JP2003022610A - Information recording medium, and information recording and reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the state of movement of a title, execution of copy, copy of the title in a recording medium, and transfer restrictions easy to understand, and to carry out dubbing corresponding to the contents of copy information. SOLUTION: The information recording medium has a RTR.IFO (information for managing information on a disk) file, a RTR- MOV.VRO (movie video file), a RTR- STO.VRO (still picture video file), and a RTR- STA.VRO (still picture audio file) in a directory. A TS-INFO is further provided to create a copy information management (CPOY.IFO) file.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing device having a dubbing function, which has a plurality of information recording / reproducing devices built therein. As a recording / reproducing apparatus to which the present invention is applied, for example, a hard disk (HDD),
There is a device capable of simultaneously handling an information recording medium such as a rewritable DVD (Digital Versatile Disc). The information recording medium may be a large capacity semiconductor memory.

[0002]

2. Description of the Related Art In recent years, in image compression technology, MPEG2 (Moving Image Coding Expert), which is currently internationally standardized
The DVD standard has been proposed that uses the Group) method and also employs the AC3 audio compression method.

According to the MPEG2 system layer, this standard supports the MPEG2 system as a moving image compression system,
AC3 audio compression method and MPEG as audio compression method
Supports audio compression method. Further, sub-picture data obtained by run-length compressing bitmap data for subtitles such as movies and karaoke can be handled. Further, in this standard, in relation to the playback device, special playback control data (navi pack) for fast forward and reverse feed is added. Furthermore, this standard supports the IS09660 and micro UDF standards so that the computer can read the data on the disc.

As the standard of the medium itself, DV is
Following the standard of the DVD-ROM which is a D-video medium, the standard of the DVD-RAM (recording capacity of about 4.7 GB) has been completed, and the DVD-RAM drive has begun to spread as a computer peripheral device.

Furthermore, at present, a DVD-Video standard that realizes a system capable of recording and reproducing information in real time using a DVD-RAM, that is, VR (Video record)
ing) -DVD standard is being completed, and verification work is scheduled to be completed soon. This standard is considered based on the DVD-Video standard currently on the market. Further, a file system compatible with the VR-DVD is currently standardized.

On the other hand, the hardware built in the recording / reproducing apparatus
A method of recording and reproducing a broadcast signal by using a disk device (HDD) has also been considered. 1 for hard disk drive
It is possible to record data of 00 GB or more.

As described above, due to the recording / reproducing medium having an increased recording capacity and the progress of the signal processing technique, recently, a removable DVD-RAM (or DVD-R, DVD) is used.
An optical disc recording / reproducing apparatus capable of handling (RW) and an information recording / reproducing apparatus having an HDD built therein are being considered.

Here, when considering the usage pattern of such a device, the following usage patterns are possible. That is, a broadcast program signal (or a reproduction signal from another medium) is converted into a predetermined format to convert it to a hard disk or a DVD-RA.
Record in M. Such recording processing is executed at intermittent program reservation times. In addition, a plurality of programs are once recorded in a built-in recording medium (hard disk). Then, the recorded programs are combined or partially deleted for editing, and the result of the editing is recorded on the hard disk or D.
Re-record in VD-RAM.

Usually, the hard disk is built in the device, and the DVD-RAM is used as a removable medium.

In recent years, it has been demanded that an apparatus for recording / reproducing information has a copy protection function in order to protect the copyright of the content. In order to perform copy protection, copy information is included in the content management information and header. When the copy information indicates that copying is prohibited, the content cannot be recorded on the recording medium. However, some content is copy-free and one-copy-permitted.
When the copy information indicates copy-free, it is necessary to record on the recording medium so that a free copy of the content can be obtained. If the copy information indicates that copying is permitted once, the content is scrambled so that normal playback cannot be performed even if dubbing is performed, and the management information and header are copied. Information is rewritten as copy-prohibited and recorded on a recording medium.

When reproducing the scrambled information from the recording medium, the scramble must be released. Key information is required to unscramble. As the key information, the key information including the device key written in the EPROM at the time of manufacturing the recording / reproducing apparatus is used.

[0012]

By the way, an information recording / reproducing apparatus has been developed which can simultaneously handle a medium such as a hard disk (HDD) and a rewritable DVD (Digital Versatile Disk) at the same time. ing. That is, this device has a plurality of media (disk) drives inside.

In this type of information recording / reproducing apparatus, a function of copying or moving data between a plurality of media inside the apparatus is desired. However, depending on the type of data, it is prohibited to perform dubbing or copying as described above. For this reason, the information recording / reproducing apparatus is provided with a function of restricting the copying process between recording media with respect to the copy prohibited data. On the other hand, for the copy-free (permitted) data, the copy process between the recording media is executed.

It is impossible for the user to easily identify the copy prohibited data, the copy permitted data, and the data permitted to be copied once from the outside of the apparatus. For this reason, even when the user operates the information recording / reproducing apparatus, sets the copy mode from one recording medium to the other recording medium, and thinks that copying has been performed, data may not be recorded in some cases. In such a case, the user may erroneously recognize that a device failure has occurred.

Therefore, according to the present invention, it is easy to understand how the data (title) is being moved or copied, and it is easy to understand the state where the data (title) in the recording medium is restricted from being copied or moved. It is an object of the present invention to provide an information recording medium and an information recording / reproducing device that can be used.

[0016]

In order to achieve the above object, the present invention defines a pack unit for compressing data into a predetermined pack, and further uniting a unit by collecting a plurality of packs. And a title unit in which a plurality of units are aggregated to form a title, a content area in which a plurality of titles can be recorded, at least selection information for reproducing the title, and a selected title In an information recording medium having a management information area for recording management information including information indicating a reproduction order, further, as a copy information management file, copy information indicating whether the title is copy-prohibited or copy-free Define a copy information management file that contains the file and place this copy information management file in the directory area. It is intended. The recording / reproducing apparatus is adapted to monitor or additionally record the copy information management file.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

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

When the blocks in FIG. 1 are roughly divided, the left side shows the main blocks of the recording section, and the right side shows the main blocks of the reproducing section. This information recording / reproducing apparatus includes a hard disk drive unit 2001 that drives a hard disk.
And an optical disk drive unit 1001 for rotationally driving an optical disk, which is an information storage medium capable of constructing a video file, to read / write information.

Reference numeral 1003 denotes a data processor section,
Recorded data can be supplied to the hard disk drive section 2001 and the optical disk drive section 1001, and reproduced data from the disk can be received.
In this case, the recording data supplied to the hard disk drive unit 2001 or the reproduction data received from the disc side is output or input through the encryption / decryption unit 2002. The recording data supplied to the optical disc drive unit 1001 or the reproduction data received from the disc side is output or input through the encryption / decryption unit 1002.

The data processor unit 1003 handles data in recording or reproducing units, and includes a buffer circuit, a modulation / demodulation circuit, an error correction unit and the like. A temporary storage unit 1004 that functions as a buffer is connected to the data processor unit 1003.

Further, this recording / reproducing apparatus has an encoder section 50 constituting a recording side and a decoder section 60 constituting a reproducing side.
And a microcomputer block 30 that controls the operation of the apparatus main body.

The encoder unit 50 includes a video and audio analog-digital converter (A / D) for digitizing the input analog video signal and the input analog audio signal, and a video encoder (V-
E) and an audio encoder (AE).
Furthermore, it also includes a sub-picture encoder. Further, it is provided with a formatter unit for converting the output of each encoder into a predetermined DVD-RAM format and a buffer memory. An external analog video signal and an external analog audio signal from the AV input section 41 or an analog video signal and an analog audio signal from the TV (television) tuner 42 are input to the encoder section 50.

