Optical disc identification method

Details Optical disc identification method Optical disc identification method

2007-01-09

2007-01-09

Wellington, Andrea (Department: 2627)

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10605120

ABSTRACT:
A method used in an optical disc reproducing system for identifying the type of an optical disc, wherein the optical disc reproducing system comprises a pickup; the pickup comprising a first light source and a second light source. The method comprises: (a) measuring a first time needed for the focus of the first light source to move from a plastic layer to a reflection layer of the optical disc; (b) measuring the characteristics of a focus error signal while the focus of the first light source is moving in the reflection layer of the optical disc; (c) measuring the characteristics of the focus error signal while the focus of the second light source is moving in the reflection layer of the optical disc; and (d) identifying the type of the optical disc according to the first time and the results measured in steps (b) and (c).

REFERENCES:
patent: 5671203 (1997-09-01), Ra
patent: 6243341 (2001-06-01), Hasimoto
patent: 6278672 (2001-08-01), Kobayashi
patent: 6285635 (2001-09-01), Watanabe et al.
patent: 6493304 (2002-12-01), Watanabe et al.
patent: 6501712 (2002-12-01), Masuda et al.
patent: 6822936 (2004-11-01), Ono et al.
patent: 6868052 (2005-03-01), Konno et al.
patent: 6970408 (2005-11-01), Ono
patent: 6975574 (2005-12-01), Yanagawa et al.
patent: P2000-311427 (2000-11-01), None

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