JPS6015839A - Optical recording and reproducing device - Google Patents
Optical recording and reproducing deviceInfo
- Publication number
- JPS6015839A JPS6015839A JP12288683A JP12288683A JPS6015839A JP S6015839 A JPS6015839 A JP S6015839A JP 12288683 A JP12288683 A JP 12288683A JP 12288683 A JP12288683 A JP 12288683A JP S6015839 A JPS6015839 A JP S6015839A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- light source
- signal
- light
- recording medium
- 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
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
- G11B7/08—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
Landscapes
- Automatic Focus Adjustment (AREA)
- 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ＩＪ、光学的記録・再生装置に関づるもの（゛あ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical recording/reproducing device.
従来例の偶成どその問題魚
光学的記録・再生・位置としては、）ｖ、学的ビデＡノ
゛イスク、−二１ンバク１〜デ′イスクブレー＼７−が
良く知られている。またアモルファス拐料を用いた記録
媒体の結晶変化及び反０４率の変化を利用１ノだ光学的
記録・再生装置、光磁気効果を応用した光磁気ディスク
記録・再生装置は、記録・再生装置として良く知られて
いる。As for the optical recording, reproducing and positioning of conventional optical discs, the following are well known. In addition, optical recording and reproducing devices that utilize crystal changes and changes in the anti-04 ratio of recording media using amorphous materials, and magneto-optical disk recording and reproducing devices that utilize the magneto-optical effect are used as recording and reproducing devices. well known.
従来の光学的記録・再生装置について第１図を用いて説
明づる。光源゛１より出た光は、コリノー１−シノンズ
２とハーフミラ−３を通り、対物レンズ４で微少スポッ
トに絞られ、記録媒体５で反則し、この反ＱＪ光は、対
物レンズ４を通り、ハーフミラ−３で反則し、凸レンズ
６を通り、光検出器７に入る。光検出２：；７では、記
録媒体５からの反射光Ｊ：す、対物レンズ４ど記録媒体
５との相対位］σ検出信号（）Ａ−カスｘｌ差信０）及
び、光スボツ＋−と信号トラックとの相対位置信号〈ト
ラッキング誤舵（へンシ）が１９られる。フォーカス誤
差信号を入力とする位相補償回路８の出力を入力とする
フォーカス方向対１シｊレンス゛駆動回路９０出しン層
舅により、フォーカス方向方向シンし１１Ｖ動糸、１″
１０を駆動し、フＡ−カシング制御を’Ｉｊ’ ＜Ｉ）
ｔ＋ ｌ〜ラツ−１−ンク制御に関しでも同様て゛ある
。しかし八から前記フォーカス９呉差１ハ号及び１−ラ
ツキンク誤’ｊ５） （ｒｉ ｆ”’ｊは、記録媒体５
からの反則光Ｊ、すＪ＋７／’：ものであり、反射光は
、記録媒体５表面のキス、小−１り等の１２ヨ響を受け
、ノイズを多く含むしのである。よってこのノイズを含
む信号を用いて、夕４物レンズ４を駆動すると、リーボ
系が不安定なものとｈるという問題があつＡＴ ｏ’ａ
Ｊ：；第１図におい（，１Ｈま位相補１′：ｉ回路、
１２＋、１．ｌ・ラッキング方向対物レンズ駆動回路、
１３（Ｊ、１〜ラツキングｈ向ス・］物レしズ駆駆動了
である。A conventional optical recording/reproducing device will be explained with reference to FIG. The light emitted from the light source 1 passes through the Collineau 1-Sinons 2 and the half mirror 3, is narrowed down to a minute spot by the objective lens 4, and is reflected by the recording medium 5. This anti-QJ light passes through the objective lens 4, The light is reflected by the half mirror 3, passes through the convex lens 6, and enters the photodetector 7. In optical detection 2: ; 7, reflected light J from the recording medium 5, objective lens 4, relative position with respect to the recording medium 5] σ detection signal ()A-cus xl difference 0) and optical slot +- A relative position signal (tracking misdirection) between the signal track and the signal track is generated. The output of the focus direction pair 1 series drive circuit 90, which receives the output of the phase compensation circuit 8 which receives the focus error signal as input, generates a 11V moving thread, 1" in the focus direction.
10 and perform focusing control 'Ij'<I)
The same applies to the t+l to 1-link control. However, from 8 to the focus 9, there is a difference between 1 and 1.
