Multicolor LED sequencer
AssigneeVektrex Electronic Systems, Inc.
InventorJeffery Neil Hulett
Life of this patent
Estimating the term…
Abstract
A multicolored LED luminaire module is provided that can be controlled using a single driver and only two wires. The LED luminaire module comprises a plurality of LEDs and a sequencer. The sequencer connects each LED to the circuit in a predetermined order. Synchronously with the sequencer, the driver transmits a control signal comprising a time division multiplexed (TDM) signal that combines the driving currents for each LED into one TDM signal. The sequencer and TDM rate are sufficiently fast such that the light emitted by the LED luminaire appears to be the combined light from all the LEDs.
Claims26
A multicolor light emitting diode (LED) lighting system, comprising:
- an LED module comprising a plurality of LEDs, and a sequencer electrically coupled to the plurality of LEDs configured to connect LEDs of the plurality to a circuit and isolate other LEDs of the plurality from the circuit in a predetermined sequence;
- a driver electrically coupled to the circuit and configured to provide a driving signal to the plurality of LEDs according to the predetermined sequence and in synchronization with the sequencer;
- and
- a second LED module and a second driver, the second LED module and second driver electrically coupled to the circuit, wherein the second driver is configured to repeat the driving signal and provide the repeated driving signal to the second LED module;
- wherein the driving signal comprises a plurality of driving pulses ordered according to the predetermined sequence, a driving pulse of the plurality configured to cause the LED connected to the circuit to illuminate.
A multicolor light emitting diode (LED) lighting system, comprising:
- an LED module comprising a of LEDs, and a sequencer electrically coupled to the plurality of LEDs configured to connect LEDs of the plurality to a circuit and isolate other LEDs of the plurality from the circuit in a predetermined sequence;
- and
- a driver electrically coupled to the circuit and configured to provide a driving signal to the plurality of LEDs according to the predetermined sequence and in synchronization with the sequencer;
- a second LED module connected to the circuit in series with the first LED module;
- and
- a shunting circuit electrically coupled to the second LED module configured to shunt current around the second LED module if the current across the second LED module exceeds a predetermined threshold.
An LED driving device, comprising:
- a control module;
- and
- a driving module coupled to the control module;
- wherein the control module is configured to cause the driving module to provide a driving signal to an LED module in synchronization with a sequencer in the LED module to cause a plurality of LEDs in the LED module to illuminate in a predetermined sequence;
- wherein the plurality of driving pulses have current levels selected from a predetermined plurality of current levels;
- wherein the control module is configured to receive a driving signal transmitted by a second LED driving device;
- and
- wherein the control module is configured to repeat the received driving signal by determining which current level of the predetermined current level was originally transmitted by the second LED driving device and causing the driver module to transmit a repeat driving signal having the originally transmitted current level.
A multicolor light emitting diode (LED) lighting system, comprising:
- an LED module comprising a plurality of LEDs, and a sequencer electrically coupled to the plurality of LEDs configured to connect LEDs of the plurality to a circuit and isolate other LEDs of the plurality from the circuit in a predetermined sequence;
- a driver electrically coupled to the circuit and configured to provide a driving signal to the plurality of LEDs according to the predetermined sequence and in synchronization with the sequencer;
- and
- a second LED module and a second driver, the second LED module and second driver electrically coupled to the circuit, wherein the second driver is configured to repeat the driving signal and provide the repeated driving signal to the second LED module.
Dependencies are inferred from the claim text.