JPS6054077B2 - Sewing data creation device for automatic sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sewing data storage medium for an automatic sewing machine, and more particularly to an improved sewing data storage medium in which sewing data for controlling cloth feed of an automatic sewing machine is written.

As is well known, in industrial electronic sewing machines, sewing data programmed in advance in a storage device is recorded and held.
An automatic sewing mechanism is installed that automatically controls the cloth or needle according to a predetermined sewing pattern based on this sewing data, and automatically sews a desired sewing pattern.

The sewing data is written in a storage medium in the storage device, and by exchanging this storage i-medium, it becomes possible to arbitrarily select a different sewing pattern for sewing, which saves labor on the sewing machine. Also, it can greatly contribute to improving the sewing speed. As the storage medium, a semiconductor memory such as a P-ROM, a magnetic card, etc. is generally used, and the desired sewing pattern, sewing speed, and other control data are stored and held in the storage medium in accordance with the sewing operation order. There is. Normally, the sewing data consists of control commands for the relative displacement position of the needle and cloth for each stitch of the sewing machine that forms the sewing pattern, the sewing speed, and other movements, and the control information for one sewing pattern consists of control commands for each stitch of the sewing machine. It is formed as a set of control commands for each. Therefore, in order to automatically sew a desired sewing pattern with this type of automatic sewing machine, it is necessary to create sewing data corresponding to the sewing pattern and write it to a predetermined storage medium. Become.

Conventionally, to create this type of data, the desired sewing pattern was written in advance on a section vapor, etc., the coordinates of the needle drop point of each stitch were read one by one according to the sewing order, converted into data, and then written to a storage medium. I was doing it by immersing myself in it.

However, in the storage media used in such conventional methods, only one piece of sewing data is stored on one storage medium, and as a result, the storage capacity cannot be used effectively. Furthermore, there is a drawback that it is necessary to attach and detach each storage medium each time data is written or read. The present invention has been made in view of the above-mentioned conventional problems, and its object is to provide an improved sewing data storage medium for automatic sewing machines that can effectively utilize storage capacity! It's about offering your body.

In order to achieve the above object, the present invention provides a non-volatile, non-destructive sewing data storage medium that controls cloth feed of an automatic sewing machine by reading out sewing data in which sewing data according to a desired sewing pattern is stored. In this case, the storage section of the storage medium includes a data storage section that stores a plurality of sewing data and a table of contents storage section that stores the starting address of each sewing data. The feature is that the sewing data is stored sequentially starting from the address, and further, 4 is characterized by automatically searching for an empty memory area of the sewing data storage medium in which a part has been written, and storing new sewing data in the empty memory area. This is a characteristic feature.

Preferred embodiments will be described below based on the drawings.

FIG. 1 shows the external appearance of a data creation device to which a sewing data storage medium according to the present invention is applied. The data creation device includes an input tablet board 10 and a stylus pen 12. By touching a desired position, a writing input signal corresponding to the touched position can be obtained from the input tablet board 10. The input tablet board 10 is
As shown in the figure, the board surface is divided into two parts, and has a pattern input section 14 that can input a desired sewing pattern as an image, and an operation key input section that has a plurality of operation keys arranged on the side of the pattern input section 14. 16, when the slither pen 12 touches any position on the pattern input section 14, a signal corresponding to the coordinates in the pattern input section 14 can be output, and the sliver pen 12 can be displayed on the operation key input section 16. A predetermined operation key input can be performed by touching an arbitrary operation key position.

As is clear from FIG. 1, the data creation device further includes a display panel 18 that displays the operation procedure of the operation keys, and a CRT that displays the sewing pattern input to the pattern input section 14.
A display panel 18 is used to instruct an operator on the operating procedure for creating sewing data, and the created sewing data can be monitored on a CRT display 20 before being written to a storage medium. be.

