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91. 发明专利

JPS5897139A OPTICAL SPOT CONTROLLING SYSTEM 失效
公开(公告)号：JPS5897139A
公开(公告)日：1983-06-09
申请号：JP19452281
申请日：1981-12-04
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , TAKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , UNO MOTOO
IPC分类号： G11B7/085
摘要： PURPOSE:To detect the middle point between tracks and to make jump operation of an optical spot stable, by detecting the peak point of a total reflected luminous amount from a disc and switching the polarity of a control signal driving the optical spot at the peak point. CONSTITUTION:In a digital optical disc, the jump operation shifting the optical spot from a guide groove to a guide groove in a short time where recorded parts and nonrecording part are mixed, is made stable, and the average value of the reflected luminous amount from the recorded track is a half the nonrecording track, and although a track shift detecting signal E1 is largely changed, the peak position of a total reflected luminous amount E2 is unchanged. Thus, to detect the middle point between the tracks, this peak point is detected and denoted as a switching timing point for acceleration and deceleration, and to improve the stability of jump, the optical spot is once positioned at the middle point of the tracks and led to the objective track.

92. 发明专利

JPS5368388A FLUID SERVOODEVICE 失效
公开(公告)号：JPS5368388A
公开(公告)日：1978-06-17
申请号：JP14227476
申请日：1976-11-29
申请人： HITACHI LTD
发明人： UNO MOTOO
IPC分类号： F15B9/09 , F15B9/00
摘要： PURPOSE:To move smoothly at high speed and to position with high accuracy, by means of both placing a control valve which operates velocity controlling and has gain characteristic of large capacity and high flow qwantity, and a control valve which operates positioning controlling and has gain characteristic of small capacity and low flow qwantity.

93. 发明专利

JPS536890A CONTACT SENSOR 失效
公开(公告)号：JPS536890A
公开(公告)日：1978-01-21
申请号：JP8092376
申请日：1976-07-09
申请人： HITACHI LTD
发明人： TAKEYASU KIYOO , UNO MOTOO , KASAI MASUO , SHIMOMURA YUKIJI
IPC分类号： G01L1/04 , G01V9/00 , H01H13/18 , H01H35/00

94. 发明专利

JPH1069653A OPTICAL DISK DEVICE 失效
公开(公告)号：JPH1069653A
公开(公告)日：1998-03-10
申请号：JP18796797
申请日：1997-07-14
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOJI , TAKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA NORIYA
IPC分类号： G11B7/085 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To perform exact recording/reproduction by driving a first actuator to decrease the movement of a second actuator required for following up a track with a light beam while being linked with the detected movement. SOLUTION: This device uses a first actuator 312 (position control means) having a wide movable range and a second actuator 230 (position control means) having a narrow movable range but high responsiveness and the positioning accuracy unattainable by only one actuator is realized by linking two actuators with each other. At this time, a problem of linkage of two actuators arises, but, in this device, the movement of a light spot is detected by the second actuator 320 for highly accurate positioning and the first actuator 312 is driven linked with the movement.

95. 发明专利

JPH09134531A INFORMATION MEMORY APPARATUS 失效
公开(公告)号：JPH09134531A
公开(公告)日：1997-05-20
申请号：JP27325596
申请日：1996-10-16
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOJI , TAKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA NORIYA
IPC分类号： G11B7/085 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To accurately form a spot close to a diffraction limit and correctly record/reproduce information, by controlling with the use of an inexpensive and light-weight lens so that light beams pass the vicinity of a center of a lens of an optical head at all times at the tracking time. SOLUTION: The apparatus has an optical head for shedding laser beam onto an optical disk 3, a tracking signal formation means indicating a shift of a spot from a track based on an output of a photodetecting means detecting a reflecting light from the optical disk 3, a first driving means 320 for moving the optical head, a second driving means 312 for tracing the track in accordance with a tracking signal and moving a lens in parallel to a surface of the optical disk 3 to move the spot, and a detection means for detecting the movement of the second driving means 312 when the second driving means 312 operates and outputting a signal. The first driving means 320 moves the optical head in accordance with an output of the detection means so as to reduce the shift of the spot moved by the second driving means 312 while the second driving means 312 traces a required track. Accordingly, the track is traced by the optical head following the movement of the driving means 312.

