JP5486649B2 - Data reference system, document display system, and medical information system - Google Patents

Description

The present invention relates to a computer system that refers to or displays data of another computer, and also relates to a document display system and a medical information system that use the computer system.

Conventionally, a database management system (DBMS) has been used to manage various data in a unified manner and refer to the data. In particular, a relational database management system (RDBMS) that is implemented in a computer that serves as a database server and that searches and transmits data in response to a query from an external client terminal and manages a plurality of data tables using relations. It has been known. RDB
DBMS represented by MS is, for example, SQL (Structured Query La
The query command issued from the client terminal is received using a query language such as “nugage”, data is retrieved according to the query command, and the data is provided to the client terminal. The client terminal transmits a query command tailored to the DBMS and displays the received data for providing to the user.

An information system constructed using a DBMS such as an RDBMS is used for various kinds of work. In particular, such operations include making decisions using various data in combination, and for the purpose of making decisions, the data in the database is quickly processed and displayed in the desired form. There is a demand to do. As an example, there is a medical information system for uniformly handling various types of examination information performed in medical institutions. In a large medical institution, a large number of individualized inspection systems are used. For example, diagnostic imaging device,
A blood test apparatus or the like operates as a separate test system. The diagnostic imaging apparatus is, for example,
For MRI and X-ray CT, an inspection system that stores image data for diagnostic imaging in a database is used. As a result, for example, images are acquired for each patient, for each region, and for each inspection date, and stored in the database. Accumulated. The blood test apparatus analyzes blood collected from a patient by a plurality of test apparatuses such as a biochemical automatic analyzer and accumulates the data in a database. For example, the doctor makes a decision such as diagnosing the medical condition of the patient and making a treatment plan by simultaneously viewing the image diagnosis data and the blood test data. In order to smoothly perform such work using a plurality of data, a computer terminal of a medical information system used by a doctor is required to acquire necessary data from a plurality of databases with different specifications and observe the results. It is desirable to operate so that it can be easily performed.

In order to cope with such a situation, a technique for displaying data acquired from a plurality of DBMSs in a medical information system on a computer terminal is disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2003-133).
-196389). Patent Document 1 discloses a sheet-type inspection result display method in which inspection data can be easily acquired from departmental RDBMS in association with inspection items and dates. FIG. 10 is a network diagram showing a logical configuration of the conventional data reference system 500. As shown in FIG. 10, in the data reference system 500, the database server computers 502, 504, and 506 having the RDBMS system for managing the inspection data and the clients 512, 514, and 516 are connected by a common network 580. Clients 512 to 516 access each database server computer 502 to 506 individually.

In addition, as a method for displaying data on a computer terminal in a medical information system,
For example, the Yaghee EagleView system has been developed (Non-Patent Document 1). Non-Patent Document 1 discloses a technique for arranging data according to a time series.
JP 2003-196389 A Author unknown, “Product Information, Yahgee EagleView”, [online], Dream Access, Inc. [Final Search on March 24, 2006], Internet <URL: HYPERLINK "http://www.yahgee.jp/products/overview .html "http://www.yahgee.jp/products/overview.html>

When query commands for a database server computer (hereinafter referred to as “DB server”) of the inspection system are issued from a large number of client terminals (hereinafter referred to as “CL terminals”) 512 to 516 as shown in FIG. Access concentrates on 506 DB
A high load is applied to the servers 502 to 506 and the RDBMS operating there. In particular, the DB servers 502 to 506 have inputs 502I, 504I, and 506I from the respective inspection systems.
Therefore, if the inspection data or the like and data access from the CL terminals 512 to 516 occur simultaneously, this load may become excessive. In order to prevent this, dedicated servers 502M, 504M, 5 for processing queries from the outside, such as copying and storing the database of the inspection system, as in the data reference system 500 ′ shown in FIG.
It is also possible to provide 06M. However, in this case, a time lag occurs until the latest data can be referred from the CL terminals 512 to 516. It is also necessary to prepare two sets of expensive RDBMSs for each inspection system.

In general, when individual DBMSs are used for each of a plurality of business systems, the databases of the individual DBMSs are often designed with completely different design concepts. For example, in the case of a medical institution, a database is often designed based on a completely different design concept for each inspection system. Furthermore, database design in individual DBMSs is often considered in consideration of the efficiency in performing the business independently, based on the judgment at the time of constructing the system. Thus, usually, as individual business systems are updated as technology advances, database designs are often updated. In such a case, in order for the CL terminal to refer to the data of the updated database of each business system as before, the software related to the DMBS of the updated business system is updated. Alternatively, it is necessary to add an interface server for converting data and convert all the query commands before update to those of the updated DBMS. Updating the software of a CL terminal requires a great deal of labor when a large number of CL terminals are used.
In addition, if an interface server is added, the response when calling data from the CL terminal is delayed.

Furthermore, in a system that displays data in chronological order, different data can be called from a single management screen, but management that reflects how the data was used in actual work may be difficult, There may be a risk that important data used in the judgment may be lost.
An object of the present invention is to solve at least some of the above problems.

In the present invention, there is provided a data reference system including a first computer and a second computer connected to a computer network having a number of data servers having databases, and any of the computers connected to the computer network A display terminal processing unit for displaying data is operating, and each of the first computer and the second computer includes a repository unit that holds data that is a subset of the database, An index data storage unit for storing index information for searching data, a process for receiving update information of data corresponding to the data in the repository unit from another computer connected to the computer network, and data used for display Take Processing for accepting a request from the display terminal processing unit to perform, processing for searching the updated data corresponding to the request from the repository unit using index information of the index data storage unit, and the request If the corresponding updated data is in the repository unit, the updated data is converted to data in the format for the display terminal processing unit as necessary, and the response is sent to the display terminal processing unit as a response to the request. A node operation unit including a processing engine unit that performs processing to be transmitted, and data from the repository unit of the first computer and the second
A data reference system is provided in which data from a repository unit of a computer is associated with each other and displayed by the display terminal processing unit.

A database is a set of data that stores various data that are the basis of decision making in business operations in a searchable state. For example, patient ID used in a medical institution,
It is a database of inspection result data accumulated for each inspection item and inspection time (or inspection date). The data server is a computer that manages a database, and is typically a computer that is operated by a server OS.

The computer network is an arbitrary computer network by wire or wireless, and includes a LAN (Local Area Network), a WAN (Wide Ar).
ea Network), the Internet, an intranet, or any other form of computer network. A data server is connected to the computer network, and a first computer and a second computer are connected.

The display terminal processing unit is a functional unit for displaying data, realized by a processing process for performing processing for operating a computer as a client terminal. The display terminal processing unit includes, for example, a user interface unit such as a GUI, a communication unit, an image display unit,
By using an input unit or the like, the computer is operated as a client terminal.
The computer that operates as a client terminal by the display terminal processing unit is any computer connected to the above-described computer network, and may be a computer different from the first and second computers. The same computer as the first computer or the second computer may be used.

A database subset refers to a collection of data that includes a portion of the data rather than all of the data in the database. The repository unit that holds data serving as a subset is a storage area that is realized by some storage means and is logically distinguished from others. The repository unit may be a storage unit of a storage database, may be configured by a part of the OS file system, and is a storage unit of any implementation mode that holds a subset of data.

The index data storage unit is a storage area that stores index information, is realized by some storage means, and is logically distinguished from others. This index information is index data for searching the data in the repository unit. The index information only needs to be configured to be searchable in the index data storage unit. For example, the index information is recorded in association with the data position (address) of the item in the repository unit. It is data.

Note that a volatile storage medium or a nonvolatile storage medium of a computer can be used as the storage means. An example of the volatile storage medium is a main storage device such as a RAM, and the nonvolatile storage medium is an auxiliary storage device such as a hard disk drive.

The data corresponding to the data in the repository part refers to data obtained from the same target sufficient to obtain the data in the repository part. For example, the same data as the repository part data,
Data that includes the data in the repository as a part, and updated data for the same inspection items as the data in the repository. The data update information refers to any information that directly or indirectly indicates whether data has been updated, and includes, for example, a data hash value and a time stamp indicating time. Accepting this update information from another computer means that, for example, a computer that has previously provided data in the repository unit to this node operation unit receives information indicating the presence or absence of the update.

A request from the display terminal processing unit for acquiring data is data transmitted by the display terminal processing unit that operates the computer as a client terminal in an attempt to display some information on the display device of the computer on which the computer is operating. This is a request.

The updated data corresponding to the request is data that has been confirmed to have been updated with reference to update information related to the data specified by the request. In the case of data that is updated from time to time, the confirmation of the update may be confirmed indirectly, for example, because the time elapsed since the last update is sufficiently short. Also,
The process of accepting the above update information from another computer may be performed after receiving the request. The case where the updated data corresponding to the request exists in the repository unit refers to the case where the data in which such update has been confirmed exists in the repository unit.

The updated data is converted into data in a format for the display terminal processing unit as necessary. The case where the conversion is unnecessary is, for example, a case where the display terminal processing unit can display the data in the repository unit as it is or after being converted inside. When conversion is necessary, for example,
This is the case when the data in the repository is in a format for other individual tasks and the display terminal processing unit cannot be used directly, or when extra fields are included and communication is wasted. The data whose format is converted as necessary is transmitted to the display terminal processing unit as a response to the request.

In this data reference system, the data from the repository unit of the first computer and the data from the repository unit of the second computer are associated with each other and displayed by the display terminal processing unit. A computer that operates the display terminal processing unit by separately referring to the data in the database using the first and second computers and displaying the data on the display terminal processing unit (
The client terminal) can display the data held by the first computer and the second computer in association with each other without referring to the database, can prevent concentration of access to the data server having the database, and the display terminal processing unit. Response from the computer that operates is improved.

In the present invention, the processing engine unit determines whether the repository unit holds data corresponding to the request based on the index information, and there is no data corresponding to the request in the repository unit. A process of transmitting an additional request for acquiring additional data corresponding to the request to a node operation unit of another computer connected to the computer network, and the additional request as a response to the additional request. It is preferable to further perform a process of acquiring the additional data corresponding to 1 from the other computer. In this case, the processing engine unit further stores the additional data acquired from the other computer by the additional request in the repository unit, and receives a request for acquiring the data again. It is more preferable to perform processing for transmitting data based on the additional data of the repository unit as a response to the request. Alternatively, the computer further includes a third computer connected to the computer network, and the third computer includes a repository unit that holds data that is a subset of the database, and index information for searching the data in the repository unit. An index data storage unit to store, a process of receiving update information of data corresponding to the data of the repository unit from another computer connected to the computer network, the first computer or the second computer
Processing for accepting the addition request from the processing engine unit of the computer, processing for searching additional data corresponding to the addition request from the repository unit using index information of the index data storage unit, and corresponding to the addition request When the additional data is in the repository unit, the first data is sent as a response to the addition request.
A relay node operation unit including a computer or a relay processing engine unit that performs processing for transmitting additional data to the processing engine unit of the second computer, and the additional data is transferred to the node operation unit of the first computer. Alternatively, it is more preferable that any one of the node operation units of the second computer receives and displays it by the display terminal processing unit.

Here, the other computer means a computer that operates the node operation unit among any other computers connected to the network. For example, a second computer viewed from the first computer and a first computer viewed from the second computer are included.

If data lacking in the node operation unit is acquired from the node operation unit of another computer, the node operation unit of the first or second computer included in the data reference system is
Data other than data stored by itself can be transmitted in response to a request from the display terminal processing unit. The display terminal processing unit does not need to handle all requests by itself. Furthermore, by storing additional data acquired from the node operation unit of another computer in its own repository unit, it is possible to respond to the request again without the assistance of the node operation unit of the other computer. Data can be automatically arranged so that the data reference system can respond quickly to requests from the display terminal processor.

Further, the third computer operates a relay node processing unit including a relay processing engine unit that provides necessary data in response to an addition request from the first or second computer. Thus, the first or second computer acquires the additional data by sending an additional request to the third computer having the relay node processing unit rather than directly acquiring the updated data from the data server. It is possible to obtain a quicker response when necessary while preventing concentration of access to the network.

In the present invention, the update information acquired from another computer includes a hash value of updated data in the other computer in association with the updated data, and the index information in the index data storage unit is , Including the hash value of the data in the repository unit, and the processing engine unit, when the hash value in the index information of the index data storage unit is different from the hash value included in the update information, the update information The updated data is acquired from the other computer that has acquired the data, stored in the repository unit, and the hash of the data included in the update information is added to or overwritten on the index information of the index data storage unit Is preferred.

The hash value of the data is a hash or checksum generated from the data by a message digest function (hash function) such as MD5, and is stored in association with the updated data. The calculation of the hash function can be performed and stored when another computer updates the data. When the update information is transmitted to the first computer or the second computer that operates the processing engine unit, the hash value is included as a part of the update information. By managing the update by the hash value, it is possible to confirm the update with less communication data than to confirm the update by the data itself.

In the present invention, the update information acquired from another computer corresponds to the updated data with a hash value of updated data in the other computer and a time stamp indicating the time when the data was updated. And when the hash value in the index information is different from the hash value included in the update information and the time stamp of the index information is the same as the time stamp included in the update information For this, it is preferable to perform a process of sending a falsification warning notification to at least one of the computers connected to the computer network.

By using the hash value of the data, it is possible to check whether or not the data has been changed while suppressing the amount of data to be compared. By combining this with the comparison of time stamps, it is possible to detect a case where the hash value is changed although the time stamp is not changed and the data should not be changed. In such a case, there is a possibility that the data itself has been tampered with so that the time stamps are intentionally matched, so that the possibility that the data has been altered is warned. The security of the data reference system can be ensured by sending a falsification warning notification to one of the computers.

In the present invention, the processing engine unit sends information for identifying a reference source that is a computer or a processing process that has transmitted a request for acquiring data in the repository unit to the data repository unit or the index data storage unit. It is preferable to store and notify the reference source of the update when the data in the repository unit is updated. In this case, the processing engine unit further stores the information for specifying the reference source and the information for specifying the type of data in any one of the computers connected to the computer network. It is preferable to enable log data collection with data types.

The computer or processing process as a reference source refers to another computer, a node processing unit of another computer, or a display terminal processing unit. Computer is the host name of the computer,
It can be specified by an IP address, a MAC address, a CPU ID, or the like. The process name can be specified by the process ID, the name of the operating program, and the like. In this configuration, the identified reference source is saved, and when the data in the repository unit is saved, the fact that the reference source has been updated is notified. In a file system of a computer, a file to be referred to by a process can be specified by the position of a known file tree, and this notification can be written to the file, so that the process can be substantially specified and notified. This notification can be performed in various forms, but can be performed by issuing a message or signal notifying only whether there is an update, or by transmitting update information including a data hash value or a time stamp. The reference source can detect whether or not the data has been updated based on the notification, and can issue a request for updating the data in its own repository unit.

In the data reference system of the present invention, the data displayed in the display terminal processing unit includes first partial data including confidential information and identified by an ID, and second partial data including only non-sensitive information, A request to acquire one partial data is transmitted by specifying the data to be acquired by the ID, encrypted from the display terminal processing unit to the node processing unit of the first computer, and the node processing unit of the first computer , The data including the first partial data and the hash value of the ID is encrypted and transmitted to the display terminal processing unit, and the request for obtaining the second partial data is determined by the hash value of the decrypted ID. The data to be acquired is specified and transmitted from the display terminal processing unit to the node processing unit of the second computer, and the second computer The node processing unit transmits data including the second partial data to the display terminal processing unit, and includes the confidential information included in the decrypted first partial data and the non-confidential information included in the second partial data. Are preferably displayed in association with each other by the hash value of the ID by the display terminal processing unit.

In this aspect of the data reference system, the confidential information included in the first partial data refers to information that should be treated as confidential. The non-confidential information included in the second partial data is information that is not required to be handled confidentially unless it is associated with the confidential information, but is required to have equivalent confidentiality by being associated with the confidential information. Examples of confidential information are patient attribute information and examination items (information defining which examination is performed) in a data reference system used for an examination system in a medical institution, for example. An example of non-confidential information is inspection result data. In other words, if the test items and test result data are not associated with patient attributes that are confidential information, it is not known which patient they belong to, and it cannot be said that high confidentiality is required. If it is attached, the test result of a specific patient becomes clear, so it becomes highly confidential information. In this aspect, the confidential information uses encrypted communication so that the security of the information can be ensured in communication and storage. This encrypted communication is communication using various cryptographic processes, for example, SSL (Secure Socket Layer).
Is a protocol communication such as secure HTTP (HTTPS). In contrast,
Non-confidential information does not necessarily need to be communicated or stored under high security. This is because confidential information and non-confidential information are communicated by separate computers, and even if only non-confidential information is acquired, the value of the information itself is low.

The data in the second computer is specified using the hash value of the ID. The first computer makes an ID to the display terminal processing unit by encrypted communication so as to enable this identification.
Send the hash value of. Thereby, 1st partial data and 2nd partial data can be linked | related in a display terminal process part.

By configuring in this way, in the data reference system of the present invention, it is possible to suppress the traffic of encrypted communication and realize the same security as when all of the encrypted communication is performed. Further, for example, it is possible to prevent the ID and the data from being associated even if the second computer is stolen. In particular, if the first computer that handles confidential information realizes a repository unit including confidential information by a volatile storage medium, the power of the first computer is stopped,
Since no data that should be kept confidential remains in the data reference system, security can be further improved.

In the present invention, a computer comprising the display terminal processing unit that generates an image by referring to data by any of the data reference systems described above, and an input device that enables input associated with the image. A data display system comprising: the image includes a display of a plurality of cells arranged in a matrix with a business item aligned in one of the rows or columns and a date and / or time aligned in the other of the rows or columns And at least one of the cells is identified by a business item corresponding to the cell and a date and / or time corresponding to the cell,
Displaying at least one of a value of data acquired from the node operation unit of the computer and a mark for transmitting a request to acquire the data to the first computer, and at least one of the other cells is The data item acquired from the node operation unit of the second computer and the request for acquiring the data specified by the business item corresponding to the cell and the date and / or time corresponding to the cell are transmitted to the second computer. Display at least one of the marks to be displayed, and upon receiving an input for selecting any of the marks by the input device, the display terminal processing unit corresponds to the cell with the selected mark Information included in the data specified by the business item and date and / or time Shown to be able to visually recognize the portion, the data display system is provided.

The display terminal processing unit displays an image including a cell. This image becomes a display screen display screen and is displayed on the display device. For example, a GUI such as a window screen is provided by this image. The cell is a table in which business items are arranged with date and time. Arrange one of these in a row and the other in a column. In this way, since the item, date, and time are determined in each cell, the data can be displayed chronologically arranged for each item, and marks for the display can be arranged. Note that information necessary for specifying data other than items and time series (for example, a patient ID in an examination system of a medical institution) can be specified by another means. The cells include a cell that obtains data from the first computer and a cell that obtains data from the second computer, and these can be mixed in one sheet. When an image is provided in a table format that includes multiple cells, a mark indicating that there is data corresponding to the cell position is displayed in the cell, and the mark is selected. This makes it possible to specify the data to be displayed accurately and quickly, and it is not necessary for the user to be aware of what route the data is referred to. As the input device, a pointing device such as a mouse that enables input associated with an image can be used.

In this invention, it is a medical information system using said data display system, Comprising: In the said some data server, the test | inspection data regarding the different test | inspection in medical care is stored in a separate database, An inspection item, selectable by the input device for transmitting the value of the inspection data and a request to obtain the inspection data to at least some of the plurality of cells specified by the inspection item and date and / or time A medical information system is provided that displays at least one of marks and provides medical examination data.

Medical information systems, in particular, often have their own design database for each inspection system, and because of the rapid technological progress, the database is frequently updated,
By using the data reference system of the present invention, the medical information system can be easily maintained and the cost can be reduced.

In the present invention, a document data display system is provided using such a data reference system. That is, in the present invention, the display terminal processing unit generates a composite document display screen including a display unit related to data of a certain business item with reference to data by the first computer and the second computer included in the data reference system. In the document data display system, the display terminal processing unit is configured to transmit, for the business item, a live display unit that can display arbitrary data of the business item, and a request for acquiring and displaying the data. The data in which at least one of a live display mark is displayed on the composite document display screen, and the update of the business item is stopped based on a determination input that is input according to a determination using the data of the business item Freeze display section for displaying the freeze data as freeze data, Displaying at least one of the freeze display marks for Shimesuru the composite document display screen, the document data display system is provided.

In this aspect, a screen display called a composite document display screen is provided.
The composite document display screen is generally a screen display that enables a list of one or a plurality of data, and is realized by, for example, a window displayed on the screen. The composite document display screen is generally provided with a plurality of data display sections, and business decisions are made by referring to necessary data from among them. The data used for the determination can be displayed by a display unit that directly displays the data, and can be displayed by calling from a mark for displaying the data.

Freeze data refers to data for which updating on the composite document display screen has been stopped. The update on the composite document display screen refers to calling the latest data at that time through the data reference system provided in another aspect of the present invention and displaying it on the composite document display screen, or updating the data at an arbitrary time. Calling it. Here, there is no limitation on the update of data other than freeze data, and when it is displayed on the live display section or called using the live display mark, the latest data is called, or at any point in time. Data can be recalled. That is, data other than freeze data includes data that is automatically updated, data that is periodically updated, and data that is manually performed according to some command. On the other hand, freeze data refers to data that cannot be updated from the composite document display screen. The freeze data can be displayed by a freeze display unit or can be displayed by calling from a freeze display mark.

In this aspect, the data of the live display section and the data called from the live display mark for the displayed business item are stopped according to the determination input and become freeze data. For example, the live display unit is in a state where the displayed data can be updated, and the displayed data is changed according to the update of data such as a data server or the designation of the observer.
When a determination is made while displaying data on such a live display unit and a determination input indicating this is input, the data at that time becomes freeze data and is displayed on the freeze display unit. This freeze display part is an arbitrary display part that displays freeze data. The part that was previously a live display part becomes a freeze display part by displaying freeze data, or to display only freeze data. This can be realized by providing a display unit prepared in advance. Similarly, the freeze display mark is an arbitrary mark for displaying freeze data.

The determination input in this aspect is any input that directly or indirectly indicates that a business determination has been made. For example, when a determination is made such that a certain business item is a target of determination and a conclusion of the determination is input, the input of the conclusion becomes a determination input for the business item. Alternatively, the data (or the live display mark) of the live display section is explicitly specified by the method in which the input person explicitly uses the check box object on the GUI to specify the data used for the determination at that time. An input for specifying the data used for the determination by a method of specifying whether the displayed data) is used for the determination and clicking a confirmation button indicating that the determination is performed on the GUI is also a determination input. Furthermore, assuming that all data displayed on the composite document display screen at the time of determination is used for the determination, input that specifies all data that can be visually recognized at that time is also determined. Input.

In this manner, in this aspect, the data used for the determination can be displayed separately from the others.

In this aspect, the display terminal processing unit displays the additional live display unit for displaying other data and the other data for the business item of the freeze data while the update of the freeze data is stopped. Any of the additional live display marks may be displayed on the composite document display screen in association with the business item.

Freeze data is data that was once used for judgment. Therefore, it is desirable to consider freeze data when making the same or similar determination after the determination. Then, other data of the same business item as the freeze data is displayed on the composite document display screen in association with the freeze data, so that the data used in the new judgment can be compared with or compared with the freeze data used in the judgment. Can do. In this way, a more appropriate determination can be made when making a new determination.

In this aspect, the computer including the display terminal processing unit may store the freeze data in association with the data of the composite document display screen. Further, the computer including the display terminal processing unit includes an integrated processing unit that generates a single file by integrating the data of the displayed composite document display screen, freeze data, and live data, and the display terminal. The processing unit is a simple document that is a display at the time of integration on the composite document display screen by the single file generated by the integration processing unit without referring to data by the first computer or the second computer. The display screen can be generated.

In this embodiment, storing freeze data in association with data on the composite document display screen means storing freeze data and data on the composite document display screen itself so that they can be managed by the same file, This includes placing hyperlinks that can be called up on the display screen and storing them so that they can be called up easily. In addition, this storage can be storage by a main memory or the like, or storage by a non-volatile storage medium. By storing the freeze data in association with the composite document display screen in the computer including the display terminal processing unit, the freeze data can be quickly called up. In addition, if the computer including the display terminal processing unit includes the integration processing unit, it is possible to generate a single file by integrating the composite document display screen data, freeze data, and live data, thereby facilitating file management. . The display generated by this single file is a display reflecting data at the time of integration, and is substantially the same as the composite document display screen without referring to the data by the first computer or the second computer. Is a simple document display screen. Here, “substantially the same” means that the functions are the same in the function for confirming the display contents of the business items necessary for the determination work. For example, the simple document display screen is a screen that displays the same data by changing the display so that it can be seen as a simple document display on the composite document display screen, or a screen dump of the raster display of the composite document display screen. Or a screen for displaying data. Since it is not necessary to refer to the data displayed on the simple document display screen using another computer, the simple document display screen can be managed by a single file for generating the screen, and can be displayed quickly.

In addition, the freeze data in this aspect may be stored in one of the data servers of the data reference system and recalled at least through the first computer or the second computer of the data reference system. By using the data storage system as the data server of the data reference system, it is possible to achieve both sufficient secrecy and quick calling even for freeze data using the reference system of the present invention.

In addition, the present invention provides a medical information system that uses any of the document data display systems described above. In this medical information system, in some of the data servers, examination data relating to different examinations in medicine are stored in separate databases, the business items are examination items in medicine, and the composite document display screen includes: A plurality of test items can be displayed to provide medical test data.

In the present invention, in addition to the data reference system, a data reference method and a data reference program can be realized. The operation of the display terminal processing unit can also be realized as a data display method or a data display program. Furthermore, a medical information display method, a document data display method, a medical information display program, and a document data display program can be realized.

According to the present invention, the data held by the first computer and the second computer can be displayed in association with each other without referring to the database, and access concentration to the data server having the database can be prevented. Response from the computer that operates is improved. Further, even when the database is updated, the update can be handled by changing the implementation of the node operation unit of the first computer or the second computer without changing the configuration of the display terminal processing unit.

Furthermore, in the present invention, a document data display system, method, and the like are realized.
When the document data display screen is displayed by these, for example, the latest data or any data used for the determination is specified while leaving the data that should not be used for determination work such as diagnosis as freeze data in the document. The data can be displayed and the progress of the data can be easily followed while clearly indicating the data used for the determination.

Embodiments of the present invention will be described below with reference to the drawings.
[1. overall structure]
FIG. 1 is an explanatory diagram showing a configuration of a data reference system 10 according to the present embodiment. The data reference system 10 includes a plurality of DB servers 102, 104, 106 and a plurality of CL terminals 112,
A plurality of nodes 12 ₁ , 12 ₂ , 16 ₁ , and 16 ₂ that connect between 114 and 116 are formed. In this data reference system 10, the DB terminals 102 to 116 are connected to the DB server 102.
To refer to data in a to 106 uses communication by computer network 80 via the node 12 _{1-16 2.} Each of the nodes 12 _{1 to} 16 ₂ has data holding and processing functions. Further, the nodes 12 _{1 to} 16 ₂ manage the destinations of the data distributed by the nodes as a history. That is, the nodes 12 _{1 to} 16 ₂ hold which data is distributed to which node and when the data is transmitted to other nodes.

In the DB servers 102 to 106, an RDBMS constructed according to the purpose of each business is operating. This RDBMS stores data generated by business (for example, examination data such as image data used for image diagnosis), receives a query command, retrieves and reads data corresponding to the query command, The data is transmitted to the computer that issued the query instruction. The query language is typically SQ
It is described in a query language such as L.

Each node 12 ₁ , 12 ₂ , 16 ₁ , 16 ₂ in the data reference system 10 of the present embodiment has an index database (hereinafter referred to as “index DB”) 22 in order to realize data holding and processing functions. A small-scale DBMS, a data repository 24, and a processing unit called a processing engine 26 are included. The configuration of each node is shown in FIG. Each of the nodes 12 _{1 to} 16 ₂ can hold data in its own data repository 24 and can acquire data from another node. The nodes 12 _{1 to} 16 ₂ operate in units including the index DB 24, the data repository 24, and the processing engine 26 . There is not necessarily _one node 12 _{1 to} 16 ₂ in one computer. A plurality of nodes operate on one computer on which a multitasking OS is running, and other nodes It can also run on a single computer with the process. In this case, a plurality of index DBs 22 and processing engines 26 operate on one computer, and a plurality of data repositories 24 are provided on one computer.

The nodes 12 _{1 to} 16 ₂ shown in FIG. 2 can communicate with each other by server client communication. With this configuration, the data reference system according to the present embodiment has a function in which the plurality of nodes 12 _{1 to} 16 ₂ distribute and hold data corresponding to data managed by the RDBMS in the DB servers 102 to 106. The nodes 12 _{1 to} 16 ₂ include nodes (hereinafter referred to as gateway nodes or “GW nodes”) 12 ₁ and 12 ₂ that communicate with the RDBMS, and other nodes 16 ₁ and 16 ₂ . Unless otherwise specified, a node is a generic term for a node other than a GW node and a GW node.

The CL terminals 112 to 116 (FIG. 3) are computers that serve as terminals for the user to perform work for referring to data, and use input devices such as a keyboard and a mouse that accept direct input from the user, and display data. It is a computer terminal containing the display apparatus shown to a person. In the CL terminals 112 to 116, a display terminal processing unit called a rendering engine 120 for appropriately presenting data from the nodes 12 _{1 to} 16 ₂ to the user is operating. The rendering engine 120 includes a drawing processing unit 122 that processes data to be displayed on the display device, a user interface unit 124, and a client communication unit 126. The rendering engine 120 converts the data processed by the nodes 12 _{1 to} 16 ₂ to the nodes 12 ₁ to 12.
16 _{2 is} obtained and displayed. The client communication unit 126 is connected to the nodes 12 ₁ to 12 _1.
62 The server communication unit and server client communication included in ₂ are processed.

Each CL terminals 112-116, each node 12 _{1-16 2,} each of the DB servers 102-106,
A computer network 80 is connected. The network topology at this time is physically arbitrary, but logically, the GW nodes 12 ₁ and 12 ₂ are at least the DB server 10.
Communicates with either 2-106, nodes 12 ₁ to the CL terminals 112 to 116 or
The nodes 16 ₁ and 16 ₂ communicating with the 16 ₂ and communicating with the CL terminals 112 to 116 communicate with the DB servers 102 to 106 via the other nodes 12 ₁ and 12 ₂ .

[2. Client details
Details of the CL terminal and the node will be described below.
2.1 Configuration The configuration of a CL terminal used in this embodiment will be described. The CL terminal is realized using a normal computer. This configuration is shown in FIGS. A storage device 42, a CPU 44, a memory 46, a graphic processor 48, and an input / output unit 50 are connected to the bus 40. A display device 52 is connected to the graphic processor 48. A mouse 54 and a keyboard 58 are connected to the input / output unit 50. The CL terminals 112 to 116 are realized by a computer having such a normal hardware configuration. CL terminal 11
In 2-116, the rendering engine 120 operates. Rendering engine 120
The (display terminal processing unit) includes a drawing processing unit 122, a user interface unit 124, and a client communication unit 126. The CL terminals 112 to 116 can have a thin client configuration that does not include a node and a rich client configuration that includes at least one node in the thin client configuration. Unless otherwise stated, a CL terminal having a thin client configuration will be described below.

