JP2006260178A - Content reproduction device and content reproduction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To switch to and present content of overlapping photographing time during content reproduction. <P>SOLUTION: A content reproduction device 106 comprises a content storage part 107, a detection part 110, a reproduction control part 112, an input part 111 and an output control part 108. During content reproduction, through Step 901 of acquiring the photographing start time and end time of the reproduced content, Step 902 of searching the content storage part 107 for content to be checked for overlap, Step 903 of acquiring the photographing start time and end time of such content, Step 904 of checking for overlap and Step 905 of updating overlap information, overlapping content is detected and the detected content is notified to the user, who can switch the reproduced content. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to playback of content such as moving images, still images, and audio, and more particularly to a content playback device that plays back a plurality of content in cooperation.

Conventionally, as a method of playing multiple or multiple types of content, if there are multiple still images and multiple videos shot from the same scene, a list of multiple content (still images and videos) that are candidates for playback is displayed. Some of the lists start playback by selecting and specifying the content to be played back. As a method for displaying the list of contents, there is a method in which still images are displayed as thumbnails in a list using a still image as an index of a moving image (for example, see Patent Document 1).
JP 2002-158948 A

  However, in the conventional playback method, by displaying a list of playback candidate contents, it is possible to specify and play back content such as moving images and still images from the list, but at the same time during playback of one content There is a problem that the user does not know that there is related content such as that taken in the video and cannot easily switch to the related content during reproduction.

  The present invention solves the above-mentioned conventional problem, and detects the presence or absence of content shot at the same time as related content from a plurality of content during playback of the content, and sends the result to the user. It is an object of the present invention to provide a content reproduction apparatus and a content reproduction method for notifying and easily switching display of content reproduction.

  In order to solve the above-described conventional problems, a content reproduction apparatus according to the present invention is a content reproduction apparatus that reproduces and outputs content, and includes a content accumulation unit that accumulates one or more contents to be reproduced, and the content accumulation unit. Content playback control means for playing back the stored content, and detection means for detecting content related to the content being played back by the content playback control means from the content stored in the content storage means; Output control means for outputting a detection result obtained by the detection means.

  In the content reproduction apparatus of the present invention, the reproduction control means switches the content to be reproduced to the related content detected by the detection means.

  With this configuration, during content playback, it is possible to notify that there is content such as a moving image, a still image, or audio that was shot at the same time as the content being played back, and the content being played back can be easily switched.

  According to the content playback method of the present invention, during playback of content, it is notified that there is content such as a moving image, still image, or audio shot at the same time as the content being played back, and the content being played back can be easily Can be switched.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a system including a content reproduction apparatus according to an embodiment of the present invention.

  In FIG. 1, a digital camera 101 and a digital video camera 103 are devices for capturing content, and each have a function of capturing content such as a still image, a moving image, and audio. The content playback device 106 is a device for playing back content. The digital camera 101 or the digital video camera 103 that is a photographing device is connected to the content reproduction device 106 by an existing connection means such as a USB cable, a 1394 cable, or the Internet, and transmits the photographed content to the content reproduction device 106. The content playback device 106 performs playback processing on the content received from the imaging device and outputs the content to the output device 113. The output device 113 receives the output from the content reproduction device 106 and reproduces and displays the content. The output device 113 is a device that includes a display such as a CRT or LCD that can display still images and moving images, and a speaker that can output sound such as music.

  Next, the internal configuration of the content reproduction device 106 will be described.

  The accumulation control unit 109 detects the connection of a USB cable, a 1394 cable, a serial cable, etc., receives the content sent from the connected imaging device (101, 103), and accumulates the content in the content accumulation unit 107. It has a function. Further, the content stored in the content storage unit 107 may be acquired not only by connection with a photographing apparatus via a cable but also via a medium on which the content is recorded. In this case, the accumulation control unit 109 has a function of reading content from the media.

  The content storage unit 107 has a function of storing and holding content to be played back. The content storage unit 107 may be configured to be built in the content playback device 106 such as a hard disk or a memory, or may be configured by a removable medium such as a DVD-RAM, DVD-R, or DVD-RW in which content is recorded. Also good.

