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1. 发明专利

JPH1139454A OPTICAL FIBER CARD 失效
公开(公告)号：JPH1139454A
公开(公告)日：1999-02-12
申请号：JP19130697
申请日：1997-07-16
申请人： NIPPON CONLUX CO LTD , EMPIRE AIRPORT SERVICE
发明人： NODA KAZUO
IPC分类号： G02B6/00 , G06K19/06 , G06K19/08 , G06K19/10
摘要： PROBLEM TO BE SOLVED: To disable an optical fiber to easily be put back into an optical transmission state and to reduce the possibility of forgery by providing polarization plane maintaining optical fibers which are so constituted as to rotate the planes of polarization of incident lights as the lights propagation, and recording information by cutting them partially. SOLUTION: The polarization plane maintaining optical fibers 3 are twisted so that when lights in single mode are transmitted, the planes of polarization of the transmitted lights rotated as the lights propagation and then embedded in the optical fiber card 1 curvedly nearby the position where punch holes 5-1 and 5-2 are bored so as to put the optical fibers in an optical nontransmission state. Even when the punch holes bored in this card 1 are filled with optically transmitting substance such as a transparent optical UV adhesive, this card 1 has the polarization plane maintaining optical fibers 3 twisted and embedded, so the lights which are projected from the optical fibers 3 and transmitted into the optically transmitting substance filling the punch holes is never made incident again since its plane of polarization is not matching.

2. 发明专利

JPH10233057A DEVICE FOR RECORDING AND REPRODUCING INFORMATION OF OPTICAL RECORDING MEDIUM AND METHOD THEREFOR 失效
公开(公告)号：JPH10233057A
公开(公告)日：1998-09-02
申请号：JP5099297
申请日：1997-02-19
申请人： NIPPON CONLUX CO LTD
发明人： NODA KAZUO
IPC分类号： G06K19/06 , G06K17/00 , G11B7/00 , G11B7/004 , G11B20/10 , G11B20/12 , G11B33/10
摘要： PROBLEM TO BE SOLVED: To exclude influence of a reproducing error owing to dirt and a flaw on a recording surface and to judge the presence of only actual falsification as accurately as possible by operating exclusive-OR between regular recording information subjected to error correction and its inverted information. SOLUTION: The exclusive-OR operation is performed between the error corrected regular recording information and the inverted information in every one bit corresponding to each other. If the regular information and the inverted information have a completely inverted relationship to each other, a result of the exclusive-OR of each bit of them is every 1. On the other hand, if inverted relationship between the two bits of information is degenerated, a result of at least one exclusive-OR becomes 0. Then, whether the result of the exclusive-OR obtained in the previous step has 0 or not is examined. If not (NO), no falsification of the recording information is judged, and the error corrected regular recording information is outputted as reproducing data. On the other hand, if so (YES), falsification of the recording information is judged to be in existence.

3. 发明专利

JPH08171722A OPTICAL INFORMATION RECORDING AND REPRODUCING METHOD AND DEVICE 失效
公开(公告)号：JPH08171722A
公开(公告)日：1996-07-02
申请号：JP33490394
申请日：1994-12-19
申请人： NIPPON CONLUX CO LTD
发明人： NODA KAZUO , YAMAZAKI KOUICHI , YOSHIDA HIROAKI
IPC分类号： G11B7/00 , G11B7/0033 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/125 , G11B7/126
摘要： PURPOSE: To miniaturize a driving system by using a card-like recording medium formed with plural recording tracks in parallel and executing recording and reproducing of information while relatively moving the recording medium and an optical head back and forth. CONSTITUTION: A movement control section 12 controls driving of linear motors 5a and 5b and moves a carriage 4 on which the optical card 1 is placed back and forth in a direction X. A recording control section 13 is inputted with speed detection pulses SDP outputted from linear encoders 6a, 6b and controls the generation timing of the light beam emitted from an optical head 7 in correspondence to the information to be recorded and the intensity (power) of this light beam according to a change in the relative moving speeds in the direction X. As a result, the information is adequately recordable in the acceleration region and the deceleration region and the driving system is miniaturized.

4. 发明专利

JPH04222451A LINEAR MOTOR 失效
公开(公告)号：JPH04222451A
公开(公告)日：1992-08-12
申请号：JP8462991
申请日：1991-03-25
申请人： NIPPON CONLUX CO LTD
发明人： YAMAZAKI KOUICHI , NODA KAZUO , NAKAMURA EIICHI
IPC分类号： H02K33/18
摘要： PURPOSE:To realize efficient acceleration/deceleration control by setting the magnetic force at the opposite ends of a linear air gap higher than that at the intermediate part and to reduce the size of yoke by preventing magnetic saturation at the opposite ends thereof. CONSTITUTION:A linear motor comprises permanent magnets 26, 27 for forming a unilateral field in a linear air gap so that flux is produced on the inside of U-type yokes 25a', 25b' while traversing a movable coil 28. When the permanent magnet 26 is composed, at the opposite ends 261, 263 thereof, of samarium cobalt magnets having higher magnetic force than a ferrite magnet, a strong thrust(reverse thrust) against acceleration(deceleration) is obtained at the opposite ends. The constant speed part, i.e., the central part, of the permanent magnet 26 is composed of a ferrite magnet 262 having weaker magnetic force than the samarium cobalt magnet thus reducing the profile of the yoke.

5. 发明专利

JPH03142720A OPTICAL HEAD FOR RECORDING AND REPRODUCING OPTICAL INFORMATION 失效
公开(公告)号：JPH03142720A
公开(公告)日：1991-06-18
申请号：JP28216789
申请日：1989-10-30
申请人： NIPPON CONLUX CO LTD
发明人： NODA KAZUO , NAKAMURA EIICHI
IPC分类号： G11B7/09 , G11B7/13 , G11B7/135 , G11B7/1362 , G11B7/1381
摘要： PURPOSE:To prevent crosstalk from being generated even when a convergent lens is driven for tracking by taking out a focusing control signal by using an edge mirror and a two-divided light receiving diode. CONSTITUTION:Three 0th and + or -1st order light beams are reflected on a recording medium 12, converged on a convergent lens 10, splitted by a beam splitter 7 and narrowed down by a light receiving lens 13 and an edge mirror 19 is inserted in the almost middle of these three beams so as to straightly advance the half of the 0th order diffracted light and the +1st order diffracted light and to reflect the remained half of the 0th order diffracted light and the -1st order diffracted light on the edge mirror. The straightly advanced light and the reflected light is received by light receiving diodes 20 and 21. The focusing control signal and an information signal can be obtained by synthesizing the light receiving outputs of the respective 0th order diffracted beams or the light receiving outputs of the both 0th order diffracted beams and a tracking control signal can be obtained by differentially synthesizing the light receiving outputs of the +1st order diffracted beam and the light receiving output of the -1st order diffracted light. Thus, an optical head can be obtained without the crosstalk even when executing tracking by driving the convergent lens 10.

6. 发明专利

JPH01138619A OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH01138619A
公开(公告)日：1989-05-31
申请号：JP29384887
申请日：1987-11-20
申请人： NIPPON CONLUX CO LTD
发明人： KACHI KENJIRO , NODA KAZUO
IPC分类号： G11B11/03 , G11B7/00 , G11B7/0033 , G11B20/16
摘要： PURPOSE:To attain the recording and reproducing of the high density and the large capacity of an optical card by providing separately a common clock track able to be reproduced optically and magnetically and removing the clock track from an information recording surface. CONSTITUTION:An information recording part 2 and a tracking track 4 are formed alternately and at an equal interval on the information recording surface of an optical card 1. On the arbitrary position of the card 1, a single or plural common optically detectable clock tracks 7 or magnetically detectable clock tracks 8 are provided. For the recording part 2, while a tracking signal is reproduced from the track 4 with an optical head, the recording and reproducing of the information are executed and for the clock signal, an optical head for reproducing a separate clock signal is always reproduced from tracks 7 and 8. Thus, by providing separately the clock track, the high density and the large capacity of the optical card can be executed.

7. 发明专利

JPH01125732A METHOD AND DEVICE FOR RECORDING AND REPRODUCING INFORMATION 失效
公开(公告)号：JPH01125732A
公开(公告)日：1989-05-18
申请号：JP26621287
申请日：1987-10-23
申请人： NIPPON CONLUX CO LTD
发明人： KACHI KENJIRO , NODA KAZUO
IPC分类号： G11B7/0033 , G11B7/09 , G11B7/13 , G11B7/14
摘要： PURPOSE:To increase recording capacity by making a reflected beam from an optical information recording medium of a recording and reproducing light spot and plural tracking light spots incident on a photodetector and selecting two outputs out of plural tracking electric outputs from the photodetector to generate a tracking control signal. CONSTITUTION:Plural spots for recording/reproducing and tracking information are projected on an optical information recording medium to record information on an information track 2. Plural information tracks 6 are formed between two guide tracks 2 on the optical information recording medium, and the reflected light from each track is detected by a photodetector to reproduce information. A photodetector 20 consists of one information detecting element and plural pairs of track follow-up elements, and one pair of track follow-up elements are selected, and signals from these selected elements are used to perform the tracking control. When another pair of track follow-up elements are selected, the information detecting element reads out information from another information track. Thus, the recording capacity is increased without changing an optical card.

