-bit address data, a total of 68 bits can be obtained. In this case, sector mark, minute address, second address,
The block address and frame address are double-written for each frame. By recording frame addresses and block addresses in advance for each frame in this way, block addresses that could not be detected conventionally without reading one block can be detected by reading at most one frame. Therefore, when a desired block is desired to be accessed, the block address can be read even from the middle of the block, making it possible to access the block at high speed. Furthermore, since the block address is overwritten 196 times within one block (98 frames), it is almost impossible for the block address to become unreadable, and the reliability of the block address is extremely high. Furthermore, it is possible to record frame addresses that are no longer used in conventional CD formats.
Allows frame-by-frame access.

ところで、一般のＣＤフォーマントの記録密度を越える
ようなディスクの場合には、上記アドレス構造では１枚
のディスク上に記録可能な全てのフレームを区別できな
くなる虞れがあるため、上記骨、秒、ブロックの計２４
ビットをまとめて１つの２進数表現のアドレスデータと
することにより、２　”（＝１６．７７７．２１６）ブ
ロックを区別できるようになる。By the way, in the case of a disc whose recording density exceeds the recording density of a general CD format, there is a risk that the above address structure will not be able to distinguish all the frames that can be recorded on one disc. , total of 24 blocks
By combining the bits into one binary address data, it becomes possible to distinguish between 2'' (=16.777.216) blocks.

次に、このようなトランク幅方向の変位によりアドレス
等の副次的な情報が記録形成された記録媒体である光磁
気ディスクの記録トラックに対して、主情報を記録／再
生するための具体例について、第２図を参照しながら説
明する。Next, a specific example of recording/reproducing main information on a recording track of a magneto-optical disk, which is a recording medium in which secondary information such as an address is recorded and formed by such displacement in the trunk width direction. will be explained with reference to FIG.

この第２図において、光磁気ディスク１０は、上記副次
的な情報がトラック幅方向の変位により記録形成された
スパイラル状あるいは同心円状の記録トラックを有して
いる。この光磁気ディスク１０は、スピンドルモータ１
１により一定線速度（ＣＬＶ）あるいは一定角速度（Ｃ
ＡＶ）で回転駆動されるようになっている。記録／再生
のためのレーザ光源１２（レーザダイオード等）からの
レーザビームは、コリメータレンズ１３で平行光ビーム
とされた後、ビームスフ゛りン夕１４、フォーカシング
及びトラッキングのためのいわゆる２軸デバイスの対物
レンズ１５を介して、光磁気ディスク１０上に照射され
る。この光磁気ディスク１０からの反射ビームは、ビー
ムスプリッタ１４で分離され、１／２波長板、収束レン
ズ、シリンドリカルレンズ等の光学系１６を介して偏光
ビームスプリッタ１７に入射される。この偏光ビームス
プリンタ１７においていわゆるＰ＠光成分とＳ偏光成分
とに分離され、トラッキングエラー信号、フォーカスエ
ラー信号、光磁気信号（ＭＯ倍信号を検出するためのフ
ォトディテクタ１８．１９に入射される。In FIG. 2, the magneto-optical disk 10 has a spiral or concentric recording track in which the above-mentioned subsidiary information is recorded and formed by displacement in the track width direction. This magneto-optical disk 10 is connected to a spindle motor 1.
1 gives constant linear velocity (CLV) or constant angular velocity (C
AV). A laser beam from a laser light source 12 (laser diode, etc.) for recording/reproduction is collimated into a parallel light beam by a collimator lens 13, and then passed through a beam deflector 14 and an objective of a so-called two-axis device for focusing and tracking. The light is irradiated onto the magneto-optical disk 10 through the lens 15. The reflected beam from the magneto-optical disk 10 is separated by a beam splitter 14, and is incident on a polarizing beam splitter 17 via an optical system 16 such as a 1/2 wavelength plate, a converging lens, and a cylindrical lens. In this polarization beam splinter 17, the light is separated into a so-called P@ light component and an S polarization component, and the light is input to photodetectors 18 and 19 for detecting a tracking error signal, a focus error signal, and a magneto-optical signal (MO multiplied signal).

