Error detecting and correcting systems

Claim 1

IN COMBINATION WITH AN INFORMATION HANDLING SYSTEM HAVING A SOURCE OF BINARY CODED MULTIBIT DATA SIGNALS AND A DEVICE FOR UTILIZING SAID SIGNALS, AN ERROR DETECTING AND CORRECTING SYSTEM INTERCONNECTING THE DATA SOURCE AND THE UTILIZATION DEVICE AND OPERABLE TO DETECT, LOCAT AND CORRECT A PLURALITY OF DIFFERENT TYPES OF RELATED ERRORS OCCURING DURING THE TRANSLATION OF THE DATA SIGNALS TO THE DEVICE, THE ERROR CORRECTING SYSTEM INCLUDING AN ENCODER, A DECODER AND SIGNAL TRANSLATING MEANS CONNECTED THEREBETWEEN, THE ENCODER COMPRISING MEANS FOR SUPPLYING TO THE SIGNAL TRANSLATING MEANS A CODE GROUP SIGNAL CONSISTING OF A PREDETERMINED NUMBER OF DATA BITS, A PREDETERMINED MUMBER OF LOCATOR PARITY BITS, AND A PREDETERMINED NUMBER OF ERROR TYPE PARITY BITS, THE LOCATOR PARITY BITS BEING GENERATED FROM BIT POSITIONS OF THE CODE GROUP SIGNAL DETERMINED BY A FIRST M-SEQUENCE AND THE ERROR TYPE PARITY BITS BEING GENERATED FROM BIT POSITIONS DETERMINED BY A SECOND M-SEQUENCE, THE DECODER COMPRISING MEANS FOR GENERATING FIRST AND SECOND CHECK-SUMS FROM THE CODE GROUP SIGNAL AS RECEIVED OVER BIT POSITIONS DETERMINED BY THE M-SEQUENCES, RECIRCULATING REGISTER MEANS FOR RECEIVING THE CODE GROUP SIGNAL, FIRST AND SECOND M-SEQUENCE GENERATOR MEANS FOR RECEIVING THE FIRST AND SECOND CHECKSUMS RESPECTIVELY, MEANS COUPLED TO THE RECIRCULATING REGISTER MEANS AND TO THE FIRST AND SECOND M-SEQUENCE GENERATOR MEANS FOR SUCCESSIVELY SHIFTING THE RECIRCULATING REGISTER MEANS AND THE FIRST AND SECOND M-SEQUENCE GENERATOR MEANS IN OPPOSITE DIRECTIONS, AND MEANS RESPONSIVE TO THE FIRST AND SECOND M-SEQUENCE GENERATOR MEANS AND COUPLED TO THE RECIRCULATING REGISTER MEANS FOR CORRECTING AN IDENTIFIED TYPE OF RELATED ERROR AT A SELECTED STEP IN THE SHIFTING OF THE CODE GROUP SIGNAL, AS DETERMINED BY THE FIRST AND SECOND M-SEQUENCE GENERATOR MEANS.