JP2008067360A - Content reproduction device, content reproduction method, content reproduction system, content data providing device, content data providing method, data structure, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content reproduction device capable of performing a flexible error processing based on the content being reproduced. <P>SOLUTION: Upon detection of a content acquisition error in a process for acquiring a title screen content C102 as the next content to be reproduced next to the top screen content C101, the content reproduction device 100 reproduces a sub-content contained as error processing information in the top screen content C101 and displays an error screen E200. Since the error screen E200 is contained as a sub-content in the top screen content C101, it is possible to flexibly modify the error screen E200. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a content reproduction apparatus, a content reproduction method, and a content reproduction system that reproduce content data acquired from the outside. The present invention also relates to a content data providing apparatus that provides content data to a content reproduction apparatus and a content data providing method. The present invention also relates to a program for causing a computer to operate as these devices, and a recording medium on which the program is recorded.

  Content playback devices that play back content such as still images and moving images have become widespread. Particularly in recent years, with the spread of the Internet and Web services using the Internet, content data is acquired from an external server device via the network, and content included in the acquired content data is played back. The device is to be used. As an example, there is a slide show display device that reproduces a plurality of slides including photos as a slide show.

  By the way, in such a network type content reproducing apparatus, it is necessary to deal with various errors that occur in communication processing for acquiring content data. For example, when there is no content data to be provided to the content reproduction device in the server device, the server device cannot provide the content data to the content reproduction device. In such a case, it is preferable that the content reproduction apparatus presents to the user that a so-called server error has occurred. Also, even if the server device sends out content data, content data acquisition may not be completed on the content playback device side due to a network failure or the like. In such a case, it is preferable that the content reproduction apparatus presents to the user that a so-called terminal error has occurred. If such a presentation is not performed, the user is not informed why the content cannot be reproduced and feels stressed.

  In a general-purpose conventional web server, normally, when there is no content to be transmitted to the content reproduction device, an error code 404 indicating that the requested content data does not exist is transmitted to the content reproduction device such as a web browser. The web browser presents an error screen displaying 404 NOT FOUND or the like to the user to inform the user that an error has occurred on the server side. Further, when an error occurs on the terminal side, the content reproduction apparatus notifies the user that a terminal error has occurred by, for example, presenting a predetermined error screen informing the user that a terminal error has occurred.

For example, Patent Document 1 discloses a network multifunction peripheral that transmits an error message (HTTP “404 (Not Found)”) to a client terminal when a requested web page is not stored.
JP 2006-53765 (published February 23, 2006)

  The above-described conventional content reproduction apparatus has a problem that it is difficult to provide flexibility in error processing that the content reproduction apparatus executes when an error occurs, such as changing the error screen according to the content being reproduced. It was.

  The above problem will be described in more detail below.

  When an error that cannot acquire the content to be reproduced next occurs, the conventional content reproduction device executes error processing based on a program stored in advance in the device itself. Even when error processing according to the type of error that occurred is performed by referring to the error code provided by the server device, each processing executed according to the type of error is determined based on the above program Therefore, the error processing variation that can be executed by the content reproduction apparatus is determined in advance when the program is stored in the content reproduction apparatus. For this reason, it has been difficult to provide flexibility in error processing executed by the content reproduction device when an error occurs, such as changing the error screen displayed on the content reproduction device according to the content being reproduced.

  In order to solve such a problem, the content playback device is configured to acquire error processing data for executing error processing, such as content data for error processing including an error screen as content, from the server device. Can be considered. However, it is necessary to execute error processing in a situation where the content to be reproduced next cannot be acquired. Under such circumstances, there is a high possibility that the content reproduction device cannot acquire the error processing data, and the configuration for acquiring the error processing data from the server device when an error occurs is not realistic.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a content reproduction apparatus capable of executing flexible error processing according to the content being reproduced.

  In order to solve the above-mentioned problem, the content playback device according to the present invention is information specifying main content playback means for playing back the main content included in the content data to be played back, and processing to be executed in the device itself. Error detection means for detecting an error that occurred in the process of executing the process specified by the process specification information included in the reproduction target content data, and when the error detection means detects an error, the reproduction target content data And sub-content reproducing means for reproducing sub-contents included in the content.

  In order to solve the above problems, a content playback method according to the present invention is a content playback method for causing a content playback device to play back content, wherein a main content playback step of playing back main content included in playback target content data; An error detection step for detecting an error that occurs in the process of executing the process designated by the process designation information included in the reproduction target content data, the information designating a process to be executed in the content reproduction apparatus. And a sub-content reproduction step of reproducing the sub-content included in the reproduction target content data when an error is detected in the error detection step.

  According to the above configuration, when an error is detected during the process executed based on the process designation information included in the reproduction target content data, the sub content included in the reproduction target content data is detected. Is played. For example, if an error screen display content for displaying an error screen is included as sub-contents in the reproduction target content data, the error screen is displayed when the error is detected.

  Here, the sub-content played back when an error is detected is included in the playback target content data. That is, it is not data stored in advance in the content reproduction device, nor is data newly acquired from the outside by the content reproduction device when an error is detected.

  According to the former feature, the provider that provides the reproduction target content data to the content reproduction device changes the sub-content included in the reproduction target content data, whereby the content reproduction device reproduces the content ( For example, an error screen) can be flexibly changed. At this time, in order to change the content to be played back by the content playback device when an error is detected, it is necessary to change data stored in the content playback device in advance or to change an algorithm for operating the content playback device. Does not occur. In other words, the data provider who provides the reproduction target content data to the content reproduction device can easily handle the content reproduced by the content reproduction device when an error is detected via the reproduction target content data.

  Further, according to the latter feature, the content reproduction apparatus can immediately reproduce sub-contents such as an error screen included in the reproduction target content without newly acquiring data from the outside when an error is detected. There is an effect that it can be reproduced.

  The content reproduction apparatus can be configured as an image display apparatus that displays an image based on content data. For example, display data including image data that is main content, image data that is sub-content, and processing designation information can be used as content data that is reproduced by a content reproduction device that is realized as an image display device. .

  In the content reproduction apparatus according to the present invention, the process designation information includes acquisition process designation information for designating a process for obtaining acquisition target content data including the next content to be reproduced next to the main content from an external device. And the content reproduction device further includes content data acquisition means for acquiring the acquisition target content data from the external device based on the acquisition processing designation information, and the error processing detection means includes the content data acquisition means. Preferably, the means detects an error that has occurred in the process of executing the process of acquiring the acquisition target content data.

  According to the above configuration, the process of acquiring acquisition target content data including the next content to be reproduced next to the main content is executed based on the acquisition process designation information included in the reproduction target content data. The If an error occurs during the acquisition process, the error detection means detects the error. That is, the content reproduction apparatus can detect a communication error that has occurred in the process of acquiring the acquisition target content data.

  Accordingly, if the content data to be played back includes sub-contents for displaying a communication error screen that informs the user that a communication error has occurred, the communication error screen is presented to the user when a communication error occurs. There is a further effect of being able to.

  In the content reproduction apparatus according to the present invention, the error detection unit detects an error that has occurred on the own device side in a process in which the content data acquisition unit executes a process of acquiring the acquisition target content data. It is preferable.

  According to the above configuration, the content reproduction apparatus detects an error that has occurred on the own apparatus side, a so-called terminal error, and reproduces the sub-content included in the reproduction target content data. Therefore, if the content data to be reproduced includes sub-contents for displaying a terminal error screen that informs the user that a terminal error has occurred, the terminal error screen is presented to the user when a terminal error occurs. There is a further effect of being able to.

  Note that the error on the own device side includes a failure that occurred in the communication path connecting the external device and the content playback device, such as a timeout error that cannot complete the acquisition of the content data to be acquired within a predetermined time (however, And faults occurring inside the content reproduction apparatus).

  In the content reproduction device according to the present invention, the error detection means is the error information provided from the external device, and is based on the error information indicating that the acquisition target content data cannot be transmitted. It is preferable to detect an error that has occurred in the apparatus.

  According to the above configuration, the content reproduction device detects an error that has occurred in the external device, a so-called server error, based on the error information, and reproduces the sub-content included in the reproduction target content data. Therefore, if the content data to be reproduced includes sub-contents for displaying a server error screen that informs the user that a server error has occurred, the server error screen is presented to the user when the server error occurs. There is a further effect of being able to.

  In the content reproduction apparatus according to the present invention, the process designation information includes reproduction process designation information for designating a process for reproducing the main content, and the error detection unit is configured so that the main content reproduction unit performs the reproduction process. It is preferable to detect an error that has occurred during the process of playing back the main content based on the designation information.

  According to said structure, the process which reproduces | regenerates the said main content is performed based on the said reproduction | regeneration process designation | designated information contained in the said reproduction | regeneration object content data. If an error occurs during the reproduction process, the error detection means detects the error. That is, the content reproduction apparatus can detect a reproduction error that has occurred in the process of reproducing the main content.

  Therefore, if the reproduction target content data includes a sub-content for displaying a reproduction error screen that informs the user that a reproduction error has occurred, the reproduction error screen is presented to the user when the reproduction error occurs. There is a further effect of being able to.

  The reproduction error that can be detected by the error detection means includes an error based on a description error in the display control information for displaying the reproduction error screen, and a processing error when rendering the reproduction error screen based on the display control information. Incompatibility of image data for displaying an image included in the reproduction error screen, processing error when drawing the image data, and the like can be given.

  In the content reproduction apparatus according to the present invention, the processing designation information includes sub-content designation information that designates sub-contents to be reproduced for each type of error that can be detected by the error detection means. The means reproduces sub-contents corresponding to the type of error detected by the error detection means based on the sub-content designation information among the plurality of sub-contents included in the reproduction target content data. It is preferable.

  According to said structure, there exists the further effect that it becomes possible to reproduce | regenerate the subcontent according to the kind of detected error.

  For example, the reproduction process designation information is a process of executing the process of acquiring the acquisition target content data, and (1) when the error detection unit detects an error occurring on the own apparatus side, Content can be played back, and (2) when the error detection means detects an error that has occurred in the external device, it can be configured to specify that the second sub-content is played back. At this time, (1) a first sub-content for displaying a terminal error screen for notifying the user that a terminal error has occurred in the reproduction target content data, and (2) a server error occurring to the user. Including the second sub-content for displaying the server error screen to inform the user of the terminal error screen when a terminal error occurs, or the server error screen when a server error occurs Can be presented.

  In the content reproduction apparatus according to the present invention, the process designation information includes alternative content reproduction process designation information for instructing a process for reproducing a specific alternative content in place of the next content. It is preferable that the apparatus further comprises alternative content reproduction means for reproducing the alternative content based on the alternative content reproduction processing designation information after the sub content reproduction means reproduces the sub content.

  According to the above configuration, when an error is detected during the process executed based on the process designation information included in the reproduction target content data, the sub content included in the reproduction target content data is detected. Is played. Further, after the sub-content is reproduced, the alternative content is reproduced based on the alternative content reprocessing designation information.

  That is, according to the above configuration, in addition to being able to reproduce the sub-content when an error is detected, there is the further effect that the alternative content can be subsequently reproduced.

  A content data providing apparatus according to the present invention is a content data providing apparatus that provides content data to a content reproduction apparatus, and includes first content including main content that is reproduced by the content reproduction apparatus in order to solve the above-described problem. First content data providing means for providing data to the content reproduction device, and second content data including next content to be reproduced next to the main content by the content reproduction device to the content reproduction device Second content data providing means, and when the content reproduction device is unable to reproduce the next content included in the second content data, the sub content to be reproduced by the content reproduction device is It is characterized by including.

  The content data providing method according to the present invention is a method for providing content data to a content reproduction device, wherein first content data including main content to be reproduced by the content reproduction device is provided to the content reproduction device. A content data providing step, and a second content data providing step for providing the content reproduction device with second content data including the next content to be reproduced next to the main content by the content reproduction device. The first content data includes sub-contents that are reproduced by the content reproduction device when the content reproduction device cannot reproduce the next content included in the second content data. It is characterized by that.

  According to the above configuration, the first content data provided to the content reproduction device includes the sub-content to be reproduced by the content reproduction device when the next content cannot be reproduced. Therefore, according to the above configuration, when the next content cannot be reproduced, the sub content can be reproduced by the content reproduction device.

  Therefore, by providing the first content data including the desired content to the content reproduction device, the content reproduction device can reproduce the desired content when the next content cannot be reproduced. There is an effect that can be. For example, if the first content data including the content for reproducing the desired error screen is provided to the content reproduction device, when the next content cannot be reproduced, the desired content image is displayed on the content reproduction device. The error screen can be played.

  In order to solve the above problems, a content reproduction system according to the present invention includes the content reproduction device as described above and the content data providing device as described above.

