Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7324740 | AV data recording apparatus and method, and disk recorded by the same | Tadashi Nakamura, Masanori Itoh, Yasumori Hino | 2008-01-29 |
| 7305175 | AV data recording apparatus and method, and disk recorded by the same | Tadashi Nakamura, Masanori Itoh, Yasumori Hino | 2007-12-04 |
| 7292781 | AV data recording device and method, disk recorded by the AV data recording device and method, AV data reproducing device and method therefor | Masanori Ito, Makoto Mitsuda, Tadashi Nakamura, Yasumori Hino | 2007-11-06 |
| 7260317 | AV data recording apparatus and method, and disk recorded by the same | Tadashi Nakamura, Masanori Itoh, Yasumori Hino | 2007-08-21 |
| 7218844 | AV data recording apparatus and method, and disk recorded by the same | Tadashi Nakamura, Masanori Itoh, Yasumori Hino | 2007-05-15 |
| 7136884 | File managing method and data recorder using the same, data reproducing apparatus, data recording/reproducing apparatus, and disk recorded by the file managing method | Makoto Mitsuda, Masanori Ito, Tadashi Nakamura, Yasumori Hino | 2006-11-14 |
| 7123264 | Moving image management apparatus and method | Hiroshi Tojo, Hidetomo Sohma, Tadashi Nakamura, Masanori Ito | 2006-10-17 |
| 6873789 | AV data recording apparatus and method, and disk recorded by the same | Tadashi Nakamura, Masanori Itoh, Yasumori Hino | 2005-03-29 |
| 6424482 | System for recording and reproducing data having scheme for minimizing variation in record track width when recording at different data rates | Yoshifumi Yanagawa, Tadashi Kunihira, Masahiro Motosugi, Akihiro Takeuchi, Masaaki Kobayashi +2 more | 2002-07-23 |
| 6014278 | System for recording and reproducing data having scheme for minimizing variation in record track width when recording at different data rates | Katsumi Gotoh, Kenji Matsuura | 2000-01-11 |
| 5754356 | Tracking error detector with comparison of amplitude detected pilot signals leaking in from tracks adjacent to the target track | Kenichi Honjo, Toshihiko Maruoka, Haruo Isaka, Makoto Gotou, Kei Ichikawa +1 more | 1998-05-19 |
| 5587848 | Digital signal magnetic recording and reproducing apparatus for both metal evaporation tapes and metal powder tapes | Akio Kuroe | 1996-12-24 |
| 5490181 | Timing recovering apparatus having window periods determined by period of clock signal | Kiyokazu Hashimoto, Yoshio Higashida, Koichi Hayashi | 1996-02-06 |
| 5361043 | Delay circuit for changeably delaying an analog signal | Kouiti Hayashi, Yoshio Higashida, Kiyokazu Hashimoto | 1994-11-01 |
| 5321557 | Magnetic recording and reproducing apparatus having multiple magnetic heads | Takeshi Inoue, Hiroshi Okamoto, Masaru Higashionji, Tetsuya Mizushima, Tatsushi Bannai +1 more | 1994-06-14 |
| 5313346 | Tracking error detection system having at least two magnetic heads with opposite azimuths and circuitry for detecting tracking error by determining a phase difference of output signals from all circuits based on signals produced by the magnetic heads | Tetsuya Mizushima, Hiroshi Okamoto, Souichiro Fujioka | 1994-05-17 |
| 5258879 | Tracking error detection circuit of magnetic recording and reproduction apparatus for determining tracking error based on pilot signals recorded on a recording meedium | Kiyokazu Hashimoto, Makoto Gotou, Haruo Isaka, Kei Ichikawa, Kenichi Honjo +2 more | 1993-11-02 |
| 5130862 | Coding apparatus for converting digital signals into ternary signals whose DC component is equal to zero | Masaaki Kobayashi, Yoshitomi Nagaoka, Toyohiko Matsuda | 1992-07-14 |
| 5124861 | Digital signal magnetic recording and playback apparatus employing quadrature amplitude modulation | Toyohiko Matsuta, Masaaki Kobayashi, Etsuto Nakatsu, Hiroaki Shimazaki | 1992-06-23 |
| 5119243 | Digital signal magnetic recording/reproducing apparatus | Hiroaki Shimazaki, Toyohiko Matsuta, Etsuto Nakatsu, Masaaki Kobayashi | 1992-06-02 |
| 5095392 | Digital signal magnetic recording/reproducing apparatus using multi-level QAM modulation and maximum likelihood decoding | Hiroaki Shimazaki, Toyohiko Matsuta, Masaaki Kobayashi | 1992-03-10 |
| 5062007 | Digital signal magnetic recording/reproducing apparatus | Etsuto Nakatsu, Hiroaki Shimazaki, Toyohiko Matsuta, Masaaki Kobayashi | 1991-10-29 |
| 4979052 | Digital signal magnetic recording/reproducing apparatus | Toyohiko Matsuta, Masaaki Kobayashi | 1990-12-18 |
| 4704639 | Video signal reproduction apparatus | Kazuhiro Yamanishi, Masaaki Kobayashi | 1987-11-03 |
| 4629994 | FM demodulator | Masaaki Kobayashi | 1986-12-16 |