これらのフォトディテクタ１８．１９からの出力を差動
増幅器２０に送って差をとることにより光磁気信号（Ｍ
Ｏ倍信号を抽出し、この差動増幅器２０からの出力信号
をデータ検出回路２１に送っている。またフォトディテ
クタ１８では、例えば受光部が４分割された素子を用い
てトラッキングエラー信号、フォーカスエラー信号の検
出も行っており、トラッキングエラー信号の高域成分か
ら、上記トラック幅方向変位により記録された副次的情
報の信号を得ることができる。このトラッキングエラー
信号の高域成分として取り出されるトラック幅方向変位
記録信号には、上述したように、記録トラック上にトラ
ック方向に沿って記録される主情報のクロック周波数と
整数比の関係にあるクロック信号成分が含まれており、
また主情報の所定記録単位毎の同期信号（例えばフレー
ム同期信号）も含まれていることから、このトラック幅
方向変位記録信号をクロック・同期信号検出回路２２に
送ることにより、クロック信号や同期信号を検出するこ
とができる。ここで検出されたクロック信号や同期信号
は、データ検出回路２１に送って上記光磁気信号（ＭＯ
倍信号からデータを検出し再生する際のクロックや同期
として使用できる。また、上記実施例のようにトラック
幅方向変位によりアドレス情報が記録されている場合に
は、例えばブロック（セクタ）アドレスやフレームアド
レスを指定して所定のデータをアクセスする際のアドレ
ス情報をトランク幅方向変位記録信号から再生して使用
することができる０次に、上記主情報を記録トランク上
に光磁気記録する場合には、主情報データを記録信号出
力回路２３に送って所定のクロックで変調するわけであ
るが、このクロックとして上記クロック・同期信号検出
回路２２からのクロック信号や同期信号を使用すること
ができる。この場合も、記録トラック上に主情報を記録
するためにディスクをアクセスする際には、上記トラッ
ク幅方向変位記録された同期信号を用いることができ、
さらに、所定のデータを、例えばブロック（セクタ）ア
ドレスやフレームアドレスを指定してアクセスする際に
は、上記トラック幅方向変位記録されたアドレス情報を
用いることができる。なお、記録信号出力回路２３から
の信号は磁界変調駆動回路２４を介して磁気へラド２５
に送られ、この磁気ヘッド２５からの磁界が光磁気ディ
スク１０に印加されると共に、上記レーザ光［１２から
の書き込みレーザ光が照射されることによって、上記主
情報が上記記録トラック上にトラック方向に沿って光磁
気記録される。これは磁界変調方式で記録する場合の具
体例であるが、光変調方式の記録にも適用できることは
勿論である。By sending the outputs from these photodetectors 18 and 19 to a differential amplifier 20 and taking the difference, a magneto-optical signal (M
The O times signal is extracted and the output signal from the differential amplifier 20 is sent to the data detection circuit 21. In addition, the photodetector 18 also detects tracking error signals and focus error signals using, for example, an element whose light receiving section is divided into four parts, and detects the sub-fields recorded by the displacement in the track width direction from the high-frequency components of the tracking error signal. A signal of subsequent information can be obtained. As mentioned above, the track width direction displacement recording signal extracted as a high-frequency component of this tracking error signal includes a clock that has an integer ratio relationship with the clock frequency of the main information recorded on the recording track along the track direction. Contains signal components,
Also, since a synchronization signal (for example, a frame synchronization signal) for each predetermined recording unit of main information is included, by sending this track width direction displacement recording signal to the clock/synchronization signal detection circuit 22, the clock signal and synchronization signal can be detected. can be detected. The clock signal and synchronization signal detected here are sent to the data detection circuit 21 and the magneto-optical signal (MO
It can be used as a clock or synchronization when detecting and reproducing data from a doubled signal. In addition, when address information is recorded by displacement in the track width direction as in the above embodiment, the address information when accessing predetermined data by specifying a block (sector) address or frame address, for example, can be Next, when the above-mentioned main information is magneto-optically recorded on the recording trunk, the main information data is sent to the recording signal output circuit 23 and modulated with a predetermined clock. However, the clock signal or synchronization signal from the clock/synchronization signal detection circuit 22 can be used as this clock. In this case as well, when accessing the disk to record main information on the recording track, the synchronization signal recorded by the displacement in the track width direction can be used.
Furthermore, when accessing predetermined data by specifying, for example, a block (sector) address or a frame address, the address information recorded with the displacement in the track width direction can be used. Note that the signal from the recording signal output circuit 23 is sent to the magnetic herad 25 via the magnetic field modulation drive circuit 24.
The magnetic field from the magnetic head 25 is applied to the magneto-optical disk 10, and the write laser beam from the laser beam [12] is irradiated, so that the main information is written on the recording track in the track direction. magneto-optical recording is performed along the Although this is a specific example of recording using a magnetic field modulation method, it goes without saying that it can also be applied to recording using an optical modulation method.

このように、トラック幅方向の変位により、主情報のク
ロック信号周波数と整数比の周波数のクロック信号成分
を含む信号やフレーム同期信号を予め記録形成している
ため、このトラック幅方向変位記録信号を再生すること
で、主情報信号の再生時や記録時に、完全な外部クロッ
キングが可能となり、フレーム単位での正確な位置合わ
せが行え、ディスクアクセスが容易に行える。また、ト
ラック上に記録される主情報信号のみでクロッキングや
同期をとる方式に比べ、ディスク回転変動によるジッタ
を吸収するためのバッファ領域を設ける必要がなくなる
。さらに、上記トラック幅方向の変位によりアドレス情
報を記録しておくことにより、記録／再生時のフレーム
やブロックを指定してのアクセスも容易かつ高精度に行
える。In this way, since a signal containing a clock signal component having a frequency that is an integer ratio of the clock signal frequency of the main information and a frame synchronization signal are recorded in advance by the displacement in the track width direction, this track width direction displacement recording signal is By reproducing the main information signal, complete external clocking is possible when reproducing or recording the main information signal, allowing accurate positioning on a frame-by-frame basis and facilitating disk access. Furthermore, compared to a method in which clocking and synchronization are performed only using the main information signal recorded on the track, there is no need to provide a buffer area to absorb jitter due to variations in disk rotation. Furthermore, by recording address information based on the displacement in the track width direction, access by specifying a frame or block during recording/reproduction can be easily and accurately performed.

このように、記録トラック自体の幅方向変位により同期
やアドレス等の情報が予め記録された光ディスク等の媒
体は、ディスク製造時にマスターディスクやスタンバ−
を用いたプレス工程等を経て容易に大量生産が可能であ
る。In this way, media such as optical discs on which information such as synchronization and addresses are pre-recorded by the widthwise displacement of the recording track itself are used as master discs and standby discs during disc manufacturing.
It can be easily mass-produced through a pressing process using.

なお、本発明は上記実施例に限定されず、例えば、記録
媒体は光磁気ディスクの他にも、例えば有機色素系光デ
ィスクや各種追記型ディスク、重ね書き可能ディスク、
光カード、光磁気カード等に適用でき、主情報中に同期
信号を含ませなくてもよく、含ませた場合には同期信号
は全てトラック軸方向変位記録信号から得るようにすれ
ばよい。Note that the present invention is not limited to the above-mentioned embodiments, and for example, the recording medium may include, in addition to magneto-optical disks, for example, organic dye-based optical disks, various write-once disks, overwritable disks,
It can be applied to optical cards, magneto-optical cards, etc., and it is not necessary to include a synchronization signal in the main information; if it is included, all the synchronization signals may be obtained from the track axis direction displacement recording signal.

