Patents by Inventor Weihu Wang

Weihu 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).

  • Patent number: 11917738
    Abstract: The present disclosure provides a dummy load control circuit and a lighting device. The dummy load control circuit and a dummy load module are connected in parallel with a power supply input end and the dummy load control circuit includes a first switch circuit having a first switch control module so the first switch is controlled to be turned off when the power supply input end is connected to a triac dimmer, and turned on when the power supply input end is not connected to the triac dimmer, a second switch circuit having a second switch control module controlling on/off of the second switch, and a constant voltage source providing a constant voltage so the dummy load module is turned on when the first switch and the second switch are turned off, and turned off when the first switch and/or the second switch are turned on.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: February 27, 2024
    Assignee: SAVANT TECHNOLOGIES LLC
    Inventors: Pan Yao, Weihu Chen, Aijun Wang, Yao Fu, Zhiyong Wang
  • Patent number: 9724041
    Abstract: Disclosed is a fingerstall oximeter comprising an upper housing (11), a middle housing (12), a lower housing (13) and a detection unit. The upper housing (11), the middle housing (12) and the lower housing (13) are connected in turn. The lower housing (13) is made of silica gel, and a finger accommodating chamber (14) for accommodating a finger to be measured is formed between the opposed surfaces of the lower housing (13) and the middle housing (12). The fingerstall oximeter has high measurement accuracy and small volume, and is easy to disassemble and carry.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: August 8, 2017
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventors: Shuhai Liu, Weihu Wang, Zuobin Li, Peng Wu, Wei Wang
  • Publication number: 20150234917
    Abstract: Methods, computer systems, and computer-storage medium for generating a per-document index used for semantic searching is provided. A document is received and parsed into a plurality of section. Each term in each section is translated in order to at least one of a cache index or a term identifier. Subsequent to translating the terms, each section is separately group encoded to generate the per-document index. The per-document index is stored in association with a data store.
    Type: Application
    Filed: April 30, 2015
    Publication date: August 20, 2015
    Inventors: YUE-SHENG LIU, XIAO-SONG YANG, HUI SHEN, WEIHU WANG, JOHN G. BENNETT
  • Patent number: 9069857
    Abstract: Methods, computer systems, and computer-storage medium for generating a per-document index used for semantic searching is provided. A document is received and parsed into a plurality of section. Each term in each section is translated in order to at least one of a cache index or a term identifier. Subsequent to translating the terms, each section is separately group encoded to generate the per-document index. The per-document index is stored in association with a data store.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: June 30, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Yue-Sheng Liu, Xiao-Song Yang, Hui Shen, Weihu Wang, John G. Bennett
  • Publication number: 20150045638
    Abstract: Disclosed is a fingerstall oximeter comprising an upper housing (11), a middle housing (12), a lower housing (13) and a detection unit. The upper housing (11), the middle housing (12) and the lower housing (13) are connected in turn. The lower housing (13) is made of silica gel, and a finger accommodating chamber (14) for accommodating a finger to be measured is formed between the opposed surfaces of the lower housing (13) and the middle housing (12). The fingerstall oximeter has high measurement accuracy and small volume, and is easy to disassemble and carry.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 12, 2015
    Inventors: Shuhai Liu, Weihu Wang, Zuobin Li, Peng Wu, Wei Wang
  • Publication number: 20140149401
    Abstract: Methods, computer systems, and computer-storage medium for generating a per-document index used for semantic searching is provided. A document is received and parsed into a plurality of section. Each term in each section is translated in order to at least one of a cache index or a term identifier. Subsequent to translating the terms, each section is separately group encoded to generate the per-document index. The per-document index is stored in association with a data store.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: YUE-SHENG LIU, XIAO-SONG YANG, HUI SHEN, WEIHU WANG, JOHN G. BENNETT
  • Patent number: 8489166
    Abstract: The present invention discloses a soft gum fingerstall oximeter without pivot structure, the soft gum fingerstall oximeter comprises a soft gum fingerstall which can wraps around a finger closely with variations of the profile of the finger and causes a clamping force distributed on the clamped portion of the finger uniformly. An emission circuit board and a reception circuit board are provided in the soft gum fingerstall. The soft gum fingerstall of the oximeter is enclosed, which can shield light entering from a side.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: July 16, 2013
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventor: Weihu Wang
  • Patent number: 8386001
    Abstract: The present invention discloses a finger-clipped oximeter comprising an upper case (2) and a lower case (1), wherein one of the upper case (2) and the lower case (1) is provided with a guide post (12) which enables the upper case (2) and the lower case (1) to depart from and approach to each other vertically, the other of the upper case (2) and the lower case (1) is provided with a guide sleeve (13) which enables the upper case (2) and the lower case (1) to depart from and approach to each other vertically, and a return spring (9) is provided between an end of the guide post (12) and the case provided with the guide sleeve (13).
