JP2010027100A - Information recording device and information recording method - Google Patents

Abstract

Provided is a technique capable of easily confirming which information is stored in which recording medium even when information is backed up from a storage area of an information recording apparatus into a plurality of recording media.
A video camera device includes an HDD that stores a plurality of contents and a content identifier that is assigned to each of the plurality of contents in ascending order and is uniquely identifiable, and a plurality of contents When backups to recording media are executed in ascending order of content identifiers, when the backup is completed or interrupted, the content identifiers associated with the last backup completed content are listed in the backup media list And a CPU 120 that stores information in the HDD 127 as information.
[Selection] Figure 2

Description

  The present invention relates to an information recording apparatus and an information recording method, and more particularly to a technology for backing up content.

  Conventionally, a state where an image including a still image and a moving image recorded in a storage area of an information recording apparatus, for example, a storage area such as a hard disk drive (HDD) such as a digital camera, is backed up to another recording medium is backed up. Since the contents of the medium and the image in the camera are determined by confirmation by human eyes and judgment based on past memories, there is a possibility that they will be erased by mistake.

  For example, in the technology disclosed in Patent Document 1, by holding information on a backed up file, the backed up file can be identified, classified and displayed, or can be easily understood by adding an icon. is doing. In addition, it is proposed that a warning is issued for the deletion operation to prevent an erroneous operation such as data loss due to an unclear determination.

JP 2006-311067 A

  However, in the technique disclosed in Patent Document 1, an attribute is added to the file itself, and all backup files are registered in a list dedicated to backup history, so that a large amount of information is wasted. In addition, when a large amount of data such as an HDD is backed up to a recording medium having a smaller capacity than that of an HDD, such as a CD-R or DVD-R, the data is divided into a plurality of recording media and stored. It is necessary to check which image is contained in the recording medium while replacing the recording medium with a reproducing apparatus.

  The present invention has been made in view of the above problems, and an object of the present invention is to use any recording medium even when backing up information by dividing it into a plurality of recording media from the storage area of the information recording apparatus. The object is to provide a technology that can easily confirm which information is contained.

  In order to achieve the above object, according to an aspect of the present invention, a plurality of contents and a content identifier that is an identifier that can be uniquely identified can be stored in each of the plurality of contents in ascending order. Executes backup to the storage unit and multiple content recording media in ascending order of content identifiers, and associates with the last completed content among the completed backups when the backup is completed or interrupted And a controller that stores the content identifier as backup media list information in a storage unit.

  According to the present invention, even when information is backed up from a storage area of an information recording apparatus by dividing it into a plurality of recording media, it is possible to easily confirm which information is contained in which recording medium.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

<< About the usage pattern of an example of a recording apparatus or a recording / reproducing apparatus >>
First, for easy understanding, a recording apparatus or recording / reproducing apparatus applicable to each embodiment of the present invention will be schematically described.

  A usage pattern of an example of a video camera apparatus 100 as a recording apparatus or a recording / reproducing apparatus to which the present invention is applied will be described with reference to FIG.

In FIG. 1, a video camera apparatus 100 includes a drive device 14 for loading a removable recording medium 15 while incorporating a recording medium 13 in a housing 12.
The recording medium 13 is composed of, for example, a hard disk.

  The recording medium 15 is an optical disc, a magneto-optical disc, a nonvolatile semiconductor memory, or a removable type capable of writing data such as a recordable type DVD (Digital Versatile Disc) or Blu-ray Disc (registered trademark). Various hard disks are considered. It is also conceivable to use a magnetic tape as the recording medium 15.

  Note that the types of the recording medium 13 and the recording medium 15 are not limited to those described above.

  In the above description, the recording medium 13 is built in the housing 12, but the recording medium 13 may be detachable together with the recording medium 15.

  In this video camera apparatus 100, light from a subject is incident on an optical system 11, and this light is received by an image sensor such as a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) image sensor. Light is converted into an electrical signal by photoelectric conversion and subjected to predetermined processing to obtain digital video data. This digital video data is recorded on the recording medium 13, for example. The digital video data recorded on the recording medium 13 can be output to the outside via an output terminal (not shown) or can be displayed on a display element (not shown) included in the video camera device 100.

  The video camera device 100 is configured to transfer digital video data recorded on a recording medium 13 to a drive device 14 and record it on a recording medium 15 loaded in the drive device 14.

  For example, when the recording medium 13 is a hard disk and the recording medium 15 is a recordable DVD, a backup of the digital video data recorded on the recording medium 13 is saved in the recording medium 15 and the recording medium 15 is stored separately.

  FIG. 2 shows an exemplary configuration of a video camera apparatus 100 (information recording apparatus) that can be applied to each embodiment of the invention.

  A CPU (Central Processing Unit) 120 as an example of a control unit controls the entire video camera apparatus 100 using the RAM 121 as a work memory based on program data stored in advance in the ROM 123. The CPU 120 reads program data from the ROM 123 and develops it on the RAM 121 to execute the program.

  In FIG. 2, the CPU 120 and each part constituting the video camera device 100 are shown to be directly connected. However, this is not limited to this example, and each part is connected to a bus via the bus. It is also possible to exchange commands and data.

  The optical lens unit 110 constitutes the optical system 11 described above, and includes a lens system, an aperture adjustment mechanism, a focus adjustment mechanism, a zoom mechanism, a shutter mechanism, and the like for guiding light from a subject to an image pickup device included in the photoelectric conversion unit 111. The light from the subject is collected and incident on the photoelectric conversion unit 111.

  The aperture adjustment mechanism, focus adjustment mechanism, zoom mechanism, and shutter mechanism are controlled by the camera function unit 115 based on the control of the CPU 120.

  The photoelectric conversion unit 111 has an imaging element such as a CCD or a CMOS image sensor, converts light incident through the optical lens unit 110 into an electrical signal by photoelectric conversion, and performs predetermined signal processing as an imaging signal. Output.

  The image signal processing unit 112 is, for example, an imaging signal processing unit that converts an imaging signal output from the photoelectric conversion unit 111 into a digital signal, and a predetermined signal for the digital signal obtained by converting the imaging signal by the imaging signal processing unit. A video signal processing unit that performs processing and converts into baseband digital video data, and a compression encoding unit that compresses and encodes baseband digital video data obtained by the video signal processing unit by a predetermined method.

  The imaging signal processing unit samples, for example, only a signal having image information by a CDS (Correlated Double Sampling) circuit with respect to the imaging signal output from the photoelectric conversion unit 111, removes noise, and performs AGC (Auto Gain Control). ) Adjust the gain with the circuit.

  And it converts into a digital signal by A / D conversion. In addition, the imaging signal processing unit sends information on the imaging signal output from the photoelectric conversion unit 111 to the CPU 120.

  The CPU 120 generates a control signal for controlling the optical lens unit 110 based on this information, and controls the focus adjustment mechanism, the aperture adjustment mechanism, and the like.

  The video signal processing unit performs predetermined signal processing on the digital signal obtained by the imaging signal processing unit.

  For example, the video signal processing unit performs detection type signal processing on the digital signal, and extracts components of each color of R (red), G (green), and B (blue).

