JP2003109300A - Method and apparatus for video recording and reproduction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate information copying and enhance a defect resulting from a difference of a recording capacity when information is recorded to a recording medium with a large storage capacity and e.g. copied to a recording medium with a small recording capacity. SOLUTION: In the case of recording video information and management information required to manage and reproduce onto a hard disk, the management information including entry point information of the video information is recorded (S104), an the entry point is generated in the unit of the recording capacity (4.7 GB) of a second medium (DVD-RAM).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention manages the amount of information recorded on a recording medium, and can record high-definition images without excess or deficiency of data when moving or copying to another medium. The present invention relates to a video recording / reproducing device. It is also effective in managing the amount of information for a double-sided recordable disc. As a device to which the present invention is applied,
For example, there is a device that can handle a hard disk built in the device and a medium such as a DVD (digital versatile disk) that is detachable and rewritable in the device.

[0002]

2. Description of the Related Art In recent years, as an image compression technology, MPEG2 (Moving Image Coding Expert Gro
The DVD standard in which the up) method is adopted has been proposed. According to the MPEG2 system layer, this standard supports the moving image compression method MPEG2 method and the audio compression method AC3.
It supports audio compression and MPEG audio compression. It also supports the linear PCM method. Furthermore, it is possible to handle sub-picture data in which bitmap data is run-length compressed for subtitles such as movies and karaoke.

Further, in this standard, control data (navi pack) is added so that special reproduction such as fast forward and reverse forward can be performed. In addition, this standard allows a computer to read the data on the disc.
ISO9660 and Micro Universal Disc
The format (UDF) standard is supported.

As the standard of the medium itself, DV is
Following the standard for DVD-ROM, which is a D-video medium, the standard for DVD-RAM (storage capacity of 4.7 GB) has also been completed. DVD-RAM, together with its drive, is used as a computer peripheral device and storage medium. It is becoming popular.

Further, at present, a real-time recording (RTR) -DVD standard, which is a standard for realizing a system capable of recording and reproducing video information in real time using a DVD-RAM, has been completed. This standard is based on the currently released DVD-V
It is considered based on the video standard. Furthermore, this RT
A file system compatible with R-DVD has also been standardized.

On the other hand, a recording / reproducing apparatus incorporating a large-capacity hard disk device (HDD) has been commercialized and used for recording / reproducing broadcast signals.

With the development of the image compression technique as described above,
Information storage media (DVD-RAM, hard disk,
A video recording / reproducing device for recording / reproducing a semiconductor memory or the like) in real time for video information such as a broadcast signal has been developed and commercialized.

Various information recording media have been developed. DVD-RAM shown above
In addition, multiple types have been standardized and commercialized according to the usage form of the user. In particular, some types of capacity have already been commercialized. For example, outline 12
The most commonly used DVD-RAM disc is the one with cm, single-sided recording, and capacity of 4.7 GB. In addition, a 9.4 GB disc product, which doubles the capacity, has already been commercialized as a type in which two discs such as the above-mentioned disc are bonded together.

[0009]

As described above, media having different storage capacities are mixed, and there is a demand for an apparatus that can effectively use these media.

Therefore, according to the present invention, when information is recorded on a recording medium having a large storage capacity and, for example, information is copied to a recording medium having a small recording capacity, the information can be easily copied and the recording capacity is different. It is an object of the present invention to provide a video recording / reproducing device capable of improving a defect.

[0011]

According to the present invention, in order to achieve the above object, when information is recorded on a first medium having a first recording capacity A, at least video information and this information are recorded as the information. The management information necessary for management and reproduction is recorded by including the entry point information of the video information in the management information, and the entry point is the second recording which is the recording capacity of the second medium. Capacity B
It is generated and set in units of (<A).

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present embodiment will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of a video recording / reproducing apparatus to which the present invention is applied.

The video recording / reproducing apparatus shown in this embodiment can handle both a DVD-RAM and a hard disk as a recording medium. Figure 1 shows a DVD-RAM
It has a drive device 8 and a hard disk drive device 9. The DVD-RAM drive device 8 can read and write a DVD-RAM which is an optical disk medium, and can access it corresponding to some types of DVD-RAM. The hard disk drive 9 contains a hard disk medium as a recording medium.

The drive device for these two recording media is a device that includes a rotation control system, a laser drive system circuit, an optical system circuit, and processing such as error correction of data recorded on the medium. .

