JP2011211352A - Content transmission device, content reproducing device, communication system, control method of content transmission device, control program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily reproduce a content which a user desires.SOLUTION: A mobile phone 1 includes an application monitoring part 20 for detecting that a mobile application 10 has accessed a content, a content management part 21 for registering a content detected latest by the application monitoring part 20, and a request processing part 22 for transmitting the content registered by the content management part 21 to a television 2 when a content request for a route ID is received from the television 2. By this, the content which is thought to be desired in reproduction by the user of the mobile phone 1 by using the television 2, and handled latest by the mobile phone 1 can automatically reproduced by the television 2.

Description

  The present invention relates to a content transmission apparatus that transmits content in response to a request from a content reproduction apparatus, and more specifically, when a request is received from a content reproduction apparatus, a user desires to reproduce content that can be provided. The present invention relates to a content transmission device that transmits content that is considered to be incompatible.

  In recent years, there has been a communication system in which an apparatus for storing content such as a personal computer (hereinafter referred to as a PC) or a mobile phone functions as a content server, and a television receiver (hereinafter referred to as a TV) or the like functions as a content reproduction apparatus. It is becoming popular. A typical standard for constructing such a communication system in a home network is DLNA (Digital Living Network Alliance).

  According to the DLNA standard, a device that functions as a content server and a device that functions as a content reproduction apparatus can transmit commands to each other. Accordingly, the user can cause the content reproduction device to reproduce the content stored in the content server by controlling only the content reproduction device (see Patent Document 1 below).

  For example, when the content reproduction apparatus is a television, the television user causes the television to reproduce the content stored in the content server by operating the television with a television remote controller (hereinafter referred to as a remote controller). Can do. At this time, the user does not need to perform an operation on the content server.

  Here, since the content server normally stores a large number of contents, the user selects and reproduces desired contents from a plurality of contents. This will be described with reference to FIG. FIG. 24 is a diagram showing a conventional content selection method.

  FIG. 2A shows the appearance of the remote control. As shown in the figure, the remote controller has 1 to 12 number keys used for channel selection as operation keys for receiving user operations, a channel selection key that is a key for forward and backward channels, and a TV output. There are provided an input switching key for switching, an up / down / left / right direction key, an enter key, an end key, a return key, and blue, red, green and yellow color keys.

  FIG. 2B shows an example of a folder selection screen displayed on the television. As shown in the drawing, a list of folders to be selected such as images, music, videos, and playback lists is displayed on the right side of the screen. A cursor is displayed in the “image” folder among the folders to be selected. The folder on which the cursor is placed corresponds to the selected folder displayed on the left side of the screen.

  Furthermore, an operation guide showing the correspondence between the keys on the remote controller and the processing performed when the keys are operated is displayed at the bottom of the screen. This operation guide indicates that processing for folder selection is assigned to the enter key, the four color keys, the return key, and the end key.

  As shown in the operation guide, when the screen of FIG. 5B is displayed, the user can select the folder by placing the cursor on the desired folder and pressing the enter key. Then, by selecting a folder, the files and folders included in the folder can be displayed.

  FIG. 6C shows an example of a screen displayed when the cursor is moved to the folder and the enter key is pressed. As shown in the figure, a list of folders and files to be selected is displayed on the right side of the screen. In addition, character strings (/ My Photo / and Flower /) indicating the hierarchical structure of the folder are displayed. An image of the file on which the cursor is placed is displayed as a selected image on the left side of the screen, and an operation guide is displayed on the lower side of the screen.

  As described above, conventionally, a tree indicating a folder structure of a content server is browsed using a direction key, a determination key, a color key, or the like of a remote controller that is not generally used when receiving a television broadcast. Sought out and selected.

  Note that the folder structure as shown in the figure is acquired through communication between the content server and the content reproduction apparatus. This will be described with reference to FIG. FIG. 25 is a diagram illustrating a timing chart and an example of a screen illustrating an example of processing for selecting content to be displayed on the television.

  First, a client device that reproduces content broadcasts a response request and attribute information of the client device to each device connected via the network, and performs a server search. Then, the content server that receives this response request transmits the response and the attribute information of the own device to the client device.

  The client device that has received the response and the attribute information displays the content server specified by the received attribute information, as shown in the screen example of FIG. When the illustrated content server is selected from the displayed content servers, the client device requests ID = 0 (root ID) from the content server. As described above, a general DLNA-compatible device requests a route ID when a content request destination content server is determined.

  Then, the content server that has received the request with ID = 0 transmits, as a child ID, the ID of the folder or file immediately under the root directory with ID = 0 in the illustrated file configuration tree to the client device. Here, since there are three folders “/ Photo”, “/ Movie”, and “/ Music” immediately under “/ root”, these IDs are ID = 1000, 2000, and 3000. Send. Further, the content server transmits ID = 0 as the parent ID.

  The client apparatus that has received these IDs displays the folder name of the folder indicated by the received ID, as shown in the screen example of FIG. In addition, “return” is displayed in the screen example of FIG. This is assigned to the parent ID received from the content server. These folder names and “return” display can be selected with a cursor, as shown in FIGS.

  Here, when “Movie” is selected, the client apparatus requests an ID (2000) of “/ Movie” from the content server. Then, the content server that has received the request with ID = 2000 transmits, as a child ID, the ID of the folder or file immediately under the folder with ID = 2000 in the illustrated file configuration tree to the client device.

  Here, as shown in the file configuration tree in the figure, since it is assumed that files “gfe.wmv” and “cba.wmv” exist immediately under “/ Movie”, these IDs are used. ID = 2001 and 2001 are transmitted. Further, the content server transmits ID = 2000 as the parent ID.

  The client apparatus that has received these IDs displays the file name of the file indicated by the received ID as shown in the screen example of FIG. In addition, “return” is displayed in the screen example of FIG. This is assigned to the parent ID (2000) received from the content server. That is, by selecting “Return”, the second screen example in FIG. 7 is displayed.

  Here, when “gef.wmv” is selected, the client apparatus requests the thumbnail images with ID = 2001 and 2002 and the URI of the content with ID = 2001 from the content server. Upon receiving this request, the content server transmits thumbnail images with ID = 2001 and 2002, and also transmits the entity of the content specified by the received URI, that is, the file “gef.wmv” with ID = 2002. .

  The client device that has received them displays the received thumbnail image and an image for starting the reproduction of gef.wmv, as shown in the fourth screen example of FIG. Here, when an instruction to start playback is given, playback of gef.wmv is started as shown in the fifth screen example of FIG.

JP 2008-191779 A (released on August 21, 2008)

  As described above, in the prior art, a user traces a file tree to output desired content out of content stored in a content server to a client device that reproduces the content. And a complicated operation of requesting the content from the content server. Note that this is not limited to content servers in the DLNA standard, and is a problem that occurs in all content transmission apparatuses that transmit and output content to a content reproduction apparatus connected to an arbitrary communication network.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a content transmission apparatus that can easily output a content desired by a user to a content reproduction apparatus among contents stored in the content transmission apparatus. Is to provide.

  In order to solve the above problems, a content transmission device according to the present invention is a content transmission device that transmits content via the network in response to a request from a content reproduction device connected to the network. An access detecting means for detecting that the operating application software has accessed the content; a content registering means for registering the content detected last by the access detecting means; and when receiving a content request from the content playback device, Content transmitting means for transmitting the content registered by the content registration means to the content reproduction device is provided.

  In order to solve the above-described problem, a method for controlling a content transmission apparatus according to the present invention controls a content transmission apparatus that transmits content via the network in response to a request from a content reproduction apparatus connected to the network. An access detection step for detecting that application software operating on the content transmission device has accessed the content, a content registration step for registering the content detected last in the access detection step, and the content reproduction device And a content transmission step of transmitting the content registered in the content registration step to the content reproduction apparatus when a content request is received from the content reproduction step.

  According to the above configuration, when the content transmission device receives a content request from the content reproduction device, the content transmission device transmits the content accessed last by the application software to the content reproduction device.

  As a result, the content reproduction device can receive and output the content accessed last by the application software of the content transmission device simply by making a content request.

  Here, the access history of the application software for the content is a measure of the importance level (or the user's attention level) of the content. In other words, content that has not been accessed by application software for a long time is considered to be less important. On the other hand, the content accessed last by the application software has high importance and is highly likely to be content desired by the user.

  Therefore, according to the above configuration, it is possible to easily cause the content reproduction device to output the content desired by the user among the content stored in the content transmission device.

  In addition, the content transmission unit transmits the content registered by the content registration unit to the content reproduction device when the device receives the first content request from the content reproduction device after connecting to the network. It is preferable to do.

  According to the above configuration, when the first content request is received after connecting to the network, the content accessed last by the application software is transmitted to the content reproduction apparatus.

  Therefore, according to the configuration described above, the content reproduction apparatus can receive the content accessed last by the application software by the first content request, and can receive other content by subsequent content requests. it can.

  Further, it is preferable that the content transmitting unit transmits the content registered by the content registration unit to the content reproduction device when receiving a content request for the root directory of the own device from the content reproduction device.

  According to the above configuration, when the content request for the root directory is received, the content accessed last by the application software is transmitted to the content reproduction apparatus. That is, here, it is assumed that the content reproduction apparatus manages the content in a hierarchical structure.

  Here, as described in [Background Art], many general content reproduction apparatuses first make a content request to the root directory. When a root directory object (file and folder) is transmitted in response to a content request for the root directory, it is difficult for the user to reach the desired content.

  According to the configuration of the present invention, even a general content playback apparatus that makes a content request for the root directory can easily receive the content accessed last by the application software. Then, other content can be received by a content request for other than the root directory.

  In addition, the content transmission device stores a correspondence list in which key identification information corresponding to an operation key included in an operation device that operates the content reproduction device and attribute information indicating content attributes are associated with each other. And content association means for referring to the attribute information of the correspondence list and associating the content having the attribute indicated by the attribute information with the key identification information, and the content transmission means from the content reproduction device to the key When the identification information is received, the content association unit preferably transmits the content associated with the key identification information to the content reproduction apparatus.

  According to the above configuration, using the correspondence list in which the key identification information and the attribute information are associated with each other, the key identification information is associated with the attribute content indicated by the attribute information associated with the key identification information. It is done. When the key identification information is received, the content associated with the received key identification information is transmitted to the content reproduction apparatus.

  Therefore, the content reproduction apparatus can receive the content having the attribute corresponding to the key identification information by transmitting the key identification information. In addition, since the key identification information corresponds to an operation key included in the operation device that operates the content reproduction device, the content reproduction device determines that the operation key is operated when confirming that the operation key is operated. Corresponding key identification information can be transmitted to the content transmission device.

  In other words, according to the above configuration, it is possible to transmit content having a specific attribute from the content transmission device to the content reproduction device by operating the operation key of the operation device. As a result, the user can cause the content reproduction device to output content having a desired attribute by a simple operation of operating the operation key of the operation device.

  Moreover, the said attribute should just become an parameter | index for searching a content. It may indicate the type of content, may be an acquisition route, may indicate the state of the content, or a combination thereof. Examples of content types include moving images, still images, audio, and text. Also, content classification may be performed by extension. Examples of the acquisition route include download, reception by e-mail, reception from another device, shooting and recording, generation by the own device by character input, and the like. Examples of the content state include an unreproduced state (a state where neither image display nor audio output is performed), a bookmarked state, and the like. In addition to these, for example, the storage location of the content may be the above attribute.

  The list storage unit stores a plurality of correspondence lists, and the key identification information included in each correspondence list includes correspondence list specifying information for specifying the correspondence list including the key identification information. And a key identification information transmitting means for transmitting the key identification information included in the requested correspondence list to the content reproduction device when a request for one of the plurality of correspondence lists is received from the content reproduction device. It is preferable.

  When there are multiple correspondence lists, to identify the content to be transmitted when key identification information is received from the content playback device, specify which correspondence list the key identification information is included in There is a need to.

  According to the above configuration, since the key identification information includes the correspondence list specifying information, it is possible to specify in which correspondence list the key identification information received from the content reproduction device is included.

