DE1524264C3 - Device for generating an image recording - Google Patents

Description

The invention relates to a device with an electronic image display device and Circuitry for generating an image record.

Devices of the type mentioned are often used for the projection of drawings and graphic representations in the analytical treatment of physical and other problems, especially in lectures and lectures. To control the image recording, it is known (references "American Federation or £ Information Processing Societies Proceedings", May 1963, pages 323 to 329 and 347; October 1964, pages 325 and 363) to use digital computers, in particular electronic computers. Such devices have many advantages, but require a broadband transmission channel with high transmission speed between the computer and the image display device. In addition, a large part of the working time and storage capacity of the computer is consumed. These disadvantages have practically limited the use of such computers and memories for controlling the image recording to those cases in which the playback device is arranged in the immediate vicinity of the computer and in which the information for the image recording can largely be determined in advance.

The object of the invention is to provide a device for generating an image recording to create which a reduction in the required bandwidth of the transmission channel between the central computer and the playback device as well as a reduction in the required computer capacity allows and which, moreover, a more rapid control and change of the image recording enables.

In a device of the type mentioned at the outset, the object is achieved according to the invention by the Features in the characterizing part of claim 1 solved.

Further advantageous refinements of the inventive concept are set out in claims 2 and 3 marked.

The device according to the invention can (beyond the solution of the problem in connection

»5 with suitable programming of the control computer a maximum of possible variations of the image recording with relatively little Circuit effort can be achieved. The handling of the device according to the invention is designed particularly easy because the light-sensitive probe gives commands for the desired changes only in the manner of a pointing or writing instrument during the image recording The area of the corresponding command characters is to be brought on the screen of the playback device.

The invention is explained in more detail using an exemplary embodiment; it shows

F i g. 1 is a block diagram of a device according to the invention,

F i g. 2 shows a more detailed block diagram of the left half of the block diagram according to FIG. 1 and

F i g. 3 shows a more detailed block diagram of the right half of the block diagram according to FIG. 1.

The device 100 according to the invention (FIG. 1) is connected to a central computer 200 by a transmission channel 300. In normal operation, the device 100 works independently, that is, the central computer 200 is only used when, for. B. the compilation of an image recording or the implementation of certain changes to the image recording would exceed the performance capacity of the device 100. The central computer 200 is also supplied with changed output signals from previous data processing as input signals for further processing. For this purpose, the central computer 200 receives corresponding signals from a control computer 150 via a buffer register 180 in a conventional manner. B. in the form of a break, the central computer 200 is controlled between successive operations. During such a pause, the output signals of the control computer 150 or the content of a storage playback network 110 can be transmitted directly to the buffer register 180 and then to the central computer 200 through a conventional network (not shown). The flow of information can also be reversed from

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central computer 200 for buffer register 180 and circuit symbols on screen 130 α then exist for control computer 150 or for re-should. In practice, a plurality of such command network 110 will be transmitted. Words are used which not only serve for the shift. In the device 100, all of the information required for or change, but also for the new formation of image recording, is used for the 5 picture elements.

Playback network 110, which feeds the playback and image recording of the resistance switching pointer 130. The playback device 130 has a movable, light-sensitive probe 131, 130 α, begins at point X 1, Y1 on the screen and ends at point X 2, Y 2 drawing connected via an input / output network 170 io of the resistor at point X 3, Y 3. As the control computer 150 displayed and thereby from- Change the image recording should z. B. be redeemed. Until such a change is made, the resistance switching symbol is shifted from the image recording by signal groups, points Zl, Yl and X 2, Y 2 to the points X 3, which are viewed in a memory part of the display network Y 3 and X 4, Y 4.
110 are included and circulate there cyclically. Before the beginning of the change in the image recording, each signal group forms an information word converted into the machine contains the memory of the display network 110 which is specific information words. For each central computer 200 or in the control computer 150, the picture element shown in FIG. 1 is formed. Corresponding to the composition of a group of memory locations each one of such an information word is kept by the re-ao set of words, which on the one hand the output network 110 in the absence of commands to change information for image recording and on the other hand only the information for controlling the image recording on the other hand Picture-and-picture recording upright by means of the drawing included. The information words can have their own memory information instead of the zen z. B. consist of eight-digit binary numbers. Each central computer 200 output information. The information word comprises an operation part, which frees up storage capacity in the central computer 200, rather the type of operation to be carried out or the type of operation to be carried out, which specifies for other data processing to change the image recording, and. one is available. Instead of a separate memory, the operand part also specifies the information of nested access methods provided for the implementation of the nested access method provided for the display network 110 with the aid of time-assigned operation.

