JP2002304321A - Information contents download system, server device, server device program and recording medium therefor, and terminal device program and recording medium therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contents download system capable of downloading a large amount of contents from a server device to a terminal device even under the conditions in which the memory capacity of the terminal device and download time are restricted. SOLUTION: Information contents 4 stored in the server device 1 is referred to by attribute information, criticality information, and capacity information. The server device 1 determines the priority of feeding the information contents based on the attribute information and criticality information designated by the terminal device 2 and the memory capacity information of the terminal device, and sends the information contents 4 to the terminal device 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information download service that downloads information contents from a server device or the like to a terminal device and allows a user to use the information contents.

[0002]

2. Description of the Related Art In recent years, all materials (contents) such as images, music, and mail messages can be handled as digital information. As a result, these information contents are downloaded from a server device to a terminal device owned by the user. Alternatively, by downloading from a terminal device to another terminal device, the user can enjoy viewing and subscribing. An information download service that downloads information content to such a terminal device provides a user with only necessary information content from a large number of information contents stored in a server device or a terminal device of the other party. Let them choose interactively,
It is realized under a communication system or communication software in which only necessary items are narrowed down and downloaded each time.

[0003] In such an information download service, a time zone in which a user selects and enjoys information content often overlaps with a time zone in which the user relaxes at home or the like, so that opportunities for downloading the content are concentrated in a specific time zone. Cheap. As a result, communication congestion in which the majority of downloads occur is concentrated in a specific time zone regardless of the charge of the communication line, and transmission and reception of content data are
The transmission and reception operations are mutually controlled, and a situation may occur where delays are infinite.

[0004] In order to alleviate this situation, a communication method in which a user designates information content to be downloaded in advance and the terminal device automatically starts communication with the server device even when the user is absent, and acquires the information content. Is being developed. According to this method, information content can be obtained in a comfortable time zone when the majority of users do not use it.

[0005] However, this method has a problem that the memory capacity that can be stored in the terminal device and the communication time that can be communicated must have a sufficient margin for the total amount of information contents to be downloaded. For example, in the case of downloading a mail message, at the time when the mail message is stored in the server device, the capacity (size) of each message varies, and a terminal device having only a small memory can download all messages. Whether it is or not is uncertain. Also, not all messages are equally important information for the user, and the user may lose a chance to download a message to be received promptly due to reception of meaningless information. In order not to lose the opportunity to download a message to be received, it is necessary to select content depending on some prior information. This problem of content selection becomes more prominent when the size of one information content becomes large, such as high-quality music data and moving image data. In the case of billing,
It is also restricted in terms of communication charges.

[0006]

As will be understood from the description of the prior art, when downloading information contents from a server device to a terminal device, information contents to be downloaded or downloadable information contents are downloaded. The determination of the order is an important matter in building an information download service that can satisfy the user. Then, in order to determine the order of downloading the information contents, the following four criteria can be considered.

[0007] First, in a situation where the memory stored in the terminal device is not sufficient and it is not possible to receive all the content specified by the user in one download opportunity, the user terminal device side Therefore, it is desirable that the content of the information content be grasped in advance by using simple attribute information such as a flag or a keyword that characterizes the information content, that the download of the information content be prioritized, and that the download be performed in the order of the priority. According to this method, it is possible to grasp which information contents should be narrowed down and downloaded, and it is possible to receive important information contents first and postpone unnecessary information later. At this time, instead of uniformly evaluating all the attribute information, if the priority order and importance are determined among the attribute information, the information contents to be downloaded can be ranked.

[0008] Second, it is desirable that the server device side can determine the priority order of downloading information contents. For example, guidance information such as service stoppage due to irregular maintenance and inspection of the server device is the most important information related to the service itself, and therefore should be given a higher priority than attribute information.

Third, in order to utilize the memory capacity of the terminal device to the utmost, the criterion of storing as many information contents as possible in the memory of the terminal device is considered in consideration of the priority of the attribute information to some extent. It is desirable to be able to download information content by using For example, with respect to a predetermined memory capacity, the number of information contents that can be stored in the memory capacity is one for information contents having the third priority and one for information contents having the fourth or lower priority. In situations where there are three, the fourth priority
The three information contents below the rank have the higher priority of 1.
It is downloaded in preference to individual information contents.

