Vehicle accessory control interface having capactive touch switches

• US 9,046,967 B2
• Filed: 07/02/2009
• Issued: 06/02/2015
• Est. Priority Date: 07/02/2009
• Status: Active Grant

• Current Assignee: Uusi LLC (Nartron Corporation)
• Original Assignee: Uusi LLC (Nartron Corporation)
• Inventors: Newman, Todd R., Washeleski, John M.
• Primary Examiner(s): Zhou, Hong
• Application Number:
  US12/496,938
• Publication Number:
  US 20110001722A1
• Time in Patent Office: 2,161 Days
• Field of Search: 345156-184, 178 1801- 2004, 341/22, 341/33, 701/36, 715862-863
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A system for enabling an operator to control a vehicle accessory includes a control interface and a processor. The control interface has a display surface and a touch area defined by an electrically conductive layer adjacent the display surface. The conductive layer capacitively couples to an electrically conductive object upon the object touching or being in proximity with the touch area while the conductive layer is driven with an electrical charge. The processor drives the conductive layer with the electrical charge, detects the capacitive coupling of the conductive layer to the object upon the object touching or being in proximity with the touch area while the conductive layer is driven, generates a signal indicative of the object touching or being in proximity with the touch area upon detecting the capacitive coupling of the conductive layer to the object, and provides the signal to the accessory for controlling the accessory accordingly.

Claims

1. A system for enabling an operator to control an accessory of a vehicle, the system comprising:

a control interface including a display panel and a processor associated with the display panel;

the display panel including

a touch surface,

an electrically non-conductive support adjacent the touch surface,

a plurality of touch areas, each of the touch areas being defined by a single electrically conductive pad situated between the support and a portion of the touch surface, wherein the conductive pads individually capacitively couple to an electrically conductive object upon the conductive object moving into close proximity to the touch area while the conductive pad is driven with an electrical charge;

the processor being operative in a first mode in which the processor detects the capacitive coupling of the conductive pad to the electrically conductive object,

generates a signal indicative of the capacitive coupling, and

provides the signal to an accessory of a vehicle for controlling the accessory based on the capacitive coupling;

the processor being operative in a second mode in which the processor

detects capacitive coupling of a plurality of the conductive pads to an electrically conductive object,

recognizes a pattern or sequence of the coupling of the plurality of the conductive pads, and

generates a first control signal indicating a first adjustment to a feature of at least one of the vehicle accessories when the pattern or sequence has a first direction, or generates a second control signal indicating a second adjustment to the feature of the at least one vehicle accessory when the pattern or sequence has a second direction, wherein the first direction is opposite the second direction and the first adjustment is opposite the second adjustment;

the processor being operative in a third mode in which the processor

remotely communicates with a wireless electronic device, using a transceiver, associated with the processor, and

controls at least one of the vehicle accessories in accordance with an output command received from the wireless electronic device.

2. The system of claim 1, wherein at least one of the display panel and the conductive pad is optically transparent.

3. The system of claim 1, wherein the conductive pad is optically transparent and comprises one of Indium Tin Oxide and a clear conductive polymer.

4. The system of claim 1, wherein the touch surface acts as a support for attachment of the conductive pad to the portion of the display panel.

5. The system of claim 1, wherein the conductive pad is situated between the support and a portion of an internal side of the touch surface facing opposite an external side that is accessible for being approached by the conductive object.

6. The system of claim 1, wherein the display panel comprises a non-conductive material and includes at least one of glass and plastic.

7. The system of claim 1, wherein the display panel has a non-planar contour and the conductive layer has a contour corresponding to the non-planar contour of the display panel.

8. The system of claim 1, wherein each of the conductive pads is isolated from the other by an electrically non-conductive substrate.

9. The system of claim 8, wherein each of the single electrically conductive pads comprises only a single electrode.

10. The system of claim 8, wherein the processor transmits information indicative of the status of at least one of the control interface and the accessory to the wireless electronic device.

11. The system of claim 8, wherein the processor exchanges data between the control interface and the wireless electronic device.

12. The system of claim 1, wherein the processor is configured to:

detect the amount of capacitive coupling of the conductive pad to the conductive object, and

generate a signal indicative of the amount of capacitive coupling; and

wherein

the processor includes a microprocessor for receiving the signal indicative of the amount of capacitive coupling, the microprocessor providing an output command based on the amount of capacitive coupling to the accessory of the vehicle for controlling the accessory based on the amount of capacitive coupling of the conductive pad to the conductive object.

13. The system of claim 12, wherein the microprocessor determines the output command in response to a single point touch input of the conductive object on the touch area.

14. The system of claim 12, wherein the microprocessor determines the output command in response to a multipoint touch input of the conductive object on the touch area.

15. The system of claim 12, wherein the microprocessor determines the output command in response to sequential single point touch inputs of the conductive object on the touch area.

16. The system of claim 12, wherein the microprocessor determines the output command in response to sequential multipoint touch inputs of the conductive object on the touch area.

17. The system of claim 12, wherein the microprocessor determines the output command in response to a single point proximity input of the conductive object to the touch area prior to the conductive object touching the touch area.

18. The system of claim 12, wherein the microprocessor determines the output command in response to a multipoint proximity input of the conductive object to the touch area prior to the conductive object touching the touch area.

19. The system of claim 12, wherein the microprocessor determines the output command in response to sequential single point proximity inputs of the conductive object to the touch area prior to the conductive object touching the touching area.

20. The system of claim 12, wherein the microprocessor determines the output command in response to sequential multipoint proximity inputs of the conductive object to the touch area prior to the conductive object touching the touch area.

21. The system of claim 12 wherein a response of the accessory to the output command comprises at least one of audio feedback and haptic feedback.

22. The system of claim 12, wherein the processor achieves proximity detection of an electrically conductive object to the touch area by lowering a sensitivity threshold of the processor to make the touch area more sensitive to nearby electrically conductive objects.

23. The system of claim 12, wherein the processor achieves proximity detection of an electrically conductive object to the touch area by reading capacitive coupling amounts at a plurality of touch areas and summing the capacitive coupling amounts to produce a summed capacitive coupling amount.

24. The system of claim 12, wherein the control interface includes a plurality of other touch areas each defined by a single electrically conductive pad, wherein the processor achieves proximity detection of an electrically conductive object by electrically connecting the touch area with at least one of the other touch areas to make the touch area more sensitive to nearby electrically conductive objects.

25. The system of claim 12, wherein the processor transmits information indicative of the status of at least one of the control interface and the accessory to the wireless electronic device.

26. The system of claim 12, wherein the processor exchanges data between the control interface and the wireless electronic device.

27. The system of claim 12, wherein the single electrically conductive pad comprises only a single electrode.

28. The system of claim 1, wherein the single electrically conductive pad comprises only a single electrode.

29. The system of claim 1, wherein the processor transmits information indicative of the status of at least one of the control interface and the accessory to the wireless electronic device.

30. The system of claim 1, wherein the processor exchanges data between the control interface and the wireless electronic device.

31. The system of claim 1, wherein a plurality of the touch areas are grouped together and arranged in an arched layout, wherein sequential capacitive coupling with at least some of the conductive pads of the grouped touch areas imitates and analog style control.