JPH0954730A - Multimedia system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide multimedia data to user fairly corresponding to data transfer capacity between a server and a terminal or information storage capacity in the terminal. SOLUTION: A server device 1 stores all the multimedia information. Terminal equipment 3 which provides the multimedia information to the user by a display device 10 is connected to the server device 1 via a transmission line 2. The terminal equipment 3 is provided with a means 4 which stores a part of the multimedia information sent from the server device 1, a means 5 which stores the speed of the transmission line 2 and the control data of memory capacity, etc., of the means 4, a means 6 which decides the kind of a display medium with the control data, a means 7 which acquires data from the server 2 and copies it on the means 4, a means 8 which sets the alternate data of data whose display is disabled, and a means 9 which controls the input/output of the data between the display device 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for storing and retrieving multimedia information, and more particularly, between a server device that produces and stores multimedia information and a terminal device that uses the multimedia information. Relates to a multimedia system connected by a transmission line.

[0002]

2. Description of the Related Art In conventional multimedia, the maximum information processing amount required for transferred multimedia information is estimated in advance, and the necessary transmission line, terminal device and server device configurations are determined and determined in advance. The system was designed to be able to use multimedia information only with the specified system configuration. As another method, as is seen in World Wide Web (WWW) on the Internet, which provides hypertext services to an unspecified number of users, etc., the capacity of the transmission line has been ignored and the system has been constructed. Therefore, when the speed of the transmission line is insufficient for the information of the multimedia information to be handled, an excessive waiting time is required.

[0003]

As described above, in the conventional multimedia system, when the information is retrieved under the environment different from the speed of the transmission line set in advance and the processing capacity of the server and the terminal device, If the retrieved information is larger than the processing capacity, an excessive waiting time is required, and if the retrieved information is smaller than the processing capacity, the system idle time becomes large. There was a problem of poor flexibility.

On the other hand, high-speed responsiveness is obtained by copying and holding information that has been used once on the terminal device side, and using the held information for the second and subsequent data access. There is a technique called a cache system that attempts to secure data, but in multimedia information, for example, for moving images and character data, the required amount of data is 1000.
Since it is not uncommon for the data to differ more than twice, if the data is uniformly copied, the storage device on the terminal side is occupied by only one moving image data, for example, and the effect of improving responsiveness is lost. .

An object of the present invention is to provide a multimedia system capable of fairly utilizing multimedia information according to the information transmission capacity between the server device and the terminal device and the amount of information that can be stored in the terminal device. To do.

Another object of the present invention is to automatically rearrange the data of the server device and the terminal device according to the capability of the terminal device even when the multimedia data in the server device is added. It is to provide a multimedia system capable of performing.

[0007]

SUMMARY OF THE INVENTION According to the present invention, information about a media that can be provided is determined according to the capability of a terminal device and the data transfer capability between a server and a terminal device, and the information that can be provided is transferred when necessary. In order to determine the possible information and the information of the media that needs to be stored in the terminal device and automatically transfer the necessary information to the terminal device in advance,
A means for estimating the amount of information required to display each medium from the type of each medium forming the multimedia data in the terminal device, and calculating the processing capacity required to display each medium, A method for selecting a displayable medium according to a pre-stored rule from the value of the information processing capacity of the transmission line stored in the terminal and the value of the information storage capacity stored in the terminal, and the displayable Whether the transmission processing of the display data is completed within a predetermined time from the value of the processing capacity and the value of the information transmission capacity required to display the information for each medium. A means for calculating and determining whether the display information is copied and stored from the server device or transmitted as needed, and a method of determining the data type when the user requests display of information that cannot be displayed. And a means for replacing the information that can not be displayed from, characterized in that to be able to provide multimedia data suitable for the ability of the terminal apparatus and the transmission line to the user.