Memory of the control computer 150 at the same time as the sequence of an image recording is to be stored in the memory used for the display network 110, referring to the block diagram according to FIG. 2 will. will be explained in detail. As shown in FIG. 2 it can be seen in connection with what is to be explained in more detail, the display network 110 contains Triggering a change in the image recording 35 a circulation control network 111, the output of which is through the probe 131 controls the comparator 160 the signals an address register 113 for addressing Activate the release of an information exchange between an image display memory 115. In all of this Reproduction network 110 and the tax law, the addresses appear in the address identifier 150. A further exchange of information takes place in register 113 in chronological order. The Umüber the buffer register 180, which acts as an intermediate process control network 111, then increments for each subsequent memory its output signal for the central computer 200 and the opposing word of a picture element, different circuit parts of the device 100 is used. where the output signal with the smallest ampli-Das Buffer register 180 also enables the adaptation to be assigned to the first information word. Solution of different word lengths between the If the information word addressed in this way leaves various circuit parts of the device 100 45 image display memory 115, the operating and the information part of this information word transmitted to the central computer 200 in a decomposition. The converter 117 is implemented while the operand part for the image recording is in the reproducing device is being transmitted to the reproducing device 130. In which 130 an oscilloscope is provided, e.g. B. a cathode first phrase, which corresponds to the resistance switch ray tube with the usual beam deflection, corresponding to 50, the decoding of the opera shows speaking a Z-Y coordinate system. The ab- ration indicates that the operand part is information steering of the image recording point or image recording, which contains the workflow of the playback drawing beam can either be controlled in the same way as the device. When using a cathode ray, That the position of the image recording point tube includes the operand parts also the information in each case depends on the previous position, or 55 mations to control the scale and reflection that the position of the image recording point of all factors and the beam intensity as well as the input and

previous positions is independent. Deactivation of probe 131.

! In Fig. 1 is as a simple example of a again- The second information word of the resistance-

to be added image recording on the screen circuit symbol contains an operational part, which is decoded in 130 α of the playback device 130, the electrical 60 decoder 117, the playback

Circuit diagram of an IC element with the written out device 130 controls and the operand part in a

! The command word »CHANGE« is shown. An X coordinate register 133 of the reproducing device 130

j image recording consists of three separate image transfers, the content of register 133 being the

elements, namely from the circuit symbol of a corresponding coordinate position of the image recording resistor, a condenser and determined from the 65 voltage beam. Accordingly, the op-

Typeface of a command word. The latter is used for the edge part of the third information word in a

Triggering a change in the image recording, Y-coordinate register 135 of the playback device 130

which e.g. translates into the shift of one or more and determines the corresponding coordinate

