Issued Patents All Time
Showing 76–100 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829211 | Optical recording medium having first and second recording areas of different formats | Yoichiro Sako, Katsumi Toyama | 2004-12-07 |
| 6804188 | Data recording medium, data recording apparatus and method, and data reproducing apparatus and method | Yukio Shishido, Tetsuji Kawahima, Yoichiro Sako, Katsumi Toyama, Shigeki Tsukatani | 2004-10-12 |
| 6738752 | Information distributing apparatus and information distributing method, information receiving apparatus and information receiving met | Yoichiro Sako, Shuichi Ito, Masayuki Obata, Kazuko Sakurai | 2004-05-18 |
| 6731578 | Optical disk recording and/or reproducing device, and focusing servomechanism | Yoichiro Sako, Hiroshi Ogawa | 2004-05-04 |
| 6728174 | Recording medium and reproducing method and apparatus for recording medium | Yoichiro Sako, Hiroshi Ogawa | 2004-04-27 |
| 6707784 | Optical storage medium having two recording areas of different formats | Yoichiro Sako, Katsumi Toyama | 2004-03-16 |
| 6700845 | Multi-layer optical recording medium and method and apparatus for reproducing optical data | Yoichiro Sako, Takao Ihashi, Hiroshi Ogawa, Masanobu Yamamoto | 2004-03-02 |
| 6680889 | Data recording medium and data recording apparatus | Shuichi Ito, Yoichiro Sako, Masayuki Obata, Kazuko Sakurai | 2004-01-20 |
| 6657938 | Disk having expanded elapsed time information | Yoichiro Sako, Tetsuji Kawahima, Yukio Shishido, Shigeki Tsukatani, Katsumi Toyama | 2003-12-02 |
| 6567018 | Data recording medium, contents data, recording medium, data recording method and apparatus, and data reproducing method and apparatus | Tetsuji Kawashima, Yoichiro Sako | 2003-05-20 |
| 6519217 | Data record medium, data recording and/or reproducing apparatus, and record medium determining method | Tetsuji Kawashima, Katsumi Toyama, Yoichiro Sako, Shigeki Tsukatani, Yukio Shishido | 2003-02-11 |
| 6496807 | Recording medium, recording method and recording apparatus incorporating anti-tamper features involving writing billing information into a write-once area | Yoichiro Sako, Masayuki Obata, Shuichi Ito, Kazuko Sakurai | 2002-12-17 |
| 6438084 | Data recording apparatus and method, data playback apparatus and method, and optical disc | Tetsuji Kawashima, Yukio Shishido, Yoichiro Sako | 2002-08-20 |
| 6144969 | File name conversion | Osamu Udagawa, Yasuyoshi Kaneko, Kazuhisa Taira | 2000-11-07 |
| 6138203 | Information processing apparatus and method enabling a write-once recording medium to be utilized as a rewriteable recording medium | Osamu Udagawa, Yasuyoshi Kaneko | 2000-10-24 |
| 6134626 | Method and apparatus for recording data using multiple buffers | Osamu Udagawa, Shigeki Tsukatani | 2000-10-17 |
| 5978812 | Information processor and method of information processing | Osamu Udagawa, Yasuyoshi Kaneko | 1999-11-02 |
| 5896351 | Recording method for optical disk drive | Tadayuki Misaizu, Shigeki Tsukatani | 1999-04-20 |
| 5894588 | Data transmitting apparatus, data recording apparatus, data transmitting method, and data recording method | Tetsuji Kawashima | 1999-04-13 |
| 5805932 | System for transmitting compressed data if compression ratio is at least preset ratio and pre-compressed data if compression ratio is less than preset ratio | Tetsuji Kawashima | 1998-09-08 |
| 5778257 | Multi-session disc-shaped for recording audio and computer data having disc type code area located in each session for recording common and particular disc type code | Shigeki Tsukatani, Hiroyuki Ito | 1998-07-07 |
| 5745459 | Methods and apparatus for managing recording medium | Shigeki Tsukatani, Tadayuki Misaizu | 1998-04-28 |
| 5559778 | Apparatus and method for completing an incomplete recording on an optical disc | Shigeki Tsukatani, Tadayuki Misaizu | 1996-09-24 |
| 5414688 | Disk replication apparatus | — | 1995-05-09 |
| 5200943 | Method and apparatus for controlling encoding and recording of main information data in accordance with different detected data formats of the main information data | Tatsushi Sano | 1993-04-06 |