JP6117742B2 - Wireless communication system, communication apparatus, setting information providing method, setting information obtaining method, and computer program - Google Patents

Description

  The present invention relates to a wireless communication system, a communication apparatus, a setting information providing method, a setting information acquisition method, and a computer program. Specifically, in a wireless communication system that performs wireless communication via an access point, wireless communication that enables a communication device to easily obtain setting information necessary for access to the access point and to quickly start wireless communication The present invention relates to a system, a communication device used in the wireless communication system, a setting information providing method, a setting information obtaining method, and a computer program.

  In a wireless communication system in which a plurality of communication devices perform wireless communication via an access point, each communication device has setting information necessary for accessing the access point. The setting information includes, for example, an access point ID and key information. Conventionally, the user has to manually input the setting information when newly registering the setting information in the communication device or when updating the setting information as the access point is changed.

  Therefore, a method for simplifying the setting of communication devices using a non-contact interface has been proposed (see, for example, Patent Document 1). In the method described in the above document, a non-contact IC card is provided in a mobile phone. The mobile phone uses a short-range wireless communication using a non-contact IC card, and communicates the card ID of the non-contact IC card included in the mobile phone and the Bluetooth device name of the partner with which the mobile phone wants to communicate via Bluetooth. Is transmitted to the personal computer which is the master control device, and causes the personal computer to identify the communication partner. According to such a method, it is not necessary for the user to manually input a device name or the like, and wireless communication using a mobile phone can be easily performed.

JP 2003-32261 A

  However, in the above method, the communication apparatus must be moved within a distance range in which short-distance wireless communication with the access point is possible. Therefore, when the access point is installed in a place where the user's hand is difficult to reach such as an attic, there is a problem that the user is inconvenienced.

  Therefore, the present invention has been made in view of such problems, and an object of the present invention is to provide setting information necessary for access to an access point in a wireless communication system that performs wireless communication via the access point. It is an object of the present invention to provide a wireless communication system, a communication device, a setting information providing method, a setting information acquiring method, and a computer program that can be easily acquired by a communication device and can quickly start wireless communication.

  In order to solve the above problems, according to an aspect of the present invention, a wireless communication system including a parent communication device and a child communication device that perform wireless communication via an access point is provided. In the above wireless communication system, the parent communication device includes a parent setting information storage unit that stores setting information necessary for accessing the access point; and an access point using the setting information stored in the parent setting information storage unit. A parent-side wireless communication unit that performs wireless communication via the; a parent-side short-range communication unit that performs short-range wireless communication with the child-side communication device; from the child-side communication device via the parent-side short-range communication unit; A setting information transfer unit that receives a setting information acquisition request for requesting acquisition of setting information and transmits the setting information stored in the parent side setting information storage unit to the child side communication device in response thereto. The child side communication device transmits a setting information acquisition request to the parent side communication device via the child side short distance communication unit, and performs a short distance wireless communication with the parent side communication device. A setting information acquisition unit that receives setting information from the side communication device via the child side short-range communication unit; a child side setting information storage unit that stores setting information acquired by the setting information acquisition unit; and a child side setting information storage unit A slave-side wireless communication unit that performs wireless communication via the access point using the stored setting information.

  According to the above invention, the child communication device that does not yet have the setting information necessary for access to the access point can be obtained by short-range wireless communication from the parent communication device that already has the access information. it can. Accordingly, it is not necessary for the user to manually input the setting information to the child communication device, and it is not necessary to directly obtain the setting information from the access point, and the user can communicate the child communication device with the parent communication device and perform near field communication. It is possible to make the slave communication device automatically acquire setting information and enable wireless communication via an access point simply by moving it to a place where it is possible.

  In order to solve the above-described problem, according to another aspect of the present invention, in a communication device that performs wireless communication via an access point: a setting information storage unit that stores setting information necessary for access to the access point; A wireless communication unit that performs wireless communication via an access point using the setting information stored in the setting information storage unit; a short-range communication unit that performs short-range wireless communication with another communication device; A setting information acquisition request for requesting acquisition of setting information from another communication device via the communication unit, and in response to this, the setting information stored in the setting information storage unit is transmitted to the other communication device. An information transfer unit is provided. A communication device is provided.

  According to the above invention, the communication device can transmit the setting information held by itself to the other communication device that does not have the setting information by short-range wireless communication. Therefore, the user can transfer the setting information only by bringing the communication device that already holds the setting information closer to the communication device that does not yet have the setting information. That is, if there is only one communication device according to the present invention, the user can easily make another communication device capable of wireless communication via an access point.

  The communication device includes: a content storage unit that stores content data; and access information necessary for access via the access point to the other communication device from another communication device to which the setting information transfer unit has transmitted the setting information. An access information acquisition unit that receives via the short-range communication unit; a content that accesses another communication device specified by the access information via the wireless communication unit and transmits content data stored in the content storage unit And a transfer unit. According to this configuration, the communication device can transmit content data by wireless communication via the access point to another communication device that has transmitted the setting information by short-range wireless communication. In general, wireless communication via an access point is faster than short-range wireless communication, so even if the data size of the content data is large, the content data can be transferred via wireless communication via the access point. By transferring, the communication device can efficiently transfer content data to another communication device.

  The short-range communication unit may include a reader / writer that reads / writes data from / to a non-contact IC card. The short-range communication unit may specifically perform bidirectional short-range wireless communication using, for example, a near field communication (NFC).

  In order to solve the above problems, according to another aspect of the present invention, there is provided a computer program that causes a computer to function as the communication device. The computer program is stored in a storage unit included in the computer, and is read and executed by a CPU included in the computer, thereby causing the computer to function as the communication device. A computer-readable recording medium on which a computer program is recorded is also provided. The recording medium is, for example, a magnetic disk or an optical disk.

  In order to solve the above-described problem, according to another aspect of the present invention, a wireless communication unit that performs wireless communication via an access point using setting information necessary for access to the access point, and another communication device A short-range communication unit for performing short-range wireless communication between the communication device and the setting information providing method by the communication device; a setting information acquisition request for acquiring the setting information from another communication device is sent to the short-range communication unit A setting information acquisition request receiving step for receiving the setting information; and a setting information transfer step for transmitting the setting information to another communication device via the short-range communication unit in response to the setting information acquisition request. A setting information providing method is provided. The setting information transferred in the setting information transfer step may be setting information read from the setting information storage unit in which the setting information is stored.

  In order to solve the above problem, according to another aspect of the present invention, in a communication device that performs wireless communication via an access point: a short-range communication unit that performs short-range wireless communication with another communication device; A setting information acquisition request for transmitting a setting information acquisition request for requesting acquisition of setting information necessary for access to the access point to the other communication device and receiving setting information from the other communication device via the near field communication unit; A setting information storage unit that stores the setting information acquired by the setting information acquisition unit; and a wireless communication unit that performs wireless communication via the access point using the setting information stored in the setting information storage unit. A communication device is provided.

