SU999134A1 - Code converter - Google Patents

Description

(54) CODE CONVERTER

The invention relates to digital technology and can be used in various radio systems and digital computing devices to convert numbers codes;

Code converters based on scaling devices are known, which contain the first counter with one base of numbers (for example, binary), the second counter with another base of numbers (for example, decimal), the inhibitor node of counting pulses, and the control unit for operation mode 1.

Their disadvantage is the impossibility of promptly changing the conversion ratio of numbers.

The closest to the invention is in technical, technical essence and achievable result. is a converter based on the principle of simultaneous counting of pulses by two counters with different number bases 2}.

A disadvantage of the known converter is the impossibility of promptly changing the conversion ratio of the numbers, since its value is strictly determined by the structure of the converter -. At the same time, in general, a number of practical applications.

it is necessary to have a variable, including during counting, conversion factor, for example / to obtain a non-linear conversion, to compensate for systematic methodological errors, to measure or convert numbers.

The aim of the invention is to extend the functionality

10, namely, the provision of an arbitrary, including variable during the counting, value of the code conversion factor.

The stated goal is achieved by

15 that a code converter containing two prohibition blocks, whose outputs are connected to the first inputs of the first and second counters, respectively, and a mode control block,

The 20 output of which is connected to the first inputs of the prohibition blocks, to the input of the installation of the second counter and to the recording control input the code of the number being converted to the first counter is entered ne25. switches, a divider with a variable division factor and a divider coefficient sensor, the counter input of the divider with variable division factor is connected via a switch; the switch to the output of one of the first and second counters, the output of the divider with a variable division factor through another switch connected to the second the input of the second and the first block of the prohibition, the inputs of the divider control with a variable division factor are connected to the outputs of the sensor of the division coefficient, and the input of the divider with variable coke the division factor and the input of the control of the code of the sensor of the coefficient of division are connected to the second output of the mode control block. . Figure 1 shows the block diagram of the code converter; figure 2 pulse diagrams of his work. The code converter contains a mode control block 1 (Fig. 1), blocks 2 and 3. Prohibited, counters 4 and 5 sensor 6 of the division factor, divider 7 with variable division ratio (DCPD), switches 8-10. The code converter works as follows. When entering from control unit 1; laziness of the impulse-record, the passage of counting pulses through blocks 2 and 3 of the prohibition on the inputs of counters 4 and 5 is prohibited, while simultaneously setting the counter 5 to zero, DPKD 7, writing the converted number in the parallel code to the counter 4 and the recording of the division factor in the parallel code into the sensor b (Fig. 2a - ...). At the end of the recording pulse, the counters 4 and 5, the DPCD 7 are switched to the counting mode, the prohibition from blocks 2 and 3 is removed and the counters 4 and 5 start counting input pulses simultaneously during the counting interval. a (fig.2b and). At the same time, at the input of the PDKD 7, I receive pulses from one of the triggers of the counter 4 (or 5), for example, from the output of the first counting trigger of the counter 4 (Fig. 2e), and the pulses from the output of the PDKD to the prohibition input of one of the prohibition blocks 3 (or 2) (in block 2 in block 3), prohibiting part of the pulses at the input of counter 5 or 4 (in counter 2 in counter 5). The end of the counting interval corresponding to the completion of the conversion cycle, occurs at the moment when the overvoltage voltage jumps from the counter 4 at the moment of its overflow to the input of the control unit 1 (Fig. 2 K). From this point on, until the next trigger pulse is supplied from the control unit, information is retrieved from counter 5 in the parallel code. . When the next trigger pulse arrives, the described conversion cycle repeats. (Figure 2 jl, C conventionally shows the removal of the code from the first two bits of counter 5). The value of the conversion coefficient (recalculation) is determined by the bases of the number systems in counters 4 and 5, their division coefficients at the connection point of the DPDK 7 input, the division ratio of the PDKD, which can be operatively changed (in particular, during the interval of the count) coming from the sensor b. When changing the code during counting, depending on the algorithm of the sensor and the point of connection of its input, it is possible to provide various, including nonlinear, law for changing the conversion factor of the converter required in a number of applications to obtain certain conversion characteristics (for example, compensation of systematic errors ). Connecting the DCDD counting input to different counters of counters 4 or 5 with a corresponding switching of its output to the inputs of blocks 3 or 2 of the prohibition allows for a very wide range of conversion coefficient and high accuracy of setting its values while reducing the number of DPCD bits by using counter bits 4 or 5, to which its input is connected. Formula of the Invention A code converter comprising two prohibition blocks, whose outputs are connected to the first inputs of the first and second counters, respectively, as well as a mode control unit, the output of which is connected to the first inputs of the prohibition blocks, to the installation input of the second counter and the record control input of the code to be converted. in the first counter, about tl and ch yushch and also with the fact that, for the purpose of expansion of functionality of the device, the divider with a variable division factor, the sensor of coefficient dividers and switches, the counter input of the amplifier with a variable division factor is connected through a switch to the output of one of the bits of the first and second counters, the output of the divider with a variable division factor is connected through an OTHER switch to the second input of the second and first prohibition unit, the inputs of the divider control with variable the division factor is connected to the outputs of the sensor of the division coefficient, and the input of the divider installation with a variable division factor and the input of the control code write sensor The division devices are connected to the second output of the mode control block. Sources of information taken into account during the examination

1.Sukhomlinov M.M. and Vykhovanets V.V. Converters codes numbers. Kiev, Technique, 1965, about. 66-68.

2. Instruments and Experimental Technique, 1978, 5, p. 100-101 .:

(ilntitiii) 8xef

ffCnitofi

in .

 {.

) accpd.

) Lm-YASCH ,.

). .S.

/ i Sh. IpfOp. Schechlch S

l 8uKo92pp) p

 faamu k

chop5

jk) 8Hi (.uriapia. .w. "

9em..O,

tutuebKeie6 v counting interval

ri

OfteMpeatmnanna

Claims (1)

Claim A code converter containing two prohibition blocks, the output of which is connected to the first inputs of the first and second counters, respectively, as well as a mode control unit, the output of which is connected to the first inputs of the prohibition blocks, to the installation input of the second counter and to the input control code for the converted number in the first counter, characterized in that, in order to expand the functionality of the device, it additionally includes a divider with a variable division ratio, a division ratio sensor and switches, etc. than the counting input of an amplifier with a variable division ratio is connected through a switch to the output of one of the digits of the first and second counters, the output of a divider with a variable division ratio is connected through another switch to the second input of the second and first block of prohibition, the control inputs of the divider with a variable division ratio are connected to the outputs the division ratio sensor, and the installation input of the divider with a variable division ratio and the control input of the code of the division ratio sensor are connected to th output mode control unit,