JP3998015B2 - Data editing apparatus and data editing method - Google Patents

Description

  The present invention relates to a technique for editing data. More specifically, the present invention relates to a data editing apparatus for editing video / audio data without deleting.

  HDD (Hard Disk Drive) recorders, DVD (Digital Versatile Disc) recorders and other digital data recording devices have a larger data storage capacity and record a large amount of digital data compared to recording devices such as VTRs (Video Tape Recorders). be able to. Also, regarding access to an area where data is recorded, since the digital data recording apparatus can perform so-called random access, editing of recorded data is easier than when the recording medium is a tape. .

  Regarding editing of this data, for example, Japanese Patent Application Laid-Open No. 2003-45161 (Patent Document 1) discloses an editing method in which editing processing such as deletion and insertion of a DVD video stream can be easily performed. This editing method includes a step of identifying a start point and an end point of a deletion portion in a data stream of a DVD video format, a step of storing address data immediately before the start point of the deletion portion and address data immediately after the end point, and a deletion Dividing the data stream before editing with the data stream immediately before the start point of the part as the first data file and the data stream immediately after the end point of the deleted part as the second data file; and the first data file Storing the start point address data and end point address data of the second data file, the start point address data and end point address data of the second data file in a file index, and the end point of the first data file and the start point of the second data file. Merging and the first data file Less data and so that the address data of the second data file are matched, and a step of referring to the file index rewrites the address data of the data stream of the second data file.

  According to the above editing method, the front part and the rear part of the deleted part are each handled as one data file. Therefore, the addresses in one data file are continuous. Therefore, if the addresses of the start point and end point are stored in the file index in advance, after combining both data files, the file index is referenced and the start address and end address of the rear file are rewritten with simple logic. Can do. Such address rewriting processing is easily realized using a general-purpose CPU (Central Processing Unit) and memory.

  Japanese Patent Laying-Open No. 2000-285653 (Patent Document 2) discloses an information recording / reproducing apparatus capable of easily changing a part of a file when managed so as to be accessible in units of files. This apparatus includes a setting unit that sets a part of the plurality of blocks constituting the one file to be difficult to reproduce by changing the data of the reproduction order of the plurality of blocks constituting the one file.

  According to the information recording / reproducing apparatus described above, even when file management is performed so that access is possible in units of files, it is possible to easily set some blocks to be difficult to reproduce by changing the data in the reproduction order.

  Japanese Patent Laid-Open No. 2003-158714 (Patent Document 3) has a limited recording space in which it is not necessary to insert a transport packet for padding when deleting the middle of a file and combining the remaining portions. Disclosed is an information recording apparatus capable of effectively using The apparatus includes a recording control unit that records an input data stream on the logical block in a fixed-length packet format different from the data size of the logical block of the recording medium. The recording control unit once terminates the data stream at an arbitrary position. Then, the recording control unit records the data stream before the end point and the data stream immediately after the end point as separate data files. Further, the recording control unit also records the relationship information between the data files.

  According to the above information recording apparatus, it is not necessary to insert a transport packet for padding. For this reason, a limited recording space can be used effectively.

  Also, if you want to overwrite the already recorded video / audio data with externally input video / audio data or delete only a part of the video / audio data, you can easily execute the subsequent editing operations. There is a request.

  Thus, for example, Japanese Patent Laid-Open No. 2000-311469 (Patent Document 4) discloses a disk control device that can easily execute the editing operation. This apparatus includes an interface unit that receives externally input video / audio data, an index generation unit that analyzes the received video / audio data and generates index information, and index information management that manages the generated index information A recording / playback unit for performing video / audio data writing processing to the disk device and reading processing from the disk device, a recorded area in which the video / audio data is recorded in the recording area of the disk device, and video / audio data. A video / audio data management unit that divides and manages the unrecorded areas that are not recorded. When the index generation unit overwrites another recorded video / audio data in the recorded area, the index information corresponding to the video / audio data in the overwritten area and the video in the other area divided by the video / audio data in the overwritten area Index information corresponding to the audio data is generated.

  In addition, when editing data stored in a large-capacity data recording medium, in order to prevent an increase in the amount of data, a function that prevents the same edited data as that before editing from being recorded on the recording medium is required. It has been.

