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Input device for a computer system

  • US 7,719,517 B2
  • Filed: 06/21/2005
  • Issued: 05/18/2010
  • Est. Priority Date: 06/21/2005
  • Status: Expired due to Fees
First Claim
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1. A peripheral input device for a computing system having a housing, the input device comprising:

  • a body comprising;

    a top and a bottom, wherein the top and the bottom are not greater than 5 mm in height and 54 mm in width and configured to be stored within the housing of the computing system, andat least one first extendable protrusion designed to extend, upon removal of the input device from the housing of the computing system, from the bottom of the input device in order to elevate the input device wherein the body comprises an expandable body comprising at least one second extendable protrusion extending from the top of the body, the at least one second extendable protrusion comprising at least one optics component, wherein a distance between the optics component and the bottom of the body increases upon expansion of the body;

    a tracking mechanism, wherein the tracking mechanism is an optical system configured to detect movement of the bottom of the body over a surface, wherein the optical system comprises;

    a light source for emitting light,a light pipe for receiving at least a portion of the light emitted from the light source, wherein at least a portion of the light within the light pipe is projected onto the tracking surface,at least one first microlens array located within the body and positioned to receive light reflected from the tracking surface,at least one second microlens array located within the body and positioned to receive light redirected from the at least one first microlens array, wherein the at least one second microlens array is configured to constrain an optical diameter of the redirected light,an aperture plate located between the at least one first microlens array and the at least one second microlens array, wherein the received light redirected from the at least one first microlens array is focused through the aperture plate to the second microlens array, anda light sensor in optical communication with the at least one second microlens array; and

    an interface for interfacing the computing system.

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