Further, according to the present invention, when the data in the server device is added, the storage amount of the multimedia data in the terminal device does not exceed the storage amount of the storage device. In order to always properly distribute multimedia data, means for measuring the data amount of each media in the server device and the data amount of each media and each predetermined media Means for generating a threshold value for determining whether or not the data of each medium can be stored in the terminal device from the data processing amount necessary for displaying and the measured data amount of each medium, As the data is added from the server device to the terminal device, a means for setting the distribution of multimedia data is provided so that the multimedia data can be changed between the server device and the terminal device. If, automatically media type or usable, by automatically changing the type of media to create duplicated data into the terminal, to the user,
It is characterized in that multimedia data suitable for the amount of data in the server device and the capabilities of the terminal device and the transmission line can be provided.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

<Embodiment 1> FIG. 1 shows a system configuration of a first embodiment of the present invention. In FIG. 1, the server device 1
And the terminal device 3 are connected via the transmission line 2. Here, the server device 1 stores all multimedia information. The terminal device 3 for the user to see the information is
An actual data storage unit 4 for storing a part of the multimedia information sent from the server device 1, and control data for storing control information such as the transmission capacity of the transmission line 2 and the storage capacity of the actual data storage unit 4. A storage unit 5; a display medium selection unit 6 that determines the type of medium to be displayed from the control data storage unit 5 based on values such as the speed value of the transmission line 2 and the storage capacity of the actual data storage unit 4; Transmission storage for determining whether the data of the medium to be displayed in the display medium selection unit 6 is accessed by accessing the server device 2 as necessary or copied to the actual data storage unit 4 in advance The determination unit 7, the alternative information setting unit 8 for outputting a message or the like indicating that data cannot be displayed due to insufficient processing capacity, and a search request from the user Only to perform a data request to the transmission storage determining unit 7 consists of the input-output control unit 9 for outputting a result. The display device 10 presents multimedia information to the user via the input / output control unit 9. The configuration in which the terminal device 3 and the display device 10 are combined may be called a terminal device.

FIG. 2 shows an example of the structure of the attribute information of the actual data in the actual data storage unit 4. Here, at least the identifier of the information decomposed for each medium and the type of the medium (still image, moving image, character, etc.). ) And display / non-display data indicating whether or not to display, and when the actual data is copied, reference data (pointer) to the copied actual data or the actual data being stored. I am trying.

FIG. 3 shows an example of the structure of the control data in the control data storage unit 5. Here, at least the maximum storage capacity of the actual data storage unit 4, the data transmission capacity of the transmission line 2,
It has a value of the amount of data processing with respect to the type of media expressing the information.

In the system of this embodiment, FIG. 4 shows the first setting request for use by the user, the change of data in the server, the change of the configuration of the transmission line 2 and the terminal 3, and the like. 6 is a flowchart showing a process for setting a value or the like in the actual data storage unit 4 or the control data storage unit 5 in response to a request.

In FIG. 4, in step 11, the transmission / storage determination unit 7 receives a setting request from the user,
It requests the server device 1 for the attribute information of the stored data. In step 12, the transmission storage determination unit 7 stores the attribute information of the multimedia information sent from the server device 1 in the actual data storage unit 4.

Next, in the display medium selection unit 6, in step 13, the maximum storage amount of actual data, the data transfer capacity, and the processing amount required for each moving image medium are retrieved from the control data storage unit 5, and in step 13- 1 to 13-4 are executed. In step 13-1, the value of the maximum storage amount of actual data is divided by the value of the processing amount for each medium, and in 13-2, it is compared with a threshold value determined in advance for each medium
If greater than or equal to the threshold, step 13
At -3, "1" is added to the buffer A in the display media selection section 6.
Is written, and if smaller, "0" is written in the buffer A in step 13-4. Subsequently, in the display medium selection unit 6, in step 14-1, the value of the data transfer capability is divided by the value of the processing amount of each medium, and the step 14-
In step 2, it is compared with a predetermined threshold value for each medium, and if it is larger than or equal to the predetermined threshold value, it is stored in the buffer B in the display medium selection section 6 in step 14-3. "1" is written, and if smaller, "0" is written in the buffer B in step 14-4. After that, in the display medium selection unit 6, the values of the buffers A and B are checked for each medium in step 15-1, and if both are “0” for each medium, the alternative information is set in step 15-2. Part 8
The type of the medium is written in the inner buffer, and regarding the medium whose value is “1” in the buffer B, as the information that cannot be copied, the corresponding medium type is written in the buffer in the transmission storage determination unit 7 in step 15-3. Write. The other cases are cases where the actual data of the medium needs to be copied in order to display.

