Patents by Inventor Chin-Fa Chiu
Chin-Fa Chiu 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).
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Patent number: 9344017Abstract: A driving circuit drives a motor containing a first coil and a second coil. The driving circuit includes a switching unit, an operation unit and a control unit. The switching unit receives a switching signal from the control unit for driving the motor. The control unit detects the rotation speed of the motor. When the rotation speed of the motor is greater than a predetermined rotation speed, the control unit outputs a first operation signal to the operation unit to couple the first terminals of the first and second coils and couple the second terminals of the first and second coils. When the rotation speed of the motor is less than or equal to the predetermined rotational speed, the control unit outputs a second operation signal to the operation unit to couple the second terminal of the first coil to the first terminal of the second coil.Type: GrantFiled: September 30, 2014Date of Patent: May 17, 2016Assignee: DELTA ELECTRONICS, INC.Inventors: Chung-Hung Tang, Chien-Sheng Lin, Chin-Fa Chiu, Chun-Lung Chiu
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Publication number: 20150244295Abstract: A driving circuit drives a motor containing a first coil and a second coil. The driving circuit includes a switching unit, an operation unit and a control unit. The switching unit receives a switching signal from the control unit for driving the motor. The control unit detects the rotation speed of the motor. When the rotation speed of the motor is greater than a predetermined rotation speed, the control unit outputs a first operation signal to the operation unit to couple the first terminals of the first and second coils and couple the second terminals of the first and second coils. When the rotation speed of the motor is less than or equal to the predetermined rotational speed, the control unit outputs a second operation signal to the operation unit to couple the second terminal of the first coil to the first terminal of the second coil.Type: ApplicationFiled: September 30, 2014Publication date: August 27, 2015Inventors: Chung-Hung TANG, Chien-Sheng LIN, Chin-Fa CHIU, Chun-Lung CHIU
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Patent number: 8552677Abstract: A fan rotary speed controlling device includes a first signal generating circuit, a second signal generating circuit, a pulse width modulation (PWM) circuit and a switching circuit. The first signal generating circuit receives a real frequency signal and a target frequency signal, and generates a first signal according to the real frequency signal and the target frequency signal. The second signal generating circuit generates a second signal according to the first signal. The PWM circuit generates a PWM signal according to the second signal. The switching circuit is electrically connected with the PWM circuit and outputs a control signal to control the rotary speed of the motor. Hence, the fan rotary speed controlling device boosts the accuracy and the stability of the fan rotary speed.Type: GrantFiled: February 24, 2011Date of Patent: October 8, 2013Assignee: Delta Electronics, Inc.Inventors: Chung-Hung Tang, Chien-Sheng Lin, Chin-Fa Chiu, Chun-Lung Chiu
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Patent number: 8487574Abstract: A fan rotary speed controlling device includes a base voltage generating circuit, a first voltage generating circuit, a second voltage generating circuit and a compensation controlling circuit. The base voltage generating circuit receives a pulse width modulation signal and outputs a base voltage signal. The first voltage generating circuit receives the pulse width modulation signal and generates a first voltage signal according to the pulse width modulation signal. The second voltage generating circuit receives a fan rotary speed signal and generates a second voltage signal according to the fan rotary speed signal. The compensation controlling circuit outputs a voltage deviation compensation signal according to the first voltage signal and the second voltage signal. Hence, the fan rotary speed controlling device provides a stable rotary speed.Type: GrantFiled: January 4, 2011Date of Patent: July 16, 2013Assignee: Delta Electronics, Inc.Inventors: Chin-Fa Chiu, Chung-Hung Tang
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Publication number: 20120112679Abstract: A fan rotary speed controlling device includes a first signal generating circuit, a second signal generating circuit, a pulse width modulation (PWM) circuit and a switching circuit. The first signal generating circuit receives a real frequency signal and a target frequency signal, and generates a first signal according to the real frequency signal and the target frequency signal. The second signal generating circuit generates a second signal according to the first signal. The PWM circuit generates a PWM signal according to the second signal. The switching circuit is electrically connected with the PWM circuit and outputs a control signal to control the rotary speed of the motor. Hence, the fan rotary speed controlling device boosts the accuracy and the stability of the fan rotary speed.Type: ApplicationFiled: February 24, 2011Publication date: May 10, 2012Inventors: Chung-Hung TANG, Chien-Sheng Lin, Chin-Fa Chiu, Chun-Lung Chiu
