Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel
Reexamination Certificate
2007-03-20
2007-03-20
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Control of information signal processing channel
C369S059210
Reexamination Certificate
active
11038315
ABSTRACT:
It is an object of the present invention to provide a phase difference correction apparatus and a data reproduction apparatus including a data header detection apparatus that can synchronize the phase between a clock for reproducing data and an optimum sampling point of a reproduction signal with high accuracy and thus precisely detect a header of reproduced data even in a case where the S/N ratio of a signal is low. In order to achieve the object, a data reproduction apparatus for sampling a reproduction signal reproduced from an information medium with a predetermined sample clock including an A/D converter apparatus for sampling the reproduction signal with the sample clock, a phase difference detection part for detecting a phase difference between an optimum sampling point of a sample signal sampled by the A/D converter part, and a phase difference correction apparatus including an optimum phase difference correction part for correcting a phase of a sampling point of the sample signal to an optimum phase according to the phase difference detected by the phase difference detection part so that the sample signal becomes a signal sampled at the optimum sampling point is provided.
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Electronic Translation of JP 2002-109836.
Chow Lixi
Fujitsu Limited
Young Wayne
LandOfFree
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