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: February 26, 2013
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventor: Weihu Wang
  • Patent number: 8369917
    Abstract: A finger-clipped oximeter includes an upper case (2) in which a measuring element (4), a data processing circuit, batteries (6) and a display (3) are provided, a rectangular through hole being provided in the upper case (2); a finger pressed plate (10) in which a measuring element is also provided, a finger inserting hole (11), a rectangular column (7) with a position corresponding to that of the rectangular through hole of the upper case (2); and a pair of connectors which are capable of ascending or descending, each of the connectors including one U-shaped connecting rod (8).
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: February 5, 2013
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventor: Weihu Wang
  • Publication number: 20120316413
    Abstract: Disclosed is a measurement apparatus that includes a main body, a signal processing module disposed inside the main body, a first data communication interface coupled with the signal processing module, and a signal collection module coupled with the signal processing module; the signal collection module functions to measure the physiological parameter signal and output the physiological parameter signal to the signal processing module; the signal processing module functions to process the physiological parameter signal to generate the physiological parameter data, and output the physiological parameter data to the terminal device via the first data communication interface, such that the terminal device can display the physiological parameter data. The user can directly conduct the physiological parameter measurement using the measurement apparatus according to the present invention without any specialized measurement equipment.
    Type: Application
    Filed: January 18, 2011
    Publication date: December 13, 2012
    Applicant: BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Shuhai Liu, Feng Xu, Weihu Wang, Peng Wu, Yanqing Zhang
  • Patent number: 8244336
    Abstract: A portable electrocardiograph, in which an exposed electrode is arranged on the end face of one end of a housing, characterized in that: the other end of the housing is of a comfortable structure for holding; the comfortable structure for holding is provided with the other exposed electrode; and the geometric center of the comfortable structure for holding is of an offset toward the other end of the housing and one of the two transverse sides, and a measuring key is arranged in the geometric center of the comfortable structure for holding. The present invention is of a humanized and unique holding structure shape, which ensures the wrist, the arm, and the trunk of the user are closed to form a relative space, thus allowing the user to measure in natural and correct posture so as to make sure the monitored data to be accurate and reliable.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: August 14, 2012
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventors: Weihu Wang, Lei Chen, Peng Wu
  • Patent number: 8095199
    Abstract: A portable electrocardiograph, characterized in that a clamping cover which tends to close automatically is provided on one end of a housing; a finger hole is provided between the clamping cover and the housing; a lower half of the inner wall of the finger hole is defined on the housing; an upper half of the inner wall of the finger hole is provided on the clamping cover; the lower half of the inner wall is provided with a first electrode; the other end of the housing is provided with a second electrode; and the back face of the housing is provided with a third electrode, in which the first electrode or the third electrode is a neutral electrode. According to the present invention, at least one portion of at least one of the middle finger, the so-called ring finger, and the little finger of the user's hand for grasping the electrocardiograph can contact the neutral electrode, such that the error of the measured result caused by electrical potential fluctuation on the measured person's body can be eliminated.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: January 10, 2012
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventors: Weihu Wang, Lei Chen, Peng Wu
  • Publication number: 20110190602
    Abstract: The present invention provides a method for measuring blood oxygen at a finger, comprising the following steps: 10) measuring blood oxygen content and finger temperature of the human body; 20) giving corresponding prompts according to the blood oxygen content and the finger temperature measured in the step 10). The present invention further provides a finger-clipped oximeter, comprising a control unit, a blood oxygen measurement unit, a finger temperature measurement unit, an output unit and a power management unit. The method for measuring blood oxygen at a finger and the finger-clipped oximeter provided by the present invention can measure the finger temperature of the human body, consider the measured finger temperature as a reference of the measured blood oxygen content of the human body and present it to the user together with the measured blood oxygen content, so as to assist the user in making a more accurate estimation on the blood oxygen content and the health condition of the person under test.
    Type: Application
    Filed: March 30, 2011
    Publication date: August 4, 2011
    Applicant: Beijing Choice Electronic Technology Co., Ltd.
