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    • 1. 发明授权
    • Gate driving circuit
    • 门驱动电路
    • US08427225B2
    • 2013-04-23
    • US12681515
    • 2008-09-03
    • Hiroshi NakatakeMasaru FukuTatsuya OkudaYoshikazu Tsunoda
    • Hiroshi NakatakeMasaru FukuTatsuya OkudaYoshikazu Tsunoda
    • H03K17/687
    • H02M1/08H03K17/0406H03K17/0412H03K17/162H03K2217/0036
    • To obtain a gate driving circuit in which rising of a constant current of a constant current circuit is fast and power saving is achieved, the gate driving circuit includes: a constant current driving circuit (28) for supplying a constant current; a gate terminal of a power semiconductor element (1), which is connected to an output terminal of the constant current driving circuit; a comparator (22) for comparing a voltage at the gate terminal with a predetermined voltage value and outputting a signal indicating that the voltage is higher than the predetermined voltage value; and a driving control section (20) for increasing a current from the constant current driving circuit in response to a signal for turning on the power semiconductor element, and reducing the current from the constant current driving circuit in response to the signal from the comparator.
    • 为了获得恒定电流电路的恒定电流的上升快速并且实现功率节省的栅极驱动电路,栅极驱动电路包括:用于提供恒定电流的恒定电流驱动电路(28); 功率半导体元件(1)的栅极端子,连接到恒流驱动电路的输出端子; 比较器(22),用于将栅极端子处的电压与预定电压值进行比较,并输出表示电压高于预定电压值的信号; 以及用于响应于用于接通功率半导体元件的信号而增加来自恒定电流驱动电路的电流并且响应于来自比较器的信号而减小来自恒定电流驱动电路的电流的驱动控制部分(20)。
    • 2. 发明授权
    • Gate drive apparatus
    • 闸门驱动装置
    • US08138818B2
    • 2012-03-20
    • US12144871
    • 2008-06-24
    • Yoshikazu TsunodaTatsuya OkudaMasaru Fuku
    • Yoshikazu TsunodaTatsuya OkudaMasaru Fuku
    • H03K17/04
    • H03K17/168H03K17/0406H03K17/063H03K17/08128
    • A gate drive apparatus including a constant-current-pulse gate drive circuit which creates a gate signal for a switching device as a constant-current output, a constant-voltage-pulse gate drive circuit which creates the gate signal as a constant-voltage output, and a decision/switch circuit which switches the operation of the constant-current-pulse gate drive circuit and the operation of the constant-voltage-pulse gate drive circuit. The variance of switching speeds attributed to the variances of threshold voltages and mirror voltages in a plurality of switching devices which are driven by the gate drive apparatus can be suppressed, and the variance of losses can be minimized.
    • 一种栅极驱动装置,包括:恒定电流脉冲栅极驱动电路,其将作为恒流输出的开关装置的栅极信号产生;恒压脉冲栅极驱动电路,其将栅极信号作为恒定电压输出 以及切换恒流脉冲栅极驱动电路的动作和恒压脉冲栅极驱动电路的动作的决定/切换电路。 可以抑制归因于由栅极驱动装置驱动的多个开关装置中的阈值电压和镜像电压的方差的开关速度的变化,并且可以使损失的方差最小化。
    • 3. 发明申请
    • GATE DRIVE APPARATUS
    • 门驱动装置
    • US20090002054A1
    • 2009-01-01
    • US12144871
    • 2008-06-24
    • Yoshikazu TSUNODATatsuya OkudaMasaru Fuku
    • Yoshikazu TSUNODATatsuya OkudaMasaru Fuku
    • H03K17/04
    • H03K17/168H03K17/0406H03K17/063H03K17/08128
    • A gate drive apparatus including a constant-current-pulse gate drive circuit which creates a gate signal for a switching device as a constant-current output, a constant-voltage-pulse gate drive circuit which creates the gate signal as a constant-voltage output, and a decision/switch circuit which switches the operation of the constant-current-pulse gate drive circuit and the operation of the constant-voltage-pulse gate drive circuit. The variance of switching speeds attributed to the variances of threshold voltages and mirror voltages in a plurality of switching devices which are driven by the gate drive apparatus can be suppressed, and the variance of losses can be minimized.
