H04N 9/68
For controlling the amplitude of colour signals
Official title: for controlling the amplitude of colour signals, e.g. automatic chroma control circuits (H04N9/71, H04N9/73 take precedence; camera processing pipelines for controlling the colour saturation of colour signals H04N23/86)
H04N9/68 (For controlling the amplitude of colour signals) appears on 916 US grants and 761 published applications in this corpus.
Search patents in H04N- Granted patents
- 916
- Published applications
- 761
- Assignees
- 329
- Inventors
- 1,623
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 13 | 0 |
| 1988 | 10 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 18 | 0 |
| 1995 | 20 | 0 |
| 1996 | 19 | 0 |
| 1997 | 11 | 0 |
| 1998 | 14 | 0 |
| 1999 | 21 | 0 |
| 2000 | 24 | 0 |
| 2001 | 24 | 4 |
| 2002 | 17 | 25 |
| 2003 | 11 | 24 |
| 2004 | 14 | 14 |
| 2005 | 16 | 38 |
| 2006 | 22 | 43 |
| 2007 | 15 | 43 |
| 2008 | 28 | 38 |
| 2009 | 20 | 36 |
| 2010 | 20 | 28 |
| 2011 | 30 | 34 |
| 2012 | 37 | 21 |
| 2013 | 40 | 25 |
| 2014 | 21 | 27 |
| 2015 | 27 | 26 |
| 2016 | 27 | 43 |
| 2017 | 24 | 25 |
| 2018 | 25 | 40 |
| 2019 | 41 | 32 |
| 2020 | 40 | 33 |
| 2021 | 29 | 27 |
| 2022 | 25 | 17 |
| 2023 | 23 | 34 |
| 2024 | 33 | 35 |
| 2025 | 40 | 27 |
| 2026 | 24 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optimized color filter including a bounded total transmittance of light set by a target percentage for modifying the spectral response of a vision system6 Oct 2026US 12,756,807 B2UEA Enterprises Limited
- Scalable systems for controlling color management comprising varying levels of metadata29 Sep 2026US 12,750,508 B2
- Scalable systems for controlling color management comprising varying levels of metadata8 Sep 2026US 12,732,624 B2Dolby Laboratories Licensing Corporation
- Scalable systems for controlling color management comprising varying levels of metadata1 Sep 2026US 12,726,641 B2Dolby Laboratories Licensing Corporation
- Image signal processor supporting compensation operation for saturated pixel and method of operating the same25 Aug 2026US 12,718,338 B2Samsung Electronics Co., Ltd.
- Scalable systems for controlling color management comprising varying levels of metadata24 Sep 2026US 2026/0292223 A1Dolby Laboratories Licensing Corporation
- Scalable systems for controlling color management comprising varying levels of metadata24 Sep 2026US 2026/0292224 A1Dolby Laboratories Licensing Corporation
- Video transport within a mobile device20 Aug 2026US 2026/0244387 A1HYPHY USA Inc.
- Data processing method, apparatus, and system13 Aug 2026US 2026/0238795 A1Huawei Technologies Co., Ltd.
- Scalable systems for controlling color management comprising varying levels of metadata9 Jul 2026US 2026/0197472 A1Dolby Laboratories Licensing Corporation
Most cited
By later US patents
- Digital television system334US 5,526,051 ATexas Instruments Incorporated · 1996
- Selecting a transfer function for a display device173US 6,975,332 B2Adobe Systems Incorporated · 2005
- Integrated television and video cassette recorder system159US 5,940,572 ADaewoo Electronics Co., Ltd. · 1999
- System for automatic color calibration156US 6,459,425 B12002
- Serial digital video processing with concurrent adjustment in RGB and luminance/color difference123US 5,737,032 AVideotek, Inc. · 1998