| 10121509 |
Optical disc authentication by interferometric fingerprinting |
John Matthew Town, Holger Hofmann |
2018-11-06 |
| 9117487 |
Method and system for disc authentication and security |
John Matthew Town, Holger Hofmann |
2015-08-25 |
| 9076483 |
DVD replications system and method |
Holger Hofmann, John Matthew Town |
2015-07-07 |
| 9025426 |
Optical disc with pre-recorded and recordable regions and method of forming the disc |
John Matthew Town, Holger Hofmann |
2015-05-05 |
| 9019807 |
Optical disc with pre-recorded and recordable regions and method of forming the disc |
John Matthew Town, Holger Hofmann |
2015-04-28 |
| 8792321 |
Optical disc with pre-recorded and recordable regions and method of forming the disc |
John Matthew Town, Holger Hofmann |
2014-07-29 |
| 8731381 |
Virtual DVD on demand and electronic DVD rental/buy/burn |
— |
2014-05-20 |
| 8722168 |
Data disc, method and system of forming the disc |
John Matthew Town, Patrick Byrne, Thomas Hartmann |
2014-05-13 |
| 8696858 |
Apparatus and method for improving center hole radial runout control in optical disk manufacturing |
Daniel Jay Sanocki, William G. Lucas |
2014-04-15 |
| 8675466 |
Optical disc with pre-recorded and recordable regions and methods of forming the disc |
John Matthew Town, Holger Hofmann |
2014-03-18 |
| 8623486 |
Hybrid disc, method and system of forming the disc |
John Matthew Town, Patrick Byrne |
2014-01-07 |
| 8379501 |
Disc authentication by grayscale image |
Holger Hofmann, John Matthew Town |
2013-02-19 |
| 8213289 |
Compatible optical recording medium |
Joachim Knittel, Hartmut Richter |
2012-07-03 |
| 8139460 |
High-speed multi-layer optical disc recording |
— |
2012-03-20 |
| 7928865 |
Method and apparatus for embedding second code into optical disc data by data modulation rule variation |
Holger Hofmann, John Matthew Town |
2011-04-19 |
| 5889750 |
System for adjusting the spot size in an optical recording system |
G. Clayton Summers |
1999-03-30 |
| 4967286 |
Method and apparatus for forming a digital image on an optical recording disc |
Ram R. Nomula, Gordon Rudd |
1990-10-30 |
| 4735878 |
Optically read recording medium and method for making same |
Michael W. Goff, Vinai K. Thummalapally, Thomas M. Whitworth, Ramchandra R. Nomula |
1988-04-05 |
| 4629668 |
Optically read recording medium and method for making same |
Michael W. Goff, Vinai K. Thummalapally, Thomas M. Whitworth, Ramchandra R. Nomula |
1986-12-16 |