Apparatus having shared modular architecture for decimation and

Details Apparatus having shared modular architecture for decimation and Apparatus having shared modular architecture for decimation and

1989-10-30

1991-02-26

Shoop, Jr., William M.

Coded data generation or conversion

Analog to digital conversion followed by digital to analog...

341 61, 36472401, H03M 700

Patent

active

049965280

ABSTRACT:
An apparatus adaptable for use with an analog-digital-analog conversion device for effecting communications between an analog device and a digital device, the analog-digital-analog conversion device converting incoming analog signals received from the analog device to incoming digital signals, and for converting interpolated outgoing digital signals to outgoing analog signals. The apparatus has a digital signal processing circuit for decimating the incoming digital signals and providing a decimated incoming digital signal to the digital device, and for interpolating outgoing digital signals received from the digital device and providing an interpolated outgoing digital signal to the analog-digital-analog device.
The digital signal processing circuit is comprised of a plurality of modules which are configured so that a specified set of the plurality of modules effects a specified number of iterations of decimation and a specified number of iterations of interpolation. Certain of the specified set of modules participate in both the decimation and interpolation operations. The modules are further designed so that additional modules may be added to the specified set of modules to increase the iterations of decimation or to increase the iterations of interpolation, or to increase the iterations of both decimation and interpolation.

REFERENCES:
patent: 4020332 (1977-04-01), Crochiere et al.
patent: 4855743 (1989-08-01), Hester

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