Patent ID: 6233519
Filing Date: 2001-05-15
Classification: G01C,G07B

Abstract:
A car-mounted equipment comprising:an ETC car-mounted unit which executes transmission and reception to and from an ETC on-the-road equipment to at least recognize that a vehicle is approaching or passing through a toll gate;a navigation system which receives electromagnetic waves from a satellite to recognize the absolute position of said vehicle and communicates to a driver at least the position of said vehicle by displaying data or by producing voice data; anda data bus which connects said ETC car-mounted unit and said navigation system together so that said ETC car mounted unit and said navigation system work integrally together to share data;wherein said ETC car-mounted unit sends data to and receives data from said navigation system, and said navigation system sends data to and receives data from said ETC car-mounted unit through said data bus so as to participate in two-way data communication.