AR Terminal IR Light Timing Coordination
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Solution Overview
Problem
In augmented reality (AR) applications, the interference of infrared (IR) light emissions from multiple terminals during distance measurement leads to decreased accuracy of depth information.
Innovation Solution
An information processing apparatus with a control unit that coordinates the timing of IR light emissions from different terminals to avoid overlap, ensuring accurate distance measurement and depth information acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals emit IR light simultaneously for distance measurement, then distance measurement can be performed by each terminal, but the rays of IR light interfere with each other causing decreased measurement accuracy
Solution Approach 1:
The patent implements periodic time-division multiplexing where each terminal emits IR light in alternating time slots. Terminal A emits during its designated period while Terminal B waits, then Terminal B emits during its period while Terminal A waits. This periodic scheduling ensures that light emissions do not overlap in time, eliminating interference while maintaining the distance measurement capability of both terminals.
2Measurement precision
If terminals coordinate light emission timing to avoid overlap, then measurement accuracy is maintained, but communication overhead and system complexity increase
Solution Approach 1:
The patent combines the timing coordination function with the existing communication infrastructure between terminals. The control unit uses the communication unit to exchange timing information with other terminals, integrating the scheduling mechanism into the standard communication protocol rather than requiring a separate dedicated coordination system. This reduces overall system complexity while maintaining measurement accuracy.
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
Prevents interference between IR light emissions from multiple terminals, thereby maintaining or improving the accuracy of depth information acquired through distance measurement.
Implementation Method 1
a first light emission unit configured to perform light emission of invisible light for performing distance measurement
Implementation Method 2
a first acquisition unit configured to acquire depth information of a real space on the basis of the light emission by the first light emission unit
Data Source
AI summary
Provided is an information processing apparatus that avoids interference of rays of light to be emitted from respective terminals for performing distance measurement. The information processing apparatus includes a first light emission unit that performs light emission of invisible light for performing distance measurement, a first acquisition unit that acquires depth information of a real space on the basis of the light emission by the first light emission unit, a control unit that controls the light emission by the first light emission unit, and a communication unit that performs communication with another information processing apparatus. The control unit performs control causing the first light emission unit to perform the light emission at a timing not overlapping a light emission timing of a second light emission unit of the other information processing apparatus, on the basis of the communication with the other information processing apparatus.