Method of Vernier digital-to-analog conversion

Abstract

A method of Vernier digital-to-analog conversion, the method including: performing conversion of a reference signal Y using a control code X=M+α−αN with a length ψ=α+β, wherein M is a control code with a length α, including high-order bits of the control code X, and α−αN is a control code with a length β, including lower-order bits of the control code X, wherein α≈β; performing digital multiplication of the lower-order a−αN bits of the control code X by aα times algebraic summing α of the high-order bits of the control code X and β of the lower-order bits of a−αN of the control code X being a result of multiplication by aα times, according to formula Q=M±N, wherein N is a resulting digital code of the digital multiplication, and Q is a resulting digital code of M±N; converting the resulting digital code Q from a reference signal Y1 to an analog signal Z1, and converting the resulting digital code N from a reference signal Y2 to an analog signal Z2, wherein reference signals Y1 and Y2 are related by a ratio: Y2=Y1 (1±a−α), wherein a is a base of number system, α is a number of bits of shifting the control code a−αN; and summing analog signals Z1 and Z2 to generate an analog output signal Z0.

Dependencies are inferred from the claim text.