Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093843 | Digital communicationn system using partial response and bipolar coding techniques | Hiroshi Shimizu, Yasuhiro Tsujimura, Toshihisa Yoshida | 1992-03-03 |
| 4893265 | Rate conversion digital filter | — | 1990-01-09 |
| 4803680 | Destuffing circuit with a digital phase-locked loop | Yoshinori Rokugo | 1989-02-07 |
| 4661945 | Differential coding system and apparatus therefor | — | 1987-04-28 |
| 4642575 | Phase-locked loop with supplemental phase signal | Takashi Kuriyama | 1987-02-10 |
| 4639939 | Apparatus for cancelling periodic carrier phase jitters | Osamu Tanaka | 1987-01-27 |
| 4621355 | Method of synchronizing parallel channels of orthogonally multiplexed parallel data transmission system and improved automatic equalizer for use in such a transmission system | Hidehito Aoyagi | 1986-11-04 |
| 4613975 | Selective fading protection system | Hidehito Aoyagi | 1986-09-23 |
| 4604583 | Frequency offset correcting circuit | Hidehito Aoyagi | 1986-08-05 |
| 4575682 | Circuit for establishing accurate sample timing | Hidehito Aoyagi | 1986-03-11 |
| 4541104 | Framing circuit for digital system | — | 1985-09-10 |
| 4423518 | Timing recovery circuit | — | 1983-12-27 |
| 4392220 | Modem to be coupled to a directional transmission line of an SS multiplex communication network | Satoshi Hasegawa | 1983-07-05 |
| 4300229 | Transmitter and receiver for an othogonally multiplexed QAM signal of a sampling rate N times that of PAM signals, comprising an N/2-point offset fourier transform processor | — | 1981-11-10 |