SU711886A1 - Assoctiative-and-address optical memory - Google Patents

Abstract

ASSOCIATIVE AND ADDRESS OPTICAL RECORDING DEVICE '. containing a sequentially arranged and optically coupled first radiation source, a first beam addressing unit, a collimator, a first beam forming unit, a first guided transparency, a first beam focusing unit, a first beam-splitting element, the first output of which is optically connected to the / second a beamforming unit, and a second output with a second beam-splitting element, the first optical sensor array is mounted on the first optical output, and the third beam-forming unit optically coupled through the second controllable transparency and a second beam focusing unit with a second matrix of photodetectors, a third beam focusing unit optically connected to the third array of photodetectors, a control unit whose outputs are connected to the first radiation source, the first beam addressing unit, the first and second controlled transparency, the second beam-splitting element and arrays of photodetectors, o t, which is characterized by the fact that, in order to expand the functional capabilities of the device by providing simultaneous-work in recording modes, In the device, a semitransparent reflective information carrier, a third beam-splitting element, a third beam forming unit, a second beam addressing unit and a second radiation source are inserted into the device, and the second radiation source is optically coupled through successively located second block addressing the beam, the third beamforming unit with the third beam-splitting element, the first output of which is optically coupled through a semitransparent reflective medium information with the second beamforming unit, and the second output with the third beam focusing unit, the outputs of the control unit are connected to the second radiation source, the second beam addressing unit, the third beam-splitting element and .i (Ls: 00cx a: > &

Description

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

Associative optical memory devices l are known, containing a radiation source, an adrenal 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 signs and survey signs. The main disadvantage of these devices, which impedes their implementation, is the need to illuminate both when recording and when reading large areas of the recording medium. This leads to increased demands on the sensitivity of reversing 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, these devices need to use volumetric recording media.

The closest technical solution to the invention is an associative-address optical memory device containing radiation sources, an address system, forming optics, controllable transparencies, a reversible storage medium, photo-receiving arrays and a control device. 2

The disadvantage of this device is the possibility of its simultaneous operation, only in one of the modes of address or associative information processing.

The purpose of the invention is to enable the simultaneous operation of the device in the modes of recording, reading, erasing and associative selection of information and operation. tive control.

This goal is achieved in that an optical random access memory device containing sequentially arranged and optically coupled first radiation source, a first beam addressing unit, a first beam forming unit, a first controlled transparency, a first beam focusing unit, a second beam forming unit, and optically coupled the second beam-focusing unit and the first array of photodetectors, as well as containing its first beam-splitting element, the first of which is connected with the second beam-splitting element, on the first op In this way, a first matrix of photodetectors is installed, and the second output is optically connected with successively located third beam forming unit 5, a second guided transparency, a third beam focusing unit and a third matrix of photodetectors, and a control unit whose outputs are connected to a radiation source, a beam-addressing unit, controllable transparency and photodetector arrays, a semitransparent reflective information carrier, a second radiation source, are introduced,

5, a second beam addressing unit, a third beamforming unit, a third beam-splitting element, the second radiation source being optically coupled through successively located

Q is the second beam addressing unit and the third beamforming unit with the input of the third beam-splitting element, the first output of the third beam-splitting element is optically connected through a semitransparent reflective information carrier and the second block, forming the beam with the second output of the first beam-splitting element, and the second output of the third beam-splitting element optically coupled to

0 second beam focusing unit.

The outputs of the control unit are connected to the second radiation source, the second beam addressing unit, the second and third beam-splitting element 5 Rents and a semi-transparent reflective information carrier.

The drawing shows an optical block diagram of the proposed device.

0 The device contains a radiation source 1, a beam addressing unit 2 with an optical system 3, which at the output gives light beams at the recording wavelength (-ian) f of reading (reading) and

g erase (Yastir) g providing both an arbitrary predetermined still of the light beams during recording, reading and erasing, as well as simultaneous flashing of the entire address raster of the swat beams with an associative

 processing information (emitters of light can be, for example, lasers, radiation diodes, injection lasers, etc.), and, for example, an electro-optical deflection system of a matrix of radiation diodes or lasers, a scan laser, and so on can be used as address systems , e.), a beamforming unit 4, controlled transparency 5, ocs allowing for 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, b beam focusing.

