Patents by Inventor Changging Wang

Changging 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).

  • Publication number: 20190145603
    Abstract: A light distribution module configured to control a light distribution of a light source is provided. The light distribution module includes a lens and an optical cover. The lens has a first light-incident surface, a first light-emitting surface opposite to the first light-incident surface, and an accommodating recess located at a side of the first light-incident surface, wherein the accommodating recess is configured to contain the light source. The optical cover covers the lens and has a second light-incident surface and a second light-emitting surface opposite to the second light-incident surface, wherein the second light-incident surface is located between the first light-emitting surface and the second light-emitting surface, and the second light-incident surface has a plurality of sub-curved surfaces. Boundaries between adjacent sub-curved surfaces are bent-shaped with respect to the adjacent sub-curved surfaces.
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Applicants: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology Corporation
    Inventors: Wei-Wen Shih, Shih-Chang Wang
  • Patent number: 10285157
    Abstract: A disclosed example apparatus receives a tag transmission signal from a tag at a receiver, wherein the tag transmission signal comprises a series of pulses; determines a coarse estimate of a time-of-arrival (TOA) of the tag transmission signal based on a detection of a pulse of the series of pulses in an adjustable coarse timing window, wherein the coarse estimate is based on a plurality of coarse timing windows; determines a fine estimate of the TOA based on a detection of the pulse in at least one of a parallel set of fine timing windows; and determines a sub-window resolution of the TOA based on at least one detection transition between consecutive fine receiver windows of at least one of a plurality of pulses and a weighted average of the TOA for each pulse of the series of pulses.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: May 7, 2019
    Assignee: Zebra Technologies Corporation
    Inventors: Edward A. Richley, Belinda Turner, Chang Wang, Aitan Ameti
  • Patent number: 10261169
    Abstract: The present invention provides methods for an active RFID tag target location system that provides for an iterative recalculating of a target location estimate by successively testing receiver TOA and DTOA error measurements and discarding outlier receivers. The present invention works to reduce the erratic effects that multipath channel interference and random noise play in target location systems due to incorrect identification of the main pulse of the transmit signal. In addition to providing for a greater accuracy and consistency in a TOA-based target location system, the method also provides for an opportunity to reduce a transmission bandwidth associate with the TOA transmission by the multiple receivers. The method may be considered a post-processing element, as the determination of TOA and DTOA may require a real-time calculation, where the timing constraints for the ensuing target location estimate may be less severe.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: April 16, 2019
    Assignee: Zebra Technologies Corporation
    Inventors: Edward A. Richley, Belinda Turner, Chang Wang
  • Publication number: 20190103399
    Abstract: A display panel and a display device including the same are disclosed. The display panel includes: a substrate; plural scan lines disposed on the substrate, wherein the plural scan lines extend along a first direction; and a common electrode disposed on the substrate, wherein the common electrode includes a through hole having a curved edge, wherein the through hole overlaps at least a portion of one of the plural scan lines along a direction perpendicular to a surface of the substrate.
    Type: Application
    Filed: December 4, 2018
    Publication date: April 4, 2019
    Inventors: Ying-Jen CHEN, An-Chang WANG, Hsia-Ching CHU, Ming-Chien SUN
  • Patent number: 10243437
    Abstract: A permanent magnet rotor and a permanent magnet rotary assembly are provided. The permanent magnet rotor includes a rotor core, a plurality of permanent magnets and a non-magnetic retaining ring. The rotor core is magnetically permeable. The rotor core has an outer surface and a plurality of dovetail grooves on the outer surface. The permanent magnets are respectively disposed in the plurality of dovetail grooves. The non-magnetic retaining ring is inserted over the rotor core. The plurality of permanent magnets are surrounded by the non-magnetic retaining ring. The non-magnetic retaining ring is magnetically impermeable.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 26, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kun-Yi Liang, Tse-Liang Hsiao, Chien-Chang Wang
  • Patent number: 10236935
    Abstract: There is provided a capacitive communication system including an object and a capacitive touch panel. The object includes a plurality of induction conductors configured to have different potential distributions at different time intervals by modulating respective potentials thereof. The capacitive touch panel includes a plurality of sensing electrodes configured to form a coupling electric field with the induction conductors to detect the different potential distributions at the different time intervals. When the different potential distributions match a predetermined agreement between the object and the capacitive touch panel, a near field communication is formed between the object and the capacitive touch panel.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: March 19, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Yung-Wei Chen, Yen-Chang Wang, Yen-Min Chang, Hsin-Chia Chen
  • Publication number: 20190079109
    Abstract: A detecting method for repetitive motion includes receiving a plurality of accelerated velocities, receiving a plurality of angular velocities, determining a plurality of stationary points according to the accelerated velocities, determining a plurality of motion periods according to the stationary points, wherein the motion periods separately correspond to different sets of the angular velocities, and clustering the motion periods according to differences among the different sets of angular velocities corresponding to the motion periods.
