Vehicle Display Signal Processing with VM Workload Balancing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing signal processing devices in vehicles face temporary suspension due to processor overload, which can impact vehicle driving when displaying critical information.
Innovation Solution
A signal processing device with a processor and graphic processor that executes server and guest virtual machines on a hypervisor, utilizing a workload balance server to manage resource allocation, display control, and application termination based on workload data to prevent suspension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single processor controls multiple displays in a vehicle, then device complexity is reduced, but the processor becomes overloaded causing system suspension
Solution Approach 1:
The patent divides the single processor into multiple virtual machines (server VM and guest VMs) that can independently execute tasks. Each VM acts as a separate processing unit, allowing parallel execution of display control tasks without overloading a single core processing thread, thus preventing system suspension while maintaining operational reliability.
Solution Approach 2:
The workload balance server acts as an intermediary between multiple guest virtual machines and the host processor. It receives workload data from guest VMs, monitors processor usage rates, and dynamically adjusts resource allocation or terminates applications to prevent processor overload, thereby ensuring system stability while managing multiple displays.
2Productivity
If multiple virtual machines are executed on a hypervisor to improve resource utilization, then productivity increases, but monitoring and managing workload becomes more complex
Solution Approach 1:
The workload balance server performs multiple functions: it monitors processor usage rates across all guest VMs, receives workload data from multiple sources, dynamically adjusts resource allocation, and terminates applications when necessary. This multi-functional approach simplifies the overall management architecture by consolidating control tasks into a single coordinated system rather than requiring separate management mechanisms for each VM.
3Productivity
If the processor usage rate is increased to maximize output, then productivity improves, but the system becomes unstable and may suspend operation
Solution Approach 1:
The workload balance server implements a feedback mechanism by continuously monitoring processor usage rates from guest virtual machines. When the usage rate exceeds a predetermined threshold, the server responds by dynamically adjusting resource allocation or terminating applications, thereby reducing the load and maintaining stable operation. This closed-loop control ensures the system operates within safe limits while maximizing productivity.
Solution Approach 2:
The system dynamically adjusts the number and resource allocation of virtual machines based on real-time processor usage rates. The workload balance server can activate or deactivate guest VMs, adjust their resource quotas, or terminate applications within them, allowing the system to adapt its processing capacity to current workload conditions and prevent overload-induced suspensions.
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 and a graphic processor configured to perform signal processing for a display mounted in a vehicle, wherein the processor is configured to execute a server virtual machine and a plurality of guest virtual machines on a hypervisor in the processor, and execute a workload balance server to control display off, operation mode change, or application forced termination based on workload data received from the plurality of guest virtual machines. Accordingly, the signal processing device can be utilized efficiently.