JP2002163182A - Portable terminal, information distribution system using the same, and information distribution method - Google Patents

Abstract

(57) [Summary] [Problem] To provide a terminal technology capable of distributing contents without concentrating traffic. A terminal stores a content and list information thereof, a detection unit that communicates the list information with another terminal and detects a terminal that does not have the same content as itself.
And transmits the content of the terminal itself to the detected terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a technique for sequentially transmitting information from terminal to terminal.

[0002]

2. Description of the Related Art Conventionally, mobile phones and PDAs (Personal Di
In a terminal called “gital assistance”, data (content information) is downloaded into the device, or information is reproduced by connecting online. Japanese Patent Application Laid-Open No. 2000-99474 describes a portable terminal technology that has a communication function and an information management function, and enables information acquired via the Internet to be stored and used in the terminal. I have. Also, recently, the position of the terminal itself is determined using the position of the wireless base station communicating with the portable terminal, and the local information narrowed down based on the position information of the terminal is provided to the terminal owner. . However, in each case, the terminal acquires the content information via the base server that is the information provider.

[0003]

In the above-mentioned prior art, for example, when trying to exchange content information with a terminal via the Internet, the terminal needs to be connected to an Internet provider, and hardware necessary for protocol support is required. Wear cost and communication cost are required.
Therefore, the exchange of content information is often limited to content information that has a clear merit for the user, and it is difficult to independently transmit and receive content information that is unclear to the user, such as advertisements and event information. Was. In addition, since all terminals acquire content information from a specific base server, when a large amount of information is to be distributed, a large-capacity server or a communication path is required, and equipment costs increase. The problems of the present invention are, in view of the state of the prior art, that (1) information can be distributed without concentration of communication load, and (2) various contents information can be obtained easily and at low cost. . An object of the present invention is to provide a technique capable of solving such a problem.

[0004]

According to the present invention, in order to solve the above-mentioned problems, terminal apparatuses connected by communication means such as the Internet or wireless communication are made to automatically exchange content information held by each other. . Specifically, (1) As a portable terminal capable of storing and reproducing data,
Storage means for storing the content and its list information, and detection means for communicating the list information with another terminal and detecting a terminal that does not have the same content as the terminal itself. Is transmitted. (2) As a portable terminal capable of storing and reproducing data,
Storage means for storing the contents and the list information thereof, and communication means for communicating the list information with another terminal, so as to receive the different contents from a portable terminal having contents different from itself. Configuration. (3) As a portable terminal capable of storing and reproducing data,
Storage means for storing content, its list information and the content acquisition condition information, and a terminal capable of exchanging the list information and the content acquisition condition information with another terminal and not having the same content as itself and capable of acquiring the content Detecting means for detecting the content, and transmitting the content of the terminal itself to the detected terminal. (4) In the above (1) or (3), the detection unit is configured to detect a terminal other than the terminal that transmitted its own content immediately before. (5) As a portable terminal capable of storing and reproducing data,
Storage means for storing list information in which contents and a disappearance point for each of the contents are set; erasing means for erasing the corresponding contents after the disappearance point; and communicating the list information with another terminal and remaining without being deleted And detecting means for detecting a terminal that does not have the same content as the content, and transmitting the content to the detected terminal. (6) As a portable terminal capable of storing and reproducing data,
Storage means for storing the content and its list information; display means for displaying the list information of the content; and specific contents of the content and the list information according to the deletion flag prepared for each content. Erasing means for erasing from the display, and detecting means for communicating the list information with another terminal and detecting a terminal that does not have the same content as the remaining content that has not been erased, comprising: When the content is transmitted, the deletion flag is set when an operation of deleting the content is performed, the deletion flag is reset when the content is received, and a list of the content whose deletion flag is reset is displayed on the display means. It is configured to be displayed. (7) In the above (1), (3), (4), (5) or (6), when the portable terminal receives the right information to receive distribution of the content from the detected terminal, The content is transmitted to the detection terminal. (8) In the above (2), the portable terminal is configured to hold reproduction right information and reproduce the contents within the reproduction right range among the received contents. (9) In any one of the above (1) to (8), the storage means is constituted by an IC card. (10) As an information distribution system, the portable terminal according to any one of (1) to (9) is configured to transmit and receive contents by using either or both of the transmitting terminal and the receiving terminal. (11) As an information distribution method for distributing content information from terminal to terminal, a step of storing content information and its index information, and a terminal that communicates the stored index information with another terminal and does not have the same content information as itself. And transmitting the content information of the terminal to the detected terminal.
Distribute content information.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention, and show a configuration example of a content information distribution system including a wireless content transmitting / receiving device and a wireless content server. The wireless content transmitting / receiving device has a function of downloading specified content information from a content information group stored in a wireless content server. The downloaded content information is stored in the wireless content transmitting / receiving device, and is reproduced as video or sound depending on the content. FIG. 1 shows a configuration example of the wireless content transmitting / receiving device 100 and the wireless content server 130. As shown in FIG. 1, the wireless content transmitting / receiving apparatus 100 includes a CPU 102, a wireless transmitting / receiving unit 104, a data storage unit 106, an image conversion display unit 114, a liquid crystal display unit 116, an audio conversion / reproduction unit 118,
It comprises a speaker 120, a keyboard 122 and a bus 124. CPU 102 is a wireless content transmitting / receiving device 10
0 is controlled and control for realizing the function is performed. The wireless transmission / reception unit 104 performs communication between the wireless content transmission / reception device 100 and another device. The data storage unit 106
A program 112 for controlling the wireless content transmitting / receiving apparatus 100, content information 110, a list 108 thereof, and the like are stored. When the content information 110 is image data, the image conversion display unit 114 converts the content information 110 into a format that can be displayed on the liquid crystal display unit 116 as a display device. Similarly, the voice conversion / reproduction unit 118
If the content information 110 is audio data, it is converted into a format that can be output to the speaker 120. The operation for the wireless content transmitting / receiving apparatus 100 is performed by the keyboard 122.
This is performed using These components are connected to a bus 124 and are controlled by the CPU 102 via the bus 124. The wireless content transmitting / receiving apparatus 100 also includes a power supply unit and the like, but illustration and description thereof are omitted.

