In-Vehicle VM Output Blocking for Display and Speaker Anomalies
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Solution Overview
Problem
Conventional vehicular devices are unable to respond to anomalous outputs from in-vehicle speech-related output devices, such as loudspeakers, in addition to display-related devices.
Innovation Solution
A vehicular device with an operating system, a monitor, and a blocker that detects anomalies in the system or communication between the system and output devices, blocking communication to prevent anomalous information transmission, and includes a virtual environment for monitoring and blocking, with optional substituter components to generate substitutive information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shielding content is superimposed upon anomalous content on the display, then the anomalous content is hidden, but the device cannot respond to anomalous outputs from speech-related output devices such as loudspeakers
Solution Approach 1:
The monitoring system is designed to monitor multiple types of output devices including both display devices and speech-related output devices such as loudspeakers. The blocker component is configured to block communication between the operating system and any output device when an anomaly is detected, making the anomaly response mechanism universally applicable across different output device types rather than being limited to display devices only.
2Reliability
If the monitor continuously monitors the operating system and communication, then anomaly detection capability is improved, but system complexity increases
Solution Approach 1:
A virtual environment is introduced as an intermediary layer between the operating system and the physical output devices. The monitor component operates within this virtual environment to monitor the operating system and communication processes, while the blocker also operates in the virtual environment to block communication when anomalies are detected. This intermediary virtual environment simplifies the monitoring architecture by providing a controlled sandbox for anomaly detection and response operations.
Data Source
AI summary
A vehicular device includes: a virtual machine (VM) that transmits information to a display; a hypervisor on which the VM runs; a monitor that monitors at least one of: presence or absence of an anomaly in the VM; or presence or absence of an anomaly in communication between the VM and the display; and a blocker that blocks the communication between the VM and the display when the monitor detects the anomaly in the VM or the anomaly in the communication between the VM and the display.