Secondary Display Power Gating for Rights-Based Content Display
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Solution Overview
Problem
Existing electronic devices with multiple displays face challenges in efficiently managing power consumption and content display on secondary displays, particularly when interacting with external devices or entering designated areas, and lack effective methods for secure content transmission.
Innovation Solution
The electronic device incorporates a power management integrated circuit (PMIC) to control power to secondary displays, uses secure elements for content rights management, and includes communication circuitry for secure content transmission to external devices based on location and usage rights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is continuously supplied to the second display, then content can be displayed, but power consumption increases
Solution Approach 1:
The patent implements periodic power supply to the second display by detecting user proximity through the first display and only supplying power when needed. The PMIC controls power supply based on proximity detection results, enabling the display to operate periodically rather than continuously, thus reducing power consumption while maintaining display functionality when required.
Solution Approach 2:
The system uses the first display to detect user proximity and automatically trigger power supply to the second display without requiring manual intervention. The proximity detection mechanism serves itself by using the existing display infrastructure to control power distribution, eliminating the need for separate user input mechanisms.
2Adaptability or versatility
If the electronic device transmits content to external devices, then sharing capability is improved, but security risks increase
Solution Approach 1:
The patent introduces a secure element as an intermediary between the content storage and transmission processes. The secure element verifies usage rights and authenticates content before transmission to external devices, acting as a mediator that prevents unauthorized access while enabling legitimate sharing. This intermediary layer maintains security without blocking the sharing functionality.
3Adaptability or versatility
If the second display operates independently, then display functionality is improved, but power management complexity increases
Solution Approach 1:
The patent merges the power management functions for both displays into a single PMIC that coordinates power supply based on proximity detection. Instead of independent power management systems, the integrated approach combines control logic to determine when the second display should operate, reducing overall system complexity while maintaining flexible display functionality.
Data Source
AI summary
An electronic device can obtain an input for displaying content. The electronic device can identify a right to use the content through information about the right to use the content on the basis of obtaining the input for displaying the content. The electronic device, in response to identifying that the right to use the content exists, can control a PMIC to supply power to a second display to display the content. The electronic device can control the second display to display the content through the second display while the power is being supplied. The electronic device can control the PMIC to stop supplying power to the second display on the basis of the content being displayed on the second display.