Vehicle Display Virtualization for Low-Latency Multi-Screen Sync
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Solution Overview
Problem
The increase in the number of displays in vehicle display apparatuses leads to complex signal processing, resulting in significant delays in image processing and display, especially when different operating systems and resolutions are involved.
Innovation Solution
A signal processing device utilizing a processor that executes a server virtual machine and multiple guest virtual machines on a hypervisor, where encoded video data is stored in a shared memory, allowing guest virtual machines to decode and display images on respective displays with synchronized timing and resolution adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate signal processing devices are used for each display, then each display can be independently controlled, but the amount of image processing increases and delay significantly increases
Solution Approach 1:
The patent merges multiple separate signal processing devices into a single integrated signal processing device that serves multiple displays. The processor executes virtual machines that can process images for multiple displays simultaneously, reducing the total amount of image processing operations and eliminating the delays associated with sequential processing in separate devices.
Solution Approach 2:
The patent segments the signal processing function into virtual machines that can be independently executed on the processor. Each virtual machine can be assigned to specific displays or image processing tasks, allowing independent control of each display while sharing the same hardware resource, thus reducing overall processing delay.
2Quantity of substance
If the number of displays is increased, then more information can be displayed, but signal processing becomes complicated
Solution Approach 1:
The patent implements a universal signal processing device that can handle multiple displays through virtual machines. The same processor and virtual machine framework can serve different displays with different resolutions and requirements, eliminating the need for separate dedicated processing devices for each display and reducing overall system complexity.
3Adaptability or versatility
If images are processed and displayed across multiple displays with different resolutions, then more comprehensive information can be shown, but processing delay increases
Solution Approach 1:
The patent applies local quality by allowing each virtual machine to process images according to the specific resolution and requirements of its assigned display. The signal processing device can simultaneously process images at different resolutions for different displays without affecting the others, reducing overall processing delay while maintaining adaptability to various display specifications.
Data Source
AI summary
A signal processing device and a display apparatus including the same are disclosed. The signal processing device includes a processor to perform signal processing, wherein the processor is configured to execute a server virtual machine and a plurality of guest virtual machines on a hypervisor, first and second guest virtual machine operate for first and second display, respectively, the server virtual machine is configured to encode and store processed video data in a shared memory, the first guest virtual machine is configured to receive and decode the encoded video data and store decoded video data in the shared memory, and the second guest virtual machine is configured to receive the decoded video data and display at least a portion of the decoded video data on the second display. Accordingly, it is possible to reduce a delay in displaying images between a plurality of displays.