Data extracting method and data extracting device

[0046] Please refer to figure 1 , which shows the device 10a according to the third embodiment of the present invention; the device 10a can be integrated and implemented in a chip, extract the data carried by it from a signal Din, and distinguish each bit in the signal Din (that is, the bit metadata). For example, the signal Din may include a pair of differential interface signals. The device 10 a is provided with a unit bit detector 12 a , a decoder 14 and a buffer 16 . A sampling module 18 , a synchronous detector 20 , a data length calculator 22 a , a bit refresher 24 and a low-pass filter 26 are provided in the unit bit detector 12 a.

[0047] In the unit bit detector 12a, the sampling module 18 is coupled to the signal Din and a sampling clock CLK, and samples the signal Din according to the trigger of the sampling clock CLK to obtain a plurality of sampling values; these sampling values ​​are arranged in sequence in the data Ds. The sampling module 18 is also coupled...