  The input unit 111 has a function of receiving an input as to which content is to be reproduced from the user and notifying the reproduction control unit 112 and the detection unit 110.

  The playback control unit 112 acquires content specified by the user using the input unit 111 from the plurality of contents in the content storage unit 107, generates playback data, and transmits the playback data to the output control unit 108.

  The output control unit 108 reproduces and displays content by outputting the reproduction data received from the reproduction control unit 112 to the output device 113.

  The detection unit 110 has a function of detecting content captured from the content storage unit 107 at the same shooting time as the content being played back by the playback control unit 112. Further, the detection unit 110 has a function of notifying the reproduction control unit 112 of time information (duplication information) overlapping with an ID for identifying content as a result of detection.

  The reproduction control unit 112 has a function of outputting the duplication information acquired from the detection unit 110 to the output device 113 via the output control unit 108 and notifying the user. As an example of the output of the duplication information, duplication information is output to the output device 113 at the timing when the shooting time of the detected content overlaps with the shooting time of the currently reproduced content.

  Next, a mechanism for transferring content shot by the digital video camera 103 to the content storage unit 107 will be described with reference to FIGS. 2, 3, and 4. 2, 3, and 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. FIG. 2 is a diagram in which portions related to the transfer in FIG. 1 are extracted.

  As described above, the content storage unit 107 stores and holds the content to be played back. As shown in FIG. 2, one or more content data to be reproduced (MPEG content 201) and a content information table 202 for managing the content data are stored. Details of the content information table 202 will be described later with reference to FIG. The storage control unit 109 receives content data (digital video (DV) format) sent from the digital video camera 103, and the DV format analysis unit 203 performs processing into a format that can be stored in the content storage unit 107. And storage processing in the content storage unit 107 is performed. The processing of the DV format analysis unit 203 will be specifically described with reference to FIGS.

  FIG. 3 is a diagram showing how the contents of the DV tape inserted in the digital video camera 103 are repeatedly recorded and stopped. In the DV tape shown in FIG. 3, the total recordable length is 90 minutes. Content (1) in FIG. 3 indicates that recording started at 10:20 on July 25, 2004 from the beginning of the tape, and video for 25 minutes was taken until 10:45. Similarly, the content (2) is shot from 11:00 to 11:25 on July 25, 2004, and the content (3) is displayed from 10:25 on July 26, 2004. Images up to 10:45 have been taken. The content (4) indicates that images from 10:05 to 10:25 on April 10, 2000 are taken. Here, INDEX information indicating a scene change point is recorded at the beginning of the content (1) and the content (3). This INDEX information indicates scene switching and does not indicate video switching. In addition to the INDEX information, information indicating a content break is recorded on the DV tape when recording is started / stopped.

  FIG. 4 is a diagram showing an example of the content information table 202 and the MPEG content 201 recorded in the content storage unit 107. Assume that four content data (Mpeg2 content (1), Mpeg2 content (2), Mpeg2 content (3), and Mpeg2 content (4)) are stored as the MPEG content 201. The content information table 202 manages the association between the ID (file name) for identifying the content and the shooting date (shooting start time and shooting end time) for each piece of content data. In addition, when the content data is in the Mpeg2 format, the MPEG2 file has information indicating the length of the content. Therefore, it is not necessary to store the shooting end time by storing the shooting start time. Further, although the file name is used as the ID, if each content can be identified, the shooting start time of the content data, the storage address of the content data, and the like may be used. The Mpeg2 content (1) in FIG. 4 is the same video content, although the format is different from the content (1) in FIG. Similarly, the Mpeg2 content (2) in FIG. 4 is the content (2) in FIG. 3, the Mpeg2 content (3) in FIG. 4 is the content (3) in FIG. 3, and the Mpeg2 content (4) in FIG. The contents (4) are the same video contents.