  Then, processing such as γ correction and white balance correction is performed based on each extracted color component, and finally, it is output as one baseband digital video data.

  The compression encoding unit compresses and encodes the baseband digital video data output from the video signal processing unit in accordance with, for example, an MPEG2 (Moving Pictures Experts Group 2) system.

  The present invention is not limited to this example. H.264 | AV, or ITU-T (International Telecommunication Union-Telecommunication Standardization Sector) recommendation H.264. It is also possible to use a compression coding method conforming to H.264 or ISO (International Organization for Standardization) / IEC (International Electrotechnical Commission) International Standard 14496-10 (MPEG-4 Part 10) Advanced Video Coding.

  The display unit 114 can perform display based on the digital video data supplied from the image signal processing unit 112 using, for example, an LCD (Liquid Crystal Display) as a display element.

  The display unit 114 is used as a monitor of a captured image during shooting, and can display a playback image during playback.

  The image input / output unit 113 outputs the digital video data output from the image signal processing unit 112 to the outside. Digital video data supplied from outside can also be supplied to the image signal processing unit 112.

  Further, the image input / output unit 113 includes an A / D conversion unit and a D / A conversion unit, and the digital video data output from the image signal processing unit 112 is converted into an analog video signal for output or supplied from the outside. The analog video signal thus converted may be converted into digital video data and supplied to the image signal processing unit 112.

  The audio input / output unit 116 includes audio input / output means such as a microphone and a speaker, and converts external audio into an audio signal or converts an audio signal into audio. The audio input / output unit 116 also includes an audio signal input / output unit.

  The audio processing unit 117 A / D converts the analog audio signal supplied from the audio input / output unit 116 into digital audio data, performs predetermined audio signal processing such as noise removal and sound quality correction, and baseband digital audio data Output as.

  The baseband digital audio data may be compressed and encoded by a predetermined method. The audio processing unit 117 performs predetermined audio signal processing such as sound quality correction and volume adjustment on the supplied digital audio data to perform D / A conversion to an analog audio signal, performs amplification processing, etc. This is supplied to the output unit 116.

  The operation input unit 124 is provided with a predetermined operation element for a user to operate the operation of the video camera apparatus 100, and outputs a control signal corresponding to an operation on the operation element. This control signal is supplied to the CPU 120.

  The CPU 120 controls the operation of each unit of the video camera device 100 by processing a program based on a control signal supplied from the operation input unit 124 in response to a user operation.

  Further, a simple display unit may be provided in the operation input unit 124 to perform a predetermined display regarding the operation of the video camera device 100.

  The controller unit 126 is connected to at least a hard disk 127 corresponding to the recording medium 13 and a drive apparatus 128 corresponding to the drive apparatus 14 described above, and records data by the hard disk 127 and the drive apparatus 128 based on a command from the CPU 120. Control playback.

  For example, based on a command from the CPU 120, the controller unit 126 performs control so that digital video data captured by the image sensor of the photoelectric conversion unit 111 and compressed and encoded by the image signal processing unit 112 is recorded on the hard disk 127. .

  Further, for example, the controller unit 126 performs control so as to read data from the hard disk 127 based on a command from the CPU 120 and record the read data on the recording medium 130 loaded in the drive device 128.

  The recording medium 130 applicable to the drive device 128 is not particularly limited as long as digital data can be recorded. However, a recordable type of DVD (Digital Versatile Disc), CD (Compact Disc), Blu- A disc-shaped recording medium such as an optical disc such as ray disc (registered trademark) or a magneto-optical disc, or a rewritable nonvolatile semiconductor memory is suitable.

  A removable hard disk can also be used as the recording medium 130 applicable to the drive device 128.

  The communication unit 125 communicates with an external device by wire and / or wireless using a predetermined protocol based on the control of the CPU 120.

  The wired and / or wireless communication interface is not particularly limited as long as digital communication is possible, but as the wired communication, a LAN (Local Area Network) using USB, IEEE 1394, Ethernet (registered trademark), or the like can be considered. .

  Further, IEEE802.11a / b / g, Bluetooth, etc. can be considered as the wireless communication.

  Further, by connecting an external device having a host function such as a personal computer and the video camera device 100 with an interface such as USB or IEEE1394, the hard disk 127 or drive device connected to the controller unit 126 of the video camera device 100 is connected. The recording medium loaded in 128 can be mounted on an external device.

  The power supply unit 131 is made of, for example, a battery, and supplies power to each unit of the video camera device 100.

  ON / OFF of power supply by the power supply unit 131 is controlled by the CPU 120 in accordance with, for example, a predetermined operation on the operation input unit 124.

  The CPU 120 is connected to a nonvolatile memory 129 capable of holding stored contents even when power is not supplied.

  The CPU 120 can store and hold setting information for the video camera device 100 and predetermined management information in the nonvolatile memory 129.

<< File System Applicable to Embodiments of Invention >>
The video camera apparatus 100 illustrated in FIG. 2 as a recording apparatus applicable to each embodiment of the present invention mainly includes the content file Fct composed of digital video data and digital audio data obtained by imaging and sound collection as described above. In addition, recording is performed on the hard disk 127.

  Here, in the video camera apparatus 100, it is assumed that the content file Fct is managed and recorded on the hard disk 127 by a FAT (File Allocation Table) file system. As is well known, the FAT file system manages files using a tree-type directory structure.

  Data writing and reading are performed by a logical minimum data management unit called a cluster. A cluster is a unit obtained by collecting a predetermined number of sectors, which are the minimum units of physical data writing and reading on a recording medium.

FIG. 3 shows a general system configuration of the FAT file system by a hierarchical model.
First, the hierarchical model is roughly divided into a software layer and a hardware layer as a lower layer.

  The software layer corresponds to software processing realized by a program executed by a CPU (CPU 120 in the example of FIG. 2) on the host side with respect to the recording medium, various firmware, middleware, and the like.

  The software layer in this case is configured such that the application 50 is positioned above the application 50 and the file system 51 as shown in the figure. It can be considered that a physical recording area of the recording medium itself is located in the hardware layer.

  The application 50 corresponds to, for example, application software that has a file recording / playback function and uses the recording medium 52, and issues an access request at the file level to the file system 51.

  The file system 51 corresponds to software that realizes a function as a file system. In this example, since the FAT file system is used as the file system, the software that provides the function of the file system 51 is also configured corresponding to the FAT file system. In the file system 51, an access request to the recording medium 52 is made according to the access request from the application 50.

The recording medium 52 is logically formatted (initialized) according to the FAT file system. In FIG. 2, the hard disk 127 corresponds to the recording medium 52.
In FIG. 2, the recording medium 130 loaded in the drive device 128 also corresponds to the recording medium 52. When the recording medium 130 is a recordable DVD or Blu-ray Disc, the file system applied to the recording medium 130 is UDF (Universal Disk Format).

  The UDF includes a format according to ISO (International Organization for Standardization) 9660, and can be accessed by various file systems used in a computer apparatus, and includes a FAT file system. In this case, the CPU 120 needs to further have a configuration corresponding to UDF as software that provides the function of the file system 51.

  In response to the access request from the file system 51, the recording medium 52 reads out data from the specified address and returns it to the file system 51 to execute an access response.

