JP5552368B2 - Thin client terminal, buffering control program - Google Patents

Description

The present invention, Thin client terminal apparatus, the buffering control program relates to, in particular, Thin client terminal apparatus configured as a mobile device, about the buffering control program.

  Currently, there is a thin client system in which functions necessary for service execution processing are concentrated on the server side and only the minimum necessary functions are provided on the client side. In this specification, a server device of a thin client system is referred to as a “thin client server”, and a client terminal device is referred to as a “thin client terminal”. The thin client terminal includes a thin client portable terminal configured as a mobile device. Mobile devices are generally desired to be smaller and lighter. For this reason, it is desired to reduce the capacity of the buffer for storing data in the thin client portable terminal.

  For example, when a service that provides service information represented by IM (Instant Messaging) service or chat service is implemented for a thin client portable terminal, it is necessary to store all information related to the service in the thin client portable terminal. Impossible due to limitations. However, assuming that the mobile terminal is used outside the service area or in a situation where communication is difficult, it is desirable to temporarily store part of the service information on the thin client mobile terminal side.

All of the service information is stored in the thin client server. When the thin client mobile terminal receives new service information, the new service information is stored in the buffer, and the stored service information is deleted from the old one. This buffer operation is also referred to as buffer update in this specification.
In addition, as a conventional technique for updating such a buffer, two buffers are provided, and information stored in one buffer is moved from old information to the other buffer. Has been.

JP 2001-51894 A

In a thin client portable terminal in which a relatively strict limit is imposed on the buffer capacity, when the service information is updated due to reception of new service information while the user is browsing the service information log, the user is browsing Service information may be deleted from the thin client portable terminal.
Such an operation will be described with reference to FIG. FIG. 16 shows a thin client server 161 and a thin client terminal 162. New data d1 is transmitted from the thin client server 161 and received by the thin client terminal 162. At this time, the data d2 is overwritten on the data d1 being referred to by the user and disappears in the thin client terminal.

Such a situation can occur, for example, when a large amount of new service information is received while the user is browsing the service log. Even if the service information being referred to by the user is deleted from the thin client portable terminal, similar data exists in the thin client server. For this reason, the user can request and acquire the deleted service information from the thin client server.
However, requesting service information from the thin client server causes a new communication between the thin client portable terminal and the thin client server. For this reason, the time required for communication is needed, and the problem that provision of a smooth service is prevented occurs. Furthermore, when the thin client portable terminal is out of the communication range, service information cannot be requested from the thin client server.

Further, in order to avoid the occurrence of communication between the mobile terminal and the thin client server, it is conceivable to suppress reception of new service information while the user is browsing the service information. However, in such a method, after referring to the service information, new service information that could not be received from the thin client portable terminal to the thin client server is requested, and thus the above-described problems can be sufficiently solved. I couldn't.
The present invention has been made in view of the above points, and even when new service information is received while the service information is being referred to, the service information being referred to is not deleted, and the new service information is not deleted. information again stone down client terminal device needs to acquire, and to provide a buffering control program.

In order to solve the above problems, a thin client terminal device of the present invention receives data transmitted from a server device (for example, the thin client server 3 shown in FIG. 2) and displays the received data. A data display means for displaying the received data (for example, the service information log shown in FIG. 3) in order to make the user refer to the received data, for example (the thin client portable terminal 4 shown in FIG. 2) A display unit 204), a reference buffer (for example, the reference buffer 207 shown in FIG. 3) for storing reference data to be displayed on the data display unit among the received data, and the data display unit Including a new buffer (for example, the new buffer 206 shown in FIG. 3) in which new data not displayed on the memory is stored. And whether there is the data displayed by the data display means, based on at least one of the continuity of the plurality of data, and the state of the storage area in the reference buffer and the new buffer. Buffer control means (for example, the buffer control unit 205 shown in FIG. 3) for storing the received data in the reference buffer or the new buffer, and the data displayed on the data display means When there is a free area in the reference buffer where the data can be stored, the buffer control means uses the service information log including information indicating the continuity of a plurality of data transmitted from the server device . When the data determined to be continuous with the data stored in the buffer is received, the data is And characterized in that stored in the reference buffer.

The thin client terminal device according to the present invention is a client terminal device that receives data transmitted from a server device and displays the received data. The thin client terminal device receives the data so that the user can refer to the received data. Data display means for displaying the data, reference buffer for storing reference data to be displayed on the data display means among the received data, and new data not displayed on the data display means are stored. A buffer including a new buffer, whether there is the data displayed by the data display means, continuity of the plurality of data, and storage in the reference buffer and the new buffer Based on at least one of the states of the region, the received data is converted into the reference buffer or the new buffer. Comprising a buffer control means for storing in the buffer, and if there is data displayed on the data display means, when there is no free space to store the data in the reference buffer, the buffer control unit, said server When the data determined to be continuous with the data stored in the reference buffer is received by a service information log including information indicating continuity of a plurality of data transmitted from the device, the data is characterized in that to be stored in the new buffer.

The thin client terminal device according to the present invention is a client terminal device that receives data transmitted from a server device and displays the received data. The thin client terminal device receives the data so that the user can refer to the received data. Data display means for displaying the data, reference buffer for storing reference data to be displayed on the data display means among the received data, and new data not displayed on the data display means are stored. A buffer including a new buffer, whether there is the data displayed by the data display means, continuity of the plurality of data, and storage in the reference buffer and the new buffer Based on at least one of the states of the region, the received data is converted into the reference buffer or the new buffer. Comprising a buffer control means for storing in the buffer, and if there is data displayed on the data display means, wherein when the data has a free space to store the reference buffer, the buffer control unit, said server When the data that is determined not to be continuous with the data stored in the reference buffer is received by a service information log including information indicating the continuity of a plurality of data transmitted from the device , the data is characterized in that to be stored in the new buffer.