    Inventors: Weihu Wang, Feng Xu, Yufei Xie, Yan Liu
  • Publication number: 20100331635
    Abstract: The present invention discloses a finger-clipped oximeter comprising: an upper case (2) in which a measuring element (4), a data processing circuit, batteries (6) and a display (3) are provided, a rectangular through hole being provided in the upper case (2); a finger pressed plate (10) in which a measuring element is also provided, a finger inserting hole (11) being formed between an upper surface of the finger pressed plate (10) and a lower surface of the upper case (2), a rectangular column (7) with a position corresponding to that of the rectangular through hole of the upper case (2) being provided on the finger pressed plate (10); and a pair of connectors which are capable of ascending or descending, each of the connectors including one U-shaped connecting rod (8), a middle portion of the U-shaped connecting rod (8) being a straight portion which extends through an edge portion on a side of the finger pressed plate (10), two arm portions of the U-shaped connecting rod (8) being inserted into the upper ca
    Type: Application
    Filed: May 20, 2008
    Publication date: December 30, 2010
    Applicant: BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD.
    Inventor: Weihu Wang
  • Publication number: 20100317944
    Abstract: The present invention discloses a finger-clipped oximeter comprising an upper case (2) and a lower case (1), wherein one of the upper case (2) and the lower case (1) is provided with a guide post (12) which enables the upper case (2) and the lower case (1) to depart from and approach to each other vertically , the other of the upper case (2) and the lower case (1) is provided with a guide sleeve (13) which enables the upper case (2) and the lower case (1) to depart from and approach to each other vertically, and a return spring (9) is provided between an end of the guide post (12) and the case provided with the guide sleeve (13).
    Type: Application
    Filed: May 8, 2008
    Publication date: December 16, 2010
    Applicant: BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD.
    Inventor: Weihu Wang
  • Publication number: 20100198028
    Abstract: The present invention discloses a soft gum fingerstall oximeter without pivot structure, the soft gum fingerstall oximeter comprises a soft gum fingerstall which can wraps around a finger closely with variations of the profile of the finger and causes a clamping force distributed on the clamped portion of the finger uniformly. An emission circuit board and a reception circuit board are provided in the soft gum fingerstall. The soft gum fingerstall of the oximeter is enclosed, which can shield light entering from a side.
    Type: Application
    Filed: March 21, 2008
    Publication date: August 5, 2010
    Applicant: BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD.
    Inventor: Weihu Wang
  • Publication number: 20100160753
    Abstract: A wrist blood pressure monitor with an oximeter, characterized in that the wrist blood pressure monitor and the oximeter are arranged on the same base; the length direction of the wrist blood pressure monitor is parallel to the width direction of an armband; and a finger hole of the oximeter is oriented to be vertical to the width direction of the armband. The wrist blood pressure monitor with the oximeter according to the present invention can measure the blood pressure and the blood oxygen at the same time, so that the user can not only operate conveniently, but also acquire more accurate measuring results; or the blood pressure and the blood oxygen are measured independently, so that the user can operate in great convenience.
    Type: Application
    Filed: August 27, 2007
    Publication date: June 24, 2010
    Applicant: Beijing Choice Electronic Technology Co., Ltd.
    Inventors: Weihu Wang, Lei Chen
  • Publication number: 20100036218
    Abstract: A blood oxygen saturation measuring apparatus comprising an upper shell, a lower shell, and an elastic restoring structure, characterized in that a mark is arranged on a lateral side surface of the upper and/or the lower shell; and the mark is provided to be in alignment with the vertical position of a photoelectric sensing chip which is arranged inside the shell. According to the present invention, the humanized mark is adopted, which can observe the measured position of the measured finger. Even if in the case of weak light environment or a lazy eye user, the accurate and reliable blood oxygen saturation data can be acquired.
    Type: Application
    Filed: February 8, 2007
    Publication date: February 11, 2010
    Applicant: BEIJING CHOICE ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Weihu Wang, Peng Wu, Lei Chen
  • Publication number: 20090299206
    Abstract: A portable electrocardiograph, in which an exposed electrode is arranged on the end face of one end of a housing, characterized in that: the other end of the housing is of a comfortable structure for holding; the comfortable structure for holding is provided with the other exposed electrode; and the geometric center of the comfortable structure for holding is of an offset toward the other end of the housing and one of the two transverse sides, and a measuring key is arranged in the geometric center of the comfortable structure for holding. The present invention is of a humanized and unique holding structure shape, which ensures the wrist, the arm, and the trunk of the user are closed to form a relative space, thus allowing the user to measure in natural and correct posture so as to make sure the monitored data to be accurate and reliable.
    Type: Application
    Filed: February 8, 2007
    Publication date: December 3, 2009
    Inventors: Weihu Wang, Lei Chen, Peng Wu
  • Patent number: D668340
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: October 2, 2012
    Assignee: Beijing Choice Electronic Technology Co., Ltd.
    Inventors: Wei Wang, Changbo Li, Weihu Wang