Display Device User Detection Power Control
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Solution Overview
Problem
Portable display devices face challenges in power management due to limited battery capacity and the need for secure user authentication, as they can be easily shared among multiple users, leading to potential misuse and increased power consumption.
Innovation Solution
A display device equipped with a camera unit for user detection, a sensor unit for input recognition, and a control unit that maintains or deactivates the display and processes user input based on the presence and identity of a predetermined master user, optimizing power usage and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display device maintains display and processes user input for multiple users, then user convenience is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts display state and user input processing based on real-time user detection results. When a master user is detected, the display remains active and processes input; when only guest users are detected or no users are present, the display is deactivated and input processing is restricted, thereby adapting system behavior to current usage conditions to optimize power consumption while maintaining user convenience
2Adaptability or versatility
If the display device is shared among multiple users, then adaptability is improved, but security deteriorates
Solution Approach 1:
The system applies different access control policies to different users based on their identity. Master users receive full access permissions while guest users receive restricted access. This localized quality control allows the device to support multiple users adaptably while maintaining security by ensuring that not all users have equal access rights to all functions
3Ease of operation
If the display remains active for guest users, then user convenience is improved, but power consumption increases
Solution Approach 1:
The system provides partial functionality to guest users without maintaining full display activation. When guest users are detected, the display may show limited information or remain in a lower power state, and user input processing is restricted to basic operations. This partial action approach provides sufficient convenience for guest users while avoiding the excessive power consumption of full display activation
Data Source
AI summary
A display device is disclosed. A display device according to an embodiment of the present specification includes a display unit configured to display visual information, a camera unit configured to capture an image in front of the display device, a sensor unit configured to sense user input applied to the display device, and a control unit configured to control the display device, wherein the control unit detects at least one user from the captured image, maintains display of the visual information and processes received user input when the detected user includes a predetermined master user, the control unit detects at least one user from the captured image, maintains display of the visual information and does not process the received user input when the detected user does not include the predetermined master user, and the control unit deactivates the display unit when no user is detected in the captured image.