The display panel 18 in the embodiment has P-RO in a part thereof.
An M socket 22 is provided, a P-ROM used as a storage medium in the embodiment is inserted into the socket 22, and sewing data is written and stored in the P-ROM. FIG. 2 shows a detailed embodiment of the display panel 18, in which each operating procedure is displayed using a light emitting diode or other lamp display and a numerical display, and the P-ROM can be easily accessed by operating the handle 24. It is understood that it can be inserted into and removed from the socket 20. The input tablet board 10, stylus pen 12, display panel 18 and CRT display 20
are each connected to a computer block 26, and in response to control commands from the computer block 26, various functions such as creating sewing data or reading sewing data from a stored storage medium can be accomplished.

All of the above operations are controlled by a microcomputer provided inside the computer block 26, and the program is stored in a programmable read-only memory P-ROM provided for this microcomputer control. Each operation is controlled and calculated according to the program.

As described above, the input tablet board 10 in FIG. The computer block 26 determines the pressed position and processes corresponding to the corresponding section are performed.

Therefore, it is understood that the input tablet board 10 has the same function as having a plurality of operation keys on the board surface. The operation key input unit 16 in FIG. 2 includes a plurality of operation keys, and the function of each key will be explained below.

1 Mode key 28......Switches the data creation device to the following four modes.

ROM input key 28a... Memorized P-RO
M is set in the socket 20, sewing data is read from this ROM, and the data is transferred to a temporary memory provided in the data creation device.

It is used for ROM transcription, editing, content checking, etc.
Pen input key 28b...Slider pen 12
The sewing pattern graphic data inputted to the pattern input section 14 by is written into the temporary memory.

Data write key 28c...Writes the sewing data written in the temporary memory to the P-ROM. Pattern display key 28d...Displays the pattern written in the temporary memory on the CRT display 20. 2 Data input key...Instructs to start data input.

Clear start key 30... Instructs to start data input during ROM input and pen input.

Start check key 32...Instructs to start ROM writing when writing data. 3 data input method key 34...Selects three types of data input methods during pen input.

One-stitch input key 34a: Indicates each needle drop position indicated by the sliver pen 12 on the pattern input section 14 as is.

Two-point input key 34b...Converts a straight line between two points selected with the stylus pen 12 into stitch data at a predetermined equal pitch.

Continuous input key 34c... Forms stitch data along the trajectory drawn on the pattern input section 14 with the stylus pen 12.

4 sewing speed keys 36...low speed key 36a1 medium speed 1 key 36b1 medium speed 2 key 36c and high speed key 36d
Select from four speeds.

5 Automatic thread trimming key 38...... Gives instructions for thread trimming.

6 Cloth feed key 40...Moves only the cloth without sewing.

7 Table return key 42... Automatically returns the cloth feed table to the data input start position.

8 End key 44... Instructs to complete data input.

9 Scale key 46... Indicates the scale of the sewing pattern and the actual sewn product.

10th stitch pitch key 48... Instructs the stitch pitch.

11 Pattern number key 50...Instructs the pattern number at the time of ROM input and data writing.

12 replacement keys 52...0 to 9 and all keys 52
a, and provides instructions such as pitch, scale, pattern number, etc.

As described above, the operation key input unit 16 of the input tablet board 10 in this embodiment is provided with the various operation keys described above, and by selectively operating these operation keys with the stylus pen 12, Desired data creation procedures can be instructed.

Then, each of the aforementioned operating procedures is sequentially displayed on the display panel 18. Each display on the display panel 18 is controlled by the operation key input section 1.
It includes the following indications corresponding to 6.

That is, 1 mode display 542 data input method display 5
6 3 Sewing speed display 58 4 Scale, stitch pitch and pattern number display 60, 62
, 64 Furthermore, the display panel 18 in the embodiment is provided with the following display.

That is, 5R0M address and memory number display 66,6
8...Displays the write start address when writing to ROM, or displays the number of memories used during data creation and the number of memories used for the corresponding pattern when inputting to ROM.

6R0M write operation display 70... Performs an end display indicating that the ROM write operation is in progress and that the write to the ROM has been correctly performed.

7 Error display 72...Displays various erroneous operation states for each correctable or uncorrectable erroneous operation.

8 Power display 74...Displays power on/off.

Various sewing data are created using the data creation device described above, and sewing data from a storage medium such as a P-ROM is simply read out and displayed on the CRT display 20 on a monitor.

