Patent ID: 7508458
Filing Date: 2009-03-24
Classification: H01Q,H04N

Abstract:
1. A digital television broadcast signal receiver connected to a multi-directional antenna having multiple receiving directions provided in a standard for receiving a television broadcast signal by making one of the multiple receiving directions active, the digital television broadcast signal receiver comprising: a control signal output means for outputting, to the multi-directional antenna, a control signal to command a receiving direction of the multi-directional antenna for receiving each television broadcast signal; a receiver circuit connected to the multi-directional antenna for receiving the television broadcast signal; a BER (Bit Error Rate) detection circuit for demodulating the television broadcast signal received by the receiver circuit and detecting a BER value of the received television broadcast signal; a memory for temporarily storing BER values detected by the BER detection circuit; and a receiving direction determining means for determining a best receiving direction for each receivable channel based on the BER values stored in the memory, wherein for determining the best receiving direction for a channel, using the receiving direction determining means, wherein for determining the best receiving direction for a channel, the receiving direction determining means detects a minimum-error receiving direction or directions among all the receiving directions based on the BER values stored in the memory, and determines whether or not there are multiple minimum-error receiving directions, wherein in the case where there is one minimum-error receiving direction, the receiving direction determining means determines the one minimum-error receiving direction as the best receiving direction for the channel, and wherein in the case where there are multiple minimum-error receiving directions, the receiving direction determining means determines one of the minimum-error receiving directions as the best receiving direction for the channel with reference to BER values of receiving directions which are adjacent to the multiple minimum-error receiving directions.