Patents by Inventor Ching-Shan Lu

Ching-Shan Lu 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: 11258381
    Abstract: A motor driving circuit for a single phase motor and a motor driving method for the same are provided. The motor driving circuit includes a motor driver, a Hall sensor, a Hall commutation detection circuit, a period recording circuit, a motor current detection circuit, a cut-off angle adjustment circuit, an angle calculation circuit and a control circuit. The motor current detection circuit detects a motor current value at a commutation point after the single phase motor operates normally. The cut-off angle adjustment circuit generates a cut-off angle adjustment signal indicating a cut-off adjustment angle according to the motor current value when the single phase motor passes the commutation point. The control circuit processes the commutation signal and the cut-off signal generated by the angle calculation circuit to generate a control signal group to control the motor driver to generate an output signal group to drive the motor.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: February 22, 2022
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Kun-Min Chen, Ching-Shan Lu
  • Patent number: 11088639
    Abstract: A motor driving device includes a first hysteresis comparator, a second hysteresis comparator, a logic circuit, a control unit, and an inverter circuit. The logic circuit receives a start signal or a start completion signal to output the first output signal as a commutation signal according to the start signal, or to output the second output signal as the commutation signal according to the start completion signal, clamps the second output signal by the first output signal, stops outputting the commutation signal after the potential state of the commutation signal is changed, and unclamps the second output signal with the first output signal and outputs the commutation signal in response to a difference voltage between the first input signal and the second input signal being greater than a positive value of the first hysteresis voltage or less than a negative value of the first hysteresis voltage.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: August 10, 2021
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Kun-Min Chen, Ching-Shan Lu, Shih-Hai Chien
  • Publication number: 20210075346
    Abstract: A motor driving device includes a first hysteresis comparator, a second hysteresis comparator, a logic circuit, a control unit, and an inverter circuit. The logic circuit receives a start signal or a start completion signal to output the first output signal as a commutation signal according to the start signal, or to output the second output signal as the commutation signal according to the start completion signal, clamps the second output signal by the first output signal, stops outputting the commutation signal after the potential state of the commutation signal is changed, and unclamps the second output signal with the first output signal and outputs the commutation signal in response to a difference voltage between the first input signal and the second input signal being greater than a positive value of the first hysteresis voltage or less than a negative value of the first hysteresis voltage.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 11, 2021
    Inventors: KUN-MIN CHEN, Ching-Shan Lu, Shih-Hai Chien
  • Patent number: 9774283
    Abstract: A motor driving circuit for driving a direct-current (DC) motor, includes a driving circuit for converting an input voltage into a first and a second output voltages, a Hall sensor for generating a first and a second time sequential control signals according to a working condition of the DC motor, a current sensing unit for comparing the motor current to a reference current to generate a comparison result, and a control unit coupled to the driving circuit, the current sensing unit and the Hall sensor for controlling a working status of the driving circuit according to the first and the second time sequential control signals and the comparison result.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: September 26, 2017
    Assignee: Anpec Electronics Corporation
    Inventors: Kun-Min Chen, Ching-Sheng Li, Ching-Shan Lu, Ming-Jung Tsai
  • Publication number: 20160087562
    Abstract: A motor driving circuit for driving a direct-current (DC) motor, includes a driving circuit for converting an input voltage into a first and a second output voltages, a Hall sensor for generating a first and a second time sequential control signals according to a working condition of the DC motor, a current sensing unit for comparing the motor current to a reference current to generate a comparison result, and a control unit coupled to the driving circuit, the current sensing unit and the Hall sensor for controlling a working status of the driving circuit according to the first and the second time sequential control signals and the comparison result.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 24, 2016
    Inventors: Kun-Min Chen, Ching-Sheng Li, Ching-Shan Lu, Ming-Jung Tsai
  • Publication number: 20140028232
    Abstract: A motor driving circuit for driving a direct-current (DC) motor, includes a driving circuit for converting an input voltage into a first and a second output voltages, a Hall sensor for generating a first and a second time sequential control signals according to a working condition of the DC motor, a current sensing unit for detecting a motor current through the DC motor and comparing the motor current to a reference current to generate a comparison result and determine a first transition voltage selector value accordingly, and a control unit coupled to the driving circuit, the current sensing unit and the Hall sensor for controlling a working status of the driving circuit according to the first and the second time sequential control signals and the first transition voltage selector value.
