Optical digital associative multi-channel correlator

 

(57) Abstract:

The invention relates to computing. The technical result is to increase productivity, reliability, compactness and simplification of the structure of the correlator. Optical digital associative multi-channel correlator includes a first input buffer unit, the unit time of multiplexers, the block of spectral multiplexers, optical propagation, optical modulators, the second input buffer unit, the unit optical combining the block of spectral demultiplexes, block time and demultiplexes the output register block. Optical digital associative multi-channel correlator, solving the problem of associative data search in a variety of devices for a large number of characteristics of the survey allows for more than 10-100 times the performance, reliability, number of simultaneously processed signs and compactness of such devices. 4 C.p. f-crystals, 1 Il.

The invention relates to computer technology and can be used for associative searching of information in its various devices, such as storage devices (optoelectronic, ELEKTRA multi-associative optical correlator for mass storage devices [1] contains the unit of the optical reproduction, optical modulators, optical Association, the block of spectral and demultiplexes the block of spectral multiplexers whose outputs are optically connected with the same inputs of the optical reproduction, the optical outputs of which are connected with the same inputs of the block of optical modulators, the outputs of each group of cells which are optically connected with the same inputs of the unit optical combining whose outputs are optically connected with the same inputs of the block of spectral and demultiplexes the output of the recording unit, the output of which is the output of the correlator. The main disadvantages of this device are relatively low productivity and reliability.

The technical result is to increase the performance, reliability, and compactness, as well as simplifying the design of the correlator.

This is achieved by the fact that in optical digital associative multi-channel correlator containing optical propagation, optical modulators, optical Association, the block of spectral demultiplexes, a one-dimensional block and the block of spectral multiplexers whose outputs are optically connected with the same inputs of the unit optical combining, the optical outputs of which are connected with the same inputs of the block of spectral demultiplexes, and an output register block whose output is the output of the correlator, the entered first and second input buffer blocks, block temporary multiplexers, block time demultiplexes, and the input of the first input buffer unit is first input of the correlator, each group of outputs of the first input buffer unit associated with the same input of the corresponding multiplexer unit time of the multiplexer, the output of which is optically connected with the same input block of spectral multiplexer, the second input of the optical modulator connected to the output of the second input buffer unit, the inlet of which is the second input of the correlator, the outputs of the block of spectral demultiplexes optically associated with the same unit of time demultiplexes each group of outputs which is optically linked with the corresponding group of inputs of the output register block.

And that block of time multiplexers consists of optoelectronic multiplexers, each of which has an electrical input and optical output, and optoelectron the C optoelectronic demultiplexes, each of which has an optical input and an electrical output, and optoelectronic demultiplexes groups.

And that block of time multiplexers consists of optoelectronic multiplexers, each of which has an optical input and optical output, and optoelectronic multiplexers groups, and the block time demultiplexes consists of optoelectronic demultiplexes, each of which has optical input and optical output, and optoelectronic demultiplexes groups.

And the fact that the first and second input buffer blocks are made in the form of electronic storage devices with optical outputs, and the output register block is made in the form of an electronic storage device with optical inputs.

This set of essential features and relationships between them allows you to get a device with more than 10-100 times greater performance, the number of simultaneously processed associative signs and symptoms of the survey, reliability, and smaller size compared with the known devices and prototype.

The invention zaklinacz requirements for all parameters of optoelectronic units, including their dimensions, which leads to the possibility of the practical improvement of the volume of information, reliability, simplify the design and to achieve the capacity of 1013operas/s

Thus, the proposed device has properties that are not inherent in prior devices. This is due to a new set of essential features and new relationships outlined above.

The comparison of the proposed device with the known evidence about compliance with a criterion of "novelty", and the lack of analogues of the distinctive features of the proposed device in accordance with the criterion of "inventive step".

Drawing (a and b orthogonal projection) shows a functional diagram of an optical digital associative multi-channel correlator.

