JP5299076B2 - Video recording apparatus, video recording / reproducing apparatus, video recording method, and video recording / reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance convenience in copying video data between different equipment. <P>SOLUTION: A media recording and playback device includes: a communication section for inputting video information including video data and inherent playback control information inherent to a recording format of the video data; a recording format discriminating section for discriminating the recording format of the video data; a common playback control information processing section for reading the inherent playback control information on the basis of the discriminated recording format and generating common playback control information obtained by converting the read inherent playback control information into a generic format that does not depend on the recording format; and a disk management section for recording the video information in a directory corresponding to the discriminated recording format of a recording medium and recording the common playback control information in a predetermined directory in the directory of the recording medium. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a video recording apparatus, a video recording / reproducing apparatus, a video recording method, and a video recording / reproducing method.

As described in Patent Document 1, it has been widely carried out to copy the video data between different devices for backup and dubbing. Currently, there are a wide variety of recording formats of video data, and various methods are used according to 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 a device that uses a DVD as a recording medium uses a DVD-ROM format, a DVD-VR format, or the like depending on the device.

Japanese Patent Laid-Open No. 2002-6979

Generally, video data is accompanied by unique playback control information that is playback control information specific to a recording format for playing back video data. Therefore, when performing a copy of the image data needs to be copied also fit specific reproduction control information in addition to video data.

  However, when video data is copied between different devices, if the recording formats are different, the video data and the inherent reproduction control information cannot be reproduced at the copy destination simply by copying them as they are.

Therefore, when copying between different devices of standards must be carried out copy on converting the entire image data and specific reproduction control information of the copy destination recording format, it takes time and effort It will be. In particular, the recording format since it often depends on the recording medium, this problem when copying between different recording medium is remarkable. At this time, since the video data after the recording format conversion is recorded in the copy destination, the data in the original recording format is not backed up. Furthermore, since the specific reproduction control information differs depending on the recording format standard, there is a problem that the operational feeling when reproducing the copied video data also varies. Therefore, an object of the present invention is to improve convenience when copying video data between different devices.

In order to solve the above problems, a video recording apparatus according to the first aspect of the present invention includes video information input means for inputting video information including image data and unique reproduction control information specific to the recording format of the video data, Information relating to a plurality of recording formats in the video information is registered in advance, and recording format discrimination means for discriminating which of the plurality of recording formats is the video information input by the video information input means; the recording format wherein acquires the specific reproduction control information included in the video information in accordance with the recording format determined by the determining means, does not depend acquired the unique reproduction control information in any of said plurality of recording formats generic Common to generate common playback control information converted to format Raw control information generating means, the recording medium, to create a first directory corresponding to the determined said recording format by the recording format discrimination unit, and records the image information in the first directory, the second create a second directory in one directory, and a recording unit that records the common reproduction control information to the second directory.

Here, the common reproduction control information generation means further generates comprehensive common reproduction control information for referring to the video data included in the video information recorded on the recording medium, and the recording means The general common reproduction control information may be recorded in the second directory.

In order to solve the above-mentioned problem, a video recording / playback apparatus according to a second aspect of the present invention includes video information input means for inputting video information including video data and unique playback control information specific to the recording format of the video data. Recording format discrimination means for preliminarily registering information on a plurality of recording formats in the video information and determining which of the plurality of recording formats is the video information input by the video information input means When the recording format wherein acquires the specific reproduction control information included in the video information in accordance with the recording format determined by the determining means, does not depend acquired the unique reproduction control information in any of said plurality of recording formats Generate common playback control information converted to a general-purpose format Common reproduction control information generation unit, to the recording medium, to create a first directory in response to by said recording format determined by the recording format discrimination unit, and records the image information in the first directory, the the second directory created in the first directory, the recording means for the common reproduction control information to the second directory serial to record, in accordance with the common playback control information, the corresponding reproducing means for reproducing the video data and, equipped with a.

Here, the common reproduction control information processing means generates reproduction information for continuously referring to a part of video data recorded on the recording medium based on a user instruction, and the recording means The reproduction information may be recorded in the second directory, and the reproduction unit may continuously reproduce a part of the video data according to the reproduction information and the common reproduction control information.

In order to solve the above problem, a video recording method according to a third aspect of the present invention includes a step of inputting video information including video data and unique reproduction control information specific to a recording format of the video data, and the video information Information relating to a plurality of recording formats is registered in advance, and the video information input by the video information input means is discriminated from which of the plurality of recording formats, and the discriminated recording format Obtaining the unique reproduction control information included in the video information according to the method, and generating the common reproduction control information obtained by converting the obtained unique reproduction control information into a general-purpose format independent of any of the plurality of recording formats; , the recording medium, first in accordance with the recording format is determined 1 Create a directory, and records the image information in the first directory, the second directory created within a first directory and the common reproduction control information recorded in the second directory step And including .

