SU1520474A1 - Device for recording information on final carrier - Google Patents

Abstract

The invention relates to a technique for outputting alphanumeric and graphic information from a computer and allows documenting information from video monitor screens and television displays of computers and personal computers. The device can be connected directly to the video signal and to the synchronization signals of the television display or video monitor and allows you to get hard copies on various end carriers. The device comprises a registration unit with a writing unit, a target recording medium and a drive of a terminal carrier. The recording control unit contains a video signal converter with a video signal input, a horizontal sync input, a frame sync input, a control input and outputs. The termination drive is a line scan. The image can be recorded as fragments with a different number of lines. A video signal converter circuit converts a television video signal with a horizontal scan to parallel recording signals of image columns. 3 il.

Description

The invention relates to a technique for outputting alphanumeric and graphical information from a computer, intended for documenting color and monochrome images from television display screens on a terminal medium and can be widely used in devices that register information from computers and personal computers.

The purpose of the invention is to expand the field of application by providing documentation of information from the screens of television displays.

FIG. 1 shows a block diagram of the device; in fig. 2 is a signal converter circuit; in fig. 3 shows the sequence of arrangement of the bands on the carrier.

The information recording device on the target medium contains a registration unit 1 with information inputs 2, a line of 3 writing elements connected to information inputs, terminal medium 4, drive 5 of the terminal medium, transfer recording section 6 to the terminal medium, recording and pinning unit 7 a recording control block 8 containing a signal converter 9 with information input 10, a control bus 11 and information output 12 connected to the node 3 of the writing elements of the registration block 1, and a control green 13 when by the water.

The control bus 11 contains an input of 14 horizontal sync pulses, an input of 15 adr sync pulses and an input of the 16th direction.

The signal converter has a synchronization output 17 connected via the synchronizer 13 of the drive with the 5th drive of the registration unit. The second input of the drive synchronizer is connected to the input 16 of the control of the signal converter. The information input 10 of the signal converter is the input of a television video signal.

The signal converter 9 (FIG. 2) contains the first 18, second 19, third 20, fourth 21, and fifth five 22 counters, the first 23 and BTOpoii 24 comparators, a controlled clock generator 25, the first element And 26, the second element And 27, a register 28, electrical signal amplifiers 29 and a write command driver 30,

In the converter, the counting input of the first counter 18 is connected to the input 15 of the frame sync pulses, and the output is connected to the counting input of the second counter 19 and the first input of the first comparator 23. The input 14 of the horizontal sync pulses is connected to the control input of the clock generator 25, the counting input of the third counter 20 and the setting the input of the fifth counter 22, the Output of the third counter 20 through the fourth counter 21 is connected to the first input of the second comparator 24, the second input of which is connected to the output of the second counter 19, and the output connected to the first the input of the first element AND 26. The output of the clock generator 25 through the second first element H 26 and the fifth counter 22 is connected to the second input of the first comparator 23, the output of which is connected to the input, registering clock 28, the second input of the second element AND 27 and the driver input 30 write commands. The information input 10 of the signal converter is connected via the second element H 27 to the information input of the register 28. At the same time, the outputs of the register through the electric signal amplifiers 29 are connected to the information outputs 12 of the signal converter. Managing bypass register 28 is connected to the output

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home shaper 30 write commands. The synchronization output 17 is connected to the output of the second counter 19. The setup inputs of the register 28, the first counter 18, the second counter 19, and the writing instruction generator 30 are connected to the control input 16. The installation inputs of the third counter 20 and the fourth counter 21 are connected to the input of 15 HR sync pulses.

The device works as follows.

The information input 10 of the signal converter is connected to the video signal output of the television display, the input 14 of horizontal sync pulses and the input, 15 frame sync pulses are connected to the corresponding outputs of the display. On the display screen, an image of the displayed information is formed using a progressive scan television raster. The number of display elements in the horizontal row of the image is N. The number of display elements in the vertical column is NJJ. For definiteness, we take. The regeneration of the image on the display screen with the frame scanning period T is carried out by the display processor and its buffer memory device for the full frame of the image, the character generator and the synchronization device. The display processor generates video signals and horizontal and frame synchronization signals that control the modulation and scanning of the CRT beam and are input to the proposed information recording device.