  According to the above invention, a communication device that does not yet have setting information can receive the setting information from other communication devices that do not already have setting information by short-range wireless communication. Therefore, the user can transfer the setting information only by bringing the communication device that does not yet have the setting information closer to the communication device that already has the setting information. That is, the user can make the communication device ready for wireless communication via the access point by a simple operation of bringing the communication device according to the invention close to another communication device that already holds the setting information. it can.

  The communication device includes a content storage unit that stores content; and another communication device that is a transmission source of the setting information acquired by the setting information acquisition unit, which is necessary for access to the other communication device via an access point. An access information acquisition unit that receives the access information via the short-range communication unit; accesses another communication device specified by the access information via the wireless communication unit, and stores the content data stored in the content storage unit And a content transfer unit for transmission. According to such a configuration, the communication device can transmit content data by wireless communication via the access point to another communication device that is a transmission source of the setting information received by short-range wireless communication. That is, the user makes the communication device ready for wireless communication via the access point by a simple operation of bringing the communication device according to the invention close to another communication device that already holds the setting information, and Thus, the content can be transferred to a communication device that is close.

  The communication apparatus may further include a transfer content selection unit that selects content transferred by the content transfer unit from the content storage unit. According to this configuration, when a plurality of contents are stored in the content storage unit, it is possible to arbitrarily select contents to be transferred to another communication device.

  The communication apparatus may include a content reproduction unit that reproduces content. In this case, the transfer content selection unit may include the content being reproduced by the content reproduction unit when selecting content. The content may be selected as content transferred by the content transfer unit. According to such a configuration, the communication device can automatically specify the content being played back as a playback target and transmit it to another communication device without the user explicitly specifying the content to be transferred. .

  When the content being played back by the content playback unit is selected as the content to be transferred, the content transfer unit sends information on the playback position of the content played back by the content playback unit to other communication devices together with the content data. You may make it transmit. The information on the reproduction position is information for identifying how far the content being reproduced has been reproduced, for example, the elapsed time from the start of content reproduction. According to such a configuration, it is possible to reproduce the content data from the middle in accordance with the information on the reproduction position in another communication device that is the transmission destination of the content data and the information on the reproduction position. In other words, when the content data is reproduced in the communication device according to the invention, the content data can be reproduced from the continuation in the other communication device to which the content data is transferred.

  The short-range communication unit may include a non-contact IC card function execution unit that executes a non-contact IC card function. The non-contact IC card function includes a function of performing non-contact near field communication with a reader / writer and transmitting / receiving data. The non-contact IC card function execution unit may be realized as a non-contact IC card, but is not limited to a card shape.

  In order to solve the above problems, according to another aspect of the present invention, there is provided a computer program that causes a computer to function as the communication device.

  In order to solve the above-described problem, according to another aspect of the present invention, a wireless communication unit that performs wireless communication via an access point using setting information necessary for access to the access point, and another communication device In a setting information acquisition method by a communication device having a short-range wireless communication unit that performs short-range wireless communication between; a setting information acquisition request for requesting acquisition of setting information to another communication via the short-range communication unit A setting information acquisition method comprising: a setting information acquisition request transmission step for transmitting to a device; and a setting information acquisition step for receiving setting information from another communication device via a short-range communication unit. .

  As described above, according to the present invention, in a wireless communication system that performs wireless communication via an access point, the communication device simply acquires setting information necessary for access to the access point and starts wireless communication quickly. It is possible to provide a wireless communication system, a communication device, a setting information providing method, a setting information obtaining method, and a computer program that can be performed.

It is explanatory drawing which shows the whole structure of the radio | wireless communications system concerning the 1st Embodiment of this invention. It is a block diagram which shows the function structure of the access point, the parent side communication apparatus, and the child side communication apparatus in the embodiment. It is explanatory drawing which shows the setting information in the embodiment. 4 is a timing chart showing a data flow in the embodiment. It is a block diagram which shows the function structure of the access point concerning the 2nd Embodiment of this invention, a parent-side communication apparatus, and a child side communication apparatus. 4 is a timing chart showing a data flow in the embodiment. It is a flowchart which shows the flow of the information processing of the child side communication apparatus in the embodiment. It is a flowchart which shows the flow of the information processing of the master side communication apparatus in the embodiment. It is a block diagram which shows the function structure of the access point concerning the 3rd Embodiment of this invention, a parent-side communication apparatus, and a child side communication apparatus. 4 is a timing chart showing a data flow in the embodiment.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  In the following embodiments, in a wireless communication system in which a plurality of communication devices perform wireless communication via an access point, setting information is already held in a communication device that does not yet hold setting information necessary for access to the access point. The setting information is acquired by transferring the setting information from the communication apparatus. If the setting information is transferred from the communication device that already holds the setting information to another communication device, the communication device needs to be manually input the setting information by the user. No need to get. Hereinafter, embodiments will be described in detail.

(First embodiment)
In the first embodiment, a radio communication system according to the present invention will be described by applying it to a radio communication system 100 including a master communication device 104 and a slave communication device 106 capable of radio communication via an access point 102.

<Overall Configuration of Wireless Communication System 100>
First, based on FIG. 1, the whole structure of the radio | wireless communications system 100 concerning this embodiment is demonstrated. The wireless communication system 100 includes an access point 102, a parent communication device 104, and a child communication device 106. In the figure, there are two communication devices, the parent communication device 104 and the child communication device 106, but more communication devices may be included.

  The access point 102 has a function of relaying wireless communication between communication devices in the wireless communication system 100. Specifically, the access point 102 is a wireless LAN access point, and relays radio waves between the communication devices in a wireless LAN composed of the communication devices 104 and 106 that are wireless communication devices compliant with the IEEE 802.11 standards. Thus, it plays a role of performing communication between the communication devices. The access point 102 may have a connection function with a wired LAN. The access point 102 is provided with an ESSID (Extended Service Set Identifier) for identifying the network. The access point 102 communicates only with a communication device having the same ESSID as the ESSID assigned to itself.

  The access point 102 also has a WEP (Wired Equivalent Privacy) key. This WEP key is distributed to each communication device relayed by the access point 102, and each communication device encrypts and decrypts data to be communicated using the WEP key. That is, each communication device requires an ESSID to access the access point 102, and requires a WEP key to perform wireless communication with other communication devices via the access point 102. Therefore, in the present embodiment, the setting information necessary for the communication device to access the access point 102 includes at least an ESSID and a WEP key.

