Samsung Electronics Co., Ltd.

Sungeun Lee

Sangun Bang

Dongjo Kim

Dongjoon Kim

Woonhyung Heo

Jinsoo Lee

Duseung Oh

Junhan Bae

Jaehyun Bae

Arom Lee

Youngsoo Lee

A portable device includes: a modem configured to perform power line communication with a charger external to the portable device; and a charging circuit configured to, from first power provided by the charger, charge a battery and supply power to an electrical load, wherein the charging circuit is further configured to cut off the supply of the first power to the electrical load and supply second power from the battery to the electrical load.

Portable device communicating with charger and method of operating the same

A mobile system includes a first mobile device configured to output a signal having a level less than or equal to a reference level on the basis of a charged state of a battery in the first mobile device and a second mobile device configured to receive the signal and to selectively provide power to the first mobile device on the basis of a duration time for which a level of the signal is maintained to be less than or equal to the reference level and a toggle time for which the signal is toggled.

Mobile device and operating method thereof

A portable device and an operating method of the same are provided. The portable device includes a power line communication module performing power line communication with an external device, a memory module storing firmware data, and a controller controlling the power line communication module and the memory module, wherein the power line communication module sequentially provides an update initiation signal and firmware data to the external device, and provides an update end signal to the external device in response to a response signal transmitted by the external device.

Portable device communicating with charger and operating method thereof

A foreign substance detecting circuit may include a voltage detector that may detect a voltage level from a first pin of a connector, a slope detector that may detect a voltage slope indicating a change of the voltage level based two voltage levels from the first pin, and a foreign substance determining device that may determine a presence of a foreign substance in the connector. The foreign substance determining device may determine whether a resistance range of an external device is detected from the at least one first pin based on the detected voltage level. The foreign substance determining device may, when the resistance range is detected, determine that the foreign substance is present in the connector, based on the voltage slope having a value determined to correspond to charge and discharge characteristics due to a capacitance element of the foreign substance.

Foreign substance detecting circuits, electronic devices having the same, and foreign substance detecting methods

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Suwon-si, South Korea

Sungeun Lee