Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12261686 | Control apparatus, OAM mode-multiplexing transmitting apparatus, OAM mode-multiplexing receiving apparatus, control method, and non-transitory computer readable medium | — | 2025-03-25 |
| 11929865 | Signal modulation apparatus and signal modulation method | Xinyue Liu, Izzat Darwazeh, Nader Zein | 2024-03-12 |
| 11438032 | OAM reception apparatus, OAM reception method, and OAM transmission system | Ryuji Zenkyu | 2022-09-06 |
| 11362440 | Antenna device, wireless transmitter, wireless receiver, and wireless communication system | Ryuji Zenkyu | 2022-06-14 |
| 11290154 | Control device, delay difference adjustment method, and non-transitory computer readable medium for storing delay difference adjustment program | Ryuji Zenkyu | 2022-03-29 |
| 11159211 | Radio transmission device, baseband processing device, radio transmission method, and radio reception device | Ryuji Zenkyu | 2021-10-26 |
| 10998948 | OAM reception apparatus, OAM reception method, and OAM transmission system | Ryuji Zenkyu | 2021-05-04 |
| 10763973 | Phase noise compensation apparatus, demodulation apparatus, communication apparatus, communication system, and phase noise compensation method | Norifumi Kamiya | 2020-09-01 |
| 9876668 | Communication apparatus, demodulation apparatus, carrier reproduction apparatus, phase error compensation apparatus, phase error compensation method, and storage medium on which phase error compensation program has been stored | Norifumi Kamiya | 2018-01-23 |
| 9136979 | Carrier wave reproduction device and carrier wave reproduction method | Norifumi Kamiya | 2015-09-15 |
| 8958492 | Data transmission method, data reception method, data modulation device, data demodulation device | Norifumi Kamiya | 2015-02-17 |
| 8787478 | Wireless communication system, receiving apparatus, transmitting apparatus, wireless communication method, receiving method, and transmitting method | — | 2014-07-22 |
| 8675778 | Carrier recovery circuit and demodulation circuit under quasi-coherent detection method | Hirotaka Sato | 2014-03-18 |
| 8675771 | Log likelihood ratio arithmetic circuit, transmission apparatus, log likelihood ratio arithmetic method, and program | — | 2014-03-18 |
| 8527847 | Channel switching signal generating circuit and channel switching signal generating method | — | 2013-09-03 |
| 8229022 | Modulation and demodulation method, modulation apparatus and demodulation apparatus | Seiichi Noda | 2012-07-24 |
| 8086259 | Radio communication apparatus, radio communication system and radio communication method | Kazuhito Souma | 2011-12-27 |
| 6624691 | Demodulator for processing digital signal | — | 2003-09-23 |
| 6570441 | Incoherent demodulator and method of incoherently demodulating an IF signal | — | 2003-05-27 |
| 6512473 | Clock synchronizing circuit | — | 2003-01-28 |
| 6411658 | Demodulation device | — | 2002-06-25 |
| 6127897 | Zero-crossing detection type clock recovery circuit operated at symbol rate | — | 2000-10-03 |
| 6121828 | Demodulator | — | 2000-09-19 |
| 5912827 | Digital filter with low rolloff factor | — | 1999-06-15 |
| 5825828 | Method and apparatus for multi-level quadrature amplitude modulation | — | 1998-10-20 |