    Type: Application
    Filed: November 12, 2018
    Publication date: March 14, 2019
    Inventors: Jiaw-Chang WANG, I-Chien LIU, Shih-Yen KU
  • Publication number: 20190064425
    Abstract: A light guide film includes at least one wedge-shaped light incident portion and a light exit sheet. The wedge-shaped light incident portion has a light incident side surface and a connection side opposite to the light incident side surface. A thickness at the light incident side surface of the wedge-shaped light incident portion is greater than a thickness at the connection side of the wedge-shaped light incident portion. The light exit sheet is connected to the connection side and extends from the connection side. The light exit sheet has a light exit surface. The wedge-shaped light incident portion protrudes from the light exit surface. The light incident side surface is for receiving a light. The light is emitted from the light exit surface. The light exit sheet and the wedge-shaped light incident portions are integrally formed into one.
    Type: Application
    Filed: August 21, 2018
    Publication date: February 28, 2019
    Applicant: Sichuan Longhua Film Co., Ltd
    Inventors: Rui-Min Diao, Yao-Chang Wang
  • Publication number: 20190056650
    Abstract: A projection screen of a head-up display has a projection surface and a back surface opposite to the projection surface. The projection surface is used for receiving an image beam projected by an image projection component and reflecting part of the image beam. The projection screen includes a photochromic layer disposed on the transmission path of the image beam. When an ambient light irradiates the back surface of the projection screen, the transmittance of the photochromic layer decreases as the intensity of the ambient light increases.
    Type: Application
    Filed: August 13, 2018
    Publication date: February 21, 2019
    Applicant: Sichuan Longhua Film Co., Ltd
    Inventors: Rui-Min Diao, Yao-Chang Wang
  • Patent number: 10208907
    Abstract: A lighting device including an upper casing, a light emitting diode (LED) light source, a first reflective plate and a packaging lens is disclosed. The upper casing includes a supporting member. The LED light source is disposed on the supporting member. The first reflective plate is disposed on the supporting member and is separated from the LED light source by a first distance. The first reflective plate and a normal line of a supporting surface of the supporting member form a first angle which is greater than 0° and smaller than 40°. The packaging lens is disposed on the supporting member and covers the LED light source and the first reflective plate.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: February 19, 2019
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, LITE-ON TECHNOLOGY CORPORATION
    Inventors: Shih-Chang Wang, Wei-Wen Shih, Pin-Hao Hsu
  • Publication number: 20190052815
    Abstract: A dual-camera image pick-up apparatus and an imaging capturing method thereof are provided. The dual-camera image pick-up apparatus includes a first camera, a second camera, a first buffer, a second buffer and an image signal processor (ISP). The second buffer is coupled to the second camera and configured to receive and temporarily store a raw file captured by the second camera. The ISP is coupled to the first camera, the second camera, the first buffer and the second buffer, and configured to respectively control the first camera and the second camera to capture image signals and output a first raw file and a second raw file, process the image signals in the first raw file to output a first image to the first buffer, and afterward receive the temporarily stored second raw file from the second buffer, and process the image signals in the second raw file to output a second image to the first buffer.
    Type: Application
    Filed: November 16, 2017
    Publication date: February 14, 2019
    Applicant: Altek Semiconductor Corp.
    Inventor: Chun-Chang Wang
  • Publication number: 20190036822
    Abstract: Embodiments of the present disclosure provide a routing control method, network device, and controller. The method may include the network device obtaining a route suppression request. The method may also include determining the second routing entry. Furthermore, the method may include setting a state of the second routing entry to a non-delivery state that is used to indicate that the second routing entry does not need to be delivered to a forwarding table. In the method, the network device may have a first routing entry and a second routing entry, an address prefix of the first routing entry is a first address prefix, an address prefix of the second routing entry is a second address prefix, a network segment to which the second address prefix belongs is a subset of a network segment to which the first address prefix belongs, and a mask in the second address prefix is greater than a mask in the first address prefix.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Inventors: Shunwan ZHUANG, Chang Wang, Nan Wu, Zhenbin Li, Hui Ni
  • Publication number: 20190035660
    Abstract: A purging device includes an intake module, an exhausting module, a first purge gas supplying module, a second purge gas supplying module, a control valve and a processing module. The processing module is electrically connected to the control valve, and is operable so as to control the control valve to allow flow of a first purge gas from the first purge gas supplying module into the intake module, while preventing flow of a second purge gas from the second purge gas supplying module into the intake module, or allow flow of the second purge gas from the second purge gas supplying module into the intake module, while preventing flow of the first purge gas from the first purge gas supplying module into the intake module.
