Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7990822 | Sound recording/reproducing method and apparatus | Katsuaki Tanaka | 2011-08-02 |
| 7769476 | Data reproducing system and data streaming system | Tetsuya Matsuyama, Masatoshi Kawashima, Hiroaki Furuta, Katsuaki Tanaka, Yasuhiro Matsunuma | 2010-08-03 |
| 7224811 | Audio system utilizing personal computer | Hiromi Imura, Shuichi Esaki | 2007-05-29 |
| 7092331 | Reproduction of audio data from recording medium | Kazunobu Fujiwara, Tadashi Sugiyama | 2006-08-15 |
| 6118344 | Frequency control apparatus and method and storage medium storing a program for carrying out the method | Masafumi Toshitani, Kinya Inoue, Hiromi Imura, Hitoshi Koseki, Shuichi Esaki | 2000-09-12 |
| 5863206 | Apparatus for reproducing video, audio, and accompanying characters and method of manufacture | Yoshikatsu Matsubara | 1999-01-26 |
| 5412628 | Apparatus for intermittently recording and reproducing a signal on a disc type recording medium | Shohei Yamazaki, Kazuhiko Honda | 1995-05-02 |
| 5200750 | Digital-to-analog converter with noise-free sigma-delta modulation | Tatsuo Fushiki | 1993-04-06 |
| 5031052 | Color phase correction circuit | — | 1991-07-09 |
| 4947264 | Synchronizing circuit for a video disc playback device | — | 1990-08-07 |
| 4908812 | Synchronizing signal reproducing circuit in a disc playback device | Shinzi Aoshima | 1990-03-13 |
| 4907072 | Mosaic picture generation circuit | — | 1990-03-06 |
| 4823203 | Rotation speed detection circuit in a video disc playback device for detecting a state in which the rotation speed is double a normal speed | — | 1989-04-18 |
| 4815063 | Disc motor control circuit for controlling the rotation of a disc in a disc playing device | Shinzi Aoshima | 1989-03-21 |
| 4792852 | Vertical synchronizing signal detection circuit | — | 1988-12-20 |
| 4707805 | Data processing circuit for digital audio system | Norio Tomisawa | 1987-11-17 |
| 4646303 | Data error detection and correction circuit | Norio Tomisawa | 1987-02-24 |