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1. 发明专利

DE3278981D1 OPTICAL MEMORY APPARATUS 未知
公开(公告)号：DE3278981D1
公开(公告)日：1988-10-06
申请号：DE3278981
申请日：1982-11-25
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOUJI , TKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA TOKUYA
IPC分类号： G11B7/08 , G11B7/085 , G11B7/09 , G11B17/00 , G11B27/00
摘要： An optical memory apparatus wherein predetermined information is optically recorded on a recording medium along guide grooves previously formed and then played back, comprises: projecting means for projecting a laser beam on the recording medium, light reception means for receiving reflected light from the recording medium, means for generating a tracking error signal on the basis of an output from the light reception means, first means [26(a)], for enveloping upper an information signal [512] obtained from the light reception means, second means [202] for generating a signal corresponding to the direction of passage each time the light beam passes through the guide groove, on the basis of the output from said first means and the tracking error signal, third means [203 - 209] for detecting a difference between the guide groove where the light beam exists and a target guide groove on the basis of the output from said second means and for generating a first control signal for controlling the position of the light beam in correspondence with said difference, light beam position-control means [1, 210,251] for bringing the light beam near to the target guide groove in response to the first control signal.

2. 发明专利

DE3279453D1 ACCESS DEVICE FOR POSITIONING A LIGHT BEAM TO A DESIRED GUIDE GROOVE OF AN OPTICAL MEMORY APPARATUS 未知
公开(公告)号：DE3279453D1
公开(公告)日：1989-03-23
申请号：DE3279453
申请日：1982-11-25
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOUJI , TKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA TOKUYA
IPC分类号： G11B7/08 , G11B27/00

3. 发明专利

CA1196098A OPTICAL MEMORY APPARATUS 未知
公开(公告)号：CA1196098A
公开(公告)日：1985-10-29
申请号：CA416313
申请日：1982-11-25
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOUJI , TAKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA TOKUYA
IPC分类号： G11B7/00
摘要： : In an optical memory apparatus predetermined information is optically recorded on a recording medium along guide grooves previously formed and can then be played back. The invention is concerned with improvements in apparatus for accurately positioning the light beam at a desired target guide groove. Using a tracking signal and a signal indicating the quantity of reflected light at the time at which a projected light beam passes across the guide grooves, the directions in which the light beam passes across the guide grooves and the number of guide grooves to be passed are detected. Seek control is performed by adding and subtracting the numbers of the guide grooves to be passed, depending upon the directions of passage, and fine positioning is thereafter performed using this tracking signal. The invention provides high precision of accessing in a system that can have a track density one or two orders of magnitude higher than a conventional magnetic disc.

4. 发明专利

DE3245000A1 未知
公开(公告)号：DE3245000A1
公开(公告)日：1983-06-16
申请号：DE3245000
申请日：1982-12-06
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , TAKASAGO MASAHIRO
IPC分类号： G11B7/085 , G11B7/00 , H04N5/76
摘要： In a light spot control signal generating device, a light spot is irradiated on a recording medium having tracks on which information is recorded. In order to jump the light spot from a track being scanned thereby to an adjacent track, a signal representative of light quantity of reflection or transmission of the light spot and a track error signal are detected. The two signals are used to judge whether the light spot has passed through an edge of the track. The track error signal is also used to detect a signal representative of an instant at which the light spot is present at the middle point between adjacent tracks, and this signal is used as a timing signal for changing the polarity of a control signal applied to a spot light deflector.

5. 发明专利

AT36917T 未知
公开(公告)号：AT36917T
公开(公告)日：1988-09-15
申请号：AT82110907
申请日：1982-11-25
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOUJI , TKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA TOKUYA
IPC分类号： G11B7/08 , G11B27/00

6. 发明专利

DE3501609A1 未知
公开(公告)号：DE3501609A1
公开(公告)日：1985-07-25
申请号：DE3501609
申请日：1985-01-18
申请人： HITACHI LTD
发明人： TSUYOSHI TOSHIAKI , YONEZAWA SEIJI , KASAI MASUO , UNO MOTOO
IPC分类号： G11B7/013 , G11B7/09 , G11B7/095 , G11B21/10

7. 发明专利

DE3581589D1 未知
公开(公告)号：DE3581589D1
公开(公告)日：1991-03-07
申请号：DE3581589
申请日：1985-11-07
申请人： HITACHI LTD
发明人： UNO MOTOO , TAKEUCHI IKUO , HONMA KAZUO , SAKAI AKIHIKO
IPC分类号： F15B13/044 , F15B11/02 , F15B11/028 , F15B11/042 , F15B11/044 , G05D3/18 , G05D16/20 , F15B9/09
摘要： A control apparatus for an actuator (1) wherein actuator drivers (13, 23) of long rise time or dead time are connected to the actuator (1) in parallel with each other, and the phases of the carrier waves of a pulse width modulation input circuit (ee1, (ee2) for driving the drivers individually are shifted, whereby the frequency of a carrier wave is equivalently raised for the actuator so as to control it with quick response.

