JP2000090578A - Data recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an omitted part to be recovered and also a desired program to be recorded in a recording medium by using the recording medium whose free capacity is small in a data recorder. SOLUTION: When the recording of main data is started, a system controller 17 counts an elapsed time and also monitors whether the elapsed time is within the range of a prescribed time or not and whether a selective recording button is operated or not and when the elapsed time is within the prescribed time and the selective recording button is not operated, the controller 17 temporarily stores the address and the track number of the recorded main data in the memory in the inside of the controller as tentative TOC data. Then, when the selective recording button is operated, the controller reads out the tentative TOC data from the memory of the side of the controller to display them on a display 19 and determines a track number or a real time which is to be made effective by the selected input from an input operating part 18 based on display contents of the display 19 and an introduction reproduction or the like and records only the TOC data of the selected and determined track in the UTOC area of a mini disk 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a data recording apparatus using a recording medium having a main data recording area and a management data recording area.

[0002]

2. Description of the Related Art Conventionally, as a data recording apparatus using a recording medium having a main data recording area and a management data recording area, a main data such as music information and a track number (track) are recorded using a magneto-optical disk or a semiconductor memory. ) And management data such as an address on the main data of the song designated by the song number.

In such a data recording apparatus, when a specific track or program is to be recorded, a track to be recorded or a program for designating a recording start time and an end time is recorded, or an undesired track is recorded. Alternatively, after recording everything including the program, undesired tracks or time zones are deleted by editing work.

[0004]

However, in the above-mentioned conventional apparatus, for example, when recording a radio broadcast program, if the time zone in which the desired program is to be broadcast is unknown, a program for designating the recording time cannot be made. Since it is necessary to continuously record the desired program together and extract and edit only the desired program later, more recording space for unnecessary programs is required compared to the time of the desired program, and a recording medium with a large free space is required. There is a problem that you need
Even if the desired program is selected and recorded while monitoring the program to be recorded, the timing of the recording operation is delayed and the beginning of the desired program is missing or judged unnecessary at the beginning of the program However, after monitoring for a while, if there is a necessary program including the top part, there is a problem that the missing part cannot be recovered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a data recording apparatus capable of recovering a missing portion and recording a desired program using a recording medium having a small free space.

[0006]

According to an aspect of the present invention, there is provided an apparatus for managing a main data recording area for recording main data and a recorded area and a recordable area in the main data recording area. And a management data recording area for recording management data to be recorded.
In a data recording device for recording main data and management data, when recording of main data on the recording medium is started, when a selective recording instruction is given within a predetermined time, the data is recorded on the basis of the content of the selective recording instruction. A control means for determining an effective area of the main data recorded on the recording medium and recording the management data of the effective area of the main data on the recording medium is provided.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the control means issues a selective recording instruction within a predetermined time after the recording of the main data on the recording medium is started. When there is no main data, the recording position of the main data is returned to the position where the recording of the main data was started, and the overwriting recording is started.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the control means sets the recordable time of the main data recording area to the predetermined time. .

According to a fourth aspect of the present invention, there is provided a recording apparatus having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording device that records main data and management data on a medium, when recording of the main data on the recording medium is started, when a first predetermined time has elapsed, a request for a selective recording instruction is issued, Thereafter, when a selective recording instruction is issued within the second predetermined time, an effective area of the main data recorded on the recording medium is determined based on the content of the selective recording instruction, and the effective area of the main data is managed. A control means for recording data on the recording medium is provided.

According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, when the control means does not receive a selective recording instruction within the second predetermined time, the main data recording position is changed to the main data recording position. Is returned to the position where the recording was started, and the overwriting recording is started.

According to a sixth aspect of the present invention, in addition to the configuration of the fourth or fifth aspect, the control means subtracts the second predetermined time from the recordable time of the main data recording area. The obtained time is the first predetermined time.

