SU746620A1 - Symbol displaying device - Google Patents

Description

(54) DEVICE FOR DISPLAYING SYMBOLS

I

This invention relates to a calculator. This technique can be used in devices for displaying character information on television screens.

A device for displaying symbols is known, comprising a control unit connected to a main memory unit, a memory unit, connected via a code converter to a video signal amplifier.

A disadvantage of the known device is its narrow scope.

The closest in technical essence to the present invention is a device comprising a control unit connected to a symbol memory unit and an operational memory unit connected to a sync signal generation unit and a symbol memory unit, the output of which is connected to the input of a code converter connected to video signal amplifier connected to the unit (clock signaling, cn-1

the corresponding inputs of the device and its output 2}.

The disadvantage of this device is that it has a range of applications, wrap-in. This is because the device does not have the ability to form characters with different widths and angle of inclination.

The purpose of this 1 acquisition is to expand the field of application of the device by providing the formation of characters with different widths and angles of inclination.

The goal is achieved by the fact that the device contains memory blocks of width and angle of inclination of characters, decryptors, block of frequency dividers, pulse shaper and shift register, information inputs of which are connected to the outputs of memory blocks of width and angle of inclination of symbols, and its control 20 These inputs are connected to the inputs of the code converter and connected to the output of the pulse shaper and the first one, the output of the frequency divider unit, the second

the output of which is connected to the first inputs of the symbol memory and memory blocks of the width and slope of the characters, the inputs of the pulse former are connected to the output of the shift register connected to one of the RAM inputs, and the first output of the frequency divider, whose inputs connected to the outputs of the sync signaling unit and the decoder, the inputs of which are connected to the outputs of the main memory unit, the other outputs of which are connected to the second inputs of the memory blocks of the width and angle of the characters; the inputs of which are connected to the outputs of the control unit. ,

The drawing shows a structural electrical circuit device.

The device contains a control unit 1, a symbol memory unit 2, a symbol width unit 3, a character tilt angle unit 4, 5 (left or right), a memory unit 6, a decoder 7, a frequency divider unit 8, a converter 9 codes, shift register 10, shaper 11 pulses, video signal amplifier 12, clock generation unit 13. Positions 14, 15 designate the control inputs of the device, position 16 its output.

The device works as follows.

From the control unit 1 to the memory unit 6 in the period prior to the beginning of the formation of the symbolic images, information about the order of characters in the recording, the location of the image on the television screen, the image scale and the angle of the characters are recorded by coded signals. Simultaneously from block 1 of control, block 2 of character storage and block 3 of character width records information about the set of characters required for a given record and their width, and blocks 4, 5 of memory about the angles of characters. Blocks 2, 3 character memories and character widths are sets of shift registers combined into matrices, the number of which is determined by the number of characters in this record. The size of the registers and their number in the matrix of the symbol is determined by the largest format character possible on the OLE programming. The width of the registers in block 3 of the memory of the width of characters is one more than

In block 2 of memory characters. The memory blocks 4, 5 of the left and right symbol slopes are also sets of shift registers combined into matrices. The number of matrices in each of the 4, 5 blocks of memory and the number of possible slopes of characters in the record. The width of the registers and their number in each matrix is equal to the size and number of registers of the matrix of block 3 of the memory of characters width. The RAM block 6 is a set of shift registers whose width is equal to the maximum number of characters in the image page line, and their number is determined by the amount of information intended for display. From the decoders of the RAM block 6, the decoded signals go to the blocks 2-5 of the symbol memories, the widths of the symbols, the left slope, the right slope, and perform non-destructive reading of the information necessary for display. From the block 2 of the symbol memory, the parallel code symbol converter 9 to the serial image code is entered into the code for displaying the elements of the symbol of a particular decomposition line. From block 3 of the memory width of characters in the shift register 10 is entered code. width of the same symbol. The codes in converter 9 and register 10 are written simultaneously and correspond to the displayed character decomposition string. The signal about the end of the display of the width of this symbol comes from the register 10 to the RAM block 6 and the pulse shaper 11, after which the RAM block 6 generates a signal about the subsequent symbol in the decomposition line, and the pulse generated in the shaper 11 goes to the converter 9 and register 1O and allows the recording of information about this symbol.

Claims (1)

Thus, it is possible to obtain symbols of different widths on the screen, following each other in a word with the same interval. When it is necessary to receive a bridge of oblique symbols or groups of symbols in the image, the corresponding signal from the operational memory block 6 goes to the 4 or 5 memory blocks. In this case, the tilt information is recorded in the shift register 10, which is carried out in the time period preceding the display of oblique symbols. In this case, a shift of register 1O occurs for each of the lines of decomposition of oblique characters by the amount determined by the selected angle of inclination. If in this line of the page being imaged after the image of oblique characters it is necessary to obtain non-oblique characters, the signal from the other angle storage unit is received in the shift register 10 tilt, compensating for the previous shift of the register 10, then from. The symbols to be aligned are aligned. From the memory block 6, the scale codes go to the decoder 7, from which output the decoded signal of the required scale to the frequency dividers block 8, dividing the frequency of the sync pulses of the image points and the sync pulses of the decomposition, which come from the block 13 sync signaling. The signals from the output of the decoder 7 set the division factor of the dividers in accordance with the selected discrete scale. From the output of the 8 frequency divider unit, the sync pulses of the image points are fed to the inputs of the imaging unit 11 pulses, the transducer 9 codes and shift register 10, and the sync pulses of the decomposition strings are fed to blocks 2, 4, 5 of the symbol memory, width of characters, left and right tilt angles , causing reading out of these strings of information about data decomposition strings. From block 13 of the formation. sync signals are sync signals that determine the beginning of the image on the screen and the line numbers in order. In order to synchronize the operation of the device for forming television symbolic images of the device input 14, television sync signals are supplied, the sync signal generation unit 13 and the video signal amplifier 12, to which blanking signals are received from input 15, a. with the transducer 9 koDrv - a sequence of pulses that determine the sign video information. Blank signals prohibit the appearance at the output 16 of a device of signed video signals. Providing a variable size width of characters, the formation of oblique characters, italicizing individual characters in the record and discrete scaling expand the scope of the device. A device for displaying symbols comprising a control unit connected to a symbol storage unit and a random access memory unit connected to a sync signaling unit and a unit of character sets, the output of which is connected to the input of a converter of video codes connected to a video signal amplifier, connected to a sync signal generating unit, controlling the input of the device and its output, characterized in that, in order to expand the field of application of the device by ensuring the formation of symbols with different width and angle of inclination; memory blocks of width and angle of inclination of symbols, decoder, block of frequency dividers, pulse shaper and shift register, whose information bits are connected to the outputs of memory width and angle of slots of symbols, and its control The inputs are connected to code conversion inputs and connected to. At the pulse shaping input and the first output of the frequency dividers, the second output of which is connected to the first inputs of the symbol memory, and the width and angle slots of the memory, the inputs of the CUB pulse former are connected to the output of the shift register connected to one of the operational memory blocks and the first output of the frequency dividers, the inputs of which are connected to the outputs of the synchro formation unit and the descriptor, the rator, the inputs of which are connected to the outputs of the RAM,. the other outputs of which are connected to the second inputs of the memory blocks of width and angle of the slope of the characters, the third inputs of koTers are connected to the outputs of the control unit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 468275, cl. G About K 15 / 2O, 1976. 2, US Patent life 3928845, cl. 346-172.5, 1975- (prototype).