  The communication devices 104 and 106 are computers that can perform wireless communication via the access point 102. Specifically, the communication devices 104 and 106 include a wireless LAN adapter that conforms to the IEEE 802.11 standards, and the same ID as the ESSID assigned to the access point 102 is set in the wireless LAN adapter. Through the access point 102, wireless communication can be performed with a communication device having the same ESSID as that of itself.

  Further, each communication apparatus has a WEP key similar to the WEP key held by the access point 102, so that data communicated with the WEP key can be encrypted and decrypted. That is, each communication device can transmit and receive data by performing wireless communication with another communication device via the access point 102 by holding the setting information. In the present embodiment, in view of the function of each communication device, the communication device 104 is referred to as a parent communication device 104 and the communication device 106 is referred to as a child communication device 106.

  The parent communication device 104 already has setting information and has a function of providing the setting information to the child communication device 106. The slave communication device 106 does not yet have setting information and has a function of acquiring setting information from the master communication device 104. Transmission / reception of setting information between the master communication device 104 and the slave communication device 106 is performed using short-range wireless communication. The near field communication can be a non-contact communication using, for example, a near field communication (NFC). Since NFC has a narrow use range of about 10 cm, it is excellent in security such as limiting communication partners by hand action.

  Specifically, for example, the slave communication device 106 includes a non-contact IC chip that is an example of a non-contact IC card function execution unit that executes a non-contact IC card function. A reader / writer that communicates with the non-contact IC chip of the slave communication device 106 is provided. In this case, if the distance between the parent communication device 104 and the child communication device 106 is within the NFC usage range, communication is performed between the reader / writer of the parent communication device 104 and the IC chip of the child communication device 106. And setting information is transmitted and received.

  Note that the setting information held by the parent communication device 104 may be acquired directly from the access point 102 by the parent communication device 104, or the parent communication device 104 may receive information from another communication device. What was acquired by near field communication may be used. In this case, the parent communication device 104 is a child communication device in relation to other communication devices from which the setting information is acquired. Similarly, after acquiring the setting information from the parent communication device 104, the child communication device 106 may be able to transmit the setting information to another communication device by short-range wireless communication. In this case, the child communication device 106 becomes the parent communication device in relation to another communication device that is the transmission destination of the setting information. That is, each communication device belonging to the wireless communication system 100 can have both a function as a parent communication device and a function as a child communication device.

  The master communication device 104 and the slave communication device 106 are computers having both a wireless communication function via the access point 102 and a short-range wireless communication function. Specifically, a personal computer, a television, a camera, music A player, a game machine, a mobile phone, a PDA (Personal Digital Assistant), and the like can be exemplified.

  The overall configuration of the wireless communication system 100 has been described above. Next, the functional configuration of the access point 102, the master wireless communication device 104, and the slave wireless communication device 106 will be described with reference to FIG.

<Functional configuration of access point 102>
The access point 102 mainly includes a setting information storage unit 112, a setting information transmission unit 114, a wireless communication relay unit 116, and the like. The setting information storage unit 112 stores setting information. Specifically, the setting information storage unit 112 stores setting information including the ESSID assigned to the access point 102 and the WEP key. FIG. 3 shows an example of setting information. As shown in FIG. 3, the setting information 1120 includes the name of the access point 102, the SSID (ESSID), the WEP key, and the like.

  The setting information transmission unit 114 transmits the setting information stored in the setting information storage unit 112 to the communication device. In the present embodiment, the setting information transmission unit 114 transmits setting information to the parent communication device 104 by short-range wireless communication. Note that the access point 102 and the parent communication device 104 may be connected by a wired communication line. In that case, the setting information transmission unit 114 may transmit setting information to the parent communication device 104 by wired communication. .

  The wireless communication relay unit 116 relays wireless communication between the parent communication device 104 and the child communication device 106. Specifically, the wireless communication relay unit 116 relays communication between communication devices having the same ID as the ESSID included in the setting information stored in the setting information storage unit 112, and the master communication device 104 and the child side Only when both of the communication devices 106 have the ESSID, the wireless communication between them is relayed.

<Functional configuration of parent communication device 104>
The parent-side communication device 104 mainly includes a setting information receiving unit 122, a parent-side wireless communication unit 124, a parent-side setting information storage unit 126, a setting information transfer unit 128, and a parent-side short-range communication unit 130.

  The setting information receiving unit 122 receives setting information from the access point 102. Specifically, the setting information receiving unit 122 acquires setting information from the access point 102 by short-range wireless communication via the parent-side short-range communication unit 130 when the access point 102 has a short-range communication function. . In addition, when the parent communication device 104 and the access point 102 are connected by a wired communication network, setting information is acquired by wired communication. The setting information receiving unit 122 stores the received setting information in the parent side setting information storage unit 126.

  The parent-side setting information storage unit 126 stores setting information. Specifically, the parent-side setting information storage unit 126 includes a memory such as a RAM (Random Access Memory), an HDD (Hard Disk Drive), and stores setting information acquired from the setting information receiving unit 122. .

  The master-side wireless communication unit 124 performs wireless communication with other communication devices via the access point 102. Specifically, the master-side wireless communication unit 124 includes a wireless LAN adapter compliant with the IEEE 802.11 standards, and performs wireless communication using setting information stored in the parent-side setting information storage unit 126. . That is, the master-side wireless communication unit 124 transmits data including the ESSID included in the setting information by radio waves and relays the radio waves to the access point 102 having the same ID as the ESSID, so that the other wireless communication unit 124 has the same ESSID. Data is transmitted to the communication device. In addition, the master wireless communication unit 124 receives data transmitted from other communication devices via the access point 102. At the time of data transmission / reception, the parent-side wireless communication unit 124 encrypts data to be transmitted and decrypts the received data using the WEP key included in the setting information.

  The parent-side short-range communication unit 130 performs short-range wireless communication with the child-side communication device 106. Specifically, the parent-side short-range communication unit 130 is configured to include a reader / writer that performs communication with a non-contact IC chip compliant with NFC, and between the non-contact IC chip included in the child-side communication device 106. Send and receive data. In the present embodiment, the parent short-range communication unit 130 includes a reader / writer, but the present invention is not limited to such an example. For example, the parent-side short-range communication unit 130 may be configured to include a non-contact IC chip, and the child-side communication device 106 may include a reader / writer. Further, the master communication device 104 and the slave communication device 106 may each include both a reader / writer and a non-contact IC chip.

  The setting information transfer unit 128 transmits the setting information stored in the parent side setting information storage unit 126 to the child side communication device 106 via the parent side short-range communication unit 130. Specifically, the setting information transfer unit 128 receives a setting information acquisition request for requesting acquisition of setting information from the child communication device 106 via the parent side short-range communication unit 130, and responds to the setting information acquisition request. The setting information is read from the parent-side setting information storage unit 126, and the read setting information is transmitted to the child-side communication device 106.