  The connection method between the digital video camera 103 and the storage control unit 109 may be any of ETHERNET (registered trademark), 1394 cable, serial cable, and USB cable as long as the DV format can be transmitted. In this example, it is assumed that the digital video camera 103 supports transmission of content using a 1394 cable. After the digital video camera 103 and the storage control unit 109 are connected, content is transmitted from the digital video camera 103 to the storage control unit 109 by a playback operation of the digital video camera 103. In the storage control unit 109, the DV format analysis unit 203 analyzes the received video in the DV format for content separation. If a content break is found, a file is created in the content storage unit 107 as another MPEG content. As a result, four Mpeg contents from content (1) to content (4) are stored in the content storage unit 107. At the same time, since there is no recording start / stop time information in MPEG, a content information table 202 is generated in the content storage unit 107. In the content information table 202, an ID for identifying the content, the shooting date and time of the content, and the content Manage the association. In addition, the storage medium of the digital video camera 103 is not a DV tape, but a removable medium such as a CD-R, a CD-RW, a DVD-R, a DVD-RAM, a DVD-RW, an SD memory, and a removable hard disk that can be randomly accessed. In this case, the transfer process can be omitted by directly reading the media instead of the cable connection. In media having these file systems, there is a shooting start time as the content creation time, and the content shooting end time can be calculated from the content length and the shooting start time.

  Next, a method for designating and reproducing content from a plurality of accumulated content by a user operation will be described with reference to FIGS.

  FIG. 5 is an image diagram showing a shooting start time and a shooting end time of the content stored in the content storage unit 107. In FIG. 5, content 1 (501), content 2 (502), and content 3 (503) indicate moving images, and content 4 (504) indicates a still image. In the figure, reference numeral 501 indicates that the content 1 is a content that starts shooting at time t2 and ends shooting at time t5. Similarly, 502 indicates that the shooting start time of the content 2 is t4 and the shooting end time is t6, and 503 indicates that the shooting start time of the content 3 is t1 and the shooting end time is t3. Reference numeral 504 indicates that the content 4 is captured at time t6.

  The procedure for outputting and displaying the list of contents in the content storage unit 107 on the output device 113 is as follows. The user instructs the input unit 111 to display a list of contents. Upon receiving this user instruction, the input unit 111 issues a content list output instruction to the reproduction control unit 112. Upon receiving the content list output instruction, the playback control unit 112 issues a content list acquisition request to the content storage unit 107. Upon receiving a list acquisition request, the content storage unit 107 acquires a list of content managed internally, and returns the acquired list to the playback control unit 112. Upon receiving the content list response from the content storage unit 107, the reproduction control unit 112 instructs the output control unit 108 to output. Thereby, the content reproduction apparatus 106 can output and display a list of contents stored therein on the output apparatus 113.

  Here, an example of a list display screen will be described with reference to FIGS. 6 is a moving image, and FIG. 7 is a still image content list display screen. 6 and 7 are displayed on the output device 113 by the output control unit 108. 6 and 7 are the same as those in FIG. Reference numeral 601 denotes a screen display area of the output device 113. Reference numeral 602 denotes a list of contents drawn on the screen, which indicates that items of date, title, and time are displayed for each content. It indicates that the content 3 photographed at the date and time t1 is an image at time t3 to t1. Similarly, the shooting date / time of content 1 is t2 and the time is t5-t2, and the shooting date / time of content 2 is t4 and the time is t6-t4. A focus 603 (a portion surrounded by a thick line) indicates a location (content) designated by the user in the list and is displayed so that the user can recognize which is designated. The user designates desired content by inputting an operation for moving the focus 603 from the input unit 111. Reference numeral 604 denotes a tab indicating that a moving image list is displayed. In the list display shown in FIGS. 6 and 7, the content in the content storage unit 107 is divided into three types of moving images, still images, and sounds. FIG. 6 shows a moving image content list screen. When the display is switched from the tab 604 to the tab 605 by a user operation, the screen is switched to the still image list screen of FIG. Reference numeral 701 denotes a still image content list screen, and there is no time information unlike a moving image.

