Patents by Inventor Chan Young Jeong
Chan Young Jeong 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: 20250027766Abstract: The present disclosure proposes an apparatus for determining a first three-dimensional shape of an object. The apparatus includes one or more first light sources configured to irradiate one or more first pattern lights to the object, a second light source configured to sequentially irradiate one or more second pattern lights having one phase range, a beam splitter and one or more lenses configured to change optical paths of the one or more second pattern lights, an image sensor configured to capture one or more first reflected lights and one or more second reflected lights, and a processor configured to determine the first three-dimensional shape of the object based on the one or more first reflected lights and the one or more second reflected lights.Type: ApplicationFiled: October 9, 2024Publication date: January 23, 2025Applicant: KOH YOUNG TECHNOLOGY INC.Inventors: Chan Kwon LEE, Moon Young JEON, Deok Hwa HONG, Joong Ki JEONG
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Publication number: 20240429754Abstract: Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.Type: ApplicationFiled: August 30, 2024Publication date: December 26, 2024Applicant: Renesas Electronics America Inc.Inventors: Chan Young Jeong, Tao Qi, Young Chul Ryu, Kwangmuk Choi, Pooja Agrawal, Krishal Jaswantsinh Solanki, Adnan Dzebic
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Publication number: 20240396116Abstract: A battery array includes a first heat sink having a plate shape; a battery cell unit mounted on a top surface of the first heat sink; a first column coupled to the top surface of the first heat sink and extending in the vertical direction; a second heat sink having a plate shape, located above the first column, and including a bottom surface coupled to the first column; and a reinforcing member located between the second heat sink and the battery cell unit and configured to support the bottom surface of the second heat sink. The battery array has a structure in which a plurality of battery array units is stacked in a vertical direction.Type: ApplicationFiled: March 22, 2024Publication date: November 28, 2024Applicant: LG Energy Solution, Ltd.Inventors: Chan-Young Jeong, In-Jae Gang, Jeong-Won Lee, Sang-Hyun Jo, Young-Bum Cho
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Publication number: 20240339848Abstract: Systems and methods for wireless power transfer systems are described. A controller of a device can detect an overvoltage condition associated with direct current (DC) power being outputted by a rectifier. The controller can, in response to detection of the overvoltage condition, the controller can control a phase of a current of alternating current (AC) power being received by the rectifier to cause the current and a voltage of the AC power to be out of phase.Type: ApplicationFiled: April 10, 2023Publication date: October 10, 2024Applicant: Renesas Electronics America Inc.Inventors: Hulong ZENG, Eric Tong Lin HUANG, Chan Young JEONG
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Patent number: 12100972Abstract: Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.Type: GrantFiled: August 9, 2022Date of Patent: September 24, 2024Assignee: Renesas Electronics America Inc.Inventors: Chan Young Jeong, Tao Qi, Young Chul Ryu, Kwangmuk Choi, Pooja Agrawal, Krishal Jaswantsinh Solanki, Adnan Dzebic
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Patent number: 11909220Abstract: A wireless power device is presented that avoids transmit conflicts. The device can include a rectifier circuit coupled to a coil; a transmit driver coupled to the rectifier circuit; a transmit detect circuit configured to detect receipt of transmitted wireless power at the coil; and a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving a signal from the transmit detect circuit and providing an alert of the presence of the transmitted wireless power, the controller activating the transmit driver to transmit wireless power in absence of the signal. The wireless device can determine an operating mode and in a transmit mode determine presence of a received power. If received power is detected an alert can be provided and an off state initiated. If transmit power is not detected the transmit driver can be activated.Type: GrantFiled: December 10, 2019Date of Patent: February 20, 2024Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Smith, Chan Young Jeong, Detelin Martchovsky, Ashley DeWolfe, Damla Acar
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Publication number: 20230146600Abstract: Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.Type: ApplicationFiled: August 9, 2022Publication date: May 11, 2023Applicant: Renesas Electronics America Inc.Inventors: Chan Young Jeong, Tao Qi, Young Chul Ryu, Kwangmuk Choi, Pooja Agrawal, Krishal Jaswantsinh Solanki, Adnan Dzebic
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Patent number: 11394251Abstract: A method of over-current protection in a wireless power receiver operating in a high-power mode includes digitally receiving an output current signal, generating an OC INT signal if the output current signal is greater than a current limit value, and if the OC INT signal is generated, transmitting Count A number of End Power Transfer (EPT) packets. If wireless power transmission has not stopped, transmitting Count C number of Control Error Packets (CEPs) with Value B. If wireless power transmission has not reduced such that the output current IL is below the current limit value, then enabling an LDO current limit circuit in a power block of the wireless power receiver. In a low-power mode, the receiver enables a hardware over-current circuit that generates an OC INT signal when the output current exceeds a current limit.Type: GrantFiled: October 19, 2020Date of Patent: July 19, 2022Assignee: Renesas Electronics America Inc.Inventors: Pooja Agrawal, Adnan Dzebic, Tao Qi, Steve Jaycox, Chan Young Jeong
