SU711700A1

SU711700A1 - Device for sensing and recording photographic information

Info

Publication number: SU711700A1
Application number: SU772557660A
Authority: SU
Inventors: Михаил Федорович Шабанов
Original assignee: Специальная Астрофизическая Обсерватория Ан Ссср
Priority date: 1977-12-21
Filing date: 1977-12-21
Publication date: 1980-01-25

Description

Изобретение относится к телевидению.The invention relates to television.

Известно устройство считывания и записи фотографической информации, содержащее блок электроприводов, а также блок считывания, оптически связанный с источником света, блок строчной синхронизации и отсчета координат по строке и блок построчной синхронизаций и отсчета координат по строкам, подключенные к соответствующим входам блока обработки и управления, к одному из входов которого подключен блок записи П}.A device for reading and recording photographic information containing an electric drive unit, as well as a reader unit optically coupled to a light source, a line synchronization unit and a coordinate coordinate line reading and a line synchronization unit and a line coordinate reading unit connected to corresponding inputs of the processing and control unit, to one of the inputs of which a recording unit П} is connected.

Однако известное устройство не обеспечивает требований по синхронизации, скорости считывания и записи.However, the known device does not provide requirements for synchronization, read and write speeds.

Цель изобретения - упрощение развертки при считывании и записи, упрощение синхронизации разверток считывания и записи, увеличение скорости считывания и записи, а также обеспечение плавного изменения масштаба изображения.The purpose of the invention is to simplify the sweep during reading and writing, to simplify the synchronization of sweeps of reading and writing, to increase the speed of reading and writing, as well as to ensure smooth zooming.

Для этого в устройство считывания и записи фотографической информации, со— держащее блок электроприводов, а также блок считывания, оптически связанный с источником света, блок строчной синхронизации и отсчета координаты по строке и блок построчной синхронизации и отсчета координаты по строкам, подключенные к соответствующим входам блока обработки : и управления, к одному из выходов которого подключен блок записи, введены диск считывания с укрепленной на нем рамкой для оригинала, диск записи с укрепленной на нем рамкой для фотопленки, трубчатая ось, на которой установлены перпендикулярно к ней диски считывания и записи, винт и подвижная гайка, установленные между дисками считывания и записи на трубчатой оси, пантографическая система, связывающая подвижную гайку, скользящую по винту, с рамками для оригинала и фотопленки, при этом блок электроприводов подключен к соответствующему выходу блока обработки и управления и связан с трубчатой осью.For this purpose, a photographic information reader and writer containing an electric drive unit, as well as a reader unit optically coupled to a light source, a line synchronization unit and a line coordinate reference unit, and a line synchronization unit and a line coordinate reference unit connected to corresponding inputs of the unit processing and control, to one of the outputs of which a recording unit is connected, a read disk with a frame for the original attached to it, a recording disk with a frame for film fixed on it, are introduced the roll axis, on which read and write disks are mounted perpendicular to it, a screw and a movable nut installed between the read and write disks on the tubular axis, a pantographic system connecting the movable nut sliding on the screw with the frames for the original and film, while the block electric drives connected to the corresponding output of the processing and control unit and connected to the tubular axis.

На чертеже дана схема предлагаемого устройства.The drawing shows a diagram of the proposed device.

Устройство содержит блок электроприводов 1, блок считывания 2, источник света 3, блок 4 строчной синхронизации и отсчета координаты по строке, блок 5 построчной синхронизации и отсчета координаты по строкам, блок 6 обработки и управления, блок записи 7, диск считывания 8, рамку 9 для оригинала, диск записи 10, рамку 11 для фотопленки, трубчатую ось 12, винт 13, подвижную гайку 14, пантографическую систему 15.The device comprises an electric drive unit 1, a read unit 2, a light source 3, a line synchronization and reference block 4 for a row, a line synchronization and coordinate block 5 for a row, a processing and control unit 6, a recording unit 7, a read disk 8, a frame 9 for the original, a recording disc 10, a frame 11 for film, a tubular axis 12, a screw 13, a movable nut 14, a pantographic system 15.

Устройство работает следующим образом.The device operates as follows.

