SU701346A1 - Optical operating storage device - Google Patents

Description

one

The invention relates to the field of computer technology and can be used in systems for operational processing of large amounts of information.

An optical storage device (RAM) is known, which contains a radiation source, an address system, a recording medium, photodetector arrays and point sources of spherical waves that illuminate the entire or significant area of the recording medium used for recording and reading both useful information and associative and polling characteristics l3 .

However, in the known device, it is necessary to illuminate both when recording and when reading large areas of the recording medium. This leads to increased requirements for the sensitivity of reverse recording media, photoreceivers and their characteristics, a sharp decrease in device performance and recording density, as well as the possibility of associative search for information pages only. In addition, volumetric recording media must be used in this device.

The closest technical solution is an optical storage device with recording, reading and erasing information containing the radiation source, the address system, forming optics, controlled transparency, reversing recording medium, photodetector array and control device.

This device can only address processing information.

The purpose of the invention is to expand the functionality of the device by ensuring its operation in the associative mode of sampling information.

This is achieved by introducing a beam-splitting element, a second beam focusing unit and a second photodetector array, the input of the beam-splitting element is optically connected to the first beam focusing unit, the first output of the beam-splitting element is optically connected through the second focusing block, the second matrix of the photodetectors, and the second the output of the beam-splitting element is optically coupled to the first matrix of photodetectors, the outputs of the second photodetector array are connected to

a control unit whose output is connected to the beam-splitting element, as well as an additional beam-splitting element is inserted into it., a second beam forming unit, a second controlled transparency, a third beam focusing unit, a third matrix of photodetectors, and the input of the additional beam-splitting element is optically connected to the second output beam splitting element, the first output of the additional beam splitting element is optically coupled through successively located second beam forming unit, the second control The transparency and the third beam focusing unit with the third matrix of photodetectors, the output of which is connected to the control unit, the second output of the additional beam-splitting element, are optically connected to the first matrix of photodetectors, the outputs of the control unit are connected to the additional beam-separating element, to the second controllable transparency and the third matrix photodetectors.

The drawing shows the optical layout of the device.

The device contains a radiation source 1, a beam addressing unit 2 with an optical system 3, providing both an arbitrary predetermined addressing of the light beams during recording, reading and erasing, as well as simultaneous highlighting of the entire address raster of the light beams during associative information processing. The radiation source can be, for example, lasers, radiation diodes, injection lasers, etc., and, for example, an electro-optical system, arrays of radiation diodes or lasers, a scanner, etc. can be used as scattering systems. Further, the device comprises a beam forming unit 4, a controlled transparency 5, performing spatial-temporal modulation of the light beam in accordance with the code intended for recording information, or in accordance with the indication of interrogation in associative information search, a beam focusing unit 6, reversible information carrier 7, with an optical readout unit 8. As a carrier, for example, a photovoltaic crystal (e.g., bismuth silicate) can be used, on which information is stored in the form of separate frames — pages, for example, in a vapor-phase code, or any suitable medium that allows recording, reading and erasing information.

The device includes beam-splitting elements 9 and 10, for example, beam-splitting prisms that are sensitive to the polarization plane, or semi-transparent mirrors separating

an optical circuit for channel I of an associative information page search, in which the second beam focusing unit 11 and the photodetector matrix 12 are located, the main information reading channel TI, in which the beam-splitting element 10 and the photodetector matrix 13 and

The in channel of the associative word search (word block) in which the beam forming unit 14 is located, the guided transparency 15, the beam focusing unit 16 and the photodetector matrix 17. The beam splitting elements 9 and 10 or split the light beam into. three channels or switch the entire light beam from one channel to another.

The photodetector matrix 12 performs the determination of the address of an information page (frame) in an associative search for an information page, 13 records information that is read as both the entire frame and individual words (word blocks), 17 determines the word address (word block) inside the information page.

Managed transparency 15 performs spatial-temporal modulation of the light beam in accordance with the reverse, the code of the sign of the interrogation of a word (block of words).

The control unit 18 controls writing, reading, erasing in associative and address processing of information.

When address processing information, the device operates as follows.

In recording mode, radiation source 1 is operating at a wavelength of% .vn. On command from block 18, the light beam by block 2 is set to the position corresponding to the address of the microframe to which information is to be recorded. The controllable banner 5 displays the code of the recorded information received by the command from block 18 from any external source of information, for example, any type of memory, processor, etc. (not shown in the drawing). The light beam is expanded by the beam forming unit 4 to the dimensions of the controlled Transparency 5 and then using the beam focusing unit illuminates the portion of the photosensitive medium 7 corresponding to the address given by the block 2. As the light beam is modulated by the control transparency 5, the beam is projected in the carrier plane a thumbnail image of the code displayed on the controllable banner 5. On the carrier 7, for example, on a command from block 18, a voltage is applied. Upon completion of the recording of the micro-frame, the voltage from the carrier 7, for example, is removed.

In the information reading mode, the radiation source 1 is operating at a wavelength. Block 18 switches all working cells of the controlled transparency 5 into the light transmission mode. On command from block 18, the beam of light by block 2 is set to the position corresponding to the address of the readable micro-frame. The illumination of the micro frame is carried out by the same optical system as in the recording of the micro frame. The magnified image of the microframe with the help of the optical system 8 and the beam-splitting elements 9 and 10 (the element 9, for example, block 18 applies voltage), is projected into the plane of the array 13 of photodetectors and is read by it from the block 18.