    Type: Application
    Filed: August 28, 2012
    Publication date: January 30, 2014
    Applicant: ANPEC ELECTRONICS CORPORATION
    Inventors: Kun-Min Chen, Ching-Sheng Li, Ching-Shan Lu, Ming-Jung Tsai
  • Patent number: 8624539
    Abstract: The present invention discloses a start-up circuit for a motor driving IC. The activation circuit includes a determination unit, for generating a determination result indicating an operating mode of the motor driving IC according to an external pulse width modulation signal, and an output unit, for outputting an activation signal according to the determination result and a pulse width modulation activation signal. A duty of the pulse width modulation activation signal is greater than a duty of the external pulse width modulation signal.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: January 7, 2014
    Assignee: Anpec Electronics Corporation
    Inventors: Ying-Chen Lin, Kun-Min Chen, Ching-Sheng Li, Chia-Tai Yang, Ching-Shan Lu
  • Patent number: 8519802
    Abstract: The present invention discloses a pulse width modulation driving IC. The pulse width modulation driving IC includes a first pin, for receiving a first signal, a second pin, for receiving a second signal, a comparing unit, for comparing the first signal with a reference voltage, to generate a comparison result indicating a operating mode of the pulse width modulation driving IC, and an output unit, for outputting a pulse width modulation output signal according to the first signal, the second signal and the comparison result.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 27, 2013
    Assignee: Anpec Electronics Corporation
    Inventors: Chia-Tai Yang, Yi-Cheng Liu, Ching-Sheng Li, Kun-Min Chen, Ching-Shan Lu
  • Publication number: 20120280642
    Abstract: The present invention discloses a start-up circuit for a motor driving IC. The activation circuit includes a determination unit, for generating a determination result indicating an operating mode of the motor driving IC according to an external pulse width modulation signal, and an output unit, for outputting an activation signal according to the determination result and a pulse width modulation activation signal. A duty of the pulse width modulation activation signal is greater than a duty of the external pulse width modulation signal.
    Type: Application
    Filed: August 8, 2011
    Publication date: November 8, 2012
    Inventors: Ying-Chen Lin, Kun-Min Chen, Ching-Sheng Li, Chia-Tai Yang, Ching-Shan Lu
  • Publication number: 20120274411
    Abstract: The present invention discloses a pulse width modulation driving IC. The pulse width modulation driving IC includes a first pin, for receiving a first signal, a second pin, for receiving a second signal, a comparing unit, for comparing the first signal with a reference voltage, to generate a comparison result indicating a operating mode of the pulse width modulation driving IC, and an output unit, for outputting a pulse width modulation output signal according to the first signal, the second signal and the comparison result.
    Type: Application
    Filed: June 29, 2011
    Publication date: November 1, 2012
    Inventors: Chia-Tai Yang, Yi-Cheng Liu, Ching-Sheng Li, Kun-Min Chen, Ching-Shan Lu
  • Patent number: 8093678
    Abstract: A semiconductor device. The device includes an active region isolated by an isolation structure on a substrate, and a dielectric layer overlying the active region and the isolation structure. The dielectric layer comprises a lower part overlying the active region beyond the boundary of the active region and the isolation structure, and a protruding part overlying the boundary of the active region and the isolation structure.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: January 10, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ching-Shan Lu, Feng-Liang Lai, Shean-Ren Horng
  • Patent number: 8080955
    Abstract: A driving method for a motor includes sensing variation of magnetic pole of a rotator of the motor, to generate a magnetic pole sensing signal, determining dead zone of the motor according to the magnetic pole sensing signal, to generate a determination result, and adjusting voltage outputted to a coil of the rotator according to the determination result.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: December 20, 2011
    Assignee: Anpec Electronics Corporation
    Inventors: Kun-Min Chen, Ming-Jung Tsai, Sung-Ming Lai, Ching-Sheng Li, Ching-Shan Lu
  • Patent number: 8063601
    Abstract: A motor driving circuit for adjusting speed of the motor by changing output voltage is disclosed. One end of the motor is coupled to a variable voltage source. The motor driving circuit includes a motor-driving unit, a control unit and a determining unit. The motor-driving unit includes a first end coupled to another end of the motor, a second end coupled to a ground and a third end, and is utilized for driving the motor. The control unit is utilized for controlling the voltage between the first end and the third end of the motor-driving unit. The determining unit is coupled between the variable voltage source and the control unit, and is utilized for controlling the control unit to adjust the voltage between the first end and the third end of the motor-driving unit according to magnitude of the voltage of the variable voltage source.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: November 22, 2011
    Assignee: Anpec Electronics Corporation
    Inventors: Ke-Min Chen, Ching-Sheng Li, Kun-Min Chen, Shen-Min Lo, Ching-Shan Lu
  • Publication number: 20100253259
    Abstract: A driving method for a motor includes sensing variation of magnetic pole of a rotator of the motor, to generate a magnetic pole sensing signal, determining dead zone of the motor according to the magnetic pole sensing signal, to generate a determination result, and adjusting voltage outputted to a coil of the rotator according to the determination result.
