| 摘要 |
PROBLEM TO BE SOLVED: To realize an electronic apparatus capable of correctly deciding a broadcast system type with a simple structure. SOLUTION: A tuner control program selects a filter characteristic enabling a video decoder 203 to detect vertical synchronizing signal, horizontal synchronizing signal and color subcarrier signal, by referring to the detection result of the vertical synchronizing signal, the horizontal synchronizing signal and the color subcarrier signal obtained in the video decoder 203, while successively changing a filter characteristic type which is set in an IF demodulator 202 among a plurality of types of the filter characteristics. Also, based on the selected filter characteristic type and the respective frequencies of the vertical synchronizing signal, the horizontal synchronizing signal and the color subcarrier signal detected in the video decoder 203, the tuner control program decides the broadcast system type corresponding to the broadcast signal under reception. COPYRIGHT: (C)2007,JPO&INPIT |