In the information erase mode, the radiation source 1 operates at the wavelength. If it is necessary to erase any information page on a command from block 18, all cells of the controllable transparency 5 are converted into EUJIM light transmission. The optical system works in the same way as in the information recording mode.

When erasing a word (block of words), block 18 puts into operation only those cells of the controllable transparency 5, the information in which is to be erased and rewritten, the remaining cells are masked.

When associative information processing device operates as follows.

In the associative search mode of the information page, the source 1 of the moon operates at the Vtyur wavelength and the block 18 highlights the entire address raster of the light beams of block 2 (for example, a quarter of the wave voltages are applied to all cells of the electro-optical system). In cells of controlled transparency 5, provided for associative page attribute (microframe), block 18 displays the return code of the interrogation attribute, the remaining cells controlled by the transparency are masked. The light distribution from the plane of the information carrier using the optical readout unit 8 and the beam focusing unit 11 is projected onto a matrix of 12 photodetectors in the form of a raster of light points. The raster image of point sources is transferred to the plane of location of the matrix of 12 photo receivers.

If one (or several) of the associative features coincided with the indication of the survey, then the total signal received from the corresponding photodetector (group of photodetectors) of matrix 12 will be equal to zero. The address of this photodetector (group of photodetectors in the matrix 12 corresponds to the desired address of the microframe on the carrier. By

to the command from block 18, the device is transferred to the address reading mode at the found address described above.

In the mode of associative search of a word (block of words) in the information page, block 2 operates in the mode of address reading. All cells of the controlled transparency 5 intended for associative features of words (word blocks) are transferred to transmission by block 18, and all other cells can be masked. With the help of beam splitting elements 9 and 10 (for elements 9 and 10, for example, voltage is applied) the readable beam

5 is sent to an associative word search channel (word block). Using a beam forming unit 14, associative features of words (word blocks) are designed and combined on a controllable transparency 15, on which block 18 displays, for example, the reverse code of a word polling feature (word block). Optical multiplication of a poll tag by associative features of all words (blocks

5 words) of this information page. The resulting light distribution is projected by the beam focusing unit 16 onto the array of 17 photodetectors. If one of the associative codes

0 signs of words (blocks of words) coincided with the code of a sign of a poll, then the total signal received from the corresponding photodetector (group of photodetectors) of matrix 17 will be equal to

5 zero. The address of this photodetector (photodetectors) in the matrix 17 corresponds to the desired word (block of words) in the information page. Basic information is read at this address according to a command from block 18 using an array of 13 photodetectors in the address read mode.

Recording information in the memory can be done by one of the following

5 ways: at the address, on the basis of, with step distribution, with the sorting of information.

Erasing information can be done either by address, while

0 the device operates in the address mode described above or on the basis of that, the page or word (block of words) to be erased is found when the device is operating.

5 in the associative search mode. Thereafter, erasing the page is performed by a command from block 18 in the usual way, in which all cells of the controllable transparency 5 are switched to the transmission mode. When STO, words (block of words) are in pass mode, block 18 transfers only those cells of a controllable transparency 5, in which information should be erased and T1 is rerecorded.

five

The use of the proposed device makes it possible to perform a parallel associative search over an array of 10 binary characters and to increase the speed of memory devices several times.

The use of this memory in computing systems will allow you to efficiently manage information retrieval in operational memory, dynamically allocate memory by instrumental means, implement associative virtual memory and speed up the exchange of information between different levels of machine memory, implement hardware implementation of translator and parts. operating system, etc. The associative principle of information exchange with external storage devices and the search for information in large data arrays simplifies the operating system and velichivaet its performance.

Claims (2)

1. Optical operational storage device comprising sequentially located and optically coupled radiation source, beam addressing unit, first beamforming unit, first control transparency, first beam focusing unit, reverse information carrier, optical readout unit, first photodetector array, and control unit The outputs of which are connected to the radiation source, the first controlled transparency, the reversible information carrier and the first matrix of photoprofessionals, are determined by In order to expand the functionality of the device for ensuring its operation in the associative data sampling mode, a beam splitting element, a second beam focusing unit and a second array of photodetectors have been introduced, the input of the beam-splitting element is optically coupled to the optical readout unit, the first output of the beam-splitting element is optical connected via the second beam focusing unit to the second matrix of photodetectors; the second output of the beam-splitting element is optically coupled to the first matrix of photoprints In addition, the outputs of the second array of photodetectors are connected to the control unit, the output of which is connected to the beam-splitting element. 2. The device according to claim 1, wherein the additional beam splitter, the second beamforming unit, the second controlled transparency, the third beam focusing unit, the third array of photodetectors, and the input of the additional beam splitting element are optically connected are inserted into it. the second output of the beam-splitting element, the first output of the additional beam-splitting element is optically coupled through the sequentially located second beamforming unit, the second controllable transparency and the third unit fock -focusing the beam from the third matrix of photodetectors, wherein the output is connected to the control unit, the second output svetodeliteltfDro additional element optically coupled to the first array of photodetectors, the outputs of the control unit are connected to the additional beam splitter eleentu to the controlled second transarantu. Sources of information taken into account in the examination 1.IEEE Traus, 1970, Dec., C-19, W 12, p. 1174-1184. 2. US patent 3902788, 1975, l. 350-150 (prototype).