SU1357906A1 - Device for correcting reproduced pictures - Google Patents

Abstract

The invention relates to the printing industry and can be used in the production of corrected printing plates for the reproduction of both color and black and white images. The purpose of the invention is the expansion of technological capabilities. The device contains an optical-electronic unit 1, a counter 2; coordinates, multiplexer 3, operative05 01 “m so srig. one

Description

but a memory device 4, a shift register unit 5, an image synthesis unit 6, a comparison circuit 7, a multiplexer 8, a coordinate input device 9 and a random access memory 0. The introduction of new elements and the formation of new connections between the elements of the device allows one to achieve the goal due to the fact that the corrected part is combined, with the reference grid, the coordinates of the elementary figures are determined, the optical-electronic 1 unit 1 analyzes the original areas with parameter 1

The invention relates to the printing industry and can be used in the production of corrected printing plates for the reproduction of both color and black and white images.

The aim of the invention is the expansion of technological capabilities due to the implementation of color correction selectively along the image plane.

FIG. 1 shows a device for correcting reproduced images; in FIG. 2, the reference grid.

The proposed device contains a plastic-electronic unit 1., The clock outputs of which are connected to the counter. 2 coordinates, and the information output is connected to the first input of the multiplexer 3 and to the data input of the random access memory (RAM) 4 data.

: The data output 031 4 is connected to the input of the shift register unit 5, the last output of which is connected to the input of the image synthesis block b, and the intermediate outputs are connected to the inputs of the comparison circuit 7. The output of the comparison circuit 7 is connected to the start input of the coordinate counter 2, the output of which is connected to the first input of the second multiplexer 8. The first output of the coordinate input device 9, the second output of which is connected, is connected to the input E of the multiplexer 8.

frames in accordance with the coordinates of elementary figures and the resulting primary color signals are inserted into block 5 of the shift registers. In the case of black-and-white originals, the opto-electronic unit generates one luminance signal. During the reproduction process, the coordinates of the scanned point are compared with the coordinates of the elementary figures and, if they coincide, the current values of the primary color signals are replaced with the corresponding signals recorded in block 5 of the shift registers, 2 Il.

0

five

thirty

AP

2

with the control input of the second multiplexer 8, the output of the last connection to the address inputs of the data RAM 4 and coordinates 0, the recording resolution inputs which are connected to the third output of the coordinate input device 9 and the data input of the RAM 10,

Dagger input: RAM IO coordinates are connected to the control input of multiplexer 3, Tactics and Optics of the opto-electronic unit i and block 5 of the shift registers are combined.

The device works as follows.

The original or its pre-specified number of times the image is aligned with the reference grid, which. represents, npm-iep, a set of cells, lumped. h) for transparent material. The smaller the cell dimensions of the reference coordinate grid, the more accurately you can set the dimensions of the corrected area. The grid cells are proned as designed both vertically and horizontally.

The combination is done in a simple manner, for example, the upper left corner of the original is laid under the cell A. At the same time, the boundaries of the footer;) and the hcnalg should be clear, if necessary, they can be executed in the form of a frame. Coordination is determined; elementary figures (cells); coinciding in area with the corrected - a section of the original (for example, VA, .35, C.5, etc.). Using the device for 9 input coordinates, taking into account the scale, alternately dial the coordinates of all cells that make up the corrected part of the original, while setting the multiplexer 8 to the position where the first output of the coordinate input device 9 is connected to the input address of the data RAM 4 (for reducing the time of setting information from the device 9 input coordinates in it may be possible to set the extreme coordinates of the lines covering the area with the same desired color).

In the process of analyzing the point with the desired color, it finds on the original or in the color atlas a point with the desired parameters. In this case, the opto-electronic unit 1 generates the primary color signals K, 3, C, which are entered into the data RAM 4, press the record button on the remote control of the coordinate input device 9 and record this in RAM 4 at the address corresponding to the coordinates of the corrected point. At the same time, logical unit is recorded in the RAM 10 at the same address. When the data is entered into the RAM 4 and 10, the read button on the remote control of the coordinate input device 9 is pressed and the multiplexer 8 is moved to the upper position.

