SU1527670A1 - Method of recording image - Google Patents

Abstract

The invention relates to computing and can be used for recording information, for optical information processing, as well as in film photographic technology, for spatial modulation of light. The purpose of the invention is to increase speed and accuracy. The goal is achieved by projecting an optical image onto photosensitive elements and recording the intensities of optical signals, sending optical signals to a matrix of optical fibers of the same length, and registering the attenuation of each optical signal as a binary sequence. 2 Il.

Description

The invention relates to computing and can be used in the field of recording information, for optical information processing, as well as in film and photo technology, for spatial modulation of light.

The aim of the invention is to improve the speed and reliability of the recording.

Figure 1 presents a diagram of the device that implements the proposed method; Fig. 2 is a schematic diagram of a photosensitive memory element.

The device contains a matrix of photosensitive elements 1, a matrix of optical fibers 2 with integrated photodetectors 3, 3, о о, 3, electrically connected with the corresponding elements 4,4 ,, .., 4 memories and together with them constitute the corresponding photosensitive elements, the first and second electrical terminals of all memory elements 4 are connected to the first and second, respectively. Inputs 5 and 6 of the device control, and each subsequent memory element 4 is optically connected to the previous one.

The photosensitive element contains a resistor 7 connected between the power supply tin 8 and the combined anodes of the first LED 9 and the first photo thyristor 10, optically interconnected, with the cathode of the first LED 9 connected to the anode of the second photo thyristor 3, which is an integrated photo-receiver 3 (Fig. ), and to the anode of the third photothyristor 11, whose cathodes are connected to the first control input 5 of the device, and the cathode of the first photoresistor 10 is connected to the anode of the second LED 12, the cathode of which is connected to the second control input 6 any device.

According to the method of recording images, an optical image is projected onto photosensitive elements 1, in (/

WITH

o- N:

but

h

The intensity of the optical signal from the photosensitive element 1 is fed to the light guide 2, where the optical signal falling on the photodetectors 3, thereby excites the memory elements A, and the number of excited memory elements 4 corresponds to the intensity of the optical signal from the photosensitive element ,.

A device that implements the proposed method works as follows.

A zero potential is supplied to the first control input 5, and a high level of positive potential to the second input 6. An image of the object is projected onto the photosensitive elements 1, each of which emits an optical signal with a certain optical signal intensity into the corresponding optical fiber 2. The optical signal from the output of the photosensitive element 1 passes through the optical fiber 2, fades out and by means of attaching to the photodetectors 3 sequentially excites elements 4 memories of

Where the intensity of the optical signal reaches a value at which the photodetector 3 does not trigger, the memory elements 4 are not excited. Thus, the number of excited memory elements 4 corresponds to the intensity of the optical signal.

To read the recorded image, alternate electrical signals of different polarity are fed to the inputs 5 and 6 of the device control. Due to the optical links between the memory elements 4, the recorded information is shifted towards the last memory element 4, from the optical output of which the o is read.

Photosensitive element (figure 2) works as follows.

In the case of the presence of a negative potential at the input 5 and a positive potential at the input 6, the LEDs 9 and 12 and the photo thyristors 3, 11 and 10 are not excited. With admission

optical signal to the second or third photothyristors 3 and 11, they become conductive, since a voltage drop is formed on their electrodes, and the first LED

9 emits light to the first photo thyristor 10, preparing it for its transition to the conducting state,

I

When changing the potential at the inputs 5 and 6 of the control, the first photo thyristor

10 becomes conductive, i.e. a current flows from the power supply bus 8 through the resistor 8, the first photo thyristor 10 and the second LED J2 to the input 6. The second LED 12 emits light to the third photo thyristor 11 of the next element. The second 3 and third 11 photo thyristors are transferred to the inversely biased state. Resistor 7 is required to set the operating current in the respective circuits.

The advantage of the proposed method is high speed, achieved by passing an optical signal through a fiber with a given attenuation coefficient, the signal propagating at the speed of light, high recording reliability due to the fact that the number of photodetectors can be increased and reduced accordingly. there is no need to synchronize the duration of the pulses and various kinds of transformations

Claims (1)

Invention Formula The method of recording images, which means that the optical image is projected onto photosensitive elements and the intensity of light in each optical channel is recorded, characterized in that, in order to increase speed and reliability of recording, the optical image is projected onto a matrix of optical fibers of the same length and the attenuation of the optical signal is recorded in each of the fibers in the form of a binary sequence.