METHOD AND APPARATUS PROVIDING DEEP DIMMING OF SOLID STATE LIGHTING SYSTEMS
First Claim
1. A device for enabling deep dimming of a solid state lighting unit through a power converter, the device comprising:
- a phase detector configured to receive a voltage signal and to detect rising edges of waveforms of the voltage signal;
a processing unit configured to initiate a predetermined shutdown period in response to each detected rising edge; and
a switch configured to provide a control signal that deactivates the power converter during the shutdown period, preventing the power converter from providing power to the solid state light unit during the shutdown period.
3 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are devices and related methods for optimally extending the range of light output of solid-state light sources, particularly at minimum light levels, through a power converter that includes a phase detector, a processing unit and a switch. The phase detector is configured to receive a voltage signal and to detect rising edges of waveforms of the voltage signal. The processing unit is configured to initiate a predetermined shutdown period in response to each detected rising edge. The switch is configured to provide a control signal that deactivates the power converter during the shutdown period, preventing the power converter from providing power to the solid state light unit during the shutdown period.
-
Citations
20 Claims
-
1. A device for enabling deep dimming of a solid state lighting unit through a power converter, the device comprising:
-
a phase detector configured to receive a voltage signal and to detect rising edges of waveforms of the voltage signal; a processing unit configured to initiate a predetermined shutdown period in response to each detected rising edge; and a switch configured to provide a control signal that deactivates the power converter during the shutdown period, preventing the power converter from providing power to the solid state light unit during the shutdown period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method implemented by a timing and control circuit for enabling deep dimming of a solid state lighting unit through a power converter, the method comprising:
-
receiving a rectified voltage signal; detecting rising edges of waveforms of the rectified voltage signal; and deactivating the power converter for a predetermined shutdown period in response to detecting each detected rising edge to prevent the power converter from providing power to the solid state light unit during the shutdown period. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. A computer readable medium for storing a program, executable by a computer processor, for enabling deep dimming of a solid state lighting unit through a power converter, the computer readable medium comprising:
-
a detecting code segment for detecting rising edges of waveforms of a received rectified voltage signal; and a deactivating code segment for providing a signal to deactivate the power converter for a predetermined shutdown period in response to each detected rising edge, preventing the power converter from providing power to the solid state light unit during the shutdown period. - View Dependent Claims (19, 20)
-
Specification