Transmission Device Synchronization Recovery Using Counter-Based Signal Segmentation
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Solution Overview
Problem
Noise interference can temporarily disrupt synchronization between the encoding and decoding processes in transmission/reception systems, leading to issues like screen flickering and incomplete image display in image display devices, especially when the synchronization signal is damaged.
Innovation Solution
A transmission device and reception device system that uses a counter to generate a synchronization signal with alternating cycles and a data buffering unit to select and output data bits, allowing for early recovery of synchronization by distinguishing between valid and invalid data periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specific data is transmitted at predetermined timing based on DE signal for synchronization, then synchronization between encoding and decoding processes is maintained, but when noise damages the synchronization signal, synchronization cannot be recovered until the next specific data transmission
Solution Approach 1:
The synchronization signal is segmented into multiple bits within each horizontal synchronization period, allowing the reception device to detect synchronization status more frequently. Instead of relying on a single specific data transmission, the system divides the synchronization information across multiple signal segments, enabling earlier detection and recovery from noise interference.
Solution Approach 2:
The invention implements periodic transmission of synchronization signals at fixed intervals within each horizontal sync period. This periodic action creates regular opportunities for the reception device to detect and recover synchronization, reducing the time loss compared to waiting for the next specific data transmission event.
2Area of stationary object
If serial data transmission with CDR technology is used to reduce transmission paths and substrate area, then the number of transmission paths and substrate area are reduced, but noise interference can still disrupt synchronization between encoding and decoding processes
Solution Approach 1:
The invention introduces a dedicated synchronization signal as an intermediary element that mediates between the transmitted serial data and the decoding process. This synchronization signal acts as a reference that helps the reception device maintain proper synchronization even when noise interferes with the data transmission, thus protecting the simplified serial transmission architecture from reliability issues.
3Reliability
If specific data is transmitted for every bit or frame of image data to maintain synchronization, then synchronization is maintained, but transmission efficiency decreases due to increased overhead
Solution Approach 1:
Instead of transmitting full synchronization information for every bit or frame, the invention applies partial action by embedding synchronization signals at strategic points within the horizontal synchronization period. This provides sufficient synchronization reliability without the excessive overhead of per-bit synchronization, thus maintaining data transmission efficiency.
Data Source
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AI summary
A transmission/reception system 1 includes a transmission device 10 configured to transmit image data and a reception device 20 configured to receive the image data transmitted from the transmission device 10. The transmission device 10 includes a serializer 11, an encoding unit 12, a data buffering unit 13, a data selection unit 14, a counter 15, and a synchronization signal generation unit 16. The data buffering unit 13 buffers data every n bits in synchronization with the clock. The data selection unit 14 outputs m-bit data selected from the data buffered by the data buffering unit 13 on the basis of a count value from the counter 15.