Portable Terminal UWB Overlay for Accurate External Device Selection
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Solution Overview
Problem
Existing wireless communication technologies, such as Bluetooth, struggle with accurate position detection of external devices, especially indoors, leading to difficulties in intuitively selecting the correct device for connection.
Innovation Solution
A portable information terminal equipped with UWB communication and a camera system that calculates the relative position of external devices, overlays device identification information on the captured image, and displays it for intuitive selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Bluetooth broadcast communication is used to search for external devices, then wireless connection capability is achieved, but position detection accuracy deteriorates (measured in meters instead of centimeters)
Solution Approach 1:
The patent combines Bluetooth communication for device discovery with UWB communication for precise positioning. The terminal performs Bluetooth scan to detect external devices, then uses UWB to obtain accurate position information, merging the advantages of both systems to achieve both connectivity and precision positioning.
Solution Approach 2:
The portable information terminal is equipped with multiple communication functions (Bluetooth and UWB) that serve different purposes: Bluetooth for device discovery and connection, UWB for precise positioning. This multi-functionality allows the system to address both wireless connectivity and accurate position detection requirements.
2Adaptability or versatility
If GPS-based position information is used, then position detection is achieved, but applicability deteriorates (cannot be used indoors or where GPS signals are unavailable)
Solution Approach 1:
The patent changes the positioning parameter from GPS-based global positioning to UWB-based relative positioning. UWB measures distance based on time of flight of electromagnetic waves, providing centimeter-level accuracy without requiring satellite signals, thus enabling indoor and indoor-like environments.
3Ease of operation
If relative position is displayed on a screen, then position information is provided, but ease of operation deteriorates (user must manually match displayed position with actual device)
Solution Approach 1:
The patent introduces camera imaging as an intermediary to bridge the gap between position information and visual identification. The camera captures images of the surrounding environment, and the system overlays position information on these images, allowing users to visually identify devices based on their actual appearance and location.
Solution Approach 2:
The patent transitions from two-dimensional screen display to three-dimensional spatial overlay by combining camera images with position information in the actual spatial environment. This allows position data to be presented in the context of the real-world view captured by the camera, making device identification more intuitive.
Data Source
AI summary
A portable information terminal is provided with a first communication function and a second communication function that can be wirelessly connected to the external device, a camera that captures video of a surrounding of the portable information terminal, a video processing unit that processes the video captured by the camera, a display that displays the video processed by the video processing unit, a memory unit that stores first identification information of the external device used for the first communication function, and second identification information of the external device used for the second communication function, and a control unit. The control unit calculates a relative position of the external device to the portable information terminal using the second communication function, and generates an overlaid video in which the first identification information is overlaid on the calculated relative position of an external device in the video and displays it on the display.