JP2006254168A - Av data recording and playback apparatus and av data recording and playback method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To delete an AV data file recorded on a recording medium when a vacant record area is reduced below a predetermined value, and to restore the AV data file concerned when a vacant capacity is generated in the recording medium after the deletion. <P>SOLUTION: When recording new AV data on a recording medium 100, if the vacant capacity of the recording medium 100 is reduced below the predetermined value, deletion flag information in management information is confirmed. In case the deletion flag information indicates that the AV data file of interest is not deleted from the recording medium 100, the AV data file indicated by specified AV data information is deleted, and also the deletion flag information is rewritten into a value indicating a state that the AV data file of interest is deleted from the recording medium 100. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an AV data recording / reproducing apparatus and AV data recording / reproducing method for recording AV data storing either or both of video data and audio data on a recording medium.

  In recent years, various mobile AVs using small HDDs and flash memories as recording media have been accompanied by the increase in capacity and price of 1-inch / 1.8-inch small hard disk drives (hereinafter referred to as small HDDs) and flash memories. Equipment has appeared on the market.

  In addition, these mobile AV devices have a plurality of functions such as an AV player function for reproducing video and audio recorded on a recording medium, a digital still camera function for capturing a still image, and a camcorder function for capturing a moving image. There are many things to be mounted, and the tendency is getting stronger with the increase in capacity of recording media.

  As common issues in multifunction devices (hereinafter referred to as AV multifunction devices) having AV player functions, camcorder functions, and digital still camera functions (hereinafter referred to as camera functions as generic names of camcorder functions and digital still camera functions). There is a problem of the remaining amount management of the recording medium.

  When the user uses the AV player function of the AV multifunction device, it is desirable that as many video / audio contents as possible be stored in the recording medium of the AV multifunction device. You can enjoy the content, and you can select your favorite content according to your mood. In extreme terms, it is desirable that the content is stored to the full capacity of the recording medium.

  On the other hand, when the user uses the camera function of the AV multifunction device, it is desirable that as much free space as possible remains for recording AV data on the recording medium, and the more storage capacity remains. The user is freed from the hassle of selecting a subject to be photographed while considering the storage capacity. In extreme terms, the capacity of the recording medium is preferably empty.

Patent Document 1 prioritizes each of the contents recorded on the recording medium, and when there is no more free recording area on the recording medium, deletes it from the lower priority contents based on the priority information, A video recording / playback apparatus that secures a storage area for recording new AV data is disclosed.
Japanese Patent Application No. 2001-108897

  In the conventional AV multifunction device, it is desired that the content is stored to the full capacity of the recording medium so that the user can enjoy abundant content, while the recording medium is used for shooting using the camera function. There is a contradictory problem that it is desirable that a lot of sky remain in the space.

  Further, the invention of Patent Document 1 has a problem that once the content is deleted, the content cannot be restored even if there is free space in the storage medium later.

  The present invention enables shooting without worrying about the capacity of the recording medium when the user uses the camera function of the AV multifunction device, and when using the AV player function of the AV multifunction device, The area other than the storage area used by the camera function can be filled with content, and if the storage medium has free space after it has been deleted once to secure free recording area, the content is restored. An object of the present invention is to provide an AV data recording / reproducing apparatus capable of performing the above.

  An AV data recording / reproducing apparatus according to claim 1 of the present invention is a recording medium on which AV data files storing either or both of video data and audio data, and management information for managing each AV data file are recorded. An image capturing means for capturing a video signal to generate image data, an image data processing means for processing the image data to generate AV data, and the AV data to an AV data file Recording / reproduction processing means for recording on the recording medium, and management information processing means for processing the management information reproduced from the recording medium, the management information for specifying at least an AV data file to be managed AV data specifying information and deletion flag information for identifying whether or not the corresponding AV data file has been deleted from the recording medium. If the free storage capacity of the recording medium falls below a predetermined value when newly recording AV data on the recording medium, the management information processing means displays the deletion flag information in the management information. If it is confirmed and the deletion flag information indicates that the corresponding AV data file has not been deleted from the recording medium, the AV data file indicated by the AV data specifying information is deleted, and the deletion flag information The AV data file is rewritten to a value indicating a state in which the AV data file has been deleted from the recording medium.

  According to the AV data recording / reproducing apparatus of claim 1 of the present invention, when the camera function of the AV data recording / reproducing apparatus is being used, the AV data file recorded on the recording medium is recorded so that the free recording area falls below a predetermined value. Even when deleted, the history of the AV data file deleted by the deletion flag information can be recorded on the recording medium.

