JP2001344877A - Information recording device, information recording method and method for controlling optical disk exchange timing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information recording device which requests the ending of a disk exchange while data which does not generate any problems when lacks among a series of the continuously provided data is provided. SOLUTION: This information recording device has a recording means (45) which records the data to an optical disk, a residual capacity detecting means (10) which detects the recordable remaining capacity of the optical disk changing with the recording of the data when the data is recorded to the optical disk by the recording means and a requesting means (10) which requests the exchange of the optical disk to be recorded when the drop of the recordable remaining capacity detected by the residual capacity detecting means is elucidated to attain the prescribed capacity or below and when the change in the certain specific characteristic of the data recorded on the optical disk is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording apparatus and an information recording method for recording data on an optical disk such as a DVD.

[0002]

2. Description of the Related Art In recent years, 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, has been developed. Widespread.

[0003] Among them, currently, MPEG standardized internationally
2 (Moving Image Coding Exp
In addition, a DVD standard has been proposed which uses an AC3 audio compression method using an "ert Group" method.

This standard supports MPEG2 as a moving picture compression system, AC3 audio and MPEG audio as audio in accordance with the MPEG2 system layer, and further performs sub-length data obtained by run-length-compressing bitmap data for subtitles, fast forward rewind, etc. Special play control data (Navi Pack) is added.

Further, this standard supports ISO9660 and micro UDF so that data can be read by a computer.

[0006] The standard of the media is DV
DVD-RO, the media used for D-Video
Following M, the DVD-RAM standard (2.6 GB) has been completed, and DVD-RAM drives have begun to spread as computer peripherals.

Therefore, at present, RTR-DVD (Real Time Record), which is a DVD video standard capable of real-time recording and reproduction using the DVD-RAM.
er) standards are being completed and verification work is expected to be completed in the spring of 2000. This standard is considered based on the DVD-Video standard currently on the market.
Further, a file system compatible with the RTR-DVD is currently being standardized. With this, RTR-DV
DVD videos using D have begun to be released.

[0008]

However, the capacity of the current disk is 4.7 GB at the maximum, and it is possible to record only about 2 hours at 8 Mbps, which is high quality. for that reason,
In the case of long content, there is a possibility that the content does not fit into one piece. Therefore, it is necessary to record on a plurality of disks. The disk exchange operation is described in JP-A-11-176096. However, Japanese Patent Application Laid-Open No. 11-176096 presupposes high-speed recording, and current media cannot perform high-speed recording as described here. for that reason,
There is a problem that data cannot be processed during the disk exchange when the disk is replaced.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information recording apparatus, an information recording method, and an optical disk exchange timing control method described below in view of the above circumstances.

(1) An information recording apparatus for requesting that a disk be replaced while data that may be missing is provided in a series of data provided continuously.

(2) An optical disk exchange timing control method for requesting an exchange of a disk while data that may be lost is provided in a series of data that is continuously provided.

(3) When recording target data is being recorded in real time, the recording target data that cannot be recorded on the optical disk due to disk exchange is temporarily held,
An information recording apparatus that records the recording target data on the optical disk later and updates the management information so that the recording target data recorded here is reproduced at a predetermined timing.

(4) When the data to be recorded is being recorded in real time, the data to be recorded is temporarily held during recording that cannot be recorded on the optical disc by disc replacement.
An information recording method of recording the recording target data on the optical disk later and updating the management information so that the recording target data recorded here is reproduced at a predetermined timing.

[0014]

In order to solve the above-mentioned problems and achieve the object, an information recording apparatus, an information recording method, and an optical disk exchange timing control method according to the present invention are configured as follows.

(1) An information recording apparatus according to the present invention comprises: recording means for recording data on an optical disc; and recording of the optical disc, which changes with data recording when data is recorded on the optical disc by the recording means. Remaining capacity detection means for detecting a remaining capacity that is possible, and data to be recorded on the optical disc when it is determined that the remaining recordable capacity detected by the remaining capacity detection means has become equal to or less than a predetermined capacity. Requesting means for requesting replacement of an optical disc to be recorded when a change in certain characteristic is detected.

(2) An information recording apparatus according to the present invention comprises: recording means for recording data on an optical disk; and a series of recording data continuously provided by the recording means for a predetermined period of time in a CDA unit in real time. First recording control means for recording data on the optical disk together with the optical disk, holding means for holding data to be recorded which cannot be recorded on the optical disk in CDA units while the optical disk is exchanged, and predetermined time after the exchange of the optical disk is completed. A second method of restarting recording of a series of data to be recorded provided over a period of time and recording the series of data to be recorded on an optical disk exchanged together with management information in CDA units in real time
After the recording control unit and the second recording control unit complete the recording of the series of recording target data, record the recording target data held in the holding unit on the optical disc exchanged in CDA units, Update processing means for updating the management information so that the data to be recorded in the middle is reproduced before the data to be recorded recorded by the second recording control means.

(3) In the optical disk exchange timing control method according to the present invention, when data is recorded on the optical disk, a first step of detecting a remaining recordable capacity of the optical disk that changes with data recording; The first
When it is determined that the remaining recordable capacity detected in the step (b) has become equal to or less than the predetermined capacity, and a change in a characteristic of data recorded on the optical disc is detected, the recording target optical disc is replaced. And a second step of requesting

(4) According to the information recording method of the present invention, a first step of recording a series of data to be recorded, which is provided over a predetermined time, together with management information on an optical disk in real time in units of CDA, A second step of holding the recording target data that cannot be recorded on the optical disc in CDA units, and restarting the recording of a series of recording target data provided for a predetermined time after the exchange of the optical disc is completed. A third step of recording the data to be recorded on the optical disc exchanged together with the management information in CDA units in real time;
After the recording of the series of recording target data is completed by the third step, the recording target data included in the series of recording target data held earlier is recorded on the optical disc exchanged in CDA units. And a fourth step of updating the management information so that the recording target data is reproduced before the recording target data recorded in the third step.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

The DVD stores data in a normal file format. Further, the title corresponds to, for example, one movie, and a plurality of titles are stored on one disc. A collection of the titles is called a title set, and the title set is composed of a plurality of files.

FIG. 2 shows an example of a directory structure of a DVD. As shown in FIG. 2, a directory exists for each standard in DVD, and a VI-
AUDIO_T for DEO_TS, DVD-Audio
S, RTR-DVD, DVD_RTR. Each record data exists in this directory.

Further, in the case of DVD-video, one disc contains V information as information for managing this disc.
There is a file called video Manager (hereinafter referred to as VMG).

Further, in the title set (hereinafter referred to as VTS), information for managing this title set is provided by Video Title Set Information.
ion (hereinafter referred to as VTSI) management information file and a video file composed of video data and VT
It consists of SI backup files.

In RTR-DVD, the VTSI and VM
The GIs come together and are configured as a new VMGI.

The video file has a hierarchical structure. As shown in FIG. 3, one file (VOBS) is composed of a plurality of VOBs, and one VOB is composed of a plurality of VOBs.
U, and one VOBU is composed of packs (video packs, audio packs) composed of a plurality of various types of data. A pack is composed of one or more packets and a pack header. FIG.
It is a figure showing the structure of OBS.

The order of data reproduction is PGC
(Program Chain), this PG
A plurality of PGs (Programs) are registered in C, a cell is registered in this PG, and a VOB is registered in the cell as an object to be reproduced.

The structure of the PGC is actually recorded in the PGCI. The reproduction process is performed according to the PGCI, and the PGCI is created at the time of recording or editing.

In the DVD-RAM, a special PGC for reproducing in the recording order is called an original PGC, and information of the original PGC is recorded in ORG_PGCI.

A pack is a minimum unit for performing data transfer processing. Further, the minimum unit for performing logical processing is a cell unit, and the logical processing is performed in this unit.

Next, the DV described above with reference to FIG.
An information recording / reproducing apparatus for reproducing information recorded on D and recording information such as a movie on a DVD will be described.

As shown in FIG. 1, the information recording / reproducing apparatus
MPU unit 10, display unit 12, decoder unit 20, encoder unit 30, TV tuner unit 41, STC unit (Syst
emTime Clock) 42, D-PRO unit 43,
An HDD buffer unit 44, a disk drive unit 45, a disk changer unit 46, and the like are provided.

The MPU unit 10 includes a free space detection unit 10a,
Storage capacity detection unit 10b, remaining time detection unit 10c, remaining capacity detection unit 10d, recording mode change unit 10e, display start time detection unit 10f, dummy pack insertion stop unit 10g, file organization unit 10h, disk exchange instruction unit 10i, exchange A time detection unit 10j, an unused capacity encoding unit 10k, and the like are provided.

The encoder section 30 includes an A / D section 31, a video encoding section 32, an audio encoding section 33,
A P encoding unit 34, a formatter unit 35, a buffer memory unit 36, and the like are provided. The decoder unit 20 includes a separating unit 21, a video decoding unit 22, an SP decoding unit 23,
Audio decoding unit 24, V-PRO unit 25, D / A
A section 26 and a D / A section 27 are provided.

The data processing in this information recording / reproducing apparatus is of two types: a recording process and a reproducing process.

The data processing at the time of recording is as follows.

First, when the MPU unit 10 receives a recording command,
The disk drive unit 45 determines an area where management data is read and written. Next, the management area is set so that the determined area is written, the write start address of the video data is set in the disk drive unit, and preparation for recording data is performed.

Next, MPU unit 10 resets the time to STC unit 42. Here, the STC unit 42 performs recording and playback based on this value using a timer of the system. Further, the MPU unit 10 performs other settings.

The flow of the video signal is as follows.

First, an A / D unit 31 converts an AV signal input from the TV tuner unit 41 or an external input into a digital signal. The digital signal is supplied to each encoding unit 32,
33 and 34 are input. The video signal is input to the video encoding unit 32, the audio signal is input to the audio encoding unit 33, and the text signal such as a closed caption signal or teletext is input to the SP encoding unit.

Each of the encoding units 32, 33, and 34 compresses each signal into packets (however, each packet is divided into packets of 2048 bytes per pack when they are packed), and the formatter unit 35 To enter. Here, each of the encoding units 32, 33,
34 is the PTS of each packet according to the value of the STC unit 42.
(Presentation Time Stam
p) Determine and record the DTS as needed.

The formatter unit 35 is a buffer memory unit 3
6, the packet data is temporarily stored, and then the input packet data is packed, mixed for each GOP, and input to the D-PRO unit 43.

The D-PRO unit 43 collects the ECC (Error Correction C
ode) and send it to the disk drive unit 45. However, if the disk drive 45 is not ready for recording, it is transferred to the HDD buffer 44 and waits until recording is ready, and starts recording when the preparation is completed.

When the recording ends, the necessary management information is updated in the VMGI table, the VMG in the disk is updated, the link information is recorded in the file system, and the recording operation ends.

Further, the formatter unit 35 creates each segmentation information during recording and sends it to the MPU unit 10 periodically (such as a GOP head interrupt). The segmentation information includes the number of VOBU packs, the end address of the I picture from the beginning of the VOBU, the playback time of the VOBU, and the like.
In a recording / reproducing DVD, a video file is one DIS file.
One file is stored in K.

In the information recording / reproducing apparatus, when accessing data recorded on a DVD, in order to continue reproduction without interruption during access (seek),
At least a continuous sector is required. This unit is called CDA (Continius Data aria). This CDA is
It is more advantageous to use the ECC block unit. For this reason, the CDA size is set to a multiple of 16, and the file system records data in CDA units. However,
In this case, when there is no free space of the size of the CDA in the disc, a short sector used by another file can also enter the CDA. Thereby, recording can be performed in CDA units. However,
The microcomputer can read and write the D-PRO unit 43 through the microcomputer bus in order to read and write the file management area and the like.

Further, data processing at the time of reproduction is as follows.

First, upon receiving a reproduction command, the MPU unit 10 reads the management area from the disk drive unit 45 through the D-PRO unit 43 and determines an address to be reproduced. Next, the MPU unit 10 sends the address of the data to be reproduced and the read command determined earlier to the disk drive unit 45. The disk drive unit 45 reads sector data from the disk in accordance with the sent command, and
The error is corrected by the unit 43, and the data is output to the decoder unit in the form of pack data.

In the decoder section 20, the read pack data is received by the separating section 21 and packetized. Video packet data (MPEG video data) is transferred to the video decoding section 22 according to the purpose of the data, and the audio packet The data is transferred to the audio decoding unit 24, the sub-picture packet data is transferred to the SP decoding unit 23, and the NV pack is stored in the internal memory 21a for processing by the MPU unit 10, and is always accessed by the MPU unit 10. Make it possible.

At the start of transfer, the transmitted packet data is loaded with the PTS into the STC 42 (the MPU unit 10 sets the PTS in the NV pack to the STC 42, or the video decoding unit 22 automatically PT
S is set in the STC 42), and then each of the decoding units 22, 23, 24 performs a reproduction process (while comparing the PTS and the STC value) in synchronization with the value of the PTS in the packet data, and outputs the sound to the TV. You can play videos with subtitles.

Here, the following method is used to determine the free space of the disk before the start of recording.

The recorded capacity is checked from the file system, and the value obtained by subtracting the recorded capacity from the total capacity of the DVD-RAM is the free capacity. For example, in a system using the FAT format, table data (F
From the ile allocation table), the number of unused clusters is derived, and the remaining number of bytes is derived by the following formula.

The number of unused clusters × the number of bytes of one cluster = free capacity The remaining capacity display during recording reads the data of the above free capacity and records the data obtained by subtracting the number of recorded data from the free capacity data. The remaining amount is referred to as a remaining amount (hereinafter referred to as a remaining amount).

Here, in order to determine the remaining amount during recording,
It is necessary to know the number of data recorded during recording. In this method, a value (the number of recording sectors) counted up each time one-pack recording operation is completed is stored in a memory (Recpack) by the MPU unit 10 in an interrupt process or the like, and when necessary (when the remaining amount is checked). Read that value.

When displaying the remaining amount during recording, the respective values obtained above are obtained by the following calculations.

Free space (number of sectors) −number of recorded data (sectors) = remaining amount during recording (sector) Thus, the remaining amount during recording can be calculated, and it is possible to detect that the remaining amount has decreased. .

Further, the following two methods can be considered as a method of informing the user of the remaining amount during recording.

The first method is to convert the remaining amount during recording into an expected remaining recordable time and display the remaining time on a TV screen or an FL display at all times. This is the method to be displayed when the is cut. The remaining recordable time is obtained by the following equation.

Remaining amount during recording (sector) / Average recording rate (sector / s) = Average remaining recordable time (s) However, the average recording rate used here is the recording rate specified first, and This is the first value to be set in the section, after which the average rate will be this value. However, in the MPEG compression, an error occurs because the rate changes depending on a picture. Therefore, when displaying the estimated remaining recordable time to be displayed on a TV or the like, it is displayed together with the average rate, and the user uses this value as a guide. Also, specify in a manual or the like that this value is never accurate.

In the second method, when the remaining capacity during recording falls below a certain capacity, it is displayed on a TV or the like as it is, or a warning is displayed on an LED, a buzzer or a TV provided in the main body to notify the user. .

Here, the entire recording process is shown in FIGS.
This will be described with reference to the flowchart shown in FIG.

ST1 to ST3: Clear the work RAM, read the file system, check if there is free space, and if there is no free space, display "no recording space" etc. and end the process I do.

ST4: The write address is determined by the file system so that the CDA area can be secured in the free area, and the free space is stored in the work RAM. ST5: Check whether there is a VMG, read it if it exists, and if not, generate it internally
Expand VMG table in AM.

ST6: Initial setting for recording is performed. More specifically, the reset of the STC section, the setting of the write start address in the disk drive section, the initial setting in the formatter section, and the setting of CELL, VOBU, PG, and PGC delimiters (alignment processing setting) are performed. In particular, VOBU separation information generation setting (1 GOP: 0.5 s), VOBU separation based on a change in the audio mode, and interrupt generation setting are performed.

ST7: A recording start command is set in the formatter unit.

ST8 to ST9: It is checked whether or not there is a cut-in information take-in interrupt, and if there is, take it in. The interrupt process is executed according to the flowchart shown in FIG. Here, the detailed description of the interrupt processing is omitted.

ST10: It is checked whether or not the recording end key has been entered, and if it has been entered, ST is executed to end this processing.
Move to 17.

ST11 to ST13: A process for calculating the remaining amount is performed, and it is checked whether or not the remaining amount has been reduced to a predetermined value.

ST14 to ST15: It is checked whether data for one CDA has accumulated in the buffer, and if so, the disc drive is set to record data for one CDA.

ST16: Check whether there is a remaining amount, and if there is, go to ST8.

ST17: The remaining segmentation information is read from the formatter unit, and the encoder unit is initialized.

ST18 to ST19: Check whether data is stored in the HDD buffer (whether the disk has been replaced), and if so, write the data in the HDD buffer to the disk and clear the HDD buffer. .

ST20: File system (management information)
Is updated, and if the data in the HDD buffer unit is recorded, the link information is configured so that the data comes at the head of the video file. The contents of the VMG table are
Update as a file. In this case, the VMG table includes PGCI information, VOBI information, and the like based on the segmentation information.

That is, if a disc is replaced while a series of data to be recorded is being recorded in real time together with management information, real time recording is resumed after the completion of the replacement. After the real-time recording is completed, the recording target data temporarily stored during the replacement is added to the disk, and the data added here is the data recorded before the disk replacement,
The management information is updated so as to be reproduced between the data recorded after disc replacement.

The causes of the interrupt include a process of counting up the number of recording packs, a process of setting a flag based on an interrupt prepared for the division information in the encoder unit, and a flag indicating that the audio mode has changed. Is set.

Next, the operation of the small remaining capacity processing will be described with reference to the flowchart shown in FIG. ST31: Check whether the free space has room for one CDA,
If not, the process proceeds to ST34.

ST32: It is checked whether or not an interrupt from the audio encoding unit has been entered (whether or not the audio mode has changed), and if it has not changed, the processing here is omitted.

ST33: VOBU with changed voice mode
Is set in the disk drive unit so that the data up to the point before is recorded on the DVD-RAM disk.

ST34: A disk exchange process (described later) is performed.

Thus, when the remaining capacity of the disk becomes small, the disk exchange process can be executed by the VOBU whose audio mode has changed. Further, the same processing is conceivable not only in the audio mode but also when a change point of a video is detected. This video change point is determined by the video encoding unit comparing the previous frame with the current frame, and when the change is drastic, separates the VOBU from that part and interrupts the MPO.
Notify U section 10. This processing is the same as in the case of a large motion vector in the MPEG encoder.

Even when there is no disk capacity, the replacement process can be executed.

The audio mode may be a stereo / monaural change, a sudden change in volume level, or the like. This is detected by the audio encoding unit by comparing the A / D-converted signals. Specifically, stereo / monaural is monaural when both the Rch and Lch audio data are exactly the same. If it is different, it is stereo. If the size of the audio data suddenly changes, it is detected as a change in volume level.

At this time, the encoder terminates the VOBU before the change of the audio mode occurs, processes the change so that the change is at the head of the VOBU, and returns an interrupt to the MPU unit 10.

Further, the disk exchange processing will be described. There are two types of disk exchange processing: a method using a changer and a method of having the user exchange the disk.

First, processing using a changer will be described.

In the actual operation, a disk exchange operation for the next empty disk is performed, and after the exchange is completed, the subsequent recording is resumed. At this time, the recording data during the exchange operation is H
After the replacement, the disk is checked. If there is free space, the recording process is restarted. At the end of the recording, the data in the HDD buffer is stored, and the file system is linked. The information should be at the beginning of the file. However, the data in the HDD buffer unit is recorded in CDA units.

It is also conceivable to record the same data for several VOBUs on the previous disk so that the data in the HDD buffer section is superimposed on the last recorded part. As a result, the meaning of the AV data can be given. In other words, data recorded on the optical disk and data that could not be recorded on the optical disk between the time the optical disk exchange request was issued and the completion of the optical disk exchange are held in CDA units, After the recording is completed, the data held here is recorded on the disc. Thereby, recording of partially duplicated data can be realized.

Further, if there is no disk to be replaced, the user is prompted to replace the disk within the time for which the capacity of the HDD buffer unit is sufficient, and if not, the recording process is stopped. When the recording process is stopped, the inside of the HDD buffer unit is cleared to prepare for the next process.

When the replacement is successful, the fact that the disk replacement process has been performed is displayed on a TV or the like, and the value is changed to a value obtained by increasing the remaining recordable time.

The operation at this time will be described with reference to the flowchart shown in FIG. 7 and the screen transition diagram shown in FIG.

ST41: As shown in FIG. 8, "disk exchange" is displayed on the TV screen.

ST42: Send a stop command to the drive unit.

ST43: Wait for a processing end status from the drive unit.

ST44: Transfer destination of encoded data is H
The data is stored in the CD buffer unit in the DD buffer unit.

ST45: Output a disk exchange command to the disk changer.

ST46: Wait for a processing end status from the disc changer. ST47: It is checked whether or not the disk exchange was successful, and if not ended, the process proceeds to ST53. When the disk exchange is successful, "end of disk exchange" and the like are displayed on the TV screen as shown in FIG.

ST48-49: Read the management data,
It is checked whether there is free space, and if there is no free space, the process proceeds to ST45.

ST50 to ST51: Determine the write address, save the free space in the work, and write information for recording in the management area.

ST52: The remaining time is displayed again, and the recording operation is restarted.

ST53: As shown in FIG. 8, the fact that there is no disc to be replaced is displayed on the TV screen, and the user is prompted to insert a disc.

ST54: It is checked whether or not the exchange has been performed. If the exchange has not been performed, the process proceeds to ST55.
Move to 48.

ST55: It is checked whether or not the replacement time has expired. If the time has not expired, the process proceeds to ST54, and if the time has expired, the process proceeds to ST56.

ST56: As shown in FIG. 8, a message indicating that the time has expired ("Changing was not completed in time. Recording will be stopped.") Is displayed, the recording operation is stopped, and the HDD buffer is cleared. Return to normal operation.

After the end of the normal recording, the data in the HDD buffer is moved to an empty area of the disk, and a link is provided so as to be at the head of the video file by the link information of the file system.

As a result, the disk can be exchanged, and recording can be resumed.

Second, when the disc changer is not attached, a replacement message requesting the user to change the disc is displayed, and when the free space of the disc being recorded is exhausted, the recording termination processing on the disc is performed. Do
Prompt for disk replacement. The stored data during that time is
The data is recorded in the buffer unit, and the user is informed that the disk should be replaced while the HDD buffer unit has the capacity.

The message at that time is shown in FIG. The black squares are displayed, and the black squares disappear one by one at regular intervals, and a request is made to replace the disk until all the black squares disappear.

Then, after the replacement of the disk is completed, the disk is checked, and if there is free space, the recording process is restarted. When the recording is completed, the data in the HDD buffer is stored and the link information of the file system is stored. So that it is located at the beginning of the file. However, the data in the HDD buffer is made to be in CDA units. In this case, if the exchange cannot be made in time, the recording mode is ended and the data in the temporary storage unit is also discarded.

The operation at this time will be described with reference to the flowchart shown in FIG. 9 and the screen transition diagram shown in FIG.

ST61: Send a stop command to the drive unit.

ST62: Wait for a processing end status from the drive unit.

ST63: The transfer destination of the encoded data is H
The data is stored in the CD buffer unit in the DD buffer unit.

ST64: Determine the number of black squares to be displayed (time bar).

ST65: As shown in FIG. 10, a time bar (a plurality of black squares) is displayed on the TV saying "Please insert disc".

ST66: It is checked whether or not the exchange has been performed. If the exchange has not been performed, the process proceeds to ST73.
Go to 67.

ST67: It is checked whether or not the replacement time has expired. If the time has not expired, the process proceeds to ST70. If the time has expired, the process proceeds to ST68.

ST70: It is checked whether or not it is time to erase the black square, and if it is time to erase it, the process proceeds to ST71, otherwise the process proceeds to S71.
The process moves to T66.

ST71 to ST72: As shown in FIG. 10, the display of the black square is deleted, and the value stored in the time bar is counted down by one and stored.

ST73 to ST74: The management data is read, and it is checked whether or not there is free space. At this time, as shown in FIG.
Displayed on the screen. If not, the process proceeds to ST75, and if there is, the process proceeds to ST76.

ST75: As shown in FIG. 10, a message indicating that there is no free space is displayed on the TV ("no free space available"), and the process proceeds to ST66.

ST76 to ST77: Determine the write address, save the free space in the work, and write information for recording in the management area.

ST78: The remaining time is displayed again, and the recording operation is restarted.

ST68 to ST69: As shown in FIG. 10, the time-out is displayed (“Exchange failed in time. Recording is stopped.”), The recording operation is stopped, and the HDD buffer is reset. Clear and return to normal operation.

After the end of the normal recording, the data in the HDD buffer section is moved to a free area of the disk, and a link is provided to the head of the video file by the link information of the file system.

Although the replacement time is represented by a black square, the replaceable time may be displayed in the form of time. This makes it easier for the user to know when to change disks, and allows recording to continue.

As described above, according to the present invention, the remaining capacity during recording is detected, and when the remaining capacity decreases, a smooth disk replacement process can be performed.

[0126]

According to the present invention, the following information recording device,
An information recording method and an optical disk exchange timing control method can be provided.

(1) An information recording apparatus for requesting that a disk be replaced while data that may be lost is provided in a series of data provided continuously.

(2) An optical disk exchange timing control method for requesting that the disk be exchanged while data that may be missing is provided in a series of data provided continuously.

(3) When the data to be recorded is recorded in real time, the data to be recorded is temporarily held during recording that cannot be recorded on the optical disk by disc exchange.
An information recording apparatus that records the recording target data on the optical disk later and updates the management information so that the recording target data recorded here is reproduced at a predetermined timing.

(4) When data to be recorded is recorded in real time, data to be recorded that cannot be recorded on an optical disk by disk exchange is temporarily held,
An information recording method of recording the recording target data on the optical disk later and updating the management information so that the recording target data recorded here is reproduced at a predetermined timing.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of an information recording / reproducing apparatus for reproducing information such as a movie recorded on a DVD and recording information such as a movie on a DVD.

FIG. 2 is a diagram illustrating an example of a directory structure of a DVD.

FIG. 3 shows a video object set (V
FIG. 3 is a diagram showing a data structure of an OBS).

FIG. 4 is a flowchart illustrating a recording process.

FIG. 5 is a flowchart showing an interrupt process.

FIG. 6 is a flowchart illustrating a process when the remaining capacity is low.

FIG. 7 is a flowchart showing a disk exchange operation using a changer.

FIG. 8 is a diagram showing an example of a message displayed on a screen in accordance with a disk exchange operation using a changer.

FIG. 9 is a flowchart showing a disk replacement operation without using a changer.

FIG. 10 is a diagram showing an example of a message displayed on a screen in accordance with a disk replacement operation without using a changer.

[Explanation of symbols]

 Reference Signs List 10 MPU unit 20 Decoder unit 30 Encoder unit 41 TV tuner unit 42 STC unit 43 D-PRO unit 44 HDD buffer unit 45 Disk drive unit 46 Disk changer unit

Continuing from the front page (72) Inventor Shuichi Hisatomi 1-3-3 Shinmachi, Ome-shi, Tokyo Toshiba Digital Media Engineering Co., Ltd. In-house (72) Inventor Takashi Nezu 70, Yanagimachi, Kochi-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Yanagimachi Plant Co., Ltd. F term (reference) 5C052 AA02 DD04 5C053 FA24 GA11 GB21 JA01 JA15 JA16 KA25 LA07 5D066 BA03 BA05 BA06 5D090 AA01 BB04 CC01 CC18 DD03 FF29 HH01

Claims (13)

[Claims] 1. A recording means for recording data on an optical disk, and a residual for detecting the remaining recordable capacity of the optical disk that changes with data recording when the recording means records data on the optical disk. Capacity detecting means, and it has been found that the remaining recordable capacity detected by the remaining capacity detecting means has become equal to or less than a predetermined capacity, and a change in certain characteristics of data recorded on the optical disc has been detected. Requesting means for requesting replacement of an optical disk to be recorded. 2. An accommodation device for accommodating a plurality of optical disks, a disk selection device for selecting a predetermined optical disk from the plurality of optical disks accommodated in the accommodation device, and a data storage device for storing data on the optical disk selected by the disk selection device. Recording means for recording information, an available capacity detecting means for detecting an available capacity of the optical disc selected by the disc selecting means, and a used capacity for detecting a capacity used by data recorded on the optical disc by the recording means. Detecting means; remaining capacity detecting means for detecting a recordable remaining capacity of the optical disc that changes with data recording from detection results of the free capacity detecting means and the used capacity detecting means; and detecting by the remaining capacity detecting means. When it is determined that the remaining recordable capacity has become less than the specified capacity, Requesting means for requesting an exchange of a disc; recording data change detecting means for detecting a change in a characteristic of audio data included in data to be recorded on the optical disc; Control means for causing the disc selecting means to select a new recording target disc when a change in a characteristic of the audio data is detected by the recording data change detecting means. apparatus. 3. The information recording apparatus according to claim 2, wherein said recording data change detecting means detects a change between stereo audio data and monaural audio data. 4. The information recording apparatus according to claim 2, wherein said recording data change detecting means detects a change in volume during a predetermined time. 5. An accommodating means for accommodating a plurality of optical discs, a disc selecting means for selecting a predetermined optical disc from the plurality of optical discs accommodated in the accommodating means, and an optical disc selected by the disc selecting means. Recording means for recording data on the optical disk, free space detecting means for detecting the free space of the optical disc selected by the disc selecting means, and detecting the capacity used by the data recorded on the optical disc by the recording means. Used capacity detecting means, remaining capacity detecting means for detecting a recordable remaining capacity of the optical disk that changes with data recording from detection results of the free capacity detecting means and the used capacity detecting means, and the remaining capacity detecting means When it is found that the remaining recordable capacity detected by Requesting means for requesting an exchange of an elephant optical disc; recording data change detecting means for detecting a change in a certain characteristic of video data included in data to be recorded recorded on the optical disc; Control means for causing the disc selecting means to select a new recording target disc when requested and when a change in a certain characteristic of the video data is detected by the recording data change detecting means. Information recording device. 6. A recording means for recording data on an optical disk, and a first recording means for recording, on a real time basis, a series of data to be recorded provided over a predetermined time by the recording means on the optical disk together with management information in CDA units. Control means; holding means for holding, in CDA units, data to be recorded that cannot be recorded on the optical disc while the optical disc is being exchanged; and a series of recording data to be provided for a predetermined time after the exchange of the optical disc is completed. A second recording control means for restarting the recording of the data and recording a series of data to be recorded on the optical disc exchanged together with the management information in real time on a CDA basis; and recording of a series of data to be recorded by the second recording control means Is completed, the data to be recorded held in the holding means is exchanged in CDA units. Update processing means for recording management data on the recorded optical disc, and updating the management information so that the data to be recorded on the way is reproduced before the data to be recorded recorded by the second recording control means. An information recording device characterized by the above-mentioned. 7. An accommodation means for accommodating a plurality of optical discs, a disc selection means for selecting a predetermined optical disc from the plurality of optical discs accommodated in said accommodation means, and an optical disc selected by said disc selection means. Recording means for recording data on the optical disk, free space detecting means for detecting the free space of the optical disc selected by the disc selecting means, and detecting the capacity used by the data recorded on the optical disc by the recording means. Used capacity detecting means, remaining capacity detecting means for detecting a recordable remaining capacity of the optical disk that changes with data recording from detection results of the free capacity detecting means and the used capacity detecting means, and the remaining capacity detecting means When it is found that the remaining recordable capacity detected by Requesting means for requesting replacement of an elephant optical disc; first recording control means for recording, on the optical disc together with management information, in real time, in a CDA unit, a series of recording target data provided over a predetermined time by the recording means; Holding means for holding, in a CDA unit, data to be recorded which cannot be recorded on the optical disc until the disc selecting means selects another optical disc and the exchange of the optical disc is completed, in response to an optical disc exchange request by the request means; After the exchange of the optical disc is completed, the recording of the series of recording target data provided for a predetermined time is restarted, and the series of recording target data is recorded in real time on the optical disc exchanged together with the management information in CDA units. Recording control means, and a series of recording objects by the second recording control means After the recording of the data is completed, the data to be recorded held in the holding means is recorded on the optical disc exchanged in CDA units, and the data to be recorded in the middle is recorded by the second recording control means. Update processing means for updating the management information so that the management information is reproduced before the data to be recorded. 8. The recording apparatus according to claim 6, further comprising: recording stop processing means for stopping recording when the data to be recorded cannot be held due to an excess amount of the holding means during replacement of the optical disk. Item 8. The information recording device according to Item 7. 9. A recording stop processing means for stopping the recording and deleting the data held in the holding means when the data to be recorded cannot be held due to the allowance of the holding means during the exchange of the optical disk. The information recording apparatus according to claim 6 or 7, wherein 10. A recording means for recording data on an optical disc, and a remaining capacity for detecting a recordable remaining capacity of the optical disc which changes with data recording when data is recorded on the optical disc by the recording means. A capacity detecting means, a requesting means for requesting replacement of an optical disc to be recorded when it is found that the remaining recordable capacity detected by the remaining capacity detecting means has become equal to or less than a predetermined capacity, and First recording control means for recording a series of data to be recorded continuously provided for a predetermined period of time on the optical disk together with management information in CDA units in real time; and Part of the data to be recorded recorded on the optical disk and recording on the optical disk until completion Holding means for holding the data to be recorded in units of CDA that cannot be written, and restarting the recording of a series of data to be provided which is provided for a predetermined time after the exchange of the optical disk is completed. A second recording control means for recording on the optical disk exchanged together with the management information in the step; and after the recording of a series of recording target data is completed by the second recording control means, the recording target data held in the holding means is Recording on an optical disc exchanged in CDA units,
Update processing means for updating management information so that the recording target data recorded here is reproduced before the recording target data recorded by the second recording control means. Recording device. 11. When data is recorded on an optical disc, a first step of detecting a recordable remaining capacity of the optical disc that changes with the recording of the data; and a recordable state detected by the first step. A second step of requesting replacement of an optical disc to be recorded when it is determined that the remaining capacity has become equal to or less than a predetermined capacity, and a change in certain characteristic of data recorded on the optical disc is detected; An optical disk exchange timing control method, comprising: 12. A first step of detecting a free space of an optical disc to be recorded and detecting a capacity used by recording data recorded on the optical disc to be recorded, and from a detection result of the first step. A second step of detecting the remaining recordable capacity of the optical disc to be recorded that changes with the recording of the recording data; and the remaining recordable capacity detected in the second step has become equal to or less than a predetermined capacity. And a third step of exchanging the optical disc to be recorded when it is determined that there is a change in a characteristic of data recorded on the optical disc. Method. 13. A first step of recording a series of data to be recorded, which is provided over a predetermined time, together with management information in real time on a CDA basis on an optical disk, and recording that cannot be recorded on the optical disk while the optical disk is replaced. Second to hold target data in CDA units
And after the exchange of the optical disk is completed, the recording of the series of recording target data provided for a predetermined time is restarted, and the series of recording target data is recorded in real time on the exchanged optical disk together with the management information in CDA units. A third step, and after the recording of the series of data to be recorded is completed by the third step, the optical disc in which the intermediate data to be recorded included in the previously held series of data to be recorded has been exchanged in CDA units. And a fourth step of updating the management information so that the recording target data on the way is reproduced before the recording target data recorded in the third step. Information recording method.