Patent ID: 6229866
Filing Date: 2001-05-08
Classification: H04L

Abstract:
An apparatus for detecting errors in an asynchronous data receiver and transmitter, comprising:a first sample block for sampling a center portion of a bit of a received serial data which is asynchronous and digital;a first storing part for storing a first value of the serial data bit sampled by the first sample block for a period of time;a second sample block for sampling an edge portion of the received serial data bit, wherein the first sample block and the second sample block sample the received serial data bit at a same rate;a second storing part for storing a second value of the serial data bit sampled by the second sample block for the period of time, wherein the first value and the second value of the serial data bit are always identical when no error is present; anda comparing part for receiving and comparing the first value and the second value of the serial data bit stored in the first and second storing parts and outputting an error signal if the first value and the second value are not identical.