Method of masking data on digital video disks (DVD)

Details Method of masking data on digital video disks (DVD) Method of masking data on digital video disks (DVD)

1996-08-20

1999-11-30

Neyzari, Ali

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 48, 369 54, G11B 1722

Patent

active

059954574

ABSTRACT:
A DVD data masking method comprising the steps of determining the position of the start location, determining the position of the stop location, positioning at least one data track on the DVD between the start location and the stop location, identifying the pre-gap before the start location, and impressing data on the DVD and within the pre-gap for generating the concealed track having a hidden recording area for containing concealed data which can be accessed upon demand for transcription to another medium or for playback. Also, a DVD data masking method is comprising the steps of determining the position of the start location, determining the position of the stop location, positioning at least one data track on the DVD between the start location and the stop location, identifying the gap before a track, and impressing data on the DVD and within the gap for generating the concealed track having a hidden recording area for containing concealed data which can be accessed upon demand for transcription to another medium or for playback. Still further, a DVD is provided pursuant to the methods described.

REFERENCES:
patent: 4719615 (1988-01-01), Feyrer et al.
patent: 5293568 (1994-03-01), Oshiba et al.
patent: 5517447 (1996-05-01), Bolan et al.
patent: 5526338 (1996-06-01), Hasman et al.
patent: 5528570 (1996-06-01), Kondo
patent: 5536456 (1996-07-01), Kuhwahara et al.
patent: 5538125 (1996-07-01), Okabe
patent: 5538773 (1996-07-01), Kondo
patent: 5539711 (1996-07-01), Mitani

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