A method and apparatus for controlling access to a storage medium, such as an optically readable medium. Light sensitive or other materials that are adapted to change state and affect reading of a storage medium are used to control access to data that may be stored on optical medium and/or to control use of the medium.
申请公布号
EP1656760(A4)
申请公布日期
2008.07.09
申请号
EP20040781630
申请日期
2004.08.19
申请人
VERIFICATION TECHNOLOGIES, INC
发明人
SELINFREUND, RICHARD, H.;VIG, RAKESH;GOYETTE, DONALD, R.;MILLER, PETER;DREW, JEFFREY, M.