Beam splitting elements 7 (12,18 for example Beam splitting cubes sensitive to the polarization plane or semitransparent mirrors dividing the optical scheme into a channel (1) of an associative search information page, in which the beam-forming unit 8 is located, beam-splitting element 18 , a beam focusing unit 10 and a photodetector device 11, an information reading channel (II) in which the beam-splitting element 12 and a photodetector device 13 are located, an associative word search channel (III) (block c) in which the beam forming unit 14, controlled transparency 15, the beam focusing unit 16 and the photoreceiver 17, the additional channel (IV) in which the beam forming unit 19, the beam addressing unit 20 and the radiation source 21 are located, are located. elements 7,12,18 or switch the light beam from one channel to another, or divide the light beam into separate channels.

As the information carrier 9, for example, a photovoltaic crystal (e.g. bismuth silicate) can be used, on which information is stored in the form of separate page microframes, for example, in a paraphase code r or any suitable medium that can be written, read and erase information.

The photodetector II determines the address of the information page (microframe) in the case of an associative information search; the photoreceiver 13 - reads useful information; the device 17 determines the address of a word (a block of words in an associative search for information inside the page).

Managed transparency (UT) 15 performs spatio-temporal modulation of the transmitted light beam in accordance with the reverse code of the word polling sign (word block),

The control unit (CU) 22 controls the writing, reading, erasing during associative and address processing of information.

When address processing information in the recording and erasing modes, this device works in the same way as the device accepted as a prototype.

The reading of information in the device is impaired / 1 as follows.

In the information reading mode, the radiation source 1 operates at the wavelength f, the control unit 22 places the working cell of the transparency 5 into the transmission mode.

Sveta. At the command of block 22, the beam of light by block 2 is set to the position corresponding to the address of the readable microframe. The illumination of the micro frame is carried out by the same optical system as in the recording of this micro frame. The image of the micro-frame reflected from the recording medium is enlarged by block 8 and is directed by it and the beam-splitting elements 7 and 12 to the array of photodetectors 13 and is read by it by the control unit 22.

With associative information processing in the modes of searching the information page, recording and erasing information, this device works in the same way as the prototype. When searching for a word (block of words), the device works as follows.

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 the associative feature of the word (block of words) are transferred to the control unit 22 by the control unit 22, the remaining cells of the transparency 5 can be masked. On the controllable banner 15, BU22 displays, for example, the inverse code of the word polling sign (block of words). The image of information read from the carrier 9 by means of block 8 and beam-splitting (light-switching) elements 7 and 12 (in this case element 12, for example, voltage is applied) is sent to channel III of the associative word search (block of words). In channel III, readable images of associative features using beamformer block 14 are designed and combined on a controllable banner 1.

Optical multiplication of a poll tag is performed for all associative attributes of words (word blocks). The resulting light distribution by the beam focusing unit 6 is projected onto the array of photodetectors 17. If one or several associative features of words (blocks of words) coincide with the indication of polling, then the total signal received from the corresponding group of photodetectors of matrix 17 will be zero. At the command of the CU 22, the matrix 13 reads out the basic information corresponding to this feature.

To enable simultaneous operation of the device in write, read (or erase at different addresses, as well as associative information processing, the following units are added to the device circuit: radiation source 21, beam addressing unit 20,

Claims (1)

An ASSOCIATIVE ADDRESS OPTICAL REMEMBERING DEVICE containing a sequentially located and optically coupled first radiation source, a first beam addressing unit, a collimator, a first beam forming unit, a first controlled transparency, a first beam focusing unit, a first beam splitting element, the first whose output is optically coupled to / the second a beam forming unit, and the second output with a second beam splitting element, on the first optical output of which the first photodetector array is installed, and on the second - third a beam forming unit optically coupled through a second controlled transparency and a second beam focusing unit with a second photodetector array, a third beam focusing unit optically coupled to a third photodetector array, a control unit whose outputs are connected to a first radiation source, a first beam addressing unit, a first and the second controlled banners, to the second beam-splitting element and the photodetector arrays, which is characterized in that, in order to expand the functionality of the device due to to ensure simultaneous operation in the modes of recording, reading, erasing, associative selection of information and conducting operational control, a translucent reflective storage medium, a third beam splitting element, a third beam forming unit, a second beam addressing unit and a second radiation source are introduced into the device, the second the radiation source is optically coupled through sequentially arranged second beam addressing unit, a third beam forming unit with a third beam splitting element, the first output of which cally connected through semi transparent reflective information medium to the second beam forming unit, and the second output - with a third beam focusing unit, wherein the control unit outputs are connected to the second radiation source, the second set of beam addressing, the beam splitter and the third semitransparent reflective storage medium.