DE2004194A1 - System for the electronic control of a knitting machine - Google Patents

Description

NEUCHATEL
DUBiED & CIE SA, (SWITZERLAND)

System for the electronic control of a knitting machine.

The invention relates to a system for the electronic control of a knitting machine, starting from a drawing to be reproduced.

In the method described in French patent 1,551,985, the The information read from the drawing is processed in an ordinator. The expelled Information is recorded on a data carrier, which the latter is used to control the needle selection devices. For knitters who do not have their own Ordinator, the method is unfavorable because it depends on data centers makes, whereby the mobility decreases and the secrecy of fashion no longer is guaranteed.

009037/1338

The main object of the invention is to provide a system for electronic Control of a knitting machine, which direct control of the electromechanical Needle selection devices permitted, provided that the drawing to be reproduced does not exceed certain limit dimensions, and which the manufacture an intermediate information carrier.

Another object of the invention is to provide an economically viable one Plant, its possibilities, performance and price at the selected limit dimensions are roughly proportional to the drawing.

According to the invention, these goals are achieved in that the system is assembled consists of a memory for storing a limited number of drawing elements in the form of coded information, of means for writing of the elements in the memory, from means for querying the memory as a function of the characteristics of the knitting machine and the drawing, from means for decoding and distribution and from converting learn to convert the decoded information into electrical signals for controlling the knitting machine, the memory and the converters are interconnected by two paths, one direct, for the direct transfer of the decoded memory content to the converters, and the other indirectly, with the help of one placed between the memory and the converters Information carrier, for the transfer of several times the decoded memory content, several subdivisions according to the drawing, this if the number of elements the drawing is larger than the capacity of the memory.

The drawing shows exemplary embodiments of the invention for a circular knitting machine shown. It shows:

Fig. 1 is a diagram of the entire system,

Fig. 2 some limit dimensions of drawings related to the plant,

3 shows a first embodiment,

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4 shows part IV of the first embodiment, FIG. 5 shows a highly schematic information carrier, 6 shows a drawing based on a highly schematic knitting machine,

7 shows part of the means for interrogating the memory in a second Embodiment,

8 shows another part of the means for interrogating the memory in the second Embodiment,

Fig. 9 shows another construction of the part shown in Fig. 7,

Fig. 10 shows another construction of the part shown in Fig. 8,

11a shows a part of the sequential circuit,

11b shows another part of the sequential step circuit,

Fig. 12 shows another part of the second embodiment.

Fig. 1 shows means for inscribing the rectangular drawing 1 (square is *

in rectangular in terms) into the data processing system 4 (abbreviated: DVA 4), for example, manual insertion of program plugs, keyboards 2 for electrical Impulse or for a punch, as well as an automatic drawing reader 3. The latter is equipped with photocells and feed mechanisms in χ and y - direction.

An extremely favorable variant of the means for writing 2 ¹ is shown at the end of the description of the second embodiment.

After processing in the DVA 4, the encoded information is sent to a Registration device5 transmitted. The latter registered on an information carrier 6, for

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Example, on a magnet or perforated tape. In the example is a photographic film 6 provided. The film 6 is developed in a developing apparatus 7 and inserted into the reading device 8 at any point in time. The latter belongs to the logic and power circuits 9 (abbreviated power level 9) together for Knitting machine 10 and it transmits the read information to the power stage 9 for the purpose of controlling the electromechanical needle selection devices 11 (abbreviated: NW 11) of the knitting machine 10. The distance between any two adjacent NW 11, expressed in the number of needles in between equal to or a multiple of the distance between the two adjacent NW 11, which are arranged at the smallest distance from one another. This last-mentioned distance becomes here called "equidistance".

The knitting machine 10 is directly controlled provided that the quantity the information extracted from the elements of drawing 1 does not exceed the capacity of the memory. In this case the processed information transmitted from the DVA 4 directly to performance level 9. It is therefore unnecessary to manufacture an information carrier 6.

The reading device 8 or the DVA 4 are read from the knitting machine 10 in the usual manner synchronized forth with the latter.

Fig. 2 shows the drawing 1 to be reproduced by knitting, which usually is drawn on cartridge paper, with each square (here called "an element of the drawing") representing a mesh. Drawing 1 contains less (Fig. 2a), the same amount (Fig. 2b) or more (Fig. 2c) information than the memory 12 take up can. Information is understood here to mean information about the constitution, for example color, of each stitch. Their geometric location within the drawing is not regarded as information because the stated information is written in a place in the memory that corresponds to the location of the mesh. For example the memory has a rectangular shape.

As memory 12, crossbar distributors, punch cards with the associated reading device, Toroidal core memory, etc. can be used.

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1. Design: "With the prescribed width of the drawing" Figures 1, 3 and 4.

With the aim of ₇ to create a cheap system, one deliberately imposes the following restrictions:

a. The capacity of the memory 12 in the direction of its width X ¹ is equal to the X equidistance.

b. The capacity of the memory is small.

c. The width X of the drawing is prescribed by the following formulas? with direct control of the knitting machine 10

η. X = X ¹ = equidistance

η = 1, 2, 3 ... (Fig. 2b: η = 1 Fig. 2a: η = 2, ...) with indirect control

X = η. X ¹ (X ¹ = equidistance) η = 2.3, ... (Fig. 2c)

d. The height Y of drawing 1 must correspond to a whole number of revolutions of the knitting machine 10 and, with direct control, must be equal to or less than the capacity of the memory in the direction of its height Y ¹ .

The memory 12 of Figures 3 and 4 consists of punched cards and their associated static reading devices. Each reading device (known and not shown) has as many buttons as perforations are possible on a card. These buttons are used continuously. The memory 12 must store at most one four-color drawing 1 of 48 mesh columns wide by 72 mesh rows high * . All drawings that exceed this limit are to be subdivided into partial drawings 13 ... 21 of 48 by 72 (64, 56 ...) stitches and you have to create a game of punched cards for each partial drawing 13 ... 21. The holes are made on any card punch.

Those provided with the information in drawing 1 or partial drawing 13 Cards are inserted into the reading devices. During processing will be the buttons from the counter 22 are cyclically energized.

The system contains various counters formed from shift registers, which on

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a certain number of positions can be indexed. Under "Counter indexed on ..." one understands here the highest number that the counter should reach; this number will be discontinued once or on a case-by-case basis. If he is in the last position (= highest Number), it starts again at "one" (or at "zero", depending on the definition). Each position has a line which is live as long as the meter is in said position. The counters are indexed in Function of the characteristics of the knitting machine 10 and the drawing 1 or the Part drawings 13 ... 21 that have just been processed are made.

