Morito Morishima
59Patents
8h-index
20Co-inventors
78Inventor score
Filing activity: Sep 7, 1989 → Apr 11, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7933418B2 | Sound reproducing apparatus and method of identifying positions of speakers | Electricity | 164 | Active |
| US6912188B2 | Optical disk recording method | Physics | 32 | Expired |
| US7082094B2 | Optical recording apparatus with drawing capability of visible image on disk face | Physics | 17 | Expired |
| US7920082B2 | D/A converter circuit and digital input class-D amplifier | Electricity | 12 | Active |
| US6909678B2 | Method of consecutive writing on recordable disc | Physics | 12 | Expired |
| US7679435B2 | Digital input class-D amplifier | Electricity | 10 | Active |
| US5195068A | Track-number computing equipment for CLV disk drives | Physics | 8 | Expired |
| US7656946B2 | Pulse width modulation amplifier | Electricity | 8 | Active |
| US6502182B1 | Digital signal processing device | Physics | 8 | Expired |
| US8044719B2 | Class D amplifier circuit | Electricity | 7 | Active |
| US7129968B2 | Image forming apparatus capable of forming image on optical disk, and image forming method | Physics | 7 | Expired |
| US5521952A | Pulse counter circuit and pulse signal changeover circuit therefor | Electricity | 6 | Expired |
| US7050365B2 | Optical disk information recording/reproducing apparatus and method with laser-beam focus control | Physics | 5 | Expired |
| US8515090B2 | Ambient noise removal device | Electricity | 5 | Active |
| US7558169B2 | Discs, image forming methods and optical disc apparatuses for forming a multi-color image in a color forming layer on an optical disk | Physics | 5 | Expired |
| US5590112A | Track jump controller for correcting information read errors | Physics | 5 | Expired |
| US7317349B2 | Class-D amplifier | Electricity | 4 | Expired |
| US7652603B2 | ΔΣ-type AD converter, class-D amplifier, and DC-DC converter | Electricity | 4 | Active |
| US7009924B2 | Circuit for measuring parameter of time-base error of pulse train, and optical disk recording apparatus | Physics | 4 | Expired |
| US6920095B2 | Optical disk recording method and apparatus | Physics | 3 | Expired |
| US7646691B2 | Optical disk face discriminating system and optical disk drive | Physics | 3 | Expired |
| US9978358B2 | Sound generator device and sound generation method | Human Necessities | 3 | Active |
| US6005427A | Digital PLL circuit | Electricity | 3 | Expired |
| US7586370B2 | Class D amplifier | Electricity | 2 | Active |
| US5640376A | Track kick device in a disc recording and reproducing apparatus | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.