  Thus, for example, Japanese Patent Laid-Open No. 2000-175134 (Patent Document 5) discloses a data recording / reproducing apparatus having the function. This apparatus records / reproduces file data on / from a randomly accessible recording medium, first head position data indicating a head position on the recording medium for each file data, and a first length indicating a recording length from the head position. 1st entry information having 1 record length data, 2nd start position data indicating a start position from the start position when the file data is edited, and end position data indicating an end position from the start position And a storage unit for storing second entry information. When reproducing the edited data, the recording / reproducing unit reproduces the file data recorded on the recording medium based on the second entry information.

According to the data recording / reproducing apparatus, the same audio / video data as the edited result can be reproduced without recording the edited data on the recording medium. As a result, it is possible to prevent the capacity from being increased by the amount of data after editing, so that audio / video data can be edited for a long time.
JP 2003-45161 A JP 2000-285653 A JP 2003-158714 A JP 2000-311469 A JP 2000-175134 A

  However, according to the editing method disclosed in Japanese Patent Application Laid-Open No. 2003-45161, processing for rewriting address data of a data stream of a file to be combined in editing processing is performed. This editing method is effective only for DVDs recorded in the DVD video format or other specific formats. Therefore, there is a problem that it cannot be applied to other data recording media.

  In addition, according to the information recording / reproducing apparatus disclosed in Japanese Patent Laid-Open No. 2000-285653, some of the blocks constituting the video / audio file are set to be difficult to reproduce. Therefore, once such a setting is made, there is a problem that the block cannot be reproduced unless the setting is restored. That is, the flexibility of editing the file may be impaired.

  Further, according to the information recording apparatus disclosed in Japanese Patent Laid-Open No. 2003-158714, unnecessary data is deleted during editing. Therefore, the original video / audio file may not be restored.

  Further, according to the disk control device disclosed in Japanese Patent Laid-Open No. 2000-311469, when a user requests to erase a block, the data of the block is invalidated. Therefore, there is a problem that the block cannot be reproduced unless the invalid setting is restored. That is, the flexibility of editing the file may be impaired.

  According to the data recording / reproducing apparatus disclosed in Japanese Patent Laid-Open No. 2000-175134, the original video / audio file is reproduced during the editing process, and the user includes the reproduction contents while referring to the reproduction content. I had to input the file data.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a data editing apparatus capable of editing a video / audio file without deleting a file that is not to be reproduced. That is.

  Another object of the present invention is to provide a data editing apparatus that allows a user to easily edit a video / audio file.

  In order to solve the above-described problems, according to one aspect of the present invention, the data editing device stores a video / audio storage unit that stores a video / audio file in a random accessible manner, a predetermined data size, and a video / audio file. Management data storage means for storing data for management. The data size is data that determines the size of the file in the video / audio storage means. The data editing apparatus further includes: a determination unit that determines whether the video / audio file can be logically divided for each data size based on an input of an instruction to edit the video / audio file; When it is determined that the file can be divided, a file dividing means for generating a plurality of block files by logically dividing the audio / video file for each data size, and the number of the generated block files Each block file is stored in accordance with the generation of the plurality of block files and the area securing means for securing the area according to the number of the plurality of block files in the calculation means for calculating Each address for specifying the location is associated with the data for specifying each of the plurality of block files in the area. The subsequent block file based on the association means to be delivered, the input of the instruction to select the playback block file to be played, and the input of the instruction to select the subsequent block file to be played back after the selected block file In response to an input of an instruction to delete the block file and an editing means for storing the address of the block in association with the playback block file and storing it in the area reserved for the playback block file, the deletion is instructed. In response to an input of an instruction to delete the block file address and an instruction to play the block file, the start address of the playback start block file instructed to play and other blocks associated with the playback start block file Play the playback start block file based on the file address And a raw means.

  According to another aspect of the present invention, the data editing apparatus includes a video / audio storage unit for storing a video / audio file, a data size for determining a file size in the video / audio storage unit, and data for managing the video / audio file. A management data storage means for storing the file, a file dividing means for generating a plurality of block files by dividing the video / audio file by data size based on an input of an editing instruction for editing the video / audio file, and editing Based on the input of the instruction, the management data storage means stores the area securing means for securing the area according to the number of the plurality of block files, and each block file is stored according to the generation of the plurality of block files. Position data for specifying the location of the data, data for specifying each of the plurality of block files, and Based on association means for storing in association with each other, input of an instruction to select a playback block file to be played back, and input of an instruction to select a subsequent block file to be played back after the selected block file And editing means for associating the position data of the subsequent block file with the reproduction block file.