  According to the above configuration, the first content data provided by the content data providing device to the content reproduction device is the content data providing device in addition to the main content to be reproduced by the content reproduction device. When the content data could not be provided to the content reproduction device, that is, when the content reproduction device could not acquire the second content data from the external content data providing device, the content Sub-contents to be played back by the playback device are included. Therefore, according to the above configuration, when the second content data cannot be provided from the content data providing apparatus to the content reproduction apparatus, the content reproduction apparatus can reproduce the sub-content.

  Therefore, when the content data providing apparatus cannot provide the second content data by providing the first content data including the desired content to the content reproducing apparatus, the content reproducing apparatus The desired content can be reproduced. For example, if the first content data including the content for reproducing the desired error screen is provided to the content reproduction device, the second content data cannot be provided. A desired error screen can be reproduced.

  The data structure of the content data according to the present invention executes main content reproduced by the content reproduction device, processing designation information for designating processing to be executed by the content reproduction device, and processing designated by the processing designation information And sub-contents to be played back by the content playback device when an error occurs during the process.

  According to the above configuration, the content playback device that plays back the content data plays back the sub-content included in the content data when an error occurs in the process of executing the process specified by the process specification information. Can do. Therefore, by using the error processing content to be reproduced when an error occurs in the process of executing the processing specified by the processing specification information as the sub-content of the content data, It is possible to cause the content reproduction apparatus to execute the error processing.

  The process that can be designated by the process designation information includes a process for reproducing the main content or a process to be executed during the reproduction of the main content. Examples of the process to be executed during the reproduction of the main content that can be designated by the process designation information include a process of acquiring content data including the next content to be reproduced next to the main content.

  In order to solve the above-described problem, the content playback device according to the present invention is information that specifies content playback means for playing back content included in playback target content data and processing to be executed in the device itself. Error detection means for detecting an error that occurred during the process specified by the process specification information included in the target content data, and an error to be reproduced when an error is detected by the error detection means And an error content reproduction means for reproducing the error content designated by the error content designation information included in the reproduction target content data.

  In addition, a content playback method according to the present invention is a content playback method for causing a content playback device to play back content in order to solve the above-described problem, and a content playback step of playing back content included in playback target content data; An error detection step for detecting an error that occurs in the process of executing the process designated by the process designation information included in the reproduction target content data, the information designating a process to be executed in the content reproduction apparatus. When the error is detected in the error detection step, the error content to be reproduced when the error is detected, and the error content designated by the error content designation information included in the reproduction target content data Error content playback process, It is characterized in that are Nde.

  According to the above configuration, as the error content, the sub-content included in the reproduction target content data, or the content already stored in the own device when the reproduction of the reproduction target content is started, immediately By designating readable content, the content reproduction device and the content reproduction method have the same effects as the content reproduction device and the content reproduction method described above, respectively. Further, the content data provider that provides the content data to the content playback device or the content data provision device can set the content that the content playback device plays back when an error is detected with a higher degree of freedom. The effect which becomes.

  A content data providing apparatus according to the present invention includes first content data providing means for providing first content data including content to be reproduced by a content reproduction apparatus to the content reproduction apparatus, and the content reproduction apparatus next to the content. Second content data providing means for providing second content data including the next content to be reproduced to the content reproduction device, wherein the first content data is stored in the second content data by the content reproduction device. It is characterized in that error content designation information for designating an error content to be reproduced to the content reproduction device when the next content included in the content data cannot be reproduced is included.

  In addition, the content data providing method according to the present invention is a content data providing method for providing content data to a content reproduction device in order to solve the above-mentioned problem, wherein the first content includes content to be reproduced by the content reproduction device. A first content data providing step for providing data to the content reproduction device; and a second content data for providing the content reproduction device with second content data including a next content to be reproduced next to the main content by the content reproduction device. The content data providing step, wherein the first content data is an error to be reproduced when the content reproduction device cannot reproduce the next content included in the second content data. Designate content to the content playback device It contains error content specification information.

  According to the above configuration, as the error content, the sub-content included in the reproduction target content data, or the content already stored in the own device when the reproduction of the reproduction target content is started, immediately By designating readable content, the content data providing apparatus and the content data providing method have the same effects as the content data providing apparatus and the content data providing method described above, respectively. Further, the content data provider that provides the content data to the content playback device or the content data providing device can set the content that the content playback device plays back when an error is detected with a higher degree of freedom. The effect which becomes.

  In order to solve the above problems, the data structure of the content data according to the present invention includes content to be played back by a content playback device, process specification information for specifying a process to be executed in the content playback device, and the process specification information. And error content designation information for designating error content to be reproduced when an error occurs in the process of executing the process designated by.

  According to the above configuration, as the error content, the sub-content included in the reproduction target content data, or the content already stored in the own device when the reproduction of the reproduction target content is started, immediately By designating readable content, the same effect as the content data providing method can be obtained.

  The process that can be designated by the process designation information includes a process for reproducing the content or a process to be executed during the content reproduction. Examples of the process that can be specified by the process specification information and that should be executed during the reproduction of the content include a process of acquiring content data including the next content to be reproduced next to the content.

  The content reproduction apparatus may be realized by a computer. In this case, a content reproduction program for realizing the content reproduction apparatus in the computer by operating the computer as each of the above means and a computer-readable recording medium recording the program also fall within the scope of the present invention.

  The content data providing apparatus may be realized by a computer. In this case, a content data providing program for realizing the content data providing apparatus in the computer by operating the computer as each of the above means and a computer-readable recording medium recording the program also fall within the scope of the present invention.

  As described above, the content playback apparatus according to the present invention is information specifying the main content playback means for playing back the main content included in the playback target content data and the process to be executed in the own device, Error detection means for detecting an error that occurred during the process specified by the process specification information included in the content data, and when the error detection means detects an error, the error detection means is included in the content data to be played back. And a sub-content reproducing means for reproducing the sub-content being reproduced.

  In addition, the content playback method according to the present invention is a content playback method for causing a content playback device to play back content, as described above, wherein the main content playback step of playing back the main content included in the playback target content data; An error detection step for detecting an error that occurred in the process of executing the process designated by the process designation information included in the reproduction target content data, which is information designating the process to be executed in the content reproduction device; A sub-content reproduction step of reproducing the sub-content included in the reproduction target content data when the error detection means detects an error.

  Therefore, the provider who provides the content reproduction data to the content reproduction device changes the content (for example, an error screen) that the content reproduction device reproduces when an error is detected by changing the sub-content included in the reproduction target content data. It can be changed flexibly. In addition, the content reproduction apparatus can immediately reproduce sub-contents such as an error screen included in the reproduction target content data without requiring time for newly acquiring data from the outside when an error is detected.

  A content data providing apparatus according to the present invention is a content data providing apparatus that provides content data to a content reproduction apparatus, and provides the content reproduction apparatus with first content data including main content to be reproduced by the content reproduction apparatus. First content data providing means; and second content data providing means for providing the content reproduction apparatus with second content data including the next content to be reproduced by the content reproduction apparatus after the main content. , And the content reproduction device includes sub-contents to be reproduced by the content reproduction device when the next content included in the second content data cannot be reproduced.

  The content data providing method according to the present invention is a method for providing content data to a content reproduction device, wherein first content data including main content to be reproduced by the content reproduction device is provided to the content reproduction device. A content data providing step, and a second content data providing step for providing the content reproduction device with second content data including the next content to be reproduced by the content reproduction device after the main content. The first content data includes sub-contents that are reproduced by the content reproduction device when the content reproduction device cannot reproduce the next content included in the second content data. .

  Therefore, by providing the first content data including the desired content to the content reproduction device, the content reproduction device can reproduce the desired content when the next content cannot be reproduced. Can do. For example, if the first content data including the content for reproducing the desired error screen is provided to the content reproduction device, when the next content cannot be reproduced, the desired content image is displayed on the content reproduction device. The error screen can be played.

(Content playback system)
First, the configuration of the content reproduction system 1 according to the present embodiment will be described with reference to FIG.

  FIG. 1 is a block diagram showing the configuration of the content reproduction system 1. As shown in FIG. 1, the content playback system 1 includes at least one content playback device 100, a relay server (content data providing device) 200, and a network album database (DB) 300. . Each device is connected to be communicable with each other via a network such as the Internet.

  The content reproduction apparatus 100 is an apparatus for acquiring content data from the relay server 200 and reproducing the content included in the acquired content data. The content reproduction apparatus 100 is realized as, for example, a television receiver installed in a user's home. In FIG. 1, the content reproduction apparatus 100 included in the content reproduction system 1 is one, but the content reproduction system 1 may include a plurality of content reproduction apparatuses configured similarly to the content reproduction apparatus 100. Good.

  The relay server 200 is a device for providing content data to the content reproduction device 100. The network album DB 300 is a device for providing the relay server 200 with various data necessary for synthesizing content data in the relay server 200. The relay server 200 and the network album DB 300 are installed, for example, in a business office of a business operator that operates the content reproduction system 1. In FIG. 1, the relay server 200 and the network album DB 300 configured separately are shown, but these may be mounted in one housing as a single device.

  Next, the outline | summary of operation | movement of the content reproduction system 1 is demonstrated based on FIGS.

  First, the case where the content reproduction system 1 operates normally without error will be described with reference to FIG.

  As shown in FIG. 2A, the content playback apparatus 100 sends a top screen content request R101 to the relay server 200 in order to start playback of the content. When receiving the top screen content request R101, the relay server 200 synthesizes the top screen content (reproduction target content data, first content data) C101. At this time, the relay server 200 acquires various data necessary for synthesizing the top screen content C101 from the network album DB 300. The relay server 200 transmits the combined top screen content C101 to the content reproduction device 100. The content playback apparatus 100 acquires the top screen content C101, and plays back and displays the top screen I101 that is the main content of the top screen content C101.

  FIG. 2B is a screen configuration diagram illustrating the top screen I101 displayed on the content reproduction apparatus 100 by reproducing the top screen content C101. On the top screen I101, a predetermined number (three in the illustrated example) of album groups recently viewed by the user on the content reproduction apparatus 100 is displayed in a list. The user can select a desired album from the album group displayed as a list on the top screen I101.

  When the user selects an album, the content playback apparatus 100 then sends a title screen content request R102 to the relay server 200 in order to display the title screen I102 of the selected album (see FIG. 2A). This title screen content request R102 includes an album ID that uniquely identifies the album selected by the user. The relay server 200 refers to the album ID included in the title screen content request R102, and synthesizes the title screen content (acquisition target content data, second content data) C102 corresponding to the album ID. At this time, the relay server 200 acquires various data necessary for synthesizing the title screen content C102 from the network album DB 300. The relay server 200 transmits the combined title screen content C102 to the content reproduction device 100. The content reproduction apparatus 100 reproduces the title screen content C101 and displays the title screen I101 that is the next content.

  FIG. 2C is a screen configuration diagram illustrating a title screen I102 displayed on the content reproduction device 100 by reproducing the title screen content C102. In the title screen I102, the title of the album selected by the user (in the example shown, “melody of sunlight”), the creation date (“2006/07/01” in the example shown), and the creator (in the example shown, “ Yuuya Aku "), comments (in the example shown," Our cute cat ... ") and the like are displayed. The user can instruct the content reproduction apparatus 100 to start the slide show reproduction after confirming the outline of the album.

  The content playback apparatus 100 sends the first slide content request R111 to the relay server 200 while waiting for a user operation to instruct the start of slideshow playback (see FIG. 2A). The relay server 200 transmits the slide content (content data) C111 to the content reproduction device 100 as a response to the slide content request R111. The content reproduction apparatus 100 displays the first slide including the first photo of the selected album by reproducing the slide content C111. The content reproduction apparatus 100 thereafter repeats the same processing, and sequentially displays the second and third slides at predetermined time intervals. Thereby, the user can browse a plurality of photos belonging to the selected album as slides displayed one after another.

  Next, a case where an error has occurred in the communication process for acquiring the title screen content C102 will be described with reference to FIG. 1 and FIGS.

  While reproducing the top screen content C101 acquired from the relay server 200, the content reproduction apparatus 100 performs a communication process for acquiring the title screen content C102 to be reproduced next. If an error occurs in this communication process, the content reproduction apparatus 100 cannot display the title screen I102.

  In preparation for the occurrence of such an error, in the top screen content C101, in addition to the display control information for displaying the top screen I101 as the main content, the display control for displaying the error screen E200 as the sub content. Contains information. As shown in FIG. 1, when an error occurs in the communication process for acquiring the title screen content C102, the content reproduction device 100 reproduces the error screen E200 based on the latter display control information.

