Patents by Inventor Je-kook Kim
Je-kook Kim 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: 11862964Abstract: A circuit to protect an overvoltage in a universal serial bus (USB) device include an overvoltage protection (OVP) switch connected to a pin of a USB receptacle and a switch controller to turn off the OVP switch when an overvoltage is detected such that power between the pin and the USB device is interrupted. The switch controller supplies a control signal to the OVP switch such that the OVP switch has a first on-resistance when the USB device is operating in a normal mode and no overvoltage is detected, and has a second on-resistance, higher than the first on-resistance, when the USB device is operating in a low-power mode and no overvoltage is detected.Type: GrantFiled: March 29, 2022Date of Patent: January 2, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Je-kook Kim
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Patent number: 11749954Abstract: A semiconductor device for determining whether a foreign substance (e.g., water) is present and a method of operating the same are provided. The semiconductor device includes a receptacle including a plurality of pins according to a USB type-C receptacle interface; a first current source providing first current to a CC1 signal pin or a CC2 signal pin among the plurality of pins in a first operation mode; a second current source providing second current to the CC1 signal pin or the CC2 signal pin in a second operation mode; a third current source providing third current to at least two pins of other pins excluding the CC1 signal pin and the CC2 signal pin; and a power delivery integrated circuit (PDIC) controlling the first current source, the second current source and the third current source and detecting the voltage level of a signal outputted to the plurality of pins.Type: GrantFiled: November 4, 2021Date of Patent: September 5, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Je Kook Kim
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Publication number: 20230140330Abstract: An angle measurement system using a magnet and provided with first and second tracks includes an absolute angle calculation unit configured to calculate an absolute angle of a position of the magnet by using a 1-1th digital signal obtained by measuring a magnetic field signal of the first track and converted into a digital signal, a 1-2th digital signal obtained by measuring the magnetic field signal of the first track and converted into a digital signal, a 2-1th digital signal obtained by measuring a magnetic field signal of the second track and converted into a digital signal, and a 2-2th digital signal obtained by measuring the magnetic field signal of the second track and converted into a digital signal.Type: ApplicationFiled: October 17, 2022Publication date: May 4, 2023Inventors: Je Kook KIM, Kyoung Soo KWON, Chae Dong GO, Suk Jung LEE
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Patent number: 11573275Abstract: A device for detecting a leakage current generation condition in a universal serial bus (USB) interface including at least one pull-up circuit connected to the at least one power pin, and a port controller configured to detect at least one impedance between a ground pin and at least one power pin, detect a leakage current generation condition in the at least one power pin based on the at least one impedance detected, and activate a detection signal in response to the leakage current generation condition being detected, the port controller configured to detect the at least one impedance by controlling the at least one pull-up circuit to pull up the at least one power pin and detecting a voltage of the at least one power pin may be provided.Type: GrantFiled: December 7, 2020Date of Patent: February 7, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-hye Ko, Je-kook Kim
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Publication number: 20220263278Abstract: A method of ensuring power delivery in a universal serial bus (USB) interface between a device and a counterpart device, the device including a port controller and a USB receptacle. The method includes the port controller attempting to detect an abnormal state in which a leakage current occurs in the USB receptacle using at least one pin of the USB receptacle; and when the abnormal state is detected, the port controller turning OFF a switch connected between a power pin of the USB receptacle and an internal circuit of the device, and determining to enter an unattached state of being separated from the counterpart device.Type: ApplicationFiled: May 9, 2022Publication date: August 18, 2022Inventor: JE-KOOK KIM
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Publication number: 20220224107Abstract: A circuit to protect an overvoltage in a universal serial bus (USB) device include an overvoltage protection (OVP) switch connected to a pin of a USB receptacle and a switch controller to turn off the OVP switch when an overvoltage is detected such that power between the pin and the USB device is interrupted. The switch controller supplies a control signal to the OVP switch such that the OVP switch has a first on-resistance when the USB device is operating in a normal mode and no overvoltage is detected, and has a second on-resistance, higher than the first on-resistance, when the USB device is operating in a low-power mode and no overvoltage is detected.Type: ApplicationFiled: March 29, 2022Publication date: July 14, 2022Inventor: Je-kook KIM
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Patent number: 11329438Abstract: A method of ensuring power delivery in a universal serial bus (USB) interface between a device and a counterpart device, the device including a port controller and a USB receptacle. The method includes the port controller attempting to detect an abnormal state in which a leakage current occurs in the USB receptacle using at least one pin of the USB receptacle; and when the abnormal state is detected, the port controller turning OFF a switch connected between a power pin of the USB receptacle and an internal circuit of the device, and determining to enter an unattached state of being separated from the counterpart device.Type: GrantFiled: March 26, 2019Date of Patent: May 10, 2022Assignee: Samsung Electronics Co., Ltd.Inventor: Je-Kook Kim