The basic operation of this video recording / reproducing apparatus will be described. Video signals and audio signals are input from the video input unit 1 and the audio input unit 2. The video signal is converted by the analog-digital (A / D) conversion circuit 3, and the audio signal is converted by the A / D conversion circuit 4 from an analog signal to a digital signal.

The converted video digital signal is encoded into MPEG2 compressed video data by the encoder 5, and the audio digital signal is encoded into compressed audio data such as AC3 or MPEG. Further, these compressed video and audio data are further converted into an MPEG2 system layer by the encoder 5.

A signal from the encoder 5 is format-converted by the formatter 6 and converted into a format defined by the DVD recording standard (DVD-RAM, DVD-RW, etc.).

The format-converted signal is converted into recording data including a command conforming to the DVD-RAM drive 8 or the hard disk drive 9 in the data processing unit 7, and recorded in the DVD-RAM or the hard disk. The data processing unit 7 is mainly occupied by a buffer circuit.

Here, in this apparatus, in addition to the format-converted data, reproduction management information is created by the MPU unit 18 and recorded in the DVD-RAM or hard disk via the data processing unit 7.

Further, the information recorded in the DVD-RAM can be recorded in the hard disk via the data processing section 7. On the contrary, the information of the hard desk is DVD-RA
It is also possible to record in M. However, DVD-RA
The condition is that both M and the hard disk have the same format.

It is also possible to edit a plurality of programs recorded on the DVD-RAM or hard disk. In that case, it is possible to easily delete a plurality of programs, reproduce for editing, etc. by a method corresponding to the RTR-DVD format described later. In that case, the MPU unit 18 corrects the management information and further copies, moves, or deletes the formatted signal via the data processing unit 7.

When reproducing the recorded data, the DVD-
The formatted data is input to the data processing unit 7 from the RAM or the hard disk, and the output of the data processing unit 7 is input to the decoder 10. In the decoder 10, the DVD
Decodes the format signal.

The decoder 10 mainly has a portion for separating the formatted data and a portion for decoding the separated compressed video data and audio data. The video data is subjected to decoding processing according to the MPEG2 system, and the audio data is subjected to decoding processing such as MPEG and AC3. The decoded video data and audio data are respectively assigned to the selector 11A,
Sent to 11B. In the selectors 11A and 11B, the input signal is directly input to the digital / analog D / A conversion circuit 12,
It is switched between the case of sending to 13 and the case of reproducing the recorded information. The switching control is performed by the MPU unit 18.

The video data output from the selector 11A is converted into an analog signal by the D / A conversion circuit 12,
It is supplied to the monitor 14. The audio data output from the selector 11B is converted into an analog signal by the D / A conversion circuit 13 and supplied to the speaker 15.

In addition to the above, the MPU section 18 receives user command control from the key input section 16 and controls the operation of the recording / reproducing apparatus. In addition, MPU section 1
The display unit 17 displays the current status of the device to the user.
To display.

The MPU unit 18 is provided with a RAM and a ROM containing a control program for these processes. The MPU controls the entire system, inputs command control from the user, displays the current status, and detects various DVD formats according to the control program.

Here, the relationship between the management information of the real-time DVD and the video object which is the content will be briefly described.

In FIG. 2, the video object (VOB) will be described first. VOB is VR_MOVIE. It is stored in a video file called a VRO file. Video files have a hierarchical structure. One file is composed of one or more VOBs (video objects), one VOB is composed of one or more VOBUs (video object units), and one VOBU. Is composed of a plurality of packs. As the plurality of packs, there are RDI packs, V (video) packs, A (audio) packs, and the like. A sub-picture pack (SP pack) may exist.

The RDI pack is called a unit control information pack, a navigation information pack, or a real-time data information pack (RDI_PACK). In this pack, information indicating the start time at which the first field of the VOBU to which this pack belongs is played back, that VOB.
It includes information indicating when U is recorded, manufacturer information (MNFI), and the like. It also includes display control information (DCI) and copy control information (CCI). The display control information indicates aspect ratio information, subtitle mode information, and film camera mode information. The copy control information (CCI) includes copy permission information (0,0) or copy prohibition (copy prohibition permission) information (1,1).

The V pack is obtained by compressing video data according to the MPEG2 system, and is composed of a pack header, a packet header and a video data section. Audio data in the A pack is, for example, linear PCM or MPE.
It is encoded by a method such as G or AC3, and includes a pack header, a packet header, and an audio data section.

