Patents by Inventor Yun-Kuo Lee
Yun-Kuo Lee 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: 11962239Abstract: A control circuit of a power converter and a control method thereof are provided. The control circuit includes an error amplifier, a controller, a digital filter, and a digital pulse width signal modulator. The error amplifying circuit is coupled to an output terminal of the power converter and provides a digital error signal. The controller provides a first working parameter corresponding to the first external control command when receiving a first external control command. The digital filter generates a current digital compensation value. The digital pulse width signal modulator generates a pulse width modulation signal. The controller provides a second working parameter corresponding to the second external control command when receiving a second external control command. The controller calculates a transition value according to the second working parameter and the current digital compensation value. The controller provides the second working parameter and the transition value to the digital filter.Type: GrantFiled: September 16, 2022Date of Patent: April 16, 2024Assignee: uPI Semiconductor Corp.Inventors: Yun-Kuo Lee, Wei-Hsiang Wang, Yen-Chih Lin, Wei-Hsiu Hung
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Publication number: 20230138767Abstract: A control circuit of a power converter and a control method thereof are provided. The control circuit includes an error amplifier, a controller, a digital filter, and a digital pulse width signal modulator. The error amplifying circuit is coupled to an output terminal of the power converter and provides a digital error signal. The controller provides a first working parameter corresponding to the first external control command when receiving a first external control command. The digital filter generates a current digital compensation value. The digital pulse width signal modulator generates a pulse width modulation signal. The controller provides a second working parameter corresponding to the second external control command when receiving a second external control command. The controller calculates a transition value according to the second working parameter and the current digital compensation value. The controller provides the second working parameter and the transition value to the digital filter.Type: ApplicationFiled: September 16, 2022Publication date: May 4, 2023Applicant: uPI Semiconductor Corp.Inventors: Yun-Kuo Lee, Wei-Hsiang Wang, Yen-Chih Lin, Wei-Hsiu Hung
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Patent number: 10502790Abstract: The present invention discloses a battery internal resistance measuring device and a method thereof, wherein the battery internal resistance measuring device comprises a voltage detecting unit, at least one measurement resistor, at least one switch, and a measurement controller. By means of further explanation, the measurement controller at least comprises a differential value calculating unit for treating a differential value calculation or a slope calculation to each two of adjacent voltage sampling values on a waveform of a discharge voltage signal of the battery, such that the measurement controller can subsequently find out a discharge starting point and a discharge ending point according to data of the differential value calculations or the slope calculations. Eventually, the measurement controller calculates an internal resistance of the battery after picking up an open-circuit voltage and a short-circuit voltage from the discharge starting point and the discharge ending point.Type: GrantFiled: December 20, 2017Date of Patent: December 10, 2019Assignee: Prolific Technology Inc.Inventors: Yun-Kuo Lee, Chia-Chang Hsu, Ren-Yuan Yu, Ching-Te Chen
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Patent number: 10082543Abstract: In view of drivers cannot equip their vehicles with conventional intelligent battery monitoring system by themselves because the wire connections of the intelligent battery monitoring system are complex, the present invention particularly discloses a non-contact intelligent battery sensing system showing the advantages of simple circuit framework and low manufacturing cost. Since the non-contact intelligent battery sensing system only comprises a magnetic field sensor and a sensor controlling module, it is very easy for the drivers to equip their vehicles with this non-contact intelligent battery sensing system by themselves. To apply the non-contact intelligent battery sensing system, the driver just needs to firstly dispose the magnetic field sensor at one position near to a power line of a battery to be sensed, and then install a sensor controlling application program in his smart phones. Apparently, the non-contact intelligent battery sensing system further shows the advantage of easy to be installed.Type: GrantFiled: April 27, 2017Date of Patent: September 25, 2018Assignee: Prolific Technology Inc.Inventors: Yun-Kuo Lee, Chia-Chang Hsu, Ren-Yuan Yu, Ching-Te Chen, Ke-Ciang Shen