According to a seventh aspect of the present invention, there is provided a recording apparatus having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording apparatus for recording main data and management data on a medium, a detecting means for detecting a break of the main data and a control means for updating a track number based on a detection signal from the detecting means are provided. On the other hand, when the control unit receives a selective recording instruction before the number of track updates reaches the predetermined number after the recording of the main data on the recording medium is started, the control unit performs the processing based on the content of the selective recording instruction. The effective area of the main data recorded on the recording medium is determined, and the management data of the effective area of the main data is described above. It is intended to record on the medium.

According to an eighth aspect of the present invention, in addition to the configuration of the seventh aspect of the present invention, the control means may be arranged such that the number of track updates reaches a predetermined number after recording of the main data on the recording medium is started. If there is no selection recording instruction before the recording is completed, the recording position of the main data is returned to the position where the recording of the main data was started, and the overwriting recording is started.

According to a ninth aspect of the present invention, there is provided a recording apparatus having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording apparatus for recording main data and management data on a medium, a detecting means for detecting a break of the main data and a control means for updating a track number based on a detection signal from the detecting means are provided. On the other hand, when the control unit starts recording the main data on the recording medium and the track update count reaches a predetermined count,
Requesting a selective recording instruction, and thereafter, when the selective recording instruction is received within a predetermined time, determine the effective area of the main data recorded on the recording medium based on the content of the selective recording instruction, and The management data of the effective area is recorded on the recording medium.

According to a tenth aspect of the present invention, in addition to the configuration of the ninth aspect of the present invention, the control means sets the main data recording position to the main data recording position when there is no selective recording instruction within the predetermined time. It returns to the starting position and starts overwriting recording.

Therefore, according to the first aspect of the present invention, when there is a selective recording instruction within a predetermined time after the recording of the main data on the recording medium is started, the control means causes the content of the selective recording instruction to be changed. By determining the effective area of the main data recorded on the recording medium on the basis of the above and recording the management data of the effective area of the main data on the recording medium, the main data can be recorded retroactively.

According to the second aspect of the present invention, when the recording of the main data on the recording medium is started and there is no selective recording instruction within a predetermined time, the control means sets the recording position of the main data to the main data. By returning the recording to the position where the recording was started and starting the overwriting recording, it is possible to reliably hold the main data until a predetermined time ago with a small free space.

According to the third aspect of the present invention, the control means sets the recordable time of the main data recording area in the recording medium to the predetermined time, thereby automatically holding more main data. it can.

According to the fourth aspect of the present invention, when the first predetermined time has elapsed after the start of the recording of the main data on the recording medium, the control means requests a selective recording instruction. When there is a selective recording instruction within the predetermined time of 2,
The effective area of the main data recorded on the recording medium is determined based on the content of the selective recording instruction, and the management data of the effective area of the main data is recorded on the recording medium, so that the main data is recorded retroactively. Can be done.

According to the fifth aspect of the present invention, when the first predetermined time has elapsed after the start of the recording of the main data on the recording medium, the control means requests the selective recording instruction, and thereafter, When there is no selective recording instruction within the predetermined time period 2, the main data recording position is returned to the position where the main data recording was started and the overwriting recording is started. The data can be reliably held, and the necessity of the main data to be erased can be confirmed.

According to the sixth aspect of the present invention, the time obtained by subtracting the second predetermined time from the recordable time of the main data recording area in the recording medium is set as the first predetermined time. Accordingly, it is possible to confirm whether or not the main data to be erased is necessary while automatically retaining more main data without causing any interruption in the main data.

According to the seventh aspect of the present invention, when the recording of the main data on the recording medium is started and the selective recording instruction is given before the number of track updates reaches the predetermined number, the control means sets the number of times of updating. The effective area of the main data recorded on the recording medium is determined based on the content of the selective recording instruction, and the management data of the effective area of the main data is recorded on the recording medium, so that the main data is recorded retroactively. be able to.

