Abstract: A bias circuit of an amplifying device including amplifying circuits and a bypass circuit responding to a first control signal, includes a first bias circuit, a second bias circuit, and a compensating circuit. The first bias circuit is configured to supply a first base bias voltage to a first amplifying circuit of the amplifying circuits in response to a second control signal. The second bias circuit is configured to supply a second base bias voltage to a second amplifying circuit of the amplifying circuits in response to a third control signal. The compensating circuit is connected to either one or both of the first bias circuit and the second bias circuit, and configured to vary an impedance in response to a fourth control signal, and compensate for either one or both of the first base bias voltage and the second base bias voltage based on the varied impedance.

Abstract: A bias circuit of an amplifying device including amplifying circuits and a bypass circuit responding to a first control signal, includes a first bias circuit, a second bias circuit, and a compensating circuit. The first bias circuit is configured to supply a first base bias voltage to a first amplifying circuit of the amplifying circuits in response to a second control signal. The second bias circuit is configured to supply a second base bias voltage to a second amplifying circuit of the amplifying circuits in response to a third control signal. The compensating circuit is connected to either one or both of the first bias circuit and the second bias circuit, and configured to vary an impedance in response to a fourth control signal, and compensate for either one or both of the first base bias voltage and the second base bias voltage based on the varied impedance.

Abstract: Various embodiments of the present disclosure relate to an electronic device and a method for executing content by using sight-line information thereof, the electronic device comprising: a display; a sight-line tracking module; a memory storing at least one command; and at least one processor operatively coupled with the display, the sight-line tracking module and the memory.

Abstract: Provided is a device including: a display unit configured to display handwritten content based on an analog handwritten input of a user; a user input unit that receives a user input of selecting a portion of the handwritten content displayed on the display unit; and a control unit reproduces a segment of multimedia content, which corresponds to the portion of the handwritten content, from the multimedia content synchronized with the handwritten content.

Abstract: A power amplifier circuit includes a bias circuit and an amplifier circuit. The bias circuit includes a first bias circuit to receive a reference voltage and an operation voltage and generate a first bias signal, a bias supply circuit to transmit the base bias signal to a base of a power amplifier, based on the first bias signal input from the first bias circuit, a switching control circuit to transmit a switching signal after a preset delay time based on a driving start signal, and a switching circuit connected between an output node of the first bias circuit and a ground, to operate in an ON state after the delay time in response to the switching signal to form a current path between the output node of the first bias circuit and the ground.

Abstract: A capacitive deionization apparatus may include at least one pair of porous electrodes and a spacer structure disposed between the at least one pair of electrodes. The at least one pair of porous electrodes may include an electrode material having a surface area for the electrostatic adsorption of feed ions. The spacer structure may include an electrically-insulating material with an ion exchange group on the surface thereof. The spacer structure provides a path for flowing a fluid therethrough.

Abstract: An electronic apparatus and a method for controlling the sound of the electronic apparatus are provided. The electronic apparatus includes: a display configured to display content; a speaker configured to output sound; a communicator configured to receive information from an external remote control device; and a controller configured to control the display, the speaker, and the communicator, wherein the controller is configured to, in response to the communicator receiving first control information from the remote control device while the display displays first content and the speaker outputs a first sound corresponding to the first content, control the display to display second content and control the speaker to continuously output the first sound.

Abstract: A method and a device for providing content are provided. The device includes a display configured to display content, and an interface configured to receive a first input that selects a part of the displayed content, and a second input that requests to change a size of the displayed content. The device further includes a controller configured to control the display to display the selected part of the displayed content and an unselected part of the displayed content by changing a size of the selected part and a size of the unselected part to be different from each other, in response to the interface receiving the second input.

Abstract: A method and apparatus for reproducing a portion of handwriting displayed on a screen in a same temporal manner in which the handwriting was handwritten.

Abstract: An electronic apparatus and a method for controlling the sound of the electronic apparatus are provided. The electronic apparatus includes: a display configured to display content; a speaker configured to output sound; a communicator configured to receive information from an external remote control device; and a controller configured to control the display, the speaker, and the communicator, wherein the controller is configured to, in response to the communicator receiving first control information from the remote control device while the display displays first content and the speaker outputs a first sound corresponding to the first content, control the display to display second content and control the speaker to continuously output the first sound.