In order to solve the above problem, a video recording / playback method according to a fourth aspect of the present invention includes a step of inputting video information including video data and unique playback control information specific to a recording format of the video data; Information relating to a plurality of recording formats in the information is registered in advance, and the step of determining which of the plurality of recording formats the video information input by the video information input means is, and the determined recording Acquiring the specific reproduction control information included in the video information according to a format, and generating common reproduction control information obtained by converting the acquired specific reproduction control information into a general-purpose format independent of any of the plurality of recording formats If, on the recording medium, according to the judgment the recording format Create a directory, and records the image information in the first directory, create a second directory in the first directory, the common reproduction control information records the second directory a step of, in accordance with the common playback control information includes a playback step of playing back the corresponding video data.

  According to the present invention, convenience when copying video data between different devices is enhanced.

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 copying video information recorded on a DVD disc loaded in a digital video camera to the HDD by the media recording / reproducing 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 HDD in the state which the copy process of the video information of 1st Example was complete | finished. 10 is a flowchart for explaining reproduction of video information stored in an HDD in a media recording / reproducing apparatus. It is a figure which shows the directory / file structure based on SD-VIDEO specification. It is a figure which shows the directory / file structure of HDD in the state which the copy process of the video information of 2nd Example was complete | finished. It is a flowchart explaining the production | generation / update process of comprehensive reproduction | regeneration control information. It is a figure which shows an example of the produced | generated comprehensive reproduction | regeneration control information. It is a figure which shows the directory / file structure of HDD in the state where the "UNAVEX" directory was created and the comprehensive reproduction | regeneration control information was stored. It is a flowchart explaining the process which reproduces | regenerates video information based on comprehensive reproduction | regeneration control information. It is a figure which shows an example of the menu screen of video information. It is a figure which shows an example of a play list display screen. It is a flowchart explaining the creation process of a general user playlist. It is a figure which shows the directory / file structure of HDD145 after a comprehensive user play list storage. It is a figure which shows an example of "v00001.xfun" which is a comprehensive user play list. It is a figure which shows an example of updated "extent.xfun". It is a figure which shows an example of the menu screen for selecting a comprehensive user play list. It is a figure which shows an example of the comprehensive user play list which continuously reproduces a part of video data file. It is a figure which shows the directory / file structure of HDD at the time of using the directory name which attached | subjected the identification number.

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 accompanied by playback control information (navigation information) in which information necessary for playing back the video data is recorded, and is inherent playback control information specific to the recording format. Hereinafter, these are collectively referred to as video information. In the present embodiment, for example, 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, for example, 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 to this, and may be a semiconductor memory, a BD, or the like. Further, the media recording / reproducing apparatus 10 has a function of copying and moving video information recorded on the recording medium of the first digital video camera 20 or the second digital video camera 50. In the following description, a description will be given by copying. At this time, the video information recorded on the DVD is copied as it is, and then the video data included in the video information is playback control information for general playback without depending on the recording format. Add playback control information.

  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 is, for example, an instruction to copy video data from the connected first digital video camera 20, an instruction to reproduce video data or a playlist stored in the HDD 145, a menu selection operation, or 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 recorded on the HDD 145. Specifically, processing such as decoding and seeking of video data is performed with reference to reproduction control information attached to the video data. 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 determination unit 180 performs a process of determining 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 reproduction control information processing unit 190 generates common format common reproduction control information based on the unique reproduction control information specific to the recording format included in the video information. Here, the common reproduction control information is reproduction control information obtained by converting unique 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 performing the reproduction of the video data by using the common reproduction control information of a general-purpose format, regardless of the recording format of the video data, it becomes possible to reproduce the video data using a common compression method for general purposes. For this reason, the common reproduction control information processing unit 190 is configured to be able to interpret the contents of the specific reproduction control information for each recording format that can be discriminated by the recording format discrimination 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 .

  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. 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 / playback unit 520 performs processing for recording the video data input from the photographing unit 510 on the HDD 60 according to the recording format of SD-VIDEO. Further, under the control of the media recording and reproducing apparatus 10 reproduces the video information recorded in the 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.
[First embodiment]
Next, a description will be given of a first embodiment of the video recording / reproducing system having the above configuration. In the first embodiment, the media recording / reproducing apparatus 10 copies the video information recorded on the DVD disk 30 loaded in the first digital video camera 20 to the HDD 145, and reproduces the copied video information. Will be described.

  First, a process in which the media recording / reproducing apparatus 10 copies the video information recorded on the DVD disk 30 loaded in the first digital video camera 20 to the HDD 145 will be described with reference to the flowchart of FIG. In general, video information includes video data and unique reproduction control information specific to a recording format, which is control information for reproducing the video data. The video data is compressed by a predetermined encoding method such as MPEG-2 and stored in a predetermined directory as one or a plurality of files. Further, 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, it performs determination of the recording format, or examine the directory / file structure of a DVD disc 30, the presence or absence of a predetermined file, the name, with often a useful examine the contents 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 unique playback control information in the DVD-VR standard, is described in accordance with 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), the following video information copy process is performed . Note that the video information copy process starts after receiving a start instruction from the user, for example.

  In the video information copy process, the control unit 120 instructs the disk management unit 140 to build the same directory structure on the HDD 145 as the DVD disk 30, and the disk management unit 140 stores the same information on the HDD 145 as the DVD disk 30. Is created (S103).

