Patents by Inventor Chin-Jui Liu
Chin-Jui Liu 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: 11921164Abstract: A battery pack for an information handling system includes a battery cell configured to provide current to the information handling system, and a battery management unit including an output to the information handling system. The output provides a maximum continuous current (MCC) indication and a peak power (PP) indication. The battery management unit determines an amount of current that the battery cell provides to the information handling system and determines an optimum MCC value that the battery cell can provide to the information handling system. The battery management unit further provides a first value on the PP indication, the first value being greater than the optimum MCC value, sums the amount of current provided to the information handling system that is in excess of the optimum MCC value, determines that the sum is greater than a threshold, and provides a second value on the PP indication, the second value being less than the optimum MCC value.Type: GrantFiled: June 16, 2021Date of Patent: March 5, 2024Assignee: Dell Products L.P.Inventors: Wen-Yung Chang, Chin-Jui Liu, Chien-Hao Chiu
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Publication number: 20240003985Abstract: Systems and methods that may be implemented to determine electrical characteristic/s of one or more power supply cable/s that are coupled to supply power from a power supply to a battery-powered information handling system, and to take one or more actions based on the determined electrical characteristic/s. The disclosed systems and methods may be so implemented to detect values of input voltage and input current that are provided from the power supply cable to a battery-powered information handling system, and to take one or more actions based on these detected values of input voltage and input current, such as power supply voltage compensation, protection of the power supply, alerts to the battery-powered information handling system, and/or warnings to a user of the battery-powered information handling system.Type: ApplicationFiled: June 29, 2022Publication date: January 4, 2024Inventors: Merle Wood, III, Chin-Jui Liu, Chi-Che Wu, Tsung-Cheng Liao, Wei-Cheng Yu
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Publication number: 20230352941Abstract: A method and system for supplying power at a voltage selected from a plurality of voltages. Power is initially received at a first voltage. Embodiments communicate with an AC adapter to get device identification and see if the AC adapter supports other voltages. If so, embodiments communicate with the AC adapter to get more information about the adapter and identify what voltages the adapter is capable of providing. If one of the voltages would allow an information handling system to operate more efficiently, embodiments negotiate a power supply contract to operate at a second voltage. When the information handling system powers down, the system resets to operation at the initial voltage.Type: ApplicationFiled: April 28, 2022Publication date: November 2, 2023Inventors: Wei-Cheng Yu, Merle Jackson Wood, Tsung-Cheng Liao, Chin-Jui Liu, Andrew Thomas Sultenfuss, Chi Che Wu
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Publication number: 20220404423Abstract: A battery pack for an information handling system includes a battery cell configured to provide current to the information handling system, and a battery management unit including an output to the information handling system. The output provides a maximum continuous current (MCC) indication and a peak power (PP) indication. The battery management unit determines an amount of current that the battery cell provides to the information handling system and determines an optimum MCC value that the battery cell can provide to the information handling system. The battery management unit further provides a first value on the PP indication, the first value being greater than the optimum MCC value, sums the amount of current provided to the information handling system that is in excess of the optimum MCC value, determines that the sum is greater than a threshold, and provides a second value on the PP indication, the second value being less than the optimum MCC value.Type: ApplicationFiled: June 16, 2021Publication date: December 22, 2022Inventors: Wen-Yung Chang, Chin-Jui Liu, Chien-Hao Chiu
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Publication number: 20220308607Abstract: Monolithic power stage (Pstage) packages and methods for using same are provided that may be implemented to provide lower thermal resistance/enhanced thermal performance, reduced noise, and/or smaller package footprint than conventional monolithic Pstage packages. The conductive pads of the disclosed Pstage packages may be provided with a larger surface area for contacting respective conductive layers of a mated PCB to provide a more effective and increased heat transfer away from a monolithic Pstage package. In one example, the increased heat transfer away from the monolithic Pstage package results in lower monolithic Pstage package operating temperature and increased power output.Type: ApplicationFiled: March 24, 2021Publication date: September 29, 2022Inventors: Merle Wood, III, Chin-Jui Liu, Shiguo Luo, Feng-Yu Wu
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Patent number: 11431186Abstract: A method may include, in a management controller of an information handling system including a power system configured to provide electrical energy to information handling resources of the information handling system, the power system having a direct-current input power source, a rechargeable energy storage device coupled to and rechargeable from the direct-current input power source, and a charger configured to control recharging of the rechargeable energy storage device from the direct-current input power source: retrieving parameters from one or more registers associated with the rechargeable energy storage device, the parameters including a desired voltage across terminals of the rechargeable energy storage device and a desired current for recharging the rechargeable energy storage device during a constant current mode of a charging cycle of the rechargeable energy storage device and communicating the parameters to the charger such that the charger controls recharging of the rechargeable energy storage deType: GrantFiled: April 24, 2020Date of Patent: August 30, 2022Assignee: Dell Products L.P.Inventors: Chin-Jui Liu, Merle J. Wood, Adolfo S. Montero, Yu-Chi Chin