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position of the imaging beam. In this exercise of the resistance circuit symbol of the coordinate mode, the image recording beam is set to the naten.il, Yl and X 2, Ύ 2 to the coordinates X 3, point.X "1, Yl (Fig. 1) as the starting position. Y 3 and X 4, is to be Y 4, the probe 131 is in the fourth information word of the Widerstandschalt- the vicinity of the screen 130 α again gege character includes an operation by which brought the 5 surrounded command word "CHANGE". in the differential deflection of the imaging beam exemplary case one is controlled for the image recording in the display device 130. In this cathode ray tube with afterglowing or deflection method, the left half of the operan fluorescent screen is used, so that the part of the image goes into the X coordinate register 133 and the image display between successive image right half into the Y -Coordinate register 135, which is retained on drawings. The probe 131 undergoes a differential shift A filter holds the step, which executes the response to the recording point placed in the place of an absolute position control of the image near the command word "CHANGE". Similar probe limited to the initial luminosity of the fluorine information words for the differential image deflection control screen. The probe 131 speaks tion transfer the image recording point step-15, therefore, only on the repetition of the Bildaufzetchschaltzeichen next to the alignment on the command, according to the lines of the resistance word in its end position X 2, Y 2, after which the voltage and applies a downstream Image reproduction of this picture element is finished. Control register 137 within the playback device

If all of the first picture element corresponds to 130 with a control signal. As control register 137

speaking word set the image display memory 20 can be a common register with binary memory

115 has passed, the first control word occurs, stages, e.g. B. bistable multivibrators, are used

which is a first jump command for the image. Spatially, the control register 137 can be within

drawing point corresponds to. The operating part of the playback device 130 or separately therefrom

The first control word will be decoded in the decoder 117.

since and · causes an output signal at an associated output. The control register 137 then delivers via a subordinate output labeled spr. This c a line and an input Ausgängs Scarf output signal is transmitted via the wire spr 1 of the initial processing 170 inputs to the control computer 150, output line slot interchanger 117 of the decoder α 117 whose block diagram in detail in F i g. 3 fed to the first input of an AND element 112. is posed. In order to link the X and Y coordinate operand parts of the first control word, which are located at the second input of the AND element 112 of the 30 playback devices 130, which data register 133 or 135 with the input output represents the address of the next word set, Switching circuit 170 or with the control computer 150, the AND element 112 goes through and transfers the to illustrate, the X and Y coordinates of its second input operand part registers 133, 135 in broken lines within to the downstream circulation control network 111. 35 of the input-output circuit 170 shown after completion of the image recording of the cons- (FIG. 3). For the same purposes, FIG. 3 A second control word occurs for the standard switching symbol, the control of the information circulation when it is repeated, a second jump command to output the address of the capacitor switching symbol corresponding to the image recording address is represented in broken lines within the record. The control of the workflow 40 input-output circuit 170 indicates whether by means of the last-mentioned phrase, this register is actually connected to the circulation as in the previous picture element (counter control network 111 (FIG. 2). Except for standard switching characters), although some Words which the input of an "L" signal for the control computer last-mentioned phrase is attached to additional information 115 via the input-output circuit 170, which the image beam suppression 45 acts the control register 137 via an OR gate during part of the image recording movement 119 at the same time Blocking of the circulation tax network controls. As a result, the starting position of the image unit 111 or the image reproduction memory 115 can be recorded at the recording point before the image recording of (FIG. 2). In this way, the output of further parallel plates of the capacitor circuit symbol output signals of the image display memory 115 can be adjusted to exactly. 50, the playback device 130 prevented so that the

After the image recording of the Kon image recording on the screen 130 α of the re-

With the capacitor circuit symbol, the image is recorded and the output device 130 disappears. Simultaneously begins

of the command word »CHANGE«. The processing of the turned on by the control register 137

the relevant information takes place ahn control computer 150 to work, preferably

Lich as with the two previous picture elements 55 in query mode. The control computer 150

where, however, information for special operations can also work according to the multiplex method.

rations are provided that the playback device th.

