Inventor
YANAGIDA TSUNEO
JP9 patents
Patents
9 patentsUS4837758AJun 6, 1989
Magneto-optical recording reproducing device having field applying means
OLYMPUS OPTICAL CO35 citations92
US4472748ASep 18, 1984
Method of processing information signal with respect to opto-magnetic record medium
OLYMPUS OPTICAL CO36 citations92
US5159584AOct 27, 1992
Bias-Magnetic field generating system of photo-magnetic recording device
OLYMPUS OPTICAL CO9 citations73
US5555232ASep 10, 1996
Optical head with built-in semiconductor laser, objective lens and 1/4 wavelength plate
OLYMPUS OPTICAL CO11 citations72
US5202877AApr 13, 1993
Apparatus for detecting unused sector on record medium
OLYMPUS OPTICAL CO7 citations72
USD288558SMar 3, 1987
Optical pickup for use in optical discs
OLYMPUS OPTICAL CO6 citations72
US5083303AJan 21, 1992
Sector mark detecting apparatus in optical disc apparatus
OLYMPUS OPTICAL CO13 citations68
US5249171ASep 28, 1993
Opto-magnetic pick-up device including phase difference correcting means
OLYMPUS OPTICAL CO4 citations62
US4757487AJul 12, 1988
Method and apparatus for detecting track crossings on an optical disc
OLYMPUS OPTICAL CO3 citations62