Data modulation and correction methods for use with data written to and read from recording media
US6600431B1 · kind B1 · utility
19Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Oct 11, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/145
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data modulation method resistant to channel distortion and a method of correcting error in data coded by the modulation method. The data modulation method uses a run length limited (RLL) modulation code applied to write data to an optical storage medium, the RLL modulation code being expressed as RLL (d, k, m, n, s) with s=2 or greater, where d is minimum run length, k is maximum run length, m is a data bit length before modulation, n is a codeword bit length after modulation, and s is a space length between codewords. Further, the data modulation method provides run lengths expressed as in+1=in+s (n=1, 2, . . . ), where i1=d.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.