Mastering device, disc manufacturing method, disc-shaped...

Details Mastering device, disc manufacturing method, disc-shaped... Mastering device, disc manufacturing method, disc-shaped...

2007-07-24

2007-07-24

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S059130

Reexamination Certificate

active

10504322

ABSTRACT:
Second digital information serving as copyright protection information can be stably and reliably read without any effect of a defect or pit missing on a disk-shaped recording medium. The second digital information is recorded onto a disk-shaped recording medium by wobbling a pit sequence recorded as a first signal. The second digital information is recorded so that a plurality of bits constituting the second digital information are allocated in a unit period of an identical sync signal contained in the first signal. During playback, the plurality of bits constituting the recorded second digital information are read a plurality of times every unit period of the sync signal, and information of the read bits is then integrated. Thus, information from a large number of wobbled pits across unit periods of a plurality of sync signals can be integrated to determine the bit values.

REFERENCES:
patent: 6219322 (2001-04-01), Kobayashi
patent: 7-272282 (1995-10-01), None
patent: 11-66739 (1999-03-01), None
patent: 2000-195049 (2000-07-01), None
patent: 2000-242929 (2000-09-01), None
patent: 2001-357533 (2001-12-01), None
patent: 2002-197671 (2002-07-01), None

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