JP3566216B2 - Digital audio / video information recording device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording device for recording a video signal and an audio signal on a digital video medium, and more particularly to a recording device for audio and video information capable of automatically executing an authoring process.
[0002]
[Prior art]
For DVDs used in home video software such as movies, a multi-language function that allows the user to select a desired language from a plurality of languages, and a multi-angle function that allows the user to select the video of the desired camera angle from a plurality of different camera angles , Multi-story function to select the video and audio of the desired story from multiple stories, parental lock function to cut extreme scenes according to viewers such as infants and minors, monitor original wide image There is a multi-aspect function that can be selected according to the type.
[0003]
[Problems to be solved by the invention]
(1) Such a DVD is provided to a user through an authoring process of recording a signal to be recorded on a disc master and a replication process of mass-producing the master. In the authoring process, the various functions described above are edited. Skills are required. For this reason, there has been a demand for the development of a simple DVD recording apparatus that automatically records, for example, audio and video signals provided by television broadcasting with the above-described various functions added thereto.
[0004]
(2) FIG. 14 shows a data format recorded on a DVD. In the authoring step, the audio digital signal is encoded by, for example, the Dolby Digital method (AC-3), the video digital signal is encoded at a variable rate by MPEG2, and these encoded audio data and video data are Multiplexing is performed for each period, for example, in a minimum unit (GOP: Group of pictures) of an image that can be reproduced alone defined in the MPEG2 standard. Note that a unit defined by the DVD video standard and starting with a navigation pack (NVPCK) and including an integer number of GOPs is referred to as a VOBU (Video Object Unit). Hereinafter, a description will be given assuming that 1 GOP = 1 VOBU. As shown in the figure, a plurality of VOBUs form a single chapter (for example, a group of scenes), and a plurality of chapters form a single title (for example, one movie).
[0005]
One VOBU includes a navigation pack including only navigation data (that is, data relating to audio and video data attributes and control to be reproduced in the DVD video standard), and the control data includes reproduction control information (PCI : Presentation Control Information) and data search control information (DSI: Data Search Information), and the DSI includes data (VOBU / SRI: VOBU Search Information) for fast forward and reverse fast reverse reproduction.
[0006]
The VOBU / SRI is a table in which the head address of the VOBU reproduced at a predetermined time t before and after the reproduction start time of the VOBU including the DSI is recorded. Therefore, the VOBU / SRI to be stored in one encoded VOBU is determined at the end of VOBU encoding after a predetermined time t has elapsed since the encoding of the VOBU.
[0007]
For this reason, in the conventional authoring process, as shown in the first process of FIG. 15, the audio signal and the video signal are respectively encoded at a variable rate, multiplexed for each GOP, for example, and then stored in the storage device for each title. Record. At the time of this multiplexing, navigation pack data conforming to the DVD video standard is also generated and recorded in a 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 as a DVD video stream in the storage device.
[0008]
However, in the conventional authoring process, the encoded and multiplexed data and the navigation pack data are once recorded in the storage device for each title, and then the encoded and multiplexed data and the navigation pack data are multiplexed. DVD-Video could not be recorded in real time because of the sequential processing such as recording.
[0009]
(3) In some DVDs, a still image or a moving image at the head of each chapter in a title is displayed as a list as an index, and the user can select a still image or a moving image to reproduce from a desired chapter. Are known. In the authoring process of the still image index and the moving image index, after performing the first process and the second process shown in FIG. 16, in the third process, for each recorded title, the chapter division → the generation of the chapter index screen → Processing such as editing of the chapter index screen is sequentially performed, and this is encoded and recorded in the storage device.
[0010]
However, in the above-described conventional still image index or moving image index authoring processing, data encoded and multiplexed for each title is temporarily recorded in a storage device, and then chapter division → generation of a chapter index screen → chapter index screen The editing process is sequentially performed, and is encoded and recorded in the storage device. Therefore, only a person who is familiar with the DVD video standard can perform the authoring process and cannot be handled by general users.
[0011]
Summary of the Invention
An object of the present invention is to provide a digital audio / video information recording apparatus for recording audio and video signals provided from a television broadcast or other information providing sources onto a digital video medium while automatically and easily adding various functions. With the goal.
