H04N 21/4382
Demodulation or channel decoding
Official title: {Demodulation or channel decoding, e.g. QPSK demodulation (analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002)}
H04N21/4382 (Demodulation or channel decoding) appears on 2,151 US grants and 2,068 published applications in this corpus.
Search patents in H04N- Granted patents
- 2,151
- Published applications
- 2,068
- Assignees
- 446
- Inventors
- 2,354
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 23 | 0 |
| 1996 | 36 | 0 |
| 1997 | 25 | 0 |
| 1998 | 38 | 0 |
| 1999 | 35 | 0 |
| 2000 | 35 | 0 |
| 2001 | 48 | 21 |
| 2002 | 41 | 78 |
| 2003 | 41 | 64 |
| 2004 | 36 | 68 |
| 2005 | 30 | 88 |
| 2006 | 63 | 97 |
| 2007 | 51 | 166 |
| 2008 | 64 | 167 |
| 2009 | 78 | 247 |
| 2010 | 125 | 167 |
| 2011 | 164 | 115 |
| 2012 | 173 | 95 |
| 2013 | 183 | 100 |
| 2014 | 170 | 101 |
| 2015 | 129 | 106 |
| 2016 | 94 | 101 |
| 2017 | 99 | 72 |
| 2018 | 84 | 54 |
| 2019 | 55 | 34 |
| 2020 | 49 | 31 |
| 2021 | 33 | 22 |
| 2022 | 31 | 31 |
| 2023 | 30 | 22 |
| 2024 | 21 | 12 |
| 2025 | 10 | 5 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Broadcast translator for receiving off-air RF signals and retransmitting RF signals17 Mar 2026US 12,581,151 B2Anywave Broadcast Inc.
- Coding and decoding of interleaved image data6 Jan 2026US 12,519,977 B2Dolby Laboratories Licensing Corporation
- Video transmission system, transmission apparatus, display apparatus, video transmission method, and recording medium30 Sep 2025US 12,432,424 B2Panasonic Intellectual Property Management Co., Ltd.
- Systems and methods for enhanced multimedia signal broadcast, reception, data delivery, and data collection12 Aug 2025US 12,389,052 B2Board of Trustees of Michigan State University
- Synchronizing playback of audio information received from other networks3 Jun 2025US 12,321,662 B2Sonos, Inc.
- Transmission device, transmission method, reception device, reception method, display device, and display method25 Jun 2026US 2026/0181194 A1Sony Group Corporation
- Electronic device and method for transmitting data thereof5 Mar 2026US 2026/0067027 A1Samsung Electronics Co., Ltd.
- Synchronizing Playback of Audio Information Received from Other Networks22 Jan 2026US 2026/0023523 A1Sonos, Inc.
- Noise detection and localization8 Jan 2026US 2026/0012257 A1Promptlink Communications, Inc.
- Custom data indicating nominal range of samples of media content14 Aug 2025US 2025/0260851 A1Microsoft Technology Licensing, LLC
Most cited
By later US patents
- Signal processing appparatus and methods797US 5,335,277 AThe Personalized Mass Media Corporation · 1994
- Signal processing apparatus and methods615US 4,965,825 AThe Personalized Mass Media Corporation · 1990
- Audio/video transceiver apparatus including compression means497US 4,963,995 AExplore Technology, Inc. · 1990
- Audio/video transceiver apparatus including compression means, random access storage means, and microwave transceiver means481US 5,057,932 AExplore Technology, Inc. · 1991
- Signal processing apparatus and methods470US 5,233,654 AThe Personalized Mass Media Corporation · 1993