2.1.1 Rendering Engine The rendering processing unit 122 of the rendering engine 120 is a user interface unit 12.
4 performs processing for drawing image data to be output to the display devices 52 of the CL terminals 112 to 116, for example, implements a graphic window display function in the CL terminals 112 to 116, and allows the user to use a graphical user interface (GUI). )I will provide a.

2.1.2 User Interface Unit The user interface unit 124 of the rendering engine is a window display GU.
A program for performing processing such as processing for referring to data displayed by I, processing for converting image data acquired from the nodes 16 ₁ and 16 ₂ into a format suitable for observation, and image processing. This program also manages the authentication of users (such as doctors)
It also enables display for decision making.

For example, when the program is started, first, a popup for executing user authentication with an ID and a password is displayed. When the user inputs his / her ID and password in this pop-up, the rendering engine 120 confirms whether the ID and password belong to a valid user. This confirmation may be performed by referring to the user master table stored in the CL terminals 112 to 116, or by referring to the user master table using the data reference system of the present invention. Good. Then, processing within the authority according to the user's ID is permitted to the user, and the ID is held as a log or a log of access records to various types of information. When the user is authenticated, the user can perform a task of referring to the information related to the decision making by this program.

2.1.2.1 Display by GUI The GUI of the user interface unit in this rendering engine is, for example,
It is constituted by a plurality of sheets 60A to 60F. FIG. 5 shows an example of this sheet display. In the sheet 60A, each cell is designated according to two items: an information item necessary for decision making by a user (data observer, for example, a doctor) utilizing data and a time series obtained from the data of the item. Configured to have a tabular appearance. For example, when the data reference system 10 is used for browsing various examination data in a medical institution, the GUI of the CL terminals 112 to 116 is used.
Are displayed for each patient ID, with the column sequence corresponding to the date and the row sequence corresponding to the examination item.

Another sheet 60 </ b> C is configured as a list in which physiological image information is simply arranged over time according to time series. Still another sheet 60 </ b> F is an information sheet that displays the attributes of decision-making targets (patients in the example of medical institutions) by category. These sheets are configured so that accurate decision making can be efficiently performed by analyzing a user's decision making work. Also, if necessary, another window can be opened to display the image data.

Each cell 62 specified by the row and column table format in the table of the sheet 60A is a work item corresponding to the row position 66 of the cell (here, GO indicating a liver function in a biochemical examination).
For T), the time 64 (or date, here 20 corresponding to the column position of the cell)
(June 20, 2004) The data value itself is displayed. Also, like cell 68,
A mark indicating that the data exists can also be displayed. The business items usually have a hierarchical structure composed of some group. In order to reflect this group configuration, for example, a row can be collapsed to hide each item in the group, or each item in the group can be expanded and displayed. Here, it is possible to divide into two groups: a group 72 called image report and a group 74 called biochemical test of blood test. Biochemical testing
Further, it can be divided into a serum group 76 and a liver function group 78. This cell can be hidden or displayed again by folding the cell corresponding to the group. With this configuration, it is possible to systematically organize complicated work items. Thus, the user can efficiently distinguish necessary information from unnecessary information.

An example of a sheet display having a list-type sheet 60C is shown in FIG. In the display of the sheet 60 </ b> C in the list format, what is being photographed is displayed in a list while clearly indicating the attributes of the photographed image according to the time series instead of the row and column format. In this display, the time display portion of the column “Examination Date (Time)” is a link button for calling up image data, and this button calls up the image data corresponding to that row in the list. Can do.

FIG. 7 shows an example of sheet display that displays the target attribute as the information sheet 60F. In the display of the information sheet 60F, patient attributes are displayed by category. For example,
The patient's blood type, height, weight, etc. are displayed on the upper left of the sheet. Also, information relating to obstacles, infections, drug evasion, food evasion, and the like is displayed below the sheet. When the target information is information related to an individual such as a patient, the information displayed on the information sheet is personal information, and thus security must be ensured so that it can be handled confidentially. Next, a technique for ensuring this security will be described. The distinction between confidential information and non-confidential information is determined by a management policy.

2.1.2.2 Data Classification Information included in the display sheets 60A to 60F includes classified information and non-confidential information. An example of confidential information is patient attribute information. An example of non-confidential information is inspection result data. Among these, there is information on confidentiality between confidential information and non-confidential information such as inspection items (information specifying which inspection is performed, that is, inspection information). Here, such information is also included in non-confidential information.

The information included in the display sheets 60A to 60F includes information regarding whether or not data can be changed and the possibility of change, in addition to the classification related to confidentiality. Table 1 shows the patient attributes, the examination information on the examination date, the examination information on the past examination date, and the examination data.

Patient attributes are confidential information, and examination data and examination information are non-confidential information. In addition, the update frequency is low in the case of patient attributes, high in the case of examination information on the day of examination, and not updated in the case of examination information and examination data on the past examination date. Information displayed on the display sheets 60A to 60F can be managed by nodes having different specifications in accordance with the classification of these information.

2.1.2.3 Security When non-confidential information is associated with the confidential information, information is added to the confidential information, and thus becomes highly demanded confidentiality information. Therefore, in order to prevent easy association with confidential information when non-confidential information leaks out alone, the ID for acquiring confidential information that requires the most confidentiality in this embodiment is: It is not used as an ID for acquiring required confidential information or non-confidential information. In order to acquire such non-confidential information, a hash value generated from either the ID or the confidential information data is used instead of this ID (hereinafter referred to as “ID hash”).

FIG. 8 shows an association and communication mode between confidential information and non-confidential information in the data reference system 10. Here, the information on the sheet display 60 is divided into the patient attribute 60X, the examination information 60Y, and the examination data 60Z, and the nodes for obtaining the information are different. Here is 12 _l ,
Although 16 _m and 16 _x , 16 _{k to} 16 _m are explicitly shown, these are nodes equivalent to the nodes 12 ₁ and 12 ₂ and the nodes 16 ₁ and 16 ₂ . The node 16 _m holds the data from the nodes 12 _l and 12 _m as a cache. The nodes 16 _x , 16 _k and 16 _l are directly connected to the data server and the CL terminal. The communication protocol differs between confidential information and non-sensitive information. Patients attribute 60X is confidential, it is obtained from the node 16 _x using the ID of the patient. A typical example is information on the information sheet 60F (FIG. 7). The inspection information 60Y and examination data 60Z is non-confidential information, examination information 60Y is taken from the node 16 _k, test data 60Z is obtained from the node 16 _1. A specific method of referring to data will be described later. When the CL terminal refers to the data of the node 16 _x , the communication protocol is secure H
By using TTP (HTTPS), communication with security secured by SSL is performed. Further, the acquired information is not stored in the nonvolatile storage medium in the CL terminal, but is stored only in the volatile storage medium (for example, the main storage area by the RAM) of the CL terminal and displayed on the information sheet. For patients attribute 60X is confidential information, in the node 16 _x, not stored in the nonvolatile storage medium index data. The user interface unit of the CL terminal receives designation of the patient ID and generates an ID hash from the patient ID or from the patient attribute with reference to the patient attribute.

The non-confidential information of the inspection information 60Y and the inspection data 60Z is, for example, item information or numerical data displayed on the sheets 60A to 60E other than the information sheet 60F. The rendering engine 120 uses an ID hash when designating an ID to display this non-confidential information data. The ID hash is also used in the node 16 _k that stores these data.

Confidential information and non-confidential information data are distributed and held in the nodes 16 _x and 16 _k .
The rendering engine 120 provides an environment in which a user can transparently access these distributed nodes. Therefore, in this data reference system 10,
A configuration in which data is distributed while realizing data integrity is realized.

In the above description, among the information included in the display sheets 60A to 60F, the confidential information is described by the patient attribute information 60X, and the non-sensitive information is the inspection item 60Y and the inspection result data 6
Explained by 0Z. Since the distinction between confidential information and non-confidential information is determined by the management policy, these classifications can be other classifications. For example, a medical institution can classify information from the viewpoint of managing information of the institution itself, rather than a classification of whether or not personal information such as patient attribute information and information related to the examination. For example, information about the type of inspection equipment, type of inspection kit, and inspection method used to actually perform the inspection at a medical institution is non-confidential information, the name of the inspector who performed the inspection, and the doctor who instructed the inspection Can be classified information. For example, the imaging type item, the imaging type, and the imaging site shown in the sheet 60C of FIG. 6 may be non-confidential information, and the doctor's name may be non-confidential information. As described above, the confidential information and the non-confidential information as illustrated in Table 1 and FIG. 8 are only managed by the management policy, independently of the configuration of the display sheet as shown in FIGS. Therefore, it is determined.

2.1.2.4 Data Reference In the sheet display shown in FIGS. 5 to 7, processing for referring to data is performed via the data reference system 10 shown in FIG. 8. The operation at this time will be described below.

Each cell 62 of the sheet 60A shown in FIG. 5 displays data specified by the patient ID hash, item, and date. At this time, data to be displayed in each cell 62 of the sheet 60A is acquired from the node 16 _k (FIG. 8). This application program (
In the rendering engine 120), data is referred to by means of data items. This data item is defined by a class (in an object-oriented sense) using a name (definition name), an attribute, and a type. In the rendering engine 120, objects of a plurality of data items distinguished by names are implemented, and these are used properly according to necessary data. The data item object is programmed with a method of the data item so that, when a specific attribute value is specified as an argument, data of a type determined for each data item can be acquired.

For example, a data item
Definition Name: Blood Test Liver Function Attribute: Patient ID Hash, Test Date Type:% 4.0f
It has the structure of. This data item is distinguished from data items of other definition names by the definition name “blood test liver function”. For example, a GO test of a patient whose patient ID is “0068” on June 20, 2004 by the “blood test liver function” data item.
In order to obtain the value of T, the patient's ID hash: h (0068) and examination date: 20040620 are passed to this “blood test liver function” data item. Here, h () represents a hash function. As described above, in the sheet 60A configured as shown in FIG. 5, each row of the sheet 60A is associated with a data item for obtaining data necessary for the cell. In order to obtain data, a process of passing the date of the column to which the cell belongs and the hash value of the patient ID of the sheet is performed for the data item.

Another data item is
Definition name: MRI image Attribute: Patient ID hash, imaging date, imaging region Type: 512K image The configuration includes the patient ID hash, imaging date, and imaging region for this "MRI image" data item. Thus, MRI image data can be obtained. In general, the type in the data item can be text data such as numerical values and character strings, binary data such as image data, and object programs such as operation programs.

2.1.3 HTTP Client Unit The client communication unit 126 (FIG. 3) is a communication processing unit that performs client-server communication with a node in accordance with the HTTP communication protocol. The data specified by the data item is acquired from the node 16 _k (FIG. 8) through the client communication unit 126. The client communication unit 126 receives a notification (described later) from a node connected in advance, and registers which node has necessary data. In response, the client communication unit 126 issues a request for necessary data to the node,
In response to this request, the node returns data as a response. This data is data in a range specified by the data item in the client communication unit 126. When the client communication unit 126 receives necessary data from the node as a response to the request, the user interface unit 124 displays the data on the sheet. For example, for the “blood test liver function” data item, the patient ID is “0068” if the data acquired from the node with the patient ID hash: h (0068) and the test date: 20040620 specified is “33”. The character “33” is displayed in the cell 62 indicating the GOT value of liver function on the examination date of June 5, 2005 of the patient. In addition, "MR
If it is an image acquired from a node by specifying a patient ID hash, an imaging date, and an imaging site in the “I image” data item, for example, another window is opened and displayed. Note that the client communication unit 126 can also perform communication using a secure HTTP communication protocol so that confidential information communication can be handled. In the program of the rendering engine 120, the sheet 60A ~
Each information of F is configured to switch between confidential information and non-confidential information. The implementation of data items in the rendering engine 120 is performed by a programming language such as JAVA (registered trademark).

2.1.3.1 Management of GUI Settings The configuration of the sheet 60 may be determined in association with, for example, the ID of the user, reflecting that the data that is important in the work differs for each user. In the example of the medical institution, the user interface unit 124 is configured so that the ID 30 is assigned to the doctor as the user, and the CL terminals 112 to 116 provide different configurations of the seat 60 depending on the doctor ID 30 for the same patient. May be configured. Even when different users (physicians) use the same rendering engine 120 for the same subject (patient), this configuration enables flexible data reference according to the difference in user's work. Become.

[3. Node details]
3.1 Configuration FIG. 2 shows a detailed configuration of the nodes 12 _{1 to} 16 ₂ of the data reference system of the present invention. The index DB 22 included in the nodes 12 _{1 to} 16 ₂ is a DBMS including a database realized using a storage unit and a management processing unit that can receive and process a query from another process in order to manage the database. . The index DB 22 holds index data (index data and index information) for searching for data in the data repository 24 and update information of each data. An example of the index data is a combination of a patient ID or ID hash and an address in the repository 24 of data associated therewith. Examples of update information are a hash value of data (hereinafter referred to as “data hash”) and a time stamp (these will be described later). The nodes 12 _{1 to} 16 ₂ also include a data repository 24. The data repository 24 is for holding data itself referred to in the data reference system 10. This data is, for example,
The XML format metadata and the data itself are combined and held in a single file format in the ZIP format. The metadata is information related to data held correspondingly, and is, for example, data of IDs of reference source nodes 16 ₁ and 16 ₂ that refer to the data as viewed from the nodes 12 ₁ and 12 ₂ . In addition, the processing engine 26 converts the data in the data repository 24 into a format that can be processed by the rendering engine 120. The other functions of the processing engine 26 are a client communication unit process and a server communication unit process for realizing a communication process in the server client format. The processing engine 26 includes, for example, an HTTP server operation unit and an HTTP client operation unit in the HTTP communication protocol. The communication processing by the server client type, the communication between the nodes 12 ₁ to 16 _2, is used for communication between the CL terminals 112-116 and the node 12 _{1-16 2.} The processing of the client communication unit issues a request to the other nodes 12 _{1 to} 16 ₂ . Further, the processing of the server communication unit returns a response in response to requests from other nodes 12 _{1 to} 16 ₂ .

3.2 internode communication processing node communication client communications processing server client type, more specifically, the node 12 _1-16 each other and the _second processing engine 26, rendering engine and a node of the CL terminal 112 to 116 1
This is performed in order to make it possible to refer to data between the 2 _{1 to} 16 ₂ processing engines 26. Communication processing is performed in units of objects called data items described above in the processing engine 26 that implements server-client communication. The contents of this communication process are a reference process and a notification process.

3.2.1 Reference Processing The reference processing is performed in three steps: registration of the partner node, confirmation of update, and data reference.

3.2.1.1 Registration of counterpart node The registration of the counterpart node is performed by using the ID of the node that becomes the reference source for the node and the ID of the reference destination node as XML format metadata in the data repository 24 of the nodes 12 _{1 to} 16 _2. It is a process to register. For example, the nodes 12 ₁ and 12 ₂ are registered in the node _{1 as} a reference source node.
The operation of registering the IDs of the reference source nodes 16 ₁ and 16 ₂ that refer to the data of 2 ₁ and 12 ₂ , and the reference source that references the data of the nodes 16 ₁ and 16 ₂ by the nodes 16 ₁ and 16 ₂ CL terminal 11
This is an operation for registering IDs of 2 to 116. In addition, registration of the reference destination node is performed by, for example, an ID of another node 12 ₁ , 12 _{2 to which} a certain node 16 ₁ , 16 ₂ refers to data with the node 16 ₁ , 16 ₂ as a reference source. Is the operation of registering. The IDs of the nodes 12 _{1 to} 16 ₂ and the CL terminals 112 to 116 are arbitrary IDs for uniquely identifying these nodes and CL terminals. For example, each of the nodes 12 _{1 to} 16 _{2 includes} one computer. In this case, an IP address for identifying the computer or a host name can be used.
Since registration of the partner node is performed in advance before executing the data reference, each node
Which partner node should be exchanged corresponding to the data is specified in advance. Note that registration of the counterpart node only needs to be performed before the reference process, and does not have to be performed every time data is referred to.

3.2.1.2 Confirmation of update Confirmation of update is a process of confirming whether or not the data held in the data repository 24 of the nodes 12 _{1 to} 16 ₂ has been updated. To be done. The update confirmation is performed by acquiring the data hash and time stamp of the data from the reference destination (acquisition source) nodes 12 _{1 to} 16 ₂ of the data and comparing it with the stored data hash and time stamp. Is called.

Here, the above-described data hash and time stamp are generated by the processing engine 26 when the nodes 12 _{1 to} 16 ₂ acquire data, and are recorded in the index DB 22 of each of the nodes 12 _{1 to} 16 _{2 in} association with the data. Is done. The data hash and the time stamp are stored in the index DB 22 in association with the data item and used as update information. This data hash is obtained by processing the contents of data with a hash function. Similarly to a normal hash, if the data is partially different, the data hash is also different. Since this data hash has a much smaller data capacity than the data itself, it is possible to perform the process of confirming whether or not the data content has been updated in a very short time. The time stamp is the normal OS (
Operating system) Nodes 12 ₁ to ₁ as well as the time stamp of the file under
62 is generated from clock information of a computer on which _{2 2} operates. Each of the nodes 12 _{1 to} 16
₂ returns a data hash as a response in response to a request from the other nodes 12 _{1 to} 16 ₂ (or CL terminals 112 to 116).

In the comparison of whether or not the data hash matches the time stamp, if the data hash matches, the data in the data repository 24 of the data itself is the latest regardless of whether or not the time stamp matches. It is determined that there is. In this case, the nodes 12 _{1 to} 16 ₂ transmit their own data to the reference source. When the data hash and the time stamp do not match, it is determined that the data in the data repository 24 of the nodes 12 _{1 to} 16 ₂ itself is not the latest. In this case, a request is made to the reference destination (acquisition source) nodes 12 _{1 to} 16 ₂ to transmit the updated data, and the data is transmitted to the reference source. Data hash does not match, if only timestamps match, it is determined that the falsification of data is performed in at least one of the nodes 12 ₁ to 16 _2, data confidentiality reference system is not able to maintain Since there is a possibility that there is no possibility, there is a notification to warn tampering with one of the computers connected to the network of the data reference system.

By performing the update confirmation process using a data hash and a time stamp, the update confirmation can be processed at a higher speed than when the entire updated data is communicated, and can be performed each time the data is referenced. In addition, higher security can be realized than when the data update is confirmed only by the time stamp.

3.2.1.3 Data Reference Data reference is an operation of actually communicating requested data. With the configuration of the nodes 12 _{1 to} 16 ₂ of the data reference system 10, the data of the DB servers 102 to 106 is acquired from the data repository 24 of the nodes 12 _{1 to} 16 ₂ as much as possible. A data reference system with good access and no concentration of access is established.

Further, as a derivative effect, by leaving this data hash and time stamp as a log, the data referenced by the CL terminals 112 to 116 can be changed to the nodes 12 ₁ to 1.
6 ₂ can be managed. As a result, it is possible to analyze the frequency of use of data, identify data used in business decision making, verify business content, and perform statistical processing.

3.2.2 Notification Processing Notification processing in communication processing is processing in which a node notifies a reference source node when the node updates data in the data repository of the node itself. The reference source node here selects a node registered as a reference source node in the above-described reference processing. For example, the nodes 12 ₁ and 12 ₂ register the nodes 16 ₁ and 16 ₂ as reference nodes, and the nodes 12 ₁ and 12 ₂ notify the nodes 16 ₁ and 16 ₂ .

The notification to the reference source node can be transmitted as a notification specifying the data item of the updated data. The reference source node that has received this notification transmits a request to transmit the data of the updated data item to the reference destination node, and accordingly, the reference destination node transmits the data item as a response to the request. The referrer node is
The latest updated data is received and the data in its own data repository 24 is updated. Similarly, this reference source node also performs notification processing to a downstream node as its own data is updated. Thus, in the configuration in which each node issues a notification in response to the update, when the data is updated in the node, the updated data propagates on the network between the nodes, and even if the data is updated, Data integrity can be automatically maintained with less time lag. Note that the DB server can also send notifications in response to data updates.

3.2.3 Data Item in Node Communication of data by this data item will be further described by taking as an example the case where the CL terminals 112 to 116 communicate with the nodes 16 ₁ and 16 ₂ . In the CL terminals 112 to 116, it is specified which of the nodes is the data reference node. This designation is stored in the repository as metadata, for example. Each node 16 ₁ , 1
Also in 6 _2, registration of the correspondent node of the above reference processing is already performed. As described above, in the rendering engine 120 of the CL terminals 112 to 116, when data is specified (for example, when the rendering engine 120 tries to display using this data), a specific argument is given to the data item. The data to be requested is specified.
Then, the rendering engine 120 uses the data item to determine the upper node 12.
₁ and 12 ₂ , a data item acquisition request is transmitted. Nodes 12 _{1 to} 16 ₂
In the application program (processing engine 26) that implements communication in the server client format, the data to be communicated is specified in units of data items as in the case of the rendering engine 120 in the CL terminals 112 to 116 described above. A communication process using a data item will be described by taking as an example a case where the CL terminals 112 to 116 request data from the nodes 16 ₁ and 16 ₂ using the data item. CL terminal 1
If 12 to 116 requests a data to node 16 _1, 16 _2, node 16 _1, 16 ₂ which has received the request, and if it has the correct data corresponding to the data item, have There may be no cases. Appropriate data refers to data that includes data specified by the data item and has been updated. When appropriate data does not exist, the data is requested to the other nodes 12 ₁ and 12 ₂ . At this time, the processing engines 26 of the nodes 12 ₁ and 12 ₂ are connected to the CL terminals 112 to 11.
Similar to the rendering engine 120 in FIG.

3.2.4 Relay Function The processing engine 26 of the nodes 12 ₁ and 12 ₂ transmits appropriate data to the requests from the nodes 16 ₁ and 16 ₂ instead of the direct requests from the CL terminals 112 to 116. There is a function to do. When the nodes 12 ₁ and 12 ₂ have appropriate data corresponding to the request, the nodes 12 ₁ and 12 ₂ transmit data to the nodes 16 ₁ and 16 ₂ . At this time, the data sent to the CL terminals 112 to 116 are the nodes 16 ₁ , 1
6 ₂ is based on the data obtained from the nodes 12 ₁ and 12 ₂ . Thus, the node 12 ₁
, 12 _2, the processing engine 26 includes DB servers 102 to 106 and nodes 16 ₁ , 1.
It operates to relay and 6 _2.

The node 16 _1, 16 ₂ of the processing engine 26, there is a function of relaying a request for the referenced data to node 12 _1, 12 _2. When the other nodes 12 ₁ and 12 ₂ to which the request is relayed have appropriate data corresponding to the request, the data is received from the other nodes 12 ₁ and 12 ₂ , and the node 16 ₁ and 16 ₂ are C
It returns as a response to the L terminals 112-116.

When performing the relay operation, the nodes 12 _{1 to} 16 ₂ store the data in the repository 24 as data held by themselves, and perform a response with the data in the repository 24 when a request with the same data item is received again. Can do. As a result, the node 12
_{1 to} 162 ₂ have a relay function and at the same time hold the relayed data by itself, thereby improving the response to the next request for the same data.
Therefore, the data frequently referred from the CL terminals 112 to 116 is the CL terminal 112 to
It is automatically held in the nodes 12 _{1 to} 16 ₂ with good response from 116.

Appropriate data corresponding to the request from other nodes or CL terminal, if the node is held in its own data repository 24, processing engine 26 of the node 12 ₁ to 16 _2, the requested Interpret which data in the repository 24 corresponds to the data item, read the appropriate data from the data in the repository 24, convert the necessary data into the format of the requested data item, and respond as a CL terminal 1
12 to 116.

3.2.5 Processing engine 26 difference node 12 ₁ to 16 ₂ mounted on the data item may be called the data in the data repository 24 by the data item. At this time, the processing engine 26 only needs to be able to transmit data in response to a request by a data item from the other nodes 12 ₁ , 12 ₂ or the CL terminals 112 to 116. Accordingly, data items of the processing engine 26 at node 12 _{1-16 2} can be configured to associate the request by separate data items are similar to one data item.

For example, in the data repository 24 of the nodes 16 ₁ and 16 ₂ , the patient ID hash, test date, systolic blood pressure, diastolic blood pressure, GOT are stored as blood test data.
h (0068), 20040620, 142, 89, 33
h (0507), 20041210, 123, 89, 150
h (0068), 20041210, 116, 74, 60
...
Is stored in the processing engine 26.
Name: Blood test Attribute: Patient ID hash, Test date Type:% 4.0f
If the class of the “blood test” data item is defined, data corresponding to this table can be called from the repository 24. In the CL terminals 112 to 116,
Name: Blood test liver function Attribute: ID hash of patient, test date Type:% 4.0f
Suppose that the “blood test liver function” data item is defined by the class. In such a case, CL terminal 112 to 116, if the request specifies a test date and the patient's ID hash node 16 _1, 16 _2, the processor engine of the node 16 _1, 16 _2, the same patient By specifying the ID hash and test date in the “blood test” data item,
Data corresponding to the table can be acquired from the data repository 24. The data repository 24 transmits only the part necessary for the request by the “blood test liver function” data item from the “blood test” data item to the CL terminals 112 to 116 as a response.

Further, the processing engine 26 of the nodes 16 ₁ and 16 ₂ is connected to the data repository 24.
When there is no appropriate data in the data, when acquiring data from the upper nodes 12 ₁ , 12 ₂ , the data items specifying such a wider range of data (superset data) Data can also be acquired from the nodes 12 ₁ and 12 ₂ . Thus, the implementation of the data items in the node 12 _1-16 within ₂ of the processing engine 26, C
It may be different from the implementation of data items in the L terminals 112-116.

3.3 Gateway Node The gateway node (GW node) performs a process of reading data by communicating with the DB servers 102 to 106 among the nodes 12 _{1 to} 16 ₂ provided in the data reference system 10 of the present embodiment. Nodes 12 ₁ and 12 ₂ to be operated. The GW node is another function of the node.
It has a data holding function (repository 24) and a function of accepting requests from other nodes 16 ₁ and 16 ₂ and converting the format as necessary. The processing engine 26 of the GW nodes 12 ₁ and 12 ₂ establishes server client communication with the other nodes 16 ₁ and 16 ₂ . The processing engine 26 of the GW nodes 12 ₁ and 12 ₂ determines whether or not there is appropriate data in its own repository 24 in response to a request from a reference source for transmitting data. If there is no appropriate data, a query for the DBMS of the DB server 102 to 106 is issued. D
When the BMS responds to the query, the processing engine 26 of the GW nodes 12 ₁ and 12 ₂ has a relay function of accepting data from the DBMS and responding to the reference source. When the DBMS of the DB servers 102 to 106 accepts the query by SQL, the GW nodes 12 ₁ and 12 ₂
Select * from Issue a query such as a blood test. This query is
Name: Blood test Attribute: Patient ID hash, Test date Type:% 4.0f
This corresponds to all the data items in the GW nodes 12 ₁ and 12 ₂ . The GW nodes 12 ₁ and 12 ₂ can generate a patient ID hash from a patient ID included in the DBMS using a hash function. This ID hash is generated by the same calculation as the ID hash used when the CL terminals 112 to 116 refer to data. As described above, the GW nodes 12 ₁ and 12 ₂ have the data reference system and the DBMs of the DB servers 102 to 106.
Acts as a gateway to the processing of S.

[4. Implementation]
4.1 Implementation of Data Server Each of the DB servers 102 to 106 can be a computer such as an Oracle (registered trademark) system on which various commonly used commercial DBMSs operate. in this case,
It has a function of receiving a query from an external computer using a query language such as SQL and transmitting data in accordance with the query. The DB servers 102 to 106 may be file servers realized by an OS file system. In this case, a command language for file transfer such as an FTP command can be used as a query language.
In the file server, an FTP daemon that accepts FTP commands is operated.

4.2 Implementation of Nodes There are several possible implementations for implementing nodes on a computer. In the data reference system of the present invention, it is not necessary to use only _{one of} these nodes 12 _{1 to} 16 ₂ , and these may be used in combination according to data and management characteristics. it can. A node does not necessarily correspond to one computer and one node.
Hereinafter, a configuration when a node is mounted will be described.

4.2.1 Configuration by Index DB As described above, the nodes 12 _{1 to} 16 ₂ have the index DB 22 and the data repository 2.
4 and the processing engine 26. Data repository 24
The OS file system can be used. In this case, in preparation for a case where a full text search is necessary, a flexible data search can be performed by adding a full text search engine such as the Namazu system. Data suitable to be held by the nodes 12 _{1 to} 16 _{2 having} this configuration is, for example, non-confidential information such as inspection data.

4.2.2 Configuration by R DBMS Another configuration of the node can be configured by using RDBMS. In this case, the node includes an RDBMS, an interface unit (I / F unit) for the RDBMS, and a processing engine. Compared with the above configuration using the index DB 22, the parts corresponding to the index DB 22 and the data repository 24 are replaced with the RDBMS and the I / F unit. The RDBMS stores data in the data repository 24 in association with data such as the hash value and time stamp of the data. Such a configuration is easy to implement because it uses an existing RDBMS, and is excellent in real-time characteristics (property that processing is completed in a certain period of time). On the other hand, it costs RDBMS, and data In some cases, a rapid performance degradation may occur as the scale of the system increases.

4.2.3 Configuration by XMLDB A node can also be configured by using XMLDB (XML database). In this case, the processing engine is provided in XMLDB itself. Index DB
The index DB 22 and the data repository 24 in the configuration using are replaced with a database using XMLDB. XMLDB has the advantage that a more complex database than RDBMS can be designed and complex searches can be performed.

[5. Operation]
5.1 Display by Request from Client Terminal The operation of the data reference system according to the embodiment configured as described above will be described with reference to FIG. FIG. 9 is a flowchart showing the operation of the data reference system according to the embodiment of this invention.

As a preparation stage, the nodes 12 ₁ , 16 ₁ , the CL terminal, and the node 16 ₂ register the counterpart nodes (S102, 112, 132, 152). This is, for example, a process of periodically registering the reference destination of the data and the ID of the node serving as the reference source for each data in its own repository. Since the CL terminal does not have a reference source, the ID of the node of the reference destination only is registered.

In the CL terminals 112 to 116, the user designates a specific target ID (patient ID) from an input device such as a mouse to display specific data and accepts a call for the sheet 60A (S134). In response to this, the rendering engine 120 specifies a specific argument for the data item associated with the sheet and transmits a request for acquiring data. Here, this request is request 1 and request 2
Are made up of two requests, each request being a different node 16 ₁
When emitted in 16 _2, data corresponding to the request 1 is referenced by the node 16 ₁ and node 12 _1, the data for the request 2 is described as corresponding to node 16 _2.

