H04N 2005/91314
The copy protection signal being a pulse signal inserted in blanking intervals
Official title: {the copy protection signal being a pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses}
H04N2005/91314 (The copy protection signal being a pulse signal inserted in blanking intervals) appears on 222 US grants and 136 published applications in this corpus.
Search patents in H04N- Granted patents
- 222
- Published applications
- 136
- Assignees
- 64
- Inventors
- 205
- Latest grant
- 1 Dec 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 12 | 0 |
| 2001 | 18 | 9 |
| 2002 | 30 | 14 |
| 2003 | 5 | 15 |
| 2004 | 14 | 8 |
| 2005 | 6 | 10 |
| 2006 | 14 | 14 |
| 2007 | 8 | 25 |
| 2008 | 9 | 13 |
| 2009 | 5 | 6 |
| 2010 | 5 | 6 |
| 2011 | 5 | 1 |
| 2012 | 9 | 3 |
| 2013 | 8 | 5 |
| 2014 | 3 | 2 |
| 2015 | 1 | 1 |
| 2016 | 3 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus1 Dec 2020US 10,854,237 B2Maxell, Ltd.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus7 Jan 2020US 10,529,372 B2Maxell, Ltd.
- Copy protection system6 Aug 2019US 10,375,442 B2SmarDTV SA
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus26 Sep 2017US 9,773,522 B2Hitachi Maxell, Ltd.
- Copy protection system25 Oct 2016US 9,479,829 B2DCS Copy Protection Limited
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus8 Apr 2021US 2021/0104258 A1Maxell, Ltd.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus2 Apr 2020US 2020/0105300 A1Maxell, Ltd.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus21 Dec 2017US 2017/0365292 A1Hitachi Maxell, Ltd.
- Copy protection system9 Feb 2017US 2017/0041665 A1DCS Copy Protection Limited
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus26 Nov 2015US 2015/0340059 A1Hitachi Maxell, Ltd.
Most cited
By later US patents
- Method for controlling copy protection in digital video networks267US 6,381,747 B1Macrovision Corporation · 2002
- Copy protection for hybrid digital video tape recording and unprotected source material242US 5,315,448 AMacrovision Corporation · 1994
- Method and apparatus for copy-once watermark for video recording185US 6,374,036 B1Digimarc Corporation · 2002
- Device having a digital interface and a network system using such a device and a copy protection method144US 5,987,126 AKabushiki Kaisha Toshiba · 1999
- Method and apparatus for processing a video signal so as to prohibit the making of acceptable video tape recordings thereof110US 4,631,603 AMacrovision Corporation · 1986