[0006] As shown in FIG. 1, the wireless content server 130 includes a CPU 132, a wireless transmission / reception unit 134, a data storage unit 136, an image conversion display unit 144, and a liquid crystal display unit 14.
6, audio conversion / reproduction unit 148, speaker 150, keyboard 152, Internet communication unit 154, bus 156
It is comprised including. The CPU 132 controls the wireless content server 130 and performs control for realizing its function. The wireless transmission / reception unit 134 performs physical communication between the device 130 and another device. The data storage unit 136 stores a program 142 for controlling the wireless content server 130.
And a non-volatile storage device for storing the content information 140 and the list 138 thereof. When the content information 140 is image data, the image conversion display unit 144 converts the content information 140 into a format that can be displayed on the liquid crystal display unit 146 as a display device. Similarly, the sound conversion / reproduction unit 148
If the content information 140 is sound data, it is converted into a format that can be output to the speaker 150. The operation on the wireless content server 130 is performed using the keyboard 152. The Internet communication unit 154 realizes a communication connection between the wireless content server 130 and the Internet 170. These components are connected to a bus 156, and are controlled by the CPU 132 via the bus 156. Wireless content server 13
0 includes a power supply unit and the like in addition to this, but illustration and description thereof are omitted. In the case of the configuration of FIG.
Wireless transmitting / receiving section 104 of wireless content transmitting / receiving apparatus 100
And the wireless transmission / reception unit 134 of the wireless content server 130
Are connected by wireless communication, thereby exchanging information. The transfer of the content information from the wireless content server 130 to the wireless content transmitting / receiving apparatus 100 is also performed through this route. In the case of this configuration, the wireless content transmitting / receiving device 100
Communication with the Internet 170 can also be performed via the rnet communication unit 154.

FIG. 2 shows an example of a content information distribution system composed of a plurality of wireless content transmission / reception devices.
In FIG. 2, two wireless content transmitting / receiving apparatuses (A)
100a and (B) 100b are placed close to each other. The wireless transmission / reception unit 104a of the wireless content transmission / reception device 100a and the wireless transmission / reception unit 104b of the wireless content transmission / reception device 100b are connected by wireless communication, and information is exchanged. As the wireless communication means, for example, Blue
Means such as tooth may be used. When three or more wireless content transmitting / receiving apparatuses 100 are provided close to each other, two of the wireless content transmitting / receiving apparatuses 100 are connected, and the combination of the connections is sequentially changed.

FIG. 3 shows a wireless content transmitting / receiving apparatus 100.
2 shows a configuration example of the front part of the present invention. In the case of this configuration, the liquid crystal display unit 1
A list information (file list) of the content information is displayed on the screen 16, and a selection operation or the like is performed with the keyboard 122.

FIG. 4 shows a wireless content transmitting / receiving apparatus 100.
1 shows the software configuration. Each element is stored in the program 112 of the data storage unit 106 of the wireless content transmitting / receiving apparatus 100 of FIG. The software is hierarchically configured, and an OS 20 that manages the operation of the software
2, a playback control 204 for providing a user I / F (interface) at the time of content information playback to an upper layer, a local communication management 206 for managing communication between the wireless content transmitting / receiving apparatuses 100, and a content information exchange procedure. Exchange 208, image and sound reproduction 210 for image and sound reproduction processing, server 13
There is a content reception 214 that downloads the content 110 from 0. There is general control 216 as software for controlling activation of the processing software, and the general control 216 activates the processing software based on a user operation. Wireless content transmitting / receiving device 100
The software for controlling the hardware includes: an audio reproduction DRV 218 for controlling the audio conversion / reproduction unit 118 to reproduce the audio; an image DRV 220 for controlling the image conversion / display unit 114 to reproduce the image; Data management DR for managing access to stored data
V222, a wireless communication DRV 224 that manages communication of the wireless transmission / reception unit 104, and a keyboard DRV 226 that senses a keyboard state. The wireless content transmitting / receiving apparatus 100 transmits these programs 112 to the CP.
The U102 executes the content reproduction and data exchange when executed.

FIG. 5 shows a software configuration of the wireless content server 130. Each element corresponds to the program 1 in the data storage unit 136 of the wireless content server 130 in FIG.
42. The software is configured in a hierarchical manner, and mainly includes an OS 302 for managing the operation of the software, a reproduction control 304 for providing a user I / F at the time of reproducing the content information to an upper layer, and a communication with the wireless content transmitting / receiving apparatus 100. Terminal communication management 306 to manage,
A content transmission 308 for executing a procedure for transmitting content information to the wireless content transmitting / receiving apparatus 100, an image for performing image and audio playback processing, an audio playback 310, and the wireless content transmitting / receiving apparatus 100 communicating with the Internet 170 via the wireless content server 130. There is a GW communication management 314 that implements a gateway function. There is an overall control 316 as software for controlling activation of the processing software, and the overall control 316 activates the processing software based on a user operation. The software for controlling the hardware of the wireless content server 130 includes a sound reproduction DRV 318 that controls the sound conversion and reproduction unit 148 to reproduce sound, and the image conversion display unit 14.
DRV 320 that controls access to the data stored in the data storage unit 136, a data management DRV 322 that controls access to data stored in the data storage unit 136, a wireless communication DRV 324 that manages communication with the wireless transmission / reception unit 134, and senses the state of the keyboard. Keyboard DRV326, Interne
Each driver of the Internet communication DRV328 that manages the t communication. The wireless content server 130 realizes content reproduction and data exchange by the CPU 132 executing these programs 142.

Hereinafter, a description will be given of the structure of data constituting a content according to the present invention. FIG. 6 shows an example of the data structure of the content list 108 of the content 110 handled by the wireless content transmitting / receiving apparatus 100. In the case of this example, the content list 108 is a group of eleven tables and holds information for managing the content 110. The content list includes 1) the content 110 received from the wireless content server 130 in the past, and 2) another wireless content transmitting / receiving apparatus 1 in the past.
The management information of the content 110 received from 00, and is managed independently of the content 110 itself. For example, even if the content 110 has already been deleted from the terminal, the entry of the content 110 on the content list 108 is retained until the date and time of disappearance. The content list 108 includes content ID 501, name 503, U
RL (Uniform Resource Location) 505, distribution date and time 5
07, expiration date and time 509, type information 511, attribute 513,
Each item is composed of a reproduction rate 515, a propagation count 517, a deletion flag 519, and a link 520 to data. The type information 511 includes items of a physical type 521 and an information category 523. The attribute 513 includes items of a region 525, an update 527, a link 529, and a target 531. The ID 501 is an identification number uniquely assigned to the content 110. The name 503 is the name of the content, and the URL 505 is a reference address when the original data of the content 110 is on the Internet 170. The distribution date and time 507 is the content 11
0 indicates the date and time when the distribution started, and the expiration date and time indicate the erasure time for erasing the content 110 and the corresponding item in the content list 108. The type information 511 indicates the physical and logical types of the content. Physical type information 521
Indicates an information encoding method, and the information category 523 is
Indicates the content of the information.

