Patent ID: 7683801
Filing Date: 2010-03-23
Classification: G08B,Y10S

Abstract:
1. A portable storage device, comprising: an interface, a controller in communication with said interface, a memory in communication with said controller, and a light-emitting-diode assembly in communication with said controller, said light-emitting-diode assembly comprising: a first and 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 being 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 configured to pulse-width-modulate said first light-emitting-diode element and said second light-emitting-diode element to emit light that appears to the human eye to be of an intermediate color which has a wavelength between said first color and said second color, said controller configured to vary the wavelength of light emitted by said light-emitting-diode assembly between said first color and said second color in direct correlation to a percentage related to data storage of said memory, said first color corresponding to a first percentage, said second color corresponding to a second percentage, said intermediate color corresponding to an intermediate percentage between the first and second percentages.