Deltic (time compressor) with adjustable multiplication ratio

DETAILED DESCRIPTION With the foregoing in mind, it is a principal object of this invention to provide an improved deltic configuration in which the multiplication M varies directly with n and is given by ##EQU1## Another object of this invention is the provision of an improved, universal deltic device of the foregoing character which, in one embodiment may utilize an N-bit loop comprising a glass or quartz delay line, and in another embodiment may utilize a plurality of parallel N/k bit loops comprising shift registers operated as delay elements.
The latter embodiment, using metal oxide semi-conductor shift register delay elements operating at clock rates of 10 M Hz or less would be a particularly desirable arrangement.
As another object this invention aims to achieve the foregoing through the provision of novel deltic configurations comprising means for changing the effective length of the recirculation loop between sample intervals.