Wireless Image Transfer Synchronization Deviation Control
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Solution Overview
Problem
Existing image transfer systems using wireless communication face issues with synchronization timing adjustments due to changes in arrival time of captured image data, leading to unnecessary processing loads and disturbances in moving image displays, as they react sensitively to sudden changes in arrival time.
Innovation Solution
An image transfer system with an image transmitter and receiver that calculates synchronization deviation times and adjusts the cycle of synchronization signals based on specific communication data, minimizing unnecessary timing adjustments and maintaining stable image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback control is performed based on vertical synchronization marker position to minimize arrival time changes, then synchronization timing is improved, but processing load increases and unnecessary timing adjustments occur
Solution Approach 1:
The system implements feedback control by monitoring the arrival time of captured image data and comparing it with the display timing. When the arrival time falls outside the predetermined range, the system transmits synchronization adjustment information to correct the timing, thereby maintaining reliable synchronization while avoiding unnecessary adjustments through range-based thresholds
Solution Approach 2:
The system changes the parameter being monitored from the position of vertical synchronization markers to the arrival time of captured image data itself. This parameter change reduces processing complexity by eliminating the need to extract and analyze marker positions, while still achieving effective synchronization control through arrival time measurement
2Measurement precision
If timing adjustment is performed for every sudden change in arrival time, then synchronization precision is improved, but image display stability deteriorates
Solution Approach 1:
The system applies partial action by only performing timing adjustments when the arrival time deviation exceeds a predetermined range. This selective approach prevents unnecessary adjustments for minor fluctuations, thereby maintaining synchronization precision for significant deviations while ensuring display stability by ignoring insignificant timing variations
3Measurement precision
If vertical synchronization marker is added to captured image data for timing monitoring, then timing measurement precision is improved, but data transmission volume increases
Solution Approach 1:
The system extracts timing information directly from the captured image data by monitoring its arrival time at the receiver. This extraction approach eliminates the need to embed vertical synchronization markers within the image data, thereby achieving precise timing measurement without increasing the data transmission volume with marker information
Data Source
AI summary
A synchronization signal generation function of an image transmitter is configured to generate an imaging synchronization signal. One or more processors of the image transmitter cause an imager of the image transmitter to perform new imaging every time the imaging synchronization signal is generated and cause communication data corresponding to captured image data output from the imager to be transmitted from a communicator of the image transmitter to an image receiver by radio waves. A synchronization signal generation function of the image receiver is configured to generate a display synchronization signal. One or more processors of the image receiver is configured to generate a display image corresponding to the captured image data from the communication data received by radio waves in a communicator of the image receiver and cause a monitor of the image receiver to display a newly generated display image every time the display synchronization signal is generated.