Hi everybody

What is the common and simple method to implement a digital data filter, when the binary data on single wire is mixed with some noise.

I think using a shimmit trigger gate. But what if the noise level is above the thresold of the shimmit trigger, it will take it as valid bit.

How about first decreasing the voltage level of the data so that the noise falls enough below the thresold and only the valid data cause the gate to trigger.

Any good idea.

Simon