JPS5965948A - Recording and reproducing method - Google Patents
Recording and reproducing methodInfo
- Publication number
- JPS5965948A JPS5965948A JP57175934A JP17593482A JPS5965948A JP S5965948 A JPS5965948 A JP S5965948A JP 57175934 A JP57175934 A JP 57175934A JP 17593482 A JP17593482 A JP 17593482A JP S5965948 A JPS5965948 A JP S5965948A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- laser array
- reproducing
- information
- high speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/14—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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ビデオディスク、光磁気ディスク等の光学的
記録再生方法に係り、更に詳しくは、高速度のデータ転
送が可能な記録再生方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical recording and reproducing method for video discs, magneto-optical discs, etc., and more particularly to a recording and reproducing method that allows high-speed data transfer.
近年、磁気ヘッド等を用いた記録再生に代わって、感光
性記録媒体に光を照射することKよって、光学的に情報
を記録或いは再生する方法が、高記録密度、非接触等の
点から注目されている。このような記録再生方法の概略
を第1図に示す。In recent years, instead of recording and reproducing using magnetic heads, methods of optically recording or reproducing information by irradiating light onto a photosensitive recording medium have attracted attention due to its high recording density and non-contact nature. has been done. An outline of such a recording/reproducing method is shown in FIG.
第1図において、1杜半導体レーザ等の光源。In FIG. 1, a light source such as a 1-Mori semiconductor laser.
2社集光レンズ、6は感光性記録媒体、4は記録トラッ
クを示す。情報V、l記録信号として光源1に送られ、
該記録信号に基づいて変調された光を集光レンズ2によ
って感光性記録媒体3に集光し、該記録ρに体を回転さ
せるととKより記録トラック4として記録される。また
情報を読み出す際には、該感光性記録媒体6に光を照射
し、記録トラック4からの反射光を光電変換素子等で受
け、再生を行なうものである。2 company condensing lens, 6 is a photosensitive recording medium, and 4 is a recording track. Information V, l is sent to the light source 1 as a recording signal,
The light modulated based on the recording signal is focused on the photosensitive recording medium 3 by the condensing lens 2, and when the body is rotated to record ρ, it is recorded as a recording track 4 from K. Further, when reading information, the photosensitive recording medium 6 is irradiated with light, and the reflected light from the recording track 4 is received by a photoelectric conversion element or the like to perform reproduction.
しかしながら、上記の方法において、高速な記録再生を
行なう為に情報の転送速度を上げても、記録媒体の回転
速度或いは記録線密度等の限界があり、記録再生の高速
化は容易ではない。However, in the above method, even if the information transfer speed is increased in order to perform high-speed recording and reproduction, there are limitations such as the rotational speed of the recording medium or the recording linear density, and it is not easy to increase the speed of recording and reproduction.
本発明の目的L、前述の問題点を解決し、高速な記録再
生が可能な記録再生方法を提供することにある。A purpose L of the present invention is to provide a recording and reproducing method that solves the above-mentioned problems and enables high-speed recording and reproducing.
本発明は集積された複数の半導体レーザを、記録信号に
従って互いに独立に駆動し、情報を感光性記録媒体の複
数の記録トラックに同時に記録し、また、複数のトラッ
クに記録された該情報を集積された複数の光電変換素子
で同時に読み出す記録再生方法によって上記目的を達す
るものである0以下、図面を用いて本発明の詳細な説明
する。The present invention drives a plurality of integrated semiconductor lasers independently of each other according to a recording signal, simultaneously records information on a plurality of recording tracks of a photosensitive recording medium, and also integrates the information recorded on the plurality of tracks. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings, which achieves the above object by a recording and reproducing method that simultaneously reads data using a plurality of photoelectric conversion elements.
第2図(勾は本発明に基づく記録方法の一実施例を示す
4((I略図である。図中、11は半導体レーザアレイ
、12は集光レンズ、13tiW&光性記録媒体、14
は記録トラック群を示す。ここで、高速で転送されてき
た情報は、一旦6個のバッファメモリ(不図示)に分割
して記憶され、これらの分割された情報を低速で同時K
[み出し、これらの信号に基づいて、半導体レーザアレ
イ110個々のレーザを夫々、互いに独立に駆動する。FIG. 2 (the gradient indicates an embodiment of the recording method according to the present invention) is a schematic diagram.
indicates a recording track group. Here, the information transferred at high speed is once divided and stored in six buffer memories (not shown), and these divided information are simultaneously transferred at low speed.
