| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation device incorporating a TV tuner which is so configured that a local oscillation signal of the TV tuner does not interfere with a GPS tuner unit. SOLUTION: The navigation device includes a received channel storage device 32 for storing a received channel of the TV tuner unit 21 and a channel comparison means 33 for discriminating whether the received channel is a predetermined specific channel or not. When an image selection means 17 switches a signal to be selected from an output signal of the TV tuner unit to an output signal of a navigation image processing unit, when the received channel of the TV tuner unit is the specific channel, the channel received by the TV tuner unit is changed into a channel other than the specific channel. |