The management information is VR_in the directory.
MANGR. It is stored in a management information file called IFO. The management information is called a video manager (VMG), in which a program chain (PGC) for managing the data reproduction order is defined, and a cell (CELL) is defined in this PGC. PGC is multiple C
The ELL order is described and specified. Cell (CEL
L) defines video object information (VOBI), which is information about a video object (VOB) to be reproduced.

A portion in which concrete information of PGC is recorded is a program chain information (PGCI) portion. PG
There are two types of CI, one is the original PGCI.
(ORG_PGCI) and the other is a user defined PGC table (UD_PGCIT). Normal,
At the time of recording, the original PGCI is created. The user-defined PGCIT is created as management information called a playlist when a video object managed by the original PGC is edited (deleted, added, thinned out) or the like.

In the VOBI, a time map (TMA
P) is described, and this TMAP is information designating a VOBU forming a VOB corresponding to the VOBI. The link from CELL to VOBI is specified by a logical address. Further, the link from the TMAP information to the VOB and VOBU is performed based on the stream number of the VOB and the logical address to each target VOBU. Further, in the management information, there is VOBU size information (VOBU_SZ) indicating the recording capacity of the VOBU.

The hierarchy of PGCI in the management information will be described with reference to FIG.

Program chain information (PGCI) is
Program chain general information (PGC_GI), program information (PGI), cell information search pointer (CI)
_SRP) and cell information (CI). PGC_GI
Describes the number of programs (PG_Ns) indicating how many programs are reproduced by the program chain, and the number of cell search pointers (C_SRP_Ns) indicating how many cell search pointers are present. Figure 3
, The program information PGI # 1, ..., PGI # n
Exists. Also, the cell search pointer C_SRP #
, ..., C_SRP # n exist.

The program information PGI includes the program type (PG_TY) and the number of cells of this program (C_
Ns) and the main text information (PRM) of this program
_TXTI), a text information search pointer number (IT_TXT_SRPN) having a special structure, and representative image information (REP_PICTI). The representative image information PRM_TXTI is the cell number (CN) of the representative image and the picture point (PICT_PT) in this cell.
Is included in the presentation time PTM.

In the cell search pointer C_SRP, the start address (CI_SA) of the next cell information (CI) is described by the logical address of the file.

The cell information (CI) is the moving picture cell information (M_
CI) or still image cell information (S_CI). The video cell information M_CI includes cell general information (M_C_G
I) and movie cell entry point information (M_C_
EPI # 1 ... M_C_EPI # n) is described.
The M_C_GI includes a cell type (C_TY), a search pointer number (M_VOBI_SRPN) for designating a VOBI specified by this cell, and a cell entry point information number (C_EPI_Ns) indicating how many movie cell entry point information there are. It has been described. Also, the video start time (C_V
_S_PTM), video end time (C_V_E_PT)
M) is described.

Here, in the movie cell entry point information (M_C_EPI), the entry point type (EP_TY) and the entry point presentation time (EP_PTM) are described.

The reproduction management information particularly relevant to the present invention is
This movie cell entry point information (M_C_E
PI). This cell entry point information is referred to when an entry operation is performed during playback of the recording / playback apparatus. When the entry point is described, jump to the object at the presentation time indicated by the entry point next to the position currently being played. The apparatus of the present invention performs recording and creates management information. When the recording information capacity reaches 4.7 GB, the previous movie cell entry point information (M_C_EPI) is automatically created.

FIG. 4 shows a procedure for creating entry point information when recording is performed on the hard disk. Recording is started, a recording area of the memory is secured, preparations for creating management information are made, and recordings are prepared (S100, S101). Next, recording is started on the hard disk (S102). Next, it is determined whether or not the recorded capacity is 4.7 GB (S103).
If the recorded capacity has not reached 4.7 GB, the current recording capacity is calculated (S107). This calculation can be performed by using, for example, bitmap data indicating the use portion of the disc in the UDF standard or VOBU_SZ indicating the recording capacity of VOBU in TMAP. It is determined whether the recording end operation has been performed or the time has expired due to reserved recording or the like, and the recording has ended (S107).

The recording capacity is 4.7 G instead of the end of recording.
When it has not reached B, the loops S103, S106,
S107 is repeated. When the recording capacity reaches 4.7 GB, the entry point information is set in the management information of the hard disk (S104). Then, the flag for executing the recording capacity calculation is cleared (S10).
5). It is again determined whether or not the recording is completed (S107). If the recording is not completed, the process returns to step S103 and the above process is repeated.

