Patents by Inventor Chia-Chuan Tsai

Chia-Chuan Tsai 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: 11991572
    Abstract: Methods and apparatus are provided for UE-triggered handover and early preparation with coexistence of the network-triggered handover. In one novel aspect, the UE is configured early measurement report configuration, receives an early handover command from the serving base station with a handover candidate cell list, monitors handover triggering conditions for each candidate cell on the handover candidate cell list based on a UE-triggered handover configuration and performs the UE-triggered handover to a candidate cell when the corresponding triggering condition is met for the candidate cell. In one embodiment, the UE receives a network-triggered handover command to a target cell, suspends the UE-triggered handover configuration and performs the network-triggered handover to the target cell. The UE discards the UE-triggered handover configuration upon success of the network-triggered handover and resumes the UE-triggered handover configuration upon failure of the network-triggered handover.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: May 21, 2024
    Assignee: MEDIATEK INC.
    Inventors: Li-Chuan Tseng, Yuanyuan Zhang, Yung-Hsiang Liu, Chun-Fan Tsai, Chia-Chun Hsu
  • Patent number: 10598688
    Abstract: An oscillation control system includes an actuator, a sensor unit, and a control module. An actuator includes at least one piezoelectric material coupled with an electrode. The sensor unit is located on the actuator and is configured to detect an acceleration value of deformation of the actuator. A control module includes an operational unit and a gain unit. The operational unit generates an operational result according to the acceleration value and conditions of the actuator. The gain unit is coupled to the operational unit and the electrode and is configured to convert the operational result into a control signal which adjusts the actuator. An oscillation control method includes using a reciprocal state space system to proceed with closed-loop control of a state derivative feedback. The reciprocal state space system is represented by a plurality of equations.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: March 24, 2020
    Assignee: I-SHOU UNIVERSITY
    Inventors: Yuan-Wei Tseng, Rong-Ching Wu, Chia-Chuan Tsai
  • Publication number: 20200003799
    Abstract: An oscillation control system includes an actuator, a sensor unit, and a control module. An actuator includes at least one piezoelectric material coupled with an electrode. The sensor unit is located on the actuator and is configured to detect an acceleration value of deformation of the actuator. A control module includes an operational unit and a gain unit. The operational unit generates an operational result according to the acceleration value and conditions of the actuator. The gain unit is coupled to the operational unit and the electrode and is configured to convert the operational result into a control signal which adjusts the actuator. An oscillation control method includes using a reciprocal state space system to proceed with closed-loop control of a state derivative feedback. The reciprocal state space system is represented by a plurality of equations.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 2, 2020
    Inventors: Yuan-Wei Tseng, Rong-Ching Wu, Chia-Chuan Tsai