JPS61198430A - Optical information recording device - Google Patents
Optical information recording deviceInfo
- Publication number
- JPS61198430A JPS61198430A JP3740385A JP3740385A JPS61198430A JP S61198430 A JPS61198430 A JP S61198430A JP 3740385 A JP3740385 A JP 3740385A JP 3740385 A JP3740385 A JP 3740385A JP S61198430 A JPS61198430 A JP S61198430A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- recording medium
- envelope
- sector
- information
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光学式情報記録装置に関し、特に記録媒体への
記録エラーに対する対処手段をもつ光学式情報記録装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical information recording device, and more particularly to an optical information recording device having means for dealing with recording errors on a recording medium.
光学式情報記録の１つの方式として光磁気記録がある。 Magneto-optical recording is one method of optical information recording.
光磁気記録においては、ガラス基板上にＴｂ 、 Ｇｄ
、 Ｆ＠等の合金からなる強磁性体薄膜を形成し該薄
膜上に保護層を形成してなる記録媒体（たとえばディス
ク状の媒体）の磁性体薄膜の磁化の方向を予め全体的に
同一の向きにそろえておき、該記録媒体に対し上記磁化
の向きと逆向きのバイアス磁場をかけた状態で記録情報
信号で変調されたレーザ光ビーム照射を行ない、これに
より形成されるビームスポットを媒体上で所定の経路に
従って走査せしめることにより記録媒体に記録情報信号
に対応した磁化反転による情報ピット列からなる情報ト
ラックが形成される。In magneto-optical recording, Tb and Gd are deposited on a glass substrate.
In a recording medium (for example, a disk-shaped medium) in which a ferromagnetic thin film made of an alloy such as F@ is formed and a protective layer is formed on the thin film, the direction of magnetization of the magnetic thin film is set in advance to be the same throughout. A laser beam modulated by a recording information signal is irradiated with a bias magnetic field applied to the recording medium in the opposite direction to the magnetization direction, and a beam spot formed thereby is placed on the medium. By scanning the recording medium along a predetermined path, an information track consisting of a string of information pits due to magnetization reversal corresponding to the recording information signal is formed on the recording medium.
この様な光磁気記録方式は記録媒体に対し随時情報の記
録、再生及び消去を行なうことができるという特長を有
する。Such a magneto-optical recording system has the advantage that information can be recorded, reproduced, and erased on a recording medium at any time.
しかして、上記の様な記録方式において、記碌媒体にキ
ズ等の損傷が生じた様な場合には該損傷部分に記録する
ことが不可能となシ、当該部分に記録されるべきであっ
た情報は記録エラーとなる。However, in the above-mentioned recording method, if there is damage such as scratches on the recording medium, it is impossible to record on the damaged area, and it is necessary to record on the damaged area. This information will result in a recording error.
そこで、従来の光磁気記録装置においては上記の様な記
録エラーの検出のため、一旦記録媒体全体に記録を行な
った後に該記録媒体の記録情報を全体的に再生すること
が行なわれている。そして、記録エラーとなった信号は
改めて他の部分に記録するのである。Therefore, in conventional magneto-optical recording apparatuses, in order to detect the above-mentioned recording errors, recording is performed on the entire recording medium and then the recorded information on the recording medium is reproduced in its entirety. Then, the signal that caused the recording error is recorded again in another part.
しかしながら、この様な記録エラー検出では情報信号全
部を記録媒体に記録する（あるいは情報信号全部が記録
媒体に記録されたことを確認する）までに本来の記録時
間の２倍以上の時間が必要となり、極めて効率が悪い。However, in this type of recording error detection, it takes more than twice the original recording time to record all the information signals on the recording medium (or to confirm that all the information signals have been recorded on the recording medium). , extremely inefficient.
以上の如き問題は光磁気記録方式に限らず、他の方式を
含む全ての光学式情報記録での記録時において生ずる。The above problems occur not only in the magneto-optical recording method but also in all optical information recording methods including other methods.
本発明によれば１以上の如き従来技術の問題点を解決す
るものとして、情報記録時に記録媒体からの反射光を検
出する手段と該検出手段の出力から反射光異常を検出す
るための手段とを有することを特徴とする。光学式情報
記録装置が提供てれる。According to the present invention, in order to solve one or more problems of the prior art, there are provided a means for detecting reflected light from a recording medium during information recording, and a means for detecting an abnormality in reflected light from the output of the detecting means. It is characterized by having the following. An optical information recording device is provided.
以下、図面を参照しながら本発明の具体的実施例を説明
する。Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
第１図は本発明による光学式情報記録装置の一実施例を
示す概略構成図である。FIG. 1 is a schematic diagram showing an embodiment of an optical information recording device according to the present invention.
