| 8953235 |
Method for producing a security mark on an optical data carrier |
Joachim Knittel |
2015-02-10 |
| 8599674 |
Method for storing data on an optical recording medium |
Holger Hofmann, Stephan Knappmann, Christof Ballweg, Christian Buchler |
2013-12-03 |
| 8228775 |
Holographic recording medium having a track pitch smaller than a distance between adjacent holograms |
Heiko Trautner, Dietmar Braeuer, Christof Ballweg |
2012-07-24 |
| 8213289 |
Compatible optical recording medium |
Joachim Knittel, Alan Bruce Hamersley |
2012-07-03 |
| 8203925 |
Apparatus for recording angular multiplexed pits |
Joachim Knittel, Stephan Knappmann |
2012-06-19 |
| 8184516 |
Method for controlling the quality of storage media |
Stefan Kimmelmann, Atols Kern, Xavier Lebegue, Emmanuel Daugeras |
2012-05-22 |
| 8077579 |
Holographic recording medium and pickup for this medium |
Heiko Trautner |
2011-12-13 |
| 7852714 |
Compact pickup for micro optical drive |
Joachim Knittel |
2010-12-14 |
| 7596070 |
Device for reading and/or writing optical recording media |
Sören Dambach |
2009-09-29 |
| 7541564 |
Optical pickup |
Joachim Knittel, Gael Pilard |
2009-06-02 |
| 7477590 |
Optical recording medium having at least two recordable layers |
Dietmar Uhde |
2009-01-13 |
| 7440152 |
Holographic disk medium with servo marks |
Joachim Knittel, Stephan Knappmann |
2008-10-21 |
| 7385905 |
Apparatus for reading from and/or writing to optical recording media |
Joachim Knittel |
2008-06-10 |
| 7158471 |
Device and method for reading multilayer optical disk with compensation of shading effects |
Holger Hofmann |
2007-01-02 |
| 7106687 |
Optical recording medium having at least two recordable layers |
Dietmar Uhde |
2006-09-12 |
| 7009165 |
Optical detection device for detecting an intensity of a light beam and for detecting data transmitted by the light beam |
Ingo Hehemann, Werner Brockherde, Armin Kemna, Holger Hofmann |
2006-03-07 |
| 6600704 |
Apparatus for scanning optical recording media having different information carrier layers |
Christoph Dietrich |
2003-07-29 |
| 6574183 |
Device for reading from or writing to optical recording media |
Lieu-Kim Dang, Christoph Dietrich, Heinz-Jorg Schroeder |
2003-06-03 |
| 6430141 |
Device for reading from or writing to optical recording media |
Lieu-Kim Dang, Christoph Dietrich, Heinz-Jorg Schroeder |
2002-08-06 |
| 6304542 |
Compact dual wavelength optical pickup head |
Lieu-Kim Dang, Christoph Dietrich, Heinz-Joerg Schroeder |
2001-10-16 |
| 6215738 |
Device for reading from or writing to optical recording media |
Dietmar Uhde |
2001-04-10 |
| 5923626 |
Recording or playback devices for optical information carriers having a different track width |
— |
1999-07-13 |
| 5905708 |
Focusing two polarized beams onto different information carrier layers of a single optical disc |
— |
1999-05-18 |
| 5841745 |
Method and apparatus for eliminating disturbances encountered during scanning of an information carrier |
Hans-Robert Kuhn |
1998-11-24 |
| 4909267 |
Cooling pipe for bar |
Franz Tamm, Arnold Joachim, Hartmut Blank, Bernhard Horicke, Joachim Schulz |
1990-03-20 |