KR0150285B1 - Synchronous and asynchronous communication apparatus for communication between network application programs and method thereof - Google Patents

Abstract

The present invention relates to a synchronous and asynchronous communication apparatus for a network application program and a method thereof. The present invention relates to a communication apparatus for communication between communication application programs in a multi-task computer and communication application programs on a network to which the multi-task computer is connected. A communication application program performer for executing the communication application program, the transmitter comprising: a transmitter for transmitting data according to a data transmission request given by the communication application program performer, a transmission recorder for recording information about the fact of transmission of the transmitter, A transmitter configured by an interrupt clock for periodically checking the transmission status of the transmitter operated by the transmitter to drive the transmitter at regular time intervals, the receiver comprising: a receiver for receiving data transmitted from the transmitter, and a reception of the receiver Control the behavior Performs an input / output interrupt processor, a reception recorder for confirming that the data received by the receiver is the same as previously received data, and a corresponding communication processing method when the received data is new data by the reception recorder. It consists of a receiver which consists of processing method storage method for each communication, and supports asynchronous communication as well as synchronous communication to make a wider range of communication program performers, so that the communication program can freely communicate more. It has the advantage of easy design of communication program.

Description

Synchronous and asynchronous communication device and method of network application

1 is a conceptual diagram of a multi-tasking computer.

2 is a network connection diagram of the multi-tasking computer of FIG.

3 is a simplified configuration diagram of a conventional program performer for communication.

4 is a simplified block diagram of a communication program performer including a synchronous and asynchronous communication device according to the present invention.

5 is a detailed block diagram of a synchronous and asynchronous communication apparatus according to the present invention.

6 is a flowchart illustrating the operation of the input / output interrupt processor of FIG.

7 is a flowchart illustrating the operation of the receiver of FIG.

8 is a flowchart of the operation of the interrupt clock of FIG.

9 is a flowchart illustrating the operation of the transmitter of FIG.

FIG. 10 is a flowchart of transmission result processing of the receiver of FIG.

* Explanation of symbols for main parts of the drawings

51: receiver 52: communication application

53: transmitter 54: input / output interrupt handler

55 receiver 56 reception recorder

57: Communication method saver 58: Interrupt clock

59: transmitter 5A: transmit data storage

5B: transmission log

The present invention relates to a synchronous and asynchronous communication apparatus and method of a network application, and more particularly, to a communication between communication applications in a multi-working computer and to a synchronous and asynchronous communication between network communication applications on a network to which the multi-working computers are interconnected. A synchronous and asynchronous communication apparatus capable of communication and a method thereof.

In general, as shown in FIG. 1, multiple communication program performers 10 may be simultaneously executed in a multi-task computer, and the communication programs perform necessary tasks through communication with each other as necessary.

In addition, the multi-working computers may be connected to several other multi-working computers through an external communication device 20 to form a network, as shown in FIG. Communicate with program manager for communication.

In the environment shown in FIGS. 1 and 2, a communication program performer is manufactured and used for various purposes.

In recent years, the cost of computer equipment is lower than that of performance, and the speed of the network is fast enough to perform multimedia.

A non-trivial example is a program executor for communication that includes programs that manage and view information on a network, programs that want to view it, and programs that allow multiple users to collaborate through a computer. .

In order to perform a communication between the multi-working computer and the program performer for communication on the network, a communication device for communication is required.

Therefore, in the related art, as shown in FIG. 3, the internal communication transceiver 32, that is, the communicator is composed of a transmitter and a receiver combined together, causes the communication program performers 31 (hereinafter, also referred to as communication programs) 31 to be communicated with other communication programs. If communication is performed at any moment, the communication is performed while the state of transmission is maintained or the state of reception is maintained.

Since the communication is possible only in the transmission or reception state of the conventional communication apparatus, communication must be performed by determining the order of transmission and reception between the two communication programs in advance.

That is, such a communication method is called a synchronous communication method, and a representative example thereof is a client server method.

In the client server method, one communication program plays a role of a server, and the other communication program plays a role of a client.

These roles are assigned from the production of the program and do not change their role during execution.

The communication program in the server role performs the tasks necessary for the first time and then stops the execution and waits until there is a transmission from the communication program in the other client role performance after placing the communicator in the reception position.

The communication program in the client role may request a service necessary for the server communication program as necessary during the execution of its required task.

When this requirement is sent to the server side, the server waiting to receive it receives it, does the necessary work, and sends the result to the client side.

At this time, the server-side communicator switches to the transmission state and then transmits the result.

However, in the synchronous communication method of the client-server method as described above, since a communication program using a conventional communication device directly performs transmission and reception of change data in a transmission / reception state, no other processing can be performed during its execution. There is a flaw that cannot be received and cannot be transmitted in the receive state.

In addition, since communication programs communicating with each other must be designed in advance with mutually dependent roles such as client servers, there is a problem in that a design difficulty of accurately analyzing and designing the mutual relations and interactions of two communication programs is large.

