公开(公告)号：US10009343B2

公开(公告)日：2018-06-26

申请号：US14985883

申请日：2015-12-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Wenbin Chen ,  Hao Lei ,  Qinqin Yang

IPC: H04L29/06 ,  H04L9/00 ,  H04L9/32

CPC classification number: H04L63/0876 ,  H04L9/008 ,  H04L9/32 ,  H04L9/3231 ,  H04L63/0442 ,  H04L63/0861 ,  H04L63/123 ,  H04L63/126

Abstract: Embodiments of the present disclosure provide a method, an apparatus, and a system for authenticating a fully homomorphic message, where the method includes: acquiring a message authentication key, where: the message authentication key includes a public key, a first character string, and a second character string; the first character string is a character string that consists of 0 and 1 and has a length of n; the second character string is a character string that consists of 0 and 1 and has a length of n; generating an authentication fingerprint corresponding to each bit of to-be-computed data; sending a computation request to a server; receiving an authentication fingerprint corresponding to the computation result; and performing correctness authentication on the computation result according to the received authentication fingerprint, which effectively reduces an amount of computation in a verification process.

公开(公告)号：US10008955B2

公开(公告)日：2018-06-26

申请号：US15460534

申请日：2017-03-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenbin Chen ,  Kui Zhou

IPC: H02M7/757 ,  H02M7/06 ,  H02M3/335 ,  H02M7/219

CPC classification number: H02M7/06 ,  H02M3/33592 ,  H02M2007/2195 ,  Y02B70/1408 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1475 ,  Y02P80/112

Abstract: A synchronous rectification converter circuit is provided, including three transformer secondary-windings, three current transformers, a synchronous rectification switching circuit, a diode rectification circuit, and a control circuit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure circuit. Three vertices of the first triangular structure circuit are connected to the synchronous rectification switching circuit. The three current transformer secondary-windings are connected in series to form a second triangular structure circuit. Three vertices of the second triangular structure circuit are connected to the diode rectification circuit. The diode rectification circuit is connected to the control circuit and the synchronous rectification switching circuit is connected to the control circuit.

公开(公告)号：US09780687B2

公开(公告)日：2017-10-03

申请号：US14924989

申请日：2015-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenbin Chen ,  Kui Zhou

IPC: H02M5/45 ,  H02M7/06 ,  H02M3/335 ,  H02M7/219

CPC classification number: H02M7/06 ,  H02M3/33592 ,  H02M2007/2195 ,  Y02B70/1408 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1475 ,  Y02P80/112

Abstract: The present invention provides a synchronous rectification converter circuit, including three transformer secondary-windings, three current transformer, a synchronous rectification switching unit, a diode rectification unit, and a control unit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure. Three vertices of the first triangular structure are connected to the synchronous rectification switching unit. The three current transformer secondary-windings are connected in series to form a second triangular structure. Three vertices of the second triangular structure are connected to the diode rectification unit. The diode rectification unit is connected to the control unit and the synchronous rectification switching unit is connected to the control unit. The present invention achieves a purpose of precisely controlling the on-off state of the synchronous rectification circuit.

公开(公告)号：US09570973B2

公开(公告)日：2017-02-14

申请号：US14017442

申请日：2013-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenbin Chen ,  Shengyong Dai ,  Boning Huang

IPC: H02M1/42 ,  H02M7/04 ,  H02M1/14 ,  H02M3/158

CPC classification number: H02M1/4208 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/04 ,  H02M2003/1586 ,  Y02B70/126 ,  Y02P80/112

Abstract: A bridgeless power factor correction (PFC) circuit, which includes an alternating current power supply module, a power module, and a control module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows.

Abstract translation: 一种无桥功率因数校正（PFC）电路，其包括交流电源模块，功率模块和控制模块; 功率模块包括一个或多个交错PFC电路，每个交错PFC电路包括一个电感器，一对第一开关组件和至少一个电容器，电感器的第一端连接到交流电源模块，并且 电感器的第二端通过第一开关部件中的一个连接到每个电容器的一端，并且还通过第一开关部件中的另一个连接到每个电容器的另一端; 并且控制模块对功率模块中的每个第一开关部件的电流进行采样，并且关断负电流流过的第一开关部件。

公开(公告)号：US20150109838A1

公开(公告)日：2015-04-23

申请号：US14585929

申请日：2014-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenbin Chen ,  Jie Liu

IPC: H02M7/06

CPC classification number: H02M7/06 ,  H02M1/08 ,  H02M3/33546 ,  H02M3/33592 ,  H02M7/00 ,  H02M7/217 ,  H02M2001/0009 ,  Y02B70/1475

Abstract: A synchronous rectifier control circuit an includes a current transformer (CT), a bridge rectifier, and a comparator, where the CT is connected in series to a secondary side, performs sampling on a loop current of the secondary side to obtain a current detection signal, and outputs the obtained current detection signal to the bridge rectifier; the bridge rectifier acquires a secondary-side sampling current according to the current detection signal, and outputs the secondary-side sampling current to the comparator so that the comparator generates a voltage difference; and an output signal of the comparator turns over so as to control on and off of a synchronous rectifier transistor. In this way, high-speed and high-precision control over a synchronous rectifier transistor can be implemented. The control is simple and is low in cost.