[Based on these signals, the individual lasers in the semiconductor laser array 110 are driven independently of each other.
この半導体レーザアレイ11から射出した6本の光束を
、同一の集光レンズ12で集光し、感光性記録媒体16
の略半径方向に3個のビームスポットを形成する。この
時、感光性記録媒体16を回転させることにより記録ト
ラック群14が形成される。このように本発明の方法で
社、情報を複数のトラックに同時に記録することができ
る為、記録速度を大巾に向上させるものである。また本
実施例で鉱、半導体レーザアレイを用い、この個々の半
導体レーザの光学的投影像が記録トラック方向に一列に
ならぬ様、即ち記録トラックの方向に直角もしくは斜め
に投影することにより、記録媒体の半径方向に密接した
トラック群が形成できる。更に、複数のビームスポット
の形成に、同一の集光レンズを用いている為、オートフ
ォーカスサーボ機構等も一個ですみ、装置構成が簡単に
できるものである。The six beams emitted from the semiconductor laser array 11 are condensed by the same condensing lens 12, and
Three beam spots are formed approximately in the radial direction. At this time, the recording track group 14 is formed by rotating the photosensitive recording medium 16. As described above, the method of the present invention allows information to be recorded simultaneously on a plurality of tracks, thereby greatly increasing the recording speed. Furthermore, in this embodiment, a semiconductor laser array is used, and the optical projection images of the individual semiconductor lasers are not aligned in the direction of the recording track, that is, they are projected at right angles or obliquely to the direction of the recording track. Track groups closely spaced in the radial direction of the medium can be formed. Furthermore, since the same condensing lens is used to form a plurality of beam spots, only one autofocus servo mechanism is required, which simplifies the device configuration.
第2図(B)は、第2図(勾の如く記録された情報の再
生方法を説明する概略図である。図中、16は感光性記
録媒体、14は記録トラック群、20は光源、21は光
電変換素子アレイ、22は集光レンズである。ここで、
光電変換素子アレイ21U、第2図(8の半導体レーザ
アレイ11の位置、又は、とれと等価な位置に配置され
、光源20によって照明された記録トラック群14から
の反射光を受け、複数の記録トラックに分割して記録さ
れた情報を互いに独立に、同時に複数の電気信号として
読み出すものである。この複数の信号社6個のバッファ
メモリ(不図示)K一旦記憶され、これを順に高速で読
み出し、情報を再生するものである〇尚、前述の実施例
では、半導体レーザアレイ或いは光電変換素子アレイ中
の素子数が3個の場合を示したが、この数VJ、記録再
生速度の要求によって、任意に選択できることれいりま
でもない0また感光性記録媒体をディスク状としたが、
本発明はこれに限らず、テープ状の記録媒体等、その他
の記録媒体にも適用が可能である。更に、光源、集光レ
ンズ等の構成も、本発明の特許請求の範囲を逸脱しない
範囲で、種々の変形が可能である。FIG. 2(B) is a schematic diagram illustrating a method for reproducing information recorded as shown in FIG. 21 is a photoelectric conversion element array, and 22 is a condensing lens. Here,
The photoelectric conversion element array 21U is arranged at the position of the semiconductor laser array 11 in FIG. The information recorded in the divided tracks is read out simultaneously as multiple electrical signals independently of each other.Once stored in six buffer memories (not shown) K of these multiple signals, they are read out in sequence at high speed. , information is reproduced. In the above embodiment, the number of elements in the semiconductor laser array or the photoelectric conversion element array is three, but depending on this number VJ and the recording/reproducing speed requirements, 0Also, the photosensitive recording medium is in the form of a disk,
The present invention is not limited to this, and can be applied to other recording media such as tape-shaped recording media. Furthermore, the configurations of the light source, condensing lens, etc. can be modified in various ways without departing from the scope of the claims of the present invention.
例えば再生時の光源を、光電変換素子アレイに対応する
半導体レーザアレイとして、個々の記録トラックを別個
に照明するように構成してもかまわない。For example, the light source during reproduction may be a semiconductor laser array corresponding to the photoelectric conversion element array, and may be configured to separately illuminate each recording track.
以上説明したように、本発明は、従来の記録再生方法に
おいて、半導体レーザアレイ及び光、電変換素子アレイ
を用いて、複数の記録トラックに同時に記録及び再生を
行なう事によって、実効的に高速な記録再生を可能にす
るものである。As explained above, the present invention effectively achieves high-speed recording and reproduction by simultaneously recording and reproducing information on a plurality of recording tracks using a semiconductor laser array and an optical/electric conversion element array in a conventional recording/reproducing method. It enables recording and playback.