8. 发明专利

DE2753225A1 未知
公开(公告)号：DE2753225A1
公开(公告)日：1978-11-09
申请号：DE2753225
申请日：1977-11-29
申请人： HITACHI LTD
发明人： UNO MOTOO , IZUMI HISASHI
IPC分类号： B25J9/16 , B25J19/00 , B25J19/02 , F16D71/00 , F16F7/00 , F16F9/46 , F16F9/50 , G05D3/12 , G05D15/00 , G05D3/00
摘要： A shock absorber comprising a device for detecting the position and velocity of a moving object; a movement mechanism including a movable part, means for detecting the contact between the movable part and the object, and means for detecting the displacement value of the movable part; and a device for controlling the movement mechanism. With information from the position and velocity detecting device, the control device controls the movement mechanism so that the movable part may move on the course of the object and in the same direction as the moving direction thereof at a velocity corresponding to the velocity of the object. Subsequently, with an information from the contact detecting means, it reduces the velocity of the movable part on the basis of a predetermined deceleration pattern when the object has come into contact with the movable part. Further, with an information from the displacement value detecting means, it executes a positioning control so as to stop the movable part at a predetermined position when the displacement value of the movable part has reached a predetermined value.

9. 发明专利

JP2003047886A Liquid cyclone and gravity separation method 审中-公开
标题翻译：液体循环和重力分离方法
公开(公告)号：JP2003047886A
公开(公告)日：2003-02-18
申请号：JP2001238581
申请日：2001-08-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ARAKANE NOBUAKI , HAYASHI MASAKATSU , SATO EIJI , UNO MOTOO
IPC分类号： B04C5/12 , B03B5/28
摘要： PROBLEM TO BE SOLVED: To provide a structure capable of easily adjusting a downward drainage rate of a liquid cyclone which separates materials mixed with two kinds of the materials by each of the materials.
SOLUTION: The liquid cyclone is constituted by inserting a barrel-shaped inner cylinder 5 into an external cylinder 2 formed to a conical shape in its lower part and to a cylindrical shape in its upper part and discharges the specific gravity liquid flowing in from the upper part of the external cylinder from a lower opening 7 of the conical-shape section and the inner cylinder 5. The central axis of the lower opening 7 of the conical-shape section and the central axis of the inner cylinder 5 are offset, by which a lower drainage rate is changed. The inner cylinder and the lower opening are arranged in s positional relation where the mixture to be separated is higher in a separation rate, by which the desired the separation rate can be obtained.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供能够容易地调节通过每种材料分离与两种材料混合的材料的液体旋风分离器的向下排出速率的结构。解决方案：液体旋流器是通过将筒形内筒5插入其下部形成为圆锥形状的外筒2和其上部的圆柱形形状而排出从上部流入的比重液体外筒的一部分来自锥形部分的下开口7和内筒5.锥形部分的下开口7的中心轴线和内筒5的中心轴线偏移，排水率下降了。内筒和下开口以分离速度高的待分离的混合物的位置关系布置，由此可以获得期望的分离速率。

10. 发明专利

JP2002210417A SYSTEM AND METHOD FOR RECOVERING METAL SELECTIVELY 失效
公开(公告)号：JP2002210417A
公开(公告)日：2002-07-30
申请号：JP2001008393
申请日：2001-01-17
申请人： HITACHI LTD
发明人： MIYAMOTO TETSUO , TAKEDA FUMIO , HAYASHI MASAKATSU , UNO MOTOO
IPC分类号： B07C5/00 , B02C23/08 , B07B4/02 , B07B4/08 , B07B9/00 , B07B13/08 , B07B13/11 , B07C5/10 , B07C5/34 , B07C5/342 , B09B5/00
摘要： PROBLEM TO BE SOLVED: To provide a system and a method for selectively recovering a metal having high discrimination accuracy including that for crushed particle sizes. SOLUTION: This is a system characterized in comprising a particle size adjusting mechanism 1 for making particle sizes of crushed pieces 5 of wastes crushed by a crushing part and including metal pieces approximately as prescribed one and for exposing a feature color of a metal; a specific gravity selection device 2 for selecting the crushed pieces 5a adjusted to about the prescribed particle size by the particle size adjusting mechanism 1 by specific gravity differences; a substance discriminating device 3 for discriminating the crushed pieces 5a selected by the specific gravity selection means 2 into each kind of metal and non-metal; and a selectively recovering device 4 for selectively recovering each kind of metal and non-metal from the crushed pieces 5a based on the discrimination result of the substance discriminating device 3.

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