Patent ID: 6581183
Filing Date: 2003-06-17
Classification: H03M,H04L

Abstract:
In a data communications system comprising a first transceiver connected to a second transceiver through a communication channel wherein the first and second transceivers each comprise a transmitter and a receiver that employ a data encoding and decoding algorithm function, respectively, the method of re-synchronizing sets of transmitter and receiver state variables supporting the data encoding and decoding algorithm function upon detection of an error comprising the steps of:defining a new command called the RRESET command which signals an error event; signaling by a receiving transceiver receiver to the receiving transceiver transmitter of an error detected in data received from a transmitting transceiver; switching by the receiving transceiver transmitter to Transparent Mode and sending one or more RRESET commands to the transmitting transceiver to initialize a re-synchronization procedure; when the RRESET command is detected in a received bit stream at the transmitting transceiver, signaling by the transmitting transceiver receiver to the transmitting transceiver transmitter and, in response, switching by the transmitting transceiver transmitter to Transparent Mode and sending one or more RESET commands to the receiving transceiver and then resetting the transmitting transceiver's set of transmitter state variables; and when the RESET command is detected at the receiving transceiver, resetting the receiving transceiver's set of receiver state variables, so that it is in synchronization with the transmitting transceiver set of transmitter state variables, thereby completing the re-synchronization procedure so that the set of transmitter and receiver state variables used for a reverse path are not affected.