JPH04211892A - Electronic computer - Google Patents

Abstract

PURPOSE:To prevent the complication of software accompanied by the complication of condition and to simplify the understanding of software and the change of specifications in an event driving computer control system by executing processing determined by the generation event and the current internal state and performing the transition (non-transition) to the internal state according to the result of the processing. CONSTITUTION:The processing method by types for generation event and holding event is set in advance. By referring to this, the execution, holding, or discard of the generation event and the execution or discard of the holding event are performed. Besides, a table is provided to indicate the plural internal states to be taken after the execution and the position for data deciding this for every processing determined by the event and the internal state to perform the transition to a new internal state by referring to this.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention provides control in response to events that occur externally (also called event-driven control; for example, in a vending machine, when money is inserted, a lamp is turned on to indicate products that can be sold). The present invention relates to an electronic computer device that performs control such as dispensing a product when a button is pressed. Note that in the following figures, the same reference numerals indicate the same or corresponding parts.

0002

2. Description of the Related Art Conventionally, there is a method using a state transition table as an event-driven control method for this type of electronic computer device. This table compares the internal state of the control system and the events that the control system can receive.In other words, given the current internal state of the control system, which events are received, This is a table for determining whether a program corresponding to an event can be executed or whether the event should be ignored. The system is controlled by programming this decision procedure. If the internal state changes to a new one as a result of executing a processing program selected based on the event and internal state, the internal state is updated to the new internal state within the processing program. However, with the above method, it is not possible to temporarily hold received events, so
The program corresponding to the ignored event will not be executed until the same event is received again. However, in general control systems, it is often necessary to temporarily suspend received events and process them later. In order to store the received events, a memory was provided in the program to store the necessary events.

0003

[Problems to be Solved by the Invention] In the conventional method, various flags and memories were provided to store events for each control system to store the necessary events, which resulted in complicated programs and the need for creating programs. It took a long time. In addition, modifications to change or add functionality require analysis of the program, which takes time. On the other hand, the requirements for control systems using microcomputers are becoming more and more complex, and in order to increase the competitiveness of products incorporating control systems, many changes and additions to functions have to be made in a short period of time. It was necessary to respond. Therefore, an object of the invention according to claims 1 and 2 is to provide an electronic computer device that can solve this problem.

[0004] In addition, in the conventional method, when the internal state changes to a new internal state as a result of executing a processing program selected based on an event and internal state, the new internal state is updated within the processing program. In addition, in order to change or add functions, the processing program had to be analyzed, which took time to modify. In this case, if you create a state transition table so that there is always one internal state to transition to next in the processing program, a special internal state will be created to ensure that there is only one internal state to transition to after the processing program is executed. There was also the problem that the number of internal states increased, making the state transition table difficult to understand. On the other hand, the requirements for control systems using microcomputers are becoming more and more complex, and in order to increase the competitiveness of products incorporating control systems, many changes and additions to functions have to be made in a short period of time. In order to respond to this, there was a demand for being able to see in one place how the state transitions of a control system are occurring. Therefore, an object of the invention according to claim 3 is to provide an electronic computer device that can solve this problem.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the electronic computer device according to claim 1 has the following features: ``An event that has occurred (such as 31) and an internal state that it has (such as 32)''.
In a microcomputer control system that performs event-driven control that determines what kind of processing is to be performed based on a receiving means (1), an event processing method storage means (6) storing a processing method for each type of the internal state of the event received by the event receiving means, and a method for processing the event received by the event receiving means; event analysis means (2) that refers to the method storage means and the internal state storage means and determines whether to execute a program corresponding to the received event, temporarily suspend it, or ignore it;
a suspended event storage means (8) for suspending an event determined to be temporarily suspended by the event analyzing means, and executing a program corresponding to the received event based on the result analyzed by the event analyzing means; or reception event control means (3) that stores the event in the pending event storage means or ignores the event; and execution event storage means (9) that stores executable events for each type of internal state. and pending event control means (4) that refers to the execution event storage means, retrieves an executable event from the pending event storage means, and executes a program corresponding to the event when the internal state changes. shall be

[0006] The electronic computer device according to claim 2 further provides the electronic computer device according to claim 1, further adding: ``When the internal state changes, an event to be discarded among the events pending in the internal state. and a discard event control means (5) for referencing the discard event storage means and canceling the event held in the pending event storage means, and