When the digital video signal or the digital audio signal is directly input, the encoder unit 50 directly supplies the digital video signal or the digital audio signal to the formatter unit. Although not shown, each video data and audio data can be supplied to the video mixing unit and the audio selector.

In the video encoder, the digital video signal is converted into a digital video signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard. Digital audio signals are MPEG or AC
It is converted into a digital audio signal compressed at a fixed bit rate or a linear PCM digital audio signal based on the -3 standard.

When sub-picture information is input from the AV input section 42 (for example, a signal from a DVD video player with an independent output terminal for sub-picture signals), or a DVD video signal having such a data structure is broadcast, which is broadcast. When received by the TV tuner 42, the sub-picture signal in the DVD video signal is encoded (run-length compressed) by the sub-picture encoder (SP-E) and becomes a sub-picture bitmap. The same applies to signals such as captions and teletext.

The encoded digital video signal, digital audio signal, and sub-picture data are packed in a formatter to form a video pack, an audio pack, and a sub-picture pack, which are further aggregated,
DVD-recording standards (eg DVD-RAM, DVD
-R, DVD-RW and other standards). This processing is performed by the RTR (real time recording) pack setting section of the formatter section.

Here, the present apparatus stores the information encoded by the encoder section 50 (pack of video, audio, sub-picture data, etc.) and the created management information in a predetermined recording unit via the data processor 1003. It can be supplied to the hard disk drive unit 2001 and recorded in the hard disk. In addition, the information recorded on the hard disk is read out via the data processor unit 1003 and the optical disk drive unit 1001, and the optical disk 100 is read.
It can also be recorded in 1. This is because the information recorded on the hard disk is the same as the data format of the optical disc 1001. However, in this case,
This is accompanied by the operation of the copy protection function described later.

Furthermore, the information encoded by the encoder section 50 and the created management information can be directly recorded on the optical disc through the data processor section 1003 and the optical disc drive section 1001. Furthermore, it is possible to delete (file or video object) recorded on the optical disk and the hard disk. Further, it is possible to perform an editing process of partially deleting video objects of a plurality of programs recorded on a hard disk or an optical disk, connecting objects of different programs, and the like. This is because the format according to the present invention defines a data unit (which will be described later) handled and facilitates editing. In this case as well, it goes without saying that the operation of the copy protection function described later is accompanied.

If the information recorded on the hard disk differs from the data format of the optical disk 1001, the encoder unit 50 encodes the information read from the hard disk. Then, the encoded information can be recorded on the optical disc.

The optical disc drive section 1001 has a rotation control system for the optical disc 1001, an optical head control system (including a laser drive system and an optical system), and the like. The hard disk drive unit 2001 includes a rotation control system for the hard disk, a magnetic head control system, and the like.

The microcomputer block 30 has M
PU (Micro Processing Unit) or CPU
It includes a (central processing unit), a ROM in which a control program and the like are written, and a RAM for providing a work area necessary for executing the program.

MP of the microcomputer block 30
U follows the control program stored in the ROM,
Using the RAM as a work area, defect location detection, unrecorded area detection, recording information recording position setting, UDF recording, AV address setting, and the like for the recording medium are executed.

Further, the microcomputer block 30
Has an information processing unit necessary for controlling the entire system, including work RAM, directory detection unit, and VMG.
(Overall video management information) Information creation and management information analysis unit, copy related information detection unit, copy and scrambling information processing unit (RDI processing unit), packet header processing unit,
A sequence header processing unit, an aspect ratio information processing unit, a copy movement management unit, etc. are provided.

Of the execution results of the MPU, the contents to be notified to the user are displayed on the display unit 43 of the DVD video recorder or OSD (on-screen display) on the monitor display. Further, the microcomputer block 30 has a key input section 44 (including a remote control system) for giving an operation signal for operating this apparatus.

The microcomputer block 30
However, the timing for controlling the optical disc drive unit 1001, the data processor unit 1003, the encoder unit 50 and / or the decoder unit 60, etc. can be executed based on the time data from the STC (system time clock) 38. Recording and playback operations are usually STC3
Although it is executed in synchronization with the time clock from 8, the other processing may be executed at a timing independent of the STC 38.

Next, the decoder section 60 will be described. The decoder unit 60 separates and extracts each pack from a DVD-format signal having a pack structure, a memory used when performing pack separation and other signal processing, and main video data (video) separated by the separation unit. Video decoder (V-D) for decoding pack contents), SP decoder (SP-D) for decoding sub-picture data (contents of sub-picture pack) separated by separators, and audio data separated by separators (Contents of audio pack)
It has an audio decoder (A-D) for decoding. Further, it is provided with a video processor (V-PRO) which appropriately synthesizes the decoded sub-picture data with the decoded main-picture data, and superimposes a menu, a highlight button, subtitles, and other sub-pictures on the main picture. .

The output video signal of the decoder section 60 is input to the frame memory control section 71. The frame memory control section 71 can also combine the text data from the microcomputer block 30 and the video signal. The frame memory control unit 71 also has a line (not shown) for directly taking in signals from the TV tuner unit 42 and the A / V input unit 42.
Is also connected. Frame memory control unit 71
A frame memory 72 used as a buffer is connected to. If the output of the frame memory control unit 71 is a digital output, an interface (I / F)
It is output to the outside via (not shown), and in the case of analog output, it is output to the outside via the digital-analog converter 74.

In audio, the output audio signal from the coder (A-D) is converted into a digital-analog converter (D / A).
Is converted to analog and output to the outside.

Although not shown, a selector is provided in the output signal path for outputting the audio signal. The selector is the microcomputer block 30.
Controlled by the select signal from. As a result, when the selector directly monitors the digital signal from the TV tuner unit 42 or the A / V input unit 41, the encoder unit 5
It is also possible to directly select and output a signal that passes 0.

Note that the formatter of the encoder section 50 prepares each segmentation information during recording and periodically sends it to the MPU of the microcomputer block 30 (information at the time of GOP head interrupt). As the isolation information, V
There are the number of OBU packs, the end address of the I picture from the beginning of the VOBU, the playback time of the VOBU, and the like.

Further, the formatter of the encoder section 50 uses the information from the aspect information processing section M at the start of recording.
Send to PU, MPU sends VOB stream information (STI)
To create. Here, the STI stores resolution data, aspect data, etc., and at the time of reproduction, each decoder section is initialized based on this information.

Here, in a real-time recording / reproducing apparatus using a DVD, a point to be noted is that when data is accessed, the reproduction is continued without interruption during the access (seek). Consecutive sectors are needed. This unit is called CDA (Contiguous
Data area). In other words, it is a data size that is agreed in advance to realize seamless reproduction.

It is advantageous that the CDA is in ECC (error correction code) block units. Therefore, the CDA size is set to a multiple of 16 sectors, and the file system records in this CDA unit. The data processor unit 1003 receives data in units of VOBU from the formatter of the encoder unit 50 and supplies data in units of CDA to the disk drive unit 1002.

When the MPU of the microcomputer block 30 creates the management information necessary for reproducing the recorded data and recognizes the data recording end command,
The created management information is sent to the data processing unit 1003. As a result, the management information is recorded on the disc. Therefore, when the encoding is being performed, the MPU of the microcomputer block 30 receives information in units of data (division information or the like) from the encoder unit 50. Also, the MPU of the microcomputer block 30 recognizes the management information (file system) read from the disc at the start of recording, recognizes the unrecorded area of the disc, and determines the data recording area as the data processor unit 100.
It is set to the disk through 3. Further, the MPU of the microcomputer block 30 is
Various management information read from the disc can be analyzed and recognized, and control such as initial setting of the decoder 60, copy inhibition, and permission can be performed.

The recording medium described above roughly includes management information and content information (information such as video and audio) as information for recording and reproduction. Then, the recording areas of the information related to copy protection are secured in the management information and the content information, respectively.

Information relating to copy protection is also present on the information recording / reproducing apparatus side and is present as unique device key information A and B in the encryption / decryption units 2002 and 1002, respectively. The unique device key information A and B are basically unique key information of this information recording / reproducing apparatus, and A and B are exactly the same.

Next, the features of the present invention will be briefly described.

According to the present invention, when copying or moving data between a hard disk and an optical disk (DVD), if the data is copy-limited, the copying or moving can be stopped.

Further, in the recording / reproducing apparatus having a plurality of disk drives, the following functions can be obtained when dubbing between the drives.

That is, if the data is copy-free, "
Allow both "copy" and "move", prohibit "copy" if the data is copy prohibited, and allow only "move". Furthermore, if the data is copy prohibited, do not copy between drives. In order to do this, prepare a "copy information management file" for each of multiple disks or drives,
The copy restriction information of each data (title) is collectively managed. Also, even if the user tries to copy, if the data is prohibited in the "copy information management file", the copy operation is not executed.

When data is copied from a disk or drive that does not have a "copy information management file" to another drive, the copy information stored in the management information at the beginning of the data unit is checked. Then
If copying is prohibited, copying is immediately stopped. In addition, if a part of the copy has already been made, the copied part can be deleted from the receiving disk.

Further, if necessary, it is possible to newly create a "copy information management file" in the disc on the sending side and describe that the above data is copy prohibited.

Further, even when the "copy information management file" exists in the disc, when the copy is executed, the copy information stored in the management information at the head of the data unit is checked, and if the copy is prohibited, the copy is immediately performed. To cancel. If it has already been partially copied, delete it from the receiving disk. In addition, it is described in the "copy information management file" on the sending side that the above data is prohibited.

Further, the present invention has a function of prohibiting the movement process even when the copy-prohibited data is "moved" when the sending side is a removable disk.

The basic idea of the present invention is as follows.

Hard Disk (HDD) and DVD-
A "copy information management file" is prepared on the RAM disk or can be additionally written by the device.

In this file, copy information about all existing data (title) can be described. Then, when new data (title) is recorded, the copy information is added to the “copy information management file”.

When data (title) dubbing is performed, the file is always referred to by the device. If the data is copy-free, dubbing is possible, and the copy information is added to the destination "copy information management file". On the contrary, if the title for which data dubbing is performed is copy-prohibited (copy never) data, "copy" is not performed.

When a DVD-RAM disk (for example, recorded by another company's machine) having no "copy information management file" is inserted, the following function can be obtained.

1) When executing the data copy from the hard disk to the DVD-RAM, refer to the "copy information management file" of the hard disk. If the data of the transmission source (HDD) is copy-free, the copy processing is executed, and after the copy processing, the transmission destination (DVD-R
In "AM), a" copy information management file "is newly created as necessary and the copy information is described.

However, if the data of the transmission source (HDD) is copy-prohibited (copy never) data, copying is not performed.

2) When data is copied from the DVD-RAM to the HD, the copy information stored in the management information (RDI pack or CTL pack) at the beginning of the data unit is monitored while executing dubbing. To do. Then, as a result of this monitoring, if the copy prohibition (copy never) is not detected in all the management information, the copy is successful. Then, the copy information is added to the “copy information management file” of the destination (HDD). In addition, a "copy information management file" is newly created in the sender (DVD-RAM) as necessary, and copy information regarding data is described.

However, if the copy inhibition (copy never) is detected, the copy process is stopped. At this time, the destination (H
If it is partially dubbed in DD), it can be deleted. In addition, a "copy information management file" is newly created in the transmission source (DVD-RAM) as necessary, and copy information (copy never) of this data is described.

Next, the function and configuration of each part of the present invention will be specifically described.

The recording medium handled by the device of the present invention may be a DVD-ROM, a DVD-RW, a DVD-R, or a large capacity memory. It may also be a composite memory chip.

FIG. 2 shows a root directory which is one of the features of the present invention. That is, in the present invention, the copy information management file is further installed as a part of the root directory.

In the DVD, there are directories for each standard, and these directory names are referred to as "VIDEO_TS" in the DVD-video and in the DVD-audio.
"AAUDIO_TS", in RTR-DVD, "DV
D_RTR ”. In FIG. 2, the directory structure of a real-time recording (may be video recording) DVD (RTR_DVD) of the DVD system and the audio title set file (AUDIO_
Directory structure of TS, title set information (T
The directory structure of S_INFO) and the title set thumbnail (TS_THUMB) are shown. Recorded data exists in each directory.

In the directory "DVD_RTR",
RTR. IFO (information for managing disc information) file, and RTR_MOV. VRO (Mubi video file) and RTR_STO. VRO (still picture video file) and RTR_STA. VRO
(Still picture audio file) exists.

RTR. Navigation data is recorded in the IFO file, and this navigation data is data for advancing a program set, a program, an entry point, a playlist, and the like.

VR_MOV. The VRO file is a so-called movie AV file for recording a movie video object (movie VOB). RTR_S
TO. VRO is a file for recording a still picture video. RTR_STA. VRO is a file for recording still picture audio added to still pictures.

The directory “AUDIO_TS.IF
Audio manager information (AMGI) in "O"
AUDIO_TS. IFO, audio manager information (AMGI) AUDIO_TS. BUP, ATS_0 as audio title set information (ATSI) file
1. IFO, audio title set, ATS_01.as an (ATS) audio object file.
There is an AOB.

VR_MANAGER. Navigation data is recorded in the IFO file, and this navigation data is data for advancing a program set, a program, an entry point, a playlist, and the like.

VR_MOVIE. The VRO file is a so-called movie AV file for recording a movie video object (movie VOB).

VR_STILL. VRO is a still picture AV file for recording a still picture VOB. The above RTR may be replaced with VR (video recording).

In the present invention, TS_INFO is provided in the copy information management (CPOY.IF).
O) The file has been built.

FIG. 3 shows the encryption / decryption unit 200.
2 and 1002 and the track buffer 1100 of the data processor unit 1003.

The encryption / decryption units 2002 and 1002 are
The contents (AV data part, SP data other part) are encrypted and decrypted. The management information is not encrypted.

Now, the case where the recording data is recorded on the hard disk or the optical disk will be described. The record data is input to the track buffer 1100 of the data processor 1003 and given to the encryption / decryption unit 2002 or 1002. If the recorded data is the target of copy prohibition here,
The encryption / decryption unit 2002 or 1002 performs an encryption process using a scramble key (created using a device key), and the encrypted data is recorded on a hard disk or an optical disk.

Next, the case where the encrypted data recorded on the hard disk or the optical disk is reproduced will be described. The data read from the hard disk or the optical disk is subjected to a decryption process using a scramble key (created using a device key) in the encryption / decryption unit 2002 or 1001, and the data processor unit 1003. Are taken into the track buffer 1100.

Here, the hard disk side encryption / decryption unit 2002 employs a CSS (content scramble system), creates a scramble key based on this, and performs scramble and descramble. The optical disk side encryption / decryption unit 1002 employs a CPRM (copyright management) system, creates a scramble key based on this, and performs scrambling and descrambling.

