Satellite traffic reporting system and methods

• US 5,862,244 A
• Filed: 07/13/1995
• Issued: 01/19/1999
• Est. Priority Date: 07/13/1995
• Status: Expired due to Term

• Current Assignee: CDC Propriete Intellectuelle
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Kleiner, Norbert, Emmons, Jr., Thomas Peter, Homeyer, David Charles
• Primary Examiner(s): Au, Amelia
• Assistant Examiner(s): CHANG, JON CARLTON
• Application Number:
  US08/502,039
• Time in Patent Office: 1,286 Days
• Field of Search: 382/104, 382/209, 382/217, 382/218, 348/149, 348/144, 348/117, 364/436, 364/437, 364/438, 340/934, 340/910, 340/915, 340/937, 701/117, 701/118, 701/119, 342/454, 342/456
• US Class Current: 382/104
• 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 1/0104 Measuring and analyzing of parameters relative to traffic conditions
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096741 where the source of the transmitted information selects which information to transmit to each vehicle
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element
• CPC Class Codes: G08G 1/096791 where the origin of the information is another vehicle
• CPC Class Codes: G08G 1/096827 where the route is computed onboard
• CPC Class Codes: G08G 1/096838 where the user preferences are taken into account or the user selects one route out of a plurality
• CPC Class Codes: G08G 1/096844 where the complete route is dynamically recomputed based on new data
• CPC Class Codes: G08G 1/096872 where instructions are given per voice

Abstract

With a constellation of low-earth orbiting satellites, instantaneous photographs of all large cities can be made available in real-time or near real-time. Those photographs can be downloaded to ground stations, and there photographically interpreted to determine traffic conditions. The use of high and low photographic resolution permit making distinctions between different causes of traffic conditions. A color-coded map may be generated showing all major roads and their current status, showing such conditions as light traffic, medium traffic, heavy traffic and traffic accidents or jams, for example. These color-coded maps or color-coded alphabetized lists of streets may be broadcast to subscribers (broadcast stations, companies or individuals). From the color-coded traffic report, the subscribers are updated about which routes to avoid and what the best detours are around the more congested areas.

Claims

1. A method for compiling and distributing traffic reports, comprising the steps of:

a) downloading images taken by a satellite to a ground station;

b) analyzing the images to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

c) compiling traffic reports from the analysis of traffic congestion performed in step (b); and

d) distributing the traffic reports to subscriber units.

2. A method as recited in claim 1, wherein step (a) comprises the steps of:

a1) the satellite taking the images using a camera;

a2) the satellite storing the images; and

a3) the satellite transmitting the images to the ground station.

3. A method as recited in claim 1, wherein step (b) comprises the step of executing an image processing algorithm to determine the traffic congestion.

4. A method as recited in claim 1, wherein step (b) comprises the step of executing an image processing algorithm to determine the traffic congestion for some of a plurality of streets shown in the images.

5. A method as recited in claim 1, wherein step (d) includes the step of directly transmitting the traffic reports to the subscriber units.

6. A method as recited in claim 1, wherein step (d) includes the step of transmitting the traffic reports to the satellite where the satellite transmits the traffic reports to the subscriber units.

7. A method for compiling and distributing traffic reports, comprising the steps of:

a) downloading images taken by a satellite to a ground station;

b) analyzing the images to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

c) compiling traffic reports from the analysis of traffic congestion performed in step (b) and compiling the analyses of traffic congestion into an alphabetized list of streets, each of the streets having a color-coded scheme representing a degree of congestion; and

d) distributing the traffic reports to subscriber units.

8. A method as recited in claim 7, wherein step (c) further comprises the steps of:

c1) using a color green to represent light traffic;

c2) using a color yellow to represent medium traffic congestion;

c3) using a color red to represent heavy traffic congestion; and

c4) using a color black to represent a traffic accident or jam.

9. A method for compiling and distributing traffic reports, comprising the steps of:

a) downloading images taken by a satellite to a ground station;

b) analyzing the images to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

c) compiling traffic reports from the analysis of traffic congestion performed in step (b) and compiling the analyses of traffic congestion into an alphabetized list of streets, each of the streets having a bar graph representing a degree of congestion; and

d) distributing the traffic reports to subscriber units.

