Method and apparatus for detecting errors in DVD data
US6321351A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for processing data read from a DVD media containing stored data is described. The apparatus includes a DVD media reader for reading data and error information stored on a DVD media, an error processor for determining the number of errors in the read data, and a display means for displaying the number of errors. The method includes the steps of reading actual data from a DVD media, computing a first correction code for the actual data, reading a second correction code from the DVD media, the second correction code pertaining directly to said stored data, and comparing the first and second correction codes to determine whether said actual data needs to be corrected. The method further includes the steps of determining whether the number of errors in the actual data exceeds the number of errors that can be corrected, correcting the actual data if possible, and counting the number of errors that are corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.