JP2011138574A - Information recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the time to wait for chapter playback while minimizing a capacity cost, in an information recording and reproducing device formed by combining a plurality of recording media. <P>SOLUTION: An information recording and reproducing device includes a composite recording medium formed by combining a high-speed recording medium having high transfer speed and a low-speed recording medium having low transfer speed. When one content is recorded in the composite recording medium, and when chapter information is added to the content, a region with a predetermined length from a position where the chapter is added is stored in the high-speed recording medium. When another new chapter is added, the region with the predetermined length is moved from the low-speed recording medium to the high-speed recording medium. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an information recording / reproducing apparatus, and more particularly to an information recording / reproducing apparatus for recording / reproducing information on / from a plurality of recording media.

  Server storage that appropriately reads and writes a large amount of data in response to access requests from a large number of clients has a problem of reducing operational costs as well as reliability. In particular, a storage system in a data center using a high-speed HDD consumes a large amount of power, and there are significant problems from the viewpoint of ecology of the global environment. As a means effective for these problems, there is a technique called ILM (Information Lifecycle Management). The ILM is a storage system that combines a plurality of recording media having different characteristics, and is a technique aimed at reducing operational costs by selecting a storage medium as a storage destination according to the user's data access frequency. As recording media to be combined, it is common to combine a high access speed but costly recording medium with a low access speed but low cost. For example, the former may be a RAID system in which the access speed is improved by processing a plurality of HDDs in parallel. As the latter, a recordable optical disk or magnetic tape such as a CD or DVD can be considered. In ILM, data with low access frequency is stored in a recording medium with low access speed, and data with high access frequency is stored in a recording medium with high access speed, thereby maintaining the data transfer efficiency of the system. The effect that can lower the overall cost is expected.

A problem of the ILM is that a waiting time is generated when accessing data stored in a recording medium having a low access speed. To solve this problem, a method has been proposed in which the data of the head part or the data of the chapter part of a certain content is stored in a recording medium with a high access speed, and the remaining part is stored in a recording medium with a low access speed. Yes. (Patent Document 1, Patent Document 2, Patent Document 3)
As a result, when there is a content playback request, first the head portion is quickly read out from the high-speed medium to reduce the waiting time of the user, and the low-speed media is accessed in advance while the head portion is being played back. Thus, it is possible to continuously reproduce from the head part.

JP2007-193864 Special table 2007-525753 JP2007-012132

  However, these methods have a problem that the expected effect cannot be obtained when editing such as addition or deletion of chapters is performed.

  The present invention includes a composite recording medium in which a high-speed recording medium having a high transfer speed and a low-speed recording medium having a low transfer speed are combined. When one content is recorded on the composite recording medium, chapter information is added to the content. Is an information recording / reproducing apparatus that stores an area of a certain length from the position where the chapter is given to the high-speed recording medium, and when a new chapter is further added, from the low-speed recording medium A region having a certain length is moved to the high-speed recording medium.

  In addition, according to the present invention, if the new chapter is close to the existing chapter, a certain length region is the high-speed region as a continuous region with respect to a certain length region from the position where the existing chapter is given. It is moved to a recording medium.

  In the present invention, when an existing chapter is deleted, an area having a certain length is moved from the high-speed recording medium to the low-speed recording medium.

  Further, the present invention provides the high-speed recording medium such that if the existing chapter is close to another existing chapter, an area having a certain length from the position where the other existing chapter is given remains in the high-speed recording medium. A region having a certain length is moved from the low-speed recording medium to the low-speed recording medium.

  The present invention is also characterized in that a part of the content stored in the high speed recording medium and a part of the content stored in the low speed recording medium constitute one file.

  In the present invention, a part of the content stored in the high-speed recording medium constitutes a file A, a part of the content stored in the low-speed recording medium constitutes a file B, and the file A and the file B Are different files and have a playlist file that defines the playback order of file A and file B.

  According to the present invention, it is possible to appropriately reproduce content and improve user convenience.

