Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5852520 | Data conversion method, pilot signal formation method using the same rotary magnetic head device for use therein | Masayuki Ohta | 1998-12-22 |
| 5633632 | Data conversion method and apparatus imbedding pilot signal into converted data and reducing error propagation between datawords | Masako Yamada, Hideaki Kosaka, Masayuki Ohta | 1997-05-27 |
| 5627694 | Recording/reproducing apparatus for recording and reproducing multiple kinds of digital signals having different data amounts per unit time | Masako Yamada, Hideaki Kosaka, Masayuki Ohta | 1997-05-06 |
| 5602547 | Data conversion apparatus and encoding apparatus | Kenji Maeno, Hideaki Kosaka | 1997-02-11 |
| 5574570 | Video signal recording/reproduction apparatus and method for recording/reproducing two kinds of video signals carrying different amounts of information | Ikuo Ohkuma, Makoto Kumano, Ken Onishi | 1996-11-12 |
| 5570248 | Method and system using encoded periodic digital sum variation (DSV) as pilot signal and controlling tracking error using crosstalk from the pilot signal | Masayuki Ohta | 1996-10-29 |
| 5546191 | Recording and reproducing apparatus | Taketoshi Hibi, Kenji Maeno, Ken Onishi, Shinobu Ueda, Akiyoshi Hirano +2 more | 1996-08-13 |
| 5432651 | Data conversion device and recording/reproduction apparatus | Kenji Maeno, Masako Yamada | 1995-07-11 |
| 5365232 | Data conversion method, pilot signal formation method using the same and rotary magnetic head device for use therein | Masayuki Ohta | 1994-11-15 |
| 4636877 | Apparatus for reproducing multiple track digital signals and including timing control of read/write operations | — | 1987-01-13 |