Patents by Inventor Wen-Yung Chang
Wen-Yung Chang 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: 11670809Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes: may determine that a rechargeable cell of multiple rechargeable cells has reached a top of charge voltage value; in response to determining that the rechargeable cell has reached the top of charge voltage value, may provide an electrical charge current, associated with a charge current value, to the rechargeable cell; may determine a temperature value associated with the rechargeable cell; may determine a charge current termination value based at least on the temperature value; while the charge current value is not at and is not below the charge current termination value: may determine the temperature value associated with the rechargeable cell; and may determine the charge current termination value based at least on the temperature value; and may cease providing the electrical charge current to the rechargeable cell.Type: GrantFiled: April 21, 2021Date of Patent: June 6, 2023Assignee: Dell Products L.P.Inventors: Richard Christopher Thompson, Shao Szu Ho, Wen-Yung Chang
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Publication number: 20230113227Abstract: Managing a battery of an information handling system, including determining a degradation factor of the battery based on one or more parameters of the battery; determining a first thermal stress time of the battery over a first time period, including: identifying a voltage of the battery over the first time period; identifying a temperature of the battery over the first time period; calculating the first thermal stress time of the battery over the first time period based on the voltage and the temperature of the battery over the first time period; comparing the first thermal stress time of the battery of the first time period to a time threshold, the time threshold based on the degradation factor of the battery; determining, based on the comparison, that the first thermal stress time of the battery is greater than the time threshold, and in response, adjusting a charge voltage of the battery.Type: ApplicationFiled: October 8, 2021Publication date: April 13, 2023Inventors: Bruce A. Miller, Wen-Yung Chang, Yan Ning, Jui-Chin Fang
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Publication number: 20230022911Abstract: An information handling system is configured to implement a battery management method and perform battery management operations including receiving information indicative of an operating system associated with the information handling system and determining a battery behavior environment (BBE) based, at least in part, on the operating system. A battery management unit (BMU) profile associated with the battery behavior environment may be selected, wherein the BMU profile indicates settings for one or more battery management parameters. The BMU is then configured in accordance with the BMU profile and the battery is managed in accordance with the BMU profile.Type: ApplicationFiled: July 23, 2021Publication date: January 26, 2023Applicant: Dell Products L.P.Inventors: Chia-Fa CHANG, Shao-Szu HO, Wen-Yung CHANG, Adolfo S. MONTERO, Chien-Hao CHIU
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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: 20220344731Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes: may determine that a rechargeable cell of multiple rechargeable cells has reached a top of charge voltage value; in response to determining that the rechargeable cell has reached the top of charge voltage value, may provide an electrical charge current, associated with a charge current value, to the rechargeable cell; may determine a temperature value associated with the rechargeable cell; may determine a charge current termination value based at least on the temperature value; while the charge current value is not at and is not below the charge current termination value: may determine the temperature value associated with the rechargeable cell; and may determine the charge current termination value based at least on the temperature value; and may cease providing the electrical charge current to the rechargeable cell.Type: ApplicationFiled: April 21, 2021Publication date: October 27, 2022Inventors: Richard Christopher Thompson, Shao Szu Ho, Wen-Yung Chang
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Patent number: 11467641Abstract: A power adaptor system may comprise a power source supplying input voltage according to a dynamic power rating to an operably connected host information handling system, a power source identification (PSID) module of the power adaptor receiving an adjustable setting voltage from the power source via a setting voltage port of the PSID module, and a controller of the PSID module executing code instructions to select the dynamic power rating for the power source based on a measurement of the adjustable setting voltage indicating an operating condition of the power adaptor or based on an indication of an operating condition the operably connected host information handling system, wherein the dynamic power rating is one of a plurality of dynamic power ratings in including an adjustable range of power levels at each dynamic power rating at which the power source is capable of operating.Type: GrantFiled: January 15, 2019Date of Patent: October 11, 2022Assignee: Dell Products, LPInventors: Wei-Cheng Yu, Tsung-Cheng Liao, Tun-Chieh Liang, Wen-Yung Chang, Chi-Che Wu
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Patent number: 11466972Abstract: Systems and methods may be implemented separately from (and external to) a battery system to detect swollen battery system components within a chassis enclosure of the information handling system, without any physical contact with the battery cells or battery system, and without requiring premature opening of the information handling system chassis enclosure to inspect for battery system swelling. A system user may be automatically warned of detected battery system swelling and/or battery system charging may be automatically terminated upon detected battery system swelling so that information handling system failure and/or system service costs that would otherwise be expended to repair damage caused by swollen battery system components may be prevented.Type: GrantFiled: April 27, 2020Date of Patent: October 11, 2022Assignee: Dell Products L.P.Inventors: Shao-Szu Ho, Shih-Chang Hu, Wen-Yung Chang, Chin-Yuan Chiang
