| 摘要 |
A lock member includes a body having a lower surface below which a male lock pin projects in an orientation that allows it to be received in a female lock member. The lower surface is continuous, entirely surrounds, and is spaced from the lock pin. The spacing provides room to receive the upper portion of the disc retaining hub. The ring-shaped planar portion may rest directly against or closely adjacent the upper surface of a media disc. In one configuration, the ring-shaped planar portion spaces the lock pin from an EAS tag chamber. The configuration of the lock member increases the likelihood that the media disc will be damaged during a physical attack on the lock member.
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