JP2003303156A - Data transmitting device, data transmission system, data transmission managing device, data transmitting method, data transmission managing method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce traffic in a network without unreasonably impairing quality of sound or images noticed by users when data for signifying sounds and images is transmitted to a communication terminal. <P>SOLUTION: A server device 40 for transmitting data to a communication terminal 10 equipped with a display part 15 for displaying images has a music data storage means 43 for storing therein music data to be transmitted to the communication terminal, and a data amount changing part 46. The changing part 46 changes the amount of data stored in the storage part 43 in compliance with a relation between a position where an icon 72 corresponding to the music data is displayed in the display part 15 and a position named by a user of the terminal 10 as a position where a pointer 77 for indicating the icon 72 is displayed on the display part 15. After the data amount of the music data is changed by the changing part 46, the server 40 transmits the data to the communication terminal 10. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for transmitting data representing sound and images to a communication terminal, a program for implementing this method, and a recording medium recording this program.

[0002]

2. Description of the Related Art Conventionally, there has been a service in which a server device connected to a network such as the Internet provides data representing various information such as sound and images in response to a request transmitted from a communication terminal such as a personal computer. It is provided. By using this service, the user of the communication terminal can output the desired music from the speaker of the communication terminal or display the desired image on the display device of the communication terminal.

[0003]

However, with the spread of communication services in recent years, there has been a problem that the traffic generated in the network increases when data is communicated from the server device to the communication terminal. In order to solve this problem, it is conceivable that the server device reduces the data amount of the data requested by the user and then transmits the data to the communication terminal. In this case, the data is output at the communication terminal. There may arise a problem that the quality of sound or image is deteriorated.

The present invention has been made in view of the above-described circumstances, and when transmitting data representing a sound or an image to a communication terminal, the quality of the sound or the image noticed by the user is not unduly impaired. , A data transmission device capable of reducing network traffic, a data transmission system,
An object is to provide a data transmission management device, a data transmission method, a data transmission management method, a program, and a recording medium.

[0005]

In order to solve the above problems, the first feature of the present invention is to provide an apparatus for transmitting data to a communication terminal equipped with a display device for displaying an image, wherein the communication terminal is The storage means for storing the data to be transmitted, the data amount of the data stored in the storage means, the position at which the target object corresponding to the data is displayed on the display device, and the target object are indicated. A data amount changing unit that changes the indicator for displaying the position on the display device according to the relationship with the position designated by the user of the communication terminal, and the data amount is changed by the data amount changing unit. And a transmission means for transmitting the subsequent data to the communication terminal.

According to this structure, the amount of data transmitted to the communication terminal is changed according to the positional relationship between the indicator displayed on the display device of the communication terminal and the target. . Therefore, the network traffic can be reduced as compared with the case where data is transmitted to the communication terminal without adjusting the data amount. Furthermore, since the amount of data to be transmitted to the communication terminal is changed according to the positional relationship between the target object and the indicator whose position can be specified by the user, the quality of the sound or image corresponding to the data is changed. There is no unreasonable loss. For example, if the changed data amount decreases as the distance (positional relationship) between the target object and the indicator increases, the user:
In particular, by bringing the indicator closer to the target object of the desired data, the data corresponding to the target object can be acquired in a state where the data amount is not reduced so much.
That is, it is possible to prevent the sound and the image quality that are particularly desired by the user from being significantly impaired.

In order to solve the above-mentioned problems, a second feature of the present invention is that in a device for transmitting data to a communication terminal equipped with a display device for displaying an image, a plurality of objects representing the same object are displayed. A storage unit that stores a plurality of data that are different from each other in data amount, and a position where a target object corresponding to the target among the plurality of data representing the same target is displayed on the display device, Data specifying means for specifying data having a data amount corresponding to a relationship with a position designated by a user of the communication terminal as a position where an indicator for pointing the target object is displayed on the display device; And a transmitting means for transmitting the data specified by the specifying means to the communication terminal.

Also in this configuration, the data amount of the data transmitted to the communication terminal varies depending on the positional relationship between the target object displayed on the display device and the indicator. The same effect as when the feature is adopted can be obtained. Further, according to this configuration, since a plurality of data representing the same object and having different data amounts are prepared in advance, a means for changing the data amount of certain data can be unnecessary.

Further, in order to solve the above-mentioned problems, a third feature of the present invention is that in a system for transmitting data to a communication terminal equipped with a display device for displaying an image, a plurality of communicable terminals can be used. A data transmission device of
A plurality of data transmission devices that store a plurality of data that represent the same target and have different data amounts, and a target object corresponding to the target among the plurality of data that represent the same target are displayed on the display device. The stored data and the data of the data amount according to the relationship between the position designated by the user of the communication terminal as the position where the indicator for pointing the target object is displayed on the display device. There is provided a data transmission management device that specifies a transmission device and instructs the communication terminal to specify the specified data transmission device as a data transmission device for which the communication terminal should request data.

Also in this configuration, the data amount of the data transmitted to the communication terminal is varied depending on the positional relationship between the target object displayed on the display device and the indicator. The same effect as when the feature is adopted can be obtained. Further, according to this configuration, since a plurality of data representing the same target is distributed and held in a plurality of data transmission devices, the processing load on each device configuring the system is reduced. be able to

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Such an embodiment shows one aspect of the present invention, does not limit the present invention, and can be arbitrarily modified within the scope of the present invention.

<A: First Embodiment><A-1: Configuration of First Embodiment> First, the configuration of a communication system according to a first embodiment of the present invention will be described with reference to FIG. As shown in the figure, this communication system includes a communication terminal 10 such as a personal computer and a network 30 including the Internet, a public switched telephone network and the like.
And a server device 40 connected to this network 30
Have and. Under such a configuration, the server device 40 transmits data representing a sound or an image to the communication terminal 10 via the network 30.

FIG. 2 is a block diagram showing the configuration of the communication terminal 10. As shown in the figure, this communication terminal 10
It has a control unit 11, a communication unit 12, a sound output unit 13, an operation unit 14, and a display unit 15. Note that in reality, the communication terminal 1
Although 0 has a storage device such as a hard disk device, the illustration thereof is omitted in FIG.

The control unit 11 is means for controlling the whole of the communication terminal 10, and a CPU (Central Processing U) for controlling each unit by executing a program.
nit), a ROM (Read Only Memory) in which a program executed by the CPU is stored, and a RAM (Random Access Memo) used as a work area by the CPU.
ry) and. The communication unit 12 is a communication device such as a modem, and is a means for performing communication with the server device 40 via the network 30. That is, the communication unit 12 transmits the data output from the control unit 11 to the network 30, while receiving the data transmitted from the server device 40 via the network 30 to receive the data.
Output to.

The sound output section 13 outputs a musical sound based on the music data supplied from the control section 11. In particular,
The sound output unit 13 includes a sound system including a D / A (Digital / Analog) converter, an amplifier, a speaker, and the like. When music data that is digital data is received from the control unit 11, the sound data is D / A converted. A tone is output from the speaker based on the tone signal obtained by Instead of the speaker, headphones or earphones that can be attached to each ear may be used. The operation unit 14 includes an input device such as a mouse and a keyboard, and outputs a signal according to a user operation to the control unit 11.

The display unit 15 is a CRT (Cathode Ray Tub).
e), a liquid crystal display panel, etc., and displays various images based on image data provided from the control unit 11. Here, when the user performs a predetermined operation on the operation unit 14, the control unit 11 acquires image data representing the music selection screen from the server device 40 and causes the display unit 15 to display the music selection screen. FIG. 3 is a diagram showing the contents of the music selection screen. The music selection screen 71 is a screen for the user to select any one of the plurality of music data held by the server device 40, and as shown in FIG. 3, an icon 72 corresponding to each music data is a GUI ( Graphical User
Interface)). Each icon 72 (target object) is composed of a different pattern or character for each piece of music data, and is a target when the user of the communication terminal 10 selects any piece of music.

Further, the display section 15 displays a pointer 77 (indicator). The pointer 77 is used by the user to indicate any position in the display image on the display unit 15, and the display position is moved according to the instruction given to the operation unit 14 by the user. ing. When the music selection screen 71 is displayed, the user firstly visually recognizes the music selection screen 71 while operating the operation unit 14
Is operated to move the pointer 77 so as to overlap the icon 72 corresponding to the desired music, and secondly,
By giving a predetermined operation to the operation unit 14 in this state (for example, clicking a mouse button), the music data corresponding to the icon 72 can be selected as an acquisition target. The method of confirming the selection of the music data to be reproduced is not limited to this. For example, when the pointer 77 is brought closer to any of the icons 72 than a predetermined distance, The music data corresponding to this icon 72 may be determined as the reproduction target.

Further, in the present embodiment, even before the selection of the music data is confirmed by performing these series of operations, one or more music data displayed as icons on the music selection screen 71 are reproduced. It has become. More specifically, when the music selection screen 71 is displayed, the music data corresponding to each icon 72 on this screen is adjusted to a data amount according to the positional relationship between the pointer 77 and each icon 72, and then the server is displayed. It is transmitted from the device 40 to the communication terminal 10. Then, musical tones corresponding to these pieces of music data are output from the sound output unit 13 in parallel. Therefore, when the user gives an instruction to change the display position of the pointer 77 by operating the operation unit 14 while the music selection screen 71 is displayed, the control unit 11 moves Set the coordinates of the pointer 77 to
The information is transmitted to the server device 40 via the communication unit 12.

Next, FIG. 4 is a block diagram showing the configuration of the server device 40. As shown in the figure, the server device 40 includes a control unit 41, a communication unit 42, a music data storage unit 43, an image data storage unit 44, a position detection unit 45, and a data amount change unit 46. Of these, the control unit 41 includes a CPU, a ROM, and a RAM, like the control unit 11 of the communication terminal 10, and functions as a control center of the server device 40. The communication unit 42 is means for communicating with each communication terminal 10 via the network 30.

The music data storage unit 43 is means for storing a plurality of music data to be transmitted to the communication terminal 10. The plurality of pieces of music data are digital data showing musical tone signal waveforms of different music pieces. That is, in each piece of music data, a musical tone signal corresponding to the musical sound of the actually played musical piece has a predetermined frequency (here, 44.1 kHz).
It is composed of data obtained by sampling in (hereinafter referred to as "sampling data").

On the other hand, the image data storage section 44 is means for storing image data representing the music selection screen 71. The music data storage unit 43 and the image data storage unit 44 are configured by a storage device such as a hard disk device. In the present embodiment, it is assumed that the music data storage unit 43 stores music data of a total of four music pieces, that is, music piece A, music piece B, music piece C, and music piece D. At this time,
On the music selection screen 71 represented by the image data stored in the image data storage unit 44, as shown in FIG. 3, an icon 72A corresponding to the music A and an icon 7 corresponding to the music B are displayed.
2B, an icon 72C corresponding to the music C, and an icon 72D corresponding to the music D are included.

The position detector 45 shown in FIG.
This is means for detecting the positional relationship between the pointer 77 displayed on the display unit 15 of 0 and each icon 72 on the music selection screen 71. However, the position detection unit 45 in this embodiment calculates the distance between the pointer 77 and each icon 72. The position detection unit 45 includes a target body position storage unit 45a that stores the coordinates where each icon 72 should be arranged on the music selection screen 71. On the other hand, when the coordinates of the pointer 77 on the display unit 15 of the communication terminal 10 are received from the communication terminal 10, the control unit 41 outputs the coordinates to the position detection unit 45. The position detection unit 45 calculates the distance between the coordinates of the pointer 77 notified from the control unit 41 in this way and the coordinates of each icon 72 stored in the target body position storage unit 45a, and the distance obtained for each icon 72 is calculated. Is output to the control unit 41.

The data amount changing unit 46 displays the music selection screen 71.
It is a means for changing the data amount of each piece of music data displayed as an icon in (3) according to an instruction from the control unit 41. Here, the control unit 41 is configured to instruct the data amount changing unit 46 of the sampling frequency according to the distance between the pointer 77 and the icon 72 corresponding to each piece of music data. The data amount changing unit 46, for each music data, sets the sampling data of the music data obtained at a predetermined sampling frequency so that the sampling frequency of the music data becomes the sampling frequency instructed by the control unit 41. Are thinned out.
As a result, the data amount of each music data is changed according to the distance between the icon 72 and the pointer 77 corresponding to the music data.

Here, the control unit 41 controls the pointer 77 and each icon 7 based on the parameter table shown in FIG.
The sampling frequency is instructed according to the distance from 2. As shown in the figure, this parameter table is a table in which the distance between the pointer 77 and the icon 72 is associated with the sampling frequency for each music data. For example, in FIG. 5, the sampling frequency “f2” is set for the distances “L1” to “L2”.
(= 22 kHz) "is associated. Therefore, when the distance between the icon 72 of a certain music piece and the pointer 77 is within the range from “L1” to “L2”, the sampling data is thinned out so that the sampling frequency of the music data of the music piece becomes “f2”. Is performed.

The parameter table in this embodiment is set so that the sampling frequency decreases as the distance between the pointer 77 and the icon 72 increases. Further, the sampling frequency “0” is associated with the distance exceeding the predetermined threshold value. Therefore, the pointer 77 and the icon 72
When the distance between and is a value exceeding a predetermined threshold value, the data amount of the music data corresponding to the icon 72 is “zero”. That is, the music data corresponding to the icon whose distance exceeds the predetermined threshold from the pointer 77 is not transmitted to the communication terminal 10.

<A-2: Operation of the First Embodiment> Next, the operation of the present embodiment will be described. First, when the user of the communication terminal 10 performs a predetermined operation on the operation unit 14 and gives an instruction to display the music selection screen 71, the control unit 11 causes the communication unit 12 to notify the server device 40 of the music. Send a selection request signal. The music selection request signal is a signal for requesting image data representing the music selection screen 71, and includes the coordinates of the pointer 77 displayed on the display unit 15 at this time.

When the music selection request signal is received via the network 30 and the communication section 42, the control section 41 of the server device 40 executes the operation shown in FIG. That is, the control unit 41 first reads the image data of the music selection screen 71 from the image data storage unit 44, and transmits this image data to the communication terminal 10 (step Sa1). On the other hand, the control unit 11 of the communication terminal 10 controls the display unit 14 based on the image data received via the communication unit 12 to display the music selection screen 71 shown in FIG.

Next, the control unit 41 of the server device 40 acquires the positional relationship between the pointer 77 and each icon 72 at that time from the position detection unit 45 (step Sa).
2). That is, first, the control unit 41 causes the step Sa1
The coordinates of the pointer 77 included in the music selection request signal received at are output to the position detector 45. On the other hand, the position detection unit 45 determines the distance between each icon 72 and the pointer 77 based on the coordinates of each icon 72 stored in the target body position storage unit 45a and the coordinates of the pointer 77 given from the control unit 41. Is calculated. The control unit 41 acquires the distance to the pointer 77 calculated for each icon 72 in this way.

