JPS60127546A - Retrieving method of two-dimensional data - Google Patents

Retrieving method of two-dimensional data

Info

Publication number
JPS60127546A
JPS60127546A JP23587083A JP23587083A JPS60127546A JP S60127546 A JPS60127546 A JP S60127546A JP 23587083 A JP23587083 A JP 23587083A JP 23587083 A JP23587083 A JP 23587083A JP S60127546 A JPS60127546 A JP S60127546A
Authority
JP
Japan
Prior art keywords
optical
magneto
laser light
disc
transducer
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
Application number
JP23587083A
Other languages
Japanese (ja)
Inventor
Akihisa Kurokawa
黒川　彰久
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP23587083A priority Critical patent/JPS60127546A/en
Publication of JPS60127546A publication Critical patent/JPS60127546A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • G11B7/08552—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using electro-optical elements

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE:To simplify the structure and to make two-dimensional retrieval possible by providing an optical deflecting device in the optical path of a laser light when the laser light is irradiated to a photomagnetic disc to record and reproduce information. CONSTITUTION:In case of recording, a deflecting beam splitter 35 polarizes the laser light from a lens system 33 and irradiates it to a point A of a photomagnetic disc 1 through a condenser lens 36, and an optical deflecting device 2 is provided in the optical path between the lens 36 and the disc 1. The device 2 consists of a glass polarizer 21, a transducer 22, and a high frequency generator 23, and the transducer 22 converts the output of the generator 23 to an ultrasonic wave, and the quantity of ultrasonic wave is changed in accordance with the output of the generator 23. Consequently, the polarizer 21 deflects the laser light, which passes the inside of the polarizer 21, in the radial direction of the disc 1 in accordance with the quantity of ultrasonic wave of the transducer 22, thus performing two-dimensional access.

Description

【発明の詳細な説明】 （ａｌ　発明の技術分野 本発明は光磁気ディスク装置に於ける検索方法に係り、
特に検索のアクセスを二次元的に行う二次元データの検
索方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a search method in a magneto-optical disk device,
In particular, the present invention relates to a two-dimensional data search method that performs search access two-dimensionally.

（ｂｌ　従来技術と問題点 電子計算機システムに磁気記憶装置が盛んに用いられて
おり、効果を発揮している。しかしながら記憶量の増大
と共に此の磁気記憶を光ビームを用いて行うといった光
磁気デスクが用いられるｊＥに至った。然しなから、此
の光磁気ディスクに対する記録再生は一次元的に磁化を
光磁気ディスク上に行うことから、複数のブロック或い
は、複数トランクに跨ったデータを処理する場合に処理
に時間がかかり、処理速度を阻害すると言った欠点があ
った。此の欠点に対処する為に電磁ソレノイドを用いて
光磁気ディスク或いは光ヒーノ、照射機構をディスクの
半径方向に移動することに依って二次元検索を行うごと
が行われている。然しなから、此の方式は機械構造が複
雑であり、結果として高価なものとなる欠点があった。(bl) Prior Art and Problems Magnetic storage devices are widely used in electronic computer systems and are proving effective. However, as the amount of storage increases, magneto-optical disks that perform magnetic storage using light beams However, since recording and reproducing on this magneto-optical disk involves magnetizing the disk one-dimensionally, it is difficult to process data that spans multiple blocks or multiple trunks. In order to overcome this problem, an electromagnetic solenoid was used to move the magneto-optical disk, optical heater, and irradiation mechanism in the radial direction of the disk. However, this method has the disadvantage that the mechanical structure is complicated and the result is expensive.

（Ｃ１発明の目的 以上、従来の欠点に鑑み本発明は、安価な装作費にで光
磁気ディスクの二次元検索の行える二次元データの検索
方法を提供することを目的とするものである。(C1 Objectives of the Invention In view of the conventional drawbacks, the present invention aims to provide a two-dimensional data retrieval method that allows two-dimensional retrieval of a magneto-optical disk at low cost.

（ｄｌ　発明の構成 簡単に述べると本発明は、光磁気ディスクにレーザ光を
照射して前記光磁気ディスクの情報を記録再生する際の
アクセス検索に、前記レーザ光の光路に光偏向装置を備
えて、該光偏向装置を作動して前記アクセスを二次元的
に行うことを特徴とするものである。(dl Structure of the Invention Briefly stated, the present invention provides an optical deflection device in the optical path of the laser beam for access search when recording and reproducing information on the magneto-optical disk by irradiating a laser beam onto the magneto-optical disk. The access is performed two-dimensionally by operating the optical deflection device.

（ｅ）　発明の実施例 以下本発明の実施例を図に依って詳細に説明する。(e) Examples of the invention Embodiments of the present invention will be described in detail below with reference to the drawings.

図は本発明を説明する為の一実施例の要部ブロック図で
ある。The figure is a block diagram of essential parts of an embodiment for explaining the present invention.

図に於いて、１は光磁気ディスク、２は光偏向装置、３
は光ヘツド部をそれぞれ示す。In the figure, 1 is a magneto-optical disk, 2 is an optical deflection device, and 3 is a magneto-optical disk.
indicate the optical head portions, respectively.

