Optical disk storage format, method and apparatus for emulating a magnetic tape drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 4, 1988
Issued Date -
N/A
app pub date -
Apr 13, 1987
filing date -
May 15, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An Optical Disk Storage system and method for the storage of magnetic tape records including an optical disk and a system for writing variable-length records to the disk with a plurality of embedded directories in close proximity to a plurality of records associated therewith. A high-level directory is constructed providing a list of addresses for the embedded directories. The embedded directories comprise a fixed maximum number of entries each indicating the length of a corresponding record. In a read operation, the high-level directory is accessed first to provide addresses for the embedded directories, with reference to positional information permanently written to the disk. Bytes of data are then counted in accordance with the stored record length information to access a record of interest. In this way, varying-length records can be efficiently stored on an optical disk divided into fixed-length data blocks.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully