| 摘要 |
In an optical storage medium, preferably a CD or DVD, comprising a spiral track which consists of pits following one another, a hologram is superimposed in the recording region. To achieve a great security against faking by the superimposition with the hologram, without the good recognisability of the hologram being substantially impaired on its reconstruction, the hologram is introduced at least into one information carrier, for example into the surface region of the recording region including the pit. |
