Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778969 | Method and apparatus for encrypting and recording received content information on a recording medium using both medium identification information and a cipher key for encryption | Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Mitsurou Moriya, Yoshinari Takemura | 2004-08-17 |
| 6757391 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON A OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK | Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Mitsuro Moriya | 2004-06-29 |
| 6728178 | Semiconductor laser control method and semiconductor laser control device | Yoshiyuki Miyabata, Makoto Usui, Kohjyu Konno, Yasuhiro Ueki, Tomonori Ueno +2 more | 2004-04-27 |
| 6728882 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK | Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Mitsuro Moriya | 2004-04-27 |