Inventor
SAKURADA NOBUAKI
JP68 patents
Patents
50 patentsUS4047187ASep 6, 1977
System for exposure measurement and/or focus detection by means of image senser
CANON KK254 citations99
US4959659ASep 25, 1990
Color picture forming apparatus and method
CANON KK69 citations96
US4931864AJun 5, 1990
Image forming apparatus which performs gamma correction on the basis of a cumulative frequency distribution produced from a histogram of image data representing a selected area of an image
CANON KK75 citations96
US4860034AAug 22, 1989
Ink jet recording apparatus with ambient temperature detecting means for providing a signal to drive control means responsive to a recording-density data signal
CANON KK63 citations96
US4714935ADec 22, 1987
Ink-jet head driving circuit
CANON KK60 citations96
US4682216AJul 21, 1987
Color image picture forming process and apparatus which improves the quality of the black portions of the picture
CANON KK95 citations96
US4672432AJun 9, 1987
Method for recording a color image using dots of colorants of different densities
CANON KK116 citations96
US4667228AMay 19, 1987
Image signal processing apparatus
CANON KK60 citations96
US4635078AJan 6, 1987
Intermediate gradient image producing method
CANON KK102 citations96
US4631578ADec 23, 1986
Method of and apparatus for forming a color picture using a plurality of color correction processings
CANON KK58 citations96
US5172142ADec 15, 1992
Ink jet recording apparatus with driving means providing a driving signal having upper and lower limits in response to an input signal
CANON KK36 citations93
US4772911ASep 20, 1988
Image formation apparatus
CANON KK26 citations93
US4682186AJul 21, 1987
Method for forming a color image
CANON KK31 citations93
US4658284AApr 14, 1987
Image forming apparatus
CANON KK29 citations93
US4604654AAug 5, 1986
Image forming method and apparatus
CANON KK49 citations93
US4560997ADec 24, 1985
Method and apparatus for forming a pattern
CANON KK46 citations93
US4118713AOct 3, 1978
Totally opened F. value information input system of lens for a camera with interchangeable lenses
CANON KK49 citations93
US4449805AMay 22, 1984
Data registration device
CANON KK29 citations92
US4713701ADec 15, 1987
Picture producing apparatus using multiple dot forming units and recording materials of different concentrations
CANON KK22 citations82
US4713746ADec 15, 1987
Method for forming pictures
CANON KK22 citations82
US4664496AMay 12, 1987
Camera system
CANON KK14 citations82
US4512656AApr 23, 1985
Camera system
CANON KK15 citations82
US4384771AMay 24, 1983
Data registration device
CANON KK21 citations82
US4149795AApr 17, 1979
Digital information transmitting and displaying system for a photographic camera
CANON KK24 citations82
US4304472ADec 8, 1981
Camera system
CANON KK28 citations80
US4727436AFeb 23, 1988
Method and apparatus for producing a picture
CANON KK18 citations74
US4658300AApr 14, 1987
System and method for processing image signals
CANON KK15 citations74
US4639747AJan 27, 1987
Recording head drive control apparatus
CANON KK12 citations74
US4351595ASep 28, 1982
Motor drive camera
CANON KK10 citations74
US4247189AJan 27, 1981
Camera with built-in electric wind-up mechanism
CANON KK11 citations74
US4175842ANov 27, 1979
Exposure control system for a camera
CANON KK8 citations74
US4167332ASep 11, 1979
Indication and photometric unit
CANON KK7 citations74
US4163935AAug 7, 1979
Apparatus for checking a battery voltage
CANON KK8 citations74
US4134654AJan 16, 1979
Printed circuit unit for a camera
CANON KK10 citations74
US4134660AJan 16, 1979
Self timer of camera
CANON KK14 citations74
US4118716AOct 3, 1978
Photographic mode selection device for a camera
CANON KK14 citations74
US4106033AAug 8, 1978
System for indicating photographing conditions
CANON KK11 citations74
US4103308AJul 25, 1978
Digital information input method
CANON KK7 citations74
US4081813AMar 28, 1978
Photographic information setting apparatus for camera
CANON KK12 citations74
US4079387AMar 14, 1978
Counter circuit for a camera
CANON KK11 citations74
US4079386AMar 14, 1978
Camera with digital control device
CANON KK12 citations74
US4037233AJul 19, 1977
Exposure control device for a camera
CANON KK9 citations74
US4034383AJul 5, 1977
Exposure control device
CANON KK12 citations74
US4029421AJun 14, 1977
Digital exposure meter
CANON KK7 citations74
US4432628AFeb 21, 1984
Film transportation display device
CANON KK14 citations69
US5905511AMay 18, 1999
Ink jet recording apparatus for accurately recording regardless of ambient temperature
CANON KK6 citations63
US4706132ANov 10, 1987
Video signal processing system
CANON KK4 citations63
US4383749AMay 17, 1983
Automatic exposure control system
CANON KK6 citations63
US4364647ADec 21, 1982
Control device for a camera
CANON KK5 citations63
US4291960ASep 29, 1981
Display device
CANON KK5 citations63
Showing the top 50 of 68 patents by PatentIndex Score.