Inventor
O'HARA SHUNJI
JP9 patents
Patents
9 patentsUS5418774AMay 23, 1995
Optical head system and its optical disc
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations92
US4564931AJan 14, 1986
Optical recording and reproducing head
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD34 citations92
US5351225ASep 27, 1994
Optical recording and reproducing apparatus having a plurality of light spots
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations73
US5161243ANov 3, 1992
Tracking system for an optical recording/reproducing apparatus having a plurality of light spots
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations73
US5467330ANov 14, 1995
Recording method and recording and reproducing apparatus for optical disk
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations72
US5202873AApr 13, 1993
Agc circuit for optical disk data reproducing apparatus using alpc period detector
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations62
US5615188AMar 25, 1997
Recording method and recording and reproducing apparatus for optical disk
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations61
US5331620AJul 19, 1994
Recording method and recording apparatus for optical disk
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations61
US5559782ASep 24, 1996
Recording method and recording and reproducing apparatus for optical disk
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations51