JPH06303383A - Manual scanning speedup compensating device - Google Patents

Abstract

PURPOSE:To reduce re-reading accompanied by incorrect reading by compensating misreading as far as possible due to the speedup of a manual scanning speed during the manual scanning of a handy scanner. CONSTITUTION:A manual scanning speed detection circuit 14 detects the manual scanning speed of the handy scanner at all times and an overspeeding judgement value memory 17 holds an overspeed judgement value corresponding to the upper scanning speed limit of a above-mentioned manual scanning speed when a two-dimensional picture original can not be read any more. A correction picture generation part 19 corrects and generates the one-dimensional picture of the line of main scanning judged as the overspeed by a speed judging circuit 18 based on the one-dimensional pictures stored in a two-dimensional picture memory 12, at least one of the one-dimensional picture of the line of the main scanning in the front stage or the one-dimensional picture of the line of the main scanning at the rear stage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual scanning speed over-compensation device mainly used in a handy scanner, and more particularly, to a two-dimensional image original while manually scanning the two-dimensional image original in a certain direction. By compensating for the read-out caused by the speed over of the manual scanning speed that occurs when the image original is read, it is possible to compensate the reading failure in such a handy scanner and the re-reading accompanying the reading failure. The present invention relates to a manual scanning speed overcompensation device that can be reduced.

[0002]

2. Description of the Related Art Conventionally, an embroidery data generating device using a handy scanner, which generates sewing data used for embroidery on a home sewing machine, has also been provided. In such an embroidery data generation device for a home-use sewing machine, first, a rough sketch drawn on paper with a felt-tip pen or the like is read as a two-dimensional image by a handy scanner.
Also, based on the two-dimensional image read in this way,
Sewing data used for actual embroidery is generated. According to the embroidery data generation device for such a home-use sewing machine, the pattern to be embroidered can be relatively easily designed by writing on paper.

A handy scanner used in such an embroidery data generator for a home sewing machine is compact in size, relatively easy to handle, and relatively inexpensive. It has features. Therefore, it is widely used not only in such an embroidery data generation device but also in various fields. For example, even in a so-called word processor intended for use in a general household, there is one in which a two-dimensional image read by such a handy scanner is printed together with a text or the like key-inputted.

Such a handy scanner manually scans a two-dimensional image original such as a sketch to be embroidered at a constant direction at a constant speed. Further, such a handy scanner is generally a line sensor for reading a one-dimensional image while performing a main scan, and a movement in the sub-scanning direction when a two-dimensional image original to be read is manually scanned in the sub-scan direction. And an encoder for detecting the quantity. The main scanning is, for example, sequentially reading out a one-dimensional image obtained from such a line sensor pixel by pixel. On the other hand, the sub-scanning is, for example, in the case of such a handy scanner, manually scanning the line sensor in a certain direction as described above.

[0005]

However, during the manual scanning of the two-dimensional image original by the handy scanner as described above, the speed of the manual scanning sometimes becomes unstable. Therefore, the manual scanning speed sometimes exceeds the upper limit scanning speed. If the scanning speed exceeds the upper limit scanning speed of the handy scanner, reading failure will occur, causing a problem such as data loss in the data of the two-dimensional image being read. If such a reading failure occurs, the target two-dimensional image document must be read again.

The upper limit scanning speed is determined, for example, by the reading time per one-dimensional image of the line sensor incorporated in the handy scanner and the frequency of sub-scanning, that is, the density (resolution) per unit length. Alternatively, the upper limit scanning speed may be determined by the reading speed at which a one-dimensional image is read from the line sensor pixel by pixel and the total number of pixels in one line.

[0007] Such overspeed of the handy scanner in the manual scanning becomes a problem especially when the handy scanner has a low upper scanning speed. For example, when the handy scanner has a high resolution, it is necessary to transfer a large amount of read image data, which may reduce the upper limit scanning speed. In such a handy scanner, manual scanning at the time of reading a two-dimensional image manuscript requires skill and requires considerable practice.

The present invention has been made to solve the above-mentioned problems of the prior art.
By scanning the two-dimensional image original in a certain direction and compensating for the missed reading due to the over-speed of the manual scanning speed, which occurs when the two-dimensional image original is read, within such a range, a handy scanner of this kind is provided. SUMMARY OF THE INVENTION It is an object of the present invention to provide a manual scanning speed overcompensation device capable of reducing read failure in the above-mentioned and re-reading accompanying the read failure.