<Functional Configuration of Child Communication Device 106>
The child-side communication device 106 mainly includes a child-side wireless communication unit 142, a child-side setting information storage unit 144, a child-side short-range communication unit 146, a setting information acquisition unit 148, and the like.

  Similar to the parent wireless communication unit 124, the child wireless communication unit 142 performs wireless communication with other communication devices via the access point 102. Specifically, the slave-side wireless communication unit 142 includes a wireless LAN adapter that complies with the IEEE 802.11 standards, and performs wireless communication using setting information stored in the slave-side setting information storage unit 144. . That is, the child-side wireless communication unit 142 transmits data including the ESSID included in the setting information by radio waves, and relays the radio waves to the access point 102 having the same ID as the ESSID, so that the other radio communication unit 142 has the same ESSID. Data is transmitted to the communication device. Further, the child-side wireless communication unit 142 receives data transmitted from another communication device via the access point 102. At the time of data transmission / reception, the slave-side wireless communication unit 142 encrypts data to be transmitted and decrypts the received data using a WEP key included in the setting information.

  The child side setting information storage unit 144 stores setting information. The setting information stored in the child-side setting information storage unit 144 is acquired from the parent-side communication device 104 by the setting information acquisition unit 148.

  The child near field communication unit 146 performs near field communication with the parent communication device 104. More specifically, the child side short-range communication unit 146 includes a non-contact IC chip compliant with NFC, and transmits and receives data to and from a reader / writer included in the parent side communication device 104. As a specific example of a non-contact IC chip compliant with NFC, a Felica (registered trademark) chip can be cited.

  The setting information acquisition unit 148 acquires setting information from the parent communication device 104 via the child side short-range communication unit 146. Specifically, the setting information acquisition unit 148 transmits a setting information acquisition request for requesting acquisition of setting information to the parent communication device 104 via the child side short-range communication unit 146, and receives the setting information. The setting information acquisition unit 148 stores the acquired setting information in the child side setting information storage unit 144.

  Heretofore, the functional configurations of the access point 102, the master wireless communication device 104, and the slave wireless communication device 106 have been described. Next, based on FIG. 4, a data flow when the slave communication device 106 acquires setting information from the master communication device 104 in the wireless communication system 100 will be described.

<Data Flow in Wireless Communication System 100>
As shown in FIG. 4, first, short-range wireless communication is started between the parent communication device 104 and the child communication device 106 (S102). Specifically, for example, the child side communication device 106 is trapped by the parent side communication device 104, so that the distance between the child side communication device 106 and the parent side communication device 104 is within a range where short-range wireless communication is possible. In this case, near field communication is started by both near field communication units.

  Next, the child communication device 106 transmits a setting information acquisition request to the parent communication device 104 by short-range wireless communication (S104). When receiving the setting information acquisition request, the parent communication device 104 transmits the setting information held by itself to the child communication device 106 by short-range wireless communication (S106). When the slave communication apparatus 106 receives the setting information, the slave communication apparatus 106 performs wireless communication via the access point 102 using the setting information. More specifically, the slave communication device 106 transmits data including the ESSID included in the acquired setting information by radio waves, causes the access point 102 having the same ESSID to relay the radio waves, and transmits other data having the same ESSID. Data is transmitted to the communication device. At that time, the data is encrypted with the WEP key included in the setting information.

  For example, when the child communication device 106 wishes to perform wireless communication with the parent communication device 104, the child communication device 106 transmits a connection request to the parent communication device 104 via the access point 102 (S108). In response to the connection request transmitted by the child communication device 106, the parent communication device 104 similarly returns a connection response via the access point 102 (S110), whereby the child communication device 106, the parent communication device 104, Wireless communication via the access point 102 is started (S112). The data flow has been described above.

  As described above, according to the wireless communication system 100 according to the first embodiment, since the child communication device 106 acquires setting information from the parent communication device 104 by short-range wireless communication, the user of the child communication device 106 Can move the child communication device 106 to a range where short-range wireless communication with the parent communication device 104 is possible, acquire setting information, and then perform wireless communication via the access point 102. That is, since the slave communication device 106 can acquire the setting information from another communication device (the master communication device 104) that already holds the setting information, the slave communication device 106 acquires the setting information directly from the access point 102 as in the past. It is not necessary, and manual input of setting information by the user is not necessary.

  Furthermore, since the setting information is transmitted and received between the child side communication device 106 and the parent side communication device 104 by short-range wireless communication, the user simply holds the child side communication device 106 to the parent side communication device 104, for example. Thus, the slave side communication device 106 can be put into a state where wireless communication via the access point 102 can be performed, which is simple.

(Second Embodiment)
In the second embodiment, a radio communication system according to the present invention will be described by applying it to a radio communication system 200 including a master side communication device 204 and a slave side communication device 206 capable of radio communication via the access point 102. This embodiment is the same as the first embodiment in that the child communication device 206 acquires setting information necessary for access to the access point 102 from the parent communication device 204 by short-range wireless communication. In the present embodiment, the first embodiment is further performed in that the child communication device 206 identifies the parent communication device 204 that has acquired the setting information as a communication partner for wireless communication via the access point 102 and transmits data. Different from form. Hereinafter, the difference from the first embodiment will be mainly described.

<Overall Configuration of Wireless Communication System 200>
First, based on FIG. 5, the whole structure of the radio | wireless communications system 200 concerning 2nd Embodiment is demonstrated. As illustrated, the wireless communication system 200 includes an access point 102, a master communication device 204, and a slave communication device 206. Similar to the first embodiment, the parent communication device 204 and the child communication device 206 perform short-range wireless communication. Further, the master communication device 204 and the slave communication device 206 can perform wireless communication via the access point 102 using the setting information.

  The master communication device 204 already has the setting information, and can transfer the setting information to the slave communication device 206. The slave communication device 206 can acquire the setting information from the master communication device 204, and can perform wireless communication via the access point 102 after acquiring the setting information. Further, the child communication device 206 acquires access information necessary for communicating with the parent communication device 204 by wireless communication via the access point 102 from the parent communication device 204 by short-range wireless communication, and acquires the acquired access. Using the information, the parent communication device 204 can be accessed via the access point 102.

  In the present embodiment, the slave communication device 206 is a digital camera having both a wireless communication function via the access point 102 and a short-range communication function. The parent communication device 204 is a personal computer that has both a wireless communication function via the access point 102 and a near field communication function, and a display device that outputs image content. Then, after the setting information and the access information are transmitted and received between the parent communication device 204 and the child communication device 206 by short-range wireless communication, they are stored in the child communication device 206 by wireless communication via the access point 102. The parent side communication device 204 outputs the image content received from the child side communication device 206 to the display device.

