METHOD AND DEVICE FOR DETECTING RUNNING DISPARITY ERROR

• Main Authors: LEE, HYEONG HO, DO, HAN CHEOL, LEE, SEUNG SU, SONG, SANG SEOP, LEE, HYEONG SEOP
• Format: Patent
• Language: English; Korean
• Published: 09.07.2001
• Edition: 7
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PURPOSE: A method and a device for detecting an RD(Running Disparity) error are provided to directly calculate the disparity in an 8B/10B parallel data row, and to use only one byte clock in a parallel data row in a function calculating the number of 1(one). CONSTITUTION: A TOT-ONE function(21) receives a pre-data row, to calculate the number of 1(one) and generate a TOT-ONE value. A byte flip-flop(22) receives a pre-data row to generate a present data row. An RD(Running Disparity)-ONE function(23) calculates the number of 1(one) of a 3B/4B bit row and a 5B/6B bit row, to generate an RD4-ONE value and an RD6-ONE value. A PRE-RD function(24) generates a pre-RD value using the TOT-ONE value and the RD4-ONE value. And an RD error checking unit(25) detects whether an RD error exists in a data row.