Method and system for controlling solid state lighting via dithering
AssigneeLumastream Canada Ulc
InventorJason Neudorf
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Abstract
There is provided a method of controlling solid state lighting (SSL) devices including receiving dimming information; translating the dimming information into SSL control information, the SSL control information including load/LED control information and dithering information; and transmitting the SSL control information to a current source for controlling the SSL devices for white light illumination. Furthermore, the SSL device may be one of lower power light emitting diodes (LEDs), organic LEDs, and high power LEDs.
Claims11
A method of controlling solid state lighting (SSL) devices comprising:
- receiving dimming information;
- translating the dimming information into SSL control information, the SSL control information including load/LED control information which is translated to dithering information;
- and
- transmitting the SSL control information to a current source for controlling the SSL devices;
- wherein the dithering information includes information associated with a transitioning between variable frequency bands where an on time pulse duration is held constant and a period is varied for a portion of a dimming intensity range;
- and
- wherein the dithering information includes a first pair of on and off times, a second pair of on and off times and a ratio between the first and second pairs of on and off times, the ratio representing an amount of time the first pair of on and off times is used with respect to the second pair of on and off times.
A method of controlling solid state lighting devices comprising:
- using a dithered variable frequency approach for a first range of light intensities for white light illumination according to dithering information;
- and
- using a non-dithered pure variable frequency approach for at least a second range of light intensities for white light illumination
- wherein the dithering information includes information associated with a transitioning between variable frequency bands where an on time pulse duration is held constant and a period is varied for a portion of a dimming intensity range;
- and
- wherein the dithering information includes a first pair of on and off times, a second pair of on and off times and a ratio between the first and second pairs of on and off times, the ratio representing an amount of time the first pair of on and off times is used with respect to the second pair of on and off times.
Dependencies are inferred from the claim text.