  Subsequently, the control unit 120 instructs the disk management unit 140 to copy the file stored in the DVD disk 30 to the HDD 145, and the disk management unit 140 executes (S104). As a result, the contents of the DVD disk 30 are copied to the HDD 145, and the directory / file structure is the same as that of the DVD disk 30.

Then, the control unit 120 instructs the common reproduction control information processing unit 190 to add the common reproduction control information to the video information copied to the HDD 145, and the common reproduction control information processing unit 190 adds the common reproduction control information. Processing is performed (S105).

FIG. 5 is a flowchart for describing common reproduction control information addition processing performed by the common reproduction control information processing unit 190. The common reproduction control information processing unit 190 acquires unique reproduction control information from the HDD 145 according to the recording format determined by the recording format determination unit 180 (S201). If the discriminated recording format is the DVD-VR standard as in the first 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 unique reproduction control information (S202). In general, the content of the 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 the representative image information is included in the original unique reproduction control information.

As described above, when the representative image information is included in the original unique 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 unique reproduction control information, in the process of generating the common reproduction control information based on the unique reproduction control information, the prescribed A representative image of resolution is created and stored in the HDD 145, and link information is included in the common playback 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 HDD 145 using the entry point and time information. Then, the reproduction processing unit decodes the 150 searched 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 HDD 145 with a predetermined file name, as will be described later.

When the common reproduction control information processing unit 190 ends the analysis of the unique reproduction control information, the common reproduction control information processing unit 190 generates 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, in accordance with the syntax, etc. of XML format predetermined information elements of the analysis results, to allow Ku transformation that causes loss of 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 the common reproduction control information based on the unique reproduction control information according to the procedure described above, the control unit 120 stores the common reproduction control information in the HDD 145 and copies the video information. The process ends (S206). As for the common reproduction control information, a “UNAV” directory for common reproduction control information is newly created and stored in the directory created in the process (S103).

  When the recording format of the original video information is the DVD-VR standard as in the first embodiment, a “UNAV” directory is created under the “DVD_RTAV” directory, and the generated common playback control information, that is, “ The "general.xfun" file, the "r00001.xfun" file, the "v00002.xfun" file, the "r00001.thbf" file, and the "r00002.thbf" file are stored, and the video information copy process is terminated. FIG. 8 shows the directory / file structure of the HDD 145 in a state in which the video information copy process has been completed.

  As described above, according to the present embodiment, the common reproduction control information is created based on the unique reproduction control information included in the copy source video information, and the video information including the video data and the unique reproduction control information is copied as it is. The common playback control information in the general format is also copied. For this reason, according to the present embodiment, since only the common reproduction control information is added, it is possible to copy the video information as it is without changing the copy source video information.

Next, playback of video information stored in the HDD 145 in the media recording / playback apparatus 10 will be described with reference to the flowchart of FIG. The media recording / reproducing apparatus 10 refers to the HDD 145, and when the “UNAV” directory is generated in the video information directory (S301: Yes), the video using the common reproduction control information described below is used. Performs information reproduction processing.

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 unique 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 “UNAV” directory is not generated in the video information directory (S301: No), the conventional reproduction process is performed (S303).

  In the reproduction process of the video information using the common reproduction control information, a playlist file which is the common reproduction control information stored in the “UNAV” directory is read (S302). 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 (S304). 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, using the playlist identifier and the number included in the thumbnailIndex element in the representative image information, it corresponds from the representative image file such as “r00001.thbf” stored in the “UNAV” directory of the HDD 145. A representative image is acquired by reading the representative image. Then, the acquired representative image is included in the menu screen.

  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.

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 causes the corresponding reproduction section in the video data such as the “VR_MOVIE.VRO” file copied to the HDD 145. Is read. Then, sequentially decodes the video data, via the image output unit 170 by outputting to the display device 70, the reproduction of the video information.

  If a plurality of video information is copied to the HDD 145, the video information is selected by referring to the “general.xfun” file in each “UNAV” directory before displaying the playlist. This menu screen may be generated and displayed. For this reason, in the “general.xfun” file, information related to video information, for example, information such as names and representative images is recorded. Thus, by displaying the video information selection menu screen based on the “general.xfun” file of each video information, the user can easily select the video information.

  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.

As described above, according to the media recording / reproducing apparatus 10 of the present embodiment, the reproduction process can be performed using the common reproduction control information described in the general-purpose format regardless of the recording format of the copy source. Therefore, it becomes possible to perform the reproduction process with a unified operation feeling even between different recording formats, and the convenience for the user is enhanced.

