H04N 9/78
For separating the brightness signal or the chrominance signal from the colour
Official title: for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
H04N9/78 (For separating the brightness signal or the chrominance signal from the colour) appears on 524 US grants and 224 published applications in this corpus.
Search patents in H04N- Granted patents
- 524
- Published applications
- 224
- Assignees
- 182
- Inventors
- 736
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 8 | 0 |
| 1980 | 10 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 12 | 0 |
| 1985 | 13 | 0 |
| 1986 | 14 | 0 |
| 1987 | 22 | 0 |
| 1988 | 11 | 0 |
| 1989 | 19 | 0 |
| 1990 | 14 | 0 |
| 1991 | 22 | 0 |
| 1992 | 21 | 0 |
| 1993 | 20 | 0 |
| 1994 | 19 | 0 |
| 1995 | 17 | 0 |
| 1996 | 19 | 0 |
| 1997 | 10 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 13 | 2 |
| 2002 | 6 | 7 |
| 2003 | 3 | 6 |
| 2004 | 9 | 16 |
| 2005 | 7 | 20 |
| 2006 | 11 | 33 |
| 2007 | 13 | 14 |
| 2008 | 25 | 20 |
| 2009 | 16 | 21 |
| 2010 | 14 | 11 |
| 2011 | 10 | 8 |
| 2012 | 24 | 1 |
| 2013 | 11 | 5 |
| 2014 | 8 | 4 |
| 2015 | 4 | 4 |
| 2016 | 6 | 4 |
| 2017 | 6 | 5 |
| 2018 | 2 | 6 |
| 2019 | 3 | 11 |
| 2020 | 10 | 3 |
| 2021 | 5 | 5 |
| 2022 | 4 | 4 |
| 2023 | 2 | 4 |
| 2024 | 2 | 2 |
| 2025 | 3 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Systems and methods of processing image data from an entropy decoder14 May 2026US 2026/0136017 A1QUALCOMM Incorporated
- Video signal transmitting device, video signal repeating device, and video signal transmitting/receiving system24 Jul 2025US 2025/0240395 A1Rohm Co., Ltd.
- Apparatuses, systems, and methods for managing auto-exposure of image frames depicting color-biased content26 Jun 2025US 2025/0211865 A1Intuitive Surgical Operations, Inc.
Most cited
By later US patents
- Trick play data indentification methods and apparatus for use with digital video recording and playback devices76US 5,687,275 AHitachi America, Ltd. · 1997
- Comb filter for television signals having adaptive features58US 4,050,084 ACBS Inc. · 1977
- Color separator for digital television52US 5,347,321 ATexas Instruments Incorporated · 1994
- Adaptive frame comb filter system50US 4,617,589 ARCA Corporation · 1986
- Circuit for automatically adjusting signal separation in Y/C seperation comb filter48US 5,523,798 AKabushiki Kaisha Toshiba · 1996