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1. 发明专利

JPS62124667A DISK DEVICE 失效
公开(公告)号：JPS62124667A
公开(公告)日：1987-06-05
申请号：JP26436085
申请日：1985-11-25
申请人： HITACHI ELECTR ENG , HITACHI LTD
发明人： SUGIHARA IWAO , KUROSAKI TAKASHI , MORI TAISUKE , MIYAZAWA YOSHIYUKI
IPC分类号： G11B17/26
摘要： PURPOSE:To prevent a system from breaking down, which is caused by an erroneous door opening operation, and disk media from being missed and stolen by providing a door lock mechanism interlocking with the rotation of a storing box and operation the door lock mechanism. CONSTITUTION:In normal operation, the storing box 10 is held at the 1st angle position, and rotated at the 2nd angle position at the time of replacing a disk medium. Then the opening surface of the storing box 10 is confronted with the door 13 of a device case. The door lock mechanism 20 interlocking with the rotation of the storing box 10 is provided, and locks the door 13 when the storing box 10 lies at any angles except for the 2nd angle position to make the opening operation of the door 13 impossible. When the storing box 10 lies at the 2nd angle position, the lock of the door 13 is released to make the opening operation of the door 13 possible. Thus, without instructions the door 13 is never mistakingly opened in normal operation, and the system breakdown due to the door opening operation can be prevented. Besides, the disk medium is hardly missed and stolen.

2. 发明专利

JPS60140559A CONTROL METHOD OF MAGNETIC TAPE DEVICE 失效
公开(公告)号：JPS60140559A
公开(公告)日：1985-07-25
申请号：JP24548883
申请日：1983-12-28
申请人： HITACHI LTD
发明人： YAMAGATA HIROTAKE , OKA TAKASHI , MIYAZAWA YOSHIYUKI , NANBA TATSUO
IPC分类号： B65H23/18 , G11B15/46
摘要： PURPOSE:To allow a device to display always a predeterminate capacity and perform a stable operation even in case of high-speed driving, by compensating variance of characteristics of a reel driving system to secure a prescribed driving state for a magnetic tape in the magnetic tape device of the reel-to-reel system. CONSTITUTION:A logic control part 1 obtains the number of pulses of a signal 118, namely, an extent of movement of the tape per rotation of reel motors 3 and 4 in accordance with rotation detection pulses 112 and 114 and the tape movement extent detection pulse signal 118 and calculates radiuses of the tape wound around reels 7 and 8 on a basis of this extent of movement of the tape and reads out control characteristic data, which correspond to calculated radiuses, from a control memory 14 and determines fundamental driving quantities for motors 3 and 4 in accordance with the tape speed and transmits them to a correction calculating part 2 as a digital driving control signal 102. The correction calculating part 2 determines and holds a correcting value of the motor driving quantity during tape loading and corrects the digital driving control signal 120 given from the logic control part 1 and outputs final motor driving quantity data 104 and 105 to DA converters 11 and 12.

3. 发明专利

JPH0798945A SEEKING SYSTEM FOR DISK RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH0798945A
公开(公告)日：1995-04-11
申请号：JP24267393
申请日：1993-09-29
申请人： HITACHI LTD
发明人： MIYAZAWA YOSHIYUKI , YAMAZAKI SHIGEKI
IPC分类号： G11B21/08
摘要： PURPOSE:To eliminate the influence of a count error by the revolution of a disk medium in a seeking period in a system which uses the disk medium provided with a spiral track and positions a head at the targeted position of a targeted track by counting the number of tracks on which the head traverses in seeking. CONSTITUTION:Figure is a head locus figure for a disk plane when the spiral tracking direction(oblique continuous line) coincides with a head seeking direction(oblique dotted line), and the number of tracks from the present head position 76 to the targeted position 72 is set as. for example, 6+alpha (0

4. 发明专利

JPH05314621A OPTICAL DISK DRIVING DEVICE 失效
公开(公告)号：JPH05314621A
公开(公告)日：1993-11-26
申请号：JP11335692
申请日：1992-05-06
申请人： HITACHI LTD
发明人： MIYAZAWA YOSHIYUKI
IPC分类号： G11B17/26
摘要： PURPOSE:To attain the high speed of a medium exchange in the optical disk driving device to be mounted by a loader mechanism in the optical disk device and its operation system at the optical disk provided with an automatic medium carrying mechanism. CONSTITUTION:An optical disk device 1 equipped with an automatic carrier is provided with the automatic carrying mechanism part 4 of an optical disk medium 3 for moving the medium 3 between a built-in storing house 2 and an optical disk driving device 5. Two medium holding parts are provided on the loader mechanism part of the driving device 5 and after a new medium is inserted into the empty medium holding part at the time of exchanging a medium, taking an unnecessary medium out of the other medium holding part is carried out. Thus, the mechanism part is simpified, its weight is reduced, its reliability is improved and its manufacturing cost is reduced.

