Patents by Inventor Yiwei Wang
Yiwei Wang 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).
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Patent number: 10921352Abstract: Apparatus and associated methods relate to configuring a circuit to sense current in a low-cost non-precision resistance, calibrating the circuit to correct inaccuracy measured in the sensed current, and measuring with the corrected circuit the precise current sensed in the low-cost non-precision resistance. In an illustrative example, the low-cost non-precision resistance may be a metal trace on a printed circuit board. The circuit may be calibrated, for example, over a range of currents or temperatures, permitting automatic adjustment to a wide range of non-precision resistance parameter values and environmental conditions. In some examples, correcting coefficients may be adapted to compensate for resistance non-linearities, which may include skin effect or self-heating. Some embodiments may verify the calibrated correction over a range of current and temperature.Type: GrantFiled: April 29, 2019Date of Patent: February 16, 2021Assignee: Chrontel Inc.Inventors: David Chee-Fai Soo, Mohammad Yunus, Yiwei Wang
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Publication number: 20210029283Abstract: A method, for correcting a rolling shutter phenomenon, includes obtaining a double fish-eye image to be processed using a photographing device; obtaining an image processing parameter including gyro data of the photographing device; calculating a rolling shutter phenomenon correcting parameter based on the image processing parameter; and correcting the rolling shutter phenomenon with respect to the double fish-eye image in a spherical-coordinate system using the rolling shutter phenomenon correcting parameter.Type: ApplicationFiled: July 17, 2020Publication date: January 28, 2021Applicant: Ricoh Company, Ltd.Inventors: Yiwei WANG, Liyan LIU, Wei WANG
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Publication number: 20210015913Abstract: The present invention relates to the preparation of the compound immunopotentiator and the application thereof in a foot-and-mouth disease vaccine of pigs. According to the present invention, the foot-and-mouth disease vaccine of pigs is taken as a research subject, and on this basis, several immunopotentiators having obvious immunopotentiating effects are selected for the compound immunopotentiator, and an antigen/vaccine is mixed with the immunopotentiator to prepare a vaccine-immunized pig. An animal experiment result shows that the present invention has obvious immunopotentiating effects. After immunizing the vaccine containing the compound immunopotentiator, a window period for antibody production can be significantly shortened to 7 days; a LPB-ELISA antibody titer is significantly improved, and an antibody pass rate is significantly increased; an immune protection period is also significantly extended, at least up to 7 months.Type: ApplicationFiled: September 28, 2020Publication date: January 21, 2021Inventors: Jin CHEN, Xiaoming YU, Qisheng ZHENG, Liting HOU, Yiwei WANG, Yuanpeng ZHANG, Xuwen QIAO, Jibo HOU
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Publication number: 20200261570Abstract: A compound immunopotentiator and application thereof relates to the preparation of the compound immunopotentiator and the application thereof in a foot-and-mouth disease vaccine of pigs. The foot-and-mouth disease vaccine of pigs is taken as a research subject, and on this basis, several immunopotentiators having obvious immunopotentiating effects are selected for the compound immunopotentiator, and an antigen/vaccine is mixed with the immunopotentiator to prepare a vaccine-immunized pig. After immunizing the vaccine containing the compound immunopotentiator, a window period for antibody production can be significantly shortened to 7 days; a LPB-ELISA antibody titer is significantly improved, and an antibody pass rate is significantly increased; an immune protection period is also significantly extended, at least up to 7 months; and the compound immunopotentiator is safe, and has no obvious side effects of immunity.Type: ApplicationFiled: July 28, 2017Publication date: August 20, 2020Inventors: Jin CHEN, Xiaoming YU, Qisheng ZHENG, Liting HOU, Yiwei WANG, Yuanpeng ZHANG, Xuwen QIAO, Jibo HOU
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Publication number: 20200201946Abstract: The present invention discloses an accurate and efficient modeling method for the terahertz branch waveguide directional coupler, which uses mode matching method (MMM) to take into account the effects on the coupler field distribution caused by the branch structure discontinuity, combines odd and even mode analysis method to further simplify the derivation process, and finally obtains a simplified and accurate calculation formula of the coupling degree, which the latter produces a new conclusion that when the work frequency of the branch waveguide directional coupler is determined, the coupling degree thereof is determined by the sum of the branch widths. The modeling method of the present invention has the characteristics of simplicity, which can greatly shorten the modeling time and improve the efficiency of the modeling compared with the traditional modeling method. In addition, the modeling method has the characteristics of universality.Type: ApplicationFiled: June 25, 2019Publication date: June 25, 2020Inventors: Bo ZHANG, Zhongqian NIU, Yang LIU, Yinian FENG, Tianchi ZHOU, Yilin YANG, Dongfeng JI, Yiwei WANG, Zhi CHEN, Yaxin ZHANG, Yong FAN
