Camera Image Display System Kernel Booting
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Solution Overview
Problem
The existing audio video navigation (AVN) systems in vehicles face issues such as a black screen during camera image conversion, image quality differences between graphical IC and CPU, and increased costs due to separate components for processing camera images before system booting is complete.
Innovation Solution
A camera image display system where the camera only graphical driver is booted at the kernel stage of the central processing unit, allowing for immediate processing and display of camera images, with seamless handover to the graphical user interface once the GUI is booted, eliminating the need for separate components and preventing image conversion issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If separate devices (camera only graphical IC, memory, image switch) are used to process camera images before system booting is completed, then camera images can be displayed within a short period of time during booting, but the cost increases due to additional components
Solution Approach 1:
The patent extracts the camera image processing function from the main CPU and implements it as a separate camera-only graphical driver that operates independently during booting. This allows the CPU to focus on system initialization while the camera driver handles image processing, eliminating the need for additional hardware components like separate graphical ICs and image switches.
Solution Approach 2:
The graphical driver is segmented into two parts: a camera-only graphical driver that runs during booting and a full graphical driver that runs after system initialization. This segmentation allows the system to use minimal resources during booting while providing full functionality afterward, reducing the need for additional hardware components.
2Device complexity
If image switching is performed from camera only graphical IC to central processing unit graphical driver after booting, then the system can use integrated processing, but a black screen occurs during conversion causing safety issues
Solution Approach 1:
The camera-only graphical driver is activated in advance during system booting to prepare camera image processing before the full graphical driver is ready. This preliminary action ensures that camera images are already being processed and displayed when the system transitions to the full graphical driver, preventing any black screen interruption.
Solution Approach 2:
The patent maintains continuous camera image processing by having the camera-only graphical driver hand off seamlessly to the full graphical driver. The camera image processing action continues uninterrupted during the transition, ensuring continuous display and preventing black screens that would compromise safety.
3Loss of time
If camera images are processed by camera only graphical IC before booting completion and then converted to internal images, then images can be displayed during booting, but image quality deteriorates due to conversion differences
Solution Approach 1:
The camera-only graphical driver creates a simplified copy of the full graphical driver's functionality, implementing only the essential camera image processing capabilities needed during booting. This copying approach maintains image quality by using the same processing architecture as the full driver, avoiding quality deterioration from format conversion between different graphical processors.
Data Source
AI summary
A camera image display system of audio video navigation (AVN) includes a central processing unit (CPU) configured to control an AVN system. A camera only graphical driver is configured at a kernel stage for an initial booting of the CPU to process a camera image. A display is configured to display the camera image output from the CPU. When the central processing unit is booted, the camera only graphical driver is simultaneously booted with a kernel.