Video Signal Source Identification in Multi-User Wireless Presentation

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Solution Overview

Problem

In multi-user wireless presentation systems, when multiple presenters transmit video data simultaneously, the display device shows split-screen images, making it difficult for conference participants to identify which presenter's device is providing the video signal source for a particular frame.

Innovation Solution

The method involves assigning identification codes to transmitter devices, combining video data with corresponding identification images, and outputting this combined data to a display device, allowing participants to easily identify the source of each video frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple transmitter devices transmit video data simultaneously to enable multi-user wireless presentation, then the system supports concurrent presentations, but the display device shows split-screen images making it difficult to identify which presenter's device is providing the video signal source

Engineering Contradiction:

Improvemulti-user wireless presentation capabilityVSAvoidvideo signal source identification

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The display screen is segmented into multiple regions, with each region corresponding to a specific transmitter device. Identification information (such as device icons, names, or colors) is assigned to each region to indicate which transmitter device's video signal is being displayed. This segmentation allows participants to easily identify the video signal source for each presenter without confusion.

Inventive Principle:

Principle #1Segmentation

2Reliability

If a wired video signal line is used to connect the information processing device and the display device, then stable video transmission is achieved, but the presenter has to physically reconnect the video signal line when switching between different information processing devices, interrupting the conference

Engineering Contradiction:

Improvevideo transmission stabilityVSAvoiddevice switching convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical connection system (physical video signal cables) with a wireless transmission system. Multiple transmitter devices can wirelessly transmit video signals to the display device simultaneously, eliminating the need for physical reconnection when switching between devices. This maintains reliable video transmission while greatly improving ease of operation and allowing seamless device switching during conferences.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12302032B2Method for identifying video signal source

Publication Date: 2025.05.13 BENQ CORP

AI summary

A method for identifying video signal source is provided. The method includes the following steps. A first identification code is assigned to a first transmitter device by a receiver control unit of a receiver device. A first video data is transmitted by the first transmitter device. The first video data and a first identification image corresponding to the first identification code are combined as a first combined video data by the receiver control unit. The first combined video data is outputted to a display device by the receiver control unit.