Patents by Inventor Keng Chen
Keng Chen 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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Publication number: 20240154526Abstract: A device comprises a first comparator to generate a first clock signal based on a reference voltage and a first voltage at an output of a switched-capacitor power converter (SCPC), and a second comparator to generate a first control signal based on the first voltage and a threshold voltage. A sensor is to generate a second control signal based on one of a level of a current of the first clock signal, or a duty cycle of the first clock signal. A frequency divider circuit is to generate a second clock signal based on the first control signal and the second control signal, and in some embodiments, further based on one of the first clock signal or a third clock signal. Controller circuitry is to operate switch circuitry of the SCPC based on the first clock signal.Type: ApplicationFiled: November 9, 2022Publication date: May 9, 2024Applicant: Intel CorporationInventors: Keng Chen, Huanhuan Zhang, Arvind Raghavan, Tamir Salus, Christopher Schaef, Gayathri Devi Sridharan
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Patent number: 11967363Abstract: A display controller includes a first chip and a second chip. The first chip is configured to control a display device. The second chip is externally coupled to the first chip, and configured to be a random access memory and. The first chip is further configured to provide a first supply power to the second chip and to access the second chip during the controlling of the display device.Type: GrantFiled: September 28, 2021Date of Patent: April 23, 2024Assignee: AP MEMORY TECHNOLOGY CORPORATIONInventors: Wenliang Chen, Girish Nanjappa, Lin Ma, Hung-Piao Ma, Keng Lone Wong, Chun Yi Lin
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Publication number: 20240113429Abstract: An electronic device including a bracket and an antenna is provided. The bracket includes first, second, third, and fourth surfaces. The antenna includes a radiator. The radiator includes first, second, third, and fourth portions. The first portion is located on the first surface and includes connected first and second sections. The second portion is located on the second surface and includes third, fourth, fifth, and sixth sections. The third section, the fourth section, and the fifth sections are bent and connected to form a U shape. The third portion is located on the third surface and is connected to the second section and the fourth section. The fourth portion is located on the fourth surface and is connected to the fifth section, the sixth section, and the third portion. The radiator is adapted to resonate at a low frequency band and a first high frequency band.Type: ApplicationFiled: August 16, 2023Publication date: April 4, 2024Applicant: PEGATRON CORPORATIONInventors: Chien-Yi Wu, Chao-Hsu Wu, Sheng-Chin Hsu, Chia-Hung Chen, Chih-Wei Liao, Hau Yuen Tan, Hao-Hsiang Yang, Shih-Keng Huang
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Publication number: 20240112727Abstract: An interface of a memory circuit includes a chip enable terminal, at least one data terminal, and a data strobe terminal. The chip enable terminal receives a chip enable signal that varies between a first high voltage and a low voltage. The at least one data terminal receives a first data signal that varies between a second high voltage and the low voltage during a command phase, and transmits or receives a second data signal during a data phase. The data strobe terminal receives a first data strobe signal that periodically varies between the second high voltage and the low voltage during the command phase, and transmits or receives a second data strobe signal that swings periodically during the data phase. During a transition interval between the command phase and the data phase, the data strobe terminal stops receiving or transmitting data strobe signals that swing periodically.Type: ApplicationFiled: December 11, 2023Publication date: April 4, 2024Inventors: WENLIANG CHEN, GIRISH NANJAPPA, LIN MA, HUNG-PIAO MA, KENG LONE WONG, CHUN YI LIN
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Publication number: 20230356549Abstract: A sensor device includes a plurality of wires that are adapted to be disposed on an object, a control circuit that is electrically coupled to the wires, and a conductive member that is electrically coupled to the control circuit. Each of the wires has a detection section. The conductive member is operable to contact the detection sections of the wires. The detection sections are urged to move relative to the conductive member when the object is deformed, so that a quantity of the detection sections in contact with the conductive member varies with deformation of the object. When the conductive member is in contact with the detection section of any one of the wires, the conductive member and the one of the wires cooperatively form one closed circuit. The control circuit is adapted to transmit data of a quantity of the closed circuit to an external device.Type: ApplicationFiled: May 2, 2023Publication date: November 9, 2023Applicants: Taiwan Green Point Enterprises Co., Ltd., Jabil Circuit (Singapore) Pte. Ltd.Inventors: Ching-Lung Mao, Chin-Feng Yang, Ming-Chung Chung, Huang-Keng Chen
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Patent number: 11804777Abstract: A power supply includes a storage component to store an output current value representative of a magnitude of output current supplied by an output voltage of a power converter to power a load. The power supply further includes an offset reference generator and a controller. The offset reference generator produces an offset reference signal, the output current value being offset by the offset reference signal. The controller controls generation of the output voltage of the power converter as a function of the offset output current value with respect to a threshold signal (value). Additionally, the controller is configured to detect a startup mode of a power converter operative to convert an input voltage into an output voltage. During the startup mode, the controller: i) produces a threshold signal having a magnitude that varies over time, and ii) controls operation of switches in the power converter as a function of the threshold signal while the power converter is operated in a diode emulation mode.Type: GrantFiled: October 8, 2021Date of Patent: October 31, 2023Assignee: Infineon Technologies Austria AGInventors: Keng Chen, James R. Garrett
