JP2654230B2 - File transfer method - Google Patents

Description

The present invention relates to a system including a main processing unit and a plurality of child processing units, wherein function information required by a child processing unit when a download request is issued is transferred from a storage unit of the main processing unit. The purpose of the present invention is to save the storage capacity of the storage means and reduce the load on the main processing unit due to loading. The main processing unit includes a plurality of child processing units, and the child processing units achieve their respective functions. Necessary function information is stored in storage means provided in the main processing unit, and in a system in which the function information is transferred from the main processing unit to the child processing unit when a download request is generated, a plurality of functions required by each of the child processing units are stored. Function information belonging to at least one group, stored in the storage unit as one file for each group, Upon occurrence, a file containing function information required by the child processing device is selected, and the file is transferred to the child processing device.

The present invention relates to a main processor (eg, a packet switch) and a plurality of child processors (eg, a packet assembler / disassembler).
The present invention relates to a system in which function information required by a child processing device when a download request occurs is transferred from a storage unit of the main processing device.

In order to be able to use a terminal or the like which does not have a packet assembling / disassembling function in a packet switching network, a packet assembling / disassembling device (a packet assembling / disassembling device (switching a character string or the like into a packet) and performing inverse conversion thereof is used. ACP). The programs and data required for the packet assembling / disassembling apparatus to achieve its functions are stored as files in an auxiliary storage device of the packet switch. Occurs, and a file corresponding to a program or the like according to a request is transferred from the auxiliary storage device to the packet assembling / disassembling device by the packet switch.

In such a packet switching network, packet assembly /
Along with the addition of a disassembly device, the capacity of the auxiliary storage device for storing files tends to be insufficient, and the load on the main processing unit due to loading tends to increase. There is a demand to save money and reduce the load on the main body processing device due to the loading.

2. Description of the Related Art A conventional file transfer method will be described with reference to FIG.

Reference numeral 11 denotes a main processing unit such as a packet switch, and 12, 13, and 14 denote child processing units (ACP1 to ACP3) of a packet assembling / disassembling device connected to the main processing unit 11. The main processing unit 11 includes a main storage device 15 and an auxiliary storage device in addition to a control device (not shown).
The sub processors 12, 13, and 14 include a control device and a main storage device, although not shown. The child processing unit 12 has functions a and b, the child processing unit 13 has functions a and b, and the child processing unit 14 has functions a, b, and c. The programs and data (functional information) stored in the auxiliary storage device 16 are transferred to the main storage devices of the child processing devices 12, 13, and 14, and the child processing devices 12, 13, and
This is realized by the 14 control devices appropriately executing this.

The auxiliary storage device 16 of the main processing unit 11 has
Three files A, B and C corresponding to 12, 13 and 14 are stored,
File A is function information for performing functions a and b, file B is function information for performing functions a and c, and file C is function information for performing functions a, b, and c.

However, when a download request occurs, the main processing unit 11 retrieves the corresponding file from the auxiliary storage device 16 to the main storage device 15 based on the request, and then transfers the file to the corresponding child processing device.

However, in the case of the conventional method as described above,
There were the following problems.

That is, since the file including the function information required by the child processing device is stored in the auxiliary storage device corresponding to each child processing device, when the number of the child processing devices increases,
The storage capacity of the auxiliary storage device may be insufficient.

In addition, since the function information for performing the same function exists in each of a plurality of files, for example, in the case of FIG. 6, since the function A exists in any of the files A, B, and C, the function is upgraded. In some cases, all files need to be modified, and management is complicated.

Further, when a download request is issued from each child processing device at the same time, it is necessary to sequentially read a file corresponding to each child processing device from the auxiliary storage device to the main storage device, which imposes a heavy load on the main processing device.

The present invention has been made in view of such a point,
It is an object of the present invention to provide a file transfer method capable of saving the storage capacity of the main processing unit and reducing the load on the main processing unit due to loading.

Means for Solving the Problems As shown in FIG. 1, this system comprises a main processing unit 1 and a plurality of child processing units (ACPs 1 to 3) 2, 3, and 4, and the child processing units 2, 3, and 4 Are stored in the storage unit 5 provided in the main processing unit 1 and required from the main processing unit 1 when the download request occurs. This is applied to a system that transfers the corresponding function information to 2, 3, and 4.

The storage unit 5 of the main processing unit 1 stores the above-mentioned child processing units.
Multiple function information required by 2,3,4 (ca, e, r, g,
) Belong to at least one group and are stored as one file for each group. In the case of FIG. 1, there are two groups, and file A is function e,
File B is composed of functions C, G, and L.

