JP5299043B2 - Video recording / reproducing apparatus, video recording / reproducing method, and video recording / reproducing program - Google Patents

Description

  The present invention relates to a video recording / reproducing apparatus, a video recording / reproducing method, and a video recording / reproducing program for processing video data having different recording formats.

  As described in Patent Document 1, there are a wide variety of video data recording formats, and various methods are used depending on the recording media and the like. For example, in a small video camera, devices of different systems such as a DVD video camera, an SD-VIDEO camera, a DV video camera, and a BD video camera are commercialized.

  In addition, even for the same recording medium, recording formats of different standards are often used. For example, even if a device uses a DVD as a recording medium, the device uses the DVD-ROM standard, the DVD-VR standard, or the like.

JP 2003-6979 A

In general, video data is accompanied by reproduction control information specific to a recording format for reproducing the video data, and reproduction is performed with reference to the reproduction control information. The playback control information defines an interface for playback. Since the playback control information has a different format for each recording format, there is a problem that if the recording format is different, the interface is different and the operational feeling is impaired. Therefore, an object of the present invention is to make it possible to reproduce video data of different recording formats recorded by different devices using a common interface.

To solve the above problems, a video recording and reproducing apparatus of the present invention includes a communication means for communicating with an external device that stores image information including the recording format-specific individual playback control information of the video data and video data, wherein Recording format discrimination means for discriminating whether or not the recording format of the video data stored in the external device is any one of the predetermined recording formats, and the recording format of the video data stored in the external device is the predetermined format When the recording format is determined, the individual playback control information is acquired from the external device based on the determined recording format, and the acquired individual playback control information is stored in the predetermined recording format . common reproduction control information generating means for generating a common reproduction control information converted into the general-purpose format that does not depend on any , Reproduction performed and recording means for recording the generated the common reproduction control information in the storage area, with reference to the common reproduction control information recorded in the storage area, the reproduction process of the video data stored in the external device And a processing means.

Here, when the information for referring to a still image is included in the individual reproduction control information, the recording unit generates the still image from the video data, records the still image in the storage area, and performs the common reproduction control. raw form said still image can contain references to information to the information. The common reproduction control information can be recorded in a predetermined page description language.

  Further, the common playback control information includes one or more pieces of information indicating the playback order of the unit video obtained by dividing the video data, and generates an image for accepting selection of the information indicating the playback order. You may make it provide the control means to do. The storage area may be a storage area in the external device.

To solve the above problems, a video recording and reproducing method of the present invention includes the steps of communicating with an external device that stores image information including the recording format-specific individual playback control information of the video data and video data, the external Determining whether the recording format of the video data stored in the device is any predetermined recording format; and the recording format of the video data stored in the external device is the predetermined recording format. If it is determined that, based on the determined the recording format, the obtains the individual playback control information from an external device, the acquired the individual playback control information, dependent on any of the predetermined recording format Generating common reproduction control information converted into a general-purpose format not to be generated, and the generated common reproduction control information Comprising a step of recording a broadcast in the storage area, with reference to the common reproduction control information recorded in the storage area, and performing the reproduction process of the video data stored in the external device, the.

To solve the above problems, a video recording program of the present invention causes a computer to execute the steps of communicating with an external device that stores image information including the recording format-specific individual playback control information of the video data and the video data Determining whether the recording format of the video data stored in the external device is any predetermined recording format; and the recording format of the video data stored in the external device is the predetermined format If it is determined that the recording format, on the basis of the discrimination the recording format, the obtains the individual playback control information from an external device, the individual playback control information acquired, any of the predetermined recording format generating a common reproduction control information converted into the general-purpose format that does not depend on the product A step of recording the common reproduction control information in the storage area, with reference to the common reproduction control information recorded in the storage area, and performing the reproduction process of the video data stored in the external device, the Let it run.

  According to the present invention, video data having different recording formats recorded by different devices can be reproduced by a common interface.

