JPS63244323A - Optical card recording and reproducing method - Google Patents
Optical card recording and reproducing methodInfo
- Publication number
- JPS63244323A JPS63244323A JP62078040A JP7804087A JPS63244323A JP S63244323 A JPS63244323 A JP S63244323A JP 62078040 A JP62078040 A JP 62078040A JP 7804087 A JP7804087 A JP 7804087A JP S63244323 A JPS63244323 A JP S63244323A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- head
- scanning
- optical
- optical card
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims description 23
- 238000010586 diagram Methods 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 4
- 206010041662 Splinter Diseases 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/10—Control of operating function, e.g. switching from recording to reproducing by sensing presence or absence of record in accessible stored position or on turntable
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/08—Insulation or absorption of undesired vibrations or sounds
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film
-
- 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
-
- 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
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
Landscapes
- Credit Cards Or The Like (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は同一光学ヘッドを用いて光カードヘビノド状に
情報を記録し、再生する光カード記録再生方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an optical card recording and reproducing method for recording and reproducing information in an optical card snake-like manner using the same optical head.
現在、キャッシュカード、クレジットカード等の磁気カ
ードが広く普及しているが、記録密度の向上、記録の確
実性を図るために光学的に情報を記録する光情報記録カ
ードが提案されている。Currently, magnetic cards such as cash cards and credit cards are widely used, but optical information recording cards that optically record information have been proposed in order to improve recording density and ensure recording reliability.
このような光情報記録カードにおいては、従来、ゴミ、
キズに対する保護のためにその表面に透明な保護層が設
けられている。しかしながら、光カードの保護層はカー
ドという形態状の理由から、光ディスクのそれと比べて
も薄く、材料的にも、また物理的変形などにより、この
層が光学的異方性、即ち複屈折性を有している場合が多
い。そのため光カードの記録再生において、光ディスク
におけると同様な光ヘッドを使用することができなかっ
た。この点について第５図により説明する。Conventionally, in such optical information recording cards, dust,
A transparent protective layer is provided on its surface to protect against scratches. However, due to the form of the card, the protective layer of an optical card is thinner than that of an optical disk, and due to material and physical deformation, this layer exhibits optical anisotropy, that is, birefringence. Many people have it. For this reason, it has not been possible to use an optical head similar to that used in optical disks when recording and reproducing information on optical cards. This point will be explained with reference to FIG.
第４図は光デイスク用光ヘッドによる再生方法を示す図
で、図中、１はレーザ光源、２はレーザ光、３は偏光ビ
ームスプリフタ、４は１／４波長板、５はカード、６は
反射光、７はセンサである。FIG. 4 is a diagram showing a reproducing method using an optical head for an optical disk. In the figure, 1 is a laser light source, 2 is a laser beam, 3 is a polarizing beam splitter, 4 is a quarter-wave plate, 5 is a card, and 6 is reflected light, and 7 is a sensor.
図において、レーザ光源１からのレーザ光２が、例えば
図のＡのような直線偏光であったとすると、ビームスプ
リンタ３．１／４波長板４を経てＢのような円偏光とな
り、これが光カード５で反射され、反射ビーム６はＢと
反対方向の円偏光Ｃとなり、１／４波長板４を経て偏光
Ａに直交方向のＤのような偏光が得られ、これがビーム
スプリンタ３を介してセンサ７で検出される。この場合
、カード５が複屈折性を有していると、反射ビーム６は
円偏光とならず楕円偏光となり、１／４波長板４を経た
ビームは、Ａ成分とＤ成分を有することになる。そして
この複屈折性が場所的に異なっていると偏光り成分は信
号が記録されていなくても強度が変化し、センサ７では
恰も信号が記録されているよう、に検出してしまうこと
になる。またＡ成分の信号はビームスプリッタ３を経て
レーザ光源ｌへ戻り、発振を不安定にしてしまうことに
なる。In the figure, if the laser beam 2 from the laser light source 1 is linearly polarized light as shown in A in the figure, it passes through the beam splinter 3 and 1/4 wavelength plate 4 and becomes circularly polarized light as shown in B. 5, the reflected beam 6 becomes circularly polarized light C in the opposite direction to B, and passes through the quarter-wave plate 4 to obtain polarized light D in the direction perpendicular to the polarized light A. This is transmitted to the sensor via the beam splinter 3. Detected at 7. In this case, if the card 5 has birefringence, the reflected beam 6 will not be circularly polarized but will be elliptically polarized, and the beam that has passed through the quarter-wave plate 4 will have an A component and a D component. . If this birefringence differs from place to place, the intensity of the polarized light component will change even when no signal is recorded, and the sensor 7 will detect it as though a signal was being recorded. . Further, the signal of the A component returns to the laser light source l via the beam splitter 3, making the oscillation unstable.
