Vehicle Head Unit Touch Signal Accelerator for Latency Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Latency issues within the vehicle head unit increase when providing connectivity services, leading to decreased responsiveness of applications and a poor user experience due to signal processing through the operating system, framework, and applied applications.
Innovation Solution
A vehicle head unit with a device driver and a touch event software accelerator that directly transmits touch signals to a user terminal, determining whether the signal corresponds to a touch event for controlling an applied application based on coordinate information and application state, thereby bypassing unnecessary signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If touch signals are processed through the operating system and framework, then the system maintains stability and proper application control, but latency increases and responsiveness deteriorates
Solution Approach 1:
The patent segments the touch signal processing path into two channels: a fast path for connectivity application touch events that bypasses the OS and framework, and a normal path for other applications that goes through the standard processing chain. This segmentation allows critical connectivity signals to be processed with minimal latency while maintaining system stability through the framework for non-critical applications.
Solution Approach 2:
The patent introduces a touch event software accelerator as an intermediary component that sits between the device driver and the application layer. This accelerator intercepts touch signals, determines whether they correspond to connectivity applications, and routes them appropriately - either directly to the connectivity application or through the normal OS processing path, thus mediating between speed and stability requirements.
2Ease of operation
If touch signals are transmitted through the operating system and framework, then application control is maintained, but user experience deteriorates due to decreased responsiveness
Solution Approach 1:
The system performs preliminary action by pre-establishing the fast processing path for connectivity applications and pre-configuring the touch event software accelerator to recognize connectivity application identifiers. This preliminary setup enables immediate high-speed processing of connectivity touch events without requiring signals to traverse the full OS and framework processing chain, thus improving responsiveness while maintaining control.
3Adaptability or versatility
If the system processes all touch signals through the complete software stack, then comprehensive application control is achieved, but latency within the vehicle head unit increases
Solution Approach 1:
The patent implements dynamic touch signal routing where the processing path is not fixed but adapts based on the target application. The touch event software accelerator dynamically determines whether to route a touch signal through the fast direct path or the normal OS/framework path based on real-time identification of the target application type. This dynamic approach allows the system to minimize latency for connectivity applications while maintaining comprehensive control for other applications.
Data Source
AI summary
A vehicle head unit to execute an applied application relating to a connectivity service includes: a device driver configured to provide a touch signal including coordinate information of a position touched by a user on a display of the vehicle head unit; and a touch event software accelerator configured to determine whether the touch signal is a signal for controlling the applied application based on the coordinate information and configured to transmit the touch signal to a user terminal according to the determination.