SU538357A1 - Device for converting information - Google Patents

Description

The invention relates to the field of automation and computer technology and can be used when reading information in information systems.

A device for converting information 1 is known.

The structure of this device does not allow drawing and drawing information to be read while simultaneously transmitting it to the display device.

The prototype of the proposed invention is a device for converting information 2, comprising a comparison unit connected to a shift register, a first counter associated with a beam coordinate deflection unit, a second counter, a third counter, AND element and a shift register, an analysis block connected to a trigger analysis and the second counter, the element "OR, associated with the second counter connected to the shift register, and the third counter through a serially connected element And the delay element is connected to the register driving.

Such a device does not allow to transmit the readable image to a low resolution display device due to the impossibility of matching the scanning speed of the reading unit and the information conversion speed, which

leads to a lot of information transfer time.

The proposed device is characterized in that it contains matching blocks and a trigger.

controls, with the coincidence blocks connected to the shift register, the analysis trigger, the comparison block, and the compensation trigger, with the third counter and the comparison block. This allowed the transfer of readable drawing and graphic information to a low-resolution display device and thereby expanding the field of application of the device. FIG. 1 shows a block diagram of the device;

in fig. 2 illustrates the principle of reading information by an electron beam during operation of the device.

The device contains a beam deflection block 1, first 2 and second 3 counters, element OR 4, analysis block 5, analysis trigger 6, shift register 7, comparison block 8, coincidence blocks 9 and 10, trigger registers 11 -13 shift register, channel bus connection 14, control trigger 15, third counter

16, the element And 17 and the delay element 18. The device operates as follows. The scanning beam, when scanning, breaks the frame line A into groups (1a, 2a, etc.) of the n decomposition element, each

which corresponds to a certain bit of the shift register 7 and the decomposition element (16, 26, etc.) on line B of the adopted CRT (not shown in Fig. 2). The number of bits of the shift register 7 can be consistently placed on it information from zones 1Л, 2А, etc., containing the groups la, 2a 4a, Za, etc. FIG. 1 shows la, 2a, etc. of the four decomposition elements, zones lA, 2A ..., containing 4 groups of four and four-bit shift register 7. After reading the information from the zone and converting it, it is first placed on shift register 7, and then transmitted successively to the receiving side, the " the color of the corresponding decomposition elements. The conversion of the information read from zones 1A, 2A, etc., with the aim of placing it on the shift register 7 is carried out depending on the location of the gaps between the image lines relative to the location of the groups. With this, the following options are possible. The entire gap, or a large part of it, is located in one of the groups of the zone. In this case, the shift register 7, corresponding to this group, is written "O, and the lines with the specified interval correspond to" 1 in the adjacent bits. Half of the gap or a smaller part of it is in one of the groups of the zone. In this case, "1 is written to the specified shift register number 7, and" O. If the thickness of the read lines turns out to be large, this is recorded as twice the number of units written. The recording beam begins its movement after passing the reading beam of the first zone. To implement the principle of operation of the device, according to FIG. 2, the clock pulses arrive at the beam deflection block I and the counting inputs of counters 3 and 2. The thickness of the read line is determined by the number of clock pulses counted in counter 3 between the short PF and HF pulses formed on the leading and trailing edges of the video signal. Pulses PF and ZF through the element OR 4 reset the counter 3 to the state "O. In addition, at the moment of its reset by the pulse ZF, the analysis unit 5 analyzes the number recorded in counter 3. If the recorded number corresponded to a thick image line, then the pulse from analysis unit 5 triggers analysis 6 to the status "1. Analysis trigger 6 is triggered by a PF pulse. The initial code of counter 2 corresponds to the number of decomposition elements in a group. This code is restored each time by the signal of reaching the zero state of counter 2. This signal also enters the shift register 7, as a result of which the information in each shift cycle arrives on the bus 14 of the communication channel. Comparison unit 8, designed to analyze the location of the gap between the image lines relative to the location of the groups, analyzes the code in counter 2 using the RF pulse. If the code in counter 2 corresponds to the location in the group of a smaller part or half of the gap, then an impulse appears at the output of the comparison block 8, and if the larger one, then at the output ". From the outputs of the comparison unit, the pulses arrive at the coincidence blocks 9 and 10 and to the single inputs of the trigger 11 and 12 of the shift register 7. In case the reading line is thin, the signal is set to the state "1 trigger II, and by the signal trigger 12. If if the read line turns out to be thick, then according to the resolving potential of the analysis trigger 6 to the state "1 through the coincidence blocks 9 or 10, the triggers 11, 12 or 12, 13 are set, respectively. The order of writing to the shift register 7 is the second of the two adjacent lines . If the first line was recorded by the signal ", then the information of the second line is recorded similarly. If the information about the thickness of the first line was recorded by a signal, then the second line can be recorded in shift register 7 without the first one. To prevent this, simultaneously with recording the first line, the signal "is set to state" 1 control trigger 15. The potentials from its outputs prohibit the operation of the comparator unit 8 and allow the passage of shift pulses (signals of installation in "About counter 2) to the counting input of counter 16 Since the first line is written to the bit with trigger 11 of shift register 7, the second line is only allowed to write after shifting the recorded information to trigger 13 of shift register 7, i.e., after the arrival of two shift pulses. A counter 16 with a conversion factor of three, after the first shift pulse arrives at its counting input, gives permission to pass other shift impulses through element 17. As a result, the video sequence appears at another resolution input of element 17 and the second shift pulse first shifts the recorded information about the thickness of the first line in the trigger 13 of the shift register, and then puts through the element And 17 and the delay element 18 "1 in the trigger 11 of the shift register. If the second line turns out to be thick, then the next shift pulse, by moving the recorded 1 second line to the shift register trigger 12, writes 1 to the trigger 11. When the counter 16 is recalculated, its overflow sign is set to “O control trigger 15”. which removes the prohibition signal from the comparison block 8.

If, when reading the second line, lying close to the first one, was not found, then a false entry in shift register 7 is blocked by a low level of the video signal at the input of the And 17 element.

To prohibit the transmission of information lines from the output of the shift register 7, read in the longitudinal direction, and to save the conversion results when reading them in the transverse direction from the output of the counter 3, erases the initial record in the triggers 11 and 12 of the shift register and prohibits the formation of comparison signals by the comparison unit 8 on signal ZF. The inhibitory potential of counter 3 is removed by a signal formed on the falling edge of the video signal.

Claims (2)

1. "Structural recognition methods and automatic reading ed. prof. A.I. Mikhailov, M., 1970, p. 268. 2. Petrenko A. I. “Automatic input of graphs into electronic computers. Energy, M., 1968, p. 258 (prototype). m - aJ-5a-f 4e-H GGT LJ g / 4 i./e. eleven ttt i About 1 i  - “i“ g;