Inventor
YOSHIKAWA SHOZI
JP11 patents
Patents
11 patentsUS4734914AMar 29, 1988
Stabilized laser apparatus
OLYMPUS OPTICAL CO114 citations95
US4858219AAug 15, 1989
Optical information recording reproducing memory system with both power control and optical irradiation inhibiting circuit
OLYMPUS OPTICAL CO46 citations92
US4713819ADec 15, 1987
Semiconductor laser driver
OLYMPUS OPTICAL CO36 citations92
US4745610AMay 17, 1988
Semiconductor laser drive device with an abnormal voltage protection circuit
OLYMPUS OPTICAL CO24 citations81
US4745588AMay 17, 1988
Tracking control apparatus
OLYMPUS OPTICAL CO22 citations81
US4745609AMay 17, 1988
Stabilized laser device
OLYMPUS OPTICAL CO21 citations81
US4728188AMar 1, 1988
Light source degeradation detecting apparatus for laser device
OLYMPUS OPTICAL CO21 citations76
US4718068AJan 5, 1988
Stabilized laser device of optical information recording/reproduction apparatus
OLYMPUS OPTICAL CO12 citations73
US4520280AMay 28, 1985
Apparatus for detecting input signal
OLYMPUS OPTICAL CO14 citations73
US4748605AMay 31, 1988
Bias-magnetic-field generating apparatus in magneto-optical information writing and erasing system
OLYMPUS OPTICAL CO5 citations62
US4499572AFeb 12, 1985
Method for reading information or defect out of rotating disc
OLYMPUS OPTICAL CO6 citations62