If it is determined that the recording has ended, an ending process is performed (S108). Here, under the control of the MPU unit 18, finally the management information accumulated in the random access memory is completed and recorded in the hard disk.

FIG. 5 shows a processing procedure in the case of dubbing video information having entry points added to the hard disk in units of 4.7 GB as described above to a DVD-RAM (recording capacity of 4.7 GB).

When dubbing starts (S200),
The remaining amount of the dubbing destination medium (DVD-RAM in this case) is acquired. This remaining amount can also be calculated by reading a bitmap showing the recording situation in the UDF standard and using this bitmap (S20).
1). Next, the management information of the dubbing destination medium (DVD-RAM) is ticked. It is determined whether the DVD-RAM has management information. If there is no management information, preparation is made to create management information (S205). If the management information has already been recorded in the dubbing destination DVD-RAM,
This is read and once under the control of the MPU unit 18,
Store in random access memory.

Next, the recording data capacity of the dubbing source is calculated (S206). Dubbing source (hard disk)
The recording data capacity of is less than 4.7GB, 4.7G
B or more and a multiple of 4.7 GB or the like. The calculation result is
DVD-R with a recording data capacity of 4.7 GB or less (A1)
Remaining capacity of AM (B1), A1 (maximum 4.7G
If the relationship of B) <B1 (maximum 4.7 GB) is satisfied, it is determined that dubbing is possible (S207). Conversely, A1 (maximum 4.7G
If B)> B1, it is determined that dubbing is not possible, and the dubbing process ends. At this time, a warning may be displayed.

In the case of the present invention, even if the recording data capacity of the dubbing source (hard disk) is 4.7 GB or more,
In step S207, it is determined that the maximum is 4.7 GB. The data recorded on the hard disk is 4.7G.
This is because the entry point information is set so that it can be handled in B units.

If it is determined that dubbing is possible, the device
Ask the user which side of the DVD-RAM, A side or B side, should be dubbed. This inquiry may be in a display form, may be made by voice, or may be a combination thereof.

When the user selects recording on the A side, the reading start position on the hard disk is set at the beginning of the title (S209). this is,
When the user uses the system, A of DVD-RAM
This is because it is normal to first select the surface as the playback surface. On the contrary, when the user selects recording on the B side, the entry point (4.
Set to the point where the data amount of 7 GB has elapsed (S
210).

Next, the management information of the hard disk is changed to DV.
A process of adding to the management information of the D-RAM is performed (S
211). In this additional processing, dubbing is performed on the empty A-side of the DVD-RAM, and in the case of the DVD-RA.
In the case where the information is already recorded on the A side of M and the dubbing subsequent to this is performed, the reproduction time information in the management information and the correction processing content of the number (cell number etc.) indicating the reproduction order of the objects are different. When dubbing is performed on the empty A-side of the DVD-RAM, the hard disk management information (for handling 4.7 GB) is simply copied as the DVD-RAM management information. DVD-RAM A
When information is already recorded on the surface and dubbing following this is performed, the reproduction time information for the last object of the already existing management information and the number (cell number etc.) indicating the reproduction order of the objects are referred to. It Then, the reproduction time information for the first object of the management information of the hard disk and the number (cell number or the like) indicating the reproduction order of the objects are corrected so as to be continuous with the reproduction time information of the existing management information.

Next, when dubbing is performed on the B-side of the DVD-RAM, the reproduction time information indicating the entry point onward of the management information of the hard disk, the reproduction order, etc.
It is modified so that it can be played from the beginning of the object. This is to reproduce the B side of DVD-RAM,
This is because when the DVD-RAM is loaded in the playback device, it is necessary to read the management information again and execute playback from the beginning of the B-side object. Therefore, in this system, recorded data of 4.7 GB or more is recorded on the hard disk, and this recorded data is recorded on the DVD-RA.
In the case of separately recording the A side and the B side of M, it also has a function of dividing the management information constructed in the hard disk into the A side and the B side.

After the management information is processed as described above, the video information is actually copied to the A side or B side (S212). Then, when this copying is finished, under the control of the MPU unit 18, each management information is read from the memory and recorded in the DVD-RAM (S21).
3). This ends the dubbing process (S21).
4).

