RU55467U1 - DEVICE FOR RAST RECORDING IMAGES TO PHOTO - Google Patents

Abstract

This useful model relates to the field of unique instrumentation and is intended to create special equipment for recording images on a photo carrier. The innovation can be applied in the construction of photoplotters to obtain: color-separated photoforms for printing of all types; dissected originals for multi-color printing of topographic maps, schemes, promotional materials and packaging; master templates for printed circuit boards, remotes, LCD display panels; halftone copies according to the results of processing biomedical data. To improve the quality of reproduced images due to the possibility of high-density raster recording on photographic film into a device containing two information storage registers with outputs to three states for each category, first and second delay registers, odd and even information buses, LED backlight input, information recording input into registers and two parallel lines of LEDs, optically connected through the lens to a photo-carrier, and the outputs of the first information storage register are connected bitwise with the corresponding LEDs of the first line, and the outputs of the second register of information storage are connected bitwise with the corresponding LEDs of the second line, the odd information buses are connected through the first delay register to the corresponding inputs of the second delay register, the backlight input of the LEDs is connected to the control inputs of the transfer from the third to the active state of the first and second information storage registers, the input of information recording in the registers is connected to the corresponding inputs of the first and second delay register and of the second and second storage registers, additionally introduced the third and fourth delay registers, two multiplexers with the first and second groups of inputs, an inverter and an input of the image output direction, the even data buses being connected to the first group of inputs of the first multiplexer and through the third and fourth delay registers to the second the group of inputs of the second multiplexer, the outputs of which are connected to the corresponding inputs of the second register of information storage, the odd information buses are connected to the first group of the second multiplexer, and the outputs of the second delay register to the second group of inputs of the first multiplexer, the outputs of which are connected to the corresponding inputs of the first information storage register, the information recording input is connected to the corresponding inputs of the third and fourth delay registers, the image output direction input is connected to the control input of the first group of inputs of the first the multiplexer and the control input of the second group of inputs of the second multiplexer, and through an inverter with the control input of the second group, the input of the first the multiplexer and the control input of the first group of inputs of the second multiplexer.

Description

This useful model relates to the field of unique instrumentation and is intended to create special equipment for recording images on a photo carrier. The innovation can be applied in the construction of photoplotters to obtain:

color-separated photo forms for all types of printing;

dissected originals for multi-color printing of topographic maps, schemes, promotional materials and packaging;

master templates for printed circuit boards, remotes, LCD display panels;

halftone orthophotomaps according to the results of processing aerospace images of the Earth;

halftone copies according to the results of processing biomedical data.

Practical implementations of such systems are carried out by using a spatio-temporal scan of the focused laser light beam with its synchronous intensity modulation along the photocarrier surface [1]. However, for the successful functioning of this type of photoplotter, serious development of nodes for precise deflection and modulation of laser radiation was required [2]. The electron-optical recording scheme using a laser beam scan does not provide the necessary resolution and scanning angle, and mechanical systems are difficult to manufacture and sensitive to recording conditions. When recording with a laser beam on a flat surface, it is necessary to apply complex schemes for correcting distortions in the shape and position of the writing spot. Laser radiation modulators have serious requirements for their power system - they operate at high voltages and do not provide sufficient signal modulation depth. Often, such systems require stationary placement in a darkened room, as well as the presence of power systems with compressed air and water.

Replacing semiconductor gas lasers largely removes these

restrictions. In this case, a single-channel sequential recording of signals leads to a loss in the recording speed, which requires a substantial increase in the scanning speed and an increase in the power consumption of the radiation source. In this regard, increased demands are placed on signal transmission and beam control channels. These limitations are absent with multichannel parallel organization of the exposure system. Moreover, multi-channel recording is easier to use not using a series of scanning systems, but using multi-element emitters. The latter can be less powerful than lasers, since with multi-channel recording, high output performance is achieved with a relatively low speed of the photocarrier and low control frequencies in each channel. The most suitable as multi-element radiation sources are linear matrix LEDs. LEDs are characterized by high reliability and stability of the light signal level, uniformity of parameters, high speed, relatively low power consumption, the ability to control from integrated circuits and the ability to vary the shape of the spot. A line of an LED recorder, composed of separate lines, can have a significant number of points (up to 10 ⁴ ), which ultimately provides a higher geometric accuracy of the raster than in the case of a CRT or laser image scan. A comparative analysis of laser and LED registration systems [3] for various types of criteria indicates the decisive advantages of the latter when building raster printers.