The reflected light J, J+7/' is reflected from the recording medium 5, and the reflected light receives echoes such as kisses and small hits on the surface of the recording medium 5, and contains a lot of noise. Therefore, if a signal containing this noise is used to drive the four-object lens 4, there is a problem that the Liebo system becomes unstable.
J:; In Figure 1 (, 1H phase complement 1': i circuit,
12+, 1. l・racking direction objective lens drive circuit;
13 (J.
発明の目的
本発明はｌ記従来の欠点をＶＲ）ｆ’ｉ ’Ｊるしので
、ノイズによるリーボ系の不安定４ｉＪ３さえ、４ノー
ボな安定にか１ノることの−（゛さる光学的記録・再生
菰ｉｉを提供づ−ることを目的とＪる。OBJECTS OF THE INVENTION The present invention overcomes the drawbacks of the conventional VR) f'i 'J, so that even the instability of the Rivo system due to noise, even the instability of the Ribo system, can be reduced to a level of stability of 4 Novo. The purpose is to provide recording and playback services.
発明のｌｆ４成
上記［１的を）Ｙ成Ｊるため、本発明の光学的記録・ｉ
１］生装置は、記録・再生のための光ビームを発生Ｊ“
る光源と、この光源からの光ビームを記録媒体上で微少
スポット光に絞る対物レンズと、前記記６．Ｊ’（ｊｌ
、＋、を体からの反ｑ」光より前記対物レンズと記録媒
体どの）Ａ−カス方向に平行な第１の方向及び記録面ど
平１ｊ（かつトラック方向と直交Ｊる方向に平ｆコな第
２の方向の相対位置を検出して）Ａ−カス誤差信弓及び
１〜ラツキング誤差伝Ｈ３を出力りる第１の検出手段と
、前記対物レンズの前記第１の方向及び前記第２の方向
の静止（１１／、 ｉｆｉ ＩＪ”らの変（：ｒを検出
し”Ｃ１４−カス変位信号と１−ラッキング変位信号と
を出力りる第２の検出手段と、前記第２の検出手段から
の信号を位相補償した信シづど前記第１の検出手段から
の１乙号どににり前記刀物レンズを前記第１の方向及び
前記第２の方向に駆動する対物１メンス駆動装置とを備
えた溝成である。In order to achieve the above [1st objective], the optical recording of the present invention
1] The raw equipment generates a light beam for recording and playback.
a light source; an objective lens that focuses the light beam from the light source into a minute spot light on a recording medium; and 6. J'(jl
. a first detection means for detecting the relative position of the objective lens in the first direction and the second direction, and outputting an A-cass error signal and a racking error signal H3; a second detection means for detecting the stationary state (11/, ifi IJ", etc.) and outputting a "C14-cass displacement signal and a 1-racking displacement signal; and the second detecting means; an objective driver for driving the sword lens in the first direction and the second direction using a phase-compensated signal from the first detection means; It is a Mizonari with the following.
実施例の説明
部平、本発明の一実施例について、図面に基づいて説明
する。第２図は光学的記録再生装置の全体（ｊ１１或図
り゛、第１図に承り’Ｉ：’１５成シタ′Ａミど同一の
Ｊｌ’ｉ成要崇に（ま同一の符円をｆ＝Ｊ してての説
明を省略する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. Figure 2 shows the entire optical recording/reproducing device (j11 or diagram), and following Figure 1, 'I:' =J I will omit the explanation.
第２図におい−Ｃ１１４（Ｊ、］］Ａ−力スブ向ス４物
レンズ位置検出器、１５はｌ・ラッキング方向対物レン
ズ位置（９０Ｉｔ ｉｙｉ、Ｉ Ｇ ＩＪ、位相袖Ｉｒ
＋ 回路、１７（ｊ、）威粋器、１ Ｂ （ｊ：位相補
償回路、１９ Ｌに減算器である。In Fig. 2 -C114(J,]] A-force subdirection four-objective lens position detector, 15 indicates l/racking direction objective lens position (90It iyi, I G IJ, phase sleeve Ir
+ Circuit, 17 (j,) Power device, 1 B (j: Phase compensation circuit, 19 L is a subtractor.