  The file system 51 receives data as an access response from the recording medium 52 and delivers the received data to the application 50. The application 50 executes a required process at the application level for the received data file according to, for example, an operation input by the user.

Further, the FAT file system manages files by a tree-type directory structure, and manages files as a cluster unit set.
Such file management and data management are realized by providing directory entries and table information (management information) as FAT as is well known.
The directory entry is information indicating the location of files, directories, and subdirectories on the recording medium 52 at the cluster level, and the FAT is information indicating a link at the cluster level forming the directory and the file.

  FIG. 4 shows an exemplary management structure of files recorded on the hard disk 127. Files are managed hierarchically by a directory structure. On the hard disk 127, at least two directories, an index file directory and a content file directory, are formed.

  A content file Fct is stored under the content file directory. An index file Index is stored under the index file directory.

  The index file Findex stores management information for managing the content file Fct by a method different from the FAT. In this case, the index file “Findex” stores management information for efficiently performing management of the content by specializing in content such as still images and moving images.

  Thus, by performing management using dedicated management information specialized for the content file Fct separately from the FAT file system, the number of contents that can be recorded has increased in recent years as the storage capacity of recording media has increased. In addition to the content related information (for example, information on the file name and update date, etc.) that the file system has, it is possible to respond to requests such as more efficient management of related information. For example, when playing back a moving image, an index display using thumbnail images representing each content file may be performed. In such a case, it is possible to embed a thumbnail image corresponding to each content file in advance so as to correspond to the index display by using dedicated management information. That is, by storing thumbnail images on the management information side in this way, index display can be performed efficiently.

  Further, by separately using management information specialized for content file management in this way, a directory is created under the content file directory in a predetermined division such as the order of file creation date, and the corresponding content file is stored in the directory. Management such as storage is also possible. By separately performing management using dedicated management information in this way, it is possible to realize a management mode that was not found in a general-purpose file system.

<< File management form applicable to embodiments of the invention >>
Next, an example file management mode applicable to each embodiment of the present invention will be described.
FIG. 5 shows an example of a file management form using an index file Index as dedicated management information applicable to each embodiment of the present invention.

  As described with reference to FIG. 4, an index file Index is stored under the index file directory. As shown in the figure, this index file Index stores a plurality of management file slots Sm.

  Each management file slot Sm includes a file name portion 60, a file update date / time portion 61, an entry ID portion 62, an entry update date / time portion 63, a content ID portion 64, a content update date / time portion 65, a file path portion 66, and the like. Hereinafter, the data stored in each management file slot Sm is referred to as entry data.

<File name part>
In FIG. 5, the file name portion 60 stores information on the file name of the content file Fct associated with the management file slot Sm.

<File update date / time section>
The file update date / time portion 61 stores information indicating the date / time when the content file Fct itself associated with the management file slot Sm is created and / or updated.

<< Entry ID part >>
The entry ID section 62 stores identification information (referred to as an entry ID) for uniquely identifying entry data to the management file slot Sm. The entry ID is assigned each time new entry data is entered into the management file slot Sm in accordance with the generation of a new content file Fct.

<Entry update date / time part>
The entry update date / time portion 63 stores information indicating the date / time when entry data for the management file slot Sm was entered or updated. The information stored in the entry update date / time portion 63 is changed according to the update of the entry data regardless of whether or not the content file Fct is updated. An example in which the information stored in the entry update date / time portion 63 is updated includes, for example, a case where metadata (not shown) to be associated with the content file Fct is updated.

<< Content ID part >>
The content ID unit 64 uniquely identifies the content file Fct associated with the management file slot Sm, in other words, associated with the entry ID, and indicates the recording order of the content file Fct with respect to the hard disk 127. The allocated content ID is stored. For example, when a new content file Fct is added to the hard disk 127, it is incremented by a predetermined value, for example, 1.

  The content ID is also incremented by a predetermined value, for example, 1 when the content file Fct already recorded on the hard disk 127 is updated.

  In the embodiment of the present invention, the content ID is incremented by 1 each time a new content file Fct is added to the hard disk 127 and each time the content file Fct is updated. In this way, the recording order of the content file Fct with respect to the hard disk 127 can be indicated by the content ID.

《Content update date and time section》
The content update date and time unit 65 stores information indicating the date and time when the content file Fct is created and / or updated. The information stored in the content update date / time portion 65 does not change by copying or moving the corresponding content file Fct.

  On the other hand, the information stored in the file update date / time unit 61 is different from the information stored in the content update date / time unit 65 in that the information is updated when the content file Fct is copied or moved.

<File path part>
The file path unit 66 stores information on the path to the content file Fct associated with the management file slot Sm. That is, in this case, information indicating the location of the content file Fct under the FAT file system management is stored.

  Here, new entry data is added to the management file slot Sm in the index file Index according to the generation of the content file Fct on the hard disk 127 by the file system 51.

  In the added entry data, information indicating the location of the generated content file Fct under the FAT file system management is stored in the file path 66. As a result, the management file slot Sm is associated with the content file Fct generated under the content file directory.

  In this case, the content file Fct generated under the content file directory can also be specified by the content ID stored in the content ID portion 64, as indicated by the dashed arrow in FIG.

<About recording process>
Specifically, with regard to the image recording process in the embodiment of the present invention, when the CPU 120 recognizes that the moving image capturing start operation has been performed based on the control signal from the operation input unit 124, the image signal processing unit 112 and the camera function unit 115 are respectively controlled, and the operation mode in the video camera device 100 is changed to the moving image capturing mode until the moving image capturing end point. In this case, the photoelectric conversion unit 111 images the subject at a predetermined period from the recognition time point of the imaging start operation to the recognition time point of the imaging end operation, and sequentially obtains image data DM1 to DMn (n is an integer) obtained as a result of the image signal. The data is sent to the processing unit 112.

  The image signal processing unit 112 performs compression processing on the image data DM1 to DMn sequentially supplied from the photoelectric conversion unit 111 according to a predetermined compression encoding method such as MPEG (Moving Picture Experts Group), for example. Then, the image signal processing unit 112 sends each compressed image data obtained as a result of the compression processing to the CPU 120 as a moving image file DMFx (x = 1, 2, 3,..., Or m (m is an integer)). .

  The CPU 120 records the moving image files DMF <b> 1 to DMFm sent from the image signal processing unit 112 on the hard disk 127 via the controller unit 126 by a file system corresponding to the hard disk 127. At the same time, the CPU 120 generates management information corresponding to each of the moving image files DMF1 to DMFm and adds the management information to the index file Index on the hard disk 127.

  On the other hand, when the CPU 120 recognizes that the still image capturing start operation has been performed based on the control signal from the operation input unit 124, the CPU 120 controls the image signal processing unit 112 and the camera function unit 115, respectively. The operation mode at 100 is changed to the still image capturing mode. In this case, the photoelectric conversion unit 111 images the subject at a predetermined period from the recognition time point of the imaging start operation to the recognition time point of the imaging end operation, and sends image data DJ obtained as a result of the imaging to the image signal processing unit 112.

