SU506031A1 - Device for displaying information - Google Patents

Description

(54) DEVICE FOR DISPLAYING INFORMATION

one

The invention relates to automation and computer technology and can be used in the construction of display devices for information on the screens of television receivers.

A device for displaying information is known comprising a series memory block, a symbol generator, a beam control unit and a cathode ray tube, as well as a clock generator connected directly and through a line counter to a frame memory block and a line memory block and connected to a generator characters and a beam control unit.

The proposed device differs from the known one in that sequentially connected comparison block, digital-analog converter and shared block are inputted to it, the frame memory block being connected to the comparison block associated with a row counter, a digital-analog converter connected to a clock generator and a beam control unit and a match block associated with the line memory block.

This allows information to be displayed as a group of symbols arbitrarily located on the indicator screen and expanding the scope of application of the device.

Pa drawing shows a block diagram of a device for displaying information.

The device comprises a frame memory block 1, a match block 2, a digital-to-analog converter 3, a row memory block 4, a comparison block 5, a row counter 6, a symbol generator 7, a clock generator 8, a beam control block 9, and a cathode ray tube 10.

The device works as follows.

The information to be displayed goes to block 1. The coordinate part of the message from block 1 goes to the inputs of block 5 and to the inputs of converter 3. When the code of the current line, determined by the counter 6, matches the code received from block 1, the comparison block 5 forms the resolution resolution. This signal is fed to the input of converter 3, which also generates a signal that determines the position of the displayed information on the line of the television raster. This signal enters the other inputs of block 2 and permits the passage of the quits of the displayed information to block 4, where it is stored for several times to form the spatial representation of the character of the lines of the television raster. The character codes received in block 4 are alternately transmitted to generator 7, the output of which generates a serial code of displayed characters arriving at block 9, where corresponding video signals are generated synchronously with the television scan and transmitted to handset 10. The output signal from the digital-analog converter also goes to block 9 to display a coordinate mark defining the true position of the object of observation with respect to a given background, characterized by the accompanying group of symbols. All necessary for the operation of the device pulse sequences are generated by the generator 8.

Subject invention

A device for displaying information comprising series-connected line memory block, symbol generator, block

control beam and cathode tube, as well as a sync pulse generator, connected directly and via a row counter to a frame storage unit and a row memory block and connected to a symbol generator and a beam control unit, characterized in that, in order to expand the field of application of the device, A series-connected comparison block, a digital-to-analog converter and a matching block are entered into it, the frame memory block being connected to the comparison block associated with a row counter, a digital-analog converter A drive connected to the clock generator and a beam control unit, and a match unit associated with the row memory unit.