Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6990204 | Interface security system and method | — | 2006-01-24 |
| 5805604 | Apparatus and method for reading and writing data | — | 1998-09-08 |
| 4860272 | Erroneous track jump restoration apparatus for optical record disc player | Jun Inagawa, Takeshi Inagaki, Toshihiko Kaneshige, Yasuhiro Hayashi, Tadashi Kojima | 1989-08-22 |
| 4727505 | Convolution arithmetic circuit for digital signal processing | Kazuo Konishi | 1988-02-23 |
| 4701875 | High speed convolution arithmetic circuit with multiple counters | Kazuo Konishi | 1987-10-20 |
| 4583211 | Frequency detecting circuit for digital information reproducing system | Yukio Nakamura, Tadashi Kojima | 1986-04-15 |
| 4575835 | Motor control circuit of data reproduction apparatus | Tadashi Kojima | 1986-03-11 |
| 4502024 | Pulse-width modulation circuit | Masahide Nagumo, Tadashi Kojima | 1985-02-26 |
| 4495474 | PLL Control circuit for recovery of data from audio disk | Yukio Nakamura, Tadashi Kojima | 1985-01-22 |