公开(公告)号：DE68925062D1

公开(公告)日：1996-01-25

申请号：DE68925062

申请日：1989-05-03

Applicant: IBM

Inventor： BLOUNT MICHELLE KAESER ,  CLARK CONNIE MAE ,  HARDING WARREN BRUCE ,  TANG HORACE TIN SZE

IPC: G06F3/06 ,  G06F12/08 ,  G06F17/30

Abstract: Image data objects are accumulated in a relatively rapid access data buffer, such as a combination of main memory and a rapid access magnetic DASD. An optical disk recorder having a record medium with a plurality of addressable sectors each capable of storing a predetermined number of the volume table of contents (VTOC) entries receives the accumulated data objects along with the associated VTOC entries in a single access whenever the number of accumulated data objects is an integral number of said predetermined number. A lower threshold for a minimal number of data bytes of the accumulated data objects may be required before such single access data recording operation is effected. An upper threshold of number of data bytes in the accumulated objects is also provided for causing the single access data transfer irrespective of the number of objects being an integral number of said predetermined number. The invention is advantageously practiced with a write-once, read-many record medium.

公开(公告)号：DE68925062T2

公开(公告)日：1996-06-20

申请号：DE68925062

申请日：1989-05-03

Applicant: IBM

Inventor： BLOUNT MICHELLE KAESER ,  CLARK CONNIE MAE ,  HARDING WARREN BRUCE ,  TANG HORACE TIN SZE

IPC: G06F3/06 ,  G06F12/08 ,  G06F17/30

Abstract: Image data objects are accumulated in a relatively rapid access data buffer, such as a combination of main memory and a rapid access magnetic DASD. An optical disk recorder having a record medium with a plurality of addressable sectors each capable of storing a predetermined number of the volume table of contents (VTOC) entries receives the accumulated data objects along with the associated VTOC entries in a single access whenever the number of accumulated data objects is an integral number of said predetermined number. A lower threshold for a minimal number of data bytes of the accumulated data objects may be required before such single access data recording operation is effected. An upper threshold of number of data bytes in the accumulated objects is also provided for causing the single access data transfer irrespective of the number of objects being an integral number of said predetermined number. The invention is advantageously practiced with a write-once, read-many record medium.