Systems and methods for dimming control using TRIAC dimmers
First Claim
1. A system for dimming control of one or more light emitting diodes, the system comprising:
- a first comparator configured to receive a first threshold signal and an input signal associated with a TRIAC dimmer and generate a comparison signal based on at least information associated with the first threshold signal and the input signal; and
a driving component configured to receive the comparison signal, generate an output signal based on at least information associated with the comparison signal, and send the output signal to a switch;
wherein;
the first comparator is further configured to generate the comparison signal at a first logic level if the input signal is larger than the first threshold signal in magnitude and generate the comparison signal at a second logic level if the input signal is smaller than the first threshold signal in magnitude; and
the driving component is further configured to generate the output signal and cause the switch to remain closed for a period of time until at least the comparison signal changes from the second logic level to the first logic level.
1 Assignment
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Accused Products
Abstract
System and method for dimming control of one or more light emitting diodes. An example system includes one or more signal processing components configured to receive a first signal associated with a TRIAC dimmer, process information associated with the first signal, determine whether the TRIAC dimmer is in a first condition or a second condition, generate a second signal based on at least information associated with the first signal, and send the second signal to a switch. The one or more signal processing components are further configured to, if the TRIAC dimmer is determined to be in the first condition, generate the second signal to cause the switch to be opened and closed corresponding to a modulation frequency.
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Citations
7 Claims
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1. A system for dimming control of one or more light emitting diodes, the system comprising:
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a first comparator configured to receive a first threshold signal and an input signal associated with a TRIAC dimmer and generate a comparison signal based on at least information associated with the first threshold signal and the input signal; and a driving component configured to receive the comparison signal, generate an output signal based on at least information associated with the comparison signal, and send the output signal to a switch; wherein; the first comparator is further configured to generate the comparison signal at a first logic level if the input signal is larger than the first threshold signal in magnitude and generate the comparison signal at a second logic level if the input signal is smaller than the first threshold signal in magnitude; and the driving component is further configured to generate the output signal and cause the switch to remain closed for a period of time until at least the comparison signal changes from the second logic level to the first logic level. - View Dependent Claims (2, 3, 4)
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5. A method for dimming control of one or more light emitting diodes, the method comprising:
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receiving a threshold signal and an input signal associated with a TRLAC dimmer; generating a comparison signal based on at least information associated with the first threshold signal and the input signal; receiving the comparison signal; generating an output signal based on at least information associated with the comparison signal; and sending the output signal to a switch; wherein the process for generating a comparison signal based on at least information associated with the first threshold signal and the input signal includes; if the input signal is larger than the first threshold signal in magnitude, generating the comparison signal at a first logic level; and if the input signal is smaller than the first threshold signal in magnitude, generating the comparison signal at a second logic level; wherein the process for sending the output signal to a switch includes sending the output signal to cause the switch to remain closed for a period of time until at least the comparison signal changes from the second logic level to the first logic level. - View Dependent Claims (6, 7)
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Specification