Multi-Camera A/V Layout for Wide-Angle Motion Detection
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Solution Overview
Problem
Existing audio/video recording and communication devices lack effective motion detection and image capturing capabilities, particularly in expanding the field-of-view and integrating high and low-resolution cameras for enhanced security and notification functionalities.
Innovation Solution
The device incorporates multiple passive infrared (PIR) sensors and cameras arranged at different orientations and angles across the front and sides of the device, with high and low-resolution cameras, to enhance motion detection and image capturing, including panoramic image stitching and power-efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras are used to expand field-of-view and improve motion detection, then image capturing capability is improved, but device complexity increases
Solution Approach 1:
The patent divides the imaging system into multiple cameras positioned at different locations (front, side, and rear cameras) to capture different fields of view. This segmentation allows comprehensive motion detection across multiple zones while maintaining manageable complexity through modular camera units.
Solution Approach 2:
The patent adds spatial dimensionality by positioning cameras at multiple orientations (front-facing, side-facing, rear-facing) rather than relying on a single camera. This multi-dimensional arrangement expands the field of view and improves motion detection coverage without requiring excessive complexity in any single camera system.
2Measurement precision
If high-resolution cameras are used to improve video recording quality, then image quality is improved, but power consumption increases
Solution Approach 1:
The patent employs different resolution cameras in different locations based on their specific functional requirements. Front and side cameras use high-resolution sensors for detailed monitoring, while the rear camera uses a lower-resolution sensor sufficient for basic motion detection, optimizing power consumption according to local quality needs.
Solution Approach 2:
The system uses high-resolution imaging only where and when necessary (front and side cameras during active monitoring), while relying on lower-resolution rear cameras for continuous background monitoring. This partial application of high-resolution capability reduces overall power consumption while maintaining image quality where critical.
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
The solution provides improved motion detection and expanded field-of-view, enabling effective alerts and clear video recording, while optimizing power consumption through the use of low-resolution cameras during daylight and motion detection.
Implementation Method 1
one or more motion sensors (e.g., passive infrared (PIR) sensors) for detecting motion
Data Source
Figure 1
Figure 2A~2C
Figure 3A~3C
AI summary
An audio/video recording and communication device (A/V device) including one or more motion sensors arranged in a first row, a first camera, one or more second cameras arranged in a second row, a first cover disposed over the one or more motion sensors, a second cover disposed over the first camera, and a third cover disposed over the one or more second cameras. The one or more motion sensors may include a first motion sensor having a first orientation, a second motion sensor having a second orientation, and a third motion sensor having a third orientation. Additionally, the one or more second cameras may include a camera having a first orientation, a camera having a second orientation, and a camera having a third orientation. In some instances, the first camera is located between the one or more motion sensors and the one or more second cameras.