Here, an example of calculation in the display medium selection unit 6 will be shown. For example, the value of the maximum storage amount of actual data in the actual data storage unit 4 is 20 MBytes, and the moving image is 200 times per second.
If you need the amount of KBytes data processing, 20MB
Dividing ytes by 200 KBytes gives 100. If the threshold value is 1000, it is smaller than the threshold value, so “0” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 8 KBytes per second, it becomes 0.04 when divided by 200 KBytes of the moving image. If the threshold value given in advance is 1.5,
Since it is smaller than the threshold value, “0” is stored in the buffer B. As a result, in step 15-1, it is determined that the moving image cannot be displayed.

100K per second for processing still images
If the amount of data processing of Bytes is necessary, 20MByt
If es is divided by 100 KBytes, it becomes 200. If the threshold value is 100, it is larger than the threshold value.
“1” is stored in the buffer A. If the data transfer rate of the transmission line 2 is 8 KBytes per second, it will be 0.08 when divided by 100 KBytes of the still image. If the threshold value given in advance is 1.5, it is smaller than the threshold value, and thus "0" is stored in the buffer B. As a result, in step 15-1, it is determined that it is necessary to copy the actual data from the server device in order to display the still image.

Similarly, if processing a character data requires a data processing amount of 2 KBytes per second, then 2
Dividing 0MBytes by 2KBytes gives 10,000. If the threshold value is 100, since it is larger than the threshold value, “1” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 8 KBytes per second, it becomes 4.0 when divided by 2 KBytes of the character data. If the threshold value given in advance is 1.5, it is larger than the threshold value, so "1" is the buffer B.
Stored in. As a result, in step 15-1,
In order to display the character data, it is determined that the character data is transferred from the server device 1 via the transmission line 2 whenever necessary.

Returning to FIG. 4, in the next step 16, the alternative information setting unit 8 sets a display / non-display flag for each multimedia information in the actual data storage unit 4 that matches the type of media that cannot be displayed. It is hidden and the pointer to the non-display data for each medium stored in advance in the actual data storage unit 4 is stored in the pointer column for the actual data. Also, the display / non-display flag of each information other than the information of the media that cannot be displayed is displayed.

Next, at step 17, the transmission / storage determination unit 1
7, the pointer column to the actual data in the actual data storage unit 4 is set to 0 for the information of the type of medium that cannot be copied.
To Furthermore, in the transmission path storage determination unit 7, step 1
In step 8, for each data in the real data storage unit 4, the display / non-display flag is displayed and the pointer column to the real data is not 0 The actual data is copied to the data storage unit 4, and the pointer to the actual data is written in the pointer column of the actual data.

As a result, by using the transmission line and the storage device in the terminal together between the server device 1 and the terminal device 3, the users can fairly share the capacity corresponding to the transmission line 2 and the terminal 3. Media information available.

When the storage device of the actual data storage unit 4 is additionally installed, the value of the maximum storage amount of the actual data in the control data storage unit 5 is changed and a setting request is made. Make selections and judge whether actual data needs to be copied,
Achieve optimal data arrangement for presenting multimedia information. The process of this resetting process is the same as steps 11 to 19 in FIG. 4, and since it can be easily analogized, it is omitted.

