Inventor
OHSHIMA KEN
JP17 patents
⚠️ This page may combine multiple inventors who share the name “OHSHIMA KEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OLYMPUS OPTICAL CO
15 patentsUS4710908ADec 1, 1987
Servo apparatus for compensating for warp and deflection deviations on optical discs
OLYMPUS OPTICAL CO61 citations96
US4683560AJul 28, 1987
Microprocessor controlled focussing servo acquisition
OLYMPUS OPTICAL CO34 citations92
US4611317ASep 9, 1986
Optical disk apparatus
OLYMPUS OPTICAL CO44 citations92
US4508450AApr 2, 1985
System for checking defects on a flat surface of an object
OLYMPUS OPTICAL CO55 citations92
US4505585AMar 19, 1985
System for detecting defects on an optical surface
OLYMPUS OPTICAL CO55 citations92
US4372504AFeb 8, 1983
Magnetic record tape protective device for a tape cassette
OLYMPUS OPTICAL CO24 citations82
US4499514AFeb 12, 1985
Disc drive apparatus
OLYMPUS OPTICAL CO9 citations74
US4495407AJan 22, 1985
System for focusing an optical head onto a flat surface
OLYMPUS OPTICAL CO12 citations74
US4785439ANov 15, 1988
Optical memory accessing and tracking apparatus with pickup and lens servoing during tracking
OLYMPUS OPTICAL CO14 citations73
US4644514AFeb 17, 1987
Head drive control apparatus
OLYMPUS OPTICAL CO9 citations73
US4611316ASep 9, 1986
Actuator operating center detecting circuit and optical disk apparatus with the detecting circuit
OLYMPUS OPTICAL CO9 citations73
US4718051AJan 5, 1988
Optical beam tracking system for use in optical information recording and/or reproducing apparatus
OLYMPUS OPTICAL CO12 citations68
US4674071AJun 16, 1987
Data recording area signal generating method and apparatus
OLYMPUS OPTICAL CO11 citations66
US4355750AOct 26, 1982
Double-capstan tape driving device
OLYMPUS OPTICAL CO4 citations63
US4352473AOct 5, 1982
Tape cassette
OLYMPUS OPTICAL CO6 citations63