An example of the information category 523 and contents corresponding to the information category 523 will be described below. (Information category 523) (Example of content content) General information News, weather forecast CM character advertisement, video advertisement Music music video Video clip attribute 513 holds information related to the content exchange operation. The region 525 indicates whether distribution (distribution) is possible or not depending on the region. Update 527 uses the same ID, like news
At 501, it is indicated whether information whose contents have been updated can exist. A link 529 indicates whether or not the same content 110 can be obtained via the Internet 170. The target 531 indicates the type of the receiver assumed by the information.

An example of possible values for each item of the attribute 513 is shown below. (Attribute item) (Example of value) Region Tokyo metropolitan area, Tokyo station, Japan, No region dependency Update Update available, No update Link Internet reference possible, Internet reference not available Target Male, female, teen, working adult, Japanese, Korean People, Chinese, United States The following describes the flow of software related to content reception and exchange of the content transmitting / receiving device. FIG. 7 shows a processing example when the content 110 is received from the server 130. In FIG. 7, the content reception 214 is called by the overall control 216 when the overall control 216 determines that the user has operated the keyboard 122 and has instructed reception of the content 110. The next communication mode set in the flow of FIG. 7 is as shown in FIG.
When a content is exchanged between the two wireless content transmitting / receiving apparatuses 100, a variable set in the program 112 sets whether or not the user should become a transmitting side. When the next communication mode 701 is set to “master”, control is performed so as to be a transmission side, and when it is set to “slave”, control is performed so as to be a reception side. This control will be described later. The content receiving process 214 establishes a wireless connection with the wireless content server 130 in step S601, and receives an information item corresponding to the content list 108 of the content 110 from the wireless content server 130 in step S603. The content main body is received and stored in the data storage unit 106 in step S605. Then, in step S607, the content of the next communication mode 701 is set to “m
The communication is disconnected from the wireless content server 130 in step S609, and the content receiving process 214 ends. As described above, the content 110 is downloaded to the wireless content transmitting / receiving device 100.

FIG. 9 shows an example of an exchange process when exchanging content between two wireless content transmitting / receiving apparatuses 100. In FIG. 9, in step S801, a connection is established after waiting for another wireless content transmitting / receiving apparatus 100 to approach. This processing will be described later with reference to FIG.
Next, in step S805, it is determined which of the two communicating devices becomes the content transmission side. The result is determined in step S805, and if the own device is “master” on the transmission side, in step S807, a difference list 901 that is a list of contents that are present in the own device but not in other devices is created. The difference list 901
Is a variable placed in the program area as shown in FIG. 10, and has the same items as the content list 108. After creating the difference list 901, the content 110 corresponding to the difference list is transmitted in step S 809, and the content of the next communication mode 701 is changed to “Slav” in step S 811.
e ”, the communication is turned off in step S817, and the process ends. On the other hand, as a result of the determination in step S805,
If the own device is “slave” on the receiving side, the content list 108 of the own device is transmitted to the transmitting terminal 100 in step S812, and the content 110 transmitted from the transmitting terminal 100 is received in step S813. ,
In step S815, the content of the next communication mode 701 is set to "master", and in step S817, the communication is turned off and the process ends. In the connection establishment step S801 of the content exchange 208, control is performed so that the same terminals 100 do not connect with each other. FIG. 11 shows an operation example thereof. In FIG. 11, in a connection establishment step S801, a connection partner is detected in step S901. This is the same procedure as that of the IEEE 802.11 Adhoc network connection. Then, step S90
At 3, it is determined whether or not the connection partner is the same as the partner connected immediately before. If it is the same partner as the last time, step S9
At 05, it is determined whether or not the connection partner is the same as the partner connected the last time. If it is determined in step S905 that the connected party is the same as the connected party two times before, the process returns to step S901, and the connection partner is detected again. Step S903 or Step S
If it is determined in step 905 that the connection is different from the previous or second previous connection partner, step S801 is terminated while maintaining the connection with the detected partner, and the master / s shown in FIG.
The process moves to the love selection step S803. That is,
If the terminal is different from the communication partner up to that point or the terminal connected just before, the processing of the content exchange 208 is executed. FIG. 12 shows an example of the selection step.

