Inventor
NAGATA SHIZUO
JP8 patents
⚠️ This page may combine multiple inventors who share the name “NAGATA SHIZUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKI ELECTRIC IND CO LTD
6 patentsUS5481526AJan 2, 1996
Tracking adjustment using the sum of the maximum and minimum tracking error signals or the mean value of the sum
OKI ELECTRIC IND CO LTD24 citations90
US5351224ASep 27, 1994
Adjustment of tracking servo and focusing servo in optical data recording/reproducing apparatus
OKI ELECTRIC IND CO LTD36 citations90
US5097456AMar 17, 1992
Optical head
OKI ELECTRIC IND CO LTD13 citations73
US5195074AMar 16, 1993
Rotatable read/write optical head apparatus
OKI ELECTRIC IND CO LTD15 citations70
US4813007AMar 14, 1989
External magnetic field generating device
OKI ELECTRIC IND CO LTD4 citations62
US5231618AJul 27, 1993
Optical disc system
OKI ELECTRIC IND CO LTD4 citations59