  Preferably, the video / audio storage means can randomly access an area in which the video / audio file is stored.

  Preferably, the editing unit associates the position data of the subsequent block file with the reproduction block file and stores them in an area reserved for the reproduction block file.

  Preferably, the data editing apparatus further includes determination means for determining whether the video / audio file can be divided for each data size based on an input of an editing instruction. When it is determined that the video / audio file can be divided, the file dividing unit generates a plurality of block files by dividing the video / audio file into data sizes.

  Preferably, the determination means determines whether or not the video / audio file can be logically divided for each data size. The file dividing means logically divides the video / audio file.

  Preferably, the area securing means causes the calculation means for calculating the number of the plurality of block files generated based on the editing instruction and the management data storage means to secure an area according to the number of the plurality of block files. Means.

  Preferably, the data editing apparatus further includes a deletion unit that deletes the position data of the block file instructed to be deleted from the area in response to an input of an instruction to delete the block file.

  Preferably, the data editing apparatus responds to an input of an instruction to play back the block file, and the position data of the playback start block file instructed to be played back and the position of another block file associated with the playback start block file Reproduction means for reproducing the reproduction start block file based on the data is further provided.

  According to the data editing apparatus of the present invention, files that are not subject to playback are not deleted. Therefore, even when the file is edited again, the file can be reproduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  With reference to FIG. 1, a DVD recorder 100 which is an aspect of a data editing apparatus according to the present invention will be described. FIG. 1 is a block diagram showing a hardware configuration of DVD recorder 100.

  The DVD recorder 100 includes an input unit 115, a light receiving unit 116, a tuner 104, an A / D (Analog to Digital) converter 105, a control unit 200, a sub-control unit 102, a compression processing unit 106, and a decompression unit. Processing unit 107, HDD control unit 108, DVD drive device 110, hard disk device 400, memory 500, OSD (On Screen Display) image generation circuit 114, D / A (Digital to Analog) converter 112, Output I / F (Interface) 117. The hard disk device 400 includes a hard disk 410. The memory 500 includes a management list 510. DVD recorder 100 is connected to television 4000 via cable 190. The DVD drive device 110 is loaded with a DVD. The disc that can be mounted on the DVD drive device 110 is not limited to a DVD, and may be any disc that can read and write data with a pickup (not shown) provided in the DVD drive device 110.

  The control unit 200 sends control signals to the sub-control unit 102, the tuner 104, the A / D converter 105, the HDD control unit 108, the DVD drive device 110, the D / A converter 112, and the OSD according to the control target. It transmits to the image generation circuit 114.

  The input unit 115 is realized by an operation panel provided on the front surface of the DVD recorder 100, for example. The input unit 115 outputs a signal corresponding to the operation to the control unit 200 in response to an operation input from the outside. The light receiving unit 116 receives a remote control signal transmitted from a remote control terminal (not shown). Signals output from the input unit 115 and the light receiving unit 116 are input to the control unit 200.

  The tuner 104 selects a signal from an antenna (not shown) by a channel designated by the control unit 200. An analog signal output from the tuner 104 or an analog signal input from the external I / F is input to the A / D converter 105. The A / D converter 105 converts the analog signal into a digital signal based on the control signal from the control unit 200, and outputs the converted signal to the compression processing unit 106. If the input signal is only a digital signal, the A / D converter 105 may not be provided.

  The control unit 200 causes the sub-control unit 102 to output signals for controlling the operations of the compression processing unit 106 and the decompression processing unit 107, respectively. Note that the operations of the compression processing unit 106 and the decompression processing unit 107 may be directly controlled by the control unit 200.

  The compression processing unit 106 performs a predetermined compression process on the video / audio data output from the A / D converter 105. The converted data is output to the HDD control unit 108 or output to the DVD drive device 110 in accordance with the control of the sub-control unit 102. The converted video / audio data is written to the hard disk 410 by the HDD control unit 108. Alternatively, the data is written on the DVD 111 by the DVD drive device 110.

  The HDD control unit 108 controls recording and reproduction of video / audio data with respect to the hard disk device 400 based on a control signal from the control unit 200. That is, the HDD control unit 108 outputs an instruction to write data to a data recording / reproducing head (not shown) included in the hard disk device 400 based on the recording command output from the control unit 200. Based on the instruction, the data recording / reproducing head writes the video / audio data output from the compression processing unit 106 in a predetermined area of the hard disk 410. Further, the HDD control unit 108 outputs a command for reading the video / audio data from the hard disk 410 to the data recording / reproducing head based on the reproduction command output from the control unit 200. The data recording / reproducing head accesses a designated area, reads out and outputs video / audio data stored in the area.

