Issued Patents All Time
Showing 76–100 of 104 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6608810 | Optical disk comprising a positional information section and a sync mark section each having a wobble pattern | Junichi Minamino, Atsushi Nakamura, Shigeru Furumiya, Takashi Ishida, Toyoji Gushima | 2003-08-19 |
| 6577590 | Optical disk having wobble patterns | Junichi Minamino, Atsushi Nakamura, Shigeru Furumiya, Takashi Ishida, Toyoji Gushima | 2003-06-10 |
| 6442114 | Optical disk signal reproducing apparatus and crosstalk canceling system for use therein | Ken'ichi Kasazumi | 2002-08-27 |
| 6356522 | Optical disk drive | Takeharu Yamamoto, Katsuya Watanabe, Mitsuro Moriya, Takashi Kishimoto | 2002-03-12 |
| 6330213 | Optical disk drive apparatus | Takeharu Yamamoto | 2001-12-11 |
| 6208604 | Apparatus and method for optical disk reproduction | Takashi Kishimoto, Takuya Asano | 2001-03-27 |
| 6134197 | Optical disk drive apparatus | Takeharu Yamamoto | 2000-10-17 |
| 5886962 | Tilt control apparatus with tilt target value based on bit error rate signal | Kouichi Takamine, Yasuaki Edahiro, Mitsurou Moriya | 1999-03-23 |
| 5848036 | Optical disk drive equipped with waveform equalizer and focus adjustment circuit | Ryusuke Horibe, Toshiyuki Shimada | 1998-12-08 |
| 5815485 | Recording medium, a method for producing the same, a control method using the recording medium, and a recording/reproducing apparatus using the recording medium | Shinichi Tanaka, Mitsurou Moriya, Shinichi Kadowaki | 1998-09-29 |
| 5808979 | Tracking error signal detector | Osamu Yamaguchi, Yoshihiro Kanda | 1998-09-15 |
| 5805543 | Tilt control apparatus based on pulsed width detection of an information reproduced signal | Kouichi Takamine, Yasuaki Edahiro, Mitsurou Moriya | 1998-09-08 |
| 5777967 | Optical disk device | Toshiyuki Shimada, Yasuaki Edahiro, Mitsurou Moriya, Ryusuke Horibe, Hiroyuki Miyachi | 1998-07-07 |
| 5671200 | Method for detecting the movement of a light beam and optical information reproduction apparatus using the same | Osamu Yamaguchi, Mitsuro Moriya, Hiroyuki Yamaguchi, Yoshihiro Kanda | 1997-09-23 |
| 5663942 | Jitter measurement apparatus detecting amplitude of phase errors between information signal and synchronized clock signal | Motoyuki Kobayashi, Mitsurou Moriya | 1997-09-02 |
| 5610879 | Optical reproducing device, optical reproducing method using the same, and optical record medium used in the same | Mitsurou Moriya, Takeo Ohta, Yasuhiro Sugihara | 1997-03-11 |
| 5523989 | Optical disk drive having functions of detecting disk tilt from difrraction pattern of track and compensating disk tilt with use of comatic lenses | — | 1996-06-04 |
| 5461602 | Optical recording and reproducing method and apparatus using light beams of two different wavelenghts | Mitsuro Moriya | 1995-10-24 |
| 5295131 | Optical information recording disk having embossed clock mark pits and embossed information recording pits | Mitsuro Moriya | 1994-03-15 |
| 5132948 | Phase comparing apparatus and focus error detecting apparatus | — | 1992-07-21 |
| 5088080 | Apparatus for deriving synchronizing signal from pre-formed marks on record carrier | Shinichi Tanaka | 1992-02-11 |
| 5031167 | Focus error detection system for an optical recording/reproducing system | Shinichi Tanaka, Akira Matsubara, Tsuyoshi Okada | 1991-07-09 |
| 5016258 | Digital modulator and demodulator | Shinichi Tanaka, Akira Mitsubara, Tsuyoshi Okada | 1991-05-14 |
| 5008669 | Encoding/decoding system for optical recording/reading | Shinichi Tanaka | 1991-04-16 |
| 4998235 | Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits | Shinichi Tanaka, Akira Matsubara, Tsuyoshi Okada | 1991-03-05 |