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Publication number: 20180203075Abstract: The present invention discloses a battery internal resistance measuring device and a method thereof, wherein the battery internal resistance measuring device comprises a voltage detecting unit, at least one measurement resistor, at least one switch, and a measurement controller. By means of further explanation, the measurement controller at least comprises a differential value calculating unit for treating a differential value calculation or a slope calculation to each two of adjacent voltage sampling values on a waveform of a discharge voltage signal of the battery, such that the measurement controller can subsequently find out a discharge starting point and a discharge ending point according to data of the differential value calculations or the slope calculations. Eventually, the measurement controller calculates an internal resistance of the battery after picking up an open-circuit voltage and a short-circuit voltage from the discharge starting point and the discharge ending point.Type: ApplicationFiled: December 20, 2017Publication date: July 19, 2018Inventors: YUN-KUO LEE, CHIA-CHANG HSU, REN-YUAN YU, CHING-TE CHEN
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Publication number: 20180180679Abstract: In view of drivers cannot equip their vehicles with conventional intelligent battery monitoring system by themselves because the wire connections of the intelligent battery monitoring system are complex, the present invention particularly discloses a non-contact intelligent battery sensing system showing the advantages of simple circuit framework and low manufacturing cost. Since the non-contact intelligent battery sensing system only comprises a magnetic field sensor and a sensor controlling module, it is very easy for the drivers to equip their vehicles with this non-contact intelligent battery sensing system by themselves. To apply the non-contact intelligent battery sensing system, the driver just needs to firstly dispose the magnetic field sensor at one position near to a power line of a battery to be sensed, and then install a sensor controlling application program in his smart phones. Apparently, the non-contact intelligent battery sensing system further shows the advantage of easy to be installed.Type: ApplicationFiled: April 27, 2017Publication date: June 28, 2018Inventors: YUN-KUO LEE, CHIA-CHANG HSU, REN-YUAN YU, CHING-TE CHEN, KE-CIANG SHEN
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Patent number: 9989432Abstract: An impedance sensor and an electronic apparatus using the same are provided. The impedance sensor includes an impedance-bridge circuit, a compensation circuit, and a signal processing circuit. The impedance-bridge circuit has an input side and an output side, and configured to generate a first impedance variation in response to a physical pressure. The compensation circuit is coupled to the input side of the impedance-bridge circuit in parallel, and configured to generate a second impedance variation in response to an environment temperature. The signal processing circuit respectively detects the first and the second impedance variations, and accordingly generates a first sensing signal indicating the first impedance variation and a second sensing signal indicating the second impedance variation, so as to compensate a temperature shift part of the first sensing signal by the second sensing signal and accordingly generate a pressure detection signal.Type: GrantFiled: July 22, 2016Date of Patent: June 5, 2018Assignees: PROLIFIC TECHNOLOGY INC., UniSense Technology Co., LtdInventors: Chiung-An Chen, Yun-Kuo Lee, Chih-Yuan Hung, Jia-Chun Huang, Yeow-Chin Chen, Shu-Fan Wu
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Publication number: 20170207049Abstract: A system for actively detecting an alternating current (AC) load includes a first power interface, a second power interface, a switch unit, and a control unit. The first power interface is coupled to an AC source to receive and provide an AC voltage. The second power interface is configured to be coupled to an electronic equipment to provide the AC source to the electronic equipment and provide a connection signal according to whether the electronic equipment is coupled to the second power interface. The switch unit is coupled between the first power interface and the second power interface and receives a switch signal to determine whether the AC voltage is transmitted to the second power interface. The control unit is coupled to the second power interface and the switch unit to provide the switch signal according to the connection signal.Type: ApplicationFiled: November 7, 2016Publication date: July 20, 2017Applicant: PROLIFIC TECHNOLOGY INC.Inventors: Chih-Chin Yang, Chia-Chang Hsu, Yun-Kuo Lee
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Publication number: 20170023428Abstract: An impedance sensor and an electronic apparatus using the same are provided. The impedance sensor includes an impedance-bridge circuit, a compensation circuit, and a signal processing circuit. The impedance-bridge circuit has an input side and an output side, and configured to generate a first impedance variation in response to a physical pressure. The compensation circuit is coupled to the input side of the impedance-bridge circuit in parallel, and configured to generate a second impedance variation in response to an environment temperature. The signal processing circuit respectively detects the first and the second impedance variations, and accordingly generates a first sensing signal indicating the first impedance variation and a second sensing signal indicating the second impedance variation, so as to compensate a temperature shift part of the first sensing signal by the second sensing signal and accordingly generate a pressure detection signal.Type: ApplicationFiled: July 22, 2016Publication date: January 26, 2017Applicants: PROLIFIC TECHNOLOGY INC., UniSense Technology Co., LtdInventors: Chiung-An Chen, Yun-Kuo Lee, Chih-Yuan Hung, Jia-Chun Huang, Yeow-Chin Chen, Shu-Fan Wu
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Patent number: 7895386Abstract: A USB interface provided with USB host/device function and its control method is disclosed. The USB interface includes a control unit, a USB host, a USB device, a memory, a port router and a plurality of connection ports. The control unit is used to define the connection ports to be either an upstream port or downstream port. It also controls signal flows within the USB control interface. The signal flows are provided for the USB host and the USB device. The memory is used to store data during the operation of the USB control interface. The USB host is coupled to an external device via the port router, and the USB device is coupled to an external host via the port router.Type: GrantFiled: January 25, 2007Date of Patent: February 22, 2011Assignee: Prolific Technology Inc.Inventors: Po-Ching Chen, Yun-Kuo Lee
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Publication number: 20070180181Abstract: A USB interface provided with USB host/device function and its control method is disclosed. The USB interface includes a control unit, a USB host, a USB device, a memory, a port router and a plurality of connection ports. The control unit is used to define the connection ports to be either an upstream port or downstream port. It also controls signal flows within the USB control interface. The signal flows are provided for the USB host and the USB device. The memory is used to store data during the operation of the USB control interface. The USB host is coupled to an external device via the port router, and the USB device is coupled to an external host via the port router.Type: ApplicationFiled: January 25, 2007Publication date: August 2, 2007Inventors: Po-Ching Chen, Yun-Kuo Lee
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Patent number: 7240369Abstract: A plug and play device and an access control method, in which the plug and play device includes an access control device and a main function device. When the plug and play device is connected to a host, the access control device is first connected to the host to execute an authorization procedure. The user is not authorized if the authentication procedure rejects the user. In this case, the plug and play device denies the host control. Conversely, the user is authorized if the authentication procedure approves the user. In this case, the plug and play device connects the main function device to the host and accepts control by the host. After the host loads a proper driver, it may control the plug and play device.Type: GrantFiled: April 30, 2003Date of Patent: July 3, 2007Assignee: Prolific Technology Inc.Inventors: Wen-Hwa Chou, Yun-Kuo Lee
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Publication number: 20060265869Abstract: A method of installing a driver and software for a plug and play device is provided, wherein the plug and play device includes a main function device and a storage device meeting a standard specification. The storage device stores a driver and software required by the main function device. The main function device and storage device may be connected to the host in two different ways after the plug and play device is installed to the host. The first way is to connect the two devices to the host simultaneously. The host loads a built-in standard driver for the storage device from the host to access the storage device, and then loads the driver and software required by the main function device from the storage device to gain freely access to the main function device. The second way is to connect the storage device to the host, and to cause the host to copy the main function device driver and software from the storage device to the host's storage device (e.g., a disk drive).Type: ApplicationFiled: August 10, 2006Publication date: November 30, 2006Inventors: Wen-Hwa Chou, Yun-Kuo Lee
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Patent number: 7124235Abstract: A USB apparatus includes an upstream port, a downstream port, a connection detector and a controller. The connection detector is connected to the upstream port and the downstream port, and is for detecting connection statuses of the upstream port and the downstream port to generate a detecting signal accordingly. The controller is used for controlling the USB apparatus to be operated at a host mode or a hub mode according to the detection signal and control method.Type: GrantFiled: July 8, 2004Date of Patent: October 17, 2006Assignee: Prolific Technology Inc.Inventors: Chi-Jane Lee, Yun-Kuo Lee