  The DVD drive device 110 executes writing and reproduction of video / audio data on the DVD 111 by controlling the pickup based on a command from the control unit 200.

  The video / audio data read from the hard disk device 400 or the video / audio data read from the DVD 111 is input to the decompression processing unit 107. The decompression processing unit 107 restores the video / audio data and outputs it to the D / A converter 112.

  The OSD image generation circuit 114 generates image data for displaying a control screen on a display device connected to the DVD recorder 100, for example, the television 4000, based on a signal output from the control unit 200. The OSD image generation circuit 114 outputs the generated data to the D / A converter 112. The audio / video signal output from the expansion processing unit 107 is further input to the D / A converter 112. The D / A converter 112 combines these data, converts the digital signal into an analog signal, and outputs the analog signal. The output IF 117 outputs the video / audio signal from the D / A converter 112 to the outside. When this signal is output, the television 4000 connected to the DVD recorder 100 displays video and outputs audio.

  The memory 500 stores data necessary for the control unit 200 to execute processing. This data is stored, for example, as a management list 510, and is referred to when the control unit 200 executes processing. The data structure in the memory 500 will be described later.

  With reference to FIG. 2, the structure of the control part 200 with which the DVD recorder 100 is provided is demonstrated. FIG. 2 is a block diagram showing a functional configuration of control unit 200. The control unit 200 is configured by a circuit for realizing a predetermined operation, for example. Alternatively, the control unit 200 is realized by causing a CPU (Central Processing Unit) or other arithmetic processing device to execute a program stored in the memory 500.

  Control unit 200 includes a determination unit 210, a file division unit 220, a calculation unit 230, an area securing unit 240, an association unit 250, an editing unit 260, a deletion unit 270, and a playback unit 280.

  Based on the input of an instruction to edit the video / audio file, the determination unit 210 determines whether the file can be logically divided for each predetermined data size. The video / audio file is, for example, program data recorded by the HDD control unit 108 via the tuner 104. The data size may be determined in advance or may be arbitrarily set according to a user operation. In order to enable setting by the user, a screen for accepting input of the data size is displayed, and data input to a predetermined area on the screen is accepted as a data size and stored in a predetermined area of the memory. Good.

  The file dividing unit 220 generates a plurality of block files by logically dividing the video / audio file for each data size. Preferably, the file dividing unit 220 executes the dividing process when it is determined that the video / audio file can be divided.

  The calculation unit 230 calculates the number of block files generated by the division. The area securing unit 240 secures an area corresponding to the calculated number of block files in a predetermined area of the memory 500. For example, when the number of block files is calculated, the area securing unit 240 secures a data area having a predetermined size in an area secured in advance for editing the video / audio file. As a result, the address for specifying each area is stored in the memory 500.

  The associating unit 250 associates the position data for specifying the location where the block file is stored with the identification data for specifying each of the plurality of block files and stores them in the memory 500. Preferably, the associating unit 250 associates the above address with a file name for specifying each block file and writes it in a predetermined area of the memory 500.

  Based on the input of an instruction to select a block file to be played back and the input of an instruction to select another block file to be played back following the selected block file, the editing unit 260 The position data and the block file to be reproduced are associated with each other and stored in an area reserved for the reproduction block file. Preferably, the editing unit 260 associates the address of the subsequent block file with the playback block file.

  In response to an input of an instruction to delete a block file, the deletion unit 270 deletes position data for specifying the position of the block file instructed to delete from the area secured in the memory 500. Preferably, the deletion unit 270 deletes the address of the block file instructed to be deleted from the area.

  In response to the input of the instruction to reproduce the block file, the reproducing unit 280 converts the position data of the reproduction start block file instructed to reproduce and the position data of other block files associated with the reproduction start block file. Based on this, the playback start block file is played back. Preferably, the playback unit 280 plays back the audio / video data from the playback start block file with reference to the address of the playback start block file and the address of another block file. When the playback of the playback start block file ends, the playback unit 280 continues to play back other block files associated with the file.