Reverse 130 for image recording of letters. In the query mode, the control computer 150

For the image recording of the command word first operated in a query loop. Herein is

"CHANGE" are within the assigned In- 60 a repeated test for a control signal, through-

formation words two sections each for the led. If the control computer 150 determines that

Letters or groups of letters WE, CH, S the control register 137 is set in the "L" state

and EL are provided, which are all for the image (this is the case when the control computer 150

recording of these letters is released), he must decide) whether the previous

contained information and herewith the playback device 65 seen the next program step through

130 taxes. _{: is} running, or whether the program of the image re-

If a change in the above output memory has now been blocked as a result of a fault,

The control computer 150 acts as a

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Signal response to the incoming »L« signal of the rungen. Continue to let on Control register 137 initially a certain regi- this way complex picture units from simpler ones Put together, move or in »L« signal, which changes it to the »L« state in a different way. For such additional is set. The shielding register 172 can, for example, contain 5 control processes, the decoder 117 additionally contains from eight register locations for one binary channel each for all associated information words Output signal consist, each output signal of the image display memory, the shielding a Importance of the binary output register 172 has a sufficient capacity for matching signals composite eight-digit binary number solution to the required number of binary signals assigned. Is z. B. which must have io from the control computer.

150 in the "L" -state set the register location the The output signal of the comparator 160 triggers two

Assigned place value 2 ⁶ , there is a pending work step at the output: On the one hand, the circulation

in the example, the screening registers considered the control network 111 (FIG. 2) via the OR gate

Binary number OLOOOOOO = 64. 119 is blocked again and the other is a

Following the setting of shielding register 15, register 174 within the input / output

172, the control computer 150 clears the control register circuit 170 (FIG. 3) in the switched-on state.

137 and returns the image display memory 115 and sets, whereby the register 174 for receiving in-

the circulation control network is provided by an "L" signal formations, which the correspondence

Free again via line d to continue the flow of control signals at inputs 160 a,

Display image display memory 115 to release a so 160 b of the comparator 160. The change

third jump command as well as an associated information of the switching status of the control register 174 in the input

to trigger the mation word. switching state is determined by the control computer 150

During the normal course of the program, the address on which the

Image display memory 115, in which a picture on-picture display memory 115 as a result of the locking of the

drawing-on the screen 130 a of the playback as circulation control network 111. has been stopped,

device 130 takes place, takes place after delivery of the first by the control computer 150 or read in.

and the second jump instruction the advancement of the is saved. The address in question is immediately

Image display memory 115 is removed from the address register 113 (Fig. 2) to the next

Picture element under the control of the last operand which is shown in FIG. 3 for better visualization

part of the relevant first or second jump jump again within the input-output

command. . ■ Circuit 170 is indicated.

"· 'The situation is different, however, if the work steps described above form

Image display memory the third jump command which together make a test process for the

ireigibt. The third jump command after receiving a control signal to change the image

the decryption in the decoder 117 over the 35 recording as well as a display for the correspondence

Line α fed to the comparator 160, whereby the mood of the control signals at the inputs of the

this is released. Simultaneously with the output of comparator 160.

of the third jump command, the binary signals are taken from the address register 113 of the information belonging to the third jump command, on which the image playback memory was stopped over a separate wire of the 4 °, is used to indicate the position of the comparator 160 for input manifold 160 b - the control of the required information word of leads. Modified at the other input multiple 160 α of the control computer 150. For example, since the control has been released, the shutdown address for the visually re-calculator 150 has been the output binary signals of the command word "CHANGE" given in the memory register 172, which consists of an "L" signal in the 45 position of the third jump command and the corresponding to the set register location of the shielding register command word for the control in the next assigned wire and from "0" signals to the memory location. The content of the wires assigned to the latter, not set register locations, is read out and passed to the control computer 150. However, since the comparator 160 is up to its wear as well as checked for zero. In the event of the writing being released by the third jump command blocked 50 image "CHANGE" if the command word was zero, the binary signals are compared differently, which is why the work steps of the control on the input multiple of the comparator 160 are only continued by the computer 150. If the mentioned then, if the binary signals of the third jump test process leads to the result zero, as is pending in the information word assigned to the command at the one-picture elements of the resistance and capacitor input multiple 160 α. If 55 gates match, then the informader gives the signals to be compared, the comparator circulation is initiated again and the overall test 160 sends an output "L" signal to line b. for the presence of a control signal and the

