Patents by Inventor Chang Li

Chang Li 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: 11583183
    Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: February 21, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Chang Li, Ren-Hau Gu
  • Publication number: 20230038780
    Abstract: Systems and methods are described for effectively managing and maintaining a communication network by monitoring communications to detect a loop condition, and effectively route the communication to one or more destinations known to reduce or eliminate the occurrence of a looping condition.
    Type: Application
    Filed: April 21, 2022
    Publication date: February 9, 2023
    Inventors: Chia-Chang Li, Mohamed Barache, Robert Lambardia
  • Patent number: 11575794
    Abstract: Multiple service providers may share a voice over internet protocol (VOIP) infrastructure. A request to route a VOIP call may be received and processed to route the VOIP call. Information in the VOIP request may be used to determine a service provider and routing rule for routing the VOIP call, and the VOIP call may be routed accordingly.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: February 7, 2023
    Assignee: Comcast Cable Communications, LLC
    Inventors: Chia-Chang Li, Eric Wong, Vengatarajulu Rajasekar, Satish Sampangiramiah
  • Publication number: 20230031864
    Abstract: An electrically controlled polarization rotator is disclosed. The electrically controlled polarization rotator includes two substrates and a liquid crystal layer located between the two substrates. The two substrates have a homogeneous alignment and a homeotropic alignment respectively. A distance between the two substrates is a liquid crystal thickness. A switching electric field which is adjustable is provided between the two substrates. A polarized light is incident on the substrate having the homogeneous alignment. A polarization direction of the polarized light is orthogonal or parallel to an alignment direction of the substrate having the homogeneous alignment. A birefringence of the liquid crystal layer multiplied by the liquid crystal thickness and further divided by a wavelength of the polarized light is greater than 10. The polarization direction of the polarized light is rotated corresponding to an intensity of the switching electric field in the liquid crystal layer.
    Type: Application
    Filed: September 27, 2021
    Publication date: February 2, 2023
    Inventors: Tsung-Hsien Lin, Heng-Yi Tseng, Cheng-Chang Li, Duan-Yi Guo, Li-Min Chang, Kuan-Wu Lin
  • Patent number: 11568446
    Abstract: The media preview system receives media content from one or more client devices, generates a preview of the media content, associates a coded image with the preview within a database associated with the media preview system, detects scans of the coded image from client devices, and causes display of the preview at the client devices in response to detecting the scan.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: January 31, 2023
    Assignee: Snap Inc.
    Inventors: Omer Cansizoglu, Chang Li, Brennan Erbeznik, Giovanni Gardelli, Ryan Hornberger, Jingou Xu
  • Publication number: 20230017029
    Abstract: The media preview system receives media content from one or more client devices, generates a preview of the media content, associates a coded image with the preview within a database associated with the media preview system, detects scans of the coded image from client devices, and causes display of the preview at the client devices in response to detecting the scan.
    Type: Application
    Filed: September 29, 2022
    Publication date: January 19, 2023
    Inventors: Omer Cansizoglu, Chang Li, Brennan Erbeznik, Giovanni Gardelli, Ryan Hornberger, Jingou Xu
  • Publication number: 20230012008
    Abstract: Methods and systems are described for processing calls. An example method may comprise receiving a message for establishing a call. Identification information in the message may be compared to screening data. If a match is found, the message may be forwarded to a screening server. The screening server may establish a call based on the session and provide information indicative of a level of trust associated with the call.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 12, 2023
    Inventors: Chia-Chang Li, Vengatarajulu Rajasekar
  • Publication number: 20230005874
    Abstract: In a described example, an apparatus includes: a package substrate having a die mount portion and lead portions spaced from the die mount portion; a semiconductor die over the die mount portion having bond pads on an active surface facing away from the package substrate; non-gold bond wires forming electrical connections between at least one of the bond pads and one of the lead portions of the package substrate; a bond stitch on bump connection formed between one of the non-gold bond wires and a bond pad of the semiconductor die, comprising a stitch bond formed on a flex stud bump; and dielectric material covering a portion of the package substrate, the semiconductor die, the non-gold bond wires, the stitch bond and the flex stud bump, forming a packaged semiconductor device.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 5, 2023
    Inventors: Bo-Hsun Pan, Chien-Chang Li, Hung-Yu Chou, Shawn Martin O'Connor, Byron Lovell Williams, Jeffrey Alan West, Zi-Xian Zhan, Sheng-Wen Huang
  • Publication number: 20220380776
    Abstract: Systems and methods to selectively protect therapeutic cells by reducing CD33 expression in the therapeutic cells using base editors and targeting non-therapeutic cells with an anti-CD33 therapy are described. The selective protection results in the enrichment of the therapeutic cells while simultaneously targeting any diseased, malignant and/or non-therapeutic CD33 expressing cells within a subject.
