JP4606301B2 - Content processing device - Google Patents

Description

  The present invention relates to a content processing apparatus, and more particularly to a content processing apparatus that is applied to, for example, a digital camera and deletes content data recorded on a recording medium in response to a deletion operation.

  An example of a conventional device of this type is disclosed in Patent Document 1. According to this prior art, an image history management file is formed on a recording medium. When the deletion of the image file recorded on the recording medium is instructed, the file name of the image file to be deleted, the recording area information indicating the recording area in which the image file exists, and the last access type for this recording area are “erase” Is registered in the image history management file. The image file to be deleted remains in the recording area even after registration in the image history management file is completed.

When the image file remaining in the recording area is overwritten by a new image file, the final access information of the overwritten recording area is updated from “erasure” to “record”. Therefore, the last access information indicates either “erasing” or “recording”. When the restoration of the image file is instructed, the restoration process is executed for the image file whose final access information indicates “erase”.
JP 2002-135711 A [H04N5 / 91, G03B19 / 02, H04N5 / 225]

  In the prior art, the file names of image files that can be restored and the file names of image files that cannot be restored are mixed in the image history management file. For this reason, it is necessary to search for an image file that can be restored when the restoration process is executed, which takes time.

  Therefore, a main object of the present invention is to provide a content processing apparatus capable of quickly returning a recording medium to a state before the deletion operation.

  Another object of the present invention is to provide a content processing apparatus capable of restoring content data deleted before power-off.

Content processing apparatus according to an invention of claim 1 (10), first writing means for writing a file containing the content data when the recording mode is selected in the recording medium (32) (S35), written by the first writing means writing of second writing means for writing to a recording medium file identification information for identifying the file (S37), first writing means a file arrangement information recorded in a recording medium so as to manage the position of the recording medium file first updating means for updating with respect to the processing (S39), receiving means for receiving a deletion operation when a specific mode in place of the recording mode is selected (S59), the particular mode file allocation information recorded on a recording medium In response to the first deletion operation accepted by the accepting means after the selection is made, the first duplicating means (S65) for duplicating to the nonvolatile first internal memory (34), The second duplicating means (S87) for duplicating the file identification information of the desired file recorded on the recording medium to the first internal memory in response to the delete operation accepted by the accepting means, and the duplication processing by the second duplicating means is performed. deleting means for deleting the file identification information from the recording medium (S89), second updating means for updating with respect to the file allocation information that has been recorded on the recording medium to the deletion of the deletion means (S91), in particular mode Third writing means (S9, S11, S103, S105) for writing the file arrangement information and file identification information stored in the first internal memory to the recording medium when the restoration operation is performed, and mounting for detachably mounting the recording medium Means (32), a determination means (S7) for determining whether or not the recording medium is attached / detached after accepting the deletion operation, and a third writing means is activated when the determination result of the determination means is negative active Providing means (S17) .

First write means, when the recording mode is selected, writes a file containing the content data to the recording medium. File identification information for identifying the written file is written to the recording medium by the second writing means. The file arrangement information recorded on the recording medium so as to manage the position of the file recorded on the recording medium is updated by the first updating unit in association with the writing process of the first writing unit.

When the specific mode is selected instead of the recording mode, the deletion operation is accepted by the accepting unit. The first duplicating unit duplicates the file arrangement information recorded on the recording medium to the nonvolatile first internal memory in response to the first deletion operation after the specific mode is selected. The second duplicating means duplicates the file identification information of the desired file recorded on the recording medium in the first internal memory in response to the deletion operation.

The file identification information subjected to the duplication process by the second duplication unit is deleted from the recording medium by the deletion unit. Further, the file arrangement information recorded on the recording medium is updated by the second updating unit in association with the deletion process of the deleting unit.

The file arrangement information and the file identification information stored in the first internal memory are written to the recording medium by the third writing means when the restoration operation is performed in the specific mode.