[0010] Fourth, it is desirable that the call time (charge) can be considered as a factor for determining the upper limit of the download capacity, in addition to the memory capacity of the terminal device. For example, when trying to realize a service that completes download within three minutes every day under a communication line of pay-per-use based on call time, a factor that determines download capacity is more than the memory capacity installed in the terminal device. Rather, it is the transmission bit rate or talk time. At this time, by specifying the maximum time available for download from the terminal device in advance, the server device can determine a combination of information contents to be downloaded so that the download can be completed within a predetermined time.

Therefore, the present invention provides an information content download system for transmitting information from a server device to a terminal device, wherein attribute information, priority information, and / or priority information characterizing information content even under constraints such as memory capacity and communication time. Alternatively, it is an object of the present invention to provide an information content download system in which downloading of information content that does not benefit the user is suppressed by utilizing capacity information and the like, and the time required for download is reduced.

It is another object of the present invention to provide a server device, a server device program and a recording medium thereof, and a terminal device program and a storage medium thereof in such an information content download system.

[0013]

FIG. 1 is a diagram for explaining the operation of an information content download service according to the present invention. According to the information content download service of the present invention,
The information content can be referred to by attribute information, importance information, and capacity information representing the characteristics of the content of the information content.

The server device determines the transmission priority of the information content based on the attribute information and importance information specified by the terminal device and the memory capacity information of the terminal device (step 2), and sets the transmission priority to the transmission priority. Therefore, the information content is transmitted to the terminal device (step 3).

Further, the terminal device transmits the memory capacity information of the terminal device (step 1), and the server device transmits the information content to be transmitted to the terminal device based on the memory capacity information of the terminal device transmitted from the terminal device. Is determined (step 2), and a plurality of information contents are transmitted to the terminal device within a range not exceeding the total amount (step 3).

Alternatively, the terminal device specifies the communication allowable time information of the terminal device (step 1), and the server device should transmit the information to the terminal device based on the communication allowable time information of the terminal device specified by the terminal device. The total amount or communication time of the information contents is determined (step 2), and a plurality of information contents are transmitted to the terminal device within a range not exceeding the total amount or the communication time (step 3).

As described above, in the information content download system of the present invention, first, the terminal device obtains a plurality of pieces of attribute information associated with the download priority, the remaining capacity of the memory mounted on the terminal, and the terminal device. The server apparatus sends the remaining callable time and the like, and the server device selects information content to be sent based on the sent attribute information,
The download order of the information contents is ranked according to the priority order of the attribute information and the importance given to the information contents themselves on the server device side, and the download is sequentially performed.

Further, when the memory capacity of the terminal device is utilized to the utmost and the setting for requesting the download of a large number of contents is prioritized, the server device optimally selects the contents having a low priority order corresponding to the memory capacity. And can be downloaded sequentially.

Alternatively, when the terminal device sends the transfer speed information of the communication line and the remaining communication time in place of the remaining capacity of the memory, the server device sends the information within a predetermined time instead of the limitation of the memory capacity. Downloading can be performed sequentially with the possible information amount as an upper limit.

FIG. 2 is a diagram showing the principle of the present invention.

The invention according to claim 1 is an information content storage means 11 for storing information content and capacity information of the information content, and an information content distribution means 12.
And an at least one terminal device 2 having information content acquisition means 21 for acquiring information content corresponding to desired classification information from the server device 1. The terminal device 2 is an information content designating unit 2 for designating the classification information and the priority information of the information content to be downloaded from the server device 1 to the server device 1.
The server device 1 further includes: the classification information and the priority information designated by the terminal device 2;
It further comprises information content selection means 13 for selecting information contents to be distributed to the terminal device 2 in order of download based on information content capacity information downloadable by the terminal device 2 and information content capacity information. And

According to the second aspect of the present invention, the information content designating means 22 of the terminal device 2 stores the downloadable information content capacity information of the terminal device 2 in the information content selecting means of the server device 1. 1
3 and the information content selecting means 13 of the server device 1 executes the priority information so that the total of the capacity information of the distributed information content falls within the capacity designated by the downloadable information content capacity information. The information content is selected in the descending order of information content.