レーザ光は光ヘツド部３から光磁気ディスク１に照射さ
れ、照射された光デイスク個所に情報が記録或いは読み
取りが行われる。光ヘツド部３は記録用半導体レーザ３
１と消去用半導体レーザ３２とからの光をレンズ系３３
と３４とで並行光線として、偏向ビームスプリンタ３５
に入射する。偏向ビームスプリッタ３５はレーザ光を例
えば記録の場合にレンズ系３３からのレーザ光を偏向し
て集光レンズ３６を介して、光磁気ディスクｌのＡ点を
照射する。The laser beam is irradiated onto the magneto-optical disk 1 from the optical head section 3, and information is recorded or read at the irradiated location on the optical disk. The optical head section 3 includes a recording semiconductor laser 3
1 and the erasing semiconductor laser 32 into a lens system 33.
and 34 as parallel rays, a deflection beam splinter 35
incident on . The deflection beam splitter 35 deflects a laser beam, for example, from a lens system 33 in the case of recording, and irradiates it to a point A of the magneto-optical disk l via a condenser lens 36.

此の照射に依ってＡ点はレーザ光に依って記録されるこ
ととなる以上の工程中の集光レンズ３６と光磁気ディス
ク１との光路に光偏向袋Ｗ２を設けである。此の光偏向
装置２は硝子偏向子２１と変換子２２と高周波発生器２
３とから構成されている。変換子２２は高周波発生器２
３の出方を超音波に変換する機能を持って居る。従って
高周波発生器２３の出方に応じて超音波量は変化するこ
ととなる。偏向子２２の超音波量に依って硝子偏向子２
１は内部を通過するレーザ光を光磁気ディスク１の半径
方向に偏向させる。即ち二次元アクセスを行うこととな
る。By this irradiation, point A is recorded by laser light. During the above process, an optical deflection bag W2 is provided in the optical path between the condenser lens 36 and the magneto-optical disk 1. This optical deflection device 2 includes a glass deflector 21, a converter 22, and a high frequency generator 2.
It is composed of 3. The converter 22 is a high frequency generator 2
It has the function of converting the output of 3 into ultrasonic waves. Therefore, the amount of ultrasonic waves changes depending on the direction of output from the high frequency generator 23. The glass deflector 2 depends on the amount of ultrasonic waves of the deflector 22.
1 deflects the laser beam passing through the inside in the radial direction of the magneto-optical disk 1. In other words, two-dimensional access is performed.

記録されたＡ点にて反射されたレーザ光は上記した光路
と逆方向に反射されレンズ３７を介して光検出器３８に
至り、記録状態が読み取られることとなる。The laser beam reflected at the recorded point A is reflected in the opposite direction to the optical path described above and reaches the photodetector 38 via the lens 37, where the recorded state is read.

（ｆ）　発明の効果 以上、詳細に説明したように本発明の二次元データの検
索方法は、容易に入手出来る光偏向装置を用いることに
依って安価に製作ができるものとなり、光磁気ディスク
を取り扱う上で利点の多いものとなる。(f) Effects of the Invention As explained in detail above, the two-dimensional data retrieval method of the present invention can be manufactured at low cost by using an easily available optical deflection device, and can be manufactured easily using magneto-optical disks. It has many advantages in handling.

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

図は本発明を説明する為の一実施例の要部ブロック図で
ある。 図に於いて、１は光磁気ディスク、２は光偏向装置、３
は光ヘツド部をそれぞれ示す。The figure is a block diagram of essential parts of an embodiment for explaining the present invention. In the figure, 1 is a magneto-optical disk, 2 is an optical deflection device, and 3 is a magneto-optical disk.
indicate the optical head portions, respectively.

Claims (1)

【特許請求の範囲】[Claims] 光磁気ディスクにレーザ光を照射して前記光磁気ディス
クの情報を記録再生する際のアクセス検索に、前記レー
ザ光の光路に光偏向装置を備えて、該光偏向装置を作動
して前記アクセスを二次元的に行うことを特徴とする二
次元データの検索方法。For access search when recording and reproducing information on the magneto-optical disk by irradiating the magneto-optical disk with a laser beam, an optical deflection device is provided in the optical path of the laser beam, and the optical deflection device is operated to perform the access search. A two-dimensional data retrieval method characterized in that it is performed two-dimensionally.
JP23587083A 1983-12-13 1983-12-13 Retrieving method of two-dimensional data Pending JPS60127546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23587083A JPS60127546A (en) 1983-12-13 1983-12-13 Retrieving method of two-dimensional data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23587083A JPS60127546A (en) 1983-12-13 1983-12-13 Retrieving method of two-dimensional data

Publications (1)

Publication Number Publication Date
JPS60127546A true JPS60127546A (en) 1985-07-08

Family

ID=16992463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23587083A Pending JPS60127546A (en) 1983-12-13 1983-12-13 Retrieving method of two-dimensional data

Country Status (1)

Country Link
JP (1) JPS60127546A (en)

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