Vehicle Multimedia Demultiplexing Menu Data During Travel
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Solution Overview
Problem
Current multimedia reproduction systems in vehicles suppress both video data and user interfaces when driving, limiting the operator's ability to control audio components and navigate music tracks, despite legal permissions to operate audio systems during travel.
Innovation Solution
An apparatus and method that demultiplex audio-video data streams from multimedia storage media, allowing separate processing of audio, video, and menu data streams, where only video data is faded out during driving, enabling menu data and audio control while driving, and restoring video output when the vehicle is stationary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both video data and user interface are suppressed during driving to comply with safety regulations, then safety compliance is improved, but operator control capability deteriorates
Solution Approach 1:
The patent segments the video data stream into two distinct components: menu data (user interface) and actual video content. By separating these functions, the system can selectively display menu data while suppressing video content during driving, thus maintaining operator control capability without compromising safety compliance.
Solution Approach 2:
The patent applies different quality treatments to different parts of the video data stream. Menu data is preserved and displayed with full quality during driving, while video picture data is completely suppressed. This local differentiation allows the system to maintain usability for audio control while ensuring safety by preventing distracting visual content.
2Reliability
If user interface is suppressed during driving to prevent distraction, then safety is improved, but convenience of use deteriorates
Solution Approach 1:
The system segments the graphical output into menu data and video picture data, allowing selective processing. Menu data continues to be displayed during driving operations, providing necessary control interfaces for track selection, volume adjustment, and other audio-related functions, thereby maintaining convenience of use while ensuring safety.
3Reliability
If all video data is suppressed during driving, then safety compliance is improved, but functionality of multimedia player deteriorates
Solution Approach 1:
The patent implements segmentation of video data into navigational menu data and entertainment video content. This allows the multimedia player to maintain full functionality for audio playback and navigation during driving, while complying with safety regulations by suppressing only the video picture content that could cause distraction.
Solution Approach 2:
The system achieves multi-functionality by enabling the display unit to serve dual purposes: displaying menu data for operational control during driving, and displaying video content during non-driving conditions. This universal approach maintains versatility across different operating states without compromising safety.
Data Source
AI summary
A process and device are disclosed for playing back multimedia data in a motor vehicle. A digital multiplexed audio-video data stream from a multimedia data carrier, in particular a DVD, is read and separated into an audio data stream, a video data stream and a menu data stream. The audio data stream is converted into an audio signal which can be acoustically output and is output by an acoustic output unit. The video data stream and the menu data stream are combined into a digital graphic data stream which is blanked out when the motor vehicle is in movement. The graphic data stream is converted into a graphic signal which can be graphically output and is output by a graphic output unit. This ensures that the menu data are displayed even when the vehicle is in movement, so that the multimedia data carrier remains constantly useable.