  In general, since wireless communication via the access point 102 has a higher communication speed than short-range wireless communication, it is more efficient to transmit / receive image content having a large data size via wireless communication via the access point 102. In addition, since short-distance wireless communication cannot be performed unless the communication devices are kept relatively close to each other, such as within 10 cm, the user is on the child side while transferring content such as image content. The communication device 206 and the parent communication device 204 must be close to each other. If the content is transferred by wireless communication via the access point 102, such inconvenience is not imposed on the user.

  The overall configuration of the wireless communication system 200 has been described above. Next, with reference to FIG. 5, the functional configuration of the parent communication device 204 and the child communication device 206 will be described. Note that the functional configuration of the access point 102 is the same as in the first embodiment, and a description thereof will be omitted.

<Functional configuration of parent communication device 204>
As shown in FIG. 5, the parent communication device 204 includes a setting information receiving unit 122, a parent wireless communication unit 124, a parent setting information storage unit 126, a parent content receiving unit 210, a parent content output unit 212, It mainly includes a side access information transmission unit 214, a setting information transfer unit 128, a parent side short-range communication unit 130, and the like. Components having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The parent side access information transmission unit 214 transmits the access information to the child side communication device 206. The access information is information necessary for another communication device to perform wireless communication with the parent communication device 204 by wireless communication via the access point 102. For example, the access information is included in the wireless communication system 200. The identifier etc. which identify uniquely is included. The parent-side access information transmitting unit 214 receives an access point acquisition request from the child-side communication device 206 via the parent-side short-range communication unit 130, and sends access information to the child-side communication device 206 in response to the request. Send by distance wireless communication.

  The parent content receiving unit 210 receives the content transmitted from the child communication device 206. Examples of content include audio content such as music content, performances, and radio programs, and video (Video) composed of still images or moving images that constitute movies, television programs, video programs, photographs, paintings, charts, and the like. A content, an electronic book (E-book), a game, software, etc. can be mentioned. In the present embodiment, the content is described as image content photographed by the child communication device 206 that is a digital camera.

  The parent-side content receiving unit 210 receives the image content transmitted by the child-side communication device 206 through wireless communication via the access point 102 via the parent-side wireless communication unit 124 and provides it to the parent-side content output unit 212. .

  The parent content output unit 212 includes a display device such as a liquid crystal display, a plasma display, or a CRT, and displays the image content acquired from the parent content receiver 210 on the display device.

<Functional Configuration of Child Communication Device 206>
Next, the functional configuration of the slave communication device 206 will be described with reference to FIG. The child-side communication device 206 includes a child-side wireless communication unit 142, a child-side setting information storage unit 144, a child-side content transfer unit 220, a child-side transfer content designation unit 222, a child-side access information acquisition unit 226, and a child-side short-range communication unit. 146 mainly includes a setting information acquisition unit 148 and the like.

  The child side access information acquisition unit 226 acquires access information from the parent side communication device 204. Specifically, the child-side access information acquisition unit 226 transmits an access information acquisition request for requesting acquisition of access information of the parent-side communication device 204 to the parent-side communication device 204 via the child-side short-range communication unit 146, In response to this, the access information transmitted from the parent communication device 204 is received via the child near field communication unit 146. The access information acquired by the child-side access information acquisition unit 226 is stored in the communication device that is the transmission destination when the child-side content transfer unit 220 transmits image content to the parent-side communication device 204 through wireless communication via the access point 102. Used to identify the parent communication device 204.

  The child-side transfer content designation unit 222 includes, for example, an input device such as an operation button and a touch panel, and an output device such as a liquid crystal monitor that displays image content, and is stored in the child-side content storage unit 224. The content to be transferred is designated from among the image contents. Specifically, the child-side transfer content specifying unit 222 causes the user to select a content to be transferred by displaying an image list on the output device, and the one or a plurality of image contents specified by the user via the input device. Is obtained from the child-side content storage unit 224 and provided to the child-side content transfer unit 220.

  The child-side content storage unit 224 stores content. In the present embodiment, digital data of an image captured by an image capturing unit (not shown) of the slave communication device 206 is stored in the slave content storage unit 224.

  The child-side content transfer unit 220 transmits the image content specified by the child-side content specifying unit 222 to the parent communication device 204. Specifically, the child-side content transfer unit 220 uses the setting information acquired from the parent-side communication device 204 by the setting information acquisition unit 148 and stored in the child-side setting information storage unit 144 via the access point 102. Wireless communication. At that time, the child-side content transfer unit 220 accesses the parent-side communication device 204 using the access information of the parent-side communication device 204 acquired by the child-side access information acquisition unit 226. Then, the child content transfer unit 220 transmits the image content specified by the child transfer content specifying unit 222 to the parent communication device 204 specified by the access information by wireless communication via the access point 102.

  Heretofore, the functional configurations of the master wireless communication device 204 and the slave wireless communication device 206 have been described. Next, a data flow when the slave communication device 206 acquires setting information from the master communication device 204 and subsequently transfers content in the wireless communication system 200 will be described with reference to FIG.

<Data Flow in Wireless Communication System 200>
First, the child communication device 206 designates content to be transferred (S202). Specifically, the child communication device 206 designates content to be transferred to the parent communication device 204 in accordance with an instruction from the user via the input device. Thereafter, short-range wireless communication is started between the parent communication device 204 and the child communication device 206 (S204). Specifically, for example, when the child communication device 206 is trapped by the parent communication device 204, the distance between the child communication device 206 and the parent communication device 204 is within a range where short-range wireless communication is possible. In this case, near field communication is started by both near field communication units.

  Next, the child-side communication device 206 transmits a setting information acquisition request to the parent-side communication device 204 by short-range wireless communication (S206). When receiving the setting information acquisition request, the master communication device 204 transmits the setting information held by itself to the slave communication device 206 by short-range wireless communication (S208). When the slave communication device 206 receives the setting information, the slave communication device 206 can perform wireless communication via the access point 102 using the setting information.

  After acquiring the setting information in S208, the child communication device 206 subsequently requests the parent communication device 204 to acquire access information of the parent communication device 204 by short-range wireless communication (S210). In response to the request, the parent communication device 204 transmits access information to the child communication device 206 by short-range wireless communication (S212).

  When the child side communication device 206 acquires the access information from the parent side communication device 204, the parent side communication device subsequently performs wireless communication via the access point 102 using the access information and the setting information acquired in S208. A connection is requested to 204 (S214). When the parent communication device 204 transmits a connection OK response in response to the connection request (S216), wireless communication via the access point 102 between the parent communication device 204 and the child communication device 206 is performed. The process is started (S218). When the wireless communication is started, the child communication device 206 transmits the content designated in S202 to the parent communication device 204 (S220), and the parent communication device 204 outputs the received content (S222).

