Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6434440 | Production estimate management system | Yoshiharu Teranishi, Hajime Ogawa, Yoshikazu Narita, Toshiyuki Matsume | 2002-08-13 |
| 6298024 | Device for identifying optical disc type based on density of radial information tracks thereon | — | 2001-10-02 |
| 6014354 | Tracking control device for optical pickup | Takeshi Yamaguchi | 2000-01-11 |
| 5872439 | Motor control device | — | 1999-02-16 |
| 5818651 | Motor control device for information recording and reproducing apparatus | — | 1998-10-06 |
| 5642340 | Device for controlling focus of an optical disk apparatus | — | 1997-06-24 |
| 5581521 | Device for controlling the motor of a recording and reproducing apparatus | Masaaki HANANO, Takeshi Yamaguchi, Shigeo Terashima | 1996-12-03 |
| 5553040 | Offset compensation apparatus for tracking error signal of optical recording reproduction apparatus | Masaaki HANANO | 1996-09-03 |
| 5335214 | Optical recording track access driving apparatus | Hirotsugu Matoba, Takeshi Yamaguchi | 1994-08-02 |
| 5311490 | Access controlling device for use in an optical disk drive | Hirotsugu Matoba, Takeshi Yamaguchi, Kunio Kojima, Shigeo Terashima | 1994-05-10 |
| 5301174 | Optical disk recording and reproducing apparatus | Hirotsugu Matoba, Toshihisa Deguchi, Shigeo Terashima | 1994-04-05 |
| 5107472 | Track access and laser beam alignment system for an optical recording and reproduction apparatus | Tsuneo Fujiwara, Toshihisa Deguchi, Kunio Kojima, Takeshi Yamaguchi | 1992-04-21 |
| 5101386 | Track jumping apparatus for an optical disk pickup | Kunio Kojima, Tomiyuki Numata, Takashi Iwaki | 1992-03-31 |
| 5084848 | Feedback control apparatus in an optical recording and reproducing device | Toshihisa Deguchi, Tomiyuki Numata, Kunio Kojima | 1992-01-28 |
| 5001732 | Track counter for optical disk | Hirotsugu Matoba, Toshihisa Deguchi, Shigeo Terashima | 1991-03-19 |
| 4864125 | Extra magnetic field positioning apparatus | Hisashi Minami, Toshihisa Deguchi, Takao Hyuga | 1989-09-05 |
| 4849953 | Tracking circuit for an optical information recording and reproducing apparatus | Toshihisa Deguchi, Shigeo Terashima | 1989-07-18 |
| 4782476 | Objective lens-driving unit | Yoshihiro Sekimoto, Toshihisa Deguchi, Mitsuo Ishii | 1988-11-01 |