JP4241801B2 - DVD recorder - Google Patents

Description

  The present invention relates to a DVD recorder that allows a user to control the recording state of a MAP file created in association with an index of an AVI file.

  In general, a DVD recorder has a time search function for reproducing content from the elapsed playback time when the elapsed playback time of the content is designated. For example, when content is recorded on a DVD medium as an AVI file, the DVD recorder performs a time search with reference to an index held by the AVI file. FIG. 4 shows a time search method with reference to an index. The AVI file 15 includes a header 16 that stores information necessary for reproducing content such as a codec method and a frame rate, content data 17 that stores video data and audio data of the content, and management of the content data 17. It consists of an index 18 in which information is stored. The index 18 holds content information corresponding to the elapsed playback time of content in the order of the elapsed playback time.

  Here, if the playback time of the entire content recorded on the DVD medium is 60 minutes, the index 18 holds content information corresponding to each playback elapsed time from 0 to 60 minutes. ing. At this time, if the user designates the elapsed playback time as 43 minutes and performs a time search, the DVD recorder starts the search with the index 18 from 0 minutes to 60 minutes. When the DVD recorder detects content information corresponding to the playback elapsed time of 43 minutes from the index 18, the DVD recorder starts playback from the point where the content playback elapsed time is 43 minutes based on the content information.

  As described above, the DVD recorder can perform a time search by referring to the index 18 of the AVI file 15. However, since the index 18 must be searched in order from the top, the user designates the elapsed playback time. There is a problem that it takes time until the content is reproduced. Therefore, in order to quickly execute the time search, a MAP file created in association with the index 18 is used to quickly detect content information corresponding to the elapsed playback time specified by the user from the index 18. ing. The conventional DVD recorder automatically writes the MAP file on the DVD medium regardless of the usage mode of the user.

However, it takes several minutes to write the MAP file to the DVD medium, and the storage capacity of the DVD medium is consumed. The time required to write the MAP file to the hard disk is several seconds. Therefore, there is a problem that there is no merit for writing a MAP file to a DVD medium for a user who does not use the time search function. Further, even for users who use the time search function, there is an increasing demand for reducing the time for writing the MAP file to the DVD medium or not consuming the storage capacity of the DVD medium. In the techniques disclosed in Patent Document 1 to Patent Document 3, a method of displaying a summary of content recorded on a DVD medium as an index at a high speed on a television or PC monitor, and various attributes and detailed information of the content are indexed. However, it does not describe the technology related to files and data used for time search.
No. 2004-028157 No. 2003-046912 JP 2004-171311 A

  The present invention has been made to solve the above-described problem of the conventional example, and records a MAP file which is not used on a storage medium by determining whether or not the user saves the MAP file. In addition, when storing the MAP file, the user can specify the storage medium for recording the MAP file, thereby controlling the capacity of the storage medium and the writing time of the MAP file. An object of the present invention is to provide a DVD recorder that can perform recording.

  In order to achieve the above object, the invention of claim 1 reads an index held by an AVI file from a hard disk on which content including video and audio is recorded and a DVD medium on which the content is recorded as an AVI file, MAP file creation means for creating a MAP file by selecting a predetermined playback elapsed time of content as a representative time and associating the representative time with the address of the index in which the representative time is recorded, and the specified playback elapsed time In a DVD recorder comprising: a playback means for playing back content; a command receiving section for receiving a command from a user; a recording means for recording a MAP file on a DVD medium and a hard disk; and a control section for controlling the entire apparatus. Storage unit that temporarily stores MAP files The control unit further includes inquiry means for inquiring the user whether to store the MAP file stored in the storage unit and whether the MAP file is recorded on the DVD medium or the hard disk. When the content recorded on the DVD medium is reproduced, it is detected whether the MAP file is recorded on the DVD medium or the hard disk. If the MAP file is not recorded on either the DVD medium or the hard disk, The inquiry means inquires whether or not to save the MAP file. When the instruction receiving unit receives an instruction to save the MAP file, the inquiry means further records the MAP file on either the DVD medium or the hard disk. The command reception unit asks if you want to When receiving an instruction to record on the media, the recording means records the MAP file on the DVD medium, and when the instruction receiving unit accepts an instruction to record the MAP file on the hard disk, the recording means records the MAP file on the hard disk. When the command receiving unit receives a command not to store the MAP file, the control unit is configured not to record the MAP file on either the DVD medium or the hard disk.