    Type: Application
    Filed: June 4, 2018
    Publication date: January 31, 2019
    Inventors: Kuan-Ting LIN, Wang-Chang WANG
  • Patent number: 10181467
    Abstract: A display panel is disclosed, which includes: a substrate; plural scan lines disposed on the substrate and extending along a first direction; a first insulating layer disposed on the scan lines; plural data lines disposed on the first insulating layer and extending along a second direction; a second insulating layer disposed on the data lines; and a common electrode disposed on the second insulating layer and including a through hole; wherein, the through hole includes a first region and a second region, the first region has a first maximum width along the first direction, the second region has a second maximum width along the first direction, and a ratio of the second maximum width over the first maximum width is greater than 0 and less than 1.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: January 15, 2019
    Assignee: INNOLUX CORPORATION
    Inventors: Ying-Jen Chen, An-Chang Wang, Hsia-Ching Chu, Ming-Chien Sun
  • Publication number: 20190002014
    Abstract: Technical solutions are described for facilitating an electric power steering (EPS) system for providing a motor torque assist command. An example EPS system includes a first module configured to generate a regulation signal or a tuning signal based on a mode of operation of the eps system. The EPS system further includes a second module configured to generate a stability signal irrespective of the mode of operation of the eps system. The EPS system further includes a blending module configured to combine the stability signal with either the regulation signal or the tuning signal to generate an assist motor torque signal for the eps system.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 3, 2019
    Inventors: Shrenik P. Shah, Chang Wang
  • Publication number: 20190006752
    Abstract: A liquid-crystal antenna apparatus is provided. The liquid-crystal antenna apparatus includes: a liquid-crystal antenna unit and a control unit. The liquid-crystal antenna unit is configured to receive a wireless signal. The liquid-crystal antenna unit includes a plurality of microwave elements, and each of the microwave elements includes a first electrode, a second electrode opposite to the first electrode, and a liquid-crystal cell disposed between the first electrode and the second electrode. The control unit is electrically connected to the liquid-crystal antenna unit, and is configured to control the liquid-crystal antenna unit to form a first beam having a first direction. The control unit determines a source orientation of the wireless signal according to the wireless signal received by the liquid-crystal antenna unit, and controls the first direction of the first beam to direct toward the source orientation.
    Type: Application
    Filed: June 5, 2018
    Publication date: January 3, 2019
    Inventors: Chin-Lung TING, Chen-Chang WANG, Kuang-Hsiang LEE, Hsiu-Tung LIN
  • Patent number: 10161954
    Abstract: A detecting method for repetitive motion includes receiving a plurality of accelerated velocities, receiving a plurality of angular velocities, determining a plurality of stationary points according to the accelerated velocities, determining a plurality of motion periods according to the stationary points, wherein the motion periods separately correspond to different sets of the angular velocities, and clustering the motion periods according to differences among the different sets of angular velocities corresponding to the motion periods.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: December 25, 2018
    Assignee: HTC Corporation
    Inventors: Jiaw-Chang Wang, I-Chien Liu, Shih-Yen Ku
  • Publication number: 20180344034
    Abstract: A rotary positioning device for an armrest includes a positioning member, a base, a sliding member, and a detent member. The positioning member includes a plurality of first engaging recesses formed at a side edge thereof. The base is rotatably connected to the positioning member. The sliding member is slidably arranged in base and is selectively switchable between a locked position and an unlocked position. The detent member is movably arranged in the base and is selectively engaged with one of the plurality of first engaging recesses to correspond to the locked position or the unlocked position of the sliding member.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 6, 2018
    Inventor: Ching-Chang Wang
  • Patent number: 10145726
    Abstract: Provided is a fiber optic acoustic wave detection system, pertaining to the fiber optic sensing technical field. The system comprises a power output apparatus, a backward Rayleigh scattering principle-based first distributed sensing apparatus, a backward weak optical fiber grating reflection principle-based second distributed sensing apparatus, and a third distributed sensing apparatus. The first distributed sensing apparatus and the second distributed sensing apparatus are connected with the power output apparatus, respectively. The first distributed sensing apparatus and the second distributed sensing apparatus are connected with the third distributed sensing apparatus, respectively.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: December 4, 2018
    Assignee: Laser Institute of Shandong Academy of Science
    Inventors: Chen Wang, Ying Shang, Xiaohui Liu, Wen'an Zhao, Long Ma, Chang Li, Bing Cao, Jiasheng Ni, Chang Wang
  • Patent number: 10143310
    Abstract: A rotary positioning device for an armrest includes a positioning member, a base, a sliding member, and a detent member. The positioning member includes a plurality of first engaging recesses formed at a side edge thereof. The base is rotatably connected to the positioning member. The sliding member is slidably arranged in base and is selectively switchable between a locked position and an unlocked position. The detent member is movably arranged in the base and is selectively engaged with one of the plurality of first engaging recesses to correspond to the locked position or the unlocked position of the sliding member.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: December 4, 2018
    Assignee: Chuan Hsing Chemical Industry Co., Ltd.
    Inventor: Ching-Chang Wang