The outputs of the memory 12 are connected to a distribution element 23. The figure 4 shows the counter 22, the memory 12 and details of the distributor 23. They are described in their application for direct control of the NW 11. A Pulse generator 24 transmits pulses in time with the passing of the needles in the NW 11. With each incoming pulse, the counter 22 advances one position. It is indexed to 48 positions. The number 48 corresponds to the equidistance. Between two or a few NW 11, the distance is advantageously a multiple of 48, e.g. 96, to be able to attach brushes, needle openers, etc. Each position of the Meter 22 connects the power source to two (vertical) columns of the memory, which correspond to a mesh column of drawings 1, 13 ... 21. Any pair of lines (horizontal, corresponding to a row of stitches in the drawing) is connected by two conductors to a decoder 25, the latter being the one through the information characterized color determined. Each decoder 25 has four outputs, one for each color. Each output is connected to an input of an AND gate 26. In each case nine AND gates 26 are connected to an OR gate 27; they are combined to form the switch 28, which has the power stage 9 with a NW connected is. Each AND gate 26 has a second input, which is connected to a Counter 29 is connected. The latter is indexed to nine positions. The number nine corresponds to the height of the saved drawing, counted in machine revolutions. The knitting machine works with 32 knitting systems, which are in eight groups are divided into four systems each (for the four colors). She knits per turn eight rows of stitches, for every nine turns she knits 72, that is, once the height of the saved drawing.

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Each counter 29 is connected to one position of a counter 30. The places double (triple ...) the distance between two NW 11 corresponds to one (two ...) unused position (s) of the counter 30. The latter is indexed to the number die when dividing the number of cylinder needles by the number of stitches Drawing width is found, e.g. 1872: 48 = 39 positions, with only their 32 are connected to the 32 used counters 29. The counter 30 only advances one position at a time when the counter 22 arrives at its position 48.

After 39 χ 48 = 1872 pulses from the pulse generator 24, one revolution of the machine accordingly, the counter 30 again reaches its starting position. During one first rotation, rows one to eight in drawing 1, are the Rows one to eight are knitted. Before starting to knit the counters are set 29 to its position nine, the counter 30 to its position 39 and the counter 22

its position 48. These settings reflect the well-known fact that ™

the knitting systems (as well as the NW 11) are arranged distributed around the circumference of the machine, and that they _{knit the same part (e.g., D 1} , Fig. 6b) at different times.

Every time the knitting machine has rotated a needle, transmitted the pulse generator 24 sends a pulse which the counter 22 to its next position switches, with two other columns of buttons connected to the power source will. As a function of the scanned holes, certain decoders 25 are connected to the Power source closed. Every time the counter 22 is at its last position arrives, the counter 30 is incremented by one position. The counter 29, the is connected to this new position, it also switches to the next position, "

where it e.g. makes the AND gate 26/2 conductive and interrupts 26/1. If the the first needle has run through one revolution of the machine, the counter 30 is switched from its 39th position to its first position and the counter is 29/1 switched to its second position, the decoder 25/9, which of the second Machine revolution, in other words the lines nine to sixteen of the drawing 1, is connected to the NW 11/1 via the AND gate 26/2 etc. In an analogous way, the other NW 11/2 ... 11/32 gradually become the ones mentioned above Lines switched, with decoders 25/9 - 25/16 being active. In The remaining revolutions up to and including the ninth are run through in the same way.

Ö09837 / 133Ö

During the latter, lines 65-72 are passed through decoders 25/65-25/72 and the AND gates 26/9 etc. connected to the NW 11. The counters 29 are on their ninth position and will then gradually move to their first position switched, the NW 11 switched again to lines one to eight of the drawing are.

A drawing that exceeds the limit size of 48 by 72 meshes must be subdivided into partial drawings 13 ... 21. The information contained in them is registered on a film 6 after processing. The latter is used for indirect control of the knitting machine 10. Figure 3 shows that the outputs of the switch 28 via lines 28/1 ... 28/32 with the horizontal blocking 31 and the latter via lines 31/1 ... 31/32 is connected to the registration device 5. It is made up of AND gates, which are controlled by a cyclic interchanger of the blockings 36.

In the example, the drawing to be reproduced has a width of three by 48 meshes and a height of three by 72 meshes, it is divided into the partial drawings 13 21. FIG. 5 shows a highly schematic film 6; so one has neither the transport perforations, still all slopes, still the usual synchronization slopes etc. shown. It is common practice to assign a slope to each NW 11. The field 61 of the Film 6 is reserved for the processed information of the partial drawings 13, 14, 15. At the beginning 60 of the registration of the partial drawing 13, the counters 29/2 29/32 (Fig. 4) are set to their position zero, the counter 29/1 is set to one. It it is noticeable that the horizontal blockage 31 during the first 48 pulses lets through the first 48 pieces of information from line 28/1 to line 31/1, whereupon they are registered on the first runway 60/1 in field 61/0. It will be beneficial a pulse generator 24 that is independent of the knitting machine 10 as a clock use. In this way, the knitting machine is not stopped during programming. The pulse generator 24 gives the clock for the transport of the information and the film. During the pulses 49 - 96, the corresponding field 61/1 must be the first runway remain empty, this field is the information one to 48 of the partial drawing 14 reserved. During the impulses 97 - 148, the corresponding field 61/2 must also remain empty; it is reserved for the partial drawing 15. The ones about the

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Line 21/1 incoming information is therefore from the horizontal blocking 31 blocked. The latter forwards the information from line 28/2 to line 31/2 during pulses 49-96 and they are registered on the second runway 60/2.

All other connections 28/1 - 31/1, 28/3 - 31/3, 28/32 - 31/32 are

blocked. The connection 28/3 - 31/3 is established during the pulses 97-144. During pulses 145-192, connections are 28/1 - 31/1 and 28/4 - 31/4 created and it is enrolled on slopes one and four and so on.

The horizontal blocking 31 is formed by a group of AND gates, these Gates are a function of the characteristics of the knitting machine and the one being processed Partial drawing controlled as follows. Before drawing 1 is processed, its width (counted in partial drawings, i.e. three in the example), at the beginning of the processing of a partial drawing, its Position entered within the drawing on the control panel 34 (e.g. for part drawing 13 a "one"). The control panel 33 is connected to the counter 35.

This has exits at positions 48, 96, 144 1872. These exits

are connected to a cyclic interchanger of the blockages 36. The counter 35 is indexed from the control panel 33 to the total width of the drawing 1, in Example on 3 times 48 = 144, and it counts in time with the pulses from the pulse generator 24. The blockage cyclic exchanger 36 contains a first group of AND - gates which one after the other become conductive. Your inputs are to the meter 35 and connected to the control panel 33. It also contains a second group of AND gates, the inputs of which are connected to the outputs of the former and to the control panel 34. Their outputs are with the inputs of the AND gates the horizontal block 31 connected. While the counter 30 makes its revolutions, each of which corresponds to one revolution of the machine, the counters 29 are gradually switched to one, two ..... nine and then gradually again to get to zero. When all counters have reached zero, the vertical blocking stops 37 (Fig. 3) the system.

When the partial drawing 13 has been processed and registered in fields 61/0, must If the film 6 is to be rewound to its beginning 60, the punch cards of the Partial drawing 14 is placed in the reader, the counter 29/1 must be set to "one"

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and the "two" must be entered on the control panel 34. The first Half 61/1 of the empty fields on the slopes can now be written on. She corresponds columns 49-96 of drawing 1.

