Resistive loop excitation and readout for touch point detection and generation of corresponding control signals

• US 8,704,758 B1
• Filed: 11/11/2009
• Issued: 04/22/2014
• Est. Priority Date: 11/17/2008
• Status: Active Grant

• Current Assignee: Iron Will Innovations Canada, Inc. (Iron Will Innovations, Inc.)
• Original Assignee: Iron Will Innovations Canada, Inc. (Iron Will Innovations, Inc.)
• Inventors: Figley, Curtis B., Hunt, Darin, Chichak, Andrei, Baier, Brent
• Primary Examiner(s): Davis, David D
• Application Number:
  US12/590,784
• Time in Patent Office: 1,623 Days
• Field of Search: None
• US Class Current: 345/156
• CPC Class Codes: G06F 3/014 Hand-worn input/output arrangements, e.g. data gloves
• CPC Class Codes: G06F 3/0383 Signal control means within the pointing device

Abstract

A means and method for enabling contact or touch point location detection to be implemented on a particular garment. This means and method simplifies the design of the garment by reducing the number of conductors required to interconnect the various touch points and signal processing circuitry; it provides a way to dynamically reposition or resize the effective touch point target regions; and it provides for new control capabilities by optionally allowing continuously variable user input control.

Claims

1. A system for generating electronic data and/or control signals comprising:

(a) a curvilinear conductive element attached to a garment adapted to be worn by a user,

(b) an electrical excitation source electrically connected to the curvilinear element to apply a base data/signal to the curvilinear element;

(c) a sensing electrode, said sensing electrode being capable of electrically contacting the curvilinear conductive element at various locations along the length of the curvilinear element, the ‘

curvilinear element having electrical characteristics such that when contacted by the sensing electrode a circuit will be formed that has electrical characteristics unique to the portion of the curvilinear element associated with the contact point”

between the “

sensing electrode and the curvilinear element located adjacent to the contact point so that a data/signal generated from the base data/signal via the portion is unique to that portion; and

(d) circuitry connected to the sensing electrode and to the curvilinear element which receives a data/signal via the portion of the curvilinear element and which uses the unique data/signal associated with that portion to interpret the location of the sensing electrode with respect to the curvilinear element and transmitting data/signals responsive to the presence and location of the electrical contact between the sensing electrode and the curvilinear element.

2. The system defined in claim 1 wherein the sensing electrode is attached to the same garment as the curvilinear conductive element.

3. The system defined in claim 1 wherein the garment is a glove.

4. The system defined in claim 1 wherein the system further comprises memory which is adapted to be programmed with a configuration map that associates electrical contact locations along the length of the curvilinear conductive element to particular data or control signals desired to be output by the system.

5. The system defined in claim 1 having a programmatically defined region along the length of the curvilinear conductive element where a signal from the system will produce a fixed data/signal when the sensing electrode electrically contacts any location along that given region and where such region is defined by range of measurement values associated with the programmatically defined region.

6. The system defined in claim 1 further including a second curvilinear conductive element.

7. The system defined in claim 6 wherein the curvilinear conductive elements are connected to be excited individually or in groups.

8. The system defined in claim 1 wherein the curvilinear conductive element includes a spring wound resistive metal wire.

9. The system defined in claim 1 wherein the curvilinear conductive element is partially formed from conductive filler loaded elastomer compounds.

10. The system defined in claim 1 wherein the curvilinear conductive element is partially formed by conductive thread which is adapted to be sewn or embroidered into the garment.

11. The system defined in claim 1 wherein the curvilinear conductive element is partially formed by conductive ink printed onto the garment.

12. The system defined in claim 1 wherein the sensing electrode is configured as a long conductor attached to the same garment as the curvilinear conductive element and the sensing conductor runs parallel to the curvilinear conductive element along a substantial portion of the length of the curvilinear conductive element.

