Electronic Device Positioning via Virtual Sound Source Correction
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Solution Overview
Problem
Existing positioning technologies for portable electronic devices, such as those used in virtual reality applications, face challenges in accurately determining relative distance, velocity, and acceleration when obstacles block the line of sight or sound signal path between the device and a fixed host, leading to determination errors.
Innovation Solution
An electronic device equipped with a sound receiver and processor that estimates a virtual position based on previous movement information and image analysis to correct relative distance calculations, using sound signals and virtual sound source corrections to calculate relative velocity and acceleration, even when obstacles are present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only image positioning method is used, then positioning can be performed, but positioning accuracy deteriorates when obstacle blocks the line of sight
Solution Approach 1:
The patent combines image positioning method and sound positioning method into a unified positioning system. The processor integrates both imaging information and sound signal information to determine relative position, thereby maintaining positioning accuracy and reliability even when obstacles block the line of sight between the electronic device and fixed device.
Solution Approach 2:
The patent introduces sound signals as an intermediary medium for positioning. When visual line of sight is blocked, the sound positioning method uses sound waves that can penetrate or diffract around obstacles to provide alternative positioning information, mediating the positioning function when direct visual contact is unavailable.
2Measurement precision
If only sound positioning method is used, then positioning can be performed, but determination errors increase due to transmission path changes
Solution Approach 1:
The patent merges image positioning and sound positioning methods into a comprehensive system. By combining both methods, the system leverages the strengths of each: image positioning provides accurate visual data when available, while sound positioning supplements when visual contact is blocked, thereby improving overall accuracy without excessively increasing complexity.
Solution Approach 2:
The processor dynamically selects and switches between image positioning and sound positioning methods based on real-time conditions. When obstacles block the visual path, the system transitions to sound positioning; when visual contact is restored, it returns to image positioning. This feedback mechanism optimizes accuracy while managing system complexity.
3Reliability
If virtual position estimation is used when obstacle blocks path, then positioning continuity is maintained, but calculation complexity increases
Solution Approach 1:
The processor pre-calculates virtual positions based on sound signal data before actual positioning is needed. By preparing virtual position information in advance when the electronic device is in visible range, the system can quickly switch to using pre-computed virtual positions when obstacles block the path, maintaining positioning continuity while managing calculation complexity through advance preparation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively obtains accurate relative distance, velocity, and acceleration data between the electronic device and a fixed device, even when obstacles block the direct path, by integrating image and sound signal analysis to ensure precise positioning information.
Implementation Method 1
a sound receiver and a processor. The sound receiver is configured to receive a sound signal provided by a sound generator
Data Source
AI summary
An electronic device including a sound receiver and a processor is provided. The sound receiver receives a sound signal provided by a sound generator. When the processor determines that an obstacle is blocked between the electronic device and the fixed device, the processor estimates a virtual position of the electronic device at a current time according to previous movement information and a previous position of the electronic device. The virtual position has a shortest path between a boundary position of the obstacle and the sound generator. The processor obtains a first relative distance between the electronic device and the boundary position according to the sound signal received by the sound receiver and the boundary position. The processor calculates a relative velocity and a relative acceleration of the electronic device relative to the fixed device at the current time according to the sound signal and the first relative distance.