JPH07249268A - Information recording and reproducing device - Google Patents

Information recording and reproducing device

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Publication number
JPH07249268A
JPH07249268A JP6038797A JP3879794A JPH07249268A JP H07249268 A JPH07249268 A JP H07249268A JP 6038797 A JP6038797 A JP 6038797A JP 3879794 A JP3879794 A JP 3879794A JP H07249268 A JPH07249268 A JP H07249268A
Authority
JP
Japan
Prior art keywords
recording
signal
reproducing
information
clock signal
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
JP6038797A
Other languages
Japanese (ja)
Inventor
Minoru Takizawa
実 瀧沢
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.)
Nikon Corp
Original Assignee
Nikon 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 Nikon Corp filed Critical Nikon Corp
Priority to JP6038797A priority Critical patent/JPH07249268A/en
Publication of JPH07249268A publication Critical patent/JPH07249268A/en
Pending legal-status Critical Current

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  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To surely set recording or reproducing frequency at the time of movement of a track by modulating signal based on clock signal and recording information at the time of recording, and converting reflected light of a light beam into an electric signal at the time of reproducing and demodulating the signal based on a clock signal. CONSTITUTION:In a head 5, an information signal to be recorded is modulated based on a clock signal from a clock signal switching circuit 10 at the time of recording, and information is record in an optical disk 1 by controlling a light beam 6. On the other hand, at the time of reproducing, reflected light of the light beam 6 with which a recording surface is irradiated, is converted into an electric signal, the signal is demodulated based on a clock signal from the clock switching circuit 10, and a reproduced signal is outputted. This reproduced signal is inputted to a signal processing circuit 9, the circuit 9 recognizes the present position of a head by reading the number of a track out of the reproduced signal, and outputs information to circuits 7, 10. Then, a setting circuit 7 outputs a control signal moving a positioner 4 to an original point position, and sends a clock signal to the circuit 10.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、いわゆるMCAV方式
でディスク状情報記録担体に対して情報の記録あるいは
再生を行う情報記録再生装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording / reproducing information on / from a disc-shaped information recording carrier by a so-called MCAV system.

【0002】[0002]

【従来の技術】光ディスク等のディスク状情報記録担体
は、情報記録トラックが同心円状あるいはスパイラル状
に設けられており、各トラックを複数のセクタに分割
し、このセクタを情報の記録あるいは再生を行う単位と
している。光ディスクの場合、光ヘッドから照射される
光ビームを記録トラック上に追従させることによって情
報の記録あるいは再生を行う。
2. Description of the Related Art In a disc-shaped information record carrier such as an optical disc, information recording tracks are provided concentrically or spirally, each track is divided into a plurality of sectors, and this sector is used for recording or reproducing information. The unit is used. In the case of an optical disc, information is recorded or reproduced by causing a light beam emitted from an optical head to follow a recording track.

【0003】たとえば光ディスクに、データを記録する
フォーマットとしては、種々のものが提案されている。
代表的なものに、CAV方式があるが、CAV方式を改
良したものとしてMCAV方式がある。MCAV方式で
はディスクを一定の回転速度で回転させ、ディスクの外
側の記録トラックへいくほど高い周波数で記録を行う。
For example, various formats have been proposed as a format for recording data on an optical disc.
A typical example is the CAV method, and the MCAV method is an improved version of the CAV method. In the MCAV system, a disc is rotated at a constant rotation speed, and recording is performed at a higher frequency as it goes to a recording track outside the disc.

【0004】さらに具体的に説明すれば、ディスクの記
録トラックを回転半径方向に複数のゾーンに分割する。
各ゾーンには複数の記録トラックが含まれる。そして、
各ゾーンごとに記録あるいは再生周波数を異ならせて
(外側のゾーンほど周波数を高くして)、情報の記録あ
るいは再生を行う。情報の記録あるいは再生を行う前に
光ビームを原点ゾーンに移動させて、そのゾーンに対応
した記録あるいは再生周波数の設定を行う。
More specifically, the recording track of the disk is divided into a plurality of zones in the radial direction of rotation.
Each zone includes a plurality of recording tracks. And
Information is recorded or reproduced by changing the recording or reproducing frequency for each zone (increasing the frequency in the outer zones). Before recording or reproducing information, the light beam is moved to the origin zone and the recording or reproducing frequency corresponding to the zone is set.