Next, the control unit 41 refers to the parameter table to determine the sampling frequency of each changed music data according to the distance between the icon 72 of the music and the pointer 77 acquired from the position detecting unit 45. The sampling frequency is instructed to the data amount changing unit 46 (step Sa3).

For example, as shown in FIG. 3, the distance between the pointer 77 and the icon 72A is "0" to "L1".
The distance between the pointer 77 and the icon 72B and the distance between the pointer 77 and the icon 72C are "L".
It is assumed that the value is from 2 ”to“ L3 ”, and the distance between the pointer 77 and the icon 72D exceeds a predetermined threshold value. At this time, the control unit 41 refers to the contents of the parameter table shown in FIG.
Sampling frequency “f1 (= 4
4.1 kHz) ", and sampling frequency" f3 (= 10 kHz) "for music data of music B and music C.
And the sampling frequency “0” for the music data of the music D to the data amount changing unit 46.

Next, the control unit 41 controls the music data storage unit 4
Of the four pieces of music data stored in No. 3, a part including the beginning is output to the data amount changing unit 46 (step Sa
4). On the other hand, the data amount changing unit 46 thins out the plurality of pieces of music data supplied in this way so that the sampling frequency becomes the sampling frequency instructed by the control unit 41 for the music data, and the obtained music data is obtained. Is added and output to the control unit 41. Figure 3
For example, in the case shown in, the sampling frequency is “f
1 (= 44.1 kHz) ”and the song data of the song A and the sampling frequency is“ f3 (= 10 kHz).
The music data of music B and music C changed to z) are added and output to the control unit 41. Since the sampling frequency “0” is set for the music D, the music data corresponding to the music D cannot be included in the output target to the control unit 41.

As described above, the data amount of each music data is
The data amount is changed according to the distance between the icon 72 of the music and the pointer 77. Upon receiving the music data whose data amount has been changed, the control unit 41 transmits these music data from the communication unit 42 to the communication terminal 10 (step Sa5).

On the other hand, the control unit 11 of the communication terminal 10 executes the operation shown in FIG. 7 at regular time intervals after transmitting the music selection request signal described above. That is, first, the control unit 11 determines whether or not the user has given an instruction to move the pointer 77 (step Sb1). here,
When the positional relationship between the pointer 77 and each icon 72 is changed, the data amount changing unit 46 needs to update the sampling frequency set for each music data. Therefore, when it is determined in the above determination that the instruction to move the pointer 77 has been given, the control unit 11 detects the coordinates of the pointer 77 after the movement (step Sb2) and transmits the coordinates to the server device 40. (Step Sb3).

On the other hand, the control unit 41 of the server device 40 executes the operation shown in FIG. 8 at regular time intervals after executing the series of processing shown in FIG. That is, first, the control unit 41 determines whether or not the coordinates of the pointer 77 have been received from the communication terminal 10 (step Sc1). Here, when it is determined that the coordinates of the pointer 77 are received (that is,
When a movement instruction of the pointer 77 is given to the operation unit 14), it is necessary to update the sampling frequency set in the data amount changing unit 46. So in this case,
The control unit 41 uses the same procedure as step Sa2 in FIG.
The distance between the moved pointer 77 and each icon 72 is acquired from the position detection unit 45 (step Sc2). further,
Similar to step Sa3 in FIG. 6, the control unit 41 refers to the parameter table to set the sampling frequency according to the distance between the moved pointer 77 and the icon 72 of the music as the sampling frequency of each music data. Instruct the data amount changing unit 46 (step Sc)
3). After that, the control unit 41 shifts the processing to step Sc4.

On the other hand, when the coordinates of the pointer 77 have not been received, that is, when the display position of the pointer 77 has not changed, it is not necessary to change the sampling frequency set in the data amount changing unit 46. Therefore, the control unit 41 shifts the processing to Step Sc4 without going through Steps Sc2 and Sc3 (Step Sc).
1; No).

At step Sc4, the control section 41
Of the respective music data stored in the music data storage unit 43, data is obtained by reading the portion following the portion read immediately before (the portion read in step Sa4 of FIG. 6 or the step Sc4 of FIG. 8 executed immediately before). It is output to the amount changing unit 46 (step Sc4). Furthermore, the control unit 4
1 transmits the music data whose sampling frequency is changed by the data amount changing unit 46 to the communication terminal 10 (step Sc5). In this way, the sampling frequency of each piece of music data, in other words, the data amount of each piece of music data is changed at any time according to the distance between each icon 72 and the pointer 77.

On the other hand, the control unit 11 of the communication terminal 10 is shown in FIG.
In step Sb4 shown in, it is determined whether or not the music data whose data amount has been changed is received from the server device 40. Here, if it is determined that the music data has been received, the control unit 11 outputs these music data to the sound output unit 13 (step Sb5), and then the process of step Sb6.
Move to. On the other hand, the sound output unit 13 D / A-converts the music data supplied from the control unit 11 to generate a musical tone signal, and outputs a musical tone corresponding to the musical tone signal from the speaker. Here, the musical sound output from the sound output unit 13 generally has higher sound quality as the sampling frequency of the music data is higher. Therefore, the musical sound of each music output from the sound output unit 13 is output with a sound quality according to the distance between the icon 72 of the music and the pointer 77.
On the other hand, when determining in step Sb4 that the music data has not been received, the control unit 11 shifts the processing to step Sb6 without passing through step Sb5.

Next, in step Sb6, the controller 1
1 determines whether or not the selection of music data has been confirmed by the user. As a result, when it is determined that the selection is confirmed, the control unit 11 transmits a music data request signal designating the music data to the server device 40 (step Sb7).

On the other hand, after transmitting the music data in step Sc5 of FIG. 8, the control unit 41 of the server device 40
It is determined whether a music data request signal has been received from the communication terminal 10 (step Sc6). As a result, when it is determined that the music data has been received, the control unit 41 reads the music data designated by the music data request signal from the music data storage unit 43, and the music data is kept as it is, that is, by the data amount changing unit 46. It is transmitted to the communication terminal 10 without going through the data amount changing process (step Sc7),
The process ends. On the other hand, when it is determined that the music data request signal is not received, the control unit 41 ends the process without passing through step Sc7.

On the other hand, when the music data transmitted in step Sc7 of FIG. 8 is received, the control unit 11 of the communication terminal 10 stores this music data in a storage device (not shown) (step Sb8). That is, the user of the communication terminal 10 can obtain the music data of which the data amount is not reduced for the desired music. If it is determined in step Sb6 that the song has not been finalized, the control unit 11 ends the process without passing through steps Sb7 and Sb8.

As described above, according to the present embodiment, the data amount of the music data transmitted to the communication terminal 10 is determined by the distance between the pointer 77 displayed on the display unit 15 of the communication terminal 10 and the icon 72. It is designed to be adjusted accordingly. Therefore, the communication terminal 1 does not need to adjust the data amount of the music data corresponding to each icon.
Network 3 compared to the case of sending to 0
0 traffic can be reduced. Further, the pointer 7 is displayed on the icon 72 of the music that the user is particularly paying attention to.
If 7 is brought closer, the music will be output with higher sound quality than other music (that is, the music corresponding to the icon 72 whose pointer 77 is moved away). That is, the sound quality of the music desired by the user is not significantly impaired.