The cycle of recording information on the eye of an unauthorized carrier is as follows. A control pulse arrives at the control input 16 of the signal converter 9, which transfers the drive control unit 13 to the Record mode and sets to zero the counters 18.19, the register 28 and the write pulse driver 30.

The first counter 18 performs a counting of frame sync pulses at a frequency F, j Modulo N, paBHOMj to the number of display elements in a row of images on the display screen, and generates a column code for the record. Frequency pulses are fed to the counting input of the second counter 19, which performs the count modulo And (, 2 ...), where P -

the number of horizontal bars of the frame recorded on the destination media. The parallel code of the number of the strip from the output of the counter 19 is fed to the second input of the second comparator 24, and the pulses with the frequency l / Np-II arrive at the output 17 of the synchronization.

The third counter 20 in each frame performs the counting line sync pulses with a frequency Fj ,. modulo Ng / II From the output of counter 20, pulses with a frequency (FJ. P) / Ng arrive at the counting input of the fourth counter 21, which

performs the modulo P. Parallel-) 5 counter output 19 and starts

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one vertical column of the recorded image strip. The write pulse generator counts the clock pulses and controls the transmission of the output signals of the register 28 to the electrical signal amplifiers 29, from whose outputs the recording information signals are sent to Q node 3 of the recording elements of the recording unit 1.

When the column number exceeds the number of display elements in the Np row, the band number code changes to

The code from the output of the counter 21 is fed to the first input of the comparator 24. When the codes of counters 19 and 21 are equal, the output of the comparator 24 generates a signal of logical 1, which arrives at the first input of the And 26 element. For example, at. 512, when recording the first image band, the output of the comparator will be signal 1 for image lines 1 to 128, when recording the second band, for image lines 129 to 256, etc. (Fig. 3).

The controlled clock generator 25 in each horizontal scanning period generates at its output a sequence of clock pulses, the number of which is equal to the number of Np display elements in the image line. The first clock pulse of the sequence is related in time to the position of the first display element in the image row. At signal 1 at the output of the comparator 24, the clock pulses through the AND element 26 are fed to the counting input of the counter 22, which is set to zero position with each horizontal sync pulse and counts the clock pulses in each row. The code of the clock pulse number from the output of the counter 22 is fed to the input of the comparator 23, to another input which goes parallel to the column number of the record from the output of the counter 18. When the codes are equal, the comparator 23 generates a signal 1 at the output, which goes to the input of the H 27 element and to register clock 28. At the same time, the video signal impulse through element And 27 comes from the video signal input 10 to the information input of the series-parallel register 28. At the outputs of the register 28 after one frame, signal 0 is generated

next line image. The transducer 9 signals can be performed on known digital integrated circuits. Elements 25,26, 22,23 and 27 should be of increased speed. It is advisable to perform them on a TTL or TTLSH microcircuit. The remaining elements of the converter can be performed on the chips

5 series CMOS, TTL, etc.

Node 13 (FIG. 1) generates drive control signals for the target carrier. The beginning of the movement of the terminal carrier corresponds to the Start signal.

0 at the input 16 control. The carrier stops on the output pulse of the counter 19 after the last strip of the image is recorded. Drive control unit 13 can be performed on standard logic elements and triggers. The drive performs line-scanning of the target carrier (the sequence of arrangement of the bands on the carrier is shown in Fig. 3).

In the proposed device can be applied terminal light carrier. In this case, the node 3 writing elements can be

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made, for example, in the form of well-known line modulators of light with a light-modulating medium (for example, an elastomer layer, PSTL ceramics, or liquid crystals). A means of transferring recordings to a terminal photosensitive medium can be an optical system with cylindrical lenses using schlieren-optics or polarizers.

