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51. 发明专利

JP2004248467A Power converter 有权
公开(公告)号：JP2004248467A
公开(公告)日：2004-09-02
申请号：JP2003038237
申请日：2003-02-17
申请人： Toshiba Corp , 株式会社東芝
发明人： YUKI KAZUAKI , ITO KENJI , TANAKA SHIGERU
IPC分类号： B60M3/06 , H02M7/12 , H02M7/17 , H02M7/19 , H02M7/72
摘要： PROBLEM TO BE SOLVED: To reduce the cost of a voltage type self-excited power converter by suppressing maximum interruption current thereof. SOLUTION: Each functional section (Z, Gi(s), PLL, PHC) of a drive control circuit regulates the phase angle ϕ of an AC side output voltage Vc from the voltage type self-excited power converter CNV with respect to power supply voltages Vr, Vs and Vt. Based on the regulated phase angle ϕ, a phase drive control circuit PHC controls the phase of a gate signal having a constant pulse pattern synchronized with the frequency of a three-phase AC power supply SUP and then drives the voltage type self-excited power converter CNV with controlled gate signals g1-g6 thus controlling input currents Ir, Is and It. COPYRIGHT: (C)2004,JPO&NCIPI

52. 发明专利

JP2004103654A Optically coupled semiconductor device and its manufacturing method 审中-公开
公开(公告)号：JP2004103654A
公开(公告)日：2004-04-02
申请号：JP2002260177
申请日：2002-09-05
申请人： Toshiba Corp , 株式会社東芝
发明人： ITO KENJI , SAITO YASUTO , ARAKAWA MASAYUKI , TOMIOKA TAIZO , SUEMATSU MUTSUMI , MORI IKUO
IPC分类号： H01L31/12
摘要： PROBLEM TO BE SOLVED: To provide an optically coupled semiconductor device that can be reduced in package capacity by reducing the capacity between output leads while the size of a package is reduced. SOLUTION: This optically coupled semiconductor device is provided with a light emitting element 53 mounted on a lead 40a, switching elements 51 and 52 respectively mounted on the front end sides of leads 50a and 50b, and a light receiving element 53 connected to the switching elements 51 and 52. This semiconductor device is also provided with a light guiding path resin 55 arranged between the light emitting surface of the light emitting element 41 and the light receiving surface of the light receiving element 53, and a sealing resin 56 which covers the front end sides of first and second lead frames 40 and 50, the light emitting element 41, switching elements 51 and 52, light receiving element 53, and light guiding path resin 55. The paired leads 50a and 50b of the second lead frame 50 are drawn out in the opposite directions by 180°. COPYRIGHT: (C)2004,JPO

53. 发明专利

JP2004088087A Optical coupling semiconductor device and its manufacturing method 审中-公开
公开(公告)号：JP2004088087A
公开(公告)日：2004-03-18
申请号：JP2003182457
申请日：2003-06-26
申请人： Toshiba Corp , 株式会社東芝
发明人： TOMIOKA TAIZO , MORI IKUO , ITO KENJI , SUEMATSU MUTSUMI , SAITO YASUTO , ARAKAWA MASAYUKI
IPC分类号： H05K1/02 , H01L31/12 , H03K17/78
CPC分类号： H01L24/97 , H01L2224/48227 , H01L2224/48471 , H01L2924/12041 , H01L2924/13091 , H01L2924/3025 , H01L2924/00
摘要： PROBLEM TO BE SOLVED: To provide the structure of an optical coupling semiconductor device suitable for its miniaturization.
SOLUTION: The optical coupling semiconductor device comprises a mount electrode 5 and a wire electrode 8 formed on a principal surface of a first layer 2 and located on a diagonal line of an opening in a second layer 3, a light emitting device 6 connected to the mount electrode 5 at its one pole and connected to the wire electrode 8 via a wire 7 at its other pole, a plurality of electrode pads 10 provided on the principal surface of the second layer 3 so as to hold the opening in the second layer, and an optical receiving device 11 connected to the electrode pad 10 and face to the light emitting device 6, and a switching device 12 connected to the other electrode pad 10 and face to a wire 7 and disposed so as to clog up the opening in the second layer 3.
COPYRIGHT: (C)2004,JPO

55. 发明专利

JPH10112472A SEMICONDUCTOR DEVICE AND ITS MANUFACTURE 失效
公开(公告)号：JPH10112472A
公开(公告)日：1998-04-28
申请号：JP26497296
申请日：1996-10-07
申请人： TOSHIBA CORP
发明人： ITO KENJI
IPC分类号： H01L21/60 , H01L23/12 , H01L23/48
摘要： PROBLEM TO BE SOLVED: To reduce the characteristic impedance by enhancing the capacitive and inductive couplings between opposed metal plates formed on a conductive layer through a dielectric layer to form capacitors. SOLUTION: A resin tape 2 has one main surface having vias 1 around which lead 3 radially run with inner lead 3 extruding into the vias 1. A metal plate 7 is adhered to the lead 3 of the tape 2 through an insulative adhesive 13 with square vias 6 at the center. The adhesive 13 uses a dielectric to form capacitor spaces between the lead 3 and metal plate 7 so as to enhance the capacitive and inductive couplings, thereby forming capacitors. This improves electric characteristics.

