Multicast Content Distribution for Wireless Display Latency

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Solution Overview

Problem

Current wireless network display solutions face challenges in efficiently displaying multiple content items on multiple devices using a single computing device, resulting in high display latency and limited bandwidth due to competing video streams and queuing delays.

Innovation Solution

Implementing a multicast transmission method that allows a single user device to identify and transmit multiple content items to separate receiving devices, each processing and displaying its designated data portion, thereby reducing latency and bandwidth competition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple video streams are transmitted using separate laptop/monitor pairs with independent Wi-Fi display sessions, then each content item can be displayed on its designated monitor, but display latency increases and network bandwidth is limited due to competing streams

Engineering Contradiction:

Improvecontent display accuracyVSAvoiddisplay latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the video stream into multiple independent packets, each containing a portion of the content data. These segmented packets are transmitted separately through the network and reassembled at the receiving display device, enabling parallel transmission of multiple content items without mutual interference

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent merges multiple content item transmissions into a unified multicast data stream from a single source device. By combining the transmission function into one source, multiple displays receive content simultaneously through a shared network channel, eliminating the need for separate laptop/monitor pairs while maintaining display reliability

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If multiple video streams compete for network bandwidth, then content can be transmitted to multiple displays, but queuing delays increase resulting in high display latency

Engineering Contradiction:

Improvemulti-content transmission capabilityVSAvoidqueuing delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent implements periodic transmission of content packets in a structured sequence, where data portions are divided into regular intervals and transmitted systematically. This periodic action pattern prevents random access conflicts and reduces queuing delays by establishing predictable transmission timing

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent introduces an intermediary data structure (multicast data unit with portion identifiers) that mediates between the source device and multiple receiving displays. This intermediary organizes the data flow, allowing packets to be routed efficiently to appropriate displays without direct competition for network resources

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If separate laptop/monitor pairs are used for each content item, then display reliability is maintained, but device complexity and resource requirements increase

Engineering Contradiction:

Improvedisplay session stabilityVSAvoidsystem configuration complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent enables a single source device to perform multiple display functions simultaneously, acting as a universal content source for multiple displays. The source device maintains one Wi-Fi display session while serving multiple receiving devices, eliminating the need for separate laptop/monitor pairs and reducing overall system complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent creates data copies of content portions for distribution to multiple displays through the multicast mechanism. Instead of requiring multiple source devices, the system makes copies of the segmented content data and distributes them through the network to appropriate receiving displays, maintaining reliability through redundant data paths

Inventive Principle:

Principle #26Copying

Data Source

PatentUS10149119B2Providing multiple content items for display on multiple devices

Publication Date: 2018.12.04 INTEL CORP

AI summary

Embodiments of methods, systems, and storage medium associated with providing, with a user device, multiple content items for display by multiple receiving devices via multicast transmissions are disclosed herein. In one instance, the method may include forming a multicast data unit with multiple portions of data. Each portion of data may correspond to one of multiple content items to be transmitted to multiple receiving devices by the computing device and each content item is to be displayed by one of the multiple receiving devices. The method may further include transmitting the formed multicast data unit to the multiple receiving devices; and initiating, at each receiving device of the multiple receiving devices, a retrieval from the multicast data unit a portion of data that corresponds to a content item to be displayed by the receiving device, and to display the content item. Other embodiments may be described and/or claimed.