Optical disc recording method and optical disc reproducing method
US7209422B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2002 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Jan 18, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00586
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disc recording method is provided for superimposing sub information by displacing edges of one or more optically-readable recording marks by a minute amount on the basis of a binary sequence code, when recording main information by forming said one or more recording marks, the optical disc recording method including a sequence generation step of generating a first binary sequence code and a second binary sequence code that is different from the first binary sequence code; a first displacement step of displacing one of the edges according to the first binary sequence code; and a second displacement step of displacing another of the edges according to the second binary sequence code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.