JPH0121550B2 - - Google Patents

Description

[Detailed description of the invention]

[Object of the Invention] (Industrial Application Field) The present invention relates to an automatic sewing machine, and in particular to a method for controlling an automatic sewing mechanism based on the sewing control data using a magnetic tape recording sewing control data and voice announcements. The present invention relates to an automatic announcement automatic sewing control sewing machine that reproduces a voice announcement to prompt the operator to perform necessary operations. (Prior Art) For example, in the automatic embroidery and yew-stitch sewing machine disclosed in Japanese Patent Application Laid-Open No. 56-43461, control data for various embroideries are inputted using magnetic tape such as an easy-to-handle cassette type. This makes it difficult to synchronize the operation of the sewing machine and reading data from the magnetic tape. Therefore, the read data is temporarily stored in static memory (RAM) inside the sewing machine. There are two relatively small capacity static memories for control data.
RAM is used, and control data from the magnetic tape is read in blocks alternately.
In the computer control sequence that immediately reads the data that has just been stored and commands the sewing machine control for reading and embroidery operation, the drive of the magnetic tape reader is also controlled at the same time. However, when looking at individual embroidery patterns, the stitching control appears to be continuous online control. A voice announcement is made every time a predetermined sewing progresses for operation guidance, such as a thread change instruction, and the voice signal is recorded on the magnetic tape next to the control data block. For example, control data 2D ₁ to 2D ₄ and voice announcement information 2V ₁ to 2V ₃ are recorded in blocks as shown in FIG. 1 on the magnetic tape 1.
Silent parts 2S ₁ , 2S ₂ , . . . are placed between these blocks to clearly distinguish the blocks. 2
V ₁ contains audio announcement information that should be played according to the announcement instruction in data 2D ₁ , 2V ₂ also contains audio announcement information that should be played according to the announcement instruction in data 2D ₁ , and 2V ₃ contains audio announcement information that should be played according to the announcement instruction in data 2D ₁ . Audio announcement information to be played in response to one announcement instruction is recorded, and these data recording sequences are arranged on the tape so that the progress of sewing based on the previously read data and the necessary announcements in accordance with the progress are approximately continuous. It is determined that playback will occur. FIG. 2 schematically shows the relationship between reproduction of the magnetic tape 1 and reproduction control based on reproduction data. Control data is sequentially read from RAM that stores magnetic tape playback data to control automatic stitching and sewing, but when announcement instruction data appears in the control data, the sewing machine is stopped, the tape is driven, and the announcement information section is played back. When that is finished, the next data is read again, and sewing control or tape reproduction is performed, and when reading of the RAM data is finished, the tape is driven this time to reproduce the next control data block and write it into the RAM. In order to avoid interruption of sewing when reproducing data and writing to RAM, two
Data is written to RAM alternately.
That is, for example, while data 2D ₁ is being written to RAM1, and while sewing is progressing by reading data sequentially from RAM1, the tape is played and data 2D ₂ is written to RAM2, and the data in RAM1 is read. When the read data instructs a voice announcement, the playback position of the tape is a silent section 2S ₂ between 2D ₂ and 2V ₁ . When all data 2D ₁ is read from RAM 1, the playback position is between 2V ₂ and 2D ₃ , and this time
Data 2D ₂ of RAM2 is read, while data 2D ₄ is reproduced and written to RAM1. In this type of data playback, RAM writing, announcement playback, etc., a block end code is recorded at the end of the block, but if you stop the tape at the same time as reading it, the remainder of the last bit of the code will be recorded next time. If the next playback data or audio start point is not clearly determined, or if there is a slight shift in the tape, the playback data or audio may become confused. In order to prevent this, as mentioned above, the silent part 2S ₁ of the predetermined length T,
2S ₂ ,... are placed between recording blocks, and in the playback process, after the block end code appears and after the announcement signal is interrupted, the tape is stopped after the tape has been fed for a predetermined length Ts shorter than the predetermined length T. That's what I do. According to this, the next data or announcement is played after the silence (T-Ts) after the start of tape playback, and no confusion occurs in data reading or announcement playback. (Problem to be Solved by the Invention) However, according to this, if the predetermined length Ts is short or if the pause (pause) in the voice announcement is long, the silent part of the announcement is silent between blocks. Part 2S _1,2
S ₂ , . . . is mistakenly recognized, tape playback is stopped, the end of the playback data or audio is confused, and the playback data or audio is also confused the next time the tape is played. It is an object of the present invention to prevent such confusion in tape playback processing, and also to allow the intervals in voice announcements to be of any desired length. [Structure of the Invention] (Means for Solving the Problems) The automatic sewing machine of the present invention includes a sewing control data block including identification data indicating when the next block is an audio signal block, and Ts described later.
