H04N 9/7912
The interfering signals being intermodulation signals
Official title: {the interfering signals being intermodulation signals}
H04N9/7912 (The interfering signals being intermodulation signals) appears on 18 US grants and 0 published applications in this corpus.
Search patents in H04N- Granted patents
- 18
- Published applications
- 0
- Assignees
- 10
- Inventors
- 25
- Latest grant
- 1 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 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 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multi-frequency data communication service over multiple wireless access nodes1 Feb 2022US 11,240,748 B1Sprint Communications Co.L.P.
- Signal demodulating apparatus capable of effectively suppressing the beat interference caused by the pilot signal20 Feb 1996US 5,493,346 ASony Corporation
- Apparatus for reducing noise in high-frequency band27 Jun 1995US 5,428,455 ASanyo Electric Co., Ltd.
- Video disc reproducing apparatus with phase shifter to eliminate inter-modulation distortion between reproduced audio and video signals15 Mar 1994US 5,294,995 ASony Corporation
- Demodulator for FM modulated video signals with pre-demodulation sideband suppression and post-demodulation sideband restoration6 Apr 1993US 5,200,835 ASony Corporation
No published applications in this class yet.
Most cited
By later US patents
- Frequency demodulator having circuit cancelling undesired signal components21US 4,908,581 AMatsushita Electric Industrial Co., Ltd. · 1990
- System for reducing or suppressing noise components in television signal18US 4,302,768 AMatsushita Electric Industrial Co., Ltd. · 1981
- Method and apparatus for recording and/or reproducing color video signal16US 4,647,983 AVictor Company of Japan, Ltd. · 1987
- Method of reducing interference components in a frequency modulated signal and device for carrying out said method10US 4,223,282 AU. S. Philips Corporation · 1980
- Moire interference reducing circuit for FM video recorders6US 4,052,740 AAmpex Corporation · 1977