Digital/analogue conversion

Details Digital/analogue conversion Digital/analogue conversion

1997-08-14

1999-09-14

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

341144, H03M 120

Patent

active

059529458

ABSTRACT:
Method and apparatus of converting between digital and analogue signal formats, wherein dither signals are combined with information signals to be converted, the dither signals being as a predetermined plurality of particular discrete frequencies that are outside desired information signal bandwidth and have orderly relation including to signal conversion sampling rate, which orderly relation aids looping of sequences of patterns in a related data stream having pattern-to-pattern transitions similar to within-pattern transitions. Specifically, discrete dither signal frequencies have integral relation with their minimum separation or spacing and with said sampling rate, the lowest frequency and the minimum frequency separation each being whole number divisors or submultiples of higher dither frequencies andor of the signal conversion rate.

REFERENCES:
patent: 4994803 (1991-02-01), Blackham

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