Haruo Ohta
29Patents
12h-index
24Co-inventors
81Inventor score
Filing activity: Oct 17, 1984 → Mar 1, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5278846A | Digital signal decoder | Electricity | 183 | Expired |
| US5265125A | Signal detection apparatus for detecting digital information from PCM signal | Electricity | 35 | Expired |
| US5633764A | Magnetic tape recording/reproducing apparatus | Electricity | 32 | Expired |
| US7433245B2 | Memory card able to guarantee a recoding rate and memory card system using the memory card | Physics | 24 | Active |
| US5166955A | Signal detection apparatus for detecting digital information from a PCM signal | Electricity | 23 | Expired |
| US6614841B1 | Signal processing apparatus | Electricity | 22 | Expired |
| US4825289A | Noise reduction apparatus for video signal | Electricity | 18 | Expired |
| US6560053B1 | Clock recovery apparatus | Electricity | 15 | Expired |
| US4905101A | Time base corrector | Electricity | 14 | Expired |
| US6724555B2 | Data detecting apparatus and method thereof | Physics | 13 | Expired |
| US4849826A | Digital non-linear pre-emphasis/de-emphasis apparatus for eliminating noise components from video signals in a video signal processing system | Electricity | 13 | Expired |
| US4827342A | Video signal processing apparatus for removing noise from reproduced signals | Electricity | 13 | Expired |
| US5535244A | Digital modulating/demodulating apparatus and a digital demodulating apparatus | Electricity | 10 | Expired |
| US4982191A | Clamping apparatus and gain control apparatus | Electricity | 10 | Expired |
| US6711228B1 | Multi-rate clock generator and multi-rate digital data reproducing device | Electricity | 10 | Expired |
| US5233479A | Apparatus for demodulating and decoding multi-level amplitude modulation signal conveying digital data | Physics | 9 | Expired |
| US5051614A | Dropout detecting apparatus | Physics | 8 | Expired |
| US7512816B2 | Recording apparatus receiving current supply from an accessing apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4994754A | Digital FM demodulating apparatus | Electricity | 7 | Expired |
| US5953482A | Magnetic recording/reproducing apparatus with the recording/reproducing heads preceding the erasing heads | Physics | 6 | Expired |
| US4686583A | Dropout compensating apparatus using a digital delay circuit | Electricity | 6 | Expired |
| US5402272A | Digital signal magnetic recording/reproducing apparatus using amplitude phase shift keying and frequency-multiplexing | Physics | 5 | Expired |
| US5255127A | Digital modulated signal demodulator/decoder apparatus | Electricity | 5 | Expired |
| US6747826B2 | Clock recovery apparatus | Electricity | 4 | Expired |
| US7525807B2 | Semiconductor memory device | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.