As shown in FIG. 2, all of the functional information required by each of the child processing devices 2, 3, and 4 (including the case where other child processing devices are connected) is stored in each bit of one word. The function information required by each of the child processing devices 2, 3, and 4 is expressed as one-word data based on the correspondence (hereinafter, this data is referred to as first data). ), The function information contained in each file stored in the storage means 5 is expressed as one-word data based on the correspondence (hereinafter, this data is referred to as second data). For example, since the packet assembling / disassembling apparatus 2 requires a function and an e, H'201
0, file A is H'2110 consisting of function information
Becomes

When a download request occurs, the main processor 1 compares the first data of the child processors 2, 3, and 4 to be transferred with the respective second data by, for example, a logical operation as shown in FIG. The files to be transferred to the devices 2, 3, and 4 are determined, and the corresponding files are transferred.

That is, the main processing unit 1 transmits the first data (H'2010) of the child processing unit 2 to be transferred and the second data (for example, the file) assigned to one of the files stored in the storage unit 5. A is ANDed with H'2110) as A, and the result (H'2010) and the first data (H'201) are obtained.
The exclusive OR (ECR) of (0) is obtained, and if the result is “0”, this file (file A) is transferred to the child processing device 2; otherwise, another file (for example, file B)
The same processing is performed for the file and the file to be transferred is determined.

Operation This method does not store the files (A to C) corresponding to the respective child processing devices as in the prior art shown in FIG. 6, but stores the respective files in the storage means of the main processing device. For some of the processing devices, a file that is the union of the functions required by these is stored, and when a download request occurs, the corresponding file is transferred to the corresponding child processing device. The number of files to be stored in the storage unit of the processing device can be smaller than the number of child processing devices, so that the capacity of the storage unit can be reduced, and some of the functions can be changed. In that case, it is only necessary to correct one corresponding file, so that the management becomes easy.

Further, in the main processing unit, it is possible to reduce the number of times of access to the storage unit (for example, processing in which the storage unit is used as an auxiliary storage device and a file is retrieved from the auxiliary storage device to the main storage device), The load on the main processing unit can be reduced. Further, when a child processing device is added, if a file containing the function information required by the child processing device already exists in the storage means, it is necessary to newly add a file corresponding to this. Absent.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 4 is a block diagram showing the configuration of the embodiment of the present invention. In the figure, reference numeral 21 denotes a packet switch as a main processing unit, and the packet switch 21 includes a control unit (CC) 22,
It comprises a main storage (MM) 23, an auxiliary storage (DK) 24, and a line interface 25.

The packet switch 21 is connected to a plurality of packet assembling / disassembling devices 26, 27, and 28 as child processing devices. Packet assembling / disassembling devices 26, 27, 28 are control devices (CC) 26a, 27a,
28a and main storage devices (MM) 26b, 27b, 28b. Each packet assembling / disassembling device 26, 27, 28 has a terminal 26c, 27
c and 28c are connected.

The packet assembling / disassembling device 26 forms a functional unit and a unit,
The packet assembling / disassembling device 27 has a function and a function, and the packet assembling / disassembling device 28 has a function and a function. These packet assembling / disassembling devices 26, 27 and 28 have a second
The download file name is given based on the correspondence shown in the figure. That is, H'2010 is assigned to the packet assembling / disassembling device 26, and H'0110 is assigned to the packet assembling / disassembling device 27.
However, H'0440 is assigned to the packet assembling / disassembling device 28.

The ACP file correspondence table as shown in Table 1 is stored in the auxiliary storage device 24 of the packet switch 21.
ACP file A corresponding to the contents of this ACP file correspondence table
To C are stored.

FIG. 5 shows a flowchart of the processing of the packet switch and the packet assembling / disassembling apparatus.

First, when there is a download request from the packet assembling / disassembling device (in this case, the packet assembling / disassembling device 26) (step 501), the packet exchanger 21 receiving this request transmits the file (A) stored in the auxiliary storage device 24. .. C) is loaded into the main storage device 23 (step 502). In step 503, the logical product (AND) of the download request file name (H'2010) and the ACP file name (H'2110) loaded into the main storage device 23 is calculated. As a result, (H'2010) is obtained.