  According to a second aspect of the present invention, an index held by an AVI file is read from a DVD medium on which content composed of video and audio is recorded as an AVI file, and a predetermined elapsed playback time of the content is used as a representative time. MAP file creating means for selecting and creating a MAP file by associating the representative time and the address of the index where the representative time is recorded, a reproducing means for reproducing the content from the specified elapsed playback time, and a command from the user And a control unit for controlling the entire apparatus, further comprising a storage unit for temporarily storing the MAP file, the control unit further including a storage unit for temporarily storing the MAP file. Determines whether to save the MAP file stored in the storage unit. A query means for querying the user, and when the content is played back, the control unit detects whether or not the MAP file is recorded on the DVD medium, and if the MAP file is not recorded on the DVD medium, The combining unit inquires whether or not to save the MAP file, and when the command receiving unit receives a command to store the MAP file, the recording unit records the MAP file on the DVD medium, and the command receiving unit When an instruction not to save the file is received, the control unit prevents the MAP file from being recorded on the DVD medium.

  The invention of claim 3 further comprises a storage medium capable of storing the MAP file in the DVD recorder of claim 2, and the inquiry means records the MAP file on either the DVD medium or the storage medium. The recording unit further has a function of recording the MAP file on a storage medium, and the control unit reproduces the MAP file when the content recorded on the DVD medium is reproduced. Whether or not the MAP file is recorded is further detected, and if the MAP file is not recorded on any of the storage media, the inquiry means inquires whether or not to save the MAP file, and the command receiving unit In response to the instruction to save the MAP file, the inquiry means further stores the MAP file on either the DVD medium or the storage medium. When the command receiving unit receives a command to record the MAP file on the DVD medium, the recording unit records the MAP file on the DVD medium, and the command receiving unit records the MAP file on the storage medium. When the command is received, the recording unit records the MAP file on the storage medium, and when the command receiving unit receives a command that does not save the MAP file, the control unit does not record the MAP file on the storage medium. It is.

  According to the first aspect of the present invention, if the MAP file corresponding to the content recorded on the DVD medium is not recorded on either the DVD medium or the hard disk, the inquiry means stores the MAP file in the user. Inquire whether or not. As a result, the user can determine whether or not to save the MAP file. When the user decides to save the MAP file, the inquiry means inquires of the user whether to record the MAP file on the DVD medium or the hard disk. Thereby, the user can designate the recording destination of the MAP file. Since the MAP file is recorded on the DVD recorder, even when the DVD medium is time-searched by another DVD recorder, the other DVD recorder can use the MAP file. A search can be executed. On the other hand, since the MAP file is recorded on the hard disk, the DVD recorder can write the MAP file in a shorter time than when recording on the DVD medium without consuming the recording capacity of the DVD medium. .

  According to the second aspect of the present invention, if the MAP file corresponding to the content recorded on the DVD medium is not recorded on the DVD medium, the inquiry means asks the user whether to save the MAP file. I do. As a result, the user can determine whether or not to save the MAP file. By not recording MAP files that are not used by users who do not use the time search function on the DVD media, it is possible to avoid consuming the storage capacity of the DVD media.

  According to the invention of claim 3, the inquiry means inquires of the user whether the MAP file is recorded on the DVD medium or the storage medium. Thereby, the user can designate the recording destination of the MAP file. When the DVD recorder includes an SD card, a memory stick, a compact flash, or the like as a storage medium, the user can record a MAP file on any of these storage media. By recording the MAP file on these storage media, it is possible to write in a shorter time than when the MAP file is recorded on the DVD medium without consuming the recording capacity of the DVD medium. In addition, it is possible to carry the storage medium on which the MAP file is recorded together with the DVD medium.

