Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6891784 | Apparatus and method for re-executing pre-pit detection if pre-pits are not detected after changing reference level | Naoharu Yanagawa, Junji Tanaka, Takakazu Sugiyama | 2005-05-10 |
| 6757233 | Pre-pit detecting device and binarizing level setting method | Junji Tanaka | 2004-06-29 |
| 6754156 | Recording apparatus for use with optical recording medium and method thereof | — | 2004-06-22 |