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Patent number: 11296494Abstract: A circuit to protect an overvoltage in a universal serial bus (USB) device include an overvoltage protection (OVP) switch connected to a pin of a USB receptacle and a switch controller to turn off the OVP switch when an overvoltage is detected such that power between the pin and the USB device is interrupted. The switch controller supplies a control signal to the OVP switch such that the OVP switch has a first on-resistance when the USB device is operating in a normal mode and no overvoltage is detected, and has a second on-resistance, higher than the first on-resistance, when the USB device is operating in a low-power mode and no overvoltage is detected.Type: GrantFiled: January 29, 2019Date of Patent: April 5, 2022Assignee: Samsung Electronics Co., Ltd.Inventor: Je-kook Kim
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Publication number: 20220059978Abstract: A semiconductor device for determining whether a foreign substance (e.g., water) is present and a method of operating the same are provided. The semiconductor device includes a receptacle including a plurality of pins according to a USB type-C receptacle interface; a first current source providing first current to a CC1 signal pin or a CC2 signal pin among the plurality of pins in a first operation mode; a second current source providing second current to the CC1 signal pin or the CC2 signal pin in a second operation mode; a third current source providing third current to at least two pins of other pins excluding the CC1 signal pin and the CC2 signal pin; and a power delivery integrated circuit (PDIC) controlling the first current source, the second current source and the third current source and detecting the voltage level of a signal outputted to the plurality of pins.Type: ApplicationFiled: November 4, 2021Publication date: February 24, 2022Applicant: Samsung Electronics Co., Ltd.Inventor: Je Kook KIM
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Patent number: 11215653Abstract: An electronic device including a connector having a plurality of pins, and a detection circuit having at least one of a pull-up circuit and a pull-down circuit, and a connection circuit between a first pin and a second pin of the plurality of pins, the detection circuit is configured to select the first pin and the second pin, measure an impedance between the selected first pin and second pin by controlling a connection of the connection circuit and the at least one of the pull-up circuit and the pull-down circuit, and generate a detection signal indicating a presence or an absence of a foreign object on the connector based on the measured impedance.Type: GrantFiled: August 28, 2020Date of Patent: January 4, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Je-kook Kim
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Patent number: 11196221Abstract: A semiconductor device for determining whether a foreign substance (e.g., water) is present and a method of operating the same are provided. The semiconductor device includes a receptacle including a plurality of pins according to a USB type-C receptacle interface; a first current source providing first current to a CC1 signal pin or a CC2 signal pin among the plurality of pins in a first operation mode; a second current source providing second current to the CC1 signal pin or the CC2 signal pin in a second operation mode; a third current source providing third current to at least two pins of other pins excluding the CC1 signal pin and the CC2 signal pin; and a power delivery integrated circuit (PDIC) controlling the first current source, the second current source and the third current source and detecting the voltage level of a signal outputted to the plurality of pins.Type: GrantFiled: June 15, 2020Date of Patent: December 7, 2021Assignee: Samsung Electronics Co., Ltd.Inventor: Je Kook Kim
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Patent number: 11041821Abstract: An electronic device and a method for sensing moisture in an electronic device are provided. The method for sensing moisture in an electronic device includes sensing moisture introduced into a connector of the electronic device in a state where one or more functions executable by connection of the connector with an external electronic device are activated. Further, the method includes deactivating the one or more functions based on the sensing; determining whether the introduced moisture is removed in a state where the one or more functions are deactivated; and activating the one or more functions if the moisture is removed.Type: GrantFiled: March 28, 2018Date of Patent: June 22, 2021Inventors: Kyoung-Won Kim, Sung-Eun Lee, Jae-Hyun Ahn, Je-Kook Kim, Joon-Yung Park, Kyung-Won Park, Jong-Ik Won, In-Geol Lee, Yu-Dong Bae, Dong-Rak Shin, Kang-Jun Ko, Kyoung-Hoon Kim, Min-Gi Kim, Sang-Il Park, Jeong-Hun Seo
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Publication number: 20210088599Abstract: A device for detecting a leakage current generation condition in a universal serial bus (USB) interface including at least one pull-up circuit connected to the at least one power pin, and a port controller configured to detect at least one impedance between a ground pin and at least one power pin, detect a leakage current generation condition in the at least one power pin based on the at least one impedance detected, and activate a detection signal in response to the leakage current generation condition being detected, the port controller configured to detect the at least one impedance by controlling the at least one pull-up circuit to pull up the at least one power pin and detecting a voltage of the at least one power pin may be provided.Type: ApplicationFiled: December 7, 2020Publication date: March 25, 2021Applicant: Samsung Electronics Co., Ltd.Inventors: Eun-hye KO, Je-kook KIM