  The AV data recording / reproducing apparatus according to claim 2 of the present invention further includes original flag information for identifying whether the management information is original data or copy data in the management information according to claim 1, The management information processing unit, when newly recording AV data on the recording medium, if the free storage capacity of the recording medium falls below a predetermined value, the original flag information and the deletion in the management information The flag information is confirmed, the original flag information indicates that the corresponding AV data file is copy data, and the deletion flag information indicates that the corresponding AV data file has not been deleted from the recording medium. The AV data file indicated by the AV data specifying information is deleted, and the deletion flag information Relevant AV data file, characterized in that the rewriting to a value indicating a state of being deleted from the recording medium.

  According to the AV data recording / reproducing apparatus of claim 2 of the present invention, when the camera function of the AV data recording / reproducing apparatus is used, the free recording area falls below a predetermined value, and the AV data file recorded on the recording medium is recorded. When deleting, the original flag information is discriminated to confirm whether the corresponding AV data file is a copy file in which the original file exists other than the recording medium or an original file in which no copy exists, and the copy file Can only be deleted.

  According to a third aspect of the present invention, there is provided an AV data recording / reproducing apparatus in which an AV data file storing one or both of video data and audio data, and management information for managing each AV data file are recorded. Recording / reproducing the original AV data file storage means, recording / reproducing processing means for recording the original AV data file on the recording medium, and processing the management information reproduced from the recording medium Management information processing means, wherein the management information includes at least AV data specifying information for specifying an AV data file to be managed, and a deletion flag for identifying whether or not the corresponding AV data file has been deleted from the recording medium And the management information processing means determines whether the AV data file corresponding to the deletion flag information The original AV data corresponding to the original AV data file storage means based on the AV data specifying information when the recording medium is deleted and there is a predetermined or larger free storage area on the recording medium The file is read and recorded on the recording medium, and the deletion flag information is rewritten to a value indicating a state in which the corresponding AV data file is not deleted from the recording medium.

  According to the AV data recording / reproducing apparatus of claim 3 of the present invention, by identifying the AV data specifying information and the deletion flag in the management information of the recording medium, the AV data file deleted when the free storage capacity is insufficient can be specified. When the recording medium has free storage capacity, the AV data file indicated by the AV data identification information is read from the original data file storage means and recorded again on the recording medium, thereby restoring the state before the data deletion. can do.

  The AV data recording / reproducing apparatus according to claim 4 of the present invention further includes original flag information for identifying whether the management information is original data or copy data in the management information according to claim 3, The management information processing unit confirms the original flag information and the deletion flag information in the management information, indicates that the AV data file to which the original flag information corresponds is copy data, and the deletion flag information Indicates that the corresponding AV data file has been deleted from the recording medium, and if the recording medium has a predetermined or larger free storage area, the original AV data file is stored based on the AV data specifying information. When the corresponding AV data file is read from the means and recorded on the recording medium In, AV data file corresponding to the deletion flag information is equal to or rewritten to a value indicating a state of not being removed from the recording medium.

  According to the AV data recording / reproducing apparatus of claim 4 of the present invention, when the recording medium has a free storage capacity by identifying the original flag information, the AV data file indicated by the AV data specifying information is converted into the original data file. When reading from the storage means and recording again on the recording medium, it is possible to select only the AV data file in which the original file exists, read it from the original data file storage means, and record it again on the recording medium. It is possible to avoid an extra search process for an AV data file that originally does not exist.

  An AV data recording / reproducing apparatus according to claim 5 of the present invention is connected to the AV data recording / reproducing apparatus according to claim 1 through a digital IF, and performs recording / reproduction with respect to the recording medium via the digital IF. A digital IF means, a management information processing means for processing the management information reproduced from the recording medium via the digital IF means, and an original AV data file storage means, wherein the management information processing means If the deletion flag information of the information indicates that the corresponding AV data file has been deleted from the recording medium, and if there is more than a predetermined free storage area on the recording medium, the AV data specifying information is used. A corresponding original AV data file is read out from the original AV data file storage means, and the original AV data file is read via the digital IF means. And records on a recording medium, AV data file corresponding to the deletion flag information is equal to or rewritten to a value indicating a state of not being removed from the recording medium.

  According to the AV data recording / reproducing apparatus of claim 5 of the present invention, by identifying the AV data specifying information and the deletion flag in the management information of the recording medium, the AV data file deleted when the free storage capacity is insufficient can be specified. When the recording medium has free storage capacity, the AV data file indicated by the AV data identification information is read from the original data file storage means and recorded again on the recording medium, thereby restoring the state before the data deletion. can do.

  An AV data recording / reproducing apparatus according to claim 6 of the present invention is connected to the AV data recording / reproducing apparatus according to claim 2 via a digital IF, and performs recording / reproduction on the recording medium via the digital IF. A digital IF means, a management information processing means for processing the management information reproduced from the recording medium via the digital IF means, and an original AV data file storage means, wherein the management information processing means The original flag information and the deletion flag information in the information are confirmed to indicate that the AV data file corresponding to the original flag information is copy data, and the AV data file corresponding to the deletion flag information is the record When it is deleted from the medium and there is more than a predetermined free storage area on the recording medium Based on the AV data specifying information, the corresponding AV data file is read from the original AV data file storage means and recorded on the recording medium via the digital IF means, and the deletion AV information includes the deletion flag information corresponding to the AV data file. It is characterized in that it is rewritten to a value indicating a state that has not been deleted from the recording medium.

