CAPACITANCE SENSING CIRCUITS, METHODS AND SYSTEMS HAVING CONDUCTIVE TOUCH SURFACE

• US 20170160831A1
• Filed: 10/17/2016
• Published: 06/08/2017
• Est. Priority Date: 09/28/2011
• Status: Abandoned Application

• Current Assignee: Cypress Semiconductor Corporation (Infineon Technologies AG)
• Original Assignee: Cypress Semiconductor Corporation (Infineon Technologies AG)
• Inventors: Hanumanthaiah, Shruti, Srinivasagam, Kannan
• Application Number:
  US15/295,842
• Publication Number:
  US 20170160831A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells
• CPC Class Codes: H03K 17/955 using a capacitive detector
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 17/975 using a capacitive movable element
• CPC Class Codes: H03K 17/98 having a plurality of control members, e.g. keyboard

Abstract

A system includes an electromechanical device coupled to a sensing device to detect input to the electromechanical device and display to displays information related to the electromechanical device. The sensing device includes a touch surface including tactile features delineating a portion of the touch surface to be touched by the conductive object. A sensor of the system is to detect the conductive object proximate to the delineated portion of the touch surface based on a capacitance.

Claims

1-20. -20. (canceled)

21. A system, comprising:

an electromechanical device;

a sensing device coupled to the electromechanical device and configured to detect input to the electromechanical device;

a display configured display information related to the electromechanical device, wherein the sensing device comprises,

a touch surface including tactile features delineating a portion of the touch surface to be touched by a conductive object,

a sensor configured to detect the conductive object proximate to the delineated portion of the touch surface based on a capacitance.

22. The system of claim 21, wherein the tactile features are arranged around a perimeter of the portion of the touch surface to be touched by the conductive object.

23. The system of claim 21, wherein the tactile features are arranged as one or more braille characters.

24. The system of claim 21, wherein the electromechanical device is a household appliance controllable through the sensing device, wherein the display is configured to indicate a status of the household appliance.

25. The system of claim 21, wherein the electromechanical device is an automotive device controllable through the sensing device, wherein the display is configured to indicate a status of the household appliance.