The thin client terminal device according to the present invention is a client terminal device that receives data transmitted from a server device and displays the received data. The thin client terminal device receives the data so that the user can refer to the received data. Data display means for displaying the data, reference buffer for storing reference data to be displayed on the data display means among the received data, and new data not displayed on the data display means are stored. A buffer including a new buffer, whether there is the data displayed by the data display means, continuity of the plurality of data, and storage in the reference buffer and the new buffer Based on at least one of the states of the region, the received data is converted into the reference buffer or the new buffer. Comprising a buffer control means for storing in a buffer, and the data displayed there is data displayed on unit, it said for the new by the service information log that contains information indicating the continuity of a plurality of data transmitted from the server device When it is determined that there is no continuity between the data stored in the buffer and the data stored in the reference buffer, the buffer control means, after the display of the data in the data display means, while discarding the data stored in the reference buffer, the data stored in the new buffer, characterized in that moving the reference buffer.

The thin client terminal device according to the present invention is a client terminal device that receives data transmitted from a server device and displays the received data. The thin client terminal device receives the data so that the user can refer to the received data. Data display means for displaying the data, reference buffer for storing reference data to be displayed on the data display means among the received data, and new data not displayed on the data display means are stored. A buffer including a new buffer, whether there is the data displayed by the data display means, continuity of the plurality of data, and storage in the reference buffer and the new buffer Based on at least one of the states of the region, the received data is converted into the reference buffer or the new buffer. Comprising a buffer control means for storing in a buffer, and the data displayed there is data displayed on the unit, when the reference of the data stored in the new buffer is required,
The buffer control means requests a reference to a storage area in which the data having lower continuity with the data requested to be referenced is stored among the data stored in the reference buffer. characterized in that moving the data.

The thin client terminal device according to the present invention is a client terminal device that receives data transmitted from a server device and displays the received data. The thin client terminal device receives the data so that the user can refer to the received data. Data display means for displaying the data, reference buffer for storing reference data to be displayed on the data display means among the received data, and new data not displayed on the data display means are stored. A buffer including a new buffer, whether there is the data displayed by the data display means, continuity of the plurality of data, and storage in the reference buffer and the new buffer Based on at least one of the states of the region, the received data is converted into the reference buffer or the new buffer. A thin client terminal device for receiving data transmitted from a server device and displaying the received data, wherein the user is referred to the received data. A data display means for displaying the received data, a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new data not displayed on the data display means A buffer including a new buffer for storing data, whether there is data displayed by the data display means, continuity of the plurality of data transmitted from the server device, and the reference The received data is based on at least one of the state of the storage area in the buffer and the new buffer. Serial reference buffer or a buffer control means for storing the new buffer, from said server device, e Preparations and data acquisition means for acquiring a reference is requested data, and is displayed on the data display means When there is data and a request is made to reference the data that is not stored in the new buffer, the data acquisition means acquires data requested to be referenced from the server device, and the buffer control means includes: It has been the data acquired by the data acquisition means and be stored in the reference buffer.

Further, the thin client terminal device according to the present invention is the above-described invention, wherein the data stored in the reference buffer is obtained by a service information log including information indicating continuity of a plurality of data transmitted from the server device. A reference to data determined to be continuous is requested, and the service information log determines that there is no continuity between the data stored in the new buffer and the data stored in the reference buffer In this case, it is desirable that the data acquisition unit acquires data that is continuous with the data together with the data requested to be referred to by the server device.

Further, the buffering control program of the present invention includes a data display means for displaying data received from the server device for referring to the user, and a reference for displaying the received data among the received data on the data display means. A data buffering control program executed in a thin client terminal device comprising: a reference buffer in which data is stored; and a buffer including a new buffer in which new data not displayed on the data display means is stored. In the computer, a determination function for determining whether or not the data is being displayed by the data display means (for example, the reference determination unit 205a shown in FIG. 3) and the continuity of the plurality of data are determined. continuity determination function (e.g. continuity determination unit 205b shown in FIG. 3), before Kide over data display means The received data based on at least one of the continuity of the plurality of data and the state of the storage area in the reference buffer and the new buffer. A storage function (for example, the storage unit 205c shown in FIG. 3) to be stored in the reference buffer or the new buffer, and there is data displayed on the data display means, and the reference buffer When there is a free space in which the data can be stored, the storage function stores the data stored in the reference buffer by a service information log including information indicating the continuity of a plurality of data transmitted from the server device. If the data is determined to be continuous it has been received and, characterized in that the data to be stored in the reference buffer

According to the present invention, whether data is being displayed by the reference data display means, or based on the continuity of a plurality of data, the data is stored in either the new buffer or the reference buffer Thus, it is possible to provide a thin client system in which, even when new data is received while referring to the data information, the data being referred to is not deleted, and there is no need to acquire new data again.
In addition, according to the present invention, even if new data is received while referring to the data information, the data being referred to is not deleted, and there is no need to acquire new data again. Can be provided.

In addition, according to the present invention, in the above-described thin client terminal device, new data that is highly likely to be referred to continuously while preventing data being displayed from being lost by storing new data. Can be immediately referred to.
Further, according to the present invention, in the above-described thin client terminal device, it is possible to prevent data being displayed from being lost by storing new data.
Further, according to the present invention, in the above-described thin client terminal device, it is possible to avoid data that is unlikely to be referred to following the data being referred to from being stored in the reference buffer and to be referred to subsequently. High-quality data can be preferentially displayed.

Further, according to the present invention, in the above-described thin client terminal device, data that has a high possibility of being continuously referred to can be stored in the reference buffer and can be immediately displayed.
Further, according to the present invention, in the above thin client terminal device, data that is more likely to be referred to following the data requested to be referenced is preferentially deleted, and the thin client terminal device The number of times that communication occurs can be suppressed.

Further, according to the present invention, in the above-described thin client terminal device, data that is requested to be referenced is stored in the reference buffer, so that data that is highly likely to be referred to immediately after the currently referenced data is immediately stored. The state can be referred to.
Further, according to the present invention, in the above-described thin client terminal device, data that is highly likely to be referenced following this data can be acquired together with the data requested to be referenced.