  According to the AV data recording / reproducing apparatus of the sixth aspect of the present invention, when the recording medium has a free storage capacity by identifying the original flag information, the AV data file indicated by the AV data specifying information is converted into the original data file. When reading from the storage means and recording again on the recording medium, it is possible to select only the AV data file in which the original file exists, read it from the original data file storage means, and record it again on the recording medium. It is possible to avoid an extra search process for an AV data file that originally does not exist.

  According to the AV data recording / reproducing method of claim 7 of the present invention, an AV data file storing either or both of video data and audio data is recorded on a recording medium on which management information for managing each AV data file is recorded. If the free storage capacity of the recording medium falls below a predetermined value when AV data is newly recorded on the recording medium, a deletion flag in the management information is recorded. Confirming the information, and if the deletion flag information indicates that the corresponding AV data file has not been deleted from the recording medium, deleting the AV data file indicated by the AV data specifying information in the management information; Rewriting the deletion flag information with a value indicating a state in which the corresponding AV data file has been deleted from the recording medium; If the recording data indicates that the corresponding AV data file has been deleted from the recording medium and there is a predetermined or larger free storage area on the recording medium, the corresponding original AV based on the AV data specifying information It includes a step of reading a data file and recording it on the recording medium, and a step of rewriting the deletion flag information to a value indicating that the corresponding AV data file has not been deleted from the recording medium.

  According to an AV data recording / reproducing method of claim 8 of the present invention, an AV data file storing either or both of video data and audio data is recorded on a recording medium on which management information for managing each AV data file is recorded. If the free storage capacity of the recording medium falls below a predetermined value when AV data is newly recorded on the recording medium, the original flag in the management information is recorded. Information and deletion flag information are confirmed, the original flag information indicates that the corresponding AV data file is copy data, and the AV data file corresponding to the deletion flag information is not deleted from the recording medium. The AV data file indicated by the AV data specifying information in the management information, and Rewriting the removal flag information to a value indicating that the corresponding AV data file has been deleted from the recording medium, confirming the original flag information and the deletion flag information in the management information, and matching the original flag information The AV data file to be copied is copy data, and the deletion flag information indicates that the corresponding AV data file has been deleted from the recording medium. Is present, the step of reading out the corresponding AV data file based on the AV data specifying information and recording it on the recording medium, and the deletion flag information indicating that the corresponding AV data file has not been deleted from the recording medium And a step of rewriting to a value indicating.

  According to the AV data recording / reproducing method of claims 7 and 8 of the present invention, even if the empty recording area falls below a predetermined value and the AV data file recorded on the recording medium is deleted, it is deleted by the deletion flag information. The history of the AV data file can be recorded on a recording medium. Further, when the free recording area falls below a predetermined value and the AV data file recorded on the recording medium is deleted, the original flag information is discriminated, so that the corresponding AV data file has an original file other than the recording medium. It is possible to confirm whether it is an existing copy file or an original file with no copy, and delete only the copy file. Further, by identifying the AV data specifying information and the deletion flag in the management information of the recording medium, it becomes possible to specify the AV data file that is deleted when the free storage capacity is insufficient, and when the recording medium has free storage capacity. Thus, by reading the AV data file indicated by the AV data specifying information and recording it again on the recording medium, it is possible to restore the state before the data deletion. Further, by identifying the original flag information, when the recording medium has free storage capacity, when the AV data file indicated by the AV data specifying information is read and recorded again on the recording medium, the AV in which the original file exists is stored. Only the data file can be selected, read, and recorded again on the recording medium, so that an extra search process for the AV data file in which the original AV data file does not originally exist can be avoided.

  The present invention allows the user to use the camera function by deleting the AV data file recorded on the recording medium when the free recording area falls below a predetermined value while using the camera function of the AV data recording / reproducing apparatus. When shooting, it is possible to shoot without worrying about the capacity of the recording medium, and when using the AV player function, the area other than the storage area used by the camera function may be filled with content. it can. In addition, the history of the AV data file deleted by the deletion flag information can be recorded on the recording medium, and the deleted AV data file can be specified. Once the content is deleted, the storage medium has free space. If possible, the content can be restored.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to FIGS.

  FIG. 1 is a block diagram of an AV data recording / reproducing apparatus. In FIG. 1, 100 is a recording medium, 101 is an imaging means, 102 is an image data processing means, 103 is a recording / reproducing processing means, and 104 is a management information processing means.

