Abstract: In an apparatus for synchronizing received binary signals, the duration of each bit of the received signals to be synchronized is an integral multiple n of the duration of an original bit, and each original bit has a reception quality factor which is stored in time succession, in respect of the individual original bits, in a common quality factor memory. Quality factor differences of successive original bits are formed by means of a differencing means, and the quality factor differences of those original bits which have the same serial number within a reception bit are added by means of adding circuit. The maximum of the summed quality factor differences of n successive original bits is determined by means of a maximum decision circuit. The addresses of the original bits are continuously adapted in such a way that that of the original bit having the maximum summed quality factor difference receives a given, constant and predetermined value.

Abstract: A method and an apparatus for obtaining digital periodic time function signals, and wherein each time function signal is defined by an instantaneous frequency varying in dependence of time within a characteristic period T equal to the period of a first clock signal, includes a generator for generating a second clock signal, period counters for cyclically counting the periods of the second clock signal, a divider for deriving a third clock signal from the second clock signal, and wherein the third clock signal is a subharmonic of the second clock signal, a memory which has a plurality of storage cells for storing groups of binary numbers characteristic of the time function signals, respectively, an address counter for sequentially calling up and reading out the storage cells with the aid of the third clock signal, a logic circuit for enabling the count of one period counter with a predetermined delay with respect to the time of call-up of each corresponding storage cell, and bistable multivibrators for inverti

Abstract: In a method of correcting a signal having a sequence of binary bits modulated on a carrier and followed by demodulation of the signal, and wherein a distortion has been impressed on the signal during passage through a transmission channel, the steps include setting initial threshold values in dependence of initial reception conditions and wherein the threshold values normally vary as a function of time with a bit duration, comparing the demodulated signal several times within the bit duration with the set threshold values, and correcting the initially set threshold values in dependence of later reception conditions following the initial reception conditions.