In the process of reproduction, the optoelectronic unit 1 outputs to the clock inputs of the counter 2 coordinates signals about the line number and the number of the image element within this line when the original is unrolled. In addition, the optico-electronic unit 1 provides, via multiplexer 3, to the input of unit 5 of the SHIFT register, triad signals of primary colors for each picture element (in digital form). In block 5 of shift registers information about the color of a series of picture elements is accumulated. Reproduction begins outside the original. If the series of points analyzed by the opto-electronic unit 1 does not capture the original, all the image elements are the same, then the triads of color signals are identical, which is fixed by the comparison circuit 7, the inputs of which receive data from the intermediate outputs of the shift register unit 5. If the original is captured during the analysis, the signals at the intermediate outputs of block 5 of the registers become e) important and the comparison circuit 7 gives

to the input of the counter of 2 coordinates, a starting pulse, beginning with which the counter of 2 coordinates counts lines and image elements and recounts them into coordinates of the analyzed point. These coordinates from the output of the counter 2 coordinates through the multiplexer 8 are fed to the address inputs of RAM 4 and 10. If there are coordinates that previously entered data into these RAMs at the output of the RAM 10 coordinates, a logical unit appears that takes multiplexer 3 to the bottom position scheme. At the output of the RAM 4 data, data (previously recorded at this address) appears, which through multiplexer 3 enters the block 5 of the shift registers, i.e. on the elements of a given area, the current primary color signals corresponding to unwanted colors are replaced with color signals corresponding to the desired colors. From the output of block 5 of the shift registers, the primary color signals arrive at the input of block 6 for image synthesis, the output of which is the recording signal of the color separation photoform.

The cell dimensions of the reference grid can be increased if multiplexer 3 switches to the desired color if the opto-electronic unit is in the given coordinates and the specified unwanted color signals are received.

The latter is realized if a logical one is entered in the additional RAM (not shown) at the addresses corresponding to unwanted colors (similarly as in RAM 10). The output signals of the RAM 10 and the additional RAM are connected to the control input of multiplexer 3 via the I circuit. In this case, with a relatively coarse coordinate setting, it is possible to get clear boundaries of the corrected particip. stk.

This refers to the case of the reproduction of color originals. In the case of black and white originals, the optoelectronic unit generates not three color signals, but one p-, bone (density) signal. The correction in this case is graded. The principle of operation is preserved.

Claims (1)

Invention Formula A device for reproducing reproduced images, including an opto-electronic unit, whose information outputs are connected to an image synthesis unit through one of the inputs of the first multiplexer, and two clock outputs are connected to a coordinate counter, two operative memories of color and coordinate color data, and a comparison circuit, its output connected to the counter of coordinates, which is different from the fact that, in order to expand technological capabilities, due to the implementation of color correction zbiratelno of image plane, the apparatus pre- prlnitelno administered block of shift registers, a coordinate input device and a second multiplexer, wherein the shift register unit with its input to the output of the first pod1slyuchen multi- ploksora, its: their intermediate outputs - to a circuit comparing and posledf g Y AT C B f 6 and one to puz. 2 Compiled by A. Dobrydnev Editor and Shulla Techred and Didyk Order 5996/47 Circulation 421 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company Uzhgorod, st. Project, 4 The output is to the image synthesis unit. The shift block sync inputs are combined with the clock outputs of the opto-electronic unit, the second multiplexer is connected to the output of the coordinate counter by its first input, the second input to the first output of the coordinate input device, and the control input to the second output of the coordinate input device, the output of the second the multiplexer is combined with the address inputs of both operative storage devices, the third output of the coordinate input device is combined with the recording enable inputs of both operative storage devices input data of the second random access memory, the input data of the first random access memory connected to the output of opto-electronic unit and its output - to the second input of the first multiplexer, whose control input is connected to the output of the second random access memory. 6183/0 Proofreader V. Booth ha