It is the figure which showed the structure of the information recording / reproducing apparatus, and the connection with an external apparatus. It is a figure showing an example of distribution to a plurality of recording media. It is a processing flow at the time of recording. It is the figure which showed the file management information of the content data of a recording destination. FIG. 1 is a first diagram illustrating allocation of content data of a recording destination on a recording medium. It is a content data block diagram. It is the figure which showed the file management information of the content data of a recording destination. FIG. 2 is a second diagram illustrating the allocation of content data at a recording destination on a recording medium. FIG. 3 is a third diagram illustrating allocation of content data at a recording destination on a recording medium. It is a figure explaining composition and offset of management data and a chapter list. It is the processing flow 2 at the time of recording. FIG. 2 is a second diagram illustrating an example of distribution to a plurality of recording media. FIG. 3 is a third diagram illustrating an example of distribution to a plurality of recording media. FIG. 4 is a fourth diagram illustrating an example of distribution to a plurality of recording media. FIG. 5 is a fifth diagram illustrating an example of distribution to a plurality of recording media.

  Hereinafter, embodiments of the information recording / reproducing apparatus of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing the configuration of the information recording / reproducing apparatus according to the first embodiment of the present invention and the connection with external devices.

  Reference numeral 100 denotes an information recording / reproducing apparatus incorporating two recording media.

  Reference numeral 101 denotes an I / F that performs data input / output with the external device 999. For example, USB (Universal Serial Bus) or SATA (Serial ATA) can be used. Alternatively, a network I / F connected to a LAN (Local Area Network) may be used.

  A memory 102 temporarily stores content to be recorded on the HDD 104 and content to be recorded on the recording medium 106 by the drive 105. For example, an SD-RAM can be used. In addition, a part of the HDD 104 built in the recording apparatus can be used.

  A high-speed recording medium 104 records content. For example, an HDD (Hard Disc Drive) in which a magnetic material is applied to a metal disk can be used. In addition, an iVDR additionally provided with a copyright protection circuit in the HDD, a plurality of HDDs connected in parallel, RAID (Redundant Arrays of Inexpensive Disks) for recording and reproducing data, and a FLASH memory are used as recording media. An SSD (Solid State Drive) having SATA or the like in F can be used.

  Reference numeral 105 denotes a drive that records and reproduces content on the low-speed recording medium 106. For example, an optical disk drive (ODD, Optical Disc Drive) can be used. As the type of the optical disc, for example, a BD drive capable of recording / reproducing on a BD-RE can be used.

  Reference numeral 106 denotes a low-speed recording medium for recording content. For example, an optical disc such as a rewritable BD-RE among Blu-ray Discs can be used.

  101 controls processing to input / output content via the I / F 103, controls to record the input content on the HDD 104 via the memory 102, and controls the drive 105 to record on the optical disk 106, CPU. The CPU executes recording data distribution processing to the HDD 104 and the ODD 105. A configuration in which the CPU incorporates the memory 102 is also conceivable. In addition, an SoC (System on Chip) in which other parts are integrated is also conceivable.

  Reference numeral 999 denotes an external device that inputs / outputs content data and accompanying data to / from the information recording / reproducing apparatus 100. It may be a cloud service via the Internet. The content may be digital broadcast data received by a digital tuner, content recorded on a recording medium such as a BD-ROM or an SD card, and video / audio data shot by a digital video camera or digital still camera. As accompanying data, data broadcasting and EPG information sent as part of digital broadcasting, digest information obtained by analyzing the content (for example, distribution data of goal scenes during soccer game relay), recorded on a recording medium In addition, playlist information and chapter information, face recognition information and EPG information acquired when shooting with a camera, camera information (for example, aperture value, shutter speed), and the like are conceivable.

  FIG. 2 is a diagram showing an example of distribution to a plurality of recording media according to the first embodiment of the present invention.

  Reference numeral 201 denotes content, where the left end indicates the beginning of the content and the right end indicates the end of the content.

  211 is a chapter attached to the top of the content.

  212 is a chapter attached in the middle of the content.

  Reference numeral 213 denotes a chapter that is attached after the chapter 212 and is located at a newer position than the chapter 212 on the time axis.

  Here, consider a case where the three chapters 211, 212, and 213 are at positions sufficiently separated from each other.

  Reference numeral 231 denotes a range of a certain length starting from the position of the chapter 211.

  Reference numeral 232 denotes a range of a certain length starting from the position of the chapter 212.