  The image signal processing unit 112 performs compression processing on the image data DJ supplied from the photoelectric conversion unit 111 according to a predetermined compression encoding method such as JPEG (Joint Photographic Experts Group), for example. The image data is sent to the CPU 120 as a still image file DJFy (v = 1, 2, 3,..., Or l (l is an integer)).

  The CPU 120 records the still image files DJF <b> 1 to DJF <b> 1 sent from the image signal processing unit 112 on the hard disk 127 through the controller unit 126 by a file system corresponding to the hard disk 127. At the same time, the CPU 120 generates management information corresponding to each of the still image files DJF1 to DJF1 and adds the management information to the index file Index on the hard disk 127.

  In this way, the CPU 120 captures images in a section (hereinafter referred to as an imaging cut) from a still image capturing operation time point or a moving image capturing start operation time point to a moving image capturing end operation time point arbitrarily determined according to a user operation. The recorded image is recorded on the hard disk 127 as a file, and management information adapted to each image file can be added to the index file Index.

About backup processing
Next, backup processing in this embodiment will be described. First, it is incremented each time a new content file Fct is added to the hard disk 127 as the backup source described in the section of content ID (content identifier) in << Regarding file management forms applicable to embodiments of the invention >>. In other words, using the content ID indicating the recording order of the content file Fct, the backup of the content file is executed in order from the smallest content ID to the largest content ID. At that time, the free space of the recording medium is compared with the file size of the content file to be backed up next, and if it is insufficient, the backup processing is interrupted, and a backup media list as shown in FIG. The content ID of the content file that has been backed up is registered and saved.

  In the backup media list (backup media list information), the file update date / time recorded in the file update date / time portion of the management file slot corresponding to the content file first recorded on the recording medium in association with the content ID is recorded. The date and time when the backup process was started is registered as the backup execution date and time, respectively.

  Since the index file is configured to manage the data related to the content file, the data related to the backup process can be managed by generating the list separately from the index file.

  The backup media list is stored in the storage unit, but may be stored on the hard disk or may be stored in the nonvolatile memory 129. In this embodiment, description will be made on the assumption that data is stored in a hard disk.

  In this backup media list, when backup is interrupted due to insufficient recording medium capacity, or when backup of all content files is completed, the content ID corresponding to the last completed content file, The shooting date and backup execution date and time are additionally registered at the end of the list when an event occurs. In this way, in the generated backup media list, the content ID having the maximum value stored in each recording medium is listed for each recording medium. Therefore, as will be described in detail later, it is listed as an index file. It is possible to classify the content files on the hard disk by comparing the content IDs that are stored, and it is possible to perform management such as subsequent file operations for each backup recording medium.

  Among the content IDs included in the backup media list, a content ID having a value equal to or smaller than the last content ID in the list corresponds to a content file that has already been backed up. Therefore, the content file that has not been backed up by the previous backup processing is specified by the last content ID in the backup media list.

  Therefore, if the backup process is restarted or new content is added to the hard disk after all content files have been backed up, the backup media list will be included in the recorded content files. Information for specifying a content file having a content ID larger than the last content ID is generated as a simple difference information list LSB-e as shown in FIG.

  As described above, in the simple difference information list LSB-e, access information for the content file Fct having a content ID larger than the last content ID in the backup media list is listed. Specifically, the file path information of each corresponding content file Fct stored in the file path unit 66 stored in the index file Findex recorded on the hard disk 127 is listed.

  Note that the configuration of the simple difference information list LSB-e is not limited to the above, and for example, a configuration in which content IDs are listed instead of file path information is also conceivable. By backing up the content files listed in the simple difference information list LSB-e in the order of the list, it is possible to back up without duplication or omission of content files.

  The backup processing according to the embodiment will be described in detail with reference to FIGS.

  The left side of FIG. 8 shows an example of the storage state of the content file Fct in the hard disk 127 that is the backup source. The content file Fct corresponding to the content ID marked with “X (X)” indicates the content file Fct deleted from the hard disk 127. 8 shows the recording media 130A, 130B,... That are backup destinations.

  Here, consider a case where the recorded content of the hard disk 127 is backed up to the recording medium 130 at the time point u1 when the content file Fct up to the content ID value “5” is recorded on the hard disk 127. At this time, it is assumed that the content file Fct having the content ID value “4” has already been deleted from the hard disk 127. In the initial state, the backup media list is not recorded on the hard disk 127. Further, when performing the backup process, the user loads a recording medium 130 </ b> A serving as a backup destination into a drive device 128 built in the video camera device 100 in advance.

  In this case, according to the process shown in the flowchart of FIG. 9, when an instruction is given to perform a backup storage process for the content file Fct recorded on the hard disk 127 by the entire content file storage process on the recording medium 130A (step S1301). The CPU 120 determines whether a backup media list is stored in the hard disk 127 (step S1302).

  At this time, since the backup media list is not yet stored in the hard disk 127, the CPU 120 records all the content files Fct recorded in the hard disk 127 in the recording medium 130A for the file system 51. (Step S1307).

  In accordance with this request, the file system 51 sequentially reads the content file Fct from the hard disk 127 and records it on the recording medium 130A (step S1308). At this time, the reading order is controlled so that the reading order of the content file Fct from the hard disk 127 is in the order of the content ID.

  In addition, at the start of the recording process, the display unit displays a wording indicating that the backup process is being executed, or a display indicating that the backup process is being performed, and the minimum content ID of the content file to be backed up Starts displaying the shooting date and time of the content file having the current date and time when the backup process is being executed.

  A display example is shown in FIG. Thus, by displaying that the backup process is being performed, the user can recognize that the backup process is being performed, and can be alerted not to perform an inadvertent operation.

  Also, by displaying the shooting date and time of the content file having the smallest content ID among the files to be backed up, the user can confirm when the backup is performed from the shot content file.

  In addition, by displaying the shooting date and time and the current date and time when backup is being performed, the management of the backup destination recording media is displayed, and the date and time are entered directly on the recording media and recorded on the recording media. By looking at the date, the date when the user took an action such as shooting or backup, unlike the number generated mechanically by the device, it becomes easier to grasp intuitively and the convenience of the user is improved.

  When the recording is completed, a message indicating backup completion or a schematic display is displayed on the display unit, and the backup media list is stored in the hard disk 127 (step S1309).

  In this case, since all the content files Fct recorded on the hard disk 127 at the time point u1 are recorded on the recording medium 130A, the maximum content ID value “5” among the content ID values of the content file Fct recorded on the hard disk 127. "Is the last content ID, and the file update date (shooting date and time) and the backup execution date and time of the content file having the smallest content ID among the content files to be backed up are registered in the backup media list.

  Next, when the content file Fct is further recorded on the hard disk 127 and the content file Fct up to the content ID value “11” is recorded, the recorded content of the hard disk 127 is backed up to the recording medium 130. Think. At this time, it is assumed that the content file Fct having the content ID value “6” and the value “10” has already been deleted from the hard disk 127.

  First, the user loads the recording medium 130 </ b> B as a backup destination into the drive device 128.

  In response to an instruction to back up the content file Fct recorded on the hard disk 127 to the backup destination recording medium 130B, the CPU 120 determines whether or not a backup media list is stored in the hard disk 127.

  In this case, since the content ID value “5” is stored as the last content ID value in the backup media list, the CPU 120 acquires the index file Index recorded in the hard disk 127 (step S1303).