According to the eighth aspect of the present invention, after the recording of the main data on the recording medium is started, if there is no selective recording instruction before the number of track updates reaches the predetermined number,
The control means returns the recording position of the main data to the position where the recording of the main data was started and starts the overwriting recording, so that the main data can be reliably held up to a predetermined track before with a small free space.

According to the ninth aspect of the present invention, when the number of track updates reaches a predetermined number after the main data recording on the recording medium is started, the control means requests a selective recording instruction. When a selective recording instruction is issued within a predetermined time, an effective area of the main data recorded on the recording medium is determined based on the content of the selective recording instruction, and management data of the effective area of the main data is recorded on the recording medium. By doing so, the main data can be recorded retroactively.

According to the tenth aspect of the present invention, when the number of track updates reaches a predetermined number after the main data recording on the recording medium is started, the control means requests a selective recording instruction. When there is no selective recording instruction within the predetermined time, the main data recording position is returned to the position where the main data recording was started to start overwrite recording, so that the main data can be retained up to a predetermined track before with a small free space. Can be reliably performed, and the necessity of a track to be erased can be confirmed.

[0026]

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

FIG. 1 is a schematic functional block diagram showing an electrical configuration of a magneto-optical disk device according to an embodiment of the data recording device of the present invention, and FIG. 2 is a diagram showing an operation control during data recording in the magneto-optical disk device. Flowchart showing an example,
3 is an explanatory diagram showing a state of recording data in the magneto-optical device, FIG. 4 is an explanatory diagram showing a display example at the time of selective recording input in the magneto-optical disk device, and FIG. 9 is a flowchart showing another example of the operation control of FIG.

Hereinafter, a magneto-optical disk drive according to an embodiment of the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a magneto-optical disk drive,
Reference numeral 2 denotes an A / D converter for converting an analog input signal to which a sound to be recorded is input into a digital signal, and reference numeral 3 denotes a signal processing LS.
I, a compression / decompression circuit 4 for performing digital data processing such as audio compression encoding, a memory controller 5 for controlling data writing to the semiconductor memory 8 and data reading from the semiconductor memory 8, and an EFM (Eight to Fourteen
n Modulation) An encoder / decoder 6 for performing digital data processing such as encoding, and a level detector 7 for comparing and detecting, at a digital level, the level of the audio to be recorded and a prescribed threshold value.

Reference numeral 8 denotes a memory constituted by a semiconductor memory LSI for temporarily storing data, and 9 denotes a recording head 10
, A magnetic head for writing data to the disk 11b, and a mini-disk 11 containing a disk 11b having a diameter of 64 mm in a cartridge 11a. The address of recorded data and recordable area information, etc. Are managed and recorded in the UTOC area as index information.

Reference numeral 12 denotes an optical pickup for irradiating the disk 11b with a light beam and receiving return light.
Denotes a spindle motor for rotating the disk 11b,
4 is a feed motor for moving the pickup 12 in the radial direction of the disc, and 15 is the position of the pickup 12 and the disc 1
1b is a servo control circuit for controlling the rotation speed;
This is an RF circuit including a detection circuit for detecting the M audio level at an analog level.

Reference numeral 17 denotes a microcomputer or a microprocessor, which controls the disk and controls the UTOC such as recording time and recording track number.
A system controller that manages information, an input operation unit 18 including a switch or the like for a user to perform an input operation;
Reference numeral 19 denotes a display for displaying TOC information such as a time for selective recording, a track number, and a song name. Reference numeral 20 denotes a D / A converter for converting a digital signal restored at the time of reproduction into an analog signal.

The system controller 17 controls the system of the magneto-optical disk drive 1 and manages the time and track number required for the operation in accordance with the input instruction from the input operation unit 18 and receives the input instruction to the user. The track number is controlled by the output of the level detector 7 when the level of the audio to be recorded falls below the specified value and exceeds the specified value again for a certain period of time. The operation of updating the track numbers to be recorded one by one sequentially is performed, and the operation of updating the track numbers may be the same as the operation of detecting the silent period provided in the conventional recording / reproducing apparatus. Further, the system controller 17 compares the predetermined recording time and the track number specified by the input with the current time indicating the position on the disk or the current track number.