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Patent number: 11442519Abstract: The present disclosure provides various embodiments of an external power supply and methods to enhance the output power delivered by an external power supply to a power consuming load. As described in more detail below, the embodiments disclosed herein enable an external power supply to deliver a higher than maximum output power for short periods of time when ambient temperatures within the external power supply are low. As the ambient temperature increases, the embodiments disclosed herein throttle (or incrementally reduce) the output power delivered by the external power supply until the maximum output power specified for the power supply is reached. Although not strictly limited to such, the external power supply may be a Universal Serial Bus (USB)-enabled AC/DC adapter, and more specifically, a USB Power Deliver (USB-PD) AC/DC adapter, in some embodiments.Type: GrantFiled: February 23, 2021Date of Patent: September 13, 2022Assignee: Dell Products L.P.Inventors: Wei Cheng Yu, Geroncio O. Tan, Merle Wood, III, Chi Che Wu, Tsung-Cheng Liao, Wen-Yung Chang
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Patent number: 11437914Abstract: As an example, a power supply may provide a particular voltage of multiple voltages based on a power profile provided by a universal serial bus Type C (USB-C) integrated circuit (IC) built-in to a USB-C port of a computing device. A power factor correction (PFC) converter may provide an output voltage that varies according to the power profile. The output voltage of the PFC converter may be used as an input to an inductor-inductor-capacitor (LLC) converter. The LLC converter may produce an output voltage that varies in voltage level proportionally to the PFC converter output voltage. The PFC converter may provide a voltage to the LLC converter that causes the LLC converter to provide an amount of voltage indicated in the power profile sent by the USB-C IC of the computing device.Type: GrantFiled: February 12, 2020Date of Patent: September 6, 2022Assignee: Dell Products L.P.Inventors: Wei-Cheng Yu, Merle Jackson Wood, III, Tsung-Cheng Liao, Geroncio Ong Tan, James C C Wu, Wen-Yung Chang
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Publication number: 20220269327Abstract: The present disclosure provides various embodiments of an external power supply and methods to enhance the output power delivered by an external power supply to a power consuming load. As described in more detail below, the embodiments disclosed herein enable an external power supply to deliver a higher than maximum output power for short periods of time when ambient temperatures within the external power supply are low. As the ambient temperature increases, the embodiments disclosed herein throttle (or incrementally reduce) the output power delivered by the external power supply until the maximum output power specified for the power supply is reached. Although not strictly limited to such, the external power supply may be a Universal Serial Bus (USB)-enabled AC/DC adapter, and more specifically, a USB Power Deliver (USB-PD) AC/DC adapter, in some embodiments.Type: ApplicationFiled: February 23, 2021Publication date: August 25, 2022Inventors: Wei Cheng Yu, Geroncio O. Tan, Merle Wood, III, Chi Che Wu, Tsung-Cheng Liao, Wen-Yung Chang
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Publication number: 20210333084Abstract: Systems and methods may be implemented separately from (and external to) a battery system to detect swollen battery system components within a chassis enclosure of the information handling system, without any physical contact with the battery cells or battery system, and without requiring premature opening of the information handling system chassis enclosure to inspect for battery system swelling. A system user may be automatically warned of detected battery system swelling and/or battery system charging may be automatically terminated upon detected battery system swelling so that information handling system failure and/or system service costs that would otherwise be expended to repair damage caused by swollen battery system components may be prevented.Type: ApplicationFiled: April 27, 2020Publication date: October 28, 2021Inventors: Shao-Szu Ho, Shih-Chang Hu, Wen-Yung Chang, Chin-Yuan Chiang
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Publication number: 20210326630Abstract: A computing device for extracting target data from a source document includes: a memory storing target data extraction rules; a processor connected with the memory, the processor configured to: obtain text recognition data extracted from an image of the source document, the text recognition data indicating locations of text structures in the source document; define text lines based on the text recognition data; identify a reference string from the text recognition data; select a subset of the text lines based on a location of the reference string and the target data extraction rules; and output the subset of the text lines as the target data.Type: ApplicationFiled: April 17, 2020Publication date: October 21, 2021Inventors: Dongqing Chen, Wen-Yung Chang, David S. Koch
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Publication number: 20210249961Abstract: As an example, a power supply may provide a particular voltage of multiple voltages based on a power profile provided by a universal serial bus Type C (USB-C) integrated circuit (IC) built-in to a USB-C port of a computing device. A power factor correction (PFC) converter may provide an output voltage that varies according to the power profile. The output voltage of the PFC converter may be used as an input to an inductor-inductor-capacitor (LLC) converter. The LLC converter may produce an output voltage that varies in voltage level proportionally to the PFC converter output voltage. The PFC converter may provide a voltage to the LLC converter that causes the LLC converter to provide an amount of voltage indicated in the power profile sent by the USB-C IC of the computing device.Type: ApplicationFiled: February 12, 2020Publication date: August 12, 2021Inventors: WEI-CHENG YU, MERLE JACKSON WOOD, III, TSUNG-CHENG LIAO, GERONCIO ONG TAN, JAMES CC WU, WEN-YUNG CHANG