[0007] The electronic computer device according to claim 3 includes ``internal state storage means (for storing the type of the current internal state (32, etc.)).
7), an event receiving means (1) that receives an event that has occurred (such as 31), and selects which processing program to execute by referring to the received event and the stored internal state, and executes the processing. In a microcomputer control system that performs event-driven control and includes processing program selection means (13) for executing a program, the processing program is selected for each combination of the received event and the stored internal state. one or more internal states (such as record 62) that can exist after execution of
and a data pointer (record 61, etc.) indicating the storage position of the address data for determining the internal state and stored in the storage means for storing the work data of the processing program ( an internal state change information storage means (17) configured and stored (as element 60, etc.); after execution of the relevant processing program, a new internal state is determined by referring to the internal state change information storage means and the internal state storage means is Internal state changing means to update (1
5).

[0008]

[Effect]

(A) Regarding the inventions related to claims 1 and 2:
Decide in advance how to process received events (
event processing method), event analysis that determines event processing (i.e., execution of a program corresponding to the event, temporary suspension of the event, or ignoring of the event) based on the internal state, received event, and predetermined event processing method. The functions can be improved by using a receiving event control means, a receiving event control means that processes according to the determination, and a pending event control means that checks temporarily suspended events when the internal state changes and executes those that can be processed. When a change or addition occurs, it is possible to deal with it simply by changing the event processing method. Additionally, by examining temporarily suspended events when the internal state changes and removing pending events that no longer need to be suspended, it is possible to easily handle abnormalities and exceptions in the control system. .

FIG. 1 shows a functional configuration diagram of the invention related to claims 1 and 2. A processing method for a received event is determined in advance, and the information is written in an event processing method storage means 6. The event received by the event receiving means 1 is analyzed by the event analyzing means 2, and processing is performed to execute a program corresponding to this event, temporarily suspend this event, or ignore this event. A method is determined. As a result, the reception event control means 3 executes a program corresponding to the event, stores the event in the pending event storage means 8, or ignores the event, depending on the determined processing method. . Further, the pending event control means 4 retrieves an executable event from the pending event storage means 8 when the internal state changes, and executes a program corresponding to the event. Furthermore, when the internal state changes, the discard event control means 5 refers to the preset discard event storage means 10 and removes the event to be discarded from the pending event storage means 8.

(B) Regarding the invention related to claim 3: For each event and internal state, after execution of the processing program, which data in the work data storage means has what value and which internal state Information indicating whether to migrate is stored in the internal state change information storage means, and after executing the relevant processing program, the internal state change information storage means is referred to, a new internal state is determined, and the information stored in the internal state storage means is Update internal state. With this method, the state transitions of the control system can be managed by the internal state change information storage means, so by referring to the internal state change information storage means, you can see how the state transitions of the control system occur without analyzing the program. You can find out in a short time if there are any.

FIG. 12 shows a functional configuration diagram of the invention related to claim 3. In advance, for each event 31 and internal state 32, the internal state change information storage means 17 stores information regarding which data in the work data storage means 16 becomes what value when the internal state changes after the processing program 14 in question is executed. Remember it. The processing program 14 corresponding to the event 31 received by the event receiving means 1 and the current internal state 32 stored in the internal information storage means 7 is selected and executed. The selected processing program 14 performs predetermined processing while reading and writing data in the work data storage means 16. When the execution of the processing program 14 is completed, the internal state change means 15 refers to the event 31, the current internal state 32, the internal state change information storage means 17, and the work data storage means 16, and determines a new internal state. The internal state storage means 7 is updated.

0012

Embodiment Next, an embodiment (referred to as a first embodiment for convenience) of the invention relating to claims 1 and 2 will be described based on FIGS. 1 to 11. Here, a control system for a vending machine will be explained as an example. First, I will briefly explain the operation of a vending machine. FIG. 2 shows the configuration of the control system in this embodiment. In the figure, 21 is a main control device, 22 is a coin mechanism as a coin control device, 2
3 is a device control device, 24 is a keyboard control device, and 25 is a door control device. This system includes each control device 21 to
25 are multiprocessor systems each having a microcomputer, memory, and input/output device for each function.
The respective control devices 21 to 25 are connected by a communication line 26.