Normally, sewing data is created by drawing a desired sewing pattern on the pattern input section 14 of the input tablet board 10 using the stylus 7 and the pen 12, and then transferring this sewing pattern to the P-RO.
Pen input to write in M and P-ROM that reads sewing data from an existing P-ROM and transfers it to another P-ROM.
M input.

In either case, the data creation device 2 is provided with a temporary memory such as a ROM, and pen input or ROM input data is temporarily stored in the temporary memory.
After checking the stored contents on a CRT display, this manual data is transferred and stored in the P-ROM installed in the socket 22. There are three problems with the data input described above, particularly when inputting a desired sewing pattern using the stylus pen 12 to draw a desired sewing pattern on the pattern input section 14: the procedure for operating the stylus pen 12 is relatively complicated, and erroneous operations are likely to occur.

In this embodiment, in order to prevent the occurrence of such erroneous operations during data creation, each time an operation key is input using the stylus pen 12, the next operation procedure is specified in a flashing display on the operation panel 18, and the stylus pen 412 When you key in one of the operating steps specified by the keypad, only the selected step lights up and the other steps go out. This allows you to accurately data read even complex operating steps without requiring any skill. It has the advantage that it can be created.

The data creation procedure will be explained in detail below, taking as an example pen input with a complicated operation procedure.

Data Input to Temporary Memory 1-1 At the same time as the power is turned on, four displays on the mode display 54 blink.

Therefore, the operator only has to select a desired key from the mode key 28 in the operation key input section 16 of the input tablet board 10 and specify it with the stylus pen 12. In this operation example, the pen input key 28b is selected by. The characteristic feature of this embodiment is that by operating any of the mode keys 28 indicated by the flashing mode display 54, the flashing of the mode display 54 stops and the mode display 54 is selected. In the mode display 54, only the display corresponding to the operation key (in the embodiment, the pen input key 28b) lights up, and the other displays go out. As a result, the operator has to confirm each operation procedure each time. The sewing data can be created while the sewing machine is in use, making it possible to proceed with the operation procedure while reliably eliminating the occurrence of erroneous operations.

In addition, in this embodiment, the input tablet board 10 responds to the operation procedure instructed by the lighting of the display panel 18.
If there is an erroneous operation by the slither ben 12, the erroneous operation is displayed on the display panel 18 so that the operator can confirm the actual procedure at each step of the operating procedure.

For this purpose, as described above, the error display 72 is provided on the display panel 18, and the error display 72 includes a first error display 72a corresponding to a correctable erroneous operation and a first error display 72a corresponding to an uncorrectable erroneous operation. Second error display 72b
is provided, and an error display corresponding to each erroneous operation is performed. For example, in the embodiment, the error display occurs when, for example, the speed key 36 other than the mode key 28 is selected with the stylus pen 12 during the first stage mode selection, and when such an erroneous operation is performed, , the error display 72 on the display panel 18 lights up or flashes, and the selection of the speed key 36 does not affect the previously created data, so such an erroneous operation is treated as a correctable erroneous operation, and the first The error display 72a lights up or flashes.

Of course, in this embodiment, it is also preferable that the error display is to notify the operator of the erroneous operation by means of a buzzer or the like at the same time as the lighting or blinking of a lamp. When the correctable erroneous operation described in b above is performed, by continuing to input the correct key in the embodiment, it is possible to cancel the first error display and continue data creation. In the example, the correct mode key 281/
By inputting the pen input 28b with the stylus pen 12, the selection of the speed key 36 can be invalidated and data creation can be continued by operating the pen input key 28b.
11-2 The scale display 60 flashes to instruct you to specify the scale. The operator presses the number key 52 of the operation key input section 16.
A desired scale is specified using the and scale key 46, and if this operation is performed correctly, the scale display 60 stops blinking and the selected scale value is displayed on the numerical display 76. Even when specifying this scale, if an erroneous operation occurs, the error display 72 is activated, and the operation can be confirmed at this stage and the erroneous operation can be corrected.

21-3 The pitch display 62 blinks and designation of the stitch pitch is instructed. The stitch pitch can be specified using the number key 52 and the stitch pitch key 4 in the same way as the scale specification.
8, and when the pitch is specified correctly, the pitch display 62 stops blinking for 3 times and becomes lit.
At the same time, the specified stitch pitch is displayed on the numerical display 76.

