KR20010019816A - Apparatus and method for processing a message in a printer disk spool - Google Patents

Abstract

PURPOSE: The printer spooling apparatus and method in full electronic switching systems is provided to prevent the loss of messages output to a printer in a full electronic switching system. CONSTITUTION: If a message to be provided to the first printer is generated in a switching system, a message storage processor checks a message information storage state in a disk queue(S200). As a result, if the disk queue is not in a full state that the disk queue can store message information, the message storage processor stores the message in a disk file of a relevant printer. Then, the message storage processor stores message information in the disk queue(S202). However, in case that the disk queue is in the full state, the message storage processor clears the disk file and the disk queue(204).

Description

Printer spooling device and method of electronic changer system {APPARATUS AND METHOD FOR PROCESSING A MESSAGE IN A PRINTER DISK SPOOL}

The present invention relates to a printer spool (SPOOL; Simultaneous Peripheral Operation On-Line) of the electronic switching system, in particular, a printer spooling device and method of the electronic switching system is suitable for managing messages output to the printer in the electronic switching system It is about.

The electronic changer system uses the memory spool function to manage messages output to the printer.

Here, the memory spool function is used to efficiently schedule a job, and temporarily stores an input job in a data set on a memory, and then schedules and executes the job. Similarly, the output result can also be temporarily stored in a data set on the memory, and then printing can be performed.

That is, in this memory spool function, all the messages generated by the electronic switchgear system can be stored in one common buffer, and one queue can be managed for each printer port.

However, since the speed at which a message is output to the printer is slower than the rate at which the message is generated, there is a problem that efficient management is difficult due to insufficient capacity of the memory buffer. In particular, when operating multiple printers, if the queue for a specific printer port becomes full, messages for that printer need to be cleared, but if the common buffer becomes full, then There was a problem that the messages that occur in the process could not be processed. That is, there is a problem that a message loss may occur in the electronic switching system.

Accordingly, an object of the present invention is to provide a printer spooling apparatus and method for an electronic switching system, which prevents the loss of messages output from the electronic switching system to the printer. There is this.

According to an embodiment of the present invention for achieving the above object, in the printer spooling device in which data from the electronic switchboard is transmitted to the corresponding printer among a plurality of printers, corresponding to one of the printers, The same number of transmission circuits as printers that input and store data corresponding to a preset printer among the printers and selectively provide the stored data to the memory buffer according to the data storage state of the memory buffer; Provides a printer spooling device of an electronic switching system having a main processor for classifying data of the electronic switching system by a printer to be transmitted and selectively providing the data of the electronic switching system to the corresponding transmission circuit according to the data storage state of the corresponding transmission circuit. do.

In addition, according to another embodiment of the present invention, as a printer spooling method of the electronic switchboard system for providing data of the electronic switchboard to the printer using a disk file, a disk queue, a transmission circuit having a memory queue and a memory buffer, Check the message storage status of the disk queue, and if the disk queue is in the pool state, clear the disk file and disk queue to make it initial state. If the disk queue is not in the pool state, store the message in the disk file and manage the message in the disk queue. Storing the first step; Checking a message storage state of the disk queue to check whether the memory buffer or the memory queue is full if the disk queue is not empty and there is a message generated in the exchange system; If the memory buffer or the memory queue is not in the full state, storing the message in the memory buffer, storing the message management information in the memory queue, and clearing the message transmitted to the memory buffer in the disk file and the disk queue; An electronic switch including a fourth step of checking a message storing state of a memory queue, reading message information corresponding to management information in the memory queue, and sending the same to a printer, and clearing a message transmitted to the printer from a memory buffer and a memory queue. Provides a method of printer spooling in the system.

1 is a schematic block diagram of a printer spooling device according to a preferred embodiment of the present invention

2A is a flow diagram of a message processing procedure of a printer disk spool performed in a message storage processor in accordance with a preferred embodiment of the present invention.

2B is a flow chart of a message processing procedure of a printer disk spool performed in a message transfer processor according to a preferred embodiment of the present invention.

2C is a flow chart of a message processing procedure of a printer disk spool performed in a message output processor according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

100: message storage processor

110: first transmission circuit

111: disk file

112: disk queue

113: memory queue

114: message transfer processor

115: message output processor

120: second transmission circuit

130: third transmission circuit

140: memory buffer

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a schematic block diagram of a printer spooling apparatus according to the present invention, which includes a message storage processor 100, a first transmission circuit 110, a second transmission circuit 120, a third transmission circuit 130 and a memory buffer. 140.

