Abstract: A duty cycle correction circuit includes a duty correction circuit, an information generation circuit and a duty control circuit. The duty correction circuit corrects a duty rate of an input clock signal based on a duty control code to generate an output clock signal. The information generation circuit compares a difference between operation power voltages based on an operation mode to generate voltage information. The duty control circuit receives the voltage information from the information generation circuit and generates the duty control code that includes the voltage information based on a duty rate of the output clock signal.

Abstract: An electronic device connection apparatus and a control method thereof is disclosed. The electronic device connection apparatus may include a connector connected to an electronic device, an input device that generates, in response to a user input, a mode change signal instructing a change of an operation mode for determining a charging and/or a data transmission operation of the electronic device. The apparatus may include a controller that charges the electronic device connected to the connector and/or performs a data communication with the electronic device in response to a preset operation mode, and changes the operation mode in response to the mode change signal.

Abstract: An antenna device for a vehicle and a manufacturing method thereof are provided. The antenna device includes an antenna coil disposed in a helical antenna shape having a substantially constant pitch interval and a connector disposed on a first end of the antenna coil. A cylinder member, electrically connected to the antenna coil, is disposed on a second end of the antenna coil. A first fixing member covers a portion of the connector and the first end of the antenna coil to fix the antenna coil to the connector. A second fixing member is filled into a hollow portion and a gap within the substantially constant pitch interval and a third fixing member covers the second end of the antenna coil. A cover member covers the antenna coil, a portion of the connector, the cylinder member, the first fixing member, the second fixing member and the third fixing member.

Abstract: A radio receiver for a vehicle and a control method thereof is disclosed. The radio receiver includes a diversity receiver module coupled to multiple antennas. The diversity receiver module is configured to select a first wave signal from a first antenna to be provided as input into an audio system. A comparator compares the intensity of the first radio wave signal to a reference value. Based on the results of the comparison, the comparator signals the diversity receiver module to select a second radio wave signal from a second antenna to be provided as input the audio system.