The four lamps of the 1-4 speed display 58 blink, instructing selection of the sewing speed of the sewing machine.

5 Then, the operator selects one of the speed keys 36, and this selection causes the speed display 58 to stop blinking, and only the selected lamp to turn on while the other lamps turn off. That will happen.

1-5 Data input method display 56 flashes to instruct selection of input method.

In the embodiment, the data input method is stylus pen 1.
In step 2, a single stitch input creates a stitch only at the touched position on the screen of the pattern input unit 14, and in step 2, the two points indicated by the stylus pen 12 are divided at the selected stitch pitch.
There are point-to-point input, and continuous input in which a desired pattern is drawn on the pattern input section 14 with the stylus pen 12 and a stitch is formed at the selected pitch according to this trajectory. An input method is selected.

Then, when only the lamp of the selected input method is lit and the other lamps are turned off, it is determined that the input method has been selected correctly. 1-6 The lamp selected in the first stage and once turned on, that is, the pen input lamp in this case, flashes again to instruct the start key operation.

In this embodiment, a correct start is performed by the clear start key 30 during pen input, and by selecting the clear start key 30 with the stylus pen 12, the blinking of the pen input is stopped and the lighting is continued again.

Then, on the display panel 18, the memory number display 68 lights up, and the number display 78 displays the number of temporary memories. The 1-7 stitch pattern is input.

Pattern data is input by touching the pattern input section 14 with the stylus pen 12, and the automatic thread trimming key 38, cloth feed key 40, or table return key 42 is operated as necessary.

Then, when the pattern data input is completed, the end key 44 is selected. Simultaneously with the selection of this end key, all the lamps of the mode display 54 start blinking, and the selection of the next operating procedure is instructed. As described above, pattern data corresponding to the desired sewing pattern selected with the stylus pen 12 is stored in the temporary memory of the data creation device, and as described above, each operation procedure is Since a blinking instruction is given on the display panel 18 each time, the operator can easily perform the data creation operation in the correct procedure.

Furthermore, this embodiment has the advantage that the error display 72 always operates when an erroneous operation occurs, and there is no risk of continuing data creation without noticing the erroneous operation.

2 Monitor display on the CRT display 20 (confirmation of data written to temporary memory) 2-1 Selection of the mode key 28 is instructed by blinking of the mode display 54 mentioned above, and in this case, the pattern display key 28d is By selecting , the mode display 54 stops blinking and only the display lamp lights up.

2-2 The data written into the temporary memory by the above operation is displayed as an image on the CRT display 20, but the data written into the temporary memory described above does not indicate the absolute coordinates of each stitch. Therefore, when displayed on the screen of the CRT display 20, the incremental value data written in the temporary memory is converted into absolute value data that can be displayed on a monitor image. action is necessary.

That is, in a normal case, in an automatic sewing machine, the cloth feed control device sequentially moves the cloth for each stitch according to the sewing data, and therefore, the increment value data 2c for each stitch must be stored as the sewing data. Must be.

Figure 3 shows an example of this type of sewing data.
X-axis data and Y-axis data are written to the N address and (N+1) address, respectively, and these data are
In the figure, 2. is processed as an 8-bit digital signal.

Then, X- or Y-axis incremental value data is written in the 5 bits up to DO-D4, and the D5 and D6 bits of the N address are filled with sewing machine control signals, such as sewing machine stop, sewing machine 3 (operation command or thread trimming), etc. Thread removal operation commands and the like are written, while sewing speed commands are written in bits D5 and D6 of the (N+1) address.

Then, the cloth feeding direction for each of the X and Y axes is written in the D7 bit, and 3 (these two-digit addresses N, .
One stitch (needle drop point coordinates) can be indicated at N+1. Figure 4 shows an example of an actual sewing pattern.
Starting point P.

An example is shown in which stitches are formed linearly and at equal intervals from 4C to the 5th stitch P5, and 4C stitches P5 to P8 are moved linearly along the Y-axis direction. The sewing data thus formed is shown in FIG. In FIG. 5, the symbol ROJ of the D7 bit indicates the positive direction and RlJ indicates the negative direction. Also, the sewing machine control ROlJ in bits 8 and D6 indicates the sewing machine operation command,
Further, the sewing speed RllJ indicates high speed. Therefore, as is clear from FIG. 5, it is understood that the sewing pattern shown in FIG. 4 is sewn at a constant high speed. And D in Figure 5.

-As shown by the D4 bit increment value data, each increment value data indicates only the increment value between each stitch, and does not indicate the absolute value on the XY coordinate axes, so the sewing data is Furthermore, even if the sewing pattern is directly supplied to the CRT display 20 for monitor checking, no sewing pattern can be shown.

Therefore, in this embodiment, the CRT display 20
When displaying on the monitor, the increment value data for each stitch is sequentially added to calculate each sewing pattern coordinate, and the sewing pattern coordinates indicated by this absolute value are displayed on the CRT display 2.
It is characterized in that it is displayed as 0.

Furthermore, in the sewing pattern coordinates obtained by simple sequential addition as described above, the sewing pattern coordinates are displayed on the CRT display 20.
There may be cases where it is impossible to display correctly on the screen,
For example, the starting point P of a sewing pattern. Since the coordinates do not necessarily coincide with the coordinate origin or the drawing start point of the CRT display 20, there is a problem that simply displaying the sewing pattern coordinates causes the sewing pattern to be off the screen. In this embodiment, in this embodiment, the coordinates of each sewing pattern described above are calculated for all stitches, and the image reference position of the sewing data on the monitor screen display is determined from the calculation result, and the image reference position and each sewing pattern are The monitor display pattern coordinates were calculated by calculating the coordinates, and the placement on the screen was considered. The sewing pattern of the sewing data is displayed on the monitor according to the monitor display pattern coordinates,
This makes it possible to check the stitch data before transferring the sewing data to a storage medium such as a P-ROM. FIG. 6 shows a preferred embodiment of the configuration of the control device, mainly within the computer block 26, for displaying the sewing data in the temporary memory on a monitor.

The computer block 26 includes a CPU 8O, and various operation key signals and image signals from the stylus pen 12 are supplied to the CPU 8O through a pen input section 82, and after being subjected to predetermined processing, are stored in a RAM 84 which is a temporary memory 5. The data is written as data, and after the monitoring described below is completed, it is transferred to the ROM 86, which is a storage medium. Then, in order to monitor the sewing data, the pattern data converted into absolute values is temporarily stored in the X data latch 88 and the Y data latch 90, and this stored value is converted into an analog signal by the DA converters 92 and 94. After being converted to CR
An image is displayed on the T display 20. An address decoder 96 is provided to control the addresses of both data latches 88 and 90, and the address of each data latch 88 and 90 is selected by the CPU 8O.

The RAM 84 also contains the stylus pen 1 described above.
It includes an incremental value data RAM 98 for storing incremental value data 2 and 2 in the data input process from 2, an addition data register 108 for storing addition data for monitor display, and for determining the image reference position of the display 20. Includes a minimum data register 102.

2. Next, the operation of converting incremental value data to absolute value data using the processing device shown in FIG. 6 will be explained.

When the stylus pen 12 presses the pattern display 28d,
First, the three pieces of incremental value data stored in the incremental value data RAM 98 are sequentially added to determine the image reference position of the CRT display 20.

In the embodiment, the image reference position is determined by searching for the minimum absolute value data of the sewing pattern, and the stitch having this minimum data is located on the CRT display 20.
As a result, the sewing pattern is reliably prevented from coming off the display screen. The search for the minimum data is first performed using the incremental value data RAM 98.
The data within are sequentially added and stored in the addition data register 100, the sewing pattern coordinate values XA and YA at this time are determined, and these are sequentially compared and held by the minimum data register 102.

That is, the minimum data register searches for the minimum value of each sewing pattern coordinate value XA, YA and holds this minimum value. As described above, all the incremental value data are added once and the minimum data Xn. in, Y! T. I
When holding of n is completed, each increment value data
, Y are sequentially added, and again the addition data register 100
Sewing pattern coordinate values XA, YA are temporarily stored in sequence.