When node 16 ₁ receives this request 1, the request to its own repository 1
It is determined with reference to the index DB 22 whether there is data corresponding to (S11).
4). If there is data, update confirmation processing is further performed (S116). Processing of the update check is performed with respect to node 12 ₁ which has a data corresponding to the request 1 (S104). Update confirmation result, when the update is necessary and, if data is not corresponding to the node 16 _1, additional request is transmitted (S120). The additional data is prepared in the node 12 ₁ (S106), and the node 12 ₁ transmits the additional data (S
108). The data is received by the node 16 ₁ (S122), it is stored in the repository (S124). This means that the data in the repository has been updated. Therefore, for use later, the update notification process notifies the node 16 ₁ of the update to the reference computer (S126). Then, the data of the request 2 is transmitted from the repository having the updated data (S128). Here, step 106,
154 data preparation process and is of, and refers to the process node 16 ₁ went from step 114 to 124, and a process performed by the further upper node or data servers as necessary.
Therefore, the node 12 ₁ determines that the data servers 102 to ₁₀ are in step 106 as necessary.
A query is issued up to 6 to prepare data. Similar processing is performed for Quest 2 also at node 16 _2. When the data for request 1 and the data for request 2 are received together, the data designated by the user is displayed (S144).

5.2 Display of Confidential Information and Non-Confidential Information When the information to be displayed is constituted by the confidential information and the non-confidential information as shown in FIG. It is possible to send a request 2 for acquiring non-confidential information only after calculating the ID hash. For this reason, the transmission of request 2 shown by step 138 in FIG.
This is performed after receiving the response to the request 1 in step 140 and further calculating the ID hash from the ID.

5.3 Operation of Update Notification Process Although not shown, the reference source node that has received the update notification process (S126) issues an addition request to the reference destination node that has performed the update notification process, and acquires the data. be able to. Immediately after the update, there is a high possibility that the reference-destination node is transmitting data as in step 128. Therefore, the reference-source node can send an addition request after waiting for a predetermined period.

[6. Composite document display screen]
As an embodiment of the present invention, an example using a composite document display screen will be described.
FIG. 12 is a screen example showing a composite document display screen in the composite document display system according to the embodiment of the present invention. FIG. 13 is a screen example showing a composite document display screen including a live display unit and a freeze display unit in the composite document display system according to the embodiment of the present invention.

6.1 Transition of Composite Document Display Screen The composite document display screen shown in FIG. 12 and FIG. 13 is a single window screen. By generating the display of the freeze display portion and the live display portion, the composite document display screen shown in FIG. It is a transition to. These composite document display screens 200 are images generated by the display terminal processing unit.
A live display unit and a freeze display unit can be included independently of each other. FIG. 12 shows live display sections 202 ₁ and 202 ₂ for each of a plurality of business items (inspection 1 and inspection 2).

FIG. 13 shows a freeze display section 204 for one of the business items (inspection 1) shown in FIG.
₁ and an additional live display section 206 ₁ are displayed, and the other (examination 2) freeze display section 2
Composite document display screen 20 displaying 04 ₂ and an additional live display unit 206 ₂
This is an example of 0. In the figure, the fact that the displayed display part is a freeze data display part is expressed by drawing the frame line of the display part thickly. Note that on the actual composite document display screen, it is possible to express the freeze data by other methods. This method includes, for example, changing the background color of the display unit or displaying a mark that indicates that the data is freeze data. Also, the freeze data display section refers to a display section in which the displayed data is freeze data, so that when the freeze data is displayed, a display window different from the live display section is generated and the freeze data is displayed. In other words, a window that has been a live display unit until then displays freeze data and becomes a freeze data display unit.

Below the freeze display portions 204 ₁ and 204 ₂ , additional live display portions 206 ₁ and 206 ₂ are displayed. These additional live display units 206 ₁ and 206 ₂ are connected to the freeze display unit 204.
_1, 204 any of the possible display of data ₂ the same type of work item, respectively (test 1 and test 2). Typically, when the diagnosis is performed once and the data used for the diagnosis is displayed on the freeze display units 204 ₁ and 204 ₂ , the freeze display unit 204 is used to observe the progress of the symptoms after the diagnosis. Compare the freeze data that is not updated displayed in ₂ with the data displayed in the additional live display units 206 ₁ and 206 ₂ at that time, and add the data before and after the determination. The live display units 206 ₁ and 206 ₂ can be displayed and compared. Freeze display unit 204 ₁ , 20 for displaying freeze data
4 ₂ stops the data update according to the determination input while displaying the data on the live display sections 202 ₁ and 202 ₂ shown in FIG. 12, and changes the display section to the freeze display sections 204 ₁ and 204 ₂ . Then, additional live display portions 206 ₁ and 206 ₂ are newly displayed.

6.2 Data Displayed on Live Display Units The live display units 202 ₁ , 202 ₂ , 206 ₁ , and 206 ₂ shown in FIGS. 12 and 13 are connected to the data servers 102 and 104 through the nodes 16 _x and 16 _y , respectively. The data called from is displayed. Live display unit 2021,206 ₁ displays the digital image, such as a not shown example, X-ray CT, live display unit 202 _2, 206 ₂ displays the numerical data of the inspection. These data may be data called from different data servers through different nodes as shown in FIG. 12, and although not shown, they may be called from the same data server through different nodes, or may be different. It can be called from one data server through one node.

6.3 Freeze data On the composite document display screen, freeze data is handled as data whose update has been stopped. In order to realize this, for example, the freeze data is managed so as to be included in a file for generating a composite document display screen, and is integrated into one document. The data becomes freeze data when used for judgment, but the data once frozen data is protected from being overwritten or lost later.

6.4 Data Reference Method in Diagnosis A data reference method when the data reference system is applied to a medical information system will be described. The data reference system used here is the data reference system 10 of one aspect of the present invention described with reference to FIGS.

FIG. 14 is a flowchart for explaining the flow of processing including determination (diagnosis) when using this medical information system. The medical information system of this aspect first generates a composite document display screen (S202). This composite document display screen can be a main screen for medical personnel such as doctors and nurses to call out test results for each patient. The composite document display screen can be generated in a plurality of modes. One is a mode in which the previous composite document display screen of the patient is displayed as it is. Further, for example, a composite document display screen can be generated by using a template that reflects the type of data used as standard. As an example, such a composite document display screen is displayed on a client terminal (
1, 112, 114, 116).

Next, the medical information system calls data to be displayed on the composite display screen through the data reference system (S204). This data can also be called in various ways. For example, the composite display screen can be configured such that a medical staff can give an explicit request using any button on the GUI or the like to call specific data to the live display unit. Also, configure the medical information system so that a request is automatically sent to the data reference system at the same time as the composite document display screen is opened, and the latest data at that time is acquired according to the business item. You can also.

When a medical worker makes some diagnosis (judgment) based on the called data, the fact of the diagnosis or the diagnosis result is input through some computer. This input operation can be provided with an input field on the composite document display screen so that the medical staff can perform it through the composite document display screen. Moreover, it may be configured to be input as data indicating that diagnosis has been performed on a database referred to by the medical information system of the present invention. The client computer receives a determination input indicating that the diagnosis has been made by some method such as an input by a medical worker or an input based on a call from the database (S206). This decision input can be any input that can indicate which data was used for diagnosis, either independently or in combination with other information. For example, this judgment input can be configured to be input data that holds the type of data used for diagnosis, or can be referred to a data record that holds the relationship between the diagnosis result and the data used at that time Can be configured to be data.

When the judgment input is accepted, updating of the data used for diagnosis is stopped based on the judgment input, and the data is displayed on the freeze display unit (S208). Here, any method can be used as a method for stopping the update of data. For example, a command for prohibiting overwriting of a data record whose update has been stopped is transmitted to the DBMS, or snapshot data of the current data is stored as a part of data for the composite document display screen As a result, the data update can be stopped. The data whose update is stopped in this way (freeze data) is displayed on the freeze display section. The freeze display unit is configured to indicate which diagnosis the freeze data was used for when displaying the freeze data, and conversely, the diagnosis performed is specified and used for the diagnosis. The freeze data used can be configured to be displayed.

6.5 Simple Document Display Screen A computer including a display terminal processing unit can include an integrated processing unit (not shown). The integration processing unit integrates the displayed composite document display screen data, freeze data, and live data to generate a single file. This single file can be stored on that computer, or it can be stored on any computer that can be referenced using the data reference technique of the present invention.

The single file generated by integration in this way holds data necessary for reproducing the same display as the composite document display screen at the time of integration. That is, the composite document display screen data, freeze data, and live data are integrated into this single file. The display terminal processing unit can generate a display substantially the same as the composite document display using the single file. In the present invention,
This display is called a simple document display. This simple document display screen, like the composite document display screen, can be made the same display screen without referring to the data through the nodes in the live display section or the like. By managing, necessary data can be managed individually. As in the case of the composite document display screen, a live display section can be added to this simple document display screen, and the update of the data of the added live display section can be added as a freeze display section. it can. Thus, the display screen obtained by adding the live display unit to the simple document display screen is not different from the composite document display screen in that the live display unit is provided. Therefore, in this embodiment, a composite document display screen can be generated again based on a simple document display screen generated from data once integrated into a single file.

Although the embodiment of the present embodiment has been described above, the present embodiment is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present embodiment. And combinations are possible.

For example, in FIG. 1, the nodes 12 ₁ and 12 ₂ and the nodes 16 ₁ and 16 ₂ are logically configured in two layers, but for example, the nodes may be configured to be one layer, Embodiments configured to be multi-layered, configured to be indistinguishable in layers, or configured in a tree shape are also possible. Although an example of a thin client in which a node is not included in a CL terminal is mainly described, for example, a node that handles confidential information is included in the CL terminal to form a rich client, and a node that operates on the CL terminal is volatile. A configuration in which the storage unit of the storage medium is used as a node repository, thereby speeding up the acquisition of confidential information that is a premise of a request for non-confidential information, and the confidential information is erased by turning off the CL terminal. Can also be realized.

In addition, an example of using the live display unit and freeze display unit on the composite document display screen has been shown, but instead of these displays, a live display mark that provides a link for calling data on the composite document display screen, or a freeze display By providing marks, an equivalent function can be realized by a technique such as popping up a window for displaying data upon accepting a click for selecting those marks.