It is a figure which shows typically the structure of the video recording / reproducing system which concerns on this embodiment. It is a block diagram which shows the function structure of a media recording / reproducing apparatus and a digital video camera. 10 is a flowchart for describing processing for generating common playback control information based on playback control information of video information recorded on a DVD disc loaded in a digital video camera by a media recording / playback apparatus. It is a figure which shows the directory / file structure of the DVD disc based on DVD-VR specification. It is a flowchart explaining the common reproduction | regeneration control information addition process which a common reproduction | regeneration control information processing part performs . It is a figure which shows an example of the analysis result outline | summary of a common reproduction | regeneration control information processing part. It is a figure which shows an example of the produced | generated common reproduction | regeneration control information. It is a figure which shows the directory / file structure of the common reproduction | regeneration control information storage part in the state which the process which produces | generates common reproduction | regeneration control information was complete | finished. It is a figure which shows the directory / file structure of the common reproduction | regeneration control information storage part in the state which the process which produces | generates several common reproduction | regeneration control information was complete | finished. 6 is a flowchart for explaining reproduction of video information stored in a digital video camera in the media recording / reproducing apparatus. It is a figure which shows an example of the menu screen for selecting the play list displayed on a display apparatus. It is a figure which shows the directory / file structure at the time of recording common reproduction | regeneration control information on the DVD disc loaded in the digital video camera.

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing a configuration of a video recording / reproducing system according to the present embodiment. As shown in the figure, the video recording / playback system 1 includes a media recording / playback device 10 connected to a display device 70, a first digital video camera 20, and a second digital video camera 50. A media recording and reproducing apparatus 10 and the first digital video camera 20 or the second digital video camera 50, a predetermined communication standard, for example, communication can be performed via USB. In this case, video data, control data, and the like can be transmitted by connecting both via the USB cable 40. Note that the video data includes audio information and other information.

  The first digital video camera 20 includes a portable or fixed recording medium, and records video data in a predetermined recording format corresponding to the recording medium. The video data is information necessary for reproducing the video data, and is accompanied by unique playback control information (navigation information) specific to the recording format of the video data. This is called video information. In this embodiment, it is assumed that the recording medium is a DVD and the recording format is a DVD-VR standard. Of course, this is only an example, and the present invention is not limited to the DVD and DVD-VR standards.

  The second digital video camera 50 also includes a portable or fixed recording medium, and records video data in a predetermined recording format corresponding to the recording medium. In the present embodiment, the recording medium of the second digital video camera 50 is an HDD, and the recording format is SD-VIDEO standard. Of course, this is only an example, and the present invention is not limited to the HDD and SD-VIDEO standards.

The media recording / reproducing apparatus 10 includes a portable or fixed recording medium, and can record video information on the recording medium and reproduce the recorded video information. In the present embodiment, the recording medium of the media recording / reproducing apparatus 10 is, for example, a hard disk, but is not limited thereto, and may be a semiconductor memory , a BD, or the like. The media recording / reproducing apparatus 10 also reproduces video data recorded on the recording medium of the first digital video camera 20 or the second digital video camera 50 for general-purpose reproduction without depending on the recording format. The common reproduction control information to be described later is generated and stored.

  FIG. 2 is a block diagram showing functional configurations of the media recording / reproducing apparatus 10, the first digital video camera 20, and the second digital video camera 50 connected via the USB cable 40. As shown in the figure, the media recording / reproducing apparatus 10 includes a communication unit 110, a control unit 120, an operation receiving unit 130, a disk management unit 140, an HDD 145, a reproduction processing unit 150, an image processing unit 160, an image output unit 170, a recording format. A determination unit 180 and a common reproduction control information processing unit 190 are provided. Note that a drive function of a portable recording medium such as a DVD or an SD card may be provided.

The communication unit 110 via the USB cable 40 communicates with the first digital video camera 20 or the like, and transmits the control data, and receives image information. The control unit 120 is a functional unit that comprehensively controls various processes in the media recording / reproducing apparatus 10. For example, a process for creating various menu screens, playlist display screens, and the like for presenting information to the user and receiving operations. Do.

  The operation accepting unit 130 accepts an operation from a user via an operation button or the like provided on the media recording / reproducing apparatus 10. The operation received by the operation receiving unit 130 from the user includes, for example, an instruction to acquire and convert playback control information from the connected first digital video camera 20, etc., video data stored in the connected first digital video camera 20, etc. For example, playlist selection, playback instruction, menu selection operation, and the like.

The disk management unit 140 controls reading and writing of data with respect to the HDD 145. The reproduction processing unit 150 performs reproduction processing of video data stored in the connected first digital video camera 20 or the like. The image processing unit 160 performs processing for generating a still image with a predetermined resolution based on an image obtained from video data.

The image output unit 170 is connected to the display device 70, and performs processing for outputting a video played by the playback processing unit 150, a menu screen generated by the control unit 120, a playlist display screen, and the like to the display device 70. Do.

The recording format discrimination unit 180 performs processing for discriminating the recording format of the video information recorded on the recording medium such as the first digital video camera 20. Recording format of video information, for example, it can be determined or examined directory structure image information is stored, whether the predetermined file, the name, with often a useful examine the contents and the like. In the recording format discriminating unit 180, information related to a plurality of recording formats, for example, a DVD-VR standard, a BD-RE standard, an SD-VIDEO standard, an AVCHD standard, and the like is registered in advance so that the recording format can be supported. Keep it. Any of these recording formats can handle video data compressed by MPEG-2 or MPEG-4 / AVC.

The common playback control information processing unit 190 generates common format common playback control information based on the recording format-specific individual playback control information included in the video information. Here, the common reproduction control information is reproduction control information obtained by converting individual reproduction control information that differs for each recording format into a general-purpose format such as an XML format so as not to depend on the recording format. By reproducing the video data using the common format common playback control information, the video data using the common compression method can be played back on a general-purpose common interface regardless of the recording format of the video data. Therefore, the common playback control information processing unit 190 is configured to be able to interpret the contents of the individual playback control information for each recording format that can be discriminated by the recording format discriminating unit 180. Details of the process for generating the common reproduction control information will be described later. Further, when the common reproduction control information processing unit 190 generates the common reproduction control information, if the reproduction control information includes representative image information such as a thumbnail, the common reproduction control information processing unit 190 associates the representative image with the common reproduction control information. May be performed .

  The common reproduction control information storage unit 195 is configured with a non-volatile storage device such as a flash memory, and stores the common reproduction control information generated by the common reproduction control information processing unit 190. However, a part of the HDD 145 may be used. The common reproduction control information is stored in the common reproduction control information storage unit 195 with an identifier or the like of video information to be reproduced by the common reproduction control information.

  As shown in FIG. 2, the first digital video camera 20 includes a photographing unit 210, a recording / reproducing unit 220, and a communication unit 230, and records video information on a DVD disk 30 loaded therein. In the present embodiment, video information is recorded according to the DVD-VR standard.

The photographing unit 210 includes a photographing mechanism such as a lens and an image sensor, and outputs video data obtained by converting optical information into electronic information. The recording / reproducing unit 220 performs processing for recording the video data input from the photographing unit 210 on the DVD disk 30 in accordance with the recording format of the DVD-VR standard. Further, under the control of the media recording and reproducing apparatus 10 reproduces the video information recorded on the DVD disc 30. The communication unit 230 via the USB cable 40 communicates with the media recording and reproducing apparatus 10, and transmits the video information recorded in the DVD disc 30, and receives control data.

  The second digital video camera 50 also includes a photographing unit 510, a recording / reproducing unit 520, and a communication unit 530, and records video information in the HDD 60 loaded therein. In the present embodiment, video information is recorded according to the SD-VIDEO standard.

The photographing unit 510 includes a photographing mechanism such as a lens and an image sensor, and outputs video data obtained by converting optical information into electronic information. The recording / reproducing unit 520 performs processing for recording the video data input from the photographing unit 510 on the HDD 60 in accordance with the recording format of the SD-VIDEO standard. Further, under the control of the media recording and reproducing apparatus 10 reproduces the video information recorded on HDD 60. The communication unit 230 via the USB cable 40 communicates with the media recording and reproducing apparatus 10, and transmits the video information recorded in HDD 60, and receives control data.

  Next, a flowchart of FIG. 3 shows a process in which the media recording / reproducing apparatus 10 generates common reproduction control information based on the reproduction control information of the video information recorded on the DVD disk 30 loaded in the first digital video camera 20. Will be described with reference to FIG. In general, video information includes video data and individual reproduction control information specific to a recording format in which control information for reproducing the video data is recorded. Video data is encoded and compressed by a predetermined method such as MPEG-2, and is stored in a predetermined directory as one or a plurality of files. In addition, individual reproduction control information is also stored in a predetermined directory as one or a plurality of files according to control information to be recorded.

When the first digital video camera 20 is connected to the media recording / reproducing apparatus 10 via the USB cable 40, communication is started according to the USB protocol. The recording format discriminating unit 180 of the media recording / reproducing apparatus 10 acquires the directory / file structure of the DVD disk 30 loaded in the first digital video camera 20, thereby recording the recording format of the video information recorded on the DVD disk 30. determining (S101). Here, determination of the recording format is performed or examining a directory / file structure of a DVD disc 30, the presence or absence of a predetermined file, the name, with often a useful examined recording format-specific structure and information content, and the like.

