JP2002247506A - Recording device for digital audiovisual information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device for digital audiovisual information which records a television broadcast or audio and video signals provided by other information providing sources while automatically and easily adding various functions to a digital video medium. SOLUTION: This device is equipped with an encoding means 11 which sequentially encodes a digital audio signal and a digital video signal respectively, a multiplexing means 12 which sequentially multiplexes at least the encoded data of the sound and the encoded data of the video encoded by the encoding means and data for retrieval, a recording means 13 which sequentially records the data multiplexed by the multiplexing means, a dummy data supply means 14 which sequentially supplies dummy data as temporary retrieval data when the multiplexing means multiplexes the data for retrieval, and a replacing means 15 which sequentially replaces the temporary retrieval data of the multiplexed data of a unit whose retrieval data in the multiplexed data recorded by the recording means are determined by the data for retrieval.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for recording a video signal and an audio signal on a digital video medium, and more particularly to a recording apparatus for audio / video information capable of automatically executing an authoring process.

[0002]

2. Description of the Related Art A DVD used for home video software such as a movie has a multi-language function for selecting a desired language from a plurality of languages and a video of a desired camera angle from a plurality of different camera angles. Multi-angle function that can be selected, multi-story function that can select video and audio of the desired story from multiple stories, parental lock function that can cut extreme scenes according to viewers such as infants and minors, original There is a multi-aspect function that allows the user to select a wide image according to the type of monitor.

[0003]

(1) Such a DVD
Is provided to the user through an authoring process of recording a signal to be recorded on the disc master and a replication process of mass-producing the master, but the authoring process requires skilled skills for editing the various functions described above. Is done. For this reason, there has been a demand for the development of a simple DVD recorder that automatically records, for example, audio and video signals provided by television broadcasting with the various functions described above.

(2) FIG. 14 shows a data format recorded on a DVD. In the authoring step, the audio digital signal is converted, for example, into a Dolby Digital system (AC-3).
And the video digital signal is coded at a variable rate by MPEG2, and the coded audio data and video data are
Multiplexing is performed in the minimum unit of a separately reproducible image (GOP: Group of pictures) defined in the PEG2 standard. A unit starting with a navigation pack (NVPCK) and including an integer number of GOPs defined by the DVD video standard is called a VOBU (Video Object Unit).
Hereinafter, description will be made assuming that 1 GOP = 1 VOBU. Also, 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 (ie, data relating to the data attribute and control of audio and video data reproduced according to the DVD video standard), and the control data includes reproduction control. Information (PCI: Presentation Control Infor
mation) and data search control information (DSI: Data Searc)
h Information), and the DSI contains data (VOBU / SRI: VOBU) for fast forward and reverse fast reverse playback.
Search Information).

[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 after encoding the VOBU.

Therefore, 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 variable rates, multiplexed, for example, 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 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.

However, in the conventional authoring process, encoded and multiplexed data and navigation pack data are once recorded in a storage device for each title, and then these encoded and multiplexed data and navigation pack data are recorded. However, DVD video cannot be recorded in real time because of the sequential processing of multiplexing and recording.

(3) In a DVD, a still image or a moving image at the head of each chapter in a title is displayed as an index in a list, and by selecting any still image or a moving image, reproduction from a chapter desired by the user is started. Some things that can be done are also known. In the authoring process of such a still image index or a moving image index, after the first process and the second process shown in FIG. 16 are performed, in the third process, for each recorded title, chapter division → generation of a 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.

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 → Processing such as editing of the chapter index screen is sequentially performed, and the resulting data is encoded and recorded in the storage device. Therefore, only a person who is familiar with the DVD video standard can perform the authoring processing and cannot be handled by general users.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to recording digital audio and video information for recording audio and video signals provided from a television broadcast or other information providing source onto a digital video medium while automatically and easily adding various functions. It is intended to provide a device.

(1) Real-time authoring of search information
In order to achieve the above object, according to a first aspect of the present invention, encoding means for sequentially encoding each of a digital audio signal and a digital video signal, and at least the encoding means Multiplexing means for sequentially multiplexing encoded audio encoded data, video encoded data, and search data in fixed units, and recording means for sequentially recording the data multiplexed by the multiplexing means A dummy data supply unit for sequentially supplying dummy data as temporary search data when the search data is multiplexed by the multiplexing unit; and a search data among the multiplexed data recorded in the recording unit. A digital audio / video information recording apparatus comprising: a replacement unit for sequentially replacing the provisional search data of the determined unit of multiplexed data with the determined search data; It is.