In addition, communication program models of different roles, such as the client server, have a problem that they cannot accommodate a model of the equivalence relationship, such as a groupware program, which requires or provides a service to other programs as needed. .

That is, the conventional implementation of the communication program performers as described above has been generally used as a module in which a synchronous communicator is implemented, but due to its synchronous limitations, there is a big problem in the production of groupware applications.

An object of the present invention for solving the problems of the synchronous communication apparatus as described above, the communication apparatus for communication between the communication program is provided with a transmitting unit and a receiving unit, respectively, so that each communication program in advance the transmission state and the reception state to each other It is to provide a synchronous and asynchronous communication device for a network application that can transmit on one side and receive on the other side at any time, without needing to decide.

A feature of the present invention for achieving the above object is a communication device for communication between communication application programs in a multitasking computer and communication application programs on a network to which the multitasking computers are connected, the communication application program. And a communication application program performer for performing data transmission, comprising: a transmitter for transmitting data according to a data transmission request given by said communication application program performer, a transmission recorder for recording information about the transmission fact of the transmitter, and being operated by the transmitter A transmitter comprising an interrupt clock for periodically checking the transmission status of the transmitter for driving the transmitter at regular time intervals: a receiver for receiving data transmitted from the transmitter, and an input / output interrupt for controlling the reception operation of the receiver Processor and icon A reception recorder for confirming whether the data received by the receiver is the same as previously received data, and a communication-specific processing method storage for performing a corresponding communication method when the received data is new data by the reception recorder. It consists of the receiving part comprised.

An additional feature of the present invention is that, when the communication application program calls a transmitter of a transmitter to transmit data, the transmitter stores and transmits the data in a transmission data store, and the first step includes: A second step of recording information on the fact of transmission after transmission of the transmitter in the transmission recorder and operating an interrupt clock for periodic inspection of the transmission status: the transmitter is driven at a predetermined time interval by the operation of the interrupt clock of the second stage A third step of continuously transmitting data; and a fourth step of operating the receiver by an operation of an input / output interrupt processor of the receiver when the data is received from the third step; Step 5 and Examining whether the same data as the previously received data by checking the reception log; If emitter of said data is not the same as the previous data if the data is in to the receiver is received and carried out a sixth step of performing a communication process corresponding groups disposal method stored communication data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a simplified block diagram of a synchronous and asynchronous communication apparatus of the present invention. The communication apparatus is mainly composed of a communication application program 41, a receiver 42, and a transmitter 43.

5 is a detailed block diagram of a synchronous and asynchronous communication apparatus according to the present invention of FIG. 4, wherein the communication apparatus is largely composed of a communication application 52, a receiving unit 51 and a transmitting unit 53, and the receiving unit ( 51 is composed of an input / output interrupt processor 54, a receiver 55, a reception recorder 56, and a communication method storage 57.

The transmitter 53 is composed of an interrupt clock 58, a transmitter 59, a transmission data store 5A, and a transmission recorder 5B.

The transmitter 53 and the receiver 51 operate automatically independently by an interrupt, and the communication application program 52 transfers the data to the transmitter 53 for processing if there is data to be transmitted, and the transmitter 53 And receiver 51 exchange information for lossless data transmission.

In the transmitter 53, an interrupt clock 58 and a transmitter 59 are operation modules, and the transmitter data store 5A and the transmitter recorder 5B are information related to storage and execution of data by the transmitter 59. This module is used for storing.

First, a case of transmission is described by way of example. When there is data to be transmitted by the communication application 52, the transmitter 59 calls the transmitter 59 and transmits the data. Store in 5A) and then transmit.

After transmission of the transmitter 59, information about the fact of transmission is recorded in the transmission recorder 5B, and the interrupt clock 58 is operated to periodically check the transmission status.

The interrupt clock 58 starts or ends by the transmitter 59. When the interrupt clock 58 operates, the interrupt clock 58 drives the transmitter 59 at a predetermined time interval designated by the transmitter 59. do.

Accordingly, the transmitter 59 is driven by the communication application 52 and the interrupt clock 58.

FIG. 9 is a flowchart illustrating the operation of the transmitter, which is described in detail as described above, step by step. When the transmitter is performed, the transmitter checks whether it is a communication application program (s91).

If the communication application program is started, the communication application program receives the transmission data input together at the start of operation and stores it in the transmission data store (s98).

Subsequently, when the other party sends the result of the transmission to its reception unit after the transmission, the transmission result processing method to process the registration is registered in the reception unit (s99).

After the above preparation is completed, the transmitter transmits the transmission data together with the given transmission destination (s9A), and the transmitter which has completed the transmission writes the fact of transmission to the transmission recorder (s9B).

Next, the interrupt clock is operated to periodically check the transmission result (s9C). If the interrupt clock has already been driven in this way, the process proceeds from step s91 to step s92.

In the step s92, when the interrupt clock has driven the transmitter, first, the fact that the transmission is completed is checked in the transmission recorder (s93).

