H04N 9/79
Processing of colour television signals in connection with recording
H04N9/79 (Processing of colour television signals in connection with recording) appears on 13,310 US grants and 12,798 published applications in this corpus.
Search patents in H04N- Granted patents
- 13,310
- Published applications
- 12,798
- Assignees
- 1,876
- Inventors
- 16,116
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 50 | 0 |
| 1977 | 49 | 0 |
| 1978 | 41 | 0 |
| 1979 | 23 | 0 |
| 1980 | 38 | 0 |
| 1981 | 49 | 0 |
| 1982 | 44 | 0 |
| 1983 | 51 | 0 |
| 1984 | 68 | 0 |
| 1985 | 65 | 0 |
| 1986 | 81 | 0 |
| 1987 | 121 | 0 |
| 1988 | 123 | 0 |
| 1989 | 136 | 0 |
| 1990 | 85 | 0 |
| 1991 | 109 | 0 |
| 1992 | 145 | 0 |
| 1993 | 137 | 0 |
| 1994 | 145 | 0 |
| 1995 | 181 | 0 |
| 1996 | 224 | 0 |
| 1997 | 201 | 0 |
| 1998 | 311 | 0 |
| 1999 | 257 | 0 |
| 2000 | 266 | 0 |
| 2001 | 272 | 210 |
| 2002 | 306 | 593 |
| 2003 | 275 | 560 |
| 2004 | 300 | 732 |
| 2005 | 259 | 849 |
| 2006 | 376 | 979 |
| 2007 | 409 | 913 |
| 2008 | 435 | 921 |
| 2009 | 499 | 827 |
| 2010 | 623 | 693 |
| 2011 | 703 | 749 |
| 2012 | 757 | 582 |
| 2013 | 844 | 624 |
| 2014 | 756 | 633 |
| 2015 | 590 | 495 |
| 2016 | 501 | 475 |
| 2017 | 448 | 408 |
| 2018 | 406 | 327 |
| 2019 | 369 | 269 |
| 2020 | 308 | 241 |
| 2021 | 248 | 202 |
| 2022 | 190 | 177 |
| 2023 | 150 | 141 |
| 2024 | 137 | 101 |
| 2025 | 98 | 63 |
| 2026 | 51 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 9/80Transformation of the television signal for recording11,048
- H04N 9/87Regeneration of colour television signals2,550
- H04N 9/7921For more than one processing mode1,774
- H04N 9/797For recording the signal in a plurality of channels, the bandwidth of369
- H04N 9/7904Using intermediate digital signal processing142
- H04N 9/7908Suppression of interfering signals at the reproducing side137
- H04N 9/793For controlling the level of the chrominance signal132
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Most cited
By later US patents
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- Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels1,021US 5,943,422 AIntertrust Technologies Corporation · 1999
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