Patents by Inventor Pengfei Lu
Pengfei Lu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240135543Abstract: A method and an electronic device with image data generating are disclosed. The electronic device includes: one or more processors; and memory storing instructions configured to cause the one or more processors to: input an input image to a target model that performs segmenting on the input image to generate a segmented image whose pixels have respective class labels predicted by the target model, calculate an optimization value for the input image based on the segmented image and based on a class label of a first grid area among a plurality of grid areas of a guide image, and optimize the input image based on the optimization value.Type: ApplicationFiled: October 1, 2023Publication date: April 25, 2024Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Fang LIU, Fengtao XIE, Fangfang DU, Ke LU, Pengfei ZHAO
-
Publication number: 20240123838Abstract: A battery module includes: a plurality of cells; and a cell restraining structure having an internal frame and an external shell fit with the internal frame to form a plurality of chambers for receiving the plurality of cells respectively so as to package and manage the cells. The internal frame includes an elastic element forming at least one first surface of each chamber, the elastic element being elastically deformed as being pressed by a predetermined amount by a corresponding cell received in each chamber such that the elastically deformed elastic element exerts a first force to the corresponding cell. The elastically deformed elastic element is further pressed or tends to recover in responding to reversible expansion or contraction of the corresponding cell in operation such that a restraining force to the corresponding cell is determined by the first force.Type: ApplicationFiled: November 17, 2020Publication date: April 18, 2024Applicant: SAIC MOTOR CORPORATION LIMITEDInventors: Kewei LU, Dingxian ZHOU, Zhao LI, Dong XU, Pengfei ZHAO
-
Publication number: 20240117903Abstract: An ultrahigh-pressure acid-fracturing isodiametric hose assembly, comprising a hose body and a metal joint. The metal joint comprises an inner tube, a first outer tube the inner tube, and a second outer tube. The first outer tube and the second outer tube each is an independent pressing part. An external groove is provided at an outer wall of the inner tube. An end of the first outer tube comprises an internal ridge which matches the external groove for snapping. The terminal of the inner tube comprises a connecting portion. An outer wall of the inner tube comprises a first protrusion, and an inner wall of the first outer tube comprises a second protrusion engaging with the first protrusion. The hose body is clamped between the first protrusion and the second protrusion that are engaged. An inner wall of the second outer tube comprises multiple micro-protrusions.Type: ApplicationFiled: July 27, 2023Publication date: April 11, 2024Applicant: LUOHE LETONE HYDRAULICS TECHNOLOGY CO., LTD.Inventors: Hongliang ZHAO, Zhian LIU, Peiyuan WU, Feilong ZHANG, Xingpeng YANG, Lili LU, Yong ZHANG, Yanhui ZHAO, Pengfei ZHANG, Ning LI
-
Patent number: 11909300Abstract: A switch-mode power supply (SMPS), an SMPS system and a power supply method for an SMPS system are disclosed. The SMPS controller includes an output-voltage power supply unit, a built-in energy storage unit and a logic control unit. The output-voltage power supply unit is configured to charge the built-in energy storage unit using an output voltage from the SMPS system so that the built-in energy storage unit can provide an operating voltage for the logic control unit. The use of a stand-off energy storage capacitor can be dispensed with, and the use of the output voltage as a power supply is enabled. As a result, significant reductions in overall and standby power dissipation are achieved. In addition, the SMPS controller may further include a high-voltage power supply unit, which provides a hybrid power supply solution, together with the output-voltage power supply unit.Type: GrantFiled: June 4, 2021Date of Patent: February 20, 2024Assignee: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.Inventors: Rulong Jiang, Liqiang Hu, Shungen Sun, Zhen Zhu, Xiaoru Gao, Yihui Chen, Hong Zhang, Pengfei Lu
-
Publication number: 20220400918Abstract: A separation structure for a dust cup of a vacuum cleaner is provided and includes a main body and a separator. The separator is fixedly mounted in an internal space of the main body. The internal space of the main body is divided by the separator into a first chamber, a second chamber and a third chamber. The separator is provided with a through hole, an air intake portion and a plurality of sedimentation portions communicated with the air intake portion. The plurality of sedimentation portions are arranged around the air intake portion. A length of the air intake portion is smaller than a length of each of the plurality of sedimentation portions. The air intake portion is communicated with the second chamber, the plurality of sedimentation portions are communicated with the third chamber. The first chamber is communicated with the second chamber via the through hole.Type: ApplicationFiled: December 30, 2021Publication date: December 22, 2022Inventor: Pengfei Lu