The transmission completion fact of the transmission recorder writes the transmission completion to the transmission recorder as shown in FIG. 10, i.e., the processing method registered by the sentence in step s99 (sA1).

When the check result is transmitted (s94) in accordance with the above step (s93), the interrupt clock is stopped (s96), and the transmission fact is deleted from the transmission recorder.

If the transmission is not completed in the step s94, it is assumed that there is a loss of the transmitted data, and the data is again retrieved from the transmission data storage and retransmitted (s95).

As shown in FIG. 8, an interrupt clock for repeatedly performing the transmitter is driven, and the interrupt clock of FIG. 8 is started by the transmitter.

First, when the interrupt clock is driven, a time interval and the number of interrupts are designated (s81). Accordingly, when the interrupt clock is driven, the given time interval and the specified number of times are first checked (s82).

A time interval is given and the current number of repetitions is stopped for a predetermined number of times (s83), and after the specified time has elapsed, the transmitter is operated again to drive the transmitter (s84) and the number of next repetitions is increased (s85).

An example of reception is as follows.

That is, referring to FIG. 5, the input / output interrupt processor 54 and the receiver 55 are operation modules in the receiver 51, and the communication method processing method storage 57 and the reception recording unit 56 are described in FIG. The receiver 55 is used for a post-receipt processing method and management of received information for lossless communication.

The receiving unit 51 is performed independently of the communication application program 52, independently.

Next, a description will be made of a receiving unit. If there is data transmitted from the outside to the receiving unit 51, an input / output interrupt is first generated, and an input / output interrupt processor 54 is performed, and the input / output interrupt processor 54 is a receiver 55. To operate.

Subsequently, the receiver 55 examines the reception recorder 56 and transmits a repeated reception response if the same as previously received data and removes the received data. Otherwise, the receiver 55 corresponds to the corresponding processing method storage 57. Fetch a method to call it.

6 is a flow chart of the input / output interrupt processor of the receiver. When data arrives from the outside, an input / output interrupt occurs (s61), the input / output interrupt processor is automatically executed (s62), and the input / output interrupt processor drives the receiver ( s63).

The operation flow diagram of the receiver driven as described above is shown in FIG.

The receiver first reads the received data (s71), first reads the type of data (s72) and checks whether the data has already been received in the reception recorder (s73).

This is a case where the response transmission of the normal reception completion is lost and the other party does not know whether or not the normal reception is successful and transmits it again at step s95 of FIG.

If the data has already been received (s74), a repeated reception response indicating that it has been repeatedly transmitted is transmitted (s74).

Otherwise, it is recorded as the first received in the reception register (s75) and transmits a normal reception response.

Subsequently, the processing method storage unit for each communication is searched (s77), the processing method is fetched (s78), and this is performed (s79).

As described above, the synchronous and asynchronous communication apparatus of the present invention supports asynchronous communication as well as synchronous communication to make a wider variety of communication program performers, so that the communication program can freely communicate more. It has the advantage of easy design of communication program.

Claims (3)

A communication apparatus for communication between communication application programs in a multi-working computer and communication between communication application programs on a network to which the multi-working computer is connected, comprising: a communication application performer for executing the communication application program; A transmitter for transmitting data according to a data transmission request given by the communication application program executor, a transmission recorder for recording information on the fact of transmission of the transmitter, and operated by the transmitter to drive the transmitter at regular time intervals A transmitter comprising an interrupt clock for periodically checking the transmission state of the transmitter; A receiver for receiving data transmitted from the transmitting unit, an input / output interrupt processor for controlling a reception operation of the receiver, a reception recording unit for confirming whether the data received by the receiver is identical to previously received data, and the received When the data is new data by the reception recorder consists of a receiver configured as a communication processing method storage for performing a corresponding communication processing method, wherein the transmitter, the receiver and the communication application program performer is separated and operated independently of each other. A synchronous and asynchronous communication device for network applications. A communication method for communication between communication application programs in a multi-working computer and communication between communication application programs on a network to which the multi-working computers are connected, wherein the communication application program calls a transmitter of a transmitter to transmit data. The transmitter storing and transmitting the data to a transmission data store; A second step of recording information on the fact of transmission after transmission of said first step in a transmission recorder and operating an interrupt clock for periodic inspection of transmission status; A third step of continuously transmitting data while the transmitter is driven at a predetermined time interval by the operation of the interrupt clock of the second step; A fourth step of operating the receiver by the operation of the input / output interrupt processor of the receiver when data is received from the third step; A fifth step of checking, by the receiver, whether the reception data is the same data as previously received data by performing the fourth step; If the data from the fifth step is not the same as the previous data, the receiver receives the data, and includes a sixth step of performing a communication process corresponding to the communication method storage for each communication to perform synchronization between communication application programs And synchronous and asynchronous communication method of a network application, characterized in that it can achieve asynchronous communication. The data transmission method of claim 1, wherein the transmission unit stores the data in the transmission data storage according to a data transmission request given by the communication application program and then performs lossless transmission through repeated transmission. Synchronous and asynchronous communication device of the network application, characterized in that it can be.