ARCHITECTURES FOR LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS
First Claim
1. A lamp control system comprising:
- a logic module that includesan interface configured to couple with a lighting source having multiple color channels,non-volatile memory configured to store a color model,a processor configured to compute flux ratios from the multiple color channels based on the color model, anda control signal driver configured to send the computed flux ratios as control signals to the lighting source via the interface; and
a light emitting diode-based (LED-based) lamp that includes an interface configured to couple with the logic module,two or more color strings, each color string comprising one or more light emitting diodes (LEDs) of a substantially similar color,non-volatile memory configured to store at least one spectral power density (SPD) distribution summary characterizing each color string,an optical sensor configured to measure brightness levels of the two or more color strings, anda processor configured to send at least a subset of the measured brightness levels and the SPD distribution summaries to the logic module via the interface.
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Accused Products
Abstract
Various embodiments relate to systems and methods for controlling one or more LED-based lighting sources that are coupled to a logic module by a ribbon cable. The ribbon cable allows some or all of the processing components (e.g., processors and drivers) to be decoupled from the LED-based lighting source(s). The processing components can instead be housed within the logic module, which is able to simultaneously control the LED-based lighting source(s). Together with color models established for each LED board, the logic module acts as a platform for modularity and is able to more precisely control the color channels of each LED-based lighting source using the color models established for those LED-based lighting source(s). Techniques are also described herein that allow the logic module to utilize data stored within an erasable programmable read-only memory (EPROM) that describes the color characteristics of an LED-based lighting source.
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Citations
24 Claims
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1. A lamp control system comprising:
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a logic module that includes an interface configured to couple with a lighting source having multiple color channels, non-volatile memory configured to store a color model, a processor configured to compute flux ratios from the multiple color channels based on the color model, and a control signal driver configured to send the computed flux ratios as control signals to the lighting source via the interface; and a light emitting diode-based (LED-based) lamp that includes an interface configured to couple with the logic module, two or more color strings, each color string comprising one or more light emitting diodes (LEDs) of a substantially similar color, non-volatile memory configured to store at least one spectral power density (SPD) distribution summary characterizing each color string, an optical sensor configured to measure brightness levels of the two or more color strings, and a processor configured to send at least a subset of the measured brightness levels and the SPD distribution summaries to the logic module via the interface. - View Dependent Claims (2, 3, 4, 5)
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6. A lamp control system comprising:
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a driverless light emitting diode-based (LED-based) lamp that includes one or more color strings, each color string comprising one or more light emitting diodes (LEDs) of a substantially similar color, and an optical sensor configured to generate readings specifying a brightness level of each of the one or more color strings; and a logic module that includes non-volatile memory configured to store a color model, a processor configured to determine appropriate adjustments for the driverless LED-based lamp based at least in part on the color model, the optical sensor readings, and one or more spectral power density (SPD) distribution summaries for the one or more color strings, and a control signal driver configured to send the appropriate adjustments as control signals to the driverless LED-based lamp. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising:
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generating a color model for a light emitting diode-based (LED-based) lamp having multiple color strings by creating a series of spectral power density (SPD) distribution summaries for each color string, wherein each SPD distribution summary characterizes a particular color string at a certain set of operating conditions; storing the series of SPD distribution summaries in a non-volatile memory of the LED-based lamp; determining a current operating condition of the LED-based lamp; identifying a particular SPD distribution summary corresponding to the current operating condition; transmitting the current operating condition and the particular SPD distribution summary to a logic module coupled to the LED-based lamp; identifying, by the logic module, a corrective adjustment for at least one of the multiple color strings based on the current operating condition and the particular SPD distribution summary; transmitting, by the logic module, a control signal representing the corrective adjustment to the LED-based lamp. - View Dependent Claims (22, 23, 24)
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Specification