Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6973582 | Audio signal output device in which optical signals are not output when a plug is not connected to an S/PDIF output terminal | Atsuko Sugiura, Naoya Ishii, Toshiaki Uotani | 2005-12-06 |