Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8949972 | Information recording device, recording medium, and information recording system | Takeshi Otsuka | 2015-02-03 |
| 7525807 | Semiconductor memory device | Takeshi Ohtsuka | 2009-04-28 |
| 7512816 | Recording apparatus receiving current supply from an accessing apparatus | Takeshi Ootsuka, Hideaki Yamashita | 2009-03-31 |
| 7433245 | Memory card able to guarantee a recoding rate and memory card system using the memory card | Takeshi Otsuka | 2008-10-07 |
| RE39029 | Magnetic recording/reproducing apparatus with the recording/reproducing heads preceding the erasing heads | Kouhei Baba, Hideaki Mukae, Jun Takeuchi, Haruo Isaka | 2006-03-21 |
| 6747826 | Clock recovery apparatus | Yoshikazu Katoh | 2004-06-08 |
| 6724555 | Data detecting apparatus and method thereof | — | 2004-04-20 |
| 6711228 | Multi-rate clock generator and multi-rate digital data reproducing device | Yoshikazu Kato | 2004-03-23 |
| 6614841 | Signal processing apparatus | — | 2003-09-02 |
| 6560053 | Clock recovery apparatus | Yoshikazu Katoh | 2003-05-06 |
| 5991108 | Recording and reproducing apparatus | — | 1999-11-23 |
| 5953482 | Magnetic recording/reproducing apparatus with the recording/reproducing heads preceding the erasing heads | Kouhei Suzuki, Hideaki Mukae, Jun Takeuchi, Haruo Isaka | 1999-09-14 |
| 5633764 | Magnetic tape recording/reproducing apparatus | — | 1997-05-27 |
| 5535244 | Digital modulating/demodulating apparatus and a digital demodulating apparatus | Etsuto Nakatsu, Hiroshi Higashitani | 1996-07-09 |
| 5402272 | Digital signal magnetic recording/reproducing apparatus using amplitude phase shift keying and frequency-multiplexing | Etsuto Nakatsu, Masaaki Kobayashi | 1995-03-28 |
| 5299003 | Signal processing apparatus for changing the frequency characteristics of an input signal | Atsuo Ochi, Masayuki Yoneyama, Yasuo Hamamoto, Akihiro Takeuchi, Masaaki Kobayashi | 1994-03-29 |
| 5278846 | Digital signal decoder | Mutsuyuki Okayama | 1994-01-11 |
| 5265125 | Signal detection apparatus for detecting digital information from PCM signal | — | 1993-11-23 |
| 5255127 | Digital modulated signal demodulator/decoder apparatus | Etsuto Nakatsu, Hiroaki Shimazaki, Masaaki Kobayashi | 1993-10-19 |
| 5233479 | Apparatus for demodulating and decoding multi-level amplitude modulation signal conveying digital data | Etsuto Nakatsu, Masaaki Kobayashi | 1993-08-03 |
| 5166955 | Signal detection apparatus for detecting digital information from a PCM signal | — | 1992-11-24 |
| 5051614 | Dropout detecting apparatus | — | 1991-09-24 |
| 4994754 | Digital FM demodulating apparatus | — | 1991-02-19 |
| 4982191 | Clamping apparatus and gain control apparatus | — | 1991-01-01 |
| 4905101 | Time base corrector | Tokikazu Matsumoto | 1990-02-27 |