MIPI Signal Receiver Byte Boundary Search for Data Accuracy
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Solution Overview
Problem
Existing MIPI signal transmission systems face issues with data loss and errors due to electromagnetic interference (EMI) affecting clock signals, leading to inefficient transmission and accuracy problems.
Innovation Solution
A signal receiving apparatus and method that includes a signal receiver, selector, decoding apparatus, and byte boundary searcher to adjust the clock signal based on decoding error and byte tuning information, ensuring accurate data reception by correcting byte shifts caused by interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the SOT signal is periodically transmitted to avoid data packet errors, then the reliability of data transmission is improved, but the transmission efficiency deteriorates due to bandwidth occupation
Solution Approach 1:
The patent implements a feedback mechanism where the receiver detects byte boundary alignment status and sends control signals back to the transmitter. When misalignment is detected, the receiver requests retransmission of only the affected data packets rather than periodic SOT signals, thereby maintaining reliability while improving transmission efficiency.
Solution Approach 2:
The patent changes the parameter of error correction approach from periodic synchronization (SOT signals) to on-demand correction based on byte boundary detection. This allows the system to adaptively respond to actual transmission errors rather than using fixed periodic corrections, resolving the contradiction between reliability and efficiency.
2Reliability
If differential signal is used to mitigate EMI influence, then the reliability of data transmission is improved, but the device complexity increases
Solution Approach 1:
The patent introduces a byte boundary searcher as an intermediary component that detects alignment status without requiring complex differential signaling. This intermediary mechanism provides reliability improvement through simple boundary detection and control signal generation, avoiding the complexity of differential signal implementation.
3Measurement precision
If byte boundary searching is performed continuously to correct clock signal issues, then the data accuracy is improved, but the processing time increases
Solution Approach 1:
The patent implements periodic byte boundary searching at specific intervals (e.g., at the start of each data packet or after detected errors) rather than continuous searching. This periodic approach maintains data accuracy by detecting boundary misalignment while minimizing processing time by avoiding redundant continuous searches.
Solution Approach 2:
The patent performs byte boundary searching in advance at predetermined points (such as packet boundaries) before data transmission issues manifest. This preliminary action allows the system to detect and correct potential alignment problems proactively, improving data accuracy while reducing the need for time-consuming corrective searches later.
Data Source
AI summary
A signal receiving apparatus and method adapted for receiving a MIPI signal are disclosed. The signal receiving apparatus includes a signal receiver, a selector, a decoding apparatus and a byte boundary searcher. The signal receiver receives a clock signal, and obtains an input data stream according to the clock signal. The selector outputs the input data stream to a first or second output terminal according to a decoding error signal. The byte boundary searcher operates a boundary searching operation on the input data stream for generating a byte tuning information, wherein, the signal receiver adjusts the clock according to the byte tuning information for adjusting the input data stream.