Further, according to the present invention, even when new data is received while referring to data information, the data being referred to is not deleted, and there is no need to acquire new data again. Can be provided.
Further, according to the present invention, even when new data is received while referring to the data information, the data being referred to is not deleted, and there is no need to acquire new data again. Can be provided.

It is a figure for demonstrating the fundamental view of the buffering control method of one Embodiment of this invention. It is a figure for demonstrating the outline | summary of the thin client system of one Embodiment of this invention. FIG. 3 is a functional block diagram of the thin client server and the thin client portable terminal shown in FIG. 2. It is a figure for demonstrating the buffering control method when new service information is received in the state which is not referring the service information memorize | stored in the buffer for reference in one Embodiment of this invention. It is a figure for demonstrating the buffering control method in case one embodiment of this invention is referring the service information memorize | stored in the buffer for reference. It is another figure for demonstrating the buffering control method when the service information memorize | stored in the buffer for reference in one Embodiment of this invention is referring. It is another figure for demonstrating the buffering control method when the service information memorize | stored in the buffer for reference in one Embodiment of this invention is referring. It is another figure for demonstrating the buffering control method when the service information memorize | stored in the buffer for reference in one Embodiment of this invention is referring. It is another figure for demonstrating the buffering control method when the service information memorize | stored in the buffer for reference in one Embodiment of this invention is referring. It is another figure for demonstrating the buffering control method when the service information memorize | stored in the buffer for reference in one Embodiment of this invention is referring. It is another figure for demonstrating the buffering control method when the service information memorize | stored in the buffer for reference in one Embodiment of this invention is referring. It is a figure for demonstrating the buffering control method when reference of service information in one Embodiment of this invention is complete | finished. It is a flowchart for demonstrating the buffering control method when new data is received of one Embodiment of this invention. It is a flowchart for demonstrating the buffering control method when the reference of the service information which is not memorize | stored in the buffer for a reference of one Embodiment of this invention is requested | required. It is a flowchart for demonstrating the buffering control method when reference of service information is complete | finished of one Embodiment of this invention. It is a figure for demonstrating the problem of the prior art of this invention.

(1) Prior to the description of the embodiment of the present invention, the basic concept of the present embodiment will be described.
FIGS. 1A, 1B, and 1C are diagrams for explaining the basic concept of the buffering control method according to the embodiment of the present invention. FIG. 1A is a diagram for explaining the proper use of the new buffer 206 and the reference buffer 207 in the present embodiment.
In the present embodiment, as shown in FIG. 1A, a new buffer 206 and a reference buffer 207 are provided in the thin client terminal. The new buffer 206 is data (referred to as service information in the present embodiment) generated by a service executed in a thin client terminal, and is transmitted from the thin client server in the order of generation (this book). In the present embodiment, this is hereinafter referred to as new service information, and in this embodiment, the service information transmitted from the thin client server until received by the thin client terminal is stored in a buffer using the words of the new service information. After that, it is simply referred to as service information.) Is a buffering (temporarily stored (hereinafter also referred to simply as “stored”)) buffer.

As will be described in detail later, in the present embodiment, retransmission of service information that has occurred in the past may be requested from the thin client terminal side. In such a case, since it is considered that the user refers to the service information requested to be retransmitted, the service information generated in the past is stored in the reference buffer 207.
The reference buffer 207 is a buffer for storing data to be displayed on the thin client terminal. Note that all of the data stored in the reference buffer 207 is not displayed at the same time, and only a part of the data may be displayed. Displaying service information is also referred to as “referenced” in the present embodiment. " The following description relates to buffering control when there is service information being referred to in the thin client terminal.

In the example shown in FIG. 1A, service information 11 to 15 is stored in the reference buffer 207, and service information 16 to 18 is stored in the new buffer 206. At this time, when five pieces of new service information are transmitted from the thin client server, the thin client terminal receives the new service information and stores them in the new buffer 206. As a result, all the new service information is stored in the new buffer 206, and the previously stored service information 16-18 is deleted.
According to the present embodiment, it is possible to prevent the service information being referred to from being overwritten by the new service information and disappearing from the display screen.

FIG. 1B is a diagram for explaining buffering control when there is continuity between the service information stored in the new buffer 206 and the service information stored in the reference buffer 207. It is. When the user requests reference to the service information 16 and 17 among the service information stored in the new buffer 206, in the present embodiment, the service information 16 and 17 stored in the new buffer 206 is used as the reference buffer. Move to 207.
According to the present embodiment, new service information can be received even when there is service information being referred to, and the service information can be displayed to the user without the thin client terminal performing communication. .
FIG. 1C is a diagram showing a reference example to be compared with the present embodiment. According to FIG. 1C, it can be seen that if the new buffer 206 is used as it is for the reference buffer 207, the service information being referred to may be overwritten and discarded by the new service information.

(2) System Overview Hereinafter, a thin client terminal according to the present embodiment and a service information buffering control method in the thin client terminal will be described. Note that the thin client terminal in the present embodiment refers to a communication terminal device having only a minimum function necessary for executing a certain program. The minimum necessary function referred to in the present embodiment is a minimum network function required for the thin client terminal to connect to the server device, or a GUI (Graphical User) for the user to input / output data to / from the thin client terminal. Interface) function. However, the thin client terminal according to the present embodiment is not limited to the configuration having such a function, but may further include other functions, and the function provided in the present embodiment may be provided in the server device. It may be provided.
Some of such thin client terminals are dedicated to this application, narrowing down the functions used in a specific application.

  FIG. 2 is a diagram for explaining a thin client system including the thin client portable terminal 4 which is the thin client terminal of the present embodiment. The network includes an Internet N1 and a telecommunications carrier network N2 provided by a telecommunications carrier. A service server 1 for providing a service is connected to the Internet N1, and a service server 2 is connected to a communication carrier network N2. The service servers 1 and 2 and the thin client server 3 transmit and receive data via the Internet N1 and the communication carrier network N2.

  A thin client server 3 is connected to the thin client system shown in FIG. The thin client server 3 transmits / receives service information to / from the thin client portable terminal 4 and executes the application. As described above, since the thin client portable terminal 4 has only a minimum function necessary for executing an application program (hereinafter, simply referred to as an application in the present embodiment), the thin client server 3 It performs more processing than a typical server device.