[0012]
(1)Real-time authoring of search information (Fig. 1)
To achieve the above object, according to a first aspect of the present invention,InputEncoding means for sequentially encoding each of the digital audio signal and the digital video signal; and at least a fixed unit of audio encoded data and video encoded data and search data encoded by the encoding means. Multiplexing means for sequentially multiplexing, and multiplexed by the multiplexing means.Fixed unitDataEvery fixed unitWhen multiplexing the search data by the recording means for sequentially recording and the multiplexing means,For undetermined search dataDummy data supply means for sequentially supplying dummy data as temporary search data,Each time the fixed unit of multiplexed data is generated, the determined temporary search data is extracted from the previously undetermined temporary search data, and this temporary search data isAnd a replacement unit for sequentially replacing the search data with the determined search data.
[0013]
Also,InputEach of the digital audio signal and the digital video signal is sequentially encoded, and at least, encoded audio encoded data and encoded video data are encoded.When sequentially multiplexing search data in fixed units, search dataAs temporary search dataTMe dataSupply and multiplex, This multiplexedFixed unitDataFor each such unitRecord sequentially,Each time the fixed unit of multiplexed data is generated, the determined temporary search data is extracted from the previously undetermined temporary search data, and this temporary search data isAnd a method for recording digital audiovisual information to be sequentially replaced with the determined search data.
[0014]
In the digital audio / video information recording apparatus and recording method according to the first aspect of the present invention, when recording the input audio and video signals as a DVD video stream, dummy data is temporarily recorded in the search data. When the contents of the search data are determined, the data is sequentially replaced, so that the DVD video data can be automatically generated almost in real time.
[0015]
(2)Real-time authoring of still image index (Fig. 2)
To achieve the above object, according to a second aspect of the present invention,In the present invention according to the first aspect,SaidBy multiplexing meansDivide multiplexed data sequentially for each chapterAnd record in the recording meansA chapter dividing unit that extracts a still image at the head of each chapter from the multiplexed data recorded in the recording unit, decodes the extracted still image, adjusts it to a predetermined size, synthesizes it on a chapter index screen, and An apparatus for recording digital audiovisual information, comprising: an index screen editing means for recording.
[0016]
Also,In the present invention according to the first aspect,The multiplexed data is sequentially divided for each chapter, the divided multiplexed data is sequentially recorded, a still image at the head of each chapter is extracted from the recorded multiplexed data, decoded, and decoded to a predetermined size. And record it on the chapter index screen.Having further stepsA method for recording digital audiovisual information is provided.
[0017]
In the digital audio / video information recording apparatus and recording method according to the second aspect of the present invention, the head still image of each chapter is extracted from the multiplexed data, decoded, adjusted to a predetermined size, and adjusted to a chapter index screen. A series of processes such as synthesizing and recording an image are automatically executed, so that DVD video information having a still image index can be easily obtained.
[0018]
(3)Real-time authoring of video index (Figure 3)
In order to achieve the above object, according to a third aspect of the present invention,In the present invention according to the first aspect,SaidBy multiplexing meansDivide multiplexed data sequentially for each chapterAnd record in the recording meansDividing by the chapter dividing means,SaidA first index for extracting and decoding a moving image in a desired range at the head of the chapter from the multiplexed data immediately after being recorded in the recording unit, adjusting the size of the moving image to a predetermined size, and synthesizing and recording it on a chapter index screen; Screen editing means, and second index screen editing means for, when the first moving image of a chapter is recorded by the first index screen editing means, encoding the recorded decoded data and recording the encoded data in the recording means, And a recording device for digital audiovisual information provided with:
[0019]
Also,In the present invention according to the first aspect,The multiplexed data is sequentially divided for each chapter, the divided multiplexed data is sequentially recorded, and a moving image in a desired range at the head of the chapter is extracted from the multiplexed data immediately after being divided and recorded. And decode it, adjust it to a predetermined size, synthesize and record it on the chapter index screen, and encode and record the recorded decoded data.Having further stepsA method for recording digital audiovisual information is provided.
