| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle television antenna system which separates received radio waves for analog TV and digital TV with simple constitution without any increase in cost. SOLUTION: Antennas 11 and 12 receive both the radio wave for analog TV and the radio wave for digital TV. Antennas 15 and 16 are antennas dedicated to analog TV. A TV selector 20 has switches 21 and 22 inside. With control signals DIV1 and DIV2 from an AV navigation section 50, the selector 24 selects one of radio waves received by the antennas 11, 12, 15, and 16. With the control signals DIV1 and DIV2, the switches 21 and 22 are changed over to output the received signal for analog TV to an attenuator 23 and the received signal for digital TV to external terminals 28 and 29. COPYRIGHT: (C)2007,JPO&INPIT
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