A magnetic tape that has audio signal blocks that are a mixture of a background signal whose level fluctuates in a cycle shorter than that of the audio signal and an audio announcement signal, with silent intervals of a predetermined length T placed between the blocks; a magnetic tape that reproduces the magnetic tape. Reproducing device; Speaker; Data reading means for reading the data of the sewing control data block; Switching means for selectively supplying the reproduced signal of the magnetic tape reproducing device to the speaker and the data reading means; Silence of the reproduced signal given to the speaker is shorter than T.
Silent section detection means that generates an end signal when Ts continues; Memory means that stores the data read by the data reading means; Automatic sewing mechanism; Controls the automatic sewing mechanism based on the sewing control data in the memory means, and stores the identification data. control means for correspondingly setting the switching means to connect the speaker to the magnetic tape reproducing device, and setting the switching means to connect the data reading means to the magnetic tape reproducing device in response to the end signal; . (Operation) The magnetic tape reproducing device reproduces the information on the magnetic tape, the data reading means reads the data of the sewing control data block, and the memory means stores this data. The control means controls the automatic sewing mechanism based on the sewing control data in the memory means, and if there is identification data, sets the switching means to connect the speaker to the magnetic tape reproducing device in response to the identification data. The signal of the audio signal block on the tape is applied to the loudspeaker. Since this audio signal block is a mixture of a background signal and an audio announcement signal, the audio announcement is played along with the background sound from the speaker. The silent section detecting means generates an end signal when the silence of the reproduced signal given to the speaker continues for a period Ts shorter than T, and the control means responds to this end signal to cause the switching means to output data to the magnetic tape reproducing device. Set to connect the reading means. As a result, the data of the next block is supplied from the magnetic tape reproducing device to the data reading means, the data reading means reads the data of the sewing control data block, and the memory means stores this data. The control means controls the automatic sewing mechanism based on the sewing control data in the memory means, and when the identification data is present, the switching means is set to connect the speaker to the magnetic tape playback device, so that the audio signal block on the magnetic tape is A signal is applied to the speaker, which plays an audio announcement along with background sound. Similarly, reading of data on the magnetic tape, automatic sewing control, distribution of magnetic tape playback information, voice announcement, etc. are performed in accordance with the information on the magnetic tape. As described above, the magnetic tape carries a sewing control data block containing identification data indicating when the next block is an audio signal block, a background signal whose level fluctuates at a cycle shorter than Ts, and an audio announcement signal. Since it has a mixed audio signal block with a silent section of a predetermined length T between the blocks, even if the audio announcement is silent for more than Ts during playback of the audio information recording block, the background signal Therefore, there will be no signal between Ts. Therefore, the silent section detection means does not generate an end signal, and therefore the control means does not switch the switching means to the data reading means side. As a result, the voice announcement is not interrupted, so the operator can follow the voice announcement and perform appropriate operations, and information on the voice announcement block is not erroneously given to the data reading means. As a result, no erroneous signal is written to the memory means, so that malfunctions of the control means for controlling the automatic sewing mechanism and the switching means based on the data in the memory means do not occur. In other words, automatic sewing control errors do not occur. In a preferred embodiment of the invention, the background signal is a musical sound, preferably an instrumental sound. According to this, no strange signals appear during the announcement,
