Information recording method and information reproducing method
US8218408B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/257
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to the present invention, when an apparatus performs reproduction from an optical disc of a format not compatible to the apparatus, the apparatus is prevented from obtaining an incorrect address and thus causing a malfunction. A recording method according to the present invention performs first conversion of bit-inverting m number (1≦m<n; m an integer) of symbols at prescribed positions of a code word coded using an error correction code by a Reed-Solomon code and including symbol C(i) [i=0, 1, 2, . . . n; n is an integer] to generate conversion information; and records the conversion information on a first recording medium. The first conversion is set such that a distance between first information obtained by performing inverse conversion to the first conversion on the conversion information, and second information obtained by performing inverse conversion to second conversion, which is different from the first conversion, on the conversion information, is at least ½ of a minimum free distance of the error correction code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.