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

• US 5,523,950 A
• Filed: 05/08/1995
• Issued: 06/04/1996
• 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): Trans, Vincent N.
• Application Number:
  US08/436,892
• Time in Patent Office: 393 Days
• Field of Search: 364/443, 364/449, 364/436-438, 364/460, 364/461, 340/905, 340/988, 340/989, 340/990, 340/995, 340/993
• US Class Current: 455/456.5
• 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 1/096822 where the segments of the route are transmitted to the vehicle at different locations and times
• CPC Class Codes: G08G 1/09685 where the complete route is computed only once and not updated
• CPC Class Codes: G08G 1/096861 where the immediate route instructions are output to the driver, e.g. arrow signs for next turn
• 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 and directly monitoring instant rates of travel on multiple route segments interconnecting various possible origins and destinations by sensor means located on the respective route segments;

transferring the instant rates of travel for each of the multiple route segments to a central processor;

receiving information of desired origin and destination combinations in the central processor from different users;

calculating in the central processor the route segment or combination of route segments providing a shortest elapsed time route between each origin-destination combination; and

transmitting information of the shortest elapsed time routes for the origin-destination combinations from the central processor to the respective users whereupon route selection by the central processor is based on an accurate comparison of instant rates of travel along the respective route segments and each user receives specific information from the central processor as to the combination of route segments providing the shortest elapsed time route between the origin and destination for that user.

2. 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.

3. The method of claim 2 wherein the two steps of receiving and transmitting information are carried out by means of cellular telephone.

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

5. The method of claim 1 further comprising the step of collecting historical real time data in the central 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.

6. The method of claim 5 further comprising the step of receiving information from the users includes a contemplated time of departure.

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

8. The method of claim 7 further comprising the use of cellular telephone 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.

9. 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.

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

11. The method of claim 10 further comprising the step of collecting historical real time data in the central 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.

12. 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.

13. Apparatus for determining and communicating shortest elapsed time route information to users, comprising

sensor means for individually monitoring instant rates of travel on multiple route segments interconnecting various possible origins and destinations, the sensor means being located on the respective route segments;

means for transferring the instant rates of travel for each of the multiple route segments to a central processor;

means for receiving information of desired origin and destination combinations in the central processor from different users;

means in the central processor for calculating the route segment or combination of route segments providing a shortest elapsed time route between each origin-destination combination; and

means for transmitting information of the shortest elapsed time routes for the origin-destination-combinations from the central processor to the respective users, whereupon route selection is based on an accurate reflection of instant rates of travel along the respective route segments and each user receives specific information from the central processor as to the combination of route segments providing the shortest elapsed time between the origin and destination for that user.

14. The apparatus of claim 13 wherein the means for receiving information of desired origin-destination combinations and means for transmitting information of shortest elapsed time routes for the origin-destination combinations comprise telephonic means.

15. The apparatus of claim 14 wherein the means for receiving and transmitting information comprise cellular telephone.

16. The apparatus of claim 13 wherein the means for receiving information from the users includes means for receiving contemplated times of departure from the users.

17. The apparatus of claim 13 further comprising means for collecting historical real time data in the central 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.

18. The apparatus of claim 13 wherein the transmitted information comprises the transmission of video data and comprises the step of transmitting information to the respective user cellular telephone for transmitting the information of shortest elapsed time routes for the origin-destination combinations and further comprising video receivers for displaying the shortest elapsed time routes to the respective users.

19. The apparatus of claim 13 further comprising means for 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.

20. The apparatus of claim 13 wherein the means for receiving information from the users is capable of receiving information including multiple destinations, shortest elapsed time routes being calculated for the multiple destinations and transmitted to the respective users.

21. The apparatus of claim 13 further comprising a plurality of rate sensors arranged along each route segment in order to provide a more accurate calculation of the shortest elapsed time routes for the origin-destination combinations.