  Here, the relationship between the management data and the video / audio file in the DVD recorder 100 will be described with reference to FIG. FIG. 3 is a diagram for explaining the correspondence between the management data secured in the memory area of the memory 500 and the video / audio file recorded on the hard disk 410. Here, the management data includes, as items, a start block address, a block length, a file name, and a connection destination block address.

  Referring to FIG. 3, the video / audio file initially stored in hard disk 410 is, for example, video / audio file 300. When an editing process described later is executed, the video / audio file file 300 is divided into block files 310, 312, and 314. At this time, management data for managing each block file is generated in the memory area. That is, management data for managing the block file 310 is generated as the item 350. Management data for managing the block file 312 is generated as an item 352. Management data for managing the block file 314 is generated as an item 354.

  Thereafter, when the user executes an editing process, for example, a process of deleting the block 310 so as not to reproduce the video of the first block file, the item 350 is at least logically deleted from the memory area. This item is shown as item 360. Thus, the items to be managed by the block file are items 362 and 364. That is, the second and subsequent block files 312 and 314 are used as reproducible video / audio data.

  After such editing processing is completed, each block is set as one reproduction file. For example, when the user sets the name of a file, the file is logically combined as an editing file 320, and one file Is generated. At this time, data for managing the editing file 320 is generated as an item 372.

  A data structure in the DVD recorder 100 will be described with reference to FIGS. FIG. 4 is a diagram conceptually showing one mode of data storage in hard disk 410. FIG. 5 is a diagram conceptually showing one mode of data storage in management list 510 included in memory 500.

  Referring to FIG. 4A, video / audio file “AV000.MPG” already recorded in hard disk 410 is stored in area 420. This file includes a signal acquired by the tuner 104, a signal input via an external I / F, data dubbed from the DVD 111, and the like. When an editing process is started on such a video / audio file as described later, the file is logically divided into a plurality of block files.

  That is, the block file “AV000 — 00.MPG” is stored in the area 422 as shown in FIG. Similarly, block files “AV000 — 01.MPG” and “AV000 — 02.MPG” generated by division are stored in areas 424 and 426, respectively. Here, since the video / audio file is logically divided, the generated block file is conceptual. Therefore, data for representing these divisions is generated and stored in memory 500.

  Referring to FIG. 5A, in memory 500, a block number for specifying a block file, a start address for identifying an area in which the block file is stored, the name of the block file, Stored in association with the address of another block file following the block file.

  That is, when the video / audio file editing process is executed, a block number generated in accordance with the execution is stored in the area 512. The start address acquired by the execution is stored in area 514. This address is sequentially calculated based on the leading address of the area where the video / audio file before division is stored and a preset data size. The name of each block file is stored in area 516. The initial value of the connection destination address of each block file is stored in area 518 after the editing process is started and before the user inputs. That is, the addresses are sequentially stored in the area 518 in the order in which the block files are arranged. As a result, the original video / audio file is continuously reproduced when editing is not performed.

  For example, in the record R530, the address “0100” in which the block number “BLOCK001” that is the next block file is stored is stored in the connection destination address of the block number “BLOCK000”. In the record R532, an address “0200” representing an area in which the next block file “BLOCK002” is stored is stored in the connection destination address of the block number “BLOCK001”.

  In such an initial state, when the user executes a predetermined operation on the remote control terminal (not shown) or the input unit 115 to start the editing process, the connection destination address of each block file is changed according to the process. Here, the editing process refers to a process of selecting a block file to be reproduced from block files generated by dividing the original video / audio file.

  Referring to FIG. 5B, for example, block file AV000_00. After the MPG (area 516), the block file AV000_02. When the editing process for reproducing the MPG is executed, the block file AV000_00. The address “0200” is stored as the MPG connection destination address (record R530). As a result, the block file AV000_00. When the reproduction of MPG is finished, the block file AV000_02. MPG playback is continued.

  On the other hand, the user makes a block file AV000_01. When an editing process for reproducing only MPG is executed, the block file AV000_01. The connection destination address of the MPG is “NULL” (record R532). That is, the block file AV000_01. Since the file following MPG is not specified, the block file AV000_01. When the MPG playback ends, the video / audio playback ends.

  The data structure in the memory 500 will be further described with reference to FIG. FIG. 6 is a diagram showing one mode of storing management data generated in accordance with editing of the video / audio file.