In the embodiment according to FIG. 2 and 3 notification of compliance repeated,
is only the interaction of the comparator If the check for the picture element or the 160 with the individual jump commands shows something different from zero. In fact, if this interaction also results in a value, the screening register is cleared for all the rest of the information contained in the display memory 115 and a new information cycle is initiated. Information words are provided here, the control signal being checked for the presence of a signal, even the entire word length of the control signal, to allow enough time to remove the. So in this way, for. B. Changes 65 probe 131 from screen 130 α to ensure the information words are displayed. Furthermore, the control register 137 is cleared and the information cycle assigned to the X and F coordinates can be initiated again.
Words of information quickly with appropriate changes

The control computer 150 switches the control signal to the next control process, in accordance with the control conditions as a result of the stopping of the image recording. In the example under consideration, this advancement consists in the processing of a subroutine corresponding to the command word "CHANGE".

The execution of the command word "CHANGE" comprises two functions, namely on the one hand the determination of the picture element to be changed, that is, the picture element to be moved, and on the other hand the determination of the new position of this picture element. As already mentioned several times, the determination or selection of the image element takes place by means of the probe 131. In the example under consideration, the probe 131 is first in the vicinity of the typeface "CHANGE" and then in the vicinity of the one between the points with the effect just described X 1, Yl and X 2, Y 2 extending resistance circuit symbol brought. If the probe 131 is in the range of the resistance symbol, the above-described test for the presence of a control signal and indication of the correspondence is carried out, with the exception that the first jump instruction is activated instead of the third jump instruction. If the result of the check is positive, the control word for stopping image recording is read out in a similar way to the control word "CHANGE". The following work steps correspond to the work steps for the image recording of the resistor and capacitor circuit symbols.

If the result of the check for the presence of a control signal is negative, the control computer 150 switches the playback device 130 to scanning mode via the line 155 (FIG. 3). The probe 131 is then brought to that point on the screen 130 α to which the starting point of the resistance circuit symbol is to be shifted, that is to say to the point X 3, Y 3 Way, a check is carried out for the presence of a control signal. If the result of this test is positive, the X and Y coordinates of the scanned point are read out from the registers 133, 135 and transferred to the control computer 150 . It should again be noted that the registers 133, 135, indicated within the input-output circuit 170 , are actually arranged within the playback device 130 (FIG. 2). The information corresponding to these coordinates is written into the image display memory 115 (FIG. 3), triggered by a signal on the line 154. The control register is then deleted and the circulation of information is initiated again. The overall image of the image recording that now appears consists of a resistor symbol that extends between points X 3, Y 3 and X 4, Y 4 and a capacitor symbol that extends between points X 1, Y1 and X 2, Y 2 .

In the device according to the invention, a change in the image recording is achieved by using the probe 131 for signaling and control. The probe is used both to introduce control programs into control computer 150 and to generate information for these control programs.

For this purpose 3 sheets of drawings

Claims (3)

Patent claims: 1. A device with an electronic image display device and circuits for generating an image recording, characterized in that for controlling the image recording, the image display device (130) is connected to a display network (110) located in the device (100) , which is used for storing separate picture elements of the Image recording corresponding signals is provided that a control computer (150) located in the device is provided to control the signals stored in the display network , that a central computer (200) is provided for the transmission of recording information signals to the control computer and the display network and that for control of the control computer with the aim of a change during the image recording, the device (100) contains a movable, light-sensitive probe (131) which responds to certain signals of a picture element recorded on the image display device. 2. Device according to claim 1, characterized in that a comparator (160) is further provided which is provided for determining a correspondence between stored signals which correspond to a separate picture element and signals which are controlled by the light-sensitive probe (131) and that, depending on the determination of a match, the control computer (150) can display the picture element to which the probe (131) responds. 3. Device according to claim 2, characterized in that to change the information stored in the display network (110) for image recording, the device (100) contains a blocking circuit (logic element 119) which is provided to block the display network and to enable the control computer.