Displaying lightning strikes

• US 6,405,133 B1
• Filed: 07/28/1999
• Issued: 06/11/2002
• Est. Priority Date: 07/30/1998
• Status: Expired due to Fees

• Current Assignee: Avidyne Corporation
• Original Assignee: Avidyne Corporation
• Inventors: Barber, Frederic D., Schwinn, Daniel J., Bedrosian, David P., Cannaday, Theodore H.
• Primary Examiner(s): McElheny, Jr., Donald E.
• Application Number:
  US09/362,772
• Time in Patent Office: 1,049 Days
• Field of Search: 702/4, 702/3, 342/26, 342/460, 706/931, 340/600, 340/601, 340/602, 324/72, 345/440, 345/589, 345/473
• US Class Current: 702/4
• CPC Class Codes: G06F 3/0481 based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance

Abstract

Lightning strikes are displayed as uniformly-structured (e.g., gaussian) kernels that decay in size and intensity over time. The lightning strikes may be displayed as they occur, or stored for later display. Overlapping areas of the kernels are displayed in different colors than corresponding non-overlapping areas. A color (or colors) displayed in an overlapping area is a function of the number of kernels that overlap in that area.

Claims

1. A method comprising displaying a lightning strike as a uniformly-structured kernel that decays over time, the uniformly-structured kernel having an inner portion and an outer portion, the inner portion having a higher amplitude than the outer portion, the amplitudes of the inner portion and the outer portion decreasing as the uniformly-structured kernel decays.

2. The method of claim 1, wherein the uniformly-structured kernel comprises a gaussian kernel.

3. The method of claim 1, further comprising:

detecting the lightning strike; and

determining a location of the lightning strike;

wherein the lightning strike is displayed based on the location of the lightning strike.

4. The method of claim 3, further comprising displaying a location of an aircraft relative to the lightning strike.

5. The method of claim 1, further comprising displaying two or more lightning strikes as uniformly-structured kernels that decay over time;

wherein overlapping areas of uniformly-structured kernels for the two or more lightning strikes are displayed in one or more different colors than corresponding non-overlapping areas of uniformly-structured kernels.

6. The method of claim 5, wherein a color of an overlapping area is a function of a number of uniformly-structured kernels that overlap in that area.

7. The method of claim 6, wherein different colors for overlapping areas are obtained by summing pixel values in the overlapping areas;

and

wherein different pixel values map to different colors on a color continuum.

8. The method of claim 1, wherein decay of the uniformly-structured kernel is shown as a decrease in size of the uniformly-structured kernel over time.

9. A method of displaying lightning strikes, comprising:

storing information relating to a lightning strike;

retrieving the information; and

displaying the lightning strike, based on the retrieved information, as a uniformly-structured kernel that decays over time, the uniformly-structured kernel having an inner portion and an outer portion, the inner portion having a higher amplitude than the outer portion, the amplitudes of the inner portion and the outer portion decreasing as the uniformly-structured kernel decays.

10. The method of claim 9, wherein the information includes a record of lightning strikes that occurred over a period of time, each lightning strike corresponding to a uniformly-structured kernel that decays over time;

and

further comprising controlling a rate at which the record of lightning strikes is displayed.

11. The method of claim 9, further comprising:

detecting the lightning strike; and

determining a location of the lightning strike;

wherein the information relating to the lightning strike includes a location of the lighting strike.

12. The method of claim 9, wherein the information relating to the lightning strike includes a time that the lightning strike occurred.

13. The method of claim 9, further comprising:

determining a current location of an aircraft relative to the lightning strike; and

displaying the current location of the aircraft relative to the lightning strike.

40. The method of claim 9, further comprising displaying a warning regarding current lightning strikes while the retrieved lightning strike information is being displayed.

14. An apparatus comprising:

a display screen which displays images;

a memory which stores a computer program; and

a processor which executes the computer program to display, on the display screen, a lightning strike as a uniformly-structured kernel that decays over time, the uniformly-structured kernel having an inner portion and an outer portion, the inner portion having a higher amplitude than the outer portion, the amplitudes of the inner portion and the outer portion decreasing as the uniformly-structured kernel decays.

15. The apparatus of claim 14, wherein the uniformly-structured kernel comprises a gaussian kernel.

16. The apparatus of claim 14, further comprising a storm sensor which:

detects the lightning strike; and

determines a location of the lightning strike;

wherein the lightning strike is displayed based on the location of the lightning strike.

17. The apparatus of claim 16, wherein the processor executes the computer program to display a location of an aircraft relative to the lightning strike.

