Abstract: An operation data processing device that summarizes trouble situations that occur during sewing operations. A log data storing device generates and stores log data based on an operation state of pattern sewing machines. A trouble summarizing device summarizes trouble information that occurs during operations. The trouble information is then summarized in association with a stitch number based on the stored log data. A displaying device visualizes the trouble information in a manner that allows a user to easily determine a trouble location and frequency for a given sewing pattern.

Abstract: An operation data processing device that summarizes trouble situations that occur during sewing operations. A log data storing device generates and stores log data based on an operation state of pattern sewing machines. A trouble summarizing device summarizes trouble information that occurs during operations. The trouble information is then summarized in association with a stitch number based on the stored log data. A displaying device visualizes the trouble information in a manner that allows a user to easily determine a trouble location and frequency for a given sewing pattern.

Abstract: A sewing machine capable of tracing an embroidery area by relatively moving a needle bar as a sewing device and an embroidery frame which holds a work cloth on which an embroidery pattern is embroidered based on embroidery data, comprises a calculating device that calculates a convex polygon in multiples of eight covering the pattern inside from the embroidery data, and positions of a plurality of vertexes comprised of the convex polygon, and a trace device that traces the embroidery area based on the vertexes found by the calculating device.

Abstract: A lot sewing time required for sewing a lot of embroidery patterns is calculated based on data of the embroidery pattern to be sewn and on data indicating the number of times the embroidery pattern is to be sewn in the lot. After data for the calculated lot sewing time is received, the lot is allotted to one of a plurality of sewing machines. The lot time for each of a plurality of lots allotted to the plurality of sewing machines is displayed on a display.

Abstract: A pattern sewing system having at least one pattern sewing machine which has a plurality of sewing heads, an operation status setting device which is electrically connected to the at least one pattern sewing machine, the operation status setting device setting operation status of each of the plurality of sewing heads such that each of the plurality of sewing heads is operative or inoperative, and a controlling device which makes the operation status set by the operation status setting device effective.

Abstract: A color switch setting data processing apparatus for a multi-needle embroidery machine is provided by a personal computer or other data processing device. The apparatus causes a display unit to display a stitching sequence and needle bar numbers for color switch setting data. If an insert instruction is produced by indicating the place of insertion by using a cursor and a needle bar number to be inserted is inputted to the place, then the color switch setting data is rewritten by shifting the needle bar number data from the place of insertion and the subsequent places in the stitching sequence, by one place to a later side in the stitching sequence. If a deletion instruction is produced by indicating the place of deletion by using the cursor, the color switch setting data is rewritten by shifting the needle bar number data in the places subsequent, on the later side, to the place of deletion, by one place to an earlier side in the stitching sequence.

Abstract: Disclosed is a data processing device for processing data representing an operation status of a pattern sewing system which includes at least one pattern sewing machine alternately operated by a plurality of operator groups. The data processing device may include a time zone setting device which sets a plurality of time zones. A plurality of operator groups operate the pattern sewing machine during a plurality of time zones, respectively. There is provided a log data recording device which records an operation status of the pattern sewing machine as log data, and an operation data creating device which creates operation data representing a predetermined operation parameter for each of a plurality of operator groups based on a plurality of time zones set by the time zone setting device and the log data recorded by the log data recording device.

Abstract: A sewing device including a head portion for mounting a needle; a support frame; and a bed unit supported on the frame and switchable between a usage position in confrontation with the head portion and a retracted position retracted away from the head portion compared with the usage position.

Abstract: A sewing machine including a head portion including a needle bar, the needle bar being for mounting a needle threaded with a needle thread; a principal shaft; a sewing machine motor for driving the needle bar via the principal shaft; a bed portion including a loop taker for taking a thread loop of the needle thread in cooperative operation with the needle; a loop taker drive shaft connected to move in association with the loop taker; a drive motor for driving the loop taker drive shaft independently of the principal shaft; a first detection unit for detecting a rotation condition of the principal shaft and outputting a first detection signal accordingly; a second detection unit for detecting a rotation condition of the loop taker drive shaft and outputting a second detection signal accordingly; and a synchronization control unit for controlling at least one of the drive motor and the sewing machine motor based on the first detection signal from the first detection unit and the second detection signal from the

Abstract: A sewing machine including a head portion including a needle bar, the needle bar being for mounting a needle threaded with a needle thread; a principal shaft; a sewing machine motor for driving the needle bar via the principal shaft; a bed portion including a loop taker for taking a thread loop of the needle thread in cooperative operation with the needle; a loop taker drive shaft connected to move in association with the loop taker; a loop taker drive unit including a loop taker drive motor for driving the loop taker drive shaft independently of the principal shaft; a synchronization control unit for controlling at least one of the loop taker drive motor and the sewing machine drive motor so that the loop taker and the principal shaft rotate in synchronization; and an offset adjustment unit provided to the synchronization control unit and for adjusting an amount that the phase of the loop taker is offset from a reference phase offset amount preset for the loop taker with respect to the principal shaft.

Abstract: A sewing machine including a head portion for mounting a needle with a needle thread; a needle drive motor for driving the needle; a bed portion; and a loop taker module detachably fixed to the bed portion and including: a loop taker for catching a thread loop of the needle thread of the needle; and a loop taker drive motor for driving the loop taker.