Further, each of the digital audio signal and the digital video signal is sequentially encoded, and at least encoded audio encoded data, video encoded data, and dummy data as temporary search data are encoded in fixed units. The multiplexed data is sequentially recorded, and the multiplexed data is sequentially recorded. Of the recorded multiplexed data, the provisional search data of the multiplexed data of the unit in which the search data is determined is sequentially added to the determined search data. A method for recording digital audiovisual information to be replaced is provided.

In the recording apparatus and recording method for digital audio / video information according to the first aspect of the present invention, when the input audio and video signals are recorded as a DVD video stream, dummy data is temporarily added to the search data. Is recorded, and 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.

(2) Real-time still image index
Authoring Process (FIG. 2) In order to achieve the above object, according to a second aspect of the present invention, an encoding unit for sequentially encoding each of a digital audio signal and a digital video signal, and at least the encoding unit Multiplexing means for sequentially multiplexing coded audio coded data and video coded data and search data in fixed units, and chapter dividing means for sequentially dividing the multiplexed data for each chapter Recording means for sequentially recording the multiplexed data divided by the chapter division means, and extracting and decoding a still image at the head of each chapter from the multiplexed data recorded in the recording means, and having a predetermined size. Index screen editing means for adjusting the image data into a chapter index screen, synthesizing it to the chapter index screen, and recording it in the recording means. Location is provided.

Further, each of the digital audio signal and the digital video signal is sequentially encoded, and at least encoded audio encoded data and video encoded data and search data are sequentially multiplexed for every predetermined unit, The multiplexed data is sequentially divided for each chapter, the divided multiplexed data is sequentially recorded, a leading still image of each chapter is extracted from the recorded multiplexed data, decoded, and A recording method of digital audio / video information which is adjusted to a size and synthesized and recorded on a chapter index screen is provided.

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 and decoded.
Since a series of processes such as adjusting to a predetermined size and synthesizing and recording the chapter index screen are automatically executed, DVD video information having a still image index can be easily obtained.

(3) Real-time video index
In order to achieve the above object, according to a third aspect of the present invention, encoding means for sequentially encoding each of a digital audio signal and a digital video signal, and at least the encoding means Multiplexing means for sequentially multiplexing coded audio coded data and video coded data and search data in fixed units, and chapter dividing means for sequentially dividing the multiplexed data for each chapter Recording means for sequentially recording the multiplexed data divided by the chapter division means, and a moving image of a desired range at the head of the chapter from the multiplexed data immediately after division by the chapter division means and recorded on the recording means A first index screen editing means for extracting, decoding, adjusting to a predetermined size, synthesizing and recording the chapter index screen, A second index screen editing unit that, when the first moving image of the chapter is recorded by the first index screen editing unit, encodes the recorded decoded data and records the encoded data in the recording unit; An apparatus for recording video information is provided.

Further, each of the digital audio signal and the digital video signal is sequentially encoded, and at least encoded audio encoded data and video encoded data and search data are sequentially multiplexed for every predetermined unit, 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 the division and recording. A digital audio / video information recording method is provided, which decodes the decoded audio data, adjusts it to a predetermined size, synthesizes and records it on a chapter index screen, and encodes and records the recorded decoded data.

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, and adjusted to a predetermined size. Since a series of processes such as synthesizing and recording a chapter index screen are automatically executed, DVD video information having a moving image index can be easily obtained.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. Device Configuration FIG. 4 is a block diagram showing an embodiment in which the digital audio / video information recording device 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 in television broadcasts and the like on a hard disk while encoding and multiplexing the signals 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.

As shown in FIG. 1, 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.
The data 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 receiving a signal from the Internet, and an input / output terminal of the Ethernet. Terminal, input terminal of USB interface to take in signals from digital video camera, etc., input terminal of SPDIF to take in signals from audio equipment, MPEG2
It is possible to input / output information from input / output terminals of an IEEE 1394 interface which is a high-speed interface for taking in signals from a digital video camera or the like.

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 is sent. And video signals, respectively,
For example, after multiplexing for each GOP, it is recorded in a 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.

The DVD stream data generated by the MPEG2 encoder 104 is recorded via a storage interface 105 on a hard disk drive 106 as recording means 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 stores the data on the address / data bus 1.
13 and the FIFO memory 107 for reproduction.

In the AV server 100 of the present embodiment, the DVD-RAM, D as an external device (front-end drive unit) are added to the storage interface 105.
VD-RW, DVD-R108, CD-R, CD-RW
109 can be connected, and data recorded in the hard disk drive 106 can be recorded on a medium such as a DVD or a CD.