  Reference numeral 232 denotes a range of a certain length starting from the position of the chapter 213.

  Here, the ranges 231, 232 and 233 have the same length.

  This length is determined by the access performance (for example, spin-up time and seek time) of the ODD 105, the data transfer speed of the optical disk 106, and the like. The lower the speed at which the ODD 105 reads data from the optical disk 106, the longer the lengths of the ranges 231, 232, and 233 need to be.

  However, in general, the HDD 104 has a higher bit unit price and a higher cost than the optical disk 106. Therefore, if it is unnecessarily long, there is a problem of raising the cost of the entire system. The cost can be minimized by determining the minimum required length according to the performance of the system.

  The seek time differs depending on which position on the optical disk 106 is read from, but if the seek time in the case of a full stroke, which is the worst value, is taken into consideration, all cases can be handled.

  On the other hand, the data transfer speed of the optical disc 106 is generally guaranteed to be a transfer speed of a value determined by a standard, such as 2 × speed, 4 × speed, 8 × speed, and the like. Therefore, depending on the transfer speed for each disc, for example, if the optical disc is 4 × speed, the length of the range 231, 232, 233 is set so that a quarter length of the 1 × optical disc is sufficient. Can be determined.

If the lengths of the ranges 231, 232, and 233 are sufficiently long, the content of the portion recorded on the optical disk 106 that is a low-speed medium can be seamlessly reproduced.
The lengths of the ranges 231, 232, and 233 may be defined as the same data size (for example, byte units), but the time is the same when considering a stream encoded at a variable bit rate. It is better to define it. For example, in the case of a scene encoded at a high bit rate, it is necessary to allocate a larger range of data amount even at the same time.

  As described above, when three chapters 211, 212, and 213 are added to one content 201, the process of allocating which part of the content 201 is recorded on the HDD 104 and which part is recorded on the optical disk 106 is performed. This will be described below.

  Reference numeral 221 denotes an extent corresponding to the range 231 from the first chapter 211 of the content 201.

  223 is an extent corresponding to the range 232 from the chapter 212 in the middle of the content 201.

  225 is an extent corresponding to the range 233 from the chapter 213 in the middle of the content 201.

  An extent 222 corresponds to an extent between the extent 221 and the extent 223.

  An extent 224 corresponds to an extent between the extent 223 and the extent 225.

  Reference numeral 226 denotes an extent corresponding to the interval from the end of the extent 225 to the end of the content 201.

  In this way, the content 201 is divided into six extents, of which the extents 221, 223, and 225 are recorded on the HDD 104, and the extents 222, 224, and 226 are recorded on the optical disc 106 by the ODD 105.

  By allocating and recording in this way, when the user reproduces the content 201, it is possible to arrange the data at the chapter position where there is a high possibility that a waiting time until the image is displayed on the high-speed medium. There is an effect that can be reduced.

  In addition, considering the data transfer performance of the ODD 105 and the optical disk 106, which are low-speed media, only the minimum necessary data is stored in the HDD 104, whereby the amount of data consumed by the HDD 105 can be reduced, and an expensive (high cost) HDD. The ratio of use can be reduced, and the overall cost can be reduced.

  FIG. 3 is a diagram showing a flow of recording processing according to the first embodiment of the present invention.

First, as shown in the description with reference to FIG. 2, a list of recording data for each recording medium (a list for each recording medium) indicating which part of data is to be recorded on which recording medium is recorded for the entire content to be recorded. Create. (S300)
The recording medium-specific list is a list in which the number of extents to be recorded are arranged as a pair of records of the head positions and lengths of the extents to be recorded, and indicates the recording destination recording medium for each record. The start position of the extent to be recorded is indicated by an offset (time offset or byte offset) from the start of the content, and the length of the extent to be recorded is indicated in units of time or bytes.

  The effect of indicating the extent start position and length in time units is the advantage that conversion processing that takes into account the bit rate when creating a list is unnecessary, and the effect of indicating in byte units is the effect on the recording medium. This is an advantage that the processing for converting the seek amount and the read / write amount at the time of recording becomes unnecessary.

  Hereinafter, recording processing is performed based on the list created in S300.

Before recording, it is confirmed whether there is a sufficient remaining amount of the recording medium with respect to the data amount of the record to be recorded. (S301)
First, the remaining amount of the optical disk 106 is confirmed. (S311)
If there is a sufficient remaining amount with respect to the total data amount of the remaining records to be recorded on the optical disc 106, the remaining amount of the HDD 104 is confirmed. (S312)
Otherwise, error handling is performed. (S313)
If there is a sufficient remaining amount with respect to the total data amount of the remaining records to be recorded in the HDD 104, the remaining amount confirmation is terminated and the process proceeds to the next step.

Otherwise, error handling is performed. (S313)
When the remaining amount of the recording medium is sufficient, the recording medium is selected according to the list, and only one record is recorded. (S302)
With reference to the list, it is confirmed whether or not the recording destination of the record to be recorded is the HDD 104. (S321)
If the recording destination is not the HDD 104, the data is recorded on the optical disk 106 by the ODD 105. (S322)
If the recording destination is the HDD 104, it is recorded in the HDD 104. (S323)
When the extent recording is completed, the management information is updated. (S303)
As management information, extent allocation information (start address and length) of the content data file at the recording destination, file length, and the like are conceivable.
When the management information update is completed, refer to the list and check whether there are any unrecorded records. (S304)
If it remains, the recording process is performed from S301.

If it does not remain, the recording process is terminated. In this way, a desired allocation can be performed by sequentially recording all records according to the list.

  FIG. 4 is a diagram showing file management information of the recording destination content data according to the first embodiment of the present invention.

  401 is a parent directory.

  Reference numeral 402 denotes a child directory for storing the recorded content.

  Reference numeral 403 denotes a management data file accompanying the recorded content.

  Reference numeral 404 denotes a chapter data file attached to the recorded content.

  Reference numeral 405 denotes a recorded content file.

  Reference numerals 406 to 417 denote allocation information of extents constituting the recorded content file 405. Similarly to the description in FIG. 2, the top, chapter 1, chapter 2, and content with chapters at the end of the CM are shown.

  The content file 405 is a file having a configuration in which extents are recorded alternately on two recording media.

  FIG. 5 is a diagram showing the allocation of the recording destination content data on the recording medium according to the first embodiment of the present invention.

410, 412, 414, and 416 are extents recorded in the HDD 104.
Reference numerals 411, 413, 415, and 417 denote extents recorded on the optical disk 106.

  Reference numerals 501, 502, 503, and 504 are the top logical addresses of extents 410, 412, 414, and 416, respectively.

  Reference numerals 511, 512, 513, and 514 denote the top logical addresses of the extents 411, 413, 415, and 417, respectively.

  For example, when the user gives an instruction to reproduce from the beginning of the content, seek to the logical address 501 on the HDD 104 and reproduction of the leading data 410 is started. The head data 410 is temporarily stored in the memory 102.

  When the reproduction of the top data 410 is started, the seek is next performed to the logical address 511 on the optical disk 106 and the reproduction of the intermediate data 1 411 is started. The intermediate data 1 411 is temporarily stored in the memory 102 after the head data 410 stored on the memory 102.

  Thereafter, playback is performed in the order of 412, 413, 414, 415, 416, and 417.

  On the other hand, when the user gives an instruction to reproduce from chapter 1 in the middle of the content, seek to logical address 502 on HDD 104 and reproduction of chapter 1 412 is started.

When the reproduction of chapter 1 412 is started, the seek is next made to the logical address 512 on the optical disk 106, and the reproduction of the intermediate data 2 413 is started.
Thereafter, playback is performed in the order of 414, 415, 416, and 417.
Similarly, when the user gives an instruction to start playback from the chapter 2 or when the user jumps to the position at the end of the CM and starts playback, the playback is similarly performed from the data on the HDD 104.

  Therefore, in any case, the reproduction is started from the high-speed medium at first, so that there is an effect that the waiting time of the user until the reproduction is started can be reduced.

FIG. 6 is a diagram showing the content data structure of the second embodiment of the present invention.
FIG. 7 is a diagram showing file management information of the recording destination content data according to the second embodiment of the present invention.