光源１からの光はコリメーｌ−Ｌノノズ２及Ｏ゛ハーフ
ミラ−３を通り、対物レンズ４で微少スポットに絞られ
、記録！＃、 １４−５に照ｑＪされる。記録ケ！１俸
５℃・反ｑＪシた光（，１対物レンズ４を通り、ハーフ
ミラ−３で反ｑ１され、凸レンズ６を）σ１す、光検出
器７に入ＥＩＪりる。対物レンズ４のフＡ−カス方向の
静１１泣圃からの変位を検出り−るフＡ−カス方向対物
レンズも７置検出器１４からの変位仏）二；出力を人力
どして１１′ｌ相？ｉｌｉ ｎ’を回路１６の出ツノ信
εと光１【・）出器７からのフォーカス誤差信弓どの差
信シＥを入ツノとするフＡ−カスプノ向３４物レンズ駆
りｊ回路０の出力でフＡ−カス方向対物しンズ駆動崇了
１０を駆動し、対物レンズ４ど記録媒体５ｊとのｆｌ１
１１！Ｊ！！ ＜、定に保つり一ボ系を構成する。１−
ラッキング制御″に関しでも同柱である。なＪ３、変位
信号と誤差信号との差信号の変わりに和信号を用いても
よい。The light from the light source 1 passes through the collimator L-L nozzle 2 and the O゛ half mirror 3, is focused into a minute spot by the objective lens 4, and is recorded! #, qJ is shown in 14-5. Record! The light (passes through the objective lens 4, is reflected by the half mirror 3, and is reflected by the convex lens 6) σ1 and enters the photodetector 7. The focus A-direction objective lens that detects the displacement of the objective lens 4 in the focus direction from the static 11 crying field also detects the displacement from the 7-position detector 14. l phase? ili n' is the output horn signal ε of the circuit 16 and the light 1 [・) The focus error signal from the output device 7. The objective lens drive unit 10 is driven in the focus direction, and the objective lens 4 is connected to the recording medium 5j fl1.
11! J! ! ＜Constituting a one-boot system by keeping it constant. 1-
The same principle applies to "racking control". J3. Instead of the difference signal between the displacement signal and the error signal, a sum signal may be used.
第３図は対物レンズ４の動きを直接検出づ−る手段の斜
視図で、２０，２１１は光源、２２，２３１．：Ｌ光位
置検出素子、矢印へはフΔ−カス方向、矢印Ｂはトラッ
ク方向を示してＣ１０す、光１ＩＰｉ２０と光位置検出
素子２２どでフォーカス方向対物レンズ位置検出器１４
を、Ｊ、た光源２１と光位置検出素子２３とで（〜ラッ
キングプノ向幻物しンス゛位置検出諸１：）をそれぞれ
（１−１成１）でいる。対物レンズ４の側面に取り（−
１（〕られた光源２０に夕・１而して、ノＡ−カスノ）
向に平行に設置されｌζ光泣買検出累子２２により、フ
、ｉ ＝ ノＪス方向の光源２（）の変位、りなわち対
物レンズ４のフＡ−カスｈ向の変位を検出づる。信号ト
・ラック方向に直角な方向の対物レンズ゛４−ｑ）変位
についＣも、対物レンズ４に取り（＝Ｊ ｔｊられた光
源２１に対面して、１へラック方向と直交づる方向に平
行に配置された光位置検出素Ｙ２３により検出Ｊる。FIG. 3 is a perspective view of means for directly detecting the movement of the objective lens 4, in which 20, 211 are light sources, 22, 231, . :L light position detection element, arrow indicates focus direction, arrow B indicates track direction;
The light source 21 and the optical position detection element 23 (~racking plane phantom sensor position detection elements 1:) are respectively (1-1 configuration 1). Place it on the side of objective lens 4 (-
1 () At the light source 20, it was evening.
The displacement of the light source 2 ( ) in the direction of F, i = ノ J, that is, the displacement of the objective lens 4 in the direction of focus A is detected by the light drop detection resistor 22, which is installed parallel to the direction. . Regarding the displacement of the objective lens (4-q) in the direction perpendicular to the signal track direction, C is also taken by the objective lens 4 (=J). It is detected by the optical position detection element Y23 arranged at .
