Youji Semba
13Patents
9h-index
13Co-inventors
69Inventor score
Filing activity: May 14, 1992 → Dec 26, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5229756A | Image control apparatus | Human Necessities | 423 | Expired |
| US5542000A | Karaoke apparatus having automatic effector control | Physics | 75 | Expired |
| US5974387A | Audio recompression from higher rates for karaoke, video games, and other applications | Physics | 69 | Expired |
| US5654516A | Karaoke system having a playback source with pre-stored data and a music synthesizing source with rewriteable data | Physics | 51 | Expired |
| US5824934A | Karaoke system including host apparatus that downloads information file based on list of necessary information files | Physics | 36 | Expired |
| US5810603A | Karaoke network system with broadcasting of background pictures | Physics | 33 | Expired |
| US5410097A | Karaoke apparatus with skip and repeat operation of orchestra accompaniment | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5890910A | Method of managing information files in a communication karaoke apparatus and a communication karaoke apparatus | Physics | 21 | Expired |
| US5931680A | Score information display apparatus | Physics | 18 | Expired |
| US5929359A | Karaoke apparatus with concurrent start of audio and video upon request | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8064614B2 | Audio signal delivery management system, audio signal acquiring and transmitting apparatus, audio signal identifying and outputting apparatus, and audio signal delivering apparatus | Electricity | 2 | Active |
| US5997308A | Apparatus for displaying words in a karaoke system | Physics | 0 | Expired |
| US10028015B2 | Signal processing apparatus and signal processing method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.