CONTROL METHODS FOR LED CHAINS
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United States of America Patent
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Issued Date -
Apr 18, 2013
app pub date -
Oct 12, 2012
filing date -
Oct 13, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Control methods for driving LED chains. An output power is provided to drive the LED chains. Short protections are provided to the LED chains, respectively. Whether at least one of the LED chains encounters an under-current event is detected. If any one of the LED chains encounters the under-current event, all short protections are stopped. Whether the output power reaches safe requirement is detected. After the output power reaches the safe requirement, the short protection corresponding to a normal LED chain is resumed. The normal LED chain refers to one of the LED chains that does not encounter the under-current event.
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