Optical tape drive that performs direct read after write operati

Details Optical tape drive that performs direct read after write operati Optical tape drive that performs direct read after write operati

1997-09-30

2000-10-31

Hindi, Nabil

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Continuous consecutive storage or retrieval of interrupted...

G11B 700

Patent

active

061413127

ABSTRACT:
An optical tape drive that performs direct read after write (DRAW) operations with a plurality of optical heads, each capable of reading data from and writing data to an optical tape. The optical tape drive includes control apparatus that positions each of the optical heads at any position along the width of the optical tape, that controls each of the optical heads to either read or write data, and that receives and moves the optical tape in either one of two directions. The control apparatus performs bidirectional DRAW operations by reversing the direction of the tape and swapping the read/write functions of corresponding head units aligned with a same track. The optical tape drive may include as few as two optical heads, each operable independent of the other, so that the drive may read or write up to two tracks at a time. DRAW operations are performed on multiple tracks by increasing the number of optical head units. For example, four independent head units may be included to perform DRAW on two tracks at a time, eight head units to perform DRAW on four tracks at a time, etc. Furthermore, each head system may include multiple head units organized into an array for aligning with different tracks.

REFERENCES:
patent: 4495609 (1985-01-01), Russell
patent: 4525828 (1985-07-01), Higashiyama et al.
patent: 4807213 (1989-02-01), Chung et al.
patent: 4884260 (1989-11-01), Bouldin et al.
patent: 4970707 (1990-11-01), Hara et al.
patent: 5120136 (1992-06-01), Oakley
patent: 5369631 (1994-11-01), Hwang
patent: 5617380 (1997-04-01), Holmstorm
patent: 5617391 (1997-04-01), Ono et al.
patent: 5674583 (1997-10-01), Nakayama et al.
patent: 5680376 (1997-10-01), Katayama et al.
patent: 5715225 (1998-02-01), Victora et al.
patent: 5754514 (1998-05-01), Guerra

Affiliated with

Also associated with

Rating

Optical tape drive that performs direct read after write operati does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical tape drive that performs direct read after write operati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical tape drive that performs direct read after write operati will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2061465