【Overview】
 We developed a multi-access control system for in-vehicle infotainment (IVI) platforms, enabling multiple applications—such as navigation and safety assistance systems (e.g., EVS and surround view)—to concurrently access a single camera resource. The system prevents failures caused by conflicts between competing resource requests from different client applications, ensuring stable and reliable camera operation across diverse use cases.

【Key Features of the Multi-Access Control System】

• Frame Distribution Control

  Distributes frame data according to application-specific resource requests

  Centrally manages priorities and data rates for each client application

• Buffer Management

  Retains frame buffers until processing by all client applications is completed

  Prevents data corruption and contention caused by premature buffer release

• Fault-Tolerant Design

  Monitors application freezes and unresponsive states

  Automatically isolates faulty applications while maintaining continuous frame delivery to other active clients

• Scheduling and QoS Control

  Optimizes resolution, frame rate (FPS), and latency based on application purpose (e.g., display, recording, recognition)

  Ensures appropriate quality of service for each use case sharing the camera resource