JP2003045161A - Method of editing digital audiovisual information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of editing audiovisual information which is rapidly and easily capable of executing edition processing, such as deletion and insertion of DVD video streams. SOLUTION: This method of editing the digital audiovisual information forms fresh the audiovisual data streams by deleting the desired segments of the audiovisual data streams multiplexed by a DVD video format. Among the data streams of the DVD video format, the beginning points and end points of the deleted segments are specified and the data stream before the point just before the beginning point of the deleted segments is determined as a first data file. The data stream after the point just after the end point of the deleted segments is determined as a second data file. The data steams before the edition are then divided and the end point of the first data file and the beginning point of the second data file are coupled. The address data of the data streams of the second data file is rewritten in such a manner that the address data of the first data file and the address data of the second data file are matched.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for editing, recording, and reproducing a video signal and an audio signal on a digital video medium, and in particular, an editing process such as deletion or insertion of a DVD video stream can be executed easily in a short time. Audio / video information editing method and DVD video recording standard (DV
Information recorded in the D-VR standard) is recorded in the DVD video standard (DVD
-Editing method of audio / video information that can be reproduced or recorded in real time after being converted to (VIDEO standard) information.

[0002]

2. Description of the Related Art This type of DVD is widely used for home video software such as movies, and has, for example, a multi-language function capable of selecting a desired language from a plurality of languages and a desired language from a plurality of different camera angles. A multi-angle function that allows you to select a video from the camera angle, a multi-story function that allows you to select the video and audio of a desired story from multiple stories, and a pattern that can cut extreme scenes depending on the audience such as infants and minors. A rental lock function and a multi-aspect function that allows you to select the original widescreen image according to the monitor type are available.

A DVD is provided to a user through an authoring process for recording a signal to be recorded on a disc master and a replication process for mass-producing the master.

In the DVD authoring process, as shown in FIG. 13, first, in the first process, an audio digital signal is converted into
For example, while being encoded by the Dolby Digital system (AC-3), a video digital signal is encoded by MPEG2 at a variable rate. Then, the coded audio data and video data are multiplexed at regular intervals, for example, in the minimum unit (GOP: Group of pictures) of a single image defined by the MPEG2 standard. This multiplexed information is recorded in the storage device for each title. At the time of this multiplexing, navigation pack data conforming to the DVD video standard is also generated and recorded in the storage device. Then, in the next second process, the multiplexed encoded data recorded in the storage device and the navigation pack data recorded in the storage device are multiplexed and recorded in the storage device as a DVD video stream.

[0005]

By the way, with respect to one DVD video stream encoded and multiplexed by the DVD video standard, an arbitrary portion of the stream may be deleted,
Or by inserting a new video and audio stream,
It can be edited into a desired DVD video stream.

[0006] Editing processing such as partial deletion and insertion of the DVD video stream is first performed by the multiplexed DV.
The D video stream is once decoded to be separated into audio data and video data before multiplexing, and a desired portion of audio data and video data is deleted or inserted in the separated state. Then, the audio data and the video data, which have been deleted or inserted, are encoded and multiplexed again to obtain a desired DVD video stream.

However, in such conventional deletion or insertion processing, since the deletion or insertion processing is performed in a state where the DVD video stream is decoded, the deleted or inserted processing audio data and video data are re-multiplexed. When
Since it is also necessary to recalculate navigation pack data such as time information and address information, there is a problem that a plurality of processing steps are required by a dedicated editing device to do so, and the processing time becomes long.

The present invention has been made in view of the above problems of the prior art, and provides an audio / video information editing method capable of easily executing editing processing such as deletion and insertion of a DVD video stream in a short time. The first purpose is to provide.

By the way, in the DVD recording system, a DVD video format mainly recorded in a DVD-ROM medium and a DV video format mainly recorded in a DVD-RW medium.
D-video recording formats are known.

The DVD video format is composed of a set of video object units (VOBU) including a navigation pack (NVPCK) and an integer number of GOPs. The navigation pack includes audio and video data attributes and control data (navigation). data)
It is included.

On the other hand, in the DVD video recording format, the above-mentioned navigation pack does not exist, and as an alternative navigation data, a playlist in which the reproduction order of chapters is recorded and the time of the video object unit for trick play are recorded. It has a map by which playback control is performed.

[0012] As described above, the DVD video format and the DVD video recording format are different from each other particularly in the structure of navigation data, so that a reproduction apparatus dedicated to each other is required.

The present invention has been made in view of the above problems of the prior art, and the information recorded in the DVD video recording standard (DVD-VR standard) is converted into the DVD video standard (DVD-VIDEO standard). It is a second object of the present invention to provide a method of editing audio / video information that can be reproduced or recorded in real time after being converted into the above information.

[0014]

SUMMARY OF THE INVENTION 1. Deletion Function [1] In order to achieve the first object, the first aspect of the present invention
According to the aspect, there is provided a method for editing digital audio / video information, which deletes a desired part of an audio / video data stream multiplexed in the DVD video format to generate an audio / video data stream in a new DVD video format, (1) Identifying a start point and an end point of the deleted portion in the data stream of the DVD video format, and (2) storing address data immediately before the start point of the deleted portion and address data immediately after the end point. And (3) using the data stream immediately before the start point of the deleted portion as the first data file and the data stream immediately after the end point of the deleted portion as the second data file, Dividing step, (4) start point address data and end point of the first data file And dress data, a step of storing the source address data and end address data of the second data file to the file index, (5)
Connecting the end point of the first data file and the start point of the second data file, and (6) so that the address data of the first data file and the address data of the second data file match. And a step of rewriting address data of a data stream of the second data file with reference to the file index, the method for editing digital audiovisual information is provided (claim 1).