また、上記トランク幅方向の変位により、ソフトウェア
プログラムデータ等を記録するようにしてもよい、さら
に、主情報及びトラック幅方向変位記録情報の記録フォ
ーマットとしては、第１図の具体例に限定されないこと
は勿論である。Further, software program data, etc. may be recorded by the displacement in the trunk width direction.Furthermore, the recording format of the main information and track width direction displacement recording information is not limited to the specific example shown in FIG. Of course.

Ｈ０発明の効果 以上の説明からも明らかなように、本発明に係る記録媒
体によれば、トラック幅方向の変位により主情報のクロ
ックと周波数比が整数の関係のクロックを含む信号や所
定記録単位毎の同期信号が記録されているため、このト
ラック幅方向変位記録信号を検出した再生信号に基づき
、トラック上の主情報信号のクロッキングをとることが
でき、所定記録単位毎の同期をとることができる。H0 Effects of the Invention As is clear from the above explanation, according to the recording medium of the present invention, a signal including a clock having an integer frequency ratio with respect to the clock of the main information or a predetermined recording unit is generated by displacement in the track width direction. Since the synchronization signal for each recording unit is recorded, the main information signal on the track can be clocked based on the playback signal that detects this track width direction displacement recording signal, and synchronization can be achieved for each predetermined recording unit. I can do it.

また、本発明に係る信号記録方法によれば、トラック幅
方向変位により記録形成された信号により、上記主情報
を記録する際のクロック信号を得ることができ、完全な
外部クロッキングが実現できる。Further, according to the signal recording method according to the present invention, a clock signal for recording the main information can be obtained by a signal recorded and formed by displacement in the track width direction, and perfect external clocking can be realized.

さらに、本発明に係る信号再生方法によれば、記録トラ
ック上に記録された主情報を再生する際のアクセス動作
を、上記トラック幅方向変位により記録形成された信号
の再生信号を用いて行うことができる。Furthermore, according to the signal reproducing method according to the present invention, an access operation when reproducing main information recorded on a recording track is performed using a reproduction signal of a signal recorded and formed by the displacement in the track width direction. I can do it.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明に係る記録媒体の一実施例の記録フォー
マットを示す図であり、第２図は本発明の記録／再生方
法の説明に供する記録／再生装置の具体例を示すブロッ
ク回路図である。 １０　　・・・・光磁気ディスク ｌ　・・・・スピンドルモータ ８．１９　・・・・フォトディテクタ ｌ　・・・・データ検出回路 ２　・・・・クロック・同期検出回路 ３　・・・・記録信号出力回路 ４　・・・・磁界変調駆動回路 ５　・・・・磁界変調光磁気記録用磁気ヘッドFIG. 1 is a diagram showing a recording format of an embodiment of a recording medium according to the present invention, and FIG. 2 is a block circuit diagram showing a specific example of a recording/reproducing apparatus for explaining the recording/reproducing method of the present invention. It is. 10...Magneto-optical disk l...Spindle motor 8.19...Photodetector l...Data detection circuit 2...Clock/synchronization detection circuit 3...Record signal output circuit 4...Magnetic field modulation drive circuit 5...Magnetic head for magnetic field modulation magneto-optical recording

Claims (4)