Note that the above reproduction processing is not limited to media reproduction in the media recording / reproducing apparatus 10 that has performed copying. For example, the video information media recording and reproducing apparatus 10, which was copy contains the "UNAV" directory, further hard copy to a portable recording medium such as a DVD disc, the recording medium, which can be interpreted by a common playback control information In the case of reproduction by another media reproduction apparatus, the video information can be reproduced by the same procedure as the process shown in FIG.
[Second Embodiment]
Next, a description will be given of a second embodiment of the video recording / reproducing system having the above configuration. In the second embodiment, after the media recording / reproducing apparatus 10 has copied the video information recorded on the DVD disk 30 loaded in the first digital video camera 20 to the HDD 145 according to the procedure shown in the first embodiment, 2 Processing for copying video information recorded in the HDD 60 loaded in the digital video camera 50 to the HDD 145 will be described. Therefore, the HDD 145 already has the directory / file structure shown in FIG. That is, the second embodiment is a process of copying video information having a recording format different from that of the already copied video information to the HDD 145.

Again, basically, it is possible to perform the copying of the video information along the flowchart shown in FIG. That is, when the second digital video camera 50 is connected to the media recording / reproducing apparatus 10 via the USB cable 40, communication is started according to the USB protocol. Recording format discrimination unit 180 of the media recording and reproducing apparatus 10 determines a recording format of the video information recorded in HDD60 by acquiring a directory / file structure of the HDD60 loaded in the second digital video camera 50 ( S101).

  In this embodiment, since the video information of the HDD 60 is recorded in the recording format of the SD-VIDEO standard, an outline of the recording format of the SD-VIDEO standard will be described. FIG. 10 is a diagram showing a directory / file structure based on the SD-VIDEO standard. As shown in the figure, in the SD-VIDEO standard, a fixed name “SD_VIDEO” directory is set in the root directory. In the “SD_VIDEO” directory, an “MGR_INFO” directory in which a management file is stored, an “MOD file that is recorded and recorded audio / video information”, and an “PRGxxx” directory (xxx) in which an MOI file that is recording / playback information is stored. Is a three-digit decimal number excluding 000).

  The “MGR_INFO” directory includes an “MGR_DATA” file that manages the entire “SD_VIDEO” directory, a “PRG_MGR” file that manages the “PRGxxx” directory, and a “PLST_MGR” file that registers and manages playlists created by the user.

Under each "PRGxxx" directory, there is one is "PRGxxx.PGI" file that manages the PRG directory, further the stream data has been coded I and an audio / video taken by the user to the MPEG scheme There are stored “MOVnnn.MOD” files (nnn is a three-digit decimal number excluding 000) and “MOVnnn.MOD” files containing the recording / playback information. The MOD file and the MOI file have a three-digit number and correspond one-to-one. Up to 99 sets can be recorded in the “PRGxxx” directory. If the number exceeds 99 sets, a new PRG directory is created, and the MOI file associated with the photographed MOD file is recorded under the new PRG directory.

  The file excluding the MOD file of the stream data obtained by encoding the audio / video includes unique reproduction control information (navigation information) for reproducing the contents of the MOD file by a user's desired reproduction method. The specific playback control information has a detailed description format defined by the SD-VIDEO standard. Similar to the DVD-VR standard, “general media information” “stream information” “playlist information” “time map information” “representative” Image information "is included.

  “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. The MOI file corresponding to each MOD file, “PRGxxx.PGI”, and “PRG_MGR file” are recorded in duplicate.

  “Playlist information” is information for reproducing a scene (chapter) obtained by dividing video data in an arbitrary order. A scene is expressed as MO (Media Object) information that holds a start time and an end time, and the playlist information is composed of one or more pieces of MO information. Similar to the DVD-VR standard, a plurality of playlist information can be recorded and recorded in the “PLST_MGR” file in order to enable reproduction by combining 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 the SD-VIDEO standard, the time map information records the elapsed time of video and the recording position of stream data corresponding to this in a tabular format. The time map information is recorded in the MOI file that has a one-to-one correspondence with the stream data.

  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. In the SD-VIDEO standard, the representative image information records specific time information of video and takes the same expression format as the time map information. Since it is used to display a program or playlist for selection on the playback menu, it is recorded in the “PRG_MGR”, “PRGxxx.PGI”, and “PLST_MGR” files.

  After it is determined that the recording format of the video information recorded in the HDD 60 is the SD-VIDEO standard, an “SD_VIDEO” directory is created (S103), and the file is copied (S104). Then, common reproduction control information is generated according to the procedure shown in FIG. 5, a “UNAV” directory is created under the “SD_VIDEO” directory, and the generated common reproduction control information is stored (S105).

  In the generation of the common playback control information, the “MGR_DATA” file is acquired from the “MGR_INFO” directory under the “SD_VIDEO” directory, and the entire information under the “SD_VIDEO” directory is acquired. Also, playlist information is acquired from the “PRG_MGR” and “PLST_MGR” files. As for the playlist information, the program and playlist in the SD-VIDEO standard recording format correspond to the actual playlist and the user playlist, and the meaning of the playlist in the DVD_RTAV standard recording format is made common with the playlist. Defined.

  Each playlist includes one or more MO information, each MO 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, MO period, and entry point are described in milliseconds. The common reproduction control information processing unit 190 performs conversion processing from the unique reproduction control information to the common reproduction control information based on the analysis result.

  In the second embodiment, information related to the entire disc is recorded in “general.xfun” of the XML file, information related to the actual playlist is recorded in “r00001.xfun”, and information related to the user playlist is “ v00002.xfun ".

