Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1997-05-06
1998-10-06
Edun, Muhammad N.
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369 58, 369 47, 3692753, 360 53, 375348, 375341, 375262, G11B 700
Patent
active
058188061
ABSTRACT:
A system and method are disclosed for compensating for intersymbol interference on an optical disc. The method includes measuring an intersymbol linear transfer function. The intersymbol linear transfer function substantially describes a linear portion of the effect of intersymbol interference on an optically detected read signal from an optical disc. The intersymbol linear transfer function is convolved with a write signal to produce a linearly transformed portion of the optically detected read signal. An inverse linear transfer function of the intersymbol linear transfer function is determined. The inverse linear transfer function has the property of canceling the effect of convolving the intersymbol linear transfer function with the write signal. The optically detected read signal is convolved with the inverse linear transfer function. Thus, the linear portion of the effect of intersymbol interference on an optically detected read signal from an optical disc is canceled by the convolution of the optically detected read signal with the inverse linear transfer function.
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Spielman Steven R.
Wong Terrence L.
Calimetrics, Inc.
Edun Muhammad N.
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