According to the present invention, when a desired portion of the data stream of the DVD video format is deleted, the processing is performed in the DVD video format as it is without compositing the data stream. That is, when the streams after the deletion are combined, the address data at the connection point becomes discontinuous, and it is necessary to rewrite this. However, in the present invention, the front part and the rear part of the deleted part are provided one by one. Addresses in one data file are consecutive because they are handled as data files. Therefore, if the start and end addresses of each are stored in advance in the file index, after combining both data files, the start and end addresses of the rear file can be rewritten with simple logic by referring to the file index. You can

Since such address rewriting processing can be easily realized by using a general-purpose CPU and a memory, a dedicated editing device required for recalculating navigation pack data is not required, and a plurality of processing steps by recalculation are also required. Since it can be omitted, processing time can be shortened and processing can be performed at low cost.

[2] Although not particularly limited in the above invention, data other than the address data of the data stream, for example, data for forward fast forward / reverse fast reverse reproduction (hereinafter referred to as reproduction control data), is included in the video. Although the address data of maximum 120 seconds before and after the reproduction start time of the object unit VOBU is included, when the front part and the rear part of the deleted portion are combined, the reproduction control data in the range of maximum 120 seconds before and after the connection point becomes discontinuous. Become.

Therefore, in the invention described in claim 2, the end point of the first data file and the start point of the second data file are combined, and the address data of the first data file and the second data file are combined. The address data of the data stream of the second data file is rewritten by referring to the file index so that the address data of the data file matches, and then the reproduction control data of the first data file and the second data file are rewritten. The reproduction control data of the end area of the first data file and the reproduction control data of the start area of the second data file are referred to by referring to the file index so that the reproduction control data of the second data file match. It further has a process of rewriting.

In the present invention, as in the above-described address data rewriting process, the front part and the rear part of the deleted portion are treated as one data file each, so that the reproduction control data in one data file is continuous. And
Further, the rewriting process of the reproduction control data requires only the area before and after the connecting point, and the other areas are unnecessary. Therefore, if the playback control data at the start point and the end point are stored in advance in the file index, the playback control data in the area before and after the connection point can be rewritten with simple logic by referring to the file index after combining both data files. be able to.

Since the rewriting process of the reproduction control data can be easily realized by using the general-purpose CPU and the memory, a dedicated editing device required for recalculating the navigation pack data is not required, and a plurality of processes by the recalculation are performed. Since the steps can be omitted, the processing time can be shortened and the processing can be performed at low cost.

2. Insertion Function [1] In order to achieve the above first object, according to a second aspect of the present invention, a DVD is added to a desired portion of an audiovisual data stream multiplexed in a DVD video format.
A method for editing digital audio / video information for inserting audio / video data in a video format to generate an audio / video data stream in a new DVD video format,
(1) a step of identifying an insertion point in the data stream of the DVD video format, (2) a step of storing address data immediately before the insertion point and an address data immediately after the insertion point, and (3) the insertion point Dividing the data stream before editing into a data stream immediately before and before the first data file, and a data stream immediately after the insertion point as a second data file,
(4) Start point address data and end point address data of the first data file, start point address data and end point address data of the second data file,
Storing the start point address data and the end point address data of the data file to be inserted in the file index; and (5) combining the end point of the first data file and the start point of the data file to be inserted, Connecting the end point of the data file to be processed and the start point of the second data file, (6) address data of the first data file, address data of the data file to be inserted, and the second data Rewriting the address data of the data stream of the data file to be inserted and the address data of the data stream of the second data file with reference to the file index so that the address data of the file match. A method for editing digital audiovisual information is provided ( Motomeko 3).

According to the present invention, when the data stream is inserted into a desired portion of the data stream of the DVD video format, D
Processing is performed with the VD video format unchanged. That is, if the data stream is separated at the insertion point, and a new data stream is inserted and combined here, the address data at the two connection points becomes discontinuous, so this must be rewritten. Since the front part, the rear part, and the insertion part of the insertion point are treated as one data file, the addresses in one data file are continuous. Therefore, if the addresses of the start point and the end point are stored in advance in the file index, after the three data files are combined, it is possible to easily refer to the file index from the start address of the insertion file to the end address of the rear file. It can be rewritten with logic.

Since such address rewriting processing can be easily realized by using a general-purpose CPU and a memory, a dedicated editing device required for recalculating navigation pack data is not required, and a plurality of processing steps due to recalculation are also required. Since it can be omitted, processing time can be shortened and processing can be performed at low cost.

[2] Although not particularly limited in the above invention, the reproduction control data other than the address data of the data stream is, for example, maximum before and after the reproduction start time of the video object unit VOBU including the data, as described above. Although the address data of 120 seconds is included, when the insertion file is inserted and the three files are combined, the reproduction control data in the range of maximum 120 seconds before and after the two connection points becomes discontinuous.

Therefore, in the invention according to claim 4, the end point of the first data file and the start point of the data file to be inserted are combined, and the end point of the data file to be inserted and the second data are combined. By referring to the file index, the start point of the file is combined and the address data of the first data file, the address data of the data file to be inserted, and the address data of the second data file are matched. Rewriting the address data of the data stream of the data file to be inserted and the address data of the data stream of the second data file, and then reproducing control data of the first data file and reproducing the data file to be inserted. The control data and the reproduction control data of the second data file are As case, the file index with reference to the first starting point region and the second and the reproduction control data of the end point area of the insertion to be a data file and the reproduction control data of the end point area of a data file
The process further includes the step of rewriting the reproduction control data of the start point area of the data file of.

