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41. 外观设计

USD538805S1 Cover portion for optical storage media tray 有权
标题翻译：光学存储介质托盘的盖部分
公开(公告)号：USD538805S1
公开(公告)日：2007-03-20
申请号：US29255587
申请日：2006-03-09
申请人： Masatoshi Takeda , Katsumi Ichinose , Masayuki Shiwa
设计人： Masatoshi Takeda , Katsumi Ichinose , Masayuki Shiwa

42. 发明申请

US20060005212A1 Frame for optical disk unit and the optical disk unit 失效
公开(公告)号：US20060005212A1
公开(公告)日：2006-01-05
申请号：US11171298
申请日：2005-07-01
申请人： Katsumi Ichinose , Masayuki Shiwa , Masatoshi Takeda
发明人： Katsumi Ichinose , Masayuki Shiwa , Masatoshi Takeda
IPC分类号： G11B17/03
CPC分类号： G11B17/05
摘要： A support frame for an optical disk unit where reduction in thickness and/or weight saving can be realized and the optical disk unit are intended to be obtained. In an optical disk drive unit, a support frame 2 has neither upper cover nor bottom cover, and is formed from a frame that continuously encloses both sides and a back of a disk tray 1 without any cutout portions in order to secure strength, and furthermore, the support frame 2 is manufactured by a die casting method using a metal material such as aluminum material, zinc material, and magnesium material, or by a press method using a metal sheet such as iron sheet, aluminum sheet, and magnesium sheet, or by composite molding using a polymer such as PPS (polyphenylenesulfide), POM (polyacetal), and LCP (liquid crystal polymer) with the metal sheet, or by a forging method using a metal material such as aluminum, thereby strength that prevents the optical disk drive unit as a whole from distorting or deforming during operation or actuation is secured.

43. 发明授权

US06465912B1 Power transfer device 失效
标题翻译：电力传输装置
公开(公告)号：US06465912B1
公开(公告)日：2002-10-15
申请号：US09656745
申请日：2000-09-07
申请人： Fuminori Nakamura , Shinzo Tamai , Isao Kamiyama , Masatoshi Takeda , Hiroshi Yamamoto , Yuji Kuroda
发明人： Fuminori Nakamura , Shinzo Tamai , Isao Kamiyama , Masatoshi Takeda , Hiroshi Yamamoto , Yuji Kuroda
IPC分类号： H02B100
CPC分类号： H02J3/005 , H02J9/061 , H02J2009/068 , Y10T307/647 , Y10T307/658 , Y10T307/735
摘要： A power transfer device includes a first current transferring section connected between a first AC power source and a load, a second current transferring section with first and second switches which have opposite conduction directions, connected in parallel, and connected between a second AC power source and the load; a current detector for detecting a current flowing from the first AC power source to the load; a generator for generating a power transfer signal instructing transfer from the first AC power source to the second AC power source; a current direction estimator for estimating the direction of a current which flows from the first AC power source to the load when the second current transferring section enters the conduction state after a time period; and a conduction signal generator for causing one of the first and second switches to be conductive, so that the current flowing from the first AC power source to the load is cancelled, and, thereafter, causing the other of the first and second switches to be conductive.
摘要翻译：电力传输装置包括连接在第一AC电源和负载之间的第一电流传输部分，具有相反导通方向的具有相反导通方向的第一和第二开关的第二电流传输部分，并联连接在第二AC电源和负载; 电流检测器，用于检测从第一AC电源流向负载的电流; 发电机，用于产生指示从所述第一AC电源向所述第二AC电源的转移的电力传送信号; 电流方向估计器，用于在第一电流传输部分在一段时间段之后进入导通状态时估计从第一AC电源流向负载的电流的方向; 以及导通信号发生器，用于使所述第一和第二开关中的一个导通，使得从所述第一AC电源流向所述负载的电流被消除，并且此后使所述第一和第二开关中的另一个为导电。

