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Multicolor Visual Feedback for Portable, Non-Volatile Storage

  • US 20080297368A1
  • Filed: 05/28/2007
  • Published: 12/04/2008
  • Est. Priority Date: 05/28/2007
  • Status: Active Grant
First Claim
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1. A portable storage device, comprising:

  • an interface,a controller in communication with said interface,a memory in communication with said controller, anda light-emitting-diode assembly in communication with said controller,said light-emitting-diode assembly comprising;

    a first and a second light-emitting-diode element, said first light-emitting-diode element emitting a first color of light and said second light-emitting-diode element emitting a second color of light, said second color of light of a different wavelength than said first color of light, said first light-emitting-diode element and said second light-emitting-diode element each independently controlled by said controller, said controller pulse-width-modulating said first light-emitting-diode element and said second light-emitting-diode element light in response to a percentage change related to data such that at most only one of said light-emitting-diode elements is illuminated, and said pulse-width-modulation occurs at a frequency, said frequency ranging between 30 Hertz and 1000 Hertz, whereby said light from said light-emitting-diode assembly appears to the human eye to be of a third color which is in between said first color and said second color in wavelength.

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