When representative image information is included in the individual reproduction control information, a corresponding MOD file is searched from the HDD 145 using the entry point and time information. Then, the reproduction processing unit 150 decodes the searched MOD file 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. The representative image corresponding to the playlist is stored in a thbf file having the same playlist name.

  When the recording format of the original video information is the SD-VIDEO standard as in the second embodiment, a “UNAV” directory is created under the “SD_VIDEO” directory, and the generated common playback control information is stored. FIG. 11 shows the directory / file structure of the HDD 145 in a state where the video information copy process of the second embodiment is completed.

  As shown in the figure, in the root directory, in addition to the “DVD_RTAV” directory created in the first embodiment, an “SD_VIDEO” directory having a different recording format is created. Control information is stored.

The video information stored in the “SD_VIDEO” directory can be reproduced according to the procedure shown in the first embodiment by using the common reproduction control information. Accordingly, even if the video information has a different recording format at the copy source, the video can be reproduced by the same operation.
[Third embodiment]
Next, a description will be given of a third embodiment of the video recording / reproducing system having the above configuration. In the third embodiment, the media recording / reproducing apparatus 10 stores the video information recorded in the HDD 60 loaded in the second digital video camera 50 in the procedure shown in the second embodiment after the processing of the first embodiment. A process for generating comprehensive reproduction control information after copying will be described. For this reason, it is assumed that the HDD 145 already has the directory / file structure shown in FIG.

  The comprehensive playback control information generated in the third embodiment is information for making it easy for the user to select video information when a plurality of video information of different copy sources is stored in the HDD 145.

  It is assumed that the comprehensive playback control information is created under the “UNAVEEX” directory by creating a “UNAVEX” directory in the same directory as the directory in which a plurality of video information is recorded in the HDD 145.

FIG. 12 is a flowchart for explaining the generation / update processing of the total reproduction control information. This process can be performed after a plurality of pieces of video information are stored in the HDD 145. For example, so as subsequently performed after the processing shown in the second embodiment. However, it may be performed when the first video information is stored in the HDD 145 or may be performed based on a generation instruction from the user.

  In the general reproduction control information generation / update process, first, the HDD 145 is referred to, and it is determined whether or not the “UNAVEX” directory has already been created (S401). If it has not been created (S401: No), a “UNAVEX” directory is created in the same directory as the directory in which a plurality of video information is recorded in the HDD 145 (S402).

  Then, the unique information of the video information recorded in the HDD 145 is acquired (S403). The unique information of the video information can be a directory name, date / time information of the last recording, or the like. The date / time information and the like of the final recording can be acquired by referring to and analyzing the common reproduction control information of the video information.

  Further, option information is acquired (S404). Here, the option information is information other than the directory name, the date / time information of the last recording, etc. For example, the representative image displayed in the playback menu, title name, title details, etc. to express the contents of each video information briefly. It can be information etc. These can be acquired by referring to and analyzing the common reproduction control information of the video information. For this reason, when the common reproduction control information is generated, these pieces of information are also converted and added. Note that the link information to the common reproduction control information of the video information may be obtained without obtaining the content of the common reproduction control information itself. Furthermore, an input such as a title name from the user may be accepted. However, option information may not be included, and option information acquisition processing may be omitted.

  Then, comprehensive reproduction control information is created based on the acquired unique information and option information (S405). If the comprehensive reproduction control information has already been created, it is updated based on the acquired unique information and option information. The general reproduction control information is described in a predetermined page description language, for example, an XML format, like the common reproduction control information.

  FIG. 13 is a diagram illustrating an example of the generated total reproduction control information. The comprehensive playback control information includes a backup element 1301 representing the directory information of the video information recorded in the HDD 145. The backup element 1301 is provided corresponding to the recorded video information. In the example of this figure, the directories “DVD_RTAV” and “SD_VIDEO” are represented by the specDirName element in each backup element 1301.

  In the total playback control information, the recordedTime element 1302 represents the last update date and time of the directory, the thumbnailIndex element 1303 represents the reference information of the representative image, the mediaTitleName element 1304 represents the title name of each video information, and the mediaTitleDetail element 1305 Represents the detailed description of each video information.

  In the third embodiment, the comprehensive playback control information related to the entire video information is recorded as an “extent.xfun” file, and the comprehensive playback control information related to the representative image is recorded as an “extent.thbf” file. Similar to the common reproduction control information, representative images are continuously recorded in the “extent.thbf” file.

FIG. 14 is a diagram showing a directory / file structure of the HDD 145 in a state in which the “UNAVEX” directory is created and the total reproduction control information is stored. As shown in this figure, the “UNAVEX” directory storing the “extent.xfun” file and the “extent.thbf” file, which are general playback control information, is created in the same hierarchy as the “DVD_RTAV” directory and the “SD_VIDEO” directory. The
[Fourth embodiment]
Next, a description will be given of a fourth embodiment of the video recording / reproducing system having the above structure. In the fourth embodiment, a process in which the media recording / reproducing apparatus 10 reproduces video information based on the general reproduction control information created in the third embodiment will be described. For this reason, it is assumed that the HDD 145 already has the directory / file structure shown in FIG.

FIG. 15 is a flowchart for describing processing for reproducing video information based on the comprehensive reproduction control information. Upon receiving a video information playback instruction from the user, the media recording / playback apparatus 10 refers to the HDD 145 to determine whether or not a “UNAVEX” directory has been generated in the root directory (S501). When the “UNAVEX” directory has not been generated (S501: No), the processing after the processing (S301) shown in FIG. 9 is performed , and reproduction processing in units of video information is performed .

  When the “UNAVEX” directory has been generated (S501: Yes), the general reproduction control information is read from the “UNAVEX” directory (S502). In the case of the present embodiment, the comprehensive reproduction control information is an “extent.xfun” file described in XML.

  Subsequently, the control unit 120 analyzes the comprehensive reproduction control information, generates a menu image that displays information related to each video information stored in the HDD 145 in a menu format, and displays the menu image on the display device 70 (S503). Specifically, a menu for selecting the video information by extracting the directory name and recording date / time information of each video information with reference to the specDirName element and the recordedTime element 1302 in each backup element 1301 shown in FIG. Generate a screen. If the thumbnailIndex element 1303 is included, the representative image indicated by the thumbnailIndex element 1303 is extracted from the “extent.thbf” file and included in the menu screen. The layout of the video information menu screen is determined in advance.

  FIG. 16 is a diagram illustrating an example of a video information menu screen. This figure is an example in which video information titled “DVDXX” recorded in the DVD_RTAV standard and video information titled “SDYYY” recorded in the SD_VIDEO standard are recorded on the HDD 145. A menu screen including a title, a recording format, a recording date and time, and a representative image as required is displayed. The user can select any video information. At this time, detailed information of the video information may be displayed according to the user's operation or the like.

When selection of video information is received from the user on this menu screen (S504), a playlist selection process included in the selected video information is performed according to the processing after the processing (S302) shown in FIG. FIG. 17 is a diagram showing an example of a playlist display screen displayed when the title “DVDXX” is selected on the video information menu screen shown in FIG. In the example of this figure, the video information titled “DVDXX” includes three playlists “PL_D_1”, “PL_D_2”, and “PL_D_3”, and each playlist is displayed in a selectable state. Yes. An icon for returning to the video information menu screen shown in FIG. 16 is also included. When one playlist is selected, it reproduces the video information in accordance with the procedure of reproducing process shown in the first embodiment.
[Fifth embodiment]
Next, a description will be given of a fifth embodiment of the video recording / reproducing system having the above structure. In the fifth embodiment, a description will be given of processing in which the media recording / reproducing apparatus 10 continuously reproduces a plurality of pieces of video information having different recording formats at the copy source. Assume that the HDD 145 already has the directory / file structure shown in FIG.

  In order to continuously reproduce different video information recorded in different directories, it is necessary to specify the video information to be reproduced and the reproduction order. Therefore, the media recording / reproducing apparatus 10 receives the designation of the video information and the reproduction order from the user, creates a comprehensive user playlist, and adds it as an XML format file under the UNAVEX directory.

  FIG. 18 is a flowchart for explaining a creation process of a general user playlist for continuously reproducing video information. The general user playlist creation process starts by receiving a user playlist creation process instruction from the user (S601). A general user playlist creation processing instruction can be received via the operation receiving unit 130.

  In response to the received instruction, the control unit 120 displays a comprehensive playlist editing screen on the display device 70 (S602). The general user playlist editing screen accesses the UNAVEX directory of the HDD 145, reads “extent.xfun”, which is general playback control information, acquires information on video information and representative image information, and follows a predetermined layout. Can be generated.

A comprehensive user play list edit screen, the user specifies the image information, and playlists to and to be continuously played back, it is possible to perform the selection instruction of the playback section. At this time, the media recording / reproducing apparatus 10 accesses the “UNAV” directory of the video information to be selected, and acquires information on the playlist and the reproduction section. Then, based on the acquired information, a playlist and a menu screen for accepting selection of a playback section are generated to accept selection from the user (S603). This selection can be accepted over a plurality of pieces of video information by moving up and down the directory hierarchy.

  For example, there are two playlists: an actual playlist “r00001.xfun” in the “UNAV” directory under the “DVD_RTAV” directory and an actual playlist “r00001.xfun” in the “UNAV” directory under the “SD_VIDEO” directory. You can choose.

  When the user instructs the end of the general user playlist editing (S604: Yes), the XML file of the general user playlist is stored in the “UNAVEX” directory of the HDD 145 (S605). The XML file of the general user playlist is stored with a name such as “v00001.xfun”. Also, a representative image data file in which representative images related to “v00001.xfun” are collected is also named “v00001.thbf” and stored in the “UNAVEX” directory. FIG. 19 is a diagram showing a directory / file structure of the HDD 145 after storing the general user playlist.