  According to the above configuration, when a request for the correspondence list is received, the key identification information included in the correspondence list is transmitted to the content reproduction apparatus. Accordingly, the content reproduction apparatus can receive the content by selecting the key identification information corresponding to the content having the desired attribute from the key identification information received from the content transmission apparatus and transmitting the selected key identification information to the content transmission apparatus. .

  In addition, when the content transmission device receives the request for switching the correspondence list from the content reproduction device, the content transmission device stores list identification information for specifying each of the plurality of correspondence lists stored in the list storage unit. It is preferable to provide list identification information transmitting means for transmitting to the content reproduction apparatus.

  According to the above configuration, when the list switching request is received, the list identification information is transmitted to the content reproduction apparatus. Thereby, the content reproduction apparatus can specify the correspondence list that is a candidate for switching.

  Further, the content reproduction device can receive the key identification information included in the correspondence list by transmitting the identified correspondence list to the content transmission device. Then, the key identification information corresponding to the content having the desired attribute can be transmitted to the content transmitting apparatus, and the content can be received.

  The key identification information transmission means includes a key included in one correspondence list selected from a plurality of correspondence lists stored in the list storage unit when the correspondence list switching request is received from the content reproduction device. The identification information is preferably transmitted to the content reproduction device.

  According to the above configuration, when a list switching request is received, one corresponding list is selected, and key identification information included in the corresponding list is transmitted to the content reproduction apparatus. Therefore, the content reproduction apparatus can receive the content by transmitting the key identification information corresponding to the content having the desired attribute from the received key identification information to the content transmission apparatus.

  In addition, the content transmission device transmits a list transmission unit that transmits a plurality of the correspondence lists to the content reproduction device, and list designation information that designates one of the correspondence lists transmitted by the list transmission unit to the content reproduction device. It is preferable to include a list designation information transmitting means for transmitting.

  According to the above configuration, the correspondence list is transmitted to the content reproduction device. Thus, the content reproduction apparatus can receive the content associated with the key identification information in the content transmission apparatus by transmitting the key identification information included in the received correspondence list to the content transmission apparatus.

  Moreover, according to said structure, list designation | designated information is transmitted to a content reproduction apparatus. Thereby, the content reproduction apparatus can recognize which correspondence list key identification information should be transmitted.

  In order to solve the above problems, the content playback apparatus of the present invention transmits a content request to the content transmission apparatus via the network and receives the content transmitted in response to the content request. An apparatus is characterized by comprising content requesting means for transmitting a content request to the content transmitting apparatus, and content reproduction means for reproducing the content received in response to the content request of the content requesting means.

  The content reproduction device transmits a content request to the content transmission device. As described above, in response to the content request, the content transmission device transmits the content accessed last by the application software of the device itself.

  That is, the content reproduction device receives the content accessed last by the application software of the content transmission device by transmitting a content request to the content transmission device. The content playback apparatus plays back the received content.

  Therefore, according to the above-described configuration, the user is considered to have high importance among the contents stored in the content transmission device only by causing the content reproduction device to transmit a content request to the content transmission device. The content accessed last by the application software can be played back by the content playback device.

  In order to solve the above problem, another content reproduction device of the present invention transmits a content request to the content transmission device via the network and receives content transmitted in response to the content request. A content playback device, wherein key identification information association means for associating the key identification information with an operation key of the operation device, and an operation key indicated by the operation signal when the operation signal is received from the operation device Content request means for transmitting the requested key identification information to the content transmission device and requesting the content; and content reproduction means for reproducing the content received in response to the content request of the content request means. It is said.

  According to said structure, key identification information is matched with the operation key of the said operating device. When the operation signal is received from the operation device, the key identification information associated with the operation key indicated by the operation signal is transmitted to the content transmission device to request the content, and the received content is reproduced in response to the request. .

  Here, as described above, the content transmission device that has received the key identification information transmits the content having the attribute corresponding to the key identification information to the content reproduction device. That is, according to the above configuration, the user can cause the content reproduction apparatus to reproduce content having a desired attribute simply by operating the operation key of the operation apparatus.

  Still another content reproduction device of the present invention is a content reproduction device that transmits a content request to the content transmission device via the network and receives the content transmitted in response to the content request. Correspondence information generating means for generating correspondence information in which the key identification information transmitted by the key identification information transmission means of the transmission device is associated with the list identification information for identifying the correspondence list including the key identification information; When one is selected, the correspondence information is referred to, key identification information associated with the list identification information of the selected correspondence list is identified, and the identified key identification information is used as the operation key of the operation device. A key identification information associating means associated with the operation key indicated by the operation signal when the operation signal is received from the operation device. Content requesting means for requesting content by transmitting the attached key identification information to the content transmitting device, and content playback means for playing back the content received in response to the content request of the content requesting means. It is a feature.

  According to said structure, the corresponding information which matched the received key identification information with list | wrist identification information is produced | generated. When the correspondence list is selected, the correspondence information is referred to, and the key identification information associated with the list identification information of the selected correspondence list is associated with the operation key of the operation device.

  That is, according to the above configuration, when the correspondence list is selected, if the key identification information of the selected correspondence list has been received in the past and the correspondence information of the key identification information has been generated, the content transmitting apparatus The key can be associated with the operation key without obtaining the key identification information. As a result, the number of communications with the content transmission apparatus can be reduced, and quick association can be performed.

  In addition, if the communication system includes the content transmission device and the content reproduction device, the same effects as the content transmission device or the content reproduction device can be obtained.

  The content transmission apparatus may be realized by a computer. In this case, a control program for realizing the content transmission apparatus by a computer by causing the computer to operate as each unit of the content transmission apparatus, and A computer-readable recording medium on which it is recorded also falls within the scope of the present invention.

  As described above, the content transmission apparatus according to the present invention includes an access detection unit that detects that application software operating on the own device has accessed the content, and a content registration unit that registers the content detected last by the access detection unit. And a content transmission means for transmitting the content registered by the content registration means to the content reproduction apparatus when a content request is received from the content reproduction apparatus.

  The content transmission apparatus control method according to the present invention includes an access detection step for detecting that application software operating on the content transmission apparatus has accessed the content, and a content registration for registering the content detected last in the access detection step. And a content transmission step of transmitting the content registered in the content registration step to the content reproduction device when a content request is received from the content reproduction device.

  According to the above configuration, when the content transmission device receives a content request from the content reproduction device, the content transmission device transmits the content accessed last by the application software to the content reproduction device. Therefore, the content desired by the user among the contents stored in the content transmission device can be easily output to the content reproduction device.

It is a figure which shows one Embodiment of this invention, and is a block diagram which shows an example of the principal part structure of the mobile telephone and television which comprise a communication system. It is a figure which shows the outline | summary of the said communication system. It is a figure which shows the example of assignment of the content to the number key of the remote control which operates the said television. It is a flowchart which shows an example of the content management process which the said mobile telephone performs. It is a figure which shows an example of the content management information and correspondence list which are used with the said communication system. In the said communication system, it is a figure which shows the timing chart and example of a screen which show an example of the process which displays last content automatically. In the communication system, it is a diagram showing a timing chart and an example of a screen showing an example of processing for selecting a correspondence list from a mode list with a remote controller, selecting content from a selected correspondence list, and outputting to a television. It is a figure which shows an example of the screen displayed when the said television receives each ID and thumbnail image of DefaultKeyIDList. FIG. 8 is a diagram illustrating a continuation of the processing in FIG. 7, and is a diagram illustrating a timing chart and an example of a screen illustrating an example of processing for selecting content from the BookmarkedContentsIDList and displaying the content on the television. It is a figure which shows an example of the screen displayed when the said television receives each ID and thumbnail image of BookmarkedIDList. In the said communication system, it is a figure which shows an example of the screen transition in the case of performing mode switching by a mode list. It is a figure which shows an example of the content management information used when not displaying a mode list | wrist and a corresponding list. It is a figure which shows the timing chart and example of a screen which show an example of the process which outputs a content to a television with a remote control, when switching modes, without displaying a mode list. It is a figure which shows the timing chart and screen example which show the continuation of the process of FIG. 13, and is a figure which shows the example which switches a corresponding list, without displaying a mode list. It is a figure which shows an example of a screen transition in case mode switching is performed with the 11th number key. It is a flowchart which shows an example of the process which the said mobile telephone performs. It is a flowchart which shows an example of the process which the said television performs. It is a flowchart which shows an example of the request response process which the said mobile telephone performs. It is a flowchart which shows an example of the operation signal corresponding | compatible process which the said television performs. It is a figure which shows an example of the corresponding | compatible list | wrist and content management information which are used in the modification of this invention. It is a figure which shows the timing chart and example of a screen which show an example of the process in the said modification. It is a figure which shows the example of a screen for demonstrating the page switching in the said communication system. It is a figure which shows the example of a display of the allocation result at the time of using the corresponding list which allocates the content for every application to a number key. It is a figure which shows a prior art and is a figure which shows the conventional content selection method. It is a figure which shows a prior art, and is a figure which shows the timing chart and example of a screen which show an example of the process which selects a content and displays it on a television.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

[Outline of communication system]
Here, an overview of the communication system of the present embodiment will be described based on FIG. FIG. 2 shows an outline of the communication system 100 according to the embodiment of the present invention.

  The communication system 100 is a system in which a content server and a content reproduction apparatus are connected by communication. The content reproduction apparatus requests content from the content server and outputs the received content in response to the request. In the illustrated example, the communication system 100 includes a cellular phone (content transmission device) 1 as a content server, and a television receiver (content reproduction device) 2 (hereinafter referred to as a television 2) as a content reproduction device. . In addition, a device for operating the television 2 includes a remote controller (operation device) 3 (hereinafter referred to as a remote controller 3), and a router 4 is included as a device for relaying communication between the mobile phone 1 and the television 2.

  Note that the communication system 100 is not limited to the illustrated example as long as it includes at least one content server and one content reproduction device that are connected to each other. The content reproduction device may be any device that acquires and outputs content from a content server, and may be, for example, a personal computer (hereinafter referred to as a PC). The content playback device may be any device that transmits content upon receiving a request from the content playback device, and may be a portable music player, a PDA (Personal Digital Assistance), a portable game machine, a notebook PC, or the like. Good. Moreover, a stationary apparatus may be used.

  In addition, here, it is assumed that each device included in the communication system 100 is a device that complies with the DLNA standard and communicates with each other according to the DLNA standard. That is, here, it is assumed that the communication system 100 is constructed by a home network using DLNA. Note that the communication system 100 is not limited as long as the content reproduction device can request content from the content server and receive the content transmitted in response to the request, and is constructed by a communication network that does not comply with the DLNA standard. It does not matter.

  The cellular phone 1 is a portable terminal device that transmits and receives voice calls, e-mails, and the like via a cellular phone network. In addition to the general function as a mobile phone, the mobile phone 1 also has a function as a content server that transmits content to the television 2 in response to a request from the television 2.

  The television 2 is a television receiver that receives and outputs a broadcast program. The television 2 also functions as a DLNA client device. Specifically, the television 2 receives content transmitted by other devices included in the communication system 100 and presents the content to the user. That is, the television 2 has a broadcast output mode for receiving and outputting a broadcast program, and a content reproduction mode for receiving and reproducing content. These modes can be switched.

  The content presentation method varies depending on the type of content. Here, it is assumed that the television 2 presents three types of content: a still image, a moving image, and audio. That is, when the content is a still image, the television 2 receives and displays an image file. When the content is a moving image, the television 2 receives and displays a moving image file and outputs sound as necessary. In the case of voice, it is presented to the user by receiving the voice file and outputting the voice. Of course, the content supplied to the television 2 is not limited to these examples, and a method according to the type of content can be appropriately adopted as the content presentation method.

  The remote controller 3 is an input device for remotely operating the television 2. Specifically, by operating a plurality of operation keys provided on the remote controller 3, channel selection operation (channel switching) of the television 2 or content transmitted by other devices included in the communication system 100 is transmitted to the television 2. An input or the like for reproduction (presentation) can be performed.

  The router 4 is a relay device that relays communication between devices included in the communication system 100. Here, as shown in the figure, the router 4 is wirelessly connected to the mobile phone 1 and wired to the television 2, thereby relaying communication between the mobile phone 1 and the television 2.

