LIGHT EMITTING DIODE DRIVING CIRCUIT
First Claim
1. An apparatus comprising a light emitting diode (LED) driving circuit configured to drive at least one LED, wherein the circuit comprises:
- an optical sensor configured to receive light emitted from the LED and generate a feedback signal corresponding to an amount of light received by the optical sensor; and
a current regulator configured to regulate an amount of current flowing into said at least one LED according to a comparison of the feedback signal with a first reference signal.
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Accused Products
Abstract
A LED driving circuit that may control current flow into an LED on a current path according to the amount of light sensed from the LED. An LED driving circuit for driving at least one LED may include at least one of: An optical sensor for receiving light emitted from the LED and generating a feedback signal having a level corresponding to an amount of the received light. A current regulator provided on a path through which current of the LED flows for regulating an amount of current flowing into the LED according to a comparison of the feedback signal with a first reference signal.
66 Citations
20 Claims
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1. An apparatus comprising a light emitting diode (LED) driving circuit configured to drive at least one LED, wherein the circuit comprises:
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an optical sensor configured to receive light emitted from the LED and generate a feedback signal corresponding to an amount of light received by the optical sensor; and a current regulator configured to regulate an amount of current flowing into said at least one LED according to a comparison of the feedback signal with a first reference signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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11. The apparatus of 8, wherein the light receiving diode comprises:
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a negative electrode connected to a positive electrode of said at least one LED; and a positive electrode connected to the first load.
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Specification