【0005】[0005]

【発明が解決しようとする課題】情報記録再生装置を立
ち上げたとき(例えば、電源をオンにしたとき、あるい
は、一度記録または再生動作を停止した後再び始めると
き等)、光ビームの現在位置がわからないので、立ち上
げ時に光ビームを所定の位置(所定のゾーンあるいは所
定のトラック)に移動させて、その所定の位置に対応す
る記録あるいは再生周波数(予めわかっている)で、記
録あるいは再生を行ってみるのである。
When the information recording / reproducing apparatus is started up (for example, when the power is turned on, or when the recording or reproducing operation is once stopped and then restarted), the current position of the light beam. I don't know, so I moved the light beam to a predetermined position (a predetermined zone or a predetermined track) at the time of start-up, and recorded or reproduced at the recording or reproduction frequency (known in advance) corresponding to the predetermined position. I will go.

【0006】光ビームを情報の記録あるいは再生を行え
るように、所定の位置であるゾーン(原点ゾーン)に移
動させ、そのゾーンに対応した記録あるいは再生周波数
の設定を行うとき、その移動誤差により、所望のゾーン
(原点ゾーン)に移動できず、設定される周波数が移動
したゾーンでの本来設定されるべき周波数と異なってし
まうことがある。
When a light beam is moved to a zone (origin zone) which is a predetermined position so that information can be recorded or reproduced and a recording or reproduction frequency corresponding to the zone is set, the movement error causes It may not be possible to move to a desired zone (origin zone), and the set frequency may be different from the originally set frequency in the moved zone.

【0007】本発明は、MCAV方式の特徴を生かしつ
つ、記録あるいは再生周波数の設定が正確に行える情報
記録再生装置を提供することを目的とする。
An object of the present invention is to provide an information recording / reproducing apparatus capable of accurately setting a recording or reproducing frequency while taking advantage of the characteristics of the MCAV system.

【0008】[0008]

【課題を解決するための手段】上記課題を解決するため
本発明においては、ディスク状情報記録担体を半径方向
に複数のゾーンに分割し、記録あるいは再生をすべきゾ
ーンに応じた記録周波数あるいは再生周波数のクロック
信号を発生する信号発生手段と、前記クロック信号に基
づいて、前記記録担体に対して情報の記録あるいは再生
を行う記録再生手段と、前記記録再生手段を記録あるい
は再生していない時に固定する固定手段と、前記固定手
段で固定された位置を示す情報を格納する記憶手段を有
し、前記信号発生手段は、再度記録あるいは再生を行う
場合、前記記憶手段に格納されている情報に基づいた記
録周波数あるいは再生周波数のクロック信号を発生する
構成とした。
In order to solve the above-mentioned problems, in the present invention, a disc-shaped information record carrier is divided into a plurality of zones in the radial direction, and a recording frequency or reproduction depending on the zone to be recorded or reproduced. A signal generating means for generating a clock signal of a frequency, a recording / reproducing means for recording or reproducing information on the record carrier based on the clock signal, and a fixed time when the recording / reproducing means is not recording or reproducing. Fixing means and storage means for storing information indicating the position fixed by the fixing means, and the signal generating means is based on the information stored in the storage means when recording or reproducing again. A clock signal having a recording frequency or a reproducing frequency is generated.

【0009】[0009]

【作用】光ビームを情報の記録あるいは再生を行えるよ
うにするとき、記録再生手段を固定する固定手段を解除
し、記憶手段に格納されている情報に基づいた記録周波
数あるいは再生周波数を設定することにより記録再生周
波数の設定が確実に行える。
When the light beam is used for recording or reproducing information, the fixing means for fixing the recording and reproducing means is released and the recording frequency or reproducing frequency is set based on the information stored in the storage means. With this, the recording / reproducing frequency can be reliably set.

【0010】また、記録再生手段を記録あるいは再生し
ていない時に固定手段により固定し、固定手段で固定さ
れた位置を示す情報を記憶手段に格納することにより、
次に情報の記録あるいは再生を行うときに記録再生周波
数の設定が確実に行える。
Further, by fixing the recording / reproducing means by the fixing means when not recording or reproducing, and storing the information indicating the position fixed by the fixing means in the storage means,
Next, when recording or reproducing information, the recording / reproducing frequency can be set surely.

