SU1510088A2 - Code-to-time interval converter - Google Patents

Abstract

The invention relates to automation and computing and can be used in information conversion devices. The purpose of the invention is to improve the accuracy of the conversion. The device works as follows. The enabling signal from the input bus 7 through triggers 2-4 and element 5 on the clock frequency of the generator 1 information from the input bus 8 is entered into the counter 6 pulses and through the decoder 9 and additional element 10 registers the beginning of the time interval on the bus 12 additional trigger 11 When all the outputs of the pulse counter 6 are zero, the trigger 11 is set to the initial state and the end of the time interval is fixed at its output. 2 Il.

Description

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The invention relates to automation, telemechanics and computer technology, can be used in devices for converting, encoding information and is an improvement of the device according to the author. No. 1279072.

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

Figure 1 shows the functional diagram of the proposed Converter; figure 2 - diagram of the work.

The code-time interval converter contains the generator of 1 pulses: the first 2, second 3 and third 4 triggers, element 5, pulse counter 6, start bus 7, input code bus 8, decoder 9, additional element 10, additional trigger 11 and you front tire 12.

Conversion; ovatel code - time interval works as follows.

In the initial state, the triggers 2 and 3 and the pulse counter 6 are in the zero position, at the output of the overflow of the pulse counter 6 there is a dinic potential that holds the trigger 4 in the unit position, and the trigger 11 is in the zero, the unit potential on D and R -in trigger entries

2 allows it to work on a clock input. Tire 8 is supplied with a code that is converted into a time interval before a start pulse is applied to bus 7.

When a trigger signal appears on bus 7 (Fig. 2.7), trigger 2 is set to one on the leading edge of this signal (Fig. 2.2). A single signal from the output of flip-flop 2 is fed to the D-input (information input) of flip-flop 3. At the moment of termination of the first after the given pulse signal from the generator 1,

3 is set to a single state, (FIG. 2.3) and a single signal with

of its output, a code located on the tires 8 is written to the counter 6. At the output of the overflow of the pulse counter 6, a zero signal appears and, as a result, the trigger 2 is set to the zero position, and its operation in the clock C-inlet is prohibited trigger 4 is enabled at a clock C input. At the time of the end of the next pulse from the generator 1, the triggers 3 and 4 are set to zero (Figures 2.3 and 2.4). Since the signal ended at the single output of the trigger 3, the operation of the counter 6 on the counting (subtracting) input is allowed (Fig. 2.5). A single signal from the zero output of the trigger 4 passes through the element I 10 to the information input and the zero reset input of the trigger 11, allowing its operation at the clock C input. At the moment of arrival of the next pulse from the generator 1, the trigger 11 is set to one state, fixing the beginning of the time interval (Fig.2.11). A single signal from the zero output of the trigger 4 opens the element And 5, through which the pulses from the generator 1 begin to pass to the subtractive input of the counter. 6 pulses (Fig. 2.5). At the same time, each pulse at its leading edge reduces by one the contents of counter 6. Once all the bit (information) outputs of the snetchik 6 are zero, the output of the decoder 9 also sets zero (Fig. 2.9), which through element 10 will set the trigger 11 to zero, state (FIG. 2.11), fixing the end of the time interval. At the moment of termination, a single signal appears at the subtracting input of the counter 6 of the pulse that recorded the number O, which sets the trigger 4 to the single state, enables the trigger 2 to operate at the clock input, and the device returns to its original state.

The timing diagram (Figures 2.4 and 2. 11) illustrates the improvement in accuracy.

the proposed converter as compared to the known one due to the complete coincidence of the time interval of the clock frequency to its synchronization frequency.

Claims (1)

Invention Formula Converter code-time interval auth.St. I 1279072, about t of l of- ch. In order to improve the accuracy of the conversion, a decoder is inserted into it and between the output of the third trigger and the output bus there are series-connected additional element And and the trigger, the clock input of which is connected to the output of the pulse generator, the zero input is combined with the information input of the additional solo trigger, and the second input additional element And pod515100886 keys to the output of the decoder, the inputs of the discrete discharge outputs of the counter which is connected with the corresponding. bpuls Phys .2