Method and apparatus of controlling an embroidery machine

Transcription

Patentamt
J E u r o p European
a i s c h e Patent
s
Office
Publication number:
PATENT
(45) Date of publication of patent specification: 19.09.90
1 6 3
B1
Office europeen des brevets
EUROPEAN
0 221
SPECIFICATION
int. ci.5: D 05 C 5/04,
D 05 B 2 1 / 0 0
® Application number: 86903118.7
(22) Date of filing: 18.04.86
(§) International application number:
PCT/AU86/00104
(§) International publication number:
WO 86/06423 06.1 1.86 Gazette 86/24
Method and apparatus of controlling an embroidery machine.
Priority: 19.04.85 AU 206/85
Date of publication of application:
13.05.87 Bulletin 87/20
Publication of the grant of the patent:
19.09.90 Bulletin 90/38
Designated Contracting States:
ATCHDEFRLI
CO
References cited:
EP-A- 147 087
US-A-4116144
US-A-4122 786
US-A-4258 636
US-A-4413 574
Proprietor: WILCOM PROPRIETARY LIMITED
126 Cleveland Street
Chippendale, NSW 2008 (AU)
Inventor: PONGRASS, Robert, Gabor
Inventor: WILSON, William, Brian
Representative: Boydell, John Christopher et al
Stevens, Hewlett & Perkins 5 Quality Court
Chancery Lane
London, WC2A1 HZ (GB)
CO
to
CM
CM
O
a.
LJJ
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may
give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall
be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been
paid. (Art. 99(1 ) European patent convention).
Courier Press, Leamington Spa, England.
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Description
Technical field
This invention relates to a method and
apparatus for controlling an automatic embroidery machine or the like.
Background art
Embroidery machines have been used for many
years. These machines have generally been controlled by a program punched into a paper tape
although recently electronic storage means have
been deployed. The program on the paper tape
etc. which control the embroidery machines are
generally in one of two formats, either a tape data
format or a condensed data format. Both of these
formats control the position of the work table of
the machine plus other special functions such as
change thread, start, stop etc.
A so-called tape data format contains the step
by step commands which the machine executes,
for example move x axis four steps move y axis
minus two steps stitch etc, (see US —A—
4258636). It is the lowest level of information on
which a machine can work and is often referred to
as low level language as each step to be performed by the machine is encoded on the tape.
A so-called condensed data format is a higher
level language of pattern storage. This information contains the necessary parameters from
which designs can be generated. This format
does not tell the machine how far to move the
work table etc. but requires the machine or design
computer to generate the actual table movement
sequence (incremental steps).
Each embroidery design requires a different
program. The programs are generated on a
design embroidery machine, a design computer
or the like, often called "punching machines"
where the designer programs the design machine
to generate the desired design. The program thus
produced may be stored in, for example, the form
of a punched paper tape or the like. To redesign
the embroidery design, for example, to vary the
density of the stitches or the size of the design or
even the orientation of the design, requires
reprograming and producing a new paper tape
program for the production machines.
Designs which are generated in a condensed
data format can be varied in size and stitch
density since the information required for generation of incremental steps is provided in the nature
of the condensed data format language, however
this type of format is generally provided only on
the so called "punching machines" which are
used for creating the original designs and is not
normally used on production machines.
A tape data format is normally used to drive
production machines and generally cannot be
varied. However, in recent times, these tape
programs are able to be manipulated to provide
scaling effects. That is, the size of a given design
may be increased or decreased but this scaling is
limited in its effect. The scaling is achieved by
varying the actual stitch length, that is the incre-
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mental value between co-ordinate points is varied
thus providing longer stitches or shorter stitches
which in turn increase or reduce the size of the
design. Even though the design may be scaled the
actual number of stitches in the design stays the
same. This has the disadvantage that when
increasing the size of the design the density of the
stitches may not be sufficient to provide adequate
coverage by the fill stitches and satin stitches
leaving areas where the base material shows
through. Also, when decreasing the size of the
design the stitches may tend to bunch up causing
areas of unsatisfactory quality.
This problem has been overcome by using the
condensed data format in which the density is
determined by the machine when calculating the
required stitch depths, but no machine nor device
has previously been able to vary the actual stitch
density of a design recorded in a tape data format.
Disclosure of the invention
Thus, it is an object of this invention to provide
a method and an apparatus for varying the stitch
densities of tape data format programs so as to
overcome the aforementioned problems.
Accordingly, in one aspect the present invention consists in a method of producing a modified
embroidery pattern for an embroidery machine
by means of a stitch processor, including the
steps of (a) transferring from an input reader
device to the stitch processor a stitch-by-stitch
definition of an embroidery pattern in the tape
data format incorporating fixed, step-by-step
successive stitch commands, each command
defining an individual stitch movement to form an
individual stitch, successive commands defining
successive individual stitch movements to form
sequences of individual stitches which together
constitute the embroidery pattern; (b) said stitch
processor analysing each sequence of individual
stitches throughout the embroidery pattern, and
determining the stitch types, the area, the stitch
lengths, and the stitch spacings for each
sequence; (c) manually inputting to the stitch
processor via an input device any required variations in the design represented by the pattern;
and then (d) said stitch processor generating new
stitch commands to modify the pattern and
ensure that the stitch density in each sequence is
within specified limits.
Preferably, the method further includes the step
of communicating the modified stitch commands
to the automatic embroidery machine to produce
a desired modified design.
Preferably, the low level language program is
read from a punch paper tape or other equivalent
electronic device.
Preferably, the predetermined parameters
include modifying the stitch commands to vary
the size of the design while maintaining the stitch
density.
the stitch density independent of any scaling
modification.
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the stitch density of each different stitch type
independently.
the orientation of the design.
include modifying the stitch commands to produce a mirror image of the original design.
include modifying the stitch commands to
maintain the length of the stitches less than a
maximum length.
include modifying the stitch commands to
maintain the length of each stitch type less
than a respective maximum length.
Preferably, the modified stitch commands are
communicated
directly to the automatic
embroidery machine.
Preferably, the stitch commands are modified
to provide stitch spacings as a function of
stitch length of certain stitch types.
Preferably, the low level language program is
interpreted to recognise irregularities and
inconsistencies in certain stitch types and the
stitch commands are modified to smooth out
the irregularities or inconsistencies.
In another aspect the present invention consists in a stitch processor comprising:
(a) an input reader device for reading from a
storage medium data relating to an embroidery
pattern;
(b) a stitch processor operable to receive
from said input reader device a stitch-by-stitch
definition of an embroidery pattern in tape data
format incorporating fixed, step-by-step successive stitch commands, each command defining
an individual stitch movement to form an
individual stitch, successive commands defining
succesive individual stitch movements to form
constitute the embroidery pattern; said stitch
processor including means for analysing each
sequence of individual stitches throughout the
embroidery pattern, and determining the stitch
types, the area, the stitch lengths, and the
stitch spacings for each sequence;
(c) an input device by means of which may
be inputted to the stitch processor required
variations in the design represented by the
pattern;
and wherein said stitch processor further
includes
(d) generating
means for automatically
generating new stitch commands to modify the
pattern and ensure that the stitch density in
each sequence is within specified limits.
Preferably, the device can modify the stitch
commands provided by the input device in
accordance with predetermined parameters to
produce modified stitch commands for controlling the embroidery machine.
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to vary any combinations of the following
features of the design:
size, indepenent of stitch density;
stitch density, in all or any combination of
each different stitch type;
orientation of the design;
maximum fill stitch length;
maximum running stitch length; and
maximum jump and satin stitch length.
to produce a mirror image of the original
design.
to produce stitch spacings as a function of
stitch length for certain stitch types.
to smooth out irregularities and inconsistencies
in the original low level language program.
is
machine
Preferably, the embroidery
replaced by a plotter to produce a pictorial
representation of the modified design.
is
machine
Preferably, the embroidery
replaced by an output device for recording the
modified stitch commands.
Brief description of the drawings
Notwithstanding any other forms that may
fall within its scope, one preferred embodiment
of the invention will now be described by way
of example only with reference to the accompanying drawings in which.
Figure 1 is a black box diagram of the preferred embodiment showing connections to
program input devices and an embroidery
machine;
Figure 2 is a block diagrm of the arrangement in Figure 1; and
Figure 3 is a black box diagram of another
embodiment of the invention connected in a
stand alone arrangement.
