Method and apparatus for providing shortest elapsed time route and tracking information to users

• US 5,845,227 A
• Filed: 02/09/1996
• Issued: 12/01/1998
• Est. Priority Date: 02/01/1991
• Status: Expired due to Term

• Current Assignee: Thomas D Peterson
• Original Assignee: Thomas D Peterson
• Inventors: Peterson, Thomas D.
• Primary Examiner(s): Chin, Gary
• Application Number:
  US08/599,309
• Time in Patent Office: 1,026 Days
• Field of Search: 701/117, 701/119, 701/200, 701/202, 701/208, 701/209, 701/210, 701/213, 340/905, 340/988, 340/989, 340/990, 340/993, 340/995
• US Class Current: 701/209
• CPC Class Codes: G01C 21/3492 employing speed data or traffic data, e.g. real-time or historical traffic control systems for road vehicles involving transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G08G 1/096811 where the route is computed offboard
• CPC Class Codes: G08G 1/096883 where input information is obtained using a mobile device, e.g. a mobile phone, a PDA
• CPC Class Codes: G08G 1/096894 where input is assisted by the navigation device, i.e. the user does not type the complete name of the destination, e.g. using zip codes, telephone numbers, progressively selecting from initial letters

Abstract

A method and apparatus for determining and communicating shortest elapsed time route information to users wherein information of desired origin and destination combinations is received from the users in a central processor or computer, instant rates of travel on multiple route segments interconnecting various possible origins and destinations being monitored and transferred to the central processor which then calculates the route segment or segment combination providing shortest elapsed time routes for each origin-destination combination and transmitting that information to the respective user. Communication between the central processor and the users is preferably by telephone and more preferably by cellular telephone.

Claims

1. A method for determining and communicating shortest elapsed time route information to users, comprising the steps of:

individually monitoring instant rates of vehicular travel on multiple route segments interconnecting various possible origins and destinations, such monitoring to include the use of sensing means, differential video imaging means wherein a fixed video camera measures rates of travel, Global Positioning System means for measuring movements of a moving vehicle, loop detectors and tag reading devices for reading the passage of tag-bearing vehicles;

transferring the monitored instant rates of travel for the multiple route segments to a processor based on the tag readings, the Global Positioning System readings and the loop detector readings which identify the vehicle at more than one location from which said instant rates of vehicular travel are calculated;

receiving information of desired origin and destination in said processor from at least one user, including vehicle type and number of passengers, such that shortest time route calculation would include all route segments and lanes for which the vehicle has permission to travel;

calculating the route segment or combination of route segments based on the monitored instant rates of travel to provide a shortest elapsed time route between each origin-destination combination; and

transmitting information of the shortest elapsed time routes for the origin-destination combination to the respective user.

2. A method as set forth in claim 1, including monitoring the user'"'"'s trip progress by Global Positioning System signal by recalculating the remaining route continuously using the then-current sensed information and calling the user if the directions can be improved.

3. A method as set forth in claim 1, wherein the received information of desired origin and destination combination includes an identifier where the user can be contacted during the trip.

4. The method of claim 1 wherein the steps of receiving information of desired origin-destination combinations and transmitting information of shortest elapsed time routes for the origin-destination combinations are carried out by means of telephone.

5. The method of claim 4 wherein the two steps of receiving and transmitting information are carried out by means of cellular telephone.

6. A method as set forth in claim 1, including interaction with a user with an internet worldwide network, and wherein web sites are used in place of computers and networks to replace traditional telephone switching systems.

7. The method of claim 1 further comprising the step of receiving information from the users includes a contemplated time of departure.

8. The method of claim 1 further comprising the step of collecting historical real time data in the processor to determine normal time variations for the instant rates of travel for the multiple route segments and employing the historical real time data in calculating the shortest elapsed time route between each origin-destination combination.

9. The method of claim 8 further comprising the step of receiving information from the users includes a contemplated time of departure.

10. The method of claim 1 wherein the step of transmitting information to the respective users comprises the transmission of video data.

11. The method of claim 10 further comprising the use of cellular telephone for transmitting the information of shortest elapsed time routes for the origin-destination combinations and providing video receivers for displaying the shortest elapsed time routes to the respective users.

12. The method of claim 1 further comprising the step of storing data for the shortest elapsed time routes for each respective user for a predetermined time and transmitting updated information of the shortest elapsed time routes to the respective users.

13. The method of claim 1 wherein the step of receiving information from the users includes multiple destinations, the shortest elapsed time routes being calculated for the multiple destinations and transmitted to the respective users.

14. The method of claim 13 further comprising the step of collecting historical real time data in the processor to determine normal time variations for the instant rates of travel for the multiple route segments and employing the historical real time data in calculating the shortest elapsed time route between each origin-destination combination.

15. The method of claim 1 further comprising the step of monitoring instant rates of travel at a plurality of locations along each route segment in order to provide a more accurate calculation of the shortest elapsed time routes for the origin-destination combinations.