1
Yeon Chul Choo: Power supply circuit and a voltage level adjusting circuit and method for a portable battery-powered electronic device. Samsung Electronics, Robert E Bushnell Esq, December 19, 2000: US06163086 (95 worldwide citation)

A power supply circuit for AC/DC adapter-powered or battery-powered portable electronic devices, which has a linear regulator, and includes a voltage level adjusting circuit coupled to the linear regulator. The voltage level adjusting circuit lowers a voltage supplied from the AC/DC adapter to a pre ...


2
Yeon Chul Choo: Apparatus and method for controlling power supply to a battery-powered electronic device. Samsung Electronics, Robert E Bushnell Esq, September 17, 2002: US06452362 (85 worldwide citation)

A battery-powered electronic device having a main battery and a second battery, and method for controlling power supply to a battery-powered electronic device, are described. If the two batteries are simultaneously mounted in the electronic device, the electronic device receives power from the batte ...


3
Jae Choeul Oh, Yeon Chul Choo: Battery-powered equipment automatically detecting battery types. Samsung Electronics, Robert E Bushnell Esq, December 15, 1998: US05850134 (31 worldwide citation)

Battery-powered equipment for detecting the type of battery installed therein, includes a plurality of types of batteries which can be installed in the battery-powered equipment. Each of the batteries has a positive power terminal, a negative power terminal, and first to third detection terminals. T ...


4
Yeon Chul Choo: Remaining battery capacity corrector and controlling method therefor. Samsung Electronics, Robert E Bushnell Esq, February 4, 2003: US06515452 (20 worldwide citation)

A remaining battery capacity corrector and a controlling method therefor are provided. The remaining battery capacity corrector corrects errors in a calculated remainingbattery capacity and includes a voltage detector for detecting an output voltage of a battery, a current detector for detecting an ...


5
Dong Gi Lee, Man Ho Seok, Seung Mok Song, Wan Kyu Lee, Jun Ho Lee, Yeon Chul Choo, Chang Ju Kim, Hyung Joon Moon, Chang Geun Shin, Sun Jae Yang, Ju Hyung Lee: Electronic control device for vehicle. HYUNDAI AUTRON, Mayer Brown, Hyunho Park, March 8, 2016: US09281607 (3 worldwide citation)

The present invention relates to an electronic control device which is an electronic control device such as an engine ECU for a vehicle and has a tight sealing structure between a case and a connector. The present invention provides an electronic control device for a vehicle, which implements a new ...


6
Sun Jae Yang, Dong Gi Lee, Seung Mok Song, Yeon Chul Choo: Electronic control apparatus for vehicle using coupling member and method for manufacturing the same. HYUNDAI AUTRON, Mayer Brown, Hyunho Park, November 29, 2016: US09510466

Disclosed is an electronic control apparatus for a vehicle, comprising: a printed circuit board (PCB) configured to electrically control each part of the vehicle and have both sides provided with at least one fixed hole; a connector cover includes a connector part electrically connected and coupled ...


7
Sun Jae Yang, Chang Ju Kim, Hyung Joon Moon, Seung Mok Song, Chang Geun Shin, Jun Ho Lee, Yeon Chul Choo: Pressure compensation device and ECU module including the same. Hyundai Autron, Morgan Lewis & Bockius, August 15, 2017: US09736953

Disclosed herein is a pressure compensation device for securing the air permeability of the electronic control unit (ECU) of a vehicle. A pressure compensation device according to an aspect of the present invention includes a vent unit integrated with a connector on a part of an ECU on which an elec ...


8
Yeon Chul Choo, Sun Jae Yang, Chang Ju Kim, Seung Mok Song, Ju Hyung Lee: Electronic control apparatus for vehicle using overmolding and manufacturing method thereof. HYUNDAI AUTRON, Mayer Brown, Hyunho Park, April 12, 2016: US09313932

The present disclosures provides an electronic control apparatus for a vehicle using overmolding in which a heat radiating plate is attached to an opposite side of a part requiring heat radiation in a printed circuit board (PCB) and a part other than the part, to which the heat radiating plate is at ...


9
Chang Ju Kim, Chang Geun Shin, Dong Gi Lee, Jun Ho Lee, Yeon Chul Choo: Electronic control apparatus for vehicle using water proof type housing sealing and method thereof. HYUNDAI AUTRON, Mayer Brown, Hyunho Park, October 18, 2016: US09474170

The present disclosure relates to an electronic control apparatus for a vehicle using waterproof type housing sealing and a manufacturing method thereof, in which when a connector cover including a sealing material injection hole formed on a front surface is coupled with a body coupling part, a seal ...


10
Yeon Chul Choo: Remaining battery capacity corrector and controlling method therefor. Robert E Bushnell, July 18, 2002: US20020093312-A1

A remaining battery capacity corrector and a controlling method therefor are provided. The remaining battery capacity corrector corrects errors in a calculated remaining battery capacity and includes a voltage detector for detecting an output voltage of a battery, a current detector for detecting an ...