H04N 7/1693
By displacing synchronisation signals relative to active picture signals or vice versa
Official title: {by displacing synchronisation signals relative to active picture signals or vice versa}
H04N7/1693 (By displacing synchronisation signals relative to active picture signals or vice versa) appears on 34 US grants and 4 published applications in this corpus.
Search patents in H04N- Granted patents
- 34
- Published applications
- 4
- Assignees
- 16
- Inventors
- 33
- Latest grant
- 16 Feb 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for providing a copy-protected video signal16 Feb 2016US 9,264,657 B2DCS Copy Protection Limited
- Method and apparatus for providing a copy-protected video signal13 Sep 2011US 8,019,201 B2DCS Copy Protection Limited
- System for the transmission of audiovisual signals between source nodes and destination nodes28 Apr 2009US 7,526,789 B2Canon Europa N. V.
- Scrambling and descrambling a high definition TV signal25 Sep 2007US 7,274,790 B2Macrovision Corporation
- Method and apparatus for generating a signal that defeats illegal cable decoders4 Jan 2005US 6,839,433 B1Macrovision Corporation
- Method and Apparatus for Providing a Copy-Protected Video Signal5 Jan 2012US 2012/0002950 A1DCS Copy Protection Limited
- Method and apparatus for providing a copy-protected video signal4 May 2006US 2006/0093326 A1DCS Copy Protection Limited
- Scrambling and descrambling a high definition TV signal11 Mar 2004US 2004/0047469 A1Macrovision Corporation
- System for the transmission of audiovisual signals between source nodes and destination nodes27 Nov 2003US 2003/0221195 A1Canon Europa N. V.
Most cited
By later US patents
- Addressable subscription television system having multiple scrambling modes137US 4,716,588 APayview Limited · 1987
- System and method for maintaining synchronization between audio and video86US 6,262,776 B1Microsoft Corporation · 2001
- Apparatus and method for effectively inhibiting unauthorized copying of picture signals which does not interfere with an authorized display thereof80US 6,266,480 B1Sony Corporation · 2001
- Coded signal decoding circuit, and synchronous control method for the same, synchronous detecting method, and synchronization detecting circuit therefor36US 5,777,999 AMitsubishi Denki Kabushiki Kaisha · 1998
- Method and apparatus for digitally removing or defeating effects of copy protection signals from a video signal34US 5,953,417 AMacrovision Corporation · 1999