Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5717506 | Image communication apparatus for communicating binary and multi-value color image data | Kiyonobu Endo, Susumu Matsumura, Hiroaki Hoshi, Koyo Hasegawa, Eiji Yamaguchi +2 more | 1998-02-10 |
| 5712840 | Optical information recording/reproduciing apparatus having two-division detectors | Susumu Matsumura, Eiji Yamaguchi, Hiroaki Hoshi, Hideki Morishima | 1998-01-27 |
| 5701279 | Optical information recording-reproducing apparatus including a light beam detector being divided by a division line extending in a direction perpendicular to an information track | Hiroaki Hoshi, Susumu Matsumura, Eiji Yamaguchi | 1997-12-23 |
| 5668872 | Information processing method and system | Hideki Morishima, Kiyonobu Endo, Susumu Matsumura, Hiroaki Hoshi, Koyo Hasegawa +2 more | 1997-09-16 |
| 5627582 | Stereoscopic compression processing with added phase reference | Tomotaka Muramoto | 1997-05-06 |
| 5610897 | Optical information reproducing apparatus | Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi | 1997-03-11 |
| 5581532 | Optical information recording/reproducing apparatus for accurately detecting magnetic domain edges | Susumi Matsumura, Eiji Yamaguchi, Hiroaki Hoshi, Hideki Morishima | 1996-12-03 |
| 5577017 | Magnetooptical information recording/reproducing apparatus | Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi | 1996-11-19 |
| 5555231 | Information recording method, method for reproducing recorded information, and apparatus therefor | — | 1996-09-10 |
| 5539718 | Optical head for controlling light irradiation in a magneto-optical recording and/or reproducing apparatus | Hiroaki Hoshi, Susumu Matsumura, Eiji Yamaguchi | 1996-07-23 |
| 5517471 | Method and apparatus for verifying recording data and for determining recording error using a detected light amount | Takaaki Ashinuma, Takatoshi Suzuki | 1996-05-14 |
| 5475669 | Information reproducing method and apparatus for counting the number of errors and warning | — | 1995-12-12 |
| 5450376 | Optical information recording/reproduction apparatus with super-resolution optical filter | Susumu Matsumura, Hiroaki Hoshi, Eiji Yamaguchi | 1995-09-12 |
| 5428586 | Magneto-optical recording method using a magneto-optical recording medium having two or more magnetic layers to allow recording and reproduction to be effected simultaneously and magneto-optical recording medium used in the method | Tadashi Kobayashi, Koyo Hasegawa, Kazuoki Hongu | 1995-06-27 |
| 5365535 | Semiconductor laser and beam splitting devices, and optical information recording/reproducing, optical communication, and optomagnetic recording/reproducing apparatuses using semiconductor laser and beam splitting devices | Eiji Yamaguchi, Hiroaki Hoshi, Sotomitsu Ikeda | 1994-11-15 |
| 5333125 | Optical information processing apparatus having a neural network for inducing an error signal | — | 1994-07-26 |
| 5329517 | Optical information recording and reproducing apparatus utilizing a plurality of recording light spots | Eiji Yamaguchi, Susumu Matsumura, Hiroaki Hoshi, Hideki Morishima | 1994-07-12 |
| 5297128 | Optical information recording/reproducing apparatus including means for varying intensity of a preheating light beam | Eiji Yamaguchi, Susumu Matsumura, Hiroaki Hoshi, Hideki Morishima | 1994-03-22 |
| 5280160 | Recording and reproducing method and apparatus compensating for predicted deviation based on detected relative skewing of recording medium | Masahisa Fujino | 1994-01-18 |
| 5233578 | Method of recording information on a recording medium having at least two magnetic layers | Koyo Hasegawa, Yasuyuki Miyaoka, Yutaka Ogasawara, Makoto Hiramatsu, Susumu Matsumura | 1993-08-03 |
| 5199023 | Optical information recording medium with a separating part between information tracks | Shigeto Kanda | 1993-03-30 |
| 5051974 | Optical head device having a light splitter with a diffraction grating structure | Naosato Taniguchi, Kiyonobu Endo, Tetsuro Kuwayama, Hiroaki Hoshi, Hiroshi Osawa +1 more | 1991-09-24 |
| 4912311 | Information recording carrier | Koyo Hasegawa, Hiroaki Hoshi | 1990-03-27 |
| 4912694 | Information reproducing method and apparatus including comparison of a parity valve counted by a flip-flop with a parity bit attached to a data unit | — | 1990-03-27 |