As described above, the file arrangement information and the deleted file identification information at the time before the deletion operation are returned from the first internal memory to the recording medium by the restoration operation after the deletion operation. By returning the file arrangement information and the file arrangement information copied to the first internal memory to the recording medium as they are, the recording medium can be quickly returned to the state before the deletion operation. In addition, by copying the file arrangement information and the file identification information to the nonvolatile first internal memory, it is possible to restore the file including the content data deleted before the power is turned off.

When the determination result of the determining means is negative, the file arrangement information and the file arrangement information recorded on the recording medium coincide with the file arrangement information and the file identification information stored in the first internal memory. Thus, consistent with the file allocation information is recorded on the recording medium and the file identification information and file allocation information, and file identification information that are replicated in the first internal memory is maintained.

Content processing apparatus according to an invention of claim 2 depends on claim 1, the third write means, the file allocation information, and file identification information stored in the first internal memory in response to power-on of the volatile 2 First transfer means (S9, S11) for transferring to the internal memory (24), and second transfer for transferring the file arrangement information and file identification information transferred by the first transfer means in response to the restoration operation to the recording medium Means (S103, S105). Thereby, the file arrangement information and the file identification information are transferred to the second internal memory immediately after the power is turned on, so that the file arrangement information and the file identification information transferred to the second internal memory are transferred to the recording medium by the second transfer means. Transfers promptly.

A content processing apparatus according to the invention of claim 3 is dependent on claim 1 or 2 , and the first determination means records recording means (42) for recording specific identification information indicating whether or not the recording medium has been attached or detached, A third writing unit further comprising a supply unit (46) for supplying power to the recording unit and a second determination unit (S5) for determining whether the specific identification information is invalidated due to the stop of the supply unit; The means executes the writing process when the determination result of the first determination means is negative. As a result, it can be confirmed whether or not the recording medium is attached or detached in the power-off state.

A content processing apparatus according to a fourth aspect of the present invention is dependent on any one of the first to third aspects, wherein the third writing means copies the file arrangement copied to the second internal memory before the writing process of the first writing means is performed. Information and file identification information are excluded from write candidates. As a result, consistency is ensured among the file arrangement information, file identification information, and files written in the recording medium.

Content processing apparatus according to an invention of claim 5 is dependent on claims 1 to 4, when the reproduction mode is selected further comprises a reproduction means (S43) for reproducing the desired file, the specific mode there in the playback mode The delete operation accepted by the accepting unit is directed to the file reproduced by the reproducing unit. As a result, the deletion operation can be performed while confirming the content included in the file .

A content processing apparatus according to a sixth aspect of the present invention is dependent on any one of the first to fifth aspects, wherein the content data is image data.

Content processing program according to the present invention of claim 7, the processor (38) of the content processing apparatus, a first writing step of writing a recording medium removably loaded files containing content data when the recording mode is selected (S35), file second write step of writing the identification information on the recording medium (S37), file allocation information recorded on the recording medium so as to manage the positions of the recorded files on the recording medium for identifying a file written by the first writing step a first updating step of updating in relation to the writing process of the first writing step (S39), the receiving step (S59), the file arrangement information recorded in a recording medium which accepts the delete operation when a specific mode is selected In response to the first delete operation accepted by the acceptance step after a specific mode has been selected First replication step of replicating the first internal volatile memory (S65), replicated in the first internal memory in response to deletion operation accepted in the acceptance step the file identification information of a desired file recorded in the recording medium The second duplication step (S87), the deletion step (S89) for deleting the file identification information subjected to the duplication processing in the second duplication step from the recording medium, and the deletion processing of the file arrangement information recorded on the recording medium. third write step of writing the second update step (S91), file allocation information, and file identification information recording medium stored in the first internal memory when the revival operation is performed in the specific mode to update in relation to ( S9, S11, S103, S105), the first determination step (S7 to determine whether removable recording medium is performed), and a first determination step of the determination result is negative To perform the activation step (S17) for activating the third write step can.

As in the first aspect, the file arrangement information and the deleted file identification information before the deletion operation are returned from the first internal memory to the recording medium by the restoration operation after the deletion operation. By returning the file arrangement information and the file identification information copied to the first internal memory to the recording medium as they are, the recording medium can be quickly returned to the state before the deletion operation. Further, by copying the management information and the identification information to the nonvolatile first internal memory, it is possible to restore the file including the content data deleted before the power is turned off.

According to the present invention, the file arrangement information and the deleted file identification information at the time before the deletion operation are returned from the first internal memory to the recording medium by the restoration operation after the deletion operation. By returning the file arrangement information and the file identification information copied to the first internal memory to the recording medium as they are, the recording medium can be quickly returned to the state before the deletion operation. In addition, by copying the file arrangement information and the file identification information to the nonvolatile first internal memory, it is possible to restore the file including the content data deleted before the power is turned off.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  Referring to FIG. 1, a digital camera 10 of this embodiment includes an optical lens 12. The optical image of the object scene is irradiated to the imaging surface of the image sensor 14 through the optical lens 12 and subjected to photoelectric conversion. As a result, a raw image signal representing the scene is generated.

  When the camera mode is selected and the shooting operation is performed by the user operating the key 44, the system controller 42 gives the CPU 40 a notification that the shooting operation has been performed. The CPU 40 instructs the TG (Timing Generator) 18 to perform the main exposure. The image sensor 14 is subjected to the main exposure by the TG 18, and the raw image signal generated thereby is output from the image sensor 14 in a raster scanning manner. The CDS / AGC / AD circuit 16 performs a series of processes of correlated double sampling, automatic gain adjustment, and A / D conversion on the raw image signal output from the image sensor 14, and outputs raw image data that is a digital signal. .

  The raw image data is subjected to processing such as white balance adjustment, color separation, and YUV conversion by the signal processing circuit 20. The YUV format image data thus obtained is written into the SDRAM 24 by the memory control circuit 22. When the camera mode is selected, a YUV image area 24a, a JPEG area 24b, a work area 24c,... Are formed in the SDRAM 24 as shown in FIG. Image data from the signal processing circuit 20 is written in the YUV image area 24a.

  The JPEG codec 38 reads the image data secured in the YUV image area 24a through the memory control circuit 22, compresses the read image data in accordance with the JPEG method, and compresses the compressed image data, that is, JPEG data through the memory control circuit 22 to the SDRAM 24. Is written in the JPEG area 24b. The object scene image at the time when the shooting operation is performed is secured in the JPEG area 24b as JPEG data by executing the above shooting process.

  Referring to FIG. 3, a recording medium 34 is a memory card formatted according to MS-DOS, and includes an MBR (Master Boot Record) 34a, a reserve area 34b, a PBR (Partition Boot Record) 34c, and a FAT (File Allocation Table). 1, FAT2, which is a copy of FAT1, has a root directory 34f and a data area 34g.

  Here, the data area 34g is formed by a plurality of clusters (unit recording areas). One data file extends over a plurality of clusters, and the link states of the plurality of clusters in which the data file is written are managed by FAT1 and FAT2. Further, file information (file name, size, creation date, etc.) for identifying the data file is written in the root directory 34f (or data area 34g). Note that FAT2 is a copy of FAT1, and is overwritten on FAT1 to restore management information when FAT1 is damaged.

  The CPU 40 reads the JPEG data stored in the JPEG area 24b through the memory control circuit 24, and records the JPEG file including the read JPEG data in the data area 34g of the recording medium 34 through the I / F 30. The CPU 40 further writes the file information of the recorded JPEG file in the root directory 34f and updates FAT1 and FAT2. The recording medium 34 is a detachable non-volatile recording medium that can be accessed by the CPU 40 when it is loaded in the slot 32.

