Dual detector read channel with semi-soft detection
AssigneeMaxtor Corporation
InventorC. Michael Riggle
Life of this patent
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Abstract
An apparatus for detecting data within a signal having both data and noise is disclosed herein. The apparatus includes means for receiving first samples of an input signal, a first detection unit and a second detection unit. The first detection unit processes the first data samples to create a first bit signal, a second bit signal and a probability related signal. The second detection unit includes first and second modification units and a selection unit. The first and second modification units separately modify the first data samples based on the first and second bit signals, respectively, to create first and second error signals, respectively. The selection unit selects one of the first and second bit signals based on the first and second error signals and a threshold signal.
Claims11
An apparatus for detecting data within a signal having both data and noise, said apparatus for use in a data storage system, comprising:
- means for receiving first data samples of an input signal;
- a first detection unit for processing said first data samples to create a first bit signal, a second bit signal, and a probability related signal;
- first and second modification units for separately modifying said first data samples based on said first and second bit signals, respectively, to create first and second error signals, respectively;
- and
- a selection unit for selecting one of said first or second bit signals based on said first and second error signals and a threshold signal.
Dependencies are inferred from the claim text.