-
Publication number: 20220400919Abstract: A separation structure for a dust cup of a vacuum cleaner is provided and includes a cyclone separator. The cyclone separator is provided with a connecting ring, a plurality of arc blades, a plurality of flat plates, a conical tube and a cylindrical tube. Each arc blade has a top fixedly connected with the connecting ring and a bottom fixedly connected with a respective flat plate. The flat plates are fixedly mounted at a large end of the conical tube. A plurality of air inlets are formed by gaps defined by the connecting ring, the arc blades and the flat plates. The cylindrical tube is fixedly connected with and communicated with the conical tube. A small end of the conical tube is received in the cylindrical tube. An included angle between each arc blade and the respective flat plate is an obtuse angle.Type: ApplicationFiled: December 30, 2021Publication date: December 22, 2022Inventor: Pengfei Lu
-
Publication number: 20220206097Abstract: Provided in embodiments of the present invention are a magnetic resonance image processing method and device, and a computer-readable storage medium. The method includes: determining a central angle; converting, on the basis of the central angle, a radio-frequency field pattern of a radio-frequency transmitting coil into an angular pattern; acquiring, on the basis of a trigonometric function value of the angular pattern, a radio-frequency transmitting field pattern of the radio-frequency transmitting coil; and correcting, on the basis of the radio-frequency transmitting field pattern, a magnetic resonance image to be corrected.Type: ApplicationFiled: December 1, 2021Publication date: June 30, 2022Inventors: Hanbei Zhang, Yongchuan Lai, Pengfei Lu, Zhao Wang, Pengshuai Wang
-
Patent number: 11360171Abstract: Embodiments of the present invention provide a magnetic resonance imaging system and a method for obtaining magnetic resonance imaging data. The method comprises: applying a fat suppression pulse before the start of any repetition time of an imaging sequence; performing a plurality of echoes in the repetition time, wherein first image data when water and fat are in phase and second image data when water and fat are out of phase are obtained during each echo of the plurality of echoes; and obtaining fat-suppressed image data according to the first image data and the second image data.Type: GrantFiled: April 15, 2020Date of Patent: June 14, 2022Assignee: GE Precision Healthcare LLCInventors: Nan Cao, Yongchuan Lai, Pengfei Lu
-
Publication number: 20210384832Abstract: A switch-mode power supply (SMPS), an SMPS system and a power supply method for an SMPS system are disclosed. The SMPS controller includes an output-voltage power supply unit, a built-in energy storage unit and a logic control unit. The output-voltage power supply unit is configured to charge the built-in energy storage unit using an output voltage from the SMPS system so that the built-in energy storage unit can provide an operating voltage for the logic control unit. The use of a stand-off energy storage capacitor can be dispensed with, and the use of the output voltage as a power supply is enabled. As a result, significant reductions in overall and standby power dissipation are achieved. In addition, the SMPS controller may further include a high-voltage power supply unit, which provides a hybrid power supply solution, together with the output-voltage power supply unit.Type: ApplicationFiled: June 4, 2021Publication date: December 9, 2021Inventors: Rulong JIANG, Liqiang HU, Shungen SUN, Zhen ZHU, Xiaoru GAO, Yihui CHEN, Hong ZHANG, Pengfei LU
-
Publication number: 20200400768Abstract: Systems and methods for suppressing background in time-of-flight (TOF) magnetic resonance angiography (MRA) are disclosed. An exemplary method includes obtaining a first TOF image through a high-resolution acquisition with a saturation band on one side of an imaging slab, obtaining a second TOF image through a low-resolution acquisition with two saturation bands on both sides of the imaging slab, and subtracting the second TOF image from the first TOF image to obtaining a subtraction TOF image. Post processing such as maximum intensity projection (MIP) is performed on the subtraction TOF image.Type: ApplicationFiled: June 19, 2019Publication date: December 24, 2020Inventors: Jia Guo, Yongchuan Lai, Pengfei Lu, Xuan Liu
-
Patent number: 10871537Abstract: Systems and methods for suppressing background in time-of-flight (TOF) magnetic resonance angiography (MRA) are disclosed. An exemplary method includes obtaining a first TOF image through a high-resolution acquisition with a saturation band on one side of an imaging slab, obtaining a second TOF image through a low-resolution acquisition with two saturation bands on both sides of the imaging slab, and subtracting the second TOF image from the first TOF image to obtaining a subtraction TOF image. Post processing such as maximum intensity projection (MIP) is performed on the subtraction TOF image.Type: GrantFiled: June 19, 2019Date of Patent: December 22, 2020Assignee: GE Precision Healthcare LLCInventors: Jia Guo, Yongchuan Lai, Pengfei Lu, Xuan Liu
