Inventor
YAMAZAKI MASACHIKA
JP4 patents
Patents
4 patentsUS5258586ANov 2, 1993
Elevator control system with image pickups in hall waiting areas and elevator cars
HITACHI LTD88 citations94
US4989694AFeb 5, 1991
Elevator group supervisory system
HITACHI LTD56 citations94
US5182776AJan 26, 1993
Image processing apparatus having apparatus for correcting the image processing
HITACHI LTD52 citations91
US4872532AOct 10, 1989
Signal transmission method and system in elevator equipment
HITACHI LTD29 citations91