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).

  • Patent number: 11198247
    Abstract: An additive manufacturing (AM) system and method configured to fabricate a 3D printed object from a composition is provided. The AM system comprises a vat assembly having a vat, a pump, and a density control reservoir and an AM assembly having a blade system and a build system. The pump system pumps the composition from the vat, having a first and second fluid outlet and at least one perforated outlet extension attached thereto, to the density control reservoir and then back into the vat through an inlet conduit. The at least one perforated outlet extension has a tube attachment mechanism and at least one elongated perforated tube assembly communicating therewith. The blade system has a dispersing blade and cutting blade, dispersing the composition from the inlet conduit toward and throughout a central top level of the composition and cutting a top surface of the composition, respectively.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 14, 2021
    Assignee: National Taipei University of Technology
    Inventors: Jia Chang Wang, Tseng Pu Yang, Hitesh Dommati
  • Publication number: 20210373225
    Abstract: A front light source module includes a light guide assembly and a light source assembly. The light guide assembly includes a light guide body and optical microstructures. The light guide body includes a first optical surface, a second optical surface and a light incident surface. The first optical surface and the second optical surface are opposed to each other. The light incident surface is connected between the first optical surface and the second optical surface. The first optical surface is close to a viewer side. The optical microstructures are formed on at least one of the first optical surface and the second optical surface. Each optical microstructure has an inclined side surface relatively inclined to one of the first optical surface and the second optical surface. The light source assembly is disposed beside the light incident surface. A reflective display device having the front light source module is also provided.
    Type: Application
    Filed: May 25, 2021
    Publication date: December 2, 2021
    Inventors: PO-HUNG YAO, YAO-CHANG WANG
  • Publication number: 20210372589
    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: August 11, 2021
    Publication date: December 2, 2021
    Applicants: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology Corporation
    Inventors: Wei-Wen Shih, Shih-Chang Wang
  • Patent number: 11189610
    Abstract: A substrate structure includes at least one detachable first substrate unit and a substrate body. The detachable first substrate unit includes a plurality of corners and a plurality of first engagement portions. Each of the first engagement portions is disposed at each of the corners of the detachable first substrate unit. The substrate body includes a plurality of second substrate units, at least one opening and a plurality of second engagement portions. The opening is substantially defined by a plurality of sidewalls of the second substrate units, and includes a plurality of corners. Each of the second engagement portions is disposed at each of the corners of the opening. The detachable first substrate unit is disposed in the opening, and the second engagement portions are engaged with the first engagement portions.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: November 30, 2021
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Li-Chuan Tsai, Wu Chang Wang
  • Publication number: 20210356642
    Abstract: A front light source module includes a light guide assembly and a light source assembly. The light guide assembly includes a light guide body and surface optical microstructures. The light guide body includes a first optical surface, a second optical surface opposite to the first optical surface, and a light incident surface. The light incident surface is connected between the first and second optical surfaces. The first optical surface is close to a viewer. The surface optical microstructures are embedded in the light guide body. Each surface optical microstructure includes an inclined surface and a transflective layer. The inclined surface is relatively inclined to the first optical surface or the second optical surface. The transflective layer is disposed on the inclined surface. The light source assembly is disposed beside the light incident surface. A reflective display device adopting the front light source module is also provided.
    Type: Application
    Filed: April 22, 2021
    Publication date: November 18, 2021
    Inventors: PO-HUNG YAO, YAO-CHANG WANG
  • Publication number: 20210327328
    Abstract: Disclosed are a display apparatus and a brightness adjustment method for the display apparatus, which relate to the technical field of display. The display apparatus is configured to enable display of a display screen to be uniform, thus improving the display effect. The method comprises: determining a first total display duration of a first sub-screen of the display screen, and determining a second total display duration of a second sub-screen of the display screen; determining that the first total display duration and the second total display duration meet a preset condition; and adjusting a driving current of the first sub-screen to a first target driving current, and/or adjusting a driving current of the second sub-screen to a second target driving current, such that a difference between the display brightness of the first sub-screen and the display brightness of the second sub-screen is within a pre-determined difference range.
    Type: Application
    Filed: May 11, 2020
    Publication date: October 21, 2021
    Inventors: Qianqian LIU, Bin ZHANG, Chang WANG, Tiegang WANG, Xiao MA, Hui ZHANG
  • Publication number: 20210300309
    Abstract: A control method for bicycle anti-lock brake device includes determining whether a wheel deceleration of the bicycle is larger than or equal to a deceleration threshold. When the wheel deceleration of the bicycle is determined to be smaller than the deceleration threshold, the anti-lock brake device of the bicycle is inactivated. When the wheel deceleration of the bicycle is determined to be larger than or equal to the deceleration threshold, determining whether a wheel speed of the bicycle is larger than or equal to a wheel speed threshold. When the wheel speed of the bicycle is determined to be larger than or equal to the wheel speed threshold, the anti-lock brake device of the bicycle is activated. when the wheel speed of the bicycle is determined to be smaller than the wheel speed threshold, the anti-lock brake device of the bicycle is inactivated.