そこで、このような複屈折性の問題を回避すると共に、
１トラック分の情報を１度に読み込めるように情報構成
と光学系を工夫した光カードの読み取り方法が提案され
ている。Therefore, in order to avoid such birefringence problems,
An optical card reading method has been proposed in which the information structure and optical system are devised so that one track's worth of information can be read at one time.
第５図はこのような光カード読み取り装置の構成を示す
図、第６図は第５図の装置の場合に使用される記録情報
のデータ構成を示す図、１１は光源、１２はコリメータ
レンズ、１３は拡散板、１４は集束レンズ、１５はハー
フミラ−１１６は対物レンズ、１７は光カード、１８は
ラインセンサである。FIG. 5 is a diagram showing the structure of such an optical card reading device, FIG. 6 is a diagram showing the data structure of recorded information used in the case of the device shown in FIG. 5, 11 is a light source, 12 is a collimator lens, 13 is a diffuser plate, 14 is a focusing lens, 15 is a half mirror, 116 is an objective lens, 17 is an optical card, and 18 is a line sensor.
記録情報のデータ構成は、第６図に示すようにコラムＰ
と、ドラックＬ＋ 、Ｌｘ・・・からなるデータ部Ｑ、
トランク番号を区別するＳから１コラムがなっており、
この幅が１鶴程である。The data structure of the recorded information is column P as shown in Figure 6.
and a data section Q consisting of drag L+, Lx...
There is one column starting from S that distinguishes the trunk number,
This width is about one crane.
このような情報が記録されている光カード１７に対して
、光源１１から、コリメータレンズ１２、集束レンズ１
４、ハーフミラ−１５、対物レンズ１６からなる有限結
像系により焦点を合わせて光を当て、１トラック分の情
報を１度にラインセンサ１８で読み取る。そしてカード
を矢印のように動かすことにより各トラックの情報を順
次読み取り、次のコラムの情報読み取る場合には、光学
系全体を移動して行っている。From the light source 11, the collimator lens 12, the focusing lens 1
4. Light is focused by a finite imaging system consisting of a half mirror 15 and an objective lens 16, and the line sensor 18 reads information for one track at a time. By moving the card in the direction of the arrow, information on each track is read in sequence, and when reading information on the next column, the entire optical system is moved.
ところで、近年カードの保護層が複屈折性をもたないも
のが提案されるようになってきている。By the way, in recent years, cards with protective layers that do not have birefringence have been proposed.
第６図に示すような従来の光カード読み取り方法によれ
ば、を限結像系とラインセンサを使用して１度に１トラ
ック分の情報読み取りができるものの、結像する距離が
決まっているため装置が大型化してしまい、焦点距離を
短くして小型化しようとするとレンズ系の収差の問題が
生じてしまうという問題点があった。また第５図の有限
結像系を用いた装置では読み取り専用であり、同一光学
系では記録を行うことはできなかった。According to the conventional optical card reading method shown in Fig. 6, information for one track can be read at a time using a limited imaging system and a line sensor, but the imaging distance is fixed. Therefore, the device becomes large in size, and if an attempt is made to reduce the size by shortening the focal length, the problem arises of aberrations in the lens system. Further, the apparatus using the finite imaging system shown in FIG. 5 is for reading only, and recording cannot be performed using the same optical system.