[0009]

According to the present invention, when a handy scanner is manually moved to sequentially scan a two-dimensional image original line by line in the moving direction, the two-dimensional image original is read. A manual scanning speed detection circuit for detecting the manual scanning speed; an over speed judgment value memory for holding an over speed judgment value corresponding to the upper limit scanning speed of the manual scanning speed at which the two-dimensional image original cannot be read; And a speed determination circuit for determining whether or not the manual scanning speed is a speed over which is equal to or higher than the upper limit scanning speed according to the over speed determination value, and a two-dimensional image read while scanning is stored 2 The one-dimensional image of the scanning line in front of the three-dimensional image memory and the one-dimensional image of one line determined to be overspeed by the speed determination circuit Or one of its rear scan line
The above object is achieved by including at least one of the two-dimensional image and a corrected image generation unit that performs correction generation based on the one-dimensional image stored in the two-dimensional image memory.

[0010]

According to the present invention, in the speed over which occurs in the manual scanning of the handy scanner as described above,
It was discovered that there are many overspeeds that occur only for a relatively short time. In the present invention, when the generated overspeed is in a relatively short time, the missed reading due to the overspeed is compensated within a possible range.

For example, in the case where the missed reading caused by such speed over is only the image read by the main scanning of one line or several lines, and the occurrence of such speed over is relatively short time. There is. In such a case, the image that was missed in this way,
Even if correction and generation are performed based on an image read in front of the image and an image read in the image behind it, there is generally no problem. By compensating for the missed reading due to overspeed in such a possible range, it is possible to reduce the reading failure in such a handy scanner and the rereading associated with the reading failure.

FIG. 1 is a block diagram showing the gist of the present invention.

In FIG. 1, the main components of the manual scanning speed overcompensation device of the present invention are as follows: manual scanning speed detection circuit 14, overspeed judgment value memory 17, speed judgment circuit 18, and two-dimensional image memory 12. And the corrected image generation unit 19.

The manual scanning speed detection circuit 14 sequentially performs main scanning while sub-scanning a two-dimensional image original in a certain direction by manual scanning of a handy scanner, so that the manual operation when the two-dimensional image original is read. The scanning speed is detected at any time. In general, a handy scanner uses a pulse signal in synchronization with, for example, the movement amount of the manual scanning in order to synchronize the sub-scanning as described above according to the manual scanning during reading of a two-dimensional image original. An encoder and the like for outputting is provided. Therefore, the manual scanning speed detection circuit 14
Can use the signal output from such an encoder. For example, when the encoder generates a pulse signal according to the movement amount of the hand scan of the handy scanner, the manual scan is performed by measuring the generation interval of the pulse signal or the frequency of the generated pulse signal. It is possible to detect the speed at any time.

The overspeed judgment value memory 17 holds an overspeed judgment value corresponding to the upper limit scanning speed of the manual scanning speed at which the two-dimensional image original cannot be read. In addition, the speed determination circuit 18
Means that the manual scanning speed detected by the manual scanning speed detecting circuit 14 at any time is the over speed judgment value memory 1
It is determined at any time whether or not the speed over is equal to or higher than the upper limit scanning speed according to the over speed determination value held in 7.

The two-dimensional image memory 12 stores the two-dimensional image read in the main scanning and the sub-scanning as described above. The two-dimensional image memory 12 may store the read two-dimensional image by a bitmap method, for example. In the case of such a bit map method, for example, not only the image data of each pixel obtained during the reading performed while performing the main scanning or the sub scanning can be sequentially stored, but also the corrected image can be stored. In response to a read request from the generation unit 19, the image data of each pixel of the one-dimensional image of each main-scanned line can be sequentially output to the corrected image generation unit 19 relatively easily. it can.

The corrected image generating unit 19 converts the one-dimensional image of the main scanning line determined to be overspeed by the speed determining circuit 18 into the main scanning line 1 in front of it.
The correction generation is performed based on the one-dimensional image stored in the two-dimensional image memory 12 of at least one of the two-dimensional image and the one-dimensional image of the main scanning line behind the two-dimensional image. The corrected image generation unit 19 may, for example, use a one-dimensional image of an adjacent front or adjacent rear main scanning line,
A one-dimensional image lost due to overspeed may be corrected and generated based on at least one one-dimensional image. Alternatively, for example, when the speed of the adjacent main scanning line of the adjacent front side or the adjoining rear side of the main scanning line also exceeds the speed, the corrected image generation unit 19 does not overspeed the line of the main scanning line ahead of the main scanning line. The correction generation may be performed based on at least one of the one-dimensional image of the one-dimensional image and the one-dimensional image of the line of the main scanning in the rear.

FIG. 2 is a diagram showing the operation of the present invention.

In FIG. 2, reference numeral P0 is an example of a two-dimensional image original read by a handy scanner used by the manual scanning speed overcompensation device of the present invention. For example, the two-dimensional image original P0 is manually scanned by a handy scanner from the upper side to the lower side. In addition, by manually scanning from above to below,
The three-dimensional image document P0 is sub-scanned from the upper side to the lower side.
At this time, the line sensor built in the handy scanner is arranged in the left-right direction in FIG. 2, and this direction is the main scanning direction.