  When a user executes a predetermined editing process and a block file is generated as shown in FIG. 5, data for managing the file generated by editing is generated. That is, in the memory 500, the edit file number, the head block, and the edit contents are stored in association with each other. The edit file number is a number for specifying each file that is automatically reproduced when the user executes the edit process. The first block is data for specifying a block file that is referred to first in order to reproduce each edited file. The edited content is text data generated by data that can be arbitrarily set so that the user can easily grasp the content of the edited file. For example, as shown in the record R560, the block file AV000_00. MPG and AV000 — 02. The edit file created to reproduce the MPG starts from the BLOCK000 block. The user can display the divided video / audio file on the DVD recorder 100 by designating the file whose edit file number is “001” and issuing a reproduction instruction.

  The record R562 stores an edit file associated with the block file specified by BLOCK001. Therefore, when the user selects the edit file number “002” and inputs a reproduction instruction, the block file AV000 — 01. MPG-only video is played back. In this way, even when one video / audio file is divided to create a plurality of editing files, various reproductions can be realized by specifying each editing file number.

  A control structure of DVD recorder 100 according to the present embodiment will be described with reference to FIGS. FIG. 7 is a flowchart showing the procedure of file editing processing executed by control unit 200 of DVD recorder 100. FIG. 8 is a flowchart showing a procedure of file division processing executed by control unit 200.

  In step S710, control unit 200 obtains file access authority. In step S720, control unit 200 reads data representing the usage status of the file. In step S730, control unit 200 determines whether the audio / video file is in use. If it is determined that the file is in use (YES in step S730), the process proceeds to step S770. If not (NO in step S730), the process proceeds to step S800.

  In step S800, control unit 200 executes file division processing, which will be described later. When this process is executed, the video / audio file is logically divided to generate a plurality of block files. In step S740, control unit 200 determines whether or not file division is impossible. If it is determined that the file cannot be divided (YES in step S740), the process proceeds to step S770. If not (NO in step S740), the process proceeds to step S750. In step S750, control unit 200 assigns the address of the connection destination block file for each block file generated by the division. In step S760, control unit 200 releases the access authority for the video / audio file. In step S770, a predetermined abnormality process is executed. Here, the abnormal process refers to a process for displaying a message notifying that the file cannot be divided. When this processing is executed, it is displayed that the television 4000 connected to the DVD recorder 100 cannot divide the video / audio file designated by the user.

  Referring to FIG. 8, in step S810, control unit 200 detects the start of editing of a recorded file recorded on hard disk 410. In step S820, control unit 200 divides the recorded file into block files having a predetermined size. In step S830, control unit 200 acquires the number of block files generated by the division. In step S840, control unit 200 secures an area corresponding to the number of block files in a predetermined area of memory 500. In step S850, control unit 200 assigns each block file to each area. In step S860, control unit 200 stores a value indicating that each block file is connected in each area of the connection destination and connection source. In step S870, control unit 200 generates and stores data indicating that the video / audio file has been normally divided.

  FIG. 9 is a flowchart showing the procedure of the reproduction process executed by control unit 200. This process is executed, for example, when the user presses a playback button (not shown) on the remote control terminal (not shown) or when a user presses a playback button (not shown) provided in the input unit 115.

  In step S910, control unit 200 detects selection of a recorded file to be reproduced. This detection is performed, for example, when the user performs an operation of selecting a specific file on the recorded file list display screen. That is, data representing that a file has been selected is input to control unit 200.

  In step S920, control unit 200 detects a playback instruction. This detection is performed based on a signal input from the light receiving unit 116 or the input unit 115. In step S930, control unit 200 reads the address of the first block and the address of the connection destination block of the selected file from memory 500. In step S940, control unit 200 reads and reproduces the video / audio data from the area specified by the read address on hard disk 410.

  In step S950, control unit 200 determines whether the data of the connection destination block file further includes data of another connection destination block file. If there is more data of another connection destination block file (YES in step S950), the process proceeds to step S960. If not (NO in step S950), the process ends.

  In step S960, control unit 200 reads the address of another connection destination block file. In step S970, control unit 200 outputs a command for reading video / audio data from the area specified by the address read in hard disk 410. Thereby, the video / audio data is reproduced. Thereafter, the process returns to step S950.

  With reference to FIG. 10, a screen displayed on television 4000 to which DVD recorder 100 according to the present embodiment is connected will be described. FIG. 10 is a diagram illustrating an aspect of a screen displayed on television 4000 when DVD recorder 100 is executing an editing process.

