Patents by Inventor CHUNG-HSUAN LI

CHUNG-HSUAN 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).

  • Publication number: 20190179432
    Abstract: A pointer includes a casing, a first electromagnetic unit, a second electromagnetic unit, a first elastic member, and a pen point. The casing has an accommodation space and a port in communication with the accommodation space. The first electromagnetic unit includes a first magnet and a coil winding around the first magnet. The first magnet is fixedly disposed in the accommodation space. The second electromagnetic unit is movably disposed in the accommodation space along an axial direction, where the second electromagnetic unit includes a second magnet and a protection member wrapping the second magnet, and the second magnet is relatively away from or close to the first magnet. The elastic member is disposed in the casing and can provide an elastic force to the second electromagnetic unit along the axial direction. The pen point is movably disposed at the port and connected to the protection member.
    Type: Application
    Filed: May 16, 2018
    Publication date: June 13, 2019
    Applicant: SHENZHEN PU YING INNOVATION TECHNOLOGY CORP., LTD.
    Inventors: Chung-Wen HSU, Chung-Hsuan LI
  • Patent number: 9690398
    Abstract: A capacitive pointer is disclosed. The capacitive pointer comprises a conductive refill, a refill cover, an elastomer, a pressure sensor, a sensor board, a control circuit board, a pointer tip, a first frame and a second frame. The conductive refill penetrates and combines with the refill cover. The pressure sensor is mounted on the sensor board. The conductive refill applies a tip pressure against on the pressure sensor through the refill cover pushing the elastomer to sense the tip pressure of the capacitive pointer. The sensor board electrically connects the control circuit board to calculate a tip pressure value of the capacitive pointer. The pointer tip electrically connects the control circuit board. The first frame and the second frame are located between the conductive refill and the refill cover and combine to secure the control circuit board.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: June 27, 2017
    Assignee: Walltop International Corporation
    Inventor: Chung-Hsuan Li
  • Publication number: 20160274684
    Abstract: A capacitive pointer is disclosed. The capacitive pointer comprises a conductive refill, a refill cover, an elastomer, a pressure sensor, a sensor board, a control circuit board, a pointer tip, a first frame and a second frame. The conductive refill penetrates and combines with the refill cover. The pressure sensor is mounted on the sensor board. The conductive refill applies a tip pressure against on the pressure sensor through the refill cover pushing the elastomer to sense the tip pressure of the capacitive pointer. The sensor board electrically connects the control circuit board to calculate a tip pressure value of the capacitive pointer. The pointer tip electrically connects the control circuit board. The first frame and the second frame are located between the conductive refill and the refill cover and combine to secure the control circuit board.
    Type: Application
    Filed: July 28, 2015
    Publication date: September 22, 2016
    Inventor: CHUNG-HSUAN LI
  • Patent number: 9092107
    Abstract: An electromagnetic pen with electromagnetic and ink writing functions is disclosed. The electromagnetic pen includes at least one pen tube assembly, a core mechanism, a pen tip, a ferrite core, a core holder, an elastic conductor and a circuit board. The pen tip and the core are configured in the pen tube assembly and are controlled by the core mechanism.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: July 28, 2015
    Assignee: Wacom Co., Ltd.
    Inventors: Chia-Jui Yeh, Chung-Hsuan Li
  • Patent number: 9052756
    Abstract: An electromagnetic handwriting pen includes a casing unit, an ink writing unit and an electromagnetic writing unit. The ink writing unit is disposed inside the casing unit and includes an ink pen core having a pen nib. The electromagnetic writing unit is disposed inside the casing unit and includes a circuit substrate far away from the pen nib, an electricity conducting element adjacent to the circuit substrate, an elastic element insulatively disposed between the circuit substrate and the electricity conducting element, and a magnetic structure adjacent to the pen nib and electrically connected to the circuit substrate. The circuit substrate has at least two electrode portions adjacent to and facing the electricity conducting element. Whereby, when the electricity conducting element is moved to concurrently contact the at least two electrode portions, the at least two electrode portions are electrically connected with each other through the electricity conducting element.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: June 9, 2015
    Assignee: Wacom Co., Ltd.
    Inventors: Chia-Jui Yeh, Chung-Hsuan Li
  • Publication number: 20150116287
    Abstract: An electromagnetic handwriting pen includes a casing unit, an ink writing unit and an electromagnetic writing unit. The ink writing unit is disposed inside the casing unit and includes an ink pen core having a pen nib. The electromagnetic writing unit is disposed inside the casing unit and includes a circuit substrate far away from the pen nib, an electricity conducting element adjacent to the circuit substrate, an elastic element insulatively disposed between the circuit substrate and the electricity conducting element, and a magnetic structure adjacent to the pen nib and electrically connected to the circuit substrate. The circuit substrate has at least two electrode portions adjacent to and facing the electricity conducting element. Whereby, when the electricity conducting element is moved to concurrently contact the at least two electrode portions, the at least two electrode portions are electrically connected with each other through the electricity conducting element.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 30, 2015
    Applicant: WALTOP INTERNATIONAL CORPORATION
    Inventors: CHIA-JUI YEH, CHUNG-HSUAN LI
  • Publication number: 20140118311
    Abstract: An electromagnetic pen with electromagnetic and ink writing functions is disclosed. The electromagnetic pen includes at least one pen tube assembly, a core mechanism, a pen tip, a ferrite core, a core holder, an elastic conductor and a circuit board. The pen tip and the core are configured in the pen tube assembly and are controlled by the core mechanism.
    Type: Application
    Filed: December 20, 2012
    Publication date: May 1, 2014
    Applicant: WALTOP INTERNATIONAL CORPORATION
    Inventors: CHIA-JUI YEH, CHUNG-HSUAN LI