Time division modulation with average current regulation for independent control of arrays of light emitting diodes
AssigneePoint Somee Limited Liability Company
InventorsAnatoly Shteynberg, Harry Rodriguez
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Abstract
Representative method and computer-readable medium embodiments provide for sourcing current to a series of light emitting diodes in a plurality of series of light emitting diodes. A representative method comprises generating a current, sequentially and separately switching the current to each of the series of light emitting diodes in the plurality of series of light emitting diodes for a corresponding period of time, and predicting an output voltage across a selected series of light emitting diodes using a plurality of parameters stored in a memory.
Claims28
A method of providing power to a series of light emitting diodes in a plurality of series of light emitting diodes, the method comprising:
- generating a series current;
- measuring the series current using a first current sensor;
- using a controller, sequentially and separately switching the series current to each of the series of light emitting diodes in the plurality of series of light emitting diodes for a corresponding period of time;
- and
- using the controller, predicting an output voltage across a selected series of light emitting diodes using a plurality of parameters stored in a memory, wherein the plurality of parameters corresponds to the plurality of series of light emitting diodes.
A method of providing power to an array of light emitting diodes in a plurality of arrays of light emitting diodes, the method comprising:
- generating an input current;
- measuring the input current using a first current sensor;
- using a controller, switching the input current to each array of light emitting diodes in the plurality of arrays of light emitting diodes for a corresponding period of time;
- measuring a corresponding output voltage for each array of light emitting diodes in the plurality of arrays of light emitting diodes;
- using the controller, predicting an output voltage across a selected array of light emitting diodes using a plurality of parameters stored in a memory, wherein the plurality of parameters corresponds to the plurality of arrays of light emitting diodes;
- and
- updating the predicted output voltage based on a corresponding measured output voltage.
A method of providing power to an array of light emitting diodes in a plurality of arrays of light emitting diodes, the method comprising:
- generating an input current;
- measuring the input current using a first current sensor;
- using a controller, switching the input current to each array of light emitting diodes in the plurality of arrays of light emitting diodes for a corresponding period of time;
- using the controller, predicting an output voltage across a selected array of light emitting diodes using a plurality of parameters stored in a memory, wherein the plurality of parameters corresponds to the plurality of arrays of light emitting diodes;
- and
- using at least one second current sensor, measuring a corresponding current through each array of light emitting diodes in the plurality of arrays of light emitting diodes.
A computer-readable medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
- generate a current;
- measure the current using a first current sensor;
- sequentially and separately switch the current to each of a series of light emitting diodes in a plurality of series of light emitting diodes for a corresponding period of time;
- and
- predict an output voltage across a selected series of light emitting diodes using a plurality of parameters stored in a memory, wherein the plurality of parameters corresponds to the plurality of series of light emitting diodes.
A computer-readable medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
- generate an input current;
- measure the input current using a first current sensor;
- switch the input current to each array of light emitting diodes in a plurality of arrays of light emitting diodes for a corresponding period of time;
- measure a corresponding output voltage for each array of light emitting diodes in the plurality of arrays of light emitting diodes;
- predict an output voltage across a selected array of light emitting diodes using a plurality of parameters stored in a memory, wherein the plurality of parameters corresponds to the plurality of light emitting diodes;
- and
- update the predicted output voltage based on a corresponding measured output voltage.
A computer-readable medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
- generate an input current;
- measure the input current using a first current sensor;
- switch the input current to each array of light emitting diodes in a plurality of arrays of light emitting diodes for a corresponding period of time;
- predict an output voltage across a selected array of light emitting diodes using a plurality of parameters stored in a memory, wherein the plurality of parameters corresponds to the plurality of light emitting diodes;
- and
- measure a corresponding current through each array of light emitting diodes in the plurality of arrays of light emitting diodes using at least one second current sensor.
Dependencies are inferred from the claim text.