[0020]
In the digital audio / video information recording apparatus and recording method according to the third aspect of the present invention, the leading moving image of each chapter is extracted from the multiplexed data, decoded, adjusted to a predetermined size, and adjusted to a chapter index screen. Since a series of processes such as combining and recording are performed automatically, it is possible to easily obtain DVD video information having a moving image index.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Device configuration
FIG. 4 is a block diagram showing an embodiment in which the digital audio / video information recording apparatus of the present invention is applied to an audio / video server (hereinafter, also referred to as an AV server). The AV server 100 of the present embodiment records and reproduces an audio signal and a video signal provided in a television broadcast or the like on a hard disk while encoding and multiplexing the audio signal and the video signal in real time. And a still image or moving image index screen is automatically added. However, the source of the audio information and the video signal is not limited to the television broadcast, but can take in information from any source such as digital broadcast and information communication through a telephone line.
[0022]
As shown in the drawing, analog audio signals and analog video signals input from external input terminals are converted into digital audio signals and digital video signals by analog / digital converters 101 and 102, respectively, and sent to a data selector 103. You.
[0023]
In addition to the external input terminal, the data selector 103 includes an input terminal of an antenna for receiving a terrestrial signal, an input / output terminal of a public line for receiving a signal from the Internet, an input / output terminal of an Ethernet, USB interface input terminal for capturing signals from video cameras, etc., SPDIF input terminal for capturing signals from audio equipment, MPEG2 input terminal, input / output terminals for IEEE 1394 interface which is a high-speed interface for capturing signals from digital video cameras, etc. It is possible to input and output information from.
[0024]
The digital audio signal and digital video signal selected by the data selector 103 are sent to an MPEG2 encoder processor 104 (corresponding to the encoding means of the present invention; hereinafter, simply referred to as an MPEG2 encoder), where the audio signal and the video signal are transmitted. Are multiplexed, for example, multiplexed for each GOP, and then 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 these are recorded in the storage device as a DVD video stream. At this time, the AV server 100 of the present embodiment executes a real-time authoring process of search information and a real-time authoring process of a still image index or a moving image index. This will be described later.
[0025]
DVD stream data generated by the MPEG2 encoder 104 is recorded via a storage interface 105 on a hard disk drive 106, which is a recording unit of the present invention. The storage interface 105 records data on the hard disk drive 106, reads data recorded on the hard disk 106, and sends the data to the address / data bus 113 and the reproduction FIFO memory 107.
[0026]
In the AV server 100 of the present example, a DVD-RAM, a DVD-RW, a DVD-R108, a CD-R, a CD-RW109, or the like as an external device (front-end drive unit) can be connected to the storage interface 105. The data recorded on the hard disk drive 106 can be recorded on a medium such as a DVD or a CD.
[0027]
The data recorded in the reproduction FIFO memory 107 is sent to an MPEG2 decoder processor 110 (corresponding to the decoding means of the present invention; hereinafter, simply referred to as an MPEG2 decoder), or the graphic accelerator 112 is switched by switching the selector 111. Sent to
[0028]
In the MPEG2 decoder 110, the DVD stream data is decoded into a digital audio signal and a digital video signal, and is sent to the data selector 103. 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 there.
[0029]
The address / data bus 113 connects the MPEG2 encoder 104, the storage interface 105, the system controller 117, the flash memory 118, the memory 119, the above-described graphic accelerator 112, and the MPEG2 decoder 110, and exchanges data.
[0030]
Among them, the system controller 117 automatically executes the following authoring processing according to the program stored in the flash memory 118.
[0031]
Real-time authoring of search information
The AV server 100 of this example automatically searches in real time for search information used for trick play when encoding and multiplexing audio and video at a variable rate in accordance with the DVD video standard and recording them on the hard disk drive 106. Authoring. That is, the data (VOBU / SRI) for the fast forward and reverse fast reverse reproduction described above is embedded in real time at the time of recording.
[0032]
6 shows the main hardware configuration extracted from the block diagram of FIG. 4, and FIG. 5 schematically shows the concept of the authoring process.
[0033]
As shown in the upper part of FIG. 6, the configuration that functions in the process of automatically embedding the search information VOBU / SRI includes an MPEG2 encoder 104 that executes encoding and multiplexing processes, an SDRAM 104m for buffering DVD video stream data, Navigation pack map buffer memory 119, data search control information DSI associated with dummy data, hard disk drive 106, buffer FIFO memory 105m for writing and reading to and from hard disk drive 106, replacement recorded in hard disk drive 106 A playback FIFO memory 107 for reading and playing back the completed DVD stream data, and an MPEG2 decoder 110 for executing a decoding process.