56. 发明专利

JPS63224479A VERTICAL SYNCHRONIZATION SEPARATING CIRCUIT 失效
公开(公告)号：JPS63224479A
公开(公告)日：1988-09-19
申请号：JP5674387
申请日：1987-03-13
申请人： TOSHIBA CORP
发明人： ITO KENJI
IPC分类号： H04N5/06
摘要： PURPOSE:To reduce the circuit scale of a vertical synchronous separating circuit with high quantization accuracy by synchronizing a composite synchronizing signal with clock pulses of sufficiently high frequency, resetting a means which divides the frequency of a high-accuracy clock with its synchronized output, and using its frequency division output as the clock of an up/down counting means. CONSTITUTION:The composite synchronizing signal A is synchronized by D flip-flop circuits 31 and 32 and an inverter 40 with the clock pulse C. An AND circuit 41 detects one edge, e.g. leading edge of the synchronized composite synchronizing signal A and D flip-flop circuits 33-35 are reset with the detection output. When an all-'0' state is detected, a D flip-flop circuit 36, AND circuits 44 and 45, and an inverter 45 inhibit a clock for counting from being inputted to the up/down counter 37 to stop its counting operation. An AND circuit 42 resets the D flip-flop circuit 36 with the leading edge of the composite synchronizing signal A synchronized with the clock pulses C to reset the stop of the counting operation.

57. 发明专利

JPS63219473A OPERATION-INFORMATION DISPLAY UNIT 失效
公开(公告)号：JPS63219473A
公开(公告)日：1988-09-13
申请号：JP5202787
申请日：1987-03-09
申请人： TOSHIBA CORP
发明人： ITO KENJI
IPC分类号： B61L25/02 , G09D1/00

58. 发明专利

JPS6385910A DIGITAL SERVO DEVICE 失效
公开(公告)号：JPS6385910A
公开(公告)日：1988-04-16
申请号：JP23171986
申请日：1986-09-30
申请人： TOSHIBA CORP
发明人： ITO KENJI
IPC分类号： G05D13/62 , G11B15/46 , G11B15/467
摘要： PURPOSE:To perform the switching of a loop gain at a digital processing part so as to be useful for integration, by varying the detected gain of a digital detection circuit. CONSTITUTION:A latch circuit 35 latches the content of (M-1) bits of a counter 33 after shifting, and the data of a QM latched previously. Also, a latch circuit 38 latches the output signals K and L of the data of a bit processing circuit 34. the data being held in the latch circuit 35 is utilized as a control signal for the rotational frequency of servomotor. Meanwhile, the data being held in the latch circuit 38 represents whether the data for controlling rotation is within a range controlled by a linear, or whether the data for controlling the rotation exceeds the upper limit or the lower limit of a linear range. And the bit processing circuit 34 performs a role to detect a desired linear range because the linear range varies by bit shift when the detected gain is varied.

59. 发明专利

JPS62154813A WAVEFORM SHAPING CIRCUIT 失效
公开(公告)号：JPS62154813A
公开(公告)日：1987-07-09
申请号：JP29500785
申请日：1985-12-26
申请人： TOSHIBA CORP
发明人： ITO KENJI
IPC分类号： H02P29/00 , G11B15/46 , H03K5/00 , H03K5/08 , H03K5/1536 , H03K12/00
摘要： PURPOSE:To obtain an accurate waveform shaping signal without the influence of AM variation of a rotation detecting signal by detecting both the zero crossing points of the leading and trailing edges of an input signal. CONSTITUTION:A comparator 34 compares an input signal DES with a level SDC, and when the input signal DES is smaller than the level SDC, outputs the 2nd signal A2 to be a high level. The 1st signal A1 and the 2nd signal A2 are supplied to the set and reset terminals of a flip flop (FF) 37 constituted of NAND circuits 35, 36. The FF 37 is triggered at the leading edge of the input signal and a waveform-shaped output signal A3 can be obtained from an output terminal 38. In addition, the circuit is also proper as a both-edge detecting constitution for detecting both the zero crossing points of the leading and trailing edges of the input signal accurately.

60. 发明专利

JP2002234365A DC ELECTROMOTIVE SYSTEM AND OPERATING METHOD THEREOF 失效
公开(公告)号：JP2002234365A
公开(公告)日：2002-08-20
申请号：JP2001031754
申请日：2001-02-08
申请人： TOSHIBA CORP
发明人： KANAI TAKEO , IGAWA HIDEKAZU , ITO KENJI
IPC分类号： H02J1/00 , B60M3/00 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To provide a DC electromotive system having little cross current among substations, and suppressing a rated capacity of equipment to a required minimum capacity, and little power loss, and to provide an operating method thereof. SOLUTION: The DC electromotive system is provided with a plurality of substations connected to be parallel with each other on a feeder 40 of a DC electric railroad. The substations respectively have: a power converter 1a, 1b, 1c, 1d for converting an AC current to a DC current; a current detector 2b, 2c, 2d for detecting the output current of the substation flowing through the feeder; and a voltage controller 3a, 3b, 3c, 3d for controlling the output voltage of the power converter based on a current value detected by the current detector. The DC electromotive system is operated by a method comprising the steps of: under a state free from load and when a train is not in an electromotive interval of a predetermined reference substation, controlling the output voltage of the substations neighboring the reference substation so that the current flowing from the neighboring substations to the reference substation becomes zero or nearly equal to zero; and controlling the output voltage of the further neighboring substations of the neighboring substations based on the neighboring substations. Therefore, the output voltage is adjusted one after another as described above.

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