Guidance system for individual traffic

Claim 1

A vehicle guidance system comprising: a selection network of selection fields including a plurality of beacon devices each of which is located at the midpoint of a respective selection field for transmitting a guidance message including a location message identifying the location of the beacon and guidance information, the guidance information including specific information relating to each of the selection fields for travel to a respective selection field; in a vehicle a receiver for receiving a guidance message from a beacon as the vehicle passes a respective beacon device; input means including destination input means for generating destination messages; output means including indicator means for indicating guidance information in response to guidance signals; and evaluating means connected to said receiver, connected to said input means and connected to said output means, said evaluation means including a subtractor connected to said receiver and connected to said destination input means for forming relative destination coordinates from a location message and a destination message, a selection field memory storing coordinates of the selection fields of the selection network, a first comparator connected to said subtractor and connected to said selection field memory for producing an address of a specific selection field of a destination, a guide information memory connected to said output means, and a second comparator including a first input connected to said first comparator, a second input connected to said receiver and an output connected to said guide information memory, and responsive to said addresses of said specific selection field and the transmitted specific information relating to said specific selection field to store said specific information in said guide information memory.

Claim 10

A method for guiding a vehicle through a selection network of selection fields each representing a specific area of the network and each including a guide beacon device at its mid-point, the selection fields being located in rings about the mid-point of the selection network and being of exponentially increasing size with increasing distance from the network mid-point, comprising the steps of: storing the coordinates of the selection fields in a vehicle; generating a destination message including the coordinates of the desired destination; transmitting to the vehicle as it passes a beacon device a guidance message including specific information relating to each of the selection fields for travel to the respective selection field; receiving the guidance message in the vehicle; subtracting the destination coordinates from the location coordinates of the beacon being passes to obtain relative destination coordinates of the desired location; comparing the relative destination coordinates with the stored coordinates of the selection fields to select data identifying a specific selection field; comparing the specific selection field data with the received guidance message to select all guidance data from the guidance message relating to the specific selection field; storing the selected guidance data; producing, upon receipt of a guidance message, dead-reckoning vector data corresponding to the travel of the vehicle; and displaying the guidance data in accordance with the vehicle position corresponding to the dead-reckoning data.

Claim 11

A method for guiding a vehicle through a selection network of selection fields each representing a specific area of the network and each including a guide beacon device at its mid-point, the selection fields being located in rings about the mid-point of the selection network and being of exponentially increasing size with increasing distance from the network mid-point, comprising the steps of: storing the coordinates of the selection fields in a vehicle; generating a destination message including the coordinates of the desired destination; transmitting to the vehicle as it passes a beacon device a guidance message including specific information relating to each of the selection fields for travel to the respective selection field; receiving the guidance message in the vehicle; subtracting the destination coordinates from the location coordinates of the beacon being passes to obtain relative destination coordinates of the desired location; comparing the relative destination coordinates with the stored coordinates of the selection fields to select data identifying a specific selection field; comparing the specific selection field data with the received guidance message to select all guidance data from the guidance message relating to the specific selection field; storing the selected guidance data; producing, upon receipt of a guidance message, dead-reckoning vector data corresponding to the travel of the vehicle; and displaying the guidance data in accordance with the vehicle position corresponding to the dead-reckoning data.