Rear Camera Replay Framing for Accurate Digital Mirror Review
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Solution Overview
Problem
The issue with existing drive recorders is that the angle of view in the displayed rear view video image differs from the actual view checked by the driver, making it difficult to accurately assess events like accidents due to differences in display size and range.
Innovation Solution
A record and replay control device that identifies a first range for display on a first unit and a larger second range on a second unit, with information indicating the first range displayed on the second unit to align with the driver's view, using image capturing, recording, and display control units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a wide angle camera is used to capture a wide range of images for the drive recorder, then the coverage area is improved, but the display size of objects in the digital inner mirror becomes too small for appropriate checking
Solution Approach 1:
The patent divides the video image into multiple display ranges: a first display range for the digital inner mirror showing a narrow range with larger object sizes for driver monitoring, and a second display range for replay showing a wide range with smaller object sizes for comprehensive coverage. This segmentation allows each display context to optimize for its specific purpose.
Solution Approach 2:
The patent applies different display qualities to different portions of the video image. The first display range (narrow range) is optimized for driver monitoring with larger object sizes, while the second display range (wide range) is optimized for comprehensive coverage with smaller object sizes. Each region has tailored display characteristics suited to its function.
2Measurement precision
If the video image is displayed in a narrow range for the digital inner mirror, then the display size of objects is improved for driver checking, but the coverage area is reduced and cannot show the full range captured by the camera
Solution Approach 1:
The patent segments the video image display into two distinct ranges: a first narrow display range for the digital inner mirror that provides large object sizes for driver monitoring, and a second wide display range for replay that provides comprehensive coverage. Both ranges are simultaneously available depending on the display context.
Solution Approach 2:
The patent adds a dimensional aspect by providing multiple display ranges within the same video image data. Instead of choosing between narrow or wide display, the system provides both perspectives - a narrow first display range and a wide second display range - allowing users to access different spatial perspectives of the same captured scene.
3Measurement precision
If the replay is displayed in the same narrow range as the digital inner mirror, then the display size is improved, but the information completeness is reduced and cannot show the full captured scene for accurate accident explanation
Solution Approach 1:
The patent segments the replay display into two ranges: when displayed on the first display unit, it shows the narrow first display range matching the driver's view, and when displayed on the second display unit, it shows the wide second display range providing complete scene information. This segmentation preserves both viewing experiences in the replay function.
Solution Approach 2:
The patent creates a copy of the video image data for replay purposes, separate from the live digital inner mirror display. This copied data allows the replay to independently choose between narrow and wide display ranges, preserving the original driver's view experience while also providing comprehensive scene information when needed.
4Adaptability or versatility
If different display units show different ranges (first unit shows narrow range, second unit shows wide range), then the adaptability to different display contexts is improved, but the device complexity increases
Solution Approach 1:
The patent makes the video image data universal by encoding both the first display range (narrow) and second display range (wide) information within the same data structure. This allows the same recorded data to be adaptively displayed in different ranges depending on which display unit is used, without requiring separate processing systems for each display context.
Data Source
AI summary
A record and replay control device includes an image capturing control unit that acquires a video image that has been captured by a rear camera, a range identification unit that identifies a first range that is to be displayed on a first display unit and that is used by a driver of the vehicle to check the rear of the vehicle with respect to the video image acquired by the image capturing control unit, a recording control unit that records the video image acquired by the image capturing control unit in a recording unit, a replay control unit that replays the video image recorded by the recording control unit, and a display control unit that displays, when the video image replayed by the replay control unit is displayed on the first display unit or a second display unit that is different from the first display unit in a second range that is larger than the first range, information that indicates the first range on the video image that is displayed in the second range.