According to the third aspect of the present invention, the information content designating means 22 of the terminal device 2 stores the downloadable information content capacity information of the terminal device 2 in the information content selecting means of the server device 1. 13
And the information content selecting means 13 of the server device 1 determines that the priority information is within a predetermined priority range.
The information contents are selected in descending order of the priority information so that the total of the capacity information of the distributed information contents falls within the capacity designated by the downloadable information content capacity information, and the priority information is set to the predetermined priority. Is exceeded, the information contents are selected such that the total of the capacity information of the distributed information contents falls within the capacity designated by the downloadable information content capacity information.

According to the fourth aspect of the present invention, the information content specifying means 22 of the terminal device 2 transmits the downloadable time information of the terminal device 2 to the server device 1.
And the information content selecting means 13 of the server device 1 can download the total of the capacity information of the distributed information content within the time specified by the downloadable time information. It is characterized in that information contents are selected in descending order of priority information so as to fit in the capacity.

According to a fifth aspect of the present invention, there is provided a computer system, comprising: a function of designating, to the server device, classification information and priority information of desired information content to be downloaded from a server device storing and distributing the information content; And a function of acquiring information content corresponding to desired classification information from the server device.

According to a seventh aspect of the present invention, a computer
A function of storing information content, a function of distributing information content corresponding to desired classification information specified by the terminal device to the terminal device, and a classification information and priority information of the information content specified by the terminal device. A program for realizing an information content selection function of selecting information content to be distributed to the terminal device in a download order based on information content capacity information downloadable by the terminal device and capacity information of the information content. It is.

According to the eighth aspect of the present invention, the information content selection function is provided with a priority so that the total of the capacity information of the distributed information content falls within the capacity specified by the downloadable information content capacity information. It is characterized in that information contents are selected in descending order of degree information.

[0028] According to the ninth aspect of the present invention, the information content selection function may be arranged such that, when the priority information is within a predetermined priority range, the sum of the capacity information of the distributed information content is the downloadable information content. The information contents are selected in descending order of the priority information so as to be within the capacity specified by the capacity information, and when the priority information exceeds the predetermined priority range, the capacity information of the distributed information content is selected. The information content is selected so that the sum of the information contents falls within the capacity specified by the downloadable information content capacity information.

According to the tenth aspect of the present invention, the information content selecting function is arranged so that the total of the capacity information of the distributed information content falls within the downloadable capacity within the downloadable time specified by the terminal device. In addition, the information contents are selected in the descending order of the priority information.

According to the eleventh aspect, the information
The content selection function is an information con
And j as the request information requested by the terminal device.
Information content selected based on content priority
Number and ι_jIs assigned to the jth request information content
Priority and m_jIs the content of the jth request information content
Quantity and m_iIs the i-th information
Content capacity, i-th download usage
The likelihood of the information content is expressed as: d (0, j) = 1 d (i, j) = m_j/ Ι_j  And max () represent the operation of selecting the maximum value, i
= 0, and j is from 0 to J for d (i,
a second procedure for calculating j) and a recurrence formula when i is other than 0

[0031]

(Equation 7) According, a third step of calculating a cumulative value g (i, j), the current i as i _p, the cumulative amount of the information content in the information content cumulative amount determination area

[0032]

(Equation 8) A fourth step of calculating a for all j, when the M _j exceeds the downloadable volume M _max, i is the previous i _p -1,

[0033]

(Equation 9) A fifth procedure for determining j at which (M _max −M _j ) is a minimum with a positive value; and in the fifth procedure, a _{j at which} (M _max −M _j ) is a minimum with a positive value cannot be determined. And a sixth procedure for repeatedly executing the second and subsequent procedures with i = i + 1. In the fifth procedure, when j is determined,
About this time (i _p -1, j), the dynamic
Backtracking the programming path to determine information content to be downloaded.

According to a seventeenth aspect of the present invention, there is provided an information content storage means which can be referred to by using attribute information, importance information and capacity information representing characteristics of contents, attribute information and importance information designated by a terminal device. Server device having information content selection means for determining the transmission priority of information content based on memory capacity information of the terminal device, and information content distribution means for transmitting information content to the terminal device according to the transmission priority order It is.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An information content download system according to a first embodiment of the present invention will be described below with reference to FIGS.