In FIG. 2, the two-dimensional image original P
To read all 0s, use the handy scanner
Manually scan from points V0 to V4. The point V is added to the two-dimensional image original P0 read in this way.
The pattern D0 is drawn in the range from 1 to the point V3.

During the reading of the two-dimensional image original P0, it is assumed that, for example, overspeed occurs in several main scanning lines in the section before and after the point V2.

When the speed over is generated at the point V2, the read two-dimensional image is conventionally as shown by the symbols P1 and P2 in FIG. For example, in the two-dimensional image P1, for the main scanning line that has exceeded the speed,
The vertical direction has been shortened by the amount that was missed when the speed was exceeded. On the other hand, in the two-dimensional image P2,
A blank image is inserted in the main-scanning line in which the speed has been exceeded.

On the other hand, in the present invention, even when the speed is exceeded in the section before and after the point V2 as described above,
As shown in the two-dimensional image P3 in FIG. 2, the missed reading due to the speed over can be compensated for within a possible range. For example, as in the conventional two-dimensional image P2, even a blank portion in the section before and after the point V2 can be corrected using, for example, the one-dimensional image of the main scanning line before and after the point V2. In the two-dimensional image P3 of FIG. 2, as an example, the portion of the main scanning line immediately before the overspeed occurs in the portion where the overspeed has occurred and the image has been missed. By linearly interpolating the two-dimensional image and the one-dimensional image of the main scanning line immediately after which the overspeed has not occurred on the two-dimensional image, the image that has been missed due to the overspeed is corrected and generated. I am able to.

It should be noted that the present invention is not limited to such a linear interpolation, and for example, the same speed as that of the one-dimensional image of the main scanning line immediately before that at which the speed is not exceeded can be used. It is also possible to correct and generate an image that has been missed due to overshooting. Alternatively, the image may be the same as the one-dimensional image of the main scanning line immediately after the speed is not over, and the image that has been missed due to the overspeed may be corrected and generated.

As described above, according to the present invention, the manual scanning speed becomes excessive during the manual scanning of the handy scanner as described above, and accordingly, the overscanning in the image reading occurs. Even if it is possible, it is possible to compensate within a possible range, and it is possible to reduce re-reading and the like due to a reading failure.

[0026]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 3 is a block diagram showing the configuration of an embodiment of an embroidery data generation device to which the present invention is applied.

In FIG. 3, the embroidery data generation device 10 of the present embodiment handyes a pattern D of a plurality of rough pictures P drawn corresponding to each embroidery thread of multicolor sewing performed while changing different embroidery threads. The scanner 40 reads the data and performs a series of internal processes to generate embroidery data used in a sewing machine having an embroidery function. The generated embroidery data is written in the memory card 68. The embroidery data written in the memory card 68 is read by a predetermined memory card I / F (interface) built in the sewing machine, not shown. The sewing machine embroiders the pattern D of the rough sketch P by multicolor sewing based on the thus read embroidery data.

The embroidery data generator 10 is mainly composed of a handy scanner 40 and an embroidery data generator main body 11. The main body 11 of the embroidery data generator mainly includes a scanner control circuit 44 and a CPU.
46, ROM 48, RAM 52, liquid crystal display controller 54, VRAM (video random access memory)
y) 56, liquid crystal display device 58, and key switch 62
, Memory card I / F 64, connectors 42 and 6
6 and the system bus 60. The system bus 60 is used for transferring data and the like among the scanner control circuit 44, the CPU 46, the ROM 48, the RAM 52, the liquid crystal display controller 54, the key switch 62 and the memory card I / F 64. Used.

The handy scanner 40 is controlled by the scanner control circuit 44, and manually scans the sketch P in a constant direction and at a constant speed to read the pattern D of the sketch P. is there. In such manual reading, after setting the degree of resolution with the setting switch 40b, scanning is performed manually while pressing the reading switch 40a. The reading range of the sketch P by the handy scanner 40 is a range of 50 mm × 50 mm, and this is read as an image of 100 pixels × 100 pixels. That is, one pixel is
The size is 0.5 mm x 0.5 mm. Each read pixel is "1 (black or predetermined color)" or "0 (white)"
There are two gradations. The image read in this way is stored in the RAM for each reading corresponding to each embroidery thread.
52 is read. In the RAM 52, the CPU
The values used in the program executed at 46 may be changed, for example, threshold values are also stored.

On the other hand, referring to FIG.
Stores a program executed by the CPU 46 for realizing the functions to which the present invention is applied. Further, the ROM 48 also stores various threshold values used in such a program.

The key switch 62 is the CPU.
The operation state is read out by the program executed at 46. The liquid crystal display controller 5
4 is accessed from the CPU 46 via the system bus 60. Further, the CPU 46 writes an image to be displayed on the liquid crystal display device 58 into the VRAM 56 via the liquid crystal display controller 54. The liquid crystal display controller 54 uses the VRAM 56 to perform the display in the bit map system.
Control eight.

