HMD Beacon Reception Period Control for Signal Reliability
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Solution Overview
Problem
Existing reception devices face challenges in reliably receiving beacon signals, particularly when multiple transmission sources are involved, leading to potential signal failure and increased power consumption due to prolonged reception durations.
Innovation Solution
A transmissive display device with a reception unit that intermittently receives beacon signals, adjusting the reception period based on the reception state, signal strength, and transmission timing to optimize signal capture while minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception device lengthens the reception duration to reduce the possibility of beacon signal reception failure, then the reliability of beacon signal reception is improved, but the power consumption increases
Solution Approach 1:
The reception period is made dynamically adjustable based on reception state. The control unit changes the reception period according to whether beacon signals are successfully received, transitioning from a static fixed period to a dynamic adaptive period that optimizes both reliability and power consumption
Solution Approach 2:
A feedback mechanism is implemented where the reception unit monitors the reception state of beacon signals and provides this information to the control unit, which then adjusts the reception period accordingly. This closed-loop control ensures optimal reception reliability while minimizing power consumption
2Use of energy by moving object
If the reception device uses intermittent reception to reduce power consumption, then the power consumption is suppressed, but the beacon signal reception may fail when multiple transmission sources are present
Solution Approach 1:
The reception period is dynamically adjusted based on the reception state. When beacon signals are successfully received, the reception period can be extended to capture signals from multiple transmission sources, while still maintaining lower power consumption compared to continuous reception
Solution Approach 2:
The reception period parameter is changed based on reception state information. The control unit modifies this parameter to optimize the balance between capturing beacon signals from multiple sources and minimizing power consumption
Data Source
AI summary
An HMD includes a beacon reception unit that receives a beacon signal and a control unit that controls a reception period of the beacon reception unit and intermittently receives a beacon signal. The control unit selects the beacon signal based on a reception strength of the beacon signal received by the beacon reception unit and changes a reception period of the beacon signal reception unit in accordance with a transmission timing of the selected beacon signal.