Display apparatus and method for controlling the same

• US 10,204,593 B2
• Filed: 04/13/2016
• Issued: 02/12/2019
• Est. Priority Date: 04/21/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Min-woo, Choe, Won-hee, Cho, Seung-hwan, Cho, Jae-hun, Choi, Jae-won
• Primary Examiner(s): Wu, Sing-Wai
• Application Number:
  US15/097,448
• Publication Number:
  US 20160314762A1
• Time in Patent Office: 1,035 Days
• CPC Class Codes: G09G 2320/0271 Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: G09G 5/37 Details of the operation on graphic patterns G09G5/38 takes precedence

Abstract

A display apparatus includes a display configured to display content, a sensor configured to sense ambient light, and a processor configured to, in response to the ambient light satisfying a predetermined condition, divide the screen into at least a first area and a second area based on an attribute of the content and individually control a first output luminance of the first area and a second output luminance of the second area.

Claims

1. A display apparatus comprising:

a display;

a sensor; and

a processor configured to;

control the display to display,

identify, based on ambient light sensed by the sensor satisfying a predetermined condition, at least a first area and a second area of a content based on an attribute of the content,

identify a priority order of the first area and the second area, the priority order being information regarding an order of an output luminance to reach a target luminance,

identify an interested area and an uninterested area among the first area and the second area based on the priority order, and

individually control a first output luminance of the interested area and a second output luminance of the uninterested area,

wherein the processor is configured to control the first output luminance to reach a first target luminance before the second output luminance reaches a second target luminance based on a first luminance varying time of the first output luminance and a second luminance varying time of the second output luminance.

2. The apparatus as claimed in claim 1, wherein the first output luminance is different than the second output luminance.

3. The apparatus as claimed in claim 1, wherein the processor is further configured to divide the content into the first area and the second area based on at least one among the ambient light satisfying the predetermined condition, an event in which the ambient light changes rapidly by an amount greater than a predetermined critical value, an event in which the display is converted from a dark screen to a bright screen while the ambient light is lower than a certain luminance, and an event in which a state of the display is converted from an inactive state to an active state while the ambient light is lower than the certain luminance.

4. The apparatus as claimed in claim 1, wherein the first area corresponds to the interested area and the second area corresponds to the uninterested area,

wherein the first area and the second area are identified based on the attribute of the content.

5. The apparatus as claimed in claim 4, wherein the processor is further configured to, based on a state of the display being converted from an inactive state to an active state and the ambient light being lower than a predetermined critical luminance, control the first output luminance to reach the first target luminance before the second output luminance reaches the second target luminance.

6. The apparatus as claimed in claim 4, wherein the processor is further configured to, based on the ambient light being lower than a predetermined critical luminance, control the second output luminance to be lower than the first output luminance.

7. The apparatus as claimed in claim 4, wherein the processor is further configured to, based on the ambient light being higher than a predetermined critical luminance, control the first output luminance to be lower than the second output luminance.

8. The apparatus as claimed in claim 1, wherein the first area is on a first display layer and the second area is on a second display layer.

9. The apparatus as claimed in claim 1, wherein the processor is further configured to identify the first area by identifying a gradation section corresponding to a predetermined gradation condition.

10. The apparatus as claimed in claim 9, wherein the processor is further configured to, based on the attribute of the content indicating high contrast, reduce the first output luminance, and

wherein the predetermined gradation condition comprises a gradation higher than a predetermined critical value.

11. A method for controlling a display apparatus, the method comprising:

identifying whether ambient light satisfies a predetermined condition;

identifying, based on the ambient light satisfying the predetermined condition, at least a first area and a second area of a display content based on an attribute of the display content;

identifying a priority order of the first area and the second area, the priority order being information regarding an order of an output luminance to reach a target luminance;

identifying an interested area and an uninterested area among the first area and the second area based on the priority order,

individually controlling a first output luminance of the interested area and a second output luminance of the uninterested area; and

displaying the interested area at the first output luminance and the uninterested area at the second output luminance,

wherein the controlling comprises controlling the first output luminance to reach a first target luminance before the second output luminance reaches a second target luminance based on a first luminance varying time of the first output luminance and a second luminance varying time of the second output luminance.

12. The method as claimed in claim 11, wherein the individually controlling comprises individually controlling the first output luminance to be different from the second output luminance.

13. The method as claimed in claim 11, wherein the dividing is performed based on at least one among the ambient light satisfying the predetermined condition, an event in which the ambient light changes rapidly by an amount greater than a predetermined critical value, an event in which a state of the display apparatus is converted from a dark screen to a bright screen while the ambient light is lower than a certain luminance, and an event in which the state of the display apparatus is converted from an inactive state to an active state while the ambient light is lower than the certain luminance.

14. The method as claimed in claim 11, wherein the first area corresponds to the interested area and the second area corresponds to the uninterested area,

wherein the first area and the second area are identified based on the attribute of the display content.

15. A method of displaying content comprising:

analyzing display content to identify a first area of a display content comprising a first luminance and a second area of the display content comprising a second luminance;

sensing an ambient light level;

comparing the sensed ambient light level to a threshold ambient light level;

modifying the first luminance and the second luminance based on the comparing;

identifying a priority order of the modified first luminance and the modified second luminance, the priority order being information regarding an order of an output luminance to reach a target luminance;

identifying an interested area and an uninterested area among the modified first luminance and the modified second luminance based on the priority order; and

displaying the display content of the interested area at the modified first luminance and the uninterested area at the modified second luminance,

wherein the modifying comprises controlling the modified first luminance to reach a first target luminance before the modified second luminance reaches a second target luminance based on a first luminance varying time of the modified first luminance and a second luminance varying time of the modified second luminance.

16. The method as claimed in claim 15, wherein based on the sensed ambient light level being less than the threshold ambient light level, the modified first luminance is greater than the first luminance.

17. The method as claimed in claim 16, wherein the modified second luminance is less than the second luminance.

18. The method as claimed in claim 15, wherein based on the sensed ambient light level being greater than the threshold ambient light level, the modified first luminance is less than the first luminance.