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Patent number: 10928343Abstract: An electronic device includes a connector connected to a cable external to the electronic device and including a plurality of pins; a first water detection circuit connected to at least one first pin of the plurality of pins and generating a first detection result by detecting whether there is water in the connector based on resistance of the at least one first pin; and a second water detection circuit connected to at least one second pin of the plurality of pins, entering a water detection mode when the first detection result indicates the presence of water, and detecting whether there is water in the connector based on resistance of the at least one second pin.Type: GrantFiled: May 16, 2018Date of Patent: February 23, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Se-jong Park, Hyeon-je Choe, Je-kook Kim, Ji-yong Kim, Tae-jeong Kim, Jun-han Bae, Hyoung-seok Oh, Jong-haeng Lee
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Publication number: 20200393502Abstract: An electronic device including a connector having a plurality of pins, and a detection circuit having at least one of a pull-up circuit and a pull-down circuit, and a connection circuit between a first pin and a second pin of the plurality of pins, the detection circuit is configured to select the first pin and the second pin, measure an impedance between the selected first pin and second pin by controlling a connection of the connection circuit and the at least one of the pull-up circuit and the pull-down circuit, and generate a detection signal indicating a presence or an absence of a foreign object on the connector based on the measured impedance.Type: ApplicationFiled: August 28, 2020Publication date: December 17, 2020Applicant: Samsung Electronics Co., Ltd.Inventor: Je-kook KIM
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Patent number: 10859640Abstract: A device for detecting a leakage current generation condition in a universal serial bus (USB) interface including at least one pull-up circuit connected to the at least one power pin, and a port controller configured to detect at least one impedance between a ground pin and at least one power pin, detect a leakage current generation condition in the at least one power pin based on the at least one impedance detected, and activate a detection signal in response to the leakage current generation condition being detected, the port controller configured to detect the at least one impedance by controlling the at least one pull-up circuit to pull up the at least one power pin and detecting a voltage of the at least one power pin may be provided.Type: GrantFiled: July 2, 2018Date of Patent: December 8, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-hye Ko, Je-kook Kim
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Patent number: 10862246Abstract: Provided are a foreign substance detecting circuit, an electronic device including the foreign substance detecting circuit, and a method of detecting foreign substance. The electronic device includes a connector connected to an external cable and including a plurality of pins, a foreign substance detecting circuit configured to, when the cable is connected to the connector, detect a resistance from a first pin that is set to be in an open state or to be connected to a pull-down resistor from among the plurality of pins in a state where the cable is connected, and determine whether there is a foreign substance in the connector, and an application processor configured to control operations in the electronic device for performing a post-process when there is the foreign substance in the connector, according to a detection result from the foreign substance detecting circuit.Type: GrantFiled: November 19, 2018Date of Patent: December 8, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-han Bae, Je-kook Kim, Hyoung-seok Oh, Sang-beom Kim, Se-jong Park, You-so Cheon
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Patent number: 10837934Abstract: A water detection circuit includes a voltage detector electrically connected to at least one first pin of a connector and configured to detect a first voltage level from the at least one first pin at a first point in time and a second voltage level from the at least one first pin at a second point in time, a detection logic configured to compare the first voltage level with a first threshold and compare the second voltage level with a second threshold and a power controller configured to block current from being supplied to the at least first pin before the second point in time, after the first water detection operation is completed, wherein the detection logic determines that water is present in the connector when water is detected in at least one of a first water detection operation and a second water detection operation.Type: GrantFiled: March 14, 2019Date of Patent: November 17, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Se-jong Park, Je-kook Kim, Hyeon-je Choe
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Patent number: 10802574Abstract: A semiconductor device is provided. The semiconductor device includes a receptacle which comprises a plurality of pins according to a universal serial bus (USB) type-C receptacle interface and a power delivery integrated circuit (PD IC) which transmits a toggle voltage signal that toggles between a first voltage level and a second voltage level to a first pin among the pins and detects a voltage level of a signal output from the first pin.Type: GrantFiled: January 13, 2020Date of Patent: October 13, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Je Kook Kim, Sung Ha Park
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Publication number: 20200313367Abstract: A semiconductor device for determining whether a foreign substance (e.g., water) is present and a method of operating the same are provided. The semiconductor device includes a receptacle including a plurality of pins according to a USB type-C receptacle interface; a first current source providing first current to a CC1 signal pin or a CC2 signal pin among the plurality of pins in a first operation mode; a second current source providing second current to the CC1 signal pin or the CC2 signal pin in a second operation mode; a third current source providing third current to at least two pins of other pins excluding the CC1 signal pin and the CC2 signal pin; and a power delivery integrated circuit (PDIC) controlling the first current source, the second current source and the third current source and detecting the voltage level of a signal outputted to the plurality of pins.Type: ApplicationFiled: June 15, 2020Publication date: October 1, 2020Applicant: Samsung Electronics Co., Ltd.Inventor: Je Kook KIM