Method for sampling, controlling and transmitting data synchronously
A data transmission method and synchronous sampling technology, applied in signal transmission systems, electrical signal transmission systems, instruments, etc., can solve the problems of occupying channel resources, accuracy cannot be guaranteed, sensitivity reduction, etc., and achieve high data transmission rate and real-time performance. Good and reliable effect
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[0032] 1. The system has a master-slave structure, the master side samples regularly, and the slave side is controlled by the master side and returns the sampling data. In the figure, ADC_SYN is the main-side ADC start signal, and ESYN is the channel encoder start data transmission pulse. DSYN outputs a synchronization signal for the channel decoder. The slave uses the make signal to start the ADC and the master uses ESYN and DSYN to calculate the signal delay. LOCK is that the decoder receives valid encoded data and locks it.
[0033] 2. Signal encoding and decoding
[0034] Invention using such as figure 2 Channel coding scheme for sampling synchronization and data transmission:
[0035] figure 2 Channel Coding Diagram
[0036] t h -- synchronization signal t f --Sync frame width t 0 --logic 0 encoding t 1 --logic 1 encoding
[0037] T--symbol width T s -- sync time
[0038] The encoded high level contains information, two consecutive widths t h (=3 / 4T) indic...
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