Information recording medium, and method and system for reading and writing information thereon
US6515950B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jul 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There are provided an information recording medium, and a method and system for reading and writing information thereon, which make it possible to facilitate recording by rewriting in use of the rewritable DVD repeatedly by rewriting. When one piece of or a plurality of pieces of program data VRO having already been recorded in a real-time data recording area A3 is reproduced, history management information indicating that the program data has been reproduced is recorded in a predetermined management information recording area A2 of the rewritable DVD, corresponding to the aforementioned one piece of or the aforementioned plurality of pieces of the program information. Moreover, when other program data is recorded, the other program data is adapted to overwrite automatically the program data VRO, having been already recorded, corresponding to the history management information recorded in the management information recording area A2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.