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 a selector 11.
1 to switch the graphic accelerator 112
Sent to

The MPEG2 decoder 110 decodes the DVD stream data into a digital audio signal and a digital video signal, and sends out the decoded data 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, transmitted 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-described graphic accelerator 112, and the MPEG2 decoder 110,
Transfer data.

Of these, the system controller 117
Automatically executes the following authoring process according to the program stored in the flash memory 118.

Real-time authoring of search information
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 embodiment provides search information used for trick play in real time. Author automatically. That is, the data (VOBU / SRI) for the fast forward and reverse fast reverse reproduction described above is embedded in real time during recording.

The upper diagram of FIG. 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.

As shown in the upper part of FIG. 6, the configuration functioning in the process of automatically embedding the search information VOBU / SRI includes an MPEG2 encoder 104 for executing encoding and multiplexing, a buffer for DVD video stream data. SDRAM 104m, data search control information D
Navigation pack map buffer memory 119 that associates SI with dummy data, hard disk drive 106, buffer FIFO memory 105m for writing to and reading from hard disk drive 106, replaced DVD stream data recorded on hard disk drive 106 And a MPEG2 decoder 110 for executing decoding processing.

Specific processing will be described with reference to FIGS. First, the MPEG2 encoder 104
Are respectively encoded at a variable rate by the MPEG2 encoding module, and the encoded audio data and video data are output at regular intervals (in this example, M
It is multiplexed into the minimum unit GOP of an image that can be reproduced independently defined in the PEG2 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 determined at the same time 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.

Concurrently, each time one GOP is encoded, VOBU / SRI information is generated (T2 just before the completion of one GOP in the timing chart of FIG. 6).
Every time the OBU / SRI information is determined, the VOBU / SRI information temporarily embedded in the hard disk drive 106 is sequentially overwritten via the map of the memory 119 (T5 in the timing chart of FIG. 6).

The overwritten and confirmed VOBU.
The GOP in which the SRI information is embedded can be reproduced, forward-fast-forwarded, and reverse-fast-returned even during recording. The temporarily embedded dummy data is
An example of the data format replaced with OBU / SRI is shown by 503 in FIG. This data is the MPEG2 decoder 1
10 and can be viewed on the TV monitor 116 even during recording.

Real-time authoring of still picture index
Ring Processing The AV server 100 of the present embodiment, when encoding and multiplexing audio and video at a variable rate in accordance with the DVD video standard and recording the multiplexed audio and video on the hard disk drive 106, the first still image of each chapter in the title Are displayed in a list on the chapter index screen, and a function for 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 chapter index screen of a still image without performing any operation.

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.

As shown in the upper part of FIG. 8, the configuration that functions in the process of automatically generating the still picture index screen is an MPEG2 encoder 104 that executes encoding and multiplexing processes, a buffer for DVD video stream data. SDRAM 104m, hard disk drive 1
06, buffer FIFO memory 105 for writing to and reading from the hard disk drive 106
m, a graphic accelerator 112 for adjusting the first still image of each chapter recorded on the hard disk drive 106 to an appropriate size, and the hard disk drive 10
6 is a reproduction FIFO memory 107 for reading and reproducing the DVD stream data recorded on the DVD stream 6, and an MPEG2 decoder 110 for executing a decoding process.

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.

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 (In this example, MPEG
2 are multiplexed into the minimum unit GOP of an image that can be reproduced independently defined in the two standards. When multiplexing, DVD
The navigation pack data N conforming to the video standard is generated (as described above, the navigation pack information that is determined at the same time as the encoding of one GOP is completed is embedded, but the undetermined, for example, VOBU / SRI information is DVD video stream data is generated by embedding dummy data n.n + 1, n + 2,. This is recorded on the hard disk drive 106. At the same time, every time one GOP is encoded, VOBU / SRI
Each time the VOBU / SRI information is determined, the VOBU / SR temporarily embedded in the hard disk drive 106 via the map of the memory 119 is generated.
I information is sequentially overwritten. In addition, VOBU is overwritten
-The plurality of GOPs for which the SRI has been determined are automatically divided into chapters at regular intervals, and the hard disk drive 106
To record.

When one title is completed, immediately after that, the D
The head still image of each chapter is read out from the VD video stream data to the FIFO memory 105m, and is transferred to the graphic accelerator 112 via the reproduction FIFO memory 107. As shown in FIG. 9, the head index image of a plurality of chapters is incorporated in the TV monitor as shown in FIG. 9, so that the graphic accelerator is set so that the transferred still 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.

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.

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.

Real-time authoring of video index
In the example described above, the still image is automatically embedded in the index screen, but the leading moving image of each chapter can be embedded in the index screen. AV server 100 of this example
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, the first video of each chapter in the title is listed on the chapter index screen, A function for 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.

