SU505992A1 - Time shift to code converter - Google Patents

Description

one

The invention relates to radio metering technology, can be used to control the dynamic parameters of transistors, integrated circuits, delay lines.

Temporal shift converters are known in code containing two gated level discriminators, the signal inputs of which are connected respectively to the input and the output of the object under study.

The purpose of the invention is to improve the accuracy of the conversion.

The proposed converter is characterized in that the output of the object under study is connected via a one-shot to the first input of the three-input circuit "AND, the second and third inputs of which are connected respectively to the strobe pulse generation device and the number of measurements, and the output is connected to the gate inputs of the level discriminators, the output of the first discriminator connected to the summing input of the reversible counter, the subtracting input of which is connected to the output of the second discriminator through a delay element.

The drawing shows a block diagram of the Converter time shift in the code.

The outputs of the discriminators of level 1, 2 are connected respectively to the summing and through the delay element 3 to the output

the inputs of the reversible counter 4. The signal input of the discriminator 1 receives a signal from the object under study, the signal b of which is fed to the signal input of the discriminator

level 2 and the input of the one-shot 5, the output of which is connected to one of the inputs of the circuit "AND 6. The second input of the circuit" And 6 gets a strobe signal from the device generating the strobe, and the third - the signal e from

master number of measurements.

The converter works as follows.

At the initial moment of time, the signal r is equal to zero, therefore the strobe pulse arriving at the “And 6” circuit does not pass to the gate inputs of the discriminators of level 1 and 2, and to i.x. the outputs of the signals match. The conversion starts after the filing of the signal G from the setter from the number of measurements to the circuit "AND 6". At the same time, at the instant of time, the next occurrence of signals at the inputs of the level discriminators, at the output of the one-vibrator 5 is one. The strobe pulses pass through the “AND 6” circuit and arrive

The gate inputs of the discriminators 1 and 2. When they coincide in time with the signals a and b, the signals of the discriminators of the level appear at the outputs of the level discriminators. Due to the fact that using delay element 3

they are separated in time, reversible counter 4 registers them independently of each other. In this case, the coincidence signals from the discriminator 1 are sent to the summing signal, and from the discriminator 2 to the subtractive inputs of the counter. Matches are recorded until, after the set of a given amount of statistics has been collected, the signal at the input of the circuit "And 6 will not be equal to zero. To limit the interval in which coincidences may occur, when a signal is biphered, the one-shot 7 with a delay greater than the possible duration of the front generates a logical zero signal that is obviously longer than the output signal. The & 6 scheme is locked and the strobe is not supplied to the level discriminators. To the next experiment, the one-shot is in the state of "one" and from the signal b again forms a limiting coincidence signal.

Claims (1)

Invention Formula A time shift converter into a code containing two level gated discriminators, the signal inputs of which are connected respectively to the input and the output of the object under investigation, characterized in that, in order to increase the accuracy of the conversion, the output of the object under study is connected to the first input of the three-input circuit. , the second and third inputs of which are connected respectively to a device for generating a strobe pulse and a generator of the number of measurements, and the output is connected to the gate inputs of level discriminators , The output of the first discriminator connected to the summing input of down counter, whose subtracting input through a delay element coupled to an output of the second discriminator.