FIG. 3 shows event 3 in the first embodiment.
1 is a state transition table showing processing contents determined by 1 and an internal state 32. In the figure, for example, when money is inserted into a vending machine, the coin mechanism 22 detects it, and the coin mechanism 22 transmits an inserted amount detection event to the main controller 21. If the main controller 21 receives an input amount detection event in the standby state or deposit state, the main controller 21 executes a deposit processing program that calculates the input amount and lights up the lamp of the product that can be sold. Furthermore, if an input amount detection event is received in the sales state or refund state, the event is temporarily put on hold, and when the internal state becomes the standby state or the deposit state, the deposit is processed by the hold event control means 4 shown in FIG. I do. Further, the input amount detection event received when the keyboard is being operated is discarded, and the suspended input amount detection event is removed from the pending event storage means 8 in FIG.

When a button for selecting a product is pressed, it is detected by the door control device 25, and a button press event is transmitted from the door control device 25 to the main control device 21. When the money is in the deposit state, it decides which product to sell, detects which button on the front of the vending machine is pressed, and executes a sales processing program to take out the product based on the decision. In any other internal state, the received event is ignored. When the sale of the product ends, a sales end event is transmitted from the device control device 23 to the main control device 21. In the sales state, a refund processing program is executed to calculate the change and pay out the change from the coin mechanism 22. In any other internal state, the received event is ignored.

When the payout of change is completed, a refund end event is transmitted from the coin mechanism 22 to the main controller 21. When a refund end event is received in the refund state, the lamp turned off for sale is turned off and a standby transition processing program is executed to return to the standby state. In any other internal state, the received event is ignored. When the service person operates the keyboard, a keyboard operation start event is transmitted from the keyboard control device 24 to the main control device 21. When a keyboard operation start event is received in the standby state, a key input start processing program that controls input from the keyboard is executed. In any other internal state, the received event is ignored. When the service person finishes operating the keyboard, a keyboard operation end event is transmitted from the keyboard control device 24 to the main control device 21. When a keyboard operation end event is received while the keyboard is in operation,
A key input termination processing program is executed to terminate input processing from the keyboard. In any other internal state, the received event is ignored.

Event 31 is coded in the microcomputer as shown in FIG. This code is called an event code. The internal state storage means 7 in FIG.
This storage means 7 is a means for storing byte data.
The internal status code shown in the code assignment in FIG. 4 is stored.

FIG. 6 shows the event processing method storage means 6 of FIG.
The structure of Each event 31 and each internal state 3
In addition to 2, it has address size data (4 bytes in this example), and 0 indicates that the received event is ignored.
1 indicates that the received event is to be held on hold, and the portion where each program address is written indicates that the program is to be executed. For example, in this Figure 6, when the internal state is in the standby state (that is, the top horizontal row within the rectangular frame in this figure), when the input amount detection event and the keyboard operation start event are received, the event corresponds to that event. Program (i.e., the deposit processing program when receiving the input amount detection event, and the key input start processing program when receiving the keyboard operation start event)
, and otherwise ignore received events. Similarly, when the internal state is in the sales state and an input amount detection event is received, that event is put on hold, and when a sales end event is received, the program corresponding to that event (i.e., the refund processing program) is executed, Otherwise, indicates that the received event is to be ignored. The same applies to other states below.

The event analysis means 2 in FIG. 1 refers to the internal state storage means 7 and the event processing method storage means 6 and determines how to process the received event. For example, if the input amount detection event is received when the internal state 32 is in the standby state, the internal state code is 0, the event code is 0, and the event processing method storage means 1 of FIG.
Looking at the first row and column, it shows that the program corresponding to the received event is executed. Furthermore, if the input amount detection event is received when the internal state is in the selling state, the internal state code is 2 and the event code is 0. Looking at the third row and first column of the event processing method storage means in FIG. Indicates that the event that has occurred is to be held on hold.

FIG. 7 shows the structure of the pending event storage means 8 of FIG. 1. This stores one bit of data for each event, and the bit position of each event corresponds to the event code in FIG. If the event processing method determined by the event analysis means 2 is to execute a program corresponding to the event, the reception event control means 3 in FIG. 1 calls that program (subroutine call, function call, etc.) and suspends the event. If so, the event position (
Set the bit at the position indicated by the event code to 1.

When the internal state changes due to the execution of the program, the discard event control means 5 shown in FIG. 1 is activated.
The event to be discarded is removed from the pending event storage means 8 by referring to the discarded event storage means 10. FIG. 8 shows the structure of the discard event storage means 10. Each discard event storage means 10 has 1-bit data. This is created from the state transition table shown in FIG. 3, and the part where the pending event is discarded is 0, and the rest is 1. Bitwise AND of the contents of the discarded event storage means 10 in the row indicated by the internal state (horizontal row indicated by the internal state code) and the suspended event storage means 8
By taking , the event to be discarded in its internal state can be removed from the pending event storage means 8.

Further, the pending event control means 4 in FIG. Execute. FIG. 9 shows the structure of the execution event storage means 9. Each execution event storage means 9 has 1-bit data. This is created from the state transition table shown in FIG. 3, and the event part that executes the program is 1, and the other parts are 0. By performing a bit-by-bit AND between the contents of the execution event storage means 9 in the row indicated by the internal state (horizontal row indicated by the status code) and the pending event storage means 8, execution can be performed in that internal state and pending event storage can be performed. The event held in means 8 is retrieved. Then, the program corresponding to the retrieved executable event is executed from the left side of the pending event storage means 8 (that is, in the order of input amount detection and button press). Here, it is done from the left side, but it can also be done from the right side.

FIGS. 10 and 11 show flowcharts of the overall control of the first embodiment. In both figures 10 and 11, T1 and T2 are connectors between these two figures, and step S2 is the step S3 and S of the discard event control means 5.
5, S6 indicates the operation of the pending event control means 4, step S9 indicates the operation of the event analysis means 2, and step S11 indicates the operation of the reception event control means 3, and the conditions and contents of this operation are as described above. be.

Next, an embodiment of the invention according to claim 3 (referred to as a second embodiment for convenience) will be described mainly based on FIGS. 12 to 18. Also in this second embodiment, FIG.
This will be explained using a control system for a vending machine as an example. Figure 1
3 is a state transition table in this second embodiment. FIG. 13 differs from FIG. 3 in that an internal state to which the processing program is executed after execution has been added, and the refund processing portion has been changed. That is, when money (including a card) is inserted into the vending machine, it is detected by the coin mechanism 22, and an inserted amount detection event is transmitted from the coin mechanism 22 to the main controller 21. If the input amount detection event is received in the standby state or deposit state, the main controller 2
1 executes a deposit processing program that calculates the amount deposited and lights up the lamp of the product that can be sold, and the internal state 32
Change to deposit status. Further, if an input amount detection event is received in the sales state or refund state, the event 31 is temporarily put on hold, and the deposit processing is performed when the internal state becomes the standby state or deposit state.

When a button for selecting a product is pressed, it is detected by the door control device 25, and a button press event is transmitted from the door control device 25 to the main control device 21. When the internal state is in the deposit state, the internal Change the status to sold status. In any other internal state, the received event is ignored. When the sale of the product ends, a sale end event is transmitted from the device control device 23 to the main control device 21. When the internal state is in the sales state, a sales termination processing program is executed to change the internal state to either a deposit state or a refund state. Here, the sale termination processing program subtracts the product price from the input amount and updates the input amount. Then, if it is a multi-bend, the lamp of the product that can be sold is lit, and the internal state 32 is changed to the deposit state. On the other hand, if it is a single vent, the updated input amount is paid out as change and the internal state 32 is changed to a refund state. Multi-bend means that once you invest money, each time you sell a product, the product price is subtracted from the invested amount to update the invested amount, and while there are still products that can be sold (the updated invested amount is less than the product price). This is a sales method that allows you to continue selling products by pressing a button. Single bend is a sales method in which when a customer sells one product by inserting money once, the updated amount of money is paid out as change. Also, even if it is a multi-bend at first, if the updated input amount becomes smaller than the product price, it becomes a single-bend. Ignore the received event when the internal state is other than the sales state.

When the payout of change is completed, a refund end event is transmitted from the coin mechanism 22 to the main controller 21. When a refund end event is received when the internal state is in the refund state, a standby transition processing program is executed to turn off the lamp that was lit for sale and return to the standby state, and the internal state is changed to the standby state. In any other internal state, the received event is ignored. When the serviceman operates the keyboard, the keyboard control device 2
4 sends a keyboard operation start event to the main controller 21. When a keyboard operation start event is received while the internal state is in a standby state, a key input start processing program that controls input from the keyboard is executed, and the internal state is changed to a keyboard operation in progress state. In any other internal state, the received event is ignored. When the service person finishes operating the keyboard, a keyboard operation end event is transmitted from the keyboard control device 24 to the main control device 21. When a keyboard operation end event is received while the internal state is in the keyboard operation state, a key input end processing program is executed to end the input processing from the keyboard, and the internal state is changed to a standby state. In any other internal state, the received event is ignored.

[0026] Also in this second embodiment, event 3
1 is coded in the microcomputer as shown in FIG. The internal state 32 is also coded in the microcomputer as shown in FIG.

In this second embodiment, a method of updating the internal state when the sales termination process is executed will be explained. Note that the method for selecting a processing program is the same as in the first embodiment. FIG. 14(a) shows the structure of the internal state change information storage means 17 of FIG. 12. The internal state change information storage means 17 has a two-dimensional array structure, and the event codes described in FIG. 5 are allocated in the horizontal direction, and the internal state codes described in FIG. 4 are allocated in the vertical direction. Each element 60 of this array is composed of a structure as shown in FIG. 14(b). The record 61 in this structure contains the work data storage means of FIG. 12 that must be referred to in order to determine the next internal state (that is, the memory that stores the data necessary for processing the processing program 14 and the processing results). ) 16 as an address for the integer type data, and if there is no data to be referenced, 0 is stored. Also, the record 62 in this structure is a one-dimensional array structure, and the subscripts 0 to 3 of this array 62 are the memory (in the work data storage means 16) pointed to by the address (data pointer) stored in the record 61. Corresponding to the value stored in the area, the new internal status code to be updated is stored in the subscript element. In this embodiment, the values stored in the memory area pointed to by the address stored in the record 61 can be identified from 0 to 3. (In other words, up to four internal states to transition to next can be described.)

FIG. 15 shows an example of the element 60 of the internal state change information storage means 17. FIG. 15A shows an example of the element 60a when the event 31 is the sale end and the internal state 32 is the sale state (event code=2, status code=2). The address of the single bend flag as data in the work data storage means 16 is stored in the record 61 of this element 60a. This indicates that the value of the single bend flag as data in the working data storage means 16 should be referred to in order to determine the internal state to which the transition will occur. The record 62 of this element 60a contains the internal state to be transferred to next (internal state code)
is stored. This means that when the event is sold out and the internal state is sold, the next internal state refers to the value of the single bend flag in the working data storage means, and the value is 0.
When the value is 1, the deposit status is (internal status code = 1), and when the value is 1, the refund status is (internal status code = 3), and the value is 0, 1.
Otherwise, the internal state remains unchanged (internal state code = -
1)

Similarly, in FIG. 15(b), event 31 indicates the detection of the input amount, and internal state 32 indicates the standby state (event code=
0, internal state code=0) is an example of element 60b. In this case, record 61 stores 0, indicating that there is no data to be referenced. In this case, the next internal state (internal state code) is stored in the 0th position of the array of records 62. In this example, when the event detects the input amount and the internal state is in the standby state, the next internal state is the deposit state (internal state code = 1).
).

FIG. 15(c) is an example of the element 60c when the event 31 is the detection of the input amount and the internal state 32 is in the standby state (event code=0, internal state code=0). In this case, record 61 stores 0, indicating that there is no data to be referenced. Therefore, it refers to the 0th position in the array of record 62 and learns that the internal status code is -1. Internal status code is -1
In the case of , it indicates that the next internal state to be transitioned to is the same as the current internal state (internal state transition is not performed).

The process will be explained below according to the flowcharts shown in FIGS. 16 to 18. FIG. 16 is a flowchart showing the operation procedure of the second embodiment. Step 801 in the same figure,
802 is an operation procedure of the processing program selection means 13 in FIG. 12, which determines which processing program in steps 803 to 808 is to be executed based on the internal state 32 and the event 31. Step 809 is performed by the internal state changing means 15 in FIG.
The details are shown in FIG. 18.

FIG. 17 is a specific example of the processing program 14 (FIG. 12), which is a flowchart of sales termination processing. In step 901, the product price is subtracted from the input amount to update the input amount. In step 902, the updated input amount is compared with the product price, and if the input amount is larger, step 903
, 904, otherwise go to steps 905, 90
Proceed to step 6. Steps 903 and 904 are for multi-bend, and in step 903, the single-bend flag as data in the work data storage means 16 is set to 0. In step 904, lamps of salable products are turned on so that they can be sold next. step 905,
906 is a single bend, and step 905
Then, the single bend flag in the work data storage means 16 is set to 1. In step 906, a command is issued to pay out the updated amount of money as change. In this sales termination process, the value of the single bend flag in the work data storage means 16 is set in steps 903 and 905.