Further, the contents of the music and the icon 72 of each music
For a user who is familiar with the position of, there is also an advantage that the position of the pointer 77 can be confirmed by a change in the sound quality of each music. For example, when the sound quality of the music A is improved while the sound quality of the music B is deteriorated as the pointer 77 moves, the user moves the pointer 77 from the icon 72B of the music B toward the icon 72A of the music A. Can be recognized.

<B: Second Embodiment> Next, the second embodiment of the present invention
An embodiment will be described. In the first embodiment, the positional relationship (distance) between the icon 72 and the pointer 77.
The data amount of the music data is changed according to the above, but in the present embodiment, an image (still image or moving image)
The data amount of the image data representing is changed. Note that the configurations of the communication system, the communication terminal 10, and the server device 40 according to the present embodiment are the same as those in the first embodiment shown in FIGS. 1, 2, and 4, respectively, and thus a detailed description thereof will be given. Is omitted.

In the first embodiment described above, the music selection screen 71 including a plurality of icons 72 corresponding to music data is displayed on the display unit 15 of the communication terminal 10. In the present embodiment, this music selection screen 71
Instead of this, the image selection screen 73 shown in FIG. 9 is displayed. The image selection screen 73 is a screen for the user to select any one of a plurality of image data held by the server device 40, and an area in which images corresponding to these image data should be displayed (hereinafter, referred to as an area). "Image area") 74 is included. Here, it is assumed that the image data storage unit 44 of the server device 40 stores image data representing the image A, the image B, the image C, and the image D, respectively. At this time, as shown in FIG. 9, the image selection screen 73 has an image area 74 in which the image A is to be displayed.
A, an image area 74B in which the image B should be displayed, an image area 74C in which the image C should be displayed, and an image area 74D in which the image D should be displayed are arranged. Each of these image areas 74 corresponds to the “target body” in the present invention, like the icon 72 in the first embodiment. That is, the user first moves the pointer 77 so as to overlap the image area 74 corresponding to the desired image by operating the operation unit 14 while visually checking the image selection screen 73, and secondly, in this state. By giving a predetermined operation to the operation unit 14, the image data corresponding to the image area 74 can be determined as a transmission target from the server device 40. However, even before these series of operations are performed to determine the image data to be acquired, each image area 74 of the image selection screen 73 has
Each image is displayed based on the image data after the data amount is adjusted by the data amount changing unit 46.

The data amount changing unit 46 in this embodiment
Is a means for changing the data amount of the image data to be displayed in each image area 74 of the image selection screen 73 in accordance with an instruction from the control unit 41. Here, the control unit 41
Is the image area 74 and pointer 7 corresponding to each image data.
The resolution according to the distance from the image processing unit 7 is instructed to the data amount changing unit 46. The data amount changing unit 46
The thinning process is performed on each image data corresponding to each image area 74 of the image selection screen 73 so that the resolution of the image becomes the resolution instructed by the control unit 41. As a result, the data amount of each image data is determined by the pointer 77 and the image area 74 in which the image indicated by the image data is to be displayed.
It will be changed according to the distance between.

Here, the control unit 41 instructs the resolution according to the distance between the pointer 77 and each image area 74 based on the parameter table shown in FIG. As shown in the figure, this parameter table is a table in which the distance from the pointer 77 to each image area 74 is associated with the resolution that the image corresponding to each image data should have. For example, according to the parameter table shown in FIG. 10, the distance between a certain image area 74 and the pointer 77 is “L”.
When it is within the range from 1 ”to“ L2 ”, the thinning-out process of the image data is performed so that the resolution of the image to be displayed in the image area 74 becomes“ k2 ”.

The operation of this embodiment is similar to that of the first embodiment shown in FIGS. 6 to 8. That is,
When the image selection screen 73 is displayed on the display unit 15 of the communication terminal 10 (step Sa1 in FIG. 6), the control unit 41 of the server device 40 firstly acquires the pointer 77 and each image acquired from the position detection unit 45. Secondly, an image of each image read from the image data storage unit 44 is instructed to the data amount changing unit 46 by the resolution according to the distance from the area 74 (corresponding to step Sa3 in FIG. 6 or step Sc3 in FIG. 8). The data is output to the data amount changing unit 46 (corresponding to step Sa4 in FIG. 6 or step Sc4 in FIG. 8), and thirdly, the image data after the data amount (resolution) change is transmitted to the communication terminal 10 (FIG. 6). (Corresponding to step Sa5 of step S5 or step Sc5 of FIG. When each image data after the data amount change is received, the control unit 11 of the communication terminal 10 controls the display unit 15 to display the image represented by each image data in each image area 74 of the image selection screen 73. (Step S in FIG. 7
equivalent to b5). As a result, the image displayed in each image area 74 is displayed with the image quality (resolution) according to the distance between the image area 74 and the pointer 77.

According to this embodiment, the data amount of the image data transmitted to the communication terminal 10 is changed according to the distance between the pointer 77 displayed on the display unit 15 of the communication terminal 10 and the image area 74. Therefore, it is possible to reduce the traffic of the network 30 as compared with the case where the image data to be displayed in each image area 74 is transmitted to the communication terminal without adjusting the data amount. You can In addition, the user pays particular attention to the pointer 77.
The image displayed in the image area 74 brought closer to is output with higher image quality than the image displayed in the other image area 74. That is, the image quality of the image that the user wants to send is not unduly impaired.

<C: Third Embodiment> Next, the third embodiment of the present invention will be described.
An embodiment will be described. In each of the above embodiments, the pointer 77 as the indicator and the icon 7 as the target object.
2 or the data amount of the data transmitted to the communication terminal 10 is changed according to the positional relationship with the image area 74. On the other hand, in the present embodiment, the data amount changing process is not performed. That is, in the present embodiment, for the same target (the same song or the same image),
A plurality of data having different data amounts are prepared in advance, and among these data, the data amount of the data amount corresponding to the positional relationship between the indicator and the target object is transmitted to the communication terminal 10. . In the following, similar to the first embodiment, the case where the transmission target to the communication terminal 10 is music data will be exemplified. Further, the configurations of the communication system, the communication terminal 10 and the server device 40 according to the present embodiment are the same as those shown in FIGS. 1, 2 and 4, respectively, and thus detailed description thereof will be omitted. However, since the amount of data is not changed in this embodiment,
The server device 40 does not have the data amount changing unit 46 shown in FIG.

FIG. 11 is a diagram showing stored contents of the music data storage unit 43 in the server device 40. As shown in the figure, the music data storage unit 43 has a music selection screen 71.
A plurality of pieces of music data each having a different data amount are stored for each piece of music displayed as an icon (that is, for each same target). Specifically, a plurality of music data representing each music is obtained by sampling at different sampling frequencies. For example, in FIG.
1, the song data a1 having a sampling frequency of f1 (= 44.1 kHz), the song data a2 having a sampling frequency of f2 (= 22 kHz), and the sampling frequency of f3 (= 10 kHz) for the song A.
The music data a3 corresponding to z) is stored in the music data storage unit 43. Therefore, the data amount of the music data a1 is the largest, and the data amount of the music data decreases as the sampling frequency decreases. The same applies to other songs displayed as icons on the song selection screen 71.

Next, the operation of this embodiment will be described. However, since the operation of the communication terminal 10 is similar to that shown in FIG. 7 above, only the operation of the server device 40 will be described below.