13. The system defined in claim 12 further including a bridge conductive element which is adapted to be moved to be connected to the curvilinear conductive element and to the long sensing conductor at a desired location along the curvilinear element.

14. The system defined in claim 1 wherein the circuitry connected to the sensing electrode and to the curvilinear element includes circuitry to generate data/signals that vary with sufficient range and resolution to simulate continuous or quasi-continuous behavior as the location where the sensing electrode electrically contacts the curvilinear conductive element is varied.

15. The system defined in claim 1 wherein the curvilinear conductive element includes branches.

16. The system defined in claim 1 further including pads attached to the curvilinear conductive element which are larger than the curvilinear conductive element located adjacent to the pads.

17. The system defined in claim 1 further including a data/signal generator which receives a unique data/signal that is indicative of the location along the length of the curvilinear conductive element where the sensing electrode makes contact with the curvilinear element and generates a data/control signal which is a sequence of data/control characters.

18. A system for generating electronic data and/or control signals comprising:

(a) a curvilinear conductive element attached to a garment, said curvilinear conductive element having a first end and a second end and extending for a length along a curvilinear path between its first and second ends, said curvilinear element having various exposed locations along its length such that the curvilinear element can be electrically contacted at the exposed locations;

(b) an electronic excitation source, said electronic excitation source being electrically connected to the first and second ends of the curvilinear conductive element and generating a differential electrical signal along the length of the curvilinear conductive element;

(c) a sensing electrode that may electrically co{tilde over ( )}tact an exposed location along the length of the curvilinear element, thereby conducting a first electrical signal from the exposed location, the curvilinear element having electrical characteristics such that when contacted by the sensing electrode a circuit will be formed that has electrical characteristics unique to the portion of the curvilinear element associated with the contact point between the sensing electrode and the curvilinear element located adjacent to the contact point so that a signal generated from the differential signal via the portion is unique to that portion;

(d) signal processing circuits that are connected to the sensing electrode and receive said first electrical signal therefrom and that generate a signal indicating the location along the length of the curvilinear conductive element where the sensing electrode electrically contacts the curvilinear conductive element.

19. The system defined in claim 18 wherein the signal processing circuits include two subcircuits with a first sub-circuit providing control of measurement functions of the differential signal and a second sub-circuit translating the measurement functions into digital data.

20. The system defined in claim 19 wherein the first signal processing sub-circuit and the second signal processing sub-circuit are electrically isolated from one another.

21. The system defined in claim 19 wherein the electronic excitation source and the first signal processing sub-circuit of each signal processing circuit are attached to the same garment as the curvilinear conductive element.

22. The system defined in claim 18 wherein the electronic excitation source and the signal processing circuits are attached to the same garment as the curvilinear conductive element.

23. The system defined in claim 18 wherein the electronic excitation source provides balanced excitation.

24. The system defined in claim 18 wherein the electronic excitation source and the curvilinear conductive element are adapted to produce a voltage gradient along the length of the curvilinear conductive element when the differential electric signal is applied to the curvilinear conductive element.

25. The system defined in claim 18 wherein the curvilinear conductive element has a plurality of branches.

26. A system for generating electronic data and/or control signals comprising:

(a) a curvilinear conductive element attached to a garment, said curvilinear conductive element having a first end and a second end and extending for a length along a curvilinear path between its first and second ends, said curvilinear element having various exposed locations along its length such that electrical contact with the curvilinear conductive element can be effected at the exposed locations;

(b) an electronic excitation source electrically connected to a sensing electrode and adapted to generate a signal;

(c) a sensing electrode that is adapted to electrically contact the curvilinear element at an exposed location along the length of the curvilinear element, thereby conducting an electrical signal from the electronic excitation source to the exposed location;

(d) a first electrical signal being conducted to the first end of the curvilinear element and a second electrical signal being conducted to the second end of the curvilinear element when the sensing electrode electrically contacts an exposed location along the length of the curvilinear element; and

(e) signal processing circuits that receive electrical signals from the curvilinear element and generate a signal in response thereto indicating the location along the length of the curvilinear conductive element where the sensing electrode electrically contacts the curvilinear conductive element.

