Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10347258 | Voice communication system | — | 2019-07-09 |
| 8971277 | Wireless communication system and receiving device | Masayuki Takekawa, Keigo Hasegawa, Keat Beng Toh | 2015-03-03 |
| 8295674 | Video signal recording and reproducing apparatus | Yoshikazu Katou | 2012-10-23 |
| 8285109 | Video signal recording and reproducing apparatus | Yoshikazu Katou | 2012-10-09 |
| 7590332 | Video signal recording and reproducing apparatus | Yoshikazu Katou | 2009-09-15 |
| 7231136 | Video signal recording and reproducing apparatus | Yoshikazu Katou | 2007-06-12 |
| 6430363 | Video signal recording and reproducing apparatus | Yoshikazu Katou | 2002-08-06 |
| 6377915 | Speech decoding using mix ratio table | — | 2002-04-23 |
| 6226447 | Video signal recording and reproducing apparatus | Yoshikazu Katou | 2001-05-01 |
| 5621760 | Speech coding transmission system and coder and decoder therefor | Hiroki Gotoh, Masayasu Miyake | 1997-04-15 |
| 5539858 | Voice coding communication system and apparatus | Masayasu Miyake | 1996-07-23 |
| 5509102 | Voice encoder using a voice activity detector | — | 1996-04-16 |
| 5475712 | Voice coding communication system and apparatus therefor | — | 1995-12-12 |
| 5278944 | Speech coding circuit | Masayasu Miyake, Kenzo Urabe | 1994-01-11 |
| 4910605 | Video signal recording method and apparatus for field-segment recording | Mitsuo Chiba, Tatsushi Bannai, Shigeru Awamoto | 1990-03-20 |
| 4887169 | Video signal recording and playback apparatus having varied-speed playback capability | Tatsushi Bannai, Shigeru Awamoto, Mitsuo Chiba | 1989-12-12 |
| 4839744 | Video signal recording method and associated recording/reproducing apparatus | Shigeru Awamoto, Tatsushi Bannai, Katsuya Yokoyama, Hiromichi Shibaya | 1989-06-13 |
| 4807056 | Method and apparatus for video signal recording and playback signal level compensation based on recorded reference signal | Mitsuo Chiba, Tatsushi Bannai, Shigeru Awamoto | 1989-02-21 |
| 4745506 | Magnetic head for perpendicular magnetic recording and reproduction | Kazuo Nakamura, Ken Takahashi, Hiroshi Yohda, Nobuyuki Kaminaka | 1988-05-17 |
| 4700252 | Magnetic thin film head | Hiroaki Muraoka, Ken Takahashi, Hiroshi Youda | 1987-10-13 |
| 4654739 | Thin film magnetic head for reproducing perpendicular magnetization | Ken Takahashi, Hiroshi Youda, Kenji Kanai | 1987-03-31 |
| 4613918 | Perpendicular magnetic playback head and a perpendicular magnetic recording and reproducing device | Kenji Kanai, Ken Takahashi, Ryuji Sugita | 1986-09-23 |
| 4477488 | Method of manufacturing magnetic recording medium | Ryuji Sugita, Kenji Kanai, Ken Takahashi | 1984-10-16 |