JP2010192096A - Device for recording digital sound image information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an HDD-equipped DVD recorder to which arbitrary information can be input in accordance with each title and a stream. <P>SOLUTION: The recorder includes: an encoding means 11 sequentially encoding each of digital sound signals and digital image signals input from a first external apparatus; a multiplexing means 12 sequentially multiplexing at least encoded sound and image data encoded by the encoding means and search data in predetermined units; first and second recording means 14 and 15 recording the data multiplexed by the multiplexing means into a first information recording medium 14m and a second information recording medium 15m, respectively; an input means 13 for inputting user information from a second external apparatus; and a control means 18 recording the user information input by the input means into the first and second recording mediums by the first and second recording means, respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a HDD-equipped DVD recording apparatus that records a video signal and an audio signal on a DVD medium or a hard disk medium.

  In recent years, DVD (Digital Versatile Disc) recording / playback apparatuses are known in which both a hard disk drive (HDD) and a DVD drive are provided. Video signals and audio signals input from an external device such as a television set are known. Can be recorded on either a hard disk medium or a DVD medium, and information recorded on one medium can be dubbed on the other medium (hereinafter referred to as this type of apparatus). Is called an HDD-mounted DVD recording apparatus (Patent Document 1).

  By the way, although the conventional DVD recording apparatus has a function of inputting or editing a title name, it cannot add arbitrary information corresponding to each title or stream.

JP 2002-152658 A

  An object of the present invention is to provide a HDD-equipped DVD recording apparatus capable of inputting arbitrary information corresponding to each title and stream.

In order to achieve the above object, according to the present invention, encoding means for sequentially encoding each of a digital audio signal and a digital video signal input from a first external device;
Multiplexing means for sequentially multiplexing at least a predetermined unit of audio encoded data and video encoded data and search data encoded by at least the encoding means;
A first recording means for recording data multiplexed by the multiplexing means on a first information recording medium and a second recording means for recording on a second information recording medium;
Input means for inputting user information from the second external device;
Control means for causing user information input to the input means to be recorded on the first information recording medium by the first recording means and to be recorded on the second information recording medium by the second recording means; , A digital audio / video information recording apparatus is provided.

  According to the present invention, user title information (information related to the titles of data recorded on the first and second information recording media) and user stream information (data recorded on the first and second information recording media) The user information such as information corresponding to the time axis of the stream or information corresponding to an arbitrary point of the stream is input from the second external device to the input means, and this user information is input to the first information recording medium or the second information Recorded on the information recording medium. As a result, user information that can be arbitrarily set by the user in addition to audio information and video information can be recorded in a format such as text on the first information recording medium and the second information recording medium. The user information corresponding to can be reproduced.

It is a block diagram which shows 1st and 2nd embodiment of the digital audio video information recording apparatus of this invention. It is a flowchart which shows the process sequence of the digital audio video information recording apparatus of this invention. It is a timing chart which shows the processing timing of the digital audio video information recording device of this invention. It is a timing chart which shows the other processing timing of the digital audio video information recording device of this invention. It is a figure which shows the recording flag which concerns on 2nd Embodiment of the digital audio video information recording device of this invention. It is a block diagram which shows 3rd Embodiment of the digital audio video information recording device of this invention. It is a figure which shows an example of the data format for recording the user stream information which concerns on 3rd Embodiment of the digital audio video information recording device of this invention. It is a figure which shows an example of the data format of the work area of the hard-disk medium based on 3rd Embodiment of the digital audio video information recording device of this invention. It is a figure for demonstrating the writing of the user title information which concerns on 3rd Embodiment of the digital audio video information recording device of this invention, reading, and a deletion process. It is a figure for demonstrating the writing of the user stream information which concerns on 3rd Embodiment of the digital audio video information recording device of this invention, reading, and a deletion process. It is a figure which shows an example of the data format of the DVD medium which concerns on 3rd Embodiment of the digital audio video information recording device of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<< First Embodiment >>
FIG. 1 is a block diagram showing an embodiment of a digital audio / video information recording apparatus (hereinafter also simply referred to as a DVD recording apparatus) of the present invention. The DVD recording apparatus 100 of the present embodiment records and reproduces audio signals and video signals provided by television broadcasting or the like on the hard disk medium 14m and the DVD medium 15m while encoding and multiplexing in real time. At this time, when the DVD medium 15m is set in the DVD drive 15, recording to the hard disk medium 14m is started, and when preparation for recording of the DVD medium 15m is completed, dubbing from the hard disk medium 14m to the DVD medium 15m is performed in real time. However, the supply source of audio information and video signals is not limited to television broadcasting, and information from any supply source such as video camera, digital broadcasting, and information communication through telephone lines can be captured. .

The hard disk medium 14m according to the present example corresponds to the first information recording medium of the present invention, the DVD medium 15m according to the present example corresponds to the second information recording medium of the present invention, and the hard disk drive according to the present example. 14 corresponds to the first recording means of the present invention, and the DVD drive 15 according to this example corresponds to the second recording means of the present invention.

The encoding means 11 shown in the figure encodes a digital audio signal and a digital video signal transmitted from an external device such as a television receiver via a data selector or the like (not shown). The audio signal and the video signal are sent to the next multiplexing means 12 and multiplexed by the multiplexing means 12 for each GOP (Group of Pictures), for example. At the time of multiplexing, navigation pack data compliant with the DVD video standard is also generated and recorded as a DVD video stream on the hard disk medium 14m. Note that the encoding unit 11 and the multiplexing unit 12 can be embodied using electronic components such as an MPEG2 encoder processor and SDRAM.

  The DVD stream data generated by the multiplexing means 12 calibrated by an MPEG2 encoder or the like is recorded on the hard disk medium 14m via the storage interface 13 by the hard disk drive 14 which is the first recording means of the present invention. The storage interface 13 records data on the hard disk medium 14m of the hard disk drive 14 and reads the data recorded on the hard disk medium 14m to read the DVD medium 15m of the DVD drive 15 and the decoding means 16 for reproducing them. To send. Further, the DVD stream data generated by the multiplexing means 12 may be recorded on the DVD medium 15m via the storage interface 13 by the DVD drive 15 which is the second recording means of the present invention.

  When data recorded on the hard disk medium 14m or the DVD medium 15m is reproduced, it is temporarily stored in a reproduction FIFO memory (not shown) via the storage interface 13, and this data is constituted by an MPEG2 decoder processor or the like. Sent to the decryption means 16.

  In the decoding means 16 constituted by an MPEG2 decoder processor or the like, the DVD stream data is decoded into a digital audio signal and a digital video signal, and these digital audio signal and digital video signal are further converted by a digital / analog converter as necessary. The analog audio signal and the analog video signal are decoded and sent to the reproduction means 17 constituted by a TV monitor or the like, where it is reproduced.

When the control means 18 according to the present embodiment detects that the DVD medium 15m is loaded in the DVD drive 15, the data multiplexed by the multiplexing means 12 is sequentially recorded on the hard disk medium 14m by the hard disk drive 14 every predetermined unit. Let Further, during the recording process for each fixed unit, the data previously recorded on the hard disk medium 14 m is read by the hard disk drive 14 and recorded on the DVD medium 15 m by the DVD drive 15. This processing is executed by the storage interface 13.

Next, the processing procedure in the control means 18 will be described with reference to the flowchart of FIG. 2 and the timing chart of FIG.

First, when the main switch of the DVD recording apparatus 100 is input, after the initialization (step S1), a self-diagnosis is executed (step S2). If the self-diagnosis result is an error, an error is displayed as it is. Then, this routine is finished (step S3 → S4). If no abnormality is confirmed in the self-diagnosis result in step S3, the process proceeds to step S5, and the presence or absence of recovery is confirmed. As a result, if recovery is necessary, the process proceeds to step S6, where it is confirmed whether the DVD medium 15m is inserted in the DVD drive 15, and if it is inserted, the recovery process is executed in step S7, and then step Proceed to S8. This restoration process will be described in detail in the second embodiment. If the DVD medium 15m is not inserted into the DVD drive 15 in step S6, the process proceeds to step S8 without performing recovery processing.

When the above processing is completed, the tray of the DVD drive 15 is opened (step S8). When the DVD medium 15m is inserted (step S9), the tray is closed (step S10). Thereafter, recording of audio signals and video signals from an external device such as a television receiver in the hard disk medium 14m is permitted. This process will be described later.

Next, it is confirmed whether or not the DVD medium 15m is physically inserted in the DVD drive 15 (step S11). If the DVD medium 15m is not confirmed, this routine is ended (step S12). If the DVD medium 15m is confirmed in step S11, the process proceeds to step S13 to confirm the type of the DVD medium 15m. If the DVD medium is not writable, an error is displayed and this routine is terminated (step S23). .

If the DVD medium 15m is a writable DVD medium such as DVD + RW in step S13, it is confirmed whether the user command to the DVD recording apparatus 100 is “record” or “play” (step S14). ), If it is a regeneration command, the process proceeds to step S15.

In step S15, it is confirmed whether the reproduction command drive is the hard disk drive 14 or the DVD drive 15, and if it is the hard disk drive 14, the contents of the hard disk medium 14m are reproduced (step S20), and then the routine is terminated (step S21). . On the other hand, if the reproduction command drive is the DVD drive 15 in step S15, the content of the DVD medium 15m is reproduced (step S18), and then the routine is terminated (step S19).

Returning to step S14, when the user command to the DVD recording apparatus 100 is "recording", the process proceeds to step S22 to check the remaining recording capacity of the DVD medium 15m, and when there is no remaining recording capacity, an error is displayed. The routine ends (step S23). If there is a recording remaining amount in step S22, it is checked in step S24 if the DVD medium 15m has been formatted.

If the DVD medium 15m is unformatted in step S24, the process proceeds to step S25 to execute the formatting. If the DVD medium 15m has been formatted, the process proceeds to step S26 to read the recorded table, and the test is performed in the next step S27. Write (OPC) is executed.

When the user command in step S14 is “record”, the process from step S9 in which the DVD medium 15m is inserted to the format in step S25 or the trial writing in step S27 is executed, thereby recording on the DVD medium 15m. However, the audio signal and the video signal input from the external device cannot be recorded on the DVD medium 15m between step S9 and step S25 or S27.

For this reason, as described above, when the DVD medium 15m is inserted in step S9 and the tray is closed in step S10, audio signals and video signals from an external device such as a television receiver are thereafter transmitted to the hard disk medium 14m. Allow recording to. When a “record on DVD medium” command is input from the user to the DVD recording apparatus 100, recording to the hard disk medium 14m is started even before preparation for recording on the DVD medium 15m is completed. .

This process will be described with reference to the timing chart of FIG.

First, in the initial phase t1 shown in the figure, the audio signal and the video signal from the external device are encoded and multiplexed by the encoding means 11 and the multiplexing means 12 shown in FIG. Recording in real time on the hard disk medium 14m. The recording on the hard disk medium 14m is executed at a predetermined interval, for example, every 3 seconds for 0.5 seconds (for example, 3.75 MB).

When the process of step S25 or S27 in FIG. 2 is completed and recording on the DVD medium 15m is ready, the time between the writing process to the hard disk medium 14m, that is, 2.5 seconds (3-second cycle-0.5). For example, 0.5 second of the second) is read, and the data that has been recorded on the hard disk medium 14m is read, and for example, 1.7 seconds of the remaining time is used to read the currently read data to the DVD medium 15m. To record. This processing is performed by sending a read command from the control means 18 shown in FIG. 1 to the hard disk drive 14 and sending a write command to the DVD drive 15 via the storage interface 13.

The above-described series of processes of writing from the external device to the hard disk medium 14m, reading data from the hard disk medium 14m, and writing data to the DVD medium 15m is repeatedly executed using a period of 3 seconds.

As shown in FIG. 3, when the input from the external device is completed before the dubbing of all the data written to the hard disk medium 14m is completed, the writing process from the external device to the hard disk medium 14m is performed. Since the capacity of subsequent data reading processing from the hard disk medium and data writing processing to the DVD medium 15m is increased from 5 MB to 6 MB, for example, the subsequent dubbing time is shortened. Will be.

When dubbing to the DVD medium 15m is started, the data recorded on the DVD medium 15m can be reproduced (so-called chasing reproduction). In this case, the data reading process from the hard disk medium 14m and the DVD are performed. In addition to the process of writing to the medium 15m, the process of reading data from the DVD medium 15m is added, so these processing times are assigned again within a period of 3 seconds. In the example shown in the figure, the data reading process from the hard disk medium 14m is 0.2 seconds (2 MB), the data writing process to the DVD medium 15m is 1.2 seconds (2 MB), and the data reading process from the DVD medium 15m is performed. Is 1.2 seconds (1.875 MB × 2).

The writing process from the external device to the hard disk medium 14m is executed with a capacity of, for example, 3.75 MB, while the dubbing process from the hard disk medium 14m to the DVD medium 15m is executed with a capacity of, for example, 5 MB larger than this. As shown in FIG. 4, the dubbing process may catch up with the writing process from the external apparatus to the hard disk medium 14m before the input from the external apparatus is completed. In this case, the writing process to the hard disk medium 14m may be continued as it is, or the writing process directly from the external device to the hard disk medium 14m as shown in FIG. Also good.