  In particular, as shown in FIG. 3A, when the content reproduction apparatus 100 detects that an error has occurred in the content reproduction apparatus 100, the terminal error screen E201 that is the first sub-content included in the content C101. Is displayed. As illustrated in FIG. 3B, the terminal error screen E201 is an error screen that presents to the user that an error has occurred in the content reproduction apparatus 100, which is a terminal, such as “Terminal error has occurred”. Consists of strings. Further, the terminal error screen E201 indicates that when the determination button is pressed, the screen returns to the top screen. When the user who has confirmed this performs an operation of pressing the enter button, the content reproduction apparatus 100 reproduces again the top screen I101 that is the main content of the top screen content C101 as the alternative content to be displayed instead of the title screen I102. .

  As shown in FIG. 4A, when the content reproduction apparatus 100 detects that an error has occurred in the relay server 200 by receiving the error code EC, the second content included in the content C101 is detected. A server error screen E202 which is sub-contents is displayed. As illustrated in FIG. 4B, the server error screen E202 is an error screen that indicates to the user that an error has occurred in the relay server 200, and includes a character string such as “Server error has occurred”. It consists of Further, the terminal error screen E202 indicates that when the determination button is pressed, the screen returns to the top screen. When the user who has confirmed this performs an operation of pressing the enter button, the content reproduction apparatus 100 reproduces again the top screen I101 that is the main content of the top screen content C101 as the alternative content to be displayed instead of the title screen I102. .

  The terminal error screen E201 and the server error screen E202 are generated by the content reproduction device 100 based on display control control information stored in advance in the top screen content C101. Therefore, even when it is detected that an error has occurred in the own device or when an error has occurred in the relay server 200 based on the error code EC, the content reproduction device 100 is based on the top screen content C101. These can be displayed. Moreover, the top screen content C101 is always acquired by the content reproduction device 100 at the time when communication processing for acquiring the title screen content C102 can be started. Therefore, the content reproduction apparatus 100 can start processing for displaying the terminal error screen E201 or the server error screen E202 immediately when a terminal error or a server error is detected.

  4A shows a configuration in which the relay server 200 sends the error code EC to the content reproduction apparatus 100. However, as shown in FIG. 5A, the relay server apparatus 200 generates an error when a server error occurs. It is also possible to modify the configuration in which the content C200 is sent to the content reproduction device 100. In this case, when the relay server 200 detects that an error has occurred in its own device, the relay server 200 generates error content C200 for presenting to the user that the server error has occurred. Then, the content playback apparatus 100 displays the server error screen I200 (see FIG. 5B) by playing back the error content C200 received as a response to the title screen content request R102.

(Data structure of content data)
Next, content data reproduced by the content reproduction apparatus 100 will be described with reference to FIGS.

  FIG. 6 is a data structure diagram showing a data structure of content data played back by the content playback apparatus 100. In particular, FIG. 6 shows the data structure of the above-described top screen content C101.

  As shown in FIG. 6, the top screen content C101, which is content data, is configured as an aggregate of a plurality of files. Specifically, a file top. Containing state transition definition information (processing designation information) 1011 is stored. mtd, a file top. containing top screen display control information 1012 for displaying the top screen I101 as the main content. svg, a file localerror.file storing terminal error screen display control information 1013 for displaying the terminal error screen E201 as the first sub-content. svg, a file servererror.file storing server error screen display control information 1014 for displaying the server error screen E202 as the second sub-content. A parameter file in which svg and various parameters 1015 are stored is included in the top screen content C101. In the example shown in FIG. 6, a file album.ID for storing the album ID input by the user is used as the parameter file. txt and error. for storing an error code for specifying the type of error that has occurred. txt is used.

  When the top screen I101 includes an image, image data for displaying the image may be included in the top screen content C101. The same applies to the case where the terminal error screen E201 includes an image and the case where the server error screen E202 includes an image.

  The state transition definition information 1011 is a script that specifies a process to be executed by the content reproduction apparatus 100 for reproducing the top screen I101 and a process to be executed for reproducing the title screen I102 after the top screen I101. It is configured. The content reproduction apparatus 100 sequentially executes the processes specified in the state transition definition information 1011.

  FIG. 7A is a diagram showing a specific example of the state transition definition information 1011 described by MTD (Message Template Definition). The state transition definition information 1011 illustrated in FIG. 7A includes commands 1011a to 1011d.

  Reference numeral 1101a denotes a command (reproduction processing designation information) for designating processing for reproducing the top screen I101 which is the main content of the top screen content C101. Specifically, top. A process for generating and displaying the top screen I101 based on svg is specified. In addition, in the command 1101a, the return value (album ID) of the process is set to the parameter file album. It is specified to be stored in txt.

  Reference numeral 1011b denotes a command (acquisition process designation information) for designating a process for obtaining the title screen content C102 including the title screen I102 to be reproduced next to the top screen I101. Specifically, @uri. For a server having a URI stored in txt, method-getTitle. The method defined in txt specifies the process for transmitting the title screen content request R012. In addition, in command 1011b, album. The album ID stored in txt is transmitted together with the title screen content request R102, and the return value (error code) of the process is error. It is specified to be stored in txt. When the title screen content C102 is acquired and the process is normally completed, an error code 200 is received. When the error code EC is sent from the relay server 200 as a response to the title screen content C102, the error code 400 is displayed. If an error is detected and the process is terminated abnormally, error code 500 is error. stored in txt.

  1011c is error. This is a command for branching the processing based on the error code stored in txt. Specifically, when the error code is 200, title. It is specified to move the process to mtd, if the error code is 400, move the process to a command whose id is servererror, or if the error code is 500, move the process to a command whose id is localerror. Yes. Here, title. mtd is state transition definition information included in the title screen content C102. When the error code is 200, that is, when the acquisition of the title screen content C102 has been normally completed, the processing moves to the first command of the state transition definition information of the title screen content C102.

  1011d is a command group (sub-content designation information, alternative content designation information) that designates sub-contents to be reproduced when an error occurs for each type of error. The first command whose id is servererror is a command that is executed when the error code is 400. Specifically, as a process to be executed when a server error occurs, servererror. A process for generating and displaying a server error screen E202 as sub-content based on svg is designated. At the same time, the top screen I101 is displayed as a display screen transitioning from the server error screen E202, that is, as a content to be reproduced next to the server error screen E202, instead of the title screen I102 that could not be reproduced. Is specified. On the other hand, the id is localerror and the second command is a command executed when the error code is 500. Specifically, as a process to be executed when a terminal error occurs, localerror. A process for generating and displaying a terminal error screen E201 as sub-contents from svg is designated. In addition, it is specified that the top screen I101 is displayed as a display screen transitioned from the terminal error screen E201, that is, as a content to be reproduced next to the terminal error screen E201, instead of the title screen I102 that could not be reproduced. Has been.

  Each of the display control information 1012 to 1014 includes layout definition information for designating a screen drawing method and user operation definition information for designating a process to be executed according to an operation performed by a user on an object on the screen. The In particular, the top screen display control information 1012 includes layout definition information that specifies a drawing method of the top screen I101 that is the main content, and the terminal error screen display control information 1013 is the terminal error screen that is the first sub content. The server error screen display control information 1014 includes layout definition information that specifies the drawing method of the server error screen E202 that is the second sub-content.

  FIG. 7B shows a modified example of the state transition definition information shown in FIG. 7A. In the case where error content C200 is sent from the relay server 200 as a response to the title screen content request R102. FIG. 5 is a diagram showing a configuration of preferable state transition definition information.

  The difference between the state transition definition information shown in FIG. 7B and that shown in FIG. 7A is that the error code is 300 in the command 1011c ′ (when the error content C200 is received). It is specified that the process is transferred to the state transition definition information (error.mtd) of the acquired error content C200. Thus, when the content reproduction apparatus 100 receives the error content C200 as a response to the title screen content request R102, the content reproduction apparatus 100 switches the reproduction target content to the error content C200, and based on the display control information included in the error content. An error screen I200 can be displayed.

  FIG. 7C shows another modification of the state transition definition information shown in FIG. 7A, and both the error code EC and the error content C200 are sent as a response to the title screen content request R102. It is the figure which showed the structure of the preferable state transition definition information when there is a possibility that it will be received.

  The difference between the state transition definition information shown in FIG. 7B and that shown in FIG. 7A is that the error code is 300 (when the error content C200 is received), and the acquired error content C200. It is specified that both the process is transferred to the state transition definition information (error.mtd) and the process is transferred to the command whose id is servererror when the error code is 400 (when the error code EC is received). It is a point that has been. Thus, when the content reproduction apparatus 100 receives the error content C200 as a response to the title screen content request R102, the content reproduction apparatus 100 switches the reproduction target content to the error content C200, and based on the display control information included in the error content. The error screen I200 can be displayed, and when the error code EC is received as a response to the title screen content request R102, servererror. A server error screen E202 can be displayed based on svg.

  FIG. 8 is a diagram showing layout definition information included in the server error screen display control information 1014 as an example of layout definition information. The layout definition information shown in FIG. 8 is described by SVG (Scalable Vector Graphics).

  As shown in FIG. 8, the layout definition information includes an object drawn on the screen and a command group for designating the layout of the object. In the layout definition information, an object drawn on the screen may be specified directly as a literal (especially in the case of a character string or the like), or may be specified as a link to external data (especially image data or the like). If). In the layout definition information illustrated in FIG. 8, the character string “Server error has occurred” displayed on the server error screen E202 is specified together with the drawing position and drawing font size of the character string.

  The content data such as the title screen content C102, the slide content C111, C112,... Has the same structure as the top screen content C101 described above.

(Configuration of content playback device)
Next, a schematic configuration of the content reproduction apparatus 100 will be described with reference to FIGS.

  FIG. 9 is a block diagram showing a main configuration of the content reproduction apparatus 100. As shown in FIG.

  As shown in FIG. 9, the content reproduction apparatus 100 includes a control unit 110, a communication unit 120, a storage unit 130, a display unit 140, and an IR reception unit 150.

  The communication unit 120 is a communication interface for transmitting / receiving various data to / from the relay server 200. The control unit 110 can transmit a content request to the relay server 200 or receive content data from the relay server 200 via the communication unit 120.

  The storage unit 130 is a storage device such as a memory. The control unit 110 can store the content data acquired from the relay server device 200 via the communication unit 120 in the storage unit 130. Further, the control unit 110 can store parameters necessary for reproducing the content data in the storage unit 130 and can refer to them at an arbitrary timing.

  The display unit 140 is a display device such as a liquid crystal display panel or a cathode ray tube. The control unit 110 can display an image obtained by reproducing the content data on the display unit 140 and present it to the user.

  The IR receiver 150 is a communication interface for performing infrared communication with the remote controller 160. The remote controller 160 sends operation information indicating the content of the operation received from the user to the IR receiver 150 on an infrared carrier wave. The control unit 110 can execute various processes based on the operation information acquired via the IR reception unit 150.

  The function of the control unit 110 will be described in detail later with reference to FIG.

  FIG. 10 is an overview diagram showing an overview of the content reproduction apparatus 100.

  As shown in FIG. 10, the content reproduction apparatus 100 can be realized as a television receiver, for example. When the content reproduction apparatus 100 is realized as a television receiver, a display panel included in the television receiver can be used as the display unit 140, and powerful slide show reproduction can be performed.

  FIG. 10 also shows a configuration example of the remote controller 160. In the figure, the remote controller 160 includes a numeric button part 161 and a cross button part 163.

  The numeric button portion 161 includes numeric buttons corresponding to at least 0-9. The user can input an arbitrary number of digits by appropriately pressing these buttons. The user can input numerical values such as an album ID by using the numerical button unit 161.

  The command button unit 162 includes one or more command buttons. Each command button is associated with a specific instruction in advance or according to the progress of processing. The user can input an instruction associated with the command button by pressing the command button. For example, the user can give an instruction to start browsing the album to the content playback apparatus 100 by pressing a predetermined command button.

  The cross button portion 163 includes four buttons corresponding to up, down, left, and right, and a determination button arranged at the center of these four buttons. The user presses the up / down / left / right button to specify the position of a desired object from the object group displayed on the display unit 140, or presses the enter button to specify the object specified at that time. Can be selected. For example, the user can designate and select a desired image from thumbnails displayed in a list. In addition, the user can input a next image display instruction for instructing to display the next image of the currently displayed image by pressing the right button when the slide for displaying the image is displayed. it can.

  FIG. 11 is a block diagram illustrating a main configuration of the control unit 110 included in the content reproduction apparatus 100.

  As shown in FIG. 1, the control unit 110 includes an event processing unit 111, a data management unit 112, a display screen generation unit 113, an image data development unit 114, a display control unit 115, a timer unit 116, and a user operation analysis unit. 117 is included.