FIG. 3 is a configuration diagram of an information content download system including a server device 1 and a terminal device 2 embodying the present invention. In FIG. 3, a server device 1 stores various information contents 4, and a terminal device 2
The terminal device is a terminal device that can receive (download) various information contents 2 from the server device 1 via the server 5, and has a memory 5 accommodated therein. For example, the terminal device 2 can be wired or wireless.
And the external device 7 are connected, and the contents of the memory 5 are transferred to the external device 7. Alternatively, the memory 5 may be a portable memory in which the memory 5 can be detached from the terminal device 2 and connected to the external device 7. The memory 5 can store and reproduce digital data, such as a static RAM, a magnetic tape, a magnetic disk, and a magneto-optical disk. The console 6 is a device that notifies the terminal device 2 of the attribute information required in the information content 2 from the user. External device 7
Is a device having a function of converting received information content into text, music, video, and the like and reproducing the converted content. However, this conversion / reproduction function can be built in the terminal device 2, and in that case, the external device 7 can be omitted.

FIG. 4 is an explanatory diagram of information contents according to the first embodiment of the present invention. As shown in FIG. 4, it is assumed that the information content 4 is characterized by various keywords and attribute information. The elementary items are, for example, an ID number unique to the content, a file name of the content, a media type and format such as music and video, a file size (capacity) expressed in bytes, a formal name of the content, a creator, and a performance. Attributes that characterize the content, such as a profile such as the name of the user, the country of production, the time of production, the revision history, keywords frequently appearing in the content, the genre of the content, and the number of downloads by other users. For these attributes, the user can classify the file format, genre and creator information, such as “trend novel”, “music classified as jazz”, and “video classified as animation”. And, for example, "content within a week of being made" or "movies made in the 1960s"
As described above, it is possible to specify a classification from the temporal aspect, and to narrow down the content to which the classification is applied on the server side.

The operation of the first embodiment of the present invention will be described below with reference to FIG.

Step 11: The user sends, from the console 6 to the terminal device 2, classification information of contents to be downloaded from the information contents, for example, “latest news”, “unread mail”, “tonight's TV program table”,
"New movie information" and "latest music hit chart" are described and stored. In addition, the user describes the priority of the information with respect to the classification information. FIG. 6 shows the first embodiment of the present invention.
9 is a diagrammatic example of priority and classification information described and stored by the embodiment of FIG. Such classification information is registered in the terminal device 2.

Step 12: After such classification information is registered, the terminal device 2 starts communication with the server device 1.

Step 13: When the communication is started and the communication with the server device 1 is permitted, the terminal device 2 stores the classification information of the information content to be obtained and the capacity information available for downloading the content in the memory 5. , To the server device 1.

Step 14: The server device 1 selects information contents to be transmitted in the current communication based on the received classification information, and sorts the information contents under the restriction of the capacity of the memory 5. Do.

At this time, the information content determined by the server apparatus 1 to have the highest priority, for example, guidance information such as service stoppage due to irregular maintenance and inspection of the server apparatus is the most important information related to the service itself. Regardless of the classification information shown in FIG.

Step 15: The server device 1 sequentially downloads the ordered information contents to the terminal device 2.

Step 16: server device 1 and terminal device 2
End communication between.

FIG. 7 shows a first embodiment of the present invention for selecting information contents according to the classification information and priority shown in FIG.
FIG. 6 is an explanatory diagram of an operation sequence according to the embodiment. "Priority of contents to be downloaded" in FIG.
Represents the same classification information as the classification information shown in FIG. It is assumed that the terminal device 2 has transmitted the “priority of contents to be downloaded” and the capacity of 320 kbytes of downloadable contents to the server device 1. It is also assumed that the server device 1 stores abundant information contents as shown in “Contents and Sizes Inside the Server” of FIG. 7 together with the capacity of the contents. At this time,
The server device 1 assembles the order of the information contents to be transmitted according to the “priority of the contents to be downloaded” transmitted from the terminal device 2 as shown in “downloaded contents” in FIG. Download to

FIG. 8 is an explanatory diagram of an operation sequence according to the second embodiment of the present invention. In the operation sequence according to the second embodiment of the present invention, the terminal device 2 starts communication, communication with the server device 1 is permitted, and the terminal device 2
The operation sequence according to the first embodiment of the present invention shown in FIG.