Then, during the second and subsequent additions, the CPU 8O calculates the added sewing pattern coordinate values XA, YA and the minimum data X. nin, Yyu. are calculated to obtain monitor display pattern coordinate values XB and YB, which are supplied to each X data latch 88 and Y data latch 90 according to instructions from address decoder 96. FIG. 7 shows monitor display pattern coordinate values XB and YB according to the sewing pattern shown in FIG. Ru.

Therefore, the CRT display 20 displays on the monitor that the stitch of the minimum data is located at the origin of the coordinates, and the R
It becomes possible to check the sewing data stored in the AM98 in advance.

Sequential addition of each incremental value data is performed by first obtaining the minimum data, and then repeating the addition and calculation with the minimum data using this minimum data in the calculation. In the embodiment, the latches 88 and 90 need only have a capacity to store one monitor display pattern coordinate value, making it possible to make the structure smaller and lower in price.

Therefore, while the monitor display is being performed on the CRT display 20, the CPU 8O continuously repeats the operation of sequentially adding the incremental value data and performing calculations with the minimum data. 2-3 If the monitor display on the CRT display 20 described above matches the desired sewing pattern, the operator presses the reset key 53 of the operation key input section 16,
Monitor display operation is completed.

With the operation of the reset key 53, the mode display 54 is displayed again.
blinks, and the next operation, according to this embodiment, is to instruct selection of writing to the ROM. Writing to 3R0M As mentioned above, since the data written and created in the temporary memory RAM 98 has been monitored and confirmed, next, this sewing data is transferred to the ROM 86.

3-1 Writing selection instruction by blinking the mode display 54 mentioned above.

The operator selects the specified P-ROM from the P-ROM on the display panel 18.
Set it in the M socket 22 and select the data write key 28c with the stylus pen 12.

As a result, the mode display 54 stops blinking, only the write lamp is turned on, and the other lamps are turned off. 3-2 In this state, the start check key 32 is selected, and as a result, the contents of the ROM 98 are transferred directly to the P-ROM.

After the transfer to the P-ROM has been performed accurately, the R
The 0K2 lamp of the OM write operation display 70 lights up to indicate the end of the write operation, and the series of sewing data creation operations is completed.

FIG. 8 shows a preferred example of a P-ROM as a non-volatile, non-destructive sewing data storage medium used in the present invention.

According to this, the table of contents storage section 180 is located at the beginning of the 2P-ROM.
A data storage section 190 for storing a plurality of sewing data is successively provided. In Figure 8, 10 sewing data are P-RO.
M, and the number (NO.
．． ) The starting addresses of ■ sewing data patterns from 0 to 9 are stored in order, that is, address ROOO
Oyo, the first address ROOl4J of pattern number 0 is stored in ROOO, and the next address 33 is stored in ROOO.
RABCDJ, which is the start address of pattern number 1, is stored in OO2 and ROOO3J. Similarly,
ROOl2JS which is the final address of the table of contents storage unit 180
The start address of pattern number 9 is stored in rOOl3J.
A plurality of sewing data are sequentially written in the pattern number order in the address ROO0 in FIG.
Sewing data of pattern number 0 is stored in the area 192 from l4J to RABCD-1J. FIG. 9 is a block diagram showing an embodiment for writing into the ROM, in which 103 is a data buffer, 104 is a data latch, 105 is an address latch, 106 is an address decoder, 107 is a write control circuit, and 108 is a data latch. indicates the auxiliary memory when writing, and Fig. 6 and Fig. 2
Components that are the same as those in the figures are designated by the same reference numerals.

Further, FIG. 10 shows a flowchart showing the contents of the present invention, and the operation thereof will be explained below along with this flowchart.

When the start check key 32 is selected, a signal is output from the CPU 80 to the ROM 86 to enable data reading.

