Method and system for selectively recording system information

• US 7,093,070 B2
• Filed: 07/01/2003
• Issued: 08/15/2006
• Est. Priority Date: 07/01/2003
• Status: Active Grant

• Current Assignee: L3 Technologies, Inc. (L3Harris Technologies, Inc.)
• Original Assignee: Aviation Communication and Surveillance Systems LLC (L3Harris Technologies, Inc.)
• Inventors: Rowlan, Stacey R.
• Primary Examiner(s): Elmore, Stephen C.
• Application Number:
  US10/612,367
• Publication Number:
  US 20050005065A1
• Time in Patent Office: 1,141 Days
• Field of Search: 711/115, 711/103, 711/100, 711/221, 340/3.41, 701/301, 701/35, 702/187, 342/29, 73/17.8
• US Class Current: 711/115
• CPC Class Codes: G01C 23/00 Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
• CPC Class Codes: G01C 5/005 altimeters for aircraft G01C5/02, G01C5/06 take precedence
• CPC Class Codes: G07C 5/0858 wherein the data carrier is removable

Abstract

A method and apparatus for recording data concerning a system is provided. The apparatus comprises a memory card, such as a COMPACTFLASH card, and a processor unit, such as a T²CAS processor unit. The memory card includes a supplemental file that contains instructions as to what data is to be recorded and when the recording should start and stop. To conserve space the supplemental file is written as a sequence of hexadecimal characters whose position in the sequence and binary bit value indicates which data is to be recorded and when. A lookup table can be used to interpret the supplemental file. The processor unit includes or is coupled to a memory card reader/writer.

Claims

1. An apparatus for recording data about a system comprising:

a memory card comprising a supplemental file and a file storage section;

a processor unit operable to read from and write to the memory card;

wherein the supplemental file of the memory card is read by the processor unit, the supplemental file instructing the processor unit what data to save in the file storage section; and

wherein the supplemental file contains instructions that causes the processor unit to start and stop recording information when certain defined conditions are met.

2. The apparatus of claim 1 wherein the supplemental file of the memory card contains a sequence of hexadecimal characters, the position and bit value of the hexadecimal characters for use in determining information to record.

3. The apparatus of claim 2 wherein a table is used to define the relationship between the sequence of hexadecimal characters and the data to be recorded.

4. The apparatus of claim 1 wherein the certain defined conditions include a predefined aircraft altitude.

5. The apparatus of claim 1 wherein the memory card is removeably inserted into a slot containing a memory card reader/writer located on the processor unit.

6. The apparatus of claim 1 wherein the memory card is a COMPACTFLASH card.

7. The apparatus of claim 1 wherein the supplemental file contains instructions to change the recording rate.

8. The apparatus of claim 1 wherein the supplemental file contains instructions indicating the data from which inputs and outputs of processor units are to be recorded.

9. The apparatus of claim 1 wherein the memory card is a solid-state memory card.

10. The apparatus of claim 1 wherein the supplemental file is blank and a set of default parameters are saved to the memory card.

11. The apparatus of claim 10 wherein the set of default parameters are stored in an aircraft specific database.

12. A memory card for storing test data comprising:

a supplemental file section storing a supplemental file having instructions delineating the data to be recorded;

a file storage area for storing data based on the instructions in the supplemental file; and

wherein the supplemental file contains instructions for starting and stopping recording data when certain predefined conditions are met.

13. The memory card of claim 12, wherein the supplemental file comprises a plurality of hexadecimal characters, the position and bit value of the hexadecimal character for use in determining the data to be recorded.

14. The memory card of claim 13 wherein a table is used to define the relationship between the sequence of hexadecimal characters and the data to be recorded.

15. The memory card of claim 12 wherein the memory card is a solid-state memory card.

16. The memory card of claim 15 wherein the memory card is a COMPACTFLASH card.

17. The memory card of claim 12 wherein the supplemental file contains instructions for changing the recording rate.

18. The memory card of claim 12 wherein the supplemental file contains instructions for overwriting the data stored in the file storage area.

19. The memory card of claim 12 further comprising a header section having a configuration file that indicates if the supplemental file is present.

20. The memory card of claim 12 wherein the memory card is removeably insertable into a slot on a processor unit.

21. The memory card of claim 12 wherein the memory card is for use in an aircraft.

22. A method for recording data concerning a system comprising:

storing a supplemental file on a memory device, the supplemental file containing instructions indicating the data to record;

coupling the memory device to a processor unit;

reading the supplemental file;

storing the data to the memory device; and

wherein the step of storing a supplemental file further comprises storing a supplemental file containing instructions to start and stop recording data when certain defined conditions are met.

23. The method of claim 22 wherein the step of storing a supplemental file further comprises storing a supplemental file comprises a plurality of hexadecimal characters, the position and bit value of the hexadecimal character for use in determining parameters to be recorded.

24. The method of claim 23 further comprising using a lookup table in conjunction with the supplemental file to determine the data to be recorded.

25. The method of claim 22 wherein the defined condition is a predefined aircraft altitude.

26. The method of claim 22 wherein the step of coupling the memory device further comprises removeably inserting the memory device into a slot located on the processor unit.

27. The method of claim 22 wherein the memory device is a COMPACTFLASH card.

28. The method of claim 22 wherein the step of storing a supplemental file further comprises storing a supplemental file containing instructions to change the recording rate.

29. The method of claim 22 wherein the memory card is a solid-state memory card.

30. An apparatus for recording data about a system comprising:

a memory card comprising a supplemental file and a file storage section;

a processor unit operable to read from and write to the memory card;

wherein the supplemental file of the memory card is read by the processor unit, the supplemental file instructing the processor unit what data to save in the file storage section; and

wherein the supplemental file contains instructions to change the recording rate.

31. A memory card for storing test data comprising:

a supplemental file section storing a supplemental file having instructions delineating the data to be recorded;

a file storage area for storing data based on the instructions in the supplemental file; and

wherein the supplemental file contains instructions for changing the recording rate.

32. A memory card for storing test data comprising:

a supplemental file section storing a supplemental file having instructions delineating the data to be recorded;

a file storage area for storing data based on the instructions in the supplemental file; and

wherein the supplemental file contains instructions for overwriting the data stored in the file storage area.

33. A memory card for storing test data comprising:

a supplemental file section storing a supplemental file having instructions delineating the data to be recorded;

a file storage area for storing data based on the instructions in the supplemental file; and

a header section having a configuration file that indicates if the supplemental file is present.

34. A method for recording data concerning a system comprising:

storing a supplemental file on a memory device, the supplemental file containing instructions indicating the data to record;

coupling the memory device to a processor unit;

reading the supplemental file;

storing the data to the memory device;

using a lookup table in conjunction with the supplemental file to determine the data to be recorded; and

wherein storing the supplemental file further comprises storing the supplemental file comprising a plurality of hexadecimal characters, the position and bit value of the hexadecimal characters determining the parameters to be recorded.

35. A method for recording data concerning a system comprising:

storing a supplemental file on a memory device, the supplemental file containing instructions indicating the data to record;

coupling the memory device to a processor unit;

reading the supplemental file;

storing the data to the memory device; and

wherein storing the supplemental file further comprises storing the supplemental file containing instructions to change the recording rate.