  The user looks at the moving image list shown in FIG. 6 and instructs the input unit 111 to reproduce the content desired to be reproduced (here, content 3). When the input unit 111 receives an input of a playback instruction, the input unit 111 inquires the output control unit 108 about the currently specified content, and sends a playback instruction command for the currently specified content 3 to the playback control unit 112. When receiving a content 3 playback instruction, the playback control unit 112 reads the content 3 data from the content storage unit 107, performs decoding processing, and sends the decoded video to the output control unit 108. Also, the playback control unit 112 reads content information such as the content name and content length, and transmits the content information to the output control unit 108. When the output control unit 108 receives the decoded content 3 video and the content name and length information of the content 3, the output control unit 108 displays the video on the output device 113.

  Here, a screen displayed on the output device 113 will be described with reference to FIG. FIG. 8 shows an output screen during content 3 playback. In FIG. 8, the same components as those in FIG. Reference numeral 801 denotes a content name. Reference numeral 802 denotes a reproduction state of the content, which allows the user to recognize that the content is being reproduced. Reference numeral 803 denotes the date and time when the currently reproduced video was shot. In MPEG2, there is no shooting time information, but it can be calculated from the shooting start time and the playback time information based on the beginning of the content. The shooting start time is held in the content information table 202 in the content storage unit 107. A band 804 indicates the total time of the content being reproduced. A bar 805 indicates which position is currently being reproduced with respect to the entire time. If it is immediately after the start of playback, it is located on the left side in the band 804, and when it is playing near the end of the content, it is located on the right side in the band 804.

  The input unit 111 issues a reproduction instruction for the content 3 to the reproduction control unit 112, and then instructs the detection unit 110 to detect a content that overlaps the shooting time of the content 3. Upon receiving the detection instruction, the detection unit 110 issues an acquisition request for the content information table 202 to the content storage unit 107. When the detection unit 110 acquires the 202 content information table, the detection unit 110 starts detecting content that overlaps the content 3. The detection algorithm will be described later.

  When duplicate content is found, the detection unit 110 acquires the duplicate content name, the duplicate start time, and the duplicate end time. Note that the content name is not limited as long as the content can be uniquely identified, and may be managed by a file identifier. In this case, the content storage unit 107 manages the content by the file identifier.

  When there is content as shown in FIGS. 5, 6, and 7 in the content storage unit 107, when trying to reproduce the content 3, the detection unit 110 displays the content name “content 1 of the 501 content that overlaps with the content 503. , Its duplication start time “t2” and duplication end time “t3”. At the time when reproduction at time t2 is started during reproduction of the content 3-502, the user is notified of duplication.

  Here, means for notifying the existence of overlapping contents will be described with reference to FIG. FIG. 10 is an image diagram of a screen for notifying the user that there is an overlapping content. As notification means in FIG. 10, notification is made by displaying a star mark 1001 on the screen 601. The star mark 1001 may be any symbol and may be an image of a character or the like.

  Further, as shown in FIG. 11, as a means for notifying the user of overlap, the overlapped video may be reduced and reproduced in a partial area in the screen.

  Also, in the case where the overlapping content is a still image, such as when it is recorded at the shooting time t6 during the reproduction of the 502 content 2 in FIG. 5, the still image is displayed on the 601 screen as shown in FIG. You may draw thumbnails.

  In addition, when the overlapping content is a still image, it is possible to make it seem that the overlapping time is not a moment of the shooting time by giving a width before and after the shooting time.

  When the user receives an instruction on the screen that there is content with overlapping shooting times, the user can perform an operation of switching the screen to the overlapping content via the input unit 111.

  FIG. 13 is a flowchart showing a method of switching the content being reproduced by a user operation during content reproduction.

  Using FIG. 1 showing the block of the content playback device 106, FIG. 5 showing the content stored in the content storage unit 107 of the content playback device 106, and FIG. 13 showing the flow of switching, the playback content is displayed during content playback. The switching process will be described.

  In the START state of the flowchart, it is assumed that content 3 (503) in the content storage unit 107 of the content playback device 106 is being played back by the playback control unit 112.

  First, in step 1401, the detection unit 110 detects from the content storage unit 107 the content whose shooting time overlaps with the content 3 (503) being reproduced and the earliest start time of the overlap. If there are multiple, detect all. As shown in FIG. 5, content 1 (501) is overlapped with the content 3 (503) being reproduced and the shooting time overlaps, and the overlapping period is from time t 2 to t 3.