The “priority of contents to be downloaded” in FIG. 8 is classification information that is ranked in the same manner as the “priority of contents to be downloaded” in FIG. For contents having lower priorities than the indicated fixed threshold, the information to be downloaded is rearranged with emphasis on content capacity rather than priorities. That is, the server device 1
Takes into account the criterion of storing as much information content as possible in the memory 5 of the terminal device 2 in order to maximize the capacity of the memory 5 of the terminal device 2 and to sacrifice the priority of the attribute information to some extent. To order the information content. For example, in the example of FIG. 8, for the content having the fourth or higher priority, the capacity of the content is prioritized instead of prioritization. An example in which the server device 1 sorts and downloads information contents based on the table of “priorities of contents to be downloaded” in FIG. 8 is shown in “downloaded contents” in FIG. In this example, unlike the example shown in FIG. 7, since as many contents as possible are selected with the specified memory capacity, even if the priority is higher, such as the information content of priority 4, the capacity is higher. A large information content is not selected as a download target, and an information content having a low priority and a small capacity even with a low priority is selected as a download target.

Various methods can be considered as a method for realizing such selection of information contents.
FIG. 11 is an explanatory diagram of an information content selection algorithm according to a second embodiment of the present invention, which is one of the methods. This algorithm employs a dynamic programming (DP) matching technique based on dynamic programming.

According to this method, the user arranges the contents requested to be downloaded by the vertical axis on the vertical axis, sets the number of contents to be downloaded on the horizontal axis, and calculates the likelihood of the content download by the priority and the content. It is assumed as in the following equation (2) including the capacity. That is, the number of information content to be downloaded to i, and the number of information contents selected based on the priority of the request information content requested to j from the terminal apparatus, the priority granted to iota _j to j-th request information content and, the m _j to a volume of the j-th request information content, when expressed in a volume of information content determined in download m _i to i-th, the likelihood of the information content to be downloaded using the i-th, d (0 , J) = 1 d (i, j) = m _j / ι _j (1)

The recurrence formula between the priorities of contents is defined as shown in FIG. 9A, and the condition for terminating the calculation is such that the accumulated value of the contents closest to the maximum of the memory capacity is obtained. If so, the content selected from the likelihood equation draws a path as shown in FIG. 9B on the stochastic. By backtracking this path, the ordering of the downloadable content is obtained.

This algorithm has a first procedure for i = 0, a second procedure for calculating j (0, J) for d (i, j), and a recurrence formula when i is other than 0.

[0053]

(Equation 10) According, a third step of calculating a cumulative value g (i, j), the current i as i _p, the cumulative amount of the information content in the information content cumulative amount determination area

[0054]

[Equation 11] A fourth step of calculating a for all j, when the M _j exceeds the downloadable volume M _max, i is the previous i _p -1,

[0055]

(Equation 12) A fifth procedure for determining j at which (M _max −M _j ) is a minimum with a positive value; and in the fifth procedure, a _{j at which} (M _max −M _j ) is a minimum with a positive value cannot be determined. And a sixth procedure for repeatedly executing the second and subsequent procedures with i = i + 1. In the fifth procedure, when j is determined,
About this time (i _p -1, j), the dynamic
Backtracking the programming path to determine information content to be downloaded.

When the combination of contents is obtained as described above, the ordered contents are transmitted from the server device 1 to the terminal device 2 as in the first embodiment, and the communication is terminated.

Although the information content selection algorithm according to the second embodiment of the present invention employs a DP (dynamic programming) matching method, a specific calculation including the above recurrence formula (2) is performed. The algorithm is
It is to be noted that this is merely an example of the DP matching technique, and the present invention is not limited by a specific calculation algorithm, and various other calculation algorithms are included in the scope of the present invention.