図において、１はレーデ光源であフ、２はコリメータレ
ンズであシ、３は偏光ビームスプリッタであり、４は１
／４波長板であシ、５は対物レンズであシ、６は集束レ
ンズであシ、７は光検出器である。また、８は光磁気記
録媒体である光ディスクである。In the figure, 1 is a Rede light source, 2 is a collimator lens, 3 is a polarizing beam splitter, and 4 is 1
5 is an objective lens, 6 is a focusing lens, and 7 is a photodetector. Further, 8 is an optical disk which is a magneto-optical recording medium.
記録情報信号は、記録装置と接続された外部装置（コン
ピュータ、イメージリーダ等）から送られてくる。記録
情報信号は一旦半導体記憶素子（ＲＡＭ） １０に蓄え
られる。そして、制御部１１からの指令によフ、情報信
号は情報単位毎に信号処理部１２へと送られる。処理部
１２において適宜の形に処理部れた信号は変調部１３で
変調され、レーザ光源ｌへと送られる。レーデ光源１は
変調部１３から送られてきた変調信号によ〕直接変調さ
れ情報信号に対応する強度の光ビームを発射するにの光
ビームはコリメータレンズ２により平行光とされ、偏光
ビームスプリッタ３を通過し、１／４波長板４により円
偏光とされた後に、対物レンズ５により集束せしめられ
、記録媒体８上に微小スポットとして照射せしめられる
。かくして、記録媒体８に情報が記録される。The recording information signal is sent from an external device (computer, image reader, etc.) connected to the recording device. The recording information signal is temporarily stored in a semiconductor memory element (RAM) 10. Then, according to a command from the control section 11, the information signal is sent to the signal processing section 12 in units of information. The signal processed in an appropriate form in the processing section 12 is modulated in the modulation section 13 and sent to the laser light source l. The Rade light source 1 is directly modulated by the modulation signal sent from the modulation section 13 and emits a light beam with an intensity corresponding to the information signal.The light beam is collimated by the collimator lens 2 and then sent to the polarizing beam splitter 3. After passing through the 1/4 wavelength plate 4 and being made into circularly polarized light, the light is focused by the objective lens 5 and irradiated onto the recording medium 8 as a minute spot. In this way, information is recorded on the recording medium 8.
記録媒体８に照射された光は数十パーセントが反射せし
められる。この反射光は対物レンズ５により平行光とさ
れた後に１／４波長板４を通過し、偏光ビームスグリツ
タ３により光路を９０度曲げられて、集束レンズ６によ
り光検出器７上に集束せしめられる。光検出器７に入射
する光は情報信号により変調されたレーデ光の反射光で
あるため強度は一定ではない。しかし、一般に情報信号
により変調されたレーデ光はそれ程大きな強度差をもつ
ことはなく、必要最小限の強度差である。このため、光
検出器７の出力のエンベロープはかな〕狭い範囲におい
て変化する。光検出器７の出力はエンベロープ異常検出
部１４へと入力せしめられ、ここで上記の通常のエンベ
ローブ変動範囲を越えて急激に異常に大きくなるかある
いは急激に異常に小さくなるエンベローブ信号を検出す
る。Several tens of percent of the light irradiated onto the recording medium 8 is reflected. This reflected light is made into parallel light by the objective lens 5, passes through the 1/4 wavelength plate 4, has its optical path bent by 90 degrees by the polarizing beam sinter 3, and is focused onto the photodetector 7 by the focusing lens 6. It will be done. Since the light incident on the photodetector 7 is reflected light of the Radhe light modulated by the information signal, its intensity is not constant. However, in general, Radhe light modulated by an information signal does not have such a large intensity difference, but is the minimum necessary intensity difference. Therefore, the envelope of the output of the photodetector 7 changes within a narrow range. The output of the photodetector 7 is input to an envelope abnormality detection section 14, which detects an envelope signal that suddenly becomes abnormally large or suddenly abnormally small beyond the above-mentioned normal envelope fluctuation range.
かくして、記録媒体８の損傷等により該媒体８からの反
射率が大幅に変わった様な場合にはエンペａ−グ信号異
常が検出されるので、その記録媒体記録領域は記録不可
能である（パッドセクター）と判断し、制御部１１に信
号を送る。制御部１１において異常検出部１４からの信
号入力があった場合にはパッドセクターの次のセクター
に記憶素子１０に記憶されている同一情報（即ち、パッ
ドセクターに記録を試みた情報）を再度同一手順にて記
録する。Thus, if the reflectance from the medium 8 has changed significantly due to damage to the recording medium 8, an abnormality in the empa signal will be detected, and the recording area of the recording medium will be unrecordable ( pad sector) and sends a signal to the control unit 11. When the control unit 11 receives a signal input from the abnormality detection unit 14, the same information stored in the storage element 10 (that is, the information attempted to be recorded in the pad sector) is transferred to the next sector of the pad sector. Record according to the procedure.
以上、光磁気記録装置に関し具体的に説明したが、本発
明はその他の光学式情報記録装置にも同様に適用するこ
とができる。Although the magneto-optical recording device has been specifically explained above, the present invention can be similarly applied to other optical information recording devices.