In the above embodiment, the server device 40
Control unit 41 of each icon 7 in the music selection screen 71
2 is acquired (step Sa2 in FIG. 6 or step Sc2 in FIG. 8), each music data stored in the music data storage unit 43 is changed to a data amount corresponding to this positional relationship. (Steps Sa3 and Sa4 in FIG. 6 and step Sc in FIG. 8)
3 and Sc4). In the present embodiment, instead of this data amount change processing, of the plurality of song data stored for each song, the song data having the data amount corresponding to the positional relationship between the icon 72 of the song and the pointer 77 is specified. Processing is performed. That is, the control unit 41 of the server device 40 refers to the parameter table shown in FIG. 5 to refer to the icon 72 of the music and the pointer 77 for each music displayed as an icon on the music selection screen 71.
The music data having the sampling frequency corresponding to the distance between and is specified as the transmission target to the communication terminal 10.

For example, when the icons 72 and the pointer 77 are in the positional relationship shown in FIG. 3, the control unit 41 of the server device 40 causes the sampling frequency f for the music A to be changed.
The music data a1 of No. 1, the music data b3 of the sampling frequency f3 for the music B, and the music data c3 of the sampling frequency f3 for the music C are specified as transmission targets to the communication terminal 10. For the music D, an icon 72D and a pointer 7 corresponding to the music D are displayed.
The music data is not specified because the distance from 7 exceeds a predetermined threshold value. Then, the control unit 41 reads the specified music data from the music data storage unit 43 and transmits it to the communication terminal 10.

Also in this embodiment, the same effect as that of the first embodiment can be obtained. In addition, according to the present embodiment, there is no need for means (data amount changing unit 46) for changing the data amount of the music data, which is advantageous in that the configuration of the server device 40 can be simplified. . In addition, in the present embodiment, the case where the music data is targeted for transmission to the communication terminal 10 is illustrated, but the same configuration is adopted when the image data is targeted for transmission as shown in the second embodiment. obtain. That is, in this case, a plurality of image data representing images to be displayed in each image area 74 and having different data amounts are stored in the image data storage unit 44. Then, for each image area 74,
It suffices to select image data having a data amount corresponding to the positional relationship between the image area 74 and the pointer 77 and transmit it to the communication terminal 10.

<D: Fourth Embodiment><D-1: Configuration of Fourth Embodiment> Next, a fourth embodiment of the present invention will be described. FIG. 12 is a block diagram showing the configuration of the communication system according to this embodiment. As shown in the figure, this communication system has communication terminals 10, 10, ... Having the same configurations as those of the above embodiments, a network 30, a management server 51 connected to this network 30, and a plurality of data transmissions. Server 52 (52A, 52
B, 52C, ...). With such a configuration, music data is transmitted from each data transmission server 52 to the communication terminal 10.

FIG. 13 is a block diagram showing the configuration of each data transmission server 52. As shown in the figure, the data transmission server 52 is a computer system for transmitting music data in response to a request from the communication terminal 10, and a music data storage unit 521 for storing music data,
The music data storage unit 521 includes a control unit 522 for reading music data, and a communication unit 523 for transmitting the music data read by the control unit 522 to the communication terminal 10 via the network 30.

Here, in the present embodiment, the third
Similar to the embodiment, a plurality of music data having different data amounts are prepared in advance for each music displayed as an icon on the music selection screen 71. More specifically, a plurality of music data having different sampling frequencies at the time of creation (that is, different data amounts) are prepared for one music.

A plurality of music data corresponding to the same music is distributed and held in different data transmission servers 52. For example, as shown in parentheses in FIG. 12, among the music data representing the music A, music data a1 having a sampling frequency of f1 is held by the data transmission server 52A (that is, stored in the music data storage unit 521). , Music data a2 having a sampling frequency of f2 is held by the data transmission server 52B, and music data a3 having a sampling frequency of f3
Is stored in the data transmission server 52C, and so on. The same applies to other songs (song B, song C, and song D) displayed as icons on the song selection screen 71.

On the other hand, the management server 51 displays the music selection screen 7
1 is a computer system for identifying music data having a data amount corresponding to the positional relationship between each icon 72 and the pointer 77 in 1 and for instructing the communication terminal 10 the data transmission server 52 holding this music data. . As illustrated in FIG. 14, the management server 51 includes a control unit 511, a communication unit 512, a storage unit 513, an image data storage unit 514, and a position detection unit 515. Of these, the communication unit 512, the image data storage unit 514 and the position detection unit 515 (target body position storage unit 515a) are the communication unit 42, the image data storage unit 44 and the position detection unit shown in FIG. 4 in the first embodiment. 45 (target body position storage unit 45
It has the same function as a).

The storage unit 513 stores the transmission management table shown in FIG. 15 together with the parameter table shown in FIG. This transmission management table includes, for each song displayed as an icon on the song selection screen 71, sampling frequencies of a plurality of song data representing this song and the address (I) of the data transmission server 52 that holds each song data.
P address) is associated with the table. For example, according to the transmission management table shown in FIG.
Of the plurality of music data representing the
It can be seen that the music data a1 of 1 is held in the data transmission server 52A specified by the address Ad1. The control unit 511 firstly determines each icon 72 based on the parameter table stored in the storage unit 513.
The data amount (sampling frequency) corresponding to the positional relationship between the pointer 77 and the pointer 77 is specified, and secondly, the address of the data transmission server 52 that holds the music data of this data amount is specified based on the transmission management table. Then, the address is notified to the communication terminal 10. And
The communication terminal 10 acquires the music data by accessing the data transmission server 52 indicated by the notified address.

<D-2: Operation of Fourth Embodiment> Next, the operation of the present embodiment will be described with reference to FIGS. However, of the operations of this embodiment that are common to those of the first embodiment, the description thereof will be simplified as appropriate.

First, when the music selection request is received from the communication terminal 10, the control unit 511 of the management server 51 transmits the image data representing the music selection screen 71 to the communication terminal 10 (step Sd1) and the pointer at that time. The distance between 77 and each icon 72 is acquired from the position detection unit 55 (step Sd2). Further, the control unit 511
For each song displayed as an icon on the song selection screen 71,
The sampling frequency according to the distance between the icon 72 of the music and the pointer 77 is specified (step Sd3).

Next, the control unit 511 refers to the storage unit 513 to specify the music data of the sampling frequency specified in step Sd3 for each music, and the data transmission server 52 that holds this music data. Is read out (step Sd4).
Then, the control unit 511 sets the address of each data transmission server 52 specified in step Sd4 to the communication terminal 10
(Step Sd5).

For example, now in step Sd2,
"F1 (= 44.1 kHz)" for song A, "f3 (= 10 kHz)" for song B and song C,
It is assumed that “0” is specified for the music D as the sampling frequency of each music data. At this time, the control unit 511 first refers to the transmission management table shown in FIG. 15 to obtain the music data a1 whose sampling frequency is “f1” for the music A and the sampling frequency “f3” for the music B. , And the music data c3 having a sampling frequency of "f3" for the music C are specified. Since the sampling frequency specified for the music D is "0", no music data is specified for this music D. Further, the control unit 511 stores the addresses associated with these pieces of music data in the storage unit 5
It is read from 13 (step Sd4). That is, for song A, the address “Ad
1 ”, the address“ Ad1 ”of the data transmission server 52A for the music B, and the address“ Ad2 ”of the data transmission server 52B for the music C are read and transmitted to the communication terminal 10 (step Sd5).

On the other hand, the control unit 11 of the communication terminal 10 causes the display unit 15 to display the music selection screen 71 based on the image data received from the management server 51, and then performs the operation shown in FIG. 17 at regular time intervals. To execute. That is, the control unit 11 detects the movement of the pointer 77 (step S
(e1; Yes), the coordinates of the pointer after the movement are detected (step Se2), and the coordinates are transmitted to the management server 51 (step Se3).