  FIG. 8 is a diagram showing the allocation of the recording destination content data on the recording medium according to the second embodiment of the present invention.

  Note that the description of the common parts with the first embodiment of the present invention is omitted. For example, the configuration, allocation, and recording process flow shown in FIGS. 1, 2, and 3 are common and will be omitted.

  The second embodiment of the present invention has many points in common with the first embodiment, but the difference is that the content data of the recording destination is composed of a plurality of files, and these content files are managed by a playlist file. It is a point.

  The difference between FIG. 4 and FIG. 7 is that a playlist file 601 is added and that the content data file 405 is composed of eight content files 610 to 617.

  The data of the content files 610 to 617 is the same as the data of the extents 410 to 417, respectively.

Also, as shown in FIG. 8, the allocation of the content files 610 to 617 is the same as that of the extents 410 to 417.
As shown in FIG. 6, the playback order of the eight content files 610 to 617 is defined by the playlist file 601. That is, in the order of the file names described in the playlist file 601, 00000. m2ts (first data), 00001. m2ts (intermediate data 1), 00002. m2ts (chapter 1), 00003. m2ts (intermediate data 2), 00004. m2ts (chapter 2), 00005. m2ts (intermediate data 3), 00006. m2ts (CM dawn 1), 00007. It is reproduced as m2ts (intermediate data 4).

  In addition, a seamless reproduction flag is assigned to the playlist file 601 for each file name of content data to be reproduced. If the value of this flag is 1, it indicates that it is possible to seamlessly play back with the next content file. A value of 0 for this flag indicates that seamless playback is not guaranteed. As shown in FIG. 6, in the case of the present invention, since the content data that was originally seamless was divided, the seamless reproduction flag is set to 1. However, the seamless reproduction flag of the last file in the reproduction order (intermediate data 4) is 0 because there is no content file to be reproduced next.

  As described above, even in the configuration of the second embodiment of the present invention, the same effect as that of the second embodiment can be obtained.

  Also, by providing a seamless playback flag, it is possible to clearly distinguish whether the file is originally non-continuous or originally continuous, and a compressed stream file (eg, MPEG, H.264, etc.) included in the content This is advantageous in that it is possible to determine whether or not the decoder should be reset when decoding processing is performed after reading out.

  FIG. 9 is a diagram showing the allocation of the recording destination content data on the recording medium according to the third embodiment of the present invention.

  FIG. 10 is a diagram for explaining the configuration and offset of the management data and chapter list of the third embodiment of the present invention.

  The description of the common parts with the first and second embodiments of the present invention is omitted. For example, since the configuration and allocation shown in FIGS. 1 and 2 are common, they are omitted. The content data configuration or the content data file management information shown in FIG. 6 or FIG. 7 is common and will be omitted.

  The third embodiment of the present invention is an embodiment aimed at the effect of shortening the reproduction waiting time from the reproduction resume point.

As shown in FIG. 9, when the last extent 417 of the content is being played back, when the playback is finished and the last played position is held as the resume point, the data read first in the next playback is the resume point. Data starting from, that is, data on the optical disk 106. In this case, since the access speed of the optical disk 106 is lower than that of the HDD 104, the waiting time until the start of image output is increased. In order to solve this problem, content data starting from the resume point is transferred to the HDD 104 which is a high-speed device. In other words, when the resume point is set at the end of playback, the position is handled in the same way as a chapter. If the resume point is on a low-speed medium, an area of a certain length after the resume point is transferred to the HDD 104 which is a high-speed device. Move up. At this time, the portion including the end of the extent 417 is deleted from the extent 417, and the remaining portion is left as a shorter extent 417 ′. At the same time, the deleted part is moved and recorded on the HDD 104 as an extent 108.
When the extent change is completed, the management information is updated. The management information is changed such that the allocation information of the content file is changed, the length of the extent 417 is shortened, and the extent 418 is added at the end. The overall length of the content file is not changed.

  In FIG. 9, the case where the resume point is set on the optical disk 106 which is a low-speed medium has been described. However, as another example, a case where a resume point is set on the HDD 104 which is a high-speed medium is conceivable. In addition, the resume point is handled in the same way as a chapter, and a part of the data of the extent is moved from the optical disc 106 so that a certain length range from the resume point exists on the HDD 104. Management information is updated as the data moves. That is, the length of the extent including the added resume point is lengthened by the amount of data moved from the optical disc 106, and the length of the extent on the optical disc 106 that has been shortened by the movement of the data is shortened by the amount of moved data. Then, move the start position backward by the amount of the moved data.