FIG. 3 shows an example of the data structure of unique device keys A and B which are key information used for encryption / decryption. These are keys that are unique to each recording / reproducing apparatus, and are encrypted according to a certain rule at the time of manufacture and stored in the storage unit. First, as a data block, a device key serial number in an unencrypted state and its I
Storage block 81 in which D is described and RA in encrypted state
There are an M device key storage block 82 and an encrypted hard disk device key storage block 83. These encrypted device keys are unique keys for each recording / reproducing apparatus, and are encrypted according to a certain rule at the time of manufacture and stored in the storage unit.

FIGS. 4 to 7 show the operation / non-operation of the encryption / decryption units 2002 and 1002 when copying and moving are realized.

The example of FIG. 4 shows a state of copying or moving data from a hard disk to an optical disk (DVD-RAM). In this case, the data copy information indicates copy-free. The determination of the copy information is performed in the microcomputer block 30, and the operation form of the encryption / decryption unit is determined based on the result. In this case, the encryption / decryption unit 200
2. Both the encryption / decryption unit 1002 is in the data through state.

The example of FIG. 5 is a case where the data copy information indicates copy prohibition. It shows a state of data transfer processing from the hard disk to the optical disk. In this case, the descrambling process is executed in the encryption / decryption unit 2002, and the scramble process is executed in the encryption / decryption unit 1002.

The example of FIG. 6 is a case where the data copy information indicates copy free. It shows a state of data transfer processing from the optical disk to the hard disk. In this case, both the encryption / decryption unit 2002 and the encryption / decryption unit 1002 are in the data through state.

The example of FIG. 7 is a case where the data copy information indicates copy prohibition. It shows a state of data transfer processing from the optical disk to the hard disk. In this case, the encryption / decryption unit 1002 executes the descramble process, and the encryption / decryption unit 2002 executes the scramble process.

FIG. 8 shows the route (ROO according to the present invention.
T) shows an example of the contents of a copy information management file provided as part of the directory.

Title copy information (TITLE COP
Y information), original copy title (CPY_ORG_TITLE # 1, # 2, # 3,
...,) table, user-defined copy title (CPY
_UD_TITLE # 1, # 2, # 3, ...) Table.

The area of the title copy information is the number of original titles (ORG_TITLE_N) indicating the number of original titles which are externally recorded titles.
s), the number of user-defined titles (UD_TITLE_Ns) created by the user by editing or the like, and the description area of the reserved area.

Original copy title (CPY_OR
G_TITLE # 1, # 2, # 3, ...,) User-defined copy title, (CPY_ORG_TITLE # 1, #
The contents of 2, # 3, ..., Are copy protection information (CPY_PROTECT), thumbnail number (TUM_NO), and reservation.

Copy protection information (CPY_PR
OTECT) is “11111111b”, it means that the corresponding title is copy-protected,
When it is "00000000b", it means that the copy is free. This copy information file exists in the root directory of the hard disk and the optical disc based on the media standard for handling recordable and reproducible media.

The contents of the above copy information file are first read by the microcomputer block 30. For this purpose, the microcomputer block 30
When a title is selected in the copy mode or the move mode, it is recognized whether the title is copy-protected or copy-free.

9 and 10 show examples of screens displayed on the display when the apparatus of the present invention is operated. This is an example of a case where a dubbing process from an optical disk (DVD-RAM) to a hard disk is executed.

FIG. 9 shows a state in which thumbnails, which are representative images of titles 001, 002, and 002, recorded on the optical disk are displayed on the screen 301. An example in which the thumbnail of title 001 is designated is shown. In the device of the present invention, as described above, there is information as to whether the title is the original title or the user-defined title. Further, according to the DVD recording standard, the creation date of the title, the recording time, etc. are recorded when the title is created. Therefore, next to the thumbnail image of each title, information such as its creation date, recording time, and original is displayed.

When an arbitrary title is designated (executed by inserting a title number with a remote controller key or by a designation operation with a cursor), the surrounding area is, for example, a frame 331.
It is surrounded by. As this display form, various forms are possible, and the display color may be changed. In the case of the title 003, a copy mark 332 is further displayed, and an X mark is superimposed on the copy mark 332. This means that the title 003 is copy prohibited.

The screen 302 is a screen when the thumbnail of title 001 is selected and an enter operation is performed. In this case, the thumbnail of the title 001 is enlarged and displayed next to it, the note area 332 when "copy" is executed and the note area 333 when "move" is executed. In addition, the direction of copying or moving the data is also shown (in this example, it is displayed as RAM → HDD). Furthermore, a display area section 3 showing the state of change in the data amount when copying or moving is executed.
34 is also displayed.

FIG. 10 shows a state in which thumbnails, which are representative images of titles 001, 002, and 002, recorded on the optical disk are displayed on the screen 301. An example in which the thumbnail of title 001 is designated is shown.

In the case of title 003, copy mark 3
32 is displayed, and an X mark is overlapped and displayed on it.
Now, it is shown that the title 003 is selected as a dubbing target.

The screen 302 is a screen when the thumbnail of the title 003 is selected and the enter operation is performed. In this case, the thumbnail of title 003 is enlarged and displayed. Further, only the cautionary note region 333 when "dubbing" is executed beside it. This display is, for example, "move (the copy source will be deleted) RAM
→ HDD ”is displayed. This is title 00
This is because copy is prohibited for item 3. Further, a display area portion 334 showing a state of change in the data amount when the movement is executed is also displayed.

Next, A according to the DVD recording standard
The V (audio video) data structure will be briefly described.

FIG. 11 shows RTR_MOV. The file structure of VRO is shown.

Video files have a hierarchical structure. One file is composed of a plurality of VOBs (video objects), one VOB is composed of a plurality of VOBUs (video object units), and one VOBU is composed of
It consists of multiple packs. As a plurality of packs, (RDI or CTL) pack as control information is VOBU
Exists at the beginning of the, and V pack, A pack, etc. also exist.

The V pack is obtained by compressing video data by the MPEG2 system, and is composed of a pack header, a packet header and a video data section. In the A pack, audio data is, for example, linear PCM or MPEG,
Alternatively, it is processed by a method such as AC3 and is composed of a pack header, a packet header, and an audio data section.

FIG. 12 shows the data structure of the above CTL pack, and the pack header, system header, packet header, substream data, and control data are arranged from the beginning.

A packet start code and the like are described in the packet. A header start code, stream ID, etc. are described in the system header.
Further, in the packet header, a packet header, a stream ID, a presentation time stamp, etc. are described.

FIG. 13 shows the contents of the control data. The control data includes general information (CTL_GI), display control information_copy control information (DCI_CCI), and manufacturer information (MNFI). In the general information, the start presentation time stamp of the corresponding VOBU and the corresponding VOBU
The recording date / time and time information of are present. Further, in the display control information_copy control information (DCI_CCI), DC
Information on the status of I and CCI, concrete display control information (DCI), and copy control information (CCI) exist.

As described above, the display control information and the copy control information (DCI_CCI) are the DCI status (DCI_SS) and CCI status (CCI_S).
S) is included.

When DCI_SS is "00b", it indicates that valid aspect ratio information does not exist in DCI, and when it is "01b", only valid aspect ratio information exists in DCI. , "11" indicates that effective aspect ratio information, subtitle mode information, and film camera mode information are present in the DCI.

As shown in FIG. 14, CCI_SS is
"000" means that there is no valid copy control information in the CCI, "001" means that only source information does not exist, and "010" means APS. (Analog protection) Means that only information exists, and when "011", it is a valid AP.
Only S information and source information exist, when "100", only valid CGMS (copy generation management system) information exists, and when "101", only valid CGMS and source information exist. "11
When it is “0”, it means that only valid CGMS and APS information exist, and when it is “111”, it means that only valid CGMS, APS information and source information exist.

