H04N 5/9315
The level control being frequency dependent
Official title: {the level control being frequency dependent (H04N5/923 takes precedence)}
H04N5/9315 (The level control being frequency dependent) appears on 44 US grants and 1 published applications in this corpus.
Search patents in H04N- Granted patents
- 44
- Published applications
- 1
- Assignees
- 22
- Inventors
- 88
- Latest grant
- 15 Mar 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Storage systems configured for storage volume addition in synchronous replication using active-active configuration15 Mar 2022US 11,275,765 B2EMC IP Holding Company LLC
- Automatic picture quality controller8 Aug 2000US 6,101,312 ASharp Kabushiki Kaisha
- Inversion prevention device10 Jun 1997US 5,638,407 AMitsubishi Denki Kabushiki Kaisha
- Equalizer used for a VTR20 May 1997US 5,631,997 ASanyo Electric Co., Ltd.
- Image quality adjusting device which detects the grade of an envelope of an FM luminance signal6 Aug 1996US 5,543,974 AMatsushita Electric Industrial Co., Ltd.
Most cited
By later US patents
- Apparatus for a high definition VCR which selects a video signal characteristic to be transmitted depending on characteristics of the tap and channel14US 5,448,369 AGoldstar Co., Ltd. · 1995
- Signal reproducing circuit for a video tape recorder12US 4,510,530 AHitachi, Ltd. · 1985
- Method and apparatus for video signal recording and playback signal level compensation based on recorded reference signal12US 4,807,056 AMatsushita Electric Industrial Co., Ltd. · 1989
- Replay equalization circuit in digital image recorder12US 5,247,401 AHitachi, Ltd. · 1993
- Method and apparatus for equalizing FM video signals using variable equalizer11US 5,124,850 AKabushiki Kaisha Toshiba · 1992