Modulated dither signal

Details Modulated dither signal Modulated dither signal

1994-02-23

1995-09-19

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

341155, H03M 120

Patent

active

054519470

ABSTRACT:
A system for analogue to digital conversion comprising a means (4) for receiving an input analogue signal, a dither generator for adding a dither signal and an analogue to digital converter (2) for converting the combined input signal and dither signal to a digital value, characterized in that the dither generator provides a dither signal of a form comprising a first periodic dither signal having superimposed and being shaped by a second signal having at least one component which varies the first periodic dither signal over at least one quantization interval of the analogue to digital converter.

REFERENCES:
patent: 2669608 (1954-02-01), Goodall
patent: 3877022 (1975-04-01), Lehman et al.
patent: 4187466 (1980-02-01), Kasson et al.
patent: 4965668 (1990-10-01), Abt et al.
patent: 5073778 (1991-12-01), Ueki et al.
patent: 5189418 (1993-02-01), Bartz et al.

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