G11B 20/00369
Wherein a first key, which is usually stored on a hidden channel
Official title: {wherein a first key, which is usually stored on a hidden channel, e.g. in the lead-in of a BD-R, unlocks a key locker containing a second}
G11B20/00369 (Wherein a first key, which is usually stored on a hidden channel) appears on 9 US grants and 35 published applications in this corpus.
Search patents in G11B- Granted patents
- 9
- Published applications
- 35
- Assignees
- 7
- Inventors
- 52
- Latest grant
- 29 Jan 2013
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| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 4 |
| 2003 | 0 | 4 |
| 2004 | 0 | 10 |
| 2005 | 0 | 6 |
| 2006 | 1 | 1 |
| 2007 | 2 | 2 |
| 2008 | 2 | 4 |
| 2009 | 3 | 3 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
By publication year.
Recent patents
- Record carrier for storing a digital work29 Jan 2013US 8,364,981 B2Koninklijke Philips Electronics N. V.
- Method and device for protecting user information against manipulations24 Nov 2009US 7,624,285 B2Koninklijke Philips Electronics N. V.
- Data recording apparatus and method and data reproducing apparatus and method22 Sep 2009US 7,594,123 B2Sony Corporation
- Digital content store system17 Feb 2009US 7,493,289 B2AOL Inc.
- Recording medium, recording method, recording apparatus, and reproduction method29 Jul 2008US 7,406,177 B2Sony Corporation
- Method and device for controlling distribution and use of digital works6 Feb 2014US 2014/0040143 A1Koninklijke Philips N. V.
- Controlling distribution and use of digital works5 Nov 2009US 2009/0276635 A1Koninklijke Philips Electronics N. V.
- Digital Content Storage Process25 Jun 2009US 2009/0164794 A1
- Device for running copy-protected software8 Jan 2009US 2009/0011828 A1Koninklijke Philips Electronics N. V.
- Method and Device For Controlling Distribution And Use of Digital Works20 Nov 2008US 2008/0288412 A1
Most cited
By later US patents
- Digital content store system44US 7,493,289 B2AOL Inc. · 2009
- Apparatus and method for reading or writing user data5US 7,328,352 B2Koninklijke Philips Electronics N. V. · 2008
- Data recording medium, recording medium recording and/reproducing apparatus, and recording or reproducing method3US 7,240,221 B2Sony Corporation · 2007
- Recording medium, recording method, recording apparatus, and reproduction method3US 7,406,177 B2Sony Corporation · 2008
- Method and apparatus for decrypting encrypted data stored on a record carrier2US 7,209,562 B2Koninklijke Philips Electronics N. V. · 2007