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Patent number: 11723495Abstract: Systems, methods and apparatus for dispensing of paper products. A dispenser comprising a housing comprising a product holding area defined by a front, back and two sides, and a dispenser throat defining an opening through the housing; a motor coupled to the rolled product and configured to rotate the rolled product in first and second directions; and a feed mechanism having a first side opening and a second side opening different from the first side opening, wherein both the first side and second side openings are different from that dispenser throat, and wherein the first side opening is configured to accept the tail when the rolled product has a first orientation and is rotated in the first direction and the second side opening is configured to accept the tail when the rolled product has a second orientation and is rotated in the second direction.Type: GrantFiled: March 29, 2019Date of Patent: August 15, 2023Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Richard P. Lewis, I-Chung Hou, Wan-Chih Lin, Ming-Chung Chung, Chih-An Chen, Wan-Chang Liang, Chan-Hao Chen, Huang-Keng Chen, Ching-Lung Mao, Wei-Ming Huang
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Patent number: 11658569Abstract: A method of implementing a load line in a power converter includes: adjusting a target voltage used to regulate an output voltage of the power converter, based on sensed load current information that has delay between updates; and responsive to detecting a load current transient and before the next update to the sensed load current information becomes available, adjusting the target voltage based on blind load current information. A corresponding controller, power converter and electronic system are also described.Type: GrantFiled: June 8, 2020Date of Patent: May 23, 2023Inventors: Keng Chen, Charles Amirault, James Garret
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Publication number: 20230135237Abstract: A guidewire (10) is provided including a core wire (12), a resin layer (14) at least partially surrounding the core wire, and a coil wire (16) external to the resin layer. The resin layer extending over and along the core wire may comprise a series of windings, which may have a constant or variable pitch, or may comprise a sleeve. By applying a heat treatment to portions og the guidewire, the resin layer may be selectively melted to form a bond between the core wire and the coil wire. This technique may be used to provide the guidewire with a desired strength profile, without the need for tapering the ends of the core wire.Type: ApplicationFiled: April 16, 2021Publication date: May 4, 2023Inventors: Jianjiang Chen, Chang-Keng Chen
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Publication number: 20230114503Abstract: A power supply includes a storage component to store an output current value representative of a magnitude of output current supplied by an output voltage of a power converter to power a load. The power supply further includes an offset reference generator and a controller. The offset reference generator produces an offset reference signal, the output current value being offset by the offset reference signal. The controller controls generation of the output voltage of the power converter as a function of the offset output current value with respect to a threshold signal (value). Additionally, the controller is configured to detect a startup mode of a power converter operative to convert an input voltage into an output voltage. During the startup mode, the controller: i) produces a threshold signal having a magnitude that varies over time, and ii) controls operation of switches in the power converter as a function of the threshold signal while the power converter is operated in a diode emulation mode.Type: ApplicationFiled: October 8, 2021Publication date: April 13, 2023Inventors: Keng Chen, Min Chen, James R. Garrett, Danny Clavette, Charles P. Amirault
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Publication number: 20230113610Abstract: A power supply includes a storage component to store an output current value representative of a magnitude of output current supplied by an output voltage of a power converter to power a load. The power supply further includes an offset reference generator and a controller. The offset reference generator produces an offset reference signal, the output current value being offset by the offset reference signal. The controller controls generation of the output voltage of the power converter as a function of the offset output current value with respect to a threshold signal (value). Additionally, the controller is configured to detect a startup mode of a power converter operative to convert an input voltage into an output voltage. During the startup mode, the controller: i) produces a threshold signal having a magnitude that varies over time, and ii) controls operation of switches in the power converter as a function of the threshold signal while the power converter is operated in a diode emulation mode.Type: ApplicationFiled: October 8, 2021Publication date: April 13, 2023Inventors: Keng Chen, James R. Garrett
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Patent number: 11515787Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.Type: GrantFiled: March 17, 2020Date of Patent: November 29, 2022Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Publication number: 20220241321Abstract: Pharmaceutical compositions comprising a CpG oligonucleotide, a buffer agent, and one or more salts having a total salt concentration of about 80-130 mM. A majority population of the CpG oligonucleotides in the composition is in dimeric form. Also provided herein are uses of the pharmaceutical compositions for modulating immune responses in subjects in need of the treatment, for example, cancer patient.Type: ApplicationFiled: May 8, 2020Publication date: August 4, 2022Inventors: Yi-Chung CHANG, Shih-Chi YEH, Chih-Keng CHEN, Chien-Hao CHANG, Chu-Ying PENG