    Type: Application
    Filed: June 1, 2009
    Publication date: October 7, 2010
    Inventors: Kun-Min Chen, Ming-Jung Tsai, Sung-Ming Lai, Ching-Sheng Li, Ching-Shan Lu
  • Publication number: 20100052591
    Abstract: A motor driving circuit for adjusting speed of the motor by changing output voltage is disclosed. One end of the motor is coupled to a variable voltage source. The motor driving circuit includes a motor-driving unit, a control unit and a determining unit. The motor-driving unit includes a first end coupled to another end of the motor, a second end coupled to a ground and a third end, and is utilized for driving the motor. The control unit is utilized for controlling the voltage between the first end and the third end of the motor-driving unit. The determining unit is coupled between the variable voltage source and the control unit, and is utilized for controlling the control unit to adjust the voltage between the first end and the third end of the motor-driving unit according to magnitude of the voltage of the variable voltage source.
    Type: Application
    Filed: October 20, 2008
    Publication date: March 4, 2010
    Inventors: Ke-Min Chen, Ching-Sheng Li, Kun-Min Chen, Shen-Min Lo, Ching-Shan Lu
  • Publication number: 20080246111
    Abstract: A semiconductor device. The device includes an active region isolated by an isolation structure on a substrate, and a dielectric layer overlying the active region and the isolation structure. The dielectric layer comprises a lower part overlying the active region beyond the boundary of the active region and the isolation structure, and a protruding part overlying the boundary of the active region and the isolation structure.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 9, 2008
    Inventors: Ching-Shan Lu, Feng-Liang Lai, Shean-Ren Horng
  • Publication number: 20070202996
    Abstract: A treadmill including: a base seat, a first bracket and a second bracket being respectively pivotally mounted on each of two lateral sides of a front section of the base seat, a damper being disposed between a middle section of each second bracket and a rear end of the base seat; and two tread boards, top ends of the first brackets being respectively pivotally connected under front ends of the tread boards, top ends of the second brackets being respectively pivotally connected under middle sections of the tread boards. When treading the tread boards of the treadmill, a forward travel is achieved. Therefore, a user can use the treadmill just like the user naturally steps forward.
    Type: Application
    Filed: February 28, 2006
    Publication date: August 30, 2007
    Inventors: Ching-shan Lu, Chun-Wei Lin
  • Patent number: 7089677
    Abstract: A novel method for determining whether substrates are correctly positioned on a substrate support in a semiconductor substrate processing or measuring tool for optimum processing or measuring of the substrates. The method includes providing a control substrate; providing alignment marks on the substrate; determining a homing position for the alignment marks on the control substrate wherein the position of the control substrate corresponds to a homing position for optimum processing or measuring of actual substrates; periodically testing the position of the control substrate on the substrate support as facilitated by the substrate transfer and/or substrate positioning equipment of the tool; and determining whether the position of the alignment marks on the control substrate, with respect to the substrate support, stray outside an accepted deviation range.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: August 15, 2006
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ching-Shan Lu, Chien-Yao Kao, Fu-Su Lee
  • Publication number: 20050246915
    Abstract: A novel method for determining whether substrates are correctly positioned on a substrate support in a semiconductor substrate processing or measuring tool for optimum processing or measuring of the substrates. The method includes providing a control substrate; providing alignment marks on the substrate; determining a homing position for the alignment marks on the control substrate wherein the position of the control substrate corresponds to a homing position for optimum processing or measuring of actual substrates; periodically testing the position of the control substrate on the substrate support as facilitated by the substrate transfer and/or substrate positioning equipment of the tool; and determining whether the position of the alignment marks on the control substrate, with respect to the substrate support, stray outside an accepted deviation range.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 10, 2005
    Inventors: Ching-Shan Lu, Chien-Yao Kao, Fu-Su Lee
  • Patent number: 6954715
    Abstract: A system and method for equipment malfunction detection and diagnosis. The system includes equipment and a detection/diagnosis unit. The equipment transfers status information thereof to the detection/diagnosis unit at preset intervals. The detection/diagnosis unit receives and stores the status information of the equipment, and checks whether the status information conforms to a process control standard. If not, it is determined that the equipment has a malfunction, and the detection/diagnosis unit generates a notification or warning message, stops the operation of the equipment, and retrieves a recovery measure for the malfunction from a diagnostic database.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: October 11, 2005
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Ching-Shan Lu