  The data management unit 112 is a block for performing communication processing for acquiring content data from the relay server 200 and managing the acquired content data. The data management unit 112 sends a content request for acquiring content data to the relay server device 200 via the communication unit 120 in accordance with an instruction from the event processing unit 111. If acquisition of the content data is successful, the acquired content data is stored in the storage unit 130 and a notification of successful data acquisition is sent to the event processing unit 111. Further, if the acquisition of the content data fails, the event processing unit 111 is notified of a data acquisition failure notification. Specifically, when an error code EC is received from the relay server 200 as a response to the content request, a server error occurrence notification is sent, and the content data is sent within a predetermined time after the content request is transmitted. If the acquisition cannot be completed, a notification of terminal error occurrence is sent to the event processing unit 111.

  The display screen generation unit 113 is a block for generating a display screen to be displayed on the display unit 140 based on display control information included in the content data, in particular, layout definition information. When a display screen generation request for requesting generation of a display screen based on specific display control information is received from the event processing unit 111, the display screen generation unit 113 receives a data request for requesting the display control information from the data management unit. 112. The data management unit 112 reads the requested display control information from the storage unit 130 and passes it to the display screen generation unit 113. In addition, if there is image data specified in the display control information as an object to be displayed, the data management unit 112 also reads out the image data from the storage unit 130 and passes it to the display screen generation unit 113. Upon receiving the display control information from the data management unit 112, the display screen generation unit 113 generates a display screen based on the received display control information, passes the generated display screen to the display control unit 115, and successfully displays the display screen. A notification is sent to the event processing unit 113.

  When the display control information specifies that image data is to be displayed and the image data is compressed image data that needs to be expanded, the display screen generation unit 113 passes the compressed image data to the image data expansion unit 114. The image data expansion unit 114 expands the compressed image data into a displayable state, and returns the expanded image data to the display screen generation unit 113. When the display control information specifies that image data is to be displayed, the display screen generation unit 113 generates a display screen including the expanded image data obtained from the image data expansion unit 114, and displays the generated display screen It passes to the control unit 115. When the process of generating the display screen according to the display control information is not completed, such as when the image data specified in the display control information is image data in a format that cannot be expanded by the image data expanding unit 114, the display screen generating unit 113 A display screen generation failure notification is sent to the event processing unit 113.

  The display control unit 115 is a block for causing the display unit 140 to display the display screen generated by the display screen generation unit 113. The display control unit 115 controls the display unit 140 to display the display screen generated by the display screen generation unit 113 at the timing instructed from the event processing unit 111.

  The timer unit 116 is a block for notifying the event processing unit 111 of slide display switching timing in slide show reproduction. When the display control unit 115 starts displaying the slide, the event processing unit 111 instructs the timer unit 116 to start the timer. The timer unit 116 starts the timer when instructed to start the timer. Then, the timer unit 116 returns a timer notification to the event processing unit 111 when a predetermined slide display time has elapsed since the timer was started. When the event processing unit 111 receives the timer notification, the event processing unit 111 instructs the display control unit 115 to display the slide next to the currently displayed slide.

  The user operation analysis unit 117 is a block for notifying the event processing unit 111 of the content of the operation performed by the user. When it is detected that a user operation has occurred via the IR receiver 150, the user operation analyzer 117 passes an operation information notification indicating the content of the operation to the event processor 111.

  The event processing unit 111 is a block for controlling each of the processing units based on state transition definition information (MTD) included in the content. The event processing unit 111 reads the state transition definition information from the storage unit 130 via the data management unit 112 and causes any of the above processing units to execute a command included in the read state transition definition information.

(Processing of content playback system)
The processing of the content reproduction system 1 will be described as follows with reference to FIGS.

  FIG. 12 is a sequence diagram showing a flow of processing executed in the content reproduction system 1 in the case of normal operation without error.

  The processing in the content reproduction system 1 is started when, for example, an album browsing start instruction for instructing start of album browsing is given to the content reproduction apparatus 100 by the user. Upon receiving an album browsing start instruction from the user, the content reproduction device 100 transmits a top screen content request R101 to the relay server 200. When the relay server 200 receives the top screen content request R101, the relay server 200 requests the network album DB 300 for composition data D101 necessary for composing the top screen content C101. The network album DB 300 provides the relay server 200 with composition data D101 necessary for composition of the top screen content C101 in response to the composition data request R101 ′. The relay server 200 synthesizes the top screen content C101 using the obtained composition data D101. When the composition of the top screen content C101 is completed, the top screen content C101 is transmitted to the content reproduction device 100.

  The state transition definition information 1011 of the top screen content C101 includes a command that instructs to generate and display the top screen I101 that is the main content based on the top screen display control information 1012 included in the top screen content C101. (See FIG. 6). The content reproduction apparatus 100 that has acquired the top screen content C101 generates and displays the top screen I101 that is the main content based on the top screen display control information 1012 in accordance with this instruction. Further, the state transition definition information 1011 of the top screen content C101 includes a command for instructing transmission of the title screen content request R102 including the album ID input by the user to the relay server 200. In accordance with this instruction, the content reproduction device 100 transmits a title screen content request R102 including the designated album ID to the relay server 200 when the album ID is designated by the user.

  When the relay server 200 receives the title screen content request R102, the relay server 200 requests the network album DB 300 for composition data D102 necessary to synthesize the title screen content C102 of the album specified by the album ID. The network album DB 300 provides composition data D102 necessary for composition of the title screen content C102 to the relay server 200 in response to the composition data request R102 ′. The relay server 200 synthesizes the title screen content C102 using the obtained synthesis data D102. When the composition of the title screen content C102 is completed, the title screen content C102 is transmitted to the content reproduction device 100.

  The state transition definition information of the title screen content C102 includes a command that instructs to generate and display the title screen I102 based on the display control information of the title screen content C102. The content playback apparatus 100 that has acquired the title screen content C102 generates and displays the title screen I102 based on the display control information in accordance with this designation. At this time, the display screen displayed on the content reproduction apparatus 100 changes from the top screen I101 to the title screen I102. In addition, the state transition definition information of the title screen content C102 includes a command for instructing the relay server 200 to transmit a slide content request R111 for requesting acquisition of the first slide content C111. In accordance with this designation, the content reproduction apparatus 100 transmits a slide content request R111 to the relay server 200 to request the first slide content C111.

  When the relay server 200 receives the slide content request R111, the relay server 200 requests the network album DB 300 for composition data D111 necessary to compose the slide content C111. The network work album DB 300 provides the relay server 200 with composition data D111 necessary for composition of the slide contents C111 in response to the composition data request R111 ′. The relay server 200 synthesizes the first slide content C111 using the obtained composition data D111. When the composition of the slide content C1111 is completed, the slide content C111 is transmitted to the content reproduction device 100.

  The state transition definition information of the title screen content C102 further includes a command for instructing to move the processing to the state transition definition information of the slide content C111 when a slide show reproduction start instruction is received from the user. When the content playback apparatus 100 receives the slide show playback start instruction, the content playback apparatus 100 reads the state transition definition information of the slide content C111 that has already been acquired, and starts executing the process specified in the state transition definition information.

  The state transition definition information of the slide content C111 includes a command that instructs to generate and display the first slide based on the display control information of the slide content C111. In accordance with this instruction, the content reproduction apparatus 100 generates and displays a first slide based on the display control information. At this time, the display screen displayed on the content reproduction apparatus 100 transitions from the title screen I102 to the first slide. Further, the state transition definition information of the slide content C111 includes a command for instructing the relay server 200 to transmit a slide content request R112 for requesting acquisition of the second slide content C112. In accordance with this designation, the content reproduction apparatus 100 transmits a slide content request R112 to the relay server 200 and requests acquisition of the second slide content C112.

  When the relay server 200 receives the slide content request R112, the relay server 200 requests the network album DB 300 for composition data D112 necessary for composing the slide content C112. The network work album DB 300 provides the relay server 200 with composition data D112 necessary for composition of the slide content C112 in response to the composition data request R112 ′. The relay server 200 synthesizes the second slide content C112 using the obtained composition data D112. When the composition of the slide content C1112 is completed, the slide content C112 is transmitted to the content reproduction device 100.

  The state transition definition information of the slide content C111 further instructs to display a slide next to the first slide when a predetermined slide display time has elapsed since the start of the display of the first slide. When the next image display instruction is received from the user, a command for instructing to move the process to the state transition definition information of the slide content C112 is included. In accordance with this instruction, the content reproduction apparatus 100 is in a state of the slide content C111 when a predetermined slide display time has elapsed after starting the display of the first slide or when a next image display instruction is received from the user. The transition definition information is read, and execution of the process specified in the read state transition definition information is started. Note that the point in time when the predetermined slide display time has elapsed since the start of the display of the first slide can be specified as the point in time when the event processing unit 111 receives a timer notification from the timer unit 116, for example. Further, the time point when the next image display instruction is received from the user can be specified as the time point when the event processing unit 111 receives the next image display instruction notification from the user operation analysis unit 117, for example.

  The state transition definition information of the slide content C112 includes a command that instructs to generate and display the second slide from the display control information included in the slide content C112. In accordance with this instruction, the content reproduction device 100 generates and displays the second slide based on the display control information. At this point, the display screen displayed on the content reproduction apparatus 100 transitions from the first slide to the second slide.

  The content reproduction apparatus 100 repeats the above processing for the slides after the third slide, thereby sequentially displaying the first to nth slides at a predetermined timing.

  FIG. 13 is a sequence diagram showing a flow of processing executed in the content reproduction system 1 when a terminal error occurs.

  It should be noted in FIG. 13 that a terminal error has occurred in which the content reproduction apparatus 100 fails to acquire the title screen content C102. The content reproduction apparatus 100 determines that a terminal error has occurred when acquisition of the title screen content C102 cannot be completed within a predetermined time after transmitting the title screen content request R102.

  In the state transition definition information 1011 of the top screen content C101, when a terminal error occurs, the terminal error screen E201 is generated and displayed based on the terminal error screen display control information 1013 included in the top screen content C101. Contains commands to direct. When the content reproduction apparatus 100 detects a terminal error, the content reproduction apparatus 100 generates and displays a terminal error screen E201 according to this instruction (see FIG. 3B). At this time, the display screen displayed on the content reproduction apparatus 100 transitions from the top screen I101 to the terminal error screen E201. When the operation of pressing the enter button is received from the user while the terminal error screen E201 is displayed, the content reproduction apparatus 100 changes the display screen to the top screen I101 that displays a list of a plurality of albums again (FIG. 2 ( b)). The user can designate a desired album again while the top screen I101 is displayed again.

  FIG. 14 is a sequence diagram showing a flow of processing executed in the content reproduction system 1 when a server error occurs.

  It should be noted in FIG. 14 that the error code EC is sent from the relay server 200 to the content reproduction apparatus 100 as a response to the title screen content request R102. When the content reproduction apparatus 100 acquires the error code EC from the relay server 200 as a response to the title screen content request R102, the content reproduction apparatus 100 determines that a server error has occurred.

  In the state transition definition information 1011 of the top screen content C101, when a server error occurs, the server error screen E202 is generated and displayed based on the server error screen display control information 1014 included in the top screen content C101. Contains commands to direct. When the content reproduction apparatus 100 detects a server error, it generates and displays a server error screen E202 in accordance with this instruction (see FIG. 4B). At this point, the display screen displayed on the content reproduction apparatus 100 transitions from the top screen I101 to the server error screen E202. When receiving an operation of pressing the enter button from the user while the server error screen E202 is displayed, the content reproduction device 100 changes the display screen to the top screen I101 that displays a list of a plurality of albums again (FIG. 2 ( b)). With the top screen I101 displayed again, the user can specify a desired album again.

  FIG. 15 is a sequence diagram showing another processing flow executed in the content reproduction system 1 when a server error occurs.

  It should be noted in FIG. 15 that the error content C200 is sent from the relay server 200 to the content reproduction apparatus 100 as a response to the title screen content request R102. If the content acquired as a response to the title screen content request R102 is the error content C200, the content reproduction device 100 determines that a server error has occurred.

  When processing when a server error occurs is executed based on the error content C200, the state transition definition information of the top screen content C101 moves to the state transition definition information of the error content C200 when a server error is detected. Command must be included. When a server error is detected in accordance with this instruction, the content reproduction device 100 reads the state transition definition information of the error content C200 and starts executing the process specified in the read state transition definition information.

  The state transition definition information of the error content C200 includes a command that instructs to generate and display the server error screen I200 from the display intention control information included in the error content C200. The content reproduction apparatus 100 generates and displays the server error screen I200 based on the display control information of the error content C200 (same as the server error screen display control information 1014 of the top screen content C101) (FIG. 5B). reference). At this point, the display screen displayed on the content reproduction apparatus 100 transitions from the top screen I101 to the server error screen I200. In addition, the state transition definition information of the error content C200 is an instruction to shift the processing to the state transition definition information 1011 of the top screen content C101 when an operation of pressing the enter button is received from the user while the server error screen I200 is displayed. Command to be included. When receiving the operation of pressing the enter button, the content reproduction device 100 reads the state transition definition information 1011 of the top screen content C101 and starts executing the process specified in the read state transition definition information 1011.

