Hewlett-Packard Development Company, L.p.

Allan Hodkinson

Rafel Jibry

Plural information transfer elements transfer signals from plural magnetic tape tracks of plural tapes. Each element and track has a different non-linear transfer function. A processor (1) determines appropriate compensation for the signal one of the transfer elements derives, (2) accesses stored information for compensation characteristics of each of the data transfer elements, and (3) references the accessed information with the compensation determined for the one element to establish an appropriate compensation for the other elements.

Apparatus and method for use in transferring information relative to a storage medium

Drop-outs in a data read channel having one or more controllable elements are managed. A data read channel derives a signal having at least one drop-out characterising parameter from which data are to be recovered. The signal from the data read channel is tapped and compared with at least one drop-out characterising parameter of the tapped signal with two or more thresholds to categorise the drop-out. One or more elements of the data read channel is controlled in response to the category of the drop-out.

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Bedminster, United Kingdom

Allan Hodkinson