Issued Patents All Time
Showing 276–300 of 338 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5790492 | Crosstalk canceler with digital filter for producing pseudo crosstalk component | Masaru Umezawa | 1998-08-04 |
| D394904 | Control device for non-contact eye pressure measuring apparatus | — | 1998-06-02 |
| 5754512 | Correction elements to lower light intensity around an optical axis of an optical head with a plurality of focal points | Yoshiaki Komma, Sadao Mizuno, Kenichiro Urairi | 1998-05-19 |
| D394505 | Non-contact eye-pressure measuring apparatus | — | 1998-05-19 |
| 5745457 | Optical disk player with coarse and fine speed control | Hideki Kobayashi | 1998-04-28 |
| 5742576 | Digital signal reproducing apparatus | Masaru Umezawa, Hideki Kobayashi | 1998-04-21 |
| 5740152 | Spindle servo circuit in an apparatus for playing an optical disk having synchronous marks and data marks satisfying certain criteria | Fumihiko Yokogawa | 1998-04-14 |
| 5719847 | Optical disk player having waveform distortion compensating function | Kiyoshi Tateishi, Kaoru Yamamoto, Masaru Umezawa | 1998-02-17 |
| 5703856 | Optical head and optical data recording and reproducing apparatus having the same | Sadao Mizuno, Noboru Ito, Kenichiro Urairi, Yoshiaki Komma | 1997-12-30 |
| 5703866 | Disk-changing device with reciprocating back-switching step cam plates | Yuji Teraguchi | 1997-12-30 |
| 5684773 | Information reproduction apparatus compatible with different recording media | — | 1997-11-04 |
| 5673211 | Digital data reproducing apparatus | Masaru Umezawa | 1997-09-30 |
| 5663945 | Digital phase locked loop with a digital voltage controlled oscillator in a recording information reproducing apparatus | Masaru Umezawa | 1997-09-02 |
| 5657312 | Optical disc having pits in multiple regions and signal processing circuit therefor | — | 1997-08-12 |
| 5656088 | Apparatus for dipping substrates in processing fluid | Kenji Sugimoto, Tadashi MAEGAWA, Akihiko Hidaka, Toshio Hiroe | 1997-08-12 |
| 5633821 | Nonvolatile memory device | Kiyoshi Nishimura, Jun Muramoto, Takaaki Fuchikami, Hiromi Uenoyama | 1997-05-27 |
| 5629924 | Optical disk having synchronous marks and data marks to satisfy certain criteria | Fumihiko Yokogawa | 1997-05-13 |
| 5606540 | Digital signal reproducing apparatus | — | 1997-02-25 |
| 5600626 | Optical disk of sampled servo type having synchronization a marks for simple synchronization detection | Fumihiko Yokogawa, Yoshimi Tomita | 1997-02-04 |
| 5592409 | Nonvolatile memory | Kiyoshi Nishimura, Jun Muramoto, Takaaki Fuchikami, Hiromi Uenoyama | 1997-01-07 |
| 5587992 | Sampled-servo type optical disk having clock pits arranged offset from each other in the disk radial direction | — | 1996-12-24 |
| 5572496 | Apparatus for reproducing an encoded digital signal based on a frame synchronization signal | Masaru Umezawa | 1996-11-05 |
| 5568456 | Crosstalk Canceler | Yukiyoshi Haraguchi | 1996-10-22 |
| 5566155 | Digital signal reproducing apparatus using a viterbi decoder | — | 1996-10-15 |
| 5541871 | Nonvolatile ferroelectric-semiconductor memory | Kiyoshi Nishimura, Jun Muramoto, Takaaki Fuchikami, Hiromi Uenoyama | 1996-07-30 |