  Next, in step 1402, the process branches depending on whether there is duplicate content. In this case, since content 1 (501) is detected as duplicate content, the process proceeds to step 1403.

  Next, in step 1403, the reproduction control unit 112 reproduces the content 3 until the duplication start time t2.

  In step 1404, the playback control unit 112 notifies the user that there is duplicate content via the output control unit 108.

  In the previous step 1403, the detection unit 110 notifies the reproduction control unit 112 of the content 1 (501), the duplication start time t2, and the duplication end time t3 as detection results, so that the reproduction control unit 112 performs t2. Since it is possible to notify the user that there is an overlapping content at the same time as the reproduction, the reproduction control unit 112 may be notified in advance.

  In step 1405, the input unit 111 accepts a user instruction and branches depending on whether or not there is an instruction. When the user does not perform an operation of switching to the content 1, the process proceeds to step 1407, where the reproduction control unit 112 reproduces the content 3 to the end and ends.

  On the other hand, if the user performs an operation in step 1405, the process proceeds to step 1406. In step 1406, the playback control unit 112 switches the content being played back from content 3 to content 1.

  After the content being reproduced is changed to content 1 (501), the above steps 1401 to 1406 are repeated, so that the content can be freely switched in the overlapping section of the content having the same shooting time.

  FIG. 14 is a flowchart showing a method of switching the content being reproduced without user operation during content reproduction.

  Using FIG. 1 showing the block of the content playback device 106, FIG. 5 showing the content stored in the content storage unit 107 of the content playback device 106, and FIG. 14 showing the flow of switching, the playback content is displayed during content playback. The switching process will be described.

  In the START state in the flowchart of FIG. 14, it is assumed that the content 3 (503) in the content storage unit 107 of the content reproduction device 106 is being reproduced by the reproduction control unit 112. Also, assume that content 4, content 1, content 2, and content 3 are determined in descending order of priority when content is reproduced. The content reproduction priority is managed by the content storage unit. Here, the priority may be specified individually in advance by the user when the user accumulates the content in the content reproduction apparatus. The detection unit 110 has a function of holding the name of the content to be switched next.

  First, in step 1501, the detection unit 110 initializes the name of the content to be switched next. Although the content is identified by the content name this time, it is sufficient that the content can be identified. Therefore, a number such as an ID managed by the content storage unit 107 may be used.

  In step 1502, the detection unit 110 confirms whether there is content to be compared among the content in the content storage unit 107. If there is only content being reproduced in the content storage unit 107 or only content that has already been compared, the processing proceeds to step 1506.

  In this case, the detection unit 110 selects content 1 as a comparison target in step 1502 and proceeds to step 1503 because there is content.

  Next, in step 1503, confirmation processing is performed to determine whether content 1 overlaps with content 3 being reproduced. As shown in FIG. 5, since the content 3 overlaps with the content 1 in the section from the time t2 to the time 3, it is determined in step 1504 that there is an overlap, and the process proceeds to step 1505. If there is no duplication, the process proceeds to step 1502, and as long as there is content in the accumulation control unit 107, processing for detecting duplication of content is continued.

  In step 1505, the name of the content to be switched is updated. Since there is no switching content at this time, the detection unit 110 newly holds the content 1 name as the content to be switched next. If there is already content to be switched next, the priority is updated by the following three judgments.

  If the priority of both the content to be switched and the newly found content is higher than the content currently being played back, the earlier overlap start time is retained.

  If the priority of one of the content to be switched and the newly found content is higher than the content currently being played back, the content with the higher priority is held.

  If both of the content to be held to be switched and the newly found content are lower in priority than the content currently being played back, the content with the higher priority is held among them.

  The detection unit 110 repeats the processing from step 1502 to step 1505 as long as there is content in the content storage unit, and finds the content to be switched next.

  Since the content 2 and the content 4 do not overlap with the content 3 this time, the detection unit 110 proceeds to step 1506 with the content 1 held as the content to be switched next.

  Next, in step 1506, the process branches depending on whether there is content to be switched. Since content 1 is held as the content to be switched this time, the process proceeds to step 1507. If not, the process proceeds to step 1511 and the current content is reproduced to the end and the process ends.

