Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6104865 | Video signal recording and/or reproducing apparatus for recording and/or reproducing a signal obtained by converting a number of scanning lines of a video signal | Masakazu Hamaguchi, Hiroaki Takahashi | 2000-08-15 |
| 5907364 | Display device for information signals | Sadao Kubota, Shutoku Watanabe | 1999-05-25 |
| 5699471 | Magnetic recording and reproducing apparatus of video signals | Manabu Katsuki, Hiroki Mizosoe | 1997-12-16 |
| 5499145 | Magnetic recording apparatus with capability of recording signals of a plurality of different television systems | Nobuo Azuma, Katsumi Takeda, Hiroaki Takahashi | 1996-03-12 |
| 5414523 | Audio signal recording/reproducing apparatus for recording and reproducing high-definition television system audio signal of a plurality of channels | Nobuo Azuma, Hiroaki Takahashi | 1995-05-09 |
| 5374955 | High-definition imaging device, and apparatuses for recording and playing back high-definition picture information | Nobuo Azuma, Hiroki Mizosoe, Manabu Katsuki | 1994-12-20 |
| 5363251 | Magnetic recorIding device | Masayoshi Kamo, Yuzo Maruta, Hiroaki Sando | 1994-11-08 |
| 5323273 | Audio signal recording and playback apparatus of magnetic recording and playback apparatus | Nobuo Azuma, Yoshizumi Watatani, Hiroaki Takahashi, Katsumi Takeda | 1994-06-21 |
| 5280396 | Video signal processing apparatus for correcting time base of video signal | Masakazu Hamaguchi, Hiroaki Takahashi | 1994-01-18 |
| 5272519 | Recording/reproducing apparatus employing sum and difference sequential circuitry for lines adjacent in the second or third dimensional direction followed by time base conversion circuitry | Kazutaka Naka, Hiroaki Takahashi | 1993-12-21 |
| 5239421 | Video signal processing method and apparatus with timebase disturbance correction and dropout compensation | Masakazu Hamaguchi, Hiroaki Takahashi | 1993-08-24 |
| 4972335 | Video signal recording and reproducing apparatus and method suitable for recording video signals including horizontal scanning line signals | Hiroaki Takahashi | 1990-11-20 |
| 4967161 | Signal processing method and apparatus | Hiroaki Takahashi, Manabu Katsuki | 1990-10-30 |
| 4954902 | Tracking control method and device in rotary head type magnetic recording and reproducing apparatus | Kenji Satoh | 1990-09-04 |
| 4916553 | Video signal recording and reproducing method and apparatus | Atsushi Yoshioka, Hitoaki Owashi, Katsuo Mouri | 1990-04-10 |
| 4907081 | Compression and coding device for video signals | Fujio Okamura, Keizo Nishimura, Shigemitsu Higuchi | 1990-03-06 |
| 4873582 | Video signal and method therefor time axis altering circuit used in a video tape recorder for recording a broadband video signal | Hitoaki Owashi, Takayasu Ito, Masakazu Hamaguchi | 1989-10-10 |
| 4843493 | Rotary head type magnetic recording and reproducing apparatus and method of producing tracking control signals therefor | Yasufumi Yumde, Fujio Okamura, Takaharu Noguchi, Toshifumi Shibuya, Katsuo Mohri +2 more | 1989-06-27 |
| 4825299 | Magnetic recording/reproducing apparatus utilizing phase comparator | Yoshinori Okada, Shigemitsu Higuchi, Hiroaki Takahashi, Yasufumi Yunde | 1989-04-25 |
| 4772950 | Method and apparatus for sampling and processing a video signal | Hitoaki Owashi, Michio Hibi | 1988-09-20 |
| 4761523 | Gas switch with pressure recease cover | Kunio Mitsukuchi, Hiromitsu Ito, Isamu Eguchi, Bunji Hirasato | 1988-08-02 |
| 4746996 | Skew error correction circuit for video signal reproducing apparatus | Hitoaki Owashi, Michio Hibi | 1988-05-24 |
| 4723058 | Gas switch | Kunio Mitsukuchi, Isamu Eguchi, Fumio Ito, Hiromitsu Ito, Masahide Takesita | 1988-02-02 |
| 4701583 | Gas switch | Kunio Mitsukuchi, Hiromitsu Ito, Isamu Eguchi, Bunji Hirasato | 1987-10-20 |
| 4688081 | Apparatus for correcting time base error of video signal | Hitoaki Owashi | 1987-08-18 |