In this embodiment, since the video information of the DVD disc 30 is recorded in the DVD-VR standard recording format, an outline of the DVD-VR standard recording format will be described. FIG. 4 is a diagram showing a directory / file structure of a DVD disc based on the DVD-VR standard. As shown in the figure, in the DVD-VR standard, a “DVD_RTAV” directory is created in the root directory, and at least two files are arranged in the “DVD_RTAV” directory. "VR_MOVIE.VRO" one of which is a file that stores the video data has been encoded I and audio / image captured by the first digital video camera 20 in the MPEG system. Another “VR_MANGER.IFO” is a file including reproduction control information for reproducing the contents of “VR_MOVIE.VRO”, and is also called a navigation information file.

  Therefore, the recording format determination unit 180 detects that the “DVD_RTAV” directory is created in the root directory of the DVD disk 30 and the “VR_MOVIE.VRO” file and the “VR_MANGER.IFO” file are arranged. It can be determined that the recording format of the video information recorded on the DVD disk 30 is the DVD-VR standard. Similarly, the recording format discrimination unit 180 can discriminate each recording format by detecting a directory / file structure specific to the AVCHD standard, the SD-VIDEO standard, or the like.

  “VR_MANGER.IFO”, which is individual playback control information in the DVD-VR standard, is described according to a recording format defined in the DVD-VR standard. The contents described in “VR_MANGER.IFO” are various, but typically include “whole media information”, “stream information”, “playlist information”, “time map information”, and “representative image information”.

  “Media whole information” is information for managing the video data recorded in the recording medium and all the various information related thereto.

  “Stream information” is information used for decoding video data such as a video encoding method, resolution, frame rate, audio encoding method, number of channels, sampling frequency, and the like.

  “Playlist information” is information for reproducing a scene (chapter) obtained by dividing video data in an arbitrary order. A scene is expressed as cell information that holds a start time and an end time, and playlist information is composed of one or more pieces of cell information. Note that a plurality of pieces of playlist information can be recorded in order to enable combined playback of various scenes.

  The “time map information” is information in which the elapsed time of the video and the recording position of the video data corresponding thereto are recorded in a table format. In general, in MPEG-compliant video encoding, a method of dynamically allocating a code amount according to the complexity of video data is employed. In this case, the elapsed time of the video data and the code amount are not in a linear relationship. Therefore, even if the start time of the cell information is given, it is difficult to determine the recording position of the corresponding video data and perform access for reproduction at high speed. In order to solve this problem, time map information is recorded. By referring to the time map information, it is possible to quickly access the accurate video data position from the start time or end time of the cell information.

  The “representative image information” is information for displaying an image representing video data or a scene, so-called a thumbnail image, so that the user can easily identify the video data or scene. The representative image information records specific time information of video data, and the image processing unit 160 of the media recording / reproducing apparatus 10 generates a still image from the video data by referring to the representative image information. This still image can be used as a representative image on a menu screen for video information selection, playlist selection, scene selection, and the like.

Returning to the description of the flowchart shown in FIG. 3, if the recording format discriminating unit 180 discriminates the recording format of the video information recorded on the DVD disc 30, it cannot be discriminated or the recording format is not compatible. If this occurs (S102: No), the following processing is not performed . On the other hand, if the recording format is compatible (S102: Yes), a process for generating common reproduction control information is performed (S103). The process of generating the common playback control information is started after receiving a start instruction from the user, for example. However, the present invention is not limited to this. For example, the first digital video camera 20 is connected to the media recording / playback apparatus 10. The common reproduction control information may be automatically generated when the connection is established.

FIG. 5 is a flowchart for explaining the detailed procedure of the common reproduction control information adding process performed by the common reproduction control information processing unit 190. Common playback control information processing section 190, the recording format discrimination unit 180 has a recording format is determined I, to obtain the individual playback control information from the DVD30 the first digital video camera 20 (S201). If the discriminated recording format is the DVD-VR standard as in the present embodiment, the “VR_MANGER.IFO” file in the “DVD_RTAV” directory may be referred to.

The common reproduction control information processing unit 190 analyzes the acquired individual playback control information (S202). In general, the content of the individual reproduction control information is binary data described according to a syntax uniquely defined for each recording format. The common reproduction control information processing unit 190 is configured to be able to interpret these syntaxes in advance.