In the present invention, as in the above-described address data rewriting process, the front portion, the rear portion, and the insertion portion of the insertion point are treated as one data file, so that the reproduction control data in one data file is handled. Is continuous, and the rewriting process of this playback control data is
Only the areas before and after the two connection points are needed, and the other areas are unnecessary. Therefore, if the playback control data of the start point and the end point of each file are stored in the file index in advance, after the three data files are linked, the playback control data of the areas before and after the two link points are referred to by referring to the file index. It can be rewritten with simple logic.

Since the rewriting process of the reproduction control data can be easily realized by using the general-purpose CPU and the memory, a dedicated editing device required for recalculating the navigation pack data is not required, and a plurality of processes by the recalculation are performed. Since the steps can be omitted, the processing time can be shortened and the processing can be performed at low cost.

3. Deletion / Insertion Function [1] In order to achieve the above first object, according to a third aspect of the present invention, a desired portion of an audio / video data stream multiplexed in a DVD video format is deleted, Is a method of editing digital audio / video information, wherein the audio / video data stream of a new DVD-Video format is generated by inserting in a desired portion.
A step of identifying a start point and an end point of the deleted portion in the data stream of the D video format;
In the VD video format data stream, a step of specifying an insertion point, (3) a step of storing address data immediately before the start point of the deleted portion and a step of storing address data immediately after the end point, and (4) the deletion The data stream immediately before the start point of the part is the first data file,
Dividing the data stream before editing into a data stream immediately after the end point of the deleted portion as a second data file; (5) starting point address data and ending point address data of the first data file; Storing the start point address data and the end point address data of the second data file in a file index, and (6) connecting the end point of the first data file and the start point of the second data file,
(7) The second index is referenced by referring to the file index so that the address data of the first data file matches the address data of the second data file.
Rewriting the address data of the data stream of the data file, and (8) storing the address data immediately before the insertion point and the address data immediately after the insertion point,
(9) The data stream immediately before the insertion point is set to the third
The data stream immediately after the insertion point as a fourth data file, and dividing the data stream rewritten in the step (7), and (10) the start point of the third data file. Storing the address data and the end point address data, the start point address data and the end point address data of the fourth data file, and the start point address data and the end point address data of the data file to be inserted in a file index, (11) Connecting the end point of the third data file and the start point of the data file to be inserted, and connecting the end point of the data file to be inserted and the start point of the fourth data file, (12) Third
Of the data stream of the data file to be inserted so as to match the address data of the data file, the address data of the data file to be inserted, and the address data of the fourth data file. Rewriting the address data and the address data of the data stream of the fourth data file is provided (Claim 5).

The present invention is an editing method for deleting a desired part of the same data stream and inserting it in another part, and has the same effect as the invention according to the first and second aspects described above. .

[2] Also, although not particularly limited to the above-mentioned invention, reproduction control data other than the address data of the data stream can be reproduced by deleting and inserting and combining the files to reproduce the range before and after the deletion point and the insertion point. Since the control data is discontinuous, in the invention of claim 6,
The file index is combined so that the end point of the first data file and the start point of the second data file are combined so that the address data of the first data file and the address data of the second data file match. After rewriting the address data of the data stream of the second data file, the reproduction control data of the first data file and the reproduction control data of the second data file are matched so that The method further includes the step of rewriting the reproduction control data of the end area of the first data file and the reproduction control data of the start area of the second data file with reference to the file index.

According to the invention of claim 7, the third
The end point of the data file and the start point of the data file to be inserted, the end point of the data file to be inserted and the start point of the fourth data file are combined, and the address data of the third data file is combined. , The address data of the data stream of the data file to be inserted and the fourth data file of the fourth data file so that the address data of the data file to be inserted and the address data of the fourth data file match. After rewriting the address data of the data stream of the data file, the reproduction control data of the third data file, the reproduction control data of the data file to be inserted, and the reproduction control data of the fourth data file are matched. See the file index above The method further comprises the step of rewriting the reproduction control data of the end area of the third data file, the reproduction control data of the start area and end area of the data file to be inserted, and the reproduction control data of the start area of the fourth data file. .

Also in the present invention, the above-mentioned first and second
The same operational effects as the invention according to the viewpoint are obtained.

4. DVD-VR editing reproduction recording function In order to achieve the above-mentioned second object, according to a fourth aspect of the present invention, an audio / video data stream multiplexed in a DVD video recording format is converted into a DVD video format, A method of editing digital audio / video information to be reproduced and / or recorded, comprising: (1) D
Reading a data stream of a VD video recording format and extracting reproduction control data; (2) generating reproduction control data of a DVD video format based on the reproduction control data extracted in the above step; (3) A method for editing digital audio / video information is provided, which comprises a step of multiplexing the generated reproduction control data and a data stream of the DVD video recording format (claim 8).

Decoding the multiplexed audio / video data into an audio signal and a video signal, respectively,
And reproducing the decoded audio signal and video signal (claim 9).

Further, the method may further comprise the step of recording the multiplexed audiovisual data on a recording medium (claim 10).

In order to reproduce the data stream of the DVD video recording format on the reproducing apparatus of the DVD video format, the navigation pack may be generated based on the reproduction control data of the data stream of the DVD video recording format.

According to the present invention, the reproduction control data is extracted when the data stream of the DVD video recording format is read, and the reproduction control data of the DVD video format is extracted based on the extracted reproduction control data.
That is, a navigation pack is generated. Then, the generated reproduction control data and the DV previously read.
The data stream of the D video recording format is multiplexed. In this process, the process of extracting the reproduction control data from the data stream of the DVD video recording format and the process of generating the navigation pack based on the extracted reproduction control data can be realized by a simple logic. Therefore, using a general-purpose CPU and memory without providing a dedicated device,
Easily convert DVD-VR data stream to DVD-V
It can be played back on an IDE playback device.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Device Configuration FIG. 1 is a block diagram showing an embodiment in which the recording device for digital audio / video information of the present invention is applied to an audio / video server (hereinafter, also referred to as an AV server). The AV server 100 according to the present embodiment records and reproduces audio signals and video signals provided by television broadcasting or the like on a hard disk while encoding and multiplexing them in real time. However, the source of audio information and video signals are
The information is not limited to television broadcasting, and information from various sources such as digital broadcasting and information communication via telephone lines can be captured.

As shown in the figure, analog audio signals and analog video signals input from the external input terminals are converted into digital audio signals and digital video signals by analog / digital converters 101 and 102, respectively.
It is sent to the data selector 103.

In addition to the external input terminal, the data selector 103 has an input terminal of an antenna for receiving a terrestrial signal, an input / output terminal of a public line for fetching a signal from the Internet, and Ethernet Ethernet (registered trademark). ) Input / output terminal, USB interface input terminal for capturing signals from digital cameras, SPDIF input terminal for capturing signals from audio devices, MP
IEEE 1394, which is a high-speed interface that captures signals from the input terminal of EG2, digital video camera, etc.
Information can be input / output from the input / output terminals of the interface.

The digital audio signal and the digital video signal selected by the data selector 103 are sent to an MPEG2 encoder processor 104 (hereinafter, simply referred to as an MPEG2 encoder), where the audio signal and the video signal are encoded, and, for example, After multiplexing for each GOP, each title is recorded in the storage device. At the time of this multiplexing, navigation pack data conforming to the DVD video standard is also generated and recorded as a DVD video stream in the storage device.

The DVD stream data generated by the MPEG2 encoder 104 is recorded in the hard disk drive 106 via the storage interface 105. The storage interface 105 records data in the hard disk drive 106, reads out the data recorded in the hard disk 106, and reads the data from the address / data bus 113 and the reproduction FIFO.
It is sent to the memory 107.

In the AV server 100 of this example, the storage interface 105 has a DVD-RAM, D as an external device (front end drive unit).
VD-RW, DVD-R108, CD-R, CD-RW
109 and the like can be connected, the data recorded in the hard disk drive 106 can be recorded in a medium such as a DVD or a CD, and the data stream recorded in these mediums can be taken in and edited into a desired data stream. The first invention), and the data stream recorded in the DVD-VR format can be read and reproduced (the second invention).

The data recorded in the reproduction FIFO memory 107 is sent to the MPEG2 decoder processor 110 (hereinafter, simply referred to as MPEG2 decoder), or is sent to the graphic accelerator 112 by switching the selector 111.

The MPEG2 decoder 110 decodes the DVD stream data into a digital audio signal and a digital video signal and sends them to the data selector 103. Then, these digital audio signals and digital video signals are decoded into analog audio signals and analog video signals by the digital / analog converters 114 and 115, sent to the TV monitor 116, and reproduced here.

The address / data bus 113 is an MPEG
2 encoder 104, storage interface 10
5, system controller 117, flash memory 1
18, the memory 119, the above-mentioned graphic accelerator 112, and the MPEG2 decoder 110 are connected,
Transfer data.

Of these, the system controller 117
Executes the following editing processing according to the program stored in the flash memory 118.

Deletion / Editing Process The AV server 100 of this embodiment is a multiplexed DVD.
A new DVD is created by deleting any part of the video format data stream and combining the remaining data streams.
A video format data stream can be generated. For example, cruel or horrifying scenes in a movie stream can be deleted, or commercial portions of a stream captured from a television broadcast can be deleted. The deletion / editing procedure will be described below with reference to FIGS.

First, the AV server 100 is set in the delete edit mode, and the data stream in the DVD video format is reproduced on the TV monitor 116. In this example, as shown in FIG. 2, a playback screen is set in the upper right of the TV monitor 116, a stream playback time axis is displayed under the cursor, and a delete start and a delete end are displayed in the upper left of the TV monitor 116. The still images of shall be displayed side by side.

Although not shown, the AV server 10
0 has a delete start button, a delete end button, a delete execute button, a delete cancel button, and an edit execute button which function in the delete edit mode.

The user presses the delete start button when the desired delete start scene comes while looking at the reproduction screen of the TV monitor 116 (FIG. 2A). If the address at this point is, for example, 1800 as shown in FIG. 3A, the address of the start point of the front data stream (that is, 0) and the address immediately before the address of this deletion start (that is, 1799). Is stored in the file index (see FIG. 3G) of the memory 119 as the video object file 1 (VOB1). Since the memory 119 also stores the PGC-PG map included in the stream shown in FIG. 3F, addresses other than the deletion point refer to this PGC-PG map. By pressing this delete start button,
As shown in FIG. 2A, a still image at the deletion start point is cut out at the upper left of the TV monitor 116.

Next, the user looks at the playback screen of the TV monitor 116 and presses the delete end button when the desired delete end scene comes (FIG. 2 (B)). If the address at this point is, for example, 2199 as shown in FIG. 3 (A), the address immediately after the address of this deletion end (that is, 2200) and the address of the end of the rear data stream (that is, 3999) are The memory 119 is used as the file 2 (VOB2) of the video object.
In the file index (see FIG. 3G). By pressing this delete end button, a still image at the delete end point is cut out at the upper left of the TV monitor 116 as shown in FIG. 2 (C).

Further, the user presses the delete start button when the desired next delete start scene comes while looking at the reproduction screen of the TV monitor 116 in order to retrieve the next delete portion (FIG. 2 (D)). If the address at this point is, for example, 2300 as shown in FIG. 3B, the address of the start point of the front data stream (that is, the previous 2200) and the address immediately before the address of this deletion start (that is, 2299). ) And are stored as a video object file 2 (VOB2) in the file index (see FIG. 3H) of the memory 119. By pressing this delete start button, a still image at the delete start point is cut out at the upper left of the TV monitor 116 as shown in FIG.

Next, the user presses the delete end button when the desired delete end scene comes while looking at the playback screen of the TV monitor 116 (FIG. 2 (D)). If the address at this point is, for example, 3499 as shown in FIG. 3B, the address immediately after the address of this deletion end (that is, 3500) and the address of the end of the rear data stream (that is, 3999) are The memory 119 is used as the file 3 (VOB3) of the video object.
In the file index (see FIG. 3G). By pressing this delete end button, a still image at the delete end point is cut out at the upper left of the TV monitor 116 as shown in FIG.

When all the deleted parts have been selected, the edit execution button is pressed. As a result, the three data files V
OB1, VOB2 and VOB3 are combined to generate a new multiplexed audiovisual data stream. However, as shown in FIG. 3H, reproduction control data such as address data at the connection point between VOB1 and VOB2 and the connection point between VOB2 and VOB3 are discontinuous.

Then, next, data rewriting processing is performed so that these reproduction control data are continuously aligned, but the VTS chapter map information, cell address, and VOBU address of these reproduction control data are deleted. It can be easily obtained by subtracting the length of the part, and the obtained data is overwritten (Fig. 3 (E) (I)).
reference).

The VOBU-SRI data used for trick play such as forward fast forward and reverse fast reverse reproduction is
The editing process is performed according to the procedure shown in FIG.

The VOBU-SRI data is shown in FIG.
As shown in the data format of No. 2, the data search control information DSI included in the navigation pack data NVPCK.
Information for forward fast-forward / reverse fast-reverse reproduction included in the video object unit VOBU including the data search control information DSI. 120 seconds) is a table in which the start address of the video object unit is reproduced. There are 20 in each of the forward direction and the backward direction. Figure 4
It shows in (A).

First, description will be given by taking an example of deletion at one place shown in FIG. 3A. As shown in FIGS. 4B to 4D, the data stream has a point A at address 1800 and an address 2199. Although it is deleted and combined at the point B, as described above, the VOBU-SRI data describes the start address of the video object unit that is reproduced up to 120 seconds before and after the reproduction start time of the video object unit. Therefore, as shown in FIG. 4D, the VOBU-SRI in the range of 120 seconds before and after the connection point
The data will need to be rewritten. However, since the SRI data in the backward direction among the SRI data in the first half file VOB1 is continuous, only the SRI data in the forward direction is rewritten. Similarly, of the SRI data of the latter half file VOB2, since the SRI data in the forward direction is continuous, only the SRI data in the backward direction is rewritten. This rewriting process can also be easily obtained by subtracting the length of the deleted portion as in the above-mentioned address rewriting process, and the obtained data is overwritten.

By the above procedure, a new DVD video format data stream in which the portion desired by the user is deleted can be easily generated at low cost.

Insertion / Editing Process The AV server 100 of the present embodiment is a multiplexed DVD.
A data stream of another DVD video format can be inserted into an arbitrary portion of the data stream of the video format to generate a data stream of a new DVD video format. For example, it is possible to insert a specific scene in the middle of a movie stream, insert a commercial, or delete an arbitrary part of one stream and insert it in another part. The deletion / editing procedure will be described below with reference to FIGS.

First, FIG. 5 shows T when the data stream to be inserted is cut out from the insertion source data stream and is inserted into an arbitrary part of the insertion destination data stream.
It is a figure which shows a V monitor. In this case, the procedure when the data stream of the insertion source and the data stream of the insertion destination are different files (different video object sets) are shown in FIG.
7 shows a procedure in the case where the data stream of the insertion source and the data stream of the insertion destination are the same file (cut out and inserted in one video object set).

First, FIG. 5 and FIG. 6 show the processing procedure when the insertion source and the insertion destination are different video object sets.
Will be described with reference to. First, the AV server 100 is set to the insert edit mode, and the data stream in the DVD video format which is the insert source is reproduced on the TV monitor 116.
In this example, as shown in FIG. 5, a reproduction screen is set in the upper right of the TV monitor 116, a reproduction time axis of the stream is displayed under the cursor, and a specified insertion section is displayed in the upper left of the TV monitor 116. Shall be played back frame by frame and displayed.

The user presses the insertion start button when the intended insertion start scene comes while looking at the reproduction screen of the TV monitor 116 (FIG. 5 (A)). It is assumed that the address at this point is 1200, for example, as shown in FIG.

Next, the user presses the insertion end button when the desired insertion end scene comes while looking at the playback screen of the TV monitor 116 (FIG. 5 (A)). If the address at this point is, for example, 1799 as shown in FIG. 6A, the address 1200 of the previous insertion start and the address 1799 of this insertion end are stored as a file x (VOBx) of the insertion video object in the memory. 11
9 for temporary storage.

