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Motion password control system

  • US 6,721,738 B2
  • Filed: 01/31/2001
  • Issued: 04/13/2004
  • Est. Priority Date: 02/01/2000
  • Status: Active Grant
First Claim
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1. A motion password control system for controlling a host device comprising:

  • a motion sensor responsive to motion of the device and providing a signal corresponding to movement of the device;

    a database including stored data values corresponding to predetermined motion of the device; and

    an electronic circuit responsive to the motion sensor, configured to compare the motion sensor signal with the stored database values, and in response, provide an output signal for causing the device to perform at least one action of a preselected set of actions when the comparison reveals that the device has moved in a way which corresponds to the stored data values;

    wherein the electronic circuit is further configured to detect when the motion sensor has sensed one or more partial sequences of predetermined motion data caused by an unauthorized attempt to control the system, and in response, provide an output signal for denying access to the device.

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