Positioning control for read and/or write head

Details Positioning control for read and/or write head Positioning control for read and/or write head

2005-08-30

2005-08-30

Neyzari, Ali (Department: 2655)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C369S044270

Reexamination Certificate

active

06937426

ABSTRACT:
In a device (1) for reading and/or writing information from and on, a track on a medium (2), a read and/or write head (3) can be positioned with a positioning device (5, 20) relative to the medium (2). The read and/or write head (3) comprises a carriage (21) and means (22) for maintaining the reading and/or writing in a scanning point at the track during a transverse positioning of the track relative to the carriage (24). A control circuit (6) is present for controlling the positioning device (5, 20). There is a period of the order to magnitude of one millisecond between the supplying of a control signal to the positioning device (5, 20) at a first point in time based upon which the read and/or write head (3) has to be positioned and the actual start of the movement of the read and/or write head (3). The first point in time is before the point in time at which the maintaining means (22) reach the end of the track that is being read or written at the first point in time. The carriage (21) already moves at a certain velocity and has already been moved over a certain distance (D) when the maintaining means (22) reach the end of the track which is read or written.

REFERENCES:
patent: 4972403 (1990-11-01), Van Rosmalen et al.
patent: 5668680 (1997-09-01), Tremaine
patent: 6243336 (2001-06-01), Schell et al.
patent: 6307705 (2001-10-01), Anderson et al.
patent: 0540114 (1993-05-01), None
patent: 0607045 (1994-07-01), None

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