【0011】[0011]

【実施例】図1は、本発明の実施例による情報記録再生
装置の構成を示すブロック図である。また、図2、図3
は本実施例による情報記録再生装置の動作の流れ図であ
る。図1において、光ディスク1が本装置に挿入される
と、不図示のローディング機構によって、光ディスク1
はターンテーブル2上にロードされる。そして、スピン
ドルモータ3によって光ディスク1を回転させる(図2
S1)。次に、ヘッド5から出射さる光ビーム6を光デ
ィスク1の記録面に照射し(図2S2)、そして、フォ
ーカス引き込み制御を行うとともにトラッキング制御を
行い、光ビーム6を光ディスク1の記録面のトラックに
追従させる(図2S3)。
1 is a block diagram showing the configuration of an information recording / reproducing apparatus according to an embodiment of the present invention. In addition, FIG.
6 is a flowchart of the operation of the information recording / reproducing apparatus according to the present embodiment. In FIG. 1, when the optical disc 1 is inserted into the apparatus, the optical disc 1 is loaded by a loading mechanism (not shown).
Is loaded on turntable 2. Then, the optical disk 1 is rotated by the spindle motor 3 (see FIG. 2).
S1). Next, the light beam 6 emitted from the head 5 is applied to the recording surface of the optical disc 1 (S2 in FIG. 2), and focus pull-in control and tracking control are performed to direct the light beam 6 to a track on the recording surface of the optical disc 1. Follow it (Fig. 2 S3).

【0012】本実施例の情報記録再生装置においては、
各ゾーンごとに記録(あるいは再生)周波数を異ならせ
て情報の記録(あるいは再生)を行う。トラック追従と
ともに固定手段11は、ポジショナ4を固定解除し(図
2S3)、設定回路7は、バッファ10に格納してある
光ビーム6の位置情報(トラックナンバ、ゾーンナンバ
等)からゾーンに対応する記録(あるいは再生)周波数
を設定し、設定信号をクロック発生回路8に出力する
(図2S4)。クロック発生回路8は、設定回路7の設
定に応じた周波数のクロック信号をヘッド5に出力す
る。ヘッド5はそのクロック信号を用いて光ディスク1
に対して記録あるいは再生を行う。
In the information recording / reproducing apparatus of this embodiment,
Information is recorded (or reproduced) by changing the recording (or reproducing) frequency for each zone. Along with track tracking, the fixing means 11 releases the positioner 4 from being fixed (FIG. 2S3), and the setting circuit 7 corresponds to the zone from the position information (track number, zone number, etc.) of the light beam 6 stored in the buffer 10. The recording (or reproducing) frequency is set, and the setting signal is output to the clock generating circuit 8 (S4 in FIG. 2). The clock generation circuit 8 outputs a clock signal having a frequency according to the setting of the setting circuit 7 to the head 5. The head 5 uses the clock signal for the optical disc 1
To record or play back.

【0013】また、記録あるいは再生を終了し、光ディ
スク1を本装置から取り出すとき、光ビーム6の位置情
報をバッファ10に格納する(図3S1)。このとき、
光ビームの位置情報は、その時点で光ビームが位置して
いるトラックの情報を再生し、それをヘッド5から信号
処理回路9に出力し、信号処理回路9にて、ID情報を
読み出すことにより得ることができる。得られた位置情
報は設定回路7に送られる。そして、固定手段11によ
りポジショナ4を固定し、そして、トラッキング制御、
フォーカス制御を解除する(図3S2)。次に、ヘッド
5から出射される光ビーム6を消灯し(図3S3)、そ
して、スピンドルモータ3によって回転していた光ディ
スク1を停止させ、不図示のローディング機構によっ
て、光ディスク1はターンテーブル2からディスク取り
出し口へとアンロードされる(図3S4)。
When recording or reproduction is completed and the optical disk 1 is taken out of the apparatus, the position information of the light beam 6 is stored in the buffer 10 (S1 in FIG. 3). At this time,
The position information of the light beam is obtained by reproducing the information of the track where the light beam is located at that time, outputting it from the head 5 to the signal processing circuit 9, and reading the ID information in the signal processing circuit 9. Obtainable. The obtained position information is sent to the setting circuit 7. Then, the positioner 4 is fixed by the fixing means 11, and tracking control,
The focus control is released (S2 in FIG. 3). Next, the light beam 6 emitted from the head 5 is extinguished (S3 in FIG. 3), the optical disc 1 which has been rotated by the spindle motor 3 is stopped, and the optical disc 1 is removed from the turntable 2 by a loading mechanism (not shown). It is unloaded to the disc ejection port (S4 in FIG. 3).