  When the playback mode is selected by the user operating the key 44, the system controller 42 gives the CPU 40 a notification that the playback mode has been selected. The CPU 40 accesses the recording medium 34 through the I / F 30 and reads JPEG data stored in a desired JPEG file. The read JPEG data is written into the JPEG area 24 b of the SDRAM 24 through the memory control circuit 22.

  The JPEG codec 38 reads JPEG data from the JPEG area 24 b through the memory control circuit 22, expands the read JPEG data, and writes the expanded image data into the YUV image area 24 a of the SDRAM 24 through the memory control circuit 22.

  The video encoder 26 reads the image data stored in the YUV image area 24a through the memory control circuit 22, converts the read image data into an NTSC composite video signal, and converts the converted composite video signal into an LCD monitor. To 28. As a result, the reproduced image is displayed on the monitor screen.

  When an update operation is performed by the user to display another image on the monitor screen from the image displayed on the monitor screen, the system controller 42 notifies the CPU 40 that a predetermined update operation has been performed. As a result, the reproduced image displayed on the monitor screen is updated to another reproduced image.

  When a deletion operation is performed by the user's operation of the key 44, the system controller 42 gives a notification to the CPU 40 that the deletion operation has been performed. The CPU 40 reads FAT1 from the recording medium 34 through the I / F 30. The read FAT1 is written in the work area 24c of the SDRAM 24 and stored in the flash memory 36. Subsequently, the CPU 40 reads the file information of the JPEG file currently being reproduced from the root directory 34 f of the recording medium 34. The read file information is written to the work area 24 c of the SDRAM 24 and is stored in the flash memory 36. Thus, a copy of FAT1 and file information is saved in the work area 24c and saved in the flash memory 36.

  After the saving process is completed, the CPU 40 deletes the file information from the root directory 34f and updates FAT1 and FAT2. As a result, the JPEG file currently being reproduced is substantially deleted from the recording medium 34.

  When the restoration operation is performed by the user operating the key 44 after the deletion operation, the system controller 42 notifies the CPU 40 that the restoration operation has been performed. The CPU 40 reads FAT1 saved in the work area 24c through the memory control circuit 22, and records the read FAT1 on the recording medium 34 through the I / F 30. The FAT1 and FAT2 recorded on the recording medium 34 are updated by the FAT1 saved in the work area 24c. The CPU 40 also reads the file information saved in the work area 24 c through the memory control circuit 22 and records the read file information on the recording medium 34 through the I / F 30. As a result, the file information deleted in response to the deletion operation is restored. The JPEG file deleted by the deletion operation is restored by such processing.

  Therefore, the FAT1 and the deleted file information at the time before the deletion operation are returned from the flash memory 36 to the recording medium 34 by the restoration operation after the deletion operation. By returning the FAT1 and the file information copied to the flash memory 36 to the recording medium 34 as they are, the recording medium 34 can be quickly returned to the state before the deletion operation. Further, by copying FAT1 and file information to the non-volatile flash memory 36, it is possible to restore the JPEG file deleted before the power is turned off.

  Here, the attachment / detachment of the recording medium 34 is monitored by the system controller 42. The system controller 42 operates by supplying power from the backup device 46. When the recording medium 34 is attached / detached, a variable indicating that the recording medium 34 has been attached / detached is recorded in a register 42r formed in the system controller 42. On the other hand, when the backup power supply is lost and the system controller 42 stops, the variable recorded in the register 42r is reset. In other words, if the variable recorded in the register 42r is reset, it is determined that the system controller 42 has stopped. As a result, it can be confirmed whether or not the recording medium 34 has been attached / detached with the power off. The CPU 30 is stopped when the power is off.

  Therefore, since the attachment / detachment of the recording medium 34 cannot be confirmed while the system controller 42 is stopped, the reliability of the FAT1 and the file information stored in the flash memory 36 at the time of the deletion operation cannot be ensured. As for FAT1 and file information to be written in the SDRAM 24 immediately after power-on, the FAT1 and file information recorded in the recording medium 34 at the time of power-on operation are written in the SDRAM 24. Thus, the reliability of FAT1 and file information is ensured.