5. 发明专利

JPS6366758A ABNORMALITY RECOVERING SYSTEM FOR OPTICAL DISK AUTOMATIC LOADING DEVICE 失效
公开(公告)号：JPS6366758A
公开(公告)日：1988-03-25
申请号：JP20949886
申请日：1986-09-08
申请人： HITACHI LTD
发明人： MIYAZAWA YOSHIYUKI
IPC分类号： G11B17/22 , G11B19/02
摘要： PURPOSE:To execute an abnormality recovery processing in a short time by always storing an original store place of an optical disk by a control part and backing it up by a battery source, and adding a function for returning the optical disk to its original position after an abnormality has been generated. CONSTITUTION:An optical disk automatic loading device 1 contains an optical disk 3 in a store case 2 having an address, and executes carrying of the optical disk 3 to a driving device 5 by a carrying mechanism part 4. A control part 9 is connected to a storage part 8 to which a power source is supplied by a battery 7, and stores a store address of the optical disk 3 existing on the way of carrying and in the driving device. When a confirmation of an abnormal phenomenon or its cause is ended and a switch 12 is operated, the control part 9 gives a command to the carrying mechanism part 4 by information of the storage part 8 and returns the optical disk to its original store place. In this way, after an abnormality has been generated, the optical disk 3 can be returned to the store case 2 in a short time, and also, since the optical disk 3 corresponds to the same address as before the abnormality is generated, in the store case 2, it is unnecessary to change newly management information of the optical disk 3 in the store case 2, and the recovery time after the abnormality has been generated can be shortened.

6. 发明专利

JPS61126654A Reel size detecting system of magnetic tape 失效
标题翻译：磁带卷尺检测系统
公开(公告)号：JPS61126654A
公开(公告)日：1986-06-14
申请号：JP24442184
申请日：1984-11-21
申请人： Hitachi Ltd
发明人： MIYAZAWA YOSHIYUKI
IPC分类号： G11B15/43
摘要： PURPOSE: To wind a tape with a standard quantity or below, to detect correctly the reel size and to control an ordinary travelling by measuring a tape quantity wound to the reel and a tape tension change at the time of increasing and decreasing the speed of the tape tension change.
CONSTITUTION: When a supplying reel 1 accelerates a tape 10 by a full reel in the (a) direction of an arrow, a control device 12 mistakes the reel for a half reel, a driving electric current is supplied to a supplying reel motor 3, and then, a winding reel 2 winds at a prescribed speed regardless of the size of the reel 1 and the tension of the tape 10 is increased. On the other hand, when the tape is accelerated in the (b) direction of an arrow, the tension of the tape 10 is increased, and the phenomenon occurs in the same manner at the time of decelerating. Thus, first, reels 1 and 2 are rotated, a tape travelling distance during the rotation of the reel 1 is measured, the reel size is recognized, and next, the accelerating and decelerating of the prescribed frequency are repeated, the change of the tape tension is executed at a monitoring tension sensor 8. When the change is overshot from the prescribed value, the reel size is increased to one step and a detecting action is completed within the prescribed value.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了卷起标准数量或以下的胶带，可以正确检测卷轴尺寸，并通过测量缠绕在卷轴上的胶带数量和在增加和降低卷筒纸速度时的带张力变化来控制普通行驶胶带张力变化。构成：当供带盘1沿（a）方向的箭头方向以全卷轴加速带10时，控制装置12将卷轴误认为半卷轴，驱动电流被提供给供带盘马达3，然后，无论卷筒1的尺寸如何，卷绕卷轴2以规定的速度卷绕，并且带10的张力增大。另一方面，当沿箭头的（b）方向加速带时，带10的张力增加，并且在减速时以相同的方式发生现象。因此，首先，卷轴1和2旋转，测量卷轴1的旋转期间的带行进距离，卷轴尺寸被识别，接下来，重复规定频率的加速和减速，带的改变在监视张力传感器8处执行张力。当从规定值超过变化时，卷轴尺寸增加到一步，并且在规定值内完成检测动作。