Next, the control unit 11 determines whether or not the address of the data transmission server 52 has been received from the management server 51 (step Se4). If it is determined that the music data has been received, the control unit 11 requests the music data from the data transmission server 52 specified by this address (step Se5). On the other hand, the data transmission server 52
Reads from the music data storage unit 521 for each part of the music data in response to the request from the communication terminal 10, and sequentially transmits this to the communication terminal 10. Control unit 11 of communication terminal 10
Receives the music data sequentially and causes the sound output unit 13 to output the music data as a musical sound (step Se6). When the addresses of the plurality of data transmission servers 52 are received, the control unit 11 executes the processing of steps Se5 and Se6 on a time-division basis for each data transmission server 52.

Next, the control section 11 determines whether or not the selection of the music data has been confirmed (step Se7). Then, when it is determined that the music data is determined, the control unit 11 requests the music data from the data transmission server 52 that holds the selected music data among the data transmission servers 52 indicated by the addresses received in step Se4. (Step Se8). Since the position of the pointer 77 when the music is selected should be closest to the icon 72 of the music, the music data having the largest data amount (that is, the sampling frequency is large) among the music data of the music. A request for the music data is made to the data transmission server 52 holding the.

On the other hand, the control unit 521 of the data transmission server 52 that has received this request reads all the requested music data from the music data storage unit 521 and transmits it to the communication terminal 10. Then, the control unit 11 of the communication terminal 10 stores the music data received from the data transmission server 52 in a storage device (not shown) (step Se9).

On the other hand, the control unit 511 of the management server 51
After executing the series of processes shown in FIG. 16, the process shown in FIG. 18 is executed at regular time intervals. That is, first,
The control unit 511 determines whether or not the coordinates of the pointer 77 transmitted from the communication terminal 10 in step Se3 of FIG. 17 have been received (step Sf1). If it is determined that the position is detected, the control unit 511 determines the distance between the coordinates of the pointer 77 and the icon 72, which are received this time, from the position detection unit 5.
It is acquired again from 15 (step Sf2). further,
The control unit 511 specifies the amount of data corresponding to the positional relationship acquired in step Sf2 for each song displayed as an icon on the song selection screen 71 (step S5).
f3), the address of the data transmission server 52 holding the music data of this data amount is read (step Sf).
4). Then, the control unit 511 transmits the read address to the communication terminal 10 (step Sf5). If it is determined in step Sf1 that the coordinates of the pointer 77 have not been received, the process ends without passing through steps Sf1 to Sf5.

When the address transmitted in step Sf5 of FIG. 18 is received (step Se4 of FIG. 17; Y).
es), the communication terminal 10 executes the processes of steps Se5 and Se6 described above. As a result, each icon 72
The data transmission server 5 that is the acquisition destination of the music data corresponding to the icon 71 according to the distance between the pointer 77 and the pointer 77.
2 will be changed appropriately. Therefore, the sampling frequency of each music data received by the communication terminal 10,
In other words, the data amount of each music data is
It will be changed at any time according to the distance between the pointer 77 and the pointer 77.

Under this embodiment, the same effect as that of the third embodiment can be obtained. In addition, in the present embodiment, since a plurality of music data representing the same target are distributed and stored in each data transmission server 52, each communication terminal 10 can centrally play music data from one server device. You can avoid the situation of getting. Therefore, there is an advantage that the processing load on the management server 51 and each data transmission server 52 can be reduced.

In the present embodiment, the case where the music data is targeted for transmission to the communication terminal 10 is illustrated, but the same applies when the image data is targeted for transmission as shown in the second embodiment. Can be adopted. That is, in this case, a plurality of image data representing the same image to be displayed in each image area 74 and having different data amounts may be dispersed and held in the plurality of data transmission servers 52.

<E: Modification> Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples, and various modifications can be made to the embodiments without departing from the spirit of the present invention. Modifications can be added. For example, the following may be considered as modifications.
In the following, the icon 72 and the image area 74 may be collectively referred to as “target body” or the pointer 77 may be referred to as “designator”.

<E-1: Modification 1> In each of the above-described embodiments, the server device 40 (management server 51) is provided with the position detection unit 45 (515) for detecting the positional relationship between the indicator and the target body. The configuration provided is illustrated, but this is the communication terminal 1
It may be set to 0. For example, the communication system according to the first embodiment may be configured as shown in FIG.

That is, the control unit 11 of the communication terminal 10
If an instruction to move the pointer 77 is given while the music selection screen 71 (the image selection screen 73 in the second embodiment) is displayed (step Sb1 in FIG. 7; Yes),
The position detector 45 detects the coordinate of the pointer 77 after the movement.
Output to. Further, the control unit 11 controls the pointer 77 calculated by the position detection unit 45 and each icon 72 (second icon).
In the embodiment, when the distance to the image area 74) is acquired, this distance is transmitted to the server device 40. The coordinates of each icon 72 may be stored in the target body position storage unit 45a of the position detection unit 45 based on the image data of the music selection screen 71 received in step Sa1 in FIG. . On the other hand, the control unit 41 of the server device 40
Acquires the distance between the pointer 77 and each icon 72 transmitted from the communication terminal 10, and the sampling frequency corresponding to each distance (resolution in the second embodiment).
To the data amount changing unit 46. Other operations are the same as those in the above embodiments. Also in this modification, the same effect as that of each of the above-described embodiments can be obtained.

<E-2: Modification 2> In the first embodiment, the data amount of each music data is changed by instructing the sampling frequency to the data amount changing unit 46. However, the data amount is changed. The method for changing the is not limited to this. For example, in the first embodiment, the music data is MIDI (Musical Instrument
nt Digital Interface) standard,
It is assumed that the music data of one music is composed of a plurality of channels corresponding to different performance parts. In this case, the control unit 41 of the server device 40
The number of channels of music data to be transmitted to the communication terminal 10 may be instructed to the data amount changing unit 46. That is, the data amount changing unit 46 selects only the designated number of channels from the music data supplied from the control unit 41 as the transmission target to the communication terminal 10 and outputs the selected channels to the control unit 41, while Discard the channel. Also with this configuration, the number of selected channels of the music data, that is, the data amount of the music data is changed according to the distance between the pointer 77 and the icon 72 of the music. The same effect as the form is obtained.

On the other hand, in the second embodiment, the data amount of the image data transmitted to the communication terminal 10 is made different according to the resolution, but the method for making the data amount different is limited to this. is not. That is, for example, the number of display gradations and the data format (bitmap format, JP
The EG format, the MPEG format), the compression rate of image data, and the like may be different depending on the positional relationship between the pointer 77 and the image area 74. Also in this case, the data amount of the image data is changed according to the positional relationship between the pointer 77 and the image area 74, so that the same effect as the second embodiment can be obtained. Further, the idea according to this modification may be adopted in the third or fourth embodiment.

As described above, in the present invention, the amount of data to be transmitted to the communication terminal 10 may be different depending on the positional relationship between the target object and the indicator. Further, in the above-described embodiment, the parameters that influence the data amount such as the sampling frequency and the resolution are specified according to the positional relationship between the target object and the indicator, but the data transmitted to the communication terminal 10 The data amount itself to be taken may be specified.