  A recording operation of the AV data recording / reproducing apparatus of FIG. 1 will be described. The image data output from the imaging unit 101 is encoded by the image data processing unit 102 and output to the recording / playback processing unit 103 as AV data. The recording / reproducing processing means 103 determines whether or not there is a free recording capacity for recording AV data on the recording medium 100. If the free recording capacity is equal to or greater than a predetermined value, it is determined that recording is possible and the AV data is recorded. Record as a file.

  If the free recording capacity of the recording medium 100 is equal to or less than a predetermined value as a result of the determination by the recording / playback processing unit 103, the management information processing unit 104 can delete the management information based on the management information read in advance from the recording medium 100 An AV data file is selected, deleted from the recording medium 100, and recording of new AV data is started when the free recording capacity exceeds a predetermined value. Thereafter, while the recording of AV data continues, when the free recording capacity of the recording medium again falls below a predetermined value, the AV data file of the recording medium 100 is deleted again based on the management information, and the recording is continued.

  A method for determining an AV data file to be deleted with reference to management information will be described with reference to FIGS.

  2 to 4, a data tree surrounded by a dotted line 210 indicates a directory and file structure of data recorded on the recording medium 100. There are an audio directory and a video directory as child directories of the root directory, and AV data files are stored in the respective directories. Reference numerals 201 to 205 denote AV data files including audio data, and reference numerals 206 to 208 denote AV data files including video data.

  Tables 1 to 3 show management information related to the AV data files 201 to 208. The management information is not shown in the directory structure surrounded by the dotted line 210 but is recorded in the recording medium 100. The management information identifies the AV data specifying information for specifying the AV data file and whether the corresponding AV data file is a copy file in which the original data exists in another recording medium or an original file in which no copy exists. Original flag information for deletion and deletion flag information for identifying whether or not the corresponding AV data is a file deleted from the recording medium.

  Hereinafter, a file in which a file with the same content does not exist in another recording medium is referred to as an original file, and a file in which a file with the same content exists in another recording medium is referred to as a copy file.

  The AV data specifying information specifies the corresponding AV data file by the absolute path of the data tree in the recording medium 100. Further, when the original flag information is 1, it indicates an original file, and when the original flag information is 0, it indicates a copy file. Further, when the deletion flag information is 1, it indicates that the corresponding AV data file is a file deleted from the recording medium 100, and when the deletion flag information is 0, the corresponding AV data file is from the recording medium 100. Indicates that it has not been deleted.

  The AV data specifying information of the management information in Table 1 indicates the recording position on the data tree in the recording medium 100 of the AV data files 201-206. The original flag information indicates that the AV data files 201, 202, 204, and 205 are copy files (original flag information = 0), and the AV data files 203 and 206 are original files (original flag information = 1). )It is shown that. The deletion flag information indicates that all of the AV data files 201 to 206 are recorded on the recording medium 100 (deletion flag information = 0) and are not deleted.

  Next, when recording the AV data generated by the image pickup means 101 of the AV data recording apparatus of FIG. 1 as a new AV data file on the recording medium 100 in the recording state of FIG. The operation when the free storage capacity is equal to or less than a predetermined value will be described with reference to FIGS.

  When the free storage capacity of the recording medium 100 is equal to or less than a predetermined value, the management information processing unit 104 determines a file that can be deleted from the original flag information and the deletion flag information of the management information in Table 1. First, it is determined that the original file is not an original file (original flag information = 0) and the deleted flag information is an undeleted file (deleted flag information = 0), and the AV data file 201 is deleted. After the start of recording of a new AV data file, if the storage capacity is further insufficient, the same determination is performed and the AV data file 202 is deleted. Further, when the recording of the new AV data file is completed, information on the new AV data file is registered in the management information.

  The data recording state and management information state of the recording medium 100 after performing the above-described processing on the recording medium 100 in the recording state of FIG. 2 will be described with reference to FIG.

  The change from the state of FIG. 2 to the state of FIG. 3 is that, in order to record a new AV data file 207, the AV data files 201 and 202 are deleted, and the corresponding deletion flag information in the management information of Table 2 is set. , The file is deleted (delete flag information = 1). Furthermore, AV data specifying information for the newly recorded AV data file 207 is registered, and corresponding original flag information and deletion flag information are set. Here, the reason why the original flag information corresponding to the AV data file 207 is set as a state (original file information = 1) indicating that it is an original file is that the AV data file 207 is captured by the AV data recording apparatus of FIG. This is because it is an AV data file generated by photographing with the means 101, and the copy file does not exist on another recording medium.

  Next, when recording a new AV data file on the recording medium 100 in the recording state of FIG. 3, the operation when the free storage capacity of the recording medium 100 is equal to or less than a predetermined value will be described with reference to FIGS. This will be described with reference to FIG.

  When the free storage capacity of the recording medium 100 is equal to or less than a predetermined value, the management information processing unit 104 determines a file that can be deleted from the original flag information and the deletion flag information of the management information in Table 2. First, it is determined by the original flag information that the file is not an original file (original flag information = 0) and the deletion flag information is an undeleted file (deletion flag information = 0), and the AV data file 204 is deleted. Here, the reason for not deleting the AV data file 203 is that the original flag information identifies the original file (original flag information = 1). If a shortage of storage capacity further occurs after the start of recording of a new AV data file, the same determination is made and the AV data file 205 is deleted. Further, when the recording of the new AV data file is completed, information on the new AV data file is registered in the management information.

  The data recording state and management information state of the recording medium 100 after performing the processing described so far for the recording medium 100 in the recording state of FIG. 3 will be described with reference to FIG.

  The change from the state of FIG. 3 to the state of FIG. 4 is that, in order to record a new AV data file 208, the AV data files 204 and 205 are deleted and the corresponding deletion flag information in the management information of Table 3 is set. , The file is deleted (file deletion information flag = 1). Furthermore, AV data specifying information for the newly recorded AV data file 208 is registered, and corresponding original flag information and deletion flag information are set. Here, the reason why the original flag information corresponding to the AV data file 208 is set as a state (original file information = 1) indicating that it is an original file is the same reason as that in the case of the AV data file 207.

  According to the AV data recording / reproducing apparatus and AV data recording / reproducing method configured as described above, when the free recording area falls below a predetermined value while using the camera function, the AV data file recorded on the recording medium 100 is recorded. By deleting, when the user uses the camera function, it is possible to shoot without worrying about the capacity of the recording medium 100, and when using the AV player function, the camera function is used. You can enjoy abundant content by filling the area other than the storage area with the content.

  In addition, even when the AV data file recorded on the recording medium 100 is deleted while the free recording area falls below a predetermined value while using the camera function of the AV data recording / reproducing apparatus, the AV data deleted by the deletion flag information is deleted. The history of the file can be recorded on the recording medium 100, the deleted AV data file can be identified, and the content is restored when the storage medium 100 has free space after the content is deleted once can do.

  Further, when deleting the AV data file recorded on the recording medium 100, it is possible to determine whether the corresponding AV data file is a copy file in which the original file exists in addition to the recording medium by determining the original flag information. Can be deleted, and only the copy file can be deleted. If the storage medium 100 has free space after the content is deleted once, the original file exists to ensure that the original file exists. Content can be restored.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 is a block diagram of an AV data recording / reproducing apparatus. In FIG. 5, 501 is an original AV data file storage means, 502 is a recording / playback processing means, and 503 is a management information processing means.

  Reference numeral 100 denotes a detachable recording medium. In the present embodiment, description will be made assuming that the recording medium 100 is the same as the recording medium 100 on which AV data is recorded by the AV data recording / reproducing apparatus of FIG. When the recording medium 100 is loaded, the management information processing unit 503 acquires the management information reproduced from the recording medium 100 by the recording / playback processing unit 502 and determines the management information.

  When the free recording capacity of the recording medium 100 is equal to or greater than a predetermined value, the recording medium is selected from the original AV data files stored in the original AV data file storage unit 501 based on the management information read from the recording medium 100. The AV data file that can be copied to 100 is detected, and the recording / playback processing unit 502 reads the AV data file from the original AV data file storage unit 501 based on the detection result, and records it on the recording medium 100.

  A method for discriminating AV data files that can be copied with reference to management information will be described with reference to FIGS.

  In FIG. 6, a data tree surrounded by a dotted line 210 indicates a directory and file structure of data recorded on the recording medium 100. There are an audio directory and a video directory as child directories of the root directory, and AV data files are stored in the respective directories. Reference numerals 201 to 205 denote AV data files each including audio data.

  Table 4 shows management information regarding the AV data files 201 to 205. According to the deletion flag information of the management information, it can be determined that the AV data files 201, 202, 204, 205 have been recorded on the recording medium 100 in the past, but are now deleted.

  The management information is not shown in the directory structure surrounded by the dotted line 210 but is recorded in the recording medium 100. Further, it is assumed that the recording medium 100 has a free storage capacity of a predetermined amount or more in the recording state of FIG.

  The management information processing unit 503 determines an AV data file that can be copied to the recording medium 100 from the original flag information and the deletion flag information of the management information. First, it is determined that the file is a copy file based on the original flag information (original flag information = 0) and the file is deleted based on the deletion flag information (deletion flag information = 1), and is determined from the file name of the AV data specifying information. The AV data file stored in the original AV data file storage unit 501 is specified. When the AV data file can be specified, the corresponding AV data file is written to the recording medium 100 via the recording / playback processing unit 502, and the deletion flag information of the management information is rewritten to the undeleted state (delete flag information = 0).

  Further, if the free storage capacity of the recording medium 100 after writing is equal to or greater than a predetermined value, the same process is repeated, or the free storage capacity of the recording medium 100 becomes equal to or smaller than the predetermined value, or “a copy file (original flag information = 0). ) And the deleted file (deletion flag information = 1) "is repeated until there is no AV data file satisfying the condition.

  The data recording state and management information state of the recording medium 100 after the above-described processing is performed on the recording medium 100 in the recording state of FIG. 6 will be described with reference to FIG.

  The change from the state of FIG. 6 to the state of FIG. 7 is restored by copying the AV data files 201, 202, 204, 205 in which the deletion history remains from the original AV data storage means, and management information accordingly This deletion flag information is also rewritten to a state where all deletion flag information has not been deleted (deletion flag information = 0).

  According to the AV data recording / reproducing apparatus and the AV data recording / reproducing method configured as described above, the AV data specifying information and the deletion flag in the management information of the recording medium 100 are identified to be deleted when the free storage capacity is insufficient. When the AV data file can be specified and the recording medium 100 has a free storage capacity, the AV data file indicated by the AV data specifying information is read from the original data file storage unit 501 and recorded on the recording medium 100 again. , It can be restored to the state before data deletion.

  Further, by identifying the original flag information, when the recording medium 100 has a free storage capacity, the AV data file indicated by the AV data specifying information is read from the original data file storage unit 501 and recorded on the recording medium 100 again. At this time, it is possible to select only the AV data file in which the original file exists, read it from the original data file storage means 501, and record it again on the recording medium 100, which is an extra for the AV data file that originally does not exist. Search processing can be avoided.

  Further, the camera function of the AV data recording / reproducing apparatus of the first embodiment is being used by combining the AV data recording / reproducing apparatus of the present embodiment with the AV data recording / reproducing apparatus of the first embodiment (FIG. 1). In addition, when the free recording area of the recording medium 100 falls below a predetermined value, only the AV data file in which the original file exists is deleted, and the management information is updated and recorded in the recording medium 100. The recording medium 100 is mounted on the AV data recording / reproducing apparatus of the present embodiment, and the AV data file deleted by the AV data recording / reproducing apparatus of the first embodiment is used as the original AV of the AV data recording / reproducing apparatus of the present embodiment. When the user uses the camera function by automatically searching from the data file storage means 501 and copying it to the recording medium 100, the recording is performed. It is possible to shoot without worrying about the capacity of the medium 100, and when using the AV player function, the area other than the storage area used in the camera function can be filled with contents and deleted once. The restored AV data file can be restored to the state before deletion.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIG.

  In FIG. 8, 800 is a block diagram of the first AV data recording / reproducing apparatus, 801 is an original AV data file storage means, 802 is a digital IF means, and 803 is a management information processing means. Reference numeral 804 denotes a block diagram of a second AV data recording / reproducing apparatus corresponding to the AV data recording / reproducing apparatus (FIG. 1) of the first embodiment, and reference numeral 805 denotes digital IF means. IF is an interface.

  The digital IF means 802 of the first AV data recording / reproducing apparatus 800 and the digital IF means 805 of the second AV data recording / reproducing apparatus 804 are connected.

  When the first and second AV data recording / reproducing devices 800 and 804 are connected via the digital IF means 802 and 805, the management information processing means 803 acquires management information from the recording medium 100 via the digital IF means 802 for management. Determine the information.

  When the free recording capacity of the recording medium 100 is equal to or greater than a predetermined value, the original AV data file stored in the original AV data file storage unit 801 based on the management information read from the recording medium 100 is stored in the recording medium 100. The copyable AV data file is detected, and the digital IF unit 802 reads the AV data file from the original AV data file storage unit 801 based on the detection result, and records it on the recording medium 100 via the digital IF.

  Note that the method for deleting an AV data file when the free storage capacity of the recording medium 100 is equal to or less than a predetermined value is the same as in the first embodiment, and the AV data file that can be copied is determined by referring to the management information. The method for doing this is the same as in the second embodiment, and a description thereof will be omitted.

  According to the AV data recording / reproducing apparatus and AV data recording / reproducing method configured as described above, when the free recording area falls below a predetermined value while using the camera function, the AV data file recorded on the recording medium 100 is recorded. By deleting, when the user uses the camera function, it is possible to shoot without worrying about the capacity of the recording medium 100, and when using the AV player function, the camera function is used. You can enjoy abundant content by filling the area other than the storage area with the content.

  Further, by identifying the AV data specifying information and the deletion flag in the management information of the recording medium 100, it is possible to specify the AV data file deleted when the free storage capacity is insufficient, and the recording medium 100 has free storage capacity. At this point, the AV data file indicated by the AV data specifying information can be read from the original data file storage unit 801 and recorded on the recording medium 100 again, thereby restoring the state before the data deletion.

  Further, by identifying the original flag information, the AV data file indicated by the AV data specifying information is read from the original data file storage unit 801 and recorded on the recording medium 100 again when the recording medium 100 has a free storage capacity. At this time, it is possible to select only the AV data file in which the original file exists, read it from the original data file storage means 801, and record it again on the recording medium 100. Search processing can be avoided.

  Note that the data tree structure shown in FIGS. 2 to 4 used in the present embodiment and the method of describing the data tree absolute path as the AV data specifying information are examples, and the AV data file can be specified by the AV data specifying information. As long as it is configured, the present invention can also be applied to a recording medium recorded with another data tree structure or another type of AV data specifying information.

  Further, in the present embodiment, the method for determining the original file and the copy file by providing the original flag information as the management information has been described. However, the present invention is not limited to this. If a rule for registering and managing only the file is provided in advance, the copy file and the original file can be discriminated without the original flag information.

  Further, in the present embodiment, an example has been described in which the AV data file is deleted in order from the management information when the free storage capacity of the recording medium is equal to or less than a predetermined value, but the present invention is not limited to this. Alternatively, for example, information indicating prioritization of deletion may be recorded as management information and deleted according to the priority.

  Further, in the second and third embodiments, the case where the file name is used as the information for specifying the AV data file stored in the original AV data file storage means has been described, but the present invention is limited to this. It is not a thing. For example, the present invention can also be applied to a case where an ID is assigned in advance to an AV data file stored in the original AV data file storage unit, and the ID and AV data specifying information are managed in association with the management information of the recording medium.

  The present invention is useful as an AV data recording / reproducing apparatus and AV data recording / reproducing method in an AV multi-function machine having an AV player function and a camera function.

Block diagram of AV data recording / reproducing apparatus in Embodiment 1 of the present invention Explanatory drawing of one recording state of the recording medium in Embodiment 1 of this invention Explanatory drawing of one recording state of the recording medium in Embodiment 1 of this invention Explanatory drawing of one recording state of the recording medium in Embodiment 1 of this invention Block diagram of AV data recording / reproducing apparatus in Embodiment 2 of the present invention Explanatory drawing of one recording state of the recording medium in Embodiment 2 of this invention Explanatory drawing of one recording state of the recording medium in Embodiment 2 of this invention Block diagram of AV data recording / reproducing apparatus in Embodiment 3 of the present invention

Explanation of symbols

100 Recording medium 101 Imaging means 102 Image data processing means 103, 502 Recording / reproduction processing means 104, 503, 803 Management information processing means 501, 801 Original AV data file storage means 800 First AV data recording / reproducing apparatus 802, 805 Digital IF Means 804 Second AV data recording / reproducing apparatus

Claims (8)

An AV data recording / reproducing apparatus for recording / reproducing an AV data file storing either or both of video data and audio data with respect to a recording medium on which management information for managing each AV data file is recorded. And
Imaging means for capturing video signals to generate image data, image data processing means for processing image data to generate AV data, and recording / playback processing means for recording AV data as an AV data file on the recording medium; Management information processing means for processing the management information reproduced from the recording medium,
The management information includes at least AV data specifying information for specifying an AV data file to be managed, and deletion flag information for identifying whether or not the corresponding AV data file has been deleted from the recording medium,
The management information processing means confirms the deletion flag information in the management information when the free storage capacity of the recording medium falls below a predetermined value when newly recording AV data on the recording medium. When the deletion flag information indicates that the corresponding AV data file is not deleted from the recording medium, the AV data file indicated by the AV data specifying information is deleted, and the deletion flag information is set to the corresponding AV data. An AV data recording / reproducing apparatus, wherein a file is rewritten to a value indicating a state in which the file has been deleted from the recording medium. The management information further includes original flag information for identifying whether the corresponding AV data file is original data or copy data,
The management information processing unit, when newly recording AV data on the recording medium, if the free storage capacity of the recording medium falls below a predetermined value, the original flag information and the deletion in the management information The flag information is confirmed, the original flag information indicates that the corresponding AV data file is copy data, and the deletion flag information indicates that the corresponding AV data file has not been deleted from the recording medium. 2. The method according to claim 1, wherein the AV data file indicated by the AV data specifying information is deleted, and the deletion flag information is rewritten to a value indicating a state in which the corresponding AV data file is deleted from the recording medium. AV data recording / reproducing apparatus. An AV data recording / reproducing apparatus for recording / reproducing an AV data file storing either or both of video data and audio data with respect to a recording medium on which management information for managing each AV data file is recorded. And
Original AV data file storage means, recording / reproduction processing means for recording the original AV data file on the recording medium, and management information processing means for processing the management information reproduced from the recording medium,
The management information includes at least AV data specifying information for specifying an AV data file to be managed, and deletion flag information for identifying whether or not the corresponding AV data file has been deleted from the recording medium,
The management information processing means indicates that the AV data file corresponding to the deletion flag information has been deleted from the recording medium, and if there is a predetermined or more free storage area on the recording medium, the AV data A state in which the corresponding original AV data file is read from the original AV data file storage means based on the specific information and recorded on the recording medium, and the deletion flag information is not deleted from the recording medium. An AV data recording / reproducing apparatus characterized by rewriting the value to indicate The management information further includes original flag information for identifying whether the corresponding AV data file is original data or copy data,
The management information processing unit confirms the original flag information and the deletion flag information in the management information, indicates that the AV data file to which the original flag information corresponds is copy data, and the deletion flag information Indicates that the corresponding AV data file has been deleted from the recording medium, and if the recording medium has a predetermined or larger free storage area, the original AV data file is stored based on the AV data specifying information. A corresponding AV data file is read from the means and recorded on the recording medium, and the deletion flag information is rewritten to a value indicating that the corresponding AV data file has not been deleted from the recording medium. 3. The AV data recording / reproducing apparatus according to 3. An AV data recording / reproducing apparatus that is connected to the AV data recording / reproducing apparatus according to claim 1 by a digital IF and performs recording / reproducing on the recording medium via the digital IF,
Digital IF means, management information processing means for processing the management information reproduced from the recording medium via the digital IF means, and original AV data file storage means,
The management information processing means indicates that an AV data file corresponding to the deletion flag information of the management information is deleted from the recording medium, and there is a predetermined or more free storage area on the recording medium The corresponding original AV data file is read out from the original AV data file storage means based on the AV data specifying information and recorded on the recording medium via the digital IF means, and the deletion flag information is set in the corresponding AV data file. Is rewritten to a value indicating a state in which it is not deleted from the recording medium. An AV data recording / reproducing apparatus connected to the AV data recording / reproducing apparatus according to claim 2 by a digital IF and performing recording / reproduction on the recording medium via the digital IF,
Digital IF means, management information processing means for processing the management information reproduced from the recording medium via the digital IF means, and original AV data file storage means,
The management information processing means confirms the original flag information and the deletion flag information in the management information, indicates that the AV data file to which the original flag information corresponds is copy data, and the deletion flag information Indicates that the corresponding AV data file has been deleted from the recording medium, and if the recording medium has a predetermined or larger free storage area, the original AV data file is stored based on the AV data specifying information. The corresponding AV data file is read from the means and recorded on the recording medium via the digital IF means, and the deletion flag information is rewritten to a value indicating that the corresponding AV data file has not been deleted from the recording medium. An AV data recording / reproducing apparatus characterized by the above. An AV data recording / reproducing method for recording / reproducing an AV data file storing either or both of video data and audio data on a recording medium on which management information for managing each AV data file is recorded. And
When the free storage capacity of the recording medium falls below a predetermined value when AV data is newly recorded on the recording medium, the deletion flag information in the management information is confirmed, and the deletion flag information corresponds. When indicating that the AV data file has not been deleted from the recording medium, deleting the AV data file indicated by the AV data specifying information in the management information;
Rewriting the deletion flag information to a value indicating a state in which the corresponding AV data file has been deleted from the recording medium;
When the deletion flag information indicates that the corresponding AV data file has been deleted from the recording medium, and there is a predetermined or larger free storage area on the recording medium, the corresponding information is based on the AV data specifying information. Reading an original AV data file and recording it on the recording medium;
Rewriting the deletion flag information to a value indicating that the corresponding AV data file has not been deleted from the recording medium;
An AV data recording / reproducing method comprising: An AV data recording / reproducing method for recording / reproducing an AV data file storing either or both of video data and audio data on a recording medium on which management information for managing each AV data file is recorded. And
When recording new AV data on the recording medium, if the free storage capacity of the recording medium falls below a predetermined value, the original flag information and the deletion flag information in the management information are confirmed, and the original flag When the information indicates that the corresponding AV data file is copy data, and the deletion flag information indicates that the corresponding AV data file has not been deleted from the recording medium, the AV data in the management information Deleting the AV data file indicated by the specific information;
Rewriting the deletion flag information to a value indicating a state in which the corresponding AV data file has been deleted from the recording medium;
The original flag information and the deletion flag information in the management information are confirmed, the AV data file to which the original flag information corresponds is copy data, and the AV data file to which the deletion flag information corresponds is When it is deleted from the recording medium and there is a predetermined free storage area on the recording medium, a corresponding AV data file is read based on the AV data specifying information and recorded on the recording medium And steps to
Rewriting the deletion flag information to a value indicating that the corresponding AV data file has not been deleted from the recording medium;
An AV data recording / reproducing method comprising:

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