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Title:
INFORMATION REPRODUCTION PROCESSING APPARATUS
Document Type and Number:
Japanese Patent JP2007164952
Kind Code:
A
Abstract:

To provide a data reproducing and clock reproducing circuit having a high phase-time resolution while using an operating clock of a comparatively low frequency by digitizing the circuitry such as an equalizer and a PLL.

The information reproduction processing apparatus comprises: a multi-layer clock generation means 8 for generating N clocks; a binarization means 6; a sampling means 10 for sampling a binary signal by each of the N multi-layer clocks; a serial/parallel conversion means 11 for outputting N sampling signals as N-bit data for each cycle T1; an equivalence processing means 5 for performing waveform equivalence processing; a parallel/serial conversion means 12 for converting the N-bit equivalent data into a one-bit serial equivalent signal; a digital PLL means 13 for outputting an N-bit reproduced clock data from the N-bit equivalent data; and a parallel/serial conversion means 14 for converting the N-bit reproduced clock data into a one-bit serial reproduced clock signal.


Inventors:
MICHIYOSHI HIROSHI
SHIGEMORI TOSHIHIRO
Application Number:
JP2005364121A
Publication Date:
June 28, 2007
Filing Date:
December 16, 2005
Export Citation:
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Assignee:
RICOH KK
International Classes:
G11B20/14; H03L7/06; H03L7/08; H03L7/087; H04L7/033
Domestic Patent References:
JP2001101799A2001-04-13
JP2002269925A2002-09-20
JP2003100032A2003-04-04
JP2006338726A2006-12-14
JP2006004465A2006-01-05
JP2007026596A2007-02-01
JP2001101799A2001-04-13
JP2002269925A2002-09-20
JP2003100032A2003-04-04
JP2006338726A2006-12-14
JP2006004465A2006-01-05
JP2007026596A2007-02-01