SU598127A1 - Analogue storage - Google Patents

Description

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The invention relates to the field of computer technology and can be used as part of hybrid computers in organizing iterative procedures in functional spaces.

Magnetic analog storage devices of temporary functions are known for recording and subsequently reproducing various continuous processes that take place in time and contain either storage media (magnetic drum, tape) or chains of magnetic analog memory elements controlled by an external switch I.

The closest technical solution is an analog memory device containing a memory block connected to read pulse generators, one of which is connected to a shift register and to write pulse shapers, one of which is connected to a pulse distributor connected to tires. left shift and right shift, shift register and output of the first element And, the first input of which is connected to the write bus and pulse generator, the second input to the first delay element connected to the pulse generator connected to the bus "readout" and with the shift register directly and through the second delay element, a rectifier connected to the memory unit and through a low-pass filter with the output of the device and the subtractor unit connected to the memory unit connected to the reset bus and device input 2.

Such a device is intended to memorize the function.

Y f (t),

t e tK, t ,,

where t is the time

t (is the starting point of the closed interval,

IK is the end point of the interval, and performs automatic quantization of the interval on the equal parts of m + 1 points

to ta.tj Yes, ..., t „- /, tr ,, tn4i, ..., tm-i, tjj, i.

The memorization process is a sequential sampling of information about the nature of the function at the points of the sequence and writing it into the storage cells (bits) of the accumulator, the number of which is equal to the number of quantization points.

However, in practice, when organizing iterative procedures in functional spaces, there are often cases where the direction of change in the function’s argument when

reading is opposite to the direction in which the argument is changed when writing, i.e. read operations with time reversal. The performance of such operations known device-. impossible, which limits its possibilities.

The aim of the invention is to expand the functionality of the device by providing additional read operations with time reversal.

This is achieved by the fact that the proposed device contains a switching unit, the second, third and fourth elements AND and the trigger of the recording feature, one of the inputs of which is connected to the reset bus, the second input - to the output of the second element AND, the first input of which is connected to the "write, its second input is with the bus “left shift, the first trigger output of the write attribute is connected to one of the inputs of the third element AND, the other input of which is connected to the bus right shift, its output to the switching unit and shift register, the second trigger trigger output The records are connected to the first input of the fourth element And, the second input of which is connected to the "left shift, switching unit and shift register, its output - to the shift register and switching unit associated with the memory unit, the formers and read pulses, other pulse shaper, pulse distributor and shift register.

FIG. 1 is a block diagram of an analog storage device; in fig. 2 is an example of a memorized function Y f (t) for explaining the operation of the device.

The device contains a memory block 1, a shift register 2, a pulse distributor 3, shapers 4-8 write pulses, shapers 9-13, read pulses, rectifier 14, low-pass filter 15, 16 subtractors, switching unit 17 assembled on controlled keys and switches, a trigger 18, a write flag, elements AND 19-22, a pulse generator 23, delay elements 24 and 25, and read lines 26, records 27 and "left shift 28," right shift 29 and reset 30.

The device operates in the following modes: direct write mode, reverse write mode, direct read mode of the directly written function, reverse read mode of the reverse written function, direct read mode of the reverse written function, reverse read mode of the recorded function.

 Consider as an example the operation of the device in direct recording mode.

Before writing information to the reset bus 30, a pulse is applied, which all memory cells of memory unit 1 reset. Trigger 18 is also reset. Register 2 and valve 3 are cleared. On read tires 26 and left shift 28, control signals are absent. On LiniHy "right shift. 29 a command has been sent, therefore resr 2 and distributor 3 are prepared for shear operation

to the right. The output signals of the And 21 and 22 elements are low, so the input signal can immediately pass to the single input of the second bit.

When recording simultaneously with the input of the memorized function Y f (t) to the input of the bus, record 27 is supplied with a control signal. This signal triggers the generator 23, permits the passage of generator pulses to the input of the distributor 3 and enters the input 0 of the element I 20. The first pulse of the generator, fed to the distributor, triggers the driver 4, which produces a short current pulse. At the same time, the value of the function Y f (tl (Fig. 2) at time t 0) is written into the memory cell of the unit pa.mt. 1. The first impulse of the generator, after a time determined by the parameters of the delay element 24, records the unit in register 2. In this case, the unit passes immediately to the second bit. Then, the NOF signal of the second bit of register 2 is fed through block 17 to the input of shaper 9, which begins to operate in the mode of continuous generation of current pulses. These pulses interrogate the state of the memory cell. rectify 14 sends a sequence of pulses corresponding to the state of the first cell of the memory unit, this sequence is rectified by rectifier 14, smoothed by filter 15 and fed to the input of subtractor 16, which calculates the difference between the current value of Yf (t) and At the same time at time t 0. By the time the second pulse arrives from the output of subtractor 16, memory 1 will be incremented by 5 Y f (I) at time t 1 relative to the value of the same function at time t 0. C come th second generator pulse generator triggered valve 6 and this increment zapishets the corresponding unit cell 1. Directly after recording informa0 tion in the register 2 is performed shift (right) and record a new one. In this case, the shift is carried out by the first pulse of the generator, in -. held by the delay element 25, and the new unit is recorded by the second pulse of the generator 23 (thereby filling the register with units, which is necessary to keep the read pulse generators already running in previous cycles in the generation state). Already two memory cells are interrogated, as a result, the output of the filter 15 produces a voltage equal to the value of the function Y f (t) at time t. By the arrival of the third generator pulse, the voltage from the output of the subtractor 16 is removed, equal to the increment of the function Y f (t) at time t 2 relative to time t 1. Subsequently, if point t 2 was an internal point of the time interval, the memorization process proceeded would be ana logical. However, in this case the point t 2 is the extreme point and therefore the operation of the last (third) bit of the accumulator should be described separately. With the arrival of the third pulse, the formers 7 and 8 are started up on the distributor 3. In this case, the increment is written to one appropriate storage cell, and the full value of the function at time t 2 is written to the other storage cell. the shift (to the right) of previously recorded units (delayed in element 25 by the second pulse) and the recording of a new unit (by the third pulse), the shaper 12 is started through the closed contacts of the switch of the block 17. As a result, one Temporarily respective cells and the output filter formed by a voltage equal to the function value Y f (t) at time t 2.

This is where the direct recording process ends. The generator 37 is stopped, the register b and the distributor are reset. The trigger 32 maintains the state in which it was set before the recording, i.e. stores the sign of the record.

Next comes the storage mode information.

Claims (2)

1. Vitenberg, IM and others. Storage device for AVM ZUAM-K, Sat. "Questions radio electronics, a series of "Electronic computer technology, issue 11, 1971, p. 94. 2.Sidorov V.M. Magnetic analog storage devices of temporary functions, Sat “Magnetic elements of continuous operation, M., 1972, p. 140. f