Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7796495 | Optical disk | Tsuyoshi Yamamoto, Satoru Miyoshi, Shinichi Nakahashi | 2010-09-14 |
| 7529172 | Optical disk recording and playback device | Tsuyoshi Yamamoto | 2009-05-05 |
| 7365296 | Light reception output controlling apparatus of photo detector in optical pickup unit | Shigeru Nakamura, Misao Kuramochi, Mitsuhiro Hiruma, Michiyoshi Sawada, Hiromitsu Kondo | 2008-04-29 |
| 7184379 | Optical disk recording/reproducing method and apparatus in which recording properties of the disk are detected when recording speed is changed | Toru Tanaka, Yasushi Hanamoto, Shinji Seki, Toshihiko Hiroshima, Yutaka Imamura | 2007-02-27 |
| 7149164 | Optical disc apparatus for processing data according to different optical disc standards to achieve higher recording density | Katsuki Hattori | 2006-12-12 |
| 7149167 | Data recorder | Koji Hayashi, Yasushi Hanamoto, Tohru Tanaka | 2006-12-12 |
| 7149165 | Controller for data recorder | Koji Hayashi, Yasushi Hanamoto, Tohru Tanaka | 2006-12-12 |
| 7102974 | Optical head optical output setting method and optical disk recording apparatus | Yasushi Hanamoto, Katsuki Hattori | 2006-09-05 |
| 7099246 | Method and apparatus for recording data on an optical disc with restarting writing of data after data recording interruption | Koji Hayashi | 2006-08-29 |
| 7068571 | Optical recording apparatus and control method thereof | Michiyoshi Sawada, Kazunori Ueki, Tadashi Iwama | 2006-06-27 |
| 7020060 | Disc recording apparatus and disc | — | 2006-03-28 |
| 7000134 | Controlling the maximum rotation speed of a disk drive device based on the presence of an external power source and the possibility of a buffer underrun | — | 2006-02-14 |
| 6992957 | Controller of data recorder | Koji Hayashi, Yasushi Hanamoto, Tohru Tanaka | 2006-01-31 |
| 6980497 | Optical disk recording apparatus and control method thereof | Michiyoshi Sawada | 2005-12-27 |
| 6958961 | Data processing circuit for temporarily suspending data recording onto a disk | — | 2005-10-25 |
| 6775211 | System and method for disk recording | — | 2004-08-10 |
| 6728802 | Control method of optical disk recording/reproducing apparatus | Katsuki Hattori | 2004-04-27 |
| 6587416 | Disk recording apparatus for controlling interruption of data and securing interleave length of first and last blocks of data after start and release of recording interruption | — | 2003-07-01 |
| 6587422 | Disk recording device for overwriting data on a defined recording region | — | 2003-07-01 |
| 6584053 | Disk recording system | — | 2003-06-24 |
| 6560180 | Disk storage device | Tsuyoshi Yamamoto, Katsuki Hattori | 2003-05-06 |
| 6496458 | Synchronized disk recording device having speed variation with recording condition | — | 2002-12-17 |
| 6430127 | Disk player for performing data reproduction recorded on a disk | — | 2002-08-06 |
| 5841742 | Optical disk unit using a single demodulator circuit for demodulating two disk players | Yutaka Kaneko, Takeshi Aoki, Yoji Honda, Takashi Iwasaki | 1998-11-24 |
| 5802026 | Disk player for constant angular velocity reproduction of a disk | — | 1998-09-01 |