FIG. 10 is an explanatory diagram of an operation sequence according to the third embodiment of the present invention. In the operation sequence according to the third embodiment of the present invention, the terminal device 2 is capable of making the classification information, the average communication speed (bit rate) information between the server device 1 and the terminal device 2, and the terminal device 2 being able to talk. The second embodiment is different from the first and second embodiments of the present invention in which the classification information and the downloadable content capacity are transmitted in that the remaining time information indicating the appropriate time is transmitted to the server device 1.
In this example, the communication speed information is transmitted from the terminal device 2 to the server device 1. However, if the server device 1 can detect the communication speed information by its own communication function, The transmission from the terminal device 2 to the server device 1 does not have to be performed.

For example, the terminal device 2 operates for three minutes (1
If the communication can be permitted only for 80 seconds), the terminal device 2
Since the elapsed time from the start of the call to the server device 1 can be measured using the built-in timer, the elapsed time is measured for 3 minutes (18 minutes).
By subtracting from the value (0 seconds), the remaining communication allowable time can be notified to the server device 1.

The server device 1 calculates the “downloadable time” by subtracting the loss time required for the processing from the notified allowable communication time, and multiplies the current bit rate by the “downloadable time”. The maximum capacity size of the downloadable content, that is, the capacity of the downloadable content is calculated. Accordingly, the server apparatus 1 can determine whether the “priority of contents to be downloaded” specified by the terminal apparatus 2 and the calculated capacity of downloadable contents are described in the first embodiment or the second embodiment. By applying the method we chose, we chose "downloadable content"
Can be ordered.

In the example shown in FIG. 10, the server 1
Is a link establishment communication speed of 50 kbp with the terminal device 2.
s and obtain the “priority of the content to be downloaded” and the allowable communication time of 180 seconds from the terminal device 2, calculate the downloadable content capacity 1106 kbytes in consideration of the loss time of 3 seconds,
As a result, the selected and ordered information content is shown in “Downloadable Content”.

The server device 1 sends out “downloadable information contents” to the terminal device 2 and ends the communication.

If during the download, for example,
If communication is hindered, or if all data scheduled within a predetermined time cannot be downloaded due to insufficient capacity of the memory 5 of the terminal device 2, the terminal device 2 issues an instruction from a built-in timer. May be configured to disconnect the communication. In this case, in the terminal device 2, only the content downloaded within a predetermined time is treated as valid data.

In the third embodiment, the downloadable time is calculated by subtracting the loss time from the communication allowable time, and the maximum downloadable content capacity is calculated from the downloadable time and the average communication speed. Is performed by the server device 1. On the other hand, the terminal device 2 performs all of these processes, and determines the maximum capacity of the obtained downloadable content according to the first embodiment and the second embodiment.
It is also possible to send the “capacity of downloadable content” to the server device 1 in the embodiment.

Although the representative embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications and applications are possible within the scope of the claims.

[0066]

As described above, according to the present invention,
In an information download service that downloads information content from a server device capable of distributing a plurality of information contents to at least one terminal device and allows the user to use the information content, the terminal device side needs to have a memory capacity capable of storing the information content. When there is a restriction, the information content is downloaded based on the priority determined in advance by the terminal device, so that the download of the information content not required by the user can be restricted in advance. The information determined to have a higher priority by the terminal device can be downloaded with a higher priority than the priority of the information content determined by the terminal device. Further, according to the present invention, the information content can be downloaded according to the size of the information content so that as much information content as possible is stored in the memory within the range of the memory capacity designated by the terminal device. It works. Further, the present invention has an effect that the content can be downloaded according to the size of the content so that a large number of contents can be entered within the communicable time designated by the terminal device.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the operation of an information content download system according to the present invention.

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

FIG. 3 is a configuration diagram of an information content download system according to a first embodiment of the present invention.

FIG. 4 is an explanatory diagram of an example of information content according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of an operation according to the first example of the present invention.

FIG. 6 is an explanatory diagram of an example of priority order and classification information of information contents according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram of an operation sequence according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram of an operation sequence according to a second embodiment of the present invention.

FIG. 9 is an explanatory diagram of an information content selection algorithm according to a second embodiment of the present invention.