FIG. 18 is a flowchart showing the operation procedure of the internal state changing means 15. In step 1001, based on the current internal state 32 and event 31, the value of the record 61 of the corresponding element 60 in the internal state change information storage means 17 is assigned to the variable dataptr. This indicates the address of the integer type data in the working data storage means 16 that must be referred to in order to determine the next internal state. For example, when the processing program is a sales end process, the address of the single bend flag is stored (see FIG. 15(a)). In step 1002, it is checked whether the value of the variable dataptr is 0. If it is 0, go to step 1003, otherwise go to step 10.
Proceed to 04. If the value of the variable dataptr is 0, it means that there is no data to refer to, so proceed to step 10.
Proceed to step 03 and store 0 in the variable datano. variable d
If the value of ataptr is other than 0, step 100
Proceeding to step 4, the value pointed to by the address stored in the variable dataptr is retrieved and stored in the variable datano. In step 1005, the variable datano is used to retrieve the data stored in the array number position corresponding to the variable datano of the record 62 of the corresponding element 60, and the variable ns
Assign to ts. The internal status code for the next transition is written here. In step 1006, the variable nsts is checked and nsts is -
If it is not 1, the new internal state is stored in the internal state storage means in step 1007. If nsts is -1, the internal state to which the next transition is made is the same as the current internal state (no internal state transition is performed), so the process ends without doing anything.

[0034]

Effects of the Invention According to the invention related to claim 1, the microcomputer control performs event-driven control that determines what kind of processing is to be performed depending on the event 31 that has occurred and the internal state 32 that it has internally. In the system, internal state storage means 7 for storing the type of the internal state.
, an event receiving means 1 that receives the event that has occurred, an event processing method storage means 6 that stores a processing method for each type of the internal state of the event received by the event receiving means 1, and the event receiving means 1. event analysis means for determining whether to execute a program corresponding to the received event, temporarily suspend it, or ignore it by referring to the event processing method storage means 6 and internal state storage means 7; 2, a suspended event storage means 8 for suspending the event determined to be temporarily suspended by the event analyzing means 2, and executing a program corresponding to the received event based on the results analyzed by the event analyzing means 2. or, a reception event control means 3 which stores the event in the pending event storage means 8 or ignores the event, and an execution event storage means 9 which stores executable events for each type of internal state. and pending event control means 4 which refers to the execution event storage means 9, retrieves an executable event from the pending event storage means 8, and executes a program corresponding to the event when the internal state changes. By providing a general-purpose event management method, when the control method of the control system is changed, the event processing method storage means, the temporary suspension of received events, the execution and discarding of the suspended events, This is possible by simply changing the data stored in the execution event storage means and the discard event storage means.
The effect is that the control method of the control system can be easily changed.

Further, according to the invention related to claim 2, when the internal state of the computer device of the invention related to claim 1 changes, an event that should be discarded among the pending events in the internal state is further provided. The discard event storage means 10 stores the target event, and the discard event control means 5 refers to the discard event storage means 10 and cancels the event held in the pending event storage means 8. By checking the events that were temporarily suspended when the internal state changes and canceling the suspension of events that no longer need to be suspended, it is possible to easily handle abnormalities and exceptions in the control system. can get.

According to the third aspect of the invention, the internal state storage means 7 stores the type of the current internal state 32, and the event reception means 1 receives the event 31 that has occurred.
and a processing program selection means 13 that refers to the received event 31 and the stored internal state 32, selects which processing program 14 is to be executed, and causes the processing program 14 to be executed. In a microcomputer control system that performs mold control, for each combination of the received event 31 and the stored internal state 32, one or more internal states (record 62
) and a data pointer (record 62) indicating the storage position of the address data, which is address data for determining the internal state and is stored in the storage means 16 that stores the work data of the processing program. (Element 60
Internal state change information storage means 1 for setting and storing (as)
7. Internal state changing means 15 is provided, which refers to the internal state change information storage means 17 to determine a new internal state and updates the internal state storage means 7 after the processing program 14 is executed. By looking at the internal state change information storage means 17, it is possible to obtain the effect that the state transition of the control system can be known in a short time without analyzing the program.

[Brief explanation of the drawing]

[Fig. 1] A block diagram showing the functional configuration of the invention related to claims 1 and 2.

FIG. 2 is a block diagram showing the system configuration of a vending machine as an embodiment to which the present invention is applied.