That is, in addition to controlling the data buffer 103 and address latch 105, the write control circuit 107 controls the ROM
86. In this state, CPU8O
reads the data in the table of contents storage section of the ROM 86, sequentially reads the data in the table of contents storage section starting from the start address of pattern number 0 (address 0014 in the Tanshin system), and stores the data in the table of contents storage section in this ROM.
The starting address of the final pattern stored in the ROM 86 is read, and this address and pattern number are stored in the auxiliary memory 108 of the ROM 84. Next, the data of the final pattern is read sequentially from the first address of this final pattern, and the address where the END signal of the final pattern is stored, that is, the final address of the memory area used by the ROM 86, is read and stored in the auxiliary memory 108 of the ROM 84. do.
By knowing this final address, CPU8O
The free memory area of M86 is calculated and stored in the auxiliary memory of RAM84.

Compare the number of memories used for the sewing data written and created in the temporary memory RAM 98 with the free memory area of the ROM 86 mentioned above, and if the free memory area is large, write the number next to the final pattern number and its starting address. The pattern number display 76 and the start address display 78 of the display panel 18 are displayed.

Next, the data in the RAM 98 is written into the ROM 86.

At this time, the address decoder activates the data latch 10 and the address latch 105, and
The write control circuit 107 is set to a state in which the ROM 86 can write data.

The starting address (R
(stored in the auxiliary memory of the AM84) to the ROM86
is written to a predetermined 2 bytes of the table of contents storage section 80, and the start address of the free memory area of the ROM 86, that is, RA
The sewing data of M98 is sequentially written from the top address where it is stored. When the sewing data up to the END signal is correctly written, the CPU 8O lights up the display lamp 0K on the display panel 18. Further, if the free memory area described above is smaller than the number of memories used for sewing data, the CPU lights up the error display lamp 72b on the display panel 18 without writing.

As explained above, according to the present invention, it is possible to efficiently store a plurality of sewing data in a single storage medium, and it is also possible to efficiently store a plurality of sewing data in a free memory area of the storage medium that already stores some sewing data. In addition, it is possible to prohibit the storage of sewing data that exceeds the free memory area, which makes handling easier and improves data reliability, which has great practical effects. .

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing a preferred embodiment of the data creation device used in the present invention, FIG. 2 is an explanatory diagram showing details of the input tablet board and display panel in FIG. 1, and FIG. 3 is a diagram showing the present invention. FIG. 4 is an explanatory diagram showing an example of a sewing pattern processed by the present invention. FIG. 5 is an explanatory diagram showing an example of sewing data corresponding to FIG. 4. , FIG. 6 is a block diagram showing an example of a processing circuit that converts incremental value data and absolute value data, and FIG.
FIG. 8 is an explanatory diagram showing an example of the absolute value data converted in FIG. 6, FIG. 8 is an explanatory diagram showing the data structure of the sewing data storage medium used in the present invention, and FIG. FIG. 10 is a block diagram showing an example of writing to a medium, and is a flowchart showing the contents of the present invention. In the figure, 10 is an input tablet board, 12 is a stylus pen, 18 is a display panel, 80 is a CPU 82 is a pen input section, 84 is a RAM 186, 106 is an address decoder, 103 is a data buffer, and 107 is a write control circuit. .

Claims (1)

[Scope of Claims] 1. In a sewing data creation device that stores sewing data according to a desired sewing pattern in a non-volatile, non-destructive data storage medium under microcomputer control, the data storage medium and the microcomputer each have the following means. A sewing data creation device for an automatic sewing machine, characterized in that it is equipped with the following. (1) The data storage medium is provided with a table of contents storage means for sequentially storing the start address of each storage pattern, and a data storage means for sequentially storing sewing data of each storage pattern. (2) The microcomputer includes means for storing sewing data for the new pattern in a temporary memory, and a final pattern number stored in the table of contents storage means after storing the sewing data for the new pattern in the temporary memory. means for calculating the amount of free memory area by sequentially reading the data for the pattern from the first address part of the pattern data, using the address where the end signal of the pattern data is stored as the final use address of the data storage medium; means for comparing and calculating the amount of area and the amount of sewing data to be newly stored stored in the temporary memory; and when the result obtained by the means for comparing and calculating is greater than the amount of free memory area; The apparatus further comprises means for executing a process of storing the contents of the temporary memory in a free memory area of the data storage medium.