FIG. 10 is an explanatory diagram of an operation sequence according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Server device 11 Information content storage means 12 Information content distribution means 13 Information content selection means 2 Terminal device 21 Information content acquisition means 22 Information content designation means

 ──────────────────────────────────────────────────続 き Continued on front page F-term (reference) 5B082 CA04 EA07 HA05 HA08 5B085 BG07 CA04

Claims (19)

[Claims] 1. A server device having information content storage means for storing information content and capacity information of the information content, and a server device having information content distribution means, and information for obtaining information content corresponding to desired classification information from the server device. An information content download system including at least one terminal device having content acquisition means, wherein the terminal device specifies classification information and priority information of information content to be downloaded from the server device to the server device. The server device further includes information content designation means, wherein the server device has the classification information and the priority information designated by the terminal device, downloadable information content capacity information of the terminal device, and information content capacity information. Distributed to the terminal device based on An information content download system further comprising information content selection means for selecting information content in the order of download. 2. The information content designating means of the terminal device notifies the downloadable information content capacity information of the terminal device to the information content selecting means of the server device, and the information content selecting device of the server device. 2. The information according to claim 1, wherein the means selects the information contents in descending order of the priority information such that the total of the capacity information of the distributed information contents falls within the capacity designated by the downloadable information content capacity information. Content download system. 3. The information content designating means of the terminal device notifies the downloadable information content capacity information of the terminal device to the information content selecting device of the server device, and the information content selection device of the server device. Means are such that when the priority information is within a range of a predetermined priority, the sum of the capacity information of the distributed information contents falls within the capacity specified by the downloadable information content capacity information. The information contents are selected in order, and when the priority information exceeds the above-mentioned predetermined priority range, the total of the capacity information of the distributed information contents becomes the capacity specified by the downloadable information content capacity information. The information content download system according to claim 1, wherein the information content is selected so as to fit. 4. The information content designating means of the terminal device notifies downloadable time information of the terminal device to the information content selecting device of the server device, and the information content selecting device of the server device, The information according to claim 1, wherein the information contents are selected in descending order of the priority information such that the total of the capacity information of the distributed information contents falls within the downloadable capacity within the time specified by the downloadable time information. Content download system. 5. A function of designating, to the computer, classification information and priority information of desired information content to be downloaded from a server device storing and distributing information content to the computer; A program for realizing the function of acquiring the corresponding information content. 6. A function for designating, to the computer, classification information and priority information of a desired information content to be downloaded from a server device storing and distributing the information content to the computer; A computer-readable recording medium on which a program for realizing a function of acquiring a corresponding information content is recorded. 7. A function of storing information contents in a computer, a function of distributing information contents corresponding to desired classification information specified by a terminal device to the terminal device, and a function of storing the classification information specified by the terminal device. And an information content selection function for selecting information contents to be distributed to the terminal device in the order of download based on priority information of the information content, downloadable information content information of the terminal device, and information content capacity information. And a program to realize. 8. The information content selection function is to sort the information contents in descending order of the priority information so that the total capacity information of the distributed information contents falls within the capacity designated by the downloadable information content capacity information. The program according to claim 7, which is selected. 9. The information content selection function according to claim 1, wherein when the priority information is within a predetermined priority range, a total of the capacity information of the distributed information content is reduced to a capacity designated by said downloadable information content capacity information. To fit
The information contents are selected in the descending order of the priority information, and when the priority information exceeds the above-mentioned predetermined priority range, the total of the capacity information of the distributed information contents is determined by the downloadable information content capacity information. The program according to claim 7, wherein the information content is selected so as to fit in a designated capacity. 10. The information content selection function is performed in descending order of the priority information so that the total of the capacity information of the distributed information content falls within the downloadable capacity within the downloadable time specified by the terminal device. The program according to claim 7, wherein the information content is selected. 11. The information content selection function includes: i is the number of information contents to be downloaded; and j is the priority of the requested information content requested by the terminal device.