[0034]
Specific processing will be described with reference to FIGS.
First, each of the audio digital signal and the video digital signal input to the MPEG2 encoder 104 is encoded at a variable rate by the MPEG2 encoding module, and the encoded audio data and video data are transmitted at regular intervals (this example). Is multiplexed into the minimum unit GOP of an image that can be reproduced independently defined in the MPEG2 standard. This is indicated by 501 in FIG. In addition, at the time of this multiplexing, navigation pack data N conforming to the DVD video standard is generated. In this example, navigation pack information that is determined at the same time when encoding of one GOP is completed is embedded, but undetermined. For example, VOBU / SRI information includes dummy data n. By embedding n + 1, n + 2,..., DVD video stream data is generated. This DVD video stream data is indicated by 502 in FIG. 5, and is recorded on the hard disk drive 106.
[0035]
At the same time, VOBU / SRI information is generated every time one GOP is encoded (T2 immediately before completion of one GOP in the timing chart of FIG. 6). The VOBU / SRI information temporarily embedded in the hard disk drive 106 is sequentially overwritten via the map 119 (T5 in the timing chart of FIG. 6).
[0036]
The GOP overwritten in this way and in which the determined VOBU / SRI information is embedded can be reproduced, forward-fast-forwarded and reverse-fast-returned even during recording. An example of a data format in which the temporarily embedded dummy data is replaced with the determined VOBU / SRI is indicated by 503 in FIG. This data is decoded by the MPEG2 decoder 110 and can be viewed on the TV monitor 116 even during recording.
[0037]
Real-time authoring of still image index
When encoding and multiplexing audio and video at a variable rate and recording them on the hard disk drive 106 in accordance with the DVD video standard, the AV server 100 of this example converts the first still image of each chapter in the title into a chapter. A function of displaying a list on the index screen and directly searching for a chapter by selecting a desired still image on the chapter index screen is automatically authored in real time. That is, the user can obtain audiovisual information having a still image chapter index screen without performing any operation.
[0038]
FIG. 7 schematically shows the concept of the authoring process, and the upper diagram of FIG. 8 shows a main hardware configuration extracted from the block diagram of FIG.
[0039]
As shown in the upper part of FIG. 8, the configuration that functions in the process of automatically generating the still image index screen includes an MPEG2 encoder 104 that executes encoding and multiplexing processes, an SDRAM 104m for buffering DVD video stream data, The hard disk drive 106, a buffer FIFO memory 105 m for writing and reading to and from the hard disk drive 106, a graphic accelerator 112 for adjusting the leading still image of each chapter recorded on the hard disk drive 106 to an appropriate size, and a hard disk drive 106. A playback FIFO memory 107 for reading and playing back recorded DVD stream data, and an MPEG2 decoder 110 for executing decoding processing.
[0040]
Specific processing will be described with reference to FIGS. Note that the search information embedding process is also performed at the same time, but since this process has already been described, the description will focus on the still image index generation process.
[0041]
First, each of the audio digital signal and the video digital signal input to the MPEG2 encoder 104 is encoded at a variable rate by the MPEG2 encoding module, and the encoded audio data and video data are transmitted at regular intervals (this example). Is multiplexed into the minimum unit GOP of an image that can be reproduced independently defined in the MPEG2 standard. In addition, at the time of this multiplexing, navigation pack data N conforming to the DVD video standard is generated (as described above, navigation pack information determined at the same time encoding of one GOP is completed is embedded, but undetermined navigation pack information is embedded). For example, the VOBU / SRI information embeds dummy data n.n + 1, n + 2,... To generate DVD video stream data). This is recorded on the hard disk drive 106. At the same time, VOBU / SRI information is generated each time one GOP is encoded. Every time this VOBU / SRI information is determined, the VOBU / SRI information is temporarily embedded in the hard disk drive 106 via the map of the memory 119. VOBU / SRI information is sequentially overwritten. Also, a plurality of GOPs whose VOBU / SRI is overwritten and determined are automatically divided into chapters at regular intervals and recorded on the hard disk drive 106.