以上の如き本発明によれば、記録媒体への情報記録時に
同時に記録エラーを検出できるので、直ちに他の記録領
域に上記エラーとなりた記録情報を記録することができ
、従って必要最小限の時間で記録媒体への記録を完了す
ることができる。According to the present invention as described above, since a recording error can be detected at the same time when recording information on a recording medium, it is possible to immediately record the recorded information in which the error occurred in another recording area, and therefore in the minimum necessary time. Recording to the recording medium can be completed.
第１図は本発明による光学式情報記録装置の概略構成図
である。
１・・・光源、７・・・光検出器、８・・・記録媒体。FIG. 1 is a schematic diagram of an optical information recording device according to the present invention. 1... Light source, 7... Photodetector, 8... Recording medium.
Claims (3)
報記録を行なう光学式情報記録装置において、情報記録
時に記録媒体からの反射光を検出する手段と該検出手段
の出力から反射光異常を検出するための手段とを有する
ことを特徴とする、光学式情報記録装置。(1) In an optical information recording device that records information on a recording medium by separating each information unit by light irradiation, there is a means for detecting the reflected light from the recording medium during information recording, and an abnormality in the reflected light is detected from the output of the detecting means. An optical information recording device, characterized in that it has means for detecting.
録すべきであった情報単位を次の記録領域に記録させる
制御手段を有する、特許請求の範囲第１項の光学式情報
記録装置。(2) The optical information recording device according to claim 1, comprising a control means for recording an information unit that should have been recorded in the recording area where the reflected light abnormality of the recording medium was detected in the next recording area. .
異常を検出するものである、特許請求の範囲第１項の光
学式情報記録装置。(3) The optical information recording device according to claim 1, wherein the reflected light abnormality detection means detects an abnormality in the envelope of the input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3740385A JPS61198430A (en) | 1985-02-28 | 1985-02-28 | Optical information recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3740385A JPS61198430A (en) | 1985-02-28 | 1985-02-28 | Optical information recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61198430A true JPS61198430A (en) | 1986-09-02 |
Family
ID=12496560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3740385A Pending JPS61198430A (en) | 1985-02-28 | 1985-02-28 | Optical information recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61198430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0260637A2 (en) * | 1986-09-16 | 1988-03-23 | Matsushita Electric Industrial Co., Ltd. | Optical information recording/reproducing apparatus |
| EP0594132A2 (en) * | 1992-10-23 | 1994-04-27 | Sony Corporation | Recording apparatus for an optical recording medium |
-
1985
- 1985-02-28 JP JP3740385A patent/JPS61198430A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0260637A2 (en) * | 1986-09-16 | 1988-03-23 | Matsushita Electric Industrial Co., Ltd. | Optical information recording/reproducing apparatus |
| EP0594132A2 (en) * | 1992-10-23 | 1994-04-27 | Sony Corporation | Recording apparatus for an optical recording medium |
| EP0594132A3 (en) * | 1992-10-23 | 1995-03-08 | Sony Corp | Recording apparatus for an optical recording medium. |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0089021B1 (en) | Overlay recording prevention device for optical disc apparatus | |
| JPH01311440A (en) | Magneto-optical information recording and reproducing device | |
| US4879703A (en) | Magneto-optic memory apparatus with defect detection of recording medium during erasing operation | |
| US4639907A (en) | Magneto-optical apparatus | |
| US5557601A (en) | Optical information recording/reproducing method and apparatus in which a first optical spot performs focusing, tracking, erasing and recording and a second optical spot performs two reproducing modes | |
| JP2001176108A (en) | Aberration correcting optical element and pickup device, information reproducing device and information recording device | |
| US4682316A (en) | Optical information processing apparatus for light beam focus detection and control | |
| JPS62236152A (en) | Optical pick-up | |
| JPS61198430A (en) | Optical information recording device | |
| JPH0362342A (en) | Optical head | |
| JPH0386955A (en) | Recording/erasing confirming method for magneto-optical recording system | |
| JPH01315040A (en) | Optical head device and information recording and reproducing system | |
| JP3081307B2 (en) | Optical information recording / reproducing method and device therefor | |
| JP2935554B2 (en) | Light head | |
| JPH0540963A (en) | Information recording medium and information recording and reproducing device used the same | |
| JPH02101675A (en) | Optical information processor | |
| EP0555037B1 (en) | Magneto-optical information recording/reproducing apparatus | |
| JP3066533B2 (en) | Optical information recording / reproducing device | |
| JPS6370930A (en) | Optical information recording and reproducing device | |
| JPH01191326A (en) | Optical information processor | |
| JPH03214448A (en) | Magneto-optical recording and reproducing device | |
| JPH06274890A (en) | Optical information recording and reproducing device | |
| JPS6326829A (en) | Information recorder | |
| JP2000195091A (en) | Optical head apparatus | |
| JPS59121638A (en) | Magneto-optical recording and reproducing device |