Patent ID: 7680179

Claim:
A data communication system, comprising: a transmitter for transmitting data; a receiver for receiving the data; and a self-test circuit coupling the data transmitted from the transmitter to the receiver, and for reducing a time period during which the data can be received by the receiver, said self-test circuit including: a random digital sequence generator capable of selectively issuing a series of digital 1 and 0 bits in a random sequence; and an activate circuit coupled to an output of the sequence generator and which responds to receipt of a pre-set sequence of the digital bits from the sequence generator by initiating a self-test operation by which the data communication system dynamically adjusts, on a random basis, the time period in which data windows are present within transmitting data signals, wherein the pre-set sequence indicates transmission of test data and addition of jitter to other systems to perform the self-test operation.