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Patent number: 11374441Abstract: In accordance with some embodiments of the present invention, a method of controlling and correcting negative modulation is presented. In some embodiments, a method of operating a receiver includes detecting a negative modulation and adjusting one or more parameters to force a transition to a positive modulation. The parameters can be the output voltage Vout, the transmitter input voltage Vin, or receiver structural elements.Type: GrantFiled: March 28, 2019Date of Patent: June 28, 2022Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Wayne Smith, Chan Young Jeong
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Patent number: 11050305Abstract: Embodiments herein provide a device for calibrating a voltage driven by a PWM signal for a circuit board. The device includes a controller configured to generate the PWM signal according to a PWM duty cycle value, and a voltage regulator configured to generate an output voltage according to the PWM signal. The controller is further configured to calibrate a relationship between the PWM duty cycle value and the output voltage based on a plurality of configured PWM duty cycle values and a plurality of corresponding voltages measured from the voltage regulator, and drive the circuit board by configuring the PWM duty cycle value based on the calibrated relationship.Type: GrantFiled: April 8, 2019Date of Patent: June 29, 2021Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Smith, Chan Young Jeong
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Publication number: 20210175745Abstract: A wireless power device is presented that avoids transmit conflicts. The device can include a rectifier circuit coupled to a coil; a transmit driver coupled to the rectifier circuit; a transmit detect circuit configured to detect receipt of transmitted wireless power at the coil; and a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving a signal from the transmit detect circuit and providing an alert of the presence of the transmitted wireless power, the controller activating the transmit driver to transmit wireless power in absence of the signal. The wireless device can determine an operating mode and in a transmit mode determine presence of a received power. If received power is detected an alert can be provided and an off state initiated. If transmit power is not detected the transmit driver can be activated.Type: ApplicationFiled: December 10, 2019Publication date: June 10, 2021Inventors: Nicholaus Smith, Chan Young Jeong, Detelin Martchovsky, Ashley DeWolfe, Damla Acar
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Publication number: 20210143688Abstract: A method of over-current protection in a wireless power receiver operating in a high-power mode includes digitally receiving an output current signal, generating an OC INT signal if the output current signal is greater than a current limit value, and if the OC INT signal is generated, transmitting Count A number of End Power Transfer (EPT) packets. If wireless power transmission has not stopped, transmitting Count C number of Control Error Packets (CEPs) with Value B. If wireless power transmission has not reduced such that the output current IL is below the current limit value, then enabling an LDO current limit circuit in a power block of the wireless power receiver. In a low-power mode, the receiver enables a hardware over-current circuit that generates an OC INT signal when the output current exceeds a current limit.Type: ApplicationFiled: October 19, 2020Publication date: May 13, 2021Inventors: Pooja Agrawal, Adnan Dzebic, Tao Qi, Steve Jaycox, Chan Young Jeong
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Patent number: 11005306Abstract: Embodiments described herein provide a wireless power transmitter that dynamically adjusts the deadtime to reduce power loss. Specifically, the wireless power transmitter includes a transistor circuit for switching a first voltage at a first node and a second voltage at a second node, and a LC circuit coupled between the first node and the second node. The wireless power transmitter further includes a controller coupled to the transistor circuit. The controller is configured to determine whether either of the first voltage and the second voltage is negative during a deadtime of switching. The controller is configured to increment or decrement the deadtime by an adjustment amount depending on whether negative voltage is detected.Type: GrantFiled: March 28, 2019Date of Patent: May 11, 2021Assignee: Integrated Device Technology, Inc.Inventors: Tao Qi, Gustavo Mehas, Chan Young Jeong, Xinyun Gu, Nicholaus Smith, Amit D. Bavisi, Daryl Sugasawara, Aihua Lee
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Patent number: 10938255Abstract: A capacitor sensor array (or grid) over a wireless power transmission coil can include a first set of lines; a second set of lines intersecting the first set of lines; a first multiplexer coupled to provide a charge (e.g. in the form of a DC voltage) from a voltage source to the first set of lines and provide first signals to detect voltages on each line; and a second multiplexer coupled to provide a charge from the voltage source to the second set of lines and provide second signals to detect voltages on each line, wherein an object positioned with respect to the first set of lines and the second set of lines is located. According to some embodiments, a wireless power receive coil and a rectifier circuit can be used in forming a capacitor sensor, to sense the capacitance between the receive and transmit coils for better alignment between the two coils. Other embodiments are also provided.Type: GrantFiled: March 28, 2019Date of Patent: March 2, 2021Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.Inventors: Nicholaus Smith, Rui Liu, Tao Qi, Amit D. Bavisi, Chan Young Jeong
