Vehicle Data Reproducing Apparatus Adaptive Distance Marking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users of data reproducing apparatuses struggle to intuitively determine whether the inter-vehicle distance was appropriate during image-capturing time periods, as existing systems rely on scale marks that do not account for changing vehicle speeds, making it difficult to assess safety based on still images.
Innovation Solution
The data reproducing apparatus calculates and superimposes marks on moving image data indicating the stoppable distance and inter-vehicle distance, allowing users to visually assess if the inter-vehicle distance was appropriate by displaying these distances on the image, with marks changing color based on their comparison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scale marks showing fixed distance intervals (10m, 20m) are superimposed on the image, then users can see a reference for distance, but users cannot intuitively understand whether the inter-vehicle distance has been appropriate because the required stoppable distance changes with vehicle speed
Solution Approach 1:
The patent applies dynamics by making the scale marks adaptive to vehicle speed. Instead of fixed distance intervals, the scale marks dynamically adjust their spacing based on the vehicle's speed during image capture. The controller calculates the stoppable distance corresponding to the vehicle speed and uses this to determine the spacing of scale marks, allowing the reference scale to change with operating conditions. This resolves the contradiction by making the measurement reference (scale marks) dynamic rather than static, enabling intuitive assessment of whether inter-vehicle distance was appropriate for the specific speed condition.
Solution Approach 2:
The patent changes the parameter of scale mark spacing based on vehicle speed. The controller obtains vehicle speed information and calculates the stoppable distance, then adjusts the interval between scale marks accordingly. When speed increases, the stoppable distance increases, and the scale marks are spaced further apart; when speed decreases, the scale marks are spaced closer together. This parameter change allows the scale marks to accurately reflect the dynamic relationship between speed and stopping distance, enabling users to intuitively assess inter-vehicle distance appropriateness.
2Ease of operation
If multiple marks showing stoppable distance and inter-vehicle distance are superimposed on the object image, then users can intuitively understand inter-vehicle distance appropriateness, but the device complexity increases
Solution Approach 1:
The controller is designed to perform multiple functions: obtaining vehicle speed information, calculating stoppable distance based on speed, deriving inter-vehicle distance from image data, and superimposing multiple marks (scale marks and distance marks) on the image. By making the controller multi-functional, the patent avoids adding separate dedicated devices for each function, thus managing complexity while achieving the goal of intuitive inter-vehicle distance assessment.
Solution Approach 2:
The patent uses an image processor as an intermediary component that receives the captured image and the calculated distance information, then generates the composite image with superimposed marks. This intermediary approach separates the complex processing tasks from the core imaging function, making the system more manageable while still achieving the desired outcome of displaying multiple distance-related marks on the image.
Data Source
AI summary
A data reproducing apparatus that reproduces moving image data that is captured while a vehicle is traveling includes a controller configured to: derive a stoppable distance that the vehicle requires to come to a stop based on a speed of the vehicle obtained while the vehicle was traveling during an image-capturing time period in which the moving image data was captured; derive an inter-vehicle distance between the vehicle and a preceding vehicle located ahead of the vehicle during the image-capturing time period in which the moving image data was captured; and superimpose, on an object image generated from the moving image data, a first mark which shows a position corresponding to the stoppable distance and a second mark which shows a position corresponding to the inter-vehicle distance.