In FIG. 12, in master / slave selection step S803 of content exchange 208,
Decide which of the two communicating devices will be the content sender. In step S1001, it is determined whether the value of the next communication mode 701 of the own apparatus (own apparatus) is “master”. If “master”, step S100
3, the value of the next communication mode 701 of the connection partner is “mast
er ”. Here, the other party says "mast
If it is not “er”, the own apparatus sets “m” in step S1007.
aster ”, that is, the connection partner is notified of becoming the transmission side, and the step S803 ends. On the other hand, in step S1001, the value of the next communication mode 701 of the own device is “m”.
If not, the flow proceeds to step S1009, and the value of the next communication mode 701 of the connection partner is set to “mast”.
er ”. Here, the other party is called "mas
If it is "ter", in step S1011 it waits for notification that the connection partner is "master", that is, the sender, and receives the notification, and then ends step S803. If the own device and the communication partner have the same value of the next communication mode 701, step S1003 or S1009
Then, control goes to a step S1005. In this case, in the physical communication connection when a connection partner is detected in the step of connection establishment S801 described in FIG. 11, it is determined whether or not the own device is a transmission side. The process shifts to step S1007, and the own device
r ", that is, notify the connection partner that it will become the sender,
Step S803 ends. If the own device is the receiving side in step S1005, it waits for notification that the connection partner is "master", that is, the transmitting side, in step S1011.
3 is ended. As described above, the own device becomes “master”
That is, it is determined whether to be the content transmission side or “slave”, that is, the content reception side. When the transmitting-side terminal 100 is determined in step S803,
In step S807, the transmitting terminal 100 creates a difference list 901 that is a list of contents 110 to be sent to the other party. The procedure will be described with reference to FIG.

FIG. 13 shows an example of a procedure for creating the difference list 901. In step S1101, the content list 108 of the connection partner (reception side) is acquired, and in step S1103.
In the content list 108 of the other party,
The content 110 that does not include D501 is included in the difference list 9
01, and in step S1105, the link 520 to the content 110 in the content list 108 of the partner device is set.
It is checked whether there is any content 110 for which no value has been set and the device 110 has already downloaded the content 110, and adds it to the difference list 901.

FIG. 14 shows that after the difference list 901 is created in step S807, the content 110 is transferred to the terminal 100 on the receiving side.
Here is an example of the procedure for transmitting to a user. Step S1201
Then, the difference list 901 is transmitted to the terminal 100 on the receiving side. Next, the content 11 described in the difference list 901
0 is transmitted to the receiving terminal 100 in step S1205. In step S1207, the entry of the transmitted content 110 is deleted from the difference list 901 until the difference list 901 becomes empty (determination in S1203). , Step S1207 is repeated.

On the other hand, an example of a processing procedure when the receiving terminal 100 receives the content 110 of the difference list transmitted by the transmitting terminal will be described with reference to FIG. In the difference content receiving step S813, the difference list 901 created by the transmitting side in step S1301 is received, and in step S1303, the data is added to the content list 108 of the own device. That is, only the content list is added before the content 110 is received. At this time, the reproduction rate 515 of the item and the deletion flag 519 are initialized to 0.
Initialize to The number of times of propagation 517 is stored by adding 1 to the value at the time of reception. Thereafter, in step S1307, the content 110 is sequentially received, stored in the data storage unit 106, and the process of deleting the received content from the difference list 901 is repeated in step S1309, so that the difference list becomes empty (the result of the determination in S1305). ) And step S813 ends.

