| Apparatus and method for moving and copying rights objects between device and portable storage device B Lee, TS Kim, Y Oh, SH Kim US Patent 8,176,322, 2012 | 120 | 2012 |
| Method and apparatus for playing back content based on digital rights management between portable storage and device, and portable storage for the same B Lee, TS Kim, Y Oh US Patent 7,810,162, 2010 | 65 | 2010 |
| Method and apparatus for transmitting rights object information between device and portable storage Y Oh, TS Kim, SH Kim US Patent 8,646,061, 2014 | 45 | 2014 |
| Method and apparatus for playing back content based on digital rights management between portable storage and device, and portable storage for the same B Lee, Y Oh, TS Kim, SH Kim US Patent 7,779,479, 2010 | 29 | 2010 |
| Method and apparatus for searching rights objects stored in portable storage device using object location data M Kwon, Y Oh US Patent 7,571,852, 2009 | 29 | 2009 |
| Method for moving a rights object between devices and a method and device for using a content object based on the moving method and device Y Oh, JJ Choi US Patent 8,181,266, 2012 | 28 | 2012 |
| Apparatus and method for using secure removable media (SRM) in digital rights management Y Oh US Patent 8,918,640, 2014 | 25 | 2014 |
| Method and portable storage device for allocating secure area in insecure area Y Oh, S Jung, M Kwon US Patent 8,161,524, 2012 | 24 | 2012 |
| Empirical analysis of Internet identity misuse: case study of South Korean real name system Y Oh, T Obi, JS Lee, H Suzuki, N Ohyama Proceedings of the 6th ACM workshop on Digital identity management, 27-34, 2010 | 19 | 2010 |
| Device and portable storage device which are capable of transferring rights object, and a method of transferring rights object Y Oh, S Sim, Y Kim US Patent 8,661,430, 2014 | 17 | 2014 |
| Method and apparatus for creating and applying secure file identifier of rights object by using random numbers Y Kim, Y Oh, S Sim, J Kim US Patent 8,196,208, 2012 | 17 | 2012 |
| Method and device for consuming rights objects having inheritance structure in environment where the rights objects are distributed over plurality of devices Y Oh, S Lee US Patent 8,180,709, 2012 | 17 | 2012 |
| Method and apparatus for searching rights objects stored in portable storage device using object location data M Kwon, Y Oh US Patent 7,571,852, 2009 | 16 | 2009 |
| Host device, portable storage device, and method for updating meta information regarding right objects stored in portable storage device Y Oh, S Jung, M Kwon US Patent 8,438,112, 2013 | 14 | 2013 |
| Apparatus and method for operating plural applications between portable storage device and digital device Y Oh, TS Kim, SH Kim US Patent 7,882,291, 2011 | 12 | 2011 |
| Digital rights management method and apparatus Y Oh, S Sim, S Lee, Y Kim, J Kim US Patent 8,261,073, 2012 | 11 | 2012 |
| Apparatus and method for managing plurality of certificates Y Oh, S Sim, S Lee US Patent 8,006,084, 2011 | 11 | 2011 |
| Method and apparatus for searching for rights objects stored in portable storage device object identifier S Jung, Y Oh, M Kwon US Patent 8,032,941, 2011 | 8 | 2011 |
| Apparatus and method for implementing digital rights management systems in low-efficiency storage device Y Oh, S Sim, S Lee US Patent 8,023,652, 2011 | 6 | 2011 |
| Apparatus and method for managing rights object Y Kim, Y Oh US Patent 8,286,235, 2012 | 5 | 2012 |