第４図は別の実Ｍｔｉ例を示しており、この実施例で゛
（よ、光位置検出素子２２．２３の代わりに２次元乎面
光位置検出索子２４を用いている１、す４ｒわ４）、対
物レンズ４に取り（４−ＧｒＪられ１．：光源２５に夕
・１面しで、）Ａ−カス方向に平行にかつ仁「）１ヘラ
ツク方向に垂直に配置ざｌ′した２次元下面ソＣ泣；σ
検出崇了２４（二より、フッ１−カスノ）向の変１）Ｌ
と、記う゛呆ｊ１．％１体１１１１内で゛１シ号１ヘラ
ツクに直角な方向の変１）２とを検出づる。FIG. 4 shows another example of actual Mti. 4), placed on the objective lens 4 (4-GrJ and 1. facing the light source 25) parallel to the A-screw direction and perpendicular to the 1-helical direction. 2D bottom side C crying; σ
Detection Suryo 24 (from the second, fu 1-kasuno) direction change 1) L
And so I wrote: 1. Changes 1) and 2 in the direction perpendicular to the %1 body 1111 are detected.
発明の効５１！
部平説明ｔ、 ７こように本発明にＪ、４′口Ｊ、記録
媒体の表面のキズ・（゛）ホコリ等の影１７′？を受１
：Ｊイｃ、い対物レンズの位置信シラをも利用し−（）
Ａ−カシンク制御及び１〜°ノツギング制御をか（−）
るよう（ごしたので、家宝したり一−ボ系を１！）るこ
とが（さ、記録・１０牛１１１性４Ｊ棧ｉ１１＋’的に
１１１めることがて′きる。Effect of invention 51! Part 7: Thus, the present invention is affected by scratches, dust, etc. on the surface of the recording medium 17'? received 1
:Jc, also use the position signal of the objective lens.
A-Cashing control and 1~°notgging control (-)
Now that I have it, I can keep it as an heirloom or make a 1-bo system (1!).
第１図は従″Ａ′、装首の全体構成図、第２図は本光明
の一実施例における光学的記録・’ｉｆｊ ＜ｌ装置の
仝＠硯
体構成図、第３３図は第２の検出子１段の→→図、第４
図は別の実施例にお１）る第２の検出手段の１；゛１視
図である。
１・・・光１１１１．２・・・コリノー１〜レンズ゛、
３・・・ハーフミラ−１／１・・・対物レンズ、５・・
・ｕＬ！ Ｒダ体１休、６・・・凸レンズ、７・・・光
検出器、０・・・フＡ−カス方向対物しンズ駆動回Ｗｒ
Ｓ、１０・・・ノア１〜カスプノ向λ４物レンズ゛駆動
素了、１２・・・ドラッギング方向対物レンズ駆動回路
、１３・・・１−シッニ１ングブノ向ス＝Ｉ ｉ’ｙ＞
Ｉ−′ンズ駆動素了、１４・・・フＡ−カス方向対物
レンズ位（１り］″検出器、１５・・・トラツー１−ン
グ方向幻物１ノンズ位置検出器、１Ｇ、 １（！・・・
位相補旧回路、１７．１９・・減等器、２０，２１．２
５・・・光源、２２．２３・・・光位置検出素子、２４
・・・２次元下面光位置検出木ｒ
代理人 な 木 ５′辷 弘
第１図
５
第７図Fig. 1 is a diagram of the overall configuration of the head attachment, Fig. 2 is a diagram of the configuration of the optical recording/'ifj <l device in one embodiment of the present invention, and Fig. 33 is the configuration of the →→Figure of 1st stage of detector, 4th
The figure is a 1:1 perspective view of the second detection means in 1) of another embodiment. 1...Light 1111.2...Colino 1~Lens゛,
3...Half mirror-1/1...Objective lens, 5...
・uL! R body 1 rest, 6... Convex lens, 7... Photodetector, 0... Focus A-cushion direction objective lens driving time Wr
S, 10...Noah 1 - λ4 objective lens in the direction of the mirror drive completed, 12...Draging direction objective lens drive circuit, 13...1-Signal direction direction = I i'y>
I-' lens drive completed, 14... Focus direction objective lens position (1)'' detector, 15... Tracing direction phantom 1 lens position detector, 1G, 1 (! ...
