Issued Patents All Time
Showing 26–50 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6879602 | Synchronizing method and bridge | Yasunori Maeshima | 2005-04-12 |
| 6876850 | Communication apparatus and communication method | Yasunori Maeshima, Shigeru Sugaya | 2005-04-05 |
| 6804209 | Wireless communication control method and wireless transmission apparatus | Shigeru Sugaya, Hidemasa Yoshida, Takanobu Kamo | 2004-10-12 |
| 6775464 | Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium | Akira Ogino, Takashi Usui | 2004-08-10 |
| 6693891 | Communication control method and transmission unit | Shigeru Sugaya | 2004-02-17 |
| 6564048 | Radio communication system and method and mobile communication terminal device | — | 2003-05-13 |
| 6545999 | Wireless communicating method, wireless communicating system, communicating station, and controlling station | — | 2003-04-08 |
| 6542495 | Wireless communicating method, wireless communicating system, communicating station, and controlling station | — | 2003-04-01 |
| 6542494 | Communication control method and transmission apparatus | Shigeru Sugaya, Hidemasa Yoshida, Takanobu Kamo | 2003-04-01 |
| 6515960 | Radio communication system | Takashi Usui, Hisaki Hiraiwa | 2003-02-04 |
| 6510183 | Method and apparatus for superimposing and detecting an additional information signal | Nozomu Ikeda, Akira Ogino, Takashi Usui | 2003-01-21 |
| 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 |
| 6430172 | Radio communication system, transmitting apparatus, radio communication control apparatus, receiving apparatus, and radio communication method | Takashi Usui, Hisaki Hiraiwa | 2002-08-06 |
| 6430158 | Wireless communication method, wireless communication apparatus and wireless communication control apparatus | — | 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 |
| 6330393 | Method and device for information anti-duplication | Takashi Usui, Akira Ogino | 2001-12-11 |
| 6266728 | Network system having a bridge that assigns identification numbers to buses connected as a tree and that reserves some identification numbers | Hisato Shima | 2001-07-24 |
| 6195129 | Video signal transmission device, video signal output device, video signal reception device, video signal duplication control system, information superimposing/extraction device, and image recording medium | Akira Ogino, Takashi Usui | 2001-02-27 |
| 6112008 | Duplication control system using two differently generated control signals superimposed on the information signal | Akira Ogino, Takashi Usui | 2000-08-29 |