Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7283491 | Communication system and method capable of broadcasting by using terrestrial and satellite communication networks | — | 2007-10-16 |
| 7155160 | Satellite communications data distribution system capable of providing a lot of data in response to a user's request | — | 2006-12-26 |
| 7002945 | FDM-CDMA transmitting method, FDM-CDMA receiving method, FDM-CDMA transmitting device and FDM-CDMA receiving device | — | 2006-02-21 |
| 6014366 | Variable-bandwidth frequency division multiplex communication system | — | 2000-01-11 |
| 6009313 | Radio Communication device capable of setting a frequency channel with a small frequency step | — | 1999-12-28 |
| 5991280 | Method and system for controlling TDMA timing in satellite communication network | — | 1999-11-23 |
| 5867792 | Radio communication system | — | 1999-02-02 |
| 5699383 | High-power linear amplification using periodically updated amplitude and phase correction values | — | 1997-12-16 |
| 5526348 | Area radio communication with radio channels divided into channel groups | — | 1996-06-11 |
| 5357447 | Rate conversion apparatus | — | 1994-10-18 |
| 5351014 | Voltage control oscillator which suppresses phase noise caused by internal noise of the oscillator | — | 1994-09-27 |
| 5311555 | Phase divider for complex signals | — | 1994-05-10 |
| 5291144 | Phase-locked circuit capable of being quickly put in a phase-locked state | — | 1994-03-01 |
| 5281974 | Antenna device capable of reducing a phase noise | Akio Kuramoto, Toshinobu Yamane, Kazuo Kosukegawa | 1994-01-25 |
| 5270665 | Demodulator for continuously and accurately carrying out demodulating operation by a frequency multiplication method | — | 1993-12-14 |
| 5268647 | Method and arrangement of coherently demodulating PSK signals using a feedback loop including a filter bank | — | 1993-12-07 |
| 5173663 | Demodulation circuit enabling independent recovery of the carrier and sampling timing | — | 1992-12-22 |
| 5119037 | High speed phase-lock loop device | — | 1992-06-02 |
| 4914735 | Propagation time detecting system with use of detected phase difference of transmitted and received subcarrier | — | 1990-04-03 |
| 4905221 | Earth station capable of effectively using a frequency band of a satellite | — | 1990-02-27 |
| 4901310 | Mobile satellite communication system | — | 1990-02-13 |
| 4879713 | Satellite-based vehicle communication/position determination system | — | 1989-11-07 |
| 4833696 | System for controlling operation mode of modulator/demodulator | — | 1989-05-23 |
| 4785447 | FDM demultiplexer using oversampled digital filters | — | 1988-11-15 |
| 4759013 | FDM-TDM transmultiplexing system | — | 1988-07-19 |