CPU40 executes in parallel a plurality of tasks including the main task shown in FIG. 4, the imaging task shown in FIG. 5, and the reproduction tasks shown in FIGS. 6 to 8. Note that control programs corresponding to these tasks are stored in the flash memory 36.

  When the power-on operation is performed, initialization processing is performed in step S1 shown in FIG. As a result, the work area 24c of the SDRAM 24 shown in FIG. 2 is cleared. In step S3, it is determined whether or not the flash memory 36 has FAT1 and file information. If YES here, it is determined in a step S5 whether or not the system controller 42 has been stopped. That is, as described above, it is determined whether or not the variable recorded in the register 42r is reset. If the variable is reset, it is determined that the controller 42 is stopped in the power-off state, and the FAT1 and file information recorded in the recording medium 34 and the FAT1 and file information stored in the flash memory 36 at the time of the deletion operation Are judged to be inconsistent and the reliability of data management needs to be maintained, so the process proceeds to step S13.

  On the other hand, if the variable has not been reset, it is determined in step S7 whether or not the recording medium 34 has been attached or detached. That is, the variable recorded in the register 42r is read, and it is determined whether or not the recording medium 34 has been attached / detached according to the variable. If the recording medium 34 is attached / detached, it is necessary to maintain the reliability of data management. Therefore, the process proceeds to step S13. If the recording medium 34 is not attached / detached, the FAT1 and file information stored in the flash memory 36 are stored. Then, it is determined that the file is the FAT1 and file information to be read in the restoration operation, and the process proceeds to step S9.

  In step S9, FAT1 stored in the flash memory 36 is overwritten on the work area 24c, and in step S11, the file information stored in the flash memory 36 is overwritten on the work area 24c. In this way, FAT1 and file information are transferred to the flash memory 36 to the SDRAM 24.

  In step S13, FAT1 of the recording medium 34 is saved in the work area 24c. In step S15, FAT1 of the work area 24c is saved in the flash memory 36.

  In step S17, the flag Frcv is set to “1”. The flag Frcv is a flag for determining whether or not the JPEG file in response to the restoration operation can be restored. “1” indicates that recovery is possible, and “0” indicates that recovery is not possible. In response to the saving of FAT1 in steps S9 to S15, “1” is first set.

  In step S19, it is determined whether or not the currently selected mode is a camera mode. If YES here, the shooting task is activated in step S21. If NO, the reproduction task is activated in step S23. When the process of step S21 or S23 is completed, it is determined in step S25 whether or not a mode switching operation has been performed. If “YES” here, the running task is stopped in a step S27, and thereafter, the process returns to the step S19.

  Referring to FIG. 5, it is determined in step S31 whether or not a shooting operation has been performed. If “YES” here, the photographing process is performed in a step S33. As a result, JPEG data corresponding to the object scene image at the time when the photographing operation is performed is ensured in the JPEG area 24b (see FIG. 2A) of the SDRAM 24.

  In step S35, a JPEG file including JPEG data stored in the JPEG area 24b is recorded in the data area 34g of the recording medium 34. In step S37, file information for identifying the JPEG file thus recorded is written to the root directory 34f, and in step S39, FAT1 and FAT2 are updated so that a link is formed between the clusters in which the JPEG file is recorded.

When the updating of FAT1 and FAT2 is completed, the flag Frcv is set to “0” in step S41. That is, as a result of the processing in step S39, consistency between the FAT1 saved in the work area 24c and the FAT1 recorded in the recording medium 34 can no longer be secured, so that the deleted JPEG file is restored. In order to clarify that this is impossible, the flag Frcv is set to “0”. When the process of step S51 is completed, the process returns to step S31.

  Referring to FIG. 6, a certain file number is designated in step S51, and reproduction processing is performed on the JPEG file corresponding to the designated file number in step S53. As a result, a reproduced image is output from the LCD monitor 28. When the file number update operation is performed, YES is determined in step S55, the file number is updated in step S57, and the process returns to step S53. As a result, the reproduced image output from the LCD monitor 28 is updated.