  The thin client server 3 of this embodiment has a dedicated application A and a general application B, and can provide services from either the dedicated application A or the general application B. A general portable terminal 5 has a function of executing a dedicated application C and a general application D provided by the service servers 1 and 2. In this embodiment, it is assumed that the thin client portable terminal 4 uses a service provided from the dedicated application A for such a portable terminal 5.

(3) Thin Client Server, Thin Client Portable Terminal FIG. 3 is a functional block diagram of the thin client server 3 and the thin client portable terminal 4 shown in FIG. The thin client server 3 has a function of executing service processing generally performed on the client device side such as a mobile device. In the example shown in FIG. 3, this function is shown as a service program 202.
Further, in the service executed by the thin client server 3 of the present embodiment, service information related to this service is generated. The thin client server 3 includes a service information log recording unit 201 in which service information is recorded as log information. In the service information log recording unit 201, the service information transmitted to the thin client portable terminal 4, the date and time of transmission, the order of a plurality of service information when the service information is continuous in a predetermined order, and the like as the service information log To be recorded.

In addition, as an example in which a plurality of service information is continuous, for example, a message log generated in an IM service or a chat service can be considered. In this embodiment, a “serial number” is assigned to each piece of continuous service information. The serial number attached to one end is a number unique to the service information.
In the present embodiment, the continuity of service information is determined by the serial number attached to the service information. Here, “continuity” refers to continuity based on the semantic content of service information. For example, in the case of a chat service, service information transmitted and received in the chat is arranged in time series, and a serial number is assigned in ascending order from the service information transmitted and received earlier. For example, when the service information is text data or image data of an electronic book, serial numbers with smaller numbers are assigned in order from the smallest number of pages of the electronic book represented by the service information.

Further, the continuity between one service information and other service information is determined to be higher as the serial number is closer, and is determined to be lower as the serial number is different (far). Then, by adding a serial number to the service information and recording it in the service information log recording unit 201, the present embodiment can manage the continuity of the service information. In the present embodiment, the service information log refers to service information assigned a serial number, or service information stored or displayed in the order according to the serial number.
On the other hand, the thin client portable terminal 4 includes a GUI function 209 for the user to perform an input operation and display the operation result, and a network function 208 for transmitting the operation result to the thin client server 3. However, the thin client portable terminal 4 of this embodiment is merely one example having only a minimum function, and is not limited to the illustrated configuration.

  Further, the thin client portable terminal 4 needs to store service information possessed by the thin client server 3 in consideration of a case where communication with the thin client server 3 is not possible, such as when out of service area. However, as already described, it is impossible to store all the service information of the thin client server 3 in the thin client portable terminal 4 due to the limitation of the buffer capacity of the thin client portable terminal 4. For this reason, when the user wants to acquire service information not on the buffer, it is necessary to access the thin client server 3 to acquire data. For this reason, the thin client portable terminal 4 includes a service information log acquisition unit 203.

Further, the thin client portable terminal 4 includes a service information log display unit 204, a buffer control unit 205, a new buffer 206, and a reference buffer 207. The service information log acquisition unit 203 has a function of displaying the service information requested for reference on a display (not shown) or the like when the user requests reference of past service information in a chat service or the like. The user refers to the service information displayed on the service information log display unit 204. For this reason, “referencing service information” in the present embodiment refers to a state in which service information is displayed on the service information log display unit 204.
The new buffer 206 is a buffer for storing newly received service information. The reference buffer 207 is a buffer that stores service information for display on the service information log display unit 204. The service information can be displayed by being stored in the reference buffer 207.

  The buffer control unit 205 is configured to control the storage state of service information in the reference buffer 207 and the new buffer 206. As illustrated, the buffer control unit 205 includes a reference determination unit 205a, a continuity determination unit 205b, and a storage unit 205c. Each of the reference determination unit 205a, the continuity determination unit 205b, and the storage unit 205c is a unit of a computer program that executes predetermined processing. The reference determination unit 205a has a function of determining whether or not service information is being displayed by the service information log display unit 204. Further, the continuity determination unit 205b has a function of determining continuity of a plurality of service information. Further, the storage unit 205c determines whether there is service information displayed by the service information log display unit 204, the continuity of a plurality of service information, and the state of the storage area in the reference buffer 207 and the new buffer 206. Based on at least one, it has a function of storing the received service information in the reference buffer 207 or the new buffer 206.

Such control by the buffer control unit 205 is performed based on whether or not the stored service information is being referred to. In the buffer control unit 205, the reference determination unit 205a can detect the state of the service information log display unit 204 and determine whether the service information is being referred to.
The thin client portable terminal 4 of the present embodiment having such a configuration receives the service information transmitted from the thin client server 3, and newly receives the received service information by the storage unit 205 c in the buffer control unit 205. Stored in the buffer 206 or the reference buffer 207. The storage unit 205c can acquire the state of the storage area from the reference buffer 207 and the new buffer 206.

In the present embodiment, the thin client server 3 transmits the service information with the serial number described above to the thin client portable terminal 4. The continuity determination unit 205b of the buffer control unit 205 determines the continuity of the service information from the serial numbers assigned to the service information stored in the new buffer 206 and the reference buffer 207. The continuity as used in the present embodiment includes whether or not serial numbers are continuous (whether there is continuity) and a difference between serial numbers (which will be described later as serial numbers are far or close).
Further, in the present embodiment, the user operates the thin client portable terminal 4 using the GUI function 209 in order to specify service information for requesting reference. The buffer control unit 205 determines service information to be stored in the reference buffer 207 based on the content of the operation input via the GUI function 209.

(4) Buffering Control Method FIGS. 4 to 12 are diagrams for specifically explaining the buffering control of service information in the thin client portable terminal 4 shown in FIGS. 4 to 12, the storage area of the entire buffer provided in the thin client portable terminal 4 is shown in a 5 × 2 matrix, the upper row of the matrix shows the new buffer 206, and the lower row shows the reference buffer 207. To do. Each column of the matrix shows the serial number of the stored service information. The serial number indicates that the smaller the number is, the earlier it is stored. It is assumed that the data amount of each of the plurality of service information with serial numbers is the same.
In any of FIGS. 5 to 12, service information represented by a thick line in the service information stored in the reference buffer 207 indicates the service information being referred to.