<E-3: Modification 3> In the first, third and fourth embodiments, music data representing a music piece and image data representing an image in the second embodiment are sent to the communication terminal 10. Although the example of sending the
The data transmitted to the communication terminal 10 is not limited to these. For example, data representing both music and images to be output in parallel (simultaneously) may be transmitted to the communication terminal 10. Further, instead of the music data representing the musical sound of the music, data representing the sound of a river or the cry of an animal can be adopted. In short, the display device (display unit 1
The data may be any data corresponding to the target displayed in 5) and used by the communication terminal 10 (that is, output in the form of an image or a sound).

<E-4: Modification 4> In the above embodiments and modifications, when four icons 72 are displayed on the music selection screen 71 and four image areas 74 are displayed on the image selection screen 73. Although the case of being displayed is illustrated, the number of icons 72 or image areas 74 to be displayed is not limited to this. For example, only one icon 72 may be displayed on the music selection screen 71, or only one image area 74 may be displayed on the image selection screen 73, or another number of icons 72 or image areas 74 may be displayed. It may be displayed.

In the second embodiment, the image is displayed in the image area 74, and the data amount of the image data is changed according to the positional relationship between the pointer 77 and each image area 74. Alternatively, the following may be performed. That is, the image selection screen 73 is divided into two areas, and a plurality of image areas 74 in which images based on image data are displayed are arranged in one area, while the other area is arranged.
A plurality of icons corresponding to each image area 74 may be displayed. That is, while the data amount of the image data is changed according to the positional relationship between each icon on the image selection screen 73 and the pointer 77, the image based on the image data after the data amount change is displayed in each image area 74. Thus, the image area 74 does not necessarily correspond to the target object in the present invention. Although only the second embodiment is mentioned here, the same can be said when the image data is transmitted to the communication terminal 10 in the third or fourth embodiment.

<E-5: Modified Example 5> In each of the above-described embodiments and modified examples, the case where the amount of data transmitted to the communication terminal 10 is set according to the distance between the indicator and the target object is exemplified. However, the factor for determining the data amount is not limited to the distance. For example, the orientation of the indicator with respect to the target body may be reflected in the determination of the data amount. Specifically, a character having front, rear, left, and right is used as an indicator, and when the target object is located in front of the indicator, the data amount of the data corresponding to the target object is set to be larger than the data corresponding to other target objects. On the other hand, for a target body whose indicator is turned back, the amount of data corresponding to the target body is smaller than that for other target bodies. As described above, the “positional relationship between the indicator and the target body” in the present invention is not limited to the distance between the indicator and the target body.

<E-6: Modification 6> The communication terminal 10 is not limited to the personal computer connected to the network 30. That is, a mobile communication terminal that communicates with a wireless base station in the network 30 via a wireless channel can also be used as the communication terminal in the present invention. Examples of such a mobile communication terminal include a mobile phone, PHS (registered trademark), PDA (Pers
onal Digital Assistance) and the like. That is, the “communication terminal” in the present invention may be a device that communicates via a network and can display an image of the indicator and the target object.

In the first to third embodiments, the means (the music data storage section 43 or the image data storage section 44) for storing the data to be transmitted to the communication terminal 10, the indicator and the target object. Although a configuration in which a single server device 40 is provided with means (data amount changing unit 46) for adjusting the data amount in accordance with the positional relationship of the above is illustrated, these may be provided in a plurality of server devices that are separated from each other. The functions may be distributed and arranged.

<E-7: Modification 7> In the fourth embodiment, the management server 51 specifies the data transmission server 52 to which the communication terminal 10 should request data. The communication terminal 10 may have a function. That is, the communication terminal 10 specifies the data transmission server 52 that stores the data amount of the data corresponding to the positional relationship between the target object and the indicator based on the transmission management table shown in FIG. It may be configured to request data from the transmission server 52.

<E-8: Modification 8> The present invention can also be implemented as a program executed by the server device 40 when data is transmitted from the server device 40 to the communication terminal 10. That is, the program adopting the first feature of the present invention causes a computer, which communicates with a communication terminal, to determine the data amount of the data to be transmitted to the communication terminal to the positional relationship between the target object and the indicator. Accordingly, the function of changing the data amount and the function of transmitting the data whose data amount has been changed in this process to the communication terminal are realized. In addition, the program adopting the second feature of the present invention causes a computer to display a data amount corresponding to a positional relationship between a target object and an indicator among a plurality of data items representing the same target and having different data amounts. The function of specifying the data and the function of transmitting the specified data to the communication terminal are realized. Furthermore, the program adopting the third feature of the present invention is configured to cause a computer to store a data amount corresponding to a positional relationship between a target object and an indicator among a plurality of data items representing the same object and having different data amounts. The function of specifying the data transmitting device that stores the data and the function of instructing the specified data transmitting device to the communication terminal as the data transmitting device for which the communication terminal should request the data are realized.

The present invention can also be implemented as a computer-readable recording medium recording the above program. As this recording medium, in addition to a portable magnetic disk or optical disk, a fixed magnetic disk (hard disk device) or a semiconductor memory can be considered.

[0088]

As described above, according to the present invention,
It is possible to reduce network traffic without unduly impairing the quality of the sound or image of interest to the user.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a communication system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a communication terminal according to the same embodiment.

FIG. 3 is a diagram showing contents of a music selection screen in the same embodiment.

FIG. 4 is a block diagram showing a configuration of a server device in the same embodiment.

FIG. 5 is a diagram showing the contents of a parameter table in the same embodiment.

FIG. 6 is a flowchart showing an operation of the server device in the embodiment.

FIG. 7 is a flowchart showing an operation of the communication terminal in the same embodiment.

FIG. 8 is a flowchart showing an operation of the server device in the embodiment.

FIG. 9 is a diagram showing the contents of an image selection screen in the second embodiment of the present invention.

FIG. 10 is a diagram showing the contents of a parameter table in the same embodiment.

FIG. 11 is a diagram showing stored contents of a music data storage unit in the third embodiment of the present invention.

FIG. 12 is a block diagram showing a configuration of a communication system according to a fourth exemplary embodiment of the present invention.

FIG. 13 is a block diagram showing a configuration of a data transmission server according to the same embodiment.

FIG. 14 is a block diagram showing a configuration of a management server in the same embodiment.

FIG. 15 is a diagram showing the contents of a transmission management table in the same embodiment.

FIG. 16 is a flowchart showing an operation of the server device in the embodiment.

FIG. 17 is a flowchart showing an operation of the communication terminal in the embodiment.

FIG. 18 is a flowchart showing an operation of the server device in the embodiment.

FIG. 19 is a block diagram showing a configuration of a communication system according to a modified example of the present invention.

[Explanation of symbols]

10 ... communication terminal, 11 ... control section (transmission means, position acquisition means, data identification means), 12 ... communication section (transmission means), 13 ... sound output section, 14 ... operation section, 15 ... Display unit, 30 ... Network, 40 ... Server device (data transmission device), 41 ... Control unit, 42 ... Communication unit, 4
3 ... Music data storage unit (storage unit), 44 ... Image data storage unit (storage unit), 45 ... Position detection unit (position detection unit), 45a ... Target body position storage unit, 46 ... Data amount Change unit (data amount change means), 51 ... Management server (data transmission management device), 511 ... Control unit, 512 ...
... communication section, 513 ... storage section, 514 ... image data storage section, 515 ... position detection section, 52 (52A, 52B,
52C) ... Data transmission server (data transmission device), 5
22 ... control unit, 523 ... communication unit, 71 ... song selection screen, 72 ... icon (target object), 73 ... image selection screen, 74 ... image area (target object), 77 ... pointer ( Indicator).

