G11B 20/00405
The key being stored by varying characteristics of the recording track
Official title: {the key being stored by varying characteristics of the recording track, e.g. by altering the track pitch or by modulating the wobble track}
G11B20/00405 (The key being stored by varying characteristics of the recording track) appears on 107 US grants and 111 published applications in this corpus.
Search patents in G11B- Granted patents
- 107
- Published applications
- 111
- Assignees
- 25
- Inventors
- 97
- Latest grant
- 1 Aug 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 7 |
| 2003 | 6 | 9 |
| 2004 | 6 | 18 |
| 2005 | 1 | 14 |
| 2006 | 20 | 19 |
| 2007 | 9 | 11 |
| 2008 | 10 | 14 |
| 2009 | 17 | 9 |
| 2010 | 10 | 1 |
| 2011 | 10 | 1 |
| 2012 | 3 | 4 |
| 2013 | 2 | 1 |
| 2014 | 4 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 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.
- Information recorder, information reproducer, recording media manufacturing system, and information recording media, method and program16 Dec 2014US 8,913,473 B2Sony Corporation
- Apparatus for, and method of, recording/playing audio data having additional information embedded therein17 Jun 2014US 8,756,709 B2Sony Corporation
- Information carrier comprising access information6 May 2014US 8,718,277 B2Koninklijke Philips N. V.
- Information carrier comprising access information4 Feb 2014US 8,644,118 B2Koninklijke Philips N. V.
- 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 recorder, information reproducer, recording media manufacturing system, and information recording media, method and program5 Jul 2012US 2012/0170434 A1Sony Corporation
- Information recording device, information reproducing device, recording medium manufacturing device, information recording medium, method, and program14 Jun 2012US 2012/0147723 A1Sony Corporation
- Information carrier comprising access information10 May 2012US 2012/0113788 A1Koninklijke Philips Electronics N. V.
Most cited
By later US patents
- Marking a digitally encoded video and/or audio signal110US 6,131,161 AU. S. Philips Corporation · 2000
- Record carrier having first variations of a first physical parameter corresponding to information recorded thereon and second variations of a second physical parameter relating to recovery of the information66US 5,724,327 AU. S. Phillips Corporation · 1998
- Information carrier containing auxiliary information, reading device and method of manufacturing such an information carrier54US 6,031,815 AU. S. Philips Corporation · 2000
- Method for minimizing pirating and/or unauthorized copying and/or unauthorized access of/to data on/from data media including compact discs and digital versatile discs, and system and data media for same50US 6,684,199 B1Recording Industry Association of America · 2004
- Encrypting method and apparatus, recording method, decrypting method and apparatus, and recording medium48US 5,917,910 ASony Corporation · 1999