Serial parallel type analog to digital converting device

Details Serial parallel type analog to digital converting device Serial parallel type analog to digital converting device

1976-01-16

1978-10-24

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, 340347M, H03K 13175

Patent

active

041224396

ABSTRACT:
A serial parallel type A-D converting device having high accuracy and a simplified multi-stage configuration for correcting errors caused by d.c. drift or gain drift in a preceding stage, so as to obviate overloading in a succeeding stage, by means of offering previously a unidirectional level offset to a digital signal converted in the preceding stage, and correspondingly in the succeeding stage, expanding unidirectionally the dynamic range of an A-D converter, and shifting the level of a digital signal converted from an input analog signal deviating out of a normal range by an amount corresponding to the lowest bit of the digital signal converted in the preceding stage, wherein the level offset offered previously is removed later by adding a carry or by subtracting a borrow formed by the A-D converter in the succeeding stage.

REFERENCES:
patent: 3311910 (1967-03-01), Doyle
patent: 3541315 (1970-11-01), Naydan et al.
patent: 3581304 (1971-05-01), Paradise et al.
patent: 3646586 (1972-02-01), Kurz
patent: 3860952 (1975-01-01), Tallent et al.
patent: 3949170 (1976-04-01), Shionoya
patent: 3967269 (1976-06-01), Fletcher
Fletcher, A Video Analogue to Digital Converter, Oct. 1974, Report of the International Broadcasting Convention, pp. 47-57.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, p. II-41.

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