  The communication system 100 having the above configuration allows the television 2 to output content that the user thinks that the user desires to reproduce among the content stored in the mobile phone 1 by a simple input operation from the remote controller 3. It has the feature that it can.

  That is, as shown in the figure, when content is displayed on the mobile phone 1 and then the input of the TV 2 is switched with the remote control 3 to switch the TV 2 to the content playback mode, application software (hereinafter, referred to as the mobile phone 1) is operated. The content accessed last by the application) is automatically displayed on the television 2. Hereinafter, such content is referred to as last content.

  Note that the last content is content that has been subjected to predetermined processing by the application regardless of whether the content has been reproduced or displayed. Specifically, content stored last in the mobile phone 1 by an app that acquires or generates content, content that was last played by an app that reproduces content, content that was bookmarked last by an app, and the like can be given. .

  In a terminal device such as the mobile phone 1, content is usually acquired and accessed one after another by many apps, so information indicating the timing when the content is accessed by the app is an index indicating the importance of the content. Become.

  Note that the date and time when the content is accessed can be specified by monitoring a file system of an OS (Operating System), for example. However, the access date and time acquired from the OS file system merely indicates that the content creation date and update date are new, and is sufficient as an index for identifying the content that the user wants to play. Absent.

  For example, when the access date and time is acquired from the OS file system, when the photograph is downloaded from the website immediately after the photograph is taken by the camera provided in the mobile phone 1, the downloaded photograph becomes the last content.

  Here, when a picture is taken with the mobile phone 1, it is considered that there are many users who want to immediately display the picture on the television 2 in order to show the picture to the family, for example. On the other hand, there are cases where the contents of the downloaded photos may not be understood, so we would like to check the contents in advance with the photo viewer on the mobile phone 1 to see if it is appropriate for the family. It is thought that there are many users who do. That is, in this case, it is preferable that the photograph taken by the camera is used as the last content rather than the downloaded photograph with the latest update date and time.

  When the access date / time is acquired from the OS file system, it is impossible to make the last photo the photo taken by the camera, rather than the downloaded photo with the latest update date / time. The date and time of access to is used to identify the last content. Thereby, it becomes possible to specify the last content depending on when and which application accessed, and it is possible to increase the possibility that the content desired by the user is set as the last content.

  As described above, since the last content is highly likely to be content that the user is interested in and the user desires to reproduce, the last content is automatically displayed on the television 2 to improve the convenience of the user. Can be increased.

  In the communication system 100, content other than the last content can be easily selected by the remote controller 3 and output to the television 2. That is, as described in the table of the figure, contents are assigned to the number keys 1 to 12 of the remote controller 3. Here, since it is assumed that the content reproduction apparatus is the television 2, such an assignment is performed. However, an assignment to an arbitrary key corresponding to an operation device that operates the content reproduction apparatus is performed. be able to.

  Then, as shown in the figure, by operating the red button (red key) of the remote controller 3, the manner in which contents are assigned to the number keys defined in the above table is displayed on the television 2. Thereby, the user can easily recognize what content the number key of the remote controller 3 is assigned to. Then, by operating the number key of the remote controller 3, the content assigned to the key can be transmitted from the mobile phone 1 to the television 2 and output to the television 2.

  In this way, in the communication system 100, content can be selected and output to the television 2 with the number keys of the remote controller 3. Thus, the user can switch the content with the same feeling as when switching the TV channel.

[Assignment to number keys]
Next, content allocation to the number keys of the remote controller 3 will be described with reference to FIG. FIG. 3 is a diagram showing an example of content allocation to the number keys of the remote controller 3.

  As shown in the figure, the contents of the mobile phone 1 are assigned to the number keys of the remote controller 3. When the content stored in the mobile phone 1 is reproduced on the television 2, that is, in the content reproduction mode, the user selects the content with the number key of the remote controller 3. As a result, the selected content is transmitted from the mobile phone 1 to the television 2 and output on the television 2.

  For example, the content of “moving image attached to received mail” is assigned to the number key “6” of the remote controller 3. For this reason, when the number key “6” on the remote controller 3 is pressed, the moving image attached to the e-mail received by the mobile phone 1 is transmitted to the television 2 and reproduced on the television 2.

  In the communication system 100, such assignment is performed using a correspondence list in which an ID corresponding to a number key of the remote controller 3 and information for specifying content to be assigned to the ID are associated with each other. Further, in the communication system 100, a plurality of correspondence lists are used, and the user is allowed to select content while switching the correspondence list.

  That is, the content assigned to the number key can be switched by switching the correspondence list. Thereby, the user can select a desired content from a large number of contents using the number keys of the remote controller 3. In the following, a state in which assignment based on each correspondence list is performed is referred to as a mode.

  In addition, the remote controller 3 is provided with a channel selection key that is a key for switching channels in ascending order or descending order of number keys. And the content which the television 2 outputs can also be changed using this channel selection key.

  The content change using the channel selection key is based on the number key based on a signal transmitted from the remote controller 3 when the channel selection key is operated to change the broadcast program to be selected in the order of the number key. This is realized by specifying. That is, it is possible to specify the number key by storing the last input number key and replacing the channel selection operation for forward or backward broadcasting program with forward or backward number key.

  For example, when the TV 6 receives an operation signal indicating that the “6” number key of the remote controller 3 is pressed and the “6” number key is pressed, the “6” number key is stored. . Thereafter, when the broadcast program is reversely sent with the channel selection key, the television 2 receives a signal indicating that an operation for reversely sending the broadcast program to be selected has been performed. At this time, it is determined that the channel selection for the number key “5” obtained by reversely feeding the stored number key “6” has been performed. As a result, the content “photo attached to the received mail” assigned to the number key “5” is transmitted to the television 2 and reproduced on the television 2.

  As described above, in the communication system 100, information for specifying the content is associated with the broadcast program channel number key. When a channel selection operation is performed with the remote controller 3 in the content reproduction mode, the content associated with the number key corresponding to the channel selection operation is transmitted from the mobile phone 1 to the television 2 and reproduced.

  Therefore, the user of the communication system 100 can view desired content on the television 2 simply by pressing the number key or the channel selection key of the remote controller 3. That is, in the communication system 100, the content stored in the server 3 and the mobile phone 1 can be played back on the television 2 by the same operation as the channel switching of the television, and even a user who is unfamiliar with the tree format display. Easy to operate.

  The target to be assigned to the number key may be anything that can identify the content that the television 2 requests from the mobile phone 1. For example, as shown in the example of FIG. 3, a content attribute may be assigned, or a folder or file of the mobile phone 1 may be assigned.

  Although an example of assigning to the number keys of the remote controller 3 will be described here, assignment to the channel numbers may be performed. In short, it suffices that assignment is performed so that a request for content corresponding to the channel selection operation is performed when the channel selection operation is performed with the remote controller 3.

[Configuration of main parts of each device constituting communication system 100]
Next, the configuration of the main part of each device constituting the communication system 100 will be described with reference to FIG. FIG. 1 is a block diagram illustrating an example of a main configuration of the mobile phone 1 and the television 2 that constitute the communication system 100.

  As shown in the figure, the mobile phone 1 includes a mobile application (application software) 10, an operation unit 11, a display unit 12, a mobile control unit 13, a mobile storage unit 14, and a communication unit 15.

  The mobile application 10 is an application that operates on the mobile phone 1. Here, as shown, a file viewer that displays files, a music player that plays audio files, a photo viewer that displays image files, a video viewer that plays video files, and a mailer that sends and receives and displays e-mails, etc. Assume that the app is included. Of course, the application included in the mobile application 10 is not limited to these examples.

  The operation unit 11 receives user input operations. The operation unit 11 only needs to be capable of accepting a user's input operation. For example, the operation unit 11 may be configured with a key, a button, or a touch panel.

  The display unit 12 displays an image. The display part 12 should just be what displays an image according to control of the portable application 10 or the portable control part 13, and may be comprised with a liquid crystal display device, an organic EL (Electro Luminescence) display apparatus, etc., for example.

  The mobile control unit 13 controls the operation of the mobile phone 1 in an integrated manner. As shown in the figure, an application monitoring unit (access detection unit) 20, a content management unit (content registration unit, content association unit) 21. , And a request processing unit (content transmitting unit, key identification information transmitting unit, list identification information transmitting unit) 22.

  The application monitoring unit 20 monitors the operation of the mobile application 10 to detect that the mobile application 10 has performed a predetermined process related to content, and notifies the content management unit 21 to that effect. Specifically, when the application monitoring unit 20 detects a predetermined process, the application monitoring unit 20 notifies the content management unit 21 of the detected process, the application that has performed the process, and the ID of the content that is the target of the process. .

  The predetermined process is a process related to specifying the last content and updating (generating) the correspondence list. Here, it is assumed that the process related to the specification of the last content is a content reproduction (display and / or audio output) process and a process of bookmarking the content. Of course, since the last content is the content that was last accessed by the application, the predetermined processing is not limited to these examples. Processing related to the update (generation) of the correspondence list will be described later.

  The content management unit 21 manages the content stored in the portable storage unit 14 and the correspondence list. Specifically, the content management unit 21 assigns an ID to the newly stored content, deletes the ID from the deleted content, registers the last content, and registers the content based on the correspondence list by a content management process described later. Perform association and the like.

  The request processing unit 22 performs processing corresponding to a request from a content reproduction device (for example, the television 2). Specifically, when receiving a content request for the root directory from the content reproduction device, the request processing unit 22 transmits the last content to the content reproduction device.

  Further, the request processing unit 22 responds to a request from the content reproduction device based on the correspondence list. For example, when an assignment based on a certain correspondence list A is performed (when the mode of the correspondence list A is set), when a request for an ID included in the correspondence list A is received, the request processing unit 22 The content management unit 21 transmits the content associated with the ID of the correspondence list A to the content reproduction device.

  The mobile storage unit 14 stores various data used in the mobile phone 1, and includes a content storage unit 30, content management information 31, and a list storage unit 32.

  The content storage unit 30 stores content to be transmitted to the content reproduction device. All contents stored in the content storage unit 30 are assigned IDs by the content management unit 21. In addition, the content storage unit 30 stores folders and files with a hierarchical structure, and each folder is assigned an ID by the content management unit 21.

  The content management information 31 is information for managing the content stored in the content storage unit 30. Specifically, the content management information 31 is information in which each content stored in the content storage unit 30 is associated with its ID. In the content management information 31, the last content is registered with an ID (LastID) unique to the last content, and an ID for switching the correspondence list is registered. Note that the ID for switching the correspondence list may be managed separately from the content management information 31.

  The list storage unit 32 stores a correspondence list in which an ID corresponding to a number key of the remote controller 3 is associated with information for specifying content to be assigned to the ID. The correspondence list is managed with a unique ID. The list storage unit 32 also stores a list including the ID of each corresponding list stored.

  The communication unit 15 is for the mobile phone 1 to communicate with other devices included in the communication system 100. Here, it is assumed that the communication unit 15 performs communication according to the DLNA standard.

  In addition, the television 2 includes a display unit 40, an operation unit 41, a television control unit 42, a communication unit 43, a television storage unit 44, and an operation signal reception unit 45 as illustrated.

  The display unit 40 displays images according to instructions from the television control unit 42. The display unit 40 displays a video of a broadcast program received by the television 2, content received from a content server such as the mobile phone 1, and the like. The display unit 40 only needs to display an image according to the control of the television control unit 42, and may be configured with a liquid crystal display device, an organic EL (Electro Luminescence) display device, or the like, for example.

  The operation unit 41 receives user input operations. The operation unit 41 may be any unit that can accept a user input operation, and may be configured with, for example, a key or a button.

  The television control unit 42 controls the operation of the television 2 in an integrated manner. The television control unit 42 includes a request execution unit (content request unit, key identification information association unit, correspondence information generation unit) 50, A content reproduction unit (content reproduction unit) 51 is included.

  The request execution unit 50 transmits a request to a content server (for example, the mobile phone 1) based on an operation signal from the remote controller 3 or an input operation from the operation unit 41. Further, the request execution unit 50 associates the ID received from the content server with the operation key of the remote controller 3. When an operation signal based on the operation of the operation key is received from the remote controller 3, the ID associated with the operation key is requested to the content server.