  In FIG. 10, 1001 is the total content playback time, and 1002 is H.264, for example. H.264 and MPEG-TS, content video format, 1003 is the content audio format such as LPCM and Dolby Digital, 1004 is the average bit rate of the content, 1005 is the resume point indicating the content resuming position, and 1006 is the content A feature point list storing characteristic positions, 1011 is first data of the feature point list, and 1012 is second data of the feature point list.

  1021 is the first data indicating the position of the chapter, and 1022 is the second data indicating the position of the chapter.

  Reference numeral 1031 is a schematic diagram in which the horizontal axis indicates the playback position from the beginning of the content. Reference numeral 1041 denotes the position of the first chapter 1, 1042 denotes the position of the first feature point 1, 1043 denotes the position of the second chapter 2, and 1044 denotes the position of the second feature point 2.

  Reference numeral 1051 denotes an offset value from the beginning of the content of feature point 1, 1052 denotes an offset value from the beginning of the content of chapter 2, and 1053 denotes an offset value from the beginning of the content of feature point 2.

  At this time, the offset value 1051 is stored in the offset 1 of the feature point 1 1011, and the offset value 1053 is stored in the offset 2 of the feature point 2 1012. Further, 0 is stored in the offset 1 of the chapter 1 1021, and the offset value 1052 is stored in the offset 2 of the chapter 2 1022.

  Here, the offset values 1051, 1052, and 1052 may be values representing the reproduction time from the beginning of the content in seconds, a reference clock counter value, or the number of bytes from the beginning of the content.

  A feature point can be defined as a feature at various angles. For example, when a face is determined to be photographed by face recognition technology, the feature point can be used. Also, in sports broadcasts such as soccer, a feature point can be a place where the cheering of the audience is rising like a goal scene. Alternatively, the end of CM can be used as a feature point. Furthermore, a feature point can be added according to an input from the user, for example, by pressing a button on the remote controller during playback.

  A recording process in the case where feature points are generated and added in real time during content recording will be described in the fourth embodiment.

  Note that the description of the common parts with the first embodiment of the present invention is omitted. For example, since the configuration and allocation shown in FIGS. 1 and 2 are common, they are omitted.

FIG. 11 is a diagram showing a flow of recording processing according to the fourth embodiment of the present invention.
When the recording is started, it is confirmed whether there is a sufficient remaining amount of the recording medium with respect to the data amount of the record to be recorded. (S301)
After checking the remaining amount, it is selected whether to record in the ODD 104 or the HDD 105. (S1102)
After selecting and recording a recording medium, the management information is updated. (S303)
After the management information is updated, it is confirmed whether or not there is a recording request. If not, exit. (S1104)
In the recording medium selection step S1102, it is first determined whether or not the record to be recorded includes a feature point. (S1121)
If it is determined that the feature point is not included, recording is performed on the ODD 105, which is a low-speed medium (S322), and the recording medium selection step is ended.

  If it is determined that the feature point is included, recording is performed on the HDD 104, which is a high-speed medium (S323), and the recording medium selection step is terminated.

  With the above processing, recording can be performed while registering feature points in units of records.

  For example, the stream analysis is performed by the recorder during broadcast recording of sports broadcasts, and the excitement of the audience cheer is detected from the volume, or the goal scene is detected by recognizing characters from the OSD display or animation display indicating the goal count. By doing so, it can be applied to a so-called digest function that extracts only a lively scene in a long-time sports broadcast.

  When the recorded sports broadcast is played back using the digest function so that it can be viewed in a short time, it is sequentially played back according to the feature point list 1006. Since all the feature points are recorded on the HDD 104 by the above recording process, the waiting time during jumping to the feature points is shortened, and an effect that high-speed viewing is possible is obtained.

  Next, as Example 5 of the present invention, a case where chapters are added or deleted by editing processing after content recording will be described.

