Hideshi Ishihara
69Patents
20h-index
68Co-inventors
91Inventor score
Filing activity: May 3, 1988 → Mar 21, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6101271A | Gradation correction method and device | Electricity | 225 | Expired |
| US6938162B1 | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system | Physics | 144 | Expired |
| US6573819B1 | Optical disc for high resolution and three-dimensional image recording, optical disc reproducing device, and optical disc recording device | Electricity | 135 | Expired |
| US6925250B1 | Optical disc for recording high resolution and normal image, optical disc player, optical disc recorder, and playback control information generator | Electricity | 66 | Expired |
| US5905845A | Method disk and an apparatus for system encoding of bitstreams including plural system streams to be seamlessly reproduced | Physics | 64 | Expired |
| US5347599A | Adaptive interpolation method and apparatus using correlation detection | Electricity | 47 | Expired |
| US5237625A | Image contour enhancing device | Electricity | 36 | Expired |
| US5661575A | Gradation correction method and device | Electricity | 33 | Expired |
| US6173113A | Machine readable information recording medium having audio gap information stored therein for indicating a start time and duration of an audio presentation discontinuous period | Physics | 32 | Expired |
| US6802074B1 | Recording apparatus, transmitting apparatus, and computer-readable recording medium | Electricity | 31 | Expired |
| US5296920A | Color gradation correction method and apparatus | Electricity | 31 | Expired |
| US6937553B1 | Recorder for recording copy of production on the basis of copy attribute embedded as electronic watermark in the production, reproducing device for reproducing recorded copy, recorded medium, recording method, and reproducing method | Electricity | 30 | Expired |
| US7484090B2 | Encryption apparatus, decryption apparatus, secret key generation apparatus, and copyright protection system | Electricity | 30 | Active |
| US7317868B2 | Optical disk for high resolution and three-dimensional video recording, optical disk reproduction apparatus, and optical disk recording apparatus | Electricity | 29 | Expired |
| US5644351A | Thermal gradation printing apparatus | Performing Operations; Transporting | 28 | Expired |
| US5390264A | Image processing method for correcting a target pixel using emphasizing and smoothing components | Physics | 28 | Expired |
| US5448379A | Method and apparatus for forming color images by converting a color signal to a further color density signal | Electricity | 26 | Expired |
| US5422738A | Color image forming method and an apparatus employed therefor, and a correction factor determining method | Electricity | 22 | Expired |
| US6549722B2 | Apparatus, method, and recording medium implementing audio gap information for an audio presentation discontinuous period | Physics | 21 | Expired |
| US4963927A | Electrophotographic recording apparatus having a developer resupply control function | Physics | 20 | Expired |
| US5513281A | Interpolation method and apparatus by correlation detection using fuzzy inference | Physics | 19 | Expired |
| US5067161A | Image recognition device | Physics | 19 | Expired |
| US7979915B2 | Recording device, replay device, integrated circuit, and control program | Physics | 18 | Active |
| US5058181A | Hardware and software image processing system | Physics | 18 | Expired |
| US7647646B2 | Information input/output system, key management device, and user device | Electricity | 17 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.