【特許請求の範囲】[Claims] （１）記録トラック上にトラック方向に沿って主情報が
記録される記録媒体において、 上記主情報のクロック信号周波数と整数比の周波数のク
ロック信号成分を含む信号がトラック幅方向変位により
予め記録形成されて成ることを特徴とする記録媒体。(1) In a recording medium in which main information is recorded on a recording track along the track direction, a signal containing a clock signal component having a frequency that is an integer ratio to the clock signal frequency of the main information is pre-recorded by displacement in the track width direction. A recording medium characterized by comprising: （２）所定記録単位毎に同期信号が上記トラック幅方向
変位により記録形成されて成ることを特徴とする請求項
（１）記載の記録媒体。(2) The recording medium according to claim (1), wherein the synchronization signal is recorded in each predetermined recording unit by the displacement in the track width direction. （３）記録トラック上に記録される主情報のクロック信
号周波数と整数比の周波数のクロック信号成分を含む信
号がトラック幅方向変位により予め記録形成されて成る
記録媒体を用い、 上記主情報を記録する際のクロック信号を、上記トラッ
ク幅方向変位により記録形成された信号の再生信号より
得ることを特徴とする信号記録方法。(3) The above main information is recorded using a recording medium in which a signal including a clock signal component having a frequency that is an integer ratio of the clock signal frequency of the main information recorded on the recording track is recorded in advance by displacement in the track width direction. A signal recording method characterized in that a clock signal for recording is obtained from a reproduced signal of a signal recorded and formed by the displacement in the track width direction. （４）記録トラック上に記録される主情報のクロック信
号周波数と整数比の周波数のクロック信号成分を含む信
号がトラック幅方向変位により予め記録形成されて成る
記録媒体を用い、 上記主情報を再生する際に、上記トラック幅方向変位に
より記録形成された信号の再生信号を用いてアクセス動
作を行うことを特徴とする信号再生方法。(4) Reproducing the main information using a recording medium in which a signal including a clock signal component having a frequency that is an integer ratio of the clock signal frequency of the main information recorded on the recording track is recorded in advance by displacement in the track width direction. A signal reproducing method characterized in that an access operation is performed using a reproduced signal of a signal recorded and formed by the displacement in the track width direction.
JP1219412A 1989-08-25 1989-08-25 Disk-shaped recording medium, method of reproducing and recording disk-shaped recording medium Expired - Lifetime JP2785368B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP1219412A JP2785368B2 (en) 1989-08-25 1989-08-25 Disk-shaped recording medium, method of reproducing and recording disk-shaped recording medium
KR1019900010950A KR910005241A (en) 1989-08-25 1990-07-19 Recording medium, signal recording method and signal reproduction method
US07/570,432 US5148422A (en) 1989-08-25 1990-08-21 Optical recording medium having a data recording track with offset data storing regions
EP90309197A EP0414518B1 (en) 1989-08-25 1990-08-22 Optical recording medium and method of and apparatus for recording and reproducing information therein
DE69016133T DE69016133T2 (en) 1989-08-25 1990-08-22 Optical recording medium, method therefor and apparatus for recording and reproducing data contained therein.
AU61341/90A AU626446B2 (en) 1989-08-25 1990-08-24 Optical recording medium and method for recording and reproducing information therein
CA002023963A CA2023963C (en) 1989-08-25 1990-08-24 Optical recording medium and method for recording and reproducing information therein
MYPI90001438A MY107087A (en) 1989-08-25 1990-08-24 Optical recording medium and method of and apparatus for recording and reproducing information therein.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1219412A JP2785368B2 (en) 1989-08-25 1989-08-25 Disk-shaped recording medium, method of reproducing and recording disk-shaped recording medium

Publications (2)

Publication Number Publication Date
JPH0383232A true JPH0383232A (en) 1991-04-09
JP2785368B2 JP2785368B2 (en) 1998-08-13

Family

ID=16734999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1219412A Expired - Lifetime JP2785368B2 (en) 1989-08-25 1989-08-25 Disk-shaped recording medium, method of reproducing and recording disk-shaped recording medium

Country Status (2)

Country Link
JP (1) JP2785368B2 (en)
KR (1) KR910005241A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0554386A (en) * 1991-08-20 1993-03-05 Sony Corp Recording and reproducing device
EP0880129A1 (en) * 1996-02-08 1998-11-25 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
JP2002342941A (en) * 2001-03-12 2002-11-29 Sony Corp Disk recording medium, cutting device and disk drive
JP2010205406A (en) * 2001-03-19 2010-09-16 Sony Corp Reproducing device, recording device, controlling chip, and disc medium
USRE43458E1 (en) 2003-11-10 2012-06-12 Cleland James M Table top refrigerated beverage dispenser
US8270267B2 (en) 2001-03-19 2012-09-18 Sony Corporation Method of, and apparatus for, recording address information to disc medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01194137A (en) * 1980-01-09 1989-08-04 Philips Gloeilampenfab:Nv Information recorder of recording carrier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01194137A (en) * 1980-01-09 1989-08-04 Philips Gloeilampenfab:Nv Information recorder of recording carrier