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Publication number: 20120086378Abstract: A fan rotary speed controlling device includes a base voltage generating circuit, a first voltage generating circuit, a second voltage generating circuit and a compensation controlling circuit. The base voltage generating circuit receives a pulse width modulation signal and outputs a base voltage signal. The first voltage generating circuit receives the pulse width modulation signal and generates a first voltage signal according to the pulse width modulation signal. The second voltage generating circuit receives a fan rotary speed signal and generates a second voltage signal according to the fan rotary speed signal. The compensation controlling circuit outputs a voltage deviation compensation signal according to the first voltage signal and the second voltage signal. Hence, the fan rotary speed controlling device provides a stable rotary speed.Type: ApplicationFiled: January 4, 2011Publication date: April 12, 2012Inventors: Chin-Fa CHIU, Chung-Hung Tang
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Patent number: 8036518Abstract: A motor and a motor speed control system are disclosed. Two power signal lines and one feedback/speed-control signal line are coupled between a control device and the motor. The two power signal lines electrically connect the control device to the motor. The feedback/speed-control signal line bi-directionally transmits signals coming from the control device to the motor and from the motor to the control device.Type: GrantFiled: September 12, 2008Date of Patent: October 11, 2011Assignee: Delta Electronics, Inc.Inventor: Chin-Fa Chiu
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Patent number: 7994746Abstract: A motor controlling method and apparatus thereof are provided. The control method includes the steps of receiving a switching phase signal of coil while the motor is rotating, for generating a separate signal, comparing the phase signal and the separate signal to generate a first control signal, generating a current feedback signal equivalent to the first control signal, and comparing the current feedback signal and the separate signal for generating a second control signal so as to control the operation of the motor.Type: GrantFiled: April 28, 2008Date of Patent: August 9, 2011Assignee: Delta Electronics, Inc.Inventors: Chin-Fa Chiu, Chun-Lung Chiu, Ming-Shi Tsai
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Patent number: 7915845Abstract: A motor control method and a motor control device are provided. The control method includes the steps of receiving a current feedback signal from a coil switching circuit, while the motor is rotating, for generating a separate signal, and comparing the current feedback signal and the separate signal for generating a motor control signal so as to control the operation of the motor.Type: GrantFiled: April 29, 2008Date of Patent: March 29, 2011Assignee: Delta Electronics, Inc.Inventors: Chung-Hung Tang, Chin-Fa Chiu, Chun-Lung Chiu
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Patent number: 7917323Abstract: A method of adjusting sensitivity of signal interpretation includes the steps of: continuously receiving an input signal; setting a sampling parameter; sampling the input signal according to the sampling parameter to obtain a plurality of sampling signals; judging whether the sampling signals are the same or not; generating a first control signal according to the sampling signals if the sampling signals are the same; and generating a second control signal according to the input signal if the sampling signals are not the same. A device of adjusting the sensitivity of signal interpretation is also disclosed.Type: GrantFiled: December 11, 2007Date of Patent: March 29, 2011Assignee: Delta Electronics, Inc.Inventors: Zong-Hong Tang, Chin-Fa Chiu, Po-Tsun Kuo, Chun-Lung Chiu
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Patent number: 7834571Abstract: A protecting device of a fan system includes at least one first switch element and at least one control unit. The first switch element receives a first input signal. The control unit is electrically connected with the first switch element, receives the first input signal, and controls the first switch element to turn on or turn off according to the first input signal. The control unit stops outputting the first input signal when the first switch element turns on. The control unit outputs the first input signal when the first switch element turns off, so that a fan of the fan system can be driven by the first input signal.Type: GrantFiled: September 17, 2007Date of Patent: November 16, 2010Assignee: Delta Electronics Inc.Inventors: Yu-Hiuan Lin, Chin-Fa Chiu, Chun-Lung Chiu, Ming-Shi Tsai
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Patent number: 7696706Abstract: A fan system includes a stator magnetic pole, a driving unit and a real-time stopping unit. The driving unit is coupled with the stator magnetic pole and controls a polarity change of the stator magnetic pole in accordance with a driving signal. The real-time stopping unit is electrically connected with the driving unit. When the fan system is powered off, the driving unit enables two ends of the stator magnetic pole to have the same voltage level in accordance with a control signal generated by the real-time stopping unit so that the fan system stops operating immediately.Type: GrantFiled: December 14, 2006Date of Patent: April 13, 2010Assignee: Delta Electronics, Inc.Inventors: Chin-Fa Chiu, Chun-Lung Chiu, Wen-Shi Huang
