Dynamic Transmission Interval Control for Multi-Display Synchronization
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Solution Overview
Problem
The existing image display systems face challenges in maximizing network bandwidth usage without waste, leading to irregular image updates and frame dropping due to fixed transmission intervals, which result in unnatural display synchronization across multiple image transmission devices.
Innovation Solution
An image display device with a communication unit, display unit, measurement unit, and control unit that adjusts transmission request intervals based on measured time intervals for each image transmission device, ensuring optimal frame transmission intervals and synchronized image updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed transmission interval is used, then network bandwidth usage is simplified, but image update synchronization deteriorates
Solution Approach 1:
The patent applies dynamics by making the transmission interval adjustable rather than fixed. The image display device dynamically changes the transmission interval based on measured communication conditions and processing capabilities of each image transmission device, allowing the system to adapt to varying network loads and device performances while maintaining synchronization.
Solution Approach 2:
The patent changes the parameter of transmission interval from a fixed value to a variable that is adjusted based on measured communication characteristics. The system measures the actual time required for communication and processing, then modifies the transmission interval parameter to optimize both bandwidth utilization and image update synchronization.
2Manufacturing precision
If transmission interval is adjusted per device, then image update synchronization is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback by having the image display device measure the actual communication time and processing time for each image transmission device, then use these measurements to adjust the transmission interval. This closed-loop control ensures that each device's transmission timing is optimized based on real performance data, maintaining synchronization without requiring complex preconfiguration.
Solution Approach 2:
The system applies self-service by allowing each image transmission device to independently determine its optimal transmission interval based on its own processing capabilities and the measured network conditions. The image display device facilitates this by providing measurement data and receiving adjusted transmission intervals from each device autonomously.
3Loss of energy
If differential data compression is used, then network bandwidth efficiency is improved, but transmission time variability increases
Solution Approach 1:
The patent applies dynamics by adjusting the transmission interval to account for the variable transmission time caused by differential data compression. Rather than assuming constant transmission time, the system dynamically adapts the timing to accommodate the variability introduced by compression, ensuring synchronized updates despite bandwidth optimization.
4Productivity
If simultaneous transmission from multiple devices is allowed, then productivity is improved, but network bandwidth pressure increases
Solution Approach 1:
The patent applies periodic action by organizing transmissions from multiple image transmission devices in staggered time periods rather than simultaneously. Each device transmits at its own optimized interval, creating a periodic transmission pattern that distributes network load over time while maintaining overall system productivity and synchronization.
Data Source
AI summary
An image display device includes a communication device transmits a transmission request to each of the image transmission devices and receives a frame including differential data transmitted by each image transmission device in response to the transmission request. A measurement unit measures, for each image transmission device, a first required time interval, which is the time required from the start of transmission of the transmission request until the start of reception of the frame, and a second required time interval, which is the time required from the start of reception until the completion of reception of the frame. A control unit causes transmission requests to be sent to each of the image transmission devices at predetermined transmission intervals, causes measurement unit to measure the first and second required time intervals, and changes the transmission interval of the transmission request based on the measurement results.