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公开(公告)号：US10804923B2
公开(公告)日：2020-10-13
申请号：US16677810
申请日：2019-11-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yue Chen , Liang Chen , Jiake Wang
Abstract: A superposition operation circuit and a float-voltage digital-to-analog conversion circuit to superpose analog elements according to an indirect current superposition principle, where a voltage follower is implemented using a first operational amplifier such that an output end of the voltage follower is clamped to a voltage that is input to a positive-phase input end, namely, a to-be-superposed analog element. Then a current generation circuit converts a voltage signal to a current signal, a voltage drop for the current signal is generated on a first resistor coupled to an output end of the first operational amplifier, and the voltage drop is superposed on a voltage signal output by the first operational amplifier.
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公开(公告)号：US20190294191A1
公开(公告)日：2019-09-26
申请号：US16439934
申请日：2019-06-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Liang Chen , Peng Zou
Abstract: An output voltage regulation apparatus includes a voltage regulation circuit, a control circuit, a power stage circuit, a filtering network, and a feedback network. The feedback network is configured to output a feedback voltage to a feedback voltage node of the control circuit. The voltage regulation circuit is configured to regulate the feedback voltage. The control circuit is configured to switch on or off power transistors in the power stage circuit. The filtering network is configured to perform filtering on an output voltage of the power stage circuit to obtain the regulated output voltage.
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公开(公告)号：US11558042B2
公开(公告)日：2023-01-17
申请号：US17504368
申请日：2021-10-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yue Chen , Jiake Wang , Liang Chen
Abstract: A multi-phase signal control circuit includes: a comparator, configured to compare a triangular wave signal with a feedback control signal to output a first pulse width modulation signal, where the feedback control signal is a signal fed back by the power stage circuit; a phase switch circuit, configured to receive a phase switch signal and the first pulse width modulation signal to generate a first phase signal and a second phase signal, where the first phase signal and the second phase signal are used to control the power stage circuit to generate an output voltage signal.
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公开(公告)号：US10802522B2
公开(公告)日：2020-10-13
申请号：US16439934
申请日：2019-06-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Liang Chen , Peng Zou
Abstract: An output voltage regulation apparatus includes a voltage regulation circuit, a control circuit, a power stage circuit, a filtering network, and a feedback network. The feedback network is configured to output a feedback voltage to a feedback voltage node of the control circuit. The voltage regulation circuit is configured to regulate the feedback voltage. The control circuit is configured to switch on or off power transistors in the power stage circuit. The filtering network is configured to perform filtering on an output voltage of the power stage circuit to obtain the regulated output voltage.
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公开(公告)号：US20180041124A1
公开(公告)日：2018-02-08
申请号：US15785206
申请日：2017-10-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Liang Chen
IPC: H02M3/158 , H03K17/687
CPC classification number: H02M3/158 , H02M1/32 , H02M3/1588 , H03K17/6872
Abstract: The present disclosure discloses a voltage conversion circuit, including: a first power transistor; a second power transistor, where the second power transistor is cut off when the first power transistor is conductive and is conductive when the first power transistor is cut off; a first energy storage element; a second energy storage element, a bleed module, configured to be coupled to the first power transistor, where when the first power transistor is cut off and a voltage of a source of the first power transistor reaches a source threshold, provide a current path for a current flowing from the source of the first power transistor to the ground. By means of the foregoing, a voltage difference between a drain and the source of the first power transistor can be decreased, thereby reducing a risk of burning out the first power transistor, and avoiding an increase in manufacturing costs.
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Patent Agency Ranking
公开(公告)号：US20220038082A1
公开(公告)日：2022-02-03
申请号：US17504368
申请日：2021-10-18
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Yue Chen , Jiake Wang , Liang Chen
Abstract: A multi-phase signal control circuit includes: a comparator, configured to compare a triangular wave signal with a feedback control signal to output a first pulse width modulation signal, where the feedback control signal is a signal fed back by the power stage circuit; a phase switch circuit, configured to receive a phase switch signal and the first pulse width modulation signal to generate a first phase signal and a second phase signal, where the first phase signal and the second phase signal are used to control the power stage circuit to generate an output voltage signal.
