Abstract: An electronic device including a battery pack and an operation method of the electronic device is provided. The electronic device includes a system circuitry and a battery pack, wherein the battery pack includes a battery management circuitry, a protection operation circuitry, and a battery, wherein the battery management circuitry may be configured to identify a state of the battery to obtain battery state information, activate, on the basis of the battery state information, a ship mode for minimizing power consumption of the battery, and control the protection operation circuitry to electrically disconnect the system circuitry from the battery pack, inactivate the ship mode on the basis of connection between a power key included in the system circuitry and a first pin of the battery management circuitry, and control the protection operation circuitry to electrically connect the system circuitry to the battery pack.

Abstract: According to an embodiment, a battery pack comprises a battery cell including a positive electrode and a negative electrode and configured to generate an electromotive force via the positive electrode and the negative electrode, a plurality of first sub paths configured to connect the positive electrode to a sensing circuit of an electronic device to which the battery pack is connected, a plurality of second sub paths configured to connect the negative electrode to the sensing circuit, a power line configured to connect the positive electrode and the negative electrode to at least one of a system of the electronic device or a charging circuit of the electronic device, a first switch configured to selectively connect at least one of the plurality of first sub paths, selected depending on a voltage applied to the positive electrode and the negative electrode, to the sensing circuit, and a second switch configured to selectively connect at least one of the plurality of second sub paths, selected depending on the

Abstract: An electrostatic induction device is provided which includes at least one first element including a first electrode, a second electrode electrically connected to the first electrode, and a third electrode electrically connected to the first electrode and the second electrode, at least one second element including a charged area having been charged with positive or negative charges and moves while adjacent to the first element so as to cause an electrostatic induction action with the first element, and a third element which is electrically connected to the first element, and receives, from the first element, a first electric current generated between the first and the second electrode, a second electric current generated between the first and the third electrode, and a third electric current generated between the second and the third electrode, by the movement of the second element, and rectifies the received first, second and third electric currents.

Abstract: According to an embodiment, a battery pack comprises a battery cell including a positive electrode and a negative electrode and configured to generate an electromotive force via the positive electrode and the negative electrode, a plurality of first sub paths configured to connect the positive electrode to a sensing circuit of an electronic device to which the battery pack is connected, a plurality of second sub paths configured to connect the negative electrode to the sensing circuit, a power line configured to connect the positive electrode and the negative electrode to at least one of a system of the electronic device or a charging circuit of the electronic device, a first switch configured to selectively connect at least one of the plurality of first sub paths, selected depending on a voltage applied to the positive electrode and the negative electrode, to the sensing circuit, and a second switch configured to selectively connect at least one of the plurality of second sub paths, selected depending on the

Abstract: Disclosed is a photovoltaic cell including a first electrode and a second electrode having transparency and disposed facing each other, and a photovoltaic cell layer disposed between the first and second electrodes, and configured to produce electric energy by absorbing a part of incident light, wherein the photovoltaic cell layer includes a plurality of unit cells disposed in a specific distance from each other and formed with a plurality of slits for polarizing the incident light, and a transparent insulator disposed in the plurality of slits.

Abstract: An interface device and method between an electronic device and an external device using an ear jack of a smart device are disclosed in order to implement an interface that is capable of automatically recognizing an ear jack insertion type appcessory. The interface device includes: an electronic device including an ear jack including a plurality of audio signal input and output terminals; an external device including an interface unit including a connector unit configured to be inserted into the ear jack, the connector unit including a plurality of terminals that correspond to the plurality of audio signal input and output terminals provided in the ear jack of the electronic device, respectively; and a recognizing unit on the connector unit of the interface unit configured to recognize whether the external device is connected to the ear jack of the electronic device through a plurality of detections.

Abstract: Disclosed is a photovoltaic cell including a first electrode and a second electrode having transparency and disposed facing each other, and a photovoltaic cell layer disposed between the first and second electrodes, and configured to produce electric energy by absorbing a part of incident light, wherein the photovoltaic cell layer includes a plurality of unit cells disposed in a specific distance from each other and formed with a plurality of slits for polarizing the incident light, and a transparent insulator disposed in the plurality of slits.

Abstract: An electrostatic induction device is provided which includes at least one first element including a first electrode, a second electrode electrically connected to the first electrode, and a third electrode electrically connected to the first electrode and the second electrode, at least one second element including a charged area having been charged with positive or negative charges and moves while adjacent to the first element so as to cause an electrostatic induction action with the first element, and a third element which is electrically connected to the first element, and receives, from the first element, a first electric current generated between the first and the second electrode, a second electric current generated between the first and the third electrode, and a third electric current generated between the second and the third electrode, by the movement of the second element, and rectifies the received first, second and third electric currents.

Abstract: An electronic device according to various embodiments of the present disclosure may include a communication module configured to communicate wirelessly with an external device; an ear jack configured to include at least one ear jack terminal; an audio processing unit configured to process an audio signal; and a control unit configured to: detect a coupling with the external device through the ear jack, determine whether the electronic device is in a power transmission mode, control the audio processing unit to generate an ear jack signal when the electronic device is in a power transmission mode, output the ear jack signal by amplifying the ear jack signal so that power is supplied to the coupled external device, and to output the audio signal to the ear jack terminal when the electronic device is not in a power transmission mode.

Abstract: An interface device and method between an electronic device and an external device using an ear jack of a smart device are disclosed in order to implement an interface that is capable of automatically recognizing an ear jack insertion type appcessory. The interface device includes: an electronic device including an ear jack including a plurality of audio signal input and output terminals; an external device including an interface unit including a connector unit configured to be inserted into the ear jack, the connector unit including a plurality of terminals that correspond to the plurality of audio signal input and output terminals provided in the ear jack of the electronic device, respectively; and a recognizing unit on the connector unit of the interface unit configured to recognize whether the external device is connected to the ear jack of the electronic device through a plurality of detections.

Abstract: Disclosed are a device and a method for managing files, in which a file list of a user's files stored in at least one user device belonging to the user and at least one storage server providing a service to which the user has subscribed is converted into an integrated file list according to a preset form, and the converted integrated file list is stored. Through the integrated file list, all files stored in user devices belonging to one user or storage servers providing services to which one user has subscribed can be managed.

Abstract: A tin-based, two-component alloy electroplating composition comprising 20 to 500 g/l of a tin salt, 1 to 100 g/l of a metal salt selected from the group consisting of a zinc, cobalt, bismuth and copper salt, 20 to 200 g/l of methanesulfonic acid, 10 to 300 g/1 of a conductive compound, and 0.5 to 50 g/l of a complexing agent provides a plating layer having excellent corrosion resistance and solderability to electronic devices such as lead frames, connectors and printed circuit boards.