第1図は従来の記録再生方法を説明する概略図、第2図
(lq + h+ 2図(均は夫々本発明の記録再生方
法の一実施例を説明する概略図である。
11・・・・・半棉体レーザアレイ
12.22・・・・・集光レンズ
16・・・・・感光性記録媒体
14・・・・・記録トラック群
20・・・・・光源
21・・・・・光電変換素子アレイ
出願人 キャノン株式会社FIG. 1 is a schematic diagram for explaining a conventional recording/reproducing method, and FIG. 2 is a schematic diagram for explaining an embodiment of the recording/reproducing method of the present invention. 11... ...Half-cotton laser array 12.22...Condensing lens 16...Photosensitive recording medium 14...Recording track group 20...Light source 21... Photoelectric conversion element array applicant Canon Corporation
Claims (1)
って互いに独立に駆動し、情報を感光性記録媒体の複数
の記録トラックに同時に記録し、また、複数のトラック
に記録された該情報を、集積された複数の光電変換素子
で同時に読み出す記録再生方法。(1) A plurality of integrated semiconductor lasers are driven independently of each other according to a recording signal, information is simultaneously recorded on a plurality of recording tracks of a photosensitive recording medium, and the information recorded on the plurality of tracks is A recording and reproducing method that reads data simultaneously using multiple integrated photoelectric conversion elements.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57175934A JPS5965948A (en) | 1982-10-06 | 1982-10-06 | Recording and reproducing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57175934A JPS5965948A (en) | 1982-10-06 | 1982-10-06 | Recording and reproducing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5965948A true JPS5965948A (en) | 1984-04-14 |
Family
ID=16004803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57175934A Pending JPS5965948A (en) | 1982-10-06 | 1982-10-06 | Recording and reproducing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5965948A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60179945A (en) * | 1984-02-25 | 1985-09-13 | Sony Corp | Reproduction system of optical disk |
JPS63273228A (en) * | 1987-04-30 | 1988-11-10 | Sony Corp | Optical recording information reproducing device |
JPS6488932A (en) * | 1987-09-29 | 1989-04-03 | Sony Corp | Recording and reproducing device |
EP0316959A2 (en) * | 1987-11-20 | 1989-05-24 | Nippon Conlux Co., Ltd. | Optical information reproducing apparatus |
EP0336328A2 (en) * | 1988-04-04 | 1989-10-11 | Nippon Conlux Co., Ltd. | Apparatus for optically recording and reproducing information |
JPH0393049A (en) * | 1989-09-05 | 1991-04-18 | Victor Co Of Japan Ltd | Multibeam optical reproducing device |
US5359588A (en) * | 1992-02-12 | 1994-10-25 | Mitsubishi Denki Kabushiki Kaisha | Optical recording/reproducing apparatus |
-
1982
- 1982-10-06 JP JP57175934A patent/JPS5965948A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60179945A (en) * | 1984-02-25 | 1985-09-13 | Sony Corp | Reproduction system of optical disk |
JPS63273228A (en) * | 1987-04-30 | 1988-11-10 | Sony Corp | Optical recording information reproducing device |
JPS6488932A (en) * | 1987-09-29 | 1989-04-03 | Sony Corp | Recording and reproducing device |
EP0316959A2 (en) * | 1987-11-20 | 1989-05-24 | Nippon Conlux Co., Ltd. | Optical information reproducing apparatus |
EP0316959B1 (en) * | 1987-11-20 | 1995-08-02 | Nippon Conlux Co., Ltd. | Optical information reproducing apparatus |
EP0336328A2 (en) * | 1988-04-04 | 1989-10-11 | Nippon Conlux Co., Ltd. | Apparatus for optically recording and reproducing information |
JPH0393049A (en) * | 1989-09-05 | 1991-04-18 | Victor Co Of Japan Ltd | Multibeam optical reproducing device |
US5359588A (en) * | 1992-02-12 | 1994-10-25 | Mitsubishi Denki Kabushiki Kaisha | Optical recording/reproducing apparatus |
US5469423A (en) * | 1992-02-12 | 1995-11-21 | Mitsubishi Kenki Kabushiki Kaisha | Laser power control of an optical head with a plurality of beam sources |
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