-
Publication number: 20200341088Abstract: Embodiments of the present invention provide a magnetic resonance imaging system and a method for obtaining magnetic resonance imaging data. The method comprises: applying a fat suppression pulse before the start of any repetition time of an imaging sequence; performing a plurality of echoes in the repetition time, wherein first image data when water and fat are in phase and second image data when water and fat are out of phase are obtained during each echo of the plurality of echoes; and obtaining fat-suppressed image data according to the first image data and the second image data.Type: ApplicationFiled: April 15, 2020Publication date: October 29, 2020Inventors: Nan CAO, Yongchuan LAI, Pengfei LU
-
Patent number: 10718839Abstract: The present invention provides a method and apparatus for correcting a uniformity of a magnetic resonance image, the method including: acquiring a first uniformity enhancement image by a phased-array uniformity enhancement method; and dividing the first uniformity enhancement image by a receiving sensitivity distribution value of a body coil in a magnetic resonance imaging device, so as to acquire a second uniformity enhancement image. The method further includes: dividing the second uniformity enhancement image by a spatial signal distribution value resulting from a field strength distribution of a transmitting radio-frequency field, so as to acquire a third uniformity enhancement image.Type: GrantFiled: October 31, 2017Date of Patent: July 21, 2020Assignee: GE PRECISION HEALTHCARE LLCInventors: Yongchuan Lai, Xiaoli Zhao, Weiwei Zhang, Stephen Joseph Garnier, Lisha Nie, Pengfei Lu, Hongbin Wang
-
Patent number: 10306730Abstract: The present disclosure provides a light state regulation controller, control system and control method. The controller comprises a peak current comparator, a PWM controller, a power switch, a state detector and a state machine. The peak current comparator produces a PWM turn-off signal according to a comparison result between a peak current sampling signal and a reference voltage. The PWM controller outputs a PWM control signal and the reference voltage under the control of the PWM turn-off signal and a state control signal, wherein the state control signal controls the state of the PWM control signal. The state detector detects a state change in the PWM control signal or an equivalent signal for the PWM control signal, and outputs a state input signal. The state machine produces a plurality of states according to the state input signal, and outputs the state control signal reflecting the plurality of states.Type: GrantFiled: June 15, 2018Date of Patent: May 28, 2019Assignee: Shanghai LIS Semiconductor Technology Co., Ltd.Inventors: Zhen Zhu, Haifeng Miao, Pengfei Lu, Junsheng Fang
-
Publication number: 20190141816Abstract: The present disclosure provides a light state regulation controller, control system and control method. The controller comprises a peak current comparator, a PWM controller, a power switch, a state detector and a state machine. The peak current comparator produces a PWM turn-off signal according to a comparison result between a peak current sampling signal and a reference voltage. The PWM controller outputs a PWM control signal and the reference voltage under the control of the PWM turn-off signal and a state control signal, wherein the state control signal controls the state of the PWM control signal. The state detector detects a state change in the PWM control signal or an equivalent signal for the PWM control signal, and outputs a state input signal. The state machine produces a plurality of states according to the state input signal, and outputs the state control signal reflecting the plurality of states.Type: ApplicationFiled: June 15, 2018Publication date: May 9, 2019Inventors: Zhen ZHU, Haifeng MIAO, Pengfei LU, Junsheng FANG
-
Publication number: 20180120399Abstract: The present invention provides a method and apparatus for correcting a uniformity of a magnetic resonance image, the method comprising: acquiring a first uniformity enhancement image by a phased-array uniformity enhancement method; and dividing the first uniformity enhancement image by a receiving sensitivity distribution value of a body coil in a magnetic resonance imaging device, so as to acquire a second uniformity enhancement image. The method may further comprise: dividing the second uniformity enhancement image by a spatial signal distribution value resulting from a field strength distribution of a transmitting radio-frequency field, so as to acquire a third uniformity enhancement image.Type: ApplicationFiled: October 31, 2017Publication date: May 3, 2018Inventors: Yongchuan Lai, Xiaoli Zhao, Weiwei Zhang, Stephen Joseph Garnier, Lisha Nie, Pengfei Lu, Hongbin Wang