  Furthermore, the request execution unit 50 generates correspondence information that associates the ID of the correspondence list with each ID included in the correspondence list received from the mobile phone 1. Here, when it is determined from the operation signal received from the remote controller 3 that the correspondence list has been selected, each ID included in the selected correspondence list is identified with reference to the correspondence information. Further, the request execution unit 50 assigns the identified ID to the operation key of the remote controller 3. Thereby, even if ID is not received from the mobile telephone 1, it can assign to an operation key.

  The content reproduction unit 51 reproduces content according to an instruction from the request execution unit 50. Specifically, when receiving an instruction to reproduce image content (still image, moving image, document, etc.), the content reproduction unit 51 displays the content on the display unit 40 and, if necessary, from a speaker (not shown). Output audio. Also, when an audio content playback instruction is received, the content is played back and output as audio from a speaker (not shown).

  The communication unit 43 is for the television 2 to communicate with other devices included in the communication system 100. Here, it is assumed that the communication unit 43 communicates with the mobile phone 1 in accordance with the DLNA standard.

  The television storage unit 44 stores various data used in the television 2. As illustrated, the television storage unit 44 includes a list storage unit 60. The list storage unit 60 stores correspondence information generated by the request execution unit 50.

  The operation signal receiving unit 45 receives the operation signal transmitted by the remote controller 3 and notifies the request execution unit 50 of the television control unit 42 of the command indicated by the received operation signal. For example, when the number key of the remote controller 3 is pressed, an operation signal indicating the pressed number key is transmitted from the remote controller 3, and the operation signal receiving unit 45 receives this operation signal and executes the key number request. Notify unit 50.

[Content management processing]
The content management process performed by the content management unit 21 will be described with reference to FIG. FIG. 4 is a flowchart illustrating an example of the content management process.

  The application monitoring unit 20 monitors that the mobile application 10 performs a predetermined process related to content (S1). When it is detected that the process has been performed (YES in S1), information indicating the detected process, information indicating the application that has performed the process, and the ID of the content to be processed are stored in the content management unit 21. Notice.

  When receiving the information indicating the process, the information indicating the application, and the notification of the content ID from the application monitoring unit 20, the content management unit 21 confirms whether the content of the process is the reproduction of the content (S2). If it is confirmed that the content is to be played back (YES in S2), the content management unit 21 assigns the last ID to the played content and registers it as the last content (S3), and the process of S4 Proceed to Two IDs are assigned to the content to which the LastID is assigned. On the other hand, when it is confirmed that the content is not reproduced (NO in S2), the process proceeds to S4 without performing S3.

  Even when the content of the process is content bookmark, content generation, or content storage, the content may be registered as the last content. Further, whether to register the last content may be changed according to the application detected by the application monitoring unit 20.

  For example, when an application that downloads content from a website receives a notification that the content has been downloaded to the mobile phone 1 from the app monitoring unit 20, the content management unit 21 does not register the content as the last content. It may be. This is because the user may not be able to recognize what kind of content the downloaded content is, and it may be undesirable that such content is suddenly reproduced on the television 2.

  Further, for example, when the last content is registered, information indicating an application that has played the last content may be registered. Then, by setting a priority for each application, content reproduced by a specific application may be set as the last content with priority over content reproduced by another application.

  That is, when the content management unit 21 receives information indicating that content playback processing has been performed, information indicating an application, and notification of a content ID from the application monitoring unit 20, the content management unit 21 has played the current last content. Check the app. Then, the priority of the application is compared with the priority of the application notified from the application monitoring unit 20 this time. If the priority of the application notified this time is high, the last content is updated. It may be.

  As a result, the last content can be determined not only depending on whether the access to the content is early or late, but also depending on which application accessed the content and when the content is accessed. It becomes possible to increase.

  In S4, the content management unit 21 confirms whether or not the content management information 31 needs to be updated based on the process, the application, and the content ID notified from the application monitoring unit 20. If it is confirmed that the content management information 31 needs to be updated (YES in S4), the content management unit 21 updates the content management information 31 and proceeds to the process of S6.

  For example, when a process for adding content is detected, the content management unit 21 updates the content management information 31 by assigning an ID to the added content. Also, for example, when a process for deleting content is detected, the content management information 31 is updated by deleting the ID of the deleted content.

  On the other hand, when it is confirmed that the content management information 31 does not need to be updated (NO in S4), the content management unit 21 proceeds to the process of S6 without updating the content management information 31.

  In S6, the content management unit 21 confirms whether the correspondence list needs to be updated. If it is confirmed that the correspondence list needs to be updated (YES in S6), the content management unit 21 updates the correspondence list (S7), and the process returns to S1. On the other hand, when it is confirmed that it is not necessary to update the correspondence list (NO in S6), the content management unit 21 returns to S1 without updating the correspondence list.

  The update of the correspondence list refers to updating the content associated with the ID of the correspondence list. For example, when a photograph is taken and stored in the content storage unit 30, the content associated with the “recently taken photograph” is updated to the taken photograph.

[Specific Examples of Content Management Information 31 and Correspondence List]
Next, specific examples of the content management information 31 and the correspondence list will be described with reference to FIG. FIG. 5 is a diagram showing an example of the content management information 31 and the correspondence list.

  As illustrated, the content management information 31 is information in which an ID is associated with each folder and content. Note that this folder is a folder in the content storage unit 30, and the content is content stored in the content storage unit 30. In the figure, as shown in a tree format, contents are stored and managed hierarchically.

  In the content management information 31, one of the contents stored in the content storage unit 30 is registered as the last content. In the illustrated example, “007.jpg” is registered as the last content.

  Further, the content management information 31 includes an ID for mode switching (corresponding list switching). In the example shown in the figure, “ChangeModeID” with ID = 09999 corresponds to the ID for mode switching.

  In addition, the illustrated example includes a list “KeyIDList”. KeyIDList is a list indicating an ID assigned to each corresponding list stored in the list storage unit 32. By using this KeyIDList, a plurality of correspondence lists can be switched.

  Specifically, in the illustrated KeyIDList, 99 corresponding to 99 of “DefaultKeyIDList”, “UnplayedPhotoIDList”, “UnplayedMusicIDList”, “UnplayedMovieIDList”, and 99 of 99, and 99 of BookMarkedContentsID99 are 99. Each is associated. With this correspondence list, it is possible to switch contents with the number keys of the remote controller 3.

  FIG. 5 illustrates the specific contents of DefaultKeyIDList and BookmarkedContentsIDList out of these correspondence lists.

  In the illustrated DefaultKeyIDList, ID = 0101 to 101010 are associated with the number keys 1 to 10 of the remote controller 3. The second number of this ID matches the first number of the ID of the DefaultKeyIDList. Thereby, it is possible to specify that ID = 01011-101010 is an ID corresponding to the DefaultKeyIDList. The last two digits of ID = 01011-101010 correspond to the number keys of the remote controller 3. Thereby, the television 2 which received each ID can determine which ID is allocated to which operation key. That is, the ID included in the correspondence list includes information for identifying the correspondence list and information for identifying the operation key.

  Also, content is assigned to each of these IDs. Specifically, last content, unreproduced photos, unreproduced music, and the like are assigned to each. These contents are allocated by the above-described content management process (see FIG. 4).

  For example, when content is played back, the last content changes, and accordingly, the content assigned to ID = 01001 is updated. Further, for example, when a new photo is added to the content storage unit 30 by taking a photo or the like, the ID of the photo is assigned to ID = 01002 corresponding to an unreproduced photo.

  Further, ChangeModeID (ID = 09999) is associated with the number 11 key. Thus, mode switching (switching of the corresponding list to be used) can be performed by operating the number 11 key.

  Further, a route ID (ID = 0) is associated with the 12th number key. This makes it possible to request a route ID by operating the number 12 key. When requesting the root ID, as shown in FIG. 25, the IDs of the files and contents immediately under the root directory are received.

  Also, in the illustrated BookmarkedContentsIDList, ID = 05001 to 50010 are associated with the number keys 1 to 10 of the remote controller 3. Content is assigned to each of these IDs. Specifically, each bookmarked content is assigned. These contents are also assigned by the above-described content management process (see FIG. 4).

  For example, when a content is registered as a bookmark, the bookmarked content is assigned to an ID of ID = 05001-05010 to which no content is assigned. If all IDs have been assigned, the bookmarked content is assigned instead of one of the assigned IDs.

  Similarly to the Default Key IDList, the 11th number key is associated with ChangeModeID (ID = 09999), and the 12th number key is associated with the route ID (ID = 0).

  Similarly to the above correspondence list, IDs and number keys are associated with Unprinted PhotoIDList, UnplayedMusicIDList, and UnplayedMovieIDList, and content corresponding to the correspondence list is assigned to the ID. That is, unplayed photos are assigned in UnplayedPhotoIDList, unplayed audio content is assigned in UnplayedMusicIDList, and unplayed video content is assigned in UnplayedMovieIDList.

[Specific example of processing to automatically display the last content]
Next, a specific example of processing for automatically displaying the last content will be described with reference to FIG. FIG. 6 is a timing chart and an example of a screen showing an example of processing for automatically displaying the last content. Here, it is assumed that the content management information 31 and the correspondence list shown in FIG. 5 are used.

  First, the television 2 broadcasts a response request (response request) and attribute information of the television 2 to each device included in the communication system 100, and performs a server search. The mobile phone 1 that has received the response request transmits the response and the attribute information of the terminal itself to the television 2.

  The television 2 that has received the response and the attribute information displays a server specified by the received attribute information, as shown in the screen example of FIG. In the illustrated example, it is assumed that responses and attribute information have been received from three servers: PC001, NAS (Network Attached Storage) 001, and Mobile001. Among these, Mobile001 corresponds to the mobile phone 1.

  When Mobile001, that is, the mobile phone 1 is selected from the displayed servers, the television 2 requests the mobile phone 1 for ID = 0 (route ID). Then, the mobile phone 1 that has received the request with ID = 0 transmits ID = 01001 as the child ID. This ID = 01001 is the LastID.

  In addition, the mobile phone 1 transmits the content content to which the LastID is assigned, that is, the last content to the television 2. Furthermore, the cellular phone 1 transmits ID = 09999 as the parent ID. Here, since it is assumed that the content management information 31 of FIG. 5 is used, the last content is “007.jpg” with ID = 1101. The parent ID is an ID of a KeyIDList.

  Then, the television 2 outputs the received last content. Here, since it is assumed that the last content is an image, the television 2 displays the last content. As a result, the last content is displayed as shown in the screen example of FIG.

[Specific example of processing to output content with remote control 3 (selected from mode list)]
Next, a specific example of processing for outputting content with the remote controller 3 will be described with reference to FIG. FIG. 7 is a timing chart and an example of a screen showing an example of processing for selecting a mode from the mode list by the remote controller 3, selecting content from the corresponding list of the selected mode and outputting it to the television 2. Note that the processing described below is processing subsequent to (A) and (B) in FIG.

  First, the television 2 assigns the received parent ID to the operation key of the remote controller 3. Here, ID = 09999 is assigned to the red key (see FIG. 3) of the remote controller 3. Of course, the key to be assigned may be any of the operation keys of the remote controller 3.

  When the TV 2 detects an input operation on the user's own device or when a certain time has passed without any operation, the menu screen is displayed with a red key as shown in the second screen example of FIG. An image indicating that it is displayed is displayed. As shown in FIG. 5, in the content management information 31, ChangeModeID is associated with ID = 09999.

  Here, when the red key of the remote control 3 is operated, an operation signal indicating that the red key has been operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 09999 (ChangeModeID) assigned to the red key.

  And the mobile telephone 1 which received the request of ID = 09999 specifies the object allocated to ID = 09999. As described above, ID = 09999 is assumed to be assigned to the ChangeModeID, that is, the mode switching process. In this example, it is assumed that the mode of each corresponding list included in the KeyIDList is displayed as a list on the television 2 and the mode is switched.

