High data rate magnetic recording in a single channel

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High data rate magnetic recording in a single channel

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The signal processing requirements are described for a single magnetic recording channel with a very high transfer rate (117 Mb/s). On the record side it is necessary to compensate for the relatively slow rise-time of the head fringing field. On the playback side the use of Class IV partial response improves the effective signal-to-noise ratio. A Viterbi detector operates on the redundancy inherent in the ternary partial response samples to provide further processing gain.

Inspec keywords: signal processing; magnetic recording

Other keywords: very high transfer rate; playback; magnetic recording; single channel; data storage; ternary partial response; Class IV partial response; rise-time; redundancy; head fringing field; signal processing; record; Viterbi detector

Subjects: Storage on moving magnetic media; Signal processing and detection; Magnetic recording

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