Device and method for data communication using visible light

1. A method, comprising:

determining a first color corresponding to target data based on a first table regarding a relationship between data and colors;

determining a second table as a substitute for the first table;

determining a second color corresponding to the target data based on the second table; and

transmitting the target data by displaying at least one from among the first color in a first illustrative figure and the second color in a second illustrative figure,

wherein the first illustrative figure corresponds to the first table and the second illustrative figure corresponds to the second table.

2. An electronic device, comprising:

a memory storing instructions and a first table regarding a relationship between data and colors;

a display; and

at least one processor configured to execute the stored instructions to:

determine a second table as a substitute for the first table;

determine a first color and a second color corresponding to a target data respectively based on the first table and the second table; and

control the display to display at least one from among the first color in a first illustrative figure and the second color in a illustrative figure,

wherein the first illustrative figure corresponds to the first table and the second illustrative figure corresponds to the second table.

3. The electronic device of claim 2 , wherein the first illustrative figure and the second illustrative figure are displayed in turn based on a preset period.

4. The electronic device of claim 3 , wherein the processor is configured to execute the stored instructions to display, in the first illustrative figure or the second illustrative figure, a color combination corresponding to the preset period.

5. The electronic device of claim 2 , wherein the first color is displayed at a first relative location predetermined in the first illustrative figure, and

the second color is displayed at a second relative location predetermined in the second illustrative figure.

6. The electronic device of claim 5 , wherein the first color has a color of a first location of a chromaticity coordinate plane, the first location corresponding to the first relative location of the first illustrative figure, and

the second color has a color of a second location of a chromaticity coordinate plane, the second location corresponding to the second relative location of the second illustrative figure.

7. The electronic device of claim 2 , wherein the processor is configured to execute the stored instructions to:

display at least one test figure selected from among the first illustrative figure and the second illustrative figure; and

receive an identification result of the test figure from an external device, and display at least one selected from among the first illustrative figure and the second illustrative figure based on the identification result.

8. The electronic device of claim 2 , wherein the first table comprises a first color combination according to a size of the first illustrative figure,

the second table comprises a second color combination according to a size of the second illustrative figure,

the processor is configured to execute the stored instructions to:

display the first color combination and the second color combination as a test; and

receive an identification result of the first color combination and the second color combination, and control the display to display at least one from among the first color combination and the second color combination based on the identification result.

9. The electronic device of claim 2 , wherein the processor is further configured to execute the stored instructions to change a color, a figure, a line width, or luminance of the first illustrative figure and the second illustrative figure based on a preset period.

10. The electronic device of claim 2 , wherein the processor is further configured to execute the stored instructions to receive a pulse wave sensing result of a pulse wave of a user, and adjust color luminance of the first illustrative figure and the second illustrative figure based on the sensing result of the pulse wave.

11. The electronic device of claim 2 , wherein the processor is further configured to execute the stored instructions to substitute the first table with the second table based on a preset period.

12. The electronic device of claim 2 , wherein the processor is further configured to execute the stored instructions to generate a control signal for notification of substitution of the second table for the first table.

13. The electronic device of claim 12 , wherein the control signal corresponds to a color combination corresponding to the second table, and

the processor is configured to execute the stored instructions to display the color combination.

14. The electronic device of claim 13 , wherein the color combination has a form of a plurality of colors displayed in turn.

15. The electronic device of claim 2 , wherein the first table comprises colors within a first region of a chromaticity coordinate plane divided by a plurality of regions, and

the second table comprises colors within a second region that is different from the first region.

16. The electronic device of claim 2 , wherein the first color is within a first region of a chromaticity coordinate plane divided by a plurality of regions,

the second color is within a second region that is different from the first region, and

the second table is determined based on a relationship between the first region and the second region.

17. The electronic device of claim 2 , wherein the target data comprises audio data.

18. The electronic device of claim 2 , wherein the target data is communicated to an external device by using at least one from among the displayed first color and the displayed second color.

19. An electronic device, comprising:

a memory storing instructions and a first table regarding a relationship between data and colors;

at least one processor configured to execute the stored instructions to:

receive information of light of at least one color from among a first color in a first illustrative figure and a second color in a second illustrative figure displayed on an external device,

wherein the first illustrative figure corresponds to the first table and the second illustrative figure corresponds to a second table;

determine the second table as a substitute for a first table; and

determine target data based on the received light by using the first table or the second table.

20. The electronic device of claim 2 , wherein the first illustrative figure and the second illustrative figure differ from each other, and the second color and the first color differ from each other.