18. The apparatus of claim 14, wherein:

the processor executes the computer program to display two or more lightning strikes as uniformly-structured kernels that decay over time; and

overlapping areas of uniformly-structured kernels for the two or more lightning strikes are displayed in one or more different colors than corresponding non-overlapping areas of uniformly-structured kernels.

19. The apparatus of claim 18, wherein a color of an overlapping area is a function of a number of uniformly-structured kernels that overlap in that area.

20. The apparatus of claim 19, wherein different colors for overlapping areas are obtained by summing pixel values in the overlapping areas;

and

wherein different pixel values map to different colors on a color continuum.

21. The apparatus of claim 14, wherein decay of the uniformly-structured kernel is shown as a decrease in size of the uniformly-structured kernel over time.

22. An apparatus for displaying lightning strikes, comprising:

a display screen which displays images;

one or more memories which store a computer program and information relating to a lightning strike; and

a processor which executes the computer program so as (i) to retrieve the information, and (ii) to display the lightning strike on the display screen based on the information, the lightning strike being displayed as a uniformly-structured kernel that decays over time, the uniformly-structured kernel having an inner portion and an outer portion, the inner portion having a higher amplitude than the outer portion, the amplitudes of the inner portion and the outer portion decreasing as the uniformly-structured kernel decays.

23. The apparatus of claim 22, wherein:

the information includes a record of lightning strikes that occurred over a period of time, each lightning strike corresponding to a uniformly-structured kernel that decays over time; and

the processor executes the computer program to control a rate at which the record of lightning strikes is displayed.

24. The apparatus of claim 22, further comprising a storm sensor which:

detects the lightning strike; and

determines a location of the lightning strike;

wherein the information relating to the lightning strike includes a location of the lighting strike.

25. The apparatus of claim 22, wherein the information relating to the lightning strike includes a time that the lightning strike occurred.

26. The apparatus of claim 25, wherein the processor (i) determines a current location of an aircraft relative to the lightning strike, and (ii) displays the current location of the aircraft relative to the lightning strike.

41. The apparatus of claim 22, wherein the processor displays a warning regarding current lightning strikes while the retrieved lightning strike information is being displayed.

27. A computer program stored on a computer-readable medium, the computer program comprising code to display a lightning strike as a uniformly-structured kernel that decays over time, the uniformly-structured kernel having an inner portion and an outer portion, the inner portion having a higher amplitude than the outer portion, the amplitudes of the inner portion and the outer portion decreasing as the uniformly-structured kernel decays.

28. The computer program of claim 27, wherein the uniformly-structured kernel comprises a gaussian kernel.

29. The computer program of claim 27, further comprising code to receive an indication of the lightning strike and a location of the lightning strike;

wherein the lightning strike is displayed based on the location of the lightning strike.

30. The computer program of claim 29, further comprising code to display a location of an aircraft relative to the lightning strike.

31. The computer program of claim 27, further comprising code to display two or more lightning strikes as uniformly-structured kernels that decay over time;

wherein overlapping areas of uniformly-structured kernels for the two or more lightning strikes are displayed in one or more different colors than corresponding non-overlapping areas of uniformly-structured kernels.

32. The computer program of claim 31, wherein a color of an overlapping area is a function of a number of uniformly-structured kernels that overlap in that area.

33. The computer program of claim 32, wherein different colors for overlapping areas are obtained by summing pixel values in the overlapping areas;

and

wherein different pixel values map to different colors on a color continuum.

34. The computer program of claim 27, wherein decay of the uniformly-structured kernel is shown as a decrease in size of the uniformly-structured kernel over time.

38. The computer program of claim 29 wherein the information relating to the lightning strike includes a time that the lightning strike occurred.

35. A computer program stored on a computer-readable medium to display lightning strikes, the computer program comprising:

code to store information relating to a lightning strike;

code to retrieve the information; and

code to display the lightning strike, based on the information, as a uniformly-structured kernel that decays over time, the uniformly-structured kernel having an inner portion and an outer portion, the inner portion having a higher amplitude than the outer portion, the amplitudes of the inner portion and the outer portion decreasing as the uniformly-structured kernel decays.

36. The computer program of claim 35, wherein the information includes a record of lightning strikes that occurred over d period of time, each lightning strike corresponding to a uniformly-structured kernel that decays over time;

and

further comprising c ode to control a rate at which the record of lightning strikes is displayed.

37. The computer program of claim 35, further comprising code to receive an indication of the lightning strike and the information relating to the lightning strike;

wherein the information relating to the lightning strike includes a location of the lighting strike.

39. The computer program of claim 35, further comprising:

code to determine a current location of an aircraft relative to the lightning strike; and

code to display the current location of the aircraft relative to the lighting strike.

42. The computer program of claim 35, further comprising code to display a warning regarding current lightning strikes while the retrieved lightning strike information is being displayed.