(I) When the service information is not being referenced FIGS. 4A and 4B illustrate buffering when new service information is received while the service information stored in the reference buffer 207 is not being referenced. It is a figure for demonstrating a control method. In the example illustrated in FIG. 4, the thin client portable terminal 4 illustrated in FIGS. 2 and 3 stores the new service information transmitted from the thin client server 3 only in the reference buffer 207. At this time, for example, as shown in FIG. 4A, in a state where no more service information can be stored in the reference buffer 207, that is, in a state where five pieces of service information 11 to 15 are stored in the reference buffer 207. When the new service information 16 is further received, the buffer control unit 205 shown in FIG. 2 discards the service information 11 with the smallest serial number as shown in FIG. 4B, and uses the service information 16 as a reference buffer. Store in 207.

(II) When referring to service information Hereinafter, a buffering control method when service information is being referred to will be described.
(1) When there is continuity between the service information stored in the new buffer and the service information stored in the reference buffer Next, the service information is stored in the reference buffer 207 while the service information is being referenced. A buffering control method when there is continuity between the service information stored in the service buffer and the service information stored in the new buffer 206 will be described. As described above, the continuity determination is performed by the continuity determination unit 205b illustrated in FIG.

In this embodiment, when new service information is received while referring to service information, there is a storage area in which the service information of the reference buffer 207 is not stored (hereinafter also referred to as an empty area in this embodiment). The new service information is stored in an empty area of the reference buffer 207.
For example, as shown in FIG. 5A, when service information 11 to 13 is stored in the reference buffer 207, new service information 14 and 15 are received. As shown in FIG. 5B, when there is an empty area in the reference buffer 207, the buffer control unit 205 stores the new service information 14 and 15 in the reference buffer 207.

  Further, when there is no free area in the reference buffer 207 and there is an empty area in the new buffer 206, when new service information is received while referring to the service information, the received new service information is stored in the new buffer 206. Remembered. For example, when the service information 11 to 15 is stored in the reference buffer 207 and the service information 16 is stored in the new buffer 206 as shown in FIG. 5C, the new information as shown in FIG. The service information 17 to 20 received in the above is stored in the new buffer 206.

  When the service information 21 is further received, as shown in FIG. 5 (e), the oldest service information among the service information stored in the new buffer 206 (in the example shown in FIG. 5 (e), the service information 16) is deleted, and the new service information 21 is stored in the new buffer 206. In this example, since service information is being referred to, the service information 11 and 12 are not moved to the new buffer 206.

  According to the embodiment described above, when the service information is not being referred to and there is an empty area in the reference buffer 207, the new service information can be stored in the reference buffer 207 and can be immediately displayed. . Even when there is no free space in the reference buffer 207, the service information can be stored in the new buffer 206 and moved to the reference buffer in response to a user request.

(2) When there is no continuity between the service information stored in the new buffer and the service information stored in the reference buffer Next, the service information is stored in the reference buffer 207 while referring to the service information. A buffering control method when there is no continuity between existing service information and service information transmitted from the thin client server 3 will be described. In such a case, in the present embodiment, even if there is an empty area in the reference buffer 207, the received service information is stored in the new buffer 206.

For example, it is assumed that service information 11 to 13 is stored in the reference buffer 207 as illustrated in FIG. At this time, as shown in FIG. 6B, when the service information 31, 32 is received, the service information 31, 32 is stored in the free area of the new buffer 206.
In this embodiment, when there is no continuity between the service information stored in the reference buffer 207 and the newly transmitted service information, when referring to service information not on the reference buffer 207, When referring to continuous service information, continuous service information is acquired from the thin client server 3.

  For example, in the state shown in FIG. 6B, when the user requests to reference the service information 14, the service information log acquisition unit 203 receives the service information 14 from the thin client server 3 as shown in FIG. And service information 15 that is continuous with the service information 14 is acquired. When the reference of the service information 14 and 15 is ended, the service information 31 and 32 exist in the new buffer 206. The buffer control unit 205 discards all the service information stored in the reference buffer 207 and moves the service information 31 and 32 from the new buffer 206 to the reference buffer 207 as shown in FIG.

  Next, there is no continuity between the service information stored in the reference buffer 207 and the service information stored in the new buffer 206, and there is no free space in the new buffer 206 and the reference buffer 207. A ring control method will be described. In this description, as shown in FIG. 7A, it is assumed that the service information 11 to 15 is stored in the reference buffer 207 and the service information 14 and 15 are being referred to. In addition, it is assumed that service information 20 to 24 is stored in the new buffer 206. At this time, when the user requests to reference the service information 16 to 18, the service information 16 to 18 is acquired from the thin client server 3 by the service information log display unit 204 shown in FIG. 3.

  The acquired service information 16 to 18 is stored in the reference buffer 207 by the buffer control unit 205. At this time, as shown in FIG. 7B, the service information stored in the reference buffer 207 includes service information 11 having the largest serial number difference from the service information 16 to 18 requested by the user for reference, Service information 11 to 13 having the same data amount as the service information 16 to 18 is discarded.

According to the present embodiment, when service information that is unlikely to be continuously referenced is received, the service information is prevented from being stored in the reference buffer 207 and stored in the reference buffer 207. Thus, it is possible to secure a storage area for storing service information that is highly likely to be referenced following the service information.
(3) When there is continuity between the service information stored in the reference buffer and the service information stored in the new buffer

Next, a buffering control method when a reference to service information stored in the new buffer 206 is requested will be described.
As illustrated in FIG. 8A, when the service information 16 to 18 is stored in the new buffer 206 and the service information 11 to 15 is stored in the reference buffer 307, the buffer control unit 205 displays the service information Is determined to have continuity. When the user tries to refer to the service information 16 already stored in the new buffer 206, the user operates the thin client portable terminal using the GUI function shown in FIG. The buffer control unit 205 detects that reference to the service information 16 is requested by a user operation.
At this time, as shown in FIG. 8B, the buffer control unit 205 discards the oldest service information 11 which is the service information having the lowest continuity with the service information 16 in the reference buffer 207, and creates a new The service information 16 is moved from the buffer 206 to the reference buffer 207.

