Digital filter circuit

Details Digital filter circuit Digital filter circuit

2006-06-27

2006-06-27

Vo, Don N. (Department: 2631)

Pulse or digital communications

Equalizers

Automatic

C375S350000

Reexamination Certificate

active

07068713

ABSTRACT:
A digital filter circuit includes a decoder, ROM tables, multipliers, and an adder. The decoder decomposes an input multilevel signal into a plurality of 1-bit signals. The ROM tables output filter waveforms stored in advance, on the basis of the 1-bit signals output from the decoder. The multipliers and adder execute a plurality of weighting operations for the respective bits of outputs from the ROM tables and then add the outputs.

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Kam Van Der, JJ: “A Digital Decimating Filter for Analog-to-digital Conversion of Hi-Fi Audio Signals” Philips Technisch Tudschrift, Natuurkundig Laboratorium Der N.V. Philips. Eindhoven, NL, vol. 42, No. 6/7, Apr. 1986, pp. 230-238, XP002187797.

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