Method for detecting blank area of power calibration area
US8274869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Sep 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/00736
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for detecting a blank area of a power calibration area. The method includes the steps of: selecting a recording test area in the power calibration area; writing the recording test area with multiple stages of normal power and detecting power; forming multiple normal blocks and detecting blocks, wherein each of the detecting blocks includes one unit of unrecorded block and one unit of recorded block; and reading information from the unrecorded blocks of the detecting blocks and thus determining whether the unrecorded blocks of the detecting blocks are blank or not. Once all the unrecorded blocks of the detecting blocks are determined to be blank, it represents that the selected recording test area is totally blank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.