27. A system for generating data and/or control signals comprising:

(a) a garment adapted to be worn by a user;

(b) a resistive loop located in the garment, the resistive loop being one-piece and having a plurality of portions which are positioned with respect to the garment to be exposed for electrical contact;

(c) an electrical contact element located in position to be manipulated by the user to contact the resistive loop at an exposed portion to define an electrical circuit, the electrical circuit thus defined being unique to the portion of the resistive loop associated with the exposed portion being contacted by the electrical contact element, the resistive loop having a plurality of exposed portions whereby a plurality of different electrical circuits are associated with the resistive loop;

(d) a data/signal processing circuit electrically connected to the resistive loop and to the contact element, the data/signal processing circuit including a data/signal generator to generate a data/signal to the resistive loop, the data/signal received by the resistive loop being applied to an electrical circuit defined by the resistive loop and the electrical contact element to be modified thereby to produce a modified data/signal, each electrical circuit being different from other electrical circuits whereby the modified data/signal associated with each electrical circuit is unique to that circuit, the data/signal processing circuit further including a data/signal receiver which is connected to the data/signal generator via an electrical circuit defined by the resistive loop and the electrical contact element to receive a modified data/signal from an electrical circuit defined by the resistive loop and the electrical contact.

28. The system defined in claim 27 wherein the exposed portions of the resistive loop are spaced apart so that the data/signal associated with each exposed portion is location dependent.

29. The system defined in claim 27 wherein the resistive element has a first end and a second end and extends along a curvilinear path between the first end and the second end, the data/signal generator being connected to the first and second ends of the curvilinear resistive loop, the base signal being a differential electrical signal.

30. The system defined in claim 27 further including an electronic excitation source electrically connected to the resistive loop to establish a base potential on the resistive loop, the base potential being applied via the resistive loop to each exposed portion and to the electrical circuit associated therewith when the electrical contact element is in contact therewith, each electrical circuit being different from other electrical circuits associated with the resistive loop to have electrical characteristics which are unique to the exposed portion of the resistive loop associated therewith in conjunction with the electrical contact element whereby a plurality of different electrical circuits are associated with the resistive loop.

31. A system for generating electronic data and/or control signals comprising:

a curvilinear conductive element attached to a garment;

a sensing electrode, said sensing electrode being capable of electrically contacting the curvilinear conductive element at various locations along the length of the curvilinear element;

the system interpreting the location of said electrical contact and transmitting signals responsive to the presence and location of said electrical contact; and

the electrical contact to the curvilinear conductive element resulting from an action on the part of the intended user of the system.

32. A system for providing user input to an electronic device comprising:

a source of electronic signals;

a signal processing system;

a garment which is adapted to be worn by a user;

a curvilinear conductive element mounted on the garment, the curvilinear element being continuous and one-piece and extending across a region of the garment in a one-piece uninterrupted manner and defining an uninterrupted continuum of touch points on the single, one-piece curvilinear element, the curvilinear conductive element being electrically connected to the source of electronic signals to receive source signals therefrom;

a sensing electrode which is spaced apart from the curvilinear conductive element and which combines with the curvilinear element when in contact therewith to generate a location based signal which is unique to the location of contact between the sensing electrode and the curvilinear conductive element whereby a continuum of location-based signals are available via the continuous curvilinear conductive element and the sensing electrode; and

the sensing electrode being electrically connected to the signal processing system to send location-based signals thereto for use thereby.

33. The system defined in claim 32 wherein the sensing electrode is mounted on the garment and is spaced apart from the sensing element.

34. The system defined in claim 32 wherein one or more portions of the curvilinear conductive element are occluded by an insulating barrier in a manner that prevents contact between the sensing electrode and the curvilinear conductive element in the occluded regions.