Rather, it will naturally notify the operator that the announcement is continuing, and is expected to have an emotional effect. Other objects and features of the invention will become apparent from the following description of embodiments with reference to the drawings. (Example) First, the information setting of the magnetic tape used in the automatic sewing machine of the present invention will be explained. First, as shown in FIG. 3, a mixing device 5 is connected to the magnetic tape recording device 4, a microphone 6 and a record player (or magnetic tape player) 7 are connected to the device 5, and each block 2V ₁ , 2V ₂ , 2V ₃ ... in the order in which they were recorded, while playing the recorded music on the player 7, with a non-recording loop of Ts or more between blocks (or a recording loop with no sound), and then playing the audio tape cassette 3. Record on tape. Next, as shown in FIG. 4, the cassette 3 is loaded into the magnetic tape playback device 8 connected to the microcomputer, and the magnetic tape playback device 9 receives the original control data of the blocks 2D ₁ , 2D ₂ , 2D ₃ . A magnetic tape cassette 10 in which data has been recorded with a blank space of Ts or more between blocks is loaded, and a microcomputer controls the energization and switching of the playback devices 8, 9, the magnetic tape recording device 11, and the switching circuit. Record on tape 1.
The switching order of the switching circuit 12 is input into the microcomputer in advance through an input operation on the operation board, and is set in the memory. For example, in order to record the data shown in FIG. 1, the switching order is a-a-c-c.
-a-c-a... When the microcomputer receives a recording instruction, it first activates the playback device 9 for playback, the recording device 11 for recording, and connects the switching circuit 12 to a connection (9 -11 connection), monitor the playback signal of playback device 9, and check if the low level is detected.
When the value exceeds Ts, the playback device 9 is stopped, the switching circuit 12 is connected to b (silent recording), and the time is counted. When the count value reaches a value equivalent to (T-Ts), the playback device 9 is activated again for playback, and the switching circuit 12 is connected as a to monitor the reproduced signal. If the playback signal remains at a low level for Ts, the playback device 9 is similarly stopped, the switching circuit 12 is connected to B, and time is counted. When the count value reaches a value equivalent to (T-Ts), the playback device 8 is stopped. regenerates and energizes the switching circuit 12.
connection (8-11 connection). Monitor the reproduced signal in the same way, and if the low level continues between Ts,
(T-Ts) The tape advances without recording, and then the specified switching is performed. In this way, control data and voice announcements are recorded on the tape 1 in blocks, with silence sections of a predetermined length T between the blocks. The recorded music of the player 7 is mixed and recorded as background music for the voice announcement. An embodiment of the present invention equipped with this tape 1 is shown in FIG. The central microcomputer 38 in the circuit shown in FIG. 5 is of a conventional type, and has a ROM 3 which is a fixed data memory in which it stores its own data processing calculation program.
Includes 8a. An embroidery data memory circuit 39, which should normally be included in this set of microcomputers, is shown collectively in a separate frame for the sake of convenience. The embroidery data memory circuit 39 has two embroidery data memory circuits each having a capacity of 256 bytes.
It has a first memory 40 and a second memory 41 consisting of RAM memory elements, and both of these memories include:
A write address counter 42 for specifying an address during writing, and a read address counter 43 for reading, as well as a switching command for controlling which side of the two memories 40 and 41 to be in an operating state and its state storage. It is equipped with a discriminator 44 that waits for the role of . A single flip-flop is sufficient for the discriminator 44, and it will be abbreviated as DRA in the explanation of the control sequence described later. Similarly, the first memory 40 is RAM0, the second memory 41 is RAM1, and the write address counter 42 is
WAC and read address counter 43
Like RAC, each is abbreviated in the flowchart explaining the control sequence. The output of the microcomputer 38 is sent to the data reader 34 through amplifiers 45 and 46, respectively.
