Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5959695 | 2-line YC separation device | Hiroko Sugimoto, Nobuo Taketani | 1999-09-28 |
| 5920351 | Black level detecting circuit of video signal | Masahiro Takeshima | 1999-07-06 |
| 5841486 | Compensation voltage generating apparatus for multipicture display and video display including the same | Hiroshi Ando | 1998-11-24 |
| 5760840 | Apparatus for distinguishing between a plurality of video signal types, apparatus for automatic aspect ratio determination and television receiver | Masahiro Tani, Naoji Okumura | 1998-06-02 |
| 5748257 | Picture information detecting apparatus for a video signal | Minoru Kawabata | 1998-05-05 |
| 5502508 | Gradation compensating apparatus for a video signal | Minoru Kawabata | 1996-03-26 |
| 5485223 | Noise reducing apparatus | Kazunari Yamaguchi | 1996-01-16 |
| 5416533 | Apparatus for correcting a black level of a video signal | — | 1995-05-16 |
| 5396300 | Contrast correction device for correcting video signal contrast by varying luminance signal | — | 1995-03-07 |
| 5351141 | Video signal correction system | Toshiaki Tsuji | 1994-09-27 |
| 5294986 | Video signal gradation corrector which prevents excessive extension of the dynamic range | Toshiaki Tsuji | 1994-03-15 |
| 5289282 | Video signal gradation corrector | Toshiaki Tsuji, Kiyoshi Imai | 1994-02-22 |
| 5262862 | Black level compensation circuit for a luminance signal | Hideaki Sadamatsu | 1993-11-16 |
| 5255079 | Apparatus for correcting a color tone of a video signal | — | 1993-10-19 |
| 5241386 | Video signal gradation corrector providing smooth correction while avoiding oscillation of a corrected output luminance signal due to noise and achieving fast response to sudden video scene changes | Toshiaki Tsuji | 1993-08-31 |
| 5239378 | Gradation corrector with improved smoothing, signal-to-noise ratio and fast response time | Toshiaki Tsuji | 1993-08-24 |
| 5223927 | Image signal average picture level detecting apparatus | Hideaki Sadamatsu | 1993-06-29 |
| 5212545 | Apparatus for correcting a black level of a video signal | — | 1993-05-18 |
| 5200824 | Luminance signal noise suppressor | — | 1993-04-06 |
| 5196937 | Contrast correction device for correcting video signal contrast by varying luminance signal | — | 1993-03-23 |
| 5177600 | Noise reduction circuit | Hiroki Monta, Kiyoshi Imai | 1993-01-05 |
| 5140649 | Gradation correcting apparatus for correcting luminance signal in accordance with detected color signal | — | 1992-08-18 |