| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously receive D-GPS and VICS data even when a detection frequency by an FM multiplex tuner is different by processing and displaying traffic information data and error information data multiplexed on broadcast waves. SOLUTION: A circuit constitution comprises a GPS antenna 1, a GPS block 2, a graphic block 3, etc. The graphic block 3 is provided with a CPU 13 controlling the whole apparatus, etc. The CPU 13 corrects data of a longitude and a latitude of the present position with error information data based on a D-GPS (differential GPS) of an FM multiplex broadcast decoded by an FM multiplex decoder 15, reads out traffic information based on a VICS (vehicle information and communication system) of the FM multiplex broadcast, develops, sends to a graphic controller 17 and superposes onto display data of a video RAM 18. |