The other is a cassette tape drive motor 47, and the other is a sewing machine motor 48 that drives the main shaft 36 of this sewing machine.
control. Two memories 40, which play an important role in the output operation of the microcomputer 38,
The operation output signals of the two coordinate components for each stitch based on the data read from the X-axis drive circuit 4
9 and as a control input to the Y-axis drive circuit 50. These two drive circuits 49 and 50 have the same configuration, and to explain it in terms of the Y-axis, among the positive and negative signals given as the operation output signal of the corresponding coordinate component and the numerical signal corresponding to the movement amount, signal
YDA is connected to the preset input PS of the down counter 51 and is set by its load input _L0 . Using an output pulse from a separately provided oscillator 52 as a clock pulse, a subtraction operation is performed via an AND gate 53, and the AND gate 53 is closed at the borrow output at the end of the subtraction.
The clock pulse passing through the AND gate 53 is
The pulse signal is applied to the input of the pulse distributor 56 through the one of the pair of AND gates 54 and 55 whose opening gates are controlled in accordance with the positive and negative signals YP and YM. The pulse distributor 56 is a known device that functions to switch the excitation phase according to the direction of rotation when the servo motor 21 is a pulse motor as in a general example. The output signal of the aforementioned synchronizing signal generator 37 and the operation signal of the start switch 35 are connected to the input side of the microcomputer 38. The memory 4 for the above two embroidery data is
A data input circuit 57 is connected to one of the terminals 0 and 41 for writing in accordance with the state of the discriminator 44. The control data for the embroidery pattern determines the recording length (number of blocks) on the magnetic tape according to the number of stitches that make up each pattern, but in this example, each stitch is represented by 3 bytes of data. One data block consists of a maximum of 84 stitches, and the required number of data blocks are connected to form one embroidery pattern data.On the magnetic tape, there is a no-signal zone (the first Data zones _{DATA (} 0
~n) are lined up, and a long IBG comes at the end to complete the data. This relationship is shown in FIG. However, the length of the last data zone DATA(n) will end up being shorter than 84 stitches in most cases. Each byte (hereinafter, this memory unit consisting of 8 bits is referred to as a word) is defined by its first bit as follows:
Used to identify whether each word is control data or numerical data. Regarding the structure of control data and numerical data, the first of the three words that correspond to one stitch is the control data, and the two following words are This is each numerical data that determines the amount of movement of the embroidery frame for the axis component and Y-axis component.The capacity of each numerical data is determined by the remaining 7 digits, as the first digit of the word is used for data identification as described above. It has a resolution of up to 127 steps. That is, assuming that one step is 0.1 mm, each stitch of one component can move a maximum of 12.7 mm. The numerical data for both the X and Y axis components does not have a sign bit that controls each movement direction, but the positive or negative of the X axis component is determined by the contents of the second bit of the control data for each stitch, and the 3 The positive and negative values of the Y-axis component, that is, the direction of movement, are indicated by the second one. Furthermore, because of the structure of the lower four digits of the control data, if the contents are all 0, the following two words are numerical data and form a normal stitch forming signal for one stitch. , if the contents of the lower four digits are other than zero, the control data at this time has the meaning of a special command signal. If the word of control data is not followed by normal numeric data, the contents of the two hexadecimal digits obtained by dividing the word of control data into four upper and lower four digits are shown in Figure 7. In the embodiment, [86] means the end of each data block, and [87] means the end of all data, that is, the end of embroidery control.
Although it is beyond the scope of this article, I will briefly explain when this signal is not used as a signal indicating the end of data. For example, there is a jump instruction.