Modes for carrying out the invention
From Figure 1 it can be seen that the preferred embodiment of the invention, known as
a Stitch Processor (S/P), comprises two physical
units, the S/P board (1) containing the various
electronic devices for processing the stitch program and a S/P keyboard/display (2) interconnected by cable (6). Of course, these could
be constructed as a single physical unit if so
desired. The S/P board (1) is connected to the
processor board of the embroidery machine (3)
via cable (7) for parallel transmission of information. The S/P board (1) is connected to a
device (4) for inputting the desired program via
cable (8). In this case the device is a (8)
channel paper tape reader, but could be other
devices such as a floppy disk reader or equivalent electronic or magnetic information transfer
device such as magnetic tape or ROM device.
Thus it can be seen that the S/P is inserted
between the reader (4) and the embroidery
machine (3). In operation the S/P appears to
the reader (4) as the embroidery machine and
appears to the embroidery machine (3) as the
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reader. The S/P board (1) may also or alternatively
be connected to a computer system (5) via cable (9)
for direct production of computer generated
designs, the computer system (5) functioning as
the program input device.
The S/P keyboard/display (2) is provided to
enable an operator to key in parameters for the
required variations to the design. These parameters are transmitted to the stitch processor (S/P)
board (1 ) which uses them in its built-in algorithms
to automatically produce the modified design.
Default values result in no modification to the
design. Modifications to the design include:1. variation in size (scaling);
2. variation in stitch density in all or any
combination of the three different basic stitch
types used, i.e. satin stitch, running stitch and fill
stitch (also known as ceeding stitch or geflect
stitch), although other stitch types may also be
varied;
3. variation in the orientation of the design (i.e.
the design may be rotated);
4. the design may be reversed to produce a
mirror image of the original design;
5. variation in fill stitch length;
6. variation in running stitch length; and
7. variation in the maximum stitch length (as is
used in satin stitch and jump commands).
Any combination of the above modifications
may be made on the one design.
The scaling process varies the size of the design
while maintaining the original density of the
design unless the operator has also requested that
it (the density) also bealtlered by some parameter
value. This allows enlargement of the design
without the previous disadvantage of gaps
appearing in the design or a reduction in the size of
the design without bunching of the stitches.
Figure 2 shows the block diagram of the
apparatus wherein it can be seen that the stitch
processor board (1) comprises: a central processing unit (11), having a 8086 chip (12), a 8087
chip (13), a timer (14) and an interrupt controller
(15), all connected to a common data/address bus
(10)alsoconnectedtothebusare: anEPROM (16),
containing the S/P progrom memory; RAM (1 7) for
temporary storage of data; serial interface (UART)
(18), for serial communication with the S/P keyboard/display (2) and the computer system (5);
parallel I/O interface (19), for communication with
the embroidery machine (3) and program reader
(4); address latches (20); and data latches (21).
The S/P board (1) receives instructions from the
operator via the keyboard (2), about which stitch
types and what parameters to change in the
design. The S/P board uses these parameters in its
algorithms to automatically calculate the desired
variations. The display provides the operator with
a visual verification of the inputted information
and a reminder of the next step to be performed by
the operator. Once a design has been started the
display displays the progress of the design
including the number of steps of the program read
and the number of steps executed by the machine.
The S/P board receives the data supplied by the
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reader 4 or computer system (5), interprets the
type of stitch being ordered by the program and
the area involved. It then calculates the new steps
required to modify the design as required and
outputs the new steps to the embroidery
machine's processor for controlling the machine
to produce the required modified design. The
information supplied to the S/P board via the
reader (4) or computer system (5) is in the form of
low level language (i.e. tape data format).
The stitch processor can also be adapted to
modify a stitch spacing as a function of stitch
length. This is desirable as the longer a stitch is the
closer the stitches should be to maintain the visual
density of the stitch pattern. This can be accomplished at the same time as the stitch processor is
determining the stitch type, the area of the pattern
and the stitch density of the modified design.
At the same time the stitch processor can be
adapted to detect irregularities in the stitch pattern
and to vary the modified design to smooth out the
irregularities and inconsistencies to produce a
neater design. Sometimes, especially in old programs, small irregularites were allowed to remain
in the stitch program to avoid the expense of
redesigning the entire program.
The S/P may also be used to produce modified
programs which are recorded for future use or
which may be directly outputted to a plotter or the
like to produce a pictorial representation of the
modified design.
This is readily accomplished by the connnections shown in Figure 3, wherein the S/P keyboard/
display are connected to an input device and to an
output device. The in put device may be a ny type of
program input device including, but not limited to,
any of the following:
paper tape reader, floppy disk reader, magnetic
tape or cassette reader, bubble memory reader,
EPROM or ROM reader, design computer system,
etc.
