US 2018/0053527 A1 · TRACK-DEPENDENT DECODING

Abstract

In one embodiment, an apparatus includes a controller and logic integrated with and/or executable by the controller. The logic is configured to perform track-dependent erasure decoding on encoded data based on detection of one or more time-varying signal quality issues associated with at least one of a plurality of tracks read simultaneously from a data storage medium. In another embodiment, a method includes determining, by a magnetic tape drive, track signal quality reliability for a plurality of tracks read simultaneously from a magnetic tape medium. In addition, the method includes performing, by the magnetic tape drive, track-dependent erasure decoding on encoded data based on detection of one or more time-varying signal quality issues associated with at least one of the plurality of simultaneously-read tracks.

Claims20

Dependent claims

An apparatus, comprising:

a controller and logic integrated with and/or executable by the controller, the logic being configured to:
perform track-dependent erasure decoding on encoded data based on detection of one or more time-varying signal quality issues associated with at least one of a plurality of tracks read simultaneously from a data storage medium.

A computer program product, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the embodied program instructions being executable by a processor to cause the processor to:

determine, by the processor, track signal quality reliability for a plurality of tracks read simultaneously from a magnetic tape medium;
and
perform, by the processor, track-dependent erasure decoding on encoded data based on detection of one or more time-varying signal quality issues associated with at least one of the plurality of simultaneously-read tracks.

A method, comprising:

determining, by a magnetic tape drive, track signal quality reliability for a plurality of tracks read simultaneously from a magnetic tape medium;
and
performing, by the magnetic tape drive, track-dependent erasure decoding on encoded data based on detection of one or more time-varying signal quality issues associated with at least one of the plurality of simultaneously-read tracks.

Dependencies are inferred from the claim text.

Facts

Application

15/785,281Filed 16 Oct 2017

Priority

19 Nov 2015

Published

22 Feb 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

G11B 20/1816
Error detection or correction; Testing , e.g. of drop-outs: testing
G11B 20/1833
Error detection or correction; Testing , e.g. of drop-outs: by adding special lists or symbols to the coded information
G11B 2020/10898
Digital recording or reproducing: overwriting or replacing recorded data
G11B 2020/1853
By adding special lists or symbols to the coded information: using a product code which has inner and outer parity symbols

Family

Application14/946,580Continuation · filed 19 Nov 2015

Application15/179,789Continuation · filed 10 Jun 2016

Application15/785,281Continuation

US 10,229,713 B2Related patent

US 2017/0148486 A1Published application

US 9,412,410 B1Related patent

US 9,837,117 B2Related patent

US 2018/0053527 A1This patent

From the US filing history. Foreign family members aren’t listed.

Track-dependent decoding

Life of this patent

Track-dependent decoding

Life of this patent

Abstract

Claims20