An analog device [4] for raster recording of images contains a line of LEDs optically coupled to a photo carrier either through a lens or through a fiberglass block. The line of LEDs is made in an integrated manner on a single semiconductor substrate with a square aperture B for each LED and with the same distance between the LEDs, to which information buses of the device are connected bitwise through the storage register microchips.

The described design of a device for raster recording of images on a photo carrier has a low recording density and the impossibility of its use in obtaining precision photomasks for printing and cartography, master templates of printed circuit boards, information panels and LCD display panels, etc. This is because the gaps between the individual pixels of the recorded image when printing on high-resolution film are fully reproduced. If during registration on paper, the electrographic point “spreads” over the diffuse surface of the paper and the selected construct does not significantly affect the quality of the reproduced image, then when printing technological drawings onto film

it is unacceptable. Moreover, by simply reducing the step of the arrangement of the LEDs on the semiconductor substrate, this phenomenon cannot be eliminated due to technological limitations and cross optical phenomena.

An analog device provides the possibility of high-density raster recording on photographic film with adjacent topological rasters in the structure of the recorded microimage.

The prototype device [5] for raster recording of images on a photo carrier contains the first, second information storage registers with outputs to three states for each category, the first and second delay registers, odd and even information buses, LED backlight input, information recording input to the registers and two parallel LED arrays, optically coupled through a lens with a photocarrier and made integral way on a single semiconductor substrate with a square aperture of each LED and the same distance m between the LEDs, and the second line of LEDs is separated from the first by a distance equal to the side of the LED and is shifted relative to the first by the same distance. The outputs of the first information storage register are connected bitwise with the corresponding LEDs of the first line, and the outputs of the second information storage register are connected bitwise with the corresponding LEDs of the second line. Odd data buses are connected through the first delay register to the corresponding inputs of the second delay register. The backlight input of the LEDs is connected to the control inputs of the transfer from the third to the active state of the first and second information storage registers, the input of information recording in the registers is connected to the corresponding inputs of the first and second delay registers, and the first and second storage registers.

The described device for raster recording of images on a photo carrier provides illumination of a photo carrier in only one direction. As a result of this, significant time losses are required for the photocarrier to return to its original position. These losses are especially noticeable if you have to output images of large sizes, which are comparable to the direct output of the image and can be several hours.

The objective of this utility model is to eliminate this drawback by providing the ability to display images in two directions of movement of the photocarrier.

The problem is achieved in that in a device for raster recording of images on a photo carrier containing the first, second registers for storing information with outputs to three states for each category, the first and second delay registers, odd

