公开(公告)号：HK203496A

公开(公告)日：1996-11-15

申请号：HK203496

申请日：1996-11-07

Applicant: IBM

Inventor： DUNN EDWIN CHARLES ,  FRY SCOTT MILTON ,  JACKSON SCOTT ARIE ,  MACLEAN NEIL HECTOR JR ,  REYNOLDS RICHARD PORTER ,  RIPBERGER RICHARD ANTHONY

IPC: G06F3/06 ,  G11B20/12

Abstract: Information bearing signals are recorded in one of a plurality of record formats on one record medium, such as a magnetic tape, magnetic disk, optical disk, and the like. The format selected may be commanded or based upon record lengths, in bytes. When the record length equals or exceeds a predetermined number of bytes, then one record is recorded in each signal block of the record format. When the record length is less than the predetermined number, then a second format is used which inserts several of the records in one of the signal blocks. The signal block and its packets respectively contain indications of formats such that any one of several formats may be used on one record medium and in one signal block having a plurality of variable length packets. Logical indicators, such as format marks, tape marks, and the like, may separate formats used on the storage medium.

公开(公告)号：CA2644997A1

公开(公告)日：2007-11-15

申请号：CA2644997

申请日：2007-04-16

Applicant: IBM

Inventor： THOMPSON JOHN GLENN ,  SUTTON PETER GRIMM ,  RIPBERGER RICHARD ANTHONY ,  KALOS MATTHEW JOSEPH ,  YUDENFRIEND HARRY MORRIS ,  RHOTEN WAYNE ERWIN ,  CAMMARATA JAMES

IPC: G06F3/06

Abstract: Provided are a system and article of manufacture for providing an address format compatible with different addressing formats used for addressing different sized address spaces. An address format is used in an operating system to address storage space in a storage device comprising a first region and a second region of storage space. A first group of applications uses the address format to only address the storage space in the first region and is not coded to use the address format to access the second region and a second group of applications uses the address format to address the storage space in the first and second regions.

公开(公告)号：DE69517256T2

公开(公告)日：2000-12-21

申请号：DE69517256

申请日：1995-07-03

Applicant: IBM

Inventor： RIPBERGER RICHARD ANTHONY

IPC: G06F12/14 ,  G06F3/06 ,  G06F21/00 ,  G06F21/24 ,  G06F1/00

Abstract: A method and system for limiting access to a media storage device such as a tape drive unit. In accordance with the inventive method, a set of control parameters is generated for the device for a given application program. A tape control unit uses the parameters to process commands from the application program and thereby control access to the tape. In an illustrative application, an extent is defined on the tape and controls are defined which govern the type of access permitted within the extent. The system rejects any commands which attempt to access medium outside of the defined extent. Write and formatting commands within the extent are limited and partition changes, loads and unloads are prohibited.

公开(公告)号：DE69028601T2

公开(公告)日：1997-03-13

申请号：DE69028601

申请日：1990-11-21

Applicant: IBM

Inventor： MACLEAN NEIL HECTOR ,  PATEL MAYANK RAMAN ,  RIPBERGER RICHARD ANTHONY

IPC: G06F15/16 ,  G06F5/00 ,  G06F15/173 ,  H03M7/42 ,  H03M7/40

公开(公告)号：DE69028601D1

公开(公告)日：1996-10-24

申请号：DE69028601

申请日：1990-11-21

Applicant: IBM

Inventor： MACLEAN NEIL HECTOR ,  PATEL MAYANK RAMAN ,  RIPBERGER RICHARD ANTHONY

IPC: G06F15/16 ,  G06F5/00 ,  G06F15/173 ,  H03M7/42 ,  H03M7/40