Before the partial drawing 16 is written in, the film 6 has to be increased by a number Steps that correspond to the number of needles in the cylinder are rewound, a "one" must be entered again on the control panel 34, and so on the partial drawings 19, 20, 21 are inscribed, and the Switch 38 "End" entered. It is then registered in field 63, but the system is stopped each time the counter 29/1 reaches zero, which the end 64 of the film 6 corresponds. Subsequent to this stop, the film is in each case is rewound to its beginning 60 and registration continues. To this Art, the field 65 is also filled and the film 6 is ready for development.

Second embodiment: "With any dimensions of the drawing". Figures I, 7, 8, 9, 10, 11, 12.

The aim is to create a system (Fig.l), which is justifiable Process price information from a drawing 1 of any width and height can and which produces a corresponding information carrier 6. With direct Control of the knitting machine 10, the system should be able to process a drawing 1, which contains less or the same amount of information as the memory can hold up. The only, not unavoidable restriction is that between adjacent NW 11 there is equidistance or a multiple of it. The attachment readily processes the drawings shown in FIG. 2 1. A drawing 1, which contains more information than the memory can hold, is also used divided into partial drawings (Fig. 2d), with jecJooh each partial drawing the same or contains less information than the memory can hold.

The DVA 4 is equipped with a toroidal core memory and binary counters. Other Organs are usable but seem less favorable. The counters are on one certain number of positions indexable. What about "counter indexed on ..." is understood, was explained in the first exemplary embodiment.

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Every mole, when the needle cylinder 40 has rotated one needle further, the memory (59) must be interrogated in order to be able to extract the necessary information for each NW 11. For a better understanding of the following, it is assumed that the drawing 1 is written in a coordinate system. In this way, each element of the drawing 1 is assigned an abscissa x, which determines its location in the direction of the width of the drawing 1, and an ordinate y, which determines its location in the direction of the height of the drawing 1 (FIG. 6a). Each element is stored in the memory in the form of coded information, the memory location is determined by the same coordinates x, y, it has the address x, y. In order to be able to take information from the memory, its coordinates have to be calculated, this calculation is called here the calculation of the χ and the calculation of the y.

FIG. 6a shows a drawing 1 of width X to be reproduced. 6b shows schematically the needle cylinder 40 and some NW 11 (11/1 / H / 2 ... 11/38, 11/39), which are distributed equidistantly on the cylinder circumference. In reality only 32 NW 11 are in function, with some distance between them Is a multiple of the equidistance. The equidistant distribution, which thanks to the hypothesis the fictitious NW 11 is implemented, enables simplified data processing. Around the needle cylinder 40, the knitted tube 41 has been shown as it is knitted at a given point in time. Repeated on this tube the drawing 1 M- times, the reproduced drawings are with D-,

D ₀ , .... D .. ,, D .. denotes. The last drawing D .. may be incomplete 2 MI MM λ

be. At the said point in time is the beginning of 42 of the first drawing "

D. between NW 11/2 and 11/3. This beginning 42 is defined by the first mesh column. The NW 11/1 (with its knitting system, of course) must or does not have to, depending on the color of the element, knit a stitch which is on line χ in Figure 6a. In the same sense, the other NW 11/2 ... 11/39 each have _{to "knit" a certain stitch which is on the lines x o} ... x "p" or not. Every time the needle cylinder 40 has rotated by one needle in the direction of arrow 43, 39 lines x. ... X _{00 are} calculated (calculation of the x).

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The DVA 4 is first described, as it is used for direct control of the knitting machine 10. The part of the DVA 4 which carries out the calculation of the χ is shown in FIG. The pulse generator 24 transmits pulses in time with the rotation of the needle cylinder 40, these pulses cause a counter 45 to continue counting. The latter is indexed to 44, ie to the equidistance. When he leaves 44, he advances a counter 46 by one position. The latter is indexed to 39, this number is found by dividing the number of needles on the cylinder by the equidistance, e.g. 1716: 44 = 39. The two counters 45 and 46 always show the position of the beginning 42 of the first drawing D. in relation to the NW 11/1 at. You are at "one" when the beginning 42 is on NW 11/1. In Fig. 6b, the beginning 42 has first rotated from NW 11/1 to NW 11/2, ie by a distance of 44 needles, the counter 45 has switched from position one to 44 in the same cycle. When the beginning 42 arrives at the NW 11/2, the switch 45 is switched back to one and it switches the switch 46 to two. When turning further, the beginning 42 leaves the NW 11/2, the counter 45 showing the progress.

The pulses from the pulse generator 24 cause a counter 47 to increment. It is indexed to the width X, counted in meshes. He is in his position one if the beginning 42 is on NW 11/1 and it shows with everyone Momentum, which abscissa is x. the drawing 1 is on the NW 11/1.

An oscillator 50 transmits pulses of a fixed frequency, the latter being selected to be at least 39 χ 44 times higher than the highest frequency of the pulse generator 24. In the example, 2 MHz was chosen. These pulses cause a counter 51 to count up or down, depending on the command it receives from the command organ 52. The latter is a sequence step circuit of the customary type. This counter 51 is also indexed to the width X of the drawing 1. Each time after it has been set to zero by the command organ 52, the position x is determined by a transfer organ 53. from the counter 47 to the counter 51 transferred. When the next 44 pulses of the oscillator 50 are counted up (ie in the direction of the χ axis in FIG. 6a and counter to the direction of rotation of the cylinder 40 in FIG. 6b), the counter 51 determines the abscissa X ₃₉ , which is assigned to NW 11/39 . When you move forward again

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counting by 44 pulses, it determines the abscissa x _oo and so on up to x _o . The counter

Oo ο

51 then counts 44 pulses backwards (ie in the - x direction) to determine x ". The command organ 52 commands the storage of the x. ... x__ in the memory 54 and the counting direction of the counter 51. In order to be able to do this, it is controlled by the counters 55, 56 and the comparator 57. The counter 55 is indexed to 44 and the counter 56 to 39. The counter 56 is switched by one position each time the counter 55 has made a revolution. They count backwards in time with the oscillator pulses. The counter 55 gives the command to store the abscissa χ and the counter 56 determines which NW 11 this χ is assigned to. The positions of the counters 55, 56 and 45, 46 are continuously input to the comparator 57. If the positions of the counters 55, 56 correspond to those of the counters 45, 46, the comparator 57 transmits a signal to the command organ 52. The latter sets the counters ^

55, 56 to one, gives the transfer organ 53 the command to set the counter 51 to position (x ^) of the counter 47 and commands the counters 51, 56 to count in the other direction. The counter 56 thus counts 2, 3, ... and the counter 51 counts x - 1, X-2 .... 1, X, XI .... Between two pulses from the pulse generator 24, the part 39 described must χ ( x., x “... Xqn) and must store them in memory 54. A decoder 58 transforms these χ in such a way that they are adapted to the configuration of the memory 59.