FIG. 15 more specifically shows the contents of the above DCI. Display Control Information (DCI) is
Corresponding video aspect ratio information: 4 bits, subtitle (subtitle) information: 2 bits, reservation: 1 bit, film camera mode: 1 bit.

When the video aspect ratio is 4: 3, 000
It is 0001 when 0, 16: 9. When the source is letterbox, values other than 0000 and 0001 are used, and the encoded video is 4: 3. Regarding subtitle information, it is 01 when the subtitle is located inside the image and 10 when the subtitle is located outside the image. The film camera mode information is 1 in the camera mode and 0 in the film mode.

FIG. 16A shows the contents of the copy control information CCI. Copy Generation Management System (CGMS) information
2 bits and analog copy system table (APS
TB) information is included.

FIG. 16B shows the contents of CGMS. "00" indicates that copying is permitted without restriction, "01" and "10" indicate that the condition is not used, and "11" indicates that no more copying is possible. Indicates that it is not permitted (copy prohibited).

FIG. 16C shows the contents of APSTB. When "00", APS is off (no protection is applied), when "01", APS type 1 is applied, and "1"
A value of "0" indicates that APS type 2 is applied, and a value of "11" indicates that APS type 3 is applied.

As described above, the DVD standard includes restriction information regarding copying. It also contains information on whether scrambling is performed.

Therefore, when the microcomputer block 30 determines and recognizes this restriction information and records the information on the hard disk or the optical disk according to the content, the encryption / decryption units 2002 and 1002
It will be decided whether or not to perform the encryption process. CG
If the MS indicates that copying is prohibited, for example, recording is performed only on the hard disk, and in this case, scrambling is performed. The recording on the optical disk is not performed. Alternatively, when the CGMS indicates that copying is prohibited, recording on a hard disk or an optical disk is prohibited and only reproduction is possible.

When APSTB indicates that analog scrambling is applied, recording on the hard disk or optical disk is prohibited, and only reproduction is possible. Alternatively, recording can be performed only on the hard disk, and in this case, the encryption / decryption unit 2002 has a measure of performing scrambling and recording.

FIG. 17 also shows the recording positions of encrypted and non-encrypted information existing in the content information. The encryption / non-encryption here means the encryption / non-encryption of the content in the packet.

FIG. 17 shows the contents of packet headers included in each of the video pack, audio pack and sub-picture pack. The pack has a pack header. A system clock reference is described in the pack header, is compared with the system clock in the device, and is used as timing information handled in pack units in the device. A packet header is present after the pack header, and then video data, audio data, or sub-picture data is present. The pack header and packet header parts are not encrypted. However, it is possible to determine whether the video, audio, or sub-picture data compressed by the MPEG system is encrypted or non-encrypted according to the PES scrambling control information included in the packet header.

[0121] The packet header describes a packet start code, a video stream, an audio stream, and a stream ID which is identification information of the sub-picture stream. Also, in the packet header, PES (packet elementary stream) scrambling control information (basically indicating whether or not scrambled), copyright information, and information indicating whether it is an original or a copy can be arranged. Has become. Furthermore, the playback output can be streamed to the associated stream (video, audio,
Presentation time information (time stamp) for synchronously outputting sub-pictures is described.

Therefore, the microcomputer block 30 of the information recording / reproducing apparatus analyzes and recognizes the above PES scrambling control information, and the encryption / decryption unit 1
At 002 it can be decided whether to scramble or descramble.

FIG. 18 shows the relationship between management information and video objects in the DVD recording standard.

Here, a program chain (PGC) for managing the data reproduction order is defined. A cell (Cell) is defined in the program chain (PGC), and video object information (VOBI) that is information of a video object (VOB) to be played back is defined in the cell (Cell). . PGC
Is a program chain information (PGCI) part. There are two types of PGCI, one is the original PGCI (ORG_PGC
I) and the other is a user-defined PGC table (UD_PGCIT).

In the VOBI, the time map (TMA
P) is described, and this TMAP can specify the VOBU that constitutes the VOB corresponding to the VOBI. The link from the cell to the VOBI is specified by the logical address. Further, the TMAP information is linked to the VOB and the VOBU based on the stream number of the VOB, the number of VOBUs in this VOB, the entry number for each VOBU, and the logical address to each target VOBU.

The VMG includes a video manager information management table (VMGI_MAT). Here, as disc content management data,
Various management information is described starting with the video manager identifier (VMG_ID). For example, the end address of the video manager, which is the entire management information, the end address of the video manager information, which is a part of the management information, the resume mark information (information indicating the position to restart after interruption), the disc representative image information (representative image) Information indicating the playback position of), the original program chain (O
The start address of RG_PGCIT) (chain indicating the playback order of contents), the start address of the user-defined program chain (UD_PGCIT) (chain indicating the playback order of contents set by the user), and the writing position of the manufacturer information (MFIT) The start address and the like shown are described next, and the characteristic operation of the apparatus of the present invention will be described with reference to a flowchart.

FIG. 19 is a diagram showing a data processing flow for obtaining the display state described with reference to FIGS.

When the dubbing mode is set, the microcomputer block 30 reads thumbnail data from the thumbnail data file from the copy source disk and displays the thumbnail on the display (steps A00, A01, A02). Next, the copy management file is read. If the title is copy prohibition, the microcomputer block displays a copy prohibition mark (steps A04, A05). When the thumbnails are displayed, it is checked whether or not the number displayed on the display is the maximum, and the entire titles are displayed (steps A06 and A07).

Next, it is judged whether or not the title is selected (step A08), and if the title is selected, the screen is switched to the dubbing screen (step A0).
9). This dubbing screen is the lower screen shown in FIGS. 9 and 10.

Here, it is judged whether or not the copy-prohibited title is selected, and if the copy-prohibited title is selected, "move" is displayed so that only "move" is performed as an option. To do. If the title of copy prohibition is not selected, “copy” is displayed as an option, or both “copy” and “move” are displayed (steps A11, A12, A13).

FIG. 20 shows a processing flow when a title is copied from the hard disk to the optical disk or vice versa. The copy source file system and copy destination file system are ticked,
It is ticked whether there is a recorded file at the copy source and whether there is an unrecorded area at the copy destination (step B1.
1-B14). When an error occurs, the warning that the error has occurred in the file system is displayed on the display unit (step B15).

If there is no error, the copy source VMG
Phi is read by computer block 30, VR
The start address and end address of the O file are retrieved from the file system (steps B16, B1).
7).

Next, from the program chain information (PGC) in the VMG, the start address of the cell in the title,
The end address is acquired (step B18). The data of the copy source is read into the temporary storage unit (step B1.
9) Then, it is checked whether or not the temporary storage portion exceeds a predetermined data amount (step B20). When the amount of data exceeds the predetermined amount, a process of writing the data in the temporary storage unit to the copy destination is executed (step B2).
1).

When the temporary storage unit does not exceed the predetermined data amount, the data (cell) from the copy source continues.
Is read. If the cell reading is not completed, the process returns to step B18 (step B2
2) If the cell reading is completed, the process of writing the data in the temporary storage unit to the copy destination is executed (step B23).

Next, in step B24, a tick is made as to whether or not the processing has been completed for all cells. If not, the process returns to step B18,
If completed, the contents of the VMG file of the copy destination are updated (step B25), and the copy information is added to the copy information management file of the copy destination (step B2).
6). Next, the thumbnail data is added to the copy destination thumbnail data file (step B27), a predetermined display is performed, and the process is ended.