FIG. 4 is a block diagram showing the internal structure of the handy scanner.

In FIG. 4, of the control circuit built in the handy scanner 40, a two-dimensional image original imaged by a line sensor built in the handy scanner 40 is scanned while performing main scanning and sub scanning. Read sequentially,
In addition, a block diagram of a control circuit for synchronizing the image signals VD that are serially output accordingly, particularly for generating a reference clock WG, a sub scanning synchronization signal ST, and a main scanning synchronization signal AU. It is shown. Further, a control circuit for performing a speed over display and other displays according to the present invention is shown.

In FIG. 4, the handy scanner 40 is used to obtain these clock signals and synchronizing signals.
An encoder 14a, a main scanning synchronization signal generation circuit 13,
It is provided with a sub-scanning synchronization signal generation circuit 14b, a reference clock generation circuit 14c, an over speed judgment value memory 17a, a warning speed judgment value memory 16, and a speed judgment circuit 18a.

First, the rotary shaft of the encoder 14a is rotated by a rubber roller that rotates while being pressed against the sketch P during manual scanning for reading the sketch P. In addition, according to the rotation amount of the rotary shaft, the encoder 14a
Outputs a pulse signal. Whenever the encoder 14a manually scans (sub-scans) the sketch T by 0.1 mm,
A pulse signal of 1 pulse is output.

The sub-scanning synchronization signal generation circuit 14b generates a sub-scanning synchronization signal which is synchronized with the photographing of the one-dimensional one-dimensional drawing P by the line sensor. The reading of the sketch P for one line is performed every 0.5 mm manual scanning (sub-scanning). Therefore, the sub-scanning synchronization signal generation circuit 14b outputs a pulse signal of the sub-scanning synchronization signal ST, which becomes one pulse every 5 pulses of the pulse signal output by the encoder 14a.

The main scanning synchronizing signal generating circuit 13 reads out an image of the line sensor for one line for each input of one pulse of the sub scanning synchronizing signal ST from the sub scanning synchronizing signal generating circuit 14b. The scan synchronization signal AU is output. As described above, the number of pixels read by the handy scanner 40 is 100 pixels per line. Therefore, the main-scanning synchronization signal generation circuit 13 is operated by the sub-scanning synchronization signal S.
Each time one pulse of T is input, the main scanning synchronization signal AU of 100 pulses is output. The main scanning synchronization signal AU
Is output to the line sensor and is also output to the embroidery data generator main body 11 which receives the image signal VD from the line sensor.

The reference clock generation circuit 14c outputs a reference clock WG having a constant cycle (constant frequency). The cycle of the reference clock WG corresponds to the upper limit scanning speed that can be read by manual scanning with the handy scanner. That is, the cycle of the reference clock WG is the same cycle as the sub-scanning synchronization signal ST when the manual scanning is performed at the upper limit scanning speed.

The overspeed judgment value memory 17a stores a threshold value corresponding to the upper limit scanning speed of the manual scanning speed of the handy scanner 40, that is, an overspeed judgment value.

The manual scanning speed is detected by the period of the sub-scanning synchronization signal ST output from the sub-scanning synchronization signal generation circuit 14b, that is, the length of the pulse interval time of the sub-scanning synchronization signal ST. In particular, the slowness of the manual scanning speed is grasped by the ratio of the cycle of the sub-scanning synchronization signal ST to the cycle of the reference clock WG output from the reference clock generation circuit 14c. Further, the determination as to whether the manual scanning speed at each time point exceeds the upper limit scanning speed is also made as a ratio of the cycle of the sub-scanning synchronization signal ST to the cycle of the reference clock WG.

Therefore, the overspeed judgment value memory 1
7a stores the ratio of the cycle of the sub-scanning synchronization signal ST to the cycle of the reference clock WG when the manual scanning speed reaches the upper limit scanning speed. In this embodiment, the overspeed judgment value memory 17a stores, for example, a numerical value of "100%". This value is
For example, if a margin for various measurement errors is provided, the numerical value may be, for example, about “110%”.

The warning speed judgment value memory 16 has a warning speed judgment corresponding to the warning speed provided with a predetermined margin with respect to the upper limit scanning speed of the manual scanning speed at which the sketch P cannot be read. The value is stored.

As described above, the slowness of the manual scanning speed at each time is grasped by the ratio (%) of the cycle of the sub-scanning synchronization signal ST to the cycle of the reference clock WG. Therefore, regarding the warning speed determination value stored in the warning speed determination value memory 16, the sub-scanning synchronization signal ST
A value is stored as a ratio (%) of the period of the above to the period of the reference clock WG. In the present embodiment, the value "150%" is held as the warning speed determination value.

The speed judging circuit 18a firstly receives the sub-scanning synchronizing signal ST and the reference clock WG which are inputted at any time.
The ratio (%) of the cycle of the sub-scanning synchronization signal ST to the cycle of the reference clock WG is calculated based on Further, the speed determination circuit 18a compares the ratio (%) thus obtained at any time with the over speed determination value (%) stored in the over speed determination value memory 17a, and outputs the warning determination value. The warning speed judgment value (%) stored in the memory 16a is compared.

That is, the speed determination circuit 18a first determines the speed over with respect to the upper limit scanning speed when the ratio obtained at any time as described above becomes smaller than the over speed determination value. The determination result is displayed and output to the red lamp 40r of "speed over display". The determination result is also transmitted to the main body 11 of the embroidery data generation device by an overspeed signal OV. The speed over signal OV is used by the corrected image generation unit 19 provided in the main body 11 of the embroidery data generation device as shown in FIG. The embroidery data generator main body 11 also includes the two-dimensional image memory 12 shown in FIG.
It is provided in the RAM 52.

On the other hand, the speed judgment circuit 18a displays a speed warning when the ratio obtained at any time as described above is smaller than the warning speed judgment value and larger than the overspeed judgment value. This speed warning display is to blink the green lamp 40g of "reading display" attached to the handy scanner 40.
Further, the speed determination circuit 18a is configured such that the user starts reading the sketch P and the sub-scanning synchronization signal generation circuit 14
When the pulse of the sub-scanning synchronization signal ST is input from b, the green lamp 40g for indicating the reading is continuously turned on during such reading, thereby displaying the reading.

It should be noted that the green lamp 40g for "reading display" and the red lamp 40 for "speed over display".
The lamp display made by r is as follows.

(1) While reading the sketch P at the manual scanning speed below the upper limit scanning speed and below the warning speed: "reading display" green lamp 40g continuously lit and "speed over display" red Turning off the lamp 40r (2) While reading the sketch P at the manual scanning speed that is equal to or higher than the warning speed and is slower than the upper limit scanning speed:
"In-reading display" Green lamp 40g blinks and "Speed over display" Red lamp 40r goes off "(3) At the above-mentioned manual scanning speed above the upper limit scanning speed (hence, the manual scanning speed is above the manual scanning speed) During reading of the above-mentioned rough sketch P: “Reading display” green lamp 40
Turning off g and turning on the red lamp 40r of "speed over display"

FIG. 5 is a time chart of signals output from the handy scanner 40.

In FIG. 5, there is shown a time chart of signals output from the handy scanner 40 to the scanner control circuit 44 via the connector 42. That is, a time chart of the reference clock WG, the sub-scanning synchronization signal ST, the main scanning synchronization signal AU, and the image signal VD is shown. Each of these signals
From the handy scanner 40 to the scanner control circuit 4
4 is a signal output to the No. 4.

First, the reference clock WG is 2.79.
It is a clock signal having a constant cycle (constant frequency) of mS.
The cycle of the reference clock WG corresponds to the upper limit scanning speed when manually scanning with the handy scanner. In particular, the period is the same as the main scanning period for one line corresponding to the upper limit scanning speed.

The sub-scanning synchronization signal ST is a signal for synchronizing the sub-scanning when the handy scanner 40 is manually scanned. That is, it is a signal that is sequentially output according to manual scanning and is output each time main scanning of an image of one line is started. On the other hand, the main scanning synchronization signal AU is a signal for synchronizing the image signal VD of each pixel to be main scanned when the handy scanner 40 manually scans. Therefore, the main scanning synchronization signal AU is output for each pixel of the image signal VD.

In FIG. 5, the reference clock WG
The period between the times t ₁ , t ₂ , t ₄ , and t ₅ at which is input is 2.79 mS, which are all equal.
Further, the manual reading speed of the handy scanner 40 during the period from time t ₃ to t ₆ is slower than the period from time t ₁ to t ₃ . Therefore, the time period from the time t ₃ to t ₆ is longer than the time period from the time t ₁ to the time t ₃ .

Further, in the interval at which the sub-scanning synchronizing signal ST is output, for example, in the period from time t ₁ to t ₃ or the period from time t ₃ to t ₆ shown in FIG. The image signal VD is output. Therefore, the image signal VD for 100 pixels is output, and 100 main scanning synchronization signals AU for synchronizing the image signal VD are output.

In FIG. 5, in any one pulse of the reference clock WG from time t ₁ to t ₂ , time t ₂ to t ₄ , and time t ₄ to t ₅ , a pulse of the reference clock WG is generated. Compared to the interval, the sub-scanning synchronization signal S
The pulse interval of T is longer (wider). For example, for one pulse of each of the sub-scan sync signal ST t ₆ from the time t ₁ from t ₃ and time t _3, when the pulse interval of one pulse of the reference clock WG and 100%, respectively, about 102% , About 199%.

Therefore, in the range from time t ₁ to t ₂ to t ₃ , the manual scanning speed is below the upper limit scanning speed,
Further, the speed is above the warning speed, the green lamp 40g blinks, and the red lamp 40r goes out. About time t ₂ ~
In the range of t ₃ to t ₅ to t ₆ , the manual scanning speed is less than or equal to the upper limit scanning speed and less than or equal to the warning speed,
The green lamp 40g continuously lights up, and the red lamp 40r
Turns off.

FIG. 6 is performed in this embodiment. It is a flow chart of embroidery data generation processing.

The embroidery data generation process shown in FIG. 6 is realized by the CPU 46 executing a program stored in the ROM 48.
Further, the threshold value used in the embroidery data generation process is set in the RAM 52 in advance.

In the flowchart of FIG. 6, first, in step 102, the hand-held scanner 40 reads the pattern D of the rough picture P created for each embroidery thread for each embroidery thread. Further, the data of the sketch P for each embroidery thread read in this way is stored in the RAM 52 separately for each embroidery thread. The process performed in step 102 is performed by a program described later with reference to FIG.

Next, at step 106, it is checked whether or not there is overlap between the designs of a plurality of sketches to which the present invention is applied. This duplication check is performed by the program described later with reference to FIG. The duplication check is performed by the CPU
It is realized as a program written in the ROM 48 and executed by the ROM 46. In addition, the step 1
The result of the duplicate check at 06 is set as the duplicate flag Fe.

Subsequently, in step 108, the result of the duplication check in step 106, that is, the presence or absence of duplication is determined. This depends on whether or not the duplication flag Fe is set. If it is determined in step 108 that there is no overlap, the process proceeds to the next step 110. On the other hand, if it is determined that there is overlap, the process proceeds to step 114.

In the step 110, the step 1
Sewing data for multicolor sewing embroidery is generated based on the rough sketch P read in 02 and 104. Further, in the following step 112, the sewing data generated in step 110 is written in the memory card 68.

On the other hand, when the process branches from step 108 to step 114, in step 114, first, "duplicate error occurs. Do you want to read again?"
Error display. Further, in the following step 118, the user who confirms the above-mentioned error display inputs and determines whether or not to perform rereading. Step 1
If it is input to read again at 18, the process branches to the front of step 102. On the other hand, if it is input that re-reading is not to be performed, the process ends abnormally and all processing is completed.

FIG. 7 is a flow chart of the rough image reading process performed in the embroidery data generation process of this embodiment.

The process shown in the flowchart of FIG. 7 is performed in step 102 of FIG. First, when performing the rough sketch reading process shown in FIG. 7, the rough sketch P to be read is prepared. The line sensor built in the handy scanner 40 is used to perform one-dimensional imaging and main scanning associated with the rough image P prepared in this manner.
While performing sub-scanning by manual scanning, the rough sketch P is read as a two-dimensional image.

First, in step 142 of FIG. 7, data for one line is read from the line sensor of the handy scanner 40. This read data is the R
It is stored in the AM 52 separately for each embroidery thread.

Subsequently, in step 144, it is determined whether or not the manual scanning speed detected by using the encoder 14a or the like is equal to or higher than the upper limit scanning speed. this is,
The cycle of the sub-scanning synchronization signal ST generated by the encoder 14a and the sub-scanning synchronization signal generation circuit 14b according to the manual scanning speed is stored in the over-speed judgment value memory 17a. The comparison with the upper limit scanning speed according to the overspeed judgment value is performed by the speed judgment circuit 18a.

If it is determined in step 144 that an overspeed has occurred, in the following step 148, the line number of the main scan in which the overspeed has occurred is set to the RA.
It is stored in a predetermined address of M52. After the step 148, or when it is determined in step 144 that the overspeed has not occurred, the routine proceeds to step 152.

In the step 152, the step 14
Whether all the reading of the rough sketch P as a two-dimensional image is completed by determining whether or not the line that has been subjected to the series of one-line reading processing performed in 2, 144 and 148 is the final line. Determine whether or not.
When it is determined in step 152 that the reading is not completed, the process branches to the front of step 142,
Further, the processing of the next line is continued. On the other hand, the step 1
If it is determined in step 52 that the reading has been completed, the process proceeds to step 154.

In the step 154, the step 14
By determining whether or not the line number of the main-scanning line in which the overspeed occurred stored in 8 is written, it is determined whether the overspeed has occurred in the process of reading the sketch P. If it is determined in step 154 that overspeed has occurred, the following step 158
Go to. On the other hand, if it is determined in step 154 that the overspeed has not occurred, after the series of processes of the sketch reading process shown in FIG. 7 is completed, the process is called to the sketch reading process. And return. For example, the rough sketch reading process is performed in the step 10
If it is called in step 2, after the rough sketch reading process, the process proceeds to step 106.

In the step 158, the step 1
It is determined whether or not there is valid read data after the line number while using the line number information of the main scanning line in which the speed overwriting has been written in 48.
That is, in step 154, it is determined whether or not there is a valid pattern after such a line number. If it is determined in step 158 that there is valid read data after the speed over has occurred, the process proceeds to step 162. On the other hand, when it is determined in step 158 that there is no valid read data after the speed over has occurred, the series of rough-image reading processing shown in FIG. 7 is ended, and the processing which called the rough-image reading processing is ended. And return. For example, the rough sketch reading process is performed in the step 1
If it is called in step 02, the process returns to the front of step 106.

In the step 162, image over-reading due to the speed over of the manual scanning speed by the handy scanner 40 is compensated. As described above with reference to FIG. 2, this is one of the main scanning lines in which the image is missed due to overspeed.
The one-dimensional image of the main scanning line in front of the two-dimensional image and the one-dimensional image of the main scanning line in the rear of the two-dimensional image are linearly interpolated to generate correction. After the end of step 162, the series of rough picture reading processing shown in FIG. 7 is finished, and the processing is returned to the processing that called the rough picture reading processing. For example, when the rough sketch reading process is called in step 102, the process returns to the front of step 106.

If the number of main-scanning lines for which the manual scanning speed is overspeed is more than a predetermined number of lines and the number of images to be corrected and generated is large, as described above. There is a possibility that the correction generation of the one-dimensional image of the missed line by the linear interpolation is insufficient. Therefore, the step 162 of the present embodiment is performed.
Then, when speed over has occurred in many main scanning lines, this warning is output to the user. That is, the comment “A large number of speed overlines occur” is displayed to the user.

As described above, step 1
Even if it is determined in 54 that an overspeed has occurred, in this embodiment, if it is determined in step 158 that there is no read data, image data correction generation in step 162 is not performed. This is because, for example, after the point V3 in FIG.
For the final part of the two-dimensional image original P0 in which 0 is a blank sheet, even if speed over occurs or the number of main scanning lines for which the speed over occurs increases, a blank ( This is because there is no problem by filling in the data with no pattern).

The determination as to whether or not there is valid read data after the occurrence of the speed over in step 158 may be performed as follows. That is, only when it is determined in step 158 that there is valid read data before the occurrence of speed over, and it is determined that there is valid read data even after occurrence of speed over,
The process shown in step 162 may be performed. By making the determination in this way, for example, in the range from the points V0 to V1 and the range from the points V3 to V4 of the two-dimensional image original P0 in FIG. This is because, when it is determined that the overspeed has occurred, the one-dimensional image of the main scanning line in which the overspeed has occurred can be made blank (no pattern). Also, in such a place,
Even if the number of main scanning lines, which is over the speed, increases, it does not cause any problem.

FIG. 8 is a flow chart of the duplication check performed in the embroidery data generation process of this embodiment. The process shown in the flowchart of FIG. 8 is performed in step 106 of FIG.

First, in the flowchart of FIG. 8, in step 132, the overlapping area between the patterns of a plurality of rough pictures corresponding to the embroidery threads is calculated. This is to select two sketches in order from the sketches corresponding to each embroidery thread,
This is to calculate the overlapping area of the patterns between the selected rough sketches. Further, the calculation of the overlapping area is performed by comparing corresponding pixels between the patterns of the target rough picture stored in the RAM 52 by the bit map method, and the corresponding pixels are both “1 (thing to embroider)”. In some cases, overlapping is performed, and the overlapping area is sequentially obtained for each continuous overlapping portion. In such overlapping area calculation, regarding the overlapping reduced diameter portion whose width is equal to or smaller than the overlapping area calculation threshold value, it is assumed that there is no overlapping, and the overlapping area is detected while detecting the overlapping between the two patterns of the rough sketch. The calculation is performed for each overlapping portion. The overlapping area calculation threshold value is stored in advance in the ROM 48 in the overlapping check of the first example.

Subsequently, in step 134, the overlapping area calculated for each overlapping portion in step 132 is
The overlap error is determined by comparing each overlap point with a predetermined threshold value. The threshold used at this time is a duplication determination threshold, and in the duplication check of the first example, the ROM 4 is used.
8 is stored in advance. In this embodiment, at least 1
When it is determined that the overlapping area of one overlapping portion is equal to or more than the predetermined threshold value, it is determined that there is an overlapping error between the target sketches.

If it is determined in step 134 that a duplication error has occurred, the duplication flag F is set in the following step 136.
Set e. After the step 136 is completed, the process returns to the step next to the step that called the process of the duplication check shown in FIG. 6, that is, the step 106. On the other hand, when it is not determined that there is a duplication error in the step 134, after the step 134, the step next to the step which calls the duplication check shown in the flowchart of FIG.
Return to 6.

As described above, in the present embodiment, when the rough sketch P is scanned in a fixed direction by the manual scanning of the handy scanner 40, when the rough sketch P is read, it is unnecessary to exceed the manual scanning speed. By reducing the occurrence,
It is possible to reduce the reading failure of the handy scanner 40 and the re-reading associated with the reading failure.

