H04N 9/80
Transformation of the television signal for recording
Official title: Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
H04N9/80 (Transformation of the television signal for recording) appears on 11,048 US grants and 11,000 published applications in this corpus.
Search patents in H04N- Granted patents
- 11,048
- Published applications
- 11,000
- Assignees
- 1,585
- Inventors
- 13,846
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 23 | 0 |
| 1978 | 24 | 0 |
| 1979 | 16 | 0 |
| 1980 | 21 | 0 |
| 1981 | 23 | 0 |
| 1982 | 16 | 0 |
| 1983 | 28 | 0 |
| 1984 | 44 | 0 |
| 1985 | 37 | 0 |
| 1986 | 49 | 0 |
| 1987 | 78 | 0 |
| 1988 | 85 | 0 |
| 1989 | 95 | 0 |
| 1990 | 49 | 0 |
| 1991 | 72 | 0 |
| 1992 | 93 | 0 |
| 1993 | 103 | 0 |
| 1994 | 103 | 0 |
| 1995 | 138 | 0 |
| 1996 | 186 | 0 |
| 1997 | 176 | 0 |
| 1998 | 285 | 0 |
| 1999 | 241 | 0 |
| 2000 | 247 | 0 |
| 2001 | 244 | 199 |
| 2002 | 293 | 563 |
| 2003 | 257 | 523 |
| 2004 | 284 | 700 |
| 2005 | 247 | 803 |
| 2006 | 355 | 919 |
| 2007 | 388 | 843 |
| 2008 | 412 | 848 |
| 2009 | 466 | 771 |
| 2010 | 597 | 623 |
| 2011 | 666 | 666 |
| 2012 | 698 | 513 |
| 2013 | 737 | 387 |
| 2014 | 631 | 416 |
| 2015 | 425 | 382 |
| 2016 | 352 | 352 |
| 2017 | 322 | 329 |
| 2018 | 291 | 247 |
| 2019 | 270 | 192 |
| 2020 | 216 | 159 |
| 2021 | 165 | 148 |
| 2022 | 134 | 138 |
| 2023 | 110 | 112 |
| 2024 | 107 | 85 |
| 2025 | 79 | 53 |
| 2026 | 40 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 9/804Involving pulse code modulation of the colour picture signal components7,304
- H04N 9/82The individual colour picture signal components being recorded simultaneously only6,315
- H04N 9/802Involving processing of the sound signal505
- H04N 9/808Involving pulse code modulation of the composite colour video-signal185
- H04N 9/81The individual colour picture signal components being recorded sequentially only136
- H04N 9/86The individual colour picture signal components being recorded sequentially and simultaneously87
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