    Type: Application
    Filed: October 22, 2020
    Publication date: December 1, 2022
    Applicants: Fred Hutchinson Cancer Center, University of Washington
    Inventors: Olivier Humbert, Hans-Peter Kiem, Roland B. Walter, Andre Lieber, Chang Li
  • Publication number: 20220384523
    Abstract: A MRAM circuit structure is provided in the present invention, with the unit cell composed of three transistors in series and four MTJs, wherein the junction between first transistor and third transistor is first node, the junction between second transistor and third transistor is second node, and the other ends of first transistor and third transistor are connected to a common source line. First MTJ is connected to second MTJ in series to form a first MTJ pair that connecting to the first node, and third MTJ is connected to fourth MTJ in series to form a second MTJ pair that connecting to the second node.
    Type: Application
    Filed: July 7, 2021
    Publication date: December 1, 2022
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Yi-Ting Wu, Cheng-Tung Huang, Jen-Yu Wang, Yung-Ching Hsieh, Po-Chun Yang, Jian-Jhong Chen, Bo-Chang Li
  • Patent number: 11515409
    Abstract: The present invention relates to a semiconductor device with an asymmetric gate structure. The device comprises a substrate; a channel layer, positioned above the substrate; a barrier layer, positioned above the channel layer, the barrier layer and the channel layer being configured to form two-dimensional electron gas (2DEG), and the 2DEG being formed in the channel layer along an interface between the channel layer and the barrier layer; a source contact and a drain contact, positioned above the barrier layer; a doped group III-V layer, positioned above the barrier layer and between the drain contact and the source contact; and a gate electrode, positioned above the doped group III-V layer and configured to form a Schottky junction with the doped group III-V layer, wherein the doped group III-V layer and/or gate electrode has a non-central symmetrical geometry so as to achieve the effect of improving gate leakage current characteristics.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: November 29, 2022
    Assignee: INNOSCIENCE (ZHUHAI) TECHNOLOGY CO., LTD.
    Inventors: Hang Liao, Qiyue Zhao, Chang An Li, Chao Wang, Chunhua Zhou, King Yuen Wong
  • Publication number: 20220373827
    Abstract: A projection type transparent display includes a polarization modulator and a reflective layer. The polarization modulator is stacked in sequence by a linear polarizer, a liquid crystal layer and a phase retarder. The reflective layer is stacked on the phase retarder. A projection light is incident on the linear polarizer to form a linearly polarized light. The liquid crystal layer changes a polarization direction of the linearly polarized light. Two kinds of linearly polarized projection lights with polarization directions orthogonal to each other are respectively formed and pass through the phase retarder to respectively form two kinds of circularly polarized projection lights with opposite rotation directions. A background light is incident on the reflective layer.
    Type: Application
    Filed: June 17, 2021
    Publication date: November 24, 2022
    Inventors: Tsung-Hsien LIN, Heng-Yi TSENG, Cheng-Chang LI, Li-Min CHANG, Kuan-Wu LIN
  • Publication number: 20220375748
    Abstract: A method of forming a structure having a coating layer includes the following steps: providing a substrate; coating a fluid on the surface of the substrate, where the fluid includes a carrier and a plurality of silicon-containing nanoparticles; and performing a heating process to remove the carrier and convert the silicon-containing nanoparticles into a silicon-containing layer, a silicide layer, or a stack layer including the silicide layer and the silicon-containing layer.
    Type: Application
    Filed: May 24, 2021
    Publication date: November 24, 2022
    Inventors: CHUAN-PU LIU, YIN-WEI CHENG, SHIH-AN WANG, BO-LIANG PENG, CHUN-HUNG CHEN, JUN-HAN HUANG, YI-CHANG LI
  • Patent number: 11508048
    Abstract: The present disclosure discloses a method and a system for generating a composite PET-CT image based on a non-attenuation-corrected PET image. The method includes: constructing a first generative adversarial network and a second generative adversarial network; obtaining a mapping relationship between a non-attenuation-corrected PET image and an attenuation-corrected PET image by training the first generative adversarial network; obtaining a mapping relationship between the attenuation-corrected PET image and a CT image by training the second generative adversarial network; and generating the composite PET-CT image by utilizing the obtained mapping relationships. According to the present disclosure, a high-quality PET-CT image can be directly composited from a non-attenuation-corrected PET image, and medical costs can be reduced for patients, and radiation doses applied to the patients in examination processes can be minimized.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: November 22, 2022
    Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
    Inventors: Zhan Li Hu, Dong Liang, Yong Chang Li, Hai Rong Zheng, Yong Feng Yang, Xin Liu
  • Patent number: 11508829
    Abstract: Some embodiments of the disclosure provide a semiconductor device. The semiconductor device comprises: a substrate; a first nitride semiconductor layer on the substrate; a second nitride semiconductor layer on the first nitride semiconductor layer and having a band gap larger than a band gap of the first nitride semiconductor layer; an intermediate layer disposed on the second nitride semiconductor layer; and a conductive structure disposed on the intermediate layer, wherein a first even interface is formed between the intermediate layer and the second nitride semiconductor layer.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: November 22, 2022
    Assignee: INNOSCIENCE (ZHUHAI) TECHNOLOGY CO., LTD.