The toroidal core memory 59 contains electronic writing and reading devices which are known. Its capacity is determined in the section on the manufacture of the film 6. It contains the information of the elements of drawing 1 and this in coded form. Subsequent to their calculation, the 39 decoded x, together with the 39 associated y (x. Y, x "y_ ... x ~ g y ^ ₀ ) r, are used ^to query the memory 59, ie they are the addresses for reading of the information stored. These latter are transmitted to the decoders 66 (66/1, 66/2 ...), the shape and number of which is given by the number of colors in drawing 1. The decoded information is passed to the dynamic exchanger 67. The latter allows a preselected, cyclical swapping of the colors between the

Drawings D ₁ , D ₀ ... D ... He is in the patent (Application No)

ι Z M

described.

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The decoded and possibly interchanged information is momentary stored in memory 68. The latter has a capacity of 36 bits, of which only 32 are used in the example. It has 36 electronic memories, each having an input connected to the corresponding output of decoder 69 of counter 56. Each one has a second Input, which is connected to the command organ 52. A third entrance is connected to one of the four outputs 67/5 ... 67/8 of the interchanger 67. Each electronic memory has an output which is connected to the power stage 9. The job of the first input is that Information that is available at the third input to the correct memory location to direct. The second input is used for synchronization.

The part which carries out the calculation of the y is described with the aid of FIG the DVA 4. It is recalled that:

α. the height Y of drawing 1 is entirely arbitrary. So it is not necessary that the number of lines (= number of courses) is a multiple of the number of courses is which is knitted per turn.

b. the drawing 1 is four-colored. For this reason, the knitting systems are in Divided into groups of four. Each system in a group knits a different color.

c. the machine works with 32 systems, which are divided into eight groups of four are. Each group of four knits a row of stitches, the latter corresponding to a line with ordinate y ... in drawing 1.

It is clear that the fictional NW 11 does not belong to any knitting systems, they use them do not take part in the knitting process and therefore cannot be counted in groups of four will. The real NW 11, of which at least one is a knitting system assigned are divided into groups 70 of four. In Fig. 6a one has the following distribution is planned.

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Group 70 / Ί 2 3 4th 5 6th 7th 8th OS Π / 1 11/5 11/9 (Π / 13) Π / 18 Π / 24 Π / 29 Π / 33 OS Π / 2 11/6 η / ίο Π / 14 (11/19) 11/25 Π / 30 Π / 34 OS 11/3 11/7 η / π 11/15 (Π / 20) (11/26) Π / 31 Π / 35 OS 11/4 11/8 Π / 12 11/16 Π / 21 Π / 27 η / 32 Π / 36 OS 11/17 Π / 22 11/28 (11/37) OS Π / 23 (11/38) OS (11/39)

Each group 70 "knits" a certain line y of drawing 1 during one revolution of the needle cylinder 40. During the previous revolution, it "knits" a line that was eight lines below (upper and lower edge of the _Λ

Drawing excluded). Whenever the beginning 42 of the first drawing D. arrives at the various NW 11 of a group 70, these are switched to their new line y. So you have to have this line y (y., Y _o ... y) for each group

I i. 8th

calculate of four NW 11 (calculation of the y).

The part of the DVA 4 provided for calculating the y is described with reference to FIG. 8. The counters 45, 46 described above always show the position of the beginning 42 of the first drawing D-. Every time they are in their position one, the beginning 42 is at a certain point on the machine, in the example on NW 11/1. If both are on one, they make an AND gate 71 conductive. The latter makes an AND gate 73 conductive, this allowing pulses from the oscillator 50 to pass. These pulses come to the AND gate 74, which is conductive for them because its second input 75/1 from the command organ 75 is under voltage. The latter is a sequential step-by-step circuit. The pulses come to the counter 76, which is indexed to a number which corresponds to the number of courses which the machine knits per revolution of the needle cylinder 40, in the example it is indexed to eight. The counter 76 counts in time with the incoming pulses from one to eight and back to one. When it arrives at one, it transmits a signal to the command organ 75, whereupon the latter blocks the AND gate 74. In this way, eight pulses have passed through AND gate 74. You have advanced counter 77 by eight positions. The latter is indexed to the height Y in drawing 1. This height is in

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Lines (= rows of stitches) counted. The new position of the counter 77, which is held during the entire revolution of the needle cylinder 40, is transferred to the counter 79 and further to the memory 80 with the aid of the transfer element 78. The counter 79 is also indexed to the level Y. The counter 77, counting eight positions further, has the new line y. calculated for the first stitch of the turn to be knitted, this for the NW 11/1. This first stitch is eight lines higher in drawing 1 than the last stitch of the previous turn. The NW 11/2, Π / 3, 11/4 of the first group "knit" eight lines below, the NW 11 of the second group "knit" seven lines below, etc. In this special case, where the beginning 42 is the NW 11/2 has not yet reached, it is sufficient that the counter 79 counts down one position at a time, from the new y. to find the lines y _ft ... y * (y * = y of NW 11/2, 11/3, 11/4). For this purpose, the decoder 69, which has as many outputs as there are real NW 11, transmits a signal on the output which corresponds to the position of the counter 56. The distribution of the outputs corresponds to the arrangement of the real NW 11 on the knitting machine. If, for example, the NW 11/37, 38, 39 are fictitious, the outputs 37, 38, 39 of the decoder 69, which correspond to the positions 37, 38 of the counter 56, are suppressed. The (real) outputs are led to an OR gate 81. Whenever the counter 55 is at two (position 1 can give an imperfect signal) it makes the AND gate 82 conductive, in such a way that the signal emanating from the decoder 69 reaches the counter 83. The latter is indexed to the number that corresponds to the number of real NW 11 of a group 70, in the example to four. It counts up one position for each incoming signal. When it switches from four to one (or vice versa), it transmits a signal to the command organ 75. A corresponding signal emanating from the latter switches the counter 79 down by one position, in this way it has calculated _{y o.} This new one

Position is stored in memory 80. After another four signals from the decoder 69, the counter 83 transmits a new signal which causes the counter to count back by one more position, which corresponds to y ₇ , and so on up to y **.

The calculation of the y for any position of the beginning 42 is carried out in stages, similar to the calculation of the x. So the y _{fi /} y_ ... by counting in one direction from NW 11/1 to the end of the last drawing D ..,

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and the y ", y" ... determined by counting in the other direction from NW 11/1 to the beginning of 42. The y. is saved first and then the y _fi ... y_. The NW Π of the second group 70/2 "knit" the course which is one line above that which is "knitted" by the NW 11 of the first group 70/1, ie y = y- + 1, y «= y, + 2, ...., this up to NW 11 which has just been reached or left from beginning 42. It is recalled that the comparator 57 transmits a signal every time the counters 55, 56 reach the same positions as the counters 45, 46. This signal is transmitted to the command organ 75 via the command organ 52. The latter then lets the counters 83 and 79 count in the opposite direction after it has set the first to four and the second to the position of the counter 77 . The y .. ... y are gradually fed into the memory 80 each time the counter 55 is switched to one. In this way, and every time the needle cylinder 40 has rotated one needle M pitch further, 39 addresses y .. ... y _R with 39 addresses x. ... x " _o saved together. It is clear that the four real y addresses are the same for a group, with the exception of those for the group in which the beginning 42 is located. The eight times four real y addresses and the seven fictitious y addresses are called y, ... y ™.

