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US 2023/0403771 A1Published application
High speed image refresh system
AssigneeLumileds LLC
InventorsRonald Johannes Bonne, Udo Karbowski
Life of this patent
Estimating the term…
Abstract
A LED controller for an LED pixel array includes an image frame buffer to receive image data and a standby image buffer connected to the image frame buffer to hold a standby image. A command and control module connected is configured to substitute the standby image in the standby image buffer for the image in the image frame buffer when image data is unavailable.
Claims20
A method of fabricating an illumination device, the method comprising:
- coupling a light emitting diode (LED) array with a driver;
- coupling the driver with an image from a buffer configured to store data to control driving of the LED array by the driver;
- coupling the image frame buffer with a standby image from a buffer configured to store standby vehicle image data;
- and
- coupling a processor to the frame buffer, the processor configured to use instructions to:
- determine whether valid vehicle image data is present in the image frame buffer;
- and
- in response to determining that valid vehicle image data is not present in the image frame buffer, control the image frame buffer to load the standby vehicle image data and control the driver to drive the LED array using the standby vehicle image data to generate an image.
5 more elements
A compound metal oxide semiconductor (CMOS) backplane comprising:
- a driver configured to drive a light emitting diode (LED) array attached thereto to generate an image from a vehicle based on image data supplied thereto;
- an image frame buffer;
- a standby image buffer coupled to the image frame buffer, the standby image buffer configured to hold sets of standby image data;
- a controller coupled to the image frame buffer and the standby image buffer, the controller configured to select one set of the standby image data for transmission to the driver to generate an image by the LED array in response to a determination that the image frame buffer does not contain valid image data to supply to the driver;
- and
- at least one filter configured to provide filtered power to components of the CMOS backplane.
3 more elements
A vehicle headlamp system, comprising:
- a light emitting diode (LED) array;
- a driver configured to drive the light emitting diode (LED) array to generate an image from a vehicle based on image data supplied thereto;
- an image frame buffer;
- a standby image buffer coupled to the image frame buffer, the standby image buffer configured to hold sets of standby image data;
- a command and control module coupled to the image frame buffer and the standby image buffer, the controller configured to select one set of the standby image data for transmission to the driver to generate an image by the LED array in response to a determination that the image frame buffer does not contain valid image data to supply to the driver;
- and
- at least one filter configured to provide filtered power to components of the vehicle headlamp system.
4 more elements
Dependencies are inferred from the claim text.