  An image 1010 is a thumbnail image of the video / audio file “AV000.MPG” selected by the user for editing. The images 1024 to 1050 are thumbnail images of block files generated by dividing the video / audio file. These thumbnail images are generated based on the first frame data of each video data, for example.

  An area 1060 stores the name of a file generated by editing the file. That is, data for identifying an edit file generated by the user selecting a block file can be input. This input is realized, for example, when a user presses an operation button (not shown) to which characters, numbers, etc. are assigned in advance in a remote control terminal (not shown) capable of transmitting a control signal to the DVD recorder 100.

  An area 1070 is an area for the user to input a block file selection / non-selection instruction. For example, when the block files “AV000 — 00.MPG”, “AV000 — 01.MPG”, and “AV000 — 00.MPG” are selected, when the area corresponding to each block file is pressed, each block file is identified in response to the pressing. The data and the data representing the selection are stored in the memory 500 in association with each other. In this case, the display of each area 1070 is switched according to the input of the instruction.

  For example, when no file is selected, the area 1070 is displayed in a state that is predetermined for displaying the initial state. For example, this state is a state in which the area 1070 is displayed in white. When a specific file is selected, the display of the area corresponding to the file is displayed in another color. For example, as shown in FIG. 10, the color is changed to black. In this way, the selection and non-selection status of each block file can be easily identified for the DVD recorder 100 user.

  Alternatively, the user can select a block file to display the image by selecting the images 1020, 1040, and 1050 to be edited by pressing. In this case, as shown in FIG. 10, a display that shows that the selected image is different from the unselected image is performed. For example, the frame of the image may be displayed thickly. This selection is realized, for example, by operating a cursor movement key or an enter key (not shown) provided in a remote control terminal (not shown). Note that the mode of selecting an image displayed on the television 4000 is not limited to the above, and may be other modes.

  After that, when the user presses the image 1080 in order to end the block file editing process, an instruction to confirm the editing is input. As a result, each selected block file can be reproduced as the edit file name “001” shown in the area 1060. That is, when the user inputs a reproduction instruction for the file “001”, the block files “AV000 — 00.MPG”, “AV000 — 02.MPG”, and “AV000 — 03.MPG” are sequentially reproduced. At this time, the block file “AV000 — 01.MPG” is not reproduced. As a result, only the file selected by editing by the user can be played back without deleting the file that is not played back.

  As described above, according to DVD recorder 100 according to the present embodiment, the editing process is started based on a user instruction. That is, the video / audio file to be edited is logically divided into a predetermined size, and a block file is generated. The user selects a file to be edited from each block file, that is, a file to be reproduced, and creates an edited file. That is, the DVD recorder 100 creates only a file selected by the user as a reproducible file without deleting a file that is not to be reproduced. The user can play back the created file.

  Thus, the DVD recorder 100 can function as a data editing apparatus that can edit a video / audio file without deleting a file that does not need to be reproduced.

  At this time, the television 4000 connected to the DVD recorder 100 displays a screen for selecting a block file generated for editing. The user can select only a file desired to be reproduced from the image displayed on the screen. In this way, the user can easily recognize which block file is selected with respect to the original video / audio file (AV000.MPG), thereby improving the operability of file selection. it can.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied to a data recording / reproducing apparatus such as an HDD recorder and a DVD recorder.

It is a block diagram showing the hardware constitutions of the DVD recorder which concerns on embodiment of this invention. It is a block diagram showing the functional structure of the control part with which the DVD recorder which concerns on embodiment of this invention is provided. It is a figure for demonstrating the relationship between the management data and the video / audio file in the DVD recorder which concerns on embodiment of this invention. It is FIG. (1) for demonstrating the data structure in the DVD recorder which concerns on embodiment of this invention. It is FIG. (2) for demonstrating the data structure in the DVD recorder which concerns on embodiment of this invention. It is FIG. (3) for demonstrating the data structure in the DVD recorder which concerns on embodiment of this invention. It is a flowchart (the 1) showing the procedure of the process which the control part of the DVD recorder which concerns on embodiment of this invention performs. It is a flowchart (the 2) showing the procedure of the process which the control part of the DVD recorder which concerns on embodiment of this invention performs. It is a flowchart (the 3) showing the procedure of the process which the control part of the DVD recorder which concerns on embodiment of this invention performs. It is a figure showing the one aspect | mode of the screen displayed on the television to which the DVD recorder which concerns on embodiment of this invention is connected.

