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US 2014/0176007 A1Published application
Light emitting apparatus for method of manufacturing and using the same
AssigneeALVA Systems, Inc.
InventorsBradford K. Whitaker, Kenneth Brwonlee, Michael Brownlee
Life of this patent
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Abstract
An apparatus includes a load circuit operatively coupled to a controller circuit through a drive circuit. The drive circuit provides a drive signal to the load circuit in response to receiving a digital indication from the controller circuit. The load circuit includes first and second light emitting sub-circuits connected in parallel. The first and second light emitting sub-circuits provide first and second spectrums of light, respectively.
Claims1
An apparatus comprising:
- a controller circuit;
- a drive circuit configured to:
- receive a control signal from the controller circuit, wherein the control signal includes a first portion for a first light intensity and a second portion for a second light intensity, and
- generate a composite drive signal including a first waveform greater than a zero voltage and a second waveform less than a zero voltage, wherein the first waveform is based on the first portion of the control signal and the second waveform is based on the second portion of the control signal;
- and
- a load circuit coupled to the drive circuit and configured to illumine a first portion of a light emitting device based on the first waveform and illumine a second portion of the light emitting device based on the second waveform.
3 more elements
Dependencies are inferred from the claim text.