In this example, when the insertion start and insertion end positions are determined, the frame-by-frame display of the designated section is cyclically performed, and the user inserts the image by viewing the image displayed on the upper left of the TV monitor 116. You can check the stream. In this frame advance, the specified section is equally divided and displayed as a 100-frame still image.

Next, the user views the data stream in the DVD video format, which is the insertion destination, on the TV monitor 116.
Play back to, and while watching this playback screen, press the insert start button when the scene at the desired insertion position comes (Fig. 5
(B)). At this time, the still image at the insertion position is displayed on the frame advance screen on the upper left of the TV monitor 116. It is assumed that the address at this point is 2500 as shown in FIG. 6 (B).

When the selection of the insertion position is completed, the address of the start point of the data stream at the front of the insertion position (that is, 0) and the address immediately before the address 2500 of this insertion position (that is, 2499) are transferred to the video object file. 1 (VOB1), and the start address 1200 and end address 1799 of the insertion file x temporarily stored in advance are used as the video object file 2 (VOB2), and the start point of the data stream at the rear of the insertion position. Address 2500 and end address 29
99 and video object file 3 (VOB
3) and the file index of the memory 119 (see FIG. 6).
(See (F)).

Then, by pressing the insert execution button, the file of the insertion source is inserted at the position of the address 2500 of the insertion destination stream, and a new multiplexed audio-video data stream is generated. However, as shown in FIG. 6F, the connection point between VOB1 and VOB2 and the VOB
The reproduction control data such as the address data at the connection point between 2 and VOB3 becomes discontinuous.

Then, next, data rewriting processing is performed so that these reproduction control data are continuously aligned, but the VTS chapter map information, cell address, and VOBU address of these reproduction control data are deleted. It can be easily obtained by adding the lengths of the parts, and the obtained data is overwritten. Note that FIG. 6 (G)
The PGC-PG map shown in (1) is obtained by re-indexing the map before insertion shown in (E) of FIG.

On the other hand, FIG. 7 is a diagram showing a processing procedure when the insertion source and the insertion destination are the same video object set, and the basic procedure is the same as that shown in FIG. 6 described above. is there.

That is, first, the AV server 100 is set to the insertion edit mode, and the data stream of the DVD video format which is the insertion source and the insertion destination is set to the TV monitor 11.
Play to 6.

The user presses the insertion start button when the desired insertion start scene comes while looking at the reproduction screen of the TV monitor 116 (FIG. 5 (A)). It is assumed that the address at this point is 1200 as shown in FIG.

Next, the user presses the insertion end button when the intended insertion end scene comes while looking at the playback screen of the TV monitor 116 (FIG. 5 (A)). If the address at this point is, for example, 1799 as shown in FIG. 7A, the address 1200 of the previous insertion start and the address 1799 of this insertion end are stored as a file x (VOBx) of the insertion video object in the memory. 11
9 for temporary storage.

Next, the user presses the insertion start button when the scene at the intended insertion position comes while looking at the playback screen (FIG. 5 (B)). The address at this point is, for example, in FIG.
It is assumed that the value is 2500 as shown in (B).

When the selection of the insertion position is completed, the address of the starting point of the data stream at the front of the insertion position (ie 0) and the address immediately before the address 2500 of this insertion position (ie 2499) are set to the file of the video object. 1 (VOB1), and the start address 1200 and end address 1799 of the insertion file x temporarily stored in advance are used as the video object file 2 (VOB2), and the start point of the data stream at the rear of the insertion position. Address 2500 and end address 29
99 and video object file 3 (VOB
3) and the file index of the memory 119 (see FIG. 7).
(See (F)).

Then, by pressing the insert execution button, the insert file is inserted at the position of the address 2500 of the data stream, and a new multiplexed audio / video data stream is generated. However, as shown in FIG. 7F, reproduction control data such as address data at the connection point between VOB1 and VOB2 and the connection point between VOB2 and VOB3 are discontinuous. Therefore, next, data rewriting processing is performed so that these reproduction control data are continuously matched.
The S chapter map information, the cell address, and the VOBU address can be easily obtained by adding the length of the deleted portion, and the obtained data is overwritten.

The VOBU-SRI data used for trick play such as forward fast forward and reverse fast reverse reproduction is
The editing process is performed according to the procedure shown in FIGS. The basic processing is the same as that in the case of the above-mentioned deletion editing.

First, description will be made by taking an example of insertion at the location shown in FIG. 6, and as shown in FIG. 8A, the data stream to be inserted is point A at address 1200 and address 1
It is cut out at the point B of 799 and inserted at the position of the address 2500 shown in FIG. 8B. As described above, the VOBU-SRI data is reproduced up to 120 seconds before and after the reproduction start time of the video object unit. Since the start address of the video object unit to be written is described, it is necessary to rewrite the VOBU-SRI data in the range of 120 seconds before and after the two connection points as shown in FIG. 8C. Become. However, since the SRI data in the backward direction among the SRI data in the first half file VOB1 is continuous, only the SRI data in the forward direction is rewritten. Similarly, of the SRI data at the beginning of the intermediate part file VOB2, the SRI data in the forward direction is continuous, so only the SRI data in the backward direction is rewritten and the SRI data at the end is rewritten.
Of the RI data, the SRI data in the backward direction is continuous, so only the SRI data in the forward direction is rewritten. Also, the SRI of the latter half file VOB2
Of the data, since the SRI data in the forward direction is continuous, only the SRI data in the backward direction is rewritten. Similar to the above-mentioned address rewriting process, these rewriting processes can be easily obtained by adding the length of the deleted portion, and the obtained data is overwritten.

By the above procedure, a new DVD video format data stream in which the portion desired by the user is deleted can be easily generated at low cost.