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Patent number: 11347290Abstract: Power monitor information in an information handling system may be adjusted based on a battery voltage to account for a battery discharge state. The power monitor information may be scaled higher when the battery voltage is low to encourage the system to throttle and decrease power consumption. This adjustment increases the likelihood that the battery remains within safe operating limits.Type: GrantFiled: August 4, 2017Date of Patent: May 31, 2022Assignee: DELL PRODUCTS L.P.Inventors: Mohammed Hijazi, Merle J. Wood, III, Christian L. Critz, Chin-Jui Liu
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Publication number: 20210336466Abstract: A method may include, in a management controller of an information handling system including a power system configured to provide electrical energy to information handling resources of the information handling system, the power system having a direct-current input power source, a rechargeable energy storage device coupled to and rechargeable from the direct-current input power source, and a charger configured to control recharging of the rechargeable energy storage device from the direct-current input power source: retrieving parameters from one or more registers associated with the rechargeable energy storage device, the parameters including a desired voltage across terminals of the rechargeable energy storage device and a desired current for recharging the rechargeable energy storage device during a constant current mode of a charging cycle of the rechargeable energy storage device and communicating the parameters to the charger such that the charger controls recharging of the rechargeable energy storage deType: ApplicationFiled: April 24, 2020Publication date: October 28, 2021Applicant: Dell Products L.P.Inventors: Chin-Jui LIU, Merle J. WOOD, Adolfo S. MONTERO, Yu-Chi CHIN
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Publication number: 20190041953Abstract: Power monitor information in an information handling system may be adjusted based on a battery voltage to account for a battery discharge state. The power monitor information may be scaled higher when the battery voltage is low to encourage the system to throttle and decrease power consumption. This adjustment increases the likelihood that the battery remains within safe operating limits.Type: ApplicationFiled: August 4, 2017Publication date: February 7, 2019Applicant: Dell Products L.P.Inventors: Mohammed Hijazi, Merle J. Wood, III, Christian L. Critz, Chin-Jui Liu
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Patent number: 10067834Abstract: Embodiments of information handling systems and methods are provided herein for resetting one or more system components in response to a watchdog timer (WDT) event. More specifically, the present disclosure provides information handling systems and methods for handling WDT events that occur within information handling systems comprising enhanced Serial Peripheral Interface (eSPI) master and slave devices.Type: GrantFiled: October 5, 2017Date of Patent: September 4, 2018Assignee: Dell Products LPInventors: Adolfo S. Montero, Chin-Jui Liu
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Patent number: 8938635Abstract: A method for managing an alternating current adaptor system is disclosed. A direct current voltage is received at a high impedance power delivery network from a primary side of an alternating current adaptor system. An isolated voltage is output from the high impedance power delivery network to components of a secondary side of the alternating current adaptor system. A transition in a power state identification of an information handling system associated with the alternating current adaptor system is detected. An output voltage level of the alternating current adaptor system is alternated in response to the transition in the power state identification of the information handling system.Type: GrantFiled: August 26, 2013Date of Patent: January 20, 2015Assignee: Dell Products, LPInventors: Yung Fa Chueh, Chih-Chieh Yin, Chin-Jui Liu, Hsien Tsung Lin
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Patent number: 8683241Abstract: A method for reducing current leakage in a battery in communication with an information handling system (IHS). The method includes providing a battery management unit (BMU) in the battery, the BMU in communication with an embedded controller (EC), the BMU in a standby mode while the battery is coupled to the IHS, and configuring the BMU to exit the standby mode if an external power supply is coupled to the IHS. Also disclosed is an IHS which includes an EC in communication with a BMU, a power switch in communication with the EC and the BMU, and a control switch configured to be switched on if an external power supply is coupled to the IHS or if the power switch is activated without the external power supply, wherein the BMU unit exits the standby mode if the control switch is switched on.Type: GrantFiled: December 25, 2009Date of Patent: March 25, 2014Assignee: Dell Products L.P.Inventors: Hsien Tsung Lin, Chih-Chieh Yin, Chin-Jui Liu
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Patent number: 8543859Abstract: A method for managing an alternating current adaptor system is disclosed. A direct current voltage is received at a high impedance power delivery network from a primary side of an alternating current adaptor system. An isolated voltage is output from the high impedance power delivery network to components of a secondary side of the alternating current adaptor system. A transition in a power state identification of an information handling system associated with the alternating current adaptor system is detected. An output voltage level of the alternating current adaptor system is alternated in response to the transition in the power state identification of the information handling system.Type: GrantFiled: March 12, 2010Date of Patent: September 24, 2013Assignee: Dell Products, LPInventors: Yung Fa Chueh, Chih-Chieh Yin, Chin-Jui Liu, Hsien Tsung Lin