  The CPU 120 generates a simplified difference information list LSB-e based on the acquired index file Index (step S1304). In the example of FIG. 8, since the content ID value “5” is the content ID value registered last in the list, the content ID value larger than the content ID value “5”, that is, the content ID value “6” to The file paths of the content files Fct respectively corresponding to the content ID value “11” are listed in the simple difference information list LSB-e.

  Then, based on the file paths listed in the simple difference information list LSB-e, the content files Fct are sequentially read out from the hard disk 127 in the order of content IDs and recorded on the recording medium 130B (step S1305).

  Details of the method for generating the simple difference information list LSB-e in step S1304 and the difference file group processing in step S1305 will be described later.

  At the start of the recording process, as shown in FIG. 10, the display unit displays a word indicating that the backup process is being executed, or a display schematically showing that the backup process is being executed, and a content file to be backed up Display of the shooting date and time of the content file having the smallest content ID and the current date and time when the backup process is being executed. When the content file Fct corresponding to the content ID value “11” is recorded on the recording medium 130B, a message indicating backup completion or a graphical display is performed on the display unit, and the content ID value “11” is displayed in the backup media list. Finally, it is registered and stored in the hard disk 127 (step S1306).

<< Simple Difference Information List Generation Process >>
FIG. 11 is a flowchart showing in more detail an example of the generation process of the simple difference information list LSB-e in step S1304 described above.

  In first step S1401, the CPU 120 obtains a backup media list stored in the hard disk 127. In the next step S1402, the pointer value [j] is reset to a value “0”. This pointer value [j] is used as a pointer for indicating the target entry data from each entry data entered in the index file Index acquired from the hard disk 127 in step S1303, that is, the management file slot Sm. Play a role.

  In the next step S1403, it is determined whether or not the pointer value [j] matches the total number of content files recorded on the hard disk 127. In other words, it is determined whether or not the pointer value [j] matches the number of entry data entered in the acquired index file Index.

  If it is determined that the pointer value [j] does not match the total number of content files recorded on the hard disk 127, the process proceeds to step S1404. In step S1404, the content ID is acquired from the entry data of the [j] -th content file Fct. That is, the content ID stored in the content ID portion 64 in the entry data indicated by the pointer value [j] is acquired. In the next step S1405, it is determined whether or not the content ID value acquired in step S1404 is larger than the content ID value registered at the end of the backup media list acquired in step S1401.

  If it is determined in step S1405 that the content ID value acquired in step S1404 is greater than the content ID value registered at the end of the backup media list acquired in step S1401, the process proceeds to step S1406. Is done. In other words, this means that the content file Fct recorded after the content file Fct backed up on the recording medium 130 exists on the hard disk 127.

  In step S1406, the CPU 120 refers to the file path unit 66 in the entry data indicated by the pointer value [j], and acquires the file path from the entry data of the [j] -th content. In step S1407, the acquired file path information is listed in the simple difference information list LSB-e described with reference to FIG. The simple difference information list LSB-e is temporarily stored in the RAM 121, for example.

  When the file path is added to the simple difference information list LSB-e in step S1407, the process proceeds to step S1408, the pointer value [j] is incremented by 1, and the process returns to step S1403.

  On the other hand, if it is determined in step S1405 that the content ID value acquired in step S1404 is smaller than the content ID value registered at the end of the backup media list acquired in step S1401, Moves to step S1408, the pointer value [j] is incremented by 1, and the process returns to step S1403. In other words, all the content files Fct existing on the hard disk 127 are content files Fct recorded before the content file Fct backed up on the recording medium 130, and therefore exist on the hard disk 127. This means that the file path information corresponding to the content file Fct is not added to the simple difference information list LSB-e.

  If it is determined in step S1403 that the pointer value [j] matches the total number of content files recorded on the hard disk 127, the series of processes in this flowchart is terminated, and the process proceeds to step S1305 in FIG. To be migrated.

  FIG. 12 is a flowchart showing in more detail an example of processing for the difference file group in step S1305 in FIG. 9 described above. In the first step S1501, the pointer value [m] is reset to a value “0”. This pointer value [m] serves as a pointer for indicating the target file path from the file paths listed in the simple difference information list LSB-e.

  In the next step S1502, it is determined whether or not the pointer value [m] matches the number of file path listings in the simple difference information list LSB-e. If it is determined in step S1502 that the pointer value [m] does not match the list number in the simple difference information list LSB-e, the process proceeds to step S1503.

  In step S1503, the CPU 120 obtains the [m] -th file path shown in the simple difference information list LSB-e. When the [m] -th file path is acquired, a request to read the content file Fct indicated by the acquired file path from the hard disk 127 and record it in the recording medium 130 is made in the next step S1504. This request is made to the file system 51 by the CPU 120, for example. In response to this request, the content file Fct read from the hard disk 127 is stored in the recording medium 130 in the next step S1505.

  When the storage process in step S1505 is executed, the pointer value [m] is incremented by 1 in step S1506, and the process returns to step S1502. On the other hand, if it is determined in step S1502 that the pointer value [m] matches the number of file paths listed in the simple difference information list LSB-e, the series of processes in this flowchart is terminated. The process proceeds to step S1306 in FIG. 9 described above.

  In this embodiment, as illustrated in the flowcharts of FIGS. 9 to 12 described above, after the simple difference information list LSB-e is generated, for each file path sequentially listed in the list, Although the content file Fct is read from the hard disk 127 and stored in the recording medium 130, this is not limited to this example. That is, even in this case, every time one differential content file Fct is specified without generating the simple difference information list LSB-e, the content file Fct is read from the hard disk 127 and stored in the recording medium 130. You can also do it.

  In this case, the content file Fct can be stored in the recording medium 130 at once for all the file paths listed in the simple difference information list LSB-e.

  Furthermore, in this embodiment, a case where information indicating the recording order in which the content file Fct is recorded on the hard disk 127 is realized by using a recording order whose value is incremented by 1 every time a new content file Fct is recorded. Although described, this is not limited to this example. For example, a content ID based on a combination of a file path and a file update date / time can be used as information indicating the recording order.

  Here, when the recording capacity of the recording medium 130 as the backup destination is much smaller than the recording capacity of the hard disk 127 as the backup source, the recordable capacity in the recording medium 130 during the backup processing is the data of the content file Fct. It can be considered that the backup processing is interrupted because the size becomes smaller than the size. In this embodiment, even in such a case, the backup process can be executed without any problem.

  As an example, in the difference file group processing in step S1305 of FIG. 9, the file system 51 controls the recording while checking the file size of the content file Fct to be recorded and the free space of the recording medium 130A, for example, and then recording the file. If it is determined that the content file Fct to be recorded cannot be recorded on the recording medium 130A, the recording of the content file Fct may be terminated.

  For example, when the recording is completed, the process is forcibly shifted from step S1305 to step S1306, and the largest content ID value of the content file Fct for which backup has been completed is registered in the backup media list, and the hard disk 127 is recorded. To save.

  In the example of FIG. 8, when the content file Fct with the content ID value “8” has been recorded during the backup process at the time point u2, the next content file Fct with the content ID value “9” is stored. Consider a case where there is not enough free space on the recording medium 130B to record. In this case, when the content file Fct having the content ID value “8” has been recorded, the backup process is interrupted, and the content ID value “8” is registered at the end of the backup media list and stored in the hard disk 127.

  The next backup process can be started from the content file Fct of the next content ID value “9” based on the last content ID value of the previous backup media list. By applying this method, it is possible to easily perform a process of distributing and backing up content files Fct accumulated in large quantities on the hard disk 127 to the recording media 130A, 130B,. .

  That is, while performing the backup process as described above, the file system 51 constantly monitors the free capacity of the backup destination recording medium 130, and the recording medium 130 has enough free capacity to record the next content file Fct. If not, recording is terminated at that time, and the maximum content ID value among the content ID values corresponding to the content file Fct for which recording has been completed is additionally registered at the end of the backup media list and stored in the hard disk 127. When the recording medium 130 is replaced and the next backup is resumed, the backup process is controlled based on the last content ID in the backup media list.

  As described above, by controlling the backup of the content file Fct recorded on the hard disk 127 based on the backup media list stored on the hard disk 127 that is the backup source, the backup having a smaller recording capacity than the backup source. Even when performing backup in a distributed manner, it is possible to easily realize backup processing without omissions and duplications. In addition, when the backup is performed in a distributed manner by exchanging recording media, The content ID of the backed up content file is stored in the hard disk 127 as a backup media list. By using this backup media list for managing the content file Fct after backup on the hard disk 127 built in the video camera apparatus 100, it is possible to manage and operate the backup media list classified by backup media. It becomes.

《About content file management》
Next, management of the content file Fct after backup on the hard disk 127 built in the video camera apparatus 100 will be described. The management here refers to content classification, display, and operation.

<Explanation of list display>
The video camera device 100 has a function of listing and displaying content files in order to select a desired content file from a plurality of content files when the recorded content file is played back. For example, when the CPU 120 recognizes that the content list display operation has been performed based on the control signal from the operation input unit 124, the CPU 120 controls the controller unit and the image signal processing unit, respectively, to thereby operate the operation mode in the video camera device 100. To the content list display mode. In this case, the controller unit reads the index file Findex from the hard disk and sends it to the CPU 120.
The CPU 120 generates, on the RAM 121, a list display list of entry IDs obtained by sorting information of one or a plurality of management file slots from the sent index file in chronological order from each content update date and time.

  Although the list of entry IDs is generated here, the content ID may be used as long as the content file can be uniquely specified.

  In the list display list, the number of contents that can be displayed in one screen (for example, 6) is set as one page, the entry IDs are grouped in order from the top of the list, and the top group of the list is set as the first page. Page numbers are assigned in order of the second page and the third page.

  FIG. 13 shows an example of the list display list. The corresponding content in the index file is searched from the entry ID included in the last page of the list display list, and the content file path information stored in the file path portion is acquired from the management file slot of the corresponding content file, The content file file of the obtained file path is sequentially read from the hard disk, combined with the image signal processing unit, and a thumbnail image is generated by reducing and converting the image size.

  The thumbnail images generated from the sequentially read content files are laid out in order of the content update date and time so as to be displayed simultaneously on one screen, and are sent to the display unit and displayed.

  In the case of moving image content, the top image is used as a thumbnail image (reduced image), but an image at a position after a predetermined time may be used.

  In this embodiment, the thumbnail image is configured to be generated as needed by transitioning to the list display mode and reading the content file. However, when the content file is generated, the thumbnail image is generated and the hard disk is generated. In this case, a portion for storing the file path of the thumbnail image is provided in the management file slot, and the thumbnail image is called and displayed with the information from the management file slot. The processing related to the generation of thumbnail images in the display mode can be omitted, and the response to the list display operation can be improved.

  Furthermore, if an operation for displaying the content file of the previous or subsequent page is recognized based on the control signal from the operation input unit 124, the previous or subsequent page is displayed on the previous or subsequent page. The content file path information stored in the file path portion is acquired from the included management file slot, and the same processing is performed.

  If the operation for displaying the subsequent page is recognized while the last page is displayed, the first page may be displayed, or the operation for displaying the previous page is recognized while the first page is displayed. In such a case, the last page may be displayed.

  In this way, the thumbnail images generated from the content file are displayed in a list on the display unit in chronological order of the content update date and time, and based on the control signal from the operation input unit, for the currently displayed content file, It is possible to display a list of all content files recorded on the hard disk within a limited screen by configuring to display new or old ones in chronological order of content update date and time. .

<List of backed up content files>
Next, a function for managing content files based on information obtained by backup processing will be described. In the previous content list display mode, when it is recognized that the list display operation for each backup medium has been performed based on the control signal from the operation input unit 124, the controller unit and the image signal processing unit are controlled respectively. The operation mode in the video camera device 100 is changed to the backup content list display mode.

  In this case, the controller unit reads the index file Index and the backup media list from the hard disk, and sends them to the CPU 120. The CPU 120 generates a backup list display list on the RAM 121 by sorting the content IDs from the smaller content IDs to the larger ones from the sent index file.

  Next, in order from the first management file slot in the backup list display list, the content ID is the same as or smaller than the smallest recording order in the backup media list, and the media group 1 is assigned to the media group 1 in the following order. , Media group numbers are allocated in order of media groups 2 and 3 in order of the second smallest content ID and the third smallest content ID included in the backup media list.

  Further, each media number group is grouped into pages corresponding to the number of contents displayed on one screen, and page numbers are allocated in order of page 1 and page 2 in order from the smallest content ID.

  FIG. 14 shows an example of the backup list display list. If content ID [1] to content ID [38] exist on the hard disk, these are sorted in order of content ID, and then the content ID is [8] [16] [ 33] [38] is recorded, the content IDs [1] to [8] on the backup list having content IDs [8] and lower in the backup media list are classified into the media group 1, and the following , [9] to [16] are classified into the media group 2, [17] to [33] are classified into the media group 3, and [34] to [38] are classified into the media group 4.

  Further, the content IDs [1] to [8] classified into the media group 1 are grouped into pages corresponding to the number of contents displayed on one screen, and the content IDs [1] to [6] are classified as Page1. Content IDs [7] to [8] are classified as Page2. Similarly, each media group is divided into pages, and the backup media list display list is completed.

  Next, a thumbnail image is generated from the content ID included in page 1 of the maximum media group number (media group 4 in the example of FIG. 14) of this backup list display list, in the same manner as in normal list display processing. Are laid out so as to be displayed on one screen in the order of content IDs and displayed on the display unit.

  Further, when an operation for displaying the content file of the previous or subsequent page from the page of the currently displayed backup list display list is recognized based on the control signal from the operation input unit 124, the previous or subsequent page is recognized. The content file path information stored in the file path portion is acquired from the management file slot included in the file, and the same processing is performed.

  At this time, when a page in the same media group is displaying Page 1 and an operation for displaying the previous page is received, the last page of the previous media group is displayed and the last page in the same media group is displayed. When an operation for displaying a subsequent page is received while displaying, page 1 of the next media group is displayed.

  In addition, when the operation of displaying the subsequent page is recognized while displaying the final page of the final media group, the first page of the media group 1 may be displayed, or the first page of the media group 1 is displayed. If the operation for displaying the previous page is recognized, the last page of the last media group may be displayed.

<Explanation of display examples>
FIG. 15 shows a display example of the backup media list display. The content image display unit includes a thumbnail image display unit, a media display unit, a page display unit, and a scroll display unit. It is arranged.

For example, when the operation unit is configured to recognize an operation by an operation unit having a touch panel, the scroll operation unit is displayed to recognize an operation for displaying the previous page or the subsequent page by touching the scroll operation unit. . For example, if you touch an upward triangular picture part, it will be recognized as an operation to display the previous page, and touching a downward triangular picture part will recognize it as an operation to display the next page. It is something to be made.
The page display unit makes it easy for the user to display that the content in the same media group is displayed by displaying the number of pages when there are a plurality of pages in the media group.

  The media display section displays the shooting date and time of the backup media list of the media group to which the currently displayed content belongs. For example, for the media group 1 classified by the first content ID in the backup media list, the value stored at the shooting date and time corresponding to the content ID in the backup media list is displayed here.

  In this way, the user can easily identify when the captured content is the content of the backup media. In this embodiment, the shooting date / time corresponding to the content ID for bundling the media group is used. However, the backup execution date / time may be used, and it may be easier for the user to understand the backup execution date / time. Conceivable. Therefore, a setting screen may be separately prepared so that the display content can be changed according to preference, and the screen can be switched.

  In addition, the previous scroll display can only be operated to select the previous or next page, but by touching the media display, the media selection display can be selected to directly select the media. This further improves the listability of the backed up content. For example, when the media display unit is touched, a media list is displayed as shown in FIG.

  In the media list display, the corresponding shooting date / time or backup execution date / time is listed in the order of each content ID in the backup media list, and the user touches the touch panel with the desired shooting date / time or backup execution date / time position. As a result of the selection, the operation is performed from the operation unit that designates the media group, and the page 1 of the media group in the media list display list including the corresponding content ID is displayed.

  In this way, it becomes possible to list and search the backed up content files using the backed up recording medium as a display unit. If the backup media list does not exist, the backup image list is not created and the thumbnail image display area is configured with only the background color of the thumbnail image display area. Similarly, the media display area and page display are displayed. By configuring only the background color of each display unit, the backed-up content is displayed on the hard disk. At this time, it may be displayed in the thumbnail display section that there is no backed up content file by wording. This makes it easier for the user to understand that no backup has been performed.

  In this way, by displaying a list of backed up content files, it is possible to easily confirm to the user whether or not the content files on the hard disk have been backed up.

  Also, by classifying by recording medium and displaying a list for each classification, the content file being backed up is divided and stored in the recording medium, and the content file is backed up to which recording medium It is possible to easily manage content files such as

<Deleting content files>
The content file deletion process will be described. In this embodiment, when an operation for instructing deletion of a content file is performed during list display or backup list display, a selection screen for a deletion method is displayed on the display unit, and the files to be deleted are designated and deleted one by one. By selecting a method and a method of deleting a backed up content file in units of media groups, a method of easily deleting desired content is provided.

  This makes it possible to delete only the contents that have been backed up in batches for each backed-up recording medium, and accidentally erase the files that have not been backed up. Can be avoided. Further, since it can be deleted for each recording medium, it is easy to leave a thing that should be kept even if it has been backed up for each recording medium.

  A specific explanation of the case of deleting content by designating one content file at a time is that the CPU has performed a content deletion operation based on a control signal from the operation input unit during list display or backup list display. When it is recognized that the operation has been performed, the controller unit, the image signal processing unit, and the display unit are controlled to shift to the content deletion mode.

  In this case, a deletion method selection screen (FIG. 17) is first displayed on the display unit, and the deletion method designation from the user is awaited. When the user selects “Delete by designating image” using the touch panel of the operation input unit or the like, a deletion image selection display is displayed on the display unit. The deleted image selection display is controlled to display a list of thumbnail images by the same processing as the list display, and therefore will not be described repeatedly here.

  In this display screen, when the thumbnail image being displayed is designated using the touch panel of the operation input unit or the like, the thumbnail image is designated to be deleted. At this time, the CPU specifies the content file corresponding to the specified thumbnail image by the operation from the operation input unit, the page displayed when the list display list is instructed, the order of the specified image, The content ID is determined from the arrangement, and the deleted content ID is generated and registered in the deletion list and stored in the RAM. If more than one are specified, they are added to the deletion list stored on the RAM.

  In addition, when displaying a list of contents corresponding to the content IDs registered in the deletion list, an icon indicating that deletion is specified is superimposed on the thumbnail image to indicate that the deletion is specified. Give feedback to the user. You may have a display means to show that it is selected by the method different from an icon. For example, a difference from a thumbnail image that is not specified may be added by putting a frame around the thumbnail image.

  As described above, by registering the files specified in the deletion list, it is possible to specify deletion of multiple image files at the same time, and it is possible to delete images more efficiently than repeating deletion one by one. it can. When the user finishes specifying the file to be deleted, the user performs the deletion execution operation to actually delete the specified file. For example, when the CPU recognizes that a deletion execution operation has been performed by a control signal from the operation input unit, a screen requesting confirmation from the user that the deletion execution operation has been performed is displayed on the display unit. Then, a confirmation operation from the user is awaited.

  When a deletion execution confirmation operation is performed by the user, the deletion execution process starts. In the deletion execution process, the CPU deletes the content file with the corresponding file path from the content ID registered in the deletion list generated on the RAM from the hard disk through the controller unit. When the deletion of the content file is completed, the management file slot of the corresponding content file is deleted from the index file. At the same time, the corresponding content ID registered in the deletion list is deleted from the list.

  When there are a plurality of content IDs in the deletion list, the above process is repeated until there are no content IDs registered in the deletion list. This completes the deletion process. In this way, even when a plurality of images are deleted, it is possible to delete them in a lump, and the number of operations by the user can be reduced.

  Next, as a specific description of deletion of backed up content files in units of media groups, first, a list of media groups to be deleted is displayed in a backup list display mode by a user operation. The method for selecting a media group has already been described with respect to the display of the backup list and will not be described. When the media group to be deleted is displayed in a list and the user recognizes that the user has performed an image file deletion operation through the operation input unit, a deletion method selection screen (FIG. 17) is displayed on the display unit, and the user Wait for specification of deletion method from.

  When the user selects “Delete by designating image” using the touch panel of the operation input unit or the like, a deletion image selection display is displayed on the display unit. When the user selects “delete backup media group” using the touch panel of the operation input unit or the like, the processing of media group deletion starts.

  In the media group deletion process, a deletion list is generated on the RAM, the content ID of the media group that has been displayed so far is acquired from the backup list display list, and the generated deletion list is registered. At the same time, the screen that prompts the user to confirm that the shooting date / time or backup execution date / time of the media group that was displayed immediately before entering the deletion processing in the backup list display mode, and that the deletion execution operation was performed on the display section Is displayed and a confirmation operation from the user is awaited.