  Hereinafter, a DVD recorder according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic configuration of a DVD recorder according to an embodiment of the present invention. The DVD recorder 1 controls the entire DVD recorder 1 and has a control unit 2 having inquiry means 9 for inquiring the user about various setting contents via the monitor 7 or the operation panel 8, and content including video and audio. Content recorded on the DVD medium 5 on the hard disk 3 to be recorded, the hard disk recording / reproducing apparatus 4 including the recording means 4A for recording various information on the hard disk 3, and the recording means 6A for recording various information on the DVD medium 5. A DVD recording / playback apparatus 6 including a playback means 6B for playing back from a specified elapsed playback time, and a command receiving unit 11 for inputting commands for performing various settings via the operation panel 8 or the remote controller 10. . When the content stored in the DVD medium 5 is the AVI file 15, the control unit 2 creates a MAP file 12 that creates a MAP file 12 to be used for time search from the index 18 (FIG. 2) held by the AVI file 15. A storage unit 14 including means 13 and connected to the control unit 2 temporarily stores the created MAP file 12.

  Next, a method in which the MAP creation unit 13 creates the MAP file 12 will be described. FIG. 2 shows the relationship between the index 18 and the MAP file 12. FIG. 2A shows the structure of the index 18, and FIG. 2B shows the structure of the MAP file 12. The index 18 holds content information corresponding to the elapsed playback time of content in the order of the elapsed playback time. Here, the playback time of the entire content recorded on the DVD medium is 60 minutes. The MAP creation means 13 selects the elapsed playback time as a representative time every 10 minutes from the elapsed playback time that the index 18 continuously holds. The MAP creation means 13 creates the MAP file 12 by associating the selected representative time with the address in the index 18 in which the content information corresponding to this representative time is stored. Since it is clear that the playback elapsed time starts at 0 minutes and the playback elapsed time ends at 60 minutes, the MAP file 12 does not hold the playback elapsed time of 0 minutes and 60 minutes as the representative time. .

  Next, a time search in which the user designates the elapsed reproduction time and reproduces the content will be described. When the user performs a time search by specifying the elapsed playback time from the operation panel 8 or the remote controller 10, the control unit 2 refers to the MAP file 12. Here, the elapsed playback time specified by the user is set as the specified time. If the designated time is 43 minutes, the control unit 2 selects a representative time that is smaller than the value of the designated time and is closest to the designated time from the MAP file 12. Here, of the representative times held by the MAP file, the representative time that is smaller than the designated time of 43 minutes and is closest to 43 minutes is 40 minutes. Therefore, the control unit 2 acquires the address “0xA0400” of the index 18 stored in association with the representative time 40 minutes.

  Next, the control unit 2 does not search the index 18 from the top, but accesses the address “0xA0400” in the index 18. Here, the address “0xA0400” in the index 18 is set as a point A, and the playback elapsed time held by the index 18 is set as a point B at 43 minutes. The control unit 2 starts the search with the playback elapsed time held by the index 18 from point A in the direction of 60 minutes. When the control unit 2 detects the point B, the control unit 2 specifies a playback point whose content playback elapsed time is 43 minutes based on the content information stored in the point B. The DVD recording / playback apparatus 6 starts playback of the content from the playback point specified by the control unit 2. As described above, by using the MAP file 12, the control unit 2 does not need to search the index 18 from the top, so that the DVD recording / reproducing apparatus 6 can quickly reproduce the content from the reproduction point. Become.

  The DVD recorder 1 has a function capable of controlling whether or not the user saves the MAP file 12 and in which storage medium the MAP file 12 is recorded. Here, a process in which the user controls the saving of the MAP file 12 will be described. FIG. 3 shows an operation flow of the storage control process of the MAP file 12 in the DVD recorder 1. It is assumed that the content is recorded on the DVD medium 5 as an AVI file. When the content recorded on the DVD medium 5 is reproduced in the DVD recorder 1, the control unit 2 detects whether or not the MAP file 12 exists on the DVD medium 5 (S101). When the MAP file 12 exists on the DVD medium 5 (Yes in S101), the control unit 2 reads the MAP file 12 from the DVD medium 5 in preparation for the time search (S102). Thereafter, the reproduction of the content is started (S106). If the MAP file 12 does not exist on the DVD medium 5 (No in S101), the control unit 2 detects whether the MAP file 12 associated with the content recorded on the DVD medium 5 exists on the hard disk 3 or not. (S103).

  If the MAP file 12 exists on the hard disk 3 (Yes in S103), the control unit 2 reads the MAP file 12 from the hard disk 3 in preparation for the time search (S102). Thereafter, the reproduction of the content is started (S106). If the MAP file 12 does not exist on the hard disk 3 (No in S103), the MAP creation means 13 creates the MAP file 12 from the index 18 held in the AVI file 15 recorded on the DVD medium 5 (S104). The control unit 2 temporarily stores the created MAP file 12 in the storage unit 14 (S105). Thereafter, the reproduction of the content is started (S106).

