Inventor · Osaka, JP

Toshihiko Karasaki

60Patents
19h-index
34Co-inventors
80Inventor score

Filing activity: Apr 6, 1982 → Nov 24, 1998

Most-cited inventions

PatentTitleAreaCited byStatus
US5023646A Automatic focus detection system Physics 251 Expired
US4835615A Image sensor with improved response characteristics Electricity 157 Expired
US5585926A Document reading apparatus capable of rectifying a picked up image data of documents Electricity 50 Expired
US5084611A Document reading apparatus for detection of curvatures in documents Electricity 48 Expired
US4768052A Focus detecting device Physics 47 Expired
US4831403A Automatic focus detection system Physics 32 Expired
US6260000A Three-dimensional shape data processing apparatus Physics 31 Expired
US6449004B1 Electronic camera with oblique view correction Electricity 27 Expired
US4792820A Camera with automatic focus and exposure control means Physics 25 Expired
US4734571A Focus condition detecting device having correlation calculation means and means for determining the range of shifts of image signals Physics 25 Expired
US5218395A Camera with a multi-zone focus detecting device Physics 25 Expired
US4851657A Focus condition detecting device using weighted center or contrast evaluation Physics 24 Expired
US4910548A Camera with a multi-zone focus detecting device Physics 24 Expired
US4908649A Automatic focus detection device for use in a camera Physics 23 Expired
US4716434A Focus condition detecting device Physics 23 Expired
US4818865A Focus detecting system for camera utilizing correction data on the aberration of the photographic lens Physics 22 Expired
US4882601A Camera with an automatic focusing device Physics 21 Expired
US4903065A Focus condition detecting device Physics 20 Expired
US5068737A Image sensor having multiple pairs of array sensors Electricity 19 Expired
US5194729A Document reading apparatus with area recognizing sensor and obstacle detection Electricity 18 Expired
US5023649A Exposure controlling apparatus of a camera having a plurality of areas for measuring brightness Physics 17 Expired
US4878079A Focus detecting device Physics 17 Expired
US4857720A Focus detecting system using multiple portions of the image to be focussed Physics 17 Expired
US5214464A Camera system Physics 17 Expired
US4949116A Focus detection apparatus of camera Physics 16 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.