  FIG. 6 is a diagram illustrating an example of an analysis result summary of the common reproduction control information processing unit 190. As shown in the figure, the analysis result includes stream information 601, time map information 602, and playlist information 603. Note that the time map information 602 is included in the stream information 601.

  The playlist information 603 is divided into an actual playlist that manages the reproduction of all captured videos, and a user playlist that is additionally created by the user to select and reproduce only the desired scene. Each playlist includes one or more pieces of cell information, each corresponding to a scene. Each cell information includes entry point (EP) information, time and name are linked, entry point is selected from the name, and cue playback is possible. The representative image point, stream period, cell period, and entry point are all described by a PTS (presentation time stamp) defined by the MPEG standard, for example, with a clock value of 90 kHz.

  In addition, the disc information and the playlist information 603 at the head of the analysis result include representative image information 604a, 604b, and 604c. This is because representative image information is included in the original reproduction control information.

As described above, when the representative image information is included in the original individual reproduction control information (S203: Yes), the common reproduction control information processing unit 190 performs processing corresponding to the representative image (S204). Here, processing corresponding to the representative image will be described. As described above, the representative image is a relatively low-resolution still image that displays a specific point of the video included in the video information, each playlist, scene (chapter), etc. in a thumbnail format so that the user can easily identify it. It is a picture.

  Some video information recording formats hold only time information as representative image information and do not have image information. In such a recording format, when displaying the representative image on the menu screen, the video data may be searched based on the time information to generate a corresponding still image. The generation of a still image requires decoding of video data, changing the resolution as necessary, and so on. When displaying a large number of representative images on a playback menu screen, it takes time to complete the display.

  Therefore, in the media recording / reproducing apparatus 10 of the present embodiment, when representative image information is included in the individual reproduction control information, in the process of generating the common reproduction control information based on the individual reproduction control information, A representative image of resolution is created and stored in the common reproduction control information storage unit 195, and link information is included in the common reproduction control information. As a result, it is not necessary to generate a representative image each time a menu for playback is displayed, and the time until the display is completed can be shortened.

Specifically, when the representative image information is included in the reproduction control information, the corresponding video data is searched from the DVD 30 of the first digital video camera 20 using the entry point and time information. Then, the reproduction processing unit 150 decodes the retrieved video data to generate image data for several frames. Then, the image processing unit 160 selects the image data corresponding to the time information, and converts the provisions of the resolution, the representative image by performing processing I has been in a predetermined still image compression method such as JPEG generation Is done.

When a plurality of representative image information is included in one playlist, the above process is repeated. In the present embodiment, the image processing unit 160 performs numbered generated representative image, and manages them into one of the representative image file representative images are continuous. The representative image file is recorded in a predetermined directory of the common reproduction control information storage unit 195 with a predetermined file name, as will be described later.

  When the analysis of the individual reproduction control information is finished, the common reproduction control information processing unit 190 creates common reproduction control information based on the analysis result (S205). In the present embodiment, the common reproduction control information is created as a text file in, for example, an XML format that is a general-purpose format in order to have versatility. Of course, the general-purpose format is not limited to the XML format. At this time, according to a predetermined XML format syntax or the like, the information element of the analysis result can be converted without losing the meaning. For this reason, it is possible to define a syntax that can represent information of the greatest common divisor of information indicated in the corresponding recording format. Or you may make it define the syntax which covers the information shown by the corresponding recording format.

  In the syntax used in the common playback control information, for example, the name defined individually in each recording format is associated with a unified name, or the parameters defined in each recording format have the same meaning Can be made common, or parameters corresponding to parameters specific to a certain recording format can be defined. In addition, in order to facilitate reference to video data, it is desirable that information representing time in the analysis result is represented by the number of video frames.

  In this embodiment, since the common playback control information is created in a text file in the XML format of the general-purpose format, a value can be written in a meaningful tag, and it is easy to understand intuitively. There is. In addition, there is an advantage that various items of each recording format can be easily handled by defining a tag.

  Here, as an example, a syntax related to a playlist used in the common reproduction control information of the present embodiment will be described. In the present embodiment, playlists are classified into two types: real playlists and user playlists. The actual playlist is a playlist created at the same time as the video data file when the content is recorded, and is a playlist closely related to the content. The user playlist is a playlist created by a user editing operation.

