H04N 5/185
For the black level
Official title: {for the black level}
H04N5/185 (For the black level) appears on 104 US grants and 37 published applications in this corpus.
Search patents in H04N- Granted patents
- 104
- Published applications
- 37
- Assignees
- 60
- Inventors
- 165
- Latest grant
- 13 Apr 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 7 |
| 2005 | 1 | 6 |
| 2006 | 3 | 3 |
| 2007 | 6 | 5 |
| 2008 | 4 | 4 |
| 2009 | 3 | 2 |
| 2010 | 3 | 4 |
| 2011 | 1 | 0 |
| 2012 | 3 | 2 |
| 2013 | 5 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Two and three-dimensional near infrared subcutaneous structure imager using realtime nonlinear video processing13 Apr 2021US 10,977,776 B1The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Two and three dimensional near infrared subcutaneous structure imager using real time nonlinear video processing28 Aug 2018US 10,062,356 B1The United States of America as Represented by the Admin of National Aeronautics and Space Administration
- Endoscope apparatus which controls clamping of optical black included in an image pickup signal2 Feb 2016US 9,247,863 B2Olympus Corporation
- Image processing apparatus, image processing method and electronic camera27 Jan 2015US 8,941,760 B2Nikon Corporation
- Image signal processing device and solid-state imaging device17 Sep 2013US 8,537,254 B2Kabushiki Kaisha Toshiba
- Endoscope apparatus16 Oct 2014US 2014/0307073 A1Olympus Corporation
- Image signal processing device and solid-state imaging device14 Jun 2012US 2012/0147210 A1Kabushiki Kaisha Toshiba
- Image processing apparatus, image processing method and electronic camera22 Mar 2012US 2012/0069220 A1Nikon Corporation
- Display apparatus and method16 Dec 2010US 2010/0315397 A1Samsung Electronics Co., Ltd.
- Black level correction circuit and solid-state imaging device28 Oct 2010US 2010/0271514 A1Sony Corporation
Most cited
By later US patents
- CCD dark mean level correction circuit employing digital processing and analog subtraction requiring no advance knowledge of dark mean level85US 5,659,355 AEastman Kodak Company · 1997
- Video signals clamping circuit for maintaining DC level of video signals41US 5,341,218 AMitsubishi Denki Kabushiki Kaisha · 1994
- Clamp circuit with feed back37US 4,742,392 ACanon Kabushiki Kaisha · 1988
- Black level correction circuit for correcting black level of a video signal32US 4,811,101 APioneer Electronic Corporation · 1989
- Clamping circuit with offset compensation for analog-to-digital converters25US 5,371,552 ANorth American Philips Corporation · 1994