Further, as shown in FIG. 9A, when the service information 16 to 20 is stored in the new buffer 206 and there is no room for storing more service information, the user will refer to the service information 16. In this case, as shown in FIG. 9B, the oldest service information 11 is discarded in the reference buffer 207, and the service information 16 is moved from the new buffer 206 to the reference buffer 207.
According to the present embodiment, it is possible to prevent the thin client portable terminal from requesting retransmission of service information that could not be received, and prevent the thin client server 4 from resending service information in response to the request. For this reason, the frequency | count of communication between the thin client portable terminal 4 and the thin client server 3 can be suppressed.

(III) When reference to service information not stored in new buffer and reference buffer is requested Next, when user requests reference to service information not stored in new buffer and reference buffer 207 A buffering control method will be described. In such a case, the buffer control unit 205 communicates with the thin client server 3 by the network function 208 shown in FIG. Then, service information is acquired by the service information log acquisition unit 203 shown in FIG. 3 and stored in the reference buffer 207.

At this time, since the new buffer 206 is a buffer used for referring to the new service information, the service information is not stored unless the new service information is received when the service log reference is started.
In order to immediately display the service information requested to be referred to by the user, the thin client portable terminal 4 stores the service information acquired from the thin client server 3 in the reference buffer 207. For this reason, the buffer control unit 205 shown in FIG. 3 moves the latest service information among the service information already stored in the reference buffer 207 to an empty area of the new buffer 206.

For example, as illustrated in FIG. 10A, it is assumed that service information 11 to 15 is stored in the reference buffer 207 and no more service information can be stored. In this state, as shown in FIG. 10 (b), when the service information 10, 9, 8 before the service information 11 is acquired, the buffer control unit stores the service information 10, 9, 8 205 newly uses service information 13, 14, 15 having a data amount that matches the data amount of the service information 10, 9, 8 from the service information having a large serial number among the service information already stored in the reference buffer 207. Move to buffer 206.
Note that when there is no free space in the new buffer 206 and service information is further acquired from the thin client server 3, the service information in the reference buffer 207 that is greatly different from the service information that the user is trying to refer to Are discarded in order.

For example, as shown in FIG. 10C, when the service information 6 to 10 is stored in the reference buffer 207 and the service information 11 to 15 is already stored in the new buffer 206, the service information log acquisition unit 203 It is assumed that service information 3 to 5 has been acquired. At this time, the new buffer 206 has no free space in which service information can be further stored. For this reason, the buffer control unit 205 includes the service information 10 having the farthest serial number from the service information 6 to 10 stored in the reference buffer 207 as shown in FIG. The service information 8 to 10 having the same data amount as the service information 3 to 5 is discarded. Such control is different from the case where there is an empty area in the new buffer 206.
According to the present embodiment as described above, it is possible to preferentially delete service information that is unlikely to be referenced following the service information requested to be referenced. For this reason, the frequency | count of communication between the thin client portable terminal 4 and the thin client server 3 can be suppressed.

(IV) When a reference between service information stored in the reference buffer and service information not stored in the reference buffer is requested As described in (III), in this embodiment, the new buffer 206 is used. When the reference of service information not stored in the reference buffer 207 is requested, the thin client portable terminal 4 shown in FIGS. 2 and 3 requests the thin client server 3 to transmit the requested service information. To do. Further, as described in “(3)” of (II), when reference to service information stored in the new buffer 206 is requested, the thin client portable terminal 4 is stored in the new buffer 206. The service information is moved to the reference buffer 207.

  For example, when the service information 20 to 24 is stored in the new buffer 206 and the service information 14 to 18 is stored in the reference buffer 207 as shown in FIG. Suppose we requested -21 references. At this time, in this embodiment, the buffer control unit 205 shown in FIG. 3 requests the thin client server to transmit the service information 19 via the network function 208. The service information 19 transmitted in response to the request is stored in the reference buffer 207.

  In addition, the buffer control unit 205 moves the service information 20 and 21 stored in the new buffer 206 to the reference buffer 207. Of the service information stored in the reference buffer 207 by the storage of the service information 19 and the movement of the service information 20 and 21, the service information 14 having a large serial number difference from the service information 19 to 21 requested by the user for reference. The service information 14 to 16 having the same data amount as the service information 19 to 21 is discarded in the reference buffer 207.

(V) When Ending Reference to Service Information Next, a case where reference to service information is ended will be described.
When the reference of service information is terminated in a state where the latest service information is stored in the new buffer 206, all service information stored in the reference buffer 207 is discarded in this embodiment. Then, at the next service information reference time, the service information stored in the new buffer 206 is moved to the reference buffer 207.

In the present embodiment, the next service is not discarded without discarding the service information stored in the reference buffer 207 only when there is no service information stored in the new buffer 206 when the service information reference ends. The information is also stored in the reference buffer 207 when referring to the information.
For example, as shown in FIG. 12A, when the service information 20 to 24 is stored in the new buffer 206 and the service information 14 to 18 is stored in the reference buffer 207, the reference of the service information is completed. It shall be assumed. At this time, in this embodiment, as shown in FIG. 12B, all the service information 14 to 18 stored in the reference buffer 207 is discarded.

Further, for example, as shown in FIG. 12C, it is assumed that the reference of the service information is completed in a state where the service information is not stored in the new buffer 206. At this time, in this embodiment, as shown in FIG. 12D, the service information 14 to 18 stored in the reference buffer 207 is not deleted, but is kept in the stored state. The service information 14 to 18 that has not been deleted is continuously stored in the reference buffer 207 when the next service information is referred to.
In the present embodiment described above, the functions of the new buffer 206 and the reference buffer 207 can be switched at a timing such as when both are in a state where no service information is stored.

