Abstract: An assistive system according to an embodiment of the present disclosure includes a cradle module including a holder body on which a user terminal is to be placed and a drive unit configured to drive the holder body, the cradle module configured to output a terminal connection signal when the user terminal is placed on the holder body, and an assistant server configured to receive the terminal connection signal from the cradle module and execute an assistive service, the assistant server configured to control the drive unit by a preset drive pattern through a drive control signal when executing the assistive service. It is possible to easily and conveniently identify a plurality of assistive services outputted according to each situation by controlling a cradle module through a drive pattern corresponding to an assistive service while outputting a voice corresponding to the assistive service when executing the assistive service.

Abstract: A semiconductor circuit includes a first selection circuit which selects a first battery or a first capacitor, a second selection circuit which selects a second battery or a second capacitor, a voltage measuring circuit which measures a first voltage of the first battery or the first capacitor selected by the first selection circuit, and measures a second voltage of the second battery or the second capacitor selected by the second selection circuit, a controller which compares the first voltage and the second voltage to generate a comparison result, and a switching circuit which receives a signal based on a target output voltage, connects the first battery or capacitor selected by the first selection circuit, and the second battery capacitor selected by the second selection circuit in an interconnection relationship based on the comparison result to provide to an output terminal an output voltage responsive to the target output voltage.

Abstract: An embodiment of the disclosure provides a positive electrode material for a lithium secondary battery and a method for producing the same, which uses a caffeine organic material as the positive electrode material of the lithium secondary battery.

Abstract: An antenna assembly is disclosed which can minimize interference of antennas for communication services. The antenna assembly is suitable to minimize side-lobes and back-lobes interfering with each other in antennas used in a repeater for communication services. The antenna assembly includes a reflector having a structure capable of minimizing radiation patterns having front-to-back ratio (FTBR) characteristics, namely, back-lobes.

Abstract: A unified communication repeater for wireless communication repeats signals between a network and communication terminals via a wireless line. The unified communication repeater precisely and stably prevents oscillation generation during bidirectional signal repeating, and minimizes radiation patterns serving as signal interference between a receiver antenna and a transmitter antenna for the bidirectional signal repeating.

Abstract: An antenna assembly is disclosed which can minimize interference of antennas for communication services. The antenna assembly is suitable to minimize side-lobes and back-lobes interfering with each other in antennas used in a repeater for communication services. The antenna assembly includes a reflector having a structure capable of minimizing radiation patterns having front-to-back ratio (FTBR) characteristics, namely, back-lobes.