    Type: Application
    Filed: January 26, 2021
    Publication date: September 30, 2021
    Inventors: Po-Hsien HUANG, Tzu-Chang WANG
  • Patent number: 11125414
    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: Grant
    Filed: November 14, 2018
    Date of Patent: September 21, 2021
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology Corporation
    Inventors: Wei-Wen Shih, Shih-Chang Wang
  • Publication number: 20210276654
    Abstract: A measuring device includes an acceleration sensing module, a signal acquisition module, and a pedaling frequency. The acceleration sensing module is configured to produce an acceleration signal according to an acceleration of a bicycle. The acceleration signal is associated with an acceleration waveform information. The signal acquisition module is electrically connected to the acceleration sensing module. The signal acquisition module acquires the acceleration waveform information from the acceleration signal according to a predetermined parameter. The pedaling frequency calculation module is electrically connected to the signal acquisition module. The pedaling frequency calculation module calculates a pedaling frequency data according to the acceleration waveform information. In addition, a measuring method is also provided.
    Type: Application
    Filed: January 25, 2021
    Publication date: September 9, 2021
    Inventors: Tzu-Chang Wang, Po-Hsien Huang
  • Patent number: 11106881
    Abstract: Disclosed are a print recognition module and a display device. The print recognition module includes a light guide structure including a light guide plate and an optical path adjusting component. The light guide plate includes a light incident surface and a light emergent surface arranged oppositely, and side surfaces connected between the light incident surface and the light emergent surface. A first optical sensor at a side of the light emergent surface, and a second optical sensor arranged corresponding to at least one of the side surfaces are provided. The optical path adjusting component is disposed between the side face and the second optical sensor, and includes a reflector. An included angle between the reflector and the light incident surface is an acute angle, and the reflector reflects at least part of light incident from the light incident side to the second optical sensor.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: August 31, 2021
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xiao Ma, Bin Zhang, Chang Wang, Qianqian Liu
  • Publication number: 20210247548
    Abstract: An anti-fog lens including a lens and an anti-fog layer. The lens having a first surface and a second surface. The anti-fog layer is disposed on a side of the first surface and a side of the second surface, and includes a modified cellulose triacetate (TAC).
    Type: Application
    Filed: August 24, 2020
    Publication date: August 12, 2021
    Inventors: Chen-Chang Wang-Lee, Tak Lung Delon Cheng
  • Publication number: 20210237944
    Abstract: A non-equal length open-identification container includes: a cover, one side of a top surface thereof extended with an elastic sheet having a predetermined extension length, and an end thereof having a first coupling element facing down; a box, one side of a top surface thereof horizontally extended with a flange having a notch, the flange projected with a stopping portion, and the cover adapted to be in combination with a top portion of the box, allowing a bottom surface of the sheet to be in contact with a top surface of the stopping portion; and a second coupling element, having a groove and in combination with the notch with a dotted broken line, the first coupling element offset from the groove after the cover is in combination with the box, the sheet pressed down, allowing the first coupling element to be in engagement with the groove.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 5, 2021
    Inventor: Tong-Chang Wang
  • Patent number: 11082212
    Abstract: The present disclosure provides a system and a method for communication service verification and a verification server thereof. The method includes: obtaining a light code from a light code transmission device through a user device; demodulating the light code by the user device to generate a cipher; receiving a service request sent from the user device by a service system server; receiving a verification request sent from the user device or the service system server by a verification server; and retrieving a decryption key by the verification server based on the verification request, so as to decode the cipher in the verification request using the decryption key and obtain a decoding result.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: August 3, 2021
    Assignee: Industrial Technology Research Institute
    Inventors: Xin-Lan Liao, Lih-Guong Jang, Yi-Chang Wang, Yi-Yuan Chen
  • Publication number: 20210225259
    Abstract: A data transmission method comprises: receiving and storing image data, wherein the image data comprises first data and second data, the first data is encrypted verification data, and the second data is original data; comparing the first data with the second data in stored image data; replacing the second data with the first data, if the second data and the first data are inconsistent.
