Vehicle Content Streaming With Delay-Based Headset Synchronization

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Solution Overview

Problem

Conventional vehicle systems for outputting content to multiple passengers incur high costs and complex system structures due to the need for multiple wireless communication chips, leading to synchronization issues among output devices with varying delay characteristics.

Innovation Solution

A vehicle system that collects delay characteristic information of multiple output devices, selects a service group based on specific delay characteristics, and transmits content in a streaming manner to ensure synchronized playback across multiple devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple wireless communication chips are installed to support content output to multiple passengers, then content delivery capability to multiple passengers is improved, but system complexity and cost increase

Engineering Contradiction:

Improvecontent delivery capabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A single wireless communication chip is configured to perform multiple functions: it sequentially communicates with different output devices (headsets) and manages content delivery to multiple passengers over time. The chip acts as a universal communication interface that serves all passengers through time-division multiplexing rather than requiring dedicated chips for each passenger.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Multiple communication functions that would traditionally require separate chips are merged into a single wireless communication chip. The chip handles content output to multiple headsets sequentially, combining the roles of multiple dedicated communication modules into one integrated component, thereby reducing system complexity and cost.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If multiple wireless communication chips are installed to support content output to multiple passengers, then content delivery capability to multiple passengers is improved, but cost increases

Engineering Contradiction:

Improvecontent delivery capabilityVSAvoidcost

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Instead of duplicating expensive wireless communication chips for each passenger, the system uses one chip that replicates communication functions sequentially for each passenger. The chip copies its communication protocol and content delivery capability to serve multiple headsets in sequence, avoiding the need to purchase multiple physical chip instances.

Inventive Principle:

Principle #26Copying

3Adaptability or versatility

If content is transmitted to multiple output devices with varying delay characteristics, then multi-passenger content delivery is improved, but synchronization accuracy deteriorates

Engineering Contradiction:

Improvemulti-passenger content deliveryVSAvoidsynchronization accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

Before transmitting content to multiple output devices, the system performs a scan operation to collect delay characteristic information from each device. Based on this advance information, the processor pre-determines which devices form a service group and calculates the appropriate delay adjustment values. This preliminary characterization of device delays enables synchronized content delivery by compensating for inherent device variations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system adjusts the delay parameter of content transmission to each output device based on its measured delay characteristics. By changing the transmission timing parameter dynamically for each device, the system compensates for variations in device processing delays, ensuring that all devices in the service group reproduce content simultaneously despite having different inherent delay characteristics.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12483748B2Method for multi-use of content, system and vehicle supporting the same

Publication Date: 2025.11.25 HYUNDAI MOTOR CO LTD

AI summary

A vehicle for supporting multi-use of content of a vehicle includes a memory to store the content, and a processor operatively connected to the memory. The processor collects multiple pieces of delay characteristic information of a plurality of output devices by performing a scan operation, if a request is made to reproduce the content stored in the memory, select, as a service group, a predetermined percentage of output devices, which satisfy a specific delay characteristic value, among the plurality of output devices, and transmit the content to the service group, a method for multi-use of the content of the vehicle, and a computing system using the same.