【0014】再び記録あるいは再生を行う場合は、設定
回路7がバッファ10内の位置情報を読み取り、その位
置のゾーンに対応する記録(あるいは再生)周波数周波
数を設定すればよい。
When recording or reproducing again, the setting circuit 7 may read the position information in the buffer 10 and set the recording (or reproducing) frequency corresponding to the zone at that position.

【0015】[0015]

【発明の効果】光ビームを情報の記録あるいは再生を行
えるようにするとき、記録あるいは再生周波数の設定が
正確に行える。また、一度記録あるいは再生動作を終
え、再び開始するとき、原点ゾーン位置に記録再生手段
を移動させる必要がないため、処理が速くなるという効
果がある。
When the light beam is used for recording or reproducing information, the recording or reproducing frequency can be set accurately. Further, when the recording or reproducing operation is once ended and then restarted, it is not necessary to move the recording and reproducing means to the origin zone position, so that there is an effect that the processing becomes faster.

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

【図1】本発明の実施例による情報記録再生装置の構成
を示すブロック図。
FIG. 1 is a block diagram showing the configuration of an information recording / reproducing apparatus according to an embodiment of the present invention.

【図2】本発明の実施例による情報記録再生装置の動作
の流れ図。
FIG. 2 is a flowchart of the operation of the information recording / reproducing apparatus according to the embodiment of the present invention.

【図3】本発明の実施例による情報記録再生装置の動作
の流れ図。
FIG. 3 is a flowchart of the operation of the information recording / reproducing apparatus according to the embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 光ディスク 2 ターンテーブル 3 スピンドルモータ 4 ポジショナ 5 ヘッド 6 光ビーム 7 設定回路 8 クロック発生回路 9 信号処理回路 10 バッファ 11 固定手段 1 optical disk 2 turntable 3 spindle motor 4 positioner 5 head 6 light beam 7 setting circuit 8 clock generating circuit 9 signal processing circuit 10 buffer 11 fixing means

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ディスク状情報記録担体を半径方向に複数
のゾーンに分割し、記録あるいは再生をすべきゾーンに
応じた記録周波数あるいは再生周波数のクロック信号を
発生する信号発生手段と、 前記クロック信号に基づいて、前記記録担体に対して情
報の記録あるいは再生を行う記録再生手段と、 前記記録再生手段を記録あるいは再生していない時に固
定する固定手段と、 前記固定手段で固定された位置を示す情報を格納する記
憶手段とを有し、 前記信号発生手段は、再度記録あるいは再生を行う場
合、前記記憶手段に格納されている情報に基づいた記録
周波数あるいは再生周波数のクロック信号を発生するこ
とを特徴とする情報記録再生装置。
1. A signal generating means for dividing a disc-shaped information recording carrier into a plurality of zones in a radial direction and generating a clock signal of a recording frequency or a reproducing frequency according to a zone for recording or reproducing, and the clock signal. Based on the above, a recording / reproducing means for recording or reproducing information on the record carrier, a fixing means for fixing the recording / reproducing means when not recording or reproducing, and a position fixed by the fixing means are shown. Storage means for storing information, wherein the signal generating means generates a clock signal of a recording frequency or a reproduction frequency based on the information stored in the storage means when recording or reproducing again. Characteristic information recording / reproducing apparatus.
JP6038797A 1994-03-09 1994-03-09 Information recording and reproducing device Pending JPH07249268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6038797A JPH07249268A (en) 1994-03-09 1994-03-09 Information recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6038797A JPH07249268A (en) 1994-03-09 1994-03-09 Information recording and reproducing device

Publications (1)

Publication Number Publication Date
JPH07249268A true JPH07249268A (en) 1995-09-26

Family

ID=12535300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6038797A Pending JPH07249268A (en) 1994-03-09 1994-03-09 Information recording and reproducing device

Country Status (1)

Country Link
JP (1) JPH07249268A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5930221A (en) * 1995-08-07 1999-07-27 Fujitsu Limited Optical storage device made thinner by substituting electrical means for capabilities of sensors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5930221A (en) * 1995-08-07 1999-07-27 Fujitsu Limited Optical storage device made thinner by substituting electrical means for capabilities of sensors
US5966353A (en) * 1995-08-07 1999-10-12 Fujitsu Limited Optical storage device made thinner by substituting electrical means for capabilities of sensors
US5978330A (en) * 1995-08-07 1999-11-02 Fujitsu Limited Optical storage device made thinner by substituting electrical means for capabilities of sensors
US6292444B1 (en) 1995-08-07 2001-09-18 Fujitsu Limited Optical storage device made thinner by substituting electrical means for capabilities of sensors

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