FIG. 21 shows the processing flow when the title is moved from the hard disk to the optical disk or vice versa. The same steps as those used when the copying process is performed are designated by the same reference numerals as those in FIG.

The part different from FIG. 20 is the step executed after step B18.

The source data is read into the temporary storage unit (step B19-1), and it is checked whether the temporary storage unit exceeds a predetermined data amount (step B20). When the specified data amount is exceeded,
A process of writing the data in the temporary storage unit to the destination is executed (step B21-1). When the temporary storage portion does not exceed the predetermined data amount, data (cell reading) from the copy source is subsequently performed. If the cell reading is not completed, the process returns to step B18,
If the reading of the cells is completed, the process of writing the data in the temporary storage unit to the moving copy destination is executed (steps B22 and B23-1).

When all the cells of the title are completed, the VMG of the move destination is updated and the copy information is added to the copy information management file of the move destination (steps B25-1, B26-). 1). Further, the thumbnail data is added to the destination thumbnail data file (step B27-1). Next source VMG
Update the management file, delete the copy information corresponding to the moved title from the move source copy information management file,
The process of deleting the thumbnail data of the moved title from the source thumbnail data file is performed, and the process ends (steps B28-B31).

FIG. 22 shows in detail the processing in step B19 of FIG. 20 (processing of reading data from the copy source to the temporary storage section). That is, when reading the data of the copy source into the temporary storage unit, the data processing unit outputs a read request for m sectors to the disk drive unit of the copy source. Next, a transfer controller is set in the data encryption / decryption unit. Next, the data encryption / decryption unit on the transfer source side switches to the "passive (through)" mode. As a result, the encryption / decryption unit is bypassed. Next, the transfer start instruction is activated.
As a result, the disk drive unit to the data processing unit 10
The data transfer to 03 is started, and the data is stored in the temporary storage unit 1004. Next, it is judged whether or not the transfer for m sectors is completed, and if completed, the process is ended.

FIG. 23 shows steps B21 and B2 of FIG.
The processing in 3 (writing processing of data from the temporary storage unit to the copy destination) is shown in detail. Data processing unit 10
03 issues an n-sector write request to the copy destination disk drive unit. The data encryption / decryption unit sets the transfer controller. Further, the data encryption / decryption unit on the transfer destination side switches to the "passive" mode. As a result, the encryption / decryption unit is bypassed.

Next, the transfer start instruction is activated. As a result, data transfer is started and the data in the temporary storage unit 1004 is recorded in the copy destination. Next, it is determined whether the transfer (writing) for n sectors has been completed.
If it has been completed, it is judged whether all the data in the temporary storage unit has been written, and if all the data has been written, the process ends.

FIG. 24 shows in detail the processing in step B19-1 of FIG. 21 (processing of reading data from the movement source to the temporary storage section). The data processing unit outputs a read request for m sectors to the source disk drive unit. Next, a transfer controller is set in the data encryption / decryption unit. Next, the encryption / decryption unit
“Passive” when transferring copy-free data
The mode is switched to the "active" mode when transferring the copy inhibition data. Next, the transfer start instruction is activated. As a result, data transfer from the disk drive unit to the data processing unit 1003 is started, and the data is stored in the temporary storage unit 1004.
Next, it is judged whether or not the transfer for m sectors is completed, and if completed, the process is ended.

FIG. 25 shows steps B21-1,
The processing in B23-1 (processing of writing data from the temporary storage unit to the copy destination) is shown in detail. The data processing unit 1003 issues a write request of n sectors to the copy destination disk drive unit. The data encryption / decryption unit sets the transfer controller. Further, the data encryption / decryption unit on the transfer destination side switches to the "passive" mode or the "active" mode. This is switched to any one according to the content of the copy information. Next, the transfer start instruction is activated. As a result, data transfer is started and the data in the temporary storage unit 1004 is recorded in the copy destination. Next, it is determined whether the transfer (writing) for n sectors has been completed. If it has been completed, it is judged whether all the data in the temporary storage unit has been written, and if all the data has been written, the process ends.

FIG. 26 is a block diagram showing the internal functions of the data encryption / decryption units 2002 and 1002 and the data processing unit 1003 described above.

Data encryption / decryption units 2002 and 100
Since 2 has the same configuration, one encryption / decryption unit 20
Only 02 will be described. As an interface, an ATAPI / ATA interface 2101
And MPU interface 2102. ATAP
The I / ATA interface 2101 is for exchanging data with the corresponding disk drive unit, and the MPU interface 2102 is for exchanging data with the microcomputer block 30. Data encryption / decryption unit 2
The data analysis unit 2103 in the control pack (CTL (or RDI) pack) is further included in 002, and the contents of the copy information can be analyzed. The transfer controller 2104 and the switching unit 2105 are controlled according to the content of this copy information. In accordance with the control result, the decryption / encryption unit 2106 determines the operation mode of the decryption processing of the read data and the write data, and the encryption processing.

The data processing unit 1003 has an interface 1101 for the encryption / decryption unit 2002 and an interface 1102 for the encryption / decryption unit 1002.
Have. Also, an MPU interface 1103 for exchanging control data (commands) with the microcomputer block 30, an interface 1104 for the encoder unit 50, an interface unit 1105 for the decoder unit 60, a temporary storage unit 1004.
Interface 1106 to. These interfaces are connected to the data stream control unit 1107. The data stream control unit 1107
By a command from the microcomputer block 30,
The transfer destination of data and the read destination of data can be set.

As described above, according to the present invention, it is possible to easily set the data copy and / or move processing based on the content of the copy information based on the copy information management file when performing dubbing. Also, based on the contents of the copy information in the control pack, VOBU
It is also possible to perform detailed processing such as copying and moving in units.

In the apparatus of the present invention, if the first VOBU in one title is copy-protected, all the titles may be copy-protected. Further, even if a copy-free title has a copy-prohibited VOBU in a part thereof, only that VOBU may be processed as a move.

The present invention is not limited to the above embodiment. The present invention can deal with the case where the copy source or copy destination medium does not have the copy information management file as described in FIG.

FIG. 27 is an operation flow of a program executed when a display screen as shown in FIG. 9 or 10 is obtained when there is no copy information management file. When the apparatus is set to the dubbing mode, the thumbnail data of the title recorded on the copy source or transfer source disc is created (step H1). Then, the thumbnail is displayed on the display (step H2), and the thumbnail data is written to the thumbnail data file (step H3). The thumbnail on the display is ticked to see if it is the maximum (step H4), and after displaying the entire title (step H5), waits for the title selection command to be given (step H6). When the title is selected, the screen switches to the dubbing screen (step H
7). Also, the precautionary notes, “copy” and “move” are displayed on the display as options.

FIG. 28 is a flow chart when the copy processing is executed when there is no copy information management file as the directory of the copy source or transfer source disk.

A processing flow for copying a title from a hard disk to an optical disk or vice versa is shown. The copy source file system and the copy destination file system are ticked, and it is ticked whether or not there is a recorded file in the copy source and whether or not there is an unrecorded area in the copy destination (steps J11-J1).
4). When an error occurs, the warning that the error has occurred in the file system is displayed on the display unit (step J15).

If there is no error, the copy source VMG
Phi is read by computer block 30, VR
The start address and end address of the O file are fetched from the file system (steps J16, J1).
7).

Next, from the program chain information (PGC) in the VMG, the start address of the cell in the title,
The end address is acquired (step J18). The data of the copy source is read into the temporary storage unit (step J1
9)

Next, it is judged from the management information whether or not the copy source data is copy prohibited, and if it is not copy prohibited (copy free), then it is checked whether the temporary storage portion exceeds a predetermined data amount. (Step J22). When the amount of data exceeds the predetermined amount, a process of writing the data in the temporary storage unit to the copy destination is executed (step J21).

