Method and arrangement for compensating scanning disturbances on optical recording media

Abstract

A method for storing additional data relating to menu data, particularly to thumbnail pictures, on optical media, e.g. Blu-ray discs, complies with the current standard for Blu-ray rewritable discs, which allows storage of content management information, e.g. thumbnail picture data, on dedicated locations on the disc. The method includes using relevant standardized files on the disc and relevant standardized parameters for accessing the data. In particular, the remaining part at the end of a data block within the thumbnail data file is used for storing additional data relating to the corresponding thumbnail picture data. The additional data can be used e.g. for further menu processing, or any form of content management.

Description

technical field [0001] The present invention relates to a method and a device for compensating scanning disturbances on an optical recording medium, which are caused in particular by scratches or dirt on the optical recording medium and which adversely affect the The ability to scan an optical recording medium using a light beam or laser beam in a playback or recording unit. Background technique [0002] In playback or recording units for optical recording media, the data tracks of the recording medium are scanned using a light or laser beam, denoted as scanning beam, and controlled by means of a focus control ring and a track control ring Retained in a spiral data track on an optical recording medium. In this case, the scanning beam may comprise one or more light beams or laser beams impinging on the recording medium. [0003] Optical recording media such as CDs or DVDs are largely unprotected, so normal handling is sufficient to leave their surface with scratches or dirt...

AI Technical Summary

Problems solved by technology

However, it has emerged that the scanning distance may be insufficiently compensated by means of an error rate, as measured relative to all received The number of dummy bits for the number of bits

In the presence of defects on the optical recording medium the scanning capability of the playback or recording unit is affected by the type and size and / or duration of the defect and various other parameters such as radial eccentricity, vertical disc wobble , the tangential scan angle and the adjustment accuracy of the symmetry and offset of the control signal, resulting in large tolerances regarding the scanning capability of the optical recording medium in the playback or recording unit

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