Digital Tape Format
'Digital Tape Format ' is a magnetic tape data storage format developed by Sony. It uses a 1/2" wide tape, in a cassette with two reels, which is written and read with a helical scan process. The format is described by the ECMA 248 (adopted June 1998) and ISO/IEC 15731 standards. There are two sizes of tape cassettes, "S" and "L".
Generations
Generation |
DTF-1 |
DTF-2 |
Release Date |
1994 | 1999 |
"S" Capacity (GB) |
12 | 60 |
"L" Capacity (GB) |
42 | 200 |
Max Speed (MB/s) |
12 | 24 |
Notes:
- Both used ALDC compression
- DTF-2 used Fibre Channel or SCSI interfaces
- The tape cassettes are similar to those of Sony Betacam.
External links
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| Linear | Wide (19 - 25.4 mm) | |
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| Half inch (12.7 mm) | |
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| Eight millimeter (8 mm) | |
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| Quarter inch (6.35 mm) |
- QIC (1972)
- SLR (1986)
- Ditto (1992)
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| "Eighth" (0.15) inch (3.81 mm) | |
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| Stringy (1.58–1.9 mm) | |
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| Helical | Three quarter inch (19 mm) |
- Sony DIR (19xx)
- Ampex DST (1992)
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| Half inch (12.7 mm) | |
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| Eight millimeter (8 mm) | |
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| Four millimeter (3.81 mm) | |
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