JP2002152658A - Information immediate recording device and information immediate recording method - Google Patents

Abstract

(57) [Problem] To provide an information immediate recording device capable of immediately recording information virtually on an optical disk even when recording preparation for the optical disk is not completed. A first recording / reproducing means (35, 3) for controlling recording and reproduction of information on an optical disc (1001).
0), a hard disk drive (2001), a second recording / reproducing means (30) for controlling recording and reproduction of information on the hard disk drive, and recording on the optical disk in a state where recording preparation on the optical disk is not completed. Is instructed, the target information is temporarily recorded on the hard disk drive, and after the recording preparation for the optical disk is completed, the target information previously recorded on the hard disk is read out at a predetermined timing, and the readout is performed. Recording control means (30) for recording the desired information on the optical disc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention records information on a hard disk or the like, reproduces the information recorded on the hard disk or the like, and further reproduces the information on a DVD (Digi
The present invention relates to an information recording apparatus capable of recording information on a recording medium such as a tal versatile disk and reproducing the information recorded on the DVD. In particular, the present invention relates to an information real-time recording apparatus and an information real-time recording method that eliminate information omission at power-on or DVD exchange.

[0002]

2. Description of the Related Art In recent years, there has been developed an optical disk reproducing apparatus for a moving image which reproduces an optical disk on which data such as video and audio data is recorded. This device is, for example, an LD or a video C
Like a D playback device, it is widely used for the purpose of appreciating movie software and enjoying karaoke.

[0003] Among them, currently, MPEG standardized internationally
2 (Moving Image Coding Expert Group) method and AC3 audio compression method
The VD standard has been proposed.

This standard supports the MPEG2 system as a moving image compression system according to the MPEG2 system layer,
AC3 audio compression and MPEG for audio compression
Supports audio compression. Further, it is possible to handle sub-picture data in which bitmap data is run-length-compressed for subtitles such as movies and karaoke. Further, according to this standard, control data (navi pack) for special reproduction such as fast forward and reverse is added in relation to a reproduction apparatus.

[0005] Furthermore, in this standard, IS09 is used so that data on a disk can be read by a computer.
660 and micro-UDF standards.

[0006] The standard of the media is DV
Following the DVD-ROM standard, which is a D-video medium, the DVD-RAM standard (with a recording capacity of about 4.7 GB) has been completed, and DVD-RAM drives have begun to spread as computer peripherals.

Further, at present, a DVD-Video standard for realizing a system capable of recording and reproducing information in real time using a DVD-RAM, that is, RTR (Real Time
Recording)-The DVD standard is being completed and verification work has been completed.

This standard conforms to the DVD-
It is based on video standards. In addition, the RT
A file system compatible with R-DVD is also currently standardized.

[0009] In addition, there has appeared a device which records and reproduces a broadcast signal by using a hard disk drive (HDD) built in a recording and reproducing device. Some hard disk drives can record, for example, data of 100 GB or more.

[0010]

When a hard disk drive that records information on a hard disk drive and a DVD device that records information on a DVD are considered alone, each has advantages and disadvantages.

In the case of a hard disk drive, in a normal use mode, the hard disk is built in the device and cannot be taken out. This makes it impossible to store data indefinitely. At some point, the remaining amount of the recording area becomes insufficient. Also, since the data cannot be taken out of the device, data recorded on the hard disk cannot be reproduced by another device.

On the other hand, a DVD device has a smaller storage capacity than a hard disk. However, DVDs are removable from the device and can be carried at any time.

An object of the present invention has been made in view of the above-mentioned circumstances, and has as its object to provide the following information immediate recording apparatus and information immediate recording method.

(1) An information immediate recording apparatus capable of taking advantage of both a hard disk and a DVD and virtually immediately recording information on a DVD even when recording preparation for the DVD is not completed.

(2) An information immediate recording method capable of recording information virtually instantaneously on a DVD by utilizing the advantages of both the hard disk and the DVD, even when the recording preparation for the DVD is not completed.

[0016]

Means for Solving the Problems In order to solve the above problems and achieve the object, an information immediate recording apparatus and an information immediate recording method of the present invention are configured as follows.

(1) An information real-time recording apparatus according to the present invention includes an input means for inputting video and audio data provided in real time, a second information recording medium incorporated therein, and a video and audio input by the input means. First recording / reproducing means for recording data on a removable first information recording medium or reproducing video / audio data recorded on the first information recording medium; and input by the input means Second recording / reproducing means for recording video / audio data on the second information recording medium or reproducing video / audio data recorded on the second information recording medium; and the first information recording medium When recording on the first information recording medium is instructed in a state where recording preparation for the first information recording medium is not completed, the second information is reproduced by the second recording / reproducing means instead of the first information recording medium. First recording control means for recording target video / audio data input from the input means on a recording medium, and the first information recording when the recording control is performed by the first recording control means. When recording preparation for the medium is completed, second recording control means for recording the target video / audio data input from the input means on the first information recording medium by the first recording / reproducing means, After the recording of the target video / audio data is completed by the recording control of the second recording control means, the target video / audio data recorded on the second information recording medium is read out by the first recording control means. A third recording control means for recording the read target video / audio data on the first information recording medium by the first recording / reproducing means, and a recording control means for the second recording control means. , And the third
By the recording control of the recording control means, the link data indicating the link of the target video / audio data recorded on the first information recording medium twice is recorded on the first information recording medium by the first recording / reproducing means. And a fourth recording control means for causing the recording to be performed.

(2) In the information immediate recording method according to the present invention, when recording on the first information recording medium is instructed in a state where recording preparation for the removable first information recording medium is not completed, Instead of the first information recording medium,
A first step of recording target video / audio data on a built-in second information recording medium; and recording on the first information recording medium when recording in the first step is continued. When the preparation is completed, the second step of recording the target video / audio data on the first information recording medium, and the recording of the target video / audio data by the recording of the second step is completed. Reading the target video / audio data recorded on the second information recording medium in the first step, and recording the read target video / audio data on the first information recording medium. Step 2, the recording in the second step, and the recording in the third step, the link data indicating the link of the target video / audio data recorded on the first information recording medium twice in the first step. Information And a fourth step of recording the recording medium.

[0019]

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 device (information immediate recording device) to which the present invention is applied.
When the blocks in FIG. 1 are roughly divided, the left side shows main blocks of the recording unit, and the right side shows main blocks of the reproducing unit. 1 will be described later in detail.

FIG. 2 shows a part of the directory structure of the DVD system.

FIG. 2 shows a directory structure of a DVD system, in particular, a real-time recording DVD (RTR-DVD) (here, indicated as DVD_RTAV).

In the directory (DVD_RTAV), VR_MANG as a video manager file
R. VR_M as IFO, movie video file
OVIE. VR_STILL.VRO as a still picture video file. VR_AUDIO.VRO as a still picture video file. VRO, VR_MANG as backup for video manager
R. Each file of BUP exists.

VR_MANGER. In the IFO file, navigation data is recorded. The 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). This V
R_MOVIE. VRO is an original VOB composed of a video part including an arbitrary sub-picture unit.
Used to record At this time, the audio part related to the video part is also included in the original VOB.

VR_STILL. VRO is a still picture AV file for recording a still picture VOB.

Further, VR_AUDIO. VRO is a still picture additional audio file for recording an additional audio stream for a still picture. This additional audio part indicates an audio stream recorded by after recording. The audio part is VR_STILL. Used in combination with several video parts recorded in VRO.

VR_MANGR. BUP is VR_MA
NGR. This is an IFO backup file.

FIG. 3A shows the VR_MOVIE.
2 shows the file structure of VRO.

The video file has 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
Consists of multiple packs. As multiple packs, R
There are a DI pack, a V pack, an A pack, and the like.

The V-pack is obtained by compressing video data according to the MPEG2 system, and includes a pack header, a packet header, and a video data portion. The A-pack is used when the audio data is, for example, linear PCM or MPEG,
Alternatively, it is processed by a method such as AC3, and includes a pack header, a packet header, and an audio data part.

FIG. 3B shows the relationship between M and V pack.
1 shows a format of video data based on the PEG2 system.

A group of pictures (GOP) is a unit compressed using a plurality of video frames, and a sequence header is added to the beginning of the group.
The sequence header describes the start code (SHC) of the sequence header, the number of vertical lines (HS) of pixels, the number of horizontal lines of pixels (VS), the aspect ratio (PAR), and the like.

The RDI pack shown in FIG. 4 is called a real-time data information pack (RDI_PCK), and includes real-time general information (RDI_PCK).
_GI), display control and copy control information (DCI_CCI), manufacturer information (MNF
I) and the like.

Real-time general information (RDI_G)
I) is information indicating the start time at which the first field of the VOBU to which this belongs is reproduced, that is, VOBU_S_P
TM and information indicating the recording time of the VOBU, that is, VOBU
BU_REC_TM.

The display control and copy control information (DCI_CCI) indicates the status of the display control information (DCI) and the copy control information (CCI) (DCI_CCI_S).
S), display control information (DCI) itself, and copy control information (CCI) itself.

The display control information status (DCI_SS) of (DCI_CCI_SS) is
In the first area, when only valid aspect ratio information exists (01b), when the effective aspect ratio, subtitle mode, and film camera mode exist (1b)
1b).

Display control information (DCI)
Includes aspect ratio information, subtitle mode information, and film camera mode.

The aspect ratio information indicates that the aspect ratio is 4:
3 (000b) and an aspect ratio of 16: 9 (0001b). Further, when the source picture is a letterbox, 1000b (letterbox (14: 9) but screen center arrangement), 01
00b (letter box (14: 9) but screen top arrangement), 1101b (letter box (16: 9)
9) but screen center arrangement), 0010b
(Letterbox (16: 9) but screen top arrangement) 1010b (Letterbox (> 16: 9)
But the screen center arrangement), 0111b (1
4: 9 full format).

The subtitle mode identifies that the subtitle is not opened (00b), the subtitle is inside the active image area (01b), and the subtitle is outside the active image area (10b).

The film camera mode identifies a camera mode (0b) and a film mode (1b).

FIG. 5 shows a video manager (VMG).
And a system for managing the data reproduction order therein is shown in detail.

The order of reproducing data recorded in the video file is as shown in FIG.
C). This program chain (PG
In (C), a cell (Cell) is defined, and in the cell (Cell), a VOB to be reproduced is defined. The part where the specific information of the PGC is recorded is the program chain information (P
GCI) portion. There are two types of PGCI,
One is the original PGCI (ORG_PGCI) and the other is the user-defined PGC table (UD_P
GCIT).

The recording / reproducing apparatus for a disc standardized as described above will be described again with reference to FIG.

The reproducing process in the recording / reproducing apparatus shown in FIG. 1 is performed in accordance with program chain information (PGCI) indicating a program reproducing order. In the PGCI, a plurality of programs (PG) can be designated.
Cell information (CI) is defined in GCI. The cell entry point (C
— EPI) is specified, and the VOB to be reproduced is specified. A special PGC for reproducing in the recording order is referred to as an original PGC, and information of the original PGC is recorded as ORG_PGCI. Further, the attribute information (resolution information, aspect information, audio attribute information, etc.) of the video data at this time is V
It is recorded in the stream information (STI) in the MGI. The above-described pack is a minimum unit for performing the data transfer process. Further, the minimum unit for performing logical processing is a cell unit, and the logical processing is performed in this unit. Therefore, when recording is performed, the recording signal is converted into a format that matches the above format.

The information recording / reproducing apparatus includes a hard disk drive 2001, a disk drive 35 for rotating and driving an optical disk 1001 as an information storage medium on which a video file can be constructed, and reading / writing information from / on the optical disk 1001, The encoder 50, which constitutes the recording side, the decoder 60, which constitutes the reproduction side, and the microcomputer block 30, which controls the operation of the apparatus main unit, are the main components.

The encoder unit 50 includes an ADC (analog-to-digital converter) 52, a V (video) encoder,
An encoder group 53 including an A (audio) encoder, an SP (sub-picture) encoder, a formatter 56 for converting the output of each encoder into a predetermined format, and a buffer memory 57 are provided.

The ADC 52 has an external analog video signal from the AV input section 42 and an external analog audio signal,
Alternatively, an analog video signal + analog audio signal from a TV (television) tuner 44 is input.

The ADC 52 digitizes the input analog video signal at, for example, a sampling frequency of 13.5 MHz and a quantization bit number of 8 bits. That is, the luminance component Y, the chrominance component Cr (or YR), and the chrominance component Cb (or YB) are each quantized by 8 bits.

Similarly, the ADC 52 converts the input analog audio signal into, for example, a sampling frequency of 48 k.
Hz and the number of quantization bits is 16 bits.

When a digital video signal or digital audio signal is input to the ADC 52, the ADC 52
2 passes through the digital video signal and the digital audio signal. The digital video signal and the digital audio signal may be subjected to a jitter reduction process, a sampling rate change process, etc. without altering the content. However, when the sampling frequency or the like is different, a conversion process is performed.

The digital video signal output from the ADC 52 is sent to a formatter 56 via a V encoder. The digital audio signal output from the ADC 52 is sent to the formatter 56 via the A encoder.

The V encoder has a function of converting an input digital video signal into a digital signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard. Also, the A encoder has a function of converting the input digital audio signal into a digital signal compressed at a fixed bit rate or a linear PCM digital signal based on the MPEG or AC-3 standard.

When the 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 the sub-picture signal) or a DVD video signal having such a data structure is broadcasted, When the video signal is received by the TV tuner 44, the sub video signal (sub video pack) in the DVD video signal is input to the SP encoder. The sub-picture signal input to the SP encoder is arranged in a predetermined signal form and sent to the formatter 56.

The formatter 56 includes a buffer memory 57
By performing predetermined signal processing on the input video signal, audio signal, sub-picture signal and the like while using as a work area, the format (file structure) described above with reference to FIGS. Is output to the data processor 36.

Here, the present apparatus transmits the information encoded by the encoder section 50 and the created management information to the hard disk drive 200 via the data processor 36.
1 and recorded on a hard disk.
The information recorded on the hard disk is transferred to the optical disk 1 via the data processor 36 and the disk drive 35.
001 can also be recorded. Furthermore, the information encoded by the encoder unit 50 and the created management information are transmitted to the data processor 36 and the disk drive 35.
Can also be recorded on the optical disc 1001 via the.

The present invention also relates to a hard disk drive 20
01 is the same as the data format of the optical disc 1001,
The information on the hard disk can be recorded on the optical disk without encoding.

The information recorded on the hard disk of the hard disk device 2001 is
If the data format is different from the data format, the information read from the hard disk is encoded by the encoder unit 50. Then, the encoded information is transferred to the optical disc 1001.
Can be recorded.

Here, a brief description will be given of the contents of standard encoding processing for creating data to be recorded on the optical disk 1001. That is, when the encoding process is started in the encoder unit 50, parameters necessary for encoding the video (main video) data and the audio data are set.

Next, by pre-encoding the main video data using the set parameters, the distribution of the optimal code amount for the set average transfer rate (recording rate) is calculated. The encoding process of the main video data is executed based on the code amount distribution obtained by the pre-encoding process. At this time, the encoding process of the audio data is also executed at the same time. Similarly, parameters required for encoding the sub-picture data are set, and encoded sub-picture data is created.

The encoded main video data, audio data and sub-video data are combined and converted into a video object set VOBS structure.

That is, main video data (video data)
Is set as the minimum logical unit of the above, and the cell information as described in FIG. 5 is created. Next, the configuration of the cells constituting the program chain PGC, the attributes of the main video, the sub-video and the audio, and the like are set. (Some of these attribute information uses information obtained when encoding each data. ), And a VMG file including various information is created here.

The encoded main video data, audio data and sub video data have a fixed size (204
8 bytes) (FIG. 3). In the pack, a PTS (presentation time stamp) indicating a reproduction time and a DT indicating a decoding time are appropriately included.
A time stamp such as S (decoding time stamp) is described. Regarding the PTS of the sub-picture, the PTS of the main picture data or audio data in the same playback time zone
A time arbitrarily delayed from S can be described.

Each cell is arranged with an RDI pack (corresponding to a navigation pack) at the beginning of each video object unit VOBU so that the data can be reproduced in time code order. Thereby, the video object VOB composed of a plurality of cells
Is configured. A video object set VOBS obtained by collecting one or more video objects VOB is recorded as a program in a movie video file.

When digitally copying a DVD reproduction signal from a DVD video player, the contents of the cell, the program chain, the management table, the time stamp, and the like are determined from the beginning, so that there is no need to create them again. .

A portion for reading and writing (recording and / or reproducing) information on the optical disk 1001 includes a disk drive 35 having an optical system and a driving system,
Data processor 36, temporary storage unit 37, STC
(System time counter or system time clock) 38.

The temporary storage unit 37 stores the data processor 3
6. Buffer a certain amount of data (data output from the encoder unit 50) to be written to the optical disk 1001 via the disk drive 35, or reproduce from the optical disk 1001 via the disk drive 35 and the data processor 36. Data (decoder section 6
It is used for buffering a certain amount of data (data input to 0). Disk drive 35
Has a rotation control system for the optical disk, a laser drive system, an optical system, and the like.

For example, when the temporary storage unit 37 is constituted by a 4 Mbyte semiconductor memory (DRAM), the average
It is possible to record or reproduce data for about 8 seconds at a recording rate of Mbps (bits per second). Further, when the temporary storage unit 37 is constituted by a 16 Mbps EE (Electrically Eraseable and Programmable) ROM (flash memory), buffering of recording or reproduction data for about 30 seconds at an average recording rate of 4 Mbps is performed. It is possible.

Further, the temporary storage unit 37 stores 100 Mbytes.
In the case of using an ultra-small HDD (hard disk drive) of e, recording or reproduction data can be buffered for 3 minutes or more at an average recording rate of 4 Mbps.

The temporary storage unit 37 can also be used to temporarily store short-time recording information until the optical disk 1001 is replaced with a new disk when the optical disk 1001 is used up during recording.

However, since the hard disk device 2001 having a large capacity is provided in the device of the present invention, this device can be utilized.

In the case where a high-speed drive (double speed or higher) is employed as the disk drive 35, the temporary storage section 37 temporarily stores extra data read from the normal drive within a certain period of time. Also available. If the read data at the time of reproduction is buffered in the temporary storage unit 37, the read data buffered in the temporary storage unit 37 can be switched and used even when a read error occurs in an optical head (not shown) due to vibration shock or the like. This makes it possible to prevent the reproduced video from being interrupted.

Under the control of the microcomputer block 30, the data processor 36 supplies the DVD recording data output from the encoder unit 50 to the disk drive 35, and takes in the DVD reproduction signal reproduced from the optical disk 1001 from the disk drive 35. Alternatively, the management information recorded on the optical disc 1001 is rewritten, or the data (file or video object) recorded on the optical disc 1001 is deleted.

The microcomputer block 30 includes M
PU (microprocessing unit) or CPU
(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.

The MP of the microcomputer block 30
U uses the RAM as a work area to execute defect location detection, unrecorded area detection, recording information recording position setting, UDF recording, AV address setting, etc., according to the control program stored in the ROM.

The microcomputer block 30
Has an information processing unit necessary for controlling the entire system, and includes a copy information detection / setting unit, a directory detection unit, and a VMG management information creation unit.

Of the execution results of the MPU, the contents to be notified to the user of the disk drive 35 are displayed on the display section 48 of the DVD video recorder, or are displayed on the monitor display by OSD (on-screen display).

The microcomputer block 30
However, the timing for controlling the disk drive 36, the data processor 36, the encoder unit 50 and / or the decoder unit 60, and the like can be executed based on the time data from the STC 38. Recording and playback operations are normally performed in synchronization with the time clock from the STC 38, but other processing may be performed at a timing independent of the STC 38.

The decoder unit 60 includes a separator 62 for separating and extracting each pack from video information having a pack structure as shown in FIG. 3, a memory 63 used for performing pack separation and other signal processing, and a separator 62. , A V decoder that decodes the main video data (contents of the video pack) separated by, an SP decoder that decodes the sub video data (contents of the sub video pack) separated by the separator 62, and the audio that is separated by the separator 62 A decoder group 64 by an A decoder for decoding data (contents of an audio pack) and sub video data obtained from an SP decoder are appropriately combined with main video data obtained from a V decoder, and a menu, a highlight button, and subtitles are added to a main video. Video processor 6 for superimposing and outputting sub-pictures
6 is provided.

The output of the video processor 66 is input to the video mixer 71. In the video mixer 71, text data is synthesized. Video mixer 7
1 is also connected to a line for directly taking in signals from the TV tuner 44 and the A / V input unit 42. The video mixer 71 is connected to a frame memory 72 used as a buffer. When the output of the video mixer 71 is a digital output, an interface (I / F)
73 to the outside, and in the case of analog output,
Output to the outside via the DAC 74.

When the output of the A-decoder is a digital output, it is output to the outside via an interface (I / F) 75, and when it is an analog output, it is analog-converted by a DAV 77 via a selector 76 and output to the outside. . The selector 76 can select an output from the ADC 52 when directly monitoring a signal from the TV tuner 44 or the A / V input unit 42 based on a select signal from the microcomputer block 30. The analog audio signal is supplied to an external component (not shown) (a multi-channel stereo device having two to six channels).

In the above apparatus, the flow of a video signal will be briefly described as follows.

First, the input AV signal is digitally converted by the ADC 52. A video signal is input to a V encoder, an audio signal is input to an A encoder, and character data such as a text broadcast is input to an SP encoder. Video signal is MP
EG compressed, audio signal is AC3 compressed or MP
EG audio compression is performed, and character data is run-length compressed.

The compressed data from each encoder is packetized so that it becomes 2048 bytes when packed, and is input to the formatter 56. In the formatter 56, each packet is packed, multiplexed, and sent to the data processor 36.

Here, the formatter 56 creates an RDI pack based on the information from the aspect information detecting section 43 and arranges it at the head of the video object unit (VOBU). The data processor 36 outputs E every 16 packs.
A CC block is formed, error correction data is added, and the output is sent to the optical disk 1001 via the disk drive 35.
Record to. Here, the temporary storage unit 37 (for example, an HDD buffer unit) is used when the disk drive 35 is in a busy state because the disk drive 35 is performing a seek operation or a track jump operation.
And waits until the DVD-RAM drive (disk drive 35) is ready.

Further, in the formatter 56, during recording,
Each segmentation information is created and periodically sent to the MPU of the microcomputer block 30 (information at the time of a GOP head interrupt, etc.).

As the segmentation information, the number of VOBU packs, the end address of the I picture from the VOBU head,
For example, the playback time of the VOBU.

At the same time, the information from the aspect information detector 43 is sent to the MPU at the start of recording, and the MPU creates VOB stream information (STI). Where STI is
When the resolution data, the aspect data and the like are stored and reproduced, each decoder section is initialized based on this information.

In the recording / reproducing DVD, one video file is recorded on one disk.

Here, in a real-time recording / reproducing apparatus using a DVD, a point to be noted is that, when accessing data, during data access (seek),
In order to continue reproduction without interruption, a minimum of consecutive sectors is required. This unit is called CDA (Contiguous Data Area).

It is advantageous that the CDA is in ECC block units. Therefore, CDA size is 16
In the file system, this CDA
Recording is performed in units. However, in this case, if there is not enough free space of the size of the CDA in the disk, the short sector used by another file is the CDA.
It allows them to get inside. Thereby, recording can be performed in CDA units.

FIG. 6 also shows a video manager (VM
G) Movie AV file information table (M_AV)
FIT) are shown hierarchically. The information in this table includes the number of recorded VOBs (programs),
Number of audio or sub-picture stream corresponding to B,
Attributes of each VOB (television system, aspect ratio, etc.)
Is recorded as stream information (M_VOB_STI). Further, as M_AVFI, information indicating whether the VOB can be reproduced or temporarily deleted, and date and time information (recording time) when the VOB was recorded are described as general information. Furthermore, as individual information,
A search pointer of each VOB and system clock information as information (SMLI) for continuously reproducing a plurality of VOBs are described. Further, time map information (TMAPI) of the VOBU in the VOB is described. The time map information can be used when performing special reproduction or the like.

The system of the present invention includes a DVD-RAM
A recording function is provided immediately when the device is loaded into the device.
Hereinafter, the operation will be described with reference to FIG.

When the DVD-RAM is loaded, a disk detection signal is supplied from the disk sensor to the microcomputer block 30. Initialized DVD-RAM
When is loaded, it takes about several tens of seconds until the recording preparation for the DVD-RAM is completed. The breakdown is that the time required for the rotation speed of the DVD-RAM to reach the desired speed is the time required for the DVD-RAM to reach the desired rotation speed.
This is the time for reading the management information from the RAM and the time for storing the read management information in the temporary storage unit 37. When a DVD-RAM that has not been initialized is loaded, the DVD-RA
Time (several minutes) is required to initialize M.

For example, if the DVD-RAM is loaded and the recording of data to the loaded DVD-RAM is instructed immediately, or immediately after the power is turned on to the recording / reproducing apparatus, the recording is immediately performed for the above reason. However, data cannot be recorded on a DVD-RAM. However, this is inconvenient. Therefore, according to the present invention, when the preparation for recording on the DVD-RAM is not completed, the HDD 2001 is regarded as a virtual DVD-RAM, and data is stored on the virtual DVD-RAM until the preparation for recording on the DVD-RAM is completed. Record

First, the processing for the DVD-RAM shown in FIG. 7 will be described. Here, it is assumed that the DVD-RAM has been initialized. When the disc insertion is detected, the file system of the DVD-RAM is taken. It is determined whether or not there is free space, and if not, a warning is displayed indicating that there is no recording space. If there is a free area, the write address is determined.

Next, the video manager information (VMGI) is read from the DVD-RAM into the work RAM, and if not, it is generated internally to construct a VMGI table.
This processing is performed mainly by the microcomputer block 30 in steps A1, A2, A3, A4, A
5, corresponding to A6. That is, while the DVD-RAM is loaded in the recording / reproducing apparatus, the file system is checked,
A check of a free area is performed.

Next, recording initial setting is performed in the encoder unit 50, and recording is started (step A7). That is, when the microcomputer block 30 confirms that the recording is possible, the recording initial setting is performed. In addition, resetting of STC, setting of a write start address to a drive, setting of a write command, initial setting to a formatter, and setting of alignment processing include setting preparation for delimiting a cell, a VOBU, a program (PG), and a program chain (PGC). Is performed.

That is, at the start of recording, the encoder unit 50
A recording start command is set in the, and the division information in the formatter 56 is registered as a VOBU. Thus, when recording starts, the encoder unit 50 compresses the frames of the input video signal in GOP units, packs the GOPs, and collects the packs and organizes them in VOBU units. Aspect ratio information is inserted into the sequence header of the GOP (see FIG. 3).
(B)). Also, as the first pack of the VOBU, RD
An I-pack (see FIGS. 3B and 4) is arranged. At this time, as described with reference to FIG. 3A, audio packs and sub-picture packs are also collected (step A8).

When the encoded data has accumulated for one CDA, each drive unit is set to record the data in a free area of the DVD-RAM, and the link information of the sector to be recorded is stored in the work RAM (A15, A16).

In steps A8 to A15, the following checks are performed. When the separation information is accumulated in the formatter 56, an interrupt process is performed to capture the separation information (steps A9 and A10). The separation information is temporarily taken into the work RAM as VOBU management information. It is also checked whether a recording end key has been input or whether a recording end command (command for ending scheduled recording) has been input (step A11). Further, a process of calculating the remaining capacity and a process of determining whether the remaining capacity has fallen below a certain value are also performed (steps A12 and A13). , Etc., and the corresponding process when the remaining capacity is low is performed (step A14).

In step A17, it is determined whether or not there is a recordable capacity. If the capacity is available, the process returns to step A9. If not, the formatter takes in the division information into the microcomputer block and initializes the formatter. .

Next, it is determined whether or not there is data temporarily recorded in the hard disk or a buffer RAM instead of the hard disk (step A19). If present,
The data in the hard disk or buffer RAM is
Recorded in VD-RAM, hard disk or buffer R
The AM data is cleared (step A20).

Next, recording end processing is performed (step A2).
1). As the recording end processing, the file system is updated (when data is transferred and recorded from the hard disk to the DVD-RAM, link information is created so that the data comes first on the DVD-RAM), and the video manager (VMG) is used. ) Is written as the updated management information (P
GCI setting, separation information, etc.).

Referring to FIG. 9, the processing in the case where there is an interrupt in step A9 of FIG. 7 will be briefly described.

When the interrupt information is detected, the cause of the interrupt is checked, the data of one pack is transferred to the data processor 36, and the counting of the number of recording packs is started. Then, an interrupt flag is set each time one piece of segmentation information is taken in for the packs being processed one after another by the formatter 56. This process is performed until the interruption is released. When the interruption is released, it is determined whether or not one CDA is available from the number of recording packs via steps A11, A12, A13, and A14. At the same time, the interrupt flag is deleted. This allows
Even if the interrupt processing is executed, the cell, VOBU, PG,
There is no loss of segmentation information for creating a PGC or the like.

FIG. 10 is a flowchart showing the operation in the case where the DVD-RAM is loaded in the apparatus as described above and the hard disk is temporarily recorded until the recording is ready.

First, recording initial setting is performed in the encoder unit 50, and recording is started (step B1). That is, when the microcomputer block 30 confirms that the recording is possible, the recording initial setting is performed. In addition, resetting of STC, setting of a write start address to a drive, setting of a write command, initial setting to a formatter, and setting of alignment processing include setting preparation for delimiting a cell, a VOBU, a program (PG), and a program chain (PGC). Is performed.

That is, at the start of recording, the encoder unit 50
A recording start command is set in the, and the division information in the formatter 56 is registered as a VOBU. Thus, when recording starts, the encoder unit 50 compresses the frames of the input video signal in GOP units, packs the GOPs, and collects the packs and organizes them in VOBU units. Aspect ratio information is inserted into the sequence header of the GOP (see FIG. 3).
(B)). Also, as the first pack of the VOBU, RD
An I-pack (see FIGS. 3B and 4) is arranged. At this time, as described with reference to FIG. 3A, audio packs, sub-picture packs, and the like are also collected (step B2).

When the separation information is accumulated in the formatter 56, an interruption process is performed to capture the separation information (steps B3 and B4). The separation information is temporarily taken into the work RAM as VOBU management information.

When the encoded data has accumulated for one CDA, it is set to be recorded in the free area of the HDD 2001, and the link information of the sector to be recorded is stored in the work RAM (steps B5 and B6).

Thereafter, when the preparation for recording on the DVD-RAM is completed, the writing to the HDD 2001 is stopped (steps B7 and B8).

Hereinafter, the instant recording function will be summarized.

As described above, immediately after loading the DVD-RAM or immediately after the recording / reproducing device is turned on, the DVD-RAM is read.
Since the recording preparation for RAM is not completed, DVD
-No data can be recorded in RAM. Immediately after loading a disk, disk check processing, file system reading, and VMG reading are performed. In the recording / reproducing apparatus of the present invention, the HDD 2001
Considering it as a VD-RAM, even immediately after loading a disk or immediately after turning on the power to the recording / reproducing apparatus, it is as if a DVD-R
The recording operation is controlled as if data is recorded in the AM.

Immediately after loading the disc, as described above,
A disk check process is performed. By this check, the type of the loaded disc is determined. If the loaded disc is a DVD-RAM and the disc is unformatted, a formatting process is performed. Normally, the DVD-RAM to be sold is formatted, but if the file is damaged, it needs to be reformatted.

Following the disk check processing, the file system is read and expanded in the work RAM. When the VMG is detected from the file system, the VMG is directly expanded in the work RAM. If no VMG is detected, a VMG is built in the work RAM.

The video / audio data to be recorded is supplied from an A / V input unit 42 as input means. The video and audio data supplied from the input unit 42 is
0, the data is finally recorded on the optical disk 1001 (DVD-RAM) by the disk drive 35. Alternatively, the video / audio data supplied from the input unit 42 is finally recorded on the HDD 2001 via the encoder unit 50.

When recording on the optical disk 1001 is instructed (recording instruction on the disk) in a state where the preparation for recording on the optical disk 1001 is not completed, the microcomputer block 30 performs the first recording control.
Instead of the optical disc 1001, target video / audio data is recorded on the HDD 2001. At this time, the cut information is stored in the work RAM.

If the HDD 2001 runs out of free space before the preparation for recording on the optical disc 1001 is completed, a message to that effect is displayed and the subsequent recording is terminated.
In such a case, the target video / audio data is lost.

By the above-described first recording control, the HDD 2
When the preparation for recording on the optical disc 1001 is completed while the target video / audio data is recorded on the optical disc 1001, the target video / audio data is recorded on the optical disc 1001 by the second recording control of the microcomputer block 30. Is done. At this time, the write start address is determined by the file system. Here, the target video / audio data to be recorded is a continuation of the target video / audio data recorded by the first recording control.
Strictly speaking, data recording is performed in units of CDAs, and after the recording preparation for the optical disk 1001 is completed, the optical disk 100 is transferred from a new CDA unit.
1 is recorded.

After the recording of the target video / audio data is completed by the above-described second recording control (after all the target video / audio data has been recorded), the first recording control of the microcomputer block 30 causes the first recording control. H control by recording control
The target video / audio data recorded on the DD 2001 is read, and the read target video / audio data is recorded on the optical disc 1001.

Further, the microcomputer block 3
By the fourth recording control of 0, a link indicating the link of the target video / audio data recorded on the optical disc 1001 twice is established by the second recording control and the third recording control. That is, the optical disc 10 is controlled by the second recording control.
A file system is constructed on the optical disk 1001 so that the target video / audio data recorded on the optical disc 1001 is reproduced earlier by the third recording control than the target video / audio data recorded on the optical disc 1001. Alternatively, program chain information (PGCI) for reproducing the target video / audio data recorded on the optical disc 1001 by the third recording control earlier than the target video / audio data recorded on the optical disc 1001 by the second recording control. Is recorded on the optical disc 1001. The optical disk 1
001 and the data recording unit for the HDD 2001 are CDA units.

In the above description, a case has been described in which video / audio data that has been recorded in the HDD 2001 as a substitute is moved to the optical disc 1001 after all the target video / audio data has been recorded. However, the present invention is not limited to this. Not something. For example, when the recording preparation of the optical disc 1001 is completed, the video / audio data that has been recorded as a substitute in the HDD 2001 is moved to the optical disc 1001,
Thereafter, the subsequent video and audio data may be recorded on the optical disc 1001. In this case, the optical disk 10
In 01, video and audio data are recorded in the order of reproduction, so that a link is not required.

The present invention is not limited to the above-described embodiment, and can be variously modified in the implementation stage without departing from the gist of the invention. In addition, the embodiments may be implemented in appropriate combinations as much as possible, in which case the combined effects can be obtained. Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriate combinations of a plurality of disclosed constituent elements. For example, even if some components are deleted from all the components shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effects described in the column of the effect of the invention can be solved. If you get
A configuration from which this configuration requirement is deleted can be extracted as an invention.

[0125]

According to the present invention, the following information immediate recording apparatus and information immediate recording method can be provided.

(1) An information immediate recording apparatus capable of taking advantage of both a hard disk and a DVD and virtually immediately recording information on a DVD even when recording preparation for the DVD is not completed.

(2) An information immediate recording method which can take advantage of both the hard disk and the DVD and virtually immediately record information on the DVD even when the preparation for recording on the DVD is not completed.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a part of a directory structure of a DVD system.

FIG. 3 shows VR_MOVIE. FIG. 3 is a diagram showing a file structure of VRO and a format of video data based on the MPEG2 system in relation to a V pack.

FIG. 4 is a diagram showing details of RID data.

FIG. 5 is a diagram showing a hierarchical structure of a video manager (VMG) and showing in detail a system for managing a data reproduction order.

FIG. 6: Movie A in Video Manager (VMG)
It is a figure which shows a V file information table (M_AVFIT) hierarchically.

FIG. 7 is a first part of a flowchart showing a recording process 1 for a DVD-RAM;

FIG. 8 is the second stage of the flowchart showing the recording process 2 for the DVD-RAM.

FIG. 9 is a diagram showing interrupt processing for a DVD-RAM.

FIG. 10 is a flowchart illustrating a recording process for an HDD.

[Explanation of symbols]

 Reference Signs List 30 microcomputer block 35 disk drive 36 data processor 37 temporary storage unit 50 encoder unit 60 decoder unit 1001 optical disk (DVD-RAM) 2001 hard disk drive (HDD)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuya Fujita 70 Yanagicho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture F-term (reference) 5C052 AA02 AA20 AB04 CC11 DD04 DD07 EE03 EE05 5D044 AB06 AB07 BC01 BC02 CC04 CC09 HL02 HL07 JJ01 JJ02 5D090 AA01 BB04 CC01 CC05 CC16 DD03 DD05 EE01 FF21 FF29 HH01 LL09

Claims (7)

[Claims] A first recording / reproducing means for recording information on a removable first information recording medium and reproducing the information recorded on the first information recording medium; An information recording medium; second recording / reproducing means for recording information on the second information recording medium and reproducing information recorded on the second information recording medium; If recording on the first information recording medium is instructed in a state where recording preparation is not completed, the second information recording medium is replaced by the second recording / reproducing means instead of the first information recording medium. First recording control means for recording target information on a medium, and after the recording preparation for the first information recording medium is completed, the first recording control means controls the second information recording medium at a predetermined timing. Recorded on Second recording control means for reading the target information and recording the read target information on the first information recording medium by the first recording / reproducing means. Instant recording device. 2. An input means for inputting video and audio data provided in real time, a built-in second information recording medium, and a first information recording to which the video and audio data input by the input means can be attached and detached. Recorded on the medium or this first
A first recording / reproducing means for reproducing the video / audio data recorded on the information recording medium, and a video / audio data inputted by the input means being recorded on the second information recording medium; Second recording / reproducing means for reproducing video / audio data recorded on the information recording medium, and recording on the first information recording medium in a state where recording preparation on the first information recording medium is not completed. When instructed, instead of the first information recording medium, the second recording / reproducing means records the target video / audio data inputted from the input means on the second information recording medium. A first recording control unit, and when recording is controlled by the first recording control unit, when the preparation for recording on the first information recording medium is completed, the first recording / reproducing unit sets the first recording / reproduction unit. A second recording control unit for recording the target video / audio data input from the input unit on the information recording medium; and recording of the target video / audio data by the recording control of the second recording control unit. After the completion, the target video / audio data recorded on the second information recording medium is read out by the first recording control means, and the read target video / audio data is read out by the first recording / reproducing means. A third recording control unit for recording on the first information recording medium, a recording control of the second recording control unit, and a recording control of the third recording control unit, the first information being stored twice. A fourth recording control unit for causing the first recording / reproducing unit to record link data indicating a link of target video / audio data recorded on the recording medium on the first information recording medium. Information immediate recording apparatus characterized. 3. The fourth recording control means performs the third recording control with respect to the target video / audio data recorded on the first information recording medium by the recording control of the second recording control means. A file system for reproducing the target video / audio data recorded on the first information recording medium first by the recording control of the means on the first information recording medium by the first recording / reproducing means. The information immediate recording apparatus according to claim 2, wherein: 4. The fourth recording control means performs the third recording control with respect to the target video / audio data recorded on the first information recording medium by the recording control of the second recording control means. The first recording / reproducing means causes the first recording / reproducing means to construct on the first information recording medium, the program chain information for first reproducing the target video / audio data recorded on the first information recording medium by the recording control of the means. 3. The information immediate recording apparatus according to claim 2, wherein: 5. The apparatus according to claim 1, wherein said first and second recording / reproducing means are a CD
3. The information immediate recording apparatus according to claim 2, wherein the video / audio data is recorded in A units. 6. An input means for inputting video / audio data provided in real time, a built-in second information recording medium, and a first information recording / removable video / audio data input by said input means. Recorded on the medium or this first
A first recording / reproducing means for reproducing the video / audio data recorded on the information recording medium, and a video / audio data inputted by the input means being recorded on the second information recording medium; Second recording / reproducing means for reproducing video / audio data recorded on the information recording medium, and recording on the first information recording medium in a state where recording preparation on the first information recording medium is not completed. When instructed, instead of the first information recording medium, the second recording / reproducing means records the target video / audio data inputted from the input means on the second information recording medium. A first recording control unit, when recording is controlled by the first recording control unit, when the recording preparation for the first information recording medium is completed, the first recording control unit sets the second recording control unit to the second recording control unit. The target video / audio data recorded on the information recording medium is read, and the read target video / audio data is recorded on the first information recording medium by the first recording / reproducing means. A second recording control unit for recording target video / audio data input from the input unit on the first information recording medium by a recording / reproducing unit; . 7. When recording on the first information recording medium is instructed in a state where recording preparation for the first information recording medium is not completed, the first information recording medium is replaced with the first information recording medium. A first step of recording target video / audio data on a built-in second information recording medium; and a step of recording the first information recording medium when the recording in the first step is continued. When the recording preparation is completed, the second step of recording the target video / audio data on the first information recording medium, and the recording of the target video / audio data is completed by the recording of the second step. Thereafter, the target video / audio data recorded on the second information recording medium in the first step is read out, and the read target video / audio data is read out from the first video / audio data.
The third step of recording on the information recording medium of the above, the target video and audio data recorded on the first information recording medium twice by the recording of the second step and the recording of the third step And a fourth step of recording link data indicating the link on the first information recording medium.