Patents by Inventor Yu-Chi Lai

Yu-Chi Lai 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: 10824347
    Abstract: A storage device and a data storing method thereof are provided. The storage device includes a data storage medium and the control unit. The data storage medium includes a data storage area with a plurality of first type of data blocks. When a data reading operation is executed on a current data block of the data storage medium, the control unit determines whether a read count of the current data block is greater than a first threshold, determines whether the current data block is one of the first type of data blocks and generate a determination result according to the result, the control unit selects a plurality of first type of data blocks and switches the selected data blocks to a fast mode. Finally, the control unit moves data stored in the current data block to the selected data blocks under fast mode.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 3, 2020
    Assignee: SILICON MOTION, INC.
    Inventors: Ching-Ke Chen, Yu-Chi Lai
  • Publication number: 20190384510
    Abstract: A storage device and a data storing method thereof are provided. The storage device includes a data storage medium and the control unit. The data storage medium includes a data storage area with a plurality of first type of data blocks. When a data reading operation is executed on a current data block of the data storage medium, the control unit determines whether a read count of the current data block is greater than a first threshold, determines whether the current data block is one of the first type of data blocks and generate a determination result according to the result, the control unit selects a plurality of first type of data blocks and switches the selected data blocks to a fast mode. Finally, the control unit moves data stored in the current data block to the selected data blocks under fast mode.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Ching-Ke Chen, Yu-Chi Lai
  • Patent number: 10437493
    Abstract: A storage device and a data storing method thereof are provided. The storage device includes a data storage medium and the control unit. The data storage medium includes a data storage area with a plurality of first type of data blocks. When a data reading operation is executed on a current data block of the data storage medium, the control unit determines whether a read count of the current data block is greater than a first threshold, determines whether the current data block is one of the first type of data blocks and generate a determination result according to the result, the control unit selects a plurality of first type of data blocks and switches the selected data blocks to a fast mode. Finally, the control unit moves data stored in the current data block to the selected data blocks under fast mode.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: October 8, 2019
    Assignee: Silicon Motion, Inc.
    Inventors: Ching-Ke Chen, Yu-Chi Lai
  • Publication number: 20180314446
    Abstract: A storage device and a data storing method thereof are provided. The storage device includes a data storage medium and the control unit. The data storage medium includes a data storage area with a plurality of first type of data blocks. When a data reading operation is executed on a current data block of the data storage medium, the control unit determines whether a read count of the current data block is greater than a first threshold, determines whether the current data block is one of the first type of data blocks and generate a determination result according to the result, the control unit selects a plurality of first type of data blocks and switches the selected data blocks to a fast mode. Finally, the control unit moves data stored in the current data block to the selected data blocks under fast mode.
    Type: Application
    Filed: July 6, 2018
    Publication date: November 1, 2018
    Inventors: Ching-Ke Chen, Yu-Chi Lai
  • Patent number: 10042567
    Abstract: A storage device and a data storing method thereof are provided. The storage device includes a data storage medium and the control unit. The data storage medium includes a data storage area with a plurality of first type of data blocks. When a data reading operation is executed on a current data block of the data storage medium, the control unit determines whether a read count of the current data block is greater than a first threshold, determines whether the current data block is one of the first type of data blocks and generate a determination result according to the result, the control unit selects a plurality of first type of data blocks and switches the selected data blocks to a fast mode. Finally, the control unit moves data stored in the current data block to the selected data blocks under fast mode.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 7, 2018
    Assignee: Silicon Motion, Inc.
    Inventors: Ching-Ke Chen, Yu-Chi Lai
  • Publication number: 20170308311
    Abstract: A storage device and a data storing method thereof are provided. The storage device includes a data storage medium and the control unit. The data storage medium includes a data storage area with a plurality of first type of data blocks. When a data reading operation is executed on a current data block of the data storage medium, the control unit determines whether a read count of the current data block is greater than a first threshold, determines whether the current data block is one of the first type of data blocks and generate a determination result according to the result, the control unit selects a plurality of first type of data blocks and switches the selected data blocks to a fast mode. Finally, the control unit moves data stored in the current data block to the selected data blocks under fast mode.
    Type: Application
    Filed: September 2, 2016
    Publication date: October 26, 2017
    Inventors: Ching-Ke Chen, Yu-Chi Lai
  • Publication number: 20150188414
    Abstract: A single-phase power factor corrector with step-up and step-down functions provides a step-up circuit and a step-down circuit which are connected in parallel to each other and thereby stabilizes an output voltage of the power factor corrector.
    Type: Application
    Filed: August 20, 2014
    Publication date: July 2, 2015
    Inventors: Yu-Chi LAI, Tsung-Liang HUNG
  • Publication number: 20150160269
    Abstract: A circuit structure for measuring an input voltage includes an inductance element, an extra wire winding and a processing element. The extra wire winding additionally wraps around the inductance element. The processing element is coupled to the extra wire winding. The inductance element receives the input voltage and works. The extra wire winding induces the input voltage to obtain an induction signal. The extra wire winding sends the induction signal to the processing element. The processing element is configured to calculate a voltage value of the input voltage according to the induction signal.