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Publication number: 20090128078Abstract: A motor and a motor speed control system are disclosed. Two power signal lines and one feedback/speed-control signal line are coupled between a control device and the motor. The two power signal lines electrically connect the control device to the motor. The feedback/speed-control signal line bi-directionally transmits signals coming from the control device to the motor and from the motor to the control device.Type: ApplicationFiled: September 12, 2008Publication date: May 21, 2009Applicant: DELTA ELECTRONICS, INC.Inventor: Chin-Fa CHIU
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Patent number: 7521882Abstract: A control device for controlling a motor includes a sensing module, a modifying module and a driving module. The sensing module senses the motor to generate a sensing signal. The modifying module receives the sensing signal and generates a phase modifying signal according to the sensing signal. The driving module receives the phase modifying signal and generates a driving current to drive the motor according to the phase modifying signal.Type: GrantFiled: October 30, 2006Date of Patent: April 21, 2009Assignee: Delta Electronics, Inc.Inventors: Chin-Fa Chiu, Chun-Lung Chiu, Ming-Shi Tsai
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Patent number: 7495401Abstract: A control system for a motor. The control system and the motor receive an external power. The control system comprises a driver and a switch device. The driver is electrically connected to the motor. The switch device is electrically connected between the external power and the driver and turned on or off according to a control signal. The driver drives the motor according to the external power when the switch device is turned on.Type: GrantFiled: November 30, 2006Date of Patent: February 24, 2009Assignee: Delta Electronics Inc.Inventors: Chin-Fa Chiu, Chun-Lung Chiu, Ming-Shi Tsai, Wen-Shi Huang
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Publication number: 20080292290Abstract: A motor controlling method and apparatus thereof are provided. The control method includes the steps of receiving a switching phase signal of coil while the motor is rotating, for generating a separate signal, comparing the phase signal and the separate signal to generate a first control signal, generating a current feedback signal equivalent to the first control signal, and comparing the current feedback signal and the separate signal for generating a second control signal so as to control the operation of the motor.Type: ApplicationFiled: April 28, 2008Publication date: November 27, 2008Inventors: Chin-Fa Chiu, Chun-Lung Chiu, Ming-Shi Tsai
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Publication number: 20080292291Abstract: A motor control method and a motor control device are provided. The control method includes the steps of receiving a current feedback signal from a coil switching circuit, while the motor is rotating, for generating a separate signal, and comparing the current feedback signal and the separate signal for generating a motor control signal so as to control the operation of the motor.Type: ApplicationFiled: April 29, 2008Publication date: November 27, 2008Inventors: Chung-Hung TANG, Chin-Fa Chiu, Chun-Lung Chiu
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Publication number: 20080143313Abstract: A method of adjusting sensitivity of signal interpretation includes the steps of: continuously receiving an input signal; setting a sampling parameter; sampling the input signal according to the sampling parameter to obtain a plurality of sampling signals; judging whether the sampling signals are the same or not; generating a first control signal according to the sampling signals if the sampling signals are the same; and generating a second control signal according to the input signal if the sampling signals are not the same. A device of adjusting the sensitivity of signal interpretation is also disclosed.Type: ApplicationFiled: December 11, 2007Publication date: June 19, 2008Inventors: Zong-Hong TANG, Chin-Fa CHIU, Po-Tsun KUO, Chun-Lung CHIU
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Publication number: 20080075440Abstract: A protecting device of a fan system includes at least one first switch element and at least one control unit. The first switch element receives a first input signal. The control unit is electrically connected with the first switch element, receives the first input signal, and controls the first switch element to turn on or turn off according to the first input signal. The control unit stops outputting the first input signal when the first switch element turns on. The control unit outputs the first input signal when the first switch element turns off, so that a fan of the fan system can be driven by the first input signal.Type: ApplicationFiled: September 17, 2007Publication date: March 27, 2008Inventors: Yu-Hiuan Lin, Chin-Fa Chiu, Chun-Lung Chiu, Ming-Shi Tsai
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Publication number: 20070145923Abstract: A fan system includes a stator magnetic pole, a driving unit and a real-time stopping unit. The driving unit is coupled with the stator magnetic pole and controls a polarity change of the stator magnetic pole in accordance with a driving signal. The real-time stopping unit is electrically connected with the driving unit. When the fan system is powered off, the driving unit enables two ends of the stator magnetic pole to have the same voltage level in accordance with a control signal generated by the real-time stopping unit so that the fan system stops operating immediately.Type: ApplicationFiled: December 14, 2006Publication date: June 28, 2007Inventors: Chin-Fa Chiu, Chun-Lung Chiu, Wen-Shi Huang