Here, an example of calculation in the display medium selection unit 6 when the storage amount is changed will be shown. For example, if the actual data storage unit 4 is changed to a storage device having a capacity of 2 GBBytes, and the value of the maximum actual data storage capacity is 2 GBBytes, and the moving image requires a data processing capacity of 200 KBBytes per second, then 2 GBBytes is required. Is divided by 200KBytes, 10,
000. If the threshold is 1000,
Since it is larger than the threshold value, “1” is stored in the buffer A. In addition, the data transfer rate of the transmission line 2 is 8 per second.
If it is KBytes, if it is divided by 200KBytes of the moving image,
0.04. The threshold value given in advance is 1.
If it is 5, since it is smaller than the threshold value,
“0” is stored in the buffer B. As a result, in step 15-1, it is determined that it is necessary to copy the actual data from the server device in order to display the moving image.

100K per second for processing still images
If the data processing amount of Bytes is necessary, 2GB Bytes
Divided by 100 KBytes gives 20,000. If the threshold value is 100, which is larger than the threshold value, “1” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 8 KBytes per second, it will be 0.08 when divided by 100 KBytes of the still image. If the threshold value given in advance is 1.5, it is smaller than the threshold value, and thus "0" is stored in the buffer B. As a result, in step 15-1, it is determined that the actual data needs to be copied from the server device 1 in order to display the still image.

Similarly, if processing of character data requires a data processing amount of 2 KBytes per second, 2
Dividing GBytes by 2KBytes gives 1,000,000. If the threshold value is 100, since it is larger than the threshold value, “1” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 8 KBytes per second, it becomes 4.0 when divided by 2 KBytes of the character data. If the threshold value given in advance is 1.5, it is larger than the threshold value, so "1" is the buffer B.
Stored in. As a result, in step 15-1,
In order to display the character data, it is determined that the character data is transferred from the server device via the transfer device whenever necessary.

Further, when the transfer capacity of the transmission line 2 is increased, it is possible to automatically select the display data by changing the value of the data transfer capacity in the control data storage unit 5 and making a setting request. , The actual data layout is determined, and the optimal data arrangement for presenting multimedia information is realized. The process of this resetting is also performed in step 11 of FIG.
To 19 and can be easily analogized, and therefore omitted.

As a concrete calculation example of the processing, it is assumed that the transmission line 2 is changed to a line having a data transfer capacity of 192 KBytes. The value of maximum storage amount of actual data is 2GByt
In es, if a moving image requires a data processing amount of 200 KBytes per second, 2 GBBytes divided by 200 KBytes gives 10,000. If the threshold value is 1000, it is larger than the threshold value, so “1” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 192 KBytes per second, 200 K of moving images
When divided by Bytes, it becomes 0.96. If the threshold value given in advance is 1.5, it is smaller than the threshold value, and thus "0" is stored in the buffer B. As a result, in step 15-1, it is determined that the actual data needs to be copied from the server device 1 in order to display the moving image.

100K per second for processing still images
If the data processing amount of Bytes is necessary, 2GB Bytes
Divided by 100 KBytes gives 20,000. If the threshold value is 100, since it is larger than the threshold value, “1” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 192 KBytes per second, it becomes 1.9 when divided by 100 KBytes of the still image. If the threshold value given in advance is 1.5, it is larger than the threshold value, so "1" is the buffer B.
Stored in. Therefore, in step 15-1, it is determined that the still image may be transferred from the server device 1 via the transmission line 2 each time it is necessary to display the still image.

Similarly, if processing of character data requires a data processing amount of 2 KBytes per second, 2
Dividing GBytes by 2KBytes gives 1,000,000. If the threshold value is 100, since it is larger than the threshold value, “1” is stored in the buffer A. Further, if the data transfer amount of the transmission line 2 is 8 KBytes per second, it becomes 4.0 when divided by 2 KBytes of the character data. If the threshold value given in advance is 1.5, it is larger than the threshold value, so "1" is the buffer B.
Stored in. As a result, in step 15-1,
In order to display the character data, it is determined that the character data may be transferred from the server device 1 via the transmission line 2 again whenever necessary.