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公开(公告)号：US10680519B2
公开(公告)日：2020-06-09
申请号：US16183233
申请日：2018-11-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Liang Chen
IPC: H02M3/158 , H02M1/32 , H03K17/687
Abstract: The present disclosure discloses a voltage conversion circuit, including: a first power transistor; a second power transistor, where the second power transistor is cut off when the first power transistor is conductive and is conductive when the first power transistor is cut off; a first energy storage element; a second energy storage element, a bleed module, configured to be coupled to the first power transistor, where when the first power transistor is cut off and a voltage of a source of the first power transistor reaches a source threshold, provide a current path for a current flowing from the source of the first power transistor to the ground. By means of the foregoing, a voltage difference between a drain and the source of the first power transistor can be decreased, thereby reducing a risk of burning out the first power transistor, and avoiding an increase in manufacturing costs.
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公开(公告)号：US20160286044A1
公开(公告)日：2016-09-29
申请号：US15172763
申请日：2016-06-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Mingyu Zhang
IPC: H04M3/42
CPC classification number: H04M3/42221 , H04M1/656 , H04M1/72519
Abstract: A terminal and a recording method of the terminal are presented. The terminal includes one or more processors and a memory storing computer readable program, where the one or more processors is configured to monitor call trigger event, and when the call trigger event is detected, trigger the call unit to switch a terminal status; control switching of the terminal status; and initiate a recording operation to start recording of the current call when the terminal status controlled by the call unit is switched to the calling state related to the call trigger event. If a call is performed with the terminal and recording is needed, a recording operation is automatically initiated according to a one-off event trigger and monitoring of the terminal status, which simplifies steps of the recording operation of the terminal, improves usability of the terminal, and achieves a one-click effect of recording and calling.
Abstract translation: 提出终端的终端和记录方法。 终端包括一个或多个处理器和存储计算机可读程序的存储器，其中一个或多个处理器被配置为监视呼叫触发事件，并且当检测到呼叫触发事件时，触发呼叫单元切换终端状态; 控制终端状态切换; 并且当由呼叫单元控制的终端状态切换到与呼叫触发事件相关的呼叫状态时，开始记录操作以开始当前呼叫的记录。 如果使用终端执行呼叫并且需要记录，则根据一次性事件触发和监视终端状态自动启动记录操作，这简化了终端的记录操作的步骤，提高了终端的可用性 ，实现了一键录音和通话的效果。
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公开(公告)号：US10672757B2
公开(公告)日：2020-06-02
申请号：US16518373
申请日：2019-07-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Yue Chen , Qiang Xie
Abstract: A multiphase parallel digital current (DC) to DC converter (DCDC) circuit includes a loop operational amplifier (EA) unit, N output-stage circuit units, and M drive units, where a drive unit corresponds to at least one output-stage circuit unit including a comparator (COMP) and a power stage circuit, an output end of the loop operational amplifier EA unit is connected to an input end of the drive unit, an output end of the drive unit is connected to an input end of a COMP in a corresponding output-stage circuit unit, and an output end of the COMP is connected to an input end of a power stage circuit in the same output-stage circuit unit, and an input end of the loop operational amplifier EA unit is connected to output ends of all the power stage circuits.
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10.发明申请公开(公告)号：US20200076445A1
公开(公告)日：2020-03-05
申请号：US16677810
申请日：2019-11-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yue Chen , Liang Chen , Jiake Wang
Abstract: A superposition operation circuit and a float-voltage digital-to-analog conversion circuit to superpose analog elements according to an indirect current superposition principle, where a voltage follower is implemented using a first operational amplifier such that an output end of the voltage follower is clamped to a voltage that is input to a positive-phase input end, namely, a to-be-superposed analog element. Then a current generation circuit converts a voltage signal to a current signal, a voltage drop for the current signal is generated on a first resistor coupled to an output end of the first operational amplifier, and the voltage drop is superposed on a voltage signal output by the first operational amplifier.
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