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Claims (18)

[Claims] 1. An apparatus for transmitting data to a communication terminal having a display device for displaying an image, comprising: storage means for storing data to be transmitted to the communication terminal; and the storage means stored in the storage means. The data amount of the data is displayed to the user of the communication terminal as the position at which the target object corresponding to the data is displayed on the display device and the position at which an indicator for indicating the target object is displayed on the display device. A data amount changing means for changing the data amount according to the relationship with the designated position; and a transmitting means for transmitting the data after the data amount is changed by the data amount changing means to the communication terminal. Characteristic data transmission device. 2. A plurality of target bodies are displayed on the display device, while the storage means stores, for each target body, the data corresponding to the target body, and the data amount changing means stores the target body. The data transmission device according to claim 1, wherein, for each data corresponding to the body, the data amount is changed to a data amount according to the positional relationship between the target body and the indicator. 3. A device for transmitting data to a communication terminal equipped with a display device for displaying an image, which stores a plurality of data representing the same target and having different data amounts from each other. Means, among the plurality of data representing the same target, the position where the target object corresponding to the target is displayed on the display device, and an indicator for pointing the target object is displayed on the display device. Data specifying means for specifying data having a data amount corresponding to a position specified by the user of the communication terminal as a position, and transmission for transmitting the data specified by the data specifying means to the communication terminal And a means for transmitting data. 4. A plurality of target bodies are displayed on the display device, while the storage means stores, for each target body, the plurality of data representing an object corresponding to the target body. 4. The specifying unit specifies, for each of the plurality of data representing an object corresponding to the target object, data having a data amount according to a positional relationship between the target object and the indicator. The data transmission device described. 5. A position detecting means for acquiring the display position of the indicator on the display device from the communication terminal and detecting the relationship between the display position of the indicator and the display position of the target object on the display device. The data transmission device according to any one of claims 1 to 4, further comprising: 6. The target object and the pointer detected by the position detecting means from the communication terminal, which comprises a position detecting means for detecting a display position relationship between the target object and the indicator on the display device. The data transmission device according to claim 1, further comprising a position acquisition unit that acquires a positional relationship with a child. 7. The data stored in the storage means is data representing at least one of a sound to be output by a sound output device included in the communication terminal and an image to be displayed by the display device. The data transmission device according to any one of claims 1 to 6, characterized in that: 8. A system for transmitting data to a communication terminal equipped with a display device for displaying an image, comprising a plurality of data transmitting devices capable of communicating with the communication terminal, the data transmitting device representing the same object and the data amount. A plurality of data transmission devices that store a plurality of data different from each other, and among the plurality of data representing the same target, the position at which the target object corresponding to the target is displayed on the display device, and the target object An indicator for instructing is specified and specified as the data transmission device that stores the data amount of data according to the relationship with the position specified by the user of the communication terminal as the position displayed on the display device. A data transmission device, comprising: a data transmission management device that instructs the communication terminal as a data transmission device from which the communication terminal should request data. Data transmission system. 9. The display device displays a plurality of target bodies, while the plurality of data transmission devices store, for each target body, the plurality of data representing an object corresponding to the target body. The data transmission management device stores, for each of the plurality of data representing an object corresponding to the target body, the data transmission device that stores data having a data amount corresponding to a positional relationship between the target body and the indicator. It specifies, It specifies.
The data transmission system described in. 10. Management of transmission of data from a plurality of data transmission devices which store the same object and have different data amounts and which store different data to the communication terminal having a display device for displaying an image. In the device, among a plurality of data representing the same target, a position at which a target object corresponding to the target is displayed on the display device and an indicator for pointing the target object are displayed on the display device. The data transmission device that stores the data amount of data according to the relationship with the position designated by the user of the communication terminal as the position to be specified, and the communication terminal should request the data from the specified data transmission device. A data transmission management device comprising a control means for instructing the communication terminal as a data transmission device. 11. A data transmission device for transmitting data to a communication terminal equipped with a display device for displaying an image, wherein the data amount of the data stored in the storage means is a target corresponding to the data in the storage device. Change the data amount according to the relationship between the position where the body is displayed and the position designated by the user of the communication terminal as the position at which the indicator for pointing the target body is displayed on the display device, A data transmitting method comprising transmitting the data after the data amount is changed to the communication terminal. 12. A data transmitting device for transmitting data to a communication terminal equipped with a display device for displaying an image, stores a plurality of data representing the same object, and a plurality of data having mutually different data amounts. While being stored in the means, a position where the target object corresponding to the target is displayed among the plurality of data representing the same target and an indicator for pointing the target object are displayed on the display device. Data having a data amount corresponding to the relationship with the position designated by the user of the communication terminal is specified as the position, and the specified data of the data stored in the storage means is transmitted to the communication terminal. A data transmission method characterized in that 13. A method for transmitting data to a communication terminal equipped with a display device for displaying an image, wherein a plurality of data transmission devices communicable with the communication terminal represent the same target and have a mutual data amount. While storing a plurality of different data in the data transmission management device capable of communicating with the communication terminal, the target object corresponding to the target is displayed on the display device among the plurality of data representing the same target. location and,
An indicator for indicating the target object is specified as the position displayed on the display device, and the data transmission device that stores data of a data amount corresponding to the position specified by the user of the communication terminal is specified. , The specified data transmission device is instructed to the communication terminal, and the data transmission device which has received the request transmitted from the communication terminal based on the instruction from the data transmission management device is stored in the communication terminal by the storage. A method for transmitting data, comprising transmitting data. 14. Managing transmission of data from a plurality of data transmission devices that store a plurality of data that represent the same target and have mutually different data amounts to the communication terminal that includes a display device that displays an image. In the method, a computer capable of communicating with the communication terminal indicates a position where a target object corresponding to the target is displayed on the display device among the plurality of data representing the same target, and the target object. Specifies the data transmission device that stores the data amount of data according to the relationship with the position specified by the user of the communication terminal as the position displayed on the display device, and identifies the specified data transmission device. A data transmission management method, wherein the communication terminal instructs the communication terminal as a data transmission device that should request data. 15. A computer for communicating with a communication terminal having a display device for displaying an image, the amount of data to be transmitted to the communication terminal, a target object corresponding to the data in the display device. And a function of changing the data amount according to the relationship between the position where is displayed and the position designated by the user of the communication terminal as the position where the indicator for pointing the target object is displayed on the display device, A program for realizing a function of transmitting data after the data amount is changed by the data amount changing function to the communication terminal. 16. Communication is performed with a communication terminal including a storage unit that stores a plurality of pieces of data representing the same object and having mutually different data amounts, and including a display device that displays an image. Among the plurality of data representing the same target, the computer performs the position where the target body corresponding to the target is displayed and the position where the indicator for pointing the target body is displayed on the display device. A function of specifying data having a data amount according to a relationship with a position designated by the user of the communication terminal, and transmitting the specified data among the data stored in the storage means to the communication terminal A program for realizing functions and functions. 17. Managing transmission of data from a plurality of data transmission devices that store a plurality of data that represent the same target and have mutually different data amounts to the communication terminal that includes a display device that displays an image. Among the plurality of data representing the same target, the computer displays a position where the target object corresponding to the target is displayed on the display device and an indicator for pointing the target object on the display device. The function of specifying the data transmission device that stores the data amount of data according to the relationship with the position specified by the user of the communication terminal as the position, and the communication terminal requests the specified data transmission device for data. A program for realizing a function of instructing the communication terminal as a data transmission device to be performed. 18. A computer-readable recording medium in which the program according to any one of claims 15 to 17 is recorded.