Inventor
OOHARA SHUNJI
JP4 patents
Patents
4 patentsUS5508995AApr 16, 1996
Optical disk capable of recording information on both groove and land tracks
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD225 citations98
US5774439AJun 30, 1998
Optical-disk recording and reproducing apparatus and optical disk for recording information on lands and grooves
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations72
US5526330AJun 11, 1996
Optical head assembly for optical information player
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations72
US5734633AMar 31, 1998
Optical-disk recording and reproducing apparatus and method using an optical disk for recording information on lands and grooves
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations61