JPS6152716B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention provides a method for stitching a desired stitch pattern among a plurality of types of stitch patterns according to position data for determining the relative position of a vertically movable needle and a work cloth. The present invention relates to an electronically controlled sewing machine for manufacturing, and particularly to an electronically controlled sewing machine equipped with an arithmetic and control device for calculating and creating position data.

PRIOR ART Various methods have been proposed as position data generation methods for electronically controlled sewing machines, and these methods can be broadly classified into two types of data generation methods. One data generation method is to store position data regarding a desired stitch pattern in advance in a static storage device, and read the position data from the storage device in synchronization with the sewing machine operation to generate the data. Tokukai Akira
An example of this is the generation method disclosed in Publication No. 50-37554. Other data generation methods store control signals in advance in a static storage device in order to calculate and create each position data, and have the arithmetic and control device perform comparison calculation operations in accordance with the control signals in synchronization with the sewing machine operation. The applicant previously filed an application for Japanese Patent Application Laid-Open No. 1986-54 as a device that creates data and belongs to this generation method.
Examples include generation systems disclosed in Japanese Patent Application Laid-open No. 26153 and Japanese Patent Application Laid-open No. 54-29244. The present invention belongs to the latter data generation method and relates to an improvement of the techniques described in the above two applications.

The data generating device of the above application includes a plurality of address groups consisting of a large number of mutually different addresses, and a pattern code signal representing a stitch pattern (or a pattern code signal for each stitch in the pattern) is sent to one predetermined address in each address group. a storage device that stores a stitch formation order code signal representing the formation order), and a timing code signal that changes in relation to the formation of each stitch in the desired stitch pattern (or a pattern representing the desired stitch pattern); The pattern code signal (or stitch formation order code signal) in the designated address is read out by sequentially specifying each address in one address group of the enabled storage device at high speed in response to the specified address (code signal). A retrieval counter, and a latch means for holding the counted contents of the retrieval counter when the read code signal matches a pattern code signal (or the timing code signal) representing a desired stitch pattern, the latch means The contents held in the means are used as position data. The search counter is capable of specifying all addresses in the enabled address group within one vertical movement period of the needle, and the contents of the search counter are for each stitch in the range where stitches can be formed. It corresponds to the formation position. However, the pattern code signal (or stitch formation order code signal) is stored in the address of the storage device specified by the count contents of the retrieval counter other than the specific count contents used as position data. Therefore, the addresses in the storage device were not used efficiently, and the addresses were in a blank state.

Purpose The present invention has been made in view of the above circumstances, and its first purpose is to provide an electronically controlled sewing machine equipped with a data generator that can efficiently use a storage device to calculate and create position data. A second object of the present invention is to provide an electronically controlled sewing machine equipped with an arithmetic control device having a configuration suitable for calculating and creating position data. Another object is to provide an electronically controlled sewing machine equipped with a data generator capable of generating position data quickly and accurately, and other objects will become clear from the description of embodiments of the invention. .

The present invention provides (1) a pattern selection device that is provided to select a desired stitch pattern from a plurality of predetermined types of stitch patterns, and that generates a pattern code signal corresponding to the selected pattern; and (2) a plurality of addresses for storing a pattern code signal corresponding to each pattern and a stitch formation order code signal representing the formation order of each stitch constituting the pattern as a set, and a static memory device that stores a set of signals in a predetermined order; (3) a timing code signal whose contents change in synchronization with the vertical movement of the hand; and sequentially specifying each address of the static memory device. (4) an arithmetic circuit that performs arithmetic operations to generate an address signal that changes for each stitch, and a count signal that progresses within a countable range that corresponds to a predetermined stitch forming range; calculation by an arithmetic circuit at a frequency determined so as to sequentially designate all addresses of the static storage device within one vertical movement period and to progress the counting signal over a countable range within the one vertical movement period; An oscillator provided to generate an operation timing clock signal and (5) compare the pattern code signal at a specified address in the static storage device with the pattern code signal from the pattern selection device and simultaneously specify the pattern code signal. performs a first determination operation of comparing the stitch formation order code signal of the address specified with the timing code signal to determine whether both code signals match, and progressively increments the content of the count signal. A second determination operation is performed in relation to the address signal change operation in order to determine whether or not the address signal is to be changed, and an arithmetic circuit is instructed to perform a progressive operation of the count signal according to the determination result of the second determination operation. and (6) a temporary memory that temporarily stores the counting signal when it is determined by the first determining operation that both code signals match, and rewrites the stored content each time it is determined that the two code signals match. and a storage device;
The contents of the temporary storage device are generated as position data.

In the present invention, the arithmetic circuit is configured to generate the count signal separately from the address signal of the static storage device, and each address of the static storage device does not correspond to the count signal and is not used as position data. Since the counting signal can be advanced without changing the address signal, a set of pattern code signal and stitch forming order code signal can be efficiently stored in each address of the static storage device, and the counting signal as position data can be stored efficiently. Signal search and hold operations (temporary storage operations) can be performed at high speed. Since the discrimination control circuit is configured to prohibit the supply of data rewrite command signals to the temporary storage device while progressing the count signals that are not used as the position data, the temporary storage operation of unnecessary count signals is prevented. It is possible to accurately generate a count signal as position data. Furthermore, since the configuration of an electronically controlled sewing machine can be easily adapted so that the calculation operation of the arithmetic circuit and the comparison and discrimination operation of the discrimination control circuit are performed within the central processing unit that controls various operations of the electronically controlled sewing machine, Various effects can be obtained by the present invention, such as making it possible to simplify the size of the control sewing machine and centrally control the operation of the sewing machine.

Embodiment In FIG. 1 showing the external appearance of a sewing machine to which the present invention is preferably applied, a horizontal bracket arm 5 has a head 6 and a pillar part 7 at both ends thereof, and the lower end of the pillar part is connected to a base part. Supported by 8.

On the front surface of the bracket arm 5, there is a push button 1 for selecting a desired stitch pattern from among a plurality of predetermined stitch patterns (six types in this example).
1 and a display board 12 on which images of the six types of stitch patterns described above are posted. One light emitting diode 13 is arranged above each stitch pattern. A needle bar is provided within the head 6 so as to be able to move vertically and oscillate laterally, and the needle 3 is attached to the lower end of the needle bar. A feed dog 4 is provided to impart a feed movement to the work cloth pressed by a presser foot (not shown), and the feed movement is controlled by a known feed adjuster operatively connected to the feed dog 4. . In this embodiment, the relative position of the needle 3 and the work cloth is determined according to the lateral swing position of the needle 3 and the adjustment position of the feed adjuster. A push button 21 is disposed at the lower right portion of the head 6, and the sewing machine is configured to alternately start and stop by operating the push button.

Next, the configuration of the data generator and drive device in the sewing machine of this embodiment will be explained with reference to FIGS. 2 and 3. The pattern selection device 22 shown in FIG. A pattern code signal corresponding to the pattern is generated, and the pattern code signal is supplied to the pattern display device 14. The pattern display device 14 has 6 devices provided corresponding to each pattern.
The light emitting diode 13 includes a plurality of light emitting diodes 13, and is configured to selectively light up the light emitting diodes 13 in response to a pattern code signal. Timing pulse generator 3 placed on the main shaft of the sewing machine (not shown)
Reference numeral 1 is configured to generate one timing pulse for each vertical movement of the needle 3, and is for synchronizing the data generation operation and the sewing machine operation, which will be described later. The timing pulses are counted by a stitch number counter 32, and the counter 32 is configured to generate a timing code signal having contents corresponding to the number of supplied pulses. The total number of stitches memory 33 stores a total number code signal representing the total number of stitches constituting each pattern, and outputs the total number code signal in response to the pattern code signal. and the timing code signal are compared in a comparator circuit 34, and when both code signals match, the comparator circuit 34 outputs the stitch number counter 3.
2. A reset signal is supplied for resetting 2.

The pattern code signal CS1 from the pattern selection device 22 and the timing code signal CS2 from the stitch number counter 32 are supplied to the needle position data generation device 41 and the feed data generation device 61 to control the data generation operation. The needle position data generator 41 includes a needle position counter control circuit 42 and a needle position data counter 4.
3. Consists of a latch 44 for needle position data;
The send data generator 61 is composed of a send counter control circuit 62, a send data counter 63, and a latch 64 for send data. A needle position actuator 4 is used to determine the lateral swing position of the needle 3.
5 is operatively connected to the needle 3, and a drive signal to the actuator 45 is output from a needle position drive control circuit 46. The drive control circuit 46 is connected to a latch 44 which is stored as needle position data DN.
The generation of drive signals is controlled according to the contents of
Since its circuit configuration is already known, its explanation will be omitted. A feed actuator 65 is also operatively connected to the feed adjuster 65 for determining the adjustment position of the feed adjuster connected to the feed dog 4, and a feed drive control circuit 66 is stored in the latch 64 as feed data DF. It is configured to generate a drive signal and apply it to the actuator 65 according to the content. Since the configuration of the control circuit 66 related to this feeding is also well known, its explanation will be omitted.

Since the needle position counter control circuit 42 and the feed counter control circuit 62 have the same configuration, the circuit configuration will be explained using the needle position counter control circuit 42 as an example.

As shown in FIG. 4, the needle position counter control memory 71 contains, at each address, a pattern code signal related to one of the six types of stitch patterns, and a stitch formation order representing the formation order of each stitch constituting the pattern. In this embodiment, the semiconductor read-only memory stores the code signal as a pair with the code signal.
It is used as 1. The address of the memory 71 is specified by the search counter 72, and the pattern code signal and stitch formation order code signal within the specified address are individually supplied to one input section of the comparison circuits 73 and 74, and the pattern selection device The pattern code signal CS1 from 22 and the timing code signal CS2 from stitch number counter 32 are compared individually. Comparing circuits 73 and 74 are configured to output a high-level matching signal when both input code signals match. AND circuit 75
receives output signals from comparison circuits 73 and 74 as well as an output signal from a comparison circuit 75 (described later) via an inverter 76, and when the output signal of the AND circuit 77 rises from low level to high level, The one-shot multivibrator 78 is triggered in response to the rise of the signal and outputs a constant width pulse signal (latch signal LP) to the latch 44 for needle position data. Each time the latch 44 receives the latch signal LP, it is possible to rewrite the stored contents to the input data, that is, the counted contents of the hand position data counter 43.

The search counter 72 receives clock pulses from an oscillator 79 via a tri-state buffer 80, counts the number of clock pulses and generates an output signal corresponding to the number of pulses, and the output signal is sent to the needle position counter. It is supplied to the control memory 71 as its address signal and also to the comparison circuit 7.
5 is supplied to one of the input sections. Further, the search counter 72 is capable of counting so that the addresses of the control memory 71 can be specified sequentially from address (00) to address (1D), and after the count reaches the content corresponding to address (1D), the oscillator is activated. When a clock pulse is supplied from 79, the count is reset and the count changes to correspond to address (00). The hand position data counter 43 receives a clock pulse from an oscillator 79 as a count pulse CP via a tri-state buffer 81, and its countable range is determined in accordance with a predetermined lateral swing range of the hand 3. The content of the count corresponds to each swing position of the hand 3 in the lateral swing range.
In this embodiment, the countable range of the needle position data counter 43 is set from (00) to (09) so that the needle 3 can be positioned at 10 swing positions.
The counter 43 is configured to repeatedly perform counting operations over its range. As shown in FIG. 5, the progressive control address memory 82 stores an address signal SPA representing a predetermined address of the needle position counter control memory 71 at each address, and the address of the memory 82 corresponds to the output signal from the needle position data counter 43. Specified according to CNA. The address signal SPA within the designated address of the progressive control address memory 82 is supplied to a comparator circuit 75 and compared with the output signal of the search counter 72, and when both signals match, the comparator circuit 75 outputs a high-level match signal. The matching signals from the comparison circuits 73 and 74 are prohibited from passing through the AND circuit 77. Further, the output signal of the comparator circuit 75 is supplied as a gate control signal to the tri-state buffers 80 and 81, and when the output signal is at a high level (in the output state of the match signal), the tri-state buffer 8
1 is opened to allow the clock pulse of the oscillator 79 to pass, and conversely, when the output signal is at a low level, the tri-state buffer 80 is opened to allow the clock pulse to pass. Depending on the comparison output signal, either the search counter 72 or the needle position data counter 43 is allowed to perform a counting operation. The frequency of the clock pulse from the oscillator 79 is determined by the address (00) of the control memory 71 by the search counter 72.
It is determined that the addressing operation from to address (1D) is performed at least once within one vertical movement period of the hand 3.

To explain the operation of this embodiment having the above configuration, there are six types of predetermined stitch patterns in this embodiment as shown in FIG. The operation of this embodiment will be explained by taking as an example the case where a cross-cut pattern is selected.

The pattern selection device 22 outputs a pattern code signal (0011) corresponding to the cross-cut pattern in connection with the selection of the cross-over pattern, and the pattern display device 14 outputs the light emitting diode 1 corresponding to the cross-over pattern according to the pattern code signal.
3a is lit continuously. In response to the pattern code signal (0011), the total number of stitches memory 33 outputs a total number code signal (0110) (signal representing decimal number "6") regarding the cross stitch pattern and supplies it to the input section of the comparison circuit 34. . In addition, for each selection of each stitch pattern, a stitch number counter 32, a needle position and feed data counter 43,
63, the search counter 72 and the counter in the feed counter control circuit 62 corresponding to the counter 72 are configured to be reset, respectively, and the needle position and feed data generators 41, 61 receive input from the pattern selection device 22. Pattern code signal CS1
(0011) and a timing code signal CS2 (0000) from the stitch number counter 32 are supplied, respectively. The subsequent operation of this embodiment will be explained with a focus on the needle position data generation operation.

The pattern code signal and timing code signal supplied to the needle position counter control circuit 42 are input to the input sections of comparison circuits 73 and 74, respectively, and the pattern code signal and the stitch formation order code are outputted from the needle position counter control memory 71. Each signal will be compared individually. Since the search counter 72 has been reset in connection with the pattern selection, the address of the needle position counter control memory 71 is designated starting from address (00), and the needle position data counter 43, which has been reset in connection with the pattern selection, is under progressive control. The address (00) of the address memory 82 is specified, and the address signal (0D) which is the content of the specified address is read out and outputted to the input section of the comparison circuit 75.
The output signal (00) is compared with the above address signal (0D) and the low level output signal is buffered
Apply it to enable it. As a result, the search counter 72 receives the clock pulse from the oscillator 79 and advances, and sequentially specifies the addresses of the control memory 71. When the search counter 72 specifies the address (0D) of the control memory 71, the comparison circuit 75 determines whether the two input signals match and generates a high-level output signal, and the buffer 81 receives the output signal and becomes valid. This allows the clock pulse to be supplied from the oscillator 79 to the needle position data counter 43. The needle position data counter 43 includes counters 43, 63, a search counter 72, and a feed counter control circuit 62 corresponding to the counter 72.
The counters therein are configured to be reset respectively, and the needle position and feed data generator 4
1 and 61 are supplied with a pattern code signal CS1 (0011) from the pattern selection device 22 and a timing code signal CS2 (0000) from the stitch number counter 32, respectively. The subsequent operation of this embodiment will be explained with a focus on the needle position data generation operation.

The pattern code signal and timing code signal supplied to the needle position counter control circuit 42 are input to the input sections of comparison circuits 73 and 74, respectively, and the pattern code signal and the stitch formation order code are outputted from the needle position counter control memory 71. Each signal will be compared individually. Since the search counter 72 has been reset in connection with pattern selection, when the address (0E) is specified as the address of the needle position counter control memory 71, the control memory 71 reads the pattern code signal (0011) and stitches from the specified address. The comparison circuit 7 outputs the formation order code signal (0000).
3 and 74 determine that both input signals match, and output high-level match signals to the AND circuit 77, and the AND circuit 77 receives the low-level output signal from the comparator circuit 75. The match signal is passed to cause the multivibrator 78 to generate a latch signal LP. The latch 44 temporarily stores the output (00) of the data counter 43 (an 8-bit binary signal in this embodiment) in response to the latch signal LP.

Thus, the needle position data DN regarding the first stitch of the cross stitch pattern (the stitch indicated by number (0) in FIG. 6) is set in the latch 44. At the same time, the feed data DF regarding the first stitch is also set in the latch 64. The data set in both latches 44 and 64 is the needle position and feed drive control circuit 4.
6 and 66, and the setting operations for the needle position and feed adjustment position according to the supplied data are carried out separately when the needle 3 is above and below the sewing machine bed. The supply timing of the drive signal is adjusted. If the cross stitch pattern is selected while needle 3 is resting above the sewing machine bed, needle 3 is positioned in accordance with the content of latch 44 (03).

The operation related to the pattern selection described above is performed at high speed, and after the operation is completed, the push button 21 is operated to start the sewing machine in order to sew the cross-stitch pattern, and the cross-stitch pattern is sewn as shown in FIG. When the first stitch is formed and the needle 3 reaches a predetermined position below the sewing machine bed, the timing pulse generator 31 generates one timing pulse and the stitch number counter 32
The timing code signal CS2 is changed to (0001) (content corresponding to "1" in decimal notation) by progressively changing the timing code signal CS2, and the comparison circuit 74 receives the code signal CS2 and performs a comparison operation. When the search counter 72 specifies the address (03) of the control memory 71 and reads out the contents of the pattern code signal (0011) and stitch formation order code signal (0001), the comparison circuit 72
3 and 74 both output matching signals and connect the AND circuit 7.
Supply to 7. On the other hand, the needle position data counter 43
The progressive operation of the hour hand position data counter 43 is associated with the progressive operation of the search counter 72, and the search counter 72 performs an addressing operation within the range from address (00) to address (0C) of the control memory 71. When the count content of counter 43 becomes (00) and the address specification operation is performed within the range from address (0D) to address (13), the content of counter 43 becomes (03) and the content of counter 43 becomes (03) and address (14) to address (17). When the address specification operation is performed within the range up to, the contents of the counter 43 is (06), and when either address (18) or address (19) is specified, the contents of the counter 43 is (08). In addition, the comparison circuit 75 and the progressive control address memory 82 are configured so that the contents of the counter 43 are set to (09) when an addressing operation is performed within the range from address (1A) to address (1C). Therefore, the counting operations of both counters 72 and 43 are associated. From this, when the search counter 72 specifies the address (03) of the control memory 71, the contents of the hand position data counter 43 are set to (00), and the contents are supplied to the input section of the latch 44. . The latch 44 temporarily stores the contents (00) of the counter 43 when the multivibrator 78 generates the latch signal LP in response to the coincidence signal from the AND circuit 77, and stores the stored contents in the second half of the cross-hatched pattern. is supplied to the needle position drive control circuit 46 as needle position data DN regarding the stitch (stitch indicated by number 1 in FIG. 6). At the same time, the feed data DF for the second stitch is also supplied from the latch 64, and the second stitch is formed at a position according to both data. The third pattern with a lattice pattern
The stitches after the sixth stitch are also formed as described above, and after the sixth stitch, which is the last stitch of the cross stitch pattern, is formed, a timing pulse is generated from the timing pulse generator 31 and the stitch number counter 32 is generated. When the timing code signal from Reset. This makes it possible to calculate and create the needle position and feed data for the first stitch of the cross-stitch pattern, and it is possible to continuously and repeatedly form the cross-stitch pattern in synchronization with the vertical movement of the needle 3. This stitch forming operation is stopped by pressing the push button 21.