The proposed device can be used as the terminal carrier 4 thermochemical paper. The node 3 writing elements in this case is made in the form of thermal

heads consisting of thermoelements heated by electrical signals supplied to information inputs 2. Thermocouples are in thermal contact with the carrier made by heat-conducting elements (for example, tips of thermoelements). Under the effect of heating with thermocouples, the color of the paper changes and the image column is recorded. t

Electrochemical paper may serve as the terminal carrier. In this case, information signals with a voltage of 150–200 V from inputs 2 are supplied to a line of 3 writing elements with electrical conductors arranged in a row and having electrical contact with electrochemical paper. In place of electrical breakdown, a chemical reaction takes place, resulting in a change in the color of the carrier.

Electrophotographic paper having a photosensitive layer of zinc oxide can be used as a terminal carrier. The recording is carried out by a known method. A uniform electric charge is applied to the electrophotographic paper by an electric discharge. Then, an optical column with a light modulator, having parallel strip electrodes, is projected onto a photosensitive layer, which creates a latent image in the form of a potential relief. The latent image is developed by spraying a dye powder. The recording is fixed by a heater with a mechanical npjraHMoM.

The target recording medium in the proposed device can be plain paper. In this case, the line 3 of writing elements can be in the form of electrically controlled nozzles arranged in a row. The nozzles spray the ink and make an inkjet recording of a column on paper.

Thus, the proposed device for recording information on the target medium allows to obtain hard copies from the screens of television displays of video monitors. The recording time of an image frame with a resolution of 512x512 display elements is about 10 seconds. Device enabled

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It is not necessary to record an image frame as a sequence of horizontal stripes, each of which contains several full lines of text. This reduces the number of writing elements, and the frame recording time is increased.

The proposed device for recording information on terminal media, in contrast to the known one, is connected directly to the video signal and synchronization signals of a television display or video monitor, and not to a common bus or computer channel via an interface. This allows the use of a buffer memory device, character generator and a display processor synchronization system, making it possible in the proposed device to transform the display output signals and store one image column. As a result, the cost of the recording device is reduced and its scope is expanded due to the possibility of connecting to any display with a television raster. This allows the device to be used for output to the target storage medium from computers and personal computers and in those cases when access to the computer memory and the exchange process with additional peripheral devices is not provided.

The proposed device can be used in facsimile equipment in conjunction with the video monitors used.

Claims (1)

Invention Formula An information recording device on the target medium containing an image source, a writing unit 5, connected through a recording transfer unit to the target medium with a terminal medium connected to the output of the drive of the terminal medium, developing unit, and fixing the recording and recording control unit, including a drive control element, characterized in that, in order to expand the scope of application by providing documentation of information from the screens of television displays, the recording control unit additionally contains um clock generator gsomparatory, counters, an AND circuit, an amplifier and shaper register 0 five 0 0 five 915 a command signal, the information output of the image source is connected to the first input of the first circuit AND the output connected to the first input of the register connected via an amplifier to the inputs of the writing element node, while the output of the horizontal sync pulses of the image source is connected directly to the first inputs of the first and second counters and through the clock generator with the first input of the second circuit And, the output connected to the second input of the second counter, the output of which is connected to the first input of the first comparator, the output connected to the second inputs of the first AND circuit and the register and the first input of the command signal generator, the output connected to the third input of the register, the output of the frame sync pulses of the image source ten 0 five 0 connected to the second input of the first counter and to the first inputs of the third and fourth counters, the output of the latter is connected to the second input of the first comparator and to the first input of the fifth counter, the output of which is connected to the first inputs of the second comparator and the drive control element, and the output of the first counter is connected with the second input of the third counter, the output of which is connected to the second input of the first comparator connected to the second input of the second AND circuit, while the control output of the image source is connected to to the main register input and to the second inputs of the fourth and fifth counters, the driver of the command signal and the control element of the drive, the output of which is connected to the input of the drive of the terminal carrier. 1