10. A method as recited in claim 9, wherein the bar graphs are color-coded to represent different levels of traffic congestion.

11. A method for compiling and distributing results of image processing and analysis, comprising the steps of:

a) downloading images taken by a satellite to a ground station;

b) the ground station analyzing the images and comparing the images to previously stored images to determine a percentage of traffic congestion;

c) the ground station compiling reports from the analysis and the comparing of the images performed in step (b); and

d) the ground station distributing the reports to subscriber units.

12. A method for compiling and distributing traffic reports, comprising the steps of:

a) a satellite taking images of a region on earth;

b) the satellite downloading images satellite to a ground station;

c) the ground station analyzing the images to determine traffic congestion by using an image processing algorithm and by comparing the images to previously stored images to determine a percentage of traffic congestion;

d) the ground station compiling the traffic reports from results of the image processing algorithm; and

e) the distributing the traffic reports to subscriber units.

13. A method as recited in claim 12, wherein step (e) includes the step of transmitting the traffic reports to the satellite where the satellite transmits the traffic reports to the subscriber units.

14. A traffic reporting system for compiling and distributing traffic reports, comprising:

a satellite for taking and transmitting images;

a ground station for receiving and analyzing the images, for comparing the images to previously stored images to determine a percentage of traffic congestion and for compiling and transmitting the traffic reports from the analyzing and comparing; and

a plurality of subscriber units for receiving the traffic reports.

15. A traffic reporting system as recited in claim 14, wherein the satellite comprises:

a camera for taking the images;

memory coupled to the camera for storing the images; and

a transceiver coupled to the memory for transmitting the images.

16. A traffic reporting system as recited in claim 14, wherein the ground station comprises:

a transceiver for receiving the images and transmitting the traffic reports;

memory for storing the images and the traffic reports; and

a monitor for displaying the images.

17. A traffic reporting system as recited in claim 16, wherein the ground station further comprises a processor for executing an image processing algorithm to determine traffic congestion used for compiling the traffic reports.

18. A traffic reporting system as recited in claim 14, wherein each of the subscriber units comprise:

a transceiver for receiving the traffic reports;

a memory for storing the traffic reports; and

a monitor for displaying the traffic reports.

19. A ground station comprising:

a transceiver for receiving images taken by a satellite and transmitting traffic reports;

a processor coupled to the transceiver for executing an image processing algorithm to analyze the images, for comparing the images to previously stored images to determine a percentage of traffic congestion and for compiling the traffic reports;

memory coupled to the processor for storing the images and the traffic reports; and

a monitor for displaying the images and the traffic reports.

20. A subscriber unit comprising:

a transceiver for receiving traffic reports compiled, at least in part, by analyzing images taken by a satellite to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

a memory for storing the traffic reports; and

a monitor for displaying the traffic reports into an alphabetized list of streets, each of the streets having a color-coded scheme representing a degree of congestion.

21. A subscriber unit recited in claim 20, further comprising a processor coupled to the memory for determining best routes based on the traffic reports and selected origination and destination points.

22. A subscriber unit comprising:

a transceiver for receiving traffic reports compiled, at least in part, by analyzing images taken by a satellite to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

a memory for storing the traffic reports; and

a monitor for displaying the traffic reports into an alphabetized list of streets, each of the streets having a bar graph representing a degree of congestion.

23. A subscriber unit comprising:

a transceiver for receiving traffic reports compiled, at least in part, by analyzing images taken by a satellite to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

a memory for storing the traffic reports; and

a monitor for displaying the traffic reports into an alphabetized list of streets, each of the streets having a graphical representation of a degree of congestion.

24. A subscriber unit comprising:

a transceiver for receiving traffic reports compiled, at least in part, by analyzing images taken by a satellite to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

means for selecting an origination point and a destination point; and

a monitor for displaying at least one recommended route where traffic is less congested.

25. A subscriber unit recited in claim 24, wherein the monitor further comprises means for displaying an approximate travel time on each of the at least one recommended route.

26. A subscriber unit comprising:

a transceiver for receiving traffic reports compiled, at least in part, by analyzing images taken by a satellite to determine traffic congestion and comparing the images to previously stored images to determine a percentage of traffic congestion;

means for selecting at least one street; and

a monitor for displaying a current traffic condition on the selected at least one street and whether to avoid any of the at least one street.