The output device may be any type of output
device including, but not limited, to any of the
following:
paper tape puncher, floppy disk recorder, magnetic tape recorder, PROM programmer, graphics
display system, plotter etc.
Although the preferred embodiment has been
described as a separate processor device, the
invention may well be incorporated into an automatic embroidery machine as an integral part of
the machine's processor.
Claims
1. A method of producing a modified embroidery pattern for an embroidery machine (3) by
means of a stitch processor (1 ), including the steps
of:
(a) transferring from an input reader device (4, 5)
to the stitch processor (1) a stitch-by-stitch definition of an embroidery pattern in tape data format
incorporating fixed, step-by-step successive stitch
commands, each command defining an individual
stitch movement to form an individual stitch,
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successive commands defining successive individual stitch movements to form sequences of
individual stitches which together constitute the
embroidery pattern;
(b) said stitch processor (1) analysing each
types, the area, the stitch lengths, and the stitch
spacings for each sequence;
(c) manually inputting to the stitch processor (1 )
via an input device (2) any required variations in
the design represented by the pattern; and then
(d) said stitch processor (1) generating new
stitch commands to modify the pattern and
ensure that the stitch density in each sequence is
within specified limits.
2. A method as claimed in Claim 1, further
comprising the step of communicating the new
stitch commands to an automatic embroidery
production machine operative to produce a modified embroidery pattern.
3. A method as claimed in either one of Claims 1
or 2, wherein the embroidery pattern is stored as
a low level language program on one of the
devices contained in the following group;
punched per tape, floppy disk, magnetic tape,
ROM, PROM, EPROM, buble memory and a
design computer system.
4. A method as claimed in Claim 1, wherein in
step (c) the variations include varying the size of
the embroidery pattern, and in step (d) the stitch
processor maintains the original stitch density of
each sequence.
step (d) the stitch processor varies the stitch
density independently of any scaling variation.
step (d) the stitch processor varies the stitch
density of each stitch type independently.
step (c) the variations include varying the orientation of the pattern.
step (c) the variations include producing a mirror
image of the original pattern.
step (d) the stitch processor maintains the length
of the individual stitches less than a maximum
length.
step (d) the stitch processor maintains the length
of each stitch type less than a respective maximum length.
step (d) the stitch processor provides stitch spacings as a function of stitch length of certain stitch
types.
12. A method as claimed in Claim, 1 wherein
step (b) includes detecting irregularities and
inconsistencies in certain stitch types, and
wherein in step (d) the stitch processor smooths
out the irregularities and inconsistencies.
13. Stitch processor equipment to produce a
modified embroidery pattern for an embroidery
machine (3) said equipment comprising:
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8
(a) an input reader device (4, 5) for reading from
a storage medium data relating to an embroidery
pattern;
(b) a stitch processor (1) operable to receive
from said input reader device a stitch-by-stitch
definition of an embroidery pattern in tape data
format incorporating fixed, step-by-step successive stitch commands, each command defining
an individual stitch movement to form an individual stitch, successive commands defining sucessive individual stitch movements to form
constitute the embroidery pattern; said stitch
processor including means for analysing each
types, the area, the stitch lengths, and the stitch
spacings for each sequence;
(c) an input device (2) by mans of which may be
inputted to the stitch processor (1) required variations in the design represented by the pattern;
and wherein said stitch processor (1) further
includes
(d) generating means for automatically generating new stitch commands to modify the pattern
and ensure that the stitch density in each
sequence is within specified limits.
14. Stitch processor equipment as claimed in
Claim 13, and further comprising means (7) for
communicating the modified stitch commands to
an automatic embroidery production machine
operative to produce an embroidery pattern.
15. Stitch processor as claimed in Claim 13,
wherein the generating means is operative to
ensure that the stitches in each sequence comply
with one or any combination of the following:
the stitch density remains within specified
limits independently of changes in the size, or
orientation; or reflections of the pattern;
the stitch density, in all or any combination of
each stitch type remains within specified limits
independently of changes in the size, or orientation; or reflections of the pattern;
a maximum fill stitch length;
a maximum running stitch length; and
a maximum jump and satin stitch length.
16. Stitch processor equipment as claimed in
Claim 13, wherein the generating means is operative to produce stitch spacings as a function of
stitch lengths for certain stitch types.
