JPH1083364A - Data transfer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely transfer data without impairing the response of a server to a client by reserving only the storage area of data in the time zone of a large communicating amount on a network and to transfer data in the time zone of a small communicating amount at the time of transferring data by a client/server system. SOLUTION: In this system, a store area request information is transmitted to the server 3 from a store request means 8 before transferring data from the client 2, and a store area reserving means 14 secures a store area in a second storage part 13. Then, at a set time, the transfer of the data is requested to the client 2 from a data transfer request means 15 to transfer the data to the second storage part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transfer system of a client-server system in a network environment composed of personal computers and workstations.

[0002]

2. Description of the Related Art Usually, a local network (hereinafter referred to as a LAN) in a hospital has an image diagnostic apparatus such as an ultrasonic diagnostic apparatus, an X-ray CT, and an MNR, and a large capacity for storing and recording acquired image data. A storage device and a computer installed in an examination room or on a desk of a doctor who performs diagnosis are connected via a network, and data stored in the large-capacity storage device can be easily searched and browsed.

In this LAN, a coaxial Ethernet cable having a transfer rate of about 10 Mbps or a transmission cable using an optical fiber having a transfer rate of about 100 Mbps is used. Communication between devices that have been enabled. Recently, in this LAN type network, a computer called a server is used for storing and retrieving various image data, and individual computer terminals are provided for each user so as to request and transfer data retrieval to the server. (Hereinafter referred to as client) connected client / server systems have become widespread, and have the features of being able to centrally manage a large amount of data to be stored and reducing the load per client computer. Widely used.

[0004]

However, when a conventional client / server system is used in a hospital, it is necessary to transfer image data to a server or to refer to image data stored and recorded in a server at the time of diagnosis. The transfer to the client is performed intensively during the medical treatment hours.

[0005] For this reason, there is a problem in that the amount of data flowing through the LAN during the consultation time period is large, the response from the server to the client is reduced, and the operability of the system is deteriorated. The present invention provides a new data transfer system in a client / server system improved so that necessary data can be freely transferred and searched without deteriorating the response of the server even during a time period when many clients use the LAN. The purpose is to provide.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, when data is transferred from each client to a server, the size of a group of data to be transferred is set. The gist of the method is to transmit the data capacity to the area at a preset time, such as transmitting the data capacity in advance, reserving the corresponding area in the storage unit of the server, and reducing the amount of communication on the network. . Therefore, it is possible to reduce the traffic during the busy season of the network.

[0007] According to the second aspect of the present invention, in the first aspect of the present invention, the traffic of the network is constantly monitored, and when the traffic is reduced, the traffic is previously secured in the server. The method of transferring data to the area is the gist. Therefore, according to the second aspect of the present invention, data can be transferred according to network conditions. According to a third aspect of the present invention, in the first aspect of the present invention, a real data position notifying unit is provided on the server side, and even if the real data has not yet been transferred to the server, the real data position notifying unit is provided. The gist is a method of notifying a client that stores the data to a client that has requested the data search. Therefore, according to the third aspect of the invention, regardless of whether or not the data is transferred to the server, the client can always search for data.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A preferred embodiment in which the present invention is applied to a medical image storage system will be described below, and the present invention will be described with respect to image data. 1 is an overall configuration diagram of the present system, FIG. 2 is a block diagram showing a basic configuration, FIG. 3 is a diagram showing a configuration example of image data to which the present invention is applied, and FIG. FIG. 5 is a flowchart illustrating an example of a data configuration of request information, FIG. 5 is a flowchart illustrating a storage area reservation operation, FIG. 6 is a diagram illustrating an example of a data configuration of storage availability information, and FIG. FIG. 8 is a diagram illustrating an example of a storage area reservation file indicating a management file, and FIG. 8 is a flowchart illustrating a set time transfer operation.

In FIG. 1, 1 is a transmission line, and 2A,.
2N is a client, 3 is a server, 4A,
.. 4M is data of an ultrasonic diagnostic apparatus, an image diagnostic apparatus for acquiring diagnostic image data having a large data amount such as X-ray CT, MNR, and an input terminal for inputting a small data amount such as a patient ID. Acquisition devices, all of which are connected to the transmission path 1. 2k is another client, and 4a,..., 4k is a data acquisition device such as an image diagnostic device or a data terminal directly connected to such a client.

