Apparatus having a first optical sensor making a first measurement to detect position and a second optical sensor making a second measurement

  • US 8,472,012 B2
  • Filed: 08/28/2012
  • Issued: 06/25/2013
  • Est. Priority Date: 01/02/1997
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprising:

  • a processor;

    a display coupled to the processor and displaying information to a user of the apparatus;

    at least a first optical sensor making a first measurement, wherein data based on the first measurement is coupled to the processor;

    at least a second optical sensor making a second measurement, wherein data based on the second measurement is coupled to the processor;

    at least one source of illumination operating under control of the processor;

    wherein the source of illumination and the first optical sensor in part determine a minimal distance between the apparatus and an external object such that illumination emitted by the source is not received by the first optical sensor when the apparatus is less than the minimal distance from the external object;

    wherein data based on the first measurement made with the first optical sensor determines a position of the apparatus with respect to an object;

    wherein data based on the second measurement made with the second optical sensor determines an optical property of light received by the apparatus.

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