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Patent number: 10674086Abstract: Image processing method and device are disclosed. The image processing method is inclusive of a step of obtaining a target image; a step of performing motion estimation on the target image so as to attain motion paths; a step of determining, on the basis of the motion paths, whether there exists a fluctuation meeting a predetermined requirement in the target image; and a step of taking, if there exists a fluctuation meeting the predetermined requirement in the target image, the target image as a reference image. The reference image is utilized to carry out inter frame motion estimation with respect to the respective images acquired.Type: GrantFiled: March 19, 2018Date of Patent: June 2, 2020Assignee: Ricoh Company, Ltd.Inventors: Yiwei Wang, Lingyan Liang
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Publication number: 20190377012Abstract: Apparatus and associated methods relate to configuring a circuit to sense current in a low-cost non-precision resistance, calibrating the circuit to correct inaccuracy measured in the sensed current, and measuring with the corrected circuit the precise current sensed in the low-cost non-precision resistance. In an illustrative example, the low-cost non-precision resistance may be a metal trace on a printed circuit board. The circuit may be calibrated, for example, over a range of currents or temperatures, permitting automatic adjustment to a wide range of non-precision resistance parameter values and environmental conditions. In some examples, correcting coefficients may be adapted to compensate for resistance non-linearities, which may include skin effect or self-heating. Some embodiments may verify the calibrated correction over a range of current and temperature.Type: ApplicationFiled: April 29, 2019Publication date: December 12, 2019Inventors: David Chee-Fai Soo, Mohammad Yunus, Yiwei Wang
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Patent number: 10324241Abstract: The present invention discloses a crystal coating optical low pass filter, which includes a UV-IR cut-off film, a crystal plate, an ink layer, and an AR film. The UV-IR cut-off film can be replaced with an IR film. By coating the crystal plate with ink having infrared absorbing effect to form an ink layer, the present invention possesses both the birefringence characteristic of the crystal and the effect similar to infrared absorbing glass. Compared with the traditional OLPF using infrared absorbing glass, the thickness of the product is reduced and the situation that the infrared absorb glass is fragile and has a poor resistance to drop is significantly improved. The present invention can be used in smartphones, digital cameras, in-vehicle cameras, security cameras and has a large space of marketing.Type: GrantFiled: August 22, 2017Date of Patent: June 18, 2019Assignee: ZHEJIANG MDK MODERN OPTICAL CO., LTDInventors: Wenzhi Ge, Wenqin Ge, Yiwei Wang, Hirokazu Yajima, Leilei Shan
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Patent number: 10317591Abstract: The present invention discloses a coated narrow-band filter having an absorbent material. Two sides of the substrate are respectively an A-side and a B-side, a cut-off layer is coated or screen printed on the A-side, wherein lights having a wavelength within a first band are allowed to pass through the cut-off layer. The substrate is an absorbent layer, or an absorbent layer is provided on the B-side of the substrate. The absorbent layer is made of an absorbent material, lights having a wavelength within a second band are allowed to pass through the absorbent layer. The first band partially overlaps with the second band. For processing convenience, the coated narrow-band filter having an absorbent material is provided at different angles and with small angle of incidence.Type: GrantFiled: November 28, 2017Date of Patent: June 11, 2019Assignee: HANGZHOU MEIDIKAI OPTO ELECTRONICS CO., LTD.Inventors: Wenzhi Ge, Yiwei Wang, Hirokazu Yajima, Ching Sheng Weng
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Publication number: 20190143517Abstract: Various embodiments of systems and methods for collision-free trajectory planning in human-robot interaction through hand movement prediction from vision are disclosed.Type: ApplicationFiled: November 14, 2018Publication date: May 16, 2019Applicant: Arizona Board of Regents on Behalf of Arizona State UniversityInventors: Yezhou Yang, Wenlong Zhang, Yiwei Wang, Xin Ye
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Publication number: 20190041560Abstract: The present invention discloses a coated narrow-band filter having an absorbent material. Two sides of the substrate are respectively an A-side and a B-side, a cut-off layer is coated or screen printed on the A-side, wherein lights having a wavelength within a first band are allowed to pass through the cut-off layer. The substrate is an absorbent layer, or an absorbent layer is provided on the B-side of the substrate. The absorbent layer is made of an absorbent material, lights having a wavelength within a second band are allowed to pass through the absorbent layer. The first band partially overlaps with the second band. For processing convenience, the coated narrow-band filter having an absorbent material is provided at different angles and with small angle of incidence.Type: ApplicationFiled: November 28, 2017Publication date: February 7, 2019Applicant: HANGZHOU MEIDIKAI OPTO ELECTRONICS CO.,LTDInventors: Wenzhi Ge, Yiwei Wang, Hirokazu Yajima, Ching Sheng Weng
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Publication number: 20180359418Abstract: Image processing method and device are disclosed. The image processing method is inclusive of a step of obtaining a target image; a step of performing motion estimation on the target image so as to attain motion paths; a step of determining, on the basis of the motion paths, whether there exists a fluctuation meeting a predetermined requirement in the target image; and a step of taking, if there exists a fluctuation meeting the predetermined requirement in the target image, the target image as a reference image. The reference image is utilized to carry out inter frame motion estimation with respect to the respective images acquired.Type: ApplicationFiled: March 19, 2018Publication date: December 13, 2018Applicant: Ricoh Company, Ltd.Inventors: Yiwei WANG, Lingyan Liang