  The flow of data between the parent communication device 204 and the child communication device 206 has been described above. Next, the flow of information processing performed by each of the child communication device 206 and the parent communication device 204 will be described.

<Flow of Information Processing of Child Communication Device 206>
As shown in FIG. 7, the child communication device 206 first designates the content to be transferred (S302). Next, the child communication device 206 is brought closer to the parent communication device 204 by the user (S304). When the distance between the child-side communication device 206 and the parent-side communication device 204 becomes a predetermined distance or less, the child-side communication device 206 starts short-range wireless communication with the parent-side communication device 204 (S306). When the short-range wireless communication is started, the child-side communication device 206 acquires setting information from the parent-side communication device 204 by short-range wireless communication (S308). Subsequently, the child communication device 206 specifies the parent communication device 204 as a communication partner (S310). Specifically, the child communication device 206 acquires access information from the parent communication device 204, and designates the parent communication device 204 specified by the access information as a communication partner for wireless communication via the access point 102. .

  Subsequently, the child communication device 206 accesses the access point 102 using the setting information acquired in S308 (S312), and starts wireless communication via the access point 102 (S314). Then, the content specified in S302 is transferred to the parent communication device 204 specified as the communication partner in S310 (S316).

<Information Processing Flow of Master Communication Device 204>
As shown in FIG. 8, first, the child communication device 206 is brought closer to the parent communication device 204 (S402). When the distance between the parent-side communication device 204 and the child-side communication device 206 becomes a predetermined distance or less, the parent-side communication device 204 starts short-range wireless communication with the child-side communication device 206 (S404). When short-range wireless communication is started, the parent communication device 204 receives a setting information acquisition request from the child communication device 206 (S406). In response to the received request, the master communication device 204 transmits setting information to the slave communication device 206 by short-range wireless communication (S408). Further, the master communication device 204 receives an access information acquisition request from the slave communication device 206 and transmits access information accordingly (S410).

  Thereafter, in response to a connection request by wireless communication via the access point 102 from the child communication device 206, wireless communication via the access point 102 is started with the child communication device 206 (S412). Subsequently, the parent communication device 204 receives content from the child communication device 206 (S414), and outputs the received content (S416). The information processing flow of each communication apparatus has been described above.

  As described above, in the present embodiment, the child communication device 206 identifies the parent communication device 204 that has acquired the setting information as a communication partner of wireless communication via the access point 102, and transfers the content. That is, the child communication device 206 transfers the content to the parent communication device 204 that is a partner device that has performed short-range wireless communication with the child communication device 206. Therefore, the user can transfer the designated content to the parent communication device 204 only by bringing the child communication device 206 closer to the parent communication device 204.

  Conventionally, a user has to set setting information for accessing an access point in a wireless communication apparatus and manually designate a partner apparatus for performing wireless communication via the access point. However, according to the present embodiment, the user can set the setting information with only one action of bringing the wireless communication device (child communication device 206) closer to another wireless communication device (parent communication device 204), and The communication partner can be specified. As a result, the user can easily and quickly transfer the content in the child communication device 206 to the parent communication device 204 and cause the parent communication device 204 to output the content.

  In addition, since the child communication device 206 is moved closer to the parent communication device 204, the transfer partner of the content stored in the child communication device 206 can be specified, so that the user can perform an intuitive operation.

  In the above embodiment, the content is described as an image content, but the present invention is not limited to such an example. For example, the content may be music. In this case, the child communication device 206 can be configured as a portable music player, and the parent communication device 204 can be configured as a stationary music player.

  When the child communication device 206 designates the content to be transferred, in addition to the input by the user via the input device, the content being reproduced by the content reproduction unit (not shown) provided in the child communication device 206 is to be transferred. Can be specified automatically. When the content being reproduced is designated as a transfer target, information on the position (reproduction position) where reproduction is completed in the child communication device 206 is transmitted to the parent communication device 204 together with the content. In accordance with the acquired position information, the content can be reproduced from that position.

  That is, the music played and output by the child communication device 206 is played and output by the parent communication device 204 from the continuation being played by the child communication device 206. Therefore, when the user plays the music content using the child communication device 206 and listens to the music, the user can bring the child communication device 206 close to the parent communication device 204 once to set the output destination of the music to the parent side. Transfer to the communication device 204 and listen to the music output from the parent communication device 204. The master communication device 204 may reproduce the content received from the slave communication device 206 by a streaming method. That is, in this case, the child communication device 206 does not transfer the music content as a file to the parent communication device 204, but transfers data to the parent communication device 204 as streaming data, and the parent communication device 204 is transferred. Synchronize the incoming data and output audio from the speaker.

(Third embodiment)
In the third embodiment, a radio communication system according to the present invention will be described by applying it to a radio communication system 300 including a master communication device 304 and a slave communication device 306 that can perform radio communication via an access point 102. The present embodiment is the same as the first embodiment in that the child communication device 306 acquires setting information necessary for access to the access point 102 from the parent communication device 304 by short-range wireless communication. This embodiment is similar to the second embodiment in that data is transmitted / received via the access point 102 between the parent communication device 304 and the child communication device 306 after transmission / reception of setting information. In the second embodiment, the child communication device 206 identifies the parent communication device 204 that acquired the setting information as a communication partner and transmits data. However, in this embodiment, the parent communication device 304 uses the setting information. Is different from the second embodiment in that the child communication device 306 that has transmitted the message is identified as the communication partner of the wireless communication via the access point 102 and the data is transmitted. Hereinafter, the difference from the first embodiment and the second embodiment will be mainly described.

<Overall Configuration of Wireless Communication System 300>
First, based on FIG. 9, the whole structure of the radio | wireless communications system 300 concerning 3rd Embodiment is demonstrated. As illustrated, the wireless communication system 300 includes an access point 102, a parent communication device 304, and a child communication device 306. Similar to the first embodiment, the parent communication device 304 and the child communication device 306 perform short-range wireless communication. Further, the master communication device 304 and the slave communication device 306 can perform wireless communication via the access point 102 using the setting information.

  The master communication device 304 already has setting information and can transfer the setting information to the slave communication device 306. Further, the parent communication device 304 acquires access information necessary for communicating with the child communication device 306 by wireless communication via the access point 102 from the child communication device 306 by short-range wireless communication, and acquires the acquired access. Using the information, the slave communication device 306 can be accessed via the access point 102. The slave communication device 306 can acquire the setting information from the master communication device 304, and can perform wireless communication via the access point 102 after acquiring the setting information.

