Projector User Data Correlation and Power State Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing information processing devices require constant power to maintain user data, which is inconvenient and does not effectively prevent information leakage when powered off.
Innovation Solution
An information processing method and system that correlates user information with a display device, canceling the correlation when powered off but maintaining it during standby, ensuring user data is securely erased when the device is turned off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the information processing device deletes data when powered off to prevent information leakage, then security is improved, but user convenience deteriorates because the device must remain powered on to maintain data
Solution Approach 1:
The patent applies dynamics by making the data retention behavior adaptive to the device's power state. The system dynamically adjusts whether to maintain or delete data based on whether the device is in standby mode or fully powered off, allowing the security and convenience characteristics to change according to operational conditions rather than being fixed
2Ease of operation
If the information processing device maintains data continuously to improve user convenience, then ease of operation is improved, but security deteriorates because data may leak when the device is powered off
Solution Approach 1:
The system dynamically changes its data retention behavior based on power state. In standby mode, data is maintained for user convenience, but when fully powered off, data is deleted for security. This dynamic adaptation resolves the contradiction by allowing both security and convenience to be optimized at different operational stages
3Reliability
If the device deletes all data when powered off to ensure security, then security is improved, but loss of information increases requiring users to re-input data
Solution Approach 1:
The patent segments the power-off process into two distinct states: standby mode and full power-off mode. In standby mode, user data is preserved, but in full power-off mode, data is deleted. This segmentation allows the system to provide different data retention behaviors for different operational states, reducing unnecessary data loss while maintaining security when truly powered off
Data Source
AI summary
A processing device of a projector performs control for correlating user information used by the application software with a projector. The processing device operates in a first mode including performing control for cancelling the correlation between the user information and the projector when the projector is powered off and maintaining the correlation between the user information and the projector when the projector shifts to the standby state.