Jump is not shown in this example, but
When a certain stitch is abnormally long compared to the length of one stitch of normal embroidery, the needle bar 2 is temporarily held in its raised position and only the embroidery frame continues to move. FIG. 7 shows that the data organization of each data block continues in this manner, and control data [87] appears in a certain word of the n-th block, forming one piece of embroidery data. In this case, [86] indicating the block separation is recorded at address No. 252, which is the 253rd word of each data block, and the words in the range 0 to 251 are recorded as described above. Data for 84 stitches can be stored in. Also, the data for each block is
It is stored alternately in two memories 40 and 41, RAM0 and RAM1.
1 has a capacity of 256 bytes each and fits this. Returning again to FIG. 5, the data input circuit 57 will be explained with reference to the timing chart of FIG. Simply put, the role of the input circuit 57 is that while the recording of the cassette tape 1 played back by the magnetic tape playback device 33 consists of bits arranged vertically, the input circuit 57 divides the bits into 8-bit blocks and converts them into micro-channels. computer 3
It is input to the I/O port of 8, and the contents of each bit are

It has a function to read while determining whether it is [0] or [1]. The data recording mode of the magnetic tape 1 reproduced by the magnetic tape reproducing device 33 corresponds to a binary signal depending on the magnitude of the signal recording width. That is, the read head 33a detects the rising and falling edges of the signal on the tape 1, and generates set and reset signals for the flip-flop 60 through the detection circuits 58 and 59, respectively.
By comparing the time widths of the set and reset operations of the flip-flop 60, the content of the binary signal of each bit can be determined.

Judge whether it is [0] or [1]. In order to measure this time width, the AND gate is opened at the Q output of the flip-flop 60.
element 61 and a similar AND element 6 depending on the output
2, a pair of counters 64 and 65 are provided for counting clock pulses from an oscillator 63.
At the time of reset by the output pulse of the monostable multivibrator 66, which generates a minute width pulse in response to the output of the rising edge detection circuit 59 of the tape recording signal, the counter 64 starts counting, and the output of the falling edge detection circuit 58 is At the same time as this counting stops, the counter 65 starts counting. Then, based on the next rising edge detection circuit output, both counters 64 in the comparator 67 at that time,
The comparison output that determines the size of the 65 count values is

[0]
Alternatively, it is inputted to the storage input terminal of the shift register 68 in the form of [1]. The rising edge detection signal that caused the shift register 68 to shift in this manner is also given as a counting input to another counter 69. The shift register 68 has a length of 8 digits, and the counter 69 also generates a count output in octal notation, so that every time the shift register 68 performs a shift operation eight times, the current shift register is 68
The contents of the read data are stored in the microcomputer 3.
8 is configured to be input. The end of the data block is detected by an end sensor 70 consisting of another monostable multivibrator. That is, a termination sensor 70 with a somewhat larger excitation pulse width is connected via an OR element 71 so that a trigger input can be given by the output of either side of the rising edge detection circuits 58 and 59 of the tape recording signal. As long as data is being read from the tape, the excitation state of the termination sensor 70 is maintained by repeated trigger inputs, and at the end of the data block or when all data has been read, the last excitation input is applied. When the operating range of the monostable multivibrator has elapsed, the I/O of the microcomputer 38
It gives a read completion signal to the port. Next, the operation of the above configuration will be explained using the flowchart shown in FIG. 9 and subsequent figures. In response to a start command, first, the contents of the discriminator 44 are initialized.
As mentioned above, the discriminator 44 is a flip-flop that selectively takes two operating states, and for convenience, these will be expressed as H and L below. Here, the initial setting is L. Next, start switch 3
5 is turned ON, and in response to the ON operation, the program moves to a data reading subroutine whose details are shown in FIG. In the data reading routine, the contents of the discriminator 44 are checked again, and since the first time is L as mentioned above, the affirmative judgment causes the discriminator 44 to be set to H.