Abstract: A sewing machine including a needle bar for mounting two needles separated by a distance in a principal shaft direction; a principal drive shaft for driving the needle bar and extending in the principal shaft direction; a bed portion; a first loop taker disposed in the bed portion; a transmission system for connecting movement between the first loop taker and the principal drive shaft; a loop taker module detachably provided to the bed portion; a second loop taker provided to the loop taker module; and servomotor provided in the loop taker module and for driving the second loop taker.

Abstract: A sewing system includes a first automatic sewing machine and at least one second automatic sewing machine. The first automatic sewing machine includes a RAM for storing stitch data. The stitch data is processed into data for primarily controlling a needle position, and the data thus processed is stored in the RAM. The first automatic sewing machine further includes a data transmitting device for outputting the processed stitch data to the outside of the sewing machine. The second automatic sewing machine includes a data receiving device for receiving the processed stitch data from the data transmitting device in the first automatic sewing machine. When receiving the processed stitch data from the data transmitting device in the first automatic sewing machine, the second automatic sewing machine starts sewing according to the processed stitch data thus received.

Abstract: A stitch data preparing device for an embroidery sewing machine, is capable of automatically determining an optimum embroidery pattern for making embroidery stitches in an embroidery area, according to data of outline defining points, types of line elements of an outline defining the embroidery area input, and at least one main line or subline designated. The stitch data preparing device also automatically prepares stitch data by a stitch data creation control routine corresponding to this optimum embroidery pattern. Accordingly, the number of divisions of the embroidery area is greatly reduced. The shape of the embroidery area is freely set. Further, the embroidery stitches reflecting the shape of the embroidery area are simply formed.

Abstract: A sewing system including (A) a sewing device which includes (a) a sewing needle, (b) a first driver to reciprocate the needle, (c) a second driver to move the needle and a work sheet relative to each other in a direction crossing an axis line of the needle, and (d) a synchronizer to synchronize the reciprocation of the needle and the relative movement of the needle and work sheet, with each other, so as to form a series of stitches on the work sheet, (B) a detector associated with the sewing device to detect an abnormality of the sewing device, (C) a memory associated with the sewing device and the detector to store operation-state data indicative of an operation state of the sewing device upon detection of the abnormality, and (D) a utilizing device which utilizes the stored operation-state data for a control of the sewing system.

Abstract: An embroidery data producing apparatus reads outline data of embroidery regions stored in a RAM, and detects a containing-contained relationship between the embroidery regions based on the outline data of the embroidery regions. The embroidery data producing apparatus then determines the shape of the contained-embroidery regions, and automatically determines, based on the determined shapes, whether portions of the embroidery-containing regions containing the contained-embroidery regions should be scooped out or embroidered by overlapping sewing. Accordingly, even when embroidery regions are in a containing-contained relationship, the embroidery data producing apparatus can determine, without depending on the operator, whether the portions of the embroidery-containing regions corresponding to the contained-embroidery regions should be removed from the embroidery-containing region.

Abstract: An embroidery data producing apparatus for an embroidery machine which forms embroidery stitches based on embroidery data has the ability to create an embroidery pattern having a uniform thickness without generating overstitched areas. The apparatus includes storage for embroidery data, a selecting mechanism for selecting embroidery data from storage which will generate an overstitched area and a changing mechanism for changing the selected embroidery data into data which will not generate the overstitched area.

Abstract: An embroidery data producing apparatus for an embroidery machine which forms embroidery stitches, based on the embroidery data having information about stitch positions comprises a CPU, RAM and ROM. The RAM has a pattern data memory for storing pattern data which represents outlines of a pattern where embroidery will be given, and a embroidery data memory for storing the made embroidery data. The CPU reads the pattern data stored in an external memory device and stores the pattern data in the pattern data memory. The CPU stores the inclination angle input through the keyboard by an operator in the RAM. The CPU sets a pair of facing outlines which extend to a predetermined embroidery executing direction based on the pattern data stored in the pattern data memory. The CPU sets stitch positions on the first outline of a pair of the outlines according to a predetermined thread density.

Abstract: Process and apparatus for producing, based on main outline segment data representative of a pair of opposed main outline segments which define an embroidery area by cooperating with a pair of opposed secondary outline segments connecting between corresponding pairs of opposed ends of the main outline segments, sets of stitch position data representative of respective stitch positions where a sewing needle of a sewing machine penetrates a work sheet to form respective stitches with a sewing thread, a stitch line consisting of a series of the stitches alternately turning at the opposed main outline segments, thereby providing an embroidery in the embroidery area.

Abstract: An apparatus for processing sewing data necessary to sew an embroidery in an area consisting of blocks, by filling with stitches each of the blocks in a sewing direction from a sewing start segment toward a sewing end segment, the sewing start and end segments being defined by, and between, a pair of first points and a pair of second points, respectively, the first and second points being determined on an outline of the each block, the apparatus including a first device obtaining first information relating to a length of a first straight line segment connecting between one of the two first points and one of the two second points, and a length of a second straight line segment connecting between the other first point and the other second point, the first and second straight line segments intersecting each other, a second device obtaining second information relating to a length of the each block in the sewing direction, and a third device producing the sewing data by utilizing the first information, the second