(Processing of content playback device)
The processing of the content reproduction apparatus 100 will be described with reference to FIGS.

  FIG. 16 is a flowchart showing a flow of processing executed in the content reproduction apparatus 100.

  When the content reproduction apparatus 100 starts processing, first, the data management unit 112 sends a top screen content request R101 to the relay server 200 (S101). Then, the data management unit 112 acquires the top screen content C101 as a response to the top screen content request R101 (S102). When the acquisition of the top screen content C101 is completed (S102: Yes), the data management unit 112 stores the top screen content C101 in the storage unit 130 and sends a data acquisition success notification to the event processing unit 111.

  When receiving the data acquisition success notification from the data management unit 112, the event processing unit 111 reads the state transition definition information 1011 of the top screen content C 101 from the storage unit 130. The subsequent processing is realized by sequentially executing the commands of the state transition definition information C1011.

  The event processing unit 111 requests the display screen generation unit 113 to generate the top screen I101. The display screen generation unit 113 reads the display control information 1012 of the top screen content C101 from the storage unit 130, and generates the top screen I101 based on this (S103). The generated top screen I101 is transferred to the display control unit 115. The display control unit 115 displays the passed top screen I101 on the display unit 140 (S104).

  The user operation analysis unit 117 accepts selection of an album by the user, and returns the album ID of the selected album to the event processing unit 111 (S105). The event processing unit 111 requests the data management unit 112 to acquire the title screen content C102 of the album specified by the album ID. In response to this request, the data management unit 112 sends a title screen content request R102 to the relay server 200 (S106).

  In the communication process after transmission of the title screen content request R102, error analysis S107 is performed. When it is determined by the error analysis S107 that the title screen content C102 has been acquired normally, the error code 200 is displayed in the parameter file error. stored in txt. If it is determined that the title screen content C102 cannot be acquired due to a server error, the error code 400 is displayed in the parameter file error. stored in txt. If it is determined that the title screen content C102 cannot be acquired due to a terminal error, an error code 400 is displayed in the parameter file error. stored in txt. The event processing unit 111 includes a parameter file error. The subsequent processing is determined with reference to txt (S108).

  Parameter file error. When the error code 200 is stored in txt, that is, when the title screen content C102 is normally acquired, the event processing unit 111 reads the state transition definition information 1011 of the title screen content C102 from the storage unit 130. The event processing unit 111 requests the display screen generation unit 113 to generate the title screen I102 based on the state transition definition information of the title screen content C102. The display screen generation unit 113 reads the display control information of the title screen content C102 from the storage unit 130, and generates the title screen I102 based on this (S109). The generated title screen I102 is transferred to the display control unit 115. The display control unit 115 displays the passed title screen I102 on the display unit 140 (S110). As described above, when the title screen I102 can be normally displayed on the display unit 140, the slide content reproduction S111 for sequentially displaying the slides is executed.

  Parameter file error. When the error code 500 is stored in txt, that is, when the title screen content C102 cannot be normally acquired due to a terminal error, the event processing unit 111 is based on the state transition definition information 1011 of the top screen content C101. The display screen generation unit 113 is requested to generate the terminal error screen E201. The display screen generation unit 113 reads the display control information 1013 of the top screen content C101 from the storage unit 130, and generates a terminal error screen E201 based on this (S112). The generated terminal error screen E201 is passed to the display control unit 115. The display control unit 115 displays the passed terminal error screen E201 on the display unit 140 (S113).

  Parameter file error. When the error code 400 is stored in txt, that is, when the title screen content C102 cannot be normally acquired due to a server error, the event processing unit 111 is based on the state transition definition information 1011 of the top screen content C101. The display screen generation unit 113 is requested to generate the server error screen E202. The display screen generation unit 113 reads the display control information 1014 of the top screen content C101 from the storage unit 130, and generates a server error screen E202 based on this (S114). The generated server error screen E202 is transferred to the display control unit 115. The display control unit 115 displays the passed server error screen E202 on the display unit 140 (S115).

  While the terminal error screen E201 or the server error screen E202 is displayed, the user operation analysis unit 117 waits for the user to press the enter button (S116). When the determination button is pressed by the user (S116: Yes), the user operation analysis unit 117 notifies the event processing unit 111 of the occurrence of the operation. Upon receiving this operation information notification, the event processing unit 111 instructs the display control unit 115 to display the top screen I101 again. The display control unit 115 displays the top screen I101 again on the display unit 140 (S104).

  Next, the error analysis S107 described above will be described in more detail with reference to FIG.

  FIG. 17 is a flowchart showing the flow of processing executed in error analysis S107. FIG. 17 shows a process suitable particularly when an error code EC is sent from the relay server device 200 when a server error occurs.

  When receiving data from the relay server 200 as a response to the title screen content request R102, the data management unit 112 verifies whether the received data is normal data (S201). Specifically, when the acquisition of the title screen content C102 is realized by HTTP, the data management unit 112 compares the value of the Content-Length field included in the HTTP header with the body length of the received data, It is verified whether or not the acquired data is normal data with no omissions. Thereby, the data management unit 112 can detect a failure that has occurred in the communication path from the relay server 200 to the content reproduction apparatus 100.

  If there is an abnormality in the data acquired from the relay server 200 as a response to the title screen content request R102, the data management unit 112 determines that an error has occurred in the reception process (S201: Yes). In this case, the data management unit 112 sets the parameter file error.error stored in the storage unit 130 as a part of the top screen content C101. An error code 500 is written in txt (S202).

  When the data acquired from the relay server 200 in response to the title screen content request R102 is normal data (S201: No), the data management unit 112 determines whether the acquired data is an error code ( S203). The determination may be realized by an arbitrary method such as a method of pattern matching with a predetermined error code pattern. Accordingly, the data management unit 112 can detect a server error that has occurred in the relay server 200.

  When the data acquired from the relay server 200 is an error code (S203: Yes), that is, when it is detected that a server error has occurred in the relay server 200, the data management unit 112 sets the parameter file error. The error code 400 is written in txt (S204).

  When the data acquired from the relay server 200 is not an error code (S203: No), the content management unit 112 performs content analysis on the further data (S205). Specifically, in content analysis S205, it is determined whether or not the acquired data is content data having a predetermined data structure (see FIG. 6), and the acquired data has content data having a predetermined data structure. If it is, syntax analysis for the content data (specifically, XML syntax analysis for the state transition definition information and display control information included in the content data) is performed.

  When it is determined that the acquired data is not content data having a predetermined data structure as a result of the content analysis S205, or when a syntax error is found in the content data as a result of the syntax analysis (S206: No), the data The management unit 112 uses the parameter file error. An error code 500 is written in txt (S202).

  On the other hand, as a result of the content analysis S205, when it is determined that the acquired data is content data having a predetermined data structure and does not include a syntax error (S206: No), the parameter file error. The error code 200 is written in txt (S207). Also, a data acquisition success notification is sent to the event processing unit 111, and the content data successfully acquired is stored in the storage unit 130.

  FIG. 18 is a flowchart showing a modification of the error analysis process shown in FIG. FIG. 18 shows a process suitable particularly when an error content 200 is sent from the relay server device 200 when a server error occurs.

  The difference between the flowchart shown in FIG. 18 and that shown in FIG. 17 is that step S203 for determining whether or not the acquired data is an error code EC is omitted, and the data acquired by the content analysis S205 is normal. After it is determined that the content data is correct (S206: Yes), step S210 for determining whether the content data is the error content C200 is added. If the acquired content data is the error content C200 (S210: Yes), the data management unit 112 sets the parameter file error. An error code 300 is written in txt (S211).

  FIG. 19 is a flowchart showing another modification of the error analysis process shown in FIG. In FIG. 19, in particular, it is not determined in advance which of the error code EC and the error content 200 is sent from the relay server device 200 when a server error occurs (both may be sent). The process suitable for the case is shown.

  The difference between the flowchart shown in FIG. 19 and that shown in FIG. 17 is that after it is determined that the data acquired by the content analysis S205 is normal content data (S206: Yes), the content data is an error. Step S210 for determining whether or not the content is C200 is added. If the acquired content data is the error content C200 (S210: Yes), the data management unit 112 sets the parameter file error. An error code 300 is written in txt (S211).

(Relay server processing)
Next, processing on the relay server 200 side will be described with reference to FIG.

  FIG. 20 is a flowchart showing a flow of processing executed in the relay server 200. FIG. 20 particularly shows processing suitable for a configuration in which an error code EC is transmitted to the content reproduction apparatus 100 when a server error occurs.

  The relay server 200 waits for a top screen content request R101 to be sent from the content reproduction apparatus 100 (T101). When the top screen content request R101 is received, the composition data D101 necessary for compositing the top screen content C101 is acquired from the network album DB 300 (T102), and the top screen content C101 is composed from the acquired composition data D101. (T103). When the composition of the top screen content C101 is completed, the relay server 200 transmits the top screen content C101 to the content reproduction device 100 (T104).

  Next, the relay server 200 waits for a title screen content request R102 to be sent from the content reproduction apparatus 100 (T105). When the title screen content request R102 is received, the relay server 200 requests the network album DB 300 for composition data D102 necessary for composing the title screen content C102 (T106). When acquisition of the composition data D102 from the network album DB 300 is successful (T107: Yes), the relay server 200 starts composition of the title screen content C102 (T108). If the composition of the title screen content C102 is successful (T109: Yes), the title screen content C102 is transmitted to the content reproduction device 100 (T110). Thereafter, the relay server 200 executes processing T111 in which slide contents are generated and transmitted in order in response to a request from the content reproduction apparatus 100.

  On the other hand, when the acquisition of the composition data D102 from the network album DB 300 has failed (T107: No), or when the composition of the title screen content has failed (T109: No), the relay server device 200 displays the title screen content C102. Is transmitted to the content playback apparatus 100 (T112).

  When it is determined in step T107 that acquisition of the composition data D102 has failed, (1) when the network album DB 300 is down or the function is stopped, (2) the relay server 200 and the network album When a communication error with the DB 300 occurs, based on (3) an internal processing error of the relay server 200 and (4) an incorrect title screen content request R102 from the content reproduction device 100, the relay server 200 determines that the network album DB 300 When an illegal data request is made to

  In the case of a configuration in which error content C200 is provided to the content reproduction apparatus 100 when a server error occurs, in the flowchart shown in FIG. 20, the process T112 for transmitting the error code EC is replaced with the process T112 ′ for transmitting the error content. Change to

  In addition, when the error content C200 provided to the content reproduction apparatus 100 is combined in the relay server 200 when a server error occurs, the composition of the error content C200 may fail. For this reason, when the composition of the error content C200 is successful, the error content C200 is transmitted to the content reproduction apparatus 100, and when the composition of the error content C200 fails, the error code EC is transmitted to the content reproduction apparatus 100. Thus, it is preferable to configure the relay server device 200.

  FIG. 21 is a flowchart showing details of the process T112 ′ for transmitting the error content C200 when the relay server 200 is configured as described above.

  When the relay server 200 fails to acquire the composition data for synthesizing the title screen content C102 (T107: No), or when the composition of the title screen content C102 fails (T109: No), the error content C200. Are synthesized (T201). If the composition of the error content C200 is successful (S202: Yes), the error content C200 is transmitted to the content reproduction apparatus 100 (S203), and if it fails, the error code EC is transmitted (S204).

  Note that the relay server 200 may read the composition data from the storage unit in its own device and compose the error content C200, or obtain the composition data from the network album DB 300 and obtain the error content C200. May be synthesized. In the latter case, the error code EC may be transmitted to the content reproduction apparatus even when acquisition of data for synthesis for synthesizing the error content C200 fails.

(Error handling other than during communication)
In the above, the processing for dealing with a communication error that has occurred in the communication process for acquiring the top screen content C101 that is the content data has been described. It is possible to effectively cope with the data structure of C101.

  For example, the content playback device 100 can be configured to display a playback error screen that informs the user that a playback error has occurred when an error occurs in the process of playing back the top screen I101. Errors that may occur in the process of reproducing the top screen I101 include a description error in the top screen display control information 1012, a processing error when executing the process specified in the top screen display control information 1012, and top screen display control. For example, incompatibility of image data referred to from the information 1012, processing error in image data rendering processing, or image data rendering processing, and the like can be given.

  Hereinafter, processing when a playback error occurs in content playback processing for generating and displaying a display screen based on display control information for main content will be briefly described.

  FIG. 22 is a diagram illustrating an example of state transition definition information in which processing for dealing with occurrence of a reproduction error is specified.

