Display Brightness Control for HDR Power Management
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Solution Overview
Problem
Current display apparatuses, especially non-HDR display apparatuses, struggle to accurately display the gradation of HDR image data due to limitations in power consumption and temperature management, leading to restricted display capabilities and inability to handle high brightness levels effectively.
Innovation Solution
A display apparatus with a controllable light-emitting unit and a display panel that adjusts brightness based on different modes, including a mode where the upper-limit display brightness is lowered in certain conditions to manage power consumption and temperature, allowing for HDR assistance display while maintaining image gradation fidelity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display brightness is increased to display HDR image data with high fidelity, then the display capability and image quality are improved, but the power consumption and temperature of the display apparatus increase significantly
Solution Approach 1:
The patent applies dynamics by making the display brightness adjustable and controllable based on different operating modes. The control unit dynamically changes the upper-limit display brightness between a first value (higher) and a second value (lower) depending on whether graphic images are displayed, allowing the system to adapt its brightness level to current operational requirements rather than maintaining a fixed high brightness level
Solution Approach 2:
The patent implements parameter changes by modifying the display brightness parameter between two distinct states. The control unit changes the upper-limit display brightness parameter from a first value to a second value based on the presence of graphic images, effectively using parameter adjustment to balance display quality and power consumption
2Illumination intensity
If the display brightness is increased to display HDR image data with high fidelity, then the display capability is improved, but the temperature of the display apparatus increases
Solution Approach 1:
The patent applies dynamics by making the display brightness adjustable and controllable based on different operating modes. The control unit dynamically changes the upper-limit display brightness between a first value (higher) and a second value (lower) depending on whether graphic images are displayed, allowing the system to adapt its brightness level to current operational requirements rather than maintaining a fixed high brightness level
Solution Approach 2:
The patent implements parameter changes by modifying the display brightness parameter between two distinct states. The control unit changes the upper-limit display brightness parameter from a first value to a second value based on the presence of graphic images, effectively using parameter adjustment to balance display quality and temperature
3Use of energy by moving object
If the upper-limit display brightness is reduced to lower power consumption, then the power consumption is reduced, but the ability to display HDR image data with high fidelity is compromised
Solution Approach 1:
The patent applies dynamics by making the display brightness adjustable and controllable based on different operating modes. The control unit dynamically changes the upper-limit display brightness between a first value (higher) and a second value (lower) depending on whether graphic images are displayed, allowing the system to adapt its brightness level to current operational requirements rather than maintaining a fixed high brightness level
Solution Approach 2:
The patent applies partial action by using high display brightness only when necessary (when graphic images are displayed) and reducing brightness when full HDR fidelity is not required. This partial use of high brightness capability allows the system to maintain HDR functionality when needed while reducing power consumption during other operations
4Temperature
If the upper-limit display brightness is reduced to manage temperature, then the temperature is controlled, but the display capability for HDR image data is limited
Solution Approach 1:
The patent applies dynamics by making the display brightness adjustable and controllable based on different operating modes. The control unit dynamically changes the upper-limit display brightness between a first value (higher) and a second value (lower) depending on whether graphic images are displayed, allowing the system to adapt its brightness level to current operational requirements rather than maintaining a fixed high brightness level
Solution Approach 2:
The patent implements parameter changes by modifying the display brightness parameter between two distinct states. The control unit changes the upper-limit display brightness parameter from a first value to a second value based on the presence of graphic images, effectively using parameter adjustment to balance display quality and temperature
Data Source
AI summary
A display apparatus according to the present invention, includes: a light-emitting unit of which light emission brightness is controllable; a display panel configured to transmit light from the light-emitting unit and display an image; an operation unit configured to receive an operation for instructing a mode to be set, out of a plurality of modes including a first mode in which a first image including an input image and not including a graphic image is displayed and a second mode in which a second image including the input image and the graphic image is displayed; and a control unit configured to perform brightness control for controlling the light emission brightness of the light-emitting unit so that an upper-limit display brightness in the second mode is lower than an upper-limit display brightness in the first mode.