  In the present embodiment, the slave communication device 306 is a portable music player that has both a wireless communication function via the access point 102 and a short-range communication function. The parent communication device 304 is a personal computer that has both a wireless communication function and a short-range communication function via the access point 102 and can store music content. Then, after the setting information and the access information are transmitted / received between the parent communication device 304 and the child communication device 306 by short-range wireless communication, they are stored in the parent communication device 304 by wireless communication via the access point 102. The child-side communication device 306 can output the music content received from the parent-side communication device 304.

  The overall configuration of the wireless communication system 300 has been described above. Next, with reference to FIG. 9, functional configurations of the parent communication device 304 and the child communication device 306 will be described. Note that the functional configuration of the access point 102 is the same as in the first embodiment, and a description thereof will be omitted.

<Functional configuration of parent communication device 304>
As shown in FIG. 9, the parent communication device 304 includes a setting information receiving unit 122, a parent wireless communication unit 124, a parent setting information storage unit 126, a parent content transfer unit 310, a parent content storage unit 314, It mainly includes a side content designation unit 312, a parent side access information acquisition unit 316, a setting information transfer unit 128, a parent side short-range communication unit 130 and the like. Components having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The parent side access information acquisition unit 316 acquires access information from the child side communication device 306. The access information includes an identifier that uniquely identifies the child communication device 306 within the wireless communication system 300. The parent-side access information acquisition unit 316 transmits an acquisition request for requesting acquisition of access information of the child-side communication device 306 to the child-side communication device 306 via the parent-side short-range communication unit 130, and accordingly the child-side communication Access information transmitted from the device 306 is received via the parent-side short-range communication unit 130. The access information acquired by the parent-side access information acquisition unit 316 is stored in the destination communication device when the parent-side content transfer unit 310 transmits music content to the child-side communication device 306 by wireless communication via the access point 102. It is used to identify the slave communication device 306.

  The parent transfer content specifying unit 312 includes, for example, an input device such as a keyboard, a touch panel, and a mouse, and an output device such as a liquid crystal display that displays a list of music contents, and is stored in the parent content storage unit 314. The content to be transferred is designated from among a plurality of music contents. Specifically, the parent transfer content specifying unit 312 causes the output device to display a music content list including a song name, an artist name, and the like, and causes the user to select content to be transferred, and the user via the input device. One or a plurality of music contents specified in the above are acquired from the parent content storage unit 314 and provided to the parent content transfer unit 310.

  The parent content storage unit 314 stores content. In the present embodiment, the digital data of the music downloaded by the master communication device 304 via the Internet, ripped from a music CD (Compact Disk), or transferred from another communication device or the like is the master content storage unit. 314 is stored.

  The parent content transfer unit 310 transmits the music content designated by the parent content designation unit 312 to the child communication device 306. Specifically, the parent content transfer unit 310 performs wireless communication via the access point 102 using the setting information stored in the parent setting information storage unit 126. At that time, the parent-side content transfer unit 310 accesses the child-side communication device 306 using the access information of the child-side communication device 306 acquired by the parent-side access information acquisition unit 316. Then, the parent content transfer unit 310 transmits the music content specified by the parent transfer content specification unit 312 to the child communication device 306 specified by the access information by wireless communication via the access point 102.

  Note that the parent communication device 304 transmits a list of music contents that can be transferred to the child communication device 306 by short-range wireless communication, and the parent content transfer unit 310 transmits the content selected by the child communication device 306. You may make it transmit.

<Functional Configuration of Child Communication Device 306>
Next, the functional configuration of the slave communication device 306 will be described with reference to FIG. The child-side communication device 306 includes a child-side wireless communication unit 142, a child-side setting information storage unit 144, a child-side content reception unit 320, a child-side content output unit 322, a child-side access information transmission unit 324, and a child-side short-range communication unit 146. The setting information acquisition unit 148 is mainly provided.

  The child side access information transmission unit 324 transmits the access information to the parent side communication device 304. Specifically, the child-side access information transmission unit 324 receives an access point acquisition request from the parent-side communication device 304 via the child-side short-range communication unit 146, and transmits access information to the parent-side communication in response to the request. It transmits to the device 304 by short-range wireless communication.

  The child-side content reception unit 320 receives music content transmitted from the parent-side communication device 304. The child-side content receiving unit 320 receives the music content transmitted by the parent-side communication device 304 through wireless communication via the access point 102 via the child-side wireless communication unit 142 and provides it to the child-side content output unit 322. . Note that a storage unit for storing the music content received by the child-side content receiving unit 320 may be provided in the child-side communication device 306.

  The child-side content output unit 322 includes an audio output device such as a speaker, plays the music content acquired from the child-side content reception unit 320, and outputs sound.

  Heretofore, the functional configurations of the master wireless communication device 304 and the slave wireless communication device 306 have been described. Next, based on FIG. 10, in the wireless communication system 300, the child communication device 306 acquires setting information from the parent communication device 304, and then the parent communication device 304 stores content information in the child communication device 306. A data flow when transferring is described.

<Data Flow in Wireless Communication System 300>
Hereinafter, the parent communication device 304 transmits a list of music contents that can be transferred to the child communication device 306 by short-range wireless communication, and the content selected by the child communication device 306 is transmitted to the parent content transfer unit 310. The flow of data when transmitting is described.

  First, short-range wireless communication is started between the parent communication device 304 and the child communication device 306 (S502). Next, the child-side communication device 306 transmits a setting information acquisition request to the parent-side communication device 304 by short-range wireless communication (S504). When receiving the setting information acquisition request, the parent communication device 304 transmits the setting information held by itself to the child communication device 306 by short-range wireless communication (S506). When receiving the setting information, the slave communication device 306 can perform wireless communication via the access point 102 using the setting information.

  After transmitting the setting information in step S506, the parent communication device 304 subsequently obtains access information of the child communication device 306 to the child communication device 306 that is the transmission destination of the setting information by short-range wireless communication. A request is made (S508). In response to the request, the child communication device 306 transmits access information to the parent communication device 304 by short-range wireless communication (S510).

When the parent communication device 304 acquires the access information from the child communication device 306,
A content list (including a song name, artist name, genre, etc.) indicating a list of music contents held by the parent communication device 304 is transmitted to the child communication device 306 by short-range wireless communication (S512). The slave communication device 306 selects one or a plurality of contents from the received content list based on a user instruction (S514), and selects information (such as an ID for uniquely identifying the contents) of the selected contents in a short distance. It transmits to the master communication device 304 by wireless communication (S516).