本発明はかかる事情に鑑みてなされたもので、光ディス
クにおけるのと同様な光ヘッドを使用してヘッドをコン
パクトにすると共に、同一の光学系により記録再生を行
うことができる光カード記録再生方法を提供することを
目的とする。The present invention has been made in view of the above circumstances, and provides an optical card recording and reproducing method that uses an optical head similar to that used in optical disks, makes the head compact, and allows recording and reproducing to be performed using the same optical system. The purpose is to provide.
そのために本発明は、レーザ光により光カードに情報を
書き込むと共に、書き込まれた情報を読み取る光カード
記録再生方法において、電磁式駆動制御手段を用いてレ
ーザ光のスキャニングを行うことを特徴とする。To this end, the present invention is an optical card recording and reproducing method for writing information on an optical card using a laser beam and reading the written information, which is characterized in that scanning of the laser beam is performed using an electromagnetic drive control means.
本発明は、電磁式駆動制御手段を用いてフォーカシング
制御されたレーザー光スポットのスキャニングを行うこ
とにより、同一の光学系で記録再生を行うと共に、構成
をコンパクトにすることができ、ラインセンサの使用を
不要にすることができる。By scanning a laser beam spot whose focusing is controlled using an electromagnetic drive control means, the present invention can perform recording and reproduction using the same optical system and has a compact configuration, and the use of a line sensor. can be made unnecessary.
以下、実施例を図面を参照して説明する。 Examples will be described below with reference to the drawings.
第１図は本発明による光カード記録再生方法に使用する
記録再生ヘッドの一実施例を示す図である。図中、２１
は記録再生ヘッド、２２は半導体レーザ、２３はビーム
スプリンタ、２４はコリメータレンズ、２５は１／４波
長板、２６は集束レンズ、２７は光カード、２８は円柱
レンズ、２９は受光素子、３０は支点、３１はフォーカ
シングコイル、３２は永久磁石、３３はスキャニングコ
イル、３４は永久磁石である。FIG. 1 is a diagram showing an embodiment of a recording/reproducing head used in the optical card recording/reproducing method according to the present invention. In the figure, 21
22 is a semiconductor laser, 23 is a beam splinter, 24 is a collimator lens, 25 is a quarter wavelength plate, 26 is a focusing lens, 27 is an optical card, 28 is a cylindrical lens, 29 is a light receiving element, 30 is a A fulcrum, 31 is a focusing coil, 32 is a permanent magnet, 33 is a scanning coil, and 34 is a permanent magnet.
図において、半導体レーザ２２からの平行ビームをビー
ムスプリッタ２３、コリメークレンズ２４．１／４波長
板２５、集束レンズ２６を介して光カード２７に当て、
その反射ビームをビームスプリッタ２３、円柱レンズ２
８を介して、受光素子２９により読み取る。この場合、
光カード２７に記録されている情報の構成は第６図のも
のと同様である。In the figure, a parallel beam from a semiconductor laser 22 is applied to an optical card 27 via a beam splitter 23, a collimating lens 24, a quarter wavelength plate 25, and a focusing lens 26.
The reflected beam is transferred to the beam splitter 23 and the cylindrical lens 2.
8 and is read by the light receiving element 29. in this case,
The structure of the information recorded on the optical card 27 is the same as that in FIG.
フォーカシング制御機構は、集光レンズの側部に取りつ
けられたフォーカシングコイル３１を集光レンズ２Ｇの
外周部に設けられた永久磁石３２の磁界中に置くことに
より構成し、フォーカシングコイルへの電流を制御する
ことにより記録再生ヘッド２１の集光レンズ２６を矢印
Ａで示すように光軸方向に上下させて行う。この場合、
集光レンズ２６は光軸方向に対して自由度を有するよう
に、ゴムダンパーやバネ等により支持されている。The focusing control mechanism is constructed by placing a focusing coil 31 attached to the side of the focusing lens in the magnetic field of a permanent magnet 32 provided on the outer periphery of the focusing lens 2G, and controls the current to the focusing coil. This is done by moving the condensing lens 26 of the recording/reproducing head 21 up and down in the optical axis direction as shown by arrow A. in this case,
The condensing lens 26 is supported by a rubber damper, a spring, etc. so as to have a degree of freedom in the optical axis direction.
