Inventor
YOSHITOSHI YOU
JP8 patents
Patents
8 patentsUS4731777AMar 15, 1988
Optical disk player
SONY CORP55 citations93
US4823331AApr 18, 1989
Focusing detection apparatus
SONY CORP24 citations92
US4794588ADec 27, 1988
Optical disk player
SONY CORP43 citations91
US4897828AJan 30, 1990
Optical pickup device
SONY CORP10 citations73
US4893296AJan 9, 1990
Optical pickup device
SONY CORP15 citations73
US4873429AOct 10, 1989
Optical pick-up head without pick-up of stray light
SONY CORP18 citations73
US4772784ASep 20, 1988
Semiconductor laser apparatus for optical head
SONY CORP13 citations73
US4687296AAug 18, 1987
Optical pickup
SONY CORP18 citations72