The processing flow of the content exchange processing 208 has been described above with reference to FIGS. 9 to 15. However, wireless communication may be interrupted during these series of communication. When communication is interrupted, the wireless communication DRV 224 notifies the general control 216 that communication is not possible. In this case, overall control 2
16 stops the execution of the procedure of the content exchange 208 and executes the processing 1401 at the time of communication interruption. FIG. 16 shows a procedure example of the communication interruption process.

In FIG. 16, in step S1403, the data of the content 110 is read to check the consistency of each data, and if there is incomplete data, it is deleted. And
In step S1405, the content list 108 corresponding to the content 100 deleted in step 1403
Is set to NULL, that is, no data, and the communication interruption processing 1401 ends.

FIG. 17 is an explanatory diagram of an example of a processing procedure at the time of content reproduction and an example of a content list update processing related to content exchange performed at that time.
The reproduction of the content is performed by the image and sound reproduction 210 shown in FIG.
Do with. In the image and sound reproduction 210, step S160
In step 1, content is selected. As shown in FIG. 3, the reproducible content 110 is displayed on the liquid crystal display unit 116 and selected with the keyboard 122. The terminal 100 has user attribute data 1602 (not shown) corresponding to the target 531 information of the content list 108, and when displaying a list of reproducible contents 110, the value of the target 531 that matches the user attribute data 1602. Are sequentially displayed in the content list 108 having. At this time, the entry of the content list 108 with the deletion flag 519 set is not displayed. next,
It is determined in step S1603 whether or not reproduction has been instructed. If the reproduction is to be performed, the content 110 is reproduced in step S1605. The reproduction can be interrupted in the middle, and after the reproduction is completed, in step S1607, the reproduction rate 515 indicates which part of the entire content 110 has been reproduced.
Write to. Thereafter, the process shifts to step S1609.
If reproduction has not been instructed in step S1603, the flow shifts to step S1609. In step S1609, a selection as to whether or not to delete the content 110 is accepted, and the result is determined. If deletion of the content has been selected, a flag is set in the deletion 519 of the content list 108 of the content 110 in step S1611. Thereafter, in step S1613, the disappearance date and time information of the content list is confirmed, and the content 110 whose disappearance date has passed and the entry of the content list 108 are deleted. After the end of step S1613, the image and sound reproduction 210 ends. When the user instructs to delete the content information, the content information is deleted from the list of the content information and is not presented to the user again. On the other hand, data remains in the terminal, and even if the user deletes the information after browsing it, it is possible to transfer the data to another terminal that does not yet have the information.

FIG. 18 shows an operation example of content exchange by the wireless content transmitting / receiving apparatus 100 and the wireless content server 130. The example of FIG. 18 is an example of a case where there are three wireless content transmitting / receiving apparatuses 100 having different content holding states.
0b is a wireless content transmitting / receiving apparatus having the content X110x, and 100c is a wireless content transmitting / receiving apparatus having the content Y110y. In FIG. 18, when the wireless content transmitting / receiving apparatus 100a downloads the content A110a from the server 130, the value of the next communication mode 701 becomes “Master”. Thereafter, when the content exchange processing of FIG. 9 is performed, a state in which a connectable partner is detected in step S801. Step S80
When communication becomes possible with the wireless content transmitting / receiving apparatus 100b in a state where a connectable partner is detected in step S80, step S80
1 to S803, the terminal 100a and the terminal 100b
Decide what will be the sender between. Assuming that the value of the next communication mode 701 of the terminal 100b is "Slave", as shown in FIG.
0a, and the terminal 100a
b, the content A110a is transmitted. Meanwhile,
The value of the next communication mode 701 of the terminals 100a and 100b is rewritten in step S811 or step S815, and the terminal 100a sets “Slave”,
The terminal 100b is set to “Master”. In this state, if the terminals 100a and 100b can communicate,
Again, the procedure of the content exchange 208 of FIG. 9 is executed,
This time, the terminal 100b becomes the transmitting terminal of the content X110x, and transmits the content X110x from the terminal 100b to the terminal 100a. Thereafter, when the content exchange processing of FIG. 9 is executed again, the terminal 100a, 100b, which is the communication partner of the last two previous times, does not establish a connection, and the other terminal, according to the procedure shown in FIG. Repeat the operation until a terminal is detected. Thereafter, as shown in FIG. 18, when the terminals 100b and 100c can communicate, the content X of the terminal 100b is
100x, the content A 100a is sent to the terminal 100c, and if communication is possible continuously thereafter, the terminal 100c
Is transmitted to the terminal 100b.
As described above, the terminals 110 exchange one another's contents 110 one after another.