Then, the write address counter 42 is set to address the first address of the first memory 40. Then, a drive signal is applied to the amplifier 45 to drive the cassette tape drive motor 47, and the process returns to the main routine of FIG. Therefore, the terminal sensor 70
Wait until the excitation operation of Accordingly, a drive signal is applied to the amplifier 46 to drive the sewing machine motor 48, and the process returns to the data reading subroutine. Then, when the content of the discriminator 44 is detected, since it was previously set to H, the content of the discriminator 44 is changed to L based on the negative judgment, and the first address of the second memory 41 is addressed. The write address counter 42 is set to the desired value, a cassette tape drive signal is issued in the same manner, and the process returns to the main routine. Then, it is detected whether the content of the discriminator 44 is L. In this case, the judgment is affirmative, and accordingly, the read address counter 43 is set to address the first address of the first memory 40. A word of the stored contents of the addressed portion is read from memory 40. If the content of the word is one that instructs a voice announcement (identification data), wait until the needle reaches the top dead center, stop the sewing machine motor, set the voice flag, and turn on the changeover switch (amplifier SW) 71. speaker 72
The cassette motor of the playback device is driven, and the output of the retriggerable mono-multivalve regulator 73 is monitored after a predetermined time has elapsed since the motor was driven. Since the playback device outputs a playback signal of the audio announcement block mixed with background music within the predetermined time due to the motor drive,
The output of the retriggerable mono multivibrator 73 becomes H, and background music and voice announcements are played from the speaker 72. The time limit of retriggerable mono multivibrator 73 is
Since it is set to Ts, when the reproduction of the audio information block is finished, the output of the retriggerable mono multivibrator 73 returns to L after Ts. When the output of the vibrator 73 returns to L,
The CPU switches the selector switch 71 to the data input circuit 57.
The flag is reset, the cassette motor is stopped, and the sewing machine motor is driven. and
Read data from RAM. If the data read from the RAM is not one that instructs an announcement (identification data), and the content is neither [86] nor [87] of hexadecimal, the process moves to the data output subroutine shown in FIG. 11. The data output operation is to give embroidery frame control data to the drive circuits 49 and 50 for both the X and Y axis components. ) and the contents of the third (fifth bit), respectively, and the positive and negative input terminals XP,
Also set the positive and negative YP and YM of the XM and Y axis components. Next, the read address is advanced to read a word of numerical data of the X-axis component from the first memory 40, and prepare it for output to the numeric output terminal PS to the X-ray drive circuit 49. Further, the read address is advanced to prepare the same number of numeric outputs PS to the Y-axis drive circuit 50. Therefore, while the excitation state of the end sensor 70 continues, the needle waits for the arrival of the rotational phase signal of the sewing machine main shaft 36 from the synchronization signal generator 37, and the needle moves from the work cloth (not shown) stretched on the embroidery frame 6. A setting signal is output to the load terminal in synchronization with the exit timing, causing the down counter 51 to preset the above-mentioned control values for each of the XY axis components. As a result, the down counter 51 starts counting and subtracting the clock pulses from the oscillator 52, and while the subtraction continues, the clock pulses are applied as control signals to both the servo motors 20 and 21 via the pulse distributor 56, etc. Through the operation of the embroidery frame drive mechanism, the embroidery frame carried by the traveler moves along the locus of a planar figure that is a composite of both components of orthogonal coordinates. In addition, FIG. 5 assumes that the types of both servo motors 20 and 21 are pulse motors used in an open-loop control system, and illustrates the use of a circuit element called a pulse distributor 56 for that purpose. However, pulse motors are not limited to those that can be used as servo motors, so when using other types of motors, it is sufficient to use appropriate circuit elements to feedback the amount of motor rotation and control the rotation angle. . After the control signal for one stitch is output in this manner, the control sequence causes the read address counter 43 to be incremented by address, and the process returns to the main routine to continue the sequence for the next stitch. In other words, each time it detects whether the content of the control data for the next stitch is one that instructs an announcement (identification data), or whether it is [86H] or [87H],