FIG. 2 is a block diagram showing a client, a server, and an image diagnostic apparatus in FIG. 1 for clarity of description, wherein 2 is a client, 3 is a server, and 4 is an image acquiring apparatus. FIG. 2 shows a case where the client 2 and the image diagnostic apparatus 4 are connected via the transmission line 1. Reference numeral 5 denotes first input / output control means for controlling data input / output of the client 2;
Is a first file management unit for managing data on the client 2 side, 7 is a first storage unit, 8 is a storage request unit for requesting to secure a data storage area in advance, and 9 is a first storage unit. Data transfer means for reading and transferring data held in the storage unit 7, and an input unit 10 for an operator to input a command to the client.

Reference numeral 11 denotes second input / output control means for controlling input / output of the server 3, reference numeral 12 denotes second file management means for managing data on the server side, and reference numeral 13 denotes a second storage unit. , 14 are storage area reservation means, and 15 is data transfer request means. Next, the function of each part or means will be described with reference to FIGS. The image data 20 acquired by the image diagnostic apparatus 4 is usually composed of data identification information 20a and an actual data part 20b as shown in FIG. 3, and the data identification information 20a is a patient name, a patient ID, It is a code for identifying image data selected from a site, a shooting date, a shooting device, a shooting condition, a serial number, and the like. The actual data portion 20b is, for example, 2000 pixels × 20.
The X-ray chest simple image of 00 pixels × 8 bits has a size of about 4 megabytes.

The image data 20 is received by the client 2. This reception timing is set as the start of the storage area reservation operation of FIG. 5 (step 101). The image data 20 is stored in the first storage unit 7 via the first input / output control unit 5, and the data identification information 20 a and the image data 20 are stored in the first file management unit 6. The stored address of the first storage unit 7 is stored.

Next, the storage request means 8 forms storage area request information 30 shown as an example in FIG. 4 (step 102). In this example, reference numeral 30a denotes server identification information of the server 3 which is the transmission destination of the storage area request information.
b indicates the client identification information of the transmission source client 2, 30 c indicates the data identification information, which may be the same as the data identification information 20 a of the image data 20.
0d is data capacity information indicating the capacity of the actual data section 20b.

These pieces of information constituting the storage area request information 30 are usually stored in the first file management means 6. On the other hand, the storage area request information 30 is transmitted via the first input / output control means 5 automatically or by an activation signal from the input unit 10 such as a keyboard. Received (step 103).

Based on the storage area request information 30, the storage area reservation means 14 obtains a total capacity of the data identification information 30c and the data capacity included in the data capacity information 30d (step 104). It is analyzed whether an area capable of storing is left in the second storage unit 13 (step 105). If it remains, the storage area reservation unit 14 registers the storage area reservation information described later in the second file management unit 12 (step 106), and stores the storage availability information through the second input / output control unit 11. The data is transmitted to the client 2 (step 107), and the storage area reservation operation ends (step 109). FIG. 6 shows an example of the storage availability information 40. 40a is client identification information;
Reference numeral 40b denotes data identification information, and reference numeral 40c denotes availability information indicating whether accumulation is possible or not. In the case of step 107, the availability information is permitted.

On the other hand, in step 105, it is determined that there is no remaining area in the second storage unit 13 for storing the combined capacity of the data identification information 30c and the data contained in the data capacity information 30d. In this case, the storage area reservation unit 14 rejects the permission information 40c of the storage permission information 40 and transmits the storage permission information 40 to the client 2 via the second input / output control unit 11 (step 108). The reservation operation ends (step 109).

The storage area reservation information described above is stored in the storage area reservation file 6 provided in the second file management means 12.
0, an example of which is shown in FIG. The storage area reservation information 50 in the storage area reservation file 60 includes 50a, 50
b, 50c, 50a indicates client identification information, 50b indicates data identification information, and 50c indicates data storage area address information secured in the second storage unit 13.

As described above, in the present invention, the operator who operates the client performs an operation of transferring required image data and the like to the server at the time of data generation, but actually transfers actual data. Instead, only the area is secured. On the other hand, the transfer of the actual data is performed in a predetermined time period, such as after the end of regular work, in order to avoid congestion of data traffic on the network line. Hereinafter, the set time transfer operation will be described with reference to FIG.

The time input to the data transfer request means 15 or the second file management means 12 is measured in advance by a clock built in the server, and is set as a start, and a set time transfer operation is started (step 201). At this time, the data transfer request unit searches the storage area reservation information 50 stored in the second file management unit 12 (step 2).
02), the data transfer request information including the client identification information and the corresponding data identification information is transmitted to the corresponding client via the second input / output control means 11, and the time measurement is started from the transmission of the data transfer request information. (Step 204).

On the other hand, in the client 2, the data transfer request information is received by the first input / output control means 5, and the data transfer means 9 reads the data identification information 50b in the data transfer request information, and performs the first file management. The corresponding address in the first storage unit 7 where the actual data corresponding to the data identification information 50b stored in the means 6 is stored, the corresponding data is read from the first storage unit 7, and the server identification is performed. Transfer data consisting of information and image data 20
Is transmitted to the server 3 via the input / output control means (step 205).

The transfer data is stored in a predetermined area of the second storage unit 13 by the data transfer request means 15 via the second input / output control means 11 (step 206).
Preferably, the information of the actual data registration is added to the storage area reservation file 60 (step 207), and the set time transfer operation ends (step 209). If there is no data transfer from the client 2 within a predetermined time, it is determined that there is no transfer (step 208), and preferably, "no transfer" information is added to the storage area reservation file 60, and the set time transfer operation ends. (Step 209).

The transfer according to the present invention described above has the following effects. (1) During medical treatment hours when the amount of data flowing on the LAN is large, only the storage request information and the storage availability information are exchanged. During the medical treatment hours, the response from the server to the client is reduced and the operability of the system is reduced. Can be solved. (2) An area corresponding to the amount of data is reserved in advance, and data can be reliably transferred when data is transferred. (3) By adding the actual data registration information to the storage area reservation file, the acquired data can be added before the next data transfer time, for example, at a sudden time such as midnight, for example, after a preset data transfer time, for example, When the system is started up in the early morning, a request for data transfer can be made again. (4) By adding “no transfer” information to the storage area reservation file, the server can detect an abnormality on the client side. (5) Since the history of data transfer is stored in the storage area reservation file, data transfer after the system failure can be accurately resumed.

Second Embodiment Next, a second embodiment of the present invention will be described below with reference to FIG. In this embodiment, the same members and means as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Therefore, the following description focuses on differences from the first embodiment.

This embodiment differs from the first embodiment in that a traffic amount measuring means 16 is provided in the server 3 for measuring the amount of communication flowing through the transmission line 1. The traffic volume measuring means 16 constantly measures the traffic volume flowing on the transmission line 1, and when the traffic volume becomes equal to or less than a predetermined traffic volume, the traffic volume measuring unit 16 sends the data transfer requesting unit 15 the first implementation. An actual data transfer operation similar to the set time transfer operation in the example is started.

This operation is used in conjunction with the set time transfer operation of the first embodiment. If the traffic volume decreases to a level that does not affect normal business even before the set time comes, the actual data is sent to the server as soon as possible. It can be stored. The transfer according to the present invention described above has the following effects. (1) The off-peak period of the network can be detected at any time, and the data can be efficiently transferred according to the network conditions as well as the set time.

Third Embodiment An actual search operation when the data transfer method according to the present invention is employed will be described below as a third embodiment with reference to FIG. In this embodiment, the same members and means as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Therefore, the following description focuses on differences from the first embodiment.

The client 2 has a data search unit 17 and the server 3 has a real data position notifying unit 18. The data search unit 17 transmits search request information including data identification information to the server 3, In the notifying unit 18, if the data requested by the search request information is not stored in the second storage unit 13, the actual data position notifying unit 18, based on the data of the second file management unit 12, Notifying the client 2 of the client that stores the data that has been found, and if the data requested by the search request information is stored in the second storage unit 13, the client 2 of the client 2 To the storage unit 7.