FIG. 5 shows a processing flowchart in response to a user's search request in this embodiment.

In FIG. 5, in step 21, the input / output control unit 9 receives the search request from the user and sends the identifier for the multimedia information to the transmission / storage determination unit 7. For example, when the identifier 1002 of FIG. 2 is obtained by the search request from the user, the value of this identifier is sent to the transmission path storage determination unit 7. In step 22, in the transmission path storage determination 7, the value of this identifier is used to search the attribute information of the multimedia information in the actual data storage unit 4. For example, if the given identifier is 1002, then FIG.
The data (moving image) having the identifier 1002 is searched.

Next, at step 23, the transmission / storage transmission unit 7 refers to the pointer to the actual data in the attribute information of the obtained multimedia information and determines whether the value is equal to "0". judge. When the value is equal to “0”, the identifier is sent to the server device 1 to request the data in step 24, and the data obtained from the server device 1 is sent to the input / output control unit 9 in step 25. If the value of the pointer to the actual data is not 0 in step 23,
In step 26, the data in the actual data storage unit 4 is acquired by the pointer to the actual data and sent to the input / output control unit 9. In step 27, the display data is sent from the input / output control unit 9 to the display device 10, displayed on the display device 10 and provided to the user. For example, in FIG. 2, the identifier 100
In the case of the data of 2, since the pointer to the moving image message data "The moving image cannot be displayed" is stored, this moving image message data is sent to the input / output control unit 9 and displayed on the display device 10. It will be.

<Second Embodiment> The multimedia information stored in the server device is not always the same, and addition,
Updates and deletions are sometimes done on a daily basis.
As a result, for example, if data is added to the server device at any time, in order to access all the data in the server device, it is necessary to cause the terminal side to make a setting request when adding the data. Become. However, if the terminal side is simply reset, there is a fear that the capacity of the terminal side storage device will be exceeded.

Therefore, as a second embodiment of the present invention, as shown in FIG. 6, on the server device 1 side, a data amount management unit 3 for managing the amount of data stored for each type of media.
1, a threshold value calculation unit 32 that calculates whether or not data can be stored on the terminal device from the amount of data in the storage device in the server device 1, and a threshold value that the terminal device 3 transmits. The terminal device activation unit 33, which sends the setting request to the storage determination unit 7, and causes the transmission storage determination unit 7 to make a setting request, and transfers the actual data of multimedia information at the time of setting the terminal device or in response to a request from the user. A data transfer unit 34 and a control data storage unit 35 for holding the storage amount of the storage device required for threshold calculation and the like are provided. Reference numeral 36 is an actual data storage unit for storing all multimedia information on the server device 1 side.

FIG. 7 shows the actual data storage unit 36 in FIG.
Shows an example of the structure of the real data attribute information in the above, and is composed of at least the identifier of the information decomposed for each medium, the type of the medium, and the data (pointer) for referring to the real data in the real data storage .

FIG. 8 shows the control data storage unit 3 in FIG.
In the configuration example of FIG. 5, at least the maximum storage amount of the actual data storage unit 36, the currently used data amount, and the value of the data processing amount for the type of medium expressing the information are held.

In the present embodiment, an example of a case where new data is stored in the actual data storage unit 36 of the server device 1 will be described with reference to the flowchart of FIG.

When new data is stored on the server device 1 side and it becomes necessary to update the data in the actual data storage unit 4 in the terminal device 3, the user transmits and stores the setting request on the terminal device 3 side. By performing the determination unit 7, step 4
In 1, the transmission / storage determination unit 7 requests the terminal device activation unit 33 in the server device 1 for threshold data for controlling the terminal device.