[0042]
Immediately after the completion of one title, the head still image of each chapter is read out from the DVD video stream data recorded on the hard disk drive 106 to the FIFO memory 105m, and is read out via the reproduction FIFO memory 107. Transfer to the graphic accelerator 112. As shown in FIG. 9, the chapter index screen incorporates a head still image of a plurality of chapters into the TV monitor, so that the transferred graphic image data has a size corresponding to one chapter index screen. At 112, the image is reduced and combined with the index screen. When the index screen extends over a plurality of screens, the navigation command for screen transition is embedded in the navigation pack data of one index screen (12 chapters in the example of FIG. 9), and at the same time, the screen transition icon is displayed on the previous index screen. Combine.
[0043]
Then, the reduced index screen data is sent to the MPEG2 encoder 104, where it is encoded and recorded on the hard disk drive 106.
[0044]
The chapter index screen thus authored is realized by reading the DVD video stream data of the index screen recorded on the hard disk drive 106.
[0045]
Real-time authoring of video index
In the above-described example, the still image is automatically embedded in the index screen. However, the leading moving image of each chapter can be embedded in the index screen. When encoding and multiplexing audio and video at a variable rate and recording them on the hard disk drive 106 in accordance with the DVD video standard, the AV server 100 of the present example assigns a chapter index to the first moving image of each chapter in the title. A function of displaying a list on the screen and directly searching for a chapter by selecting a desired moving image on the chapter index screen is automatically authored in real time. That is, the user can obtain audiovisual information having a chapter index screen of a moving image without performing any operation.
[0046]
FIGS. 10 and 11 schematically show the concept of the authoring process, and the upper diagrams of FIGS. 12 and 13 show main hardware configurations extracted from the block diagram of FIG.
[0047]
The configuration that functions in the process of automatically generating the moving image index screen includes an MPEG2 encoder 104 that executes encoding and multiplexing processes, a buffer for DVD video stream data, as shown in the upper diagrams of FIGS. SDRAM 104m, hard disk drive 106, buffer FIFO memory 105m for writing and reading to and from hard disk drive 106, graphic accelerator 112 for adjusting the first moving image of each chapter recorded in hard disk drive 106 to an appropriate size, hard disk drive A reproduction FIFO memory 107 for reading out and reproducing the DVD stream data recorded in the 106 and an MPEG2 decoder 110 for executing a decoding process.
[0048]
Specific processing will be described with reference to FIGS. The search information embedding process is also performed at the same time, but since this process has already been described, the description will focus on the moving image index generation process.
[0049]
First, each of the audio digital signal and the video digital signal input to the MPEG2 encoder 104 is encoded at a variable rate by the MPEG2 encoding module, and the encoded audio data and video data are transmitted at regular intervals (this example). Is multiplexed into the minimum unit GOP of an image that can be reproduced independently defined in the MPEG2 standard. In addition, at the time of this multiplexing, navigation pack data N conforming to the DVD video standard is generated (as described above, navigation pack information determined at the same time encoding of one GOP is completed is embedded, but undetermined navigation pack information is embedded). For example, the VOBU / SRI information embeds dummy data n.n + 1, n + 2,... To generate DVD video stream data). This is recorded on the hard disk drive 106. At the same time, VOBU / SRI information is generated each time one GOP is encoded. Every time this VOBU / SRI information is determined, the VOBU / SRI information is temporarily embedded in the hard disk drive 106 via the map of the memory 119. VOBU / SRI information is sequentially overwritten. Also, a plurality of GOPs whose VOBU / SRI is overwritten and determined are automatically divided into chapters at regular intervals and recorded on the hard disk drive 106.
[0050]
Immediately after the recording of one chapter is completed, a moving image within a desired range (for example, 30 seconds) at the beginning of each chapter is read out from the DVD video stream data recorded on the hard disk drive 106 to the FIFO memory 105m. Is transferred to the MPEG2 decoder 110 via the reproduction FIFO memory 107, where normal reproduction is performed. The index moving image is reproduced one frame at a time for each normal reproduction and transmitted to the graphic accelerator 112. The top image as the moving image index may be extracted based on time as shown in the above example, or may be detected up to the end of a scene and its range may be extracted. Further, these extraction ranges can be made variable.