記録再生ヘッドのスキャニング機構は、記録再生ヘッド
２１の側部に取りつけたコイル３３を永久磁石３４の磁
界中に置くことにより構成し、コイル３３への電流を制
御することにより、光軸上に位置する３０を支点として
、振子のようにヘッド２１を矢印Ｂの如く動かすことに
よりスキャニング動作が行われる。この場合も、記録再
生ヘッド２１は、スキャン方向又はトラッキング方向に
対して自由度を有するように、ゴムダンパー、或いはバ
ネ等によって支持されている。なお、スキャニングは、
支点３０を中心とした振子動作でなく、ヘッドを両側で
弾性支持することにより完全な水平動作により行うよう
にしてもよい。The scanning mechanism of the recording/reproducing head is constructed by placing a coil 33 attached to the side of the recording/reproducing head 21 in the magnetic field of a permanent magnet 34, and by controlling the current to the coil 33, the scanning mechanism is constructed by placing a coil 33 attached to the side of the recording/reproducing head 21 in the magnetic field of a permanent magnet 34. The scanning operation is performed by moving the head 21 like a pendulum in the direction of arrow B using the head 30 as a fulcrum. In this case as well, the recording/reproducing head 21 is supported by a rubber damper, a spring, or the like so as to have a degree of freedom in the scanning direction or the tracking direction. In addition, scanning is
Instead of a pendulum motion centered on the fulcrum 30, the head may be elastically supported on both sides to perform a completely horizontal motion.
またトラッキング制御は、スキャニング方向については
スキャニング用電流にトラッキング用電流を重畳するか
、或いはスキャニングコイル３３とは別にトラッキング
制御用のコイルを設け、このコイルにトラッキング制御
用の電流を流すようにしてもよい。またスキャニング方
向と直角方向については、トラッキング制御用のコイル
（図示せず）を設けて行う。Further, tracking control can be carried out by superimposing a tracking current on the scanning current in the scanning direction, or by providing a tracking control coil separately from the scanning coil 33 and passing the tracking control current through this coil. good. Further, in the direction perpendicular to the scanning direction, a coil (not shown) for tracking control is provided.
このような構成により、ラインセンサを用いずに情報の
読み取りを行うことができ、また読み取りだけでなくビ
ーム強度を強くすることにより同様にして書き込みを行
うことも可能である。With such a configuration, information can be read without using a line sensor, and in addition to reading, it is also possible to write in a similar manner by increasing the beam intensity.
なお、上記実施例において、コイルに作用する磁界発生
用の磁石として永久磁石を使用したが、電磁石でもよい
ことは言うまでもない。In the above embodiment, a permanent magnet was used as a magnet for generating a magnetic field acting on the coil, but it goes without saying that an electromagnet may also be used.
第２図は本発明による他の実施例を示す図で、レンズ４
１の位置を光カードに平行に駆動制御することにより、
スキャニングを行っている以外は第１図と同様である。FIG. 2 is a diagram showing another embodiment according to the present invention, in which the lens 4
By driving and controlling the position of 1 parallel to the optical card,
It is the same as FIG. 1 except that scanning is performed.
第３図は本発明による他の実施例を示す図で、図中、５
１はミラー、５２はヘッド光学系である。FIG. 3 is a diagram showing another embodiment according to the present invention, in which 5
1 is a mirror, and 52 is a head optical system.
本実施例においては、ミラー５１の角度を制御すること
により、ヘッド光学系への入射位置を変えてビームのス
キャニングを行っている。In this embodiment, by controlling the angle of the mirror 51, the beam is scanned by changing the position of incidence on the head optical system.
