Patent ID: 8169918

Claim:
An apparatus comprising: a first buffer having a plurality of storage elements adapted to store respective portions of received information; a second buffer coupled to the first buffer and having a plurality of storage elements corresponding to respective ones of the storage elements of the first buffer; and controller circuitry coupled to the buffers and operative to detect a message sequence comprising a plurality of said portions of the received information; wherein the second buffer stores a previously-detected message sequence loaded from the first buffer into the second buffer under control of the controller circuitry; wherein the controller circuitry in detecting a current message sequence is configurable in at least first and second different monitoring modes each associated with a different message format; and wherein the controller circuitry comprises a first comparator operative to compare a current message sequence stored in the first buffer with the previously-detected message sequence stored in the second buffer and to generate a new sequence indicator if the current message sequence does not match the previously-detected message sequence.