DVD-VR Playback Function Next, the function of playing back from a disc recorded in the DVD-VR format using the AV server of this example will be described. FIG. 9 is a block diagram showing a reproducing apparatus for a DVD-VR recorded image. Here, it is assumed that the DVD-VR format data stream is input from the front-end drive 108.

The DVD-VR format data stream input from the front end drive 108 is
Instead of the navigation pack included in the data stream of the DVD-VIDEO format, it has navigation data including a playlist in which chapter reproduction order is recorded and a time map of a video object unit for trick play, thereby controlling reproduction. Is executed. Therefore, the DV transmitted from the front-end drive 108 to the storage interface 105
The navigation data is extracted from the D-VR format data stream to the system controller 117, which is a control microcomputer, where the DVD-VIDEO format navigation packs NVPCK and DVD-V are extracted.
A navigation pack NVPCK is generated using the correspondence map with the navigation data in the R format.

Then, the storage interface 10
5, the video recording stream is sent to the MPEG2 encoder 104, and the navigation pack data NVPCK newly generated from the system controller 117 is sent to the MPEG2 encoder 104, where they are multiplexed and then DVD-VIDEO.
It is a data stream of the format. Subsequent reproduction processing is decoded by the MPEG2 decoder 110 and the graphic accelerator 112, and then displayed on the TV monitor 116 or the like, as in the case of the normal DVD-VIDEO format data stream.

As described above, according to the reproduction processing method of this example, the DVD-VIDEO reproducing apparatus is used to reproduce the data stream of the DVD-VR format in real time by adding only the processing software of the system controller 117. can do.

In FIG. 10, a DVD-VR format data stream is input from the front-end drive 108 and is reproduced at the same time as the DVD-VR in real time.
Converted to VIDEO format, this DVD-VID
3 is a block diagram showing a playback / recording device that records an EO format data stream in a hard disk drive 106. FIG.

On the other hand, in FIG. 11, a DVD-VIDEO format data stream recorded in the hard disk drive 106 or the like is converted into a DVD-VR format data stream in real time, and the front end drive 108 outputs a DVD disc ( DV
It is a block diagram which shows the reproducing / recording apparatus which records on D-RAM / RW / R).

In this case, the hard disk drive 106
Sent from the storage interface 105 to the D
The VMG and the video title set information VTS in the data format shown in FIG. 12 are extracted from the VD-VIDEO format data stream to the system controller 117, where the navigation pack NVPCK and DVD-VR in the DVD-VIDEO format are extracted.
The navigation pack data in the DVD-VR format is generated using the correspondence map with the navigation data in the format. The DVD-VR format navigation data can be generated by the DVD-VIDEO format VMG, VTS, and VOBU-TMAP, and the VOBU-TMAP is sent from the MPEG encoder 104 to the system controller 117.

Then, the storage interface 10
5, the video stream from the MPEG2 encoder 104
The video recording stream is generated here, and this is again transmitted to the storage interface 105. Here, by adding the navigation data newly generated from the system controller 117, the data stream in the DVD-VR format is added. Is recorded on the medium by the front end drive 108.

As described above, according to the reproducing / recording processing method of this embodiment, the DVD-VIDEO reproducing / recording apparatus is used, and only the processing software of the system controller 117 is added, so that the data stream in the DVD-VR format can be reproduced in real time. You can play, record, and reverse conversion with.

The above-described embodiment is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above-described embodiment is intended to include all design changes and equivalents within the technical scope of the present invention.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a recording device for digital audio / video information of the present invention.

FIG. 2 is a diagram showing a TV monitor for explaining the deletion editing method of the present invention.

FIG. 3 is a diagram showing a data format and a file index for explaining the deletion editing method of the present invention.

FIG. 4 is a diagram showing a data format for explaining a deletion editing method of the present invention.

FIG. 5 is a diagram showing a TV monitor for explaining the insertion editing method of the present invention.

FIG. 6 is a diagram showing a data format and a file index for explaining the insertion editing method of the present invention.

FIG. 7 is a diagram showing a data format and a file index for explaining another insertion editing method of the present invention.

FIG. 8 is a diagram showing a data format for explaining the insertion editing method of the present invention.

FIG. 9 is a block diagram showing a DVD-VR reproducing device of the present invention.

FIG. 10 is a block diagram showing another DVD-VR reproducing apparatus of the present invention.

FIG. 11 is a block diagram showing still another DVD-VR reproducing apparatus of the present invention.

FIG. 12 is a diagram showing a DVD-VIDEO format.

FIG. 13 is a diagram for explaining an authoring process.

[Explanation of symbols]

100 ... AV server 104 ... MPEG2 encoder 106 ... Hard disk 110 ... MPEG2 decoder

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Claims (10)

