Motion Detection Circuit Reduces Parking Mode Power Consumption
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Solution Overview
Problem
Existing driving recorders in parking mode experience high power consumption due to continuous video capturing, which can lead to failure in meeting image capturing requirements over extended periods.
Innovation Solution
An image processing device equipped with a motion detection mechanism that generates image data in different periods, storing data in a longer first period before motion is detected and a shorter second period after motion is detected, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous video capturing is used in parking mode, then image capturing requirements are met, but power consumption is high
Solution Approach 1:
The patent implements periodic motion detection at intervals (e.g., every N frames) rather than continuous processing. The motion detection circuit periodically checks for motion events in captured video data, allowing the system to maintain image capturing requirements while reducing power consumption by activating intensive processing only when motion is detected or at scheduled intervals during parking mode
Solution Approach 2:
The patent extracts and processes only the motion detection portion of video data rather than analyzing all video content continuously. By using a dedicated motion detection circuit that checks for motion events separately from full video processing, the system meets image capturing requirements while consuming significantly less power during parking mode operation
2Reliability
If motion detection is performed continuously, then motion events are detected promptly, but power consumption increases
Solution Approach 1:
The motion detection circuit operates periodically by checking motion events at defined intervals (e.g., every N video frames) rather than continuously analyzing every frame. This periodic operation maintains adequate motion detection accuracy for parking mode while significantly reducing power consumption compared to continuous motion analysis
Data Source
AI summary
An image processing device includes a memory, an image generator and a motion detection circuit. The image generator generates first data based on input image data and stores the first data to the memory. The motion detection circuit detects whether there is a presence of a motion detection event in the input image data. Before the motion detection circuit detects the presence of the motion detection event, the image generator stores the first data in a first period, and after the motion detection circuit detects the presence of the motion detection event, the image generator stores the first data in a second period, wherein the first period is longer than the second period