44. 发明授权

US4835411A Active filter unit 失效
标题翻译：有源滤波器单元
公开(公告)号：US4835411A
公开(公告)日：1989-05-30
申请号：US222729
申请日：1988-07-22
申请人： Masatoshi Takeda
发明人： Masatoshi Takeda
IPC分类号： G05F1/70 , H02J3/01
CPC分类号： H02J3/01 , Y02E40/40
摘要： An active filter unit comprising a first active filter which operates under low-frequency PWM control for controlling the fundamental and low-order harmonic capacity and a second active filter which operates under high-frequency PWM control for controlling the high-order harmonic capacity. The first and second active filters are connected in series through associated transformers that are in serial connection across the power lines. The divided filter arrangement reduces the required power rating of high-frequency switching devices.

45. 发明授权

US4540895A Device having thyristors connected in series 失效
标题翻译：具有串联连接晶闸管的装置
公开(公告)号：US4540895A
公开(公告)日：1985-09-10
申请号：US492490
申请日：1983-05-06
申请人： Masatoshi Takeda
发明人： Masatoshi Takeda
IPC分类号： G05F1/44 , G05F1/70 , H02J3/18 , H02M1/08 , H03K17/082 , H03K17/10 , H03K17/72
CPC分类号： H02M1/08 , G05F1/44 , H02J3/1864 , H03K17/0824 , H03K17/105 , Y02E40/12
摘要： A device comprising a series circuit consisting of a plurality of thyristors connected in series, and a reverse-blocking semiconductor element such as a diode connected in an antiparallel relationship to the series circuit. The device further includes means for detecting whether a sufficient turn-off time is secured for each of the thyristors anterior or posterior to a reference moment at the zero point of a current flowing in the diode, and means for turning on the entirety of the thyristors when the sufficient turn-off time is not secured. Since none of the thyristors is turned off in the state where the turn-off time is insufficient, it becomes possible with certainty to achieve exact prevention of a fault that one or more thyristors, turned off earlier than others are led to breakdown by an overvoltage.
摘要翻译：包括由串联连接的多个晶闸管组成的串联电路的装置以及与串联电路以反并联方式连接的反向阻挡半导体元件，例如二极管。该装置还包括用于检测在二极管中流动的电流的零点处的参考时刻前后的每个晶闸管是否确保足够的关断时间的装置，以及用于接通整个晶闸管的装置当没有确保足够的关闭时间时。由于在关断时间不足的状态下，没有一个晶闸管关断，所以有可能确实地实现一个故障的确切预防，即一个或多个晶闸管早于其他晶闸管导致过压击穿。

46. 发明授权

US4255700A Control circuit of reactive power compensation apparatus 失效
标题翻译：无功补偿装置的控制电路
公开(公告)号：US4255700A
公开(公告)日：1981-03-10
申请号：US18940
申请日：1979-03-09
申请人： Masatoshi Takeda
发明人： Masatoshi Takeda
IPC分类号： G01R21/00 , H02J3/18
CPC分类号： G01R21/003 , H02J3/1864 , Y02E40/12
摘要： A control circuit of a reactive power compensation apparatus which comprises a reactor and a capacitor are connected in parallel between a power source and a load to perform phase control of current passing through the reactor by a control switching element such as thyristor. The control circuit comprises a device for detecting instantaneous value of load current at a predetermined phase of the power voltage, a multiplier, a subtractor and a divider and a device for generating gate pulse in comparison of the output signal of the divider with the rating function generated in synchronizing to the peak phase of the power voltage.
摘要翻译：包括电抗器和电容器的无功补偿装置的控制电路并联连接在电源和负载之间，以通过诸如晶闸管的控制开关元件执行通过电抗器的电流的相位控制。该控制电路包括用于检测在电源电压的预定相位处的负载电流的瞬时值的装置，乘法器，减法器和分频器以及用于与分频器的输出信号与额定功能相比较来产生门脉冲的装置在与电源电压的峰值相位同步时产生。

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