Although the present invention is not limited to this, according to the present invention, the handy scanner 4 is further provided.
The speed warning can be displayed by the above-mentioned green lamp 40g attached to No. 0, that is, the "reading display". While the green lamp 40g is gazing at the sketch P while scanning with the handy scanner 40,
It is placed at a position where the lighting state can be easily confirmed. Therefore, even while paying attention to the manual scanning of the handy scanner 40 at a constant direction and at a constant speed while reading the sketch P, the speed warning display of the green lamp 40g (continuous lighting or blinking lighting). Therefore, it is possible to prevent the occurrence of the above-described manual scanning speed excess.

Further, in the present embodiment, such a speed warning display can alert the user to the manual scanning speed not to exceed the speed, and even if the manual scanning speed exceeds the speed. , The extent of the speed over can be suppressed. That is, for example, even if the speed is exceeded, it is possible to reduce the number of main scanning lines that are overspeed. As a result, even if such speed over occurs, it is possible to increase the number of things that can compensate for the manual scan speed over to which the present invention is applied.

In the present embodiment, the manual scanning speed overcompensation device in the embroidery data generation device 10 is used, but it goes without saying that the present invention is not limited to this. That is, the manual scanning speed over-compensation apparatus of the present invention compensates for the occurrence of speed over exceeding the upper limit scanning speed in the manual scanning of the handy scanner, and the two-dimensional image original is fixed by the manual scanning. The same can be applied to a device using a handy scanner that reads while scanning in the same direction.

As a secondary point, in this embodiment,
When multicolor sewing is performed by performing embroidery of a predetermined pattern with different embroidery threads, it is possible to detect overlapping points between different patterns with different embroidery threads, and It is possible to prevent thread breakage that may occur at such overlapping points and to further improve the quality of the finished embroidery.

[0086]

As described above, according to the present invention,
While a two-dimensional image original is scanned in a certain direction by manual scanning by a handy scanner, the over-reading due to the speed over of the manual scanning speed that occurs when reading the two-dimensional image original is compensated for within a possible range. By doing so, it is possible to obtain an excellent effect that it is possible to reduce the reading failure in such a handy scanner and the rereading associated with the reading failure.

[Brief description of drawings]

FIG. 1 is a block diagram showing the gist of the present invention.

FIG. 2 is a diagram showing the operation of the present invention.

FIG. 3 is a block diagram showing a configuration of an embroidery data generation device according to an embodiment of the present invention.

FIG. 4 is a block diagram showing a control configuration of a handy scanner used in the above embodiment.

FIG. 5 is a time chart of signals of a connecting portion between the handy scanner and the main body of the embroidery data generating device in the embodiment.

FIG. 6 is a flowchart showing an embroidery data generation process performed in the embodiment.

FIG. 7 is a flowchart showing a sketch reading process performed during the embroidery data generation process.

FIG. 8 is a flowchart showing a duplication check process performed during the embroidery data generation process.

[Explanation of symbols]

10 ... Embroidery data generation device 11 ... Embroidery data generation device main body 12 ... Two-dimensional image memory 13 ... Main scanning synchronization signal generation circuit 14 ... Manual scanning speed detection circuit 14a ... Encoder 14b ... Sub scanning synchronization signal generation circuit 14c ... Reference clock generation Circuit 16 ... Warning speed determination value memory 17, 17a ... Over speed determination value memory 18, 18a ... Speed determination circuit 19 ... Corrected image generation unit 40 ... Handy scanner 40a ... Read switch 40b ... Setting switch 42, 66 ... Connector 44 ... Scanner Control circuit 46 ... CPU 48 ... ROM 52 ... RAM 54 ... Liquid crystal display controller 56 ... VRAM 58 ... Liquid crystal display device 60 ... System bus 62 ... Key switch 64 ... Memory card I / F 68 ... Memory card P ... Draft D ... Design t ₁ to t ₆ ... time

Claims (1)

[Claims] 1. A manual for detecting a manual scanning speed when the two-dimensional image original is read by sequentially scanning the two-dimensional image original line by line by moving the handy scanner manually. A scanning speed detection circuit, an over speed judgment value memory that holds an over speed judgment value corresponding to an upper limit scanning speed of the manual scanning speed at which the two-dimensional image original cannot be read, and the detected manual scanning speed is A speed determination circuit for determining whether or not a speed over which is equal to or higher than the upper limit scanning speed according to the over speed determination value; a two-dimensional image memory for storing a two-dimensional image read while scanning; The 1-dimensional image of one line determined to be overspeed by the circuit is converted into
A two-dimensional image or a one-dimensional image of a scanning line behind the two-dimensional image, and a corrected image generation unit that performs correction generation based on the one-dimensional image stored in the two-dimensional image memory. Manual scanning speed over compensation device.