13 to 15 are flowcharts for explaining the buffering control method described above. Among these, FIG. 13 is a flowchart for explaining a buffering control method when new data is received.
As shown in FIG. 13, in this embodiment, new service information is received by the thin client portable terminal (step S131). At this time, the buffer control unit determines whether or not the service information stored in the reference buffer is being referred to (step S132). If it is determined in step S132 that the service information is not being referred to (step S132: No), an empty area (in FIG. 13 to FIG. 15, indicated as “reference”) in the reference buffer (in FIG. It is determined whether or not there is a “vacant” (step S139). If there is an empty area in the reference buffer (step S139: Yes), new service information is stored in this empty area (step S141). If there is no free space in the reference buffer (step S139: No), the oldest service information (service information with the smallest serial number) among the service information stored in the reference buffer is discarded (step S140). The new service information is stored in the storage area where the discarded service information was stored (step S141).

  On the other hand, if it is determined in step S132 that the service information is being referred to (step S132: Yes), whether there is continuity between the new service information and the service information stored in the reference buffer. Determination is made (step S133). In this embodiment, “there is continuity between service information” refers to a state in which the serial number of one service information and the serial number of other service information are continuous. “There is no continuity between service information” means that the serial number of one service information and the serial number of other service information are not continuous.

If it is determined in step S133 that there is no continuity (step S133: No), it is determined whether there is a free area in the new buffer (step S136). If there is no free space in the new buffer (step S136: No), the oldest service information among the service information stored in the new buffer is discarded (step S137), and the discarded service information is stored. The new service information is stored in the stored storage area (step S138).
If there is an empty area in the new buffer (step S136: Yes), the new service information is stored in the empty area of the new buffer (denoted as “new” in FIG. 13) (step S138).

If it is determined in step S133 that the service information has continuity (step S133: Yes), it is determined whether there is a free area in the reference buffer (step S134). If there is no empty area in the reference buffer, it is determined whether or not there is an empty area in the new buffer (step S136).
If it is determined in step S134 that there is an empty area in the reference buffer (step S134: Yes), the new service information is stored in the empty area of the reference buffer (step S135).

FIG. 14 is a flowchart for explaining a buffering control method when a reference to service information not stored in the reference buffer is requested.
As shown in FIG. 14, in the present embodiment, when a reference to service information not stored in the reference buffer is requested (step S142), first, the requested service information is stored in the reference buffer. It is determined whether the service information is older than the latest service information (shown as the latest service information in FIG. 14) or new service information.

  When reference to service information older than the latest service information is requested (step S143), the buffer control unit determines whether or not there is a free area in the reference buffer (step S144). If there is no free space in the reference buffer (step S144: No), among the service information stored in the reference buffer, the oldest (small serial number) service information is discarded, and the service information for which reference is requested. Obtained from the thin client server (step S147).

  If it is determined in step S144 that there is a free area in the reference buffer (step S144: Yes), the service information requested to be referenced (denoted as “new” in FIG. 14) is stored in the reference buffer. It is determined whether or not there is continuity with the service information being processed (step S145). If it is determined that there is no continuity (step S145: No), the service information is discarded in step S147, and the service information for which reference is requested is acquired from the thin client server.

  On the other hand, if it is determined that there is continuity between the service information stored in the new buffer and the service information stored in the reference buffer (step S145: Yes), the service information is stored in the reference buffer. Of the existing service information, newer service information is moved to the new buffer, and the service information for which reference is requested is acquired from the thin client server (step S146).

  When a reference to service information that is newer than the latest service information stored in the reference buffer is requested (step S148), the buffer control unit determines whether there is an empty area in the reference buffer (step S148). S149). If there is no free area in the reference buffer (step S149: No), it is determined whether or not any service information is stored in the new buffer (step S154). When there is no service information stored in the new buffer (step S154: No), the oldest service information among the service information stored in the reference buffer is moved to the new buffer, and a reference is requested. Service information is acquired from the thin client server (step S157).

  Also. In step S154, when it is determined that there is service information stored in the new buffer (step S154: Yes), service information stored in the reference buffer and service information stored in the new buffer It is determined whether or not there is continuity between them (step S155). As a result, if it is determined that there is continuity (step S155: Yes), the oldest service information among the service information stored in the reference buffer is discarded, and the service information for which reference is requested is the thin client. Obtained from the server (step S156).

  If it is determined in step S149 that there is an empty area in the reference buffer (step S149: Yes), it is determined whether or not any service information is stored in the new buffer (step S150). When there is no service information stored in the new buffer (step S150: No), the service information requested to be referenced is acquired from the thin client server (step S153).

If it is determined in step S150 that there is service information stored in the new buffer (step S150: Yes), the service information stored in the reference buffer and the new buffer are stored. It is determined whether or not there is continuity with the service information (step S151). If it is determined in step S151 that there is no continuity (step S151: No), in step S153, the service information requested for reference is acquired from the thin client server.
Furthermore, if it is determined in step 151 that there is continuity between the service information stored in the reference buffer and the service information stored in the new buffer (step S151: Yes), a request for reference is made. The service information thus moved is moved from the new buffer to the reference buffer (step S152).

FIG. 15 is a flowchart for explaining a buffering control method when reference to service information is terminated. As shown in FIG. 15, in this embodiment, when the reference of service information is completed (step S161), it is determined whether or not there is service information stored in the new buffer (step S162). . If the service information is not stored in the new buffer (denoted “new” in FIG. 15) as a result of the determination (step S164: No), all the service information stored in the reference buffer is discarded, The buffer on which the information is discarded is used as a new buffer, and the buffer that has been functioning as a new buffer is used as a reference buffer (step S164), and the processing ends.
If it is determined in step S162 that service information is not stored in the new buffer (step S162: Yes), the process is terminated as it is.

  The present invention described above can be applied to a thin client system including a thin client terminal device, and is particularly effective when applied to a portable thin client terminal in which the buffer capacity is severely limited.