and even information buses, an input for LED illumination, an input for recording information in registers, and two parallel LED arrays, optically coupled through a lens with a photocarrier and made integrally on a single semiconductor substrate with a square aperture of each LED and the same distance between the LEDs, the second line of LEDs spaced from the first by a distance equal to the side of the LED and shifted relative to the first by the same distance, while the outputs of the first register of information storage the links are connected bitwise with the corresponding LEDs of the first line, and the outputs of the second register of information storage are connected bitwise with the corresponding LEDs of the second line, the odd data buses are connected through the first delay register to the corresponding inputs of the second delay register, the backlight input of the LEDs is connected to the control inputs of the transfer from the third to the active the state of the first and second information storage registers, the input of the information recording in the registers is connected to the corresponding inputs of the first and second of the first delay register and the first and second storage registers, the third and fourth delay registers, the first and second multiplexers with the first and second groups of inputs, an inverter and the input of the image output direction are additionally introduced, and even information buses are connected to the first group of inputs of the first multiplexer and through the third and the fourth delay registers to the second group of inputs of the second multiplexer, the outputs of which are connected to the corresponding inputs of the second register of information storage, odd information the buses are connected to the first group of the second multiplexer, and the outputs of the second delay register to the second group of inputs of the first multiplexer, the outputs of which are connected to the corresponding inputs of the first information storage register, the information recording input is connected to the corresponding inputs of the third and fourth delay registers, the image output direction input is connected to the control input of the first group of inputs of the first multiplexer and the control input of the second group of inputs of the second multiplexer, and through the inverter with the input of the second group, the input of the first multiplexer and the control input of the first group of inputs of the second multiplexer.

The essence of the utility model is illustrated by the functional electrical circuit of the device.

The inventive device for raster recording of images on a photo carrier, contains the first and second registers of information storage 1-2 with outputs to three states for each category, the first and second delay registers 3-4, odd and even information buses 5-6, input 7 of the LED illumination , input 8 records information in the registers and two parallel lines of 9-10 LEDs, optically coupled through the lens 11 with a photocarrier 12 and made integral way on a single semiconductor

a substrate with a square aperture of each LED and the same distance between the LEDs, the second line of LEDs being spaced from the first by a distance equal to the side of the LED and shifted relative to the first by the same distance, as well as the third and fourth delay registers 13-14, the first and second multiplexers 15-16 with the first and second groups of inputs 17-18 and 19-20, inverter 21 and input 22 of the image output direction. The outputs of the first information storage register 1 are connected bitwise with the corresponding LEDs of the first line 9, and the outputs of the second information storage register 2 are connected bitwise with the corresponding LEDs of the second line 10. Odd information buses 5 are connected to the corresponding inputs of the second delay register 4 through the first delay register 3. Input the illumination of 7 LEDs is connected to the control inputs of the transfer from the third to the active state, the first and second registers of information storage 1-2. The input 8 of information recording in the registers is connected to the corresponding inputs of the first and second delay registers 3-4, as well as the first and second storage registers 1-2. The even information buses 6 are connected to the first group of inputs 18 of the second multiplexer 16 and through the third and fourth delay registers 13-14 to the second group of inputs 20 of the second multiplexer 16, the outputs of which are connected to the corresponding inputs of the second information storage register 2. The odd information buses 5 are connected to the first group 17 of the first multiplexer 15, and the outputs of the second delay register 4 to the second group of 19 inputs of the first multiplexer 15, the outputs of which are connected to the corresponding inputs of the first register of information storage Rams 1. The input of the information recording 8 is additionally connected to the corresponding inputs of the third and fourth delay registers 13-14. The input 22 of the image output direction is connected to the control input of the first group of inputs 17 of the first multiplexer 15 and the control input of the second group of inputs 20 of the second multiplexer 16, and through the inverter 21 with the control input of the second group of inputs 19 of the first multiplexer 15 and the control input of the first group of inputs 18 of the second multiplexer 16.

A device for raster recording images on a photo carrier works as follows. In the initial state, information storage registers 1-2, delay registers 3-4, 13-14 are in the zero state. At the input 7 of the illumination of the LEDs, the input 8 of information recording in the registers and the input 22 of the image output direction is a zero level of potential. As a result of this, based on the zero potential at the backlight input 7, the information storage registers of 1-2 LEDs are in the third state. This leads to the fact that connected to the information storage registers 1-2, all the LEDs of the lines 9-10 do not emit light.

