Patent ID: 6601210
Filing Date: 2003-07-29
Classification: H04L

Abstract:
A data transmission device, comprising:input circuitry, configured to receive a block of data over a network, the block containing an error-checking code, the input circuitry comprising input error-checking logic, which is adapted to detect a discrepancy between the data and the error-checking code and to generate a first error signal indicating whether the discrepancy was detected in the input circuitry; output circuitry, configured to transmit the block of data, received by the input circuitry, over the network, and comprising output error-checking logic, which is adapted to detect the discrepancy between the data and the error-checking code and to generate a second error signal indicating whether the discrepancy was detected in the output circuitry; and a comparator, coupled to receive and compare the first and second error signals, so as to identify a source of the discrepancy.