H04N 9/72
For reinsertion of dc and slowly varying components of colour signals
Official title: for reinsertion of DC and slowly varying components of colour signals (camera processing pipelines for reinsertion of DC or slowly varying components of colour signals H04N23/87)
H04N9/72 (For reinsertion of dc and slowly varying components of colour signals) appears on 123 US grants and 21 published applications in this corpus.
Search patents in H04N- Granted patents
- 123
- Published applications
- 21
- Assignees
- 45
- Inventors
- 166
- Latest grant
- 21 Jan 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 8 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 1 |
| 2005 | 3 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 5 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 4 | 1 |
| 2013 | 4 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for DC restoration using feedback21 Jan 2014US 8,634,028 B2RGB Systems, Inc.
- Method and circuit for correcting signals and image correcting method and circuit using the same8 Oct 2013US 8,553,974 B2Novatek Microelectronics Corp.
- Multi-directional comb filtering in a digital video decoder1 Oct 2013US 8,548,066 B2WZ Technology Inc.
- Controlling device of a liquid crystal display26 Feb 2013US 8,385,724 B2Novatek Microelectronics Corp.
- Multi-directional comb filtering in a digital video decoder29 Jan 2013US 8,363,734 B2Huaya Microelectronics, Ltd.
- Electronic Device with Motion Based Color Correction24 Oct 2024US 2024/0357069 A1Apple Inc.
- Multi-Directional Comb Filtering in a Digital Video Decoder20 Jun 2013US 2013/0155328 A1Huaya Microelectronics, Ltd.
- Method and apparatus for dc restoration using feedback2 Aug 2012US 2012/0194746 A1RGB Systems, Inc.
- Method and apparatus for dc restoration using feedback24 Mar 2011US 2011/0069236 A1RGB Systems, Inc.
- Digital Video Decoder Architecture16 Jul 2009US 2009/0180027 A1Huaya Microelectronics, Ltd.
Most cited
By later US patents
- Signal level correction circuit for a video signal39US 5,142,354 AFuji Photo Optical Co., Ltd. · 1992
- Projection type image display apparatus with circuit for correcting luminance nonuniformity33US 5,838,396 AMatsushita Electric Industrial Co., Ltd. · 1998
- Automatic kinescope biasing system31US 4,263,622 ARCA Corporation · 1981
- Clamping circuit with offset compensation for analog-to-digital converters25US 5,371,552 ANorth American Philips Corporation · 1994
- Stabilization network for a cathode ray tube19US 4,370,674 AZenith Radio Corporation · 1983