Electronic device and display control method thereof

• US 10,446,091 B2
• Filed: 02/23/2015
• Issued: 10/15/2019
• Est. Priority Date: 02/22/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Kee Hyon, Park, Dae Keun, Lee, Hun Hee, Kim, Jae Uk, Kim, Choon Woo, Park, Gyoung Soo, Jang, Hye Sung
• Primary Examiner(s): Harris, Dorothy
• Application Number:
  US14/628,639
• Publication Number:
  US 20150243227A1
• Time in Patent Office: 1,695 Days
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources

Abstract

A display control method of an electronic device is provided. The display control method includes sensing, by the electronic device, a chromaticity and an illuminance of an incident light, calculating an optimal white of a display based on the chromaticity of the incident light, and correcting the calculated optimal white by using the illuminance of the incident light.

Claims

1. A method for displaying content on a display of an electronic device, the method comprising:

sensing, by at least one sensor included in the electronic device, chromaticity and illuminance of a light;

determining, by at least one processor included in the electronic device, whether the sensed illuminance of the light is above or below a first reference illuminance;

displaying the content on the display based on a first white value calculated using at least the sensed chromaticity when the sensed illuminance of the light is above the first reference illuminance; and

displaying, when the sensed illuminance of the light is below the first reference illuminance, the content on the display based on a second white value, calculated to correct optimal white at the sensed illuminance by linearly interpolating the second white value from between a predetermined red (R), green (G), and blue (B) (RGB) grayscale value of the optimal white at the first reference illuminance and a maximum grayscale value.

2. The method of claim 1, wherein the first white value is calculated by interpolating the optimal white between an RGB grayscale value of the optimal white at the first reference illuminance and an RGB grayscale value of the optimal white at a second reference illuminance by using a logarithmic function, when the illuminance of the light is above the first reference illuminance and below the second reference illuminance.

3. The method of claim 1, wherein displaying the content on the display based on the first white value includes:

classifying color types of the light; and

setting any one of grayscale values of RGB of the chromaticity as a maximal grayscale value based on the classified color types, and

calculating grayscale values in the optimal white for any remaining RGB for which the grayscale values of the chromaticity are not set as the maximal grayscale value.

4. The method of claim 3, wherein the classifying of the color types of the light includes normalizing grayscale values of RGB of the chromaticity of the light.

5. An electronic device comprising:

a display configured to display a content;

at least one sensor configured to sense chromaticity and illuminance of a light;

a memory storing instructions; and

at least one processor electronically connected to the display, the at least one sensor, and the memory, and configured to execute the stored instructions to;

determine whether the sensed illuminance of the light is above a first reference illuminance,

control the display to display the content based on a first white value calculated using at least the sensed chromaticity when the sensed illuminance of the light is above the first reference illuminance, and

control the display to display, when the sensed illuminance of the light is below the first reference illuminance, the content based on a second white value, calculated to correct optimal white at the sensed illuminance by linearly interpolating the second white value from between a red (R), green (G), and blue (B) (RGB) grayscale value of the optimal white at the first reference illuminance and a maximum grayscale value.

6. The electronic device according to claim 5, wherein the first white value is calculated by interpolating the optimal white between an RGB grayscale value of the optimal white at the first reference illuminance and an RGB grayscale value of the optimal white at a second reference illuminance by using a logarithmic function, when the illuminance of the light is above the first reference illuminance and below the second reference illuminance.

7. The electronic device according to claim 5, wherein the at least one processor is further configured to calculate the first white value based on a relative arrangement of the at least one sensor and the display.

8. The electronic device according to claim 7, wherein the at least one processor is further configured to calculate the first white value according to the light irradiated on the display, when the at least one sensor is arranged in a same direction as the display.

9. The electronic device according to claim 7, wherein the at least one processor is further configured to calculate the first white value according to a reflection light reflected by an object around the electronic device, when the at least one sensor is arranged in a different direction from the display.

10. The electronic device according to claim 5, wherein the first white value is calculated based on a first set of RGB grayscale values and the second white value is calculated based on a second set of RGB grayscale values.

11. The electronic device according to claim 10, wherein the first set of RGB grayscale values is based on grayscale values with the optimal white experimentally determined and previously stored.

12. The electronic device according to claim 10, wherein the second set of RGB grayscale values is calculated based on minimizing an effect of an incident light on a screen of the electronic device.