Phase compensation circuit, 17.19... Equalizer, 20, 21.2
5... Light source, 22.23... Optical position detection element, 24
...Two-dimensional bottom light position detection tree r Proxy tree 5' Hiroshi Toshi Figure 1 5 Figure 7
Claims (1)
この光源からの光ビームを記録媒体上で微少スボッ１−
光に絞る対物レンズと、前記記録媒体からの反ｑ４光よ
り前記対物レンズと記録媒体とのフォーカス方向に平行
な第１の方向及び記録面と平行でかつトラック方向とｉ
ｌ−交づる方向に平？’ｊ ｌｉ第２の方向の相対位箇
１を検出してフＡ−カス誤差信号及び１ヘラツキング１
１差信弓を出力−りる第１の検出手段と、１ｊＦｉ記り
・１物１ノンズの前記第１の方向及び前記第２のＪｊ向
の静止位置からの変移を検出してフΔ−カス変位信号と
１−ラッキング変位信号とを出力する第２の検出手段と
、前記第２の検出手段からの信号を位相補（貸した１３
号と前記第゛１の検出手段からの信号とによりｎｏ記対
物１ノンズを前記第１の方向及び前記第２の方向に駆動
゛りる対物レンズ駆動装置ζｌとを備えた光学的記録・
再生装置。 ２、釘ｊ２の検出手段は、対物レンズに取（１りら１’
Ｌ ／ｊ第１の光源と、この第１の光源に対面しかつ第
１のツノ向に平行に配置ご、れた第１の光位置検出素子
と、前記対物レンズに取イ」（］られた第２の光源と、
この第２の光源に対面しかつ第２の方向に平行に配置さ
れた第２の光位置検出索子とをｈづる（ν１１＆とした
特ｉ′［請求の範囲第１項記載の光学的記録・再生装置
。 ３、第２の検出手段は、対物レンズに取りイ・ｈ）られ
た検出用光源と、この検出光源に対面しかつ第１及び第
２の方向に平ｔｊに配置された２次元型面光位置検出県
了とをイ〕りる構成と（）たＭＩ Ｓ’ｌ請求の範囲第
１ Ｊｎ ｎｌ、！戟の光学的記録・再生装置。[Claims] 1. A light source that generates a light beam for recording/reproducing 41;
The light beam from this light source is applied to the recording medium in minute slits.
an objective lens that focuses on the light, and a first direction parallel to the focusing direction between the objective lens and the recording medium and a first direction parallel to the recording surface and the track direction from the inverted q4 light from the recording medium.
l-flat in the intersecting direction? 'j li Detect the relative position 1 in the second direction and generate the focusing error signal and 1
a first detecting means outputting a one-difference signal bow; a second detection means for outputting a scrap displacement signal and a 1-racking displacement signal;
and an objective lens driving device ζl that drives an objective 1 lens in the first direction and the second direction by a signal from the first detection means and a signal from the first detection means.
playback device. 2. The means for detecting the nail j2 is attached to the objective lens.
L /j A first light source, a first optical position detection element facing the first light source and arranged parallel to the first horn direction, and a first light position detecting element that is attached to the objective lens. a second light source;
and a second optical position detecting element facing the second light source and arranged parallel to the second direction. - Reproduction device. 3. The second detection means includes a detection light source mounted on the objective lens, and a detection light source facing the detection light source and arranged flat in the first and second directions. MI S'l Claims No. 1 Jn nl,! Geki's optical recording/playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12288683A JPS6015839A (en) | 1983-07-05 | 1983-07-05 | Optical recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12288683A JPS6015839A (en) | 1983-07-05 | 1983-07-05 | Optical recording and reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6015839A true JPS6015839A (en) | 1985-01-26 |
| JPH0320818B2 JPH0320818B2 (en) | 1991-03-20 |
Family
ID=14847065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12288683A Granted JPS6015839A (en) | 1983-07-05 | 1983-07-05 | Optical recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015839A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61276137A (en) * | 1985-05-30 | 1986-12-06 | Fujitsu Ltd | Optical head actuator |
| JPS6276033A (en) * | 1985-09-30 | 1987-04-08 | Ricoh Co Ltd | Optical pickup |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57191840A (en) * | 1981-05-20 | 1982-11-25 | Mitsubishi Electric Corp | Track follow-up controller |
-
1983
- 1983-07-05 JP JP12288683A patent/JPS6015839A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57191840A (en) * | 1981-05-20 | 1982-11-25 | Mitsubishi Electric Corp | Track follow-up controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61276137A (en) * | 1985-05-30 | 1986-12-06 | Fujitsu Ltd | Optical head actuator |
| JPS6276033A (en) * | 1985-09-30 | 1987-04-08 | Ricoh Co Ltd | Optical pickup |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0320818B2 (en) | 1991-03-20 |
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