Explanation of symbols

  100 DVD recorder, 102 sub-control unit, 104 tuner, 105 A / D converter, 106 compression processing unit, 107 expansion processing unit, 108 HDD control unit, 110 DVD drive device, 111 DVD, 112 D / A converter, 114 OSD image generation circuit, 115 input unit, 116 light receiving unit, 117 output I / F, 190 cable, 200 control unit, 4000 TV, 500 memory, 510 management list.

Claims (7)

A video / audio storage means for storing a video / audio file in a random accessible manner;
Management data storage means for storing a predetermined data size and data for managing the video / audio file, and the data size is data for determining a file size in the video / audio storage means ,further,
A file dividing unit for generating a plurality of block files in the video / audio storage unit by logically dividing the video / audio file for each data size based on an input of an instruction to edit the video / audio file;
In accordance with the generation of the plurality of block files, the management is performed by associating each address for specifying a location where each of the block files is stored with data for specifying each of the plurality of block files. Association means for storing in the data storage means ;
Based on an input of an instruction to select a playback block file to be played, and an input of an instruction to select a subsequent block file to be played following the selected block file, the address of the subsequent block file Editing means associated with the reproduction block file and stored in the management data storage means ;
In response to an input of an instruction to delete a block file, a deletion unit that deletes the address of the block file instructed to delete from the management data storage unit ;
In response to input of an instruction for reproducing the block file, the management and the management data storage means stored in the said reproduction start address of the designated reproducing start block files, associated with the reproduction start block file A data editing apparatus comprising: a reproducing unit that reproduces the reproduction start block file stored in the video / audio storage unit based on an address of another block file stored in the data storage unit . Video and audio storage means for storing video and audio files;
Management data storage means for storing a data size for determining a file size in the video / audio storage means, and data for managing the video / audio file;
File dividing means for generating a plurality of block files in the video / audio storage means by logically dividing the video / audio file for each data size based on an input of an editing instruction for editing the video / audio file; ,
In accordance with generation of the plurality of block files, the management is performed by associating position data for specifying the location where each of the block files is stored with data for specifying each of the plurality of block files. Association means for storing in the data storage means ;
The position data of the subsequent block file based on an input of an instruction to select a playback block file to be played and an input of an instruction to select a subsequent block file to be played back following the selected block file When the association and reproducing block files, and a editing means Ru is stored in the management data storage means, data editing device.   The data editing apparatus according to claim 2, wherein the video / audio storage unit can randomly access an area in which the video / audio file is stored. The data editing apparatus further includes a deletion unit that deletes the location data of the block file instructed to be deleted from the management data storage unit in response to an input of an instruction to delete the block file. Or the data editing apparatus according to 3. In response to an input of an instruction to reproduce the block file, the data editing device stores the position data of the reproduction start block file instructed to be reproduced and stored in the management data storage means, and the reproduction start block file A playback unit that plays back the playback start block file stored in the video / audio storage unit based on the position data of the other block file stored in the management data storage unit associated with The data editing apparatus according to claim 2 or 3. 6. The data editing apparatus according to claim 1, further comprising output means for outputting a screen for selecting a reproduction block file to be reproduced. A data editing method using a data editing device for editing a video / audio file,
The data editing device includes:
A control unit for controlling each unit of the data editing device;
A video / audio storage unit for storing video / audio files in a random accessible manner;
A management data storage unit that stores a predetermined data size and data for managing the video / audio file, and the data size is data that defines a file size in the video / audio storage unit. Yes,
The data editing method is:
The control unit generates a plurality of block files in the video / audio storage unit by logically dividing the video / audio file according to the data size based on an input of an instruction to edit the video / audio file. Steps,
Data for specifying each address for specifying the location where each block file is stored, and for specifying each of the plurality of block files, according to generation of the plurality of block files by the management data storage unit Associating and storing
The management data storage unit, based on an input of an instruction to select a playback block file to be played, and an input of an instruction to select a subsequent block file to be played after the selected block file, Associating and storing the address of the subsequent block file and the playback block file;
In response to the input of an instruction to delete the block file, the control unit deletes the address of the block file instructed to delete from the management data storage unit;
In response to an input of an instruction to play back the block file, the control unit associates the start address of the playback start block file instructed to be played stored in the management data storage means and the playback start block file. Playing back the playback start block file stored in the video / audio storage means based on the address of the other block file stored in the management data storage means being used. How to edit data.

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