H04N 21/4394
Involving operations for analysing the audio stream
Official title: {involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams (arrangements characterised by components specially adapted for monitoring, identification or recognition of audio in broadcast systems H04H60/58)}
H04N21/4394 (Involving operations for analysing the audio stream) appears on 2,279 US grants and 2,808 published applications in this corpus.
Search patents in H04N- Granted patents
- 2,279
- Published applications
- 2,808
- Assignees
- 608
- Inventors
- 4,163
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 10 | 3 |
| 2002 | 6 | 21 |
| 2003 | 8 | 33 |
| 2004 | 16 | 36 |
| 2005 | 5 | 28 |
| 2006 | 16 | 43 |
| 2007 | 18 | 67 |
| 2008 | 15 | 48 |
| 2009 | 15 | 60 |
| 2010 | 31 | 64 |
| 2011 | 38 | 65 |
| 2012 | 50 | 54 |
| 2013 | 62 | 122 |
| 2014 | 103 | 158 |
| 2015 | 96 | 143 |
| 2016 | 135 | 154 |
| 2017 | 176 | 179 |
| 2018 | 169 | 152 |
| 2019 | 161 | 153 |
| 2020 | 144 | 182 |
| 2021 | 175 | 201 |
| 2022 | 165 | 196 |
| 2023 | 214 | 217 |
| 2024 | 201 | 184 |
| 2025 | 160 | 130 |
| 2026 | 78 | 115 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Use of doppler shift as a basis to determine area of focus6 Oct 2026US 12,756,895 B2The Nielsen Company (US), LLC
- Methods and apparatus to detect a presence status6 Oct 2026US 12,756,897 B2The Nielsen Company (US), LLC
- Systems and methods for classification and delivery of content22 Sep 2026US 12,744,962 B2Comcast Cable Communications, LLC
- Systems and methods to handle queries comprising a media quote1 Sep 2026US 12,726,674 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
- Leveraging Audio Matches to Improve Visual Matching Recall Between Video Content Items8 Oct 2026US 2026/0313192 A1Google Inc.
- Methods and apparatus to identify an episode number based on fingerprint and matched viewing information8 Oct 2026US 2026/0313195 A1The Nielsen Company (US), LLC
- Systems and methods for providing a contextual menu with information related to an emergency alert8 Oct 2026US 2026/0313205 A1Adeia Guides Inc.
- Methods, apparatus, and machine-readable storage media to monitor a media presentation1 Oct 2026US 2026/0303906 A1The Nielsen Company (US), LLC
- Information processing method and apparatus, device, and storage medium1 Oct 2026US 2026/0303923 A1Beijing Zitiao Network Technology Co., Ltd.
Most cited
By later US patents
- Audience measurement system utilizing ancillary codes and passive signatures1,063US 5,481,294 AA. C. Nielsen Company · 1996
- Object customization and presentation system555US 7,859,551 B22010
- Intelligent automated assistant for TV user interactions537US 9,338,493 B2Apple Inc. · 2016
- Audiovisual information management system435US 6,236,395 B1Sharp Laboratories of America, Inc. · 2001
- Synchronizing text/visual information with audio playback339US 7,058,889 B2Koninklijke Philips Electronics N. V. · 2006