    • 一种栅极驱动装置,包括:恒定电流脉冲栅极驱动电路,其将作为恒流输出的开关装置的栅极信号产生;恒压脉冲栅极驱动电路,其将栅极信号作为恒定电压输出 以及切换恒流脉冲栅极驱动电路的动作和恒压脉冲栅极驱动电路的动作的决定/切换电路。 可以抑制归因于由栅极驱动装置驱动的多个开关装置中的阈值电压和镜像电压的方差的开关速度的变化,并且可以使损失的方差最小化。
    • 4. 发明申请
    • GATE DRIVING CIRCUIT
    • 门驱动电路
    • US20100213989A1
    • 2010-08-26
    • US12681515
    • 2008-09-03
    • Hiroshi NakatakeMasaru FukuTatsuya OkudaYoshikazu Tsunoda
    • Hiroshi NakatakeMasaru FukuTatsuya OkudaYoshikazu Tsunoda
    • H03K3/353
    • H02M1/08H03K17/0406H03K17/0412H03K17/162H03K2217/0036
    • To obtain a gate driving circuit in which rising of a constant current of a constant current circuit is fast and power saving is achieved, the gate driving circuit includes: a constant current driving circuit (28) for supplying a constant current; a gate terminal of a power semiconductor element (1), which is connected to an output terminal of the constant current driving circuit; a comparator (22) for comparing a voltage at the gate terminal with a predetermined voltage value and outputting a signal indicating that the voltage is higher than the predetermined voltage value; and a driving control section (20) for increasing a current from the constant current driving circuit in response to a signal for turning on the power semiconductor element, and reducing the current from the constant current driving circuit in response to the signal from the comparator.
    • 为了获得恒定电流电路的恒定电流的上升快速并且实现功率节省的栅极驱动电路,栅极驱动电路包括:用于提供恒定电流的恒定电流驱动电路(28); 功率半导体元件(1)的栅极端子,连接到恒流驱动电路的输出端子; 比较器(22),用于将栅极端子处的电压与预定电压值进行比较,并输出表示电压高于预定电压值的信号; 以及用于响应于用于接通功率半导体元件的信号而增加来自恒定电流驱动电路的电流并且响应于来自比较器的信号而减小来自恒定电流驱动电路的电流的驱动控制部分(20)。
    • 6. 发明授权
    • Vehicle key system
    • 车辆钥匙系统
    • US06710700B1
    • 2004-03-23
    • US09648629
    • 2000-08-28
    • Hirofumi TatsukawaHisashi IshikuraToru MoritaKeiichi EnokiMasaru FukuFumitaka SatouKoji Nagao
    • Hirofumi TatsukawaHisashi IshikuraToru MoritaKeiichi EnokiMasaru FukuFumitaka SatouKoji Nagao
    • G05B1900
    • B60R25/252B60R25/04G07C9/00563G07C2009/00793
    • A vehicle key system comprises a transmitter including a fingerprint information capturing unit for capturing fingerprint information from a user's fingerprint, and a transmit unit for transmitting the fingerprint information captured by the fingerprint information capturing unit. The system also includes an attaching unit disposed in a vehicle, for attaching the transmitter thereto, and a receiver disposed in the vehicle, including a receive unit for receiving the fingerprint information transmitted from the transmit unit of the transmitter, a fingerprint verification unit for verifying the fingerprint information against a list of pieces of previously stored fingerprint information, an attaching detection unit for determining whether or not the transmitter is attached to the attaching unit, and a control unit for controlling pieces of equipment in the vehicle according to a verification result from the fingerprint verification unit and a detection result from the mounting detection unit. The user can manipulate the pieces of equipment, e.g. start the engine, by actuating a switch, only when the electronic key transmitter is attached to the attaching unit.
    • 车辆钥匙系统包括:发射器,包括用于从用户的指纹捕获指纹信息的指纹信息捕获单元;以及发送单元,用于发送由指纹信息捕获单元捕获的指纹信息。 该系统还包括设置在车辆中的用于将发射器附接到其上的附接单元和设置在车辆中的接收器,包括用于接收从发射机的发射单元发送的指纹信息的接收单元,用于验证的指纹验证单元 所述指纹信息针对先前存储的指纹信息的列表,用于确定所述发送器是否附接到所述附接单元的附着检测单元,以及用于根据来自所述附加单元的验证结果来控制所述车辆中的设备的控制单元 指纹验证单元和来自安装检测单元的检测结果。 用户可以操纵这些设备,例如, 只有当电子钥匙发射器连接到安装单元时,通过启动开关启动发动机。