  Therefore, the mobile phone 1 transmits to the television 2 each ID (ID = 19999,..., 59999) included in the KeyIDList, icons corresponding to these IDs, and a route ID. Also, ID = 09999 is transmitted as the parent ID.

  Next, the television 2 that has received the above ID and icon assigns the received ID to the operation key of the remote controller 3. Specifically, ID = 19999,..., 59999 are assigned to number keys 1 to 5 of the remote controller 3, respectively. Also, ID = 0 is assigned to the 12th number key of the remote controller 3.

  Further, the television 2 displays the received icon and presents the assignment result to the user. Specifically, icons corresponding to ID = 19999,..., 59999, 0 are displayed at the positions of number keys 1 to 5 and 12 of the remote controller 3, respectively. These icons are preferably configured so that the user can recognize the mode corresponding to ID = 19999,..., 59999, 0. In the illustrated example, key numbers are shown instead of icons in order to avoid complicated drawings.

  Furthermore, the television 2 generates correspondence information in which ID = 09999 is associated with the received ID and icon, and stores the correspondence information in the list storage unit 60. Thus, when the operation key assigned with ID = 09999 is operated next, the assignment and the assignment result can be displayed without transmitting a request to the mobile phone 1.

  Here, when the first number key of the remote controller 3 is operated, an operation signal indicating that the first number key has been operated is transmitted from the remote controller 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 19999 assigned to the first number key. As shown in FIG. 5, ID = 19999 corresponds to DefaultKeyIDList.

  Next, the mobile phone 1 that has received the request with ID = 19999 specifies the target assigned to ID = 19999. Here, since it is assumed that ID = 19999 is assigned to the DefaultKeyIDList, the mobile phone 1 determines that it has received a request for the DefaultKeyIDList. Therefore, the mobile phone 1 sends the IDs (ID = 01001 to 101010) included in the DefaultKeyIDList, the thumbnail images of the contents specified by these IDs, the ChangeModeID (ID = 09999), and the route ID to the TV 2. Send. Also, ID = 19999 is transmitted as the parent ID.

  The television 2 that has received the ID and the thumbnail image assigns the received ID to the operation key of the remote controller 3. Specifically, ID = 0101 to 01010 are assigned to number keys 1 to 10 of the remote controller 3, respectively. Also, ID = 09999 is assigned to the 11th number key, and ID = 0 is assigned to the 12th number key.

  Further, the television 2 displays the received thumbnail image and presents the allocation result to the user. Specifically, thumbnail images corresponding to ID = 01001 to 101010 are respectively displayed at positions of number keys 1 to 10 on the remote controller 3. In addition, icons corresponding to 09999 and 0 are displayed at the positions of number keys 11 and 12 of the remote controller 3. The image to be displayed will be described later.

  Here, when the second number key of the remote control 3 is operated, an operation signal indicating that the second number key has been operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 01002 assigned to the second number key.

  Next, the mobile phone 1 that has received the request with ID = 01002 identifies the target assigned to ID = 01002. As shown in FIG. 5, in DefaultKeyIDList, ID = 01002 is assigned to the content with ID = 01022. Therefore, the mobile phone 1 reads the content with ID = 01022 from the content storage unit 30.

  Then, the mobile phone 1 transmits the read content and ID = 01012 to the television 2 and transmits ID = 19999 as the parent ID, and the television 2 that receives these outputs the received content. As shown in FIG. 5, the content of ID = 0102 is “009.gif”, which is image data. For this reason, as shown in the figure, the television 2 receives 009. Displays gif image data.

[Display example of DefaultKeyIDList]
The television 2 may display an image as shown in FIG. 8 when receiving each ID of the DefaultKeyIDList and a thumbnail image. FIG. 8 is a diagram illustrating an example of a screen displayed when each ID of the DefaultKeyIDList and a thumbnail image are received.

  In the illustrated example, twelve rectangles each having a key number of 1 to 12 are displayed, and a character string indicating a target assigned to the key number is displayed in each rectangle. As a result, the user can easily recognize what object is assigned to each number key, and can easily recognize what processing is performed when each number key is pressed. be able to.

  Specifically, in the first to tenth rectangles, a character string indicating each content included in the DefaultKeyIDList of FIG. 5 is displayed, such as the last content or a photograph that has not yet been reproduced. Further, the 11th rectangle is displayed as mode switching, and the 12th rectangle is displayed as a folder tree. Thus, the user can recognize that the content reproduced last on the mobile phone 1 or the content such as a photograph that has not been reproduced can be output to the television 2 by the number keys 1 to 10 of the remote controller 3. it can. Further, the mode can be switched by the number key of No. 11, and the user can recognize that the folder tree can be displayed by the number key of No. 12.

  In the figure, in order to avoid the drawing becoming complicated, the description of the thumbnail image is omitted, but the thumbnail image of the content is displayed in the rectangle of the number to which the content is assigned. Thereby, the user can determine whether the content is acquired from the mobile phone 1 and displayed after confirming the content. Of course, the display of the assignment is not limited to the example shown in the drawing as long as the user can recognize the assignment.

  In the illustrated example, the rectangular array corresponding to each number key is matched to the number key array of the remote controller 3 (see FIG. 3). This makes it easier for the user to recognize the correspondence between the number key of the remote controller 3 and the content displayed when the number key is pressed.

[Specific example of processing for displaying content with remote controller 3 (continuation of FIG. 7)]
Next, the continuation of the processing in FIG. 7 will be described based on FIG. FIG. 9 is a diagram illustrating the continuation of the process of FIG. 7, and is a diagram illustrating a timing chart and an example of a screen illustrating an example of a process for selecting content from the BookmarkedContentsIDList and displaying it on the television.

  First, the television 2 assigns the received parent ID to the operation key of the remote controller 3. Here, ID = 19999 is assigned to the red key (see FIG. 3) of the remote controller 3. Of course, the operation key to be assigned may be any of the operation keys of the remote controller 3.

  Here, when the TV 2 detects an input operation on the user's own device or when a certain time has passed without any operation, the menu screen is displayed with the red key as shown in the first screen example of FIG. An image indicating that is displayed is displayed. Here, since ID = 19999 is assigned to the red key, the menu screen displayed by the operation of the red key is a menu screen based on the DefaultKeyIDList as shown in FIG.

  In this state, when the red key of the remote control 3 is operated, an operation signal indicating that the red key is operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received this operation signal does not make a request of ID = 19999, and displays a menu screen based on the DefaultKeyIDList assigned to the red key.

  This is because correspondence information that associates the ID of the correspondence list of the mode with the ID and icon (or thumbnail image) received from the mobile phone 1 when the mode is set by the request execution unit 50 of the television 2. This is possible by generating and storing in the list storage unit 60. Thereby, it is possible to display quickly without performing communication with the mobile phone 1. The association of icons and thumbnail images can be omitted.

  Here, when the number key 11 of the remote controller 3 is operated, an operation signal indicating that the operation key has been operated is transmitted from the remote controller 3 to the television 2. And the television 2 which received this operation signal displays the mode list allocated to the 11th number key, as shown in the example of a screen of the figure. Regarding this mode list, it is preferable that correspondence information in which the ID of the mode list is associated with the ID and icon received from the mobile phone 1 is generated and stored, and displayed without making a request again.

  Next, when the number 5 key of the remote control 3 is operated, an operation signal indicating that the operation key is operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 59999 assigned to the number 5 key.

  Next, the mobile phone 1 that has received the request with ID = 59999 identifies the target assigned to ID = 59999. Here, since it is assumed that ID = 59999 is assigned to the BookmarkedIDList (see FIG. 5), the mobile phone 1 uses each ID (ID = 05001 to 50010) included in the BookmarkedIDList and these IDs. The thumbnail image of each content specified in (1), ChangeModeID (ID = 09999), and the route ID are transmitted to the television 2. Also, ID = 59999 is transmitted as the parent ID.

  The television 2 that has received the ID and the thumbnail image assigns the received ID to the operation key of the remote controller 3. Specifically, ID = 05001-05010 is assigned to the number keys 1-10 of the remote control 3, respectively. In addition, ID = 09999 is assigned to the 11th number key, and ID = 0 is assigned to the 12th number key.

  Further, the television 2 displays the received thumbnail image and presents the allocation result to the user. Specifically, thumbnail images corresponding to ID = 05001-05010 are displayed at the positions of number keys 1 to 10 of the remote controller 3, respectively. In addition, icons corresponding to 09999 and 0 are displayed at the positions of number keys 11 and 12 of the remote controller 3. A display example based on the BookmarkedIDList will be described later.

  Here, when the number 3 key of the remote control 3 is operated, an operation signal indicating that the number 3 key has been operated is transmitted from the remote control 3 to the television 2. The television 2 that has received the operation signal requests the mobile phone 1 for ID = 05033 assigned to the number 3 key.

  Next, the mobile phone 1 that has received the request with ID = 05033 identifies the target assigned to ID = 05033. As shown in FIG. 5, ID = 05003 is assigned to the content of ID = 04033 in the Bookmarked IDList. Therefore, the mobile phone 1 reads the content with ID = 04033 from the content storage unit 30.

  Then, the cellular phone 1 transmits the read content and ID = 04033 to the television 2 and transmits ID = 59999 as the parent ID, and the television 2 that has received these outputs the received content. As shown in FIG. 5, the content with ID = 04033 is “d201.wmv”, which is video data. For this reason, as illustrated, the television 2 receives the d201. Play back wmv video data.

[Display example of BookmarkedIDList]
The television 2 may display an image as shown in FIG. 10 when each ID of the Bookmarked IDList and a thumbnail image are received. FIG. 10 is a diagram illustrating an example of a screen that is displayed when each ID of the Bookmarked IDList and a thumbnail image are received.

  In the illustrated example, twelve rectangles each having a key number of 1 to 12 are displayed, and a character string indicating a target assigned to the key number is displayed in each rectangle. As a result, the user can easily recognize what object is assigned to each number key, and can easily recognize what processing is performed when each number key is pressed. be able to.

  Specifically, bookmarked contents 1 to 10 are displayed in rectangles 1 to 10, respectively. Further, the 11th rectangle is displayed as mode switching, and the 12th rectangle is displayed as a folder tree. Thereby, the user can recognize that the contents bookmarked in the mobile phone 1 can be output to the television 2 by the number keys 1 to 10 of the remote controller 3. Further, the mode can be switched by the number key of No. 11, and the user can recognize that the folder tree can be displayed by the number key of No. 12.

  In the figure, in order to avoid the drawing becoming complicated, the description of the thumbnail image is omitted, but the thumbnail image of the content is displayed in the rectangle of the number to which the content is assigned. Thereby, the user can determine whether the content is acquired from the mobile phone 1 and displayed after confirming the content.

[Mode switching from the mode list]
In the example of FIGS. 5 to 10 described above, the mode is switched from the mode list. In other words, when switching from one mode to another mode, the mode list is displayed once, and the switching destination mode is selected from the mode list. This will be described with reference to FIG. FIG. 11 is a diagram illustrating an example of screen transition when mode switching is performed in the mode list.

  A screen example of the mode switching menu is shown on the left side of the figure. The mode switching menu is a menu screen that displays a list of modes to be selected, and is displayed based on KeyIDList. In the illustrated example, “default mode”, which is the mode name corresponding to the DefaultKeyIDList, is displayed in the first rectangle. Similarly, for the 2nd to 5th rectangles, mode names corresponding to the corresponding lists included in the KeyIDList are displayed. In addition, “Folder Tree” is displayed in the 12th rectangle.

  When this mode switching menu is displayed, the mode can be switched by operating the number keys 1 to 5 of the remote controller 3. That is, when the first number key is operated, the mode is shifted to the default mode, and the assignment of the number key corresponding to the DefaultKeyIDList is displayed.

  When switching from the default mode to another mode, the 11th number key of the remote controller 3 is operated to display the mode switching menu again, and the switching destination mode is selected from this menu.

[Specific example of processing for displaying content on remote control 3 (example in which mode list is not displayed)]
Next, another example of processing for displaying content with the remote controller 3 will be described with reference to FIGS. In the above example, the mode is switched by selecting a mode from the mode list. However, in this example, the mode is switched without displaying the mode list.