As described above, according to this embodiment,
When performing reserved recording or temporary recording on the hard disk, an entry point indicating a point corresponding to the storage capacity of one side of a medium (for example, DVD-RAM) to be used for dubbing later can be set. Therefore, the information management when dubbing is easy, and the user's troublesome operation is unnecessary.

For this reason, when setting an entry point and dubbing information, a DVD-RAM is used.
When dubbing to the A side and B side of, the dubbing is performed from the beginning of the title on the A side, and the data after the entry point is dubbed on the B side. At this time, it has a function of correcting the management information built in the hard disk as the management information for managing the B and B sides after the entry point.

Here, it is explained that the DVD-RAM has the recording surfaces of A side and B side. But this invention
The above operation can be executed even with one recording surface. In this case, by setting the continuous dubbing mode, the management of the above-mentioned entry points can be performed. When the continuous dubbing mode is set, the process branches to steps S209 and S210 depending on whether it is the first dubbing in the step S208 of FIG. 5 or the consecutive second and subsequent dubbing.

The present invention is not limited to the above embodiment. Hereinafter, an example to which the present invention is applied will be described. When performing reservation recording, there is a recording method called just recording. This measures the remaining recording capacity of the recording media,
In this method, recording is performed so that the remaining recording amount corresponds to the recording period reserved for recording. By using this method,
Since the remaining recording capacity of the recording medium can be fully used, high image quality and efficient recording are possible. The video recording / reproducing apparatus having the double-sided recording medium DVD-RAM and hard disk can be provided with the just recording function.

Then, it is necessary to consider the problem of how to apply the just recording function to a double-sided recording medium capable of AB-side recording. In other words, considering high-quality recording and efficient use of the disk capacity, the recording capacity of the double-sided recording medium (9.4 GB)
It is preferable to make full use of. However, if you try to do a just recording on a double-sided recording medium,
After recording on one side, it must be turned over and used.

However, there is a problem that the program to be recorded will pass while the double-sided recording medium is turned inside out. Further, in the reserved recording mode, there is a problem that it is impossible to turn over the work because the user is absent.

Therefore, the hard disk built in the device is effectively used to perform just recording on the double-sided recording medium.
It is possible to automatically obtain reproduction management information that can be temporarily implemented in the hard disk and that can manage exactly half of the total recorded data amount for the double-sided recording medium. In this case, the idea of the present invention is effectively utilized.

(1) The hard disk built in the apparatus is effectively used, and when the recording on the double-sided recording medium is completed on one side, the recording on the hard disk is started so that the just recording can be realized.

(2) Further, in this case, just recording cannot be performed on the loaded double-sided recording medium (for example, when the loaded disc is a reserved disc dedicated to another program, or In the case of a disc on which other information has already been recorded), recording is executed on the hard disc.
That is, just recording on the double-sided recording medium can be temporarily realized on the hard disk.

(3) Further, in this case, in the case of the double-sided recording medium, it is preferable to devise the reproduction management information so that the reproducing apparatus can recognize the time point of just half of the total recorded data amount. It is the variable length compression method in the DVD standard that the time is set to about half of the total recording data amount and not to the half of the total recording time. The half length of the total recording time is not exactly the total recording data amount. This is because it does not always match half the points. Therefore, it is possible to automatically obtain the reproduction management information capable of temporally managing just half of the total recorded data amount.

Therefore, in an information recording / reproducing apparatus for accessing a plurality of recording media by time sharing, the information is divided into substantially equal amounts on both sides of the first recording medium capable of double-sided recording. In the case of the mode for recording the video information or when the information recording on the first recording medium is impossible, the following processing is performed.

While the video information is recorded on the second recording medium, a division point at which the information amount on both sides is approximately equal is shown as reproduction management information for the video information recorded on the second recording medium. The reproduction management information is created and the reproduction management information is recorded in the second recording medium.

FIG. 4 shows an example of a flow chart for realizing the above operation.

First, the recording of the DVD-RAM is started (S301). Next, the management information of the DVD-RAM is read (S302), and it is checked whether the medium of the DVD-RAM is a double-sided medium and nothing is recorded (S30).
3). If it is a double-sided DVD-RAM and nothing is recorded (blank disc), normal AB-side recording is performed. First, the management information based on the DVD standard is created to prepare for recording (S311). Next, since it is reserved recording, the reservation start time is checked, and if the reservation start time (S312) comes, recording is started on the DVD-RAM (S31).
3). Recording is continued and it is constantly checked whether or not there is a remaining amount in the DVD-RAM (S314).