When the temporary storage portion does not exceed the predetermined data amount, data (cell reading) from the copy source is subsequently performed (steps J22 and J23).
If the reading of the cells is completed, the process of writing the data in the temporary storage unit to the copy destination is executed (step J2).
6).

Next, at step J27, a tick is made as to whether or not the processing has been completed for all cells. If not completed, then the processing returns to step J18,
If completed, the contents of the copy destination VMG file are updated (step J28), and copy information is added to the copy destination copy information management file (step J2).
9). Next, the thumbnail data is added to the thumbnail data file of the copy destination (step J30), a predetermined display is performed, and the process ends.

When copy prohibition data is detected at the previous step J20, a copy information management file is created at the copy source, and "copy prohibition" information is added to the title identification information (step J24). And
A display such as "Title for which copying is prohibited" is displayed on the display (step J25).

FIG. 29 shows the case where the copy information management file does not exist as the directory of the copy source or transfer source disk, and the title is moved from the hard disk to the optical disk or vice versa. The processing flow is shown. The same steps as those used when the copying process is performed are designated by the same reference numerals as those in FIG.

The part different from FIG. 20 is the step executed after step J18.

The source data is read into the temporary storage unit (step J19-1). Next, it is judged from the analysis of the management information whether the copy information has changed.

Next, it is checked whether or not the temporary storage portion exceeds the predetermined data amount (step J2).
0).

When the amount of data exceeds the predetermined amount, a process of writing the data in the temporary storage unit to the destination is executed (step J21-1). When the temporary storage unit does not exceed the predetermined data amount, data (cell reading) from the source is subsequently performed. If the cell reading is not completed, the process returns to step J19-1, but if the cell reading is completed, the process of writing the data in the temporary storage unit to the destination is executed (steps J23, J26-). 1).

When all the cells of the title are completed, the VMG of the move destination is updated and the copy information is added to the copy information management file of the move destination (steps J27, J28-1). .

Further, during the movement, it is judged whether or not the copy information has changed (step J40). If the copy information has changed, the process moves to step J30-1, and if there is no change, the process moves to step J30-1 via step J29-1.

At Step J29-1, copy information (changed) is added to the copy information management file at the move destination. At Step J30-1, the thumbnail data is added to the thumbnail data file of the moving destination. Then, the source VMG file is updated (step J41), the thumbnail data of the moved title is deleted from the source thumbnail data file, and normal termination is displayed (step J42).

FIG. 30 shows the details of step J19 in FIG.

When the copy source data is read into the temporary storage section, when the copy source data is read into the temporary storage section, the data processing section issues a read request for m sectors to the copy source disk drive section. Output. Next, a transfer controller is set in the data encryption / decryption unit. Next, in the data encryption / decryption unit on the transfer source side,
Switching takes place in "passive" mode. As a result, the encryption / decryption unit is bypassed. Next, the transfer start instruction is activated. As a result, data transfer from the disk drive unit to the data processing unit 1003 is started, and the data is stored in the temporary storage unit 1004. Next, it is determined whether or not the transfer of m sectors is completed, and if completed, it is determined whether or not the copy inhibition data is detected (detected by the control pack analysis unit). If no copy-prohibited data is detected, the process ends. If it is detected, the copy-prohibited data flag is turned on and the process ends.

FIG. 31 shows details of step J19-1 in FIG.

The data processing unit 1003 issues a write request of n sectors to the copy destination disk drive unit. The data encryption / decryption unit sets the transfer controller.
Next, it is determined whether or not the copy information change flag is "ON". The initial values of the copy information change flag and the copy prohibition flag are “off”.

When the copy information conversion flag is "ON", it is determined whether the copy-free status is changed to the copy-disabled status. If it has changed from copy-free to copy-prohibited, the copy-prohibited data flag is turned "on", and otherwise, the copy-prohibited data flag is turned "off". Next, the copy information change flag is set to "OFF", and the process proceeds to step.

In the next step, it is determined whether or not the copy inhibition data flag is "on". If the copy prohibited data flag is "ON", the data encryption / decryption unit is set to the active mode, and if not, the data encryption / decryption unit is set to the passive mode. That is, the encryption / decryption unit is controlled to be switched to the active / passive mode according to the content of the copy information.

Next, the data encryption / decryption unit is activated by the transfer start command. As a result, data transfer is started and the data in the temporary storage unit 1004 is recorded in the destination. Next, it is determined whether transfer (writing) for m sectors is completed. If it has been completed, a tick indicating whether or not the copy information has changed (a tick by the control pack analysis unit) is performed. If there is no change in the copy information, the process ends. If there is a change in the copy information, the write pointer in the temporary storage unit is returned to the position before the sector where the copy information has changed, and the copy information change flag is set to "ON". finish. The next data read will be
It starts from the sector where the copy information has changed.

FIG. 32 shows details of step J26-1 in FIG. First, it is determined whether or not the copy inhibition data flag is "on". If “ON”, the data encryption / decryption unit is switched to the active mode, and if “OFF”, the data encryption / decryption unit is switched to the passive mode.

Then, a write request command for n sectors is issued to the destination drive unit. Next, in the data encryption / decryption unit, the transfer controller is set. Then, a transfer start command is issued. As a result, data transfer is started and the data in the temporary storage unit is recorded on the destination disk. Next, it is determined whether or not the transfer of n sectors is completed. If completed, it is determined whether or not all the data in the temporary storage unit has been written. These ticks and instructions are executed by the software of microcomputer block 30.

[0177]

As described above, according to the present invention, it is easy to understand how data (title) is moved or copied, and the data (title) in the recording medium is restricted from being copied or moved. It is possible to make it easier to understand the state in which the copy information is present and to perform dubbing corresponding to the contents of the copy information.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an information recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a root directory according to the present invention.

FIG. 3 is an explanatory view showing an encryption / decryption unit according to the present invention as extracted.

FIG. 4 is an explanatory diagram shown for explaining an operation at the time of copying data and moving data by the device of the present invention.

FIG. 5 is an explanatory diagram shown for explaining an operation at the time of moving data by the device of the present invention.

FIG. 6 is an explanatory diagram shown for explaining the operations at the time of copying data and moving data by the device of the present invention.

FIG. 7 is an explanatory view shown for explaining an operation at the time of moving data by the device of the present invention.

FIG. 8 is an explanatory diagram showing a data structure of a copy information management file in a root directory according to the present invention.

FIG. 9 is an explanatory diagram for explaining the operation of the device of the present invention by showing a screen.

FIG. 10 is an explanatory diagram for explaining the operation of the device of the present invention by showing a screen.

FIG. 11 is an explanatory diagram showing a data structure of content according to the DVD standard according to the present invention.

FIG. 12 is an explanatory diagram showing a data arrangement configuration of a control pack.

FIG. 13 is an explanatory diagram showing in detail the data structure in the control pack.

FIG. 14 is an explanatory diagram showing copy control information status information in a control pack.

FIG. 15 is an explanatory diagram showing data contents of display control information in a control pack.

FIG. 16 is an explanatory diagram showing data contents of copy control information in a control pack.

FIG. 17 is an explanatory diagram showing the contents of a packet header in a pack, which is data handled by the device of the present invention.

FIG. 18 is an explanatory diagram showing the relationship between management information and video objects in the DVD standard according to the present invention.

FIG. 19 is a diagram showing a flow for controlling the display content displayed on the screen when dubbing is performed in the device of the present invention.

FIG. 20 is a flowchart shown to explain the operation when a title copy process is performed in the device of the present invention.

