Title:
METHOD AND APPARATUS FOR READING AND WRITING A MULTILEVEL SIGNAL FROM AN OPTICAL DISC
Document Type and Number:
WIPO Patent Application WO2000049603
Kind Code:
A9
Abstract:
A system and method are disclosed for reading a multilevel signal from an optical disk (200). The method includes reading a raw analog data signal from a disk (200) using an optical head (204) and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal by a signal processor (214). Correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
Inventors:
WONG TERRY
ZINGMAN JONATHAN A
SPIELMAN STEVEN R
FAN JOHN L
LING YI
LO YUNG-CHEN
MCLAUGHLIN STEVE W
POWELSON JUDITH C
WARLAND DAVID K
MCPHETERS LAURA L
LEE DAVID C
MARTIN RICHARD L
ZINGMAN JONATHAN A
SPIELMAN STEVEN R
FAN JOHN L
LING YI
LO YUNG-CHEN
MCLAUGHLIN STEVE W
POWELSON JUDITH C
WARLAND DAVID K
MCPHETERS LAURA L
LEE DAVID C
MARTIN RICHARD L
Application Number:
PCT/US2000/003271
Publication Date:
September 27, 2001
Filing Date:
February 08, 2000
Export Citation:
Assignee:
CALIMETRICS INC (US)
International Classes:
G11B7/0045; G11B7/005; G11B7/007; G11B7/013; G11B20/10; G11B20/12; G11B20/14; G11B20/18; G11B27/19; H03M13/00; H03M13/23; G11B27/24; G11B27/30; (IPC1-7): G11B3/70; G11B5/09; G11B5/76; G11B7/00
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