FIG. 1 is an explanatory diagram showing the configuration of the data reference system according to the embodiment of this invention. FIG. 2 is an explanatory diagram showing the configuration of the nodes in the data reference system according to the embodiment of this invention. FIG. 3 is an explanatory diagram showing the configuration of the client terminal in the data reference system according to the embodiment of this invention. FIG. 4 is an explanatory diagram showing a configuration of a computer used for the client terminal in the data reference system according to the embodiment of this invention. FIG. 5 is an explanatory diagram illustrating an example of a screen displayed on the client terminal in the data reference system according to the embodiment of this invention. FIG. 6 is an explanatory diagram illustrating an example of a screen displayed on the client terminal in the data reference system according to the embodiment of this invention. FIG. 7 is an explanatory diagram illustrating an example of a screen displayed on the client terminal in the data reference system according to the embodiment of this invention. FIG. 8 is an explanatory diagram showing a mode of associating and communicating confidential information and non-confidential information in the data reference system according to the embodiment of this invention. FIG. 9 is a flowchart showing the operation of the data reference system according to the embodiment of this invention. FIG. 10 is a network diagram showing a logical configuration of data reference in a conventional data reference system. FIG. 11 is a network diagram showing a logical configuration of data reference in a conventional data reference system. FIG. 12 is a screen example showing a composite document display screen including a live display unit in the composite document display system according to the embodiment of the present invention. FIG. 13 is a screen example showing a composite document display screen including a live display unit and a freeze display unit in the composite document display system according to the embodiment of the present invention. FIG. 14 is a flowchart showing the operation of the document display system according to the embodiment of the present invention.

10 data reference system 12 _{1 to} 16 ₂ node 16 _x , 16 _k node 22 index DB
24 Data Repository 26 Processing Engine 60 Sheet 102-106 Data Server 112-116 Client Terminal 120 Rendering Engine 122 Rendering Processing Unit 124 User Interface Unit 126 Client Communication Unit 200 Composite Document Display Screen

Claims (19)

A data reference system connected to a computer network having a number of data servers having a database and including a first computer and a second computer operating as nodes, any computer connected to the computer network , A display terminal processing unit for displaying data is operating,
Each of the first computer and the second computer is
A repository unit that holds data that is a subset that is a set of data including a part of data of the database;
An index data storage unit for storing index information for searching data in the repository unit;
Processing for receiving update information of data corresponding to the data in the repository unit from another computer connected to the computer network, processing for receiving a request from the display terminal processing unit for obtaining data used for display, Using the index information of the index data storage unit, processing for confirming whether the data corresponding to the request has been updated in the repository unit, and updated data corresponding to the request is in the repository unit A processing engine unit that converts the updated data into data in a format for the display terminal processing unit as necessary and transmits the data to the display terminal processing unit as a response to the request; A node operation unit including
A data reference system in which data from a repository unit of a first computer and data from a repository unit of a second computer are associated with each other and displayed by the display terminal processing unit. The processing engine unit determines whether the repository unit holds data corresponding to the request based on the index information, and when the data corresponding to the request is not in the repository unit, Processing for transmitting an additional request for acquiring additional data corresponding to the request to the node operation unit of another computer connected to the computer network, and responding to the additional request as a response to the additional request further performed, data reference system according to claim 1 and a process of the acquiring additional data from the other one of the computer that. The processing engine, when the said additional data acquired from the other one of the computer and stored in the repository portion by additional request was accepted again requests to retrieve the data, for該再of the request The data reference system according to claim 2, wherein a process of transmitting data based on the additional data of the repository unit as a response is performed. A third computer connected to the computer network;
The third computer
A repository that holds data that is a subset of the database;
An index data storage unit for storing index information for searching data in the repository unit;
Processing for receiving update information of data corresponding to the data in the repository unit from another computer connected to the computer network, processing for receiving the addition request from the processing engine unit of the first computer or the second computer, When the index information of the index data storage unit is used to confirm that the additional data corresponding to the addition request is in the repository unit, and the additional data corresponding to the addition request is in the repository unit, and have a relay node operation unit including a relay processing engine for performing the process of transmitting the additional data to the processing engine of the first computer or the second computer as a response to the additional request,
The additional data, to receive any node operation portion of the first computer node operation portion or the second computer, that displays by the display terminal processor, data reference system according to claim 2. The update information acquired from the other computers, including a hash value of the updated data in the other computer in correspondence to the updated data,
The index information of the index data storage unit includes a hash value of the data of the repository unit,
The processing engine unit, when the hash value in the index information of the index data storage unit is different from the hash value included in the update information, updated data from the other computer that acquired the update information The data reference system according to claim 1, wherein the data reference system performs processing for acquiring or storing the hash information in the repository unit and adding or overwriting the hash of the data included in the update information to the index information in the index data storage unit. The update information acquired from the other computer includes a hash value of updated data in the other computer and a time stamp indicating the time when the data was updated, corresponding to the updated data,
The processing engine unit, when the hash value in the index information is different from the hash value included in the update information, and the time stamp of the index information is the same as the time stamp included in the update information, The data reference system according to claim 1, wherein processing for transmitting a falsification warning notification to at least one of the computers connected to the computer network is performed. The processing engine may store information for identifying the reference source is the sending computer or treatment process a request to acquire the data in the repository unit, before cut repository unit or the index data storage unit, The data reference system according to claim 1, wherein when the data in the repository unit is updated, the update is notified to the reference source.   The processing engine unit stores the information for specifying the reference source and the information for specifying the data type in any computer connected to the computer network, and stores the reference source and the data type. 8. The data reference system according to claim 7, which enables collection of log data. The data displayed in the display terminal processing unit includes first partial data including confidential information and specified by an ID, and second partial data including only non-sensitive information,
The request to acquire the first partial data is transmitted by specifying the data to be acquired by the ID and encrypted from the display terminal processing unit to the node processing unit of the first computer,
The node processing unit of the first computer encrypts and transmits data including the first partial data and the hash value of the ID to the display terminal processing unit,
The request to acquire the second partial data is transmitted from the display terminal processing unit to the node processing unit of the second computer by specifying the data to be acquired by the hash value of the decrypted ID,
A node processing unit of the second computer transmits data including the second partial data to the display terminal processing unit;
The confidential information contained in the decrypted first partial data and the non-confidential information contained in the second partial data are displayed by the display terminal processing unit in association with each other by the hash value of the ID. 2. The data reference system according to 1. The data reference system according to any one of claims 1 to 9, the display terminal processing unit that generates an image with reference to data by the data reference system , and an input that enables an input associated with the image A medical information system comprising a computer capable of displaying data comprising a device,
The image includes a display of a plurality of cells arranged in a matrix with the business items arranged in one of the rows or columns and the date and / or time arranged in the other of the rows or columns,
At least one of the cells is specified by a business item corresponding to the cell and a date and / or time corresponding to the cell, and a value of data acquired from the node operation unit of the first computer and a request for acquiring the data Displaying at least one of a mark for transmitting to the first computer,
At least one other of the cell is specified by a business item corresponding to the cell and a date and / or time corresponding to the cell, and acquires the data value and the data acquired from the node operation unit of the second computer Displaying at least one of a mark for transmitting the request to the second computer,
When an input for selecting one of the marks is received by the input device, the display terminal processing unit is included in the data specified by the business item and the date and / or time corresponding to the cell with the selected mark. A medical information system that presents information such that it can be viewed in any part of the image. Prior Symbol some data server, test data for different testing in medicine are stored in separate databases,
The work item is test items in medical, wherein at least some of the plurality of cells specified by the inspection items and the date and / or time, to send a request to obtain the value and the test data of the test data medical information system of claim 10 to display at least one of the selectable mark is to provide an inspection data in a medical input device. With reference to the data by the first computer and a second computer included before Symbol data reference system, in the medical information system for generating a composite document display screen including Viewing related data of a work item is the display terminal processor There,
The display terminal processing unit is at least one of a live display unit capable of displaying any data of the business item and a live display mark for transmitting a request to acquire and display the data for the business item Is displayed on the composite document display screen, and the data for the business item is input based on a determination input that is input according to the determination using the data of the business item displayed on the composite document display screen . a freeze display unit updates the composite document display screen is displayed as freeze data is stopped, at least one of the freeze display mark for displaying the freeze data to claim 10 to be displayed on the composite document display screen The medical information system described . The display terminal processing unit stops an update of the freeze data, and an additional live display unit for displaying other data and an additional live display for displaying the other data for the business item of the freeze data one of the mark, is intended to be displayed on the composite document display screen in association with the work item, the medical information system of claim 12. The medical information system according to claim 12, wherein a computer including the display terminal processing unit stores the freeze data in association with data of the composite document display screen. The computer including the display terminal processing unit includes an integration processing unit that integrates the displayed composite document display screen data, freeze data, and live data to generate a single file,
The display terminal processing unit displays the time of integration on the composite document display screen by the single file generated by the integration processing unit without referring to data by the first computer or the second computer. 15. The medical information system of claim 14, wherein a simple document display screen that is substantially identical can be generated. The display terminal processing unit, the live table radical 113 or even to display the live display mark on the simple document display screen generated from the single file, it is possible to generate a composite document display screen, wherein medical information system according to claim 1 5. 13. The medical information system according to claim 12, wherein the freeze data is stored in any of the data servers of the data reference system and is recalled through at least a first computer or a second computer of the data reference system. A data reference method using a first computer and a second computer connected to a computer network having a number of data servers each having a database and operating as a node , wherein any one of the computers connected to the computer network The computer operates the display terminal processing unit,
The first computer and the second computer store a repository unit that holds a subset of data including a part of data of the database, and index information for searching the data of the repository. A node operation unit including an index data storage unit and a processing engine unit,
The processing engine unit obtains update information of data corresponding to the data in the repository unit from another computer connected to the computer network;
The processing engine unit accepting a request from the display terminal processing unit for acquiring data used for display;
The processing engine unit uses the index information of the index data storage unit to check whether data corresponding to the request has been updated in the repository unit ;
When the updated data corresponding to the request is in the repository unit, the processing engine unit converts the updated data into data in a format for the display terminal processing unit as necessary, and Transmitting to the display terminal processing unit as a response to
A data reference method, wherein data from the repository unit of the first computer and data from the repository unit of the second computer are displayed in association with each other and displayed by the display terminal processing unit. A data reference program that is connected to a computer network having several data servers each having a database, and that is executed on a first computer and a second computer that operate as nodes , and which is connected to the computer network That computer operates the display terminal processing unit,
The first computer and the second computer have a repository unit that holds data that is a subset that is a set of data including a part of the data in the database, and index information for searching the data in the repository unit. A step of realizing a node operation unit including an index data storage unit to store and a processing engine unit;
In the processing engine part,
Obtaining update information of data corresponding to the data in the repository unit from another computer connected to the computer network;
Receiving a request from the display terminal processing unit for acquiring data used for display;
Using the index information of the index data storage unit to check whether the data corresponding to the request has been updated in the repository unit ;
When updated data corresponding to the request is in the repository unit, the updated data is converted into data in a format for the display terminal processing unit as necessary, and the display terminal is used as a response to the request. And further executing the step of transmitting to the processing unit,
A data reference program that enables data from the repository unit of the first computer and data from the repository unit of the second computer to be displayed in association with each other by the display terminal processing unit.

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