SU600578A1

SU600578A1 - Graphic information readout device

Info

Publication number: SU600578A1
Application number: SU752134816A
Authority: SU
Inventors: Исаак Давыдович Маергойз; Станислав Сергеевич Забара; Владислав Георгиевич Сахарин
Original assignee: Ордена Ленина Институт Кибернетики Ан Украинской Сср
Priority date: 1975-05-14
Filing date: 1975-05-14
Publication date: 1978-03-30

Description

Изобретение относитс к автоматике и вычислительной технике и может быть ислользовано дл счйтьшани и ввода графической информации в электронные вычислительные машины (ЭВМ).The invention relates to automation and computer technology and can be used to scan and enter graphic information into electronic computers.

Известны устройства дл счйтьшани графичес- g кой информации Ц, содержащие планшет из электропроводного материала, окантованный линейными контактными шинами, и съемник информации - контактный считьшакщий элемент. Эквипотенциальные линщ, .определ ющие координаты точки npnKOCjo новени контактного считьтающего элемента, создаютс разностью напр жений переменной пол рности, приложенной через диоды к линейным контактным шинам.There are known devices for reading graphic information C, containing a tablet of electrically conductive material, edged with linear contact tires, and an information remover, a contact joint element. The equipotential lines that determine the coordinates of the npnKOCjo point of a new contacting element are created by the difference in the voltage of the alternating polarity applied through the diodes to the linear contact buses.

Однако в таких устройствах съем координат 15 точек графичеосого изображени происходит при непосредственном контакте считьшакщего элемента с резистивной поверхностью планшета и, следовательно , графическое изображение ие может быть вьшолнено на листе удобной в обращении обьи- 20 ной бумаги, а должно вычерчиватьс на специальной резистивной поверхности, что св зано с определенными трудност ми при подготовке и осуществлении процесса ввода в ЭВМ графической информации. К этим трудност м следует отнести, например, невоз- 25However, in such devices, the removal of the coordinates of 15 points of the graphical image occurs by direct contact of the shaking element with the resistive surface of the tablet and, therefore, the graphic image can not be executed on a sheet of easy-to-use paper, and should be drawn on a special resistive surface, which It is associated with certain difficulties in preparing and implementing the process of entering graphic information into a computer. These difficulties should include, for example,

можность получени (нанесени на специальную резистивную поверхность) графического изображени с помощью современной множительной техники, невозможность получени копии вводимого графического изображени , т. е. устройство имеет ограниченную область применени .the possibility of obtaining (applying to a special resistive surface) a graphic image using modern multiplying technology, the impossibility of obtaining a copy of the input graphic image, i.e., the device has a limited scope.

Известно также наиболее близкое по технической сущности к изобретению устройство 2, содержащее планщет из электрсшроводного материала , окантованный по периметру линейными контактными шинами, соединенными через один из ключей с источником напр жени , и съемник информации, причем управл ющие входы ключей подключены к выходам мультивибратора.It is also known that the device 2, which is closest to the technical essence of the invention, contains plates made of electrically conductive material, edged around the perimeter with linear contact buses connected via one of the keys to the voltage source, and an information remover, the control inputs of the keys connected to the outputs of the multivibrator.

Недостатком такого утсройства вл етс ограниченна область применени , обусловленна указанными причинами.The disadvantage of such a device is the limited scope due to these reasons.

Цель изобретени - расширение области применени устройства.The purpose of the invention is to expand the field of application of the device.

Claims

This is achieved by introducing phase shifters into the device, one of which is connected to an information remover and the other to other keys, and a phase meter whose inputs are connected to phase shifters. The drawing shows a diagram of a device for reading out graphical information. The device contains a tablet 1 of electrically conductive material, edged with linear contact tires 2, the phase shifter is a phase-shifting capacitor 3, which is connected to the linear tires 2 using keys 4 and 5 for the first and second time cycles, respectively. The source of sinusoidal voltage (not shown in the drawing) is connected to the linear contact buses 2 of the plate 1 with the keys 6 and 7 to the terminal of the power supply. The keys are controlled by the multivibrator 8 switches. The measured voltage phases are fed to the phase meter 9 from the phase shifter - capacitor 10 by means of an information puller 11. The device works as follows. In the first time step, the multivibrator 8 opens 4 quintals 6. In this case, the voltage phase changes in the plane of the plate 1 relative to the voltage on the phase shifter - the capacitor 3 from left to right along the horizontal line buses, while the vertical line buses are equiphases. In the second time step, the multivibrator 8 clears the keys 5 and 7 and the phase change occurs from top to bottom along the vertical linear busbars the horizontal tires will at the moment be equiphases. Since the capacitor 10 is connected in series with the capacitance counter element — the plate and forms a capacitive voltage divider with it — the voltage on the capacitor 10 during any fluctuations in capacitance between the read element and the tablet has the same phase as the voltage on the plate at the point over which there is a matching element. Measured with the help of a phase meter at the point of contact of the counting element, the phase values relative to the voltage on the phase-shifting capacitor are transferred in a digital code to a computer. The coordinates of the touch point are determined in a computer by the following formulas: where i and i are the voltage phases, measured e; in radius, respectively, on the first and second bars; a - the length of the horizontal sides of the tablet; R is the resistance of horizontal linear tires; b - the length of the vertical sides of the tablet; R is the vertical resistance of the liner in. When Fu and Fu vary from O to / 6 (from up to 30 °) j, which is achieved by appropriately adjusting the capacitance of the phase-shifting capacitor, the supply voltage frequency and the resistance of the linear contact buses, the graphic representation on the dialect of the original carrier with a high accuracy the quality of which can be used ordinary paper, provides ease of operation with the device and expands its scope in those when you need to get a copy of the input graphic image or input must It is already imeyushih; EGOS document. Apparatus of the Invention A device for reading graphic information containing a planetary surface made of electrically conductive material, edged around the perimeter with linear contact buses connected through one of the keys to a voltage source, control inputs of the keys connected to the outputs of the multivibrator, and an information remover, characterized in that the purpose of expanding the area: application of the device, it contains phase shifters, one of which is connected to an information remover and the other to other keys, and a phase meter, whose inputs are connected yucheny to phase shifters m. Sources of information taken into account in the examination: 1. USSR Copyright Certificate № 402031, cl. G H 11/00, 1970.

2 .. USSR author's certificate N 225591, cl. G 06 K 11/00, 1967.

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