Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Reexamination Certificate
2006-10-10
2006-10-10
Hindi, Nabil (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
C369S059220
Reexamination Certificate
active
07120104
ABSTRACT:
An equalizer and an equalizing method of optical recording/reproducing apparatus capable of enhancing equalizing performance and equalizing speed are disclosed. The equalizer includes a FF unit having a feedforward filter for removing pre-cursor from inter-symbol interference of input signal, a FB unit having a feedback filter for predicting post-cursor of the inter-symbol interference and outputting it, a first adder and a second adder for adding the signal from the FF unit and the signal from the FB unit, to remove the inter-symbol interference, a slicer for deciding the level of the signal from the first adder to be a predetermined level and feeding back the level-decided signal to the FB unit, and a signal detection unit for outputting the signal having the inter-symbol interference removed by the second adder as a predetermined signal using at least one of a trellis structure method and a tree structure method.
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Cho Eing-seob
Lee Jae-wook
Hindi Nabil
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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