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US 8,786,197 B2Granted
Method and system for adjusting light output from a light source
AssigneeTSMC Solid State Lighting Ltd.
InventorHsin-Chieh Huang
Life of this patent
Estimating the term…
Abstract
A system having a light guide adapted to collect light from a light source, a light detector attached to the light guide, a controller electrically connected to an output of the light detector, and a driver for driving the light source detachably connected to an output of the controller. The driver includes a memory that stores a calibration value for the light source.
Claims20
A light adjusting system comprising:
- a light guide configured to collect light from a light source;
- a light detector coupled with the light guide;
- a controller electrically connected to an output of the light detector;
- and
- a driver for driving the light source, wherein the driver is coupled to an output of the controller, the driver comprising a memory that is configured to store a calibration value for the light source, the controller being configured to control the driver in response to the output of the light detector, wherein the controller is configured to update the calibration value that is stored in the memory while the controller is controlling the driver, and wherein the driver is configured to supply a correct power to the light source based on an updated stored calibration value when the controller is no longer controlling the driver.
2 more elements
A display system comprising:
- a display device comprising:
- at least one LED;
- and
- at least one driver for driving the LED, the driver comprising a memory configured to store a calibration value for the LED;
- a light guide configured to collect light from the at least one LED;
- a light detector attached to the light guide;
- and
- a controller electrically connected to an output of the light detector and connected to an input of the driver;
- wherein the controller is configured to update the calibration value in the memory while the controller is connected to the input of the driver, and wherein the driver is configured to supply a correct power to the display device based on an updated calibration value that is stored in the memory when the controller is no longer connected to the input of the driver.
6 more elements
A method comprising:
- measuring a light output at a display surface of a display device;
- comparing, via a controller, the measured light output to a predetermined threshold value;
- adjusting, via a driver being controlled by the controller, a light source in the display device so that the measured light output matches the predetermined threshold value;
- storing, in an electronic memory, a calibration value based on the adjusted light output, wherein the storing comprises updating the calibration value and storing an updated calibration value in the electronic memory;
- and
- driving, via the driver, the light source with the updated calibration value in response to the driver being disconnected from the controller.
3 more elements
Dependencies are inferred from the claim text.