During these negations, control of the data output subroutine is repeatedly executed. During the sequence execution of this subroutine, when the excitation of the end sensor 70 is completed, that is, when the end of reading one data block from the cassette tape 33 is detected, the drive output for the cassette tape drive motor 47 is stopped. As expected. The number of stitches for one data block is a maximum of 84 stitches as mentioned above, but the time required for reading it is estimated to be completed during approximately 5 rotations of the upper shaft 36 of the sewing machine, After completion, the control of both servo motors 20 and 21 within that data block is executed until reading of the stored data in one of the memories 40 and 41 is completed. When the reading of the contents of one memory is completed while such embroidery control continues, the process moves to the data reading subroutine shown in Fig. 10 in response to the detection of [86H] in the main routine, and the reading of the contents of the side of which the reading has been completed is performed. The data for the next data block is read into the memory again. In this case, while the embroidery frame control operation continues, the sewing machine
Reading from the cassette tape 33 is executed by an interrupt as shown in FIG. In this way, as the automatic control of embroidery sewing progresses, the reading operation of the cassette tape 33 continues intermittently, and during this time the two memories 40 and 41 alternate between reading and reading roles. Thus, automatic control of one embroidery pattern proceeds without interrupting the sewing machine operation as a whole. Therefore, when the read content of control data [87H] during the main routine is detected, the sewing machine is stopped at the position where the needle bar is raised in response to a signal from the synchronization signal generator 37. The sewing machine motor 48 is stopped by appropriate sewing machine motor stop control. As described above in detail, in the embodiment of the present invention shown in FIG. In order to facilitate synchronized operation with the operation of the embroidery sewing machine, the data read from the magnetic tape 1 is temporarily stored in a static memory in the control circuit, and the static memory has a relatively small capacity. When configuring a computer that uses two memories and performs sequence control operations, a discriminator means for switching the operation selection state of the two memories and storing the state like an index is provided, thereby making it possible to The tape reading operation is performed intermittently, but during this time, the two static memories mutually exchange the roles of reading and reading, so that the overall sewing machine operation is not interrupted and the appearance is maintained. The above assumes that automatic embroidery frame control for each embroidery pattern is performed in a manner such as online control. Complex embroidery patterns can be completed in a consistent continuous motion via magnetic tape without the need for a particularly large amount of static memory in the control circuitry, during which the operator does not have to perform any operations. It is not necessary. This embodiment is economically advantageous because it does not cause confusion in data reading or announcement playback and only requires a small built-in memory, and is easy to operate and is practical. . [Effects of the Invention] As described above, in the automatic sewing machine of the present invention, the magnetic tape reproducing device 33 reproduces the information on the magnetic tape 1, the data reading means 57 reads the data of the sewing control data block, and the memory means 39 reads this data. Store data. The control means 38 controls the automatic sewing mechanism based on the sewing control data in the memory means 39, and when there is identification data (data indicating that the next block is an audio signal block), the switching means corresponds to the identification data (data indicating that the next block is an audio signal block). Since 71 is set to connect the speaker 72 to the magnetic tape playback device 33,
The audio signal block signal of the magnetic tape 1 is applied to the speaker 72. Since this audio signal block is a mixture of a background signal and an audio announcement signal, the audio announcement is played from the speaker 72 along with the background sound. The silent section detecting means 73 generates an end signal when the silence of the reproduced signal given to the speaker 72 continues for Ts, which is shorter than T, and the control means 38 responds to this end signal and controls the switching means 71 to stop playing the magnetic tape. The connection of the data reading means 57 to the device 33 is set. As a result, the data of the next block is given from the magnetic tape reproducing device 33 to the data reading means 57,
