SU797654A1 - Device for registering eye movements - Google Patents

Description

(54) DEVICE FOR REGISTRATION OF EYE MOVEMENTS

frame and line pulses on the one hand and the registration unit on the other, the determinant of the horizontal coordinates of the corneal flare is included in the circuit between the generator of the global maximum of the signal in a television frame, the selector of horizontal pulses and the generator of high-frequency pulses on the one hand and the registration unit on the other

In addition, the registration unit is configured to record the results in machine code on a magnetic tape.

The drawing shows a block diagram of a device for detecting eye movement.

The device contains a source of light 1, an optical system 2, a television transmitting camera 3, a selector 4 of the global maximum of the signal in a television frame, a selector of 5 frame pulses, a selector of 6 horizontal pulses, a generator of 7 high-frequency pulses, a determinant 8 of the vertical coordinate of the corneal flap1, a determinant of 9 horizontal coordinates corneal flare and block 10 registration. The selector 4 of the global maximum of the signal in a television frame is made on a storage capacitor, which is charged through a diode and the primary winding of the current transformer. The secondary winding of the transformer is connected to an amplifier, the output of which is a differentiating chain, which determines the moment of termination of the storage of the storage air conditioner. Highlighter 5 frame pulses performed. on the amplitude selector, delay link with a delay time of 3/4 from the horizontal scanning period and coincidence circuits. The selector of 6 horizontal pulses is made in the form of an amplitude selector with a differentiating chain. The selector 4 of the global maximum of the signal, the selector of 5 frame pulses and the selector of horizontal line pulses are connected to the output of the television front of the camera 3.

The generator 7 high-frequency pulses are made on a field-effect transistor with a pulse shaper of logical links. The determinant 8 of the vertical coordinates of the corneal flare is made in the form of a binary counter of pulse pulses with intermediate1 1 register. Key 8. between the selector 4 of the global maximum signal, the selector

5 frame pulses and a selector

6-line impulses on one side and a registration unit 10 with the other. The determinant 9 of the horizontal coordinate of the corneal flare is made

in the form of a binary counter of high-frequency pulses with an intermediate register. The determinant 9 of the horizontal coordinate of the corneal block is connected to the circuit between the global maximum signal selector 4 and the television frame, the horizontal small pulse selector 6 and the high-frequency pulse generator 7 on one side and the recording unit 10 on the other / The recording unit 10 contains a signal conversion unit from parallel. code in the serial, the input unit of passports marking each series of signals, the switch and the node recording the results of registration and passports in machine code on the magnetic tape.

The device works as follows.

From the source of light 1, through the optical. The chesing system 2 causes the eye of the observer 11 to be lit to create a corneal flare. The image of the corneal flare moving as the eye moves 11 is projected by the optical system 1рy 2 onto the screen of the cathode-ray tube of the television transmitting camera 3. The psi television signal carrying information on the position of the corneal glare comes from the camera 3 to the selector 4 of the global maximum of the signal in the television frame, the selector 5 frames pulses and a selector of 6 row pulses, at the time of the global maximum of a signal in a television frame, the differentiating chain of the selector 4 sends a pulse of maximum b Nala in determinants 8 and 9 are vertical and horizontal coordinates. dinat corneal flare. The horizontal pulse counter for the corneal flare vertical identifier 8 after the arrival of a personnel pulse from the human frame extractor 5 is set to the O position and the horizontal pulse count starts. At the moment of arrival of the maximum pulse from the selector 4 of the global maximum of the signal in a television frame, the state of the horizontal pulse counter is written to the intermediate register.

The counter of high-frequency impulses of the determinant 9 of the horizontal coordinate of the corneal flare after entering the horizontal impulse from the selector 6 of the horizontal impulses is set to O and the counting of high-frequency impulses begins. At the moment of arrival of the maximum signal pulse from the global maximum signal selector 4 in a television frame, the state of the high-frequency pulse counter is written to the intermediate register. The signal carrying information about the coordinates of the corneal flare in a television frame, from the intermediate registers of the determinants 8 and 9, enters the block 10 of the re

Claims (2)

Claim 1. A device for recording eye movements, containing a light source, an optical system, a television transmitting camera and a recording unit, characterized in that, in order to simplify it when determining the operator's viewing directions in space and the distribution of eye jump lengths, their directions, eye stops and them continue. In addition, it includes a global signal maximum selector in a television frame, horizontal and frame pulse extractors, a high-frequency pulse generator and vertical and horizontal coordinates of the corneal flare, made in the form of horizontal and high-frequency pulse counters with intermediate registers, while the global maximum of the signal in television frame, frame and line pulses are connected to the output of the television transmitting camera, the determinant of the vertical coordinate po ovic flare is connected in the circuit between the global signal maximum selector in the television frame, the frame and line pulse dividers on the one hand and the recording unit on the other, the horizontal corneal flare coordinate determiner is included in the circuit between the global maximum signal selector in the television frame, the separator horizontal pulses and a high-frequency pulse generator on the one hand and a recording unit on the other. 2. The device pop. 1, cast in that the registration unit is configured to record the results in machine code on magnetic tape.