The above processes are the stream transfer, recording stop, and remaining stream transfer processes in steps S28 to S30 shown in FIG. As described above, even before the recording preparation of the DVD medium 15m is completed, the audio signal and the video signal from the external device are once recorded on the hard disk medium 14m, and the DVD medium is sequentially used by using the time between the recording processes. Thus, all data can be recorded on the DVD medium. Further, since all data input from the external device is recorded on the hard disk medium 14m, even when dubbing to the DVD medium 15m fails for some reason, the data can be read and recorded again. it can.

When the input from the external device is finished, the dubbing process from the hard disk medium 14m to the DVD medium 15m is finished, and the user inputs an instruction to open the tray of the DVD drive 15 (step S31), the current recording is performed at that timing. The table and menu of the stream thus recorded are recorded in the table area of the DVD medium 15m (step S32), and finally the tray is opened so that the DVD medium 15m can be taken out (step S33). The table information and menu information can be written even when the DVD medium 15m is not taken out from the DVD drive 15. However, when the next recording is continuously executed, the table information and the like can be written. Can be used for the recording process.

Although not shown in the flowchart of FIG. 2, recording of the hard disk medium 14m and / or the DVD medium 15m is performed while the audio signal and the video signal from the external device are being recorded on the hard disk medium 14m and the DVD medium 15m. If the amount runs out or an error occurs in any of the drives 14 and 15 and the media 14m and 15m, the session of the media is closed and the recording is ended, but recording on the other media is continued. Do it. This enables later dubbing from one to the other.

<< Second Embodiment >>
The DVD recording apparatus 100 according to the second embodiment of the present invention basically records an audio signal and a video signal from an external device on the hard disk medium 14m, similarly to the DVD recording apparatus 100 according to the first embodiment described above. The time between the recording processes is used to perform the dubbing process to the DVD medium 15m. At the start of recording, the recording to the hard disk medium only, the dubbing from the hard disk medium to the DVD medium, In each phase at the time of closing the session, when the power of the DVD recording device is shut off, the next time the power is supplied, the process includes the process of spreading the recording process after the state of recording so far (step S7 in FIG. 2). reference).

That is, in the block diagram shown in FIG. 1, the control means 18 according to the present example sequentially records the data multiplexed by the multiplexing means 12 on the hard disk medium 14m by the hard disk drive 14 for each fixed unit. A DVD recording apparatus 100 that reads data recorded on the hard disk medium 14m by the hard disk drive 14 and records the data on the DVD medium by the DVD drive 15 during each recording process, and its recording state, specifically, the start of recording When recording on the hard disk medium only, when recording from the hard disk medium to the DVD medium, or when the session is closed, the recording state is recorded on the hard disk medium 14m. Recorded on hard disk medium 14m It was based on the recorded state to restore the recording to the DVD media 15m.

Specifically, in order to monitor the timing when the DVD recording apparatus 100 is powered off, a recording status flag is held in the hard disk medium 14m. FIG. 5 shows an example of a recording flag. In this example, 11 states of status flags 0 to 10 can be identified.

As described above, when each recording status flag is held in the hard disk medium 14m, even if an abnormality such as a power interruption occurs during dubbing, the recording status flag held in the hard disk medium 14m is restored. The process can be resumed from the middle of the interrupted process. This eliminates the need to restart dubbing from the beginning in the event of such an abnormality.

The status flag stored in the hard disk medium 14m includes not only the recording process from the above-described external device but also the editing process for the DVD medium 15m such as title deletion, title name editing, medium name editing, title protection setting, etc. Can also be done. In this case, a video manager (VMG = Video Manager; a table having information on the entire medium defined in the DVD-Video standard), a video title set (VTS = Video Title Set; a title defined in the DVD-Video standard and the + VR standard) Table information such as video recording manager information (VRMI = Video Recording Manager Information; a table having information related to titles defined in the VR standard) is expanded in the work area of the hard disk medium 14m, and the edited result is displayed. In addition to being held in the hard disk medium 14m, when the information is written to the hard disk work area, the update state is held in the hard disk work area operation flag. When the DVD recording apparatus 100 is turned off and turned on again, the update status of the table information is detected by the hard disk work area operation flag, and it is determined whether or not to restore the editing process. The DVD medium information up to the point before the power interruption occurs is restored.