[0051]
As shown in FIG. 9, the leading index of a plurality of chapters is incorporated in the TV monitor as shown in FIG. 9, so that the graphic accelerator 112 is set so that the transferred moving image data has a size corresponding to one chapter index screen. To reduce the size and compose it on the index screen. When the index screen extends over a plurality of screens, the navigation command for screen transition is embedded in the navigation pack data of one index screen (12 chapters in the example of FIG. 9), and at the same time, the screen transition icon is displayed on the previous index screen. Combine.
[0052]
Then, the combined index screen data is recorded on the hard disk drive 106 for each frame. The data recorded here is in a digital video format.
[0053]
When the processing of all chapters is completed, that is, when one title is completed, immediately after that, the first moving image of each chapter based on the digital video data recorded on the hard disk drive 106 is read out to the FIFO memory 105m, and this is read out from the FIFO memory 105m. The data is transferred to the graphic accelerator 112 via the memory 107. At this time, when the index screen extends over a plurality of screens, the navigation command for screen transition is embedded in the navigation pack data of one index screen, and at the same time, the screen transition icon is combined with the previous index screen.
[0054]
Then, the index screen data is sent to the MPEG2 encoder 104, where it is encoded in the DVD video format and then recorded on the hard disk drive 106.
[0055]
The chapter index screen thus authored is realized by reading the DVD video stream data of the index screen recorded on the hard disk drive 106.
[0056]
Incidentally, in the above-described example, the combined index screen data is once recorded in the digital video format in the hard disk drive 106, and when the processing of all chapters is completed, the data in the digital video format is converted to the DVD video format. This is because the MPEG2 encoder 104 is operating until all chapters are completed, so if another MPEG2 encoder is added, it can be directly converted to the DVD video format without recording in the digital video format. Can be converted. This is also within the scope of the present invention.
[0057]
The embodiments described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a recording apparatus for digital audio / video information according to a first aspect of the present invention.
FIG. 2 is a block diagram showing a recording apparatus for digital audio / video information according to a second aspect of the present invention.
FIG. 3 is a block diagram showing a recording apparatus for digital audio / video information according to a third aspect of the present invention.
FIG. 4 is a block diagram showing an embodiment of a digital audio / video information recording apparatus according to the present invention.
FIG. 5 is a conceptual diagram illustrating a real-time authoring process of search information according to the present invention.
FIG. 6 is a block diagram and a timing chart for explaining a real-time authoring process of search information according to the present invention.
FIG. 7 is a conceptual diagram for explaining a real-time authoring process of a still image index according to the present invention.
FIG. 8 is a block diagram and a timing chart for explaining a real-time authoring process of a still image index according to the present invention.
FIG. 9 is a diagram showing an example of a chapter index screen according to the present invention.
FIG. 10 is a conceptual diagram for explaining a real-time authoring process of a moving image index according to the present invention.
FIG. 11 is a conceptual diagram illustrating real-time authoring processing of a moving image index according to the present invention.
FIG. 12 is a block diagram and a timing chart for explaining a real-time authoring process of a moving image index according to the present invention.
FIG. 13 is a block diagram and a timing chart for explaining a real-time authoring process of a moving image index according to the present invention.
FIG. 14 is a diagram showing a data format recorded on a DVD.
FIG. 15 is a conceptual diagram showing a conventional search information authoring process.
FIG. 16 is a conceptual diagram showing a conventional still image / moving image index authoring process.