[Claims] 1. A method of editing digital audio / video information, wherein a desired portion of an audio / video data stream multiplexed in a DVD video format is deleted to generate an audio / video data stream of a new DVD video format, comprising: 1) a step of identifying a start point and an end point of a deleted portion in the data stream of the DVD video format; and (2) a step of storing address data immediately before the start point of the deleted portion and address data immediately after the end point. (3) The data stream before editing is divided using the data stream immediately before the start point of the deleted portion as the first data file and the data stream immediately after the end point of the deleted portion as the second data file. (4) The start point address data and end point of the first data file Storing the address data and the start point address data and end point address data of the second data file in a file index, (5) the end point of the first data file and the start point of the second data file And (6) referring to the file index so that the address data of the first data file and the address data of the second data file match, the data stream of the second data file Rewriting the address data of the above method, and a method for editing digital audiovisual information. 2. The end point of the first data file and the start point of the second data file are combined so that the address data of the first data file and the address data of the second data file match. After rewriting the address data of the data stream of the second data file with reference to the file index, the reproduction control data of the first data file and the reproduction control data of the second data file are matched. 2. The method further comprising the step of rewriting the reproduction control data of the end area of the first data file and the reproduction control data of the start area of the second data file with reference to the file index. How to edit audio and video information. 3. A new DVD in which audio / video data of DVD video format is inserted into a desired portion of an audio / video data stream multiplexed in DVD video format.
A method for editing digital audio / video information for generating an audio / video data stream in a video format, comprising: (1) identifying an insertion point in the data stream in the DVD video format; and (2) immediately before the insertion point. And (3) storing the address data immediately after the insertion point and the address data immediately after the insertion point as a first data file, and the data stream immediately after the insertion point as a second data file. (4) Inserting the start point address data and end point address data of the first data file, and 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 (5) combining the end point of the first data file and the start point of the data file to be inserted, and storing the end point of the data file to be inserted and the start point of the second data file. And (6) address data of the first data file,
The file index is referred to so that the address data of the data file to be inserted and the address data of the second data file match, and the address data of the data stream of the data file to be inserted and the second data Rewriting the address data of the data stream of the data file, a method for editing digital audiovisual information. 4. The end point of the first data file and the start point of the data file to be inserted are combined, and the end point of the data file to be inserted and the start point of the second data file are combined. The address data of the first data file, the address data of the data file to be inserted, and the second data
So that the address data of the data file of
After rewriting the address data of the data stream of the data file to be inserted and the address data of the data stream of the second data file by referring to the file index, the reproduction control data of the first data file, Reproduction control data of a data file to be inserted and the second
So that the playback control data of the data file of
With reference to the file index, reproduction control data of the end area of the first data file, reproduction control data of the start area and end area of the data file to be inserted, and reproduction of the start area of the second data file. The method for editing audiovisual information according to claim 3, further comprising the step of rewriting control data. 5. A digital audio-video for deleting a desired part of an audio-video data stream multiplexed in a DVD-video format and inserting the desired part in the desired part to generate an audio-video data stream of a new DVD-video format. An information editing method, comprising: (1) identifying a start point and an end point of a deleted portion in the DVD video format data stream; and (2) identifying an insertion point in the DVD video format data stream. (3) storing address data immediately before the start point of the deleted portion and address data immediately after the end point, and (4) first and second data streams immediately before the start point of the deleted portion. A data file, and the data stream immediately after the end point of the deleted portion is the second data file. And dividing the pre-editing data stream, (5) file the start point address data and end point address data of the first data file, and the start point address data and end point address data of the second data file. Storing in an index; (6) combining the end point of the first data file and the start point of the second data file; (7) address data of the first data file and the second data file Rewriting the address data of the data stream of the second data file with reference to the file index so that the address data of the data file of (8) and the address data immediately before and after the insertion point And (9) storing the address data of A stream and a third data file, the data stream after just after the insertion point as a fourth data file (7)
(10) Inserting the start point address data and the end point address data of the third data file, the start point address data and the end point address data of the fourth data file, and Storing the start point address data and the end point address data of the data file to be stored in the file index, (11) combining the end point of the third data file and the start point of the data file to be inserted, and inserting the insertion point Connecting the end point of the power data file and the start point of the fourth data file, (12) Address data of the third data file, address data of the data file to be inserted, and the fourth data file Of the file index so that the address data of Referring to box, modifying the digital audiovisual information having a step of rewriting the address data of the data stream, the address data and the fourth data file of the data stream of the data file to be the insertion. 6. The end point of the first data file and the start point of the second data file are combined so that the address data of the first data file and the address data of the second data file match. After rewriting the address data of the data stream of the second data file with reference to the file index, the reproduction control data of the first data file and the reproduction control data of the second data file are matched. 6. The method further comprising the step of rewriting the reproduction control data of the end area of the first data file and the reproduction control data of the start area of the second data file with reference to the file index. How to edit audio and video information. 7. The end point of the third data file and the start point of the data file to be inserted are combined, and the end point of the data file to be inserted and the start point of the fourth data file are combined, Address data of a third data file, address data of the data file to be inserted, and the fourth
So that the address data of the data file of
After rewriting the address data of the data stream of the data file to be inserted and the address data of the data stream of the fourth data file with reference to the file index, the reproduction control data of the third data file, Reproduction control data of the data file to be inserted and the fourth
So that the playback control data of the data file of
With reference to the file index, the reproduction control data of the end area of the third data file, the reproduction control data of the start area and the end area of the data file to be inserted, and the reproduction of the start area of the fourth data file. 7. The audio / video information editing method according to claim 5, further comprising a step of rewriting the control data. 8. A method for editing digital audio / video information, which comprises converting an audio / video data stream multiplexed in a DVD video recording format into a DVD video format, and reproducing and / or recording the information, comprising: (1) the DVD video recording A step of reading the format data stream and extracting reproduction control data, and (2) reproducing the reproduction control data extracted in the step
A method of editing digital audiovisual information, comprising: converting into reproduction control data in a video format; and (3) multiplexing the converted reproduction control data and a data stream in the DVD video recording format. 9. The method further comprising: decoding the multiplexed audio / video data into an audio signal and a video signal, and reproducing the decoded audio signal and video signal. Item 8. A method for editing digital audiovisual information according to item 8. 10. The method for editing digital audio / video information according to claim 8, further comprising the step of recording the multiplexed audio / video data on a recording medium.