| Patent application number | Description | Published |
|---|
| 20090001252 | Brightness Control for Dynamic Scanning Backlight - A method of controlling the luminance of a luminaire on an individual frame basis, without affecting a slow acting color loop controlling the color temperature of the luminaire, the method comprising: receiving a reference value representative of a target color; receiving a luminance signal defining the luminance of the luminaire per frame; adjusting a modulated signal driving the luminaire directly responsive to the received luminance signal, thereby controlling the luminance of the luminaire per frame; sampling the optical output of the luminaire per frame; comparing a value responsive to the sampled optical output with a value responsive to the received reference value to output a difference signal; and further adjusting the modulated signal driving the luminaire responsive to the compared value so as to reduce the difference signal. | 01-01-2009 |
| 20090001253 | Optical Sampling and Control Element - An optical sampling and control element for use with a luminaire exhibiting a cycle and a frame, the optical sampling and control element being constituted of a color sensor in optical communication with the luminaire; and a sampler connected to the outputs of the color sensor, the sampler comprising an integrator arranged to integrate the outputs of the color sensor over a predetermined period less than the frame. | 01-01-2009 |
| 20090021384 | Method of Sampling a Modulated Signal Driven Channel - An automated method of sampling an electrical condition of each of a plurality channels, the method comprising: driving each of the plurality of channels with a modulated signal; providing a settable flag associated with each of the plurality of channels; selecting one of the plurality of channels; identifying if the settable flag associated with the selected one of the plurality of channels is set; and in the event that the settable flag associated with the selected one of the plurality of channels is not set, and a function of the modulated signal of the selected one of the plurality of channels is active and stable: sampling an electrical condition of the selected one of the plurality of channels; and setting the provided settable flag associated with the selected one of the plurality of channels. | 01-22-2009 |
| 20090231354 | A Color Controller for a Luminaire - A color controller for a luminaire constituted of: a thru-converter operative to convert an input signal to at least one luminaire drive signal; an illumination sampler arranged to sample an output from the luminaire and generate a representation thereof; and a feedback controller arranged to receive the output representation and generate the updatable conversion factor in cooperation with calibration luminance and color values, wherein the thru-converter operation is responsive to a trigger signal for defining a first and a second mode, the first mode for generating the luminaire drive signal for the luminaire responsive to the input signal being a frame luminance signal and target color signals and wherein the conversion to the at least one luminaire drive signal is responsive to an updatable conversion factor, and the second mode for generating the luminaire drive signal for the luminaire responsive to the feedback controller. | 09-17-2009 |
| 20100030392 | Time Integrated Guard Band - An automated method of controlling a power managed system, such as a power over Ethernet system. The method is constituted of: establishing a power consumption budget for a plurality of loads; defining an overbudget limit and an associated time window; monitoring power consumption of the plurality of loads; determining, at a plurality of time intervals over the associated time window, an indication of excess power consumption for each of the plurality of time intervals, the indication of excess power consumption being a function of the monitored power consumption and the defined power consumption budget; and in the event that an integral over the associated time window of a function of the determined indications of excess power consumption exceeds the overbudget limit, disabling at least one load from consuming power. | 02-04-2010 |
| 20100072903 | Color and Intensity Control Over Power Wires - A control element for a luminaire constituted of a first and a second manually variable non-momentary impedance and a first and a second time dependent gating circuit, each responsive to a respective manually variable non-momentary impedance and operative to provide a time dependent gating of a respective polarity of an alternating current power signal, the amount of time of the gating reflecting the present value of the respective manually variable non-momentary impedance, wherein the first time dependent gating circuit and the second time dependent gating circuit are restrained to maintain a minimum predetermined power towards the solid state lighting unit. | 03-25-2010 |
| 20100134018 | LED STRING DRIVER WITH LIGHT INTENSITY RESPONSIVE TO INPUT VOLTAGE - A driving arrangement for a plurality of light emitting diodes (LEDs), the driving arrangement constituted of: a plurality of serially connected first LEDs coupled to a source voltage; a plurality of first electronically controlled switches, each associated with a particular one of the plurality of serially connected first LEDs and arranged to provide, when closed, a bypass current path for the associated first LED; and a control circuitry coupled to a control terminal of each of the plurality of first electronically controlled switches, the control circuitry operative to close a number of the plurality of first electronic switches, the number responsive to a voltage level of the source voltage. | 06-03-2010 |