  Next, in step 1507, the process branches by determining whether the priority of the content 1 to be switched next is higher than the priority of the content 3 being reproduced. In this case, since the priority of the content 1 is higher, the process proceeds to step 1508.

  In step 1508, the current content is reproduced until t2, which is the switching position. On the other hand, if the priority of the target is lower in step 1507, the process proceeds to step 1509. If the current content is reproduced to the end in step 1509, the process proceeds to step 1510.

  In step 1510, the playback control unit 112 switches playback content. In this case, after the reproduction control unit 112 reproduces the content 3 to the position of the shooting time t2 in step 1508, the reproduction control unit 112 switches to reproduction of the content 1 from the position t2 in step 1510.

  When step 1510 is completed, the process returns to step 1501 and repeats step 1501 to step 1510 under the condition that content 1 is being reproduced, so that it is possible to automatically reproduce the content while switching to the high priority content.

  When the content of FIG. 5 is actually reproduced according to the flowchart shown in FIG. 14, the content 3 is first reproduced from t1 to t2, and then the content 1 is reproduced from t2 to t5, and then the content 2 is reproduced from t5 to t6. Play until. Furthermore, the content 4 is reproduced at the time t6, the reproduction is returned to the content 2 after the reproduction is completed, and the reproduction is terminated at the time t7.

  In addition, it was assumed that the priority for playing back the content this time is explicitly set by the user at the time of transfer. However, priority is automatically given from the device information of the transfer source at the stage of transferring the content to the content playback device. By adding a degree, it is possible to eliminate the trouble of attaching each item. Specifically, priority 1 may be specified if the transfer source device is digital, and 2 may be specified if analog.

  Alternatively, the number of times of reproduction within the content reproduction apparatus may be counted, and a high number of times may be set as a high priority.

  In addition, when there are still images and moving images, the still image is a scene intended by the photographer. Therefore, if there is a still image, the still image is always prioritized or displayed on a small screen as shown in FIG. In addition, by setting the priority of still images to the highest level, it is possible to display all the scenes intended by the user.

  In addition, in the method of switching the content to be automatically reproduced according to the priority, the explanation has been given regarding the overlapping of the shooting time as an example of the related content. However, the content having the closest shooting time is set as the related content. Also good. FIG. 15 is a diagram showing the relationship between the recording start / end times of content managed by the content storage unit. In the case where the three contents shown in FIG. 15 are in the content storage unit, when the content 12 is started to be reproduced, if there is no duplicate content related to the content 12, the content 10 is recognized as the related content. A process of switching to the reproduction of the content 10 after the reproduction of the content 12 may be performed.

  This time, the method of switching by the user's operation and the method of switching automatically according to the priority have been described separately, but they may be combined, the priority is variable, and the priority of the content switched to playback by the user's operation is set. As long as there is no user operation, continuous playback may be performed according to a method of switching automatically.

  Next, a duplicate content detection method will be described with reference to FIG. FIG. 9 is a diagram showing a duplicate content detection flow.

  First, in step 900, the duplication information having the content name and duplication start time of the content whose shooting time overlaps with the content being reproduced is initialized. In step 901, the detection unit 110 acquires the content information table 202 from the content storage unit 107. The detection unit 110 acquires the recording start time To_start and the end time To_end of the content for which the reproduction instruction is received from the acquired content information table 202. Next, in step 902, it is confirmed whether there is another content in the content storage unit 107. If there is no content to be reproduced in the content storage unit 107, the detection process ends here. If there is content to be compared, in step 903, the recording time Ti_start and end time Ti_end of the content to be compared are acquired from the content information table 202. Next, in step 904, it is checked whether or not the content to be compared overlaps with the content to be reproduced. Specifically, if Ti_start is earlier than To_start and To_end is earlier than Ti_end, Ti_start is between To_start and To_end, or Ti_end is between To_start and To_end, You can see that it is overlapping somewhere. If this duplication confirmation condition is satisfied, the process proceeds to step 905, and the detection unit 110 stores the content name and duplication start time of the compared contents. If the content name and the duplication start time are already stored, the earlier duplication start time is stored. If they are the same, multiple are stored. Next, in step 902, it is confirmed whether there is content, and steps 902, 903, and 904 are repeated by the number of contents managed by the content storage unit 107. On the other hand, if the compared contents do not overlap in step 904, the process proceeds to step 902 to check whether there is content. By the method, duplicate information can be generated in the detection unit.

