Katsumi Karasawa
26Patents
7h-index
17Co-inventors
66Inventor score
Filing activity: Jul 10, 1990 → Apr 27, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5436917A | Data processing apparatus having error detection/correction codes | Electricity | 58 | Expired |
| US5546409A | Error correction encoding and decoding system | Electricity | 40 | Expired |
| US6052814A | Coding/decoding apparatus | Electricity | 29 | Expired |
| US6333950A | Encoding apparatus and method and computer readable recording medium in which encoding program has been recorded | Electricity | 26 | Expired |
| US7268818B2 | Optical apparatus with memories storing a default setting data and a user setting data | Electricity | 16 | Expired |
| US5784112A | Encoding apparatus | Electricity | 12 | Expired |
| US7768573B2 | Optical apparatus and image-taking apparatus | Electricity | 11 | Active |
| US7215671B1 | Information processing apparatus and method | Electricity | 6 | Expired |
| US5561529A | Image signal reproducing apparatus | Electricity | 6 | Expired |
| US6718122B1 | Image processing apparatus | Electricity | 5 | Expired |
| US5483389A | Reproducing apparatus for temporarily writing reproducing data into memory | Electricity | 5 | Expired |
| US5200961A | Error detection and/or correction device | Electricity | 3 | Expired |
| US5930453A | Image processing apparatus with two types of data format | Electricity | 3 | Expired |
| US8000591B2 | Automatic focusing apparatus | Electricity | 3 | Active |
| US9025075B2 | Focus detecting apparatus, lens apparatus including the same, image pickup apparatus, and method of detecting defocus amount | Electricity | 2 | Active |
| US8208058B2 | Automatic focusing apparatus | Electricity | 2 | Active |
| US8848095B2 | Focus detector, and lens apparatus and image pickup apparatus including the same | Physics | 2 | Active |
| US6301390A | Encoding image data in blocks read out in a predetermined order | Electricity | 2 | Expired |
| US7755695B2 | Camera system and lens apparatus | Electricity | 1 | Active |
| US6263107A | Image processing apparatus | Electricity | 1 | Expired |
| US7884878B2 | Lens apparatus, imaging apparatus, and automatic focusing control method | Electricity | 1 | Active |
| US6661813B2 | Multiplexing apparatus and method and storage medium | Electricity | 1 | Expired |
| US9444993B2 | Focus detecting apparatus, lens apparatus including the same, image pickup apparatus, and method of detecting defocus amount | Electricity | 0 | Active |
| US8687284B2 | Lens apparatus | Electricity | 0 | Active |
| US9154689B2 | Focus detector, and lens apparatus and image pickup apparatus including the same | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.