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AssigneeKoninklijke Philips Electronics N.V.
InventorsHendrikus Albertus Johanna Looijmans, Joris Huibert Joseph Geurts
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The invention discloses a method for reproducing from a multi-layer optical information carrier (1), e.g. dual layer media like a DVD or BD disc. Initially, light (5) is focused at a first information layer (L1), where the first layer has a range of parameter settings (SL1) for optimized reproducing of information in a specific optical drive. Secondly, reflected light (8) from the carrier is detected, and subsequently information showing the actual information layer (L1 or LO) the light (5) is focused on is provided. Due to an error the light may be focused on a “wrong”, second information layer (LO), where the second layer has a range of second layer parameter settings (SLO) for optimized reproducing of information in the specific optical drive. The invention provides an improved recovery chance by changing at least one first layer parameter setting to the corresponding second layer parameter setting prior to performing the refocusing to the intended layer (L1).
A method for reproducing and/or recording information from/on an optical information carrier (1) in an optical apparatus, the carrier (1) having a plurality of information layers (L1, L0), by radiating light (5) onto the optical information carrier (1), the method comprising the steps of:
An optical apparatus adapted for reproducing and/or recording information from/to an optical information carrier (1), the optical apparatus comprising:
Dependencies are inferred from the claim text.