Analog switched-capacitor vector quantizer

Details Analog switched-capacitor vector quantizer Analog switched-capacitor vector quantizer

1993-11-24

1996-03-26

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

H03M 112

Patent

active

055024416

ABSTRACT:
A switched-capacitor implementation of an analog vector quantizer (AVQ) determines which of various codevectors Vcb most closely matches a vector input signal Vinput of input signal samples. Applications for the AVQ include data compression and pattern recognition. The AVQ includes a plurality of distortion measuring circuits (DMCs) each receiving the input signal and a respective one of the codevectors. Each DMC provides a respective one of signals V0-Vn, which are measures of the distortion between Vinput and the respective codevector, where n is the number of codevectors. The signals V0-Vn are received by a best match and addressing generating (BMAG) circuit that determines which of the signals V0-Vn represents the lowest distortion. The BMAG circuit generates an identification signal that identifies which codevector corresponds to the signal representing the lowest distortion. The DMCs compute the L1 norm.

REFERENCES:
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