Как и в обычных микрофотометрах, неподвижными остаются блоки считывания 2 и блоки записи 7. Относительно их движутся считываемое изображение и фотопленка. Строчная развертка по дуге окружности на диске осуществляется благодаря их вращению. При этом блок считывания 2 элемент за элементом преобразует почернения на считываемой строке в электрический сигнал, который поступает в блок 6 обработки. Развертка по строкам осуществляется непрерывным радиальным движением рамок 9 .и 11 с оригиналом и фотопленкой. При каждом обороте дисков и подвижной гайки 14 она подни•мается или опускается по оси на шаг вин» та 13 и соответственно перемешает лан. тографическую систему 15 из двух прямо· угольных треугольников. По их гепотенузам скользят ползунки 16, которые при движении треугольников по оси скользят по направляющим 17 в радиальном отно. сительно дисков направлении. От ползунков движение передается с помощью гибких соединений 18 к рамкам 9 и 11 с оригиналом и фотопленкой.As in conventional microphotometers, reading units 2 and recording units 7 remain stationary. Relative to them, the read image and film are moving. Horizontal scanning along an arc of a circle on a disk is carried out due to their rotation. At the same time, the reading unit 2 element by element converts the blackening on the read line into an electrical signal, which enters the processing unit 6. Scanning the lines is carried out by the continuous radial movement of the frames 9. And 11 with the original and film. At each revolution of the disks and the movable nut 14, it rises or falls along the axis by the pitch of the wines ”13 and accordingly mixes the lan. 15 graphic system of two right · angular triangles. The sliders 16 slide along their hepatotenuses, which, when the triangles move along the axis, slide along the guides 17 in radial relation. relative to drive direction. From the sliders, the movement is transmitted using flexible connections 18 to the frames 9 and 11 with the original and film.

За один оборот дисков рамки 9 и 11 перемещаются на ширину строки, равную шагу винта 13, умноженному на тангенс угла с£ . Отрезки треугольников определяют длину развертки по строкам и масштаб записываемого изображения относительно считываемого. Движение рамок 9 и 11 на дисках противоположно, что позволяет несколько компенсировать децентровки сис темы, возникающие из-за движения по дискам рамок 9 и 11. При строчной развертке по дуге окружности ширина строки уменьшается от середины к краям пропорционально косинусу угла поворота диска на полстроки. Так, при длине строки 90° ширина ее на концах составит 0,7 от ширины в середине, при 50 соответ711700 . 4 ственно 0,9. Эффект изменения ширины строки устраняется соответствующим изменением ширины элемента разрешения поперек строки или обработкой в электрон5 но—вычислительной машине. При длине строки менее 50° поворота диска изменение ширины строки можно не учитывать даже при высокоточной фотометрической и координатной обработке фотоизображений.For one revolution of the disks, the frames 9 and 11 are moved by a line width equal to the pitch of the screw 13 times the tangent of the angle c £. Triangle segments determine the scan length in rows and the scale of the recorded image relative to the read image. The movement of frames 9 and 11 on the disks is opposite, which allows one to somewhat compensate for the decentralization of the system that occurs due to the movement of the frames 9 and 11 along the disks. When line scanning along an arc of a circle, the line width decreases from the middle to the edges in proportion to the cosine of the angle of rotation of the disk by half a line. So, with a string length of 90 °, its width at the ends will be 0.7 of the width in the middle, with 50 corresponding to 711700. 4 actual 0.9. The effect of changing the line width is eliminated by a corresponding change in the width of the resolution element across the line or by processing in an electronic computer. When the line length is less than 50 ° of the disk rotation, the change in the line width can be ignored even with high-precision photometric and coordinate processing of photo images.

Для обработки всегда желательно сделать длину строки на максимальном формате обрабатываемого изображения меньше 60 оборота диска. Это условие выполняется, если диаметр дисков в 2,5-3 раза ¹⁵ больше максимального формата обрабатываемого изображения. С целью уменьшения биений из-за децентровки, вызываемой перемещением рамок 9 и 11 с оригиналом и фотопленкой по дискам, их масса 20 должна быть во много раз больше, чем масса рамок, а крепление дисков к оси должно позволять раМкам двигаться по диаметрам чёрез центры дисков. При этом . наличие двух симметричных вырезов на ²⁵ диске считывания позволяет считывать и записывать одновременно два изображения немаксимального формата и тем самым г даже при длине строки до 60° около трети оборота диска будет идти считывание ³⁰ и запись.For processing, it is always advisable to make the line length at the maximum format of the processed image less than 60 disk revolutions. This condition is satisfied if the diameter of the disks is 2.5-3 times ¹⁵ greater than the maximum format of the processed image. In order to reduce beating due to the decentration caused by the movement of the frames 9 and 11 with the original and the film on the disks, their mass 20 should be many times greater than the mass of the frames, and mounting the disks to the axis should allow the frames to move along the diameters through the centers of the disks . Wherein . the presence of two symmetrical cutouts on the ^25th read disk allows you to read and write two images of non-maximum format at the same time, and thus, even with a line length of up to 60 °, about ^{30 of the} disk revolution will read ³⁰ and write.