  Thereafter, when a time search is executed (Yes in S107), the control unit 2 selects a representative time that is smaller than the value of the specified time and is closest to the specified time from the MAP file 12, and sets the selected representative time to the selected representative time. The address of the index 18 stored in association is acquired (S108). The control unit 2 starts searching for the index 18 from the point corresponding to the acquired address in order to detect the designated time held by the index 18 (S109). The control unit 2 detects a designated time from the index 18 and specifies a content reproduction point based on the content information stored in the index 18 in association with the detected designated time. The DVD recording / reproducing apparatus 6 performs time search by reproducing the content from the reproduction point (S110). In step S107, when the time search is not executed (No in S107) or when the time search is executed (S110), the control unit 2 waits for the content reproduction to end (S111).

  In step S111, the processing from step S107 to step S111 is repeated until the reproduction of the content ends (No in S111). In step S111, when the reproduction of the content ends (Yes in S111), the control unit 2 detects whether the storage unit 14 stores the temporarily created MAP file 12 (S112). In step S112, if the storage unit 14 does not store the MAP file 12 (No in S112), the DVD recorder 1 ends the storage control process for the MAP file 12. In step S112, when the storage unit 14 stores the MAP file 12 (Yes in S112), the inquiry unit 9 saves the MAP file 12 to the user by displaying a message on the monitor 7 or the operation panel 8. An inquiry is made as to whether or not to perform (S113).

  When the command receiving unit 11 receives a command not to save the MAP file from the user via the operation panel 8 or the remote controller 10 (No in S113), the control unit 2 stores the MAP file temporarily stored in the storage unit 14 12 is deleted, and the DVD recorder 1 ends the storage control process of the MAP file 12. On the other hand, when the command receiving unit 11 receives a command to save the MAP file from the user (Yes in S113), the inquiry unit 9 displays a message on the monitor 7 or the operation panel 8 to thereby display the DVD media 5 to the user. An inquiry is made as to whether the MAP file 12 is to be recorded (S114). When the command receiving unit 11 receives a command to record the MAP file 12 on the DVD medium 5 from the user via the operation panel 8 or the remote controller 10 (Yes in S114), the DVD recording / reproducing device 6 stores the MAP file 12 on the DVD medium 5 5 (S115), the control unit 2 deletes the MAP file 12 temporarily stored in the storage unit 14. In step S114, when the command receiving unit 11 receives a command not to record the MAP file 12 on the DVD medium 5 or a command to record the MAP file 12 on the hard disk 3 (No in S114), the hard disk recording / playback device 4 The MAP file 12 is written to the hard disk 3 (S116), and the control unit 2 deletes the MAP file 12 temporarily stored in the storage unit 14. When the MAP file 12 is written to the DVD medium 5 or the hard disk 3, the DVD recorder 1 ends the storage control process for the MAP file 12.

  In this way, the user can determine whether or not to save the MAP file 12. For a user who does not use the time search function, it is not necessary to record the MAP file 12 on a storage medium such as the DVD medium 5 or the hard disk 3. It is possible to effectively use the storage capacity of the storage medium allocated to.

  Further, when the MAP file 12 is stored in a storage medium, the user can select a storage medium in which the MAP file 12 is stored according to the usage mode. By recording the MAP file 12 on the DVD medium 5, the user can use the MAP file 12 even when the DVD media 5 is executed by another DVD recorder 1, so that the MAP file 12 can be specified promptly. It becomes possible to reproduce the content from time. On the other hand, the user can avoid consuming the storage capacity of the DVD medium 5 having a smaller storage capacity than the hard disk 3 by recording the MAP file 12 on the hard disk 3. Furthermore, the MAP file 12 can be written to the hard disk 3 in a shorter time than when the MAP file 12 is recorded on the DVD medium 5.

  The present invention is not limited to the configuration of the above-described embodiment, and various modifications are possible. For example, the DVD recorder 1 uses an SD card, a memory in addition to the hard disk 3 as a storage medium on which the MAP file 12 is recorded. A stick or a compact flash may be provided. Further, the inquiry means 9 may not be configured to operate after the content reproduction is completed, but may be configured to operate at the start of content reproduction.