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Patent number: 8259120Abstract: A system and method for resolving the blank screen issue when switching between graphics processing units. The system and method provide a graphics adapter LCD timing controller (Tcon) with a frame buffer specifically dedicated to storing previously presented screen data for use when switching graphic processing units. The system further includes a protocol comparator unit within a serial-to-parallel converter and a memory controller coupled to the protocol comparator.Type: GrantFiled: June 2, 2010Date of Patent: September 4, 2012Assignee: Dell Products L.P.Inventors: Chin-Jui Liu, Wei-Kuang Chu
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Patent number: 8200852Abstract: Methods and systems are described for utilizing multi-mode dongles with peripheral devices. The multi-mode dongles are configured to provide standard mode signals for a standard mode of operation and alternate mode signals for an alternate mode of operation, for example, where a host information handling system is unable to provide the alternate mode signals to the peripheral device. The multi-mode dongle receives mode control signals from a host information handling system and automatically switches from a standard mode of operation to an alternate mode of operation, where the alternate mode signals are provided to the peripheral device, based upon the mode control signals. In one embodiment, the multi-mode dongle can be configured for a universal serial bus (USB) port, and the alternate mode signals can be associated with charging a consumer electronics (CE) device.Type: GrantFiled: October 9, 2009Date of Patent: June 12, 2012Assignee: Dell Products, L.P.Inventors: Chin-Jui Liu, Bo Hom, Hsien-Tsung Lin
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Publication number: 20120054502Abstract: A voltage regulator for use with switchable graphics processors. The voltage regulator includes a graphics processor mode selection control input. By providing the graphics processor mode selection control input it is possible to save pins for a parallel voltage identification (PVID) input (e.g., a 2-bit PVID input). The voltage regulator further includes a PVID input to allow the voltage regulator to switch a detection input to either a SVID type input or a PVID type input. The voltage regulator further includes voltage shifter for a PVID detection circuit.Type: ApplicationFiled: August 31, 2010Publication date: March 1, 2012Inventors: Yung Fa Chueh, Chin-Jui Liu, So-Yu Weng, Wen-Hung Huang
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Publication number: 20110298812Abstract: A system and method for resolving the blank screen issue when switching between graphics processing units. The system and method provide a graphics adapter LCD timing controller (Tcon) with a frame buffer specifically dedicated to storing previously presented screen data for use when switching graphic processing units. The system further includes a protocol comparator unit within a serial-to-parallel converter and a memory controller coupled to the protocol comparator.Type: ApplicationFiled: June 2, 2010Publication date: December 8, 2011Inventors: CHIN-JUI LIU, WEI-KUANG CHU
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Publication number: 20110225441Abstract: A method for managing an alternating current adaptor system is disclosed. A direct current voltage is received at a high impedance power delivery network from a primary side of an alternating current adaptor system. An isolated voltage is output from the high impedance power delivery network to components of a secondary side of the alternating current adaptor system. A transition in a power state identification of an information handling system associated with the alternating current adaptor system is detected. An output voltage level of the alternating current adaptor system is alternated in response to the transition in the power state identification of the information handling system.Type: ApplicationFiled: March 12, 2010Publication date: September 15, 2011Applicant: DELL PRODUCTS, LPInventors: Yung Fa Chueh, Chih-Chieh Yin, Chin-Jui Liu, Hsien Tsung Lin
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Publication number: 20110161699Abstract: A method for reducing current leakage in a battery in communication with an information handling system (IHS) is disclosed herein. The method includes providing a battery management unit (BMU) in the battery, the BMU in communication with an embedded controller, wherein the BMU comprises a detector pin. The method further includes placing the BMU in a standby mode to disable power from the battery to the IHS while the battery is coupled to the IHS, and configuring the BMU to exit the standby mode, if an external power supply is coupled to the IHS, to enable battery power from the battery to the IHS. Also disclosed is an information handling system (IHS) which includes an embedded controller operable to initiate a power-on sequence in the IHS, and a battery having a battery management unit (BMU), wherein the BMU is initially placed in a standby mode to disable battery power to the IHS, the BMU in communication with the embedded controller.Type: ApplicationFiled: December 25, 2009Publication date: June 30, 2011Applicant: DELL PRODUCTS L.P.Inventors: Hsien Tsung Lin, Chih-Chieh Yin, Chin-Jui Liu
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Publication number: 20110087805Abstract: Methods and systems are described for utilizing multi-mode dongles with peripheral devices. The multi-mode dongles are configured to provide standard mode signals for a standard mode of operation and alternate mode signals for an alternate mode of operation, for example, where a host information handling system is unable to provide the alternate mode signals to the peripheral device. The multi-mode dongle receives mode control signals from a host information handling system and automatically switches from a standard mode of operation to an alternate mode of operation, where the alternate mode signals are provided to the peripheral device, based upon the mode control signals. In one embodiment, the multi-mode dongle can be configured for a universal serial bus (USB) port, and the alternate mode signals can be associated with charging a consumer electronics (CE) device.Type: ApplicationFiled: October 9, 2009Publication date: April 14, 2011Inventors: Chin-Jui Liu, Bo Hom, Hsien-Tsung Lin