Adaptive Scene Detection Interval Control for Wireless Devices
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Solution Overview
Problem
Current scene detection methods in wireless communication devices, such as smartphones and tablets, lack flexibility and result in excessive battery consumption due to fixed interval detection and reliance on GPS, which is energy-intensive.
Innovation Solution
Implement a method for real-time scene detection using a succession of detection steps with adjustable time intervals based on previous scene detection criteria, incorporating environmental sensors like accelerometers and audio sensors, and employing classification algorithms to filter low-confidence scenes and adapt detection frequency according to scene changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scene detection is performed at fixed intervals, then scene changes can be detected, but power consumption becomes excessive and battery life is reduced
Solution Approach 1:
The patent applies dynamics by making the detection interval adaptive rather than fixed. The system dynamically adjusts the time interval between successive scene detections based on whether scene changes are detected. When scene changes are detected, the interval is reduced to capture changes promptly; when no changes are detected, the interval is extended to conserve energy. This dynamic adjustment resolves the contradiction between maintaining detection accuracy and reducing power consumption.
Solution Approach 2:
The patent changes the parameter of detection interval from a fixed value to a variable parameter that adapts based on scene change detection. By modifying this temporal parameter dynamically, the system achieves both timely detection of scene changes and reduced energy consumption during stable periods, directly addressing the technical contradiction.
2Measurement precision
If GPS is used to locate the user in real time, then scene detection accuracy improves, but energy consumption increases significantly
Solution Approach 1:
The patent extracts the core function of scene detection from GPS-dependent operations and implements it using alternative, lower-power sensors. By removing the requirement for continuous GPS usage and instead using accelerometer, barometer, and other environmental sensors, the system achieves scene detection without the excessive energy consumption associated with real-time GPS location tracking.
Solution Approach 2:
The patent employs low-cost, low-power sensors such as accelerometers and barometers as substitutes for the energy-intensive GPS system. These sensors consume minimal power and provide sufficient data for scene detection when used in combination with adaptive sampling intervals, thereby resolving the contradiction between location accuracy and energy consumption.
3Productivity
If detection frequency is increased to follow scene changes better, then detection accuracy improves, but energy consumption increases
Solution Approach 1:
The patent implements periodic action with variable periods. Instead of continuous or fixed-interval detection, the system performs detections at adaptive periodic intervals that extend when no scene changes are detected and shorten when changes are detected. This variable periodic approach maintains high detection speed for scene changes while significantly reducing energy consumption during stable periods.
Data Source
Figure 1~2
Figure 3
AI summary
Method for controlling the real-time detection of at least one scene by a wireless communication device, comprising a succession of scene detection steps (33) mutually spaced by time intervals and an adjustment (34-37) of the time interval separating a current scene detection step (33) from the previous scene detection step (33) according to at least one adjustment criterion related to at least one previous scene actually detected.