The described parts of the DVA 4 are used to calculate the χ and y and belong to the means for interrogating the memory 59. They contain certain counters which receive from the oscillator 50 pulses of relatively high frequency. The system should also be able to be used for the simultaneous control of several knitting machines. In this case, the frequency must be increased proportionally to the number of connected machines. However, it has been proven that when such high frequencies are used, special and complex precautions must be taken to shield the system from parasites and that the operational reliability of the meters is no longer guaranteed.

A particularly advantageous embodiment is described for the calculation of χ and y used parts. The calculations are made using arithmetic operations and for this reason said parts work with significantly lower frequencies. The parts shown in Figures 9 and 10 include

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20041

the toroidal core memory 59 with its peripheral organs. He's with a group Organs 84 connected, which decode, distribute, store and if necessary swap. Their outputs 84/1 ... 84/36 are in the case of direct control connected to the power stage 9, in the case of indirect control with the recording device 5.

The part of DVA 4 intended for calculating χ is described using the Fig. 9.

The pulse generator 24 transmits pulses either from the knitting machine 10 or from the registration device 5. These pulses switch a counter 85 on; it is indexed to the equidistance, to 44 in the example. It always shows the address χ of the information required for the NW 11 / n. The latter is located behind the beginning 42 of the first drawing D _1, seen in the direction of rotation. Every time before a group of addresses x. ... x «have to be calculated, the command organ 86 (abbreviated: KO 86) gives the command to forward the position of the counter 85 to the memory 88. For this purpose the NAND ports 87, which are connected to both, are made conductive. The memory 88 is connected to a full adder 89. The latter is a combinational circuit which automatically adds or subtracts a number stored in memory 88 with a number stored in memory 90.

For each new drawing 1, its width X is counted in elements on the BCD preselection switch 91 entered. The latter is connected to a transcoder 92 which converts the number X into binary form. If the NAND gates 93 from the KO 86 receive a command, the above number is written into the memory 90 via the lines 93/1 ... 93/8. The BCD preselection switch 94 is over the transcoder 95 and the NAND gates 96 are connected to said lines. On the first the greatest common multiple m.X of the width X is written, but which is must be less than or equal to the equidistance:

Equidistance ^. m X J?> equidistance - X m-1,2,3

For a drawing its width X ^> Equidistance is written as zero. The static circuit 97 is designed to have the equidistance in binary numbers

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transmitted. It is connected to lines 93/1 ... 93/8 via the NAND gates 98. The NAND gates 96 and 98 are also controlled by the KO 86. The latter also selects the operations to be carried out by the full adder 89, the Corresponding control commands are written in the operation memory 99. The calculation result is stored in the buffer 100. It gets from there returned to the memory 88 when the NAND gates 101 controlled by the KO 86 receive a corresponding command. The result is in the comparator 102 compared to the number X. The memory 100 is the χ with the decoder 58 tied together. From the latter, the result is transferred to the memory 59 as soon as it receives a read command from the KO 86. A second comparator 103 always compares the number written in the transcoder 92 with the number number contained in the static circuit 97. The one with the calculation of,

X ₁ ... x_ _o assigned part of DVA 4 takes the following steps (it is assumed that

I J /

that the beginning 42 of the first drawing D .. is between the NW 11/2 and 11/3 and that it is moving in the direction of NW 11/3): Calculation of χ: (All counters shown in Fig. 11a are at zero).

a. The contents of the counter 85 are transferred to the memory 88, simultaneously the memory 90 is set to zero. The KO 86 transmits impulses via lines 86/1, 86/2 and 86/3.

b. The result of the full adder 89 is transferred to the memory 100. To carry out this operation, the KO gives 86 pulses via 86/5 (+) and 86/4.

c. The stored result is compared to X and X is compared to 44. (The comparators 102, 103 are combinatorial, they compare statically without

that a command pulse would be necessary for this). If the result is J> X and X <^, 44 ™

(signaled by "one" on 102/1 and 103/1), then the number of the transcoder 95 is transferred to the memory 90. To do this, the KO 86 gives an impulse to 86/6 and 86/3. ^ f if the result <C X, then the result is

^. If the result is Z> X (signaled via 102/1), then the new result will be of the full adder 89 is transferred into the memory 100. To perform this operation, the KO 86 gives an impulse to 86/7 (-) and 86/4. e. The content of the memory 100 is transferred to the memory 88. Around To perform an operation, the KO 86 gives an impulse to 86/8 and 86/2. Simultaneously

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200A194 Ίο-

the content is compared with X If the content is ^> X (signaled via 102/1), then the X is transferred from the transcoder 92 to the memory 90 (pulse on 86/3 and 86/9). (If the content <X, then it = xj.

f. Is the content ^> X (signaled via 102/1), then the new result is from Full adder 89 transferred to memory 100, (pulse on 86/7 (-) and 86/4). (The new content = X-).

g. The content of the memory 100 is transferred to the memory 88, (pulse on 86/8 and 86/2). At the same time, the memory 59 receives a pulse over 86/10, which was calibrated by the monostable multivibrator 122 (Fig. Ha). The read cycle begins.

H . After the coded information has been read, the memory 59 transmits a pulse via 59/1 and when the first counter 123 (Fig. Ua) of the KO 86 has reached its eighth position (its last, corresponding to step h), a signal appears on the output 86/11 of the CO 86, which gives the command to store the decoded and possibly interchanged information in the group 84 of organs. At the same time, the signal of this last position appears on the output 86/12, whereby it switches on a second counter 125 (Fig. Ha) for the purpose of calculating Xj, x_p ... x ".
Calculation of X ₁ :

a ¹ . The number of the static circuit 97 is transferred to the memory 90 (pulse on 86/3 and 86/13).
b ¹ . Like h.

c ¹ . As c and additionally, if the result ^> X (signaled via 102/1) and if X ^ 44 (signaled via 103/2), then the number of the transcoder 92 is transferred to the memory 90 (pulse on 86/9 and 86/3) (If the result is <[X, then it is = x.).
d ¹ . Re

e ¹ . Like e (If the content <C X, then it = x.). _ ?. How_f.

g ¹ . Like g (the content is = x.).

h ¹ . After the coded information has been read, the memory 59 transmits a pulse via 59/1 and the second counter 125, which is in its eighth position, advances a third counter 127 (FIG. IUi) by one position. the

-21 -

009837/13 36

Calculation of x_ ₀ , x_ _ft . ». x_ is analogous to that of x. .

The part of the used to calculate the y is described with reference to FIG DVA 4.

