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Input device and an electronic device comprising an input device

  • US 7,829,812 B2
  • Filed: 09/21/2007
  • Issued: 11/09/2010
  • Est. Priority Date: 07/03/2007
  • Status: Expired due to Fees
First Claim
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1. An input device for inputting information to an electronic device, the input device comprising:

  • a support structure;

    a switch device, which is mounted on the support structure, for providing tactile feedback to a user upon depression of the switch device by a finger of the user;

    a capacitive touch sensing device arranged in relation to the switch device such that it is configured to sense the capacitance of said finger upon depression of the switch device by said finger;

    a button positioned relative to the capacitive touch sensing device such that touch by a finger on a user side of the button can be sensed by the capacitive touch sensing device;

    wherein the user side of the button is coated with a conductive layer forming the capacitive touch sensing device on the button;

    wherein the input device is operatively connected to a controller, and wherein;

    the switch device is configured to output a control signal to the controller upon depression of the switch device, the control signal indicating that inputting of said information is requested;

    the capacitive touch sensing device is configured to output a control signal to the controller when the capacitance of a finger of the user is sensed by the capacitive touch sensing device; and

    the controller is configured to initiate the requested inputting of said information only when the controller receives said control signal from both the switch device and the capacitive touch sensing device.

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