If the DVD-RAM is full, the cell entry point information (M_C_EPI) at that time is set in the management information of the DVD-RAM (S315). As soon as the DVD-RAM runs out,
Recording of the DVD-RAM is completed. At the end, the management information such as the above entry points is also recorded (S31).
6).

Then, this time, the entry point information (M_C_EPI) is set in the management information of the hard disk (S317), and the recording on the hard disk is started (S306). Check the reservation end time (step S
309), and recording is continued until the reserved time ends. When the reserved time is over, the ending process is performed (S310), the management information such as the above-mentioned entry points is also recorded, and the normal process of recording ends (S201).

As described above, the one-sided recording on the DVD-RAM is automatically performed, and thereafter, the B-side image information recorded on the hard disk may be dubbed by the user.

Next, the processing when the DVD-RAM medium is not a double-sided medium or when the video information is already recorded will be described.

In step S303, if the medium is not a double-sided medium or if video information has already been recorded, preparation of hard disk management information and preparation for recording are made (S30).
4). Then, the start of the reserved time is awaited (S305). When the reservation start time comes, recording is started on the hard disk (S306). Since the generated information amount is not constant, the information amount is constantly monitored (S307).
When the recording capacity becomes half (for one side) of both sides of the disc, the entry point information (M_C_EPI) is set in the management information of the hard disc (S308). After that, recording is continued until the reservation end time (step S30).
9). After the reservation time has ended, the end processing is performed, and the management information of the hard disk including the above entry points is also synchronously recorded (S310). Stop recording.
After that, the user newly creates a double-sided blank media DVD
-By inserting into the RAM drive and performing dubbing, it is easy to complete AB recording on the double-sided media.

FIG. 5 shows the entry point information recorded on the hard disk and the DVD-which is a double-sided recording medium.
The recording capacity of the RAM is shown. As described above, when the AB side recording is finished only with the hard disk, it can be seen that the recording capacity of the A side exactly matches the recording capacity up to the entry point of the hard disk.

The DVD-R in step S303
As for the determination of the AM medium, in addition to the above case, it may be possible to enter the write mode to the hard disk for the reason that the medium cannot be written due to dirt or scratches on the disc.

Further, in step S307 of the above description, a method of checking whether the recording amount of the hard disk matches the A-side portion may be used. In that case, even if you record with the AB side recording method, the recording time is insufficient (because the maximum amount of data generated by the DVD standard has been determined), and even if you do not use all the recording capacity of the AB side, all the A side capacity (For example, in the case of a 9.4 GB double-sided DVD-RAM, 4.
7 GB) and the side B has a recording remaining amount.

Although the above-mentioned normal AB screen recording method is not the process shown in the flowchart of FIG. 6, normally when the recording is transferred from the DVD-RAM to the hard disk, the DVD-RAM before and after the switching, Both hard disks are recorded at the same time to prevent the loss of video information.

Although the DVD-RAM is used as the first recording medium and the hard disk is used as the second recording medium in this embodiment, they may be other recording media.

The video recording / reproducing apparatus may have any configuration as long as it satisfies the gist of the present invention.

By using the above recording method, even if the video information cannot be recorded on the first recording medium, the user can record the video information on the second recording medium by the capacity of the double-sided recording medium. By a recording method in which a single-sided equal amount is recorded on the double-sided recording medium without performing a troublesome operation, the user can easily perform equal-dubbing on the double-sided recording medium after the recording is completed.

In the above description, the recording capacity A of the hard disk (first recording medium) is compared with the optical disk (second recording medium).
When the recording capacity of the recording medium B) is <A, the unit for setting the entry point is 4.7 GB, but the unit is not limited to this. Almost 4.7G
It may be B or less. More specific units 4GB, 3G
It goes without saying that the B and 2 GB units may be arbitrarily selected. Further, in the above description, an example in which the present invention is applied to a device in which a hard disk built in the device and an optical disk as a removable device can be accessed by time sharing has been described. However, the present invention is not limited to this, and it goes without saying that the present invention can be applied to an apparatus having only a hard disk.

[0081]

As described above, according to the present invention,
When information is recorded on a recording medium having a large storage capacity and, for example, information is copied to a recording medium having a small recording capacity, it is easy to copy the information and it is possible to improve the problem caused by the difference in recording capacity.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an information recording / reproducing apparatus according to the present invention.