  When the deletion operation is performed, YES is determined in step S59, and the state of the flag Frcv is determined in step S61. If the flag Frcv is “1”, the process directly proceeds to step S69. If the flag Frcv is “0”, FAT1 of the recording medium 34 is saved in the work area 24c in step S63, and FAT1 of the work area 24c is saved in step S65. The data is stored in the flash memory 36, and the step S67 flag Frcv is set to “1”. Therefore, FAT1 at the time of accepting the deletion operation is always saved in the work area 24c. The size of FAT1 is fixed, and the retracted position of FAT1 is also fixed. For this reason, FAT1 already saved in the work area 24c is updated to the latest FAT1.

  In step S69, the deletion process is executed, and in the subsequent step S71, the file number is updated. When the update process is completed, the process returns to step S53. When the restoration operation is performed, YES is determined in step S73, the restoration process is performed in step S75, and the process returns to step S55.

  The deletion process in step S69 is executed according to a subroutine shown in FIG. First, it is determined in step S81 whether or not there is free space in the work area 24c to which file information can be added. If “YES” here, the process proceeds to a step S85 as it is, and the file information of the JPEG file currently reproduced is saved in the work area 24c. On the other hand, if NO is determined in step S81, the oldest file information saved in the work area 24c is deleted in step S83, and then the file information of the recording medium 34 is saved in the work area 24c in step S85. In step S87, the file information is saved in the flash memory 36. In step S89, the file information of the JPEG file currently being reproduced is deleted from the root directory 34f of the recording medium 34. In the subsequent step S99, FAT1 and FAT2 are updated corresponding to the deletion process in step S89. When updating of FAT1 and FAT2 is completed, the routine returns to the upper layer routine.

  The restoration process in step S73 shown in FIG. 6 is executed according to a subroutine shown in FIG. First, in step S101, the state of the flag Frcv is determined. If the flag Frcv is “0”, the process returns to the upper hierarchy routine. On the other hand, if the flag Frcv is “1”, FAT1 in the work area 24c is transferred to the recording medium 34 in step S103. That is, each of FAT1 and FAT2 of the recording medium 34 is overwritten by FAT1 saved in the work area 24c. In step S105, the file information saved in the work area 24c is returned to the root directory 34f of the recording medium 34. As a result, the FAT1 and file information are transferred to the work area 24c immediately after the power is turned on, so that the FAT1 and file information transferred to the work area 24c are quickly transferred to the recording medium.

  When a shooting operation is performed between multiple deletion operations, the file information saved in response to the deletion operation before the shooting operation and the file information saved in response to the deletion operation after the shooting operation Are mixed in the work area 24c. In step S105, the file information saved in response to the deletion operation after the photographing operation is returned to the root directory 34f among these file information. When the process of step S105 is completed, the process returns to the upper layer routine.

  For reference, when a 2 GB memory card is used as the recording medium 34, the time required for writing FAT1 is about 62.5 milliseconds. The time required for writing file information corresponding to one file is 1.43 ms. For this reason, for example, when 100 JPEG files are restored, the time required for the restoration is 205.5 (= 62.5 + 1.43 × 100) milliseconds.

  In this embodiment, still image data is assumed as content data to be recorded on a recording medium, but moving image data, audio data, text data, and the like can also be assumed as content data.

It is a block diagram which shows the structure of one Example of this invention. It is an illustration figure which shows an example of the mapping state of SDRAM applied to FIG. 1 Example. It is an illustration figure which shows an example of the mapping state of the recording medium applied to FIG. 1 Example. It is a flowchart which shows a part of operation | movement of CPU applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of CPU applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of CPU applied to the FIG. 1 Example. FIG. 12 is a flowchart showing yet another portion of behavior of the CPU applied to the embodiment in FIG. 1. It is a flowchart which shows a part of other operation | movement of CPU applied to the FIG. 1 Example.