The old content 110 is deleted in step S1613 when the image and sound reproduction 210 is executed as shown in FIG. On the other hand, for the content 110 reproduced and deleted by the terminal user, only the deletion flag 519 of the content list 108 is set, and the content 110 itself remains in the terminal 110. Therefore, regardless of the operation of the user, the content 1
The content 10 is retained in the terminal 100 until the content becomes old and disappears, and is copied to another terminal each time the content exchange processing is executed.

In the above embodiment, the partner terminal 1
00, all the content 100 not stored in the content list 108 is exchanged. However, the present invention is not limited to this. In addition, some content information may be exchanged only with a specific member or a user of a certain age group. Includes cases where distribution is limited to In that case, on the distribution (distribution) side (transmission side) of the content, for example, each terminal 100 distributes (distributes)
Holding the distribution conditions defining the contents that can receive the content, adding information items related to the distribution conditions to the content list 108, setting the distribution conditions for each content 110, and the transmitting terminal sets the difference list 90 in step S807.
At the time of creating the content list 1, only the content list of the content that matches the distribution condition of the receiving terminal is included in the difference list. The distribution conditions are acquired from the connection partner terminal at the time of connection establishment processing, for example. On the other hand, there is also a method to restrict the target terminal on the side receiving the content distribution,
For example, there is a method in which each receiving terminal holds distributed right information that defines content that can be distributed, and performs a connection establishment process so as to limit and connect to terminals having the same distributed right information. In this case, since it is not necessary to set distribution conditions for each content, the distribution target person can be more easily controlled. Furthermore, there is a method in which the content distribution side receives the content without limitation, and reproduces the content with limited content during playback. Also in this case, for example, only the receiving terminal holding the reproduction right information can reproduce the content corresponding to the reproduction right. FIG. 19 shows an example of the case where the reproduction is limited. In this case as well, when selecting the content, control is performed so that a list of those having the reproduction right is displayed. That is, the terminal (S1901) that has obtained the reproduction right information extracts only the contents having the reproduction right from the received contents (S1903), further displays a list of entries that match the user attribute (S1905), and performs a user operation. Is selected (S1907, S1909). The reproduction right information is stored in the data storage unit 106 of the wireless content transmitting / receiving device 100 as shown in FIG. If the terminal owner arbitrarily rewrites the distribution condition information, the distributed right information, the reproduction right information, and the like, control over information distribution may not be possible. , The reproduction right information, etc.,
For example, it is desirable to store and manage in a secure device such as an IC card.

According to the above-described embodiment, contents can be transmitted and received between wirelessly connectable terminals, and various contents information can be exchanged easily and at low cost without concentration of communication load. It is also possible to control content and control target terminals. In addition, including the above embodiment,
The present invention is also applicable to terminals connected to a LAN (Local Area Network).

[0026]

According to the present invention, concentration of communication load between terminals can be eliminated, and various contents information can be obtained easily and at low cost.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a case where communication is performed between wireless content transmitting / receiving apparatuses according to an embodiment of the present invention.

FIG. 3 is a configuration example of a front part of the wireless content transmitting / receiving apparatus of the present invention.

FIG. 4 is a diagram illustrating an example of a software configuration of a wireless content transmitting / receiving apparatus according to the present invention.

FIG. 5 is a diagram illustrating an example of a software configuration of a wireless content server according to the present invention.

FIG. 6 is an explanatory diagram of a content list according to the present invention.

FIG. 7 is a diagram showing an example of a processing procedure of content reception according to the present invention.

FIG. 8 is an explanatory diagram of a next communication mode in the present invention.

FIG. 9 is a diagram showing an example of a processing procedure of content exchange in the present invention.

FIG. 10 is an explanatory diagram of a difference list according to the present invention.

FIG. 11 is a diagram showing an example of a processing procedure of connection establishment in the present invention.