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Patent number: 7117589Abstract: A method of installing a driver for a plug and play device is provided, wherein the plug and play device includes a main function device and a storage device meeting a standard specification. The storage device stores a driver required by the main function device. The main function device and storage device may be connected to the host in two different ways after the plug and play device is installed to the host. The first way is to connect the two devices to the host simultaneously. The host loads a built-in standard driver for the storage device from the host to access the storage device, and then loads the driver required by the main function device from the storage device to gain freely access to the main function device. The second way is to connect the storage device to the host, and to cause the host to copy the main function device driver from the storage device to the host's storage device (e.g., a disk drive). Next, the main function device is connected to the host.Type: GrantFiled: April 30, 2003Date of Patent: October 10, 2006Assignee: Prolific Technology Inc.Inventors: Wen-Hwa Chou, Yun-Kuo Lee
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Publication number: 20040243755Abstract: A USB apparatus includes an upstream port, a downstream port, a connection detector and a controller. The connection detector is connected to the upstream port and the downstream port, and is for detecting connection statuses of the upstream port and the downstream port to generate a detecting signal accordingly. The controller is used for controlling the USB apparatus to be operated at a host mode or a hub mode according to the detection signal and control method.Type: ApplicationFiled: July 8, 2004Publication date: December 2, 2004Inventors: Chi-Jane Lee, Yun-Kuo Lee
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Patent number: 6707332Abstract: A clock generating circuit and method thereof is provided. The frequency ratio between the output clock and the system clock is calculated as that the first preset value divides by the second preset value. A data value is stored into a register. The sum of the data value and the first preset value is calculated as a first result by the first adder. The sum of the first result and the second preset value is calculated as a second result by the second adder. A multiplexer (MUX) is used to select the data value that should be stored into the register at next system clock from the first result and the second result according to the level of the output clock. The first result is compared with a reference value by the first comparator to generate the output clock, so that the frequency of the output clock can be changed arbitrarily and it is not required to redesign the circuit.Type: GrantFiled: February 26, 2003Date of Patent: March 16, 2004Assignee: Prolific Technology Inc.Inventor: Yun-Kuo Lee
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Publication number: 20030204950Abstract: A method of installing a driver for a plug and play device is provided, wherein the plug and play device includes a main function device and a storage device meeting a standard specification. The storage device stores a driver required by the main function device. The main function device and storage device may be connected to the host in two different ways after the plug and play device is installed to the host. The first way is to connect the two devices to the host simultaneously. The host loads a built-in standard driver for the storage device from the host to access the storage device, and then loads the driver required by the main function device from the storage device to gain freely access to the main function device. The second way is to connect the storage device to the host, and to cause the host to copy the main function device driver from the storage device to the host's storage device (e.g., a disk drive). Next, the main function device is connected to the host.Type: ApplicationFiled: April 30, 2003Publication date: November 6, 2003Inventors: Wen-Hwa Chou, Yun-Kuo Lee
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Publication number: 20030208698Abstract: A plug and play device and an access control method, in which the plug and play device includes an access control device and a main function device. When the plug and play device is connected to a host, the access control device is first connected to the host to execute an authorization procedure. The user is not authorized if the authentication procedure rejects the user. In this case, the plug and play device denies the host control. Conversely, the user is authorized if the authentication procedure approves the user. In this case, the plug and play device connects the main function device to the host and accepts control by the host. After the host loads a proper driver, it may control the plug and play device.Type: ApplicationFiled: April 30, 2003Publication date: November 6, 2003Inventors: Wen-Hwa Chou, Yun-Kuo Lee