With each pulse of the pulse generator 24, the counter 85 advances by one position. Every time it reaches "one", it transmits a pulse which increments counters 104 and 105 by one position. The first is indexed to the number of real and fictitious NW 11 (39 in the example), the second to the number of real NW 11, which work together when knitting a row (four in the example, for a four-colored knitted fabric). The said pulse is also fed to the counter 106, provided that the counter 105 arrives at "one". When it is at "one", it activates the AND gate 107. The counter 106, indexed to the height Y in drawing 1, counts forward. It shows the address y of the information that is necessary for the NW 11 / n, with the NW Π / η behind the beginning 42, seen in the direction of rotation. If said beginning 42 is between NW 11/2 and NW 11/3, the counter 106 shows y ₀ . The number y_ of the counter 106 is written into the memory 108. For each drawing 1 to be reproduced, its height Y is entered in the preselection switch 109. This number appears in binary form at the outputs 110/1, ... 110/8 of the transcoder 110 and it is written into the memory 111 when the NAND gates 112 receive a transfer command from the KO 86. The number of rows of stitches knitted per machine revolution is entered on the preselection switch 113 (eight in the example). This number appears in binary form at the outputs of the transcoder 114 and it is written into the memory 111 when the NAND- ^

Gates 115 received a corresponding command from KO 86. The full adder 116 adds or subtracts the numbers in the memories 108 and 111, depending on the command that he receives from the CO 86 via the operation memory 117. The result is transferred to memory 118. The result is transferred to the counter 106, when the NAND gates 119 receive a corresponding command from the KO 86. The number written in the counter 106 is constantly updated in the comparator 120 with the Number Y compared. The number written in the memory 118 is used by the decoder 135 is decrypted when the memory 59 is instructed to output information. The AND gate 121 then sends a pulse to the counter 106 when the

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Counter 105 arrives at its position "one", the counter 106 then slides by one Position back.

The part used to calculate the y, _ _o performs the following steps:

Computation of y. (while the other part calculates x ~):

a. The content of the counter 106 is compared with the number Y of the transcoder Π0. If the content >> Y (signal on 120/1): impulse of the KO 86 on 86/14, it sets the counter 106 to one ("clear", ie zero electrically).

b. The content of counter 106 is transferred to memory 108 (pulse on 86/15), at the same time the memory 111 is emptied (pulse on 86/16).

c. The result of the full adder 116 is stored in the memory 118 and in the counter transferred (impulse to 86/17 (+), 86/18, 86/19 and 86/20). The result = y. Computation of y. (While the other part calculates x.):

_a '. The counters 104, 105 count down by one position (the KO 86 transmits to for this purpose an impulse via 86/21). When the counter 105 comes to one, will the pulse is also passed to the counter 106, the latter also slides by one Position back.

b ¹ . The content of the counter 106 is compared with the number Y. If the content ^> Y (signal on 120/1), then Y is transferred from the transcoder 110 into the memory 111 (pulse on 86/16 and 86/22).

_c '. The content of the counter 106 is compared with Y. If the content> ■ Y (signal to 120/1), then the counter 106 is set to one ("clear") (pulse to 86/14). At the same time, the content of the counter 106 is transferred to the memory 108. (Pulse on 86/15).

d ¹ . Like c. The result = y. .

The calculation of y «_, y„ _ ... y_ is _{analogous to the calculation of y 1} (while the other part calculates the corresponding χ). After all y have been calculated, the counter 106 must be brought to the state it was in before the calculation. You have to count the number of rows of stitches per revolution, because row by row of stitches was counted during the calculation (counter 106 counted backwards). To do the above will:

a "The content of the transcoder 114 is transferred to the memory 111 (pulse on 86/23 and 86/16).

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_b ". Like c (from y).

£ ". If the contents of the counter 106 >> Y (signal on 120/1), then he will be on one set ("clear") (pulse on 86/14).

The command organ 86 (KO 86), which is shown in Figures IUi and 1U>, contains a first counter 123 with its decoder 124 for controlling steps a-h, a second counter 125 with its decoder 126 for controlling steps a ¹ - h ¹ and a third counter 127 with its decoder 128 for controlling the steps yes " - c". The binary counters 123, 125 can be decadic. The outputs one to eight are used to control the steps; output zero is not connected, its position is used to stop the counter. The counter 127 contains the same number of outputs as there are real and fictitious NW 11 plus four outputs. The former are used to distribute the decoded information to the storage locations of the group of organs 84, three of the latter are used to control steps a "- c" and the fourth is used to reset. An oscillator 133 causes the counters, one after the other, to continue counting. The KO 86 also contains AND gates (eg 134), OR gates (eg 129), a NAND gate 130, the inputs 102/1, 103/1, 103/2 and 120/1 for the signals of the comparators 102 , 103, 120 and the outputs 86/1 - 86/23 for the command pulses. The minimum frequency of the oscillator 133 is given by the following formula:
f = J ^ JL (posit, from 123 + posit, from 125. (NW _n - 1) + 4 posit, from 127) N = number of needles in the cylinder, e.g. 1716 η = number of revolutions per minute, e.g. 20 NW _n = Number of real and fictitious NW, e.g. 39

f = (9 + 9 χ 38 + 4) = 203 kHz
Hz Ov

The figure lib shows the control of the counters 123, 125 and 127. It obeys the Formulas:

L = H. CL 127.L.A B = L.A.B. 128/39. CL 123

C = B. 128/39. C. CL 125. 128/42 CL 123 = B. CL 123. CL 127

CL 125 = C. CL 125. CL 123 CL 127 = C. 128/42. CL 127. CL

-24- 009837/1336

"CL 127" denotes the state of the zero setting input of the counter 127 and so on. This control is connected to the pulse generator 24. It contains NAND gates (e.g. 13I) ₇ inverters (e.g. 132), the inputs H, A ₇ 128/39 ₇ 128/42 and the outputs L ₇ CL 123 ₇ B ₇ CL 125, C ₇ CL 127.

FIG. 12 shows the memory 59 _7, the decoders 58 ₇ 135, the memories 54 ₇ 80 of the addresses x. ... x ^ _o , y. .... y «and the peripheral organs. The memories 54 ₇ 80 are only provided for holding the last calculated χ and y, this during a period of time that is long enough to write or read the information in the memory 59. The memory 59 is a toroidal core memory. In the example it is made up of eighteen layers one on top of the other, each layer containing 64 χ 64 rings (each ring results in a "bit"). Each layer contains 64 inputs 58/1 ... 58/64 and an equal number of inputs 135/1 ... 135/64 and a specific bit is reached through inputs 58 / n ₇ 135 / m. The superimposed inputs of the eighteen layers are interconnected so that eighteen superimposed bits, which form a "word" (byte), are reached via the two inputs 58 / n and 135 / m.

The usual drawings 1 are three or four colors. Around a stitch, i.e. a Element of drawing 1 to designate its color must be coded by two pieces of information (two bits), e.g.

first bit second bit

white O 0

blue 0 1

red 1 0

black 1 1

Because you need two bits, one pair per element, you only have nine pairs Layers are available for saving the drawing 1, the latter can contain a maximum of 64 χ 64 χ 9 = 36 864 elements (meshes).