  As described above, during content playback, the user is notified that there is content such as video, still image, or audio that was shot at the same time as the content being played back, based on the switching operation by the user, priority, etc. Automatic switching makes it possible to easily switch the content being played back.

  The content playback apparatus and content playback method according to the present invention have a function of displaying a plurality of contents in association with each other during content playback, and are useful as an AV device having a playback function for moving image content and still image content. In addition, it can be applied to applications such as information devices, portable terminals, and in-vehicle devices having a content reproduction function.

Configuration diagram of content reproduction apparatus according to an embodiment of the present invention Detailed view of the content storage unit and storage control unit of the content playback apparatus in the embodiment of the present invention DV tape content recording image The figure which shows an example of the information of the content managed in a content storage part The figure which shows the relationship of the recording start / end time of the content managed in a content storage part The figure which shows the list screen of the content stored in the content storage part displayed on an output device The figure which shows the list screen of the content stored in the content storage part displayed on an output device The figure which shows the reproduction screen of the content which is displayed on the output device The flowchart which shows an example of the flow of a detection process of the duplicate content of the content reproduction apparatus in embodiment of this invention. The figure which shows the screen for showing to a user that there exists duplicate content displayed on an output device The figure which shows the screen for showing to a user that there exists duplicate content displayed on an output device The figure which shows the screen for showing to a user that there exists duplicate content displayed on an output device The flowchart which shows an example of the flow of the process which switches the content reproduced | regenerated during the content reproduction of the content reproduction apparatus in embodiment of this invention The flowchart which shows an example of the flow of the process which switches the content reproduced | regenerated during the content reproduction of the content reproduction apparatus in embodiment of this invention The figure which shows the relationship of the recording start / end time of the content managed in a content storage part

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Digital camera 103 Digital video camera 106 Content reproduction apparatus 107 Content storage part 108 Output control part 109 Accumulation control part 110 Detection part 111 Input part 112 Playback control part 113 Output device 201 MPEG content 202 Content information table 203 DV format analysis part

Claims (10)

A content playback device that plays back and outputs content,
Content storage means for storing one or more contents to be reproduced;
Content playback control means for playing back the content stored in the content storage means;
Detecting means for detecting content related to the content being reproduced by the content reproduction control means from the contents accumulated in the content accumulation means;
A content reproduction apparatus comprising: output control means for outputting a detection result obtained by the detection means. The content reproduction apparatus according to claim 1, wherein the reproduction control unit switches the content to be reproduced to the related content detected by the detection unit. 2. The content reproduction apparatus according to claim 1, wherein the detection unit detects content shot at the same shooting time as the content being reproduced by the content reproduction control unit as related content. 2. The content reproduction apparatus according to claim 1, further comprising a storage control unit that receives content data and stores the received content data in the content storage unit. 5. The content reproduction apparatus according to claim 4, wherein the storage control unit stores the content shooting time, the shooting time, and the content in association with each other in the content storage unit. A content reproduction method for reproducing and outputting content,
A detection step of detecting content related to the content being played back during playback;
A notification step for outputting presence / absence of detected related content;
And a switching step of switching the content being played back to the content detected in the detecting step. 7. The content reproducing method according to claim 6, wherein the detecting step detects content whose shooting time overlaps with the content being reproduced. 7. The content reproduction method according to claim 6, wherein the switching step has the same shooting time at the reproduction position of the content before switching and the reproduction position of the content after switching. 7. The content reproducing method according to claim 6, wherein the notifying step displays a still image or a moving image indicating the detection in a screen outputting the content being reproduced. The said notification step displays the detected still image in the screen which is outputting the content being reproduced when the content detected in the detection step is a still image. Content playback method.

Images