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Patent number: 11404961Abstract: A power converter includes a switch, an ON-time controller, and a compensator. Over multiple control cycles, the ON-time controller controls an ON-time duration of a control signal driving the switch. Activation of the switch generates an output voltage that powers a dynamic load. The ON-time controller controls attributes such as a switching frequency and/or an ON-time duration of the control signal driving the switch to regulate the output voltage. A phase-locked loop in the compensator supplies the ON-time controller with adjustment signals that adjust the ON-time duration of activating the switch to maintain the switching frequency at a desired setpoint. Thus, if a transient load condition causes the ON-time controller to temporarily operate the switch to at a value other than the desired setpoint frequency, the phase-locked loop of the compensator causes the switching frequency to align with the desired switching frequency again over one or more control cycles.Type: GrantFiled: May 27, 2020Date of Patent: August 2, 2022Assignee: Infineon Technologies Austria AGInventors: Keng Chen, James R. Garrett
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Patent number: 11392153Abstract: A power supply includes a voltage converter to produce an output voltage to power a load. The power supply further includes a reference voltage generator and a controller. The reference voltage generator is operative to generate a floor reference voltage that varies as a function of the output voltage depending on a setting of one or more adjustable (programmable) resistor-capacitor paths in the floor reference voltage generator. The controller produces control signals to control the voltage converter as a function of the floor reference voltage and the output voltage.Type: GrantFiled: February 6, 2020Date of Patent: July 19, 2022Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Publication number: 20220192439Abstract: Systems, methods and apparatus for dispensing of paper products. A dispenser comprising a housing comprising a product holding area defined by a front, back and two sides, and a dispenser throat defining an opening through the housing; a motor coupled to the rolled product and configured to rotate the rolled product in first and second directions; and a feed mechanism having a first side opening and a second side opening different from the first side opening, wherein both the first side and second side openings are different from that dispenser throat, and wherein the first side opening is configured to accept the tail when the rolled product has a first orientation and is rotated in the first direction and the second side opening is configured to accept the tail when the rolled product has a second orientation and is rotated in the second direction.Type: ApplicationFiled: March 29, 2019Publication date: June 23, 2022Inventors: Richard P. Lewis, I-Chung Hou, Wan-Chih Lin, Ming-Chung Chung, Chih-An Chen, Wan-Chang Liang, Chan-Hao Chen, Huang-Keng Chen, Ching-Lung Mao, Wei-Ming Huang
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Publication number: 20210384821Abstract: A method of implementing a load line in a power converter includes: adjusting a target voltage used to regulate an output voltage of the power converter, based on sensed load current information that has delay between updates; and responsive to detecting a load current transient and before the next update to the sensed load current information becomes available, adjusting the target voltage based on blind load current information. A corresponding controller, power converter and electronic system are also described.Type: ApplicationFiled: June 8, 2020Publication date: December 9, 2021Inventors: Keng Chen, Charles Amirault, James Garret
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Publication number: 20210376724Abstract: A power converter includes a switch, an ON-time controller, and a compensator. Over multiple control cycles, the ON-time controller controls an ON-time duration of a control signal driving the switch. Activation of the switch generates an output voltage that powers a dynamic load. The ON-time controller controls attributes such as a switching frequency and/or an ON-time duration of the control signal driving the switch to regulate the output voltage. A phase-locked loop in the compensator supplies the ON-time controller with adjustment signals that adjust the ON-time duration of activating the switch to maintain the switching frequency at a desired setpoint. Thus, if a transient load condition causes the ON-time controller to temporarily operate the switch to at a value other than the desired setpoint frequency, the phase-locked loop of the compensator causes the switching frequency to align with the desired switching frequency again over one or more control cycles.Type: ApplicationFiled: May 27, 2020Publication date: December 2, 2021Inventors: Keng Chen, James R. Garrett
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Patent number: 11177730Abstract: An apparatus such as a DC-DC power converter including a switch, an ON-time controller, and a compensator operates in a constant ON-time control mode. Over multiple control cycles, the ON-time controller controls an ON-time duration of activating the switch and generation of an output voltage to power a dynamic load. The compensator, in communication with the ON-time controller, adjusts the ON-time duration of activating the switch depending on a magnitude of output current delivered by the output voltage to the dynamic load. For example, during heavier load conditions when the dynamic load consumes a higher amount of current, and in which internal resistive losses of the power supply become more substantial, the compensator increases the ON-time duration of activating the switch, resulting in operation of the power supply and switch closer to a desired frequency setpoint.Type: GrantFiled: October 17, 2019Date of Patent: November 16, 2021Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Publication number: 20210247788Abstract: A power supply includes a voltage converter to produce an output voltage to power a load. The power supply further includes a reference voltage generator and a controller. The reference voltage generator is operative to generate a floor reference voltage that varies as a function of the output voltage depending on a setting of one or more adjustable (programable) resistor-capacitor paths in the floor reference voltage generator. The controller produces control signals to control the voltage converter as a function of the floor reference voltage and the output voltage.Type: ApplicationFiled: February 6, 2020Publication date: August 12, 2021Inventors: Keng Chen, Luca Petruzzi