SU860098A1 - Optical electronic multiplying device - Google Patents

Description

The invention relates to computer technology, in particular to optoelectronics, and can be used in the manufacture of computer technology optical direction. An optoelectronic device is known that contains aperture arrays, scanstors, a DC source, a triangular pulse generator, the first output connected to one of the inputs of a parallel adder, each scanstor made in the form of a three-layer semiconductor structure, for example, with layers alternating types of conduction, scanstors are installed along the corresponding diagonals of the matrices of the diaphragms and facing them with a photosensitive layer, layers of dividers for yarn scanners connect They are connected to each other in series and connected to a DC source connected to the second input of the triangular pulse generator, and the pins of the photosensitive layers of each scanner are connected respectively to the other inputs of the parallel adder 1. The optical-electronic device containing this Electron beam tube, controlled Apertures and light lines, in which the arithmetic multiplication of binary numbers is performed using a group of luminous. The poses are located along the side diagonals of the array of controllable diaphragms placed in front of the tube screen and associated with the photosensitive inputs of the parallel-adder 2. The disadvantages of these multiplying devices are the complexity of the circuit and the large amount of equipment due to the use of an electronic tube or other scanning devices, the inclusion in the circuit of the adder the parallel action of light lines, the low speed of the devices. The purpose of the invention is to increase the speed and simplify the device. The goal is achieved by the fact that a light source, a collimator, the first and second optical transparencies and a photodetector are sequentially installed on the same optical axis, an optical filter, a collective optical system and a digital recording unit, are added to an optoelectronic multiplying device,

the entrance of which is connected to the output of the photodetection, which is connected with the entrance to the output -: m of the collecting optical system; the input of the cathode through the optical filter is connected with the output of the second optical transparency, the optical filter is made in the form of a matrix optical transparency, the diameters of the adjacent light-transmitting cells located in the rows and columns of the matrix, change by a ratio of 2 times, where (and 0, l, 2, ... w).

FIG. 1 shows the functionality of the optoelectronic circuit. the device, in FIG. 2 - optical filter, general view, in FIG. 3. Optical transparency corresponding to the first factor A; in fig. 4 - the same, corresponds to the second factor B; in fig. 5 is a picture obtained with the passage of light through two transparencies and the corresponding product of numbers AB.

The optoelectronic multiplying device (Fig. 1) consists of a light source 1, a collimator 2, creating a uniform luminous flux. Behind the collimator 2, the first and second optical transparencies 3 and 4, the optical filter 5, the collecting optical system b and the photocell 7 are successively arranged. The product of numbers is recorded by a digital recording unit B, for example, a digital voltmeter can be used in the proposed device.

Optical transparencies 3 and 4 have a matrix structure and reproduce multiplied binary numbers. FIG. Figures 3, 4 and 5 show a specific type of transparency for the numbers iv and B and their product AB. The number A is perforated with stulbans and forms a column matrix. Number B Forms a line matrix. Row and column bits increase respectively from top to bottom and from left to right.

The optical filter 5 is a transparency having a matrix structure with rows and columns of holes. The number of rows and columns is the same as the number of bits of the numbers to be multiplied. FIG. Figure 2 shows the filter string for multiplying three-bit binary numbers. The dashed lines show the main and side diagonals of the filter mask where the holes of the same diameter are located. The diameters of the holes located on adjacent diagonals of the filter differ from each other by a factor of 2 {and O, 1.2, ...). Holes located diagonally under the number W, will have the largest diameter of the fish units.

Such a choice of hole diameters causes the transmission of the luminous flux in proportion to the weight value of the digit digits in the product.

The structure of the filter 5 in combination with the collimator 2 of the light and the photocell 7 allows the flow to be integrated across all channels of the optical path, thereby increasing the speed.

The energy of the light flux passing through any hole on the diagonal of the filter mask 5 is determined by the expressions W, At

I. H.

where E is the energy of the light beam, related to the unit of the surface and the unit of time) D-L is the observation time interval;

5,. ,, 5ts- hole area; I vu n the energy of the light beams, 1) ar and emanating from the holes

d-iidj. . 3 diameters. The energy of a light beam passing through a hole lying on the higher-order diagonal is related to the energy passing through the hole lying on the lower-order diagonal, like

,,,,

where VI 1,2, ... .

The device works in the following way.

The light beam from the light source falls on the collimator 2, from which comes a parallel and uniform beam of light. This light beam passes through the combined transparencies 3 and 4, while the cross section of the light bunch takes the form of a matrix structure and displays the product of multiply 1 “numbers, but the energy of this bunch is not proportional to the product of numbers. Passing further through the filter 5, the light beam is transfused, partially absorbed and converted into a light beam whose energy is proportional to the product of numbers. .

A collective optical system b sends a light photocell 7, which converts light into an electrical signal. The voltage at the output of the photocell 7 is proportional to the energy of the light beam, and therefore proportional to the product of numbers. A digital voltmeter 8 registers, on a scale graduated in binary numbers, the result of the analogue product of numbers.

In the case of obtaining the product of two numbers A (010) of FIG. 3 and B (101) of FIG. 4 in the matrix product of FIG. The 5th light will pass through only one cell in the diagonal x of the 2nd and 4th bits, i.e. and I 4. Then Wg is early 2 conventional units, aW4-8 conventional units. The total energy of VW is 10 conventional units, which in binary numbering system corresponds to the product of selected numbers equal to 1010.

The time for performing the multiplication operation is determined only by the time of passage of light along the optical path, which is negligible, and the response time of the photocell 7 and the digital voltmeter 8.

Claims (2)

Invention Formula An optoelectronic multiplying device containing a light source, a collimator, a first and a second optical transparencies and a photodetector sequentially installed on the same optical axis, characterized in that, in order to increase speed and simplify the device, an optical filter, a collective optical system and digital recording | jokxofl of which is connected to the photodetector output, which input is connected with the output of the collecting optical system, the input of which through the optical filter is connected with the output of the second optical transparency, the optical filter being made in the form of a matrix optical transparency, in which the diameters of adjacent light transmitting the cells located in the rows and columns of the matrix are changed by a ratio of 2 times, where AND 0,1,2, ... w. Sources of information taken into account during the examination 1, USSR Author's Certificate No. 463969, cl. Q06 P 7/56, 1973. 2. Authors certificate of the USSR 285350. cl. G06 F 7/56, 1969 (prototype).