The audio signal from the audio input terminal is A /
After being converted into a digital signal by the D converter 2, the signal processing L
The data is sent to the SI 3, where the audio is compressed by the decompression / compression circuit 4, and the memory 8 for absorbing the difference between the transfer rate of the data input from the outside and the transfer rate of the data recorded on the disk 11 b is stored in the memory 8. While the used digital data is temporarily stored, the compressed digital signal temporarily stored in the memory 8 is fetched by the memory controller 5 and then EFM-encoded in the encoder / decoder 6.
The data is supplied to the recording head 10 through the head drive 9 and is recorded on the disk 11b by the interaction between the recording head 10 and the light beam from the pickup 12.

Next, an example of the operation at the time of data recording in the magneto-optical disk device configured as described above will be described with reference to the flowchart shown in FIG. 2 and the explanatory diagrams shown in FIGS.

When the recording start button of the input operation unit 18 is operated by the user, the system controller 17 starts a recording mode, and inputs necessary settings for the mode and user selection conditions (step S1).

The input of the user selection condition is performed by starting the recording operation and then returning to the position where the recording was started and managing the turning point at which the overwrite recording is performed by time, or by updating the track updated by detecting the inter-song signal. In addition to selecting and setting whether to manage by number, a predetermined time t1 is set based on the selection.
Alternatively, a predetermined number of tracks n is specified and input,
The setting is performed by the display for input by the user using the display 19 and the key detection.

If time comparison is selected in the time comparison / track number comparison setting, the predetermined time t1
In the specification input, it is possible to select whether to input a numerical value of time or to specify a recordable time of an empty area of the mounted mini-disc 11. In this case, when the numerical value of time is input When the input time value is longer than the recordable time of the free area of the loaded mini-disc 11, the recordable time and a warning display are displayed on the display 19 to notify the user. It is good to

When the user's selection conditions are input and the setting is completed, the system controller 17 controls the head drive 9 and the feed motor 14 to control the recording head 10.
Then, the pickup 12 is moved to a recording start position of the main data (the head of the recordable free area of the mounted mini-disc 11 and the track N1) to be in a recording pause state (step S2). In this state, when the recording start button is operated (step S3), the input signal is used as the main data in the track N1.
Recording is performed from the beginning of (N) (step S4).

When the recording of the main data is started, the system controller 17 monitors the inter-signal signal of the input signal and updates the recording track every time the inter-signal signal is detected (N ← N + 1). The number of updates (M) and the elapsed time (T) are counted (step S5), and whether the number of updates (M) or the elapsed time (T) is within a predetermined number of tracks n or a predetermined time t1 is determined. (Step S6) and whether or not the selection record button is operated is monitored (Step S7), and the number of updates (M) or the elapsed time (T) is within a predetermined track number n or a predetermined time t1. If the selection record button is not operated, the address data and track number of the recorded main data are used as temporary TOC data in the system controller 17. Temporarily stored in the memory.

When the stored content exceeds the storage capacity of the memory in the system controller 17, a part of the memory 8 may be used for this storage area.
This temporary TOC data is displayed on the display 19,
The user may be notified of the current recording state.

On the other hand, after the recording of the main data is started, if the number of updates (M) or the elapsed time (T) exceeds the range of the predetermined number of tracks n or the predetermined time t1 (step S6), the system controller 17 controls the head drive 9 and the feed motor 14 to move the recording head 10 and the pickup 12 to the main data recording start position (the head of the recordable free area of the mounted mini-disc 11 and the track N1). Move (Step S
8) together with the input signal as the main data in the track N
Is recorded from the beginning (N1) of the data (