Inventor
HATA DAISUKE
JP21 patents
Patents
21 patentsUS6700614B1Mar 2, 2004
Autofocus apparatus
RICOH KK97 citations98
US6603508B1Aug 5, 2003
Method, system, and computer readable medium for controlling a digital camera to avoid blurring of a photograph
RICOH KK78 citations98
US6430368B1Aug 6, 2002
Autofocus apparatus
RICOH KK69 citations96
US6100928AAug 8, 2000
Digital camera with variable gain to offset exposure error
RICOH KK45 citations92
US4899190AFeb 6, 1990
Zooming optical system control device
RICOH KK24 citations92
US4881799ANov 21, 1989
Varifocal lens device
RICOH KK47 citations92
US4733264AMar 22, 1988
Charge-coupled device for automatic focusing and camera shake detector using such charge-coupled device
RICOH KK25 citations92
US6657668B1Dec 2, 2003
Method, system, and computer readable medium for controlling automatic focusing of a digital camera
RICOH KK19 citations84
US4763154AAug 9, 1988
Focus detecting device and image signal amplifier circuit therefor
RICOH KK21 citations82
US6825883B1Nov 30, 2004
Auto-focus apparatus based on pixel resolution and control method for the same
RICOH KK9 citations74
US6721006B1Apr 13, 2004
Digital camera and control method for the same
RICOH KK9 citations74
US5231441AJul 27, 1993
Focusing device for driving focusing lens group according to a position of zoom lens group
RICOH KK17 citations74
US5196879AMar 23, 1993
Lens controller
RICOH KK13 citations74
US5028773AJul 2, 1991
Lens controller includes a zooming optical system and a zooming speed control device
RICOH KK19 citations74
US4994752AFeb 19, 1991
Position detecting potentiometer for a moving body
RICOH KK10 citations74
US4831405AMay 16, 1989
Auto-focus arithmetic device
RICOH KK7 citations73
US4818921AApr 4, 1989
Apparatus for controlling a motor in a camera
RICOH KK7 citations73
US4777505AOct 11, 1988
Automatic focusing control system
RICOH KK12 citations73
US7295243B2Nov 13, 2007
Autofocus apparatus having a flash synchronized to an autofocus sampling time
RICOH KK4 citations63
US5274223ADec 28, 1993
Vari-focal lens control system with lens driving and magnification lens driving means
RICOH KK4 citations63
US5307110AApr 26, 1994
Pulse-controlled camera, method for setting control reference position thereof, and method for adjusting mechanical errors in production thereof
RICOH KK2 citations61