Vehicle accessory control interface having capacitive touch switches

• US 9,740,324 B2
• Filed: 04/30/2015
• Issued: 08/22/2017
• 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:
  US14/700,731
• Publication Number:
  US 20150234531A1
• Time in Patent Office: 845 Days
• Field of Search: 345173-174, 345168, 178 1806
• 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 including a control interface including a display panel and a processor, the display panel including a touch surface, an electronically non-conductive touch surface, and a plurality of touch areas having an array of electrically conductive rows and columns, which capacitivily couples to a conductive object, moving into close proximity to one of the conductive rows and columns, while being driven with an electrical charge, and the processor detecting the capacitive coupling of the conductive row to the conductive object, generating a signal and providing the signal wirelessly to one of an accessory and remote device, based on a first movement, followed by a second movement when a pattern or sequence has been detected, remotely communicating to a wireless device using a transceiver associated with the processor, and controlling at least one of the remote accessories in accordance with an output command from the wireless device.

Claims

1. A system for enabling an operator to control an accessory from a remote device, the system comprising:

a control interface including a display panel;

the display panel including an electronically non-conductive touch surface and a plurality of touch areas, each of the touch areas being defined by a single electrically conductive pad and the touch areas forming a two-dimensional array of a plurality of electrically conductive rows and columns and each of the electrically conductive rows and columns being independent of one another, wherein the conductive pads individually capacitively couples to an electrically conductive object, moving into close proximity to at least one of the conductive rows and columns, while being driven with an electrical charge;

a single input drive and detection circuit for measuring the capacitive signal developed on each conductive pad, the input and drive detection circuit being configured to turn each conductive pad on in progression to read each of the electrically conductive rows and columns independently; and

the input drive and detection circuit including a processor detecting the capacitive coupling of the at least one of the conductive rows and columns to the conductive object, generating a signal and providing the signal wirelessly to one of an accessory and remote device, based on a first movement, followed by a second movement when a pattern or sequence has been detected, remotely communicating to a wireless device using a transceiver associated with the processor, and controlling at least one of the accessory and remote device in accordance with an output command from the wireless device.

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

3. The system of claim 1, wherein the conductive rows and columns are optically transparent and comprised of one of an 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 a conductive pad to a portion of the display panel.

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

6. The system of claim 1, wherein the processor determines the output command in response to a multipoint touch input of the conductive object on the touch area.

7. The system of claim 1, 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.

8. The system of claim 1, wherein the processor determines the output command in response to sequential single point touch inputs of the conductive object on the touch area.

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

10. A system for enabling an operator to control an accessory from a remote device, the system comprising:

a control interface including a display;

the display including a touch surface and a plurality of touch areas, each of the touch areas being defined by a single electrically conductive pad situated between a support and a portion of the touch surface and the touch areas forming a two-dimensional array of a plurality of electrically conductive rows and columns and each of the electrically conductive rows and columns being independent of one another, wherein each of the touch areas individually capacitively couples to an electrically conductive object moving into close proximity to at least one of the conductive rows and columns while being driven with an electrical charge;

a single input drive and detection circuit for measuring the capacitive signal developed on each conductive pad, said input and drive detection circuit being configured to turn each conductive pad on in progression to read each of the electrically conductive rows and columns independently; and

the input drive and detection circuit including a processor detecting the capacitive coupling of the at least one of the conductive rows and columns to the conductive object, generating a signal, providing the signal wirelessly to at least one of a plurality of accessories based on a first movement, followed by a second movement when a pattern or sequence has been detected, communicating to a wireless remote device using a transceiver associated with the processor, and controlling the least one of a plurality of accessories in accordance with an output command from the wireless remote device.

11. A system for enabling an operator to control an accessory from a remote device, the system comprising:

a control interface including a display panel;

the display panel including a touch surface and a plurality of touch areas, each of the touch areas being defined by a single electrically conductive pad and the touch areas forming a two-dimensional array of a plurality of electrically conductive rows and columns and each of the electrically conductive rows and columns being independent of one another, each of said plurality of electrically conductive rows and columns being formed by sequentially connected said touch areas, wherein each of the touch areas individually capacitively couples to an electrically conductive object moving into close proximity to at least one of the conductive rows and columns while being driven with an electrical charge;

a single input drive and detection circuit for measuring the capacitive signal developed on each conductive pad, said input and drive detection circuit being configured to turn each conductive pad on in progression to read each of the electrically conductive rows and columns independently; and

the input drive and detection circuit including a processor detecting the capacitive coupling of the at least one of the conductive rows and columns to the conductive object, generating a signal, providing the signal wirelessly to at least one of a plurality of accessories and remote device based on a first movement, followed by a second movement when a pattern or sequence has been detected, communicating to a wireless device using a transceiver associated with the processor, and controlling the least one of a plurality of accessories in accordance with an output command from the wireless device, wherein the processor achieves proximity detection of the electrically conductive object to at least one of the touch areas by lowering a sensitivity threshold of the processor to make the touch area more sensitive to nearby electrically conductive objects.