Method and system for variable LED output in an electronic device
First Claim
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1-1. The system of claim 1, wherein the processing unit comprises a state machine unit operable to receive a time of day and determine a percentage of a particular LED brightness based on the time of day.
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Abstract
A waveform generator generates LED signal values that define an LED waveform and period. Each signal value is scaled by a particular scaling value to scale the amplitude of the LED waveform. The scaled LED waveform is then transmitted to an LED to cause the light emitted by the LED to pulse at a variable brightness.
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Citations
19 Claims
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1-1. The system of claim 1, wherein the processing unit comprises a state machine unit operable to receive a time of day and determine a percentage of a particular LED brightness based on the time of day.
- 3. The system of claim 2, wherein the processing unit further comprises a scaling unit operable to receive the percentage of a particular LED brightness based on the time of day and determine a scaling value for each of the plurality of LED signal values using the percentage of a particular LED brightness.
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9. A method for varying a brightness of light emitted from a light-emitting diode (LED in an electronic device, comprising:
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a) generating an LED signal waveform comprised of a plurality of LED signal values;
b) determining a scaling value for one or more LED signal values in the plurality of LED signal values, wherein the scaling value is based upon a percentage of a particular LED brightness; and
c) generating one or more scaled LED signal values by scaling the one or more LED signal values with the scaling value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification