公开(公告)号：EP0284037B1

公开(公告)日：1997-12-29

申请号：EP88104641

申请日：1988-03-23

Applicant: IBM

Inventor： FLANNAGAN WILLIAM JOSEPH ,  KERN RONALD MAYNARD ,  KULAKOWSKI JOHN EDWARD ,  WAGNER ROBERT E

IPC: G06F12/00 ,  G06F3/06 ,  G06F17/30 ,  G11B7/007 ,  G11B20/12 ,  G11B20/18 ,  G11B27/28 ,  G11B27/32 ,  G06F15/40 ,  G11B7/013

CPC classification number: G06F17/30955 ,  G06F3/0601 ,  G06F2003/0697 ,  G11B7/00745 ,  G11B20/1252 ,  G11B20/1883 ,  G11B27/28 ,  G11B27/329 ,  G11B2020/10907 ,  G11B2020/1224 ,  G11B2020/1893 ,  G11B2020/1896 ,  G11B2220/20 ,  G11B2220/218 ,  G11B2220/2537

Abstract: An updatable and expandable directory structure and resultant access procedures emulating a write-once or indelible record medium (20) to a rewriteable record medium as to accessing characteristics. The directory is indexed; one directory header for a first set of files indexes another set of files. Sector clusters or data extents are managed such that random recording from any file proceeds independently of write-once characteristics. The directory is stored on the medium as data is recorde. Each directory entry contains an archival history of recording of a related data file in the medium. Both logical and physical addressing is employable.

公开(公告)号：DE3856090T2

公开(公告)日：1998-06-25

申请号：DE3856090

申请日：1988-03-23

Applicant: IBM

Inventor： FLANNAGAN WILLIAM JOSEPH ,  KERN RONALD MAYNARD ,  KULAKOWSKI JOHN EDWARD ,  WAGNER ROBERT E

IPC: G06F12/00 ,  G06F3/06 ,  G06F17/30 ,  G11B7/007 ,  G11B20/12 ,  G11B20/18 ,  G11B27/28 ,  G11B27/32 ,  G11B7/013

Abstract: An updatable and expandable directory structure and resultant access procedures emulating a write-once or indelible record medium (20) to a rewriteable record medium as to accessing characteristics. The directory is indexed; one directory header for a first set of files indexes another set of files. Sector clusters or data extents are managed such that random recording from any file proceeds independently of write-once characteristics. The directory is stored on the medium as data is recorde. Each directory entry contains an archival history of recording of a related data file in the medium. Both logical and physical addressing is employable.

公开(公告)号：DE3856090D1

公开(公告)日：1998-02-05

申请号：DE3856090

申请日：1988-03-23

Applicant: IBM

Inventor： FLANNAGAN WILLIAM JOSEPH ,  KERN RONALD MAYNARD ,  KULAKOWSKI JOHN EDWARD ,  WAGNER ROBERT E

IPC: G06F12/00 ,  G06F3/06 ,  G06F17/30 ,  G11B7/007 ,  G11B20/12 ,  G11B20/18 ,  G11B27/28 ,  G11B27/32 ,  G11B7/013

Abstract: An updatable and expandable directory structure and resultant access procedures emulating a write-once or indelible record medium (20) to a rewriteable record medium as to accessing characteristics. The directory is indexed; one directory header for a first set of files indexes another set of files. Sector clusters or data extents are managed such that random recording from any file proceeds independently of write-once characteristics. The directory is stored on the medium as data is recorde. Each directory entry contains an archival history of recording of a related data file in the medium. Both logical and physical addressing is employable.

公开(公告)号：BR8801415A

公开(公告)日：1988-11-01

申请号：BR8801415

申请日：1988-03-28

Applicant: IBM

Inventor： FLANNAGAN WILLIAM JOSEPH ,  KERN RONALD MAYNARD ,  KULAKOWSKI JOHN EDWARD ,  WAGNER ROBERT E

IPC: G06F12/00 ,  G06F3/06 ,  G06F17/30 ,  G11B7/007 ,  G11B20/12 ,  G11B20/18 ,  G11B27/28 ,  G11B27/32 ,  G06F12/02

Abstract: An updatable and expandable directory structure and resultant access procedures emulating a write-once or indelible record medium (20) to a rewriteable record medium as to accessing characteristics. The directory is indexed; one directory header for a first set of files indexes another set of files. Sector clusters or data extents are managed such that random recording from any file proceeds independently of write-once characteristics. The directory is stored on the medium as data is recorde. Each directory entry contains an archival history of recording of a related data file in the medium. Both logical and physical addressing is employable.