FIGS. 10 and 11 schematically show the concept of the authoring process, and the upper diagrams of FIGS. 12 and 13 show the main hardware configuration extracted from the block diagram of FIG.

The structure that functions in the process of automatically generating a moving image index screen is, as shown in the upper diagrams of FIGS. 12 and 13, an MP that executes encoding and multiplexing processes.
The EG2 encoder 104, the SDRAM 104m for buffering DVD video stream data, the hard disk drive 106, the FIFO memory 105m for buffering when writing to and reading from the hard disk drive 106, and the first moving image of each chapter recorded on the hard disk drive 106 to an appropriate size. A graphics accelerator 112 for adjusting the size, a reproduction FIFO memory 107 for reading and reproducing the DVD stream data recorded on the hard disk drive 106, and an MPEG2 decoder 110 for executing a decoding process.

The 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 moving image index generation process.

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 (In this example, MPEG
2 are multiplexed into the minimum unit GOP of an image that can be reproduced independently defined in the two standards. When multiplexing, DVD
The navigation pack data N conforming to the video standard is generated (as described above, the navigation pack information that is determined at the same time as the encoding of one GOP is completed is embedded, but the undetermined, for example, VOBU / SRI information is DVD video stream data is generated by embedding dummy data n.n + 1, n + 2,. This is recorded on the hard disk drive 106. At the same time, every time one GOP is encoded, VOBU / SRI
Each time the VOBU / SRI information is determined, the VOBU / SR temporarily embedded in the hard disk drive 106 via the map of the memory 119 is generated.
I information is sequentially overwritten. In addition, VOBU is overwritten
-The plurality of GOPs for which the SRI has been determined are automatically divided into chapters at regular intervals, and the hard disk drive 106
To record.

Immediately after the recording of one chapter is completed, a moving image in the desired range (for example, 30 seconds) at the beginning of each chapter is selected from the DVD video stream data recorded on the hard disk drive 106 by the FIFO.
The data is read out to the O-memory 105m, transferred to the MPEG2 decoder 110 via the reproduction FIFO memory 107, and is normally reproduced here. 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 a 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.

The chapter index screen, as shown in FIG. 9, incorporates the first moving image of a plurality of chapters into the TV monitor, so that the transferred moving image data has a graphic size corresponding to one chapter index screen. The image is reduced by the accelerator 112 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.

The combined index screen data is transferred to the hard disk drive 106 for each frame.
To record. The data recorded here is in a digital video format.

Processing of all chapters is completed, that is, 1
Immediately after the completion of one title, the first moving image of each chapter based on the digital video data recorded on the hard disk drive 106 is stored in the FIFO memory 1.
05m, and this is read out from the FIFO memory 107 for reproduction.
Is transferred to the graphic accelerator 112 via the. At this time, when the index screen extends over a plurality of screens, a screen transition navigation command is embedded in the navigation pack data of one index screen, and at the same time, a screen transition icon is combined with the previous index screen.

Then, the index screen data is set to M
The data is sent to the PEG2 encoder 104, where it is encoded in the DVD video format and then recorded on the hard disk drive 106.

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.

In the example described above, the combined index screen data is once recorded in the digital video format on 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. Convert, but this is an MPEG
2 encoder 104 is in operation, and therefore, if another MPEG2 encoder is added, it can be directly stored in the digital video format without recording.
It can be converted to the VD video format in real time. This is also within the scope of the present invention.

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 digital audio / video information recording apparatus 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 for explaining search information real-time authoring processing 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 illustrating 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 a real-time authoring process 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]

 DESCRIPTION OF SYMBOLS 11 ... Encoding means 12 ... Multiplexing means 13 ... Recording means 14 ... Dummy data supply means 15 ... Replacement means

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/781 H04N 5/781 510F 5/85 510L 5/92 5/92 HF Term (Reference) 5C052 AA02 AB03 AB04 AC08 CC06 CC11 DD04 DD06 EE03 5C053 FA07 FA14 FA24 FA27 GB06 GB11 GB38 HA29 JA01 LA06 5D044 AB05 AB07 BC01 BC04 CC04 DE17 DE48 EF05 FG18 GK08 5D077 AA22 CA02 DC22 DE02

Claims (14)

