SU1711232A1 - Multichannel associative optical correlator for storage device - Google Patents

Abstract

The invention relates to computing. A multichannel associative optical correlator solves the problem of associative information retrieval by many polling features by optical methods in various types of storage devices. The aim of the invention is to improve the performance and reliability of the correlator. The correlator contains a multichannel spectral radiating unit 1 for inputting information into the correlator in the form of light beams, a group of 2 light-guided multiplexers for combining groups of light beams with different wavelengths into single multi-color beams, a light-guiding multiplexer for combining multi-color sm beams received at the outputs of a group of multiplexers into a single multicolor light beam, a light-guiding demultiplexer 4xl for multiplying a single multicolor light beam into many 5 multicolor board beams, group 5: light-wave demultiplexers, each and every one of the multiplication of the multicolor light beam, multi-channel optical modulator 6 for displaying bnj dew signs, block 7 light guides for transmitting light signals, block spectral demultiplexers 8 for separating a multicolor light beam for the monochromatic beams comprising it, a block of 9 photodetectors for detecting 1 coincidence of features, and a block of control 10. S Il.

Description

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- The invention relates to computing and can be used, for example, in conjunction with storage devices of various types (opto-electronic, magnetic, electronic, etc.) for associative information retrieval,

The purpose of the invention is to increase the speed and reliability of the correlator.

Figures 1 and 2 show the scheme of a multichannel associative optical correlator for a memory device, orthogonal projections; FIG. 3 is a block diagram of a control unit.

The multichannel associative optical correlator for a memory device contains a multichannel spectral radiating unit 1, a group of 2 light-guided multiplexers, a light-guiding multiplexer 3, a light-guiding demultiplexer 4, a group of 5 light-guided demultiplexers, a multichannel optical modulator 6, a block of 7 light guides, & spectral demultiplexers, unit 9 photodetectors and unit 10 controls.

The multichannel spectral radiating unit 1 is intended for inputting, for example, associative features into the correlator in the form of light beams. In this case, the bits of each feature are represented by light beams with the same wavelength (different from the wavelengths on which other features are displayed) and entered into the correlator by the same radiating elements. Unit 1 may consist, for example, of an array of laser diodes, each of which radiates at its particular wavelength.

Each fiber optic group 2 multiplexer is designed to combine a group of light beams with different wavelengths into a single multi-wave (multi-color) light beam and can be performed, for example, as a fiber-optic or integrated-optical wave multiplexer or combiner, or as a waveguide lens.

The light guide multiplexer 3 is designed to combine the multicolor light beams obtained at the outputs of group 2 light guide multiplexers into a single multicolor light beam. The multiplexer 3 can be made, for example, of a fiber-optic or integrated-optical waveguide multiplexer or a combiner, or in the form of a waveguide lens.

The light guide demultiplexer 4 is designed to propagate a single multi-wave (multicolor) light beam,

received at the output of the multiplexer 3, on a variety of multicolor light beams and can be performed, for example, in the form of a fiber-optic or integrated-optical waveguide demultiplexer or a splitter.

Each fiber optic group 5 demultiplexer is designed to propagate a multiwave (multicolor) light

0 beam at the corresponding output of the demultiplexer 4 on a variety of multicolor light beams and can be performed, for example, in the form of a fiber-optic or integrated-optical waveguide

5 demultiplexer or splitter.

The multichannel optical modulator 6 is designed, for example, to display the polling features and can be performed, for example, in an integral form on

0 based on an electro-optical crystal.

The fiber module 7 is designed to transmit light signals and can be made, for example, in the form of a matrix of fiber or integrated optical fibers.

5 Each spectral demultiplexer of unit 8 is designed to separate the multi-wave (multi-color) light beam into its single-wave (single-color) beams and can be performed, for example, based on fused couplers of single-mode fiber

light guides or integral light guides,

or corrugated waveguide structures.

The photodetector unit 9 serves to determine the coincidence of the associative attributes of information with the polling signs and can be performed, for example, in the form of an integral matrix of photodetectors.

The control unit 10 provides the operation of the correlator and may consist, for example, of an input / output channel 11, a clock generator 12, a buffer drive 13, a control signal generator 14, a buffer storage device 15, a control signal generator 16 and 17. drive 18.

Multichannel associative optical correlator works as follows.

