Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output expansion
Reexamination Certificate
2005-03-18
2009-11-17
Tsai, Henry W. H. (Department: 2184)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output expansion
C710S033000, C710S062000
Reexamination Certificate
active
07620740
ABSTRACT:
A file is transferred directly between a parent magnetic-disk device and a child magnetic-disk device. In one embodiment, a parent magnetic-disk device has a host-mode execution program, whereas a child magnetic-disk device is capable operating in a device mode as is the case with an ordinary magnetic-disk device. The parent magnetic-disk device has an operating-mode-setting unit including a special-purpose jumper block. An MPU employed in the parent magnetic-disk device executes the host-mode execution program to put the parent magnetic-disk device in a host mode. At an activation time, the MPU refers to the logic of the special jumper block to start an operation in the host mode. The MPU controls the parent magnetic-disk device to directly transfer a file to the child magnetic-disk device. Thus, the file can be transferred between the parent and child magnetic-disk devices without intervention by a host computer.
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Hashimoto Minoru
Kotani Yasuhiro
Okada Kenji
Oshikawa Hiroshi
Takahashi Keishi
Henkhaus John
Hitachi Global Storage Technologies - Netherlands B.V.
Townsend and Townsend / and Crew LLP
Tsai Henry W. H.
Tseng Cheng-Yuan
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