  When a deletion execution confirmation operation is performed by the user, the deletion execution process starts. In the deletion execution process, the CPU deletes the content file with the corresponding file path from the content ID registered in the deletion list generated on the RAM from the hard disk through the controller unit.

When the deletion of the content file is completed, the management file slot of the corresponding content file is deleted from the index file. At the same time, the corresponding content ID registered in the deletion list is deleted from the list. When there are a plurality of content IDs in the deletion list, the above process is repeated until there are no content IDs registered in the deletion list.
When all deletions are completed, the information associated with the content ID corresponding to the media group is deleted from the backup media list. This completes the deletion for each media group.

  In this way, by extracting the content to be deleted from the backup list display list generated from the backup media list, it becomes possible to create a deleted file for each backup recording medium, and the user can record the backed up recordings. It is easy to specify the file to be deleted on a medium basis. This makes it possible to easily identify and delete a backed up file.

  In addition, because deletion is specified for each backed-up recording medium, it is possible to delete other than the images that you want to keep even if they have already been backed up, in units of the backed-up recording medium, and specify individual files for deletion. Compared to the case, it can be deleted with less effort.

<< Modifications to Embodiments of the Invention >>
As mentioned above, although embodiment of this invention was described, this invention should not be limited to each embodiment mentioned above. For example, in the above description, the recording medium 130 as the backup destination is described as being loaded into the drive device 128 built in the video camera device 100, but this is not limited to this example. For example, a recording device that is recognized as an external storage device of the video camera device 100 by being connected to the CPU 120 through a predetermined interface via the communication unit 125 is used as the backup destination recording medium 130. be able to.

  Furthermore, in the above description, the present invention has been described as applied to a portable video camera device, but this is not limited to this example. That is, the present invention can be applied to other types of electronic devices as long as two or more different recording media can be used in parallel in one housing.

  For example, the present invention can be applied to a digital still camera in which a still image is mainly captured using an image sensor and recorded on a recording medium. In addition, for example, in recent years, products in which an imaging element and a recording or storage medium are provided in a mobile phone terminal and a still image and a moving image can be captured and recorded have become widespread. As a recording or storage medium, a model incorporating a small hard disk has appeared. The present invention can also be applied to such a mobile phone terminal with an imaging function.

  According to the present embodiment, by storing the backup history for each backup recording medium, it becomes easy to classify each backup medium, and it is possible to check the backed up file from the backup history information. Therefore, an image that may be easily deleted can be determined. In addition, because it deletes each backup recording medium, if you want to keep the image you want to keep, leave only the media group of the image you want to keep, compared to deleting all the files except the one you want to keep, It is possible to reduce the trouble of the user who designates the deleted file by deleting the other and specifying the file.

  Prevents duplicate backups by determining backup order in the order of information (serial number or date / time) indicating the continuity given in the order of image data generation, and storing only the information of the last image that has been backed up And efficient backup can be performed.

  Further, the backup history can be stored with the minimum amount of information, and the backup history can be efficiently saved.

  By displaying information related to the backed-up images (shooting date and time, backup execution date and time) at the time of backup, information that has high utility value as information to be entered in the recording medium for the user (imagine the contents for the user) The searchability is improved for the user.

  In the above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  In the present embodiment, the video camera device for recording a moving image has been described, but the present invention is not limited to this. For example, the present invention can be applied to an information recording apparatus that records contents such as still images, audio images, and text files.

It is a figure which shows the usage type of an example of the video camera apparatus 100 as a recording device or recording / reproducing apparatus with which this invention was applied. It is a figure which shows the structure of an example of a video camera apparatus. It is a figure which shows the general system structure of a FAT file system by a hierarchy model. 2 shows an exemplary management structure of files recorded on a hard disk. It is a figure which shows an example file management form using the index file Index as exclusive management information applicable to each embodiment of this invention. It is a figure which shows an example of a backup media list. It is a figure which shows an example of the simple difference information list LSB-e. It is a figure which shows an example of a backup process typically. It is a flowchart which shows the flow of a backup process. It is a figure which shows an example of the screen display during backup processing execution. It is a flowchart which shows the production | generation process of an example of the simple difference information list LSB-e in detail. It is a flowchart which shows an example of a process with respect to a difference file group of step S1305 in FIG. 9 in detail. It is a figure which shows an example of a list display list. It is a figure which shows an example of a backup list display list. It is a figure which shows the example of a display of backup media list display. It is a figure which shows an example of a media list display. It is a figure which shows an example of the selection screen of a deletion method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Optical system 12 Housing | casing 13 Recording medium 14 Drive apparatus 15 Recording medium 50 Application 51 File system 52 Recording medium 60 File name part 61 File update date / time part 62 Entry ID part 63 Entry update date / time part 64 Content ID part 65 Content update date / time part 66 File path unit 100 Video camera device 110 Optical lens unit 111 Photoelectric conversion unit 112 Image signal processing unit 113 Image input / output unit 114 Display unit 115 Camera function unit 116 Audio input / output unit 117 Audio processing unit 120 CPU
121 RAM
123 ROM
124 operation input unit 125 communication unit 126 controller unit 127 hard disk 128 drive device 129 nonvolatile memory 130 recording medium 131 power supply unit

Claims (7)

A storage unit that stores a plurality of contents and a content identifier that is an identifier that can be uniquely identified and given to each of the plurality of contents in ascending order;
Backup of the plurality of contents to the recording medium is performed in ascending order of the content identifiers, and when the backup is completed or interrupted, the content that has been backed up is the last content that has been backed up. A control unit that stores the associated content identifier as backup media list information in the storage unit;
An information recording apparatus comprising: The controller is
When the backup media list information is stored in the storage unit, the content identifier corresponding to the content identifier next to the largest content identifier among the content identifiers stored as the backup media list information is stored. The information recording apparatus according to claim 1, wherein the recording is resumed from backup to the recording medium. The storage unit
Storing the shooting date and time of the content in association with each of the plurality of content;
The controller is
The storage date is stored in the storage unit as the backup media list information in association with the content identifier in association with the content identifier when the backup is completed or interrupted. The information recording device according to claim 1 or 2. The controller is
When the backup is completed or interrupted, a recording medium identifier that is given to each recording medium in ascending order and is uniquely identifiable is generated, and the generated recording medium identifier is used as the content identifier. The information recording apparatus according to claim 1, wherein the information recording apparatus stores the backup media list information in the storage unit in association with the information. The controller is
When deleting the backed up content from the storage unit, a content identifier that is one smaller than the content identifier associated with the content designated as the deletion target is stored in the storage unit as the backup media list information. 3. The information recording apparatus according to claim 1, wherein if there is a content identifier, the information recording device deletes from the storage unit the content associated with the content identifier next to the content identifier to the content designated as the deletion target. The information recording apparatus according to claim 3, further comprising a display unit that displays the shooting date and time of the content to be backed up during backup execution. A control unit of an information recording apparatus including a storage unit that stores a plurality of contents and a content identifier that is a uniquely identifiable identifier that is given in ascending order to each of the plurality of contents.
Executing backup of the plurality of contents to a recording medium in ascending order of the content identifiers;
Storing the content identifier associated with the content that was last backed up in the content as backup media list information in the storage unit when the backup is completed or interrupted; ,
Execute the information recording method.

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