Multispectral Sensor ROI Scanning for High-Frame-Rate Measurements
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Solution Overview
Problem
Existing multispectral sensor devices face challenges in achieving high resolution, high bit depth, and high frame rates due to limitations in data transfer rates, particularly in space-constrained consumer electronics applications, leading to difficulties in capturing time-dependent health parameters accurately.
Innovation Solution
Implementing region-of-interest (ROI) processing through partial scanning or windowing techniques for time-sensitive measurements, allowing high frame rates and accurate time-sensitive measurements without exceeding data bus rates, while maintaining high resolution and bit depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full sensor array data collection is used to achieve high resolution and high bit depth, then measurement precision is improved, but data transfer rate becomes a bottleneck preventing high frame rates
Solution Approach 1:
The patent segments the sensor array data collection into two distinct modes: full array collection for high-resolution spectral measurements and region-of-interest (ROI) collection for time-sensitive measurements. This segmentation allows the system to optimize data collection based on measurement requirements, achieving high frame rates for time-critical applications while maintaining the capability for high-precision full-array measurements when needed.
Solution Approach 2:
The patent implements partial action by collecting data only from selected regions or channels of the sensor array when time sensitivity is the primary concern. Instead of collecting data from the entire sensor array for every measurement, the system selectively activates only the necessary channels or regions, thereby reducing data transfer volume and enabling high frame rates without sacrificing measurement capability for time-dependent parameters.
2Speed
If ROI processing is implemented to achieve high frame rates, then speed is improved, but device complexity increases due to partial scanning or windowing techniques
Solution Approach 1:
The patent employs dynamic switching between full array mode and ROI mode based on the time sensitivity requirements of the measurement task. The system can adaptively adjust the data collection strategy in real-time, selecting the appropriate mode (full array or ROI) depending on whether the application requires maximum precision or maximum speed, thereby managing device complexity through flexible, context-dependent operation.
3Measurement precision
If full sensor array is activated for all measurements, then measurement precision is maintained, but loss of time occurs due to data transfer rate limitations
Solution Approach 1:
The patent applies partial action by collecting data only from selected regions or channels of the sensor array when time sensitivity is the primary concern. Instead of collecting data from the entire sensor array for every measurement, the system selectively activates only the necessary channels or regions, thereby reducing data transfer volume and enabling high frame rates without sacrificing measurement capability for time-dependent parameters.
Data Source
AI summary
A multispectral sensor device may include a sensor array comprising a plurality of channels and one or more processors to determine that a time-sensitive measurement is to be performed, wherein the time-sensitive measurement is to be performed using data collected by one or more channels of the plurality of channels; cause the data to be collected by a proper subset of channels, of the plurality of channels, wherein the proper subset of channels includes the one or more channels; and determine the time-sensitive measurement based on the data.