    Type: Application
    Filed: August 18, 2014
    Publication date: June 11, 2015
    Inventors: Yu-Chi LAI, Tsung-Liang HUNG, Ya-Lun OUYANG
  • Patent number: 7675240
    Abstract: A light emitting diode (LED) circuit having even current has multiple LED strings, a current equalizing integrated circuit (IC) and a voltage compensation module. The LED strings are connected to an external power source, and each LED string has a power terminal and a driving terminal. The current equalizing IC has multiple driving pins connected respectively to the driving terminals of the LED strings. The voltage compensation module is connected between the LED strings and the external power source and has a threshold voltage value and multiple input terminals. The input terminals are connected respectively to the driving pins of the current equalizing IC to allow the voltage compensation module rise and send the voltage obtained from the external power source to the LED strings when the voltage compensation module determines any voltage on the driving pins of the current equalizing IC is lower than the threshold voltage value.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: March 9, 2010
    Assignee: Asian Power Devices Inc.
    Inventors: Cheng-Chang Yang, Guang-Ming Lei, Yu-Chi Lai
  • Patent number: 7602151
    Abstract: A charger with output voltage compensation includes an AC/DC circuit, an output interface, a charge controller, and a compensator. The AC/DC circuit converts an AC source into a DC source. The voltage of the DC source is elevated by a transformer and used to charge a battery via the output interface. The charge controller can further increase the voltage of the output interface in order to accelerate battery charging. The compensator compensates the voltage wasted by the circuit. Therefore, the invention can overcome energy waste caused by the internal resistance in the circuit, achieving satisfactory charging effects.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: October 13, 2009
    Assignee: Asian Power Devices Inc.
    Inventors: Yu-Chi Lai, Sheng-Fa Chi
  • Patent number: 7550951
    Abstract: A two-step charger includes an AC/DC power supply, a transformer, a compensator, a controller, a comparator and an isolating controller. The comparator detects whether a battery is connected to the transformer. If so, a command voltage of the charger is set at a high level. Since the battery voltage is lower than the command voltage, the controller orders the compensator to send out a compensating current. The current entering the primary side of the transformer is increased to promote the output current from the secondary side of the transformer. Once the comparator detects that the battery reaches as high as the charger, the command voltage is adjusted to a low level. The controller orders the compensator to stop outputting the compensating current. Therefore, a larger current can speed up battery charging. Once the battery is fully charged, the charging voltage is lowered to avoid high temperature.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: June 23, 2009
    Assignee: Asian Power Devices Inc.
    Inventors: Yu-Chi Lai, Ji-Shun Liao
  • Publication number: 20090153066
    Abstract: A light emitting diode (LED) circuit having even current has multiple LED strings, a current equalizing integrated circuit (IC) and a voltage compensation module. The LED strings are connected to an external power source, and each LED string has a power terminal and a driving terminal. The current equalizing IC has multiple driving pins connected respectively to the driving terminals of the LED strings. The voltage compensation module is connected between the LED strings and the external power source and has a threshold voltage value and multiple input terminals. The input terminals are connected respectively to the driving pins of the current equalizing IC to allow the voltage compensation module rise and send the voltage obtained from the external power source to the LED strings when the voltage compensation module determines any voltage on the driving pins of the current equalizing IC is lower than the threshold voltage value.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Inventors: Cheng-Chang Yang, Guang-Ming Lei, Yu-Chi Lai
  • Publication number: 20080136373
    Abstract: A two-step charger includes an AC/DC power supply, a transformer, a compensator, a controller, a comparator and an isolating controller. The comparator detects whether a battery is connected to the transformer. If so, a command voltage of the charger is set at a high level. Since the battery voltage is lower than the command voltage, the controller orders the compensator to send out a compensating current. The current entering the primary side of the transformer is increased to promote the output current from the secondary side of the transformer. Once the comparator detects that the battery reaches as high as the charger, the command voltage is adjusted to a low level. The controller orders the compensator to stop outputting the compensating current. Therefore, a larger current can speed up battery charging. Once the battery is fully charged, the charging voltage is lowered to avoid high temperature.
    Type: Application
    Filed: October 3, 2006
    Publication date: June 12, 2008
    Inventors: Yu-Chi Lai, Ji-Shun Liao
  • Publication number: 20080106233
    Abstract: A charger with output voltage compensation includes an AC/DC circuit, an output interface, a charge controller, and a compensator. The AC/DC circuit converts an AC source into a DC source. The voltage of the DC source is elevated by a transformer and used to charge a battery via the output interface. The charge controller can further increase the voltage of the output interface in order to accelerate battery charging. The compensator compensates the voltage wasted by the circuit. Therefore, the invention can overcome energy waste caused by the internal resistance in the circuit, achieving satisfactory charging effects.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: Yu-Chi Lai, Sheng-Fa Chi
  • Patent number: 6312706
    Abstract: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: November 6, 2001
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chi Lai, Louis J. Baccei