Rapid advances in recording materials, read/write heads, and mechanical designs over the
last 15 years have led to the need for more complicated signal processing, coding, and …

Maximum and near-maximum likelihood sequence detectors in signal-dependent noise are
discussed. It is shown that the linear prediction viewpoint allows a very simple derivation of …

A new code is presented which improves the minimum distance properties of sequence
detectors operating at high linear densities. This code, which is called the maximum …

A coding scheme that concatenates, in parallel, multiple single bit parity check block codes
is considered for use in high areal density magnetic recording. The coding scheme can be …

Unlike in many communication channels, the read signals in thin-film magnetic recording
channels are corrupted by non-Gaussian, data-dependent noise and nonlinear distortions …

This paper proposes a new signal-to-noise ratio (SNR) definition for magnetic recording
channels with both additive and medium noise components. The proposed SNR is a …

A read channel (18) for use in a mass storage system is provided. The read channel (18)
includes a plurality of circuit modules circuit and an error estimation circuit (50). The plurality …

This paper derives closed-form expressions for modeling a magnetic recording channel with
transition noise. The closed-form expressions assume matched filtering, a Lorentzian …

An automatic gain control circuit (44) is provided for generating an output gain Signal. The
automatic gain control circuit (44) includes a full-wave rectifier (70), an adder circuit (74), a …

Achieving multi-Terabyte capacity in tape cartridges requires a substantially higher track
density than that available in present systems, and hence a significantly higher positioning …