UWB Ranging Interval Control for Zoom-Adjusted Subject Tracking
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Solution Overview
Problem
Electronic devices with zoom functions face challenges in accurately measuring the movement distance of subjects using depth cameras, as the measured distances can differ significantly between zoom-in and zoom-out functions, leading to inconsistencies in autofocus and image stabilization.
Innovation Solution
An electronic device equipped with a UWB communication module and processor that adjusts the transmission interval of ranging messages based on the magnification of the image, allowing for precise control of wireless communication signals and improved tracking of moving subjects across varying distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the transmission interval of ranging messages is fixed, then the communication system is simple to implement, but the measurement precision of subject movement distance deteriorates when zoom magnification changes
Solution Approach 1:
The patent applies dynamics by making the transmission interval of ranging messages variable rather than fixed. The control processor dynamically adjusts the transmission interval based on the current zoom magnification level - using shorter intervals at higher magnifications where subject movement appears more significant, and longer intervals at lower magnifications. This dynamic adaptation resolves the contradiction by improving measurement precision when needed while avoiding unnecessary complexity when not required.
Solution Approach 2:
The patent changes the parameter of transmission interval based on zoom magnification level. The control processor determines the appropriate transmission interval by referencing a predefined relationship between magnification levels and intervals, adjusting this communication parameter to match the current imaging conditions. This parameter change approach allows the system to maintain high measurement precision across different zoom levels without implementing overly complex real-time calculation mechanisms.
2Measurement precision
If the transmission interval of ranging messages is shortened to improve tracking accuracy, then the measurement precision of subject movement improves, but the energy consumption increases
Solution Approach 1:
The patent optimizes energy consumption by changing the transmission interval parameter based on zoom magnification. At higher magnification levels where precise tracking is more critical, the system uses shorter intervals; at lower magnification levels, it extends the intervals to reduce energy consumption. This adaptive parameter adjustment resolves the contradiction by matching communication frequency to actual tracking requirements.
Solution Approach 2:
The system dynamically adjusts the transmission interval based on current operational conditions (zoom level and subject movement characteristics). Rather than using a constantly short interval that would waste energy, the system transitions between different interval lengths according to need, thereby improving tracking precision when necessary while conserving energy during normal operation.
3Use of energy by moving object
If the transmission interval of ranging messages is extended to reduce energy consumption, then the energy efficiency improves, but the measurement precision of subject movement deteriorates
Solution Approach 1:
The patent implements conditional parameter changes where the transmission interval is extended only when zoom magnification is low and subject movement is less critical. When magnification increases, the system automatically switches to shorter intervals to maintain measurement precision. This conditional approach resolves the contradiction by extending intervals for energy efficiency only when it does not compromise required measurement accuracy.
Solution Approach 2:
The system dynamically transitions between different transmission interval lengths based on real-time conditions. Rather than using a constantly long interval that would always compromise precision, the system adapts the interval length to match current tracking requirements, extending intervals during stable low-magnification viewing while shortening them when precise tracking becomes necessary.
Data Source
AI summary
An electronic device and method thereof are provided. An electronic device includes a UWB communication module configured to transmit a first ranging message, at a first transmission interval, for measuring at least one of a distance to or a direction of an external electronic device; a display; and a processor configured to display, on the display, an image of a first magnification in correspondence to the measured distance to and/or direction of the external electronic device; adjust the magnification of the image to a second magnification; and control, based on the second magnification, the UWB communication module to transmit a second ranging message, to the external electronic device, at a second transmission interval.