Scratch protection in tape data storage system
US6282039A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/916
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of redundancy coding of user data received from a host apparatus and storage of said coded data on a magnetic tape data storage medium comprises inputting a byte stream of user data into a buffer and assembling a plurality of data sets in the buffer; for each data set assembling a data set into a two-dimensional data array and (1103) applying a second redundancy coding algorithm (C2 parity) to the two-dimensional data set in a second dimension; applying (1105) a first redundancy coding (C1 parity) algorithm to the second redundancy coded data array in a first dimension to form a two-dimensional data frame having second and first redundancy coding in respective second and first dimensions, the two-dimensional data frame comprising a plurality of rows, each row comprising a first codeword and a plurality of columns, each column comprising a second codeword; partitioning the two-dimensional data frame into a plurality of logical track blocks (1106) each comprising a plurality of first codewords; and recording (1110) each logical track block to a corresponding respective physical track on the magnetic tape data storage medium. Redundancy coding of a data frame is distributed a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.