  FIG. 12 is a diagram showing an example of distribution to a plurality of recording media after adding a chapter.

  When chapters are added, a range of a certain length starting from the position of the chapter is allocated so as to overlap with the entire head 221, chapter 1 head 223, and chapter 2 head 225 in FIG. 2. In such a case, as shown in FIG. 12, a range 1234 having a certain length starting from the position of the added chapter 1214 overlaps the range 233, and the range combining the range 1234 and the range 233. This can be realized by moving data from the optical disc 106 to the HDD 104 so that the chapter head 225 ′ corresponding to 1235 is recorded on the HDD 104.

  Conversely, when the chapter 1214 in FIG. 12 is deleted, the state may be changed from the state of FIG. 12 to the state of FIG. In this case, it can be realized by moving only the difference between the range 1235 and the range 233 to the optical disc 106 so that the range 233 remains in the HDD 104.

  FIG. 13 is a diagram showing an example of distribution to a plurality of recording media after chapter deletion.

For example, when the chapter 212 in FIG. 2 is deleted, the area of the chapter 1 head 223 may be moved from the HDD 104 to the optical disk 106.
The chapter 1 head 223 exists on the optical disc 106 as intermediate data 4 223 ′ after movement.

  FIG. 14 is a diagram showing an example of distribution to a plurality of recording media at the time of chapter movement accompanying the deletion of the area including the content head.

  When the head portion in FIG. 2 is deleted, the head position that was at the position 211 before the deletion may be moved to 211 ', and the range 231 may be moved to the range 231' accordingly. At this time, it can be realized by moving an area 1402 equal to the data amount corresponding to the difference between the head position 211 before deletion and the head position 211 ′ after deletion from the optical disk 106 to the HDD 1401.

  FIG. 15 is a diagram showing an example of distribution to a plurality of recording media after adding chapters.

  When chapters are added, a range of a certain length starting from the chapter position is allocated so as not to overlap with the entire head 221, chapter 1 head 223, or chapter 2 head 225 region in FIG. 2. In such a case, as shown in FIG. 15, the chapter 3 head 1521 corresponding to a certain length range 1531 starting from the position of the added chapter 1551 is moved from the optical disk 106 to the HDD 104. ,realizable.

  Note that, as described above, addition or deletion of feature points or chapters does not change the content playback order, but only changes the physical allocation of the content. As described above, a file system and a playlist can be used as a mechanism for preventing changes in physical allocation from affecting the playback order of contents.

  The preferred embodiments of the present invention have been described above.

  If this information recording / reproducing apparatus is used, it is possible to achieve both the ease of handling one content as one file and the reduction in waiting time until the content is displayed. Further, if this information recording / reproducing apparatus is used, it is possible to achieve both the editing of a variety of reproducing methods using a playlist that is widely spread and familiar to the user, and the waiting time until the content is displayed.

  According to the present invention, an information recording / reproducing apparatus combining a plurality of recording media can start reproduction quickly without generating a waiting time in response to a user's reproduction request.

  According to the present invention, when a user specifies a chapter and reproduces the content, there is an effect that the waiting time until the content is displayed can be reduced. In addition, considering the data transfer performance of ODD and optical disc, which are low-speed media, storing only the necessary minimum data in the HDD can reduce the amount of data consumed by the HDD, and the cost of an expensive (high cost) HDD The usage ratio can be lowered, and the overall cost can be reduced.

  Furthermore, the same effect can be obtained whether the content is handled as a single file or managed by a playlist.

100 Information recording / reproducing apparatus 101 CPU
102 Memory 103 I / F
104 HDD
105 ODD
106 Optical disk 999 External device

Claims (17)

