초록 ▼

A mass storage drive removably supports a mass storage element and includes a data head having an output for reading tracks of main data elements. The data head, which can be an optical head, is movable in a predetermined auxiliary path relative to the substrate for scanning a unique machine-readabl

A mass storage drive removably supports a mass storage element and includes a data head having an output for reading tracks of main data elements. The data head, which can be an optical head, is movable in a predetermined auxiliary path relative to the substrate for scanning a unique machine-readable serial identifier in auxiliary data containing at least 200 bits of information in one or more tracks being exclusive of main data tracks. The mass storage drive includes a head circuit connected to the data head output and having a main amplifier with an output for signaling main data elements in response to the data head, the circuit having a separate auxiliary put for signaling the auxiliary data elements in response to the data head output. The head circuit can include an auxiliary amplifier for driving the auxiliary output. The main amplifier can include a first frequency response effective for passing the main data elements, and the auxiliary amplifier can have a second frequency response for passing the auxiliary data elements while effectively blocking the main data elements. The main amplifier can have a first reference connection for balancing the main output relative to a data threshold, the auxiliary amplifier having a second reference connection effective for balancing the auxiliary output relative to a serial code threshold of the data head when the data head is reading auxiliary data elements.

대표청구항 ▼

[ What is claimed is:] [1.] A mass storage drive incorporating a mass storage element, the mass storage element comprising:(a) a substrate;(b) a main storage media on the substrate;(c) a multiplicity of main data elements stored in the main storage media, the main data elements being readable from m

[ What is claimed is:] [1.] A mass storage drive incorporating a mass storage element, the mass storage element comprising:(a) a substrate;(b) a main storage media on the substrate;(c) a multiplicity of main data elements stored in the main storage media, the main data elements being readable from main data tracks by data head means when the data head means moves in predetermined main path relative to the substrate; and(d) an auxiliary storage media on the substrate having a unique machine-readable serial identifier in a plurality of auxiliary data elements in at least one auxiliary data track wherein the auxiliary data contains at least 200 bits of information, the auxiliary data elements being readable by the data head means when the data head means moves in a predetermined auxiliary path relative to the substrate, the auxiliary path being exclusive of the main data tracks;(e) means for removably supporting the mass storage element;(f) a data head having an output for signaling the main data elements of the auxiliary data elements;(g) drive means for moving the substrate in a predetermined path relative to the data head for operation thereof; and(h) a head circuit including a main amplifier connected to the data head output and having a main output for signaling the main data elements in response to the data head, the circuit also having a separate auxiliary output for signaling the auxiliary data elements in response to the data head output.