Issued Patents All Time
Showing 76–91 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5048004 | Optical recording medium recording and reproducing device | Toshihisa Deguchi, Takeshi Yamaguchi, Takashi Iwaki, Tsuneo Fujiwara, Shigeo Terashima | 1991-09-10 |
| 5010540 | Apparatus for recording and reproducing information on and from an optical disk | Hiroshi Fuji, Tsuneo Fujiwara, Takashi Iwaki, Tomiyuki Numata, Kentaroh Tsuji +4 more | 1991-04-23 |
| 5005164 | Recording and reproducing apparatus | Noriaki Sakamoto, Toshihiro Yamanaka, Toshihisa Deguchi, Nobuyuki Horie, Takeshi Yamaguchi +1 more | 1991-04-02 |
| 5005165 | Method for managing information on a storage media without losing information due to effects | Toshihiro Yamanaka, Nobuyuki Horie | 1991-04-02 |
| 4999824 | Magneto-optical memory device | Hiroshi Fuji, Noriaki Sakamoto, Shigeo Terashima, Takeshi Yamaguchi, Kentaro Tsuji +1 more | 1991-03-12 |
| 4958337 | Disk recording checking method for determining if a disk is defective by the number of errors present | Toshihiro Yamanaka, Nobuyuki Horie, Shozou Kobayashi, Toshihisa Deguchi, Takeshi Yamaguchi +2 more | 1990-09-18 |
| 4939710 | Optical magnetic memory device utilizing non-recorded portions of recording medium to represent data | Hiroshi Fuji, Takeshi Yamaguchi, Toshihisa Deguchi, Shozou Kobayashi | 1990-07-03 |
| 4924447 | Optical memory device for recording, reproducing or erasing information onto a recording medium, including a recorded region detecting circuit. | Hiroshi Fuji, Noriaki Sakamoto, Shigeo Terashima, Takeshi Yamaguchi, Kentaro Tsuji +1 more | 1990-05-08 |
| 4920528 | Method of disk recording using alternative recording tracks | Noriaki Sakamoto, Yoshiki Nishioka, Toshihiro Yamanaka, Nobuyuki Horie, Shozou Kobayashi +1 more | 1990-04-24 |
| 4910479 | Automatic gain control device for use in an optical memory device | Hiroshi Fuji, Takeshi Yamaguchi, Kunio Kojima, Toshihisa Deguchi, Shigeo Terashima | 1990-03-20 |
| 4906874 | Analog signal switching device for use in an optical memory | Hiroshi Fuji, Takeshi Yamaguchi, Kunio Kojima, Toshihisa Deguchi, Shigeo Terashima | 1990-03-06 |
| 4868922 | Data modulation/demodulation system utilizing demodulation clocks that differ in phase | Kentaro Tsuji, Tsuneo Fujiwara, Taeshi Yamaguchi, Toshihisa Deguchi, Shozou Kobayashi | 1989-09-19 |
| 4862443 | Sync signal detection apparatus for accurately synchronizing reproduced data | Kentaroh Tsuji, Takeshi Yamaguchi, Toshihisa Deguchi, Noriaki Sakamoto, Shigeo Terashima | 1989-08-29 |
| 4788674 | Optical disc record reproducing apparatus | Toshihisa Deguchi, Takeshi Yamaguchi, Shozou Kobayashi | 1988-11-29 |
| 4384284 | Keyboard operated audio visual system | Hiromi Juso, Shigeki Tsuji | 1983-05-17 |
| 4310838 | Instruction controlled audio visual system | Hiromi Juso, Shigeki Tsuji | 1982-01-12 |