FIG. 21 is a flowchart shown for explaining the operation when the title moving process is performed in the device of the present invention.

22 is an explanatory diagram showing a part of the flow of FIG. 20 (step B19) in detail.

23 is an explanatory diagram showing a part of the flow of FIG. 21 (step B21) in detail.

FIG. 24 is a part of the flow of FIG. 21 (step B19-
Explanatory drawing which shows 1) in detail.

FIG. 25 is a part of the flow of FIG. 21 (step B21-
Explanatory drawing which shows 1) in detail.

FIG. 26 is an explanatory diagram specifically showing the internal configurations of the data encryption / decryption unit and the data processing unit of FIG. 1.

FIG. 27 is a diagram showing a flow for controlling the display content displayed on the screen when dubbing is performed when there is no copy information management file on the disc in the device of the present invention.

FIG. 28 is a flowchart shown for explaining the operation in the case where the title copy process is performed when the disc does not have a copy information management file in the apparatus of the present invention.

FIG. 29 is a flowchart shown for explaining the operation in the case where the title moving process is performed when the disc of the present invention does not have a copy information management file.

FIG. 30 is an explanatory diagram showing a part of the flow of FIG. 28 (step J19) in detail.

FIG. 31 is a part of the flow of FIG. 29 (step J19-
Explanatory drawing which shows 1) in detail.

FIG. 32 is a part of the flow of FIG. 29 (step J21-
Explanatory drawing which shows 1) in detail.

[Explanation of symbols]

30 ... Microcomputer block, 41 ... A / V tuner section, 42 ... TV tuner section, 50 ... Encoder section, 60 ... Decoder section, 1001, 2001 drive section, 1002, 2002 ... Encryption / decryption section, 1003
... data processor section, 1004 ... temporary storage section.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 5/765 H04N 5/85 Z 5/781 5/781 510F 5/85 510L 5/91 5/91 P 5/92 5/92 H (72) Inventor Takahiro Kiyota 1-3-3 Shinmachi, Ome-shi, Tokyo In-house F-term Toshiba Digital Media Engineering Co., Ltd. (reference) 5C052 AA02 AA04 AB03 AB04 DD04 DD08 EE03 5C053 FA13 FA23 FA25 GB06 HA30 JA16 LA06 LA07 5D044 AB05 AB07 BC01 BC04 CC04 DE50 DE53 DE57 EF05 FG18 GK08 GK17 HL08 5D077 AA22 AA29 AA30 BA15 BA26 CA11 HC17 5D110 AA13 AA16 AA17 AA19 AA27 AA29 DA02 DA06 DA11 FA20 DB03 DB09 DB03 DE

Claims (11)

[Claims] 1. A title unit, which defines a pack unit that compresses data into a predetermined pack, further defines a unit unit that collects a plurality of packs into a unit, and further collects a plurality of units into a title. It defines a content area in which a plurality of titles can be recorded, and a management information area in which management information including at least selection information for reproducing the titles and information indicating the reproduction order of the selected titles is recorded. In the provided information recording medium, further, as a copy information management file, a copy information management file including copy information indicating whether the title is copy-prohibited or copy-free is defined, and the copy information management file is provided. An information recording medium characterized by the above. 2. A plurality of titles are recorded in the content area, and copy information indicating whether the titles are copy-prohibited or copy-free is recorded in an independently provided area of a copy information management file. A unit for reading the copy information management file and each thumbnail data of the plurality of titles from the recorded information recording medium, and displaying an image of each thumbnail data on the display unit,
An information recording / reproducing apparatus comprising: means for displaying the image of each thumbnail data by adding at least an image for notifying copy prohibition by analyzing the content of the copy information. 3. A plurality of titles can each be recorded in the content area, and copy information indicating whether each title is copy-protected or copy-free is recorded in an independent copy information management file area. Means for driving the first and second information recording media, and first and second drive means for performing information recording and information reproduction on the first and second information recording media, respectively, First and second encryption / decryption means for performing encryption or decryption on each of data input to and output from the first and second drive means, and the copy information from the first information recording medium A management file, a reading unit for reading each thumbnail data of the plurality of titles, and an image of each thumbnail data are displayed on the display unit, and the content of the copy information is displayed on the video of each thumbnail data. A display control means for displaying at least an image for notifying copy prohibition by analyzing, a title for which copy prohibition is selected, and an operation for requesting data dubbing to the second information recording medium is performed. When the copy-free title is selected, the first and second encryption / decryption means are executed to move only. An information recording / reproducing apparatus including: a control unit that sets the decryption unit to a passive mode. 4. The control means corresponds to means for erasing the copy-prohibited title of the first information recording medium, and the copy-prohibition title in the copy information management file of the second information recording medium. 4. The information recording / reproducing apparatus according to claim 3, further comprising means for additionally writing the copy prohibition information. 5. The control means, when a copy-free title is selected, sets the first and second encryption / decryption means in a passive mode, and either copies or moves the title. 4. The information recording / reproducing apparatus according to claim 3, further comprising means for selectively executing. 6. The first and second information in which management information includes copy information indicating that the title can be recorded in the content area and the title is copy-prohibited or copy-free. Means for driving a recording medium, first and second drive means for recording and reproducing information on the first and second information recording media, respectively, and the title from the first information recording medium. Reading means for reading and an analyzing means for analyzing the copy information in the management information of the title when an operation for requesting data dubbing (copying or moving) of the read title to the second information recording medium is performed, An information recording / reproducing apparatus comprising: a control unit that stops the data dubbing operation when the analysis unit detects the copy inhibition. 7. The control means, if a part of the data is already dubbed to the second information recording medium before stopping the data dubbing operation, the control means performs the dubbing after stopping the dubbing operation. 7. The method according to claim 6, further comprising means for erasing the stored data.
Information recording / reproducing apparatus described. 8. The control means adds means for additionally writing an independent copy information management file containing copy information indicating that the title is copy prohibited to the directory area of the second information recording medium. 7. The information recording / reproducing apparatus according to claim 6, which is provided. 9. A title unit that defines a pack unit that compresses data into a predetermined pack, further defines a unit unit that collects a plurality of packs into a unit, and further collects a plurality of units into a title. A content area in which a plurality of titles can be recorded, a management information area in which management information including at least selection information for reproducing the titles and information indicating the reproduction order of the selected titles is recorded, First and second information recording medium having a control packet including control information of a corresponding unit at the head of the unit, means for driving the first and second information recording medium, and First and second drive means for performing information recording and information reproduction on the first and second information recording media, respectively, and selected from the first information recording medium. When the operation for requesting data dubbing (copying or moving) of the read title and the read title to the second information recording medium is performed, the control information in the control pack of the read title is analyzed. An information recording / reproducing apparatus comprising: an analyzing unit for controlling the data dubbing operation and a controlling unit for stopping the data dubbing operation when the analyzing unit detects a copy prohibition from the control information. 10. A first recordable title that can be recorded in the content area and that has copy information indicating whether the title is copy-prohibited or copy-free is included in the management information. Means for driving the information recording medium and the second information recording medium incorporated in the device, and first and second drives for recording and reproducing information on the first and second information recording media, respectively. Means for reading the title from the first information recording medium and an operation for requesting the read title to be moved to the second information recording medium, copy information in the management information of the title An information recording / reproducing apparatus comprising: an analyzing unit for analyzing the above-mentioned condition; and a control unit for stopping the movement process when the copy prohibition is detected by the analyzing unit. 11. The information recording according to claim 1, wherein the copy information management file is provided in the root root directory as a file independent of a video file and a management information file existing in the root directory. Medium.