Variable delay device

Details Variable delay device Variable delay device

1992-06-26

1994-02-08

Heyman, John S.

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307602, H03K 515

Patent

active

052851222

ABSTRACT:
A variable delay device includes a variable delay circuit (12) and a correction circuit (14). On the basis of output signals R and V from variable delay lines (30, 32) of the correction circuit, an output signal V.sub.L by which a control characteristic of a variable delay line (16) is made substantially linear is outputted to the variable delay circuit from a linearity detector (34) of the correction circuit. The output signals R and V are also applied to a variable range detector (36), and on the basis of an output of the detector (36), an output signal V.sub.r by which a variable range of the variable delay line (16) is made constant is outputted to the variable delay circuit (12) from a reference level generator (38) of the correction circuit. The output signal V.sub.L determines an input/output characteristic of a non-linear circuit (22) which is included in the variable delay circuit and modifies a variable amount control signal V.sub.d, and the output signal V.sub.r is added to an output signal of the non-linear circuit by an adder (24) included in the variable delay circuit, and an adder result is applied to the variable delay line (16) as a control signal therefor.

REFERENCES:
patent: 4041533 (1977-08-01), Yamamoto et al.
patent: 4737670 (1988-04-01), Chan
patent: 5144174 (1992-09-01), Murakami
patent: 5196736 (1993-03-01), Doornhein et al.
Patent Abstracts of Japan vol. 12, No. 293 (E-645) Aug. 10, 1988 & JP-A-63 069 314 (Sony) Mar. 29, 1988 * abstract*.

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