  Although not limited to the DVD-VR standard cited as an example in the present embodiment, the structure is synonymous with two types of playlists in other standards such as BD, although the names are different. For this reason, the playlist definition corresponding to each standard is made to correspond to the definition of the playlist and user playlist described below.

  Next, the syntax expression defined in the playlist of each standard is defined as an element of common reproduction control information expressed in the XML format. For example, a playlist name or the like is provided with a syntax expression representing the same meaning even if the notation differs for each standard. Therefore, a syntax expression corresponding to the name of the playlist is described as a playListName element.

  The description rule for the element expressed in the XML format is defined by DTD (Document Type Definition) or XML Schema which is general in the XML description. For example, a condition such as a character string for the playListName element and a maximum of 255 characters may be defined.

  FIG. 7 is a diagram illustrating an example of common reproduction control information related to the generated actual playlist information. In this example, the cell information of the playlist is described as a playItem element 701, and the representative image information 702a and 702b and the entry point information 702c and 702d are described by being integrated into the playListmark element 702.

  In the present embodiment, the common playback control information related to the entire video information is recorded as a “general.xfun” file described in the XML format, for example, a general format that does not depend on the recording format, and the common playback control related to the actual playlist is recorded. Information is also recorded as a “r00001.xfun” file described in a general-purpose format, for example, an XML format that does not depend on the recording format, and common playback control information related to the user playlist is recorded in an “v00002.xfun” file described in the XML format. Shall be recorded as Information recorded in the “general.xfun” file corresponds to “whole media information”.

  The representative image file related to the actual playlist is recorded as “r00001.thbf”, and the representative image file related to the user playlist is recorded as “r00002.thbf”. Reference information to individual representative images of these representative image files is indicated by the numbers in the thumbnailIndex element as representative image information 702a and 702b.

  As illustrated in FIG. 7, the playListMark element 702 includes a plurality of mark elements, and the mark element includes a type element, a refToPlayItem element, a markTime element, and a thumbnailIndex element.

  The type element is type information such as whether the mark element represents a representative image of a playlist or whether it is chapter information as expressed by an entry point (EP) of the DVD-VR standard. By providing such type information, the representative image information can be managed uniformly in the playListMark element 702.

  The refToPlayItem element and the markTime element indicate points in the playlist that are the basis for creating the representative image. The thumbnail index element is reference information to individual representative images in the representative image file as described above. Since the representative image is generated when the common reproduction control information is generated, it is not necessary to search the video data at the time of display, and the time until it is displayed can be shortened.

  When the common reproduction control information processing unit 190 generates common reproduction control information based on the individual reproduction control information according to the procedure described above, the control unit 120 stores the common reproduction control information in the common reproduction control information storage unit 195. Then, the process of generating the common reproduction control information is finished (S206). The common reproduction control information creates a directory for identifying video information in the root directory of the common reproduction control information storage unit 195, and further creates a “UNAV” directory for common reproduction control information in the directory. It is assumed that common reproduction control information is stored.

  The directory for identifying the video information can be, for example, the “DVD_RTAV” directory when the recording format of the original video information is the DVD-VR standard as in this embodiment. Then, a “UNAV” directory is created under the “DVD_RTAV” directory, and the generated common playback control information, that is, “general.xfun” file, “r00001.xfun” file, “v00002.xfun” file, “r00001. The “thbf” file and the “r00002.thbf” file are stored, and the process of generating the common reproduction control information is terminated. FIG. 8 shows the directory / file structure of the common reproduction control information storage unit 195 in a state where the process of generating common reproduction control information has been completed.

  Even when the second digital video camera 50 is connected, the media recording / reproducing apparatus 10 can similarly generate common reproduction control information and store it in the common reproduction control information storage unit 195. In this case, since the original video information is based on the SD-VIDEO standard, the directory for identifying the video information is created, for example, by creating an “SD_VIDEO” directory, and further adding a “UNAV” directory under the “SD_VIDEO” directory. Stores the common reproduction control information created and generated.

  FIG. 9 shows the common playback control information storage unit 195 in a state where the processing for generating the common playback control information for the first digital video camera 20 of the DVD-VR standard and the second digital video camera 50 of the SD-VIDEO standard is finished. The directory / file structure is shown. As shown in the figure, the common playback control information regarding the first digital video camera 20 is stored in the “UNAV” directory under the “DVD_RTAV” directory, and the common playback control information regarding the second digital video camera 50 is “SD_VIDEO”. "UNAV" directory under the "directory".