DESCRIPTION OF SYMBOLS 3 Thin client server 4 Thin client portable terminal 201 Service information log recording part 202 Service program 203 Service information log acquisition part 204 Service information log display part 205 Buffer control part 206 New buffer 207 Reference buffer 208 Network function 209 GUI function

Claims (8)

A thin client terminal device that receives data transmitted from a server device and displays the received data,
Data display means for displaying the received data to allow the user to refer to the received data;
A buffer including a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new buffer for storing new data not displayed on the data display means; ,
Whether there is data displayed by the data display means, at least one of the continuity of the plurality of data transmitted from the server device, and the state of the storage area in the reference buffer and the new buffer And the buffer control means for storing the received data in the reference buffer or the new buffer.
When there is data displayed on the data display means and there is a free area in the reference buffer where the data can be stored,
The buffer control means includes
When the data determined to be continuous with the data stored in the reference buffer is received by a service information log including information indicating continuity of a plurality of data transmitted from the server device , the data is , features and be Resid down client terminal device that is stored in the reference buffer. A thin client terminal device that receives data transmitted from a server device and displays the received data,
Data display means for displaying the received data to allow the user to refer to the received data;
A buffer including a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new buffer for storing new data not displayed on the data display means; ,
Whether there is data displayed by the data display means, at least one of the continuity of the plurality of data transmitted from the server device, and the state of the storage area in the reference buffer and the new buffer And the buffer control means for storing the received data in the reference buffer or the new buffer.
When there is data displayed on the data display means and there is no free space in the reference buffer where the data can be stored,
The buffer control means includes
When the data determined to be continuous with the data stored in the reference buffer is received by a service information log including information indicating continuity of a plurality of data transmitted from the server device , the data is , features and be Resid down client terminal device that is stored in the new buffer. A thin client terminal device that receives data transmitted from a server device and displays the received data,
Data display means for displaying the received data to allow the user to refer to the received data;
A buffer including a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new buffer for storing new data not displayed on the data display means; ,
Whether there is data displayed by the data display means, at least one of the continuity of the plurality of data transmitted from the server device, and the state of the storage area in the reference buffer and the new buffer And the buffer control means for storing the received data in the reference buffer or the new buffer.
When there is data displayed on the data display means, and there is a free capacity capable of storing the data in the reference buffer,
The buffer control means includes
When the data that is determined not to be continuous with the data stored in the reference buffer is received by a service information log including information indicating continuity of a plurality of data transmitted from the server device , the data a feature and be Resid down client terminal device that is stored in the new buffer. A thin client terminal device that receives data transmitted from a server device and displays the received data,
Data display means for displaying the received data to allow the user to refer to the received data;
A buffer including a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new buffer for storing new data not displayed on the data display means; ,
Whether there is data displayed by the data display means, at least one of the continuity of the plurality of data transmitted from the server device, and the state of the storage area in the reference buffer and the new buffer And the buffer control means for storing the received data in the reference buffer or the new buffer.
The data displayed in the data display means, and the data stored in the new buffer by the service information log including information indicating the continuity of the plurality of data transmitted from the server device and the reference buffer If it is determined that there is no continuity with the data stored in
The buffer control means includes
After the display of the data in the data display means, the data stored in the reference buffer is discarded, and the data stored in the new buffer is moved to the reference buffer. Cie down client terminal device. A thin client terminal device that receives data transmitted from a server device and displays the received data,
Data display means for displaying the received data to allow the user to refer to the received data;
A buffer including a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new buffer for storing new data not displayed on the data display means; ,
Whether there is data displayed by the data display means, at least one of the continuity of the plurality of data transmitted from the server device, and the state of the storage area in the reference buffer and the new buffer And the buffer control means for storing the received data in the reference buffer or the new buffer.
When there is data displayed on the data display means, and a reference to the data stored in the new buffer is requested,
The buffer control means includes
The data requested for reference is moved to a storage area in which the data having lower continuity with the data requested for reference is stored among the data stored in the reference buffer. features and to Resid down client terminal apparatus that is. A thin client terminal device that receives data transmitted from a server device and displays the received data,
Data display means for displaying the received data to allow the user to refer to the received data;
A buffer including a reference buffer for storing reference data to be displayed on the data display means among the received data, and a new buffer for storing new data not displayed on the data display means; ,
Whether there is data displayed by the data display means, at least one of the continuity of the plurality of data transmitted from the server device, and the state of the storage area in the reference buffer and the new buffer based on, e Bei the reference buffer the received said data are or a buffer control means for storing the new buffer, from the server device, a data acquisition means for acquiring a reference is requested data, the ,
When there is data displayed on the data display means and a reference to the data not stored in the new buffer is requested,
The data acquisition means acquires data requested to be referenced from the server device,
Said buffer control means, said been data acquired by the data acquisition unit, wherein the to Resid down client terminal device that is stored in the reference buffer. Wherein the service information log that contains information indicating the continuity of a plurality of data transmitted from the server apparatus, the reference data that is determined to be continuous with data stored in the reference buffer is required, and the service When it is determined by the information log that there is no continuity between the data stored in the new buffer and the data stored in the reference buffer,
The thin client terminal device according to claim 6 , wherein the data acquisition unit acquires data that is continuous with the data together with the data requested to be referred to by the server device. Data display means for displaying the data received from the server device for referring to the user, out of the received data, a reference buffer for storing reference data for display on the data display means, A buffering control program for data executed in a thin client terminal device, comprising: a buffer for new data that is not displayed on the data display means;
On the computer,
A determination function for determining whether or not the data is being displayed by the data display means;
A continuity determination function for determining the continuity of the plurality of data;
Whether there is the data that is displayed by the front Kide over data display means, the continuity of a plurality of data, and the reference buffer, based on at least one state of the storage area in the new buffer A storage function for storing the received data in the reference buffer or the new buffer ; and
When there is data displayed on the data display means and there is a free area in which the data can be stored in the reference buffer, the storage function indicates continuity of a plurality of data transmitted from the server device. Buffering, wherein when the data determined to be continuous with the data stored in the reference buffer is received by a service information log including information, the data is stored in the reference buffer Control program.

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