Toshihiko Numakura
11Patents
6h-index
12Co-inventors
59Inventor score
Filing activity: Jul 1, 1977 → Jun 2, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5243411A | Anti-piracy video tape system has anti-piracy components added to the luminance signal and the color difference signals | Electricity | 59 | Expired |
| US4780769A | Recording and reproducing apparatus for time compressed video signals wherein said signals are expanded and converted into two separate channels before recording | Electricity | 11 | Expired |
| US4193084A | Video recorder having means for maintaining constant the amplitude of the frequency-modulated signal | Electricity | 10 | Expired |
| US4208673A | Color recorder for reducing crosstalk | Electricity | 9 | Expired |
| US4220964A | Secam recording and reproducing system | Electricity | 7 | Expired |
| US4851928A | Apparatus for recording low and high bond components of a chrominance signal | Electricity | 6 | Expired |
| US4233621A | Method and apparatus for recording and reproducing a color-aligned line-sequential color video signal | Electricity | 6 | Expired |
| US4180833A | Apparatus and method for reproducing video signals | Electricity | 6 | Expired |
| US4186411A | Recording and playback modulation method and apparatus | Physics | 4 | Expired |
| US4175272A | Video signal processing circuitry for compensating different average levels | Electricity | 2 | Expired |
| US4268874A | Transducer deflection apparatus for use in a video signal reproducing device | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.