Method and apparatus for preventing overwriting of data by identifying unrecorded portions of a recording medium and recording information thereon
US5936786A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1996 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Sep 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method and apparatus for recording and protecting information recorded on a recording medium. The method includes the steps of setting up a mode in which recording is performed on portions of the medium on which information has not been recorded in the medium, detecting portions of the medium where information has not been recorded in the recording medium, selecting a portion on which new information may be recorded among the detected portions, and recording new information from a starting position of the portion selected in the selecting step. According to the present invention, it is possible to prevent the unintentional erasure of the information recorded on the recording medium by confirming that the portion on which the information is recorded is a blank portion and recording new information on the blank portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.