SU475748A1 - Device for reproducing information - Google Patents

Description

one

The invention relates to information display means and can be used as a device for displaying a collective use.

Information reproduction devices are known that contain successively connected video signal sensor, a buffer memory device and an adder, the output of which is connected to a control input of a projection television device equipped with scanners and a screen, and a video signal sensor, a buffer memory and scanners are connected to a synchronization unit.

However, when using the device as a device for displaying a shared display, the screen is overwhelmed with redundant information.

The purpose of the invention is the separation of reproducible information.

For this, the synchronization unit is connected via sensors of the dynamic image, polling units and intermediate drives to the second input of the adder, and the output of the synchronization unit is connected to the electron-optical sensor via the clock generator and the clock switch.

light shutters located in front of the screen.

The drawing shows a functional diagram of the device for reproducing information.

The device contains a sensor 1 video 1gala, the output of which is connected to a buffer storage device 2 that allows for multiple retrieval of information, and the input - to the block 3 synchronization. The outputs of the block 3 are connected to the sensors 4 and 5 of the dynamic image, as well as to the buffer memory 2, the scanner unit 6 and the driver 7 clock pulses.

The number of outputs of the imaging unit 7 is equal to the number of types of information displayed, and each of the outputs is connected to a corresponding intermediate storage unit of the unit 8 and an electron-optical light gate 9.

Electronically light gates 9 are provided with switches of 10 clock pulses, allowing one or another clock pulse or several pulses to be selected at once.

The outputs of the sensors 4 and 5 of the dynamic image are connected through the interrogation unit 11 with the block 8 intermediate storage units, the former 7 and the adder 12. K. Adder 12

the output of the buffer memory 2 is also connected.

The output of the adder 12 is connected to the control input of the projection television device.

The projection part of the device consists of a laser 13 in series, a modulator 14, a deflecting system 15 connected to the sweep unit 6, and a screen 16. Operators are located behind the screen 16, and the gates 9 are located between them and the screen.

The device works as follows.

It is assumed that all operators use the same reference information (e.g., a map), and the remaining types of information are transmitted in frames that differ from each other in individual fragments. The reference information from the sensor 1 of the video signal enters the buffer memory 2, from where it is outputted through the unit 12 to the modulator 14. With the increased frequency, since the blocks 12 and 6 operate synchronously, the formation of the reference image on the screen 16 is also performed with an increased frequency.

Dynamically changing information is entered in accordance with the coordinate signs from the communication channels into the cells of block 8. This information is called based on the coincidence of coordinate descriptions with the current coordinate values of the sweep beam X, Y from blocks 4 and 5 when the clock pulses from the generator 7 From the cells of block 8, the information flows through block 12 to

modulator 14, which is tied to the coordinates of the reference information. By selecting the appropriate clock pulse with switch 10, it is possible to open the gate 9 for a fraction of the cycle and observe information relating to only one of the cells of block 8. You can also select two or more clock pulses and observe information from several cells. The frequency of the shutter 9 is selected the same as the frequency of information on the screen.

Subject invention

A device for reproducing information comprising a serially connected video signal sensor, a buffer memory device and an adder, an output connected to a control input of a projection television device equipped with a screen, the video signal sensor and a buffer memory device being connected to a synchronization unit that is also connected to a projection scanner Devices, characterized in that, in order to separate the reproduced information, the synchronization unit is connected via sensors ynamic image block polling and the intermediate storage to the second input

adder, and the output of the synchronization unit through the shaper clock pulses connected to the electron-optical light valves located in front of the screen.