公开(公告)号：DE2341952A1

公开(公告)日：1974-03-07

申请号：DE2341952

申请日：1973-08-20

Applicant: IBM

Inventor： DEVORE ERNEST WILLIAM ,  HALL PHIL HARLAN

IPC: H03M13/00 ,  G06F11/10 ,  G06K5/00 ,  G11B20/18 ,  G11B5/02

Abstract: A digital magnetic recording system or a signal transmission system employs an error detection and correction code capable of correcting k+n error conditions (k and n are positive integers) whenever quality signals point to an error-prone condition. Such error correction code can detect and correct k errors without pointers in a given set of data signals. At the transmitter, or during a recording operation, the recording of signal transfer is monitored. In addition, signals are recovered and processed through error detection and correction circuits for pointing to said k error conditions. Such k error conditions are then compared with the error-prone condition signals. An okay signal is provided if there are no errors or if there are k error conditions wherein the error locations within a set of data signals are pointed to both by the error-prone condition signals and the error correction code. An error condition exists if there are k+n (k=1 or more) or more errors or if the comparison for k error conditions is not met.

公开(公告)号：DE2364705A1

公开(公告)日：1974-06-27

申请号：DE2364705

申请日：1973-12-27

Applicant: IBM

Inventor： DEVORE ERNEST WILLIAM ,  HALL PHIL HARLAN ,  IRWIN JOHN WILLIAM

IPC: G06F12/16 ,  G06F3/06 ,  G06F11/00 ,  G06F11/10 ,  G11B20/12 ,  G11B20/18 ,  H03M13/00 ,  G11B5/02

公开(公告)号：DE2364302A1

公开(公告)日：1974-06-27

申请号：DE2364302

申请日：1973-12-22

Applicant: IBM

Inventor： DEVORE ERNEST WILLIAM ,  HALL PHIL HARLAN ,  IRWIN JOHN WILLIAM

IPC: H03M13/00 ,  G11B20/18 ,  G11B20/20 ,  G11B5/44