なお、本発明は上記実施例に限定されるものではなく、
例えば第１図の方法でスキャニングを行い、トラッキン
グ制御のみ第２図、第３図に示した方法で行うようにし
てもよく、又はこれとは逆に、スキャニングを第２図、
第３図に示した方法で行い、トラッキング制御を第１図
に示した方法で行うようにしてもよい。Note that the present invention is not limited to the above embodiments,
For example, scanning may be performed using the method shown in FIG. 1 and only tracking control may be performed using the method shown in FIGS.
The tracking control may be performed using the method shown in FIG. 3, and the tracking control may be performed using the method shown in FIG.
以上・のように本発明によれば、ラインセンサを使用す
る情報のフォーマットをそのまま用い、光ディスク等の
読み取りに使用されているヘッド構成における電磁式駆
動機構を利用してスキャニングを行うことにより、ライ
ンセンサを使用せず、コンパクトな同一の光学系で、光
カードの記録再生を行うことが可能となる。As described above, according to the present invention, the information format that uses the line sensor is used as is, and scanning is performed using the electromagnetic drive mechanism in the head configuration used for reading optical discs, etc. It becomes possible to perform recording and reproduction on an optical card using the same compact optical system without using a sensor.
第１図は本発明による光カード記録再生方法に使用する
記録再生へラドの一実施例を示す図、第２図は本発明に
よる他の実施例を示す図、第３図は本発明による他の実
施例を示す図、第４図は光デイスク用光ヘッドによる再
生方法を示す図、第５図は従来の光カード読み取り！ａ
置の構成を示す図、第６図は記録情報のデータ構成を示
す図である。
２１・・・記録再生ヘッド、２２・・・半導体レーザ、
２３・・・ビームスプリフタ、２４・・・コリメータレ
ンズ、２５・・・１／４波長板、２６・・・集束レンズ
、２７・・・光カード、２８・・・円柱レンズ、２９・
・・受光素子、３０・・・支点、３１・・・フォーカシ
ングコイル、３２・・・磁石、３３・・・スキャニング
コイル、３４・・・磁石、４１・・・レンズ、５１・・
・ミラー、５２・・・ヘッド光学系。
出 願 人 大日本印刷株式会社代理人 弁理士
蛭 川 晶 信（外２名）第１図
第２図 第３図FIG. 1 is a diagram showing one embodiment of the recording/reproducing device used in the optical card recording/reproducing method according to the present invention, FIG. 2 is a diagram showing another embodiment according to the present invention, and FIG. 3 is a diagram showing another embodiment according to the present invention. FIG. 4 is a diagram showing a reproduction method using an optical head for an optical disk, and FIG. 5 is a diagram showing a conventional optical card reading method. a
FIG. 6 is a diagram showing the data structure of recorded information. 21... Recording/reproducing head, 22... Semiconductor laser,
23... Beam splitter, 24... Collimator lens, 25... 1/4 wavelength plate, 26... Focusing lens, 27... Optical card, 28... Cylindrical lens, 29...
... Light receiving element, 30... Fulcrum, 31... Focusing coil, 32... Magnet, 33... Scanning coil, 34... Magnet, 41... Lens, 51...
-Mirror, 52...Head optical system. Applicant Dai Nippon Printing Co., Ltd. Agent Patent Attorney Akinobu Hirukawa (2 others) Figure 1 Figure 2 Figure 3
Claims (6)
、書き込まれた情報を読み取る光カード記録再生方法に
おいて、電磁式駆動制御手段を用いてレーザ光のスキャ
ニングを行うことを特徴とする光カード記録再生方法。(1) In an optical card recording and reproducing method for writing information on an optical card using a laser beam and reading the written information, the optical card recording and reproducing method is characterized in that scanning of the laser beam is performed using an electromagnetic drive control means. Method.
ことにより行う特許請求の範囲第１項記載の光カード記
録再生方法。(2) The optical card recording and reproducing method according to claim 1, wherein the scanning is performed by driving and controlling the entire head.
