H04N 21/233
Processing of audio elementary streams
Official title: Processing of audio elementary streams {(monitoring, identification or recognition of audio in broadcast systems H04H60/58)}
H04N21/233 (Processing of audio elementary streams) appears on 1,665 US grants and 1,939 published applications in this corpus.
Search patents in H04N- Granted patents
- 1,665
- Published applications
- 1,939
- Assignees
- 590
- Inventors
- 3,190
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 10 |
| 2002 | 2 | 11 |
| 2003 | 3 | 42 |
| 2004 | 10 | 20 |
| 2005 | 8 | 27 |
| 2006 | 13 | 56 |
| 2007 | 9 | 33 |
| 2008 | 12 | 18 |
| 2009 | 10 | 30 |
| 2010 | 24 | 33 |
| 2011 | 21 | 53 |
| 2012 | 28 | 54 |
| 2013 | 39 | 43 |
| 2014 | 65 | 83 |
| 2015 | 78 | 102 |
| 2016 | 96 | 113 |
| 2017 | 106 | 155 |
| 2018 | 107 | 123 |
| 2019 | 134 | 126 |
| 2020 | 150 | 147 |
| 2021 | 140 | 147 |
| 2022 | 141 | 156 |
| 2023 | 146 | 99 |
| 2024 | 122 | 113 |
| 2025 | 111 | 78 |
| 2026 | 56 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for just in time transcoding of video on demand29 Sep 2026US 12,750,536 B2Qumu Corporation
- Interaction method and apparatus, electronic device, storage medium, and program product29 Sep 2026US 12,750,548 B2Beijing Zitiao Network Technology Co., Ltd.
- Method of signaling an audio stream properties descriptor, device for signaling an audio stream properties descriptor, and device for receiving an audio stream properties descriptor25 Aug 2026US 12,718,794 B2Sharp Kabushiki Kaisha
- Attention based audio experience in streaming of live events25 Aug 2026US 12,720,130 B2Adeia Guides Inc.
- Systems and methods for automated extraction of closed captions in real time or near real-time and tagging of streaming data for advertisements25 Aug 2026US 12,720,139 B2Crossbar Media Group, Inc
- Method and server for providing media content8 Oct 2026US 2026/0313196 A1Samsung Electronics Co., Ltd.
- Engagement prediction network based on video content1 Oct 2026US 2026/0303889 A1Snap Inc.
- Content System with Sentiment-Based Content Modification Feature24 Sep 2026US 2026/0290400 A1Roku, Inc.
- Dubbing generation system and method to which voice technology based on linguistics and cognitive science is applied using artificial intelligence17 Sep 2026US 2026/0281469 A1Aunionai Co. Ltd.
- Methods and apparatus for affiliate interrupt detection17 Sep 2026US 2026/0281477 A1The Nielsen Company (US), LLC
Most cited
By later US patents
- Multimedia server1,367US 6,301,604 B1Matsushita Electric Industrial Co., Ltd. · 2001
- Client server based interactive television program guide system with remote server recording995US 7,761,892 B2United Video Properties, Inc. · 2010
- Audio and video transmission and receiving system941US 5,132,992 A1992
- Audio and video transmission and receiving system533US 5,253,275 A1993
- Audio and video transmission and receiving system508US 6,002,720 AH. Lee Browne, D/B/A Greenwich Information Technologies LLC · 1999