Issued Patents 2002
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487363 | Video duplication control signal, video playback device, video recording device, information superimposing and extracting device and video recording medium | Akira Ogino, Takashi Usui | 2002-11-26 |
| 6453118 | Information transmission method, information duplication prohibiting method, information duplication prohibition device and information crevording medium | Akira Ogino, Takashi Usui | 2002-09-17 |
| 6430158 | Wireless communication method, wireless communication apparatus and wireless communication control apparatus | — | 2002-08-06 |
| 6430172 | Radio communication system, transmitting apparatus, radio communication control apparatus, receiving apparatus, and radio communication method | Takashi Usui, Hisaki Hiraiwa | 2002-08-06 |
| 6411664 | Correlation detecting apparatus, its detecting method and communication apparatus and its communication method | Takashi Usui, Hisaki Hiraiwa | 2002-06-25 |
| 6389220 | Information signal duplication control system | Takashi Usui, Akira Ogino | 2002-05-14 |
| 6389137 | VIDEO SIGNAL TRANSMITTING METHOD, VIDEO SIGNAL OUTPUT DEVICE, VIDEO SIGNAL RECEIVER, VIDEO ANTI-DUPLICATION CONTROL SYSTEM, ADDITIONAL INFORMATION SUPERIMPOSING AND EXTRACTING SYSTEM AND VIDEO SIGNAL RECORDING MEDIUM | Akira Ogino, Takashi Usui | 2002-05-14 |
| 6381402 | Information output device, information recording device, information duplication control system and recording medium of the same | Akira Ogino, Takashi Usui | 2002-04-30 |
| 6370320 | Information output device, information recording device, information duplication control system and recording medium of the same | Akira Ogino, Takashi Usui | 2002-04-09 |
| 6360052 | Method and device for adding information to video signal, method and device for detection information from video signal, and recording medium | Nozomu Ikeda, Akira Ogino | 2002-03-19 |