Controlling light emitting diodes for switching patterns

A method comprising:

• determining a switching pattern indicating to activate a first plurality of light emitting diodes (LEDs) included in a string of LEDs of a LED module during a first time range and to activate a second plurality of LEDs included in the string of LEDs during a second time range, wherein the first plurality of LEDs comprises a first number of LEDs that is different from a second number of LEDs of the second plurality of LEDs;
• determining, for each LED of the first plurality of LEDs included in the string of LEDs, a respective timeslot of a plurality of timeslots of the first time range;
• determining, for each LED of the second plurality of LEDs included in the string of LEDs, a respective timeslot of a plurality of timeslots of the second time range, wherein each timeslot of the plurality of timeslots of both the first time range and the second time range is equal to a time duration;
• outputting a first instruction to a switching device to cause the switching device to couple, during the first time range, each LED of the first plurality of LEDs in the string of LEDs to a supply during the respective timeslot determined for the LED of the first plurality of LEDs;
• and
• outputting a second instruction to the switching device to cause the switching device to couple, during the second time range, each LED of the second plurality of LEDs in the string of LEDs to the supply during the respective timeslot determined for the LED of the second plurality of LEDs, wherein the supply is configured to output a voltage or current to the string of LEDs that remains constant during both the first time range when the first instruction causes the switching device to couple each LED of the first plurality of LEDs included in the string of LEDs to the supply and the second time range when the second instruction causes the switching device to couple each LED of the second plurality of LEDs included in the string of LEDs to the supply.

A system comprising:

• a light emitting diode (LED) module;
• a switching device configured to couple each LED included in a string of LEDs of the LED module to a supply;
• and
• a controller device configured to:
• determine a switching pattern indicating to activate a first plurality of LEDs included in the string of LEDs during a first time range and to activate a second plurality of LEDs included in the string of LEDs during a second time range, wherein the first plurality of LEDs comprises a first number of LEDs that is different from a second number of LEDs of the second plurality of LEDs;
• determine, for each LED of the first plurality of LEDs included in the string of LEDs, a respective timeslot of a plurality of timeslots of the first time range;
• determine, for each LED of the second plurality of LEDs included in the string of LEDs, a respective timeslot of a plurality of timeslots of the second time range, wherein each timeslot of the plurality of timeslots of both the first time range and the second time range is equal to a time duration;
• output a first instruction to the switching device to cause the switching device to couple, during the first time range, each LED of the first plurality of LEDs in the string of LEDs to the supply during the respective timeslot determined for the LED of the first plurality of LEDs, and
• output a second instruction to the switching device to cause the switching device to couple, during the second time range, each LED of the second plurality of LEDs in the string of LEDs to the supply during the respective timeslot determined for the LED of the second plurality of LEDs, wherein the supply is configured to output a voltage or current to the string of LEDs that remains constant during both the first time range when the first instruction causes the switching device to couple each LED of the first plurality of LEDs included in the string of LEDs to the supply and the second time range when the second instruction causes the switching device to couple each LED of the second plurality of LEDs included in the string of LEDs to the supply.