  1901 is test. This is a command for instructing to generate and display a display screen based on display control information stored in svg. Based on this command, the display screen generation unit 113 performs test. A display screen is generated based on the display control information stored in svg and displayed on the display control unit 115. The display screen generation unit 113 returns an error code 200 to the event processing unit 111 when the display screen is successfully generated. In addition, the display screen generation unit 113 performs test. If an error occurs in the process of executing each command included in svg, an error code is returned to the event processing unit 111. Specifically, when the image data referred to from the display control information is image data that cannot be expanded by the image data expansion unit 114, an error code 400 indicating a format error is returned to the event processing unit 111. When a size error is detected, an error code 300 is returned to the event processing unit 111. The event processing unit 111 assigns the returned error code to the parameter file error. Store in txt.

  1902 is a parameter file error. This is a command for branching the processing based on the error code stored in txt. Specifically, when the error code is 200, the process is transferred to a command whose id is success, when the error code is 300, the process is transferred to a command whose id is sizer, and the error code is 400. At this time, it is specified that the process is transferred to a command whose id is “formatter”.

  A command group 1903 specifies processing to be executed for each error code. The first command whose id is success is a command executed when the error code is 200, and the success. A process for generating and displaying a display screen based on display control information stored in svg is specified. The second command whose id is “sizeror” is a command executed when the error code is “300”. A process for generating and displaying a display screen based on display control information stored in svg is specified. The third command whose id is “formatter” is a command that is executed when the error code is “400”. A process for generating and displaying a display screen based on display control information stored in svg is specified.

By embedding the state transition definition information as described above in the content data, various errors other than communication errors can be dealt with by the same method as for communication errors.
(About the screen that transitions after the error screen is displayed)
In the above description, the error screen generated by the error screen display control information included in the top screen content C101 that is the content data is displayed, and then the display screen is changed to the top screen I101. However, the error screen is displayed. After that, the transition screen is not limited to the top screen I101, but can be arbitrarily specified in the content data. Here, slide content reproduction using this feature of content data will be briefly described with reference to FIGS.

  FIG. 23A is a sequence diagram showing the flow of slide content playback executed in the content playback system 1 when a terminal error occurs.

  The description starts from a state in which the content reproduction apparatus 100 is reproducing the (i-1) th slide content Ci-1. At this time, the content reproduction apparatus 100 displays the slide i-1 as the main content of the slide content Ci-1. The state transition definition information of the slide content Ci-1 includes a command for instructing the relay server 200 to send a slide content request Ri for requesting the next slide content Ci. In accordance with this, the content reproduction apparatus 100 sends a slide content request Ri to the relay server 200. The relay server 200 acquires the composition data Di from the network album DB, synthesizes the slide content Ci, and sends it to the content reproduction apparatus 100.

  After acquiring the slide content Ci, the content reproduction device 100, when a predetermined slide display time has elapsed since the start of the display of the slide i-1, or when a next image display instruction from the user is received, The state transition definition information is read from the slide content Ci, and processing based on the state transition definition information of the slide content Ci is started.

  The state transition definition information of the slide content Ci includes a command that instructs to generate and display the slide i that is the main content based on the display control information included in the slide content Ci. In accordance with this, the content reproduction apparatus 100 reads the display control information of the slide content Ci, and generates and displays the slide i based on the read control information.

  The state transition definition information of the slide content Ci includes a command for instructing the relay server 200 to send a slide content request Ri + 1 requesting the next slide content Ci + 1. In accordance with this, the content reproduction apparatus 100 sends a slide content request Ri + 1 to the relay server 200. The relay server 200 acquires the composition data Di + 1 from the network album DB, synthesizes the slide content Ci + 1, and sends it to the content reproduction apparatus 100.

  In FIG. 23A, it is assumed that a terminal error has occurred after the slide content Ci + 1 is sent from the relay server 200. The content reproduction apparatus 100 determines that a terminal error has occurred when the acquisition of the slide content Ci + 1 is not completed even after a predetermined time has elapsed since the slide content request Ri + 1 was transmitted. When such a terminal error occurs, the content reproduction apparatus 100 cannot display the next slide i + 1 even when the timing for displaying the next slide i + 1 comes.

  The state transition definition information of the slide content Ci is instructed to generate and display a terminal error screen E301 (see FIG. 23B) that is a sub-content of the slide content Ci when a terminal error is detected. Yes. In accordance with this, the content reproduction apparatus 100 reads the terminal error screen display control information from the slide content Ci, and generates and displays the terminal error screen E301 based on the read terminal error screen display control information. The timing for generating and displaying the terminal error screen E301 may be the time when the terminal error occurs or the time when the display of the slide i + 1 to be displayed next to the slide i currently being displayed should be started. It may be. FIG. 23A shows the latter case, but the present invention is not limited to this.

  The state transition definition information of the slide content Ci is instructed to display the thumbnail list display screen I301 when the user presses the enter button while the terminal error screen E301 is displayed.

  FIG. 23B is a screen configuration diagram illustrating the configuration of the thumbnail list display screen I301 displayed on the content reproduction apparatus 100 at this time. As can be seen from FIG. 23 (b), the thumbnail list display screen I301 displays a list of thumbnail groups obtained by reducing images included in the currently viewed album, arranged in a matrix. The user can select a desired image from the thumbnail list display screen I301.

  Here, the screen that transitions from the terminal error screen E301 is set to the thumbnail list display screen I301 in particular. If the error that has occurred is a terminal error, the relay server 200 is operating normally, so the slide content again. This is because, if Ci is requested, there is a high possibility that it can be acquired next time.

  FIG. 24A is a sequence diagram showing the flow of slide content playback executed in the content playback system 1 when a terminal error occurs.

  It should be noted in FIG. 24 that the relay server 200 has failed to acquire the composition data Di + 1 from the network album DB, and an error on the server side that the slide content Ci + 1 cannot be synthesized has occurred. When a server error occurs in this way, the relay server 200 returns an error code EC to the content reproduction apparatus 100 as a response to the content request R1 + i. When acquiring the error code EC, the content reproduction apparatus 100 determines that a server error has occurred.

  In the state transition definition information of the slide content Ci, when it is determined that a server error has occurred, an instruction is given to generate and display a server error screen E302 (see FIG. 24B) that is a sub-content of the slide content Ci. Has been. In accordance with this, the content reproduction apparatus 100 reads the server error screen display control information from the slide content Ci, and generates and displays the server error screen E302 based on the read server error screen display control information. The server error screen E302 may be generated and displayed at the time when the error code is detected or when the display of the slide i + 1 to be displayed after the currently displayed slide i should be started. Also good. FIG. 24A shows the latter case, but the present invention is not limited to this.

  The state transition definition information of the slide content Ci includes a command for instructing to display the top screen I101 when the user presses the enter button while the server error screen E302 is displayed.

  Here, the screen that transitions from the server error screen E302 is set to the top screen I101 in particular. If the error that has occurred is a server error, it is unlikely that the slide content Ci can be acquired even if it is requested again. This is because it is preferable for the user to reselect the album to be browsed.

  FIG. 25 is a diagram illustrating state transition definition information for realizing the above slide content reproduction. FIG. 25 shows state transition definition information included in the first slide content.

  2201 is a command for instructing the relay server 200 to send a slide content request for requesting the second slide content as the next slide content. 2201 is a command for branching the process according to the type of communication error that has occurred, and is configured in the same manner as 1101c shown in FIG. 2203 is a command for instructing to generate and display a server error screen that is a sub-content of the first slide content when a server error is detected. At the same time, the top screen is designated as a display screen that transitions from the server error screen. Reference numeral 2204 denotes a command for instructing to generate and display a terminal error screen that is a sub-content of the first slide content when a terminal error is detected. At the same time, a thumbnail list display screen is designated as a display screen for transition from the server error screen.

  FIG. 26 is a flowchart showing the flow of the slide content reproduction process as described above. Note that the slide content reproduction S111 shown in FIG. 16 can be realized as the processing shown in this flowchart.

  At the start of slide content playback, variable i is initialized to 1. This variable i is a variable indicating which slide content is currently being processed, and the following processing is repeated until the variable i reaches the number n of slide contents to be reproduced.

  In the process for the i-th slide content, first, the data management unit 112 sends a content request Ri for requesting the slide content Ci to the relay server 200 (S302). And error analysis S303 which detects the error which generate | occur | produces in the communication process for acquiring the slide content Ci is performed.

  The processing executed in the error analysis S303 is realized in exactly the same way as the error analysis processing S107 shown in FIG. 17, as shown in FIG.

  If it is determined by the error analysis S303 that the slide content Ci has been successfully acquired, the error code 200 is displayed in the parameter file error. stored in txt. If it is determined that the slide content Ci cannot be acquired due to a server error, an error code 400 is displayed in the parameter file error. stored in txt. If it is determined that the slide content Ci cannot be acquired due to a terminal error, an error code 400 is displayed in the parameter file error. stored in txt. The event processing unit 111 includes a parameter file error. The subsequent processing is determined with reference to txt (S304).

  Parameter file error. When the error code 200 is stored in txt, that is, when the slide content Ci is normally acquired, the event processing unit 111 reads the state transition definition information of the slide content Ci from the storage unit 130. The event processing unit 111 requests the display screen generation unit 113 to generate the slide i based on the state transition definition information of the slide content Ci. The display screen generation unit 113 reads the display control information of the slide content Ci from the storage unit 130, and generates the slide i based on this (S305). The generated slide i is transferred to the display control unit 115. The display control unit 115 displays the passed slide i on the display unit 140 (S306). As described above, when the slide i can be normally displayed on the display unit 140, the variable i is incremented by 1 (S307). If the slide content Ci is the last slide content (S308: Yes), the process ends. Otherwise (S308: No), processing for the next slide content Ci + 1 is started.

  Parameter file error. If the error code 500 is stored in txt, that is, if the slide content Ci cannot be acquired normally due to a terminal error, the event processing unit 111 selects the slide screen content Ci-1 (title screen content if i = 1). The display screen generation unit 113 is requested to generate the terminal error screen E301 based on the state transition definition information of C102). The display screen generation unit 113 reads the terminal error screen display control information of the slide content Ci-1 from the storage unit 130, and generates a terminal error screen E301 based on the terminal error screen display control information (S309). The generated terminal error screen E301 is transferred to the display control unit 115. The display control unit 115 displays the passed terminal error screen on the display unit 140 (S310).

  While the terminal error screen E301 is displayed, the user operation analysis unit 117 waits for the user to press the enter button (S311). When the determination button is pressed by the user (S311: Yes), the user operation analysis unit 117 notifies the event processing unit 111 of the occurrence of the operation. Upon receiving this operation information notification, the event processing unit 111 reads state transition definition information of the thumbnail list display screen content for generating the thumbnail list display screen I301. Then, according to the state transition definition information, the event processing unit 111 instructs the display control unit 115 to display the thumbnail list display screen I301. The display control unit 115 reads the display control information from the thumbnail list display screen content, and generates a thumbnail list display screen I301 based on the display control information (S312). The display control unit 115 displays the thumbnail list display screen I301 on the display unit 140 (S313).

  While the thumbnail list display screen I301 is displayed, the user operation analysis unit 117 waits for a user to select a desired slide (S314). When a desired slide is selected by the user, the variable i is set to the number of the selected slide (S315), and the process returns to step S302.

  Parameter file error. When the error code 400 is stored in txt, that is, when the slide content Ci cannot be acquired normally due to a server error, the event processing unit 111 selects the slide screen content Ci-1 (title screen content when i = 1). Based on the state transition definition information of C102), the display screen generation unit 113 is requested to generate the server error screen E302. The display screen generation unit 113 reads the server error screen display control information of the slide content Ci-1 from the storage unit 130, and generates a server error screen E302 based on the server error screen display control information (S316). The generated server error screen E302 is transferred to the display control unit 115. The display control unit 115 displays the passed server error screen E302 on the display unit 140 (S317).

While the server error screen E302 is displayed, the user operation analysis unit 117 waits for the user to press the enter button (S318). If the determination button is pressed by the user (S311: Yes), the process proceeds to step S103 shown in FIG. 16, and the top screen content I101 is displayed.
(Use of display control information stored in other content data)
Note that the content reproduction apparatus 100 described above has an event processing unit 111 (error error) that detects an error that occurs in the process of executing the process specified by the process specification information (state transition definition information) included in the reproduction target content data. And a display screen generating unit 113 for reproducing the error screen display control information (sub-content) included in the reproduction target content data when the event processing unit 111 (error detecting unit) detects an error. Sub-content reproduction means). However, when an error is detected, the error screen display control information (sub-contents) included in other content data stored in the content playback apparatus 100 may be played back, not limited to the playback target content.

  This will be described in more detail below with reference to FIG.

  FIG. 28 is an explanatory diagram for explaining variations of content data that can be a transition destination of reproduction target content data when an error is detected.

  In the four examples shown in FIG. 28, the content reproduction apparatus 100 acquires parameter content PP1, first content data TP1, second content data TP2, and third content data TP3 in order from the relay server 200. The acquired content data TP1 to TP3 are reproduced in order. The parameter content PP1 is content data that stores parameters referred to by the content reproduction device during reproduction of the content data TP1 to TP3.

  In the example shown in FIG. 28A, error content is stored in advance in the parameter content PP1. In the state transition definition information of the content data TP2, the error content of the parameter content content is specified as the content to be transitioned when an error is detected. For this reason, when the content reproduction apparatus 100 detects an error during the execution of the process specified in the state transition definition information, the content reproduction apparatus 100 reproduces the error content included in the parameter content.

  In the example shown in FIG. 28B, error content is stored in the content data TP1, which is content data stored in the storage unit 130 as reproduced content data. In the state transition definition information of the content data TP2, the error content of the content data TP1 is specified as the content to be transitioned when an error is detected. When the content reproduction apparatus 100 detects an error during execution of the process specified in the state transition definition information, the content reproduction apparatus 100 reproduces the error content included in the content data TP1 based on the state transition definition information.

  In the example shown in FIG. 28C, error content is stored in content data TP0, which is content data stored in the storage unit 130. The content data TP0 is content that is acquired together with the parameter content PP immediately after activation, and continues to be held in the storage unit 130 until the reproduction of a series of content data ends. In the state transition definition information of the content data TP2, the error content of the content data TP0 is designated as the content to be transitioned when an error is detected. When the content reproduction apparatus 100 detects an error during execution of the process specified in the state transition definition information, the content reproduction apparatus 100 reproduces the error content included in the content data TP0 based on the state transition definition information.

  In the example shown in FIG. 28D, error content is stored in the content data TP3 that has not yet been acquired at the time when the content data TP1 (reproduction target content data in this example) is being reproduced. When the content reproduction apparatus 100 detects an error during the execution of the process specified in the state transition definition information, the content reproduction apparatus 100 acquires the content data TP3 based on the state transition definition information, and is included in the acquired content data TP3. Play error content.

  As described above, the error content that the content reproduction device 100 reproduces when an error is detected is not necessarily limited to that included in the reproduction target content data, but is specified by the state transition definition information of the reproduction target content data. The content data may be included in any content data.

  Next, the above will be described in more detail with reference to two specific configuration examples of the state transition definition information.

  FIG. 29 is a diagram showing an example of content transition that can be realized by the present invention.

  Acquisition of the content data TP3 is instructed in the state transition definition information of the content data TP2, and the image display apparatus 100 tries to acquire the content data TP3 during the reproduction of the content TP2c of the content data TP2. When the content data TP3 is successfully acquired, the content TP3c of the content data TP3 is reproduced. On the other hand, when a server error is detected, the error content TP1e (server error screen display control information) of the content data TP1 is reproduced, and when a terminal error is detected, the error content PP1e of the parameter content PP1 is reproduced. (Display control information for terminal error screen) is reproduced.

  FIG. 30 is a configuration example of state transition definition information for realizing the content transition example shown in FIG. The state transition definition information shown in FIG. 30 is described by MTD, similarly to that shown in FIG.

  The difference between the state transition definition information shown in FIG. 30 and that shown in FIG. 7 is only the difference in the transition destination of the execution target step defined for each error code in the transition destination determination step. In the line indicated by reference numeral 3001, when the error code is 200 (that is, when the content data TP3 can be acquired normally), it is specified that the execution target is moved to “tp3.mtd”. “Tp3.mtd” indicates state transition definition information of the content data TP3. Thereby, when the content data TP3 can be normally acquired, the content TP3c of the content data TP3 is reproduced.

  In the row indicated by reference numeral 3002, when the error code is 400 (that is, when a server error is detected), “tp1.mtd # servererror”, that is, servererror of the state transition definition information of the content data TP1. It is specified that the execution target is transferred to the step. Thereby, when a server error is detected during acquisition of the content data TP3, the error content TP1e of the content data TP1 is reproduced.

  Further, the line indicated by reference numeral 3003 indicates that when the error code is 500 (corresponding to the case where a terminal error occurs), “parameter.mtd # localerror”, that is, the localerror step of the state transition definition information of the parameter content PP1. It is specified to move the execution target. Thereby, when a terminal error is detected during acquisition of the content data TP3, the error content PP1e of the parameter content PP1 is reproduced.

  FIG. 31 is a flowchart showing the flow of processing from the start of the communication step to the completion of the transition destination determination step described above, of the processing executed based on the state transition definition information shown in FIG. Since each step in the communication step is the same as steps S201 to S207 shown in FIG. 17, the same reference numerals are given and description thereof is omitted. Further, in the transition destination determination step, the process S501 for determining the transition destination and the processes S502 to S504 for transitioning the execution target step according to the determination result of S501 are as described above.

  FIG. 32 is a diagram showing another example of content transition that can be realized by the present invention.

  Acquisition of the content data TP5 is instructed in the state transition definition information of the content data TP4, and the image display apparatus 100 tries to acquire the content data TP5 during the reproduction of the content TP4c of the content data TP4. Then, when acquisition of the content data TP5 is successful, the content TP5c of the content data TP5 is reproduced. On the other hand, when the server error is detected by the error code from the relay server 200, the error content TP4se (server error screen display control information (servererror4.svg)) of the content data TP4 itself is reproduced and the terminal error is detected. In this case, the error content TP4le (terminal error screen display control information (localerror4.svg)) of the content data TP4 itself is reproduced.

  On the other hand, in the example shown in FIG. 32, the content reproduction apparatus 100 can detect a server error by receiving error content instead of an error code from the relay server 200. When the error content is received, the received error content itself can be reproduced as shown in FIG. However, in the example shown in FIG. 32, the error content is used only for the purpose of error detection, and the error content PP1e (server error screen display control information) of the parameter content PP1 is reproduced as the error content to be reproduced. ing.

  FIG. 33 is a configuration example of state transition definition information for realizing the content transition example shown in FIG. Similar to the state transition definition information exemplified so far, a description example is also shown here by MTD.

  The difference between the state transition definition information shown in FIG. 33 and that shown in FIG. 30 is only the difference in the transition destination of the execution target step defined for each error code in the transition destination determination step.

  In the line indicated by reference numeral 4001, when the error code is 200 (that is, when the content data TP5 can be acquired normally), it is specified that the execution target is moved to “tp5.mtd”. “Tp5.mtd” indicates state transition definition information of the content data TP5. Thereby, when the content data TP5 can be normally acquired, the content TP5c of the content data TP5 is reproduced.

  In the line indicated by reference numeral 4002, when the error code is 300 (that is, when a server error is detected by error content from the relay server 200), “parameter.mtd # servererror”, that is, parameter It is specified that the execution target is transferred to the servererror step of the state transition definition information of the content PP1. Thereby, when a server error is detected by the error content during acquisition of the parameter content TP5, the error content PP1e of the parameter content PP1 is reproduced.

  In the line indicated by reference numeral 4003, when the error code is 400 (that is, when a server error is detected by the error code from the relay server 200), “#servererror”, that is, its own state transition definition It is specified to move the execution target to the servererror step of information. As can be seen from FIG. 33, the servererror step is instructed to reproduce the error content TP4se. Thereby, when the server error is detected by the error code, the error content TP4se of the content data TP4 itself is reproduced.

  The line indicated by reference numeral 4004 moves the execution target to “#localerror”, that is, the localerror step of its own state transition definition information when the error code is 500 (corresponding to the case where a terminal error occurs). Is specified. As can be seen from FIG. 33, the localerror step is instructed to reproduce the error content TP4le. Thereby, when a terminal error is detected, the error content TP4le of the content data TP4 itself is reproduced.

  FIG. 34 is a flowchart showing the flow of processing from the start of the communication step to the completion of the transition destination determination step described above, of the processing executed based on the state transition definition information shown in FIG. Since each process in the communication step is the same as the processes S201 to 210 shown in FIG. 19, the same reference numerals are given and description thereof is omitted. Moreover, in the transition destination determination step, the process S505 for determining the transition destination and the processes S506 to S509 for transitioning the execution target step according to the determination result of S505 are as described above.

  As described above, the error content to be reproduced when an error is detected is determined based on the state transition definition information of the reproduction target content data, and may be included in content data other than the reproduction target content data. . The content data containing the error content to be played back may be content data that has not been acquired at that time (see FIG. 28D).

  However, it goes without saying that reading error content from the content data stored in the storage unit 130 at the time when playback of the content to be played is started can quickly transition to error content when an error is detected. However, when the error content is read from the content data stored in the storage unit 130, there is a possibility that the target content data is already deleted from the storage unit 130 when an error occurs. This is because the content reproducing apparatus 100 realized as a television has a small capacity of the storage unit 130 and content data that is no longer necessary needs to be deleted.

  Therefore, finally, management of content data stored in the storage unit 130 will be briefly described.

  FIG. 35 is a diagram showing a content management table used for managing content data stored in the storage unit 130 in the content reproduction apparatus 100. As shown in the figure, the content management table defines a storage mode for content data for each content data. As the storage mode, at least static and normal are prepared.

  The data management unit 112 of the content reproduction apparatus 100 manages content data stored in the storage unit 130 based on the content management table. Specifically, when the remaining storage capacity of the storage unit 130 falls below a predetermined value, the content data whose storage mode is normal is deleted, and the free capacity is maintained at the predetermined value. When the content data is deleted, the content name and the storage mode corresponding to the content data are also deleted from the content management table. Thereby, it is possible to confirm the existing content data and the storage mode of the content data only by referring to the content management table.

  As can be seen from the contents of the content management table shown in FIG. 35, the parameter content PP1 (content name parameter) is stored as static, and thus is not deleted from the storage unit 130. Therefore, if the error content is stored in the parameter content PP1 and the error content in the parameter content PP1 is referred to from each content, the error content can be reliably displayed.

  On the other hand, the content data TP1 (content name tp1), the content data TP2 (content name tp2), and the content data TP3 (content name tp3) are deleted at that time if the storage unit 130 has insufficient free space. Therefore, when referring to content data stored in such a normal mode, an existence confirmation step for confirming whether the content data exists in the storage unit 130 before reference, and the existence could not be confirmed. In this case, a transition destination determination step for switching the reference destination to the parameter content PP may be executed. The former existence confirmation step is realized by the data management unit 112.

  FIG. 36 (a) is a part of the state transition definition information included in the content data TP2, and is a state in which the content data existence confirmation step is incorporated in the transition destination determination step for determining the transition destination at the time of error detection. It is an example of transition definition information.

  The line indicated by reference numeral 5001 specifies that when a server error is detected (corresponding to the error code 400), the presence / absence check of the content data TP1 defined at the location indicated by reference numeral 5002 is executed.

  A portion indicated by reference numeral 5002 instructs execution of presence / absence confirmation of the content data TP1. Specifically, the data management unit 112 determines whether or not the content data TP1 is still stored in the storage unit 130 based on the content management table described above.

  If the content data TP1 is not deleted, the part indicated by reference numeral 5003 moves the processing target to the server error handling step (servererror) of the content data TP1, and if it has been deleted, deletes the error content of the parameter content PP1. It is specified that the processing is moved to the handling step (deleteerror) step.

  FIG. 36B shows a portion corresponding to the server error handling step in the state transition definition information of the content data TP1. Here, it is designated to reproduce the error content included in the content data TP1 itself.

  On the other hand, FIG. 36C shows a portion corresponding to the deletion handling step in the state transition definition information of the parameter content PP1. Here, it is instructed to display an error screen as shown in FIG. The error screen displayed here is a display screen for notifying the user that the processing cannot be continued because necessary content data has been deleted.

(Additional notes)
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 included in the control unit 110 of the content reproduction apparatus 100 may be configured by hardware logic, or may be realized by software using a CPU as follows.

  That is, the content reproduction apparatus 100 includes a CPU (central processing unit) that executes instructions of an image display program that implements each function, a ROM (read only memory) that stores the program, and a RAM (random access memory) that expands the program. ), A storage device (recording medium) such as a memory for storing the program and various data. An object of the present invention is a recording medium in which the program code (execution format program, intermediate code program, source program) of the image display program of the content reproduction apparatus 100, which is software that implements the above-described functions, is recorded so as to be readable by a computer This can also be achieved by supplying the above to the content reproduction apparatus 100 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. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  Further, the content reproduction apparatus 100 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. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Also, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  Also, each block included in the control unit 230 of the relay server device 200 may be configured by hardware logic, or may be realized by software using a CPU, as described above for the content reproduction device 100. Good.

