Inventor
MURAMATSU YUKO
JP6 patents
Patents
6 patentsUS6801488B2Oct 5, 2004
Pre-pit detecting apparatus for optical recording medium
PIONEER CORP24 citations92
US7099255B2Aug 29, 2006
Error counting apparatus for counting an error number of a pre-pit signal in an optical disc and method therefor
PIONEER CORP3 citations62
US6956802B2Oct 18, 2005
Aperture ratio measuring apparatus for optical recording medium with pre-pits
PIONEER CORP3 citations62
US6954418B2Oct 11, 2005
Apparatus for adjusting signal levels derived from an optical disc to become equal to a reference level determined from at least one of the signal levels of the signals and for synthesizing the signals
PIONEER CORP2 citations62
US6928041B2Aug 9, 2005
Pre-pit detecting apparatus for optical recording medium
PIONEER CORP3 citations62
US6865143B2Mar 8, 2005
Optical device including a calibrating unit for calibrating a level adjusting unit
PIONEER CORP2 citations62