8. 发明专利

JPH11191280A DRIVING METHOD FOR OPTICAL CARD, OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH11191280A
公开(公告)日：1999-07-13
申请号：JP37020697
申请日：1997-12-25
申请人： NIPPON CONLUX CO LTD
发明人： NODA KAZUO
IPC分类号： G11B25/04 , G11B7/00 , G11B7/0033 , G11B19/00 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To increase speed of recording and reproducing information in/from an optical card, to miniaturize a driving mechanism of an optical card, to reduce power consumption, to prevent occurrence of vibration of a driving section, and to reduce a manufacturing cost of a device. SOLUTION: Optical cards 11, 12 in which plural tracks are arranged in parallel and straightly are cascaded and plural sheets are wound on a cylinder 8 so that the tracks are extended along a circumference direction and end parts of the optical cards 11, 12 are contacted without a gap respectively. By rotating this cylinder 8 in the one direction, plural sheets of optical cards 11, 12 are moved relatively for an optical head for recording or reproducing information, information is recorded in this track or information is reproduced from this track.

9. 发明专利

JPH1166573A METHOD AND APPARATUS FOR RECORDING REPRODUCING OPTICAL INFORMATION 失效
公开(公告)号：JPH1166573A
公开(公告)日：1999-03-09
申请号：JP21475797
申请日：1997-08-08
申请人： NIPPON CONLUX CO LTD
发明人： KIMURA YASUYUKI , KOJIMA SUSUMU , NODA KAZUO
IPC分类号： G06K19/06 , G11B7/0033 , G11B7/085
摘要： PROBLEM TO BE SOLVED: To prevent an information record capacity of an optical card from being reduced or a recording reproduction time from being increased due to a track jump action, by effecting the track jump action at a section where the optical card relatively moves to an optical head at a constant speed when a relative travel speed of the optical card is accelerated or decelerated. SOLUTION: When a relative travel speed of an optical card 500 reaches a predetermined speed, an MPU 512 applies a constant speed pulse to an x- directional driving motor 516. As a result, an optical head 514 records, reproduces information when the optical card becomes a constant speed. When a beam spot reaches a predetermined position of the optical card, a deceleration pulse is applied to the x-directional driving motor. A travel direction of the optical card is switched when the relative travel speed of the optical card is 0, and then an acceleration pulse is applied to accelerate the optical card to the predetermined speed. When the optical card shows the constant speed with the application of the constant speed pulse, an AF/AT control circuit 518 opens a control loop and a track jump circuit 517 applies a track jump pulse to an actuator.

10. 发明专利

JPH07169067A METHOD AND APPARATUS FOR SEEKING TRACK OF OPTICAL INFORMATION RECORDER/REPRODUCER 失效
公开(公告)号：JPH07169067A
公开(公告)日：1995-07-04
申请号：JP34092193
申请日：1993-12-10
申请人： NIPPON CONLUX CO LTD
发明人： YAMAZAKI KOUICHI , NODA KAZUO , YOSHIHARA KENZO
IPC分类号： G11B21/08 , G11B7/085
摘要： PURPOSE:To shorten a track seeking time by comparing and collating the number of track crossings counted based on a light reception signal to a predetermined reference value corresponding to this movement distance, and correcting the counted value of the number. CONSTITUTION:When movement of an optical head 2 at a predetermined distance is detected based on a linear still detection signal D, a comparison command signal COM is given, and counted value data Na of a section counter 31 is compared with a reference value Nb. When Na>Nb, the detected number Na of track crossing is larger by (Na-Nb) than that of normal case, and hence correction data Nc indicating its difference Nc=Nb-Na (negative value) is generated. A correction pulse generator 33 generates an addition mode designation signal ADD in response to a negative code of the data Nc, and generates correction pulses Pc of the number corresponding to the absolute value of the data Nc. Thus, a total counter 34 does a correction to count and cummulate (Na-Nb) pulses.

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