Abstract: A power amplifier circuit includes a bias circuit and an amplifier circuit. The bias circuit includes a first bias circuit to receive a reference voltage and an operation voltage and generate a first bias signal, a bias supply circuit to transmit the base bias signal to a base of a power amplifier, based on the first bias signal input from the first bias circuit , a switching control circuit to transmit a switching signal after a preset delay time based on a driving start signal , and a switching circuit connected between an output node of the first bias circuit and a ground, to operate in an ON state after the delay time in response to the switching signal to form a current path between the output node of the first bias circuit and the ground.

Abstract: A mobile device, a method performed by the mobile device for receiving a service from a server, and a non-transitory computer-readable recording medium having recorded thereon a program for executing the method performed by the mobile device are provided. The mobile device includes communication circuitry configured to receive a signal transmitted from a wireless transmitter; and a processor configured to determine identification information of the wireless transmitter based on the received signal and signal intensity information based on an intensity of the received signal, and provide the identification information and the determined signal intensity information to an application executed in the mobile device in order to send, to a server, a request for information based on the identification information and the determined signal intensity information.

Abstract: Provided is a device including: a display unit configured to display handwritten content based on an analog handwritten input of a user; a user input unit that receives a user input of selecting a portion of the handwritten content displayed on the display unit; and a control unit reproduces a segment of multimedia content, which corresponds to the portion of the handwritten content, from the multimedia content synchronized with the handwritten content.

Abstract: An electronic apparatus is provided. The electronic apparatus includes a sensor configured to sense an input of a touch pen and output a signal corresponding to the input of the touch pen, a display configured to include a first layer and a second layer, display a graphical object in the first layer, and display a handwriting image based on the input of the touch pen in the second layer, and a controller configured to control the display to change a display direction of the graphical object displayed in the first layer based on the signal output from the sensor.

Abstract: Provided is a device including: a display unit configured to display handwritten content based on an analog handwritten input of a user; a user input unit that receives a user input of selecting a portion of the handwritten content displayed on the display unit; and a control unit reproduces a segment of multimedia content, which corresponds to the portion of the handwritten content, from the multimedia content synchronized with the handwritten content.

Abstract: The present disclosure relates to a spacer structure that is configured to be disposed between a pair of electrodes in a capacitive deionization apparatus so as to provide a space for flowing a fluid therethrough. The spacer structure includes a copolymer prepared by copolymerizing a mixture of a polyurethane backbone including a carboxyl group or a sulfonic acid group, an ion conductive monomer including a carboxyl group and a cation exchange group, and a second polymer including a functional group that reacts with the carboxyl group or sulfonic acid group and forms a cross-linking bond with the polyurethane backbone.

Abstract: A mobile device, a method performed by the mobile device for receiving a service from a server, and a non-transitory computer-readable recording medium having recorded thereon a program for executing the method performed by the mobile device are provided. The mobile device includes communication circuitry configured to receive a signal transmitted from a wireless transmitter; and a processor configured to determine identification information of the wireless transmitter based on the received signal and signal intensity information based on an intensity of the received signal, and provide the identification information and the determined signal intensity information to an application executed in the mobile device in order to send, to a server, a request for information based on the identification information and the determined signal intensity information.

Abstract: A mobile device and a method performed by the mobile device for receiving a service from a server are provided. The mobile device includes communication circuitry configured to receive a signal transmitted from a wireless transmitter, wherein the mobile device is located within a detectable range from the wireless transmitter; and a processor configured to determine signal intensity information based on an intensity of the received signal, and send, to a server, a request for information based on the determined signal intensity information.

Abstract: A method of providing information related to an object is provided. The method includes sensing a gesture related to the object located in a certain area via a first device, obtaining content related to the object according to the sensed gesture, and transmitting the obtained content to a second device that is connected with the first device in a network, wherein the content is output via the second device.

Abstract: Disclosed are taxifolin derivative with superior antioxidant effect, a method of synthesizing the same and a cosmetic composition containing the same. In accordance with the method, taxifolin derivatives having higher antioxidant activity than taxifolin can be synthesized using lipoic acid. As such, a novel taxifolin derivative synthesized according to the present invention can exhibit anti-aging effects when used for cosmetics and the like.