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Publication number: 20200225721Abstract: A power adaptor system may comprise a power source supplying input voltage according to a dynamic power rating to an operably connected host information handling system, a power source identification (PSID) module of the power adaptor receiving an adjustable setting voltage from the power source via a setting voltage port of the PSID module, and a controller of the PSID module executing code instructions to select the dynamic power rating for the power source based on a measurement of the adjustable setting voltage indicating an operating condition of the power adaptor or based on an indication of an operating condition the operably connected host information handling system, wherein the dynamic power rating is one of a plurality of dynamic power ratings in including an adjustable range of power levels at each dynamic power rating at which the power source is capable of operating.Type: ApplicationFiled: January 15, 2019Publication date: July 16, 2020Applicant: Dell Products, LPInventors: Wei-Cheng Yu, Tsung-Cheng Liao, Tun-Chieh Liang, Wen-Yung Chang, Chi-Che Wu
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Patent number: 10531530Abstract: Systems and methods for controlling a power adaptor Light-Emitting Diode (LED) indicator are described. In some embodiments, a method may include: detecting a coupling of a power adaptor to a voltage source; setting a plurality of transistors in a first configuration, where the first configuration provides power an LED coupled to the power adaptor via a cable; detecting a de-coupling of the power adaptor from the voltage source; and setting the plurality of transistors in a second configuration, where the second configuration ceases to provide power to the LED.Type: GrantFiled: October 3, 2017Date of Patent: January 7, 2020Assignee: Dell Products, L.P.Inventors: Wei-Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Wen-Yung Chang
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Patent number: 10491014Abstract: A computer-implemented method extends the time until the battery reaches an over-discharged state of an information handling system during storage. The method comprises determining if a first battery parameter is outside an associated first battery parameter specification. When the first battery parameter is outside the associated first battery parameter specification, a power management controller isolates the battery by turning off a charge/discharge field effect transistor. The method also includes determining if the first battery parameter is outside an associated second battery parameter specification. In response to the first battery parameter being outside the associated second battery parameter specification, the power management controller is triggered to enter a minimum power state to further reduce power consumption from the battery.Type: GrantFiled: July 15, 2014Date of Patent: November 26, 2019Assignee: Dell Products, L.P.Inventors: Chia-Fa Chang, Wen-Yung Chang, Tun-Chieh Liang, Richard C. Thompson
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Publication number: 20190104586Abstract: Systems and methods for controlling a power adaptor Light-Emitting Diode (LED) indicator are described. In some embodiments, a method may include: detecting a coupling of a power adaptor to a voltage source; setting a plurality of transistors in a first configuration, where the first configuration provides power an LED coupled to the power adaptor via a cable; detecting a de-coupling of the power adaptor from the voltage source; and setting the plurality of transistors in a second configuration, where the second configuration ceases to provide power to the LED.Type: ApplicationFiled: October 3, 2017Publication date: April 4, 2019Applicant: Dell Products, L.P.Inventors: Wei-Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Wen-Yung Chang
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Patent number: 9979300Abstract: Systems and methods for enhancing peak power capability and hold-up time in a resonant converter having a LLC topology may include a couple choke transformer circuit that may control an inductance of the couple choke transformer circuit and improve power efficiency of the resonant converter. The resonant converter may also include a resonant tank circuit that may provide improved peak power delivery of the resonant converter. The resonant converter may further include a resonant tank control circuit to control the resonant tank circuit and may increase the peak gain of the resonant converter, increase a voltage range of the input voltage, and extend a hold-up time of the input voltage when an AC power failure occurs.Type: GrantFiled: January 27, 2017Date of Patent: May 22, 2018Assignee: Dell Products L.P.Inventors: Merle Wood, Wei-Cheng Yu, Tun-Chieh Liang, Tsung-Cheng Liao, Wen-Yung Chang
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Publication number: 20180117857Abstract: An integrally-formed nonwoven object manufacturing method includes a raw material mixing step, a roller mixing step, a plastic sheet forming step, a foaming step, an embossing step, and a post-process step to manufacture a nonwoven object from TPU material such that the manufacturing process dispenses with a solvent to thereby effectuate environmental protection and reduce processing steps.Type: ApplicationFiled: November 1, 2016Publication date: May 3, 2018Inventors: Feng-Jung Chuang, Wen-Yung Chang
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Patent number: 9843265Abstract: A zero voltage switching method for a flyback converter featuring a transformer with first and second primary windings and corresponding turns ratios, N1 and N2, includes rectifying and filtering an AC signal to produce a primary DC voltage. A voltage level signal indicating whether the primary DC voltage falls within a particular voltage range is generated. The voltage level signal is used to select a particular primary winding from either the first primary winding or the second primary winding. A PWM controller corresponding to the particular primary winding is activated and an output of the particular PWM controller performs zero voltage switching of a gate terminal of the applicable main switching transistor. A duty cycle of the main switching transistor is maintained within a range of approximately 50% to approximately 60% in accordance with the turns ratio and the primary DC voltage to achieve a desired output voltage.Type: GrantFiled: December 17, 2015Date of Patent: December 12, 2017Assignee: Dell Products L.P.Inventors: Wei Cheng Yu, Tsung-Cheng Liao, Wen-Yung Chang, Merle Jackson Wood, III, Tun-Chieh Liang