Issued Patents All Time
Showing 451–475 of 552 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6567018 | Data recording medium, contents data, recording medium, data recording method and apparatus, and data reproducing method and apparatus | Tatsuya Inokuchi, Tetsuji Kawashima | 2003-05-20 |
| 6546490 | Signal transmision method | Yoshitomo Osawa, Akira Kurihara, Isao Kawashima, Shigeyuki Yoneyama | 2003-04-08 |
| 6519217 | Data record medium, data recording and/or reproducing apparatus, and record medium determining method | Tetsuji Kawashima, Katsumi Toyama, Tatsuya Inokuchi, Shigeki Tsukatani, Yukio Shishido | 2003-02-11 |
| 6516064 | Signal recording apparatus, signal record medium and signal reproducing apparatus | Yoshitomo Osawa, Akira Kurihara, Isao Kawashima | 2003-02-04 |
| 6496807 | Recording medium, recording method and recording apparatus incorporating anti-tamper features involving writing billing information into a write-once area | Tatsuya Inokuchi, Masayuki Obata, Shuichi Ito, Kazuko Sakurai | 2002-12-17 |
| 6487293 | Method and apparatus for reproducing ciphered data | Isao Kawashima, Akira Kurihara, Yoshitomo Osawa, Hideo Owa | 2002-11-26 |
| 6463153 | Method for transmitting data apparatus for recording data medium for recording data and apparatus for reproducing data | Yoshitomo Osawa, Akira Kurihara, Isao Kawashima, Hideo Owa | 2002-10-08 |
| 6445795 | Data recording method and apparatus, data record medium and data reproducing method and apparatus | Isao Kawashima, Akira Kurihara, Yoshitomo Osawa, Hideo Owa | 2002-09-03 |
| 6438084 | Data recording apparatus and method, data playback apparatus and method, and optical disc | Tetsuji Kawashima, Yukio Shishido, Tatsuya Inokuchi | 2002-08-20 |
| 6363209 | Signal recording/reproducing method and apparatus, signal record medium and signal | Isao Kawashima, Yoshitomo Osawa, Akira Kurihara, Shozo Masuda | 2002-03-26 |
| 6363148 | Method, apparatus and computer program for activating an alternate encryption using an identifier embedded in data | — | 2002-03-26 |
| 6345146 | Signal recording/reproducing method and apparatus, signal record medium and signal transmission/reception method and apparatus | Isao Kawashima, Yoshitomo Osawa, Akira Kurihara, Shozo Masuda | 2002-02-05 |
| 6344940 | Method and apparatus for adding 1/f fluctuation to an audio signal | Heitaro Nakajima | 2002-02-05 |
| 6345145 | Signal recording/reproducing method and apparatus, signal record medium and signal transmission/reception method and apparatus | Isao Kawashima, Yoshitomo Osawa, Akira Kurihara, Shozo Masuda | 2002-02-05 |
| 6289103 | Signal reproducing/recording/transmitting method and apparatus and signal record medium | Shigeyuki Yoneyama | 2001-09-11 |
| 6256420 | Data transmission system | Yuichi Kojima | 2001-07-03 |
| 6256392 | Signal reproducing/recording/transmitting method and apparatus and signal recording medium | Shigeyuki Yoneyama | 2001-07-03 |
| 6226247 | Data recording apparatus that identifies the type of data in each block of data | Katsumi Toyama | 2001-05-01 |
| 6215745 | Decoding key recorded at a recording site in order to decode information transmitted to that site is encoded with information specific to the recording site | Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa | 2001-04-10 |
| 6215750 | Data recording/reproducing apparatus and method corresponding to a plurality of data formats, and data recording medium | Tamotsu Yamagami | 2001-04-10 |
| 6185687 | Signal reproducing/recording/transmitting method and apparatus and signal record medium | Shigeyuki Yoneyama | 2001-02-06 |
| 6134201 | Data recording apparatus, method therefor, data reproducing apparatus, method therefor and record medium | Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa | 2000-10-17 |
| 6118754 | Data recording/reproducing apparatus and method corresponding to a plurality of data formats, and data recording medium | Tamotsu Yamagami | 2000-09-12 |
| 6108423 | Signal reproducing/recording/transmitting method and apparatus and signal record medium | Shigeyuki Yoneyama | 2000-08-22 |
| 6064639 | High speed data recording and/or reproducing method and apparatus with increased data sector access speed | Tamotsu Yamagami, Shoei Kobayashi | 2000-05-16 |