96. 发明专利

JP2591344B2 失效
公开(公告)号：JP2591344B2
公开(公告)日：1997-03-19
申请号：JP7962091
申请日：1991-04-12
申请人： HITACHI LTD
发明人： MYAUCHI TOSHIMITSU , MAEDA TAKESHI , SUGYAMA TOSHIO , UNO MOTOO , YONEZAWA SEIJI , KAMEYAMA TADAHIKO , KANEDA NORYA
IPC分类号： G11B7/00 , G11B7/005 , G11B7/09

97. 发明专利

JP2585645B2 失效
公开(公告)号：JP2585645B2
公开(公告)日：1997-02-26
申请号：JP29553187
申请日：1987-11-24
申请人： HITACHI LTD
发明人： KAJI RYOKICHI , UNO MOTOO , ISHIGURO AKITO , WAKASA YASUYUKI
IPC分类号： G07D9/00 , B65H3/32

98. 发明专利

JP2577779B2 失效
公开(公告)号：JP2577779B2
公开(公告)日：1997-02-05
申请号：JP16500188
申请日：1988-07-04
申请人： HITACHI LTD
发明人： ISHIGURO AKITO , USHIZAKA HIROYUKI , UNO MOTOO , KAJI RYOKICHI
IPC分类号： G07D9/00 , B65H3/32 , B65H31/30 , B65H33/02

99. 发明专利

JPH08263857A ACCESS METHOD AND OPTICAL DISK DEVICE 失效
公开(公告)号：JPH08263857A
公开(公告)日：1996-10-11
申请号：JP1861896
申请日：1996-02-05
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , UNO MOTOO , MURAOKA KOJI , TAKASAGO MASAHIRO , MIZOGUCHI YASUMITSU , KANEDA NORIYA
IPC分类号： G11B7/09
摘要： PURPOSE: To precisely record/reproduce it by detecting the direction that a light spot passes through a track and the number of passing tracks and adding/ subtracting the number of passing tracks according to the passing direction. CONSTITUTION: A jump start circuit 215 sends out a polarity signal of jump to a jump waveform generation circuit 216, and generates a pulse for jump starting by the number of jump pieces at a specified time interval. The jump waveform generation circuit 216 receives the pulse, and generates a start signal D for jumping according to the jump polarity signal. When the place where the address inside of the position controlled track is read out when access is ended is different from a target track, when a difference between the track read out at present and the target track is smaller than a certain set number, the light spot is moved to the target track by repeating the jump.

100. 发明专利

JPH08192130A WASTE TREATMENT METHOD AND APPARATUS FOR HOUSE 失效
公开(公告)号：JPH08192130A
公开(公告)日：1996-07-30
申请号：JP549295
申请日：1995-01-18
申请人： HITACHI LTD
发明人： ODA MAKOTO , NAGANO YOSUKE , ENOKI HIDEO , UNO MOTOO
IPC分类号： B09B3/00 , C05F9/00 , C05F9/02 , C08L101/16
摘要： PURPOSE: To provide a waste treatment method and apparatus for house which treat mixed waste of garbage and waste biodegradative plastics in house, improve treatment capacity, and make maintenance easy. CONSTITUTION: Waste treatment apparatus 1 for house is equipped with a crushing means 4 for crushing mixed waste of garbage 2 and waste biodegradative plastics 3, a solid-liquid separation means 5 for separating solid from liquid, and a biological waste treatment means 6 for treating solid waste separated by the means 5 by mixing, agitation, and decomposition. In this way, mixing the plastics with garbage facilitates the maintenance of an optimum environment for the activity of microorganisms so that a waste treatment capacity improves, a compost production term can be elongated, and maintenance is made easy.

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