  FIG. 20 shows an example of “v00001.xfun”, which is a general user playlist. In this example, the playlist selected by the user is recorded as a playItem element 2001, and the name of the playlist is recorded as a refToPlayListName element 2002. The stored directory name is recorded as a refToSpecDirName element 2003.

  Note that the title name of the general user playlist may be received from the user so that the user can easily see and grasp the title of the general user playlist from the menu screen. Further, if necessary, a representative image related to the general user playlist created here can be created in the same manner as the representative image acquisition and creation procedures so far.

  When the media user play list is stored in the HDD 145, the media recording / playback apparatus 10 updates the overall playback control information (S606). That is, the stored general user playlist is registered in “extent.xfun”, which is general reproduction control information. FIG. 21 is a diagram illustrating an example of the updated “extent.xfun”. In the example of this figure, the general user playlist name “v00001” is recorded as the playListFileName element 2102 in the playList element 2101.

Next, processing in which the media recording / reproducing apparatus 10 continuously reproduces a plurality of pieces of video information having different recording formats at the copy source based on the general user playlist will be described. The media recording / reproducing apparatus 10 accesses the “UNAVEX” directory in accordance with a general user playlist display instruction from the user, and reads “extent.xfun”, which is general reproduction control information. Then, based on “extent.xfun”, a menu screen for selecting the general user playlist is generated and displayed on the display device 70. Generating a menu screen for selecting the overall user play list may be performed similarly to the menu screen creation procedure described above. FIG. 22 shows an example of a menu screen for selecting a general user playlist.

  When the user selects a general user playlist to be played back, the media recording / reproducing apparatus 10 accesses the “UNAVEX” directory of the HDD 145 and changes the content of the selected general user playlist, for example, “v00001.xfun”. Therefore, the “UNAV” directory of the designated video information directory is accessed, and the designated playlist and the like are reproduced according to the reproduction order.

  Specifically, the “UNAV” directory under the directory indicated by the refToSpecDirName element 2003 included in the playItem element 2001 described in the playList element in the general user playlist shown in FIG. 20 is accessed, and the refToPlayListName element 2002 is accessed. Play the playlist indicated by.

  As a result, in the example of this figure, the actual playlist “r00001.xfun” in the “UNAV” directory under the “DVD_RTAV” directory and the actual playlist “r00001.xfun” in the “UNAV” directory under the “SD_VIDEO” directory are displayed. "Are sequentially reproduced.

  In the reproduction of the actual playlist, as described above, the information included in the refToFileName element, the inTime element, and the outTime element is changed according to the play item information described in the playItem element 701 included in the playList element 704 shown in FIG. The data is output to the reproduction processing unit 150. Then, the playback processing unit 150 sends video data such as VR_MOVIE. A predetermined playback section in the VRO file is read, and the video data is decoded and output to the display device 70.

  As described above, in the fifth embodiment, the process of continuously reproducing a playlist of a plurality of pieces of video information with different recording formats at the copy source using the general user playlist has been described. It is also possible to continuously reproduce a part of the video data file using the information. In this embodiment, the time information is indicated by the number of video frames. An example is shown in FIG. FIG. 23 shows an example of a general user playlist that defines continuous playback of a part of video data in the “DVD_RTAV” directory and a user playlist in the “UNAV” directory under the “SD_VIDEO” directory. It is.

  When the selection of the general user playlist as shown in FIG. 23 is received from the user, the control unit 120 reads the user playlist file shown in FIG. 23 in the “UNAVEX” directory of the HDD 145 and describes it in the playList element 2301. The played playItem elements 2302 are reproduced in order.

In the first playItem element 2302a of the number attribute is "0", the region determined by the time information is reproduced. For this reason, information included in the refToSpecDirName element 2303a, the refToFileName element 2304a, the inTime element 2305a, and the outTime element 2306a is sent to the reproduction processing unit 150. Then, in accordance with these pieces of information, the playback processing unit 150 reads a playback section defined by time information in the video data from the HDD 145, decodes the video data, and outputs the decoded video data to the display device 70.

In the next playItem element 2302b whose number attribute is “1”, reproduction by a play list is performed . Therefore, the playlist indicated by the refToPlayListName element 2308b in the “UNAV” directory under the directory indicated by the refToSpecDirName element 2307b, in this example, “v00002.xfun” in the “UNAV” directory of the “SD_VIDEO” directory. The information recorded in is sent to the reproduction processing unit 150. The reproduction processing unit 150 reads out video data from the HDD 145 according to these pieces of information, decodes the video data, and outputs the decoded video data to the display device 70.
[Sixth embodiment]
Next, a description will be given of a sixth embodiment of the video recording / reproducing system having the above structure. In the sixth embodiment, management of a directory name when the media recording / reproducing apparatus 10 copies a plurality of pieces of video information of the same recording format will be described. In the above example, the name of the directory for storing the video information corresponds to the recording format. For example, if the recording format is video information of the DVD-VR standard, it is stored in the “DVD_VR” directory, and if the recording format is video information of the SD-VIDEO standard, it is stored in “SD_VIDEO”.