0 At the generator command, 12 sync pulses from channel 11 of input-output p (where n is 1,2,3 t, t is the number of radiating elements in block 1) of associative features through buffer buffer 13 and shaper 14 arrive at the multichannel spectral radiative block 1 ,

that, for example, bits p (where p is 1,2,3S,

a S is the maximum bit of a sign) of each sign are received successively on the same radiator of block 1,:

corresponding to this feature. Block 1 converts electrical signals, for example, in such a way that all p discharge of the nth associative feature corresponds to its own Al wavelength of light. In this case, the bits of different n'th features are represented by beams with different wavelengths, i.e. for example Ah Az Ap. These optical signals display, for example, associative features in the Reed-Muller code ,. whose binary signs are represented in the Manchester direct code, followed by reference signals in time. Operative signals for all ri signs are formed, for example, when all n emitting elements of unit 1 emit light, for example, at appropriate wavelengths, i.e. display 1 in simple code.

By command of generator 12 from channel 1 f

input-output, to (where k 1,2,3g, 1 g - the number

The light valve cells in the modulator 6) the polling indications through the accumulator 15 and the imaging unit 16 arrive at the modulator 6, for example, so that the bits p of each interrogation attribute arrive sequentially on the same modulator cell 6, corresponding to this attribute . In this case, each cell of the modulator 6 displays, for example, the bits of the corresponding survey tag in the Reed-Muller code, the binary signs of which are represented in the reverse Manchester code, followed by the reference signal in time. In this case, the reference signal displays T in a simple code, i.e. all modulator cells 6, for example, are open.

From block 1, optical signals are sent to a group of 2 multiplexers (Fig. 2), each of which combines, for example, a row of light beams that display the same p-th bits corresponding to the row of the matrix of the nth associative signs, multicolor bunch. These multicolor light beams obtained at the outputs of group 2 multiplexers, multiplexer 3 (Fig. 1) are combined into an n-color light beam, which is demultiplexed 4 (figure 2) and group 5 demultiplexers (figure 1) multiplied by k n-color light beams. Each such n-color light beam is directed to the corresponding cell of the multichannel modulator 6, displaying the k-th poll sign.

Since the light beams that display the same p-e binary bits of all n associative features at different wavelengths at the same time pass through all the cells of modulator 6, which display the p-th bits of all k characteristics of the polling, each n is multiplied associative feature for all k survey characteristics and, moreover, the optical signals of the products are spectrally separated.

Each n-color light beam corresponding to the k-th cell of the modulator 6 enters through the corresponding light guide of block 7 to the corresponding k-th spectral demultiplexer of block 8. This demultiplexer of block 8 directs every n-th spectral component of a multicolor light beam. on the corresponding k k th photodetector of block 9. At the same time, the photoreceiver element of block 9 with coordinates nk registers an optical signal corresponding to the nth associative feature and the kth interrogation feature. .

At the command of the generator 12, the driver 17 supplies, for example, a voltage to the block 9. The coordinates .k and n of the photodetector element of block 9, at which the optical reference signal exceeds the total optical signal of the main bits, determine the kth interrogation sign and n- th associative feature for which a coincidence occurred. At the command of the generator 12, the code of the address nk-ro of the photolarium element from block 9 is transmitted through the drive 18 to the input-output channel 11. Thus, the determination of an associative attribute address is made from a plurality of associative features and a polling attribute address from a plurality of polling attributes for which a match has occurred.

Claims (1)

Invention Formula A multichannel associative optical correlator for a memory device containing a multichannel spectral radiating unit, a light-frequency multiplexer whose output is connected to the input of a light-guide demultiplexer, a multichannel optical modulator, a unit, photodetectors and a control unit, with the first and third outputs of which are connected respectively to control inputs of a multichannel spectral radiation unit, a multichannel optical modulator and a photodetector unit, the output of which is connected n to the address input of the control unit, characterized in that in order to improve performance and reliability of the correlator, it introduced a group of light-water multiplexers group svetovod- GOVERNMENTAL demultiplexers, optical fibers block and the block of spectral demultiplexers, wherein each group of multi-channel spectral radiant output the unit is optically associated with a group of inputs of the corresponding one; a multiplexer group of fiber optic multiplexers, the output of each of which is optically connected to the corresponding input of the fiber optic multiplexer, each output of the fiber optic demultiplexer is optically connected to the input of the corresponding demultiplexer group of optical fiber demultiplexers whose outputs are optically connected to the corresponding inputs of the multichannel optical modulator, each output of which is corresponding the light guide of the light guide block is optically coupled to the input of the corresponding group demultiplexer Spectral demultiplexers, each output of which is optically coupled to a corresponding input unit photodetectors. / 2 FIG. one 1 x to otd