In the first embodiment described above, the counting operation of the search counter 72 and the hand position data counter 43 is performed by the comparison circuit 75 and the progressive control address memory 82.
However, in the second embodiment shown in FIG. In the configuration of the second embodiment, the same parts as those of the first embodiment are given the same reference numerals.

The needle position counter control memory 91 shown in FIG. 7 stores a pattern code signal and a stitch formation order code signal at each address as shown in FIG. 8, and also stores a counting control signal. Progressive control counter 92 receives a clock pulse supplied from oscillator 79 through buffer 80 after a predetermined time delay by delay circuit 93, and presets counting control signal CTS from control memory 91 in response to the delayed clock pulse. In response to a clock pulse supplied from oscillator 79 through buffer 81, counter 92 decrements its count by one. The OR circuit 94 receives the count output signal of the counter 92 at its input, and outputs a low level output signal CTC when the output signal is "0" in decimal number, and outputs a low level output signal CTC when the output signal is a decimal number other than "0". It generates a high level output signal CTC, which acts in the same way as the output signal of the comparator circuit 75 in the first embodiment, and controls the opening/closing operation of the AND circuit 77 and the buffers 80 and 8.
Used to control the selection operation of 1.

To briefly explain the operation of the second embodiment having the structural differences described above, the count contents of the search counter 72 and the hand position data counter 43 are similarly related in the second embodiment, When the search counter 72 is specifying an address within the range from address (00) to address (0C) of the hand position counter control memory 91, the count content of the data counter 43 is set to (00). Thereafter, when the counter 72 specifies the address (0D) and reads the counting control signal (11) (signal corresponding to decimal number "3") from the control memory 91, the control signal is preset in the progressive control counter 92. The output signal of the counter 92 changes from decimal "0" to "3", the output signal of the OR circuit 94 changes from low level to high level, and the hand position data counter 43 receives three clock pulses from the oscillator 79. Then, the count contents are progressed from (00) to (03). Then, the search counter 72 again starts address specification from address (0D) and specifies up to address (13), and during the address specification operation, the count content of the data counter 43 is held at (03). When the search counter 72 specifies the address (14) of the control memory 91 and reads the count control signal (11), the data counter 43 receives three clock pulses and changes the count contents from (03) to (06) as described above. The contents of (06) are held while the counter 72 specifies addresses within the range from address (14) to address (17), and the counter 72 specifies address (18) to control counting. When the signal (10) (corresponding to decimal number "2") is read, the counter 43 advances from (06) to (08) and continues to read the signal (18) while the address (18) and (19) are specified. )
When the address (1A) is specified and the count control signal (01) (signal corresponding to decimal number "1") is read, the counter 43 changes the count contents from (08) to ( 09), and the count contents (09) are held while the address is specified within the range from address (1A) to address (1C). Therefore, the count contents of the search counter 72 and the needle position data counter 43 are related, and when the search counter 72 specifies the address (1D) of the control memory 91 and reads the count control signal (01), the count contents of the search counter 72 and the needle position data counter 43 are retrieved. The counter 43 receives one clock pulse and returns the count from (09) to (00). The search counter 72 returns the count from (1D) to (00) when receiving the next clock pulse.

Latch 44 the contents of needle position data counter 43
Since the operation for temporarily storing the data is performed in the same manner as in the first embodiment, its explanation will be omitted.

In the first and second embodiments described above, for convenience, the arithmetic circuit section is divided into a plurality of counters, and the discrimination control circuit section is divided into a plurality of comparison circuits and logic circuits. It is easy to replace the circuit section and the discrimination control circuit section with one microprocessor. The present invention is not limited to the embodiments, and those skilled in the art can make various changes without departing from the spirit thereof.