On the server device 1 side, in step 42, the terminal device activation unit 33 makes a threshold value calculation request to the threshold value calculation unit 32 that calculates the threshold value, and in response to this, From the threshold value calculation unit 32 to the data amount management unit 3
The data required for calculation is requested to 1. In step 43, the data amount management unit 31 controls the control data storage unit 35.
The amount of data used as a unit for each medium is calculated from the value of the current usage amount in the medium and the value of the number of data required as a unit for transmitting information for each medium, and then step 44
Then, the estimated amount of data for each medium is calculated from the amount of data as a unit for each medium and the value of the maximum storage capacity of the actual data storage unit 36, and the value of the amount of data for each medium is calculated as a threshold value. Send to section 32.

As an example of the processing of steps 43 and 44, in order to transmit one piece of information, for example, in case of a moving image, from a predetermined amount of information required to transmit information of each medium, It takes about 30 seconds, and if one piece of information is required for a still image and about 400 characters for a character, one unit of information when using each media For example, in the case of a moving image, the size of is multiplied by 200 KBytes / sec, which is the value of the moving image processing amount of the control data storage unit 35 shown in FIG.
In the case of KBytes, still images, for example, one unit constitutes one unit of information, so 100KBytes x 1 gives 100KBytes, and in the case of audio, 8KBytes / sec multiplied by 15 seconds to 120KBy
For tes and letters, one letter is 2 as in Japanese.
2 if you are targeting something expressed in Bytes
Bytes × 400 = 800 Bytes.

As an example of the value of the amount of information as a unit,
15 seconds or 30 seconds for video, 15 seconds or 3 for audio
0 seconds, one still image, character string 400 characters or 10
00 characters. These values may take different values depending on the type of data handled by the system. As the processing amount of information regarding each character for each medium, a data amount indicating one character may be used.

If these pieces of information are uniformly stored in the actual data storage unit 36 as information for each unit,
For example, if the current usage amount of the actual data storage unit 36 is 400 MBytes as shown in FIG.
Bytes × 400MBytes / Σ (6MBytes + 0.1MB
ytes + 0.12MBytes + 0.0008), about 3
86 MBytes, a still image is about 6.4 MBytes, a voice is 7.7 MBytes, and a character is 65 KBytes.

Next, in step 45, the threshold value calculation unit 32 divides the value of the information amount for each medium obtained from the data amount management unit 31 by the processing amount of each medium shown in FIG. , Determine thresholds for each media. For example, if the moving image data is 386 MBytes, the threshold value is 386 × 1024 MBytes / 200.
If the number of still image data is 6.4 MBytes, the threshold value is 6.4 ×
1024 KBytes / 100 KBytes = 65, and in the case of voice data, the same calculation is performed to obtain 7.7 × 1024.
KBytes / 8KBytes = 986, and in the case of character data, it becomes 33 with 65KBytes / 2KBytes.

The terminal device activation unit 33, in step 46,
The transmission storage determination unit 7 of the terminal device 3 receives the threshold value data.
To the display medium selection unit 6 from the transmission / storage determination unit 7
Store it in the inner buffer. Next, the terminal device activation unit 33
In step 47, the setting request is made to the transmission / storage transmission section 7 of the terminal device 3.

The process of database construction on the terminal device side after the setting request is the same as the process described in the first embodiment, and since it can be easily analogized, the description thereof will be omitted.

According to the present embodiment, even when multimedia data is sequentially added to the server side, it is possible to set an appropriate threshold value as long as each information is added in an equal unit. Thus, the data can be automatically shared between the terminal device and the server device without overflowing the data from the actual data storage unit of the terminal device.

<Third Embodiment> This is step 43 in FIG.
As a means for calculating the amount of data for each medium, as shown in FIG. 10, a data amount management unit 31, an actual data size calculation unit 51 that calculates the size of each actual data, and an actual data storage unit 36. According to the type of medium attached to each data in the medium, a data determination unit 52 that distributes the data size for each medium, and a data amount addition unit 53 that accumulates by adding the data amount of each medium Is.