することにより行う特許請求の範囲第１項記載の光カー
ド記録再生方法。(3) The optical card recording and reproducing method according to claim 1, wherein the scanning is performed by driving and controlling a lens of a head.
角を制御することにより行う特許請求の範囲第１項記載
の光カード記録再生方法。(4) The optical card recording and reproducing method according to claim 1, wherein the scanning is performed by controlling the incident angle of laser light to the head.
光である特許請求の範囲第１項記載の光カード記録再生
方法。(5) The optical card recording and reproducing method according to claim 1, wherein the laser beam is a focusing-controlled laser beam.
御を行う特許請求の範囲第１項記載の光カード記録再生
方法。(6) The optical card recording and reproducing method according to claim 1, wherein tracking control is performed using the electromagnetic drive control means.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62078040A JPS63244323A (en) | 1987-03-31 | 1987-03-31 | Optical card recording and reproducing method |
| EP92121802A EP0537801B1 (en) | 1987-02-12 | 1988-02-12 | Data recording and reproducing apparatus for use in an optical card |
| DE3855258T DE3855258T2 (en) | 1987-02-12 | 1988-02-12 | Data recording and reproducing apparatus for use with an optical card |
| US07/274,994 US5008552A (en) | 1987-02-12 | 1988-02-12 | Data recording and reproducing apparatus for an optical card |
| EP88901639A EP0301108B1 (en) | 1987-02-12 | 1988-02-12 | Data recording/reproducing apparatus for optical card |
| PCT/JP1988/000142 WO1988006335A1 (en) | 1987-02-12 | 1988-02-12 | Data recording/reproducing apparatus for optical card |
| AU12923/88A AU594865B2 (en) | 1987-02-12 | 1988-02-12 | Data recording/reproducing apparatus for optical card |
| DE88901639T DE3885177T2 (en) | 1987-02-12 | 1988-02-12 | DATA STORAGE / PLAYBACK DEVICE FOR OPTICAL CARD. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62078040A JPS63244323A (en) | 1987-03-31 | 1987-03-31 | Optical card recording and reproducing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63244323A true JPS63244323A (en) | 1988-10-11 |
Family
ID=13650717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62078040A Pending JPS63244323A (en) | 1987-02-12 | 1987-03-31 | Optical card recording and reproducing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63244323A (en) |
-
1987
- 1987-03-31 JP JP62078040A patent/JPS63244323A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5712842A (en) | Optical pick-up device | |
| JPH06101156B2 (en) | Magneto-optical head | |
| JP2861188B2 (en) | Magneto-optical recording / reproducing device | |
| US5488592A (en) | Optical pickup device for magneto-optical disc reproducing system | |
| JPS63244323A (en) | Optical card recording and reproducing method | |
| US6249493B1 (en) | Recording or replay device and method for recognition of a focussing status | |
| JP2647877B2 (en) | Magneto-optical card recording / reproducing device | |
| JPH051535B2 (en) | ||
| JPH0287337A (en) | Optical head | |
| JPH02206037A (en) | Optical recording and reproducing device | |
| JPS58137142A (en) | Optical head actuator | |
| JP2580987B2 (en) | Optical writing and reading device | |
| JP4160160B2 (en) | Optical head device | |
| JP2862254B2 (en) | Actuator for multi-beam optical head | |
| JP2792267B2 (en) | Light head | |
| JP4100397B2 (en) | cartridge | |
| JPS6120659Y2 (en) | ||
| JPS62128034A (en) | Optical head for photomagnetic disc | |
| JPH02195521A (en) | Information recorder | |
| JPH11250489A (en) | Optical pickup optical system | |
| KR930012146B1 (en) | Recording or/and play-back device of optical tape | |
| JP2843154B2 (en) | Optical head | |
| JPH01319145A (en) | Optical recording medium driving device | |
| JPS63117334A (en) | Optical information reproducing device | |
| JPH08306051A (en) | Optical information recording and reproducing device |