Claims

The invention relates to television. A device for reading and writing photographic information is known, which contains a block of electric drives, as well as a block of reading optically connected with a light source, a block of horizontal synchronization and a row coordinate reading, and a row synchronization and row coordinate block connected to the corresponding inputs of the processing unit and control, to one of the inputs of which the recording unit C13 is connected. However, the known device does not provide the requirements for synchronization, read speed and write speed. The purpose of the invention is to simplify the scan when reading and writing, to simplify the synchronization of read and write scans, to increase the speed of reading and writing, as well as to ensure smooth zooming of the image. To do this, a readout device and a photographic information device containing an electrically driven unit, as well as a reading unit optically connected to a light source, a horizontal synchronization unit and a coordinate unit for a row and a sequential unit of synchronization and a coordinate unit for lines connected to the corresponding inputs of the processing unit : and controls, to one of the outputs of which a recording unit is connected, a read disk with a reinforced is inserted} on it is a frame for the original, a recording disk with a frame for film fixed on it, the axle on which the read and write disks are mounted perpendicular to it, the screw and the movable nut installed between the read and write disks on the tubular axis, the pantograph system that connects the movable nut sliding on the Victory, with frames for the original and photographic film, wherein the motor drive OB is connected to the corresponding output of the work and control unit and is connected to the tubular axis. The drawing is a diagram of the device proposed. The device comprises a block of electric drives 1, a block of reading 2, a light source 3, a block 4 of horizontal synchronization and reference coordinates on a line, block 5 of line synchronization and reference coordinates on lines, a processing and control block b, a recording block 7, read disk 8, original frame 9, disk for record 1O, frame 11 for film, tubular axis 12, screw 13, movable nut 14, pantographic system 15. The device works as follows. As with conventional microphotometers, the read blocks 2 and the write blocks 7 remain fixed. The read image and the film are moving relative to them. The line sweep along an arc of a circle on a disk is performed due to their rotation. At that, the reading unit 2 element by element converts the blackening on the readable line into an electrical signal, which is fed to the processing unit 6. Scanning in rows is carried out by continuous radial movement of frames 9 and 11 with the original and photographic film. At each turn of the discs and the movable nut 14, it rises or falls axially on the pitch of the screw 13 and accordingly moves the data. 15 of two direct triangles. According to their hepatotheses, sliders 16 slide, which, when the triangles move along the axis, slide along the guides 17 in a radial relation. drive direction. From the sliders, motion is transmitted using flexible connections 18 to frames 9 and 11 with the original and photographic film. During one revolution of the discs, the frames 9 and 11 are moved by the line width equal to the pitch of the screw 13 multiplied by the tangent of the оС angle. The triangles determine the length of the sweep by the lines and the scale of the recorded image relative to the readable one. The movement of frames 9 and 11 on the discs is opposite, which somewhat compensates for the decentering of the pattern arising from the movement on the discs of frames 9 and 11. When the line is swept along an arc of a circle, the widths of the lines decrease from the middle to the edges in proportion to the cosine of the angle of rotation dis ka half line. So, if the length of the line is 90, its width at the ends will be 0.7 5O- correspondingly FROM the width in the middle, correspondingly 0.9. The effect of changing the width of the line is eliminated by a corresponding change in the width of the resolution element across the line or by processing in an electronic computer. If the length of the line is less than the rotation of the disc, the change in the width of the line can be ignored even with high-precision photometric and coordinate processing of photo images. For processing, it is always advisable to make the length of the line at the maximum format of the processed image less than 60 disk turns. This condition is satisfied if the diameter of the disks is 2.5-3 times the maximum format of the processed image. In order to reduce beats due to decentering caused by moving frames 9 and 11 with the original and film on disks, their mass should be many times larger than the frame weight, and mounting the disks to the axis should allow frames to move in diameters through the centers of the disks . At the same time, the presence of two symmetrical cutouts on the read disk allows you to read and write simultaneously two images of a non-maximal format and, thus, even with a line length of up to 60 about three turns of the disk, read and write will go. Claim device A device for reading and writing photographic information, comprising a block of electric drives, as well as a block of reading optically connected to a light source, a block of horizontal synchronization and counting coordinates for a row and a block of progressive synchronization and counting coordinates for rows connected to the corresponding inputs of a processing unit and control, to one of the outputs of which is connected to the recording unit. Distinguished by the fact that, in order to simplify the sweep when reading and writing, simplify the synchronization of scan sweeps In order to increase read and write speeds, as well as ensure smooth zooming, a read disk with a fixed frame for the original is inserted, aapks disk with a fixed frame for film, a tubular axis, which is perpendicular to it read and write drives, a screw and a movable nut installed between the read and write discs