  First, the content management information 31 and the correspondence list to be used will be described with reference to FIG. FIG. 12 is a diagram showing an example of the content management information 31 and the correspondence list used when the mode list is not displayed. In addition, description about the part which is common in the above-mentioned example is abbreviate | omitted.

  In the content management information 31 of FIG. 5, ChangeModeID is assigned to ID = 09999, whereas in the content management information 31 of this example, KeyIDList is assigned as illustrated.

  Further, in FIG. 5, in addition to KeyIDList, DefaultKeyIDList and BookmarkedContentsIDList are exemplified as the correspondence list. However, in this example, UnprintedPhotoIDList is exemplified instead of BookmarkedContentsIDList. Unprinted PhotoIDList is a correspondence list assigned to ID = 29999 as described in the illustrated KeyIDList, and is a correspondence list used in an unreproduced photo mode for selecting an unreproduced photo.

  Subsequently, the flow of processing will be described with reference to FIG. FIG. 13 is a timing chart and an example of a screen showing an example of processing for outputting content to the television 2 by the remote controller 3 when mode switching is performed without displaying the mode list. Note that the processing described below is assumed to be processing following (A) and (B) in FIG. Therefore, the last content is displayed on the television 2 in the first screen example of FIG.

  First, the television 2 assigns the received parent ID to the operation key of the remote controller 3. Here, ID = 09999 is assigned to the red key (see FIG. 3) of the remote controller 3. Of course, the key to be assigned may be any of the operation keys of the remote controller 3.

  When the TV 2 detects an input operation on the user's own device or when a certain time has passed without any operation, the menu screen is displayed with a red key as shown in the second screen example of FIG. An image indicating that it is displayed is displayed. As shown in FIG. 12, Key = 0List is associated with ID = 09999.

  Here, when the red key of the remote control 3 is operated, an operation signal indicating that the red key has been operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 09999 associated with the red key.

  And the mobile telephone 1 which received the request of ID = 09999 specifies the object matched with ID = 09999. As described above, it is assumed that ID = 09999 is associated with KeyIDList. That is, the request with ID = 09999 is a mode switching (corresponding list switching) request. In this example, it is assumed that the mode is switched without displaying the mode list.

  For this reason, the mobile phone 1 selects one ID from each ID (ID = 19999,..., 59999) included in the KeyIDList. Here, it is assumed that a corresponding list of ID = 19999 (DefaultKeyIDList) having the smallest ID number is selected. As described above, the mode list is not displayed on the television 2 by transmitting the IDs included in the correspondence list automatically selected by the mobile phone 1.

  Then, the mobile phone 1 transmits to the television 2 each ID (ID = 0101 to 101010) included in the correspondence list of the selected ID, thumbnail images corresponding to these IDs, ID = 09999, and the route ID. To do. Further, the ID of the selected Default Key ID List is transmitted as the parent ID.

  Next, the television 2 that has received the above ID and icon assigns the received ID to the operation key of the remote controller 3. Specifically, ID = 0101 to 01010 are assigned to number keys 1 to 10 of the remote controller 3, respectively. ID = 09999 is assigned to the 11th key of the remote control 3, and ID = 0 is assigned to the 12th number key. Thereby, the television is in a default mode.

  Further, the television 2 displays the received thumbnail image and presents the allocation result to the user. The image displayed here is the same as the example of FIG. 8 because it shows the assignment result by DefaultKeyIDList.

<Specific Example of Processing for Displaying Content with Remote Controller 3 (Switching Correspondence List)>
Subsequently, the continuation of the process of FIG. 13 will be described with reference to FIG. FIG. 14 is a diagram showing a timing chart and a screen example showing the continuation of the processing of FIG. 13, and is a diagram showing an example of switching the correspondence list without displaying the mode list.

  When the 11th number key of the remote controller 3 is operated, an operation signal indicating that the key is operated is transmitted from the remote controller 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 09999 (ChangeModeID) assigned to the 11th number key.

  And the mobile telephone 1 which received the request of ID = 09999 specifies the object matched with ID = 09999. As shown in FIG. 12, in the mobile phone 1, ID = 09999 is associated with KeyIDList. In this example, it is assumed that the mode is switched without displaying the mode list.

  For this reason, the mobile phone 1 selects one ID from each ID (ID = 19999,..., 59999) included in the KeyIDList. Here, since the TV 2 is set to the mode corresponding to ID = 19999 having the smallest ID number (default mode), the corresponding list (UnprintedPhotoIDList) having ID = 29999 having the next smallest number is selected.

  That is, the mobile phone 1 specifies the current mode set in the television 2 from the received parent ID. Each time a request with ID = 09999 is received, an ID of a corresponding list different from the current mode is selected from the KeyIDList in a predetermined order.

  Note that this order is not limited to the order from the smallest ID number, and may be any order. For example, the order may be stored in the mobile phone 1 as table format data. Further, the order does not necessarily need to be fixed. For example, the order may be changed so that an ID of a mode with a high user selection frequency is displayed first. Furthermore, the mode set in the television 2 can be specified based on the information received by receiving the terminal ID and IP address of the television 2.

  Then, the mobile phone 1 transmits each ID (ID = 02001 to 02010) included in the selected ID correspondence list, thumbnail images corresponding to these IDs, ID = 09999, and the route ID to the television 2. To do. In addition, the ID of the selected UnphotodPhotoIDList is transmitted as the parent ID.

  Next, the television 2 that has received the above ID and icon assigns the received ID to the operation key of the remote controller 3. Specifically, ID = 02001 to 02010 is assigned to the number keys 1 to 10 of the remote controller 3, respectively. ID = 09999 is assigned to the 11th key of the remote control 3, and ID = 0 is assigned to the 12th number key. As a result, the television 2 enters the unreproduced photo mode.

  Further, the television 2 displays the received thumbnail image and presents the allocation result to the user. In the illustrated example, key numbers are shown instead of thumbnail images in order to avoid complicated drawings.

  Here, when the first number key of the remote controller 3 is operated, an operation signal indicating that the first number key has been operated is transmitted from the remote controller 3 to the television 2. Then, the television 2 that has received this operation signal requests the mobile phone 1 for ID = 02001 assigned to the first number key.

  Next, the mobile phone 1 that has received the request with ID = 02001 identifies the target assigned to ID = 02001. As shown in FIG. 12, in UnprintedPhotoIDList, ID = 02001 is assigned to the content with ID = 01022. Therefore, the mobile phone 1 reads the content with ID = 01022 from the content storage unit 30.

  Then, the mobile phone 1 transmits the read content and ID = 0102 to the television 2 and also transmits ID = 29999 as the parent ID, and the television 2 that receives these outputs the received content. As shown in FIG. 12, the content of ID = 0102 is “009.gif”, which is image data. Therefore, the television 2 receives 009... Received from the mobile phone 1 as shown in the third screen example of FIG. Displays a gif image.

  When the TV 2 detects an input operation on the user's own device or when a certain time has elapsed without any operation, the menu screen is displayed with a red key as shown in the fourth screen example of FIG. An image indicating that it is displayed is displayed. Here, the last received parent ID = 29999 is assigned to the red key.

  Here, when the red key of the remote control 3 is operated, an operation signal indicating that the red key has been operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received the operation signal displays ID = 29999 (UnplayedPhotoIDList) assigned to the red key. That is, the red key can be used to switch to the previous mode.

<Mode switching without using the mode list>
In the example of FIGS. 12 to 14 described above, the mode is switched using the 11th number key without using the mode list. This will be described with reference to FIG. FIG. 15 is a diagram illustrating an example of screen transition when mode switching is performed using the number 11 key.

  As shown in the figure, each mode from the unreproduced photo mode to the default mode is switched in turn by the number key 11 of the remote controller 3. In any mode, the mode switch (ID = 09999) is assigned to the 11th number key, and when the mobile phone 1 receives the request with ID = 09999, the mobile phone 1 follows the currently set mode. This is realized by transmitting an ID or the like corresponding to the mode to the television 2.

  Further, as shown in the figure, when switching from the bookmark mode (ID = 59999), it is assumed that the mode is switched to the default mode (ID = 19999). That is, it is assumed that the mode of ID = 19999,..., 59999 loops by repeating switching.

[Flow of processing executed by mobile phone 1]
Next, a flow of processing executed by the mobile phone 1 will be described with reference to a flowchart. FIG. 16 is a flowchart illustrating an example of processing executed by the mobile phone 1.

  The request processing unit 22 waits for reception of a response request (S10). When reception of the response request is confirmed (YES in S10), the request processing unit 22 transmits the response and attribute information of the mobile phone 1 to the transmission source of the response request (S11). Here, it is assumed that the transmission source of the response request is the television 2.

  Next, the request processing unit 22 waits for a request for a route ID (S12). Here, when the reception of the request for the route ID is confirmed (YES in S12), the request processing unit 22 refers to the content management information 31 to identify the content assigned the last content ID. The read content is read from the content storage unit 30. Then, the request processing unit 22 transmits the last content ID, the read content, and a predetermined parent ID to the television 2 (S13).

  Then, the request processing unit 22 waits for reception of a request (S14). Here, when reception of the request is confirmed (YES in S14), the request processing unit 22 performs a request handling process (S15). Details of the request handling process will be described later.

  FIG. 16 shows an example in which the last content is transmitted when the reception of the request for the route ID is confirmed. However, depending on the setting of the television 2, the server detected by the server search is selected. It is also conceivable to request an ID other than the root ID (for example, the ID of the folder that was last accessed when content was acquired from the server in the past).

  For this reason, when the request processing unit 22 receives the first request from the television 2 after being connected to the television 2, the request processing unit 22 may transmit the last content regardless of the requested ID. Thereby, even if it is a case where the request of ID other than root ID is received initially, last content can be output to the television 2. FIG.

  Note that whether or not the request is the first request can also be determined by storing the terminal ID and IP address of the communication-connected device, for example. That is, when the stored terminal ID or IP address does not include the terminal ID or IP address of the source of the received request, it can be determined that the request is the first request.

  Further, when storing the terminal ID or the like, it is also preferable to store timing information (for example, the date and time when communication is started) indicating the timing of communication with the device. Accordingly, whether or not to transmit the last content can be changed according to the timing information.

  For example, there may be a case where a device that has been connected to the mobile phone 1 in the past is connected to the mobile phone 1 again after a certain period of time. In such a case, when the device transmits a request to the mobile phone 1, the request processing unit 22 may regard the request as the first request and transmit the last content.

  That is, when the request processing unit 22 receives a request from a device that already stores the terminal ID and the IP address, the request processing unit 22 refers to the timing information indicating the timing of the last communication with the device, and the timing information indicates If the period from timing (for example, date and time) to reception of the current request exceeds a preset period (for example, 1 hour to 24 hours), the request is regarded as the first request and the last content is transmitted. May be.

  As a result, the last content can be received from the mobile phone 1 even if the device has been connected to the mobile phone 1 in the past. Further, since the last content is not transmitted if the preset period has not been exceeded, the last content is not transmitted every time a request is continuously received from the same device within the period. .

  Moreover, it is preferable to process the request within the above period as a request for a normal route ID, not as a request for the last content, even if it is a request for a route ID. That is, when the request processing unit 22 receives a request for a root ID within the above period, it is not the last content, but the ID of each object included in the root directory, etc. (a tree showing the folder structure from the root directory of the mobile phone 1) It is preferable to transmit data necessary to display As a result, it is possible to send a route ID request to the mobile phone 1 to display a folder tree.

[Flow of processing executed by TV 2]
Subsequently, a flow of processing executed by the television 2 will be described with reference to a flowchart. FIG. 17 is a flowchart illustrating an example of processing executed by the television 2.

  The request execution unit 50 broadcasts the response request and the attribute information of the television 2 to each device included in the communication system 100 (S20). Then, a response to the transmitted response request and reception of attribute information are awaited (S21). That is, a server search is performed in S20 and S21. These processes are periodically performed at predetermined time intervals.

  When the reception of the response and the attribute information is confirmed (YES in S21), the request execution unit 50 displays the server specified by the received attribute information on the display unit 40, and requests the content The server is selected by the user (S22).