Explanation of symbols

10 ... Digital camera 14 ... Image sensor 24 ... SDRAM
34 ... Recording medium 36 ... Flash memory 40 ... CPU
42 ... System controller 46 ... Backup device

Claims (7)

First writing means for writing a file containing the content data when the recording mode is selected in the recording medium,
Second writing means for writing the file identification information for identifying a file written by the first writing means to said recording medium,
First update means for updating file arrangement information recorded on the recording medium in association with a writing process of the first writing means to manage the position of the file recorded on the recording medium;
Receiving means for receiving a delete operation when a particular mode is selected,
First duplicating means for duplicating the file arrangement information recorded on the recording medium to a nonvolatile first internal memory in response to an initial deletion operation accepted by the accepting means after the specific mode is selected;
Second duplicating means for duplicating file identification information of a desired file recorded on the recording medium to the first internal memory in response to a delete operation accepted by the accepting means;
Deleting means for deleting from the recording medium the file identification information subjected to the replication processing by the second replication means;
Second update means for updating the file arrangement information recorded on the recording medium in association with the deletion process of the deletion means ;
Third writing means for writing the file allocation information, and file identification information stored in the first internal memory when the revival operation is performed before Symbol certain mode to the recording medium,
A mounting means for detachably mounting the recording medium;
First determination means for determining whether or not the recording medium is attached / detached after receiving a deletion operation; and
A content processing apparatus comprising: an activating unit that activates the third writing unit when the determination result of the first determining unit is negative . The third write means, first transfer means for transferring the file allocation information, and file identification information stored in response to said first internal memory to power on the second internal volatile memory, and the revival operation in response includes a second transfer means for transferring the file allocation information, and file identification information transferred by the first transfer means to said recording medium, according to claim 1 Symbol placing content processing apparatus. The first determining means is caused by recording means for recording specific identification information indicating whether or not the recording medium has been attached / detached, supply means for supplying power to the recording means, and suspension of the supply means A second determining means for determining whether or not the specific identification information is invalidated;
The third write means, the discrimination result of the first determination means to perform the writing process when it is negative, the content processing apparatus according to claim 1 or 2 wherein. The third write means are excluded from the candidate writes the file allocation information, and file identification information write processing have been replicated to the second internal memory before being executed in the first writing means, any one of claims 1 to 3 The content processing apparatus described in 1. Further comprising a reproducing means for reproducing a desired file when the playback mode is selected,
The specific mode is said reproduction mode, the deleting operation is received by the receiving means is directed to a file reproduced by said reproducing means, the content processing apparatus of claims 1 4, wherein. The content data is image data, the content processing apparatus according to any one of claims 1 to 5. In the processor of the content processing device,
First write step of writing a file containing the content data when the recording mode is selected in the recording medium removably loaded,
Second write step of writing the file identification information for identifying a file written by the first writing step to said recording medium,
A first update step of updating file arrangement information recorded on the recording medium in association with a writing process of the first writing step in order to manage a position of the file recorded on the recording medium;
Reception step of receiving a delete operation when a particular mode is selected,
A first duplication step of duplicating the file arrangement information recorded on the recording medium to a nonvolatile first internal memory in response to an initial deletion operation accepted by the acceptance step after the specific mode is selected;
A second duplication step of duplicating the file identification information of a desired file recorded on the recording medium to the first internal memory in response to the deletion operation accepted by the acceptance step;
A deletion step of deleting from the recording medium the file identification information subjected to the replication process in the second replication step;
A second update step of updating the file arrangement information recorded on the recording medium in association with the deletion process of the deletion step ;
Third write step of writing the file allocation information, and file identification information stored in the first internal memory when the revival operation is performed before Symbol certain mode to the recording medium,
A first determination step of determining whether or not the recording medium has been removed after receiving a deletion operation; and
A content processing program for executing an activation step for activating the third writing step when a determination result of the first determination step is negative .

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