FIG. 2 is an explanatory diagram showing a relationship between management information of a real-time recording DVD standard and a video object.

FIG. 3 is an explanatory diagram showing the contents of a program chain of the real-time recording DVD standard.

FIG. 4 is a flowchart showing an example of a recording operation according to the embodiment of the present invention.

FIG. 5 is a flowchart showing an example of a dubbing operation in the embodiment of the present invention.

FIG. 6 is a flowchart showing an example of a recording operation according to another embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a relationship between a hard disk recorded by the operation of FIG. 6 and a recording capacity of a DVD-RAM.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Video input part, 2 ... Audio input part, 3, 4 ... A / D conversion circuit, 5 ... Encoder, 6 ... Formatter, 7 ... Data processing part, 8 ... DVD-RAM drive device, 9 ... Hard disk drive, 10 ... decoder, 11A, 11B ...
Selectors, 12, 13 ... D / A conversion circuits, 16 ... Key input section, 17 ... Display section, 18 ... MPU section.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 27/10 H04N 5/91 P H04N 5/91 G11B 27/02 K F term (reference) 5C053 FA15 FA23 GB01 5D044 BC01 BC04 CC04 DE23 DE24 DE48 EF05 FG18 GK12 HL07 5D077 AA22 AA23 DC01 DC12 EA33 EA34 5D090 AA01 BB04 CC01 CC04 FF24 FF29 GG36 5D110 AA13 AA14 BB01 BB23 BB24 DA01 DB10 DC26 DD13

Claims (13)

[Claims] 1. Information is recorded on or reproduced from a first recording medium built in the apparatus,
In a recording / reproducing method capable of displaying reproduced information on a monitor, the first recording medium has a first recording capacity A, and the information is at least video information and is necessary for managing and reproducing the video information. Management information, wherein the management information is recorded including the entry point information of the video information, and the entry point,
The second recording capacity B (<the recording capacity of the second recording medium
A) A video recording / reproducing method characterized by generating and setting in units. 2. The video recording / reproducing method according to claim 1, further comprising recording information on or reproducing information from a second recording medium detachable from the apparatus. 3. The video recording / reproducing method according to claim 2, wherein the first recording medium is a hard disk and the second recording medium is an optical disk. 4. The video recording / reproducing method according to claim 3, wherein the unit of the second recording capacity B (<A) is set to about 4.7 GB or less. 5. When performing dubbing from the first recording medium to the second recording medium, the dubbing starts from the beginning of the video information recorded on the first recording medium, 2. The video recording / reproducing method according to claim 1, wherein the dubbing is started from the entry point in the next dubbing after the dubbing of the recording capacity A is performed. 6. The video recording / reproducing method according to claim 5, wherein the next dubbing is performed after the second recording medium is replaced with a third recording medium. 7. The video recording / reproducing method according to claim 5, wherein the next dubbing is performed after the recording surface of the second recording medium is exchanged. 8. When the next dubbing is performed,
Of the management information recorded on the first recording medium,
6. The video recording / reproducing method according to claim 5, wherein the management information after the entry point is modified and created as new management information. 9. Information is recorded on or reproduced from a first recording medium built in the apparatus,
In a recording / reproducing apparatus capable of displaying reproduced information on a monitor, the first recording medium has a first recording capacity A, and the information is at least video information and is necessary for managing and reproducing the video information. The management information is recorded by including the entry point information of the video information in the management information, and the entry point is recorded in the second recording capacity B (<
A) A video recording / reproducing apparatus having means for generating and setting in units. 10. A video recording / reproducing device according to claim 9, further comprising means for recording information on a second recording medium detachable from the apparatus or reproducing the information from the second recording medium. apparatus. 11. The video recording / reproducing apparatus according to claim 10, wherein the first recording medium is a hard disk, and the second recording medium is an optical disk. 12. The video recording / reproducing apparatus according to claim 11, wherein the unit of the second recording capacity B (<A) is set to approximately 4.7 GB or less. 13. A means for starting from the beginning of the video information recorded on the first recording medium when dubbing from the first recording medium to the second recording medium, at the start of dubbing, 10. The video recording / reproducing apparatus according to claim 9, further comprising means for starting the dubbing from the entry point in the next dubbing after the dubbing of the first recording capacity A.