  The present invention can be applied to a content reproduction apparatus that reproduces content acquired from the outside, and is particularly suitably used for a content reproduction apparatus that performs slide show reproduction that sequentially acquires and reproduces a plurality of contents from the outside. be able to.

1, showing an embodiment of the present invention, is a block diagram showing a configuration of a content reproduction system 1. FIG. FIG. 7 is an explanatory diagram illustrating an outline of the operation of the content reproduction system in the case where the embodiment of the present invention is performed and the operation is performed without error. 2A is a block diagram showing the configuration of the content playback system, FIG. 2B is a screen configuration diagram showing the screen configuration of the top screen, and FIG. 2C is a screen configuration of the title screen. FIG. FIG. 9 is an explanatory diagram illustrating an operation outline of a content reproduction system when a terminal error occurs according to an embodiment of the present invention. FIG. 2A is a block diagram showing the configuration of the content reproduction system, and FIG. 2B is a screen configuration diagram showing the screen configuration of the terminal error screen. FIG. 4 is an explanatory diagram illustrating an operation outline of a content reproduction system when a server error occurs according to an embodiment of the present invention. FIG. 3A is a block diagram showing a configuration of the content reproduction system, and FIG. 3B is a screen configuration diagram showing a screen configuration of a server error screen. FIG. 5 is an explanatory diagram illustrating an operation outline of a content reproduction system that is a modification of the content reproduction system illustrated in FIG. 4 according to the embodiment of this invention. FIG. 5A is a block diagram showing a configuration of the content reproduction system, and FIG. 5B is a screen configuration diagram showing a screen configuration of a server error screen. FIG. 3 is a data structure diagram illustrating a data structure of content data according to an embodiment of the present invention. FIG. 7 is a diagram illustrating an example of state transition definition information included in the content data of FIG. 6 according to the embodiment of this invention. FIG. 7A shows state transition definition information suitable when an error code is sent from the relay server, and FIG. 7B shows a state transition definition when error content is sent from the relay server. FIG. 7C shows state transition definition information when both the error code and the error content are sent from the relay server. FIG. 7 is a diagram illustrating an example of display control information included in the content data in FIG. 6 according to the embodiment of the present invention. 1, showing an embodiment of the present invention, is a block diagram showing a schematic configuration of a content reproduction apparatus. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is an overview diagram showing an overview when a content reproduction apparatus is realized as a television receiver. 1, showing an embodiment of the present invention, is a block diagram illustrating a main configuration of a control unit of a content reproduction apparatus. FIG. 7 is a sequence diagram illustrating an embodiment of the present invention and showing a flow of processing of the content reproduction system when operating without error. FIG. 4 is a sequence diagram illustrating an embodiment of the present invention and showing a flow of processing of a content reproduction system when a terminal error occurs. FIG. 4 is a sequence diagram illustrating an embodiment of the present invention and showing a flow of processing of a content reproduction system when a server error occurs. FIG. 15 is a sequence diagram illustrating an embodiment of the present invention and illustrating a modification of the processing of the content reproduction system illustrated in FIG. 14. 5 is a flowchart illustrating processing of the content reproduction device according to the embodiment of the present invention. 5 is a flowchart illustrating an error analysis process among the processes of the content reproduction apparatus according to the embodiment of the present invention. In particular, an error analysis process suitable when an error code is sent from a relay server is shown. It is a flowchart which shows embodiment of this invention and shows another error analysis process. In particular, an error analysis process suitable when error content is sent from a relay server is shown. It is a flowchart which shows embodiment of this invention and shows another error analysis process. In particular, an error analysis process suitable for a case where both an error code and error content are sent from the relay server is shown. It is a flowchart which shows embodiment of this invention and shows the process of a relay server. In particular, a process suitable for transmitting an error code to the content reproduction apparatus will be described. FIG. 9 is a flowchart illustrating an embodiment of the present invention, which is processing in a case where error content is transmitted to a content reproduction device among processing of a relay server. It is a figure which shows embodiment of this invention and shows the other example of the state transition definition information contained in content data. FIG. 11 is a sequence diagram illustrating an embodiment of the present invention and showing slide content reproduction processing of the content reproduction system when a terminal error occurs. FIG. 7 is a sequence diagram illustrating an embodiment of the present invention and showing slide content reproduction processing of the content reproduction system when a server error occurs. It is a figure which shows embodiment of this invention and shows the other example of the state transition definition information contained in content data. 4 is a flowchart illustrating an embodiment of the present invention and showing slide content reproduction processing of the content reproduction apparatus. 7 is a flowchart illustrating an error analysis process in the slide content reproduction process of the content reproduction apparatus according to the embodiment of the present invention. FIG. 9 is a diagram illustrating an embodiment of the present invention and is a diagram for explaining variations of content data that can be a transition destination of reproduction target content data when an error is detected. FIG. 4 is a diagram illustrating an example of content transition that can be realized according to the exemplary embodiment of the present invention. FIG. 30 illustrates an embodiment of the present invention and is a diagram illustrating a specific configuration example of state transition definition information that realizes the content transition example illustrated in FIG. 29. FIG. 32 is a flowchart illustrating an embodiment of the present invention and illustrating a flow of processing executed based on the state transition definition information illustrated in FIG. 30. It is a figure which shows embodiment of this invention and shows the transition example of the other realizable content. FIG. 33 is a diagram illustrating an embodiment of the present invention and a specific configuration example of state transition definition information for realizing the content transition example illustrated in FIG. 32. FIG. 34 is a flowchart showing an embodiment of the present invention and showing the flow of processing executed based on the state transition definition information shown in FIG. 33. FIG. 3 is a diagram illustrating a content management table used for managing content data stored in a storage unit in a content reproduction apparatus according to an embodiment of the present invention. FIG. 36A shows an embodiment of the present invention, and FIG. 36A is a diagram showing a configuration example of state transition definition information of content to be played back. FIG. 36B is a diagram illustrating a configuration example of a part that handles a server error in the state transition definition information of content data that may be deleted. FIG. 36C is a diagram illustrating a configuration example of a part to be handled when content data to be referred to is deleted from the state transition definition information of the parameter content. It is a structural example of a display screen displayed when content data including error content cannot be used due to deletion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Content reproduction system 100 Content reproduction apparatus 110 Control part 120 Communication part 130 Storage part 140 Display part 150 IR receiving part 160 Remote controller 111 Event processing part (error detection means)
112 Data management unit (content data acquisition means, error detection means)
113 Display screen generation unit (main content reproduction means, sub-content reproduction means,
Alternative content playback means, content playback means,
Error content playback means)
114 Image data development unit 115 Display control unit 116 Timer unit 117 User operation analysis unit

Claims (22)

Main content playback means for playing back the main content included in the content data to be played back;
Error specifying means for detecting an error occurring in the process of executing the process specified by the process specifying information included in the reproduction target content data, which is information specifying the process to be executed in the own device;
Sub-contents reproducing means for reproducing sub-contents included in the reproduction target content data when the error detecting means detects an error;
A content reproduction apparatus comprising: The above processing specification information
Including acquisition process designation information for designating a process of acquiring acquisition target content data including the next content to be reproduced next to the main content from an external device,
The content playback device
Based on the acquisition processing designation information, further comprising content data acquisition means for acquiring the acquisition target content data from the external device,
The error processing detection means is
The content data acquisition means detects an error that has occurred during the process of acquiring the acquisition target content data.
The content reproduction apparatus according to claim 1, wherein: The error detection means is
In the process in which the content data acquisition means executes the process of acquiring the acquisition target content data, an error that occurs on the own device side is detected.
The content reproduction apparatus according to claim 2, wherein: The error detection means is
It is error information provided from the external device, and based on error information indicating that the content data to be acquired cannot be transmitted, an error occurring in the external device is detected.
The content reproduction apparatus according to claim 2, wherein: The above processing specification information
Including reproduction processing designation information for designating the processing for reproducing the main content,
The error detection means is
The main content playback means detects an error that has occurred during the process of playing back the main content based on the playback processing designation information;
The content reproduction apparatus according to claim 1, wherein: The above processing specification information
Including sub-content designation information for designating sub-content to be reproduced for each type of error that can be detected by the error detection means,
The subsidiary content playback means is:
Of the plurality of sub-contents included in the reproduction target content data, the sub-content corresponding to the type of error detected by the error detecting means is reproduced based on the sub-content designation information.
The content reproduction device according to claim 1, wherein the content reproduction device is a content reproduction device. The above processing specification information
It includes alternative content playback processing designation information that instructs processing to play back specific alternative content instead of the next content,
The content playback device
Substitute content reproduction means for reproducing the alternative content based on the alternative content reproduction processing designation information after the subcontent reproduction means reproduces the subcontent.
The content reproduction apparatus according to any one of claims 1 to 6, wherein Content reproducing means for reproducing the content included in the content data to be reproduced;
Error specifying means for detecting an error occurring in the process of executing the process specified by the process specifying information included in the reproduction target content data, which is information specifying the process to be executed in the own device;
When the error detecting means detects an error, the error content to be played back when the error is detected is specified, and the error content specified by the error content specifying information included in the playback target content data is played back. Error content playback means to
A content reproduction apparatus comprising: First content data providing means for providing the content reproduction device with first content data including main content to be reproduced by the content reproduction device;
Second content data providing means for providing the content reproduction device with second content data including the next content to be reproduced next to the main content by the content reproduction device;
The first content data is
Including sub-contents to be reproduced by the content reproduction device when the content reproduction device cannot reproduce the next content included in the second content data.
Content data providing apparatus characterized by the above. First content data providing means for providing first content data including content to be reproduced by the content reproduction device to the content reproduction device;
Second content data providing means for providing the content reproduction device with second content data including next content to be reproduced next to the content by the content reproduction device;
The first content data is
When the content reproduction apparatus cannot reproduce the next content included in the second content data, it includes error content designation information for designating the content reproduction apparatus as error content to be reproduced. ,
Content data providing apparatus characterized by the above. The content playback device according to any one of claims 1 to 7,
The content data providing device according to claim 9,
The content reproduction system characterized by including. A content reproduction device according to claim 8,
The content data providing device according to claim 10,
The content reproduction system characterized by including. A content playback method for causing a content playback device to play back content,
A main content playback step of playing back the main content included in the playback target content data;
An error detection step for detecting an error that occurred in the process of executing the process designated by the process designation information stored in the reproduction target content data, the information designating the process to be executed in the content reproduction apparatus ,
A sub-contents reproduction step of reproducing sub-contents included in the reproduction target content data when an error is detected in the error detection step;
The content reproduction method characterized by including. A content playback method for causing a content playback device to play back content,
A content playback process for playing back content included in the playback target content data;
An error detection step for detecting an error that occurs in the process of executing the process designated by the process designation information included in the reproduction target content data, the information designating a process to be executed in the content reproduction apparatus. ,
When an error is detected in the error detection step, the error content to be played back when the error is detected is specified, and the error content specified by the error content specifying information included in the playback target content data is Error content playback process to play,
A content reproduction method comprising: A content data providing method for providing content data to a content playback device,
A first content data providing step of providing the content reproduction device with first content data including main content to be reproduced by the content reproduction device;
A second content data providing step for providing the content reproduction device with second content data including next content to be reproduced next to the main content by the content reproduction device,
The first content data is
Including sub-contents to be reproduced by the content reproduction device when the content reproduction device cannot reproduce the next content included in the second content data.
Content data providing method characterized by the above. A content data providing method for providing content data to a content playback device,
Providing a first content data including content to be reproduced by the content reproduction device to the content reproduction device;
A second content data providing step for providing the content reproduction device with second content data including next content to be reproduced next to the main content by the content reproduction device,
The first content data is
When the content reproduction apparatus cannot reproduce the next content included in the second content data, it includes error content designation information for designating the content reproduction apparatus as error content to be reproduced. ,
Content data providing method characterized by the above. Main content played by the content playback device;
Process designation information for designating a process to be executed in the content reproduction apparatus;
Sub-contents to be played back by the content playback device when an error occurs in the process of executing the processing specified by the processing specification information;
A data structure of content data characterized by including Content played by the content playback device;
Process designation information for designating a process to be executed in the content reproduction apparatus;
Error content specification information for specifying an error content to be played when an error occurs in the process of executing the process specified by the process specification information;
A data structure of content data characterized by including A program for operating a computer as the content reproduction device according to any one of claims 1 to 8,
A content reproduction program for causing the computer to function as each means provided in the content reproduction apparatus.   A computer-readable recording medium on which the content reproduction program according to claim 19 is recorded. A program for operating a computer as the content data providing apparatus according to claim 9 or 10,
A content data providing program for causing the computer to function as each means provided in the content data providing apparatus.   A computer-readable recording medium in which the content data providing program according to claim 21 is recorded.

Images