Prior to the description, each of the transmission circuits 110, 120, 130 is composed of three as shown in the figure, but may be further added / reduced depending on the capacity of the exchange system, this fact is the present invention Those skilled in the art will readily know.

First, in each of the transmission circuits 110, 120, and 130, a disk file 111, a disk queue 112, a memory queue 113, a message transmission processor 114, a message output processor 115. Are included, and for convenience of explanation, hereinafter, only one transmission circuit, that is, only the first transmission circuit 110 will be described by way of example.

First, the disk file 111 is for storing only a message to be transmitted to a preset printer, that is, a first printer (not shown), and management information about messages stored in the disk file 111 as described below. Is stored in disk queue 112.

Accordingly, the message storage processor 100 may acquire information on whether the message is stored in the disk file 111 and its storage amount using management information in the disk queue 112. The message storage processor 100 continuously checks the management information in the disk queue 112. For example, if there is a message to be provided to the first printer, the message storage processor 100 checks whether there is space in the disk file 111 to store this message. It judges using the information in 112, and stores this message in the disk file 111 when there is space to store it.

Meanwhile, a plurality of printers are connected to the memory buffer 140, and printer messages stored in the disk file 111 are stored in the memory buffer 140 under the control of the message storage processor 100. That is, the message storage processor 100 checks whether there is free space in the memory buffer 140 to store the message of the disk file 111, and when there is free space, the message storage processor 100 sends the message in the disk file 111 to the memory buffer 140. To save.

Management information on the messages stored in the memory buffer 140 is stored in the memory queue 113 for each printer, and the message output processor 115 uses the management information in the memory queue 113 to provide a message to the first printer. If it is stored in the memory buffer 140 is determined and stored, it is read and provided to the corresponding printer, for example, the first printer.

The reason for using the memory buffer 140 is that the message storage processor 100 accesses the disk file 111 and when a problem occurs in the file system, the message storage processor 100 processes the message only in the memory directly without going through the disk.

On the other hand, in the above description, if the message is full in the disk file 111, i.e., if the disk file 111 is in a full state, the message transfer processor 114 may execute the disk file 111 and the disk queue ( 112 is cleared, but the data in the disk file 111 is provided to the memory buffer 140 if the disk file 111 is not in a pulled state.

That is, the disk file 111 is in a full state, as will be described later. Since the memory buffer 140 is in a full state, a message of the first printer stored in the disk file 111 is provided to the memory buffer 140. It means a state that can not be. Accordingly, since the message to be provided to the first printer cannot be stored in the disk buffer 111, that is, the message cannot be provided to the first printer, the message transmission processor 114 may use the disk file 111 and Clear the data in disk queue 112. Thus, no messages are provided to the first printer, but the messages may be provided to the remaining printers, for example, a second printer or a third printer.

In addition, the message output processor 115 searches the data information in the memory queue 113, and if it is detected that the data to be provided to the first printer is stored in the memory buffer 140, the message output processor 115 reads out the corresponding data to read the data information. 1 Provide to the printer.

Hereinafter, a message processing procedure of a printer disk spool according to a preferred embodiment of the present invention will be described in detail with reference to the flowcharts of FIGS. 2A, 2B, and 2C.

First, the message processing of the printer disk spool performed in the message storage processor 100 will be described in detail with reference to FIG. 2A.

In the exchange system, for example, when a message to be provided to the first printer occurs, the message storage processor 100 proceeds to step S200 to check the message information storage state in the disk queue 112. As a result of the determination in step S200, if the disk queue 112 is capable of storing message information, that is, the disk queue 112 is not in a full state, the message storage processor 100 proceeds to step S202. The message is stored in the disk file 111 of the printer 110 and the message information is stored in the disk queue 112.

However, if the determination result of step S200 indicates that the disk queue 112 is full of message information, that is, a full state, the message storage processor 100 proceeds to step S204 and the disk file 111 and the disk queue. Clear 112.

Next, the message processing procedure of the printer disk spool performed by the message transfer processor 114 in the first printer will be described in detail with reference to FIG. 2B.

The message transmission processor 114 checks the message information storage state of the disk queue 112 in step S300. As a result of the determination in step S300, if the disk queue 112 is not empty and there is a message generated in the exchange system, the message transfer processor 114 proceeds to step S302 to check the memory queue 113 and It is determined whether a space for storing a message or message information exists in the memory buffer 140 or the memory queue 113.

As a result of the determination in step S302, if the memory buffer 140 and the memory queue 113 are not in the full state, that is, the minimum space for storing messages and message information in the memory buffer 140 and the memory queue 113. If so, the message transfer processor 114 proceeds to step S304.

In step S304, the message transfer processor 114 stores the message in the disk file 111 in the memory buffer 140, stores the message information in the memory queue 113, and then proceeds to step S306 to process the disk file. Clear the corresponding message and message information stored in the 111 and the disk queue 112.

Finally, the message processing procedure of the printer disk spool performed by the message output processor 115 in the first printer will be described in detail with reference to FIG. 2C.

As shown in FIG. 2C, the message output processor 115 proceeds to step S400 to check the message information storage state of the memory queue 113. As a result of the determination of step S400, if the memory queue 113 is not empty, that is, a state where the minimum message and message information are stored in the memory queue 113, the message output processor 115 performs the step S402. In step 1), a predetermined message (for example, to be transmitted to the first printer) among the messages stored in the memory buffer 140 is provided to the first printer.

That is, in step S402, the message output processor 115 continuously checks the memory queue 113, and when a predetermined message comes in, reads the message information from the memory buffer 140 and retrieves the message from the memory buffer 140. Output to the printer port (not shown) of the printer.

The message output processor 115 proceeds to step S404 to clear the corresponding message in the memory buffer 140 and the memory queue 113.

That is, according to the present invention, when a large amount of messages are generated for a given printer while the printer is in operation and the corresponding disk buffer 111 is in a full state, the disk buffer and the disk queue of the corresponding printer are cleared, and the memory buffer 140 By clearing the messages for that printer, we can prevent the loss of other messages for other printers.

As described above, the present invention can operate the buffer without any restriction in terms of capacity, so that the printer can be operated without losing a message. In addition, when the capacity of the message buffer is increased, only the disk buffer needs to be increased, so it is easy to convert the system, and by setting a separate disk buffer for each printer, only the messages of the corresponding printer are cleared even when one disk buffer is full. It does not affect other printers. In other words, the independence of each printer can be implemented.

Claims (6)

In a printer spooling device in which a message from an electronic switch is transmitted to a corresponding printer among a plurality of printers through a memory buffer, The same number as the printers corresponding to one of the printers, which input and store messages corresponding to a preset printer among the printers and selectively provide the stored messages to the memory buffers according to the message storage state of the memory buffers. A transmission circuit of; A printer of the electronic switching system having a message storage processor for classifying messages of the electronic switching center for each printer to be transmitted and selectively providing the messages of the electronic switching system to the corresponding transmission circuit according to the message storage state of the corresponding transmission circuit. Spooling device. The method of claim 1, wherein the transmission circuit, A disk file capable of storing messages from the message storage processor; A disk queue capable of storing information about messages stored in the disk file; A memory queue capable of storing information of messages stored in the memory buffer; A message transfer processor for storing a message in the disk file in the memory buffer according to a storage state of information about a message stored in the disk queue, and for storing information about a message stored in the memory buffer in the memory queue; And a message output processor for transmitting only messages corresponding to the corresponding printer among the messages stored in the memory buffer to the corresponding printer according to the information stored in the memory queue. 3. The printer spooling device of claim 2, wherein the message storage processor clears the disk file and the disk queue when the storage state of the information about the messages stored in the disk queue is full. 3. The apparatus of claim 2, wherein the message transfer processor clears the disk file and the disk queue after storing information of a message stored in the memory buffer in the memory queue. 3. The printer spooling device of claim 2, wherein the message output processor clears the memory buffer and the memory queue after transmitting a message corresponding to the corresponding printer to the corresponding printer. A printer spooling method of an electronic switching system for providing a message of an electronic switching system to a printer using a disk file, a disk queue, a transmission circuit including a memory queue, and a memory buffer, Check the message storage state of the disk queue, and if the disk queue is full, clears the disk file and disk queue to an initial state, and if the disk queue is not full, stores the message in the disk file and stores the disk. A first step of storing message management information in a queue; Checking a message storing state of the disk queue, and checking whether the memory buffer or the memory queue is in a full state if the disk queue is not empty and a message generated in the exchange system exists; If the memory buffer or the memory queue is not in a full state, storing a message in the memory buffer, storing message management information in the memory queue, and clearing the message transmitted to the memory buffer in the disk file and the disk queue. Steps; A fourth step of checking a message storage state of the memory queue, reading message information corresponding to management information in the memory queue, sending the message information to the printer, and clearing a message transmitted to the printer from the memory buffer and the memory queue; Printer spooling method of an electronic switching system comprising a.