[Explanation of symbols]
11 coding means
12 multiplexing means
13 Recording means
14 ... Dummy data supply means
15 Replacement means

Claims (14)

Encoding means for sequentially encoding each of the input digital audio signal and digital video signal,
Multiplexing means for sequentially multiplexing the encoded data of the audio and the encoded data of the video and the search data, which are encoded by at least the encoding means, in a predetermined unit;
Recording means for sequentially recording data of a certain unit multiplexed by the multiplexing means for each certain unit ,
Dummy data supply means for sequentially supplying dummy data as provisional search data to search data that is undetermined when the search data is multiplexed by the multiplexing means,
Each time the fixed-unit multiplexed data is generated, the determined temporary search data is extracted from the previously undetermined temporary search data, and the temporary search data is replaced with the determined search data. And a replacing means for sequentially replacing the digital audio and video information. Decoding means for decoding the multiplexed data processed by the replacement means into an audio signal and a video signal, respectively;
2. The digital audio / video information recording apparatus according to claim 1, further comprising: a reproducing unit that reproduces the audio signal and the video signal decoded by the decoding unit. Chapter division means for sequentially dividing the data multiplexed by the multiplexing means for each chapter and recording the divided data in the recording means ,
Index screen editing means for extracting and decoding the still image at the beginning of each chapter from the multiplexed data recorded in the recording means, adjusting it to a predetermined size, synthesizing it with a chapter index screen and recording it in the recording means The digital audio / video information recording apparatus according to claim 1 , further comprising: Chapter division means for sequentially dividing the data multiplexed by the multiplexing means for each chapter and recording the divided data in the recording means ,
The divided by chapter division means, said decoded by extracting a moving image of a desired range of the beginning of the chapter from the multiplexed data immediately after being recorded in the recording means, the chapter index screen is adjusted to a predetermined size First index screen editing means for combining and recording;
When the can top moving picture of a chapter by a first index screen editing unit are recorded, claims comprising a second index screen editing means for recording in the recording means the recording decoded data is then encoded 3. The recording device for digital audio / video information according to 1 or 2 . 4. The index screen editing unit automatically creates the next chapter index screen when the number of chapters divided by the chapter dividing unit exceeds the number that can be displayed on the one chapter index screen. 4. The recording device for digital audiovisual information according to 4. When the chapter index screen has a plurality of screens, the index screen editing means combines a screen feed / return icon with each chapter index screen on each chapter index screen and edits navigation data for association of each chapter index screen. The digital audio / video information recording apparatus according to claim 5. Index screen encoding means for automatically encoding the chapter index screen data when the index image is recorded in the recording means for all chapters and recording the data in the recording means,
Decoding means for decoding the encoded data of the index screen recorded in the recording means into each of an audio signal and a video signal,
The digital audio / video information recording apparatus according to any one of claims 3 to 6, further comprising: reproducing means for reproducing the audio signal and the video signal decoded by the decoding means. The digital audio / video information recording apparatus according to claim 1, wherein the recording unit is a hard disk drive. 9. The digital audio / video information recording apparatus according to claim 1, further comprising a terminal for outputting the multiplexed data recorded in said recording means to another medium recording apparatus. At least one of audio A / D conversion means for converting an analog audio signal into a digital audio signal and video A / D conversion means for converting an analog video signal into a digital video signal is provided. The digital audio / video information recording apparatus according to claim 1, wherein the digital signal obtained is sent to the encoding unit. At least one of audio D / A conversion means for converting a digital audio signal into an analog audio signal and video D / A conversion means for converting a digital video signal into an analog video signal is provided. 8. The digital audio / video information recording apparatus according to claim 2, wherein the analog signal is sent to said reproducing means. Each of the input digital audio signal and digital video signal is sequentially encoded,
At least, when sequentially multiplexed coded speech encoded data and image encoded data and the search data for every predetermined unit, dummy data as a temporary search data to the search data is undetermined Supply and multiplex ,
The data of this multiplexed predetermined units sequentially recorded for each said predetermined units,
Each time the fixed-unit multiplexed data is generated, the determined temporary search data is extracted from the previously undetermined temporary search data, and the temporary search data is replaced with the determined search data. A method for recording digital audiovisual information that is sequentially replaced with a digital audiovisual information. The multiplexed data is sequentially divided for each chapter,
The divided multiplexed data is sequentially recorded,
13. The digital voice according to claim 12, further comprising a step of extracting and decoding a head still image of each chapter from the recorded multiplexed data, decoding the decoded still image, adjusting the size of the still image to a predetermined size, and synthesizing it on a chapter index screen. How to record video information. The multiplexed data is sequentially divided for each chapter,
The divided multiplexed data is sequentially recorded,
A moving image in the desired range at the head of the chapter is extracted and decoded from the multiplexed data immediately after being divided and recorded, adjusted to a predetermined size, synthesized and recorded on the chapter index screen,
13. The method for recording digital audiovisual information according to claim 12, further comprising the step of encoding and recording the recorded decoded data.

Images