Signal processing apparatus and a signal storage system

Details Signal processing apparatus and a signal storage system Signal processing apparatus and a signal storage system

2011-01-04

2011-01-04

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

C375S346000

Reexamination Certificate

active

07864466

ABSTRACT:
In general, circuit scale in a DAE is large. The proposed DAE includes First multipliers, Unit processing circuits and Combined circuits. First multipliers use temporary estimated values to respectively compute signals. Unit processing circuits use the signals, which are multiplication results of the first multipliers, to respectively compute signals. Combined circuits use the signals, outputted from the unit processing circuits, to compute respective logarithm likelihood ratios λ4and λ5. Here, in the unit processing circuits, by sharing part of circuits related to computing continuous λs, the circuit scale of the DAE is reduced. For example, with regard to computation of λ4and λ5, part of four unit processing circuits is shared.

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Japanese Office Action for Japanese Patent Application No. 2005-276710 dated Sep. 30, 2008 with English Translation.

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