    Inventors: Chang An Li, Ming-Hong Chang, Jun Tang, Zi Ming Du
  • Publication number: 20220360685
    Abstract: An image outputting device includes a scanning module, a storage module, an identification module, a calibration module and a printing module. The scanning module generates an image by scanning an object. The storage module stores the image. The identification module identifies a layout orientation and a text orientation of the image. The calibration module calibrates the layout orientation and the text orientation of the image according to a relation of an identification result of the identification module and a layout orientation of the printing medium. When the printing module prints the calibrated image on a printing surface of the printing medium and outputs the printing medium with the printing surface facing downwardly, the layout orientation of the printed image matches with the layout orientation of the printing medium, and the text orientation of the printed image is opposite to an medium outputting direction or arranged from proximal to distal.
    Type: Application
    Filed: April 29, 2022
    Publication date: November 10, 2022
    Applicant: AVISION INC.
    Inventor: Chen-Chang Li
  • Patent number: 11493787
    Abstract: A projection type transparent display includes a polarization modulator and a reflective layer. The polarization modulator is stacked in sequence by a linear polarizer, a liquid crystal layer and a phase retarder. The reflective layer is stacked on the phase retarder. A projection light is incident on the linear polarizer to form a linearly polarized light. The liquid crystal layer changes a polarization direction of the linearly polarized light. Two kinds of linearly polarized projection lights with polarization directions orthogonal to each other are respectively formed and pass through the phase retarder to respectively form two kinds of circularly polarized projection lights with opposite rotation directions. A background light is incident on the reflective layer.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: November 8, 2022
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Tsung-Hsien Lin, Heng-Yi Tseng, Cheng-Chang Li, Li-Min Chang, Kuan-Wu Lin
  • Publication number: 20220352337
    Abstract: The present disclosure relates to a semiconductor device and a fabrication method thereof. The semiconductor device includes a substrate, a first nitride semiconductor layer disposed on the substrate, a second nitride semiconductor layer disposed on the first nitride semiconductor layer, a passivation layer disposed on the second nitride semiconductor layer, a first adhesive layer disposed on the passivation layer. The semiconductor device further includes a conductive contact disposed on the first adhesive layer and extending through the first adhesive layer into the passivation layer, the conductive contact has a first overhang on the passivation layer and in direct contact with the first adhesive layer, and the conductive contact comprising a first element. A concentration of the first element is less than approximate 3% around to a contact between the first overhang and the passivation layer.
    Type: Application
    Filed: November 27, 2020
    Publication date: November 3, 2022
    Inventors: Chang An LI, Ming-Hong CHANG
  • Publication number: 20220352111
    Abstract: An electronic device includes a bond wire with a first end bonded by a ball bond to a planar side of a first conductive plate, and a second end bonded by a stitch bond to a conductive stud bump at an angle greater than or equal to 60 degrees. A wirebonding method includes bonding the first end of the conductive bond wire to the first conductive plate includes forming a ball bond to join the first end of the conductive bond wire to a planar side of the first conductive plate by a ball bond, and bonding the second end of the conductive bond wire to the conductive stud bump includes forming a stitch bond to join the second end of the conductive bond wire to the conductive stud bump.
    Type: Application
    Filed: April 28, 2021
    Publication date: November 3, 2022
    Applicant: Texas Instruments Incorporated
    Inventors: Chien-Chang Li, Hung-Yu Chou, Sheng-Wen Huang, Zi-Xian Zhan, Byron Lovell Williams
  • Patent number: 11480450
    Abstract: An EHz ultrafast modulated pulse scanning laser and a distributed fiber sensing system. A plurality of phase-shift gratings are engraved on a doped fiber, the phase-shift gratings having different central window wavelengths and a wavelength interval between the adjacent central window wavelengths being a preset fixed value. When a pump light emitted by a pump laser source is coupled by a wavelength division multiplexer and enters the doped fiber, a single-mode narrow-linewidth laser light having multiple wavelengths with a wavelength interval being a preset fixed value can be generated, by using the phase-shift gratings graved on the doped fiber. The ultrafast modulation is completed by using a time-domain control method based on an EOM. An internally frequency converted pulse light formed by splicing pulse lights whose frequencies linearly increase is obtained, thus forming the EHz ultrafast modulation of a distributed feedback fiber laser.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: October 25, 2022
    Assignee: LASER INSTITUTE OF SHANDONG ACADEMY OF SCIENCE
    Inventors: Ying Shang, Chen Wang, Chang Wang, Jiasheng Ni, Wenan Zhao, Chang Li, Bing Cao, Sheng Huang, Yingying Wang, Yanbin Wu