Presentation Synchronization via Signal Protocol
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Solution Overview
Problem
It is challenging for audiences using portable computers or tablets to synchronize with a presenter's screen during a presentation, making it difficult for them to follow instructions and for the presenter to ensure all viewers see the same frames, which limits the effectiveness of the presentation.
Innovation Solution
A remote control system that synchronizes frames across multiple digital processing devices via a network, using a first device with a USB port, server driver, and network transmitting unit, and a second device with a network receiving unit and remote driver, with an input device generating USB signals for presentation control instructions, and a signal processing protocol for standardizing signal packing and unpacking processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audiences use portable computers or tablets to view presentations independently, then accessibility and flexibility are improved, but synchronization with the presenter's screen deteriorates
Solution Approach 1:
The system establishes a feedback mechanism where the presenter's computer captures control signals (mouse movements, keyboard inputs, slide changes) and transmits them to audience devices. The audience devices receive and execute these signals to replicate the presenter's screen actions, creating a closed-loop synchronization system that maintains reliability while preserving accessibility
Solution Approach 2:
The invention introduces a communication network as an intermediary between the presenter's computer and audience devices. This mediator transmits control signals and presentation data, enabling synchronization across multiple independent devices without requiring direct physical connection or centralized control hardware
2Measurement precision
If the speaker manually controls presentation frames on each audience device, then synchronization precision is improved, but operation complexity and time consumption deteriorate
Solution Approach 1:
The system enables self-service synchronization where the presenter's computer automatically generates and transmits control signals to audience devices. The audience devices autonomously receive and execute these signals without requiring manual intervention from the speaker, achieving high synchronization precision while maintaining ease of operation
Solution Approach 2:
The invention implements a copying mechanism where control signals and presentation states from the presenter's computer are replicated and transmitted to audience devices. This allows precise synchronization through automatic duplication of the presenter's actions across multiple devices, eliminating manual control requirements
3Reliability
If a network transmission system is implemented to synchronize presentation frames, then synchronization capability is improved, but signal processing complexity and device requirements deteriorate
Solution Approach 1:
The system employs homogeneous signal processing protocols on both the presenter's and audience devices. The same driver software and communication protocols are implemented across all devices, simplifying the overall system complexity while maintaining reliable synchronization capability through standardized, uniform processing
Data Source
AI summary
A computer executes a presentation file to display a presentation frame. An input device generates an input signal in response to a user's operation to have the computer execute a presentation control instruction. There is a signal processing protocol between a remote driver of the computer and a server driver of another computer, wherein the two computers are communicable with each other via a network, for standardizing a packing process and an unpacking process of the input signal. The server driver executes the packing process of the input signal according to the signal processing protocol and transmits the processed input signal out to the another computer. The remote driver executes the unpacking process of the input signal to have the another computer execute the presentation control instruction on the presentation frame. In this manner, the another computer may display the same presentation frame as that displayed by the computer.