Burst cutting area extraction method and device

Details Burst cutting area extraction method and device Burst cutting area extraction method and device

2005-09-27

2005-09-27

Young, W. R. (Department: 2652)

Dynamic information storage or retrieval

Control structure on storage medium sensed by other than...

C369S047280, C369S047350, C369S053340

Reexamination Certificate

active

06950379

ABSTRACT:
A method for extracting information in a data signal stored on an optical disc. The information is stored in a plurality of channel bits. The method includes initializing a recovery period of a recovery clock to a predetermined value expressed in cycles of a first clock; sampling the data signal with the first clock; obtaining a leading edge time period expressed in cycles of the first clock of a pattern of bits from the sampled data in which at least a first bit has a first binary value, followed by a plurality of bits having a second binary value, and ending with a last bit having the first binary value, wherein the first and second binary values are not equal; updating the recovery period of the recovery clock to be equal to a new maximum period that is the leading edge time period divided by a division factor; extracting the information in the data signal based on the newest recovery period of the recovery clock; and detecting a predetermined code in the data signal.

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