The data reading means 57 reads the data of the sewing control data block, and the memory means 39 stores this data. Then, the control means 38 controls the automatic sewing mechanism based on the sewing control data in the memory means 39, and when the identification data is present, the switching means 71 is set to connect the speaker 72 to the magnetic tape reproducing device 33. The signal of the first audio signal block is applied to the speaker 72, and an audio announcement is played from the speaker 72 along with the background sound. Similarly, according to the information on the magnetic tape 1, reading of the data on the magnetic tape 1, automatic sewing control, distribution of the magnetic tape playback device by the switching means 71,
Voice announcements, etc. will be made. As described above, the magnetic tape 1 contains a sewing control data block including identification data indicating when the next block is an audio signal block, a background signal and an audio announcement signal whose level fluctuates at a cycle shorter than Ts. Since the audio signal block is a mixture of audio signal blocks with a silent period of a predetermined length T between the blocks, even if the audio announcement is silent for more than Ts during playback of the audio information recording block, the background Since there is a signal, there will be no signal between Ts. Therefore, the silent section detection means 73 does not generate an end signal, and therefore the control means 57 does not switch the switching means 71 to the data reading means 57 side. As a result, the voice announcement is not interrupted, so the operator can follow the voice announcement and perform appropriate operations, and information on the voice announcement block is not erroneously given to the data reading means 57. As a result, an erroneous signal is not written to the memory means 39, so that the control means 57 that controls the automatic sewing mechanism and the switching means 71 based on the data in the memory means 39 does not malfunction. In other words, automatic sewing control errors do not occur.

[Brief explanation of drawings]

Figure 1 shows the machine used for automatic stitching and Yu-stitch sewing machines.
FIG. 2 is a plan view showing the distribution of recorded information on a magnetic tape on which digital control data and voice announcements are recorded, and a flowchart showing sewing control of a sewing machine using the tape. FIG. 3 is a block diagram showing one of the processes for producing a magnetic tape equipped in an embodiment of the present invention, and FIG. 4 is a block diagram showing another process. FIG. 5 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 6 is a plan view showing the data arrangement on the magnetic tape 1 installed therein, and FIG.
6 is a plan view showing the data contents of each data block shown in FIG. 6, FIG. 8 is a time chart showing the data read signal of the input circuit 57 shown in FIG. 5, and FIGS. 9, 10, and 11. and FIG. 12 is a flowchart showing the control operation of the microcomputer CPU shown in FIG. Figure 4 1: Magnetic tape (magnetic tape), 2
D ₁ , 2D ₂ , ...: Control data recording block (sewing control data block), 2S ₁ , 2S ₂ : Silent band (silent section), 2V ₁ , 2V ₂ , ...: Information recording block of the present invention (audio signal block) , 3, 10, 33: audio cassette tape, 5: mixing device,
6: Microphone, 7: Record player, 1
2: Switching circuit, 33: Magnetic tape playback device (magnetic tape playback device), 39: Stab data memory circuit (memory means), 57: Input circuit (data reading means), 71: Changeover switch (switching means), 7
2: Speaker (speaker), 73: Retriggerable mono multivibrator (silent section detection means),
CPU: Microcomputer (control means).

Claims (1)

[Claims] When the primary block is an audio signal block, the sewing control data block includes identification data indicating this, and a background signal and audio announcement signal whose level fluctuates at a cycle shorter than Ts described below. a magnetic tape having a mixed audio signal block with a silent section of a predetermined length T between the blocks; a magnetic tape reproducing device for reproducing the magnetic tape; a speaker; a data reading means for reading the data of the sewing control data block; A switching means for selectively supplying the reproduction signal of the tape reproduction device to the speaker and the data reading means; A silent interval detection means for generating an end signal when the silence of the reproduction signal supplied to the speaker continues for Ts, which is shorter than T; memory means for storing the read data; automatic sewing mechanism; controlling the automatic sewing mechanism based on the sewing control data in the memory means, and setting the switching means to connect the speaker to the magnetic tape playback device in accordance with the identification data; and in response to the end signal, the switching means,
An automatic sewing machine comprising: control means for setting connection of data reading means to a magnetic tape reproducing device;