Under the action of the zero potential at input 22, the inverter 21 forms a unit potential, which connects the second group of inputs 19 of the first multiplexer 15 and the first group of inputs 18 of the second multiplexer 16. As a result, the following circuit will be organized for information on the odd buses 5: odd buses 5 , delay register 3. delay register 4, multiplexer 15, information storage register 1. line 9 with odd LEDs, and for information on even buses 6 the following chain: even buses 6, second multiplexer 16, storage register I have information 2, line 10 with even LEDs. Photo carrier is brought to the beginning of the displayed image. Moreover, this position is characteristic of the beginning of the first row and its beginning coincides with the location of the second LED line 10 in front. This state is characteristic when the image is displayed during the movement of the photo carrier, for example, from left to right. Work when displaying images with this direction is practically no different from the operation of the prototype device.

At the first signal at the input of record 8 to the information storage register 1 from the delay register 4, the zero information will be overwritten through the first multiplexer 15, the information received from the first column via the odd buses 5 will be written into the delay register 3, and the information from the same first column will be written over the even buses 6 through the second multiplexer 16 - to the information storage register 2. The signal at the backlight input 7 will open the information storage registers 1-2. However, due to the fact that the information storage register 1 contains zero information, the LEDs of the first line 9 will not emit light. The light will be emitted by the LEDs of the second line 10, connected to the bits of the register 2, which store the individual information of the first column. The glow of the LEDs is determined by the duration of the signal at input 7 of the illumination. After the luminescence ceases, the photo carrier moves one column with respect to the front-facing line 10.

At the second signal, at the input of record 8 to the information storage register 1, from the delay register 4, the zero information will be rewritten through the first multiplexer 15, from the delay register 3 the information of the first column stored in it is overwritten into the delay register 4, the information of the second column via the odd buses 5 will be is recorded in the delay register 3, and the information of the second column on the even buses 6 through the second multiplexer 16 is in the register 2. The signal at the backlight input 7 will open registers 1-2 again. As before, due to the fact that register 1 contains zero information, the LEDs of the first line 9 will not emit light. The light will be emitted again only by the LEDs of the second line 10 connected to the bits of the information storage register 2, which store the unit information of the second column. Their glow will also be determined

the duration of the signal at the backlight input 7. After the luminescence ceases, the photo carrier moves again by one column.

According to the third signal at the input 8 of the record in the information storage register 1 from the delay register 4, the information on the first column will finally be rewritten through the first multiplexer 15, the information of the second column from the delay register 3 is written into the delay register 4, the information of the third column via the odd buses 5 will still be recorded in the delay register 3, and the information of the third column on the even buses 6 through the multiplexer 16 - in the information storage register 2. Again, the signal at the backlight input 7 will open the information storage registers 1 and 2. This time LEDs of the first line 9 connected to the bits of register 1, which store single information on the first column, will emit light. The first line of 9 LEDs this time will be in place of the already recorded second line of 10 LEDs of the first column and in the intervals between the points of the first column already illuminated by individual LEDs, it will illuminate the photo carrier in accordance with the information currently stored in the first column. After that, the first column will be fully displayed on the photo wall. The LEDs of the second line 10 connected to the bits of the information storage register 2, which store single information on the third column, will at this time provide illumination of individual points of the third column. Next, the photo carrier again moves to one column. Subsequent signals at the inputs of recording 8 and exposure 7 with the subsequent movement of the carrier will provide illumination of the next columns. In this case, the illumination of the first line of 9 LEDs will lag behind the illumination of the second line of 10 LEDs in two columns.

After the last column is transmitted to the illumination, the device receives zero information on two columns outside the line and the signals necessary for their recording on the recording inputs 8 and flare 7. As a result, the first line of 9 LEDs illuminates the photocarrier according to the two data storage registers delayed 3 and 4 columns. After that, the first line will be completely displayed. Further, the photo carrier moves only to the position of the second line without returning to its beginning, but remains at the position of the end of the second line. In this position, the first line of 9 LEDs is ahead and is in the position to start flashing. The second line of 10 LEDs is outside the second row.