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0554386A (en) * 1991-08-20 1993-03-05 Sony Corp Recording and reproducing device
US6269069B1 (en) 1996-02-08 2001-07-31 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
US6538979B2 (en) 1996-02-08 2003-03-25 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
EP1022739A2 (en) * 1996-02-08 2000-07-26 Matsushita Electronics Corporation Optical disk, optical disk device, and method of reproducing information on optical disk
EP1022739A3 (en) * 1996-02-08 2000-08-30 Matsushita Electronics Corporation Optical disk, optical disk device, and method of reproducing information on optical disk
EP0880129A1 (en) * 1996-02-08 1998-11-25 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
US6266309B1 (en) 1996-02-08 2001-07-24 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
EP0880129A4 (en) * 1996-02-08 1999-10-06 Matsushita Electric Ind Co Ltd Optical disk, optical disk device, and method of reproducing information on optical disk
US6269068B1 (en) 1996-02-08 2001-07-31 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
US6266307B1 (en) 1996-02-08 2001-07-24 Matsushita Electric Industrial Co., Ltd. Optical disk, optical disk device, and method of reproducing information on optical disk
JP2002342941A (en) * 2001-03-12 2002-11-29 Sony Corp Disk recording medium, cutting device and disk drive
US8254226B2 (en) 2001-03-12 2012-08-28 Sony Corporation Disc-shaped recording medium, cutting apparatus for same, and disc drive
JP2010205406A (en) * 2001-03-19 2010-09-16 Sony Corp Reproducing device, recording device, controlling chip, and disc medium
JP2011170962A (en) * 2001-03-19 2011-09-01 Sony Corp Recording device, playback device, and disc medium
US8270267B2 (en) 2001-03-19 2012-09-18 Sony Corporation Method of, and apparatus for, recording address information to disc medium
US8565055B2 (en) 2001-03-19 2013-10-22 Sony Corporation Method of, and apparatus for, recording address information to disc medium
USRE43458E1 (en) 2003-11-10 2012-06-12 Cleland James M Table top refrigerated beverage dispenser

Also Published As

Publication number Publication date
KR910005241A (en) 1991-03-30
JP2785368B2 (en) 1998-08-13

Similar Documents

Publication Publication Date Title
US5148422A (en) Optical recording medium having a data recording track with offset data storing regions
KR0178763B1 (en) Optical recording medium and information recording and reproducing apparatus
EP0414516B1 (en) Optical recording medium
EP0278006A1 (en) A disc device and a disc-like recording medium
KR20010007191A (en) Optical disc recording method and apparatus, optical disc, and optical disc reproducing apparatus
JP2785368B2 (en) Disk-shaped recording medium, method of reproducing and recording disk-shaped recording medium
KR0167766B1 (en) Method of information recording and reproducing for optical disc
JPH03237631A (en) Recording medium
JP2785369B2 (en) Disk-shaped recording medium
US20030012110A1 (en) Optical disk, optical disk playback apparatus, and optical disk playback method, optical disk recording apparatus and optical disk recording method, and recording medium
JP2830228B2 (en) Tracking method
JP2745712B2 (en) Signal recording method and signal reproducing method
JP2743507B2 (en) Recording medium and signal reproducing device
JP2745713B2 (en) Information recording method, information reproducing method and recording medium
JP2953711B2 (en) Optical disc recording method and reproducing method thereof
JP2743545B2 (en) recoding media
JP2907779B2 (en) recoding media
JPH03119520A (en) Signal recording method
JP2551398B2 (en) Playback device
JPH0223554A (en) Magneto-optical disk and recording and reproducing system using thereof
JPH03237657A (en) Data recording track
JPH0388125A (en) Recording medium, information recording and reproducing method
JPH04259914A (en) Optical information recording and reproducing device
JPS6212956A (en) Recording device for disc-shaped recording medium

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090529

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100529

Year of fee payment: 12

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100529

Year of fee payment: 12