17. A stitch processor as claimed in Claim 13,
wherein the generating means is operative to
smooth out irregularities and inconsistencies in
the stitch density of sequences of a pre-recorded
embroidery pattern.
and further comprising means for plotting a
pictorial representation of the modified pattern.
and further comprising means for recording the
new stitch commands.
Patentanspruche
65
1. Verfahren zur Herstellung eines modifizierten
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Stickmusters fiir eine Stickmaschine (3) mittels
eines Stichprozessors (1), gekennzeichnet, durch
folgende Schritte:
(a) Obertragung einer Stich-fiir-Stich-Definition
eines Stickmusters aus einer eingangsseitigen
Lesevorrichtung (4, 5) zum Stichprozessor (1) in
Banddatenformat, das festgelegt, schrittweise
aufeinanderfolgende Stichbefehle umfasst, jeder
Befehl eine individuelle Stichbewegung zur Bildung eines einzelnen Stiches bestimmt, aufeinanderfolgende Befehle aufeinanderfolgende einzelne Stichbewegungen zur Bildung von Folgen
einzelner Stiche bestimmen, die zusammen das
Stickmuster bilden;
(b) der Stichprozessor (1) jede Folge einzelner
Stiche durch das ganze Stickmuster analysiert
und die Sticharten, die Fla'che, die Stichlangen
und die Stichabstande fur jede Folge bestimmt;
(c) manuelle Eingabe in den Stichprozessor (1)
mittels einer Eingabevorrichtung (2) jeglicher
erforderlicher Anderungen in dem vom Muster
dargestellten Design; und anschliessend
(d) der Stichprozessor (1) neue Stichbefehle
erzeugt, um das Muster zu modifizieren und
sicherzustellen, dass die Stichdichte in jeder
Folge innerhalb spezifizierter Grenzwerte bleibt.
2. Verfahren nach Anspruch 1, gekennzeichnet
durch den weiteren Schritt der Obertragung der
neuen Stichbefehle an eine automatische Stickmaschine, die ein modifiziertes Stickmuster herstellen kann.
3. Verfahren nach Anspruch 1 oder 2, dadurch
gekennzeichnet, dass das Stickmuster als ein in
Einfachsprache gehaltenes Programm auf einer
der Einrichtungen folgender Gruppe gespeichert
ist: gelochtes Papierband, Diskette Magnetband,
ROM, PROM, EPROM, Blasenspeicher und ein
Designcomputersystem.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass im Schritt (c) die Anderungen eine
Anderung der Grosse des Stickmusters umfassen, und dass im Schritt (d) der Stichprozessor die
urspriingliche Stichdichte jeder Folge beibehalt.
5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass im Schritt (d) der Stichprozessor
die Stichdichte unabhangig von jeglicher Massstabsanderung andert.
die Stichdichte einer jeden Stichart unabhangig
andert.
7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass im Schritt (c) die Anderungen eine
Anderung der Ausrichtung des Musters umfassen.
8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass im Schritt (c) die Anderungen die
Herstellung eines Spiegelbildes des Ausgangsmusters umfassen.
die Lange der einzelnen Stiche kleiner als eine
Maximallange halt.
10. Verfahren nach Anspruch 8, dadurch
gekennzeichnet, dass im Schritt (d) der Stichpro-
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zessor die Lange einer jeden Stichart kleiner als
eine jeweilige Maximallange halt.
gekennzeichnet, dass im Schritt (d) der Stichprozessor Stichabstande als Funktion der Stichlange
bestimmter Sticharten liefert.
gekennzeichnet, dass der Schritt (b) das Erfassen
von Unregelmassigkeiten und Widerspruchlichkeiten in bestimmten Sticharten umfasst, und
dass im Schritt (d) der Stichprozessor die Unregelmassigkeiten und Widerspriichlichkeiten glattet.
