G11B 20/00601
Wherein properties of tracks are altered
Official title: {wherein properties of tracks are altered, e.g., by changing the wobble pattern or the track pitch, or by adding interruptions or eccentricity}
G11B20/00601 (Wherein properties of tracks are altered) appears on 152 US grants and 147 published applications in this corpus.
Search patents in G11B- Granted patents
- 152
- Published applications
- 147
- Assignees
- 37
- Inventors
- 139
- Latest grant
- 1 Aug 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 1 | 5 |
| 2003 | 4 | 12 |
| 2004 | 7 | 23 |
| 2005 | 4 | 16 |
| 2006 | 21 | 24 |
| 2007 | 12 | 16 |
| 2008 | 17 | 18 |
| 2009 | 22 | 15 |
| 2010 | 13 | 4 |
| 2011 | 12 | 2 |
| 2012 | 4 | 6 |
| 2013 | 5 | 1 |
| 2014 | 5 | 2 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Information carrier comprising access information1 Aug 2017US 9,720,622 B2Koninklijke Philips N. V.
- Anti-piracy feature for optical discs7 Mar 2017US 9,589,590 B2Microsoft Technology Licensing, LLC
- Multiple track pitches for SMR8 Mar 2016US 9,281,008 B1Seagate Technology LLC
- Method and system for disc authentication and security25 Aug 2015US 9,117,487 B2Thomson Licensing
- DVD replications system and method7 Jul 2015US 9,076,483 B2Thomson Licensing
- Anti-piracy feature for optical discs31 Mar 2016US 2016/0093324 A1Microsoft Corporation
- Method and system for disc authentication and security27 Nov 2014US 2014/0347968 A1Thomson Licensing
- Information carrier comprising access information29 May 2014US 2014/0149661 A1Koninklijke Philips Electronics N. V.
- Information carrier comprising access information25 Apr 2013US 2013/0100784 A1Koninklijke Philips Electronics N. V.
- Information recording device and information recording method4 Oct 2012US 2012/0250174 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Method and apparatus for copy protection for various recording media using a video finger print157US 5,659,613 AMacrovision Corporation · 1997
- Marking a video and/or audio signal140US 5,940,134 AU. S. Philips Corporation · 1999
- Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium105US 5,881,038 AMatsushita Electric Industrial Co., Ltd. · 1999
- Optical disk with copy protection, and apparatus and method for recording and reproducing same103US 5,809,006 ACagEnt Technologies, Inc. · 1998
- Recording and reproducing apparatus101US 5,473,584 AMatsushita Electric Industrial Co., Ltd. · 1995