  If selection of the server is not confirmed within a certain time (NO in S22), the process returns to S20. On the other hand, when the selection of the server is confirmed (YES in S22), the request execution unit 50 transmits a request for the route ID to the selected server (S23). Here, it is assumed that the mobile phone 1 is detected by the server search and the mobile phone 1 is selected in S22. That is, in S23, the mobile phone 1 is requested for a route ID.

  As described above, the mobile phone 1 that has received the request for the route ID transmits the last content ID, the content of the ID, and the parent ID to the television 2 through the processes of S12 and S13 in FIG. Then, the request execution unit 50 that has received them instructs the content reproduction unit 51 to display the received content on the display unit 40 (S24).

  Further, the request execution unit 50 assigns the received parent ID and the operation key of the remote controller 3 (S25). This makes it possible to make a request for the received parent ID with the operation keys of the remote controller 3.

  Then, the request execution unit 50 waits for reception of an operation signal from the remote controller 3 (S26). Here, when reception of the operation signal is confirmed (YES in S26), the request execution unit 50 performs an operation signal handling process (S27). Details of the operation signal handling process will be described later.

[Request processing]
Next, details of the request handling process performed in S15 of FIG. 16 will be described based on FIG. FIG. 18 is a flowchart illustrating an example of a request handling process. Here, an example in which a mode list is displayed and mode selection is performed (see FIGS. 7 to 11) will be described.

  First, the request processing unit 22 confirms whether the received request is a request for a correspondence list (S30). Here, when it is confirmed that the request is a request for the correspondence list (YES in S30), the request processing unit 22 displays an ID (for example, each ID included in the KeyIDList) and an icon of each correspondence list as a selection candidate. At the same time, a predetermined parent ID (for example, ID of the mode switching process) is transmitted (S31), and the request handling process is terminated.

  It is determined with reference to the content management information 31 whether the request is a list of correspondence lists. For example, in the content management information 31 of FIG. 5, since ID = 09999 is associated with ChangeModeID, when a request with ID = 09999 is received, it is determined that a request for a corresponding list is received.

  On the other hand, when it is confirmed that the request is not a request for the correspondence list (NO in S30), the request processing unit 22 confirms whether the received request is a request for the correspondence list (S32).

  Whether or not the request is a request for a correspondence list is determined by confirming whether the request is for each of the correspondence lists stored in the list storage unit 32. For example, in the example of FIG. 5, since five correspondence lists with ID = 19999,..., 59999 are included, when any request with ID = 19999,. Judge that received.

  If it is confirmed that the request is a request for a correspondence list (YES in S32), the request processing unit 22 extracts a content ID from the requested correspondence list. Further, the thumbnail image of the content specified by the extracted content ID is read from the content storage unit 30. Then, the extracted content ID and the read thumbnail image are transmitted, and a predetermined parent ID is transmitted (S33), and the request handling process is terminated.

  On the other hand, when it is confirmed that the request is not a request for the correspondence list (NO in S32), the request processing unit 22 confirms whether the received request is a request for content (S34). Whether the request is a content request is determined based on whether the content with the received ID is stored in the content storage unit 30.

  If it is confirmed that the request is a content request (YES in S34), the request processing unit 22 reads the requested content from the content storage unit 30. Then, the read content is transmitted (S35), and the request handling process is terminated. On the other hand, when it is confirmed that the request is not a content request (NO in S34), the request processing unit 22 ends the request handling process.

[Operation signal handling processing]
Next, details of the operation signal handling process performed in S27 of FIG. 17 will be described based on FIG. FIG. 19 is a flowchart illustrating an example of the operation signal handling process.

  First, the operation signal receiving unit 52 specifies the operated key from the operation signal received from the remote controller 3 (S40), and notifies the request execution unit 50 of the specified operation key. Then, the request execution unit 50 transmits a request for the ID assigned to the operation key that has received the notification (S41).

  And the request execution part 50 confirms whether ID was received as a response with respect to the transmitted request (S42). Here, when the reception of the ID is confirmed (YES in S42), the request execution unit 50 assigns the received ID to the operation key of the remote controller 3 (S43). Then, the allocation result is displayed on the display unit 40 (S44), and the operation signal handling process is terminated.

  For example, when a request for the ID of the correspondence list is transmitted, the ID of each content included in the correspondence list of the ID is transmitted from the mobile phone 1, and these IDs are assigned to the operation keys. In this case, since thumbnail images of the contents are also transmitted, these are displayed and the allocation result is presented.

  On the other hand, when the reception of the ID is not confirmed as a response to the transmitted request (NO in S42), the request execution unit 50 confirms whether the content is received (S45).

  Here, when the reception of the content is confirmed (YES in S45), the request execution unit 50 instructs the content reproduction unit 51 to output the received content (S46), and ends the operation signal handling process. . On the other hand, when it is confirmed that no content is received as a response to the transmitted request (NO in S45), the request execution unit 50 ends the request handling process. In the illustrated example, the received content is automatically output. However, the user may be allowed to select whether or not to output the content.

[Modification]
In the above, an example has been shown in which the television 2 requests the mobile phone 1 for a correspondence list and assigns each ID included in the received correspondence list to the operation key of the remote controller 3. However, when content is frequently transmitted and received between specific devices, for example, when the manufacturers of the mobile phone 1 and the television 2 are the same, the correspondence list is transmitted together and stored in the television 2. May be. In the present modification, an example in which a correspondence list is collectively transmitted to the television 2 for assignment will be described with reference to FIGS.

<Use data>
In this modification, it is assumed that a correspondence list and content management information 31 as shown in FIG. 20 are used. FIG. 20 is a diagram illustrating an example of the correspondence list and the content management information 31. As illustrated, it is assumed here that there is a correspondence list of DefaultKeyIDList, UnprintedPhotoIDList, UnplayedMusicIDList, and UnplayedMovieIDList. These correspondence lists are transmitted from the mobile phone 1 to the television 2 before receiving an ID request. In the figure, for the correspondence list other than the DefaultKeyIDList, description of examples of assigned contents is omitted.

  As illustrated, the content management information 31 includes an ID (19999) of DefaultKeyIDList. Thereby, after displaying the last content, assignment to the number key based on the DefaultKeyIDList is performed.

  Further, it is assumed that a correspondence list called MenuKeyID is also transmitted to the television 2. MenuKeyID is a correspondence list indicating an ID assigned to a color key. In the illustrated example, the ID for displaying the mode list is assigned to the red key, the ID for displaying the list of the previous page is assigned to the green key, and the ID for displaying the list of the next page is assigned to the yellow key. . Note that page switching will be described later.

<Specific examples of processing>
Next, a specific example of the process according to this modification will be described with reference to FIG. FIG. 21 is a diagram illustrating a timing chart and an example of a screen illustrating an example of processing according to the present modification.

  First, the television 2 broadcasts the response request and the attribute information of the television 2 to each device included in the communication system 100, and performs a server search. In the present modification, the mobile phone 1 (specifically, the request processing unit 22) that has received the response request transmits the data shown in FIG. 20 to the television 2 in addition to the response and the attribute information of the terminal itself. That is, the request processing unit functions as a list transmission unit that transmits the correspondence list to the television 2.

  The television 2 that has received the response, the attribute information, and the above data displays the server specified by the received attribute information, as shown in the first screen example of FIG. Here, it is assumed that the cellular phone 1 is selected from the displayed server.

  When the mobile phone 1 is selected from the displayed servers, the television 2 requests ID = 0 (route ID) from the mobile phone 1. Then, the mobile phone 1 that has received the request with ID = 0 transmits ID = 01001 as the child ID. This ID = 01001 is the LastID. In addition, the mobile phone 1 transmits the content content to which the LastID is assigned, that is, the last content to the television 2.

  Further, the mobile phone 1 transmits to the television 2 each ID (ID = 01002-01010) included in the DefaultKeyIDList, thumbnail images corresponding to these IDs, ChangeModeID (09999), and the route ID. Thereby, DefaultKeyIDList is designated. That is, the request processing unit 22 also functions as a list designation information transmission unit. Also, an ID (19999) of DefaultKeyIDList is transmitted as the parent ID. Of these IDs, those already transmitted together with the attribute information may be omitted.

  And the television 2 which received said ID and a thumbnail image outputs the received last content. Here, since it is assumed that the last content is an image, the television 2 displays the last content. As a result, the last content is displayed as shown in the illustrated screen example.

  Also, the television 2 assigns the received ID and thumbnail image to the operation keys of the remote controller 3. Specifically, ID = 0101 to 01010 and thumbnail images corresponding to these are assigned to number keys 1 to 10 of the remote controller 3, respectively. ID = 09999 is assigned to the 11th key of the remote control 3, and ID = 0 is assigned to the 12th number key.

  Here, when the number 3 key of the remote control 3 is operated, an operation signal indicating that the number 3 key has been operated is transmitted from the remote control 3 to the television 2. Then, the television 2 that has received this operation signal refers to the DefaultKeyIDList and specifies the content assigned to ID = 01003 assigned to the number 3 key.

  Here, as shown in FIG. 20, it is assumed that the content of ID = 01022 is allocated to ID = 01003 of DefaultKeyIDList. For this reason, the television 2 requests the mobile phone 1 for ID = 01022.

  Next, the mobile phone 1 that has received the request with ID = 01022 reads the content assigned to ID = 01022 from the content storage unit 30. Then, the mobile phone 1 transmits the read content and ID = 01022 to the television 2 and also transmits ID = 19999 as the parent ID, and the television 2 receiving these outputs the received content. Here, it is assumed that the content with ID = 01022 is music (voice) data. For this reason, as shown in the example of the screen in the figure, the television 2 reproduces the music received from the mobile phone 1.

<Switching pages>
In the above description, an example in which IDs of up to 10 contents are included in one correspondence list and IDs of the contents are assigned to number keys 1 to 10 has been described. However, 11 or more content IDs may be included in one correspondence list. Here, an example in which IDs of 11 or more contents are included by assigning a plurality of pages to one correspondence list will be described.

  For example, page switching can be performed by using the Menu Key ID shown in FIG. FIG. 22 is a diagram illustrating a screen example for explaining page switching. Here, an example of page switching in the unreproduced photo mode will be described.

  As described above, in the unreproduced photo mode, assignment is performed based on the Unprinted PhotoIDList. Here, it is assumed that the UnprintedPhotoIDList has a plurality of pages.

  Specifically, it is assumed that there are a plurality of unreproduced photo correspondence lists such as Unprinted PhotoIDList — 01, Unprinted PhotoIDList — 02, and Unprinted PhotoIDList — 03. Each correspondence list is for associating IDs of contents having attributes of unreproduced photos with number keys 1 to 10. Thereby, many contents can be included in each mode.

  Here, in MenuKeyID shown in FIG. 20, the mode list ID is associated with the red key, the list ID of the previous page is associated with the green key, and the list of the next page is associated with the yellow key. ID is matched.

  That is, in the television 2 that has received the Menu Key ID shown in FIG. 20, the mode list ID, the previous page list ID, and the next page list ID are assigned to the red, green, and yellow color keys. As a result, it becomes possible to display the mode list by operating the color key, and to page forward and return the corresponding list.

  In order to make the user recognize these assignments, in the example of FIG. 22, the green key is assigned to the process of displaying the previous list, and the yellow key is assigned to the process of displaying the next list. is doing.

  When the green key is operated while the display based on the UnprintedPhotoIDList_02 is performed, the television 2 assigns each ID included in this list to the number key based on the UnprintedPhotoIDList_01 stored therein. Also, this allocation result is displayed. Note that the television 2 may request the UnprintedPhotoIDList_01 from the mobile phone 1 to receive the ID and perform allocation.

[Other examples of correspondence list]
The correspondence list for assigning content to the number key is not limited to the one exemplified in the above embodiment, and can be set as appropriate according to the application of the mobile phone 1, the attribute of the stored content, and the like. For example, a correspondence list as shown in FIG. 23 may be used. FIG. 23 is a diagram showing a display example of assignment results when a correspondence list for assigning content for each application to number keys is used. In addition, description of the part which is common in the said embodiment is abbreviate | omitted.