A new drawing 1 is written into the memory 59 as follows. Each element is analyzed and, depending on its color, a signal is transmitted to the encoder 136 via one of the four lines 2/1 ... 2/4. The latter changes

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009837/1336

converts the signal into coded information of two bits. The latter are transferred to a distributor 137. At the same time and synchronously, the parts provided for calculating χ and y have calculated the corresponding addresses x, y. This is achieved in that the means for writing 2, 2 * , 3 let the counter 51 count in time with the reading in of the elements of the drawing 1 lying on a horizontal line and let the counter 79 count on by one position per line. The decoders 58, 135 determine the respective inputs 58 / n and 135 / m which correspond to a fraction of the two addresses χ and y. The corresponding word (= nine pairs of bits) is transferred from the memory 59 to the distributor 137. The memories 54, 80 transmit the remaining fraction of the two addresses χ and y to a device for determining the locations of said bits within the word; this organ 138 thus determines in which pair of layers these bits must be stored. One of the nine outputs 138/1 ... 138/9 transmits the address of the pair of layers to the distributor 137. The latter contains nine pairs of electronic memories, each pair is connected to a pair of layers. Before each transfer of a word from memory 59, all nine pairs are brought into their 0, 0 state. After the transfer they are in the state of the transmitted word. The pair determined by the organ 138 for determining the location is brought to 0, 0 and the coded information which comes from the encoder 136 is stored in this pair. The new word is stored in the nine pairs of rings of the memory 59, which are located at the intersection of the inputs 58 / n and 135 / m. The delete and transfer commands are issued by the command organ 52 (86).

The reading of the memory 59 in direct control of the knitting machine is described below. The drawing 1 to be reproduced by knitting is stored in the memory in the form of coded information. Every time a needle reaches NW 11/1 , 32 (pair) pieces of information for the 32 real NW Π have to be read from memory 59. For this purpose, 39 addresses xy, x "y" .... x "Q y ~ _{0 are} calculated and gradually decoded by the decoders 58, 135 . For each first fraction of an address xy, a word is stored and transferred to the distributor 137. Depending on the details of the second fraction of the address xy, the distributor 137, controlled by the organ 138, selects the pair of bits associated with this address xy. The two bits are transmitted via lines 137/1 and

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200A19A

137/2 passed to decoder 66 (Fig. 7).

A two-tone drawing 1 only needs one bit per element, so one is double as large a number of elements can be stored as with a three- or four-color Drawing. Similarly, a five- six- ... colored drawing requires 1 three (four ...) bits per element and you can only get a proportionally smaller number Save items.

With the aim of streamlining the writing of information, it is advantageous to to combine the keyboard 2 (Fig. 1) with a card or tape punch reader 2a. In this way, the memory 59 can be filled much more quickly. These means for registered writing, such as the automatic drawing reader 3, require a copy of the artist's drawing drawn on cartridge paper. These Copying work is tedious and expensive, especially when the copy has been made for the automatic drawing reader 3. Each square must then be carefully and filled out evenly to reduce the number of read errors. In addition, the means described do not allow the surgeon to work or to check the automatic system for correctness immediately.

The following describes means for registered mail 2 ¹ (FIG. 1) which avoid these deficiencies and are therefore even more advantageous. The artist's drawing 1, which was advantageously drawn with transparent colors on a transparent carrier, is read by the surgeon and the information read is transmitted to the DVA 4 in the form of electrical pulses, this with the help of the means for writing 2 '; it is advantageous to obtain said information with the aid of the automatic drawing reader 3. The means for writing 2 ¹ consist of a command desk 139 which contains the image memory 140 with its peripheral organs (known and not shown). It contains a first keyboard 141 (with its electronics) which allows any bit or pair of bits of the image memory 140 to be reached, and a second keyboard 142 (with its electronics) which allows said bit (s) to be assigned change. The command desk 139 contains further keyboards 143 (with their electronics), via which the mass of the drawing 1 is written, which transfers the data to the DVA 4 and / or

009837/1336

in the registration device 145 and execute which control the registration or reading of the tape 144, the latter with the aid of the reader 146, etc. The image memory 140 controls a color picture tube (display unit) 47, the screen 148 of which is advantageously also included covered with a transparent cartridge paper or provided with a corresponding print. It is also advantageous to be able to change the colors projected on the screen 148; the buttons 149 (with their mixer circuits) are provided for this purpose. In addition, a mobile spot, which shows the position written on the keyboard 141 on the screen, and a transport trolley 150 are provided. The latter allows the means for registered 2 ¹ to be transported to the DVA 4 of any knitting machine 10.

A method of reading and writing is described: Drawing 1 of A

Artist is placed under the clear cartridge paper. Each square of the latter delimits an element of drawing 1. The operator writes the dimensions of the drawing 1 in the keyboard 143 and reads one element after the other and at the same time writes them in the keyboard 142. Any information written, ie stored, appears on the screen 148. When the entire drawing 1 has been read, it is advantageous to transfer the memory contents to a perforated tape 144. At any desired late point in time, the means for writing 2 ^{1 are moved} to a knitting machine 10 and the information is transferred from the perforated belt 144 to the image memory 140 and then to the DVA 4.

Further advantages of the means for writing 2 ¹ are, for example, that the Stricker ä reasonable

can find nice color combinations without costly attempts on the knitting machine, and that a saved drawing can be modified.

After making a few changes, the DVA 4 can be used for simultaneous, direct Control of several knitting machines 10 can be used, these reproducing the same or different drawings 1, in the latter case the sum may be used all information of the various drawings 1 do not exceed the capacity of the memory 59. The number of simultaneously controlled knitting machines 10 is limited by the reading speed of the memory 59. The amendments will

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explained on the basis of Figures 7 and 8:

α. Each knitting machine 10 must have its own set of counters 45, 46, its own memories 68, its own counters 47, 76, 77 and 83 (for knitting various drawings) and its own gates OR 81 - AND 82.

b. The pulse frequency of the oscillator 50 must be proportional to the number at the same time controlled machines are increased.

c. It is necessary to provide a distributor which stores the data read from the memory 59 Information gradually distributed to the various memories 68. Similar changes can be made to the variant according to FIGS. 9, 10, 11a, b.

A drawing 1 (FIG. 2d) the number of information items is greater than the capacity of the memory 59 is divided into bands 151. Their width is equal to the width X of drawing 1 and their height corresponds at least to the height knitted during one (two in the example) machine revolution (in the example two times eight rows of stitches for a four-colored knitted fabric). To produce the film 6, the following procedure can be used, for example: the information from the tapes 151/1 and 151/2 is transferred to the memory 59, then the processed information from the tape 151/1 and part of the tape 151/2 is recorded on the Film 6; then the information of the tape 151/3 is transferred to the toroidal cores, which carried the information of the tape 151/1, etc. It goes without saying that the outputs 68/1 ... 68/32 (... 68/36), Fig 7 are connected to the recording device 5, and that a pulse generator analogous to the pulse generator 24 synchronizes the systems and devices.