<< Third Embodiment >>
FIG. 6 is a block diagram showing a third embodiment of the DVD recording apparatus of the present invention. The DVD recording apparatus 100 of the present embodiment records and reproduces audio signals and video signals provided by television broadcasting or the like on the hard disk medium 14m and the DVD medium 15m while encoding and multiplexing in real time. When recording, user information that can be freely input by the user is recorded in association with the multiplexed data, and when this is reproduced, the user information can also be reproduced. However, the supply source of audio information and video signals is not limited to television broadcasting, and information from any supply source such as video camera, digital broadcasting, and information communication through telephone lines can be captured. .

  Incidentally, a unit defined by the DVD video standard and including an integer number of GOPs (Group of pictures; the minimum unit of images that can be played independently) defined by the MPEG2 standard is a VOBU (Video Object Unit). In this example, a plurality of VOBUs are assembled to form one chapter (for example, one unitary scene), and a plurality of chapters are combined to form one title (for example, one movie). User information can be recorded in association with each title, or can be recorded in association with VOBU units or chapter units.

  The configuration of the encoding means 11, multiplexing means 12, storage interface 13, hard disk drive 14, DVD drive 15, decoding means 16 and playback means 17 shown in FIG. 6 is the same as that in the first embodiment described above. Detailed description thereof will be omitted.

  In the DVD recording apparatus 100 according to this example, the second external device 19 is connected to the storage interface 13 by, for example, an RS232C serial interface, and desired user information is input to the DVD recording apparatus 100.

  The user information in this example includes user title information and user stream information.

  The user title information is individual information associated with the title recorded on the hard disk medium 14m or the DVD medium 15m, and includes title name, ID, title-specific text information, and the like.

  The user stream information is information that changes according to the time axis of the data stream or information that corresponds to an arbitrary point of the stream, and is individual information associated with a chapter or VOBU, such as the name of a chapter or VOBU, ID or their unique text information.

  The user title information need not be recorded in association with the time axis of the data stream, but the user stream information must be recorded in association with the VOBU address of the stream. FIG. 7 is a diagram showing an example of a data format for recording user stream information. For a title composed of a plurality of VOBU data (for example, 512 bytes), the target user stream information is the VOBU start address of the corresponding VOBU. Along with (for example, 256 bytes).

The control means 18 of this example records such user information input from the second external device 19 once on the hard disk medium 14m, opens the tray of the DVD drive 15 and takes out the DVD medium 15m. Is recorded on the DVD medium 15m.

FIG. 8 is a diagram showing an example of the data format of the work area of the hard disk medium 14m. Here, the work area update area (for example, 512 bytes) and the video manager (VMG = Video Manager; defined in the DVD-Video standard) are shown. A table having information on the whole medium), a video title set (VTS = Video Title Set; a table having information on titles defined in the DVD-Video standard and the + VR standard), video recording manager information (VRMI = Video Recording Manager Information; User title information and user stream information are developed together with table information such as a table having information on a title defined in the + VR standard).

Note that the video manager VMG, the video title set VTS, and the video recording manager information VRMI are read from the DVD medium inserted in the DVD drive 15 and held in the storage interface as they are.

The work area for user title information is further divided into a plurality of user title areas (here, 49 areas), and a work area for information pointers is also provided. The information pointer further includes a user title information pointer for each title and an operation flag for the user title information area.

This information pointer is used when writing / reading / deleting user title information and user stream information.

For example, when the user title information requested to be written to title # 2 in FIG. 9 is written, first, the user title information operation flag is set to 1 (during user title information operation), and the information corresponding to title # 2 requested to be written. After writing the pointer to the pointer and writing the user title information from the designated pointer position, the user title information operation flag is set to 2 (user title information operation complete). Then, when the tray of the DVD drive 15 is opened, the user title information is written to the DVD medium 15m, the user title information operation flag is set to 0 (the state where it is expanded from the DVD medium), and only the information pointer is set to the DVD medium 15m. Write to.

In addition, when the user title information written in the title # 2 in FIG. 9 is read, the information pointer corresponding to the title # 2 requested to be read is read, and the user title information is read from the designated pointer position.