Next, playback of video information stored in the first digital video camera 20 in the media recording / playback apparatus 10 will be described with reference to the flowchart of FIG. When the first digital video camera 20 is connected (S301), the media recording / reproducing apparatus 10 refers to the common reproduction control information storage unit 195 and is recorded on the DVD 30 loaded in the first digital video camera 20. When the “UNAV” directory is generated in the directory corresponding to the video information (S302: Yes), the video information playback process using the common playback control information described below is performed .

Here, the media recording and reproducing apparatus 10 and the recording format of the first digital video camera 20 is the same, even if capable of reproducing video data I has been the individual playback control information included in the video information, or a media recording and reproducing apparatus 10 and even if the recording format of the first digital video camera 20 is different, if it is "UNAV" directory generation, it may be to perform the reproduction process of the video information using a common reproduction control information. For this reason, the common playback control information is generated only when the recording formats of the media recording / playback apparatus 10 and the first digital video camera 20 are different, but not only when the recording formats are different but also when the recording formats are the same. May also be generated. On the other hand, when the directory corresponding to the video information does not exist or when the “UNAV” directory is not generated (S302: No), the conventional processing is performed (S304).

  In the video information playback process using the common playback control information, a playlist file which is the common playback control information stored in the “UNAV” directory of the common playback control information storage unit 195 is read (S303). In the present embodiment, the “r00001.xfun” file and the “v00002.xfun” file described in the XML format correspond to the playlist file. Note that the video information reproduction process is started after receiving a playlist display instruction from the user, for example.

  Subsequently, the control unit 120 generates a menu screen for selecting a playlist according to the information recorded in the playlist file, and displays the menu screen on the display device 70 via the image output unit 170 (S305). At this time, if representative image information is included in the playlist file, a menu screen including the representative image corresponding to the representative image information is generated.

  Specifically, “r00001.thbf” or the like stored in the “UNAV” directory of the common playback control information storage unit 195, using the playlist identifier and the number included in the thumbnailIndex element in the representative image information. The representative image is acquired by reading the corresponding representative image from the representative image file. Then, the acquired representative image is included in the menu screen. Furthermore, the recording date / time information of the playlist may be included.

  Further, the playlist name in the menu screen can be acquired from the playListName element 703 shown in FIG. The layout for displaying the playlist name and the corresponding representative image is determined in advance. FIG. 11 is a diagram illustrating an example of a menu screen for selecting a playlist displayed on the display device 70. As shown in FIG. 11, the menu screen includes a DVD title name, a representative image for each playlist of video data recorded on the DVD, a playlist name (Title), a recording date and time (Date), and the like. Is displayed.

When a playlist selection is received from the user via the menu screen (S305), playback of the selected playlist is executed (S306). The play list is reproduced according to the play item information described in the playItem element 701 included in the playList element 704 shown in FIG. That is, when information included in the refToFileName element, the inTime element, and the outTime element is sent to the reproduction processing unit 150, the reproduction processing unit 150 displays “VR_MOVIE.VRO” recorded on the DVD 30 loaded in the first digital video camera 20. Read out the corresponding playback section in the video data such as a file. Then, sequentially decodes the video data, via the image output unit 170 by outputting to the display device 70, the video information is reproduced.

  Further, when the user selects a playlist on the menu screen, the representative images and scene names of scenes (chapters) constituting the playlist may be displayed in a menu format. In this case, when the user selects a specific scene from the menu screen, the playback of the video data operates to start playback from the point described by the corresponding mark element. Since the user can perform the cue playback of the scene in the menu format, the convenience of the media recording / playback apparatus 10 is improved.

Even when the media recording / reproducing apparatus 10 is connected to the second digital video camera 50, the common recording stored in the common reproduction control information storage unit 195 is the same as the video information stored in the first digital video camera 20. Using the control information, playlist display, playback control, and the like can be performed . Therefore, the user can be performed and video information stored in the first digital video camera 20 in the same operation, the reproduction of the video information stored in the second digital video camera 50.

Thus, according to the media recording and reproducing apparatus 10 of the present embodiment, since the different video data of the recorded recording formats in different devices, it can be reproduced by using a common reproduction control information of a general-purpose format and record, the user The convenience of will increase.

