Apparatus for determining multi-bit data via light received by a light receiver and coupled to spectral sensors that measure light in spectral bands

  • US 6,915,955 B2
  • Filed: 01/04/2002
  • Issued: 07/12/2005
  • Est. Priority Date: 01/02/1996
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring spectral characteristics of received light, comprising:

  • one or more light receivers, wherein the received light is received by the one or more lights receivers;

    one or more spectral sensors coupled to receive at least a portion of the received light, wherein the one or more spectral sensors measure the intensity of the received light in one or more predetermined spectral bands; and

    a processor, wherein the processor receives data corresponding to one or more light intensities measured by the one or more spectral sensors;

    wherein the processor determines a data value of at least two bits based on the received light measured in each of the one or more predetermined spectral bands, wherein the data value for each spectral band is determined based on the measured light intensity level of the received light in each spectral band.

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