Patents by Inventor Chang-Wei SHEN

Chang-Wei SHEN 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: 20220253121
    Abstract: The invention introduces a non-transitory computer-readable storage medium for adjusting operating frequencies when executed by a processing unit of a device, containing program code to: collect an interface-activity parameter comprising information about data transmissions on a host access interface and/or a flash access interface; select one from multiple frequencies according to the interface-activity parameter; and drive a clock generator to output a clock signal at the selected frequency, thereby enabling the host access interface and/or the flash access interface to operate at an operating frequency.
    Type: Application
    Filed: April 26, 2022
    Publication date: August 11, 2022
    Applicant: Silicon Motion, Inc.
    Inventors: Chang-Wei SHEN, Te-Kai WANG, Pin-Hua CHEN
  • Patent number: 11353946
    Abstract: The invention introduces a non-transitory computer program product for adjusting operating frequencies when executed by a processing unit of a device, containing program code to: collect an interface-activity parameter comprising information about data transmissions on a host access interface and/or a flash access interface; select one from multiple frequencies according to the interface-activity parameter; and drive a clock generator to output a clock signal at the selected frequency, thereby enabling the host access interface and/or the flash access interface to operate at an operating frequency.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: June 7, 2022
    Assignee: SILICON MOTION, INC.
    Inventors: Chang-Wei Shen, Te-Kai Wang, Pin-Hua Chen
  • Publication number: 20210223846
    Abstract: The invention introduces a non-transitory computer program product for adjusting operating frequencies when executed by a processing unit of a device, containing program code to: collect an interface-activity parameter comprising information about data transmissions on a host access interface and/or a flash access interface; select one from multiple frequencies according to the interface-activity parameter; and drive a clock generator to output a clock signal at the selected frequency, thereby enabling the host access interface and/or the flash access interface to operate at an operating frequency.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Applicant: Silicon Motion, Inc.
    Inventors: Chang-Wei SHEN, Te-Kai WANG, Pin-Hua CHEN
  • Patent number: 11003235
    Abstract: The invention introduces a non-transitory computer program product for adjusting operating frequencies when executed by a processing unit of a device, containing program code to: collect an interface-activity parameter comprising information about data transmissions on a host access interface and/or a flash access interface; select one from multiple frequencies according to the interface-activity parameter; and drive a clock generator to output a clock signal at the selected frequency, thereby enabling the host access interface and/or the flash access interface to operate at an operating frequency.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 11, 2021
    Assignee: SILICON MOTION, INC.
    Inventors: Chang-Wei Shen, Te-Kai Wang, Pin-Hua Chen
  • Patent number: 10990292
    Abstract: The present invention provides a flash memory controller, wherein the flash memory controller is arranged to access a flash memory module, the flash memory module includes a plurality of flash memory chips, the flash memory controller includes a buffer memory and a microcontroller, and the buffer memory is arranged to store an in-system programming (ISP) code. When the flash memory controller enters a power saving mode, the microcontroller disables a portion of the buffer memory to make at least one portion of the ISP code disappear; and when the flash memory controller enters a normal mode from the power saving mode, the microcontroller reads said at least one portion of the ISP code from N flash memory chips within the plurality of flash memory chips, wherein N is a positive integer greater than one.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: April 27, 2021
    Assignee: Silicon Motion, Inc.
    Inventors: Guan-Yao Huang, Yu-Chih Lin, Chang-Wei Shen
  • Publication number: 20200110543
    Abstract: The present invention provides a flash memory controller, wherein the flash memory controller is arranged to access a flash memory module, the flash memory module includes a plurality of flash memory chips, the flash memory controller includes a buffer memory and a microcontroller, and the buffer memory is arranged to store an in-system programming (ISP) code. When the flash memory controller enters a power saving mode, the microcontroller disables a portion of the buffer memory to make at least one portion of the ISP code disappear; and when the flash memory controller enters a normal mode from the power saving mode, the microcontroller reads said at least one portion of the ISP code from N flash memory chips within the plurality of flash memory chips, wherein N is a positive integer greater than one.
    Type: Application
    Filed: May 16, 2019
    Publication date: April 9, 2020
    Inventors: Guan-Yao Huang, Yu-Chih Lin, Chang-Wei Shen
  • Publication number: 20200064898
    Abstract: The invention introduces a non-transitory computer program product for adjusting operating frequencies when executed by a processing unit of a device, containing program code to: collect an interface-activity parameter comprising information about data transmissions on a host access interface and/or a flash access interface; select one from multiple frequencies according to the interface-activity parameter; and drive a clock generator to output a clock signal at the selected frequency, thereby enabling the host access interface and/or the flash access interface to operate at an operating frequency.
    Type: Application
    Filed: January 31, 2019
    Publication date: February 27, 2020
    Applicant: Silicon Motion, Inc.
    Inventors: Chang-Wei SHEN, Te-Kai WANG, Pin-Hua CHEN
  • Patent number: 10564892
    Abstract: A storage device including a volatile memory, a non-volatile memory and a controller is provided. The controller sends a plurality of commands to the non-volatile memory. When the controller receives a reset signal, the controller determines whether a specific operation has been completed. When the controller has not yet finished the specific operation, the controller continuously provides the commands to the non-volatile memory. When the controller has finished the specific operation, the controller performs a reset operation according to the reset signal.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: February 18, 2020
    Assignee: SILICON MOTION, INC.
    Inventor: Chang-Wei Shen
  • Publication number: 20190073134
    Abstract: The invention introduces a method for resetting a flash memory device, performed by a controller of a host, including at least the following steps: driving a memory controller to perform fewer than a maximum number of normal resets after receiving a hardware reset command from a processor; and driving the memory controller to perform a super reset when the normal resets are unsuccessful.
    Type: Application
    Filed: March 19, 2018
    Publication date: March 7, 2019
    Inventors: Chang-Wei SHEN, Yi-Da CHEN
  • Publication number: 20180314464
    Abstract: A storage device including a volatile memory, a non-volatile memory and a controller is provided. The controller sends a plurality of commands to the non-volatile memory. When the controller receives a reset signal, the controller determines whether a specific operation has been completed. When the controller has not yet finished the specific operation, the controller continuously provides the commands to the non-volatile memory. When the controller has finished the specific operation, the controller performs a reset operation according to the reset signal.
    Type: Application
    Filed: January 11, 2018
    Publication date: November 1, 2018
    Inventor: Chang-Wei SHEN