In the above example, the common playback control information is stored in the common playback control information storage unit 195 of the media recording / playback apparatus 10, but the DVD 30 or the second digital loaded in the first digital video camera 20 is used. A “UNAV” directory may be created in the HDD 60 loaded in the video camera 50 to record the common playback control information. FIG. 12 shows the directory / file structure when the “UNAV” directory is created in the “DVD_RTAV” directory of the DVD 30 loaded in the first digital video camera 20 and the common playback control information is recorded. In this case, the media recording / reproducing apparatus 10 can perform creation of a menu screen, reproduction processing according to the playlist, and the like with reference to the common reproduction control information stored in the “UNAV” directory of the DVD 30.

  In the above example, the video recording / reproducing apparatus of the present invention has been described as being configured by hardware in a block diagram. However, the present invention is not limited to this, and the CPU executes the program to execute the program of the present invention. Of course, the video recording / reproducing apparatus may be configured as software.

DESCRIPTION OF SYMBOLS 1 ... Video recording / reproducing system, 10 ... Media recording / reproducing apparatus, 20 ... 1st digital video camera, 30 ... DVD disk, 40 ... USB cable, 50 ... 2nd digital video camera, 60 ... HDD, 70 ... Display apparatus, 110 ... Communication unit, 120 ... Control unit, 130 ... Operation receiving unit, 140 ... Disk management unit, 145 ... HDD, 150 ... Reproduction processing unit, 160 ... Image processing unit, 170 ... Image output unit, 180 ... Recording format discrimination unit, 190 ... Common playback control information processing unit, 195 ... Common playback control information storage unit, 210 ... Shooting unit, 220 ... Recording / playback unit, 230 ... Communication unit, 510 ... Shooting unit, 520 ... Recording / playback unit, 530 ... Communication unit

Claims (7)

A communication unit for communicating with an external device that stores image information including the recording format-specific individual playback control information of the video data and video data,
A recording format determination means for determining whether the recording format of the video data stored in the external device is any one of the predetermined recording formats ;
When it is determined that the recording format of the video data stored in the external device is the predetermined recording format, the individual reproduction control information is acquired from the external device based on the determined recording format, Common reproduction control information generating means for generating common reproduction control information obtained by converting the acquired individual reproduction control information into a general-purpose format independent of any of the predetermined recording formats;
Recording means for recording the generated common reproduction control information in a storage area;
Reproduction processing means for performing reproduction processing of video data stored in the external device with reference to the common reproduction control information recorded in the storage area;
Video recording and reproducing apparatus characterized by Ru with a. Before type recording means, if the contain information that refers to a still image to the individual playback control information, and records in the storage area to generate the still image from the image data, to the common reproduction control information video recording and reproducing apparatus according to claim 1, characterized in the inclusion of information referring to the still image form raw. Before Symbol Common reproduction control information, the video recording and reproducing apparatus according to claim 1 or 2, characterized in that recorded in a predetermined page description language. The front Symbol common reproduction control information, information indicating a reproduction order of the unit video obtained by dividing the image data is included one or a plurality,
The video recording / reproducing apparatus according to claim 1 , further comprising a control unit that generates an image for receiving selection of information indicating the reproduction order. Before term memory area, the video recording and reproducing apparatus according to claim 1, which is a storage area in the external device. And performing communication with an external device that stores image information including the recording format-specific individual playback control information of the video data and video data,
Determining whether the recording format of the video data stored in the external device is any one of the predetermined recording formats ;
When the recording format of the video data stored in the external device is determined to be the predetermined recording format, the individual reproduction control information is acquired from the external device based on the determined recording format, and acquired. a step of the individual reproduction control information, generates a common reproduction control information converted into the general-purpose format that does not depend on any of the predetermined recording format,
Recording the generated common reproduction control information in a storage area;
Referring to the common playback control information recorded in the storage area, and performing playback processing of video data stored in the external device;
Video recording and reproducing method characterized by comprising a. On the computer,
And performing communication with an external device that stores image information including the recording format-specific individual playback control information of the video data and video data,
Determining whether the recording format of the video data stored in the external device is any one of the predetermined recording formats ;
When the recording format of the video data stored in the external device is determined to be the predetermined recording format, the individual reproduction control information is acquired from the external device based on the determined recording format, and acquired. a step of the individual reproduction control information, generates a common reproduction control information converted into the general-purpose format that does not depend on any of the predetermined recording format,
Recording the generated common reproduction control information in a storage area;
Referring to the common playback control information recorded in the storage area, and performing playback processing of video data stored in the external device;
Video recording and reproducing program for execution.