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Publication number: 20180058636Abstract: A screw-free modular design lighting fixture with interchangeable parts includes a lens cover, a round cover, a PCB, and the heat sink that make up the module, as well as a driver, a fastener on the driver, a frame, and a push release mechanism to secure the driver onto the module, then the module onto the frame to form the fixture. The lighting fixture uses push-release, clip on, twist on, click in, slide in, hinge-on, and other screw-free mechanisms to assemble, interchange, and maintain the module, frame, and drivers, in order to change the applications, light distributions, wattages, voltage, and other needs of the fixture.Type: ApplicationFiled: August 24, 2017Publication date: March 1, 2018Applicant: XIAMEN HOLLY LITE CO., LTD.Inventors: Yiwei WANG, Hongyan WANG, Shifu CHEN
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Publication number: 20170371080Abstract: The present invention discloses a crystal coating optical low pass filter, which includes a UV-IR cut-off film, a crystal plate, an ink layer, and an AR film. The UV-IR cut-off film can be replaced with an IR film. By coating the crystal plate with ink having infrared absorbing effect to form an ink layer, the present invention possesses both the birefringence characteristic of the crystal and the effect similar to infrared absorbing glass. Compared with the traditional OLPF using infrared absorbing glass, the thickness of the product is reduced and the situation that the infrared absorb glass is fragile and has a poor resistance to drop is significantly improved. The present invention can be used in smartphones, digital cameras, in-vehicle cameras, security cameras and has a large space of marketing.Type: ApplicationFiled: August 22, 2017Publication date: December 28, 2017Applicant: ZHEJIANG MDK MODERN OPTICAL CO.,LTDInventors: Wenzhi Ge, Wenqin Ge, Yiwei Wang, Hirokazu Yajima, Leilei Shan
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Patent number: 9841779Abstract: A reference signal generator used with a switching mode power supply which converts an input voltage to an output voltage. The reference signal generator provides a reference signal consisting of a constant voltage signal and a variable voltage signal which is varying according to a duty cycle of the switching mode power supply during a startup period of the switching mode power supply and is varying according to a ratio of the input voltage at an end of the startup period to the input voltage of real time after the startup period.Type: GrantFiled: November 10, 2015Date of Patent: December 12, 2017Assignee: Monolithic Power Systems, Inc.Inventors: Yiwei Wang, Yike Li
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Publication number: 20160147248Abstract: A reference signal generator used with a switching mode power supply which converts an input voltage to an output voltage. The reference signal generator provides a reference signal consisting of a constant voltage signal and a variable voltage signal which is varying according to a duty cycle of the switching mode power supply during a startup period of the switching mode power supply and is varying according to a ratio of the input voltage at an end of the startup period to the input voltage of real time after the startup period.Type: ApplicationFiled: November 10, 2015Publication date: May 26, 2016Inventors: Yiwei Wang, Yike Li
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Publication number: 20110165444Abstract: A Li-ion power cell includes at least two winding cores produced by a winding process. Each of the winding cores has an anode tab and a cathode tab. The anode tabs and the cathode tabs of the respective winding cores are connected in parallel, respectively. The winding core is of cylindrical or diamond shape. The Li-ion power cell further includes a housing, an anode pole and a cathode pole which are disposed on the housing. The anode tabs of the respective winding cores are connected in parallel and then electrically connected to the anode pole, and the cathode tabs of the respective winding cores are connected in parallel and then electrically connected to the cathode pole.Type: ApplicationFiled: April 28, 2010Publication date: July 7, 2011Applicant: TIANJIN EV ENERGIES CO., LTD.Inventors: Chuntai Guo, Dingkai Yuan, Yiwei Wang, Chiwei Wang
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Patent number: 7129988Abstract: An adaptive intra-field algorithm to de-interlace video data uses two line memories to implement a median filter that can use multiple data points on adjacent lines of display. In a median-mode, the filter outputs the median of the input data to create the value for a location on the intermediate line and can decrease image blurring. But if examination of the two adjacent pixels on two adjacent scan lines is small, as in the case of a vertical image line, the filter operates as a line average filter, to avoid creating image artifacts.Type: GrantFiled: February 25, 2003Date of Patent: October 31, 2006Assignee: ChronTel, Inc.Inventors: Yiwei Wang, Siyun Li
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Publication number: 20030160895Abstract: An adaptive intra-field algorithm to de-interlace video data uses two line memories to implement a median filter that can use multiple data points on adjacent lines of display. In a median-mode, the filter outputs the median of the input data to create the value for a location on the intermediate line and can decrease image blurring. But if examination of the two adjacent pixels on two adjacent scan lines is small, as in the case of a vertical image line, the filter operates as a line average filter, to avoid creating image artifacts.Type: ApplicationFiled: February 25, 2003Publication date: August 28, 2003Inventors: Yiwei Wang, Siyun Li