Daisuke Hata
21Patents
10h-index
7Co-inventors
64Inventor score
Filing activity: Nov 7, 1986 → Sep 22, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6700614B1 | Autofocus apparatus | Electricity | 55 | Expired |
| US6603508B1 | Method, system, and computer readable medium for controlling a digital camera to avoid blurring of a photograph | Electricity | 52 | Expired |
| US6430368B1 | Autofocus apparatus | Electricity | 33 | Expired |
| US4881799A | Varifocal lens device | Physics | 28 | Expired |
| US6100928A | Digital camera with variable gain to offset exposure error | Electricity | 27 | Expired |
| US4733264A | Charge-coupled device for automatic focusing and camera shake detector using such charge-coupled device | Physics | 19 | Expired |
| US4899190A | Zooming optical system control device | Physics | 16 | Expired |
| US4763154A | Focus detecting device and image signal amplifier circuit therefor | Physics | 16 | Expired |
| US5028773A | Lens controller includes a zooming optical system and a zooming speed control device | Physics | 13 | Expired |
| US5231441A | Focusing device for driving focusing lens group according to a position of zoom lens group | Physics | 12 | Expired |
| US6657668B1 | Method, system, and computer readable medium for controlling automatic focusing of a digital camera | Electricity | 10 | Expired |
| US5196879A | Lens controller | Physics | 8 | Expired |
| US4994752A | Position detecting potentiometer for a moving body | Physics | 7 | Expired |
| US4777505A | Automatic focusing control system | Physics | 6 | Expired |
| US4831405A | Auto-focus arithmetic device | Physics | 6 | Expired |
| US6721006B1 | Digital camera and control method for the same | Electricity | 4 | Expired |
| US4818921A | Apparatus for controlling a motor in a camera | Physics | 4 | Expired |
| US6825883B1 | Auto-focus apparatus based on pixel resolution and control method for the same | Electricity | 3 | Expired |
| US5274223A | Vari-focal lens control system with lens driving and magnification lens driving means | Physics | 3 | Expired |
| US7295243B2 | Autofocus apparatus having a flash synchronized to an autofocus sampling time | Electricity | 2 | Expired |
| US5307110A | Pulse-controlled camera, method for setting control reference position thereof, and method for adjusting mechanical errors in production thereof | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.