To output the image in the opposite direction to the input 22, the output direction of the image is a single level. This level connects to the work the first group of inputs 17 of the first multiplexer 15 and the second group of inputs 20 of the second multiplexer 16. As a result, already for information on even buses 6 will be organized

the following circuit: even buses 6, delay register 13, delay register 14, second multiplexer 16, information storage register 2, line 10 with even LEDs, and for information on odd buses 5, the following chain: even buses 5, first multiplexer 15, register information storage 1, line 9 with odd LEDs.

When displaying the image of the second row, the transmitted information comes from the last column of the row to the first. According to the signals of the inputs of recording 8 and flashing 7, the first line of 9 LEDs will light up, and the second line 10 will be two columns behind. Setting the delay registers 13 and 14 to zero is not necessary in this case. They already recorded zero information at the completion of the output of the first line. This will make it possible to clearly form the edge of the line, since again the first two pairs of signals of the recording 8 and input 7 input signals will not provide a glow of the LEDs of the second line 10. For the transfer of the photocarrier from the beginning of the second line, it is again necessary to transmit two zero columns with their subsequent output.

Further operation of the devices is carried out in a similar way. The photo carrier after the output of the line moves to the line below, and at the input 22, the image output direction changes the signal level to the opposite. For odd lines, it has a zero value, and for even lines it has a single value. At the same time, the sequence of transferring information to the device also changes. For odd lines, it is transmitted from the first column to the last, and for even lines, from the last to the first.

Thus, the proposed device for raster recording of images on a photo carrier provides image output in two directions, thereby doubling productivity.

Information sources:

1. Erokhovets V.K., Lipen V.Yu., Pustovoit G.V., Tarasov B.V. A set of information output tools for raster computer graphics systems. In: Computer Peripherals and Systems. M .: MDNTP, 1991, S.83-87.

2. Specifications for the image generator EM-5139.

3. JiroOi, Aideo Taniguchi, Airomi Ogata. Low cost LED printhed. Proceeding of SPIE, N.Y., 1993, Vol. 1827, p. 287-291.

4. Toshio Inouse. Optical printer head. Patent USA No. 4,779,108.

5. Patent of the Republic of Belarus No. 626, IPC G 01 D 15/14, G 11 B 7/125, publ. 2002. (prototype).

Claims (1)

A device for raster recording of images on a photo carrier containing the first, second information storage registers with outputs to three states for each category, the first and second delay registers, odd and even information buses, the LED backlight input, the information recording input into the registers and two parallel LED arrays optically coupled through a lens with a photocarrier and made integrally on a single semiconductor substrate with a square aperture of each LED and the same distance between diodes, and the second line of LEDs is separated from the first by a distance equal to the side of the LED and is shifted relative to the first by the same distance, while the outputs of the first register of information storage are bitwise connected to the corresponding inputs of the first line of LEDs, and the outputs of the second register of information storage are bitwise connected with the corresponding inputs of the second line of LEDs, the odd information buses through the first delay register are connected to the corresponding inputs of the second delay register, the input for the LED branches are connected to the control inputs of the transfer from the third to the active state of the first and second information storage registers, the input of the information recording in the registers is connected to the corresponding inputs of the first and second delay register and the first and second information storage registers, characterized in that the third and the fourth delay registers, the first and second multiplexers with the first and second groups of inputs, the inverter and the input of the image output direction, and even information buses are connected to the first group of inputs of the second multiplexer and through the third and fourth delay registers to the second group of inputs of the second multiplexer, the outputs of which are connected to the corresponding inputs of the second information storage register, the odd information buses are connected to the first group of the first multiplexer, and the outputs of the second delay register to the second group of inputs of the first a multiplexer, the outputs of which are connected to the corresponding inputs of the first information storage register, the information recording input is connected to the corresponding inputs by the odes of the third and fourth delay registers, the input of the image output direction is connected to the control input of the first group of inputs of the first multiplexer and the control input of the second group of inputs of the second multiplexer, and through an inverter with the control input of the second group of inputs of the first multiplexer and the control input of the first group of inputs of the second multiplexer.