The correlator includes a first input buffer block 1, block 2 temporary multiplexers, block 3 spectral multiplexers, block 4 of the optical reproduction unit 5 of the optical modulators, the second input buffer block 6, block 7 optical Association, unit 8 spectral demultiplexes the output of the recording unit 10.

The first input buffer unit 1 receives Nam, for example, in the form of an electronic memory with electrical or optical outputs, depending on the execution unit 2. In the second case, the bits of each group of characteristics displayed by the optical signals with the same wavelength different from the wavelengths of optical signals, which display other groups of signs in block 1.

Unit 2 temporary multiplexers designed to temporarily seal the input channels. The unit 2 may be performed, for example, in groups of optoelectronic multiplexers, each of which has an electrical input and optical output, or optical inputs and outputs. In the first embodiment, the discharge of all signs appear at the output of each group of multiplexers in the form of optical signals with the same wavelength different from the wavelengths of optical signals, which display other characteristics group in block 2.

Unit 3 spectral multiplexers designed for combining optical signals with different wavelengths in the corresponding single multiwave (multi-color) optical signal and can be performed, for example, in the form of a group of fiber-optic or integrated optical combiners or in their lenses.

Unit 4 optical reproduction is intended for reproduction multiwave (multicolor) of the optical signal and can be performed, for example, in the form of a group of fiber-optic or integrated optical splitters, or a group of the waveguide lenses, or in the form of a hologram.

Unit 5 of the optical modulators is designed to display, for example, characteristics of the survey, and can be performed, for example, in the integral form based on the electro-optic crystal.

The second input buffer unit 6 is used to receive data (for example, characteristics of the survey) from external devices, their layout and storage and can be performed, for example, in the form of electronic memory.

Unit 7 optical Association is designed to unite multiwave (multi-color) optical signals corresponding to the different digits of each sign, in a single multi-wave (multi-color) optical signal, each of which corresponds to a specific characteristic. The block 7 may be performed, for example, in the form of a group of fiber-optic or integrated optical combiners, or group of integral lenses, or in the form of a hologram or a volume of the cylindrical lenses.

Unit 8 Nala into its constituent odnotonovye monochromatic signals, and can be performed, for example, on the basis of the group fused taps from a single-mode optical fibers or integrated optical fibers, or corrugated waveguide structures, or on the basis of diffraction gratings or holograms.

Unit 9 time demultiplexes is designed for temporary decompression of output channels. Unit 9 may be performed, for example, in groups of optoelectronic modules demultiplexes, each of which has either optical input and electrical output, or optical inputs and outputs.

The output of the recording unit 10 is used to determine matches associative signs with signs of farrowing their layout and storage and can be performed, for example, in the form of an electronic memory or integral matrix of photodetectors, coupled with electronic memory.

Optical digital associative multi-channel correlator operates as follows.

Associative characteristics data are served, for example, on input 1 and through the first input buffer block 1 goes on the block 2 temporary multiplexers, which provides a temporary seal of signals that show signs. Unit 2 communicates with the separation in time is a great number of inputs of each multiplexer block 2) associative signs, each of which is present on a separate m-th row inputs of the n-th row (line) of the multiplexers at a corresponding one of the n-th line of their outputs n-th row of the output unit 2. Thus, each n-th group of m associative signs at the entrance block 2 corresponds to one n-th row of optical signals at its output. This line signal displays on the n-th output block 2, all p-th (where p=1,2,3,S, S the maximum number of digits in the m-th sign n-th group) bits of the n-th group of signs on the same wavelengthnthat is different from the wavelength that shows the remaining (n-1)-th group of signs.

