Issued Patents All Time
Showing 51–73 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6101381 | Telecommunication system, radio base station thereof, and portable telecommunication terminal thereof | Mie Tajima, Junichi Nakata | 2000-08-08 |
| 6101051 | Information recording and updating method, information recording and updating apparatus, recording medium initializing apparatus and recording medium | Akira Ogino, Takashi Usui | 2000-08-08 |
| 6075778 | Radio communication system, method of radio communication for information provision service, and mobile radio station | — | 2000-06-13 |
| 6058243 | Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium | Akira Ogino, Takashi Usui | 2000-05-02 |
| 6041124 | Radio communication system and method and mobile communication terminal device | — | 2000-03-21 |
| 6023551 | Information signal reproduction control system | Akira Ogino, Takashi Usui | 2000-02-08 |
| 6021010 | Recording method and apparatus for digital signals in which lower order bits are separated into upper and lower side bits and separately recorded | Mie Tajima, Junichi Nakata | 2000-02-01 |
| 5953366 | Receiving apparatus, receiving method, and terminal unit for use with radio system | Tetsuya Naruse | 1999-09-14 |
| 5910964 | Code detection apparatus | — | 1999-06-08 |
| 5862172 | Spread spectrum communication system and its transmitter and receiver | Junichi Nakata | 1999-01-19 |
| 5852767 | Radio communication system and communication terminal equipments thereof | — | 1998-12-22 |
| 5835488 | Pseudo random noise sequence code generator and CDMA radio communication terminal | — | 1998-11-10 |
| 5812543 | Mobile communication method and system | — | 1998-09-22 |
| 5757766 | Transmitter and receiver for orthogonal frequency division multiplexing signal | — | 1998-05-26 |
| 5745521 | Spread spectrum communication apparatus and signal intensity detection apparatus | — | 1998-04-28 |
| 5708658 | Communication terminal | — | 1998-01-13 |
| 5699380 | Spread spectrum communication terminal apparatus in CDMA cellular telephone system | — | 1997-12-16 |
| 5686869 | Pulse-width modulating device | Tetsuya Naruse, Tomoya Yamaura | 1997-11-11 |
| 5644590 | Spread spectrum communication apparatus and signal intensity detection apparatus | — | 1997-07-01 |
| 5438596 | Method and apparatus for generating diffusion code | — | 1995-08-01 |
| 4683586 | Scrambling system for an audio frequency signal | Akira Sakamoto, Takeshi Fukami, Masakatsu Toyoshima | 1987-07-28 |
| 4612627 | Digital signal composing circuit for cross-fade signal processing | Akira Sakamoto, Takeshi Fukami, Michimasa Komatsubara, Akira Shimizu | 1986-09-16 |
| 4598169 | System for detecting a marker signal inserted in an information signal | Michimasa Komatsubara, Takeshi Fukami, Akira Sakamoto, Toshiya Miyata | 1986-07-01 |