13. Stichprozessoranlage zur Erzeugung eines
modifizierten Stickmusters fur eine Stickmaschine (3), dadurch gekennzeichnet, dass die
Anlage umfasst:
(a) eine eingangsseitige Lesevorrichtung (4, 5)
zum Auslesen von das Stickmuster betreffenden
Daten aus einem Speichermedium;
(b) einen Stichprozessor (1), der von der eingangsseitigen Lesevorrichtung eine Stich-furStich-Definition eines Stickmusters in Banddatenformat empfangen kann, das festliegende, schrittweise aufeinanderfolgende Stichbefehle umfasst,
jeder Befehl eine einzelne Stichbewegung zur
Bildung eines einzelnen Stiches bestimmt, aufeinanderfolgende Befehle aufeinanderfolgende einzelne Stichbewegungen zur Bildung von Folgen
einzelner Stiche bestimmen, die zusammen das
Stickmuster bilden; der Stichprozessor eine Einrichtung zur Analyse jeder Folge einzelner Stiche
durch das ganze Stickmuster aufweiset, und zur
Bestimmung der Sticharten, der Flache, der Stichlangen und der Stichabstande fur jede Folge;
(c) eine Eingabevorrichtung (2), mittels welcher
dem Stichprozessor (1) erforderliche Anderungen
in dem durch das Muster dargestellten Design
eingegeben werden konnen;
und der Stichprozessor (1) ferner umfasst:
(d) eine Generierungseinrichtung zur automatischen Generierung neuer Stichbefehle zur Modifizierung des Musters und zur Gewahrleistung,
dass die Stichdichte in jeder Folge innerhalb
spezifizierter Grenzwerte liegt.
14. Stichprozessoranlage nach Anspruch 13,
und weiterhin gekennzeichnet durch eine Einrichtung (7) zur Obertragung der modifizierten Stichbefehle an eine automatische Stickmaschine, die
ein Stickmuster herstellen kann.
15. Stichprozessor nach Anspruch 13, dadurch
gekennzeichnet, dass die Generierungseinrichtung einsetzbar ist, um zu gewahrleisten, dass die
Stiche in jeder Folge einem Merkmal oder jedlicher Kombination folgender Merkmale entspricht:
die Stichdichte bleibt innerhalb spezifizierter
Grenzen unabhangig von Anderungen in der
Grosse oder der Ausrichtung oder von Reflexionen des Musters;
die Stichdichte in alien Sticharten oder in jeglicher Kombination einer Stichart bleibt innerhalb
spezifizierter Grenzen, unabhangig von Anderungen in der Grosse, der Ausrichtung oder von
Reflexionen des Musters;
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maximale Fullstichlange;
maximale laufende Stichlange; und
maximale Sprung- und Plattstichlange.
16. Stichprozessoranlage nach Anspruch 13,
dadurch gekennzeichnet, dass die Generierungseinrichtung einsetzbar ist, um Stichabder Stichlange fur
als Funktion
stande
bestimmte Sticharten zu erzeugen.
nach
13,
Anspruch
17. Stichprozessor
dadurch gekennzeichnet, dass die Generierungseinrichtung einsetzbar ist, um Unregelmassigkeiten und Widerspriichlichkeiten in der
Stichdichte der Folgen eines vorweg aufgezeichneten Stickmusters zu glatten.
18. Stichprozessor nach Anspruch 13, ferner
gekennzeichnet durch eine Einrichtung zum
Plotten einer Bilddarstellung des modifizierten
Musters.
19. Stichprozessor nach Anspruch 13, ferner
gekennzeichnet durch eine Einrichtung zum
Aufzeichnen der neuen Stichbefehle.
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Revendications
1. Procede pour produire un motif de broderie modifie pour une brodeuse (3) au moyen
d'un processeur de points (1), comprenant les
etapes suivantes:
(a) le transfer!, depuis un dispositif de lecteur
d'entree (4, 5) au processeur de points (1),
d'une definition point par point d'un motif de
broderie sous une presentation des donnees en
bande, comportant des commandes de points
fixes, successives, pas a pas, chaque commande definissant un mouvement de point
individuel pour former un point individuel, des
commandes successives definissant des mouvements successifs de points individuels pour
former des suites de points individuels qui
constituent ensemble le motif de broderie;
(b) I'analyse par le processeur de points (1)
de chaque suite de points individuels dans tout
le motif de broderie et la determination par ce
processeur des types de points, de la zone, des
longueurs de points et des espacements des
points pour chaque suite;
(c) I'introduction manuelle dans le processeur
de points (1), au moyen d'un dispositif d'entree
(2), de tous changements necessaires dans le
dessin represents par le motif; puis
(d) la generation par le processeur de points
(1) de nouvelles commandes de points afin de
modifier le motif et d'assurer que la densite de
points dans chaque suite soit comprise dans
des iimites specifiees.
2. Procede selon la revendication (1), comprenant en outre I'etape consistant a communiquer
les nouvelles commandes de points a une brodeuse de production automatique en vue de la
production d'un motif de broderie modifie.