[Claims] 1. Encoding means for sequentially encoding each of a digital audio signal and a digital video signal, and at least audio encoded data, video encoded data, and search data encoded by the encoding means. Multiplexing means for sequentially multiplexing the data for each fixed unit, recording means for sequentially recording the data multiplexed by the multiplexing means, and dummy data when the search data is multiplexed by the multiplexing means. Dummy data supply means for sequentially supplying the data as temporary search data, and temporary search data of the multiplexed data of the unit in which the search data is determined among the multiplexed data recorded in the recording means, and the determined search data And a replacing means for sequentially replacing the digital audio and video information. 2. A decoding means for decoding the multiplexed data processed by the replacement means into an audio signal and a video signal, respectively, and reproducing the audio signal and the video signal decoded by the decoding means. The digital audio / video information recording apparatus according to claim 1, further comprising: a reproducing unit. 3. Encoding means for sequentially encoding each of a digital audio signal and a digital video signal; and at least encoded audio data, encoded video data, and search data encoded by the encoding means. Multiplexing means for sequentially multiplexing the multiplexed data for each fixed unit, chapter dividing means for sequentially dividing the multiplexed data for each chapter, and recording means for sequentially recording the multiplexed data divided by the chapter dividing means. An index screen editing for extracting and decoding a still image at the head 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; Means for recording digital audiovisual information. 4. Encoding means for sequentially encoding each of a digital audio signal and a digital video signal; and at least encoded audio data, encoded video data, and search data encoded by the encoding means. Multiplexing means for sequentially multiplexing the multiplexed data for each fixed unit, chapter dividing means for sequentially dividing the multiplexed data for each chapter, and recording means for sequentially recording the multiplexed data divided by the chapter dividing means. A moving image in a desired range at the head of the chapter is extracted and decoded from the multiplexed data immediately after being recorded by the chapter dividing unit and recorded in the recording unit, and the extracted moving image is adjusted to a predetermined size and synthesized on a chapter index screen. First to record
Index 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 comprising: 5. The index screen editing means automatically creates a next chapter index screen when the number of chapters divided by the chapter dividing means exceeds the number which can be displayed on the one chapter index screen. The digital audio / video information recording apparatus according to claim 3 or 4, wherein: 6. The index screen editing means, when the chapter index screen is a plurality of screens, combines a screen feed / return icon with each chapter index screen on each chapter index screen and associates each chapter index screen with each other. 6. The digital audio / video information recording apparatus according to claim 5, wherein the navigation data is edited. 7. Index screen encoding means for automatically encoding the chapter index screen data when all the index images for all chapters are recorded in the recording means and recording the data in the recording means, and recording the index image data in the recording means. Decoding means for decoding the encoded data of the index screen into an audio signal and a video signal, respectively; andreproducing means for reproducing the audio signal and the video signal decoded by the decoding means. Claim 3-
7. The recording device for digital audiovisual information according to any one of 6. 8. The recording apparatus for digital audio / video information according to claim 1, wherein said recording apparatus is a hard disk drive. 9. The digital audio / video information recording apparatus according to claim 1, further comprising a terminal for outputting multiplexed data recorded in said recording apparatus to another medium recording apparatus. 10. An image processing apparatus comprising: at least one of an audio A / D converter for converting an analog audio signal into a digital audio signal; and a video A / D converter for converting an analog video signal into a digital video signal. The digital audio / video information recording apparatus according to claim 1, wherein the digital signal converted by the D conversion unit is sent to the encoding unit. 11. An apparatus according to claim 1, further comprising at least one of an audio D / A converter for converting a digital audio signal into an analog audio signal and a video D / A converter for converting a digital video signal into an analog video signal. 8. The digital audio / video information recording apparatus according to claim 2, wherein the analog signal converted by the A conversion means is sent to the reproduction means. 12. A digital audio signal and a digital video signal are sequentially encoded, and at least encoded audio encoded data, video encoded data, and dummy data as temporary search data are encoded for each fixed unit. The multiplexed data is sequentially recorded, and the multiplexed data is sequentially recorded. Of the recorded multiplexed data, the temporary search data of the multiplexed data of the unit in which the search data is determined is sequentially added to the determined search data. A method of recording digital audiovisual information to be replaced. 13. A digital audio signal and a digital video signal are sequentially encoded, and at least encoded audio encoded data and video encoded data and search data are sequentially multiplexed for each predetermined unit. The multiplexed data is sequentially divided for each chapter, the divided multiplexed data is sequentially recorded, a leading still image of each chapter is extracted from the recorded multiplexed data, decoded, and A method for recording digital audiovisual information that is adjusted to a size and synthesized and recorded on a chapter index screen. 14. A digital audio signal and a digital video signal are sequentially encoded, and at least encoded audio encoded data and video encoded data and search data are sequentially multiplexed for each fixed unit. 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 decrypt,
A method for recording digital audiovisual information in which a picture is adjusted to a predetermined size, synthesized and recorded on a chapter index screen, and the recorded decoded data is encoded and recorded.