H04N 21/4852
For modifying audio parameters
Official title: {for modifying audio parameters, e.g. switching between mono and stereo}
H04N21/4852 (For modifying audio parameters) appears on 619 US grants and 842 published applications in this corpus.
Search patents in H04N- Granted patents
- 619
- Published applications
- 842
- Assignees
- 215
- Inventors
- 1,457
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 3 |
| 2002 | 1 | 9 |
| 2003 | 3 | 6 |
| 2004 | 5 | 7 |
| 2005 | 3 | 11 |
| 2006 | 4 | 48 |
| 2007 | 4 | 15 |
| 2008 | 10 | 20 |
| 2009 | 4 | 22 |
| 2010 | 7 | 21 |
| 2011 | 13 | 23 |
| 2012 | 22 | 27 |
| 2013 | 11 | 28 |
| 2014 | 21 | 36 |
| 2015 | 32 | 53 |
| 2016 | 28 | 36 |
| 2017 | 39 | 46 |
| 2018 | 51 | 45 |
| 2019 | 41 | 36 |
| 2020 | 45 | 60 |
| 2021 | 48 | 52 |
| 2022 | 49 | 58 |
| 2023 | 48 | 49 |
| 2024 | 49 | 45 |
| 2025 | 36 | 45 |
| 2026 | 28 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intelligent media content playback22 Sep 2026US 12,744,968 B2AT&T Intellectual Property I, L. P.
- Display device for outputting audio25 Aug 2026US 12,717,541 B2LG Electronics Inc.
- Devices with enhanced audio25 Aug 2026US 12,717,543 B2Apple Inc.
- Multimedia device and control method therefor25 Aug 2026US 12,717,594 B2LG Electronics Inc.
- Dynamic audio volume leveling notification system18 Aug 2026US 12,712,511 B2Roku, Inc.
- System and method for system user interface on a dual screen television8 Oct 2026US 2026/0313188 A1Telly, Inc.
- Realtime wireless synchronization of live event audio stream with a video recording8 Oct 2026US 2026/0314022 A1Bygge Technologies Inc.
- System and method for reconfiguration of an entertainment system controlling device17 Sep 2026US 2026/0281490 A1Universal Electronics Inc.
- Automatic Audio Timing Advance For Lip Synchrony17 Sep 2026US 2026/0281491 A1Sonos, Inc.
- Focused Volume Control of Characters in a Stream10 Sep 2026US 2026/0267590 A1Comcast Cable Communications, LLC
Most cited
By later US patents
- Remote control device and method for using television schedule information452US 6,075,575 AStarsight Telecast, Inc. · 2000
- Global speech user interface415US 8,005,679 B2Promptu Systems Corporation · 2011
- Global speech user interface389US 7,324,947 B2Promptu Systems Corporation · 2008
- Music channel graphical user interface253US 6,230,322 B1Sony Corporation · 2001
- Web browser allowing navigation between hypertext objects using remote control212US 6,034,689 AWebTV Networks, Inc. · 2000