When title # 2 recorded in FIG. 9 is deleted, the work area operation flag is set to 1 (work area is being updated), and the pointer after the deleted title # 2 is moved forward by one title ( After writing 0xFF (no user title information) in the information pointer of the remaining title # 49 due to deletion, the work area operation flag is set to 2 (work area update complete). Then, when the tray of the DVD drive 15 is opened, the user title information is written to the DVD medium 15m, the user title information operation flag is set to 0 (the state where it is expanded from the DVD medium), and only the information pointer is set to the DVD medium 15m. Write to. When writing to the DVD medium 15m is completed, the work area operation flag is set to 0 (a state where the work area is unfolded from the DVD medium). As a result, the user title information is automatically deleted in conjunction with the deletion operation of title # 2.

FIG. 10 is a diagram showing the processing procedure of the information pointer when writing / reading / deleting user stream information. In the figure, when writing the requested user stream information at a predetermined position of title # 2, The pointer is written to the user stream information pointer corresponding to the requested title # 2, and the user stream information is written from the designated pointer position. Then, the next title user stream information pointer is written based on the size of the written user stream information.

In addition, when the user stream information written in the title # 2 in FIG. 10 is read, the user stream information pointer corresponding to the title # 2 requested to be read is read, and the user stream information is read from the designated pointer position.

When the title # 2 recorded in FIG. 10 is deleted, the work area operation flag is set to 1 (work area is being updated), and the pointer after the deleted title # 2 is moved forward by one title ( As shown in the right figure of FIG. 9, 0xFFFFFFFF (no user stream information) is written in the information pointer of the title # 49 remaining after deletion. When the final title is deleted, the user stream information pointer of the final title is written into the next title user stream information pointer. Then, the work area operation flag is set to 2 (work area update completed), the user stream information is written to the DVD medium 15m when the tray of the DVD drive 15 is opened, and the writing to the DVD medium 15m is completed, the work area operation flag is set Set to 0 (the state of being expanded from the DVD medium). As a result, the user stream information is automatically deleted in conjunction with the deletion operation of title # 2.

FIG. 11 is a diagram showing an example of the data format of the DVD medium 15m, and a recording area for user information such as user title information and user stream information is secured at the head of the stream area. By using a stream area without using a table area (VMG, VTS, VRMI) as a recording area for user information, reproduction compatibility and recording compatibility can be achieved even when reproduction or additional recording is performed using another reproduction apparatus. Sex can be secured. Since the head of the stream area is used as the user information recording area, the actual head of the stream area, that is, the position of 554A in the figure is recorded in the table recorded in the table area.

The embodiment described above 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 embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 100 ... DVD recording apparatus 11 ... Encoding means 12 ... Multiplexing means 13 ... Storage interface 14 ... Hard disk drive (1st recording means)
14m ... Hard disk medium (first recording medium)
15 ... DVD drive (second recording means)
15m ... DVD medium (second recording medium)
16: Decoding means 17 ... Reproducing means 18 ... Control means 19 ... Second external device

Claims (6)

Encoding means for sequentially encoding each of the digital audio signal and the digital video signal input from the first external device;
Multiplexing means for sequentially multiplexing at least a predetermined unit of audio encoded data and video encoded data and search data encoded by at least the encoding means;
A first recording means for recording data multiplexed by the multiplexing means on a first information recording medium and a second recording means for recording on a second information recording medium;
Input means for inputting user information from the second external device;
Control means for causing user information input to the input means to be recorded on the first information recording medium by the first recording means and to be recorded on the second information recording medium by the second recording means; A digital audio / video information recording apparatus comprising:   The user information includes user title information related to the title of data recorded on the first and second information recording media, and a time axis of a stream of data recorded on the first and second information recording media. The digital audio / video information recording apparatus according to claim 1, wherein the apparatus includes user stream information that changes in accordance with the stream or corresponds to an arbitrary point of the stream.   3. The digital audio / video information according to claim 1, wherein the control unit secures a user information recording area at the head of a stream area in the recording format of the second information recording medium, and records the user information therein. Recording device.   The control means rewrites or moves pointer data of the user information when a title corresponding to the user information is deleted from the first information recording medium or the second information recording medium. 4. The digital audio / video information recording apparatus according to any one of 3). Decoding means for decoding multiplexed data recorded on the first information recording medium or the second information recording medium into an audio signal and a video signal,
The audio signal and video signal decoded by the decoding means, and reproducing means for reproducing the user information recorded on the first information recording medium or the second information recording medium, further comprising: The recording apparatus of the digital audio | video information in any one of -4.   6. The digital audio / video information recording apparatus according to claim 1, wherein the first information recording medium is a hard disk medium, and the second information recording medium is a DVD medium.