[Brief explanation of the drawing]

Fig. 1 is an external view of a sewing machine in which the present invention is suitably implemented, Figs. 2 to 5 show the first embodiment of the invention, and Figs. 2 and 3 show the first embodiment. FIG. 4 is a block diagram showing the configuration of the embodiment; FIG. 4 is an explanatory diagram showing the storage contents of the needle position counter control memory; FIG.
FIG. 6 is an explanatory diagram showing the storage contents of the progressive control address memory, FIG. 6 is an explanatory diagram showing the stitch patterns that can be sewn by the sewing machine, and FIGS. 7 and 8 show the second embodiment. , FIG. 7 is a block diagram showing the needle position counter control circuit in the second embodiment, and FIG. 8 is an explanatory diagram showing the stored contents of the needle position counter control memory. 3: Needle, 4: Feed dog, 11: Push button, 22:
Pattern selection device, 43: Needle position data counter, 4
4: Latch, 71: Needle position counter control memory,
72: Search counter, 73, 74, 75: Comparison circuit, 77: AND circuit, 79: Oscillator, 82: Progressive control address memory, 91: Hand position counter control memory, 92: Progressive control counter, 94: OR circuit, CS1 : Pattern code signal, CS2: Timing code signal, LP: Latch signal, DN: Needle position data, DF: Feed data, CTS: Counting control signal.

Claims (1)

[Claims] 1. Stitch formation in which the relative position of a needle that can move up and down and a work cloth is predetermined in order to form a desired stitch pattern among a plurality of predetermined types of stitch patterns. In a sewing machine that can be changed within a range, a pattern selection device is provided to select a desired stitch pattern from among the plurality of types of stitch patterns, and generates a pattern code signal corresponding to the selected pattern; It has a plurality of addresses for storing a pattern code signal corresponding to each pattern and a stitch formation order code signal representing the formation order of each stitch constituting the pattern as a set, and the set of both code signals is stored in advance. a static memory device that stores data in a predetermined order; a timing code signal whose contents change in synchronization with the vertical movement of the hand; and an address signal that changes to sequentially designate each address of the static memory device. , an arithmetic circuit operating to generate count signals whose content is progressive within a countable range corresponding to the stitch forming range; generating a timing clock signal for the arithmetic operation by the arithmetic circuit at a frequency determined to sequentially designate all addresses and advance the count signal over a countable range within one vertical movement period; an oscillator provided in the static storage device, which compares the pattern code signal at the address specified in the static storage device with the pattern code signal from the pattern selection device; A first determination operation is performed to compare the timing code signals to determine whether both code signals match, and the address is used to determine whether or not to advance the contents of the count signal. a discrimination control circuit that performs a second discrimination operation in relation to the signal changing operation, and instructs an arithmetic circuit to perform a progressive operation of the count signal according to the discrimination result of the second discrimination operation; and the first discrimination. and a temporary storage device which temporarily stores the counting signal when it is determined through operation that both code signals match, and can rewrite the stored contents each time it is determined that the two code signals match. An electronically controlled sewing machine characterized by being used as position data for commanding relative positions. 2. The discrimination control circuit includes an address storage device that stores an address signal representing a predetermined address of the static storage device in correspondence with the content of the count signal, and an address storage device that stores an address signal representing a predetermined address of the static storage device in response to the count signal. and an address determination circuit that compares the read address signal and the address signal determined by the arithmetic circuit to determine whether or not both address signals match, and it is determined whether or not the two address signals match. 2. The electronically controlled sewing machine according to claim 1, wherein the electronically controlled sewing machine commands a progressive operation of the counting signal at times. 3. Claims characterized in that the determination control circuit is configured to prohibit rewriting of the contents of the temporary storage device while the address determination circuit determines whether the two address signals match. The electronically controlled sewing machine according to item 2. 4. The arithmetic circuit selectively executes an operation of changing the address signal for addressing the static storage device and a progressive operation of the count signal according to the determination result of the address determination circuit. An electronically controlled sewing machine according to claim 2. 5. The electronic device according to claim 1, wherein the arithmetic circuit resets the content of the timing code signal when the timing code signal reaches content representing the total number of stitches in each pattern. control sewing machine. 6. The static storage device stores a count control signal for determining whether or not to advance the count signal together with a pair of the pattern code signal and the stitch formation order code signal at each address thereof, and performs the determination control. 2. The electronically controlled sewing machine according to claim 1, wherein the circuit determines the contents of the counting control signal and controls the progressive operation of the counting signal.