Methods and devices for mitigating ESD events

• US 8,994,395 B2
• Filed: 10/21/2009
• Issued: 03/31/2015
• Est. Priority Date: 10/27/2008
• Status: Expired due to Fees

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: Guthrie, Brian, Macrae, Allan, Lawrie, Keith, Faulkner, Allan, Tan, Jia Yian, Lee, Chin Wee
• Primary Examiner(s): Nguyen, Tung X
• Application Number:
  US13/126,445
• Publication Number:
  US 20110210951A1
• Time in Patent Office: 1,987 Days
• Field of Search: 324/760.01, 345/87, 345/204
• US Class Current: 324/760.01
• CPC Class Codes: G01N 33/48792 Data management, e.g. communication with processing unit for in vivo diagnostics A61B5/0002; transmission systems for measured values G08C
• CPC Class Codes: G09G 2330/08 Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

Various embodiments are described and illustrated for mitigating a potential system or screen freeze during an electrostatic discharge.

Claims

1. A method of operating a test meter, the method comprising:

displaying a screen image on a display of the test meter;

saving the screen image to a memory;

monitoring electrical surges at the display;

detecting a magnitude of an electrical surge that is not within a predetermined range; and

refreshing the display to have the saved screen image when the magnitude of the electrical surge is not within the predetermined range.

2. The method of claim 1, in which the display comprises a liquid crystal display.

3. The method of claim 1, in which the electrical surge comprises an electrostatic discharge.

4. The method of claim 1, in which the electrical surge attenuates a voltage applied to the display.

5. The method of claim 1, in which the electrical surge increases a voltage applied to the display.

6. The method of claim 1, in which the refreshing comprises re-initializing the display.

7. The method of claim 1, in which the monitoring comprises a comparator circuit.

8. The method of claim 7, in which the comparator circuit triggers a microprocessor to refresh the display.

9. The method of claim 1, in which the monitoring comprises a circuit that includes a microprocessor connected to an analog-to-digital converter, the circuit configured to monitor electrical surges.

10. The method of claim 7, in which the comparator circuit is electrically connected to the display and a microprocessor of the test meter.

11. The method of claim 10, in which the comparator circuit is electrically connected to a voltage boost of the display and a microprocessor of the test meter.

12. The method of claim 11, in which the predetermined range comprises a lower limit and an upper limit, the lower limit being based on a reference voltage that is fed into a positive input of an operational amplifier of the comparator circuit and the upper is limit is infinity.

13. The method of claim 11, in which the predetermined range comprises a lower limit and an upper limit, the lower limit being based on a reference voltage that is fed into a positive input of an operational amplifier of the comparator circuit and the upper is limit is based on an upper specification value of the voltage boost.

14. The method of claim 12, in which the lower limit is less than about 10 Volts.

15. The method of claim 12 or claim 13, in which the lower limit is less than about 10 Volts and the upper limit is greater than about 12 Volts.

16. The method of claim 1 further comprising:

coupling a test strip to the test meter;

applying a sample to the test strip; and

measuring a concentration of the sample.

17. The method of claim 16, in which the measuring comprises a physical transformation of glucose into an oxidized form.

18. A method of operating a docking station, the method comprising:

coupling a test meter to the docking station;

displaying a screen image on a display of the docking station;

saving the screen image to a memory;

monitoring electrical surges at the display;

detecting a magnitude of an electrical surge that is not within a predetermined range; and

refreshing the display to have the saved screen image when the magnitude of the electrical surge is not within the predetermined range.

19. The method of claim 18, in which the display comprises a liquid crystal display.

20. The method of claim 18, in which the electrical surge comprises an electrostatic discharge.

21. The method of claim 18, in which the electrical surge attenuates a voltage applied to the display.

22. The method of claim 18, in which the electrical surge increases a voltage applied to the display.

23. The method of claim 18, in which the refreshing comprises re-initializing the display.

24. The method of claim 18, in which the monitoring comprises a comparator circuit.

25. The method of claim 18, in which the comparator circuit triggers a microprocessor to refresh the display.

26. The method of claim 18, in which the monitoring comprises a circuit that includes a microprocessor connected to an analog-to-digital converter, the circuit configured to monitor electrical surges.

27. The method of claim 24, in which the comparator circuit is electrically connected to the display and a microprocessor of the docking station.