Storage device having a read circuit to detect a storage...

Details Storage device having a read circuit to detect a storage... Storage device having a read circuit to detect a storage...

2007-11-27

2007-11-27

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

Reexamination Certificate

active

10842194

ABSTRACT:
A storage device includes a probe and a storage medium, where the probe is adapted to form perturbations in the storage medium. A read circuit detects a storage state, with the read circuit to receive a first signal representing interaction between the probe and the storage medium. The read circuit derives a second signal based on the first signal, the second signal being a second derivative of the first signal. The read circuit is adapted to detect the storage state based on the second signal.

REFERENCES:
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patent: 5856967 (1999-01-01), Mamin et al.
patent: 6233206 (2001-05-01), Hamann et al.
patent: 6370107 (2002-04-01), Hosaka et al.
patent: 6466537 (2002-10-01), Kasama et al.
patent: 6473361 (2002-10-01), Chen et al.
patent: 6665239 (2003-12-01), Takahashi et al.
Vettiger and Binnig, Scientific American, “The Nanodrive Project,” pp. 47-51, 53 (Jan. 2003).

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