Abstract translation: 同步整流器控制电路a包括电流互感器（CT），桥式整流器和比较器，其中CT与次级侧串联连接，对次级侧的回路电流进行采样以获得电流检测信号 并将获得的电流检测信号输出到桥式整流器; 桥式整流器根据电流检测信号获取次级侧采样电流，并将次级侧采样电流输出到比较器，使比较器产生电压差; 并且比较器的输出信号翻转，以便控制同步整流晶体管的导通和截止。 以这种方式，可以实现对同步整流晶体管的高速和高精度控制。 控制简单，成本低。

公开(公告)号：US20140002033A1

公开(公告)日：2014-01-02

申请号：US14017442

申请日：2013-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenbin Chen ,  Shengyong Dai ,  Boning Huang

IPC: H02M1/42

CPC classification number: H02M1/4208 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/04 ,  H02M2003/1586 ,  Y02B70/126 ,  Y02P80/112

Abstract: A bridgeless power factor correction (PFC) circuit, which includes an alternating current power supply module, a power module, and a control module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows.

Abstract translation: 一种无桥功率因数校正（PFC）电路，其包括交流电源模块，功率模块和控制模块; 功率模块包括一个或多个交错PFC电路，每个交错PFC电路包括一个电感器，一对第一开关组件和至少一个电容器，电感器的第一端连接到交流电源模块，并且 电感器的第二端通过第一开关部件中的一个连接到每个电容器的一端，并且还通过第一开关部件中的另一个连接到每个电容器的另一端; 并且控制模块对功率模块中的每个第一开关部件的电流进行采样，并且关断负电流流过的第一开关部件。

公开(公告)号：US09391534B2

公开(公告)日：2016-07-12

申请号：US14585929

申请日：2014-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenbin Chen ,  Jie Liu

IPC: H02M7/06 ,  H02M1/08 ,  H02M7/217 ,  H02M7/00 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M7/06 ,  H02M1/08 ,  H02M3/33546 ,  H02M3/33592 ,  H02M7/00 ,  H02M7/217 ,  H02M2001/0009 ,  Y02B70/1475

Abstract: A synchronous rectifier control circuit an includes a current transformer (CT), a bridge rectifier, and a comparator, where the CT is connected in series to a secondary side, performs sampling on a loop current of the secondary side to obtain a current detection signal, and outputs the obtained current detection signal to the bridge rectifier; the bridge rectifier acquires a secondary-side sampling current according to the current detection signal, and outputs the secondary-side sampling current to the comparator so that the comparator generates a voltage difference; and an output signal of the comparator turns over so as to control on and off of a synchronous rectifier transistor. In this way, high-speed and high-precision control over a synchronous rectifier transistor can be implemented. The control is simple and is low in cost.

Abstract translation: 同步整流器控制电路a包括电流互感器（CT），桥式整流器和比较器，其中CT与次级侧串联连接，对次级侧的回路电流进行采样以获得电流检测信号 并将获得的电流检测信号输出到桥式整流器; 桥式整流器根据电流检测信号获取次级侧采样电流，并将次级侧采样电流输出到比较器，使比较器产生电压差; 并且比较器的输出信号翻转，以便控制同步整流晶体管的导通和截止。 以这种方式，可以实现对同步整流晶体管的高速和高精度控制。 控制简单，成本低。

公开(公告)号：US20130051101A1

公开(公告)日：2013-02-28

申请号：US13661749

申请日：2012-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenzong Cao ,  Wenbin Chen

IPC: H02M7/06

CPC classification number: H02J9/061 ,  G05F1/56 ,  H02J7/345 ,  H02M2001/0096

Abstract: A hold-up time circuit is provided, including: an energy storage capacitor, a step-down circuit and a step-up circuit. A first and a second input end of the step-down circuit are connected to two electrodes of an input power supply. A first output end and a second output end of the step-down circuit are connected to two electrodes of the energy storage capacitor. When the input power supply is normal, the step-down circuit is configured to perform reduction processing on an input voltage of the input power supply, and the energy storage capacitor is charged by an output of the step-down circuit. A first and a second input end of the step-up circuit are connected to the two electrodes of the energy storage capacitor. When the input power supply is power-off, the step-up circuit is configured to perform boost processing on an energy storage voltage of the energy storage capacitor.

Abstract translation: 提供了一种保持时间电路，包括：储能电容器，降压电路和升压电路。 降压电路的第一和第二输入端连接到输入电源的两个电极。 降压电路的第一输出端和第二输出端连接到储能电容器的两个电极。 当输入电源正常时，降压电路被配置为对输入电源的输入电压进行缩小处理，并且通过降压电路的输出对能量存储电容器进行充电。 升压电路的第一和第二输入端连接到储能电容器的两个电极。 当输入电源断电时，升压电路被配置为对储能电容器的储能电压进行升压处理。