FIG. 12 is a diagram illustrating an example of a procedure of a selection process of a transmitting terminal and a receiving terminal according to the present invention.

FIG. 13 is a diagram illustrating an example of a processing procedure for creating a difference list according to the present invention.

FIG. 14 is a diagram illustrating an example of a processing procedure of differential content transmission according to the present invention.

FIG. 15 is a diagram illustrating an example of a processing procedure for receiving differential content according to the present invention.

FIG. 16 is a diagram showing an example of a procedure of a communication interruption process according to the present invention.

FIG. 17 is a diagram showing an example of a processing procedure of image and sound reproduction in the present invention.

FIG. 18 is a diagram illustrating an operation example of a content exchange process according to the present invention.

FIG. 19 is a diagram illustrating an example of limited playback processing of received content according to the present invention.

FIG. 20 is a diagram showing an example of accumulation of reproduction right information in the present invention.

[Explanation of symbols]

100: wireless content transmitting / receiving device, 108: content list, 110: content, 130: wireless content server, 208: content exchange, 214 ...
Content reception, 701 ... Next communication mode, 901
... difference list.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kotaro Yamashita 890 Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Incorporated Financial Systems Division, Hitachi, Ltd. F-term in the Financial Systems Division of the Works (Reference) 5B082 HA05 5C064 BA07 BC18 BC20 BC25 BD01 BD05 BD07 5K067 BB03 BB04 FF02 GG01 GG11 HH17 HH22 HH23 KK15

Claims (11)

[Claims] 1. A portable terminal capable of storing and reproducing data, comprising: storage means for storing content and list information thereof; and a terminal which communicates the list information with another terminal and does not have the same content as itself. And a detecting means for detecting the content, wherein the content is transmitted to the detected terminal. 2. A portable terminal capable of storing and reproducing data, comprising: storage means for storing content and list information thereof; and communication means for communicating the list information with another terminal. A portable terminal characterized by receiving different contents from a portable terminal having contents different from itself. 3. A portable terminal capable of storing and reproducing data, comprising: storage means for storing content, its list information, and said content acquisition condition information; Detection means for communicating with the terminal and detecting a terminal capable of acquiring the content without having the same content as the terminal itself, and transmitting the content of the terminal to the detected terminal. Portable terminal. 4. The portable terminal according to claim 1, wherein said detection means detects a terminal other than the terminal which transmitted its own content immediately before. 5. A portable terminal capable of storing and reproducing data, comprising: storage means for storing contents and list information in which a disappearance point for each of the contents is set; and erasing the corresponding contents after the disappearance point. Erasing means, and detecting means for exchanging the list information with another terminal and detecting a terminal which does not have the same content as the unremoved remaining content, and transmits the content to the detected terminal. A portable terminal characterized by such a configuration. 6. A portable terminal capable of storing and reproducing data, comprising: storage means for storing content and list information thereof; display means for displaying list information of the content; An erasing unit for erasing a specific item from the display of the display unit in accordance with a deletion flag prepared for each content, and exchanging the list information with another terminal and not having the same content as the unremoved remaining content Detecting means for detecting the terminal, transmitting the content to the detected terminal, setting the deletion flag when an operation of deleting the content is performed, and setting the deletion flag when the content is received. A portable terminal characterized in that a list of contents for which the deletion flag has been reset is displayed in a list on the display means. 7. The portable terminal, upon receiving right information for receiving content distribution from the detected terminal,
7. The portable terminal according to claim 1, wherein the portable terminal is configured to transmit content to the detection terminal. 8. The portable terminal according to claim 2, wherein said portable terminal is configured to hold reproduction right information and to reproduce contents within said reproduction right range among received contents. 9. The portable terminal according to claim 1, wherein said storage means comprises an IC card. 10. An information characterized in that the portable terminal according to any one of claims 1 to 9 is used as one or both of a transmitting terminal and a receiving terminal to transmit and receive contents. Delivery system. 11. An information distribution method for distributing content information from a terminal to a terminal, comprising the steps of storing the content information and its index information, communicating the stored index information with another terminal, and storing the same content information as itself. An information distribution method characterized by distributing content information through a step of detecting a terminal having no terminal and a step of transmitting the content information of the terminal to the detected terminal.