Wireless Car Digital AV System with Encrypted Multi-Stream Playback
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Solution Overview
Problem
Conventional automobile AV systems are limited by the inability to play multiple AV streams simultaneously, require extensive wiring, and restrict the portability of display devices due to cable connections.
Innovation Solution
A wireless car digital AV system using an AV Host with a wireless network interface to send encrypted digital AV files to multiple display devices, which can decrypt and decode these files independently, eliminating the need for cables and enabling different content on each device, and allowing for firmware updates and configuration changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable connection is used between main system and display panels, then signal transmission is stable, but wiring complexity increases and portability decreases
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless communication system. The main system transmits AV signals to display panels wirelessly using wireless communication modules, eliminating the need for physical cable connections while maintaining signal transmission functionality.
Solution Approach 2:
The patent introduces wireless communication modules as intermediaries between the main system and display panels. These modules enable signal transmission without direct cable connections, serving as a mediator that replaces the mechanical connection with an electromagnetic field-based communication channel.
2Device complexity
If main system plays only one AV stream, then system complexity is low, but adaptability decreases
Solution Approach 1:
The patent segments the AV signal processing functionality by distributing it across multiple independent display panels. Each panel has its own processing capabilities and can independently receive and play different AV streams from the main system, enabling multi-stream playback without significantly increasing central system complexity.
Solution Approach 2:
The main system is designed with universal output capabilities that can simultaneously transmit multiple different AV streams to multiple display panels. Each display panel can function as an independent playback device, allowing the system to adapt to various viewing scenarios and content types.
3Stability of the object's composition
If cable connection is used, then display panels are fixed, but portability decreases
Solution Approach 1:
The patent replaces the mechanical cable connection that fixed display panels in position with a wireless communication system. This allows display panels to be moved freely within the wireless communication range while maintaining connection stability through continuous wireless signal transmission.
Data Source
AI summary
The present invention relates to a wireless car digital AV system to be applied in a car, and the wireless car digital AV system comprises an AV Host and at least one or multiple display devices. The AV Host includes a storage device and a wireless network interface, and the storage has at least one digital AV file. The display device includes a wireless network interface and a display panel. The display device is connected to the AV Host by the wireless network interface, such that the display device can receive and play the digital AV file transmitted from the AV Host through the wireless network interface. Furthermore, the present invention also discloses a method for an automobile AV Host to wirelessly transmit a video file to a display device.