Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5583836 | Optical recording/reproducing apparatus capable of multi-track access for simultaneous multitrack recording/reproduction | Takao Rokutan, Takefumi Sakurada, Naoaki Tani, Takumi Sugaya | 1996-12-10 |
| 5568458 | Optical information recording and reproducing apparatus in which reproducing light is used to perform servo control having no offset at recording mode | Naoaki Tani, Takumi Sugaya, Takao Rokutan, Takefumi Sakurada | 1996-10-22 |
| 5511051 | Optical recording/reproducing apparatus capable of multi-track access for simultaneous multirack recording/reproduction | Takao Rokutan, Takefumi Sakurada, Naoaki Tani, Takumi Sugaya | 1996-04-23 |
| 5475665 | Optical information writing and reading apparatus having two light sources | Naoaki Tani | 1995-12-12 |
| 5448048 | Optical card recording/reproducing apparatus with presetting of card sector position data for detecting sector positions | — | 1995-09-05 |
| 5438563 | Optical information recording/reproducing device which simultaneously reproduces information from plural tracks and optical information recording/reproducing method | Takefumi Sakurada, Naoaki Tani, Takumi Sugaya, Takao Rokutan | 1995-08-01 |
| 5416309 | Information regenerating apparatus for an optical recording medium | — | 1995-05-16 |
| 5402399 | Apparatus and method for reproducing information data from optical cards | Takefumi Sakurada, Naoaki Tani, Takumi Sugaya, Takao Rokutan | 1995-03-28 |
| 5400308 | Optical information recording/reproducing device capable of recording information on a moving medium and reproducing information by using reproducing light beams | Takumi Sugaya, Takao Rokutan, Takefumi Sakurada, Naoaki Tani | 1995-03-21 |
| 5398225 | Optical information recording/regenerating apparatus and track scanning method for an optical information recording/regenerating apparatus | Takumi Sugaya, Takao Rokutan, Takefumi Sakurada, Naoaki Tani | 1995-03-14 |
| 5396109 | Bit clock regenerating circuit and data regenerating method | — | 1995-03-07 |
| 5394385 | Optical information recording/reproducing apparatus for performing positioning of recording/reproducing spot by selection of pairs of photo detecting elements | Takefumi Sakurada, Naoaki Tani, Takumi Sugaya, Takao Rokutan, Akira Shirai | 1995-02-28 |
| 5293568 | Track-address judging method | Kazutake Sugawara | 1994-03-08 |
| 5285433 | Apparatus with position detecting means for recording and/or reproducing data on and/or from optical card | Toshio Horiguchi | 1994-02-08 |
| 5229985 | Data recording/reproducing apparatus capable of detecting data recording state | — | 1993-07-20 |
| 5226026 | Optical card reproducing apparatus provided with a function of generating pseudo synchronizing pattern detecting signals | — | 1993-07-06 |
| 5222058 | Data recording apparatus capable of recording with predetermined data arrangement | — | 1993-06-22 |
| 5132522 | Information-reading method | — | 1992-07-21 |