  For this reason, when storing video information of the same recording format, there is a possibility that directory names are duplicated and the respective video information cannot be identified. Therefore, in the sixth embodiment, when a directory having a name corresponding to the recording format of video information is created, the directory name is a name with an identification number. This makes it possible to identify a directory of video information having the same recording format.

  The identification number can be a # number, for example. In this case, a # number can be added to the end of the directory name corresponding to the recording format of the video information. The identification number may be given when a directory having the same recording format has already been created, or may be given regardless of whether a directory having the same recording format has been created. Note that whether or not a directory having the same recording format has already been created can be determined by referring to, for example, “extent.xfun” in the “UNAVEX” directory. FIG. 24 is a diagram showing a directory / file structure of the HDD when a directory name with an identification number is used.

As described above, in this embodiment, the common playback control information and the like are recorded on the HDD 145 of the media recording / playback apparatus 10, but the recording media of the first digital video camera 20 or the second digital video camera 50 are recorded. Common reproduction control information or the like may be recorded. In this case, by using the common reproduction control information recorded on the recording medium of the first digital video camera 20 or the second digital video camera 50, it is possible to reproduce video information recorded in the respective recording media.

  In the above description of the embodiment, the video recording apparatus and the video recording / reproducing apparatus of the present invention have been described as hardware configurations using block diagrams. However, the present invention is not limited to this, and the CPU executes a program. By doing so, the video recording apparatus and video recording / reproducing apparatus of the present invention may of course be configured in 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 210 ... Shooting unit 220 ... Recording / playback unit 230 ... Communication unit 510 ... Shooting unit 520 ... Recording / playback unit 530 ... Communication unit

Claims (6)

Video information input means for inputting video information including video data and unique playback control information specific to the recording format of the video data;
Information relating to a plurality of recording formats in the video information is registered in advance, and recording format discrimination means for discriminating which of the plurality of recording formats is the video information input by the video information input means; ,
The recording format wherein judged by discrimination means included in the video information in accordance with the recording format to get the specific reproduction control information, general format that does not depend on any acquired the unique reproduction control information of the plurality of recording formats Common reproduction control information generating means for generating the common reproduction control information converted into
A recording medium, to create a first directory in accordance with the recording format is determined by the recording format discrimination unit, and records the image information in the first directory, the second in the first directory 2 create a directory, and recording means for said common play control information recorded in said second directory,
Video recording device characterized by Ru with a. Before Symbol Common reproduction control information generation unit further generates a comprehensive common reproduction control information for referring to the image data included in the video information recorded on the recording medium,
The video recording apparatus according to claim 1, wherein the recording unit records the general common reproduction control information in the second directory. Video information input means for inputting video information including video data and unique playback control information specific to the recording format of the video data;
Information relating to a plurality of recording formats in the video information is registered in advance, and recording format discrimination means for discriminating which of the plurality of recording formats is the video information input by the video information input means; ,
The recording format wherein judged by discrimination means included in the video information in accordance with the recording format to get the specific reproduction control information, general format that does not depend on any acquired the unique reproduction control information of the plurality of recording formats Common reproduction control information generating means for generating the common reproduction control information converted into
A recording medium, to create a first directory in accordance with the recording format is determined by the recording format discrimination unit, and records the image information in the first directory, the second in the first directory 2 create a directory, and recording means for said common play control information recorded in said second directory,
In accordance with the common playback control information, a reproduction means for reproducing the corresponding image data,
Video recording and reproducing apparatus characterized by Ru with a. Before Symbol Common playback control information processing unit generates reproduction information for on the basis of a user instruction, it refers to the portion of the video data recorded on the recording medium continuously,
The recording means records the reproduction information in the second directory;
The video recording / playback apparatus according to claim 3, wherein the playback means continuously plays a part of the video data according to the playback information and the common playback control information. Inputting video information including video data and unique playback control information specific to the recording format of the video data;
Information relating to a plurality of recording formats in the video information is registered in advance, and the video information input by the video information input means determines which of the plurality of recording formats is the recording format ;
Common reproduction control information obtained by acquiring the specific reproduction control information included in the video information according to the determined recording format, and converting the acquired unique reproduction control information into a general-purpose format independent of any of the plurality of recording formats A step of generating
A first directory corresponding to the determined recording format is created on a recording medium, the video information is recorded in the first directory, and a second directory is created in the first directory, a step that records the common reproduction control information to the second directory,
Video recording method, which comprises a. Inputting video information including video data and unique playback control information specific to the recording format of the video data;
Information relating to a plurality of recording formats in the video information is registered in advance, and the video information input by the video information input means determines which of the plurality of recording formats is the recording format ;
Common reproduction control information obtained by acquiring the specific reproduction control information included in the video information according to the determined recording format, and converting the acquired unique reproduction control information into a general-purpose format independent of any of the plurality of recording formats A step of generating
A first directory corresponding to the determined recording format is created on a recording medium, the video information is recorded in the first directory, and a second directory is created in the first directory, a step that records the common reproduction control information to the second directory,
A reproduction step of reproducing the corresponding video data in accordance with the common reproduction control information;
Video recording and reproducing method characterized by comprising a.