Vehicle Camera Control Switching for ISP-Less Image Processing
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Solution Overview
Problem
Existing vehicle camera systems without a built-in image signal processor (ISP) face challenges in operation mode management, leading to inoperability, image quality degradation, and increased power consumption, particularly when integrating with surround view monitor (SVM) and advanced driver assistance systems (ADAS-PRK).
Innovation Solution
A device and method that include a communication device and camera device without a built-in ISP, which transfers image processing responsibilities to first and second image controllers based on vehicle operation modes, ensuring seamless image processing and minimizing power consumption by initializing deserializers and serializers accordingly, and providing a fail-safe function during abnormal operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If image processing responsibilities are transferred to multiple image controllers based on vehicle operation modes, then adaptability and operational flexibility are improved, but device complexity increases due to coordination requirements between first and second image controllers
Solution Approach 1:
The system dynamically assigns control rights between the first image controller and second image controller based on vehicle operation modes. The camera device can be controlled by either the first image controller or second image controller depending on whether the vehicle is in travel mode or parking mode, creating a flexible and adaptive control structure that resolves the technical contradiction between adaptability and device complexity.
2Adaptability or versatility
If the camera device is controlled by multiple image controllers simultaneously, then functional versatility is improved, but power consumption increases due to simultaneous operation of multiple controllers
Solution Approach 1:
The system implements periodic switching of control rights between the first image controller and second image controller based on vehicle operation modes. During travel mode, the first image controller handles camera control, and during parking mode, the second image controller takes over. This periodic assignment ensures that only one controller is actively processing camera images at any given time, significantly reducing overall power consumption while maintaining full functional versatility across different operating conditions.
3Adaptability or versatility
If control rights for the camera device are shared between first and second image controllers, then system versatility is improved, but reliability decreases due to potential control conflicts and inoperability
Solution Approach 1:
The system incorporates a control right management mechanism that uses feedback from vehicle operation mode detection to determine which image controller should control the camera device. The first image controller or second image controller is selected based on real-time feedback about whether the vehicle is in travel mode or parking mode. This feedback-based control right assignment prevents control conflicts and ensures operational stability while maintaining the versatility of having multiple capable controllers in the system.
Data Source
AI summary
A device and a method are provided for controlling an image of a vehicle for an image of a vehicle camera that does not have a built-in image signal processor (ISP). A communication device receives information on an operation mode of the vehicle from a vehicle system and a camera device that does not have a built-in ISP obtains an image of a surrounding region of the vehicle, and transmits the image of the surrounding region to a first image controller. The first image controller having a first ISP for performing image processing shares the image of the surrounding region with a second image controller having a second ISP for performing image processing. The first image controller and the second image controller alternatively have a control right for the camera device depending on the operation mode of the vehicle.