Inventor
ISHIDA TOMOYUKI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “ISHIDA TOMOYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
3 patentsUS5541899AJul 30, 1996
Optical pickup device with movable objective lens and stationary focusing and tracking coils
SONY CORP31 citations92
US4709139ANov 24, 1987
Coma correction in optical head with astigmatism for focusing error detection
SONY CORP22 citations82
US5144607ASep 1, 1992
Objective lens driving device
SONY CORP20 citations81
ISEKI AGRICULT MACH
3 patentsHITACHI LTD
2 patentsUS6449608B1Sep 10, 2002
Video searching method and apparatus, video information producing method, and storage medium for storing processing program thereof
HITACHI LTD130 citations99
US6584463B2Jun 24, 2003
Video searching method, apparatus, and program product, producing a group image file from images extracted at predetermined intervals
HITACHI LTD80 citations98