  When receiving the selected content information, the parent communication device 304 requests connection to the child communication device 306 by wireless communication via the access point 102 using the access information acquired in S510 (S518). When the child communication device 306 transmits a connection OK response in response to the connection request (S520), wireless communication via the access point 102 between the parent communication device 304 and the child communication device 306 is performed. The process is started (S522). When the wireless communication is started, the parent communication device 304 transmits the content designated according to the selected content information received in S516 to the child communication device 306 (S524).

  As described above, in the present embodiment, the parent communication device 304 identifies the child communication device 306 that transmitted the setting information as a communication partner of wireless communication via the access point 102, and transfers the content. That is, the parent communication device 304 transfers the content to the child communication device 306 that is a partner device that has performed short-range wireless communication with the parent communication device 304. Therefore, the user can transfer the content stored in the parent communication device 304 to the child communication device 306 only by bringing the child communication device 306 closer to the parent communication device 304. For content transfer, wireless communication via an access point, which is generally faster than near field communication, is used. Therefore, music content and video content with large data sizes can be transferred efficiently. . Also, unlike near field communication, the distance between the child communication device 306 and the parent communication device 304 does not have to be kept below a predetermined distance during transfer.

  Similarly to the second embodiment, conventionally, a user sets setting information for accessing an access point in a wireless communication device, and further manually designates a partner device that performs wireless communication via the access point. Although it was necessary, according to the present embodiment, the user can perform only one action of bringing the wireless communication device (child communication device 306) closer to another wireless communication device (parent communication device 304). Setting information can be set and a communication partner can be specified. As a result, the user can easily and quickly transfer the content in the parent communication device 304 to the child communication device 306.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the second embodiment and the third embodiment, content is transmitted and received immediately after transmission and reception of setting information and access information. However, the present invention is not limited to such an example. For example, content transmission / reception may be performed after a predetermined time has elapsed after transmission / reception of setting information and access information, and content transmission / reception may be performed after the parent communication device or the child communication device receives a user instruction. It may be broken.

  In the third embodiment, the content list is transferred by short-range wireless communication. However, the content list can be transferred using a wireless LAN or the like.

  In each of the above-described embodiments, the wireless communication via the access point is described as an example of wireless communication using a wireless LAN, but the present invention is not limited to such an example. For example, the wireless communication may be wireless communication using Bluetooth or UWB (Ultra Wide Band).

100, 200, 300 Wireless communication system 102 Access point 104, 204, 304 Parent side communication device 106, 206, 306 Child side communication device 124 Parent side wireless communication unit 126 Parent side setting information storage unit 128 Setting information transfer unit 130 Near parent side Distance communication unit 142 Child side wireless communication unit 144 Child side setting information storage unit 146 Child side short-range communication unit 148 Setting information acquisition unit 210 Parent side content reception unit 212 Parent side content output unit 214 Parent side access information transmission unit 220 Child side content Transfer unit 222 Child-side transfer content designation unit 226 Child-side access information acquisition unit 310 Parent-side content transfer unit 312 Parent-side transfer content designation unit 316 Parent-side access information acquisition unit 320 Child-side content reception unit 322 Child-side content output unit 324 Child Side access information transmitter

Claims (13)

A content playback unit for playing back content data;
A content designating unit for designating the content data being reproduced by the content reproducing unit as transmission content data to be transmitted to another communication device;
A short-range communication unit that receives access information for accessing the other communication device via wireless communication from the other communication device by short-range communication different from the wireless communication;
A wireless communication unit that transmits information on the reproduction position of the content data specified by the content specification unit to the other communication device via the wireless communication based on the access information together with the content data;
A communication device comprising: The near field communication unit receives setting information for performing the wireless communication from the other communication device by the near field communication,
The wireless communication unit, have rows the wireless communication based on the setting information,
The setting information includes key information,
The communication apparatus according to claim 1, wherein the wireless communication is encrypted based on the key information . The content data is content data of music content, the communication device according to claim 1 or 2. The content data is audio content, video content, which is content data of the electronic books, games, software, or captured image content, the communication device according to claim 1 or 2. A communication method for playing back content with another communication device,
A content playback step of playing back the content data;
A content designating step of designating the content data being reproduced in the content reproducing step as transmission content data to be transmitted to another communication device;
Short-range communication step of receiving access information for accessing the other communication device via wireless communication from the other communication device by short-range communication different from the wireless communication;
A wireless communication step of transmitting information on the reproduction position of the content data specified in the content specifying step to the other communication device via the wireless communication based on the access information together with the content data;
A communication method comprising: On the computer,
A content playback step of playing back the content data;
A content designating step of designating the content data being reproduced in the content reproducing step as transmission content data to be transmitted to another communication device;
Short-range communication step of receiving access information for accessing the other communication device via wireless communication from the other communication device by short-range communication different from the wireless communication;
A wireless communication step of transmitting information on the reproduction position of the content data specified in the content specifying step to the other communication device via the wireless communication based on the access information together with the content data;
A computer program that executes A short-range communication unit that transmits access information for another communication device to access its own device via wireless communication to the other communication device by short-range communication different from the wireless communication; and
A wireless communication unit that receives content data being reproduced by the other communication device from the other communication device via the wireless communication based on the access information;
A content playback unit for playing back the content data;
With
The wireless communication unit receives information on a reproduction position of the content data reproduced by the content reproduction unit from the other communication device together with the content data.   The communication device according to claim 7, wherein the content reproduction unit reproduces the content data from a position corresponding to the reproduction position information received by the wireless communication unit. The near field communication unit transmits the setting information for performing the wireless communication to the other communication device by the near field communication,
The wireless communication unit, have rows the wireless communication based on the setting information,
The setting information includes key information,
The communication device according to claim 7 or 8 , wherein the wireless communication is encrypted based on the key information . The content data is content data of music content, the communication apparatus according to any one of claims 7-9. The communication device according to any one of claims 7 to 9 , wherein the content data is content data of audio content, video content, electronic books, games, software, or photographed image content. A communication method for playing back content with another communication device,
A short-range communication step of transmitting access information for another communication device to access its own device via wireless communication to the other communication device by short-range communication different from the wireless communication;
A wireless communication step of receiving content data being reproduced by the other communication device from the other communication device via the wireless communication based on the access information;
A content playback step of playing back the content data;
Including
In the wireless communication step, information on a reproduction position of the content data reproduced in the content reproduction step is received from the other communication device together with the content data. On the computer,
A short-range communication step of transmitting access information for another communication device to access its own device via wireless communication to the other communication device by short-range communication different from the wireless communication;
A wireless communication step of receiving content data being reproduced by the other communication device from the other communication device via the wireless communication based on the access information;
A content playback step of playing back the content data;
And execute
In the wireless communication step, a computer program that receives information on a reproduction position of the content data reproduced in the content reproduction step from the other communication device together with the content data.

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