Vehicle Image Memory Sequencing to Prevent Outdated Display Frames
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Solution Overview
Problem
In image display systems for vehicles, older images can be mistakenly displayed as latest images due to faults in the camera, leading to false updating and undetectable errors in the image processing unit, causing user misrecognition of the vehicle's surroundings.
Innovation Solution
The image display system includes a memory unit with multiple memory regions and updating units that perform specific updating processes, using a specific image to detect and prevent the display of outdated images by outputting a signal when an updating failure occurs, ensuring only correct images are displayed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a memory unit temporarily stores images in a conventional image processing system, then image data can be buffered and processed, but older images may be mistakenly displayed as latest images due to camera faults, causing false updating and undetectable errors
Solution Approach 1:
The memory unit is divided into multiple memory regions (first memory region, second memory region, third memory region) that are sequentially updated. This segmentation allows the system to track which region contains the latest image data, preventing false updating by ensuring only the most recent region's data is displayed.
Solution Approach 2:
The system performs preliminary actions by sequentially writing image data to different memory regions in advance before reading. The updating unit writes to the first region, then second, then third region in sequence, and the reading unit reads from the corresponding region. This preliminary sequential updating ensures that when data is read, it is guaranteed to be the latest available image data.
2Reliability
If the image processing unit uses a simple memory structure, then device complexity is reduced, but the system cannot detect false updating or display outdated images when camera faults occur
Solution Approach 1:
The system implements feedback by having the reading unit read image data from the memory region that corresponds to the latest update sequence, and by structuring the updating unit to sequentially progress through memory regions. This feedback mechanism ensures that the display always receives data from the most recently updated region, allowing detection and prevention of false updating.
Solution Approach 2:
The updating unit performs preliminary sequential updating of multiple memory regions before the reading unit accesses the data. By pre-establishing the update sequence and ensuring the third region contains the latest data, the system proactively prevents outdated image display without requiring complex real-time detection mechanisms.
3Reliability
If multiple memory regions are used with sequential updating, then outdated image display is prevented, but the device complexity and updating process become more complex
Solution Approach 1:
The memory unit is segmented into distinct regions (first, second, third memory regions) with clear boundaries and update sequences. Each region serves a specific purpose in the sequential update process, making the management of multiple regions systematic and manageable rather than chaotic.
Solution Approach 2:
The updating unit performs periodic sequential updates cycling through the memory regions in a fixed pattern (first → second → third region). This periodic action creates a predictable, rhythmic update process that simplifies management compared to arbitrary or simultaneous updates, as the system follows a consistent cycle that is easy to track and implement.
Data Source
AI summary
The image processing apparatus is provided with an image acquiring unit, an image processing unit, and an image outputting unit. The image processing unit includes a memory unit. The memory unit includes: a plurality of memory regions; a first updating unit configured to sequentially perform a first updating process that updates memory contents of the memory regions using the memory image; a second updating unit configured to sequentially perform a second updating process that updates memory contents of the memory regions using a specific image; and a reading unit configured to sequentially perform a reading process that reads an image stored in the memory regions.