    Type: Application
    Filed: December 24, 2019
    Publication date: July 22, 2021
    Inventors: Chang WANG, Tiegang WANG, Hui ZHANG, Xiao MA, Qianqian LIU, Bin ZHANG
  • Publication number: 20210224502
    Abstract: The present application relates to a fingerprint identification module and a display device. The fingerprint identification module includes: a first lens assembly; a second lens assembly with a primary optical axis not parallel to a primary optical axis of the first lens assembly; a reflecting mirror assembly, including a reflecting mirror and a rotating shaft coupled to the reflecting mirror, wherein the rotating shaft can drive the reflecting mirror to rotate, and the reflecting mirror includes a reflecting surface; and a light-sensitive element located at a light exiting side of the second lens assembly.
    Type: Application
    Filed: December 16, 2019
    Publication date: July 22, 2021
    Inventors: Qianqian LIU, Bin ZHANG, Chang WANG, Tiegang WANG, Xiao MA, Fuzheng XIE
  • Patent number: 11051680
    Abstract: An endoscope stereo imaging device includes an endoscope lens assembly and an imaging module. The imaging module includes first, second and third lens assemblies, a beam splitter, first and second image sensors and a micro lens array. A light beam from the endoscope lens assembly is transmitted to the beam splitter after passing through the first lens assembly and is split into first and second portions of the light beam. The first portion light beam is transmitted to the first image sensor via the second lens assembly and forms a two-dimensional image. The second portion light beam is transmitted to the second image sensor via the third lens assembly and the micro lens array sequentially and forms a first three-dimensional image.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 6, 2021
    Assignee: Industrial Technology Research Institute
    Inventors: Chy-Lin Wang, Yen-Chang Wang, Chih-Cheng Hsu, Hsiao-Yue Tsao
  • Patent number: 11054302
    Abstract: The present invention provides an event positioning method, device and application in a distributed fiber vibration monitoring system. When a location at which an event occurs in a sensing fiber is to be positioned, an interference field signal having a maximum optical power is obtained by comparing optical powers of respective interference field signals corresponding to backward Rayleigh scattering lights that are generated when a pulse light is transmitted in the sensing fiber. Subsequently, a sensing location of the interference field signal having the maximum optical power is calculated. Finally, the location at which the event occurs in the sensing fiber is determined, according to the sensing location and a location distribution pattern of the event. According to the positioning method provided in the present invention, by screening the interference field signals and then calculating the event location, the spatial resolution is not determined merely by the pulse width of the optical signal.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: July 6, 2021
    Assignee: Laser Institute of Shandong Academy of Science
    Inventors: Ying Shang, Chen Wang, Chang Wang, Jiasheng Ni, Chang Li, Wenan Zhao, Bing Cao, Sheng Huang, Xiaohui Liu, Yingying Wang
  • Publication number: 20210198026
    Abstract: The disclosure provides a vacuum packaging product. The vacuum packaging product includes an outer packaging member and a cartridge configured for use in an electronic cigarette. The cartridge is filled with an aerosol-forming substrate. The cartridge is packed and hermetically sealed in the outer packaging member in a vacuum state. Since the outer packaging member is in a vacuum state, a pressure difference exists between the inside and the outside of the outer packaging member due to the vacuum state of the outer packaging member, and the outer packaging member is contracted, so as to better seal the cartridge that has been filled with the aerosol-forming substrate, and to avoid leakage caused by possible high temperature, high pressure or negative pressure during transportation.
    Type: Application
    Filed: January 27, 2021
    Publication date: July 1, 2021
    Applicant: CHANGZHOU PATENT ELECTRONIC TECHNOLOGY CO., LTD
    Inventors: Weihua QIU, Chang WANG
  • Publication number: 20210192174
    Abstract: Disclosed are a print recognition module and a display device. The print recognition module includes a light guide structure including a light guide plate and an optical path adjusting component. The light guide plate includes a light incident surface and a light emergent surface arranged oppositely, and side surfaces connected between the light incident surface and the light emergent surface. A first optical sensor at a side of the light emergent surface, and a second optical sensor arranged corresponding to at least one of the side surfaces are provided. The optical path adjusting component is disposed between the side face and the second optical sensor, and includes a reflector. An included angle between the reflector and the light incident surface is an acute angle, and the reflector reflects at least part of light incident from the light incident side to the second optical sensor.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 24, 2021
    Inventors: Xiao MA, Bin ZHANG, Chang WANG, Qianqian LIU
  • Patent number: D926397
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: July 27, 2021
    Assignee: THE TORO COMPANY
    Inventors: Philip C. Dretzka, Nicholas Suchoza, Jianlong Chen, Chang Wang