Abstract: A device and method for automatically changing a broadcast channel of a vehicle television with a diversity antenna is provided. The device includes an antenna switching unit connected with the diversity antennas and switching one of the diversity antennas; an image signal level detector for detecting an image signal level; an audio signal level detector for detecting an audio signal level; a storage unit for storing regional broadcast channel information, a channel change history, a value of number of switching times; and a controller for controlling the antenna switching unit, counting and storing the number of switching times, checking a quality of the broadcast signal, deciding a desired broadcast channel, and controlling the tuner to change into the decided broadcast channel.

Abstract: An antenna diversity device and method in a terrestrial digital multimedia broadcasting (DMB) is provided. In a DMB receiver, the device includes: a BER measuring unit for receiving DMB data, measuring a BER of the received DMB data, and transmitting the measured BER to a MICOM (Micro COMputer) to realize antenna diversity for securing a deviation of a reception sensitivity, which can occur when a car is moved, and a quality of reception; the MICOM for controlling a general operation of the DMB receiver, and receiving the measured BER from the BER measuring unit and controlling the antenna diversity depending on the received BER; and an antenna switching unit for sequentially switching to the antenna having the best reception state among the plurality of antennas under the control of the MICOM.

Abstract: A device and method for automatically changing a broadcast channel of a vehicle television with a diversity antenna is provided. The device includes an antenna switching unit connected with the diversity antennas and switching one of the diversity antennas; an image signal level detector for detecting an image signal level; an audio signal level detector for detecting an audio signal level; a storage unit for storing regional broadcast channel information, a channel change history, a value of number of switching times; and a controller for controlling the antenna switching unit, counting and storing the number of switching times, checking a quality of the broadcast signal, deciding a desired broadcast channel, and controlling the tuner to change into the decided broadcast channel.