The number of information contents selected based on the ranking, ι_jIs the priority assigned to the jth request information content
And m_jIs the capacity of the jth requested information content, and m_iInformation content for which i-th download was determined
And the likelihood of the ith information content to be used for download
D (0, j) = 1 d (i, j) = m_j/ Ι_j  Where max () represents the operation of selecting the maximum value, a first procedure in which i = 0, and a second procedure in which j is calculated from 0 to J for d (i, j).
And when i is other than 0, the recurrence equationThird procedure for calculating the cumulative value g (i, j) according to
And the current i to i_pAs the information content cumulative amount determination area
Cumulative amount of information content inAnd a fourth procedure for calculating_jDownloadable capacity M
_maxExceeds i, the previous i_pFor −1,(M_max−M_j) Is a positive value and determines the minimum j
In the fifth procedure and the fifth procedure, (M_max−M_j) Is positive and minimized
When j cannot be determined, a sixth procedure of repeatedly executing the processing of the second and subsequent procedures with i = i + 1
In the fifth procedure, when j is determined,
(I_p-1, j), the dynamic program
Backtracking path to download
11. The program according to claim 10, wherein the information content is determined.
Ram. 12. A function of storing information content in a computer, a function of distributing information content corresponding to desired classification information specified by a terminal device to the terminal device, and a function of storing the classification information specified by the terminal device. And an information content selection function for selecting information contents to be distributed to the terminal device in the order of download based on priority information of the information content, downloadable information content information of the terminal device, and information content capacity information. And a computer-readable recording medium on which a program for realizing the above is recorded. 13. The information content selection function according to claim 1, wherein the information contents are distributed in descending order of priority information so that the total of the capacity information of the distributed information contents falls within the capacity designated by the downloadable information content capacity information. 13. A computer-readable recording medium on which the program according to claim 12 is recorded for selection. 14. The information content selection function according to claim 1, wherein when the priority information is within a predetermined priority range, the total of the capacity information of the distributed information content is reduced to the capacity designated by said downloadable information content capacity information. The information contents are selected in descending order of the priority information so as to be included, and when the priority information exceeds the predetermined priority range, the total of the capacity information of the distributed information contents is calculated as the downloadable information. 13. A computer-readable recording medium recording the program according to claim 12, wherein the information content is selected so as to fit in the capacity specified by the content capacity information. 15. The information content selection function is performed in descending order of the priority information so that the total of the capacity information of the distributed information content falls within the downloadable capacity within the downloadable time specified by the terminal device. A computer-readable recording medium on which the program according to claim 12 is recorded for selecting information contents. 16. The information content selection function includes: i is the number of information contents to be downloaded; and j is the priority of the requested information content requested from the terminal device.
The number of information contents selected based on the ranking, ι_jIs the priority assigned to the jth request information content
And m_jIs the capacity of the jth requested information content, and m_iInformation content for which i-th download was determined
And the likelihood of the ith information content to be used for download
And d (0, j) = 1 d (i, j) = m_j/ Ι_j  Where max () represents the operation of selecting the maximum value, a first procedure in which i = 0, and a second procedure in which j is calculated from 0 to J for d (i, j).
And when i is other than 0, the recurrence equationThird procedure for calculating the cumulative value g (i, j) according to
And the current i to i_pAs the information content cumulative amount determination area
Cumulative amount of information content inAnd a fourth procedure for calculating_jDownloadable capacity M
_maxExceeds i, the previous i_pFor −1,(M_max−M_j) Is a positive value and determines the minimum j
In the fifth procedure and the fifth procedure, (M_max−M_j) Is positive and minimized
When j cannot be determined, a sixth procedure of repeatedly executing the processing of the second and subsequent procedures with i = i + 1
In the fifth procedure, when j is determined,
(I_p-1, j), the dynamic program
Backtracking path to download
The program according to claim 15, wherein the information content is determined.
A computer-readable recording medium that records a ram. 17. An information content storage means which can be referred to by attribute information, importance information, and capacity information representing characteristics of contents, attribute information and importance information designated by a terminal device, and a memory capacity of the terminal device A server device comprising: an information content selection unit that determines transmission priority of information content based on information; and an information content distribution unit that transmits information content to a terminal device according to the transmission priority. 18. The information content selecting means determines a total amount of information content to be transmitted to the terminal device based on the memory capacity information of the terminal device transmitted from the terminal device, and determines a plurality of information contents within a range not exceeding the total amount. 18. The server device according to claim 17, which determines a transmission priority of the information content. 19. The information content selecting means determines a total amount or a communication time of information contents to be transmitted to the terminal device based on communication allowable time information of the terminal device designated by the terminal device. 18. The server device according to claim 17, wherein a transmission priority order of a plurality of information contents is determined within a range that does not exceed.