Retrofit touch sensor controls

• US 20070024591A1
• Filed: 07/27/2005
• Published: 02/01/2007
• Est. Priority Date: 07/27/2005
• Status: Abandoned Application

• Current Assignee: Tyco Electronics Corporation (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: Tyco Electronics Corporation (TE Connectivity Ltd. (United Kingdom))
• Inventors: Fry, Charles
• Application Number:
  US11/190,327
• Publication Number:
  US 20070024591A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: H03K 17/9618 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2217/94052 with evaluation of actuation pattern or sequence, e.g. tapping

Abstract

A touch controller for a touch sensitive control system having a control interface panel and a plurality of touch detecting elements is configured to accept a first number of input signals via corresponding input connections; monitor each of said touch detecting elements individually to detect user touch activation thereof; and output signals corresponding to detected touches, wherein a number of output signals is less than a number of touch detecting elements in the interface.

Claims

1. A touch controller for a touch sensitive control system having a control interface panel and a plurality of touch detecting elements, said controller configured to

accept a first number of input signals via corresponding input connections;

monitor each of said touch detecting elements individually to detect user touch activation thereof; and

output signals corresponding to detected touches, wherein a number of output signals is less than a number of touch detecting elements in the interface.

2. A touch controller in accordance with claim 1 wherein said controller is configured to accept a different number of input signals than corresponding output signals for detected touches.

3. A touch controller in accordance with claim 1 wherein said controller is configured to output signals corresponding to simultaneous activation of multiple touch detecting elements.

4. A touch controller in accordance with claim 1 wherein said controller is configured to emulate an output control scheme of a membrane switch assembly.

5. A touch controller in accordance with claim 1 wherein the touch sensitive control system includes a device controller, the touch controller configured to receive input signals from the device controller, and transmit output signals to the device controller based upon detected touch activations of the touch detecting elements.

6. A touch controller in accordance with claim 1 wherein said input signals are low strobes.

7. A touch controller in accordance with claim 1 wherein said touch detecting elements and said touch controller simulate switching elements electrically connected in a cross matrix, the matrix including a number of output connections that is different from the number of touch detecting elements.

8. A touch controller in accordance with claim 1 wherein the touch controller includes a first number of input connections, a second number of output connections, and monitors a third number of touch detecting elements, said first number and said second number each being different from said third number.

9. A control interface for a device having a device controller, said control interface comprising:

an interface panel defining a plurality of touch sensitive areas;

touch sensitive elements associated with each respective one of said touch sensitive areas; and

a touch controller individually monitoring each of the touch sensitive elements and outputting control signals to the device controller, wherein the touch controller emulates the control output scheme of a membrane switch.

10. A control interface in accordance with claim 9 wherein a number of output signals is less than a number of touch sensitive elements in the interface.

11. A control interface in accordance with claim 9 wherein said touch controller has a different number of input connections than output connections.

12. A control interface in accordance with claim 9 wherein said touch controller is configured to output signals corresponding to simultaneous activation of multiple touch detecting elements.

13. A control interface in accordance with claim 9 wherein said touch detecting elements and said touch controller simulate switching elements electrically connected in a cross matrix, the matrix including a number of input connections that is different from the number of touch detecting elements.

14. A control interface in accordance with claim 9 wherein the touch controller is configured to receive input signals from the device controller, and transmit output signals to the device controller based upon detected touch activations of the touch sensitive elements, the touch activations of the touch sensitive elements being independent of the input and output signals.

15. A control interface in accordance with claim 9 wherein said input signals are low strobes.

16. A control interface in accordance with claim 9 wherein said touch detecting elements and said touch controller simulate switching elements electrically connected in a cross matrix, the matrix including a number of output connections that is different from the number of touch detecting elements.

17. A control interface in accordance with claim 9 wherein the touch controller includes a first number of inputs, a second number of outputs, and monitors a third number of touch detecting numbers, said first number and said second number each being different from said third number.

18. A touch based control system comprising

a device having a device controller and a number of components operatively connected thereto;

and

a control interface communicating with the device controller, said control interface comprising;

an interface panel defining a plurality of touch sensitive areas;

touch sensitive elements associated with each respective one of said touch sensitive areas; and

a touch controller individually monitoring each of the touch sensitive elements, and outputting control signals to the device controller in response to single touch detection activation of one of the touch sensitive elements and simultaneous touch detection of more than one of the touch sensitive elements.

19. A control system in accordance with claim 18 wherein said touch controller emulates an output control scheme of a membrane switch assembly.

20. A control system in accordance with claim 18 wherein said touch controller receives control input signals from the device controller to a first number of input connections, monitors a second number of touch sensitive elements, and outputs signals to the device control at a third number of connections, wherein said first number is different from said second number and said third number is different from said first number.