Radar-Detectable Display Patterns for Device Orientation and Gestures
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Solution Overview
Problem
Existing technologies struggle to accurately determine the orientation, position, size, and gestures associated with a device without being in line of sight using radar devices.
Innovation Solution
Generating a display pattern with spatial variations on a user device that can be detected by a radar device, allowing determination of orientation, position, size, and gestures through features such as asymmetrical shapes, temporal patterns, and machine learning algorithms to enhance detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional radar devices are used for detection, then the device can perform basic detection functions, but the measurement precision for orientation, position, size, and gestures is insufficient
Solution Approach 1:
The display acts as an intermediary element that reflects radar signals. By displaying patterns on the display surface, the display itself becomes part of the detection system, enabling the radar to detect orientation and position information through the reflected signals without requiring direct line of sight to the device.
Solution Approach 2:
The display patterns create variations in signal reflection characteristics. Different display patterns (such as asymmetrical shapes, temporal patterns) modify the radar signal reflection in distinguishable ways, allowing the radar to detect and differentiate between various device orientations and positions based on these reflection variations.
2Measurement precision
If display patterns are generated to enhance detection, then the radar can determine orientation and position more accurately, but the device complexity increases
Solution Approach 1:
The display serves multiple functions: it displays normal content for user interaction and simultaneously displays detection patterns for radar-based orientation and position detection. This multi-functionality avoids adding separate dedicated hardware for detection, thereby limiting the increase in device complexity.
Solution Approach 2:
The display patterns are displayed periodically or in sequences (such as temporal patterns). This periodic display enables the radar to detect orientation information through time-varying signal reflections, allowing accurate detection without requiring complex continuous display configurations.
3Measurement precision
If complex display patterns with spatial variations are used, then the radar can detect gestures and orientation more accurately, but the loss of time for pattern generation and display increases
Solution Approach 1:
Display patterns are shown in periodic sequences rather than continuously. The radar detects orientation and gesture information from these periodic patterns, allowing the system to minimize display time while maintaining detection accuracy. The periodic nature enables the radar to capture sufficient information from each pattern cycle.
Solution Approach 2:
The display patterns are designed in advance with specific spatial variations that are known to be detectable by the radar. By pre-configuring the patterns with optimal characteristics for radar detection, the system reduces the time needed for pattern generation and ensures efficient information transmission for gesture and orientation detection.
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
Enables radar devices to accurately determine the orientation, position, and gestures of a user device even when not in line of sight, improving interaction capabilities and authentication processes.
Implementation Method 1
a first radar device, of at least one of: an orientation of a display of a user device, position of a display of the user device, size of a display of the user device, or one or more gestures associated with the user device
Data Source
AI summary
An apparatus, method and computer program is described including: generating a display pattern including features with spatial variations, wherein the spatial variations are configured to enable determination, by a first radar device, of at least one of an orientation of a first user device, position of the first user device, size of a display of the first user device, or one or more gestures associated with the display.