Inventor
ICHINO KAZUO
10 patents
⚠️ This page may combine multiple inventors who share the name “ICHINO KAZUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
9 patentsUS4866688ASep 12, 1989
Composite tracking servo system for optical disc apparatus with track offset correction
HITACHI LTD111 citations96
US4748609AMay 31, 1988
Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
HITACHI LTD119 citations96
US4707816ANov 17, 1987
Method and apparatus for composite wobbled and push-pull tracking servo system
HITACHI LTD98 citations96
US4005396AJan 25, 1977
Digital displacement sensor with zigzag coils
HITACHI LTD68 citations93
US4748611AMay 31, 1988
Information recording medium and method for reproducing the same
HITACHI LTD29 citations89
US4031496AJun 21, 1977
Variable inductor
HITACHI LTD30 citations81
US4286154AAug 25, 1981
Method of detecting a mark by an electron beam and an apparatus therefor
HITACHI LTD10 citations72
US4132939AJan 2, 1979
Driving signal control circuit
HITACHI LTD7 citations72
US4297676AOct 27, 1981
Mark signal amplifier
HITACHI LTD17 citations69