An information recording / reproducing apparatus for recording or reproducing information on a recording medium,
A composite recording medium that combines a high-speed recording medium with a high transfer speed and a low-speed recording medium with a low transfer speed,
When recording video / audio content on the composite recording medium, a part of the video / audio content is stored in the high-speed recording medium, and the other part is stored in the low-speed recording medium. apparatus. The information recording / reproducing apparatus according to claim 1,
When chapter information is assigned to the video / audio content, an information recording / reproducing apparatus storing an area having a certain length from the position where the chapter is assigned to the high-speed recording medium. The information recording / reproducing apparatus according to claim 1,
When recording the feature point of the video / audio content together with the video / audio content, an area having a certain length from the feature point is stored in the high-speed recording medium. The information recording / reproducing apparatus according to claim 3,
The information recording / reproducing apparatus, wherein the feature point is a face detection position in the video / audio content. The information recording / reproducing apparatus according to claim 3,
The information recording / reproducing apparatus, wherein the feature point is a digest reproduction position in the video / audio content. The information recording / reproducing apparatus according to claim 3,
The information recording / reproducing apparatus, wherein the feature point is a reproduction resume position of the video / audio content. The information recording / reproducing apparatus according to claim 3,
The information recording / reproducing apparatus, wherein the feature point is a CM end position in the video / audio content. The information recording / reproducing apparatus according to claim 2,
An information recording / reproducing apparatus, wherein a certain length from a position where the chapter is assigned is equal to or longer than a length corresponding to an access waiting time of the low-speed recording medium. An information recording / reproducing apparatus according to any one of claims 3 to 5,
An information recording / reproducing apparatus characterized in that a certain length from the feature point is equal to or longer than a length corresponding to an access waiting time of the low-speed recording medium. An information recording / reproducing apparatus according to any one of claims 8 to 9,
The information recording / reproducing apparatus, wherein the access waiting time of the low-speed recording medium is a sum of a spin-up time and a full stroke seek time of the low-speed recording medium. The information recording / reproducing apparatus according to any one of claims 1 to 10,
An information recording / reproducing apparatus, wherein a part of the video / audio content stored in the high-speed recording medium and a part of the video / audio content stored in the low-speed recording medium constitute one file. The information recording / reproducing apparatus according to any one of claims 1 to 10,
A part of the video / audio content stored in the high-speed recording medium constitutes a file A, a part of the video / audio content stored in the low-speed recording medium constitutes a file B, and the file A and the file B are An information recording / reproducing apparatus having a playlist file which is a different file and defines a reproduction order of file A and file B. An information recording / reproducing apparatus according to any one of claims 2 and 8,
An information recording / reproducing apparatus, wherein when the chapter is deleted, an area having a certain length is moved from the high-speed recording medium to the low-speed recording medium from a position where the chapter is added. An information recording / reproducing apparatus for recording information on a recording medium or reproducing the information from the recording medium,
A high-speed recording medium with a high transfer speed and a low-speed recording medium with a low transfer speed,
When recording video / audio content on the recording medium, a part of the video / audio content is stored in the high-speed recording medium, and the other part is stored in the low-speed recording medium,
When a new chapter is added to the video / audio content, an area included in the low-speed recording medium is moved to the high-speed recording medium out of an area having a certain length from the position where the new chapter is added. A characteristic information recording / reproducing apparatus. An information recording / reproducing apparatus for recording information on a recording medium or reproducing the information from the recording medium,
A high-speed recording medium with a high transfer speed and a low-speed recording medium with a low transfer speed,
When recording video / audio content on the recording medium, a part of the video / audio content is stored in the high-speed recording medium, and the other part is stored in the low-speed recording medium,
An information recording / reproducing apparatus, wherein when an existing chapter is deleted, an area having a certain length is moved to the low-speed recording medium from a position where the existing chapter is assigned. The information recording / reproducing apparatus according to claim 15,
When an existing chapter is deleted, if another existing chapter is included in an area of a certain length from the position where the existing chapter is assigned, the other chapter is added from the position where the existing chapter is assigned. An information recording / reproducing apparatus, wherein an area before an existing chapter is moved to the low-speed recording medium. An information recording / reproducing apparatus for recording information on a recording medium or reproducing the information from the recording medium,
A high-speed recording medium with a high transfer speed and a low-speed recording medium with a low transfer speed,
When recording video / audio content on the recording medium, a part of the video / audio content is stored in the high-speed recording medium, and the other part is stored in the low-speed recording medium,
When the data entity of the area including the existing chapter is deleted, an additional chapter is added to the head of the adjacent area after the data entity and included in the area of a certain length from the position where the additional chapter is assigned. An information recording / reproducing apparatus for moving data recorded on the high-speed recording medium to the low-speed recording medium.

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