An installation according to FIG. 1 can also be used to control one or more flat knitting machines be used. It is obvious that the details of the DVA 4 deviate from the systems described above because of the specific circumstances of the flat knitting machine.

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Claims (26)

Claims K / System for the electronic control of a knitting machine, based on a drawing to be reproduced, characterized in that it is composed of a memory (12, 59) for storing a limited number of drawing elements in the form of coded information, of means for writing (2 , 2 ¹ , 3) of the elements in the memory, of means for interrogating the memory as a function of the characteristics of the knitting machine and the drawing (1), of means for decoding and distribution and of converters (9) for converting the decoded information into electrical Signals for the control of the knitting machine, the memory and the converter are connected to each other via two paths, one directly for the direct transfer of the decoded memory content to the conversion I em, and the other indirectly, with the help of an information carrier arranged between the memory and the converter ( 6), for the transfer of several times the decoded memory content, several Un divisions (13, 14, "." 151/1, 151/2, ...) according to the drawing, this when the number of elements in the drawing is greater than the capacity of the memory. 2. Installation according to claim 1, characterized in that a keyboard (2) is provided is for writing the coded information into the memory. 3. Plant according to claims 1 and 2, characterized in that the keyboard is connected to a punch - reader (2a) for punched cards or perforated tapes, with whose help the memory can be filled quickly, 4. Installation according to claim 1, characterized in that an automatic drawing reader (3) is provided, which is equipped with photocells and automatic feed mechanisms for the coordinates χ and y. 5. Installation according to claim 1, characterized in that the means for writing (2 ¹ ) the elements of the drawing in the memory from an image memory -30- 009837/1336 (140), from organs for changing its content and from organs (143) for transmission this content are put together in the memory (59), furthermore a color picture tube (147) ("display unit") is connected to the picture memory Present content graphically. 6. Plant according to claim 5, characterized in that the organs for change of the contents of the image memory are composed of a first keyboard (141) with its circuits, which enables access to a specific bit (bits) and a second keyboard (142) with its circuits showing the change of said bit (s). 7. Plant according to claims 1 and 6, characterized in that the organs to change the content of the image memory are composed of an automatic Drawing reader (3), from a first keyboard (141) with its circuits, which allows access to a certain bit (bits) and from a second Keyboard (142) with its circuits that allow the change of said bit (s) enables. 8. Plant according to claim 5, characterized in that the screen (148) of the Color picture tube (147) is provided with a network of intersecting lines. 9. Plant according to claims 5 and 8, characterized in that the Drawing (1) of the artist is drawn with transparent colors on a transparent support, and that said drawing is attached to the screen. 10. Plant according to claim 5, characterized in that buttons (149) with their Circuits are provided for mixing the colors. 11. Plant according to claim 5, characterized in that devices for registration (145) and for reading (146) with their information carrier (144) are provided, these Devices work together with the image memory. 12. Plant according to claim 1, characterized in that the means for interrogating - 31 - 009837/1336 of the memory (59) are composed of a group of counters (45, 46, 55, 56) which are indexed according to the characteristics of the knitting machine, from a group of devices for calculating the addresses in the direction of the width of the drawing (calculation of the x) (47, 51 - 54, 57, 58), where two counters (47, 51) are indexed to the width (X) of the drawing and from a group of organs for calculating the addresses in the direction of the height of the drawing ( Calculation of y) (69, 71, 73-84), two counters {77, 79) being indexed to the height (Y) of the drawing, the pulses required to operate the counters are provided by an oscillator (50) and by one Pulse generator (24) generated, the latter is controlled by the knitting machine. 13. System according to claim 12, characterized in that the counters are binary counters M with the exception of the counters 47, 51, 77, 79, which are decimal-coded binary counters (BCD). 14. Installation according to claim 1, characterized in that the means for interrogating of the memory (59) are composed of organs in which numbers are written are characteristic of the knitting machine and of the drawing and are made up of organs that carry out arithmetic operations for the purpose of calculation of the addresses (X ₁ , y.), whereby the organs of a subsequent step l .. »η ι ... n circuit can be controlled. 15. Plant according to claim 1, characterized in that the means for distributing the deco decode the like and read from the memory (59) the encoded information is composed of decoding! (66), which decode the encoded information, from a memory (68) which contains the same number of electronic storage locations as the knitting machine has needle selection devices (11) and from a decoder (69) which controls the distribution of the decoded information to said storage locations. 16. Plant according to claims 1 and 15, characterized in that the electronic Storage locations of the memory (68) via the power stage (9) with the Needle selection devices (11) of the knitting machine are connected. -32- ' 009837/1336 17. Plant according to claims 1 and 15, characterized in that the electronic storage locations of the memory (68) with the recording device (5) are connected. 18. Plant for the direct control of several knitting machines according to claims 1 and 12, 13, 15, 16, characterized in that each knitting machine (10) has its own group of counters (45, 46, 47, 76, 77, 83) and a own memory (68) are assigned and in that the oscillator (50) transmits pulses as much times higher frequency as the number of simultaneously controlled knitting machines is greater and in that distributing devices are provided which the information read from the memory (59) and distribute them to the various memories (68). 19. Plant according to claim 1, characterized in that the distance between any two adjacent needle dialing devices (11) in the number of intermediate ones In terms of needles, equal to or a multiple of the distance (called equidistance) between the two, the smallest distance from each other arranged, adjacent needle selection devices (11). 20. Plant according to claims 1 and 17, characterized in that the Registration device (5) contains a pulse generator. 21. Plant according to claims 1 and 19, characterized in that the The capacity of the memory (12) corresponds to the equidistance in the direction of its width, in such a way that the memory can only store one drawing whose number of elements, counted in the direction of width, is equal to the equidistance. 22. Plant according to claims 1 and 21, characterized in that the Means for interrogating the memory (12) are composed of a counter (22) which is indexed to the equidistance and of counters (29, 30) which are indexed according to the characteristics of the knitting machine and which participate in the control of the AND gates (26) which are used to operate the counters necessary pulses are generated by a pulse generator (24). -33- 009837/1336 200419A 23. Plant according to claims 1 and 22, characterized in that the Counters are writing registers. 24. Plant according to claims 1 and 22, characterized in that the Means for decoding and distributing those read from the memory (12) coded information is composed of decoding! (25), from wiring, which correspond to the characteristics of the knitting machine and the drawing, from AND gates (26) and from OR gates (27). 25. Plant according to claims 1 and 24, characterized in that the OR gates (27) via the power stage (9) with the needle selection devices (11) are connected. 26. Plant according to claims 1 and 24, characterized in that the OR gates (27) with the recorder (5) via a horizontal block (31) are connected and in that this latter of a group of organs (33-37) as a function of the characteristics of the knitting machine and the Partial drawing (13 or 14 or ... 21) is controlled. 009837 / 1-336