Image Sensor Frame Rate Control for Storage and Power Optimization
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Solution Overview
Problem
Portable electronic devices face limitations in high-speed photography and slow-motion video capture due to limited storage capacity and power consumption, restricting their use in capturing events in real-time.
Innovation Solution
An electronic device equipped with an image sensor and processors that detect variations in external objects, allowing for continuous high-speed photography and generation of slow-motion videos by adjusting frame rates and storing selected image frames, enabling efficient use of memory and power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed photography is implemented using portable electronic devices with sufficient memory capacity, then continuous high-speed photography and slow-motion video capture become possible, but storage capacity requirements increase significantly
Solution Approach 1:
The system performs preliminary detection of object variations at a first frame rate before initiating high-speed photography. This preliminary action identifies when motion occurs, allowing the device to activate high-frame-rate capture only when needed, rather than continuously storing all frames at maximum rate.
Solution Approach 2:
The frame rate is dynamically adjusted based on detected object variations. The system operates at a lower first frame rate during static conditions and switches to a higher second frame rate when motion is detected, optimizing the balance between capture quality and storage requirements.
2Speed
If continuous high-speed photography is performed to capture motion events, then photography speed increases, but power consumption increases significantly
Solution Approach 1:
The system uses periodic detection of object variations at a lower frame rate to monitor for motion events. High-speed photography is activated only during periods when motion is detected, rather than operating continuously at maximum speed, thereby reducing overall power consumption while maintaining capture capability.
Solution Approach 2:
The system performs preliminary monitoring at a lower power consumption level by detecting variations at a first frame rate. This allows the device to remain in a low-power state until motion is detected, at which point high-speed capture is activated temporarily.
3Reliability
If all image frames are stored in memory for video generation, then video quality is maintained, but memory capacity requirements increase
Solution Approach 1:
The system extracts only the necessary image frames for video generation by detecting variations in external objects. Instead of storing all frames, it selectively identifies and stores frames where motion occurs, reducing memory requirements while maintaining video quality for capturing the event.
Solution Approach 2:
The system performs partial action by storing only a portion of the captured frames - specifically those where object variations are detected - rather than storing all frames. This selective approach provides sufficient information for video generation without the excessive storage demand of capturing every frame.
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 continuous high-speed photography and generation of slow-motion videos on portable devices, overcoming storage and power limitations by optimizing frame rate adjustments and selective image frame storage.
Implementation Method 1
a photodiode for converting the collected light into an electrical signal
Data Source
AI summary
According to an embodiment of the present disclosure, an electronic device may comprise an image sensor and one or more processors configured to obtain a first plurality of image frames for an external object as per a first frame rate, detect a variation associated with the external object, when the variation meets a designated condition, obtain a second plurality of image frames for the external object as per the first frame rate or a second frame rate, generate a first portion of a video using at least some of the first plurality of image frames, generate a second portion of the video using at least some of the second plurality of image frames, and generate a third portion of the video using at least some of a third plurality of image frames for the external object obtained as per the first frame rate or a third frame rate.