Authorization verification method and devices suited therefor

Registers – Systems controlled by data bearing records – Credit or identification card systems

Reexamination Certificate

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C235S380000

Reexamination Certificate

active

07658328

ABSTRACT:
The invention relates to an authorization verification method and devices suited therefor, which play back authorization data via a user interface (11) of an electronic playback device (1). During the playback of authorization data via the user interface (11) of a first playback device (1), the playback attributes are modified. The playback of authorization data via the user interface (11) of the first playback device (1) is compared with the playback of reference data via a user interface (21) of a second electronic playback device (2). Authorization is granted in the event the playback of authorization data via the user interface (11) of the first playback device (1) matches the playback of reference data via the user interface (21) of the second playback device (2), and modifications of the playback attributes are, in essence, time-synchronized. The dynamic modification of the playback attributes during the playback of authorization data and playback of the reference data render practically impossible the unauthorized copying of image contents or audio contents for falsifying an authorization. In addition, a simultaneous playback of authorization data and reference data render unnecessary inquiries made to an authorization center (3).

REFERENCES:
patent: 5729594 (1998-03-01), Klingman
patent: 6053405 (2000-04-01), Irwin et al.
patent: 6068183 (2000-05-01), Freeman et al.
patent: 6101483 (2000-08-01), Petrovich et al.
patent: 6237786 (2001-05-01), Ginter et al.
patent: 2002/0111909 (2002-08-01), Lee
patent: 2003/0054801 (2003-03-01), Komu et al.
patent: 100 34 275 (2002-01-01), None
patent: 1 345 180 (2003-09-01), None
patent: 02/48926 (2002-06-01), None

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