In the process of step 43 of FIG. 9 in this embodiment, first, for all the data in the actual data storage unit 36, the actual data size calculation unit 51
Measure the size of the data referenced by the pointer to the actual data. The size of the data is the size of the area occupied by the file or data in the actual data storage unit 36. Next, in the data determination unit 52, the type of media is used to select the corresponding adder of the data amount addition unit 53. Next, with the addition result of the adder corresponding to each media,
The amount of data for each medium is accumulated. After processing all the data in the actual data storage unit 36, the data for each medium is sent to the threshold value calculation unit 32.

According to the present embodiment, even if the distribution of the data amount for each medium which is predicted and given in advance is different from the actual data amount, the data for each medium in the actual data storage unit on the server device side is different. By calculating the amount of data,
Data can always be automatically distributed between the server device and the terminal device.

[0050]

According to the present invention, all multimedia data is stored in the server device, and the data is distributed between the server device and the terminal device according to the data transfer capacity and the data storage capacity of the terminal device. In a system that uses multimedia data, data that cannot be processed, data that needs to be copied to the terminal, and data that needs sequential data transfer depending on the data storage capacity and data transfer capacity of the terminal. It is possible to automatically determine whether the data cannot be processed, provide alternative data for the unprocessable data, and automatically transfer the data that needs to be copied to the terminal device side. As a result, it becomes possible to use the multimedia information by searching and displaying the multimedia data according to the capability provided by the user to the transmission line between the terminal device, the server device and the terminal device.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a first embodiment of the present invention.

FIG. 2 is a configuration example of real data attribute information in a real data storage unit in FIG.

FIG. 3 is a data configuration example of a control data storage unit in FIG.

4 is an example of a processing flowchart for a setting request in the embodiment of FIG.

5 is an example of a processing flowchart for a search request in the embodiment of FIG.

FIG. 6 is a system configuration diagram of a second embodiment of the present invention.

FIG. 7 is a configuration example of real data attribute information in a real data storage unit on the server device side in FIG.

8 is a data configuration example of a control data storage unit of the server device in FIG.

9 is an example of a processing flowchart for a setting request in the embodiment of FIG.

FIG. 10 is a configuration diagram of a server device side according to a third embodiment of the present invention.

[Explanation of symbols]

 1 server device 2 transmission line 3 terminal device 4 actual data storage unit 5 control data storage unit 6 display media selection unit 7 transmission storage determination unit 8 alternative information setting unit 9 input / output control unit 10 display device 31 data amount management unit 32 threshold Value calculation unit 33 Terminal device activation unit 34 Data transfer unit 35 Control data storage unit 36 Actual data storage unit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroshi Hamada 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (2)

[Claims] 1. In a multimedia system in which a server device for storing multimedia data and a terminal device for providing multimedia data to a user are connected by a transmission line, each of the multimedia data is configured in the terminal device. A means for estimating the amount of information required to display each medium from the type of the medium and calculating the processing capacity required to display each medium, the required processing capacity and the transmission stored in the terminal. A means for selecting a displayable medium according to a pre-stored rule from the value of the information transmission capacity of the line and the value of the information storage capacity held by the terminal, and for each medium of the displayable medium information. From the value of the processing capacity and the value of the information transmission capacity required to be displayed on the display, the transmission processing of the data for display is performed within a predetermined time. There is a request from the user to calculate whether or not to display the display information, determine whether to copy the display information from the server device into the terminal device, and whether to transmit it as necessary, and a display request from the user for information that cannot be displayed. In this case, the multimedia system is provided with means for replacing the value of the data type with information that cannot be displayed. 2. The multimedia system according to claim 1, wherein, when data is added to the server device, data is distributed in the server device so that appropriate distribution is always performed between the server system and the terminal device. , A means for measuring the amount of data for each medium, the amount of data for each medium and the amount of data processing required to display for each predetermined medium, and the measured data for each medium A means for generating a threshold value for judging whether or not the data of each media can be stored in the terminal device from the amount, and setting of distribution of multimedia data in accordance with addition of data from the server device to the terminal device. A multimedia data system characterized by comprising means for performing.