Vehicle Display Signal Processing via Shared Memory Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle display systems face complexity in signal processing when multiple displays are used, particularly in maintaining synchronized display of identical images and high-speed data communication, especially when different operating systems are involved.
Innovation Solution
A signal processing device with a processor executing multiple virtual machines on a hypervisor, utilizing a shared memory to transmit identical data to displays, enabling synchronized image display and high-speed data communication across displays operating on different systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple displays are used in a vehicle, then the display functionality and information presentation are improved, but the signal processing complexity increases
Solution Approach 1:
The system segments the display management into independent virtual machines, where each display is controlled by a dedicated virtual machine instance. This segmentation allows each display to be managed independently while maintaining centralized coordination through the hypervisor, thereby improving display functionality without proportionally increasing overall system complexity.
Solution Approach 2:
The patent implements a universal signal processing architecture where a single processor with multiple virtual machines can manage multiple displays with different functions and requirements. The shared memory mechanism provides a universal interface for data exchange between virtual machines, enabling one system to handle diverse display tasks including synchronized image display, independent display control, and various media presentations.
2Stability of the object's composition
If identical images are displayed on multiple displays, then the information consistency is improved, but the synchronization difficulty increases
Solution Approach 1:
The patent introduces shared memory as an intermediary mechanism between virtual machines to achieve synchronized image display. The shared memory serves as a common data repository that multiple virtual machines can access simultaneously, ensuring that identical images are displayed across multiple displays while maintaining synchronization through a unified data source.
Solution Approach 2:
The system uses data copying from a single source in shared memory to multiple virtual machine contexts. By maintaining one master copy of image data in shared memory and allowing virtual machines to access or copy from this single source, the system ensures information consistency across all displays without the complexity of managing multiple independent data streams.
3Adaptability or versatility
If different operating systems are used on virtual machines, then the system adaptability is improved, but the data communication speed decreases
Solution Approach 1:
The shared memory acts as an intermediary that enables high-speed data communication between virtual machines running different operating systems. By providing a common memory space that all virtual machines can access directly, the system eliminates the need for slow inter-OS communication protocols while maintaining compatibility with diverse operating systems through the hypervisor layer.
Data Source
AI summary
A signal processing device and a display apparatus for vehicles including the same are disclosed. The signal processing device includes a processor configured to process a signal for a display mounted in a vehicle, wherein the processor is configured to execute first to third virtual machines on a hypervisor in the processor, the second virtual machine is operated for a first display, the third virtual machine is operated for a second display, and the first virtual machine in the processor is configured to control a shared memory based on the hypervisor for transmission of identical data to the second virtual machine and the third virtual machine. Consequently, it is possible for a plurality of displays in the vehicle to display identical images in a synchronized state.