The above-described transfer according to the present invention has the following effects. (1) Even in a busy period of the network, urgently necessary data can be transferred immediately. The present invention may be configured as follows in addition to the above embodiments. (1) The input / output control means, file management means, accumulation request means and data transfer means of the client of the first embodiment are replaced by a personal computer functioning as a local server, and the input / output control means of the server, file management means Alternatively, the storage area reservation unit and the data transfer request unit may be replaced with a separate computer having a local server function and configured. (2) The input unit of the first embodiment may be replaced with a touch panel, a mouse, or the like and configured. (3) The system may be configured by using a plurality of servers in each embodiment.

[0029]

As described above in detail, according to the first aspect of the present invention, the response from the server to the client is reduced even in the medical treatment hours when the amount of data flowing on the LAN is large, and the system The problem that the operability of the system becomes worse can be solved, and the area corresponding to the data amount is reserved in advance, so that the data can be surely transferred. By adding the registration information, it is possible to request a data transfer again for the acquired data at the sudden time before the next data transfer time, and to add the “no transfer” information to the storage area reservation file. This allows the server to detect errors on the client side on the server side, and keeps a history of data transfer in the storage area reservation file. The data transfer can accurately resume.

According to the second aspect of the present invention, the off-period of the network can be detected at any time, and data can be efficiently transferred according to the network conditions. Claim 3
According to the invention described in (1), urgently necessary data can be transferred immediately even during a busy period of the network.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a system according to the present invention.

FIG. 2 is a basic configuration diagram of the present invention.

FIG. 3 is a diagram showing the configuration of image data according to the present invention.

FIG. 4 is a diagram illustrating a configuration of storage area request information according to the present invention;

FIG. 5 is a flowchart of a storage area reservation operation according to the present invention;

FIG. 6 is a diagram showing the structure of storage availability information according to the present invention;

FIG. 7 shows a storage area reservation file according to the present invention.

FIG. 8 is a flowchart of a set time transfer operation of the present invention.

FIG. 9 is a configuration diagram of a second embodiment of the present invention.

FIG. 10 is a configuration diagram of a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission path 2A-2N Client 2a-2k Client 3 Server 4A-4M Data acquisition device 4a-4k Data acquisition device 5 First input / output control means 6 First file management means 7 First storage unit 8 Storage request means Reference Signs List 9 data transfer means 10 input unit 11 second input / output control means 12 second file management means 13 second storage unit 14 storage area reservation means 15 data transfer request means 16 traffic volume measurement means 17 data search means 18 actual data Position notification means 20 Image data 30 Storage area request information 40 Storage availability information 50 Storage area reservation information 101 to 109 Steps of storage area reservation operation 201 to 209 Steps of set time transfer operation 60 Storage area reservation file

Claims (3)

[Claims] In a data transfer method between a client and a server for transferring and storing data held by a client to a server, the client includes a first input / output control unit, a first file management unit, and a first file management unit. A storage unit, a storage requesting unit, and a data transfer unit. The server includes a second input / output control unit, a second file management unit, a second storage unit, a storage area reservation unit, A storage area request that includes data transfer request means and includes client identification information for identifying a client, data identification information of data held in the first storage unit, and data capacity information indicating a capacity of the data; The information is generated by the storage requesting means, transmitted from the first input / output control means to the server, received by the second input / output control means, and stored in the data capacity information. Is stored in the second storage unit by the storage area reservation unit, and storage area reservation information including the identification information of the client, the data identification information, and the address information indicating the location of the area is stored in the second storage unit. And information indicating that the area has been reserved in the second storage unit is transmitted to the corresponding client. At a set time, the information is transmitted to the client based on the storage area reservation information. The data transfer request is made by the data transfer request means, and based on the transfer request, the data is read out from the address of the corresponding data managed by the first file management means in the first storage unit by the data transfer means. Transmitting the data to the server and writing the data to the area secured in the second storage unit. Transfer method. 2. The method according to claim 1, wherein the server has a traffic amount measuring means for detecting a traffic amount on the network, and issues a data transfer request to the client according to the set time and / or the traffic amount. Item 2. A data transfer method between a client and a server according to Item 1. 3. A client having data search means, a server having real data position notifying means, and transmitting search request information including data identification information from the data search means to the server, wherein said real data position notifying means is provided. In the above, when the data requested in the search request information is not stored in the second storage unit, the actual data position notifying means is configured to store the requested data based on the data of the second file management means. The client / server data transfer method according to claim 1, wherein the corresponding client storing (1) is notified to the client.