Method and means for invertibly mapping binary sequences into rate 2/3 (1,K) run-length-limited coded sequences with maximum transition density constraints
US6195025A · kind A · utility
10Cited by
9References
8Claims
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Key dates
| Filing date | Jul 13, 1998 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Jul 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and means for reducing high-duty-cycle unconstrained binary signal sequences in storage and communications processes and systems by invertibly mapping such sequences into a (1, k) rate 2/3 RLL codestream constrained to a duty cycle substantially approximating one-third. That is, binary sequences ordinarily mapping into high-duty-cycle RLL-code sequences are either inhibited from repeating indefinitely or excluded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.