[Figure 3] Diagram showing processing contents by event and internal state in the system in Figure 2

[Figure 4] A diagram showing an example of the status code as well.

[Figure 5] Diagram showing an example of the event code

FIG. 6 is a diagram showing an example of the contents of the event processing method storage means.

FIG. 7 is a diagram showing an example of the configuration of the pending event storage means.

FIG. 8 is a diagram showing an example of the configuration of the discard event storage means.

FIG. 9 is a diagram showing an example of the configuration of the execution event storage means.

[Figure 10],

[FIG. 11] A flowchart summarizing the operation procedure of each control means in FIG. 1.

FIG. 12 is a block diagram showing the functional configuration of the invention according to claim 3.

[Figure 13] A diagram showing an example of the state transition table as well.

[Figure 14
] A diagram showing the configuration of the internal state change information storage means in FIG. 12.

FIG. 15 is a diagram showing an example of elements of internal state change information storage means.

FIG. 16 is a flowchart as an example of the operation in FIG. 12;

[Figure 17] Flowchart as an example of a processing program

FIG. 18 is a detailed flowchart showing the operation of the internal state changing means in FIG. 12;

[Explanation of symbols]

1 Event receiving means 2 Event analyzing means 3 Received event controlling means 4 Pending event controlling means 5 Discarding event controlling means 6 Event processing method storing means 7 Internal state storing means 8 Pending event storing means 9 Execution event storing means 10 Discarding event storing means 13 Processing program selection means 14 Processing program 15 Internal state change means 16 Work data storage means 17 Internal state change information storage means 31 Event 32 Internal state 60 (60a to 60c) Element 61 Record 62 Record

Claims (3)

[Claims] [Claim 1] An internal state that stores the type of the internal state in a microcomputer control system that performs event-driven control that determines what kind of processing is to be performed depending on an event that occurs and an internal state that it has. a storage means, an event reception means for receiving the event that has occurred, an event processing method storage means for storing a processing method for each type of the internal state of the event received by the event reception means, and an event reception means for receiving the event by the event reception means. event analysis means for determining whether to execute a program corresponding to the received event, temporarily suspend it, or ignore it by referring to the event processing method storage means and internal state storage means; A pending event storage means for suspending an event determined to be temporarily suspended by the analysis means; and a program corresponding to the received event is executed or the event is suspended based on the result analyzed by the event analysis means. reception event control means for storing the event in the event storage means or ignoring the event; execution event storage means for storing executable events for each type of the internal state; and when the internal state changes, the execution event A computer device comprising pending event control means for referring to storage means, extracting an executable event from said pending event storage means, and causing a program corresponding to the event to be executed. 2. In a microcomputer control system that performs event-driven control that determines what kind of processing is to be performed depending on an event that occurs and an internal state that it has, an internal memory that stores the type of the internal state. a state storage means; an event reception means for receiving the event that has occurred; an event processing method storage means for storing a processing method for each type of the internal state of the event received by the event reception means; event analysis means that refers to the received event in the event processing method storage means and the internal state storage means and determines whether to execute a program corresponding to the received event, temporarily suspend it, or ignore it; A pending event storage means for suspending an event determined to be temporarily suspended by the event analyzing means; and a pending event storing means for suspending an event determined to be temporarily suspended by the event analyzing means, and a program corresponding to the received event is executed or the event is received event control means for storing the event in the pending event storage means or ignoring the event; execution event storage means for storing executable events for each type of the internal state; Pending event control means refers to the event storage means, retrieves an executable event from the pending event storage means, and executes a program corresponding to the event; and when the internal state changes, the event that was pending in the internal state; A discard event storage means for storing an event to be discarded in the event storage means, and a discard event control means for referring to the discard event storage means and canceling an event held in the pending event storage means. Characteristic electronic computer equipment. 3. Internal state storage means for storing the type of current internal state; event reception means for receiving the generated event; and a processing program that refers to the received event and the stored internal state. In a microcomputer control system that performs event-driven control, the microcomputer control system includes processing program selection means for selecting a processing program to be executed and executing the processing program. one or more internal states that can be assumed after execution of the processing program, and address data for determining the internal states, the address being stored in a storage means for storing work data of the processing program; an internal state change information storage means for presetting and storing a data pointer indicating a data storage position, and after executing the processing program, refers to the internal state change information storage means to determine a new internal state; An electronic computer device comprising internal state changing means for updating storage means.