H04N 7/171
Systems operating in the amplitude domain of the television signal
H04N7/171 (Systems operating in the amplitude domain of the television signal) appears on 211 US grants and 18 published applications in this corpus.
Search patents in H04N- Granted patents
- 211
- Published applications
- 18
- Assignees
- 85
- Inventors
- 273
- Latest grant
- 23 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 18 | 0 |
| 1987 | 21 | 0 |
| 1988 | 7 | 0 |
| 1989 | 11 | 0 |
| 1990 | 11 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 4 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Control device, medical observation system, control method, and computer readable recording medium23 Jan 2024US 11,882,377 B2Sony Olympus Medical Solutions Inc.
- Secure control and operation of drones6 Jul 2021US 11,056,009 B2Performance Drone Works LLC
- Method of transmission of a digital content stream and corresponding method of reception29 Mar 2016US 9,300,709 B2Thomson Licensing
- System, method, and computer program product for inverting a polarity of each cell of a display device28 Jul 2015US 9,094,678 B1NVIDIA Corporation
- Digital processing disruption systems16 Sep 2014US 8,837,909 B2DCS Copy Protection Limited
- Control device, medical observation system, control method, and computer readable recording medium11 Aug 2022US 2022/0256125 A1Sony Olympus Medical Solutions Inc.
- Secure control and operation of drones1 Aug 2019US 2019/0236962 A1Drone Racing League, Inc.
- Signal modification via media guidance application data and/or metadata21 Jun 2012US 2012/0159534 A1Rovi Technologies Corporation
- Digital Processing Disruption Systems12 Apr 2012US 2012/0086854 A1DCS Copy Protection Limited
- Encrypted signal detection circuit and video device using the same11 Aug 2011US 2011/0194689 A1Hon Hai Precision Industry Co., Ltd.
Most cited
By later US patents
- Method and apparatus for providing on demand services in a subscriber system323US 5,631,693 AAntec Corporation · 1997
- Digitally-controlled analog encrypton239US 4,389,671 AHarris Corporation · 1983
- Scrambling and unscrambling video signals in a pay TV system224US 4,390,898 ANorthern Telecom Limited · 1983
- Subscriber-limited reception television broadcast security encoder-decoder system192US 4,215,366 AFeature Film Services · 1980
- Digital data cryptographic system187US 5,406,627 ANEC Home Electronics Ltd. · 1995