7. 发明专利

JPS59148175A Change suppressing system for magnetic tape tension 失效
标题翻译：磁带张力变更抑制系统
公开(公告)号：JPS59148175A
公开(公告)日：1984-08-24
申请号：JP2146883
申请日：1983-02-14
申请人： Hitachi Ltd
发明人： MIYAZAWA YOSHIYUKI
IPC分类号： B65H23/18 , G11B15/43
CPC分类号： G11B15/43
摘要： PURPOSE:To prevent the change of tape tension which is produced during the start acceleration by correcting the reel driving current with a required correcting current when the tape starts traveling. CONSTITUTION:When a tape starts traveling, the driving currents for feed and take-up reels are corrected by performing the subtraction/addition between a steady current and a correcting current IE corresponding to the tension reduction due to the static friction of a stop mode or acceleration. As a result, the change of tape tension which is caused by a transient phenomenon generated in a start/acceleration mode.
摘要翻译：目的：通过在磁带开始行驶时以所需的校正电流校正卷轴驱动电流，防止在启动加速期间产生的胶带张力的变化。构成：当磁带开始行驶时，通过执行与由于停止模式的静摩擦引起的张力减小相对应的稳定电流和校正电流IE之间的减法/加法来校正进给和卷取卷轴的驱动电流，或加速。结果，由起动/加速模式中产生的瞬态现象引起的带张力变化。

8. 发明专利

JPH06162521A METHOD FOR CORRECTING SEEK STROKE OF MAGNETO-OPTICAL DISK 失效
公开(公告)号：JPH06162521A
公开(公告)日：1994-06-10
申请号：JP30514792
申请日：1992-11-16
申请人： HITACHI LTD
发明人： YAMAZAKI SHIGEKI , MIYAZAWA YOSHIYUKI
IPC分类号： G11B7/085 , G11B11/10 , G11B11/105 , G11B21/08
摘要： PURPOSE:To allow access to a target track in one seek without reseeking and to shorten seeking time by detecting the address boundary of cross-cutting track and correcting the number of seek strokes. CONSTITUTION:In the case of a seek method in which the number of cross-cutting tracks is counted and positioning to a target track is made, an INDEX pulse is outputted so as to be outputted at the address boundary of the cross-cutting track CVRSCT #0, and the number of the seek strokes is corrected through the number of times of the generation during the seek operation. Then, the crossing of a track which is generated by rotation is detected by the crossing pulse 18 of rotating track, which is transmitted to a circuit 27 for changing counter value of a seek completion, the counter value of the seek completion is changed and transmitted to a circuit 26 for detecting the seek completion.

9. 发明专利

JPS62124669A DISK DEVICE 失效
公开(公告)号：JPS62124669A
公开(公告)日：1987-06-05
申请号：JP26436285
申请日：1985-11-25
申请人： HITACHI ELECTR ENG , HITACHI LTD
发明人： SUGIHARA IWAO , KUROSAKI TAKASHI , MORI TAISUKE , MIYAZAWA YOSHIYUKI
IPC分类号： G11B17/26
摘要： PURPOSE:To prevent a collision between a disk medium and a device enclosure and that between the disk medium and a medium handling mechanism by installing a pushing member inside a door and pushing the disk medium from an opening surface into a storing box through the engagement with the pushing member in the middle of the turn of the storing box. CONSTITUTION:When the disk medium is pulled out of the storing box through the door 13 installed on the device enclosure to the outside, or stored in the storing box 10 from the out-side, drive mechanisms 14 and 16 turn the opening surface of the storing box 10 to the 1st angle position facing the door 13 of the device enclosure. The pushing member 66 is installed inside the door 13. While the storing box 10 is turning from the 1st angle position to the 2nd one, the disk medium excessively projecting from the opening surface of the storing box 10 is pushed into the storing box 10 through the engagement with the pushing member. Since the disk medium is sufficiently pushed into the storing box 10 by the pushing member, the collision between the disk medium and the device enclosure and that between the disk medium and the medium handling mechanism 20 never occur, and their damages can be prevented accordingly.

10. 发明专利

JPS62124666A DISK DEVICE 失效
公开(公告)号：JPS62124666A
公开(公告)日：1987-06-05
申请号：JP26435985
申请日：1985-11-25
申请人： HITACHI ELECTR ENG , HITACHI LTD
发明人： SUGIHARA IWAO , KUROSAKI TAKASHI , MORI TAISUKE , MIYAZAWA YOSHIYUKI
IPC分类号： G11B17/26
摘要： PURPOSE:To attain the smooth carry in and out and to uniformly diversify the load of a drive roller by constituting such that pushing the drive roller, a carry in and out mechanism synchronizingly rotating and driving the roller at the same peripheral speed can carry in and out a disk medium. CONSTITUTION:The titled device has a storing part 10 which arranges plural disk media stored in a case so as to take out and stores then, and a medium handling mechanism 20 which carries in and out disk media at least between the storing part and a holding member and conveys them while holding them on a disk medium holding member. The medium handling mechanism 20 is constituted so that pressing the drive rollers 40A-40D against two facing sides of the case in the disk medium, the carry in and out mechanism synchronizingly rotating and driving at the same peripheral speed can carry in and out disk media. Thus load is uniformly diversified to the drive roller at each side of the disk medium, and the disk medium hardly tilts, whereby the drive roller seldom has wear and its life can be prolonged.

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