SYSTEMS AND METHODS FOR DIMMING CONTROL USING SYSTEM CONTROLLERS
First Claim
1. A system for dimming control, the system comprising:
- a system controller including a first controller terminal and a second controller terminal;
a transistor including a first transistor terminal, a second transistor terminal and a third transistor terminal; and
a first resistor including a first resistor terminal and a second resistor terminal;
wherein;
the first transistor terminal is coupled, directly or indirectly, to the second controller terminal;
the first resistor terminal is coupled to the second transistor terminal; and
the second resistor terminal is coupled to the third transistor terminal;
wherein;
the system controller is configured to receive an input signal at the first controller terminal and to generate an output signal at the second controller terminal based on at least information associated with the input signal; and
the transistor is configured to receive the output signal at the first transistor terminal and to change between a first condition and a second condition based on at least information associated with the output signal;
wherein the system controller is further configured to, if the input signal becomes higher than a threshold, change the output signal after a delay in order to change the transistor from the first condition to the second condition.
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Accused Products
Abstract
System and method for dimming control. The system includes a system controller, a transistor, and a resistor. The system controller includes a first controller terminal and a second controller terminal. The transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal. The resistor including a first resistor terminal and a second resistor terminal. The first transistor terminal is coupled, directly or indirectly, to the second controller terminal. The first resistor terminal is coupled to the second transistor terminal. The second resistor terminal is coupled to the third transistor terminal. The system controller is configured to receive an input signal at the first controller terminal and to generate an output signal at the second controller terminal. The transistor is configured to receive the output signal at the first transistor terminal and to change between a first condition and a second condition.
99 Citations
36 Claims
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1. A system for dimming control, the system comprising:
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a system controller including a first controller terminal and a second controller terminal; a transistor including a first transistor terminal, a second transistor terminal and a third transistor terminal; and a first resistor including a first resistor terminal and a second resistor terminal; wherein; the first transistor terminal is coupled, directly or indirectly, to the second controller terminal; the first resistor terminal is coupled to the second transistor terminal; and the second resistor terminal is coupled to the third transistor terminal; wherein; the system controller is configured to receive an input signal at the first controller terminal and to generate an output signal at the second controller terminal based on at least information associated with the input signal; and the transistor is configured to receive the output signal at the first transistor terminal and to change between a first condition and a second condition based on at least information associated with the output signal; wherein the system controller is further configured to, if the input signal becomes higher than a threshold, change the output signal after a delay in order to change the transistor from the first condition to the second condition. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system controller for dimming control, the system controller comprising:
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a first controller terminal; and a second controller terminal; wherein the system controller is configured to; receive an input signal at the first controller terminal and generate a dimming signal based on at least information associated with the input signal; generate a synchronization signal based on at least information associated with the dimming signal; and output a gate drive signal at the second controller terminal based on at least information associated with the synchronization signal; wherein the system controller is further configured to; generate a first pulse of the synchronization signal in response to a first rising edge of the dimming signal, the first pulse including a first falling edge and being associated with a first pulse width; and start changing the gate drive signal between a first logic level and a second logic level for a first burst period at the first falling edge of the pulse. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system controller for dimming control, the system controller comprising:
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a first controller terminal; and a second controller terminal; wherein the system controller is configured to; receive an input signal at the first controller terminal and generate a dimming signal based on at least information associated with the input signal, the dimming signal being associated with a dimming period; and output a gate drive signal at the second controller terminal based on at least information associated with the dimming signal, the gate drive signal being related to a plurality of switching periods included within the dimming period; wherein; the plurality of switching periods include a plurality of on-time periods respectively; and the system controller is further configured to increase the plurality of on-time periods in duration over time. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for dimming control using at least a system controller including a first controller terminal and a second controller terminal, the method comprising:
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receiving an input signal at the first controller terminal; processing information associated with the input signal; generating an output signal at the second controller terminal based on at least information associated with the input signal in order to change a transistor between a first condition and a second condition, the transistor including a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being coupled, directly or indirectly, to the second controller terminal; and if the input signal becomes higher than a threshold, changing the output signal after a delay in order to change the transistor from the first condition to the second condition; and shorting a resistor by the transistor in the second condition, the resistor including a first resistor terminal and a second resistor terminal, the first resistor terminal being coupled to the second transistor terminal, the second resistor terminal being coupled to the third transistor terminal.
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35. A method for dimming control using at least a system controller including a first controller terminal and a second controller terminal, the method comprising:
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receiving an input signal at the first controller terminal; processing information associated with the input signal; generating a dimming signal based on at least information associated with the input signal; processing information associated with the dimming signal; generating a synchronization signal based on at least information associated with the dimming signal; processing information associated with the synchronization signal; and outputting a gate drive signal at the second controller terminal based on at least information associated with the synchronization signal; wherein; the process for generating a synchronization signal based on at least information associated with the dimming signal includes generating a first pulse of the synchronization signal in response to a first rising edge of the dimming signal, the first pulse including a first falling edge and being associated with a first pulse width; and the process for outputting a gate drive signal at the second controller terminal based on at least information associated with the synchronization signal includes starting changing the gate drive signal between a first logic level and a second logic level for a first burst period at the first falling edge of the pulse.
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36. A method for dimming control using at least a system controller including a first controller terminal and a second controller terminal, the method comprising:
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receiving an input signal at the first controller terminal; processing information associated with the input signal; generating a dimming signal based on at least information associated with the input signal, the dimming signal being associated with a dimming period; processing information associated with the dimming signal; and outputting a gate drive signal at the second controller terminal based on at least information associated with the dimming signal, the gate drive signal being related to a plurality of switching periods included within the dimming period; wherein; the plurality of switching periods include a plurality of on-time periods respectively; and the plurality of on-time periods increase in duration over time.
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Specification