Next, the result of the logical product in step 503 (H'201
0) and an exclusive OR (EOR) of the download request file name (H'2010) (step 504). Step 50
It is determined whether the result in step 4 is "0" (step 50).
5) If "0", proceed to step 506; if other than "0", proceed to step 507. In step 505, "0"
Otherwise, in step 507, it is determined whether or not the next file exists in the auxiliary storage device 24. If there is, the next ACP file (for example, file B) is loaded in the main storage device 23 in step 508, Return to step 503. Step 5
If the next file does not exist in 07, a message indicating that there is no data is output and the operator recognizes it.

In step 505, if the value is "0", the file A is transferred to the main storage device 26b of the packet assembling / disassembling device 26 (step 506), and the process of the packet switch 21 for the corresponding download request ends. In the packet assembling / disassembling device 26 to which the file A has been transferred,
From this file A (having functions E, R, and F), the functions F and E to be used are extracted (step 510).
Control processing and the like are performed based on E (step 511).

According to the present embodiment, each packet assembling / disassembling device 26, 27,
The functions required by 28 are expressed as one-word data in which each function and each bit have a predetermined correspondence relationship,
For some of each packet assembler / disassembler,
A file in which the union of the functions necessary for the packet assembling / disassembling apparatus is stored is stored, one-word data is added to this file based on the above-described correspondence, and a logical operation is performed when a download request occurs. File to be transferred. This makes it possible to reduce the number of files that need to be stored in the auxiliary recording device 24, thereby reducing the pressure on the capacity of the auxiliary storage device 24 and changing the function information due to a version upgrade or the like. In such a case, it is only necessary to correct one corresponding file, so that the management becomes easy. further,
When the packet assembling / disassembling device 29 is added, for example, in FIG. 4, when the packet assembling / disassembling device 29 including the control device 29a and the main storage device 29b is added, the packet assembling / disassembling device 29 is added. If there is already a file containing the function information (H, ヲ) necessary to perform the function to be performed (File C shown in Table 1), it is not necessary to add a file corresponding to this. Incidentally, 29c is a terminal connected to the packet assembling / disassembling device 29.

Note that there are two types of download requests: a case where the packet assembling / disassembling device is activated or the like in the packet switch, and a case where the packet assembling / disassembling device is requested by the packet assembling / disassembling device side by adding a packet assembling / disassembling device.

Effect of the Invention Since the present invention is configured as described in detail above, when a child processing device is added, a file containing function information required by the child processing device is already stored in the storage means of the main processing device. In this case, it is not necessary to create a new file, and the number of files stored in the storage unit of the main processing device is smaller than the number of child processing devices.
This has the effect of reducing the pressure on the capacity of the storage means.

When a part of the function is changed, it is sufficient to change only the file including the function, thereby facilitating the management. Further, in the main processing unit, the number of accesses to the storage unit can be reduced. It is possible, and there is also an effect that the load on the main processing unit can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the principle of the present invention, FIG. 2 is a diagram showing an example of a correspondence relationship between various functions and each bit in the present invention, and FIG. FIG. 4 is a block diagram showing a configuration of an embodiment of the present invention; FIG. 5 is a block diagram showing a configuration of an embodiment of the present invention; FIG. FIG. 6 is an explanatory diagram of the prior art. 1 ... main body processing device, 2,3,4 ... child processing device, 5 ... storage means.

Claims (2)

(57) [Claims] The present invention comprises a main processing unit (1) and a plurality of child processing units (2, 3, 4), and functions required for the child processing units (2, 3, 4) to achieve their respective functions. The information is stored in the storage means (5) provided in the main processing unit (1), and when a download request is issued, the main processing unit (1) sends the child processing unit (2,
In the system in which the function information is transferred to (3, 4), a plurality of pieces of function information required by each of the child processing devices (2, 3, 4) are stored in a number smaller than the number of the child processing devices. Each file belongs to a group and is stored in the storage means (5) as one file for each group, and contains the function information required by the child processing devices (2, 3, 4) when a download request occurs. A file transfer method wherein a file is selected and the file is transferred to a child processing device (2, 3, 4). 2. The file transfer method according to claim 1, wherein all of the function information required by each of the child processing devices (2, 3, 4) is associated with each of a plurality of bits on a one-to-one basis. The skill information required by each of the child processing devices (2, 3, 4) is expressed based on the correspondence relationship as first data, and the first data is stored in the storage unit (5). The function information contained in each of them is expressed based on the correspondence relationship as second data, and when a download request is issued, the main processing unit (1) sends the corresponding child processing unit (2, 3, 4). Of the first data and the second
By comparing the data with the logical operation, the child processor (2,3,
4) A file transfer method characterized in that a file to be transferred is determined.