  In the illustrated example, “contents recently taken with a camera” is displayed in the second rectangle. That is, in the correspondence list for displaying the screen shown in the figure, “contents recently taken with a camera” is assigned to the second number key. When the mobile phone 1 has a photo shooting function, a correspondence list to which such content is assigned may be used.

  This correspondence list may be created (updated) as follows. That is, the application monitoring unit 20 detects that a photograph has been taken by the mobile phone 1 and that the photographed photograph has been stored in the content storage unit 30. In response to this detection, the content management unit 21 adds the ID of the stored content to the correspondence list of “contents recently taken with a camera”.

  In the illustrated example, “Recently downloaded content” is displayed in the third rectangle. That is, “Recently downloaded content” is assigned to the number 3 key in the correspondence list for displaying the screen shown in the figure. When the mobile phone 1 has a function of downloading content from a website on the Internet or another device such as a web browser or an FTP (File Transfer Protocol) application, such content is assigned. A list may be used.

  This correspondence list may be created (updated) as follows. That is, the application monitoring unit 20 detects that content has been downloaded by the mobile phone 1 and stored in the content storage unit 30. In response to this detection, the content management unit 21 adds the ID of the stored content to the “recently downloaded content” correspondence list.

  In the illustrated example, “contents recently played by the player” is displayed in the fourth rectangle. That is, in the correspondence list for displaying the screen shown in the drawing, “contents recently played by the player” is assigned to the number 4 key.

  This correspondence list may be created (updated) as follows. That is, the application monitoring unit 20 detects that content has been played by the player application of the mobile phone 1. In response to this detection, the content management unit 21 adds the ID of the reproduced content to the correspondence list of “contents recently played by the player”.

  Note that the number of detection target players may be one or plural. For example, both the content reproduced by the moving image player and the content reproduced by the audio player may be assigned to the same number key.

  In the example shown in the figure, “contents recently received by mail” is displayed in the fourth rectangle, and “contents recently transmitted by mail” is displayed in the fifth rectangle. In other words, in the correspondence list for displaying the screen shown in the figure, the number 5 key is assigned “Recently received content”, and the number 6 key is “Recently sent content”. "Is assigned.

  This correspondence list may be created (updated) as follows. That is, the application monitoring unit 20 detects that the mailer of the mobile phone 1 has received an electronic mail with an attached file and that the attached file has been stored in the content storage unit 30. In response to this detection, the content management unit 21 adds the ID of the stored content to the correspondence list of “contents recently received by mail”. In addition, the application monitoring unit 20 detects that the mailer of the mobile phone 1 has transmitted an e-mail with an attached file. In response to this detection, the content management unit 21 adds the ID of the transmitted content to the correspondence list of “contents recently transmitted by e-mail”.

  Furthermore, in the illustrated example, “contents recently viewed in album” is displayed in the seventh rectangle. That is, in the correspondence list for displaying the screen shown in the figure, “contents recently viewed in album” is assigned to the number 7 key. When the mobile phone 1 includes an application (album application) for browsing images as an album, a correspondence list to which such content is allocated may be used.

  This correspondence list may be created (updated) as follows. That is, the application monitoring unit 20 detects that an image has been browsed by the album application of the mobile phone 1 (displayed on the display unit 40). In response to this detection, the content management unit 21 adds the ID of the browsed content to the correspondence list of “contents recently viewed in an album”. Thus, by assigning content accessed to a specific application, the user can easily reach desired content.

  In the illustrated example, “SD card content” is displayed in the eighth rectangle. That is, in the correspondence list for displaying the screen shown in the figure, “SD card content” is assigned to the number 8 key. When the mobile phone 1 can be equipped with an SD card, a correspondence list to which such content is assigned may be used.

  When the number 8 key is operated, the television may display a list of contents of the SD card attached to the mobile phone 1 (for example, a tree display), or a predetermined content may be selected from the contents of the SD card. You may display the content (for example, the content updated recently) selected on the basis. In this way, content recorded at a specific recording location may be assigned.

  In the illustrated example, “PC content” is displayed in the ninth rectangle. That is, in the correspondence list for displaying the illustrated screen, “PC content” is assigned to the number 9 key.

  Here, a synchronization application is known that synchronizes an external device and the device itself so that the content stored in the device can be played in the same manner as the content stored in the device. . The synchronization application presents content stored in an external device to the user of the own device, and when the presented content is selected, the content is acquired from the device and played back. Further, when there is an addition, deletion, or change in the content stored in the device, the synchronization application corrects the content to be presented to the user of the own device accordingly.

  When the mobile application 10 includes such a synchronization application, the correspondence list to which “PC content” is assigned can be created and updated by monitoring the operation of the synchronization application.

  That is, the application monitoring unit 20 monitors whether the synchronization application has detected that content has been added, modified, or deleted from the PC (external device). Then, when it is confirmed that the synchronization application has detected that the content has been added or modified on the PC, the content management unit 21 sets the ID of the added or modified content to “PC content”. Add to list. Further, when it is confirmed that the synchronization application has detected that the content has been deleted on the PC, if the ID of the deleted content is included in the correspondence list of “PC content”, the ID Is deleted.

  When the number 9 key is operated, the television may display a list of contents acquired from the PC among the contents stored in the content storage unit 30. From these contents, Content selected based on a predetermined criterion (for example, recently updated content) may be displayed. Further, the content acquired from the PC can be identified by attaching a tag indicating the acquisition source to the content at the time of content acquisition. In this way, content recorded at a specific recording location may be assigned.

  As described above, assignment to an operation key can be performed based on an arbitrary content attribute that serves as a search key for a user to search for desired content.

  Since the above embodiment is based on the DLNA standard, the content and the correspondence list are designated by ID. However, it is of course possible to designate the content and the correspondence list by other than the ID. For example, in the case of an object such as a content or a folder, it may be specified by a URI or the like.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  Finally, each block of the mobile phone 1 and the television 2, in particular, the mobile control unit 13 and the television control unit 42 may be realized in hardware by a logic circuit formed on an integrated circuit (IC chip), You may implement | achieve by software using CPU (Central Processing Unit).

  In the latter case, the mobile phone 1 and the television 2 include a CPU that executes program instructions for realizing each function, a ROM (Read Only Memory) that stores the program, a RAM (Random Access Memory) that expands the program, A storage device (recording medium) such as a memory for storing programs and various data is provided. The object of the present invention is to record the program code (execution format program, intermediate code program, source program) of the control program for the mobile phone 1 and the television 2 which is software for realizing the functions described above so as to be readable by the computer. This can also be achieved by supplying the medium to the cellular phone 1 and the television 2 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R. IC cards (including memory cards) / optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM / flash ROM, PLD (Programmable logic device), FPGA (Field Programmable Gate Array), etc. Logic circuits can be used.

  The mobile phone 1 and the television 2 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited as long as it can transmit the program code. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, and the like can be used. The transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, even with wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE 802.11 wireless, HDR ( It can also be used by radio such as High Data Rate (NFC), Near Field Communication (NFC), Digital Living Network Alliance (DLNA), mobile phone network, satellite line, and digital terrestrial network.

  The present invention can be used in a content transmission apparatus that transmits content in response to a request from a content reproduction apparatus. For example, the present invention can be suitably applied to a mobile phone having a DLNA server function, NAS, PDA, PC, and the like.

1 Mobile phone (content transmission device)
2 Television (content playback device)
3 Remote control (operating device)
10 Mobile application (application software)
20 Application monitoring unit (access detection means)
21 Content management unit (content registration means, content association means)
22 Request processing section (content transmission means, key identification information transmission means, list identification information transmission means, list transmission means, list designation information transmission means)
32 list storage unit 50 request execution unit (content request unit, key identification information association unit, correspondence information generation unit)
51 Content playback unit (content playback means)
100 communication system

Claims (15)

In response to a request from a content reproduction device connected to a network, the content transmission device transmits content via the network,
Access detecting means for detecting that application software operating on the own device has accessed the content;
Content registration means for registering the content detected last by the access detection means;
A content transmission apparatus comprising: content transmission means for transmitting content registered by the content registration means to the content reproduction apparatus when a content request is received from the content reproduction apparatus.   The content transmission unit transmits the content registered by the content registration unit to the content reproduction device when the content transmission unit receives the first content request from the content reproduction device after the device is connected to the network. The content transmission apparatus according to claim 1.   The content transmitting means transmits the content registered by the content registration means to the content reproduction apparatus when receiving a content request for the root directory of the own apparatus from the content reproduction apparatus. 2. The content transmission device according to 2. A list storage unit for storing a correspondence list in which key identification information corresponding to an operation key included in an operation device for operating the content reproduction device and attribute information indicating an attribute of the content are associated
Referring to the attribute information in the correspondence list, and content association means for associating the key identification information with content having the attribute indicated by the attribute information,
The content transmitting unit, when receiving the key identification information from the content reproduction device, transmits the content associated with the key identification information to the content reproduction device. Item 4. The content transmission device according to any one of Items 1 to 3. The list storage unit stores a plurality of correspondence lists, and the key identification information included in each correspondence list includes correspondence list specifying information for identifying the correspondence list including the key identification information,
A key identification information transmission unit configured to transmit key identification information included in the requested correspondence list to the content reproduction device when a request for one of the plurality of correspondence lists is received from the content reproduction device; The content transmitting apparatus according to claim 4, wherein   A list for transmitting list identification information for identifying each of a plurality of correspondence lists stored in the list storage unit to the content reproduction device when receiving a request for switching the correspondence list from the content reproduction device 6. The content transmission apparatus according to claim 5, further comprising identification information transmission means.   The key identification information transmission means includes a key included in one correspondence list selected from a plurality of correspondence lists stored in the list storage unit when the correspondence list switching request is received from the content reproduction device. 6. The content transmission apparatus according to claim 5, wherein the identification information is transmitted to the content reproduction apparatus. List transmitting means for transmitting a plurality of the corresponding lists to the content reproduction device;
8. The apparatus according to claim 4, further comprising: list designation information transmitting means for transmitting, to the content reproduction apparatus, list designation information for designating one of the correspondence lists transmitted by the list transmission means. The content transmission apparatus according to item. A content reproduction device that transmits a content request to the content transmission device according to any one of claims 1 to 8 via the network and receives content transmitted in response to the content request.
Content request means for transmitting a content request to the content transmission device;
A content reproduction apparatus comprising: content reproduction means for reproducing the content received in response to the content request of the content request means. A content playback device that transmits a content request to the content transmission device according to claim 4 via the network and receives content transmitted in response to the content request.
Means for associating the key identification information with the operation keys of the operating device;
Content request means for requesting content by transmitting key identification information associated with an operation key indicated by the operation signal to the content transmission device when an operation signal is received from the operation device;
A content reproduction apparatus comprising: content reproduction means for reproducing the content received in response to the content request of the content request means. A content reproduction device that transmits a content request to the content transmission device according to claim 5 and receives content transmitted in response to the content request,
Correspondence information generating means for generating correspondence information in which the key identification information transmitted by the key identification information transmission means of the content transmission device is associated with the list identification information for identifying the correspondence list including the key identification information;
When one of the correspondence lists is selected, the key identification information that refers to the correspondence information and associates the key identification information associated with the list identification information of the selected correspondence list with the operation key of the operation device. Correspondence means;
Content request means for requesting content by transmitting key identification information associated with an operation key indicated by the operation signal to the content transmission device when an operation signal is received from the operation device;
A content reproduction apparatus comprising: content reproduction means for reproducing the content received in response to the content request of the content request means.   A communication system including the content transmission device according to any one of claims 1 to 8 and the content reproduction device according to claim 9. In accordance with a request from a content playback device connected to a network, a method for controlling a content transmission device that transmits content via the network,
An access detection step of detecting that the application software operating on the content transmission device has accessed the content;
A content registration step of registering the content detected last in the access detection step;
A content transmission apparatus control method comprising: a content transmission step of transmitting the content registered in the content registration step to the content reproduction apparatus when a content request is received from the content reproduction apparatus.   A control program for operating the content transmission apparatus according to claim 1, wherein the control program causes a computer to function as each of the means.   The computer-readable recording medium which recorded the control program of Claim 14.

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