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Patent number: 10840741Abstract: A wireless power circuit is presented that includes a transmit coil coupled to a first node; a receive coil coupled to the first node; a switch circuit coupled to the transmit coil and the receive coil opposite the first node, the switch switching the transmit coil to a second node in a transmit mode and switching the receive coil to the second node in a receive mode; a controller coupled to the first node and the second node, the controller coupled to provide signals to the switch circuit; and a self-start circuit coupled to the receive coil (or Tx coil) that automatically selects one of the coils to be used, the self-start circuit providing power to the switch circuit to hold the switch circuit in the receive mode (or predefined coil to be selected by default).Type: GrantFiled: March 29, 2019Date of Patent: November 17, 2020Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Wayne Smith, Tao Qi, Jiangjian Huang, Chan Young Jeong, Gustavo James Mehas
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Patent number: 10784044Abstract: In accordance with embodiments of the present invention, a coil design for the transmission of wireless power. In some embodiments, the coil can include a winding with one or more turns of conductive traces mounted on a substrate, wherein the one or more turns include characteristics that enhance operation of the coil. In some embodiments, the winding includes a transmit coil and a receive coil, each coupled to terminals that provide for a transmit functionality and a receive functionality. In some embodiments, the traces are varied in width and/or thickness in order to optimize the inductance and the coil resistance. In some embodiments, parameters of a control circuit coupled to the coil to affect a transmit functionality or a receive functionality can be optimized.Type: GrantFiled: April 5, 2019Date of Patent: September 22, 2020Assignee: Integrated Device Technology, Inc.Inventors: Tao Qi, Gustavo Mehas, Chan Young Jeong, Xinyun Gu, Nicholaus Wayne Smith, Amit D. Bavisi, Daryl Jay Sugasawara, Aihua Lee, Tianze Kan
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Publication number: 20200212729Abstract: A capacitor sensor array (or grid) over a wireless power transmission coil can include a first set of lines; a second set of lines intersecting the first set of lines; a first multiplexer coupled to provide a charge (e.g. in the form of a DC voltage) from a voltage source to the first set of lines and provide first signals to detect voltages on each line; and a second multiplexer coupled to provide a charge from the voltage source to the second set of lines and provide second signals to detect voltages on each line, wherein an object positioned with respect to the first set of lines and the second set of lines is located. According to some embodiments, a wireless power receive coil and a rectifier circuit can be used in forming a capacitor sensor, to sense the capacitance between the receive and transmit coils for better alignment between the two coils. Other embodiments are also provided.Type: ApplicationFiled: March 28, 2019Publication date: July 2, 2020Inventors: Nicholaus SMITH, Rui LIU, Tao QI, Amit D. BAVISI, Chan Young JEONG
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Publication number: 20200204007Abstract: Embodiments described herein provide a wireless power transmitter that dynamically adjusts the deadtime to reduce power loss. Specifically, the wireless power transmitter includes a transistor circuit for switching a first voltage at a first node and a second voltage at a second node, and a LC circuit coupled between the first node and the second node. The wireless power transmitter further includes a controller coupled to the transistor circuit. The controller is configured to determine whether either of the first voltage and the second voltage is negative during a deadtime of switching. The controller is configured to increment or decrement the deadtime by an adjustment amount depending on whether negative voltage is detected.Type: ApplicationFiled: March 28, 2019Publication date: June 25, 2020Inventors: Tao QI, Gustavo MEHAS, Chan Young JEONG, Xinyun GU, Nicholaus SMITH, Amit D. BAVISI, Daryl SUGASAWARA, Aihua LEE
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Publication number: 20200204011Abstract: Embodiments herein provide a device for calibrating a voltage driven by a PWM signal for a circuit board. The device includes a controller configured to generate the PWM signal according to a PWM duty cycle value, and a voltage regulator configured to generate an output voltage according to the PWM signal. The controller is further configured to calibrate a relationship between the PWM duty cycle value and the output voltage based on a plurality of configured PWM duty cycle values and a plurality of corresponding voltages measured from the voltage regulator, and drive the circuit board by configuring the PWM duty cycle value based on the calibrated relationship.Type: ApplicationFiled: April 8, 2019Publication date: June 25, 2020Inventors: Nicholaus SMITH, Chan Young JEONG
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Publication number: 20190386525Abstract: In accordance with some embodiments of the present invention, a method of controlling and correcting negative modulation is presented. In some embodiments, a method of operating a receiver includes detecting a negative modulation and adjusting one or more parameters to force a transition to a positive modulation. The parameters can be the output voltage Vout, the transmitter input voltage Vin, or receiver structural elements.Type: ApplicationFiled: March 28, 2019Publication date: December 19, 2019Inventors: Nicholaus Wayne SMITH, Chan Young JEONG