3. Procede selon la revendication (1) ou (2),
dans lequel le motif de broderie est memorise
sous la forme d'un programme a langage
detaille dans I'un des dispositifs compris dans
le groupe suivant: bande perforee, disque sou-
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so
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pie, bande magnetique, memoire morte (ROM),
(PROM),
memoire
morte
programmable
memoire morte programmable electriquement
(EPROM), memoire a bulles et systeme d'ordinateur de conception.
4. Procede selon la revendication 1, dans
lequel, pour I'etape (c), les changements component la variation de la grandeur du motif de
broderie et, pour I'etape (d), le processeur de
points maintient la densite de points originale
de chaque suite.
lequel, pour I'etape (d), le processeur de points
varie la densite de points independamment
d'un eventuel changement d'echelle.
varie la densite de points independamment
pour chaque point.
lequel, pour I'etape (c), les changements component le changement de I'orientation du
motif.
lequel, pour I'etape (c), les variations comportant la production d'une image-miroir du motif
original.
maintient la longueur des points individuels
inferieure a une longueur maximale.
maintient la longueur de chaque type de points
inferieure a une longueur maximale respective.
determine des espacements de points en fonction des longueurs de points de certains types
de points.
lequel I'etape (b) comporte la detection d'irregularites et d'incompatibilites dans certains
types de points , et dans lequel, au cours de
I'etape (d), le processeur de points fait disparaTtre les irregularites et incompatibilites par
repartition.
13. Equipement de processeur de points servant a produire un motif de broderie modifie
pour une brodeuse (3), equipement qui comprend:
(a) un dispositif de lecteur d'entree (4, 5)
pour lire des donnees relatives a un motif de
broderie d'un support d'information;
(b) un processeur de points (1) capable de
recevoir de ce dispositif de lecteur d'entree une
definition point par point d'un motif de broderie sous une presentation des donnees en
bande, comprenant des commandes de points
fixes, successives, pas a pas, chaque commande definissant un mouvement de point
individuel pour former un point individuel, les
commandes successives definissant des mouvements successifs de points individuels pour
former des suites de points individuels qui
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0 221 163
constituent ensemble le motif de broderie; le
processeur de points comportant des moyens
pour analyser chaque suite de points individuels
dans tout le motif de broderie et pour determiner
les types de points, la zone, les longueurs de
points et les espacements des points pour chaque
suite;
(c) un dispositif d'entree (2) au moyen duquel
les changements necessaires dans le dessin
represents par le motif peuvent etre introduits
dans le processeur de points (1);
et dans lequel le processeur de points (1)
comprend en outre
(d) un moyen generateur pour generer automatiquement de nouvelles commandes de points
afin de modifier le motif et d'assurer que la
densite de points dans chaque suite soit comprise
dans des limites specifiees.
14. Equipement de processeur de points selon
la revendication 13 et comprenant en outre un
moyen (7) pour communiquer les commandes de
points modifiees a une brodeuse de production
automatique capable de produire un motif de
broderie.
15. Processeur de points selon ia revendication
13, dans lequel le moyen generateur est capable
d'assurer que les points de chaque suite soient
conformes a I'une des prescriptions suivantes ou
a une combinaison quelconque des prescriptions
suivantes:
la densite de points doit rester a I'interieur de
limites specifiees, independamment de change-
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ments de la grandeur, de I'orientation ou de
reproductions symetriques du motif;
la densite de points, dans tous les types de
points ou dans une combinaison quelconque de
types de points, doit rester a I'interieur de limites
specifiees, independamment de changements de
la grandeur, de I'orientation ou de reproductions
symetriques du motif;
la longueur de points de remplissage doit correspondre a une longueur maximale;
la longueur de points courants doit correspondre a une longueur maximale; et
la longueur de points de saut et de satin doit
correspondre a une longueur maximale.
16. Equipement de processeur de points selon
la revendication 13, dans lequel le moyen generateur est capable de produire des espacements de
points en fonction de longueurs de points pour
certains types de points.
17. Processeur de points selon la revendication
13, dans lequel le moyen generateur est capable
de faire disparattre, par repartition, des irregularites et des incompatibilites dans la densite de
points de suites d'un motif de broderie preenregistre.
13 et comprenant en outre un moyen pour tracer
une repesentation visuelle du motif modifie.
13 et comprenant en outre un moyen pour enregistrer les nouvelles commandes de points.
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Method and apparatus of controlling an embroidery machine

Transcription

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