Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1994-12-07
1997-08-05
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 69, 360 92, 36447803, 36447806, G11B 1500
Patent
active
056548397
ABSTRACT:
A end report of the unloading operation is issued to a host computer for a period of time between after the start of the ejecting operation of a medium cartridge of a recording/reproducing unit based on an unloading command until before the end of the unloading operation, thereby allowing the next moving command to be issued precedently to the end of the actual unloading operation. Simultaneously with that the unloading operation is instructed to the recording/reproducing unit on the basis of the unloading command, the end report of the unloading operation is executed to the host computer, thereby allowing the host computer to issue the next moving command. In a data transfer control between the host computer and a control unit of a library apparatus, when the number of error times of the data transfer errors exceeds a threshold value, the subsequent data transfer speed is switched to the executable data transfer speed at which the data transfer can be retried, and the data transfer is executed.
REFERENCES:
patent: 4604661 (1986-08-01), De Shon
patent: 4907889 (1990-03-01), Simone
patent: 4928245 (1990-05-01), Moy
patent: 5274516 (1993-12-01), Kakuta et al.
patent: 5343403 (1994-08-01), Beidle
patent: 5459848 (1995-10-01), Mose
Hayakawa Akira
Kurusu Ryutaro
Sakamoto Masakazu
Tanaka Hidehiko
Faber Alan
Fujitsu Limited
Psitos Aristotelis M.
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