Devices having calibrated LEDs
The various implementations described herein include methods, devices, and systems for calibrating LED(s). In one aspect, an electronic device includes: a plurality of light emitting diodes (LEDs); one or more processors; and memory storing a plurality of color correction matrices, each color correction matrix of the plurality of color correction matrices corresponding to an LED of the plurality of LEDs and generated based on a desired color value for the corresponding LED, wherein the electronic device is configured to relay status of the electronic device via the plurality of LEDs operating in conjunction with the plurality of color correction matrices.
1. An electronic device, comprising:
a plurality of light emitting diodes (LEDs);
one or more processors; and
memory storing a plurality of color correction matrices, each color correction matrix of the plurality of color correction matrices:
corresponding to an LED of the plurality of LEDs, and
generated based on a desired color value for the corresponding LED,
wherein the electronic device is configured to relay status of the electronic device via the plurality of LEDs operating in conjunction with the plurality of color correction matrices.
2. The electronic device of claim 1 , wherein each LED of the plurality of LEDs is a full color LED.
3. The electronic device of claim 1 , wherein each LED of the plurality of LEDs has red, green, and blue (RGB) values that are modified by application of the corresponding color correction matrix.
4. The electronic device of claim 3 , wherein the RGB values of at least one of the plurality of LEDs are non-linear, and are converted to linear RGB values by application of the corresponding color correction matrix.
5. The electronic device of claim 3 , wherein in accordance with the plurality of color correction matrices, the RGB values of each LED are converted to a color space without gamma encoding, and the plurality of color correction matrices is generated based on a look-up table.
6. The electronic device of claim 1 , wherein each LED of the plurality of LEDs is uncalibrated.
7. The electronic device of claim 1 , wherein each LED of the plurality of LEDs is configured to output light having one or more color components of a plurality of color components; and
wherein the plurality of color correction matrices includes a color correction matrix corresponding to each color component of the one or more color components.
8. The electronic device of claim 1 , wherein the electronic device is a voice-activated device.
9. The electronic device of claim 1 , wherein the memory stores one or more applications, the one or more applications including instructions to operate the plurality of LEDs in conjunction with the plurality of color correction matrices.
10. The electronic device of claim 9 , wherein the instructions to operate the plurality of LEDs include instructions regarding one or more of: illumination duration, pulse rate, duty cycle, color sequence, and brightness.
11. The electronic device of claim 9 , wherein the instructions to operate the plurality of LEDs include settings for one or more operating parameters of each LED of the plurality of LEDs.
12. The electronic device of claim 11 , wherein the one or more operating parameters include a brightness parameter.
13. The electronic device of claim 1 , wherein the memory stores instructions for operating the plurality of LEDs in conjunction with the plurality of color correction matrices in accordance with a color design language.
14. The electronic device of claim 13 , wherein the status of the electronic device includes a voice processing state, and the electronic device is configured to synchronize illumination of the plurality of LEDs according to the color design language to provide a visual pattern indicating the voice processing state of the electronic device in conjunction with the plurality of color correction matrices.
15. The electronic device of claim 14 , wherein the voice processing state is selected from one of a plurality of predefined voice processing states including a subset of a hot word detection state, a listening state, a thinking state and a responding state.
16. The electronic device of claim 14 , wherein the voice processing state includes a hot word detection state that occurs when one or more predefined hot words are detected.
17. The electronic device of claim 14 , wherein the voice processing state includes a listening state that occurs when the electronic device is actively receiving voice inputs from an environment and providing the received voice inputs to a remote server.
18. The electronic device of claim 1 , wherein each color correction matrix of the plurality of color correction matrices is scaled to prevent overrange of color values for the corresponding LED.
19. The electronic device of claim 1 , wherein the electronic device is configured to receive the plurality of color correction matrices from a calibrating device, and store the plurality of color correction matrices in the memory.
20. The electronic device of claim 19 , wherein the calibrating device includes an image sensor configured to capture one or more pictures related to the plurality of LEDs, and is configured to determine the plurality of color correction matrices based on the one or more captured pictures.