These optical signals reflect associative criteria, for example, or in code, reed-Muller, between binary characters which are presented in a direct two-rail code, are the reference categories in a simple code, [1] or in the code, reed-Muller binary characters which are presented in the direct code of Manchester, followed by a time reference signal. The reference signal in the latter case is formed, for example, when all the emissivity of the block elements 2, showing all the bits of each group of associative signs, emit light, i.e., indicate "1" in a simple code [1]

2 do K (where K=1,2,3,Z, Z childname which, presented in reverse two-rail code, are the reference categories in a simple code, [1] or in the code, reed-Muller binary characters which are presented in reverse the Manchester code, separated in time reference signal. Each K-th characteristic of the survey is, for example, the corresponding K-th row of the block 5, and when applying the reference signal in each K-th row of the block 5 remains open, for example, only one cell (the rest are closed), i.e., each row in the block 5 is shown only one binary "1" else "0", all in a simple code.

Below is a description of the operation of the correlator in the case of using the second encoding method.

Optical signals showing the same p-th-order bits of all n-h groups of the associative characteristics, are combined by respective multiplexers block 3 spectral multiplexers in a single n-colored optical signals. The optical unit 4 multiplication multiply these optical signals on the K rows of identical beams, which are sent to all cells of the block 5 optical modulators, showing the p-th bits of all K characteristics survey.

Since optical signals showing the same p-th binary digit of all nm-x associative when the corresponding p-th bits of all K characteristics survey it is optical multiplication of all the nm-th associative signs on all the K characteristics of the survey, and the optical signals of the works of spectral and time-separated.

Multicolor optical signals corresponding to all of the p bits of each K-th characteristic of the survey, block 7 optical associations are combined into a single signal which is supplied to the block 8 spectral demultiplexes. Unit 8 sends each n-th spectral component of the multicolor optical signal to the corresponding input unit 9 time demultiplexes, which directs every m-th time components of the signal corresponding nmK-th input of the output register unit 10. The block 10 on your entry with coordinates nmK registers the optical signal corresponding to the nm-th associative basis of the K-th characteristic of the survey. Coordinates n, m and K of the input unit 10, in which the signal from the optical reference signal exceeds the signal from the optical signal of the main discharge, determine respectively the nm-th associative characteristic and K-th characteristic of the survey, on which there was a match. The code addresses this nmK input and outputted on the output of the correlator. Thus, it is determined address associators were the same.

The use of the proposed optical digital associative multi-channel correlator will more than 10-100 times the performance, reliability, number of simultaneously processed signs and compactness of such devices.

1. Optical digital associative multi-channel correlator containing optical propagation, optical modulators, optical Association, the block of spectral and demultiplexes the block of spectral multiplexers whose outputs are optically connected with the same inputs of the optical reproduction, the optical outputs of which are connected with the same inputs of the block of optical modulators, the outputs of each group of cells which are optically connected with the same inputs of the unit optical combining whose outputs are optically connected with the same inputs of the block of spectral demultiplexes, and an output register block whose output is the output of the correlator, characterized in that the correlator is entered first and the second input buffer blocks, block temporary multiplexers, block time demultiplexes, and the input of the first input buffer unit is the first sign is adequate multiplexer unit time multiplexers, the optical output of which is connected with the same input block of spectral multiplexer, the second input of the optical modulator connected to the output of the second input buffer unit, the inlet of which is the second input of the correlator outputs of the block of spectral demultiplexes optically associated with the same unit of time demultiplexes each group of outputs which is optically linked with the corresponding group of inputs of the output register block.

2. The correlator under item 1, characterized in that the unit of time of multiplexers comprises optoelectronic multiplexers, each of which has an electrical input and optical output, and optoelectronic multiplexers groups.

3. The correlator under item 1, characterized in that the unit of time demultiplexes consists of optoelectronic demultiplexes each of which has an optical input and an electrical output, and optoelectronic demultiplexes groups.

4. The correlator under item 1, characterized in that the unit of time of multiplexers comprises optoelectronic multiplexers, each of which has an optical input and optical output, and opennig of demultiplexes, each of which has optical input and optical output, and optoelectronic demultiplexes groups

5. The correlator under item 1, characterized in that the first and second input buffer blocks are made in the form of electronic storage devices with optical outputs, and the output register block is made in the form of an electronic storage device with optical inputs.

 

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