The block diagram which shows the outline of the DVD recorder which concerns on embodiment of this invention. (A) and (b) are the figures which show the relationship between the index which concerns on embodiment of this invention, and a MAP file. MAP file storage control process flow in the DVD recorder. The figure which shows the method of the time search which referred the index which concerns on the conventional embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 DVD recorder 2 Control part 3 Hard disk 4A Recording means 5 DVD media 6A Recording means 6B Playback means 9 Query means 11 Command reception part 12 MAP file 13 MAP creation means 14 Storage part 15 AVI file 18 Index

Claims (3)

A hard disk on which content consisting of video and audio is recorded;
An index held by the AVI file is read from a DVD medium in which the content is recorded as an AVI (Audio Video Interleaving) file, and a predetermined elapsed playback time of the content is selected as a representative time, and the representative time A MAP file creating means for creating a MAP file by associating the address of the index in which the representative time is recorded,
Playback means for playing back the content from a specified playback elapsed time;
A command receiving unit that receives commands from the user;
Recording means for recording the MAP file on the DVD medium and the hard disk;
In a DVD recorder comprising a control unit for controlling the entire apparatus,
A storage unit for temporarily storing the MAP file;
The control unit includes inquiry means for inquiring a user whether to store the MAP file stored in the storage unit and whether to record the MAP file on the DVD medium or the hard disk,
When the content recorded on the DVD medium is reproduced, the control unit detects whether the MAP file is recorded on the DVD medium or the hard disk, and the MAP file includes the DVD medium and If not recorded on any of the hard disks, the inquiry means inquires whether or not to save the MAP file,
When the instruction receiving unit receives an instruction to save the MAP file, the inquiry means further inquires whether the MAP file is recorded on the DVD medium or the hard disk,
When the command receiving unit receives a command to record the MAP file on the DVD medium, the recording unit records the MAP file on the DVD medium,
When the command receiving unit receives a command to record the MAP file on the hard disk, the recording unit records the MAP file on the hard disk,
The DVD recorder, wherein when the command receiving unit receives a command not to store the MAP file, the control unit does not record the MAP file on either the DVD medium or the hard disk. An index held in the AVI file is read from a DVD medium on which content including video and audio is recorded as an AVI file, and a predetermined elapsed playback time of the content is selected as a representative time. A MAP file creation means for creating a MAP file by associating with the address of the index in which the representative time is recorded;
Playback means for playing back the content from the specified playback elapsed time;
A command receiving unit that receives commands from the user;
Recording means for recording the MAP file on the DVD medium;
In a DVD recorder comprising a control unit for controlling the entire apparatus,
A storage unit for temporarily storing the MAP file;
The control unit includes inquiry means for inquiring a user whether or not to save the MAP file stored in the storage unit,
When the content is reproduced, the control unit detects whether or not the MAP file is recorded on the DVD medium. If the MAP file is not recorded on the DVD medium, the inquiry means , Query whether to save the MAP file,
When the command receiving unit receives a command to save the MAP file, the recording unit records the MAP file on the DVD medium,
The DVD recorder, wherein when the command receiving unit receives a command not to store the MAP file, the control unit does not record the MAP file on the DVD medium. A storage medium capable of storing the MAP file;
The inquiry means further has a function of inquiring a user whether to record the MAP file on the DVD medium or the storage medium,
The recording means further has a function of recording the MAP file in the storage medium,
When the content recorded on the DVD medium is reproduced, the control unit further detects whether or not the MAP file is recorded on the storage medium, and the MAP file is stored in any of the storage media. Is not recorded, the inquiry means inquires whether to save the MAP file,
When the instruction receiving unit receives an instruction to save the MAP file, the inquiry means further inquires whether the MAP file is recorded on the DVD medium or the storage medium,
When the command receiving unit receives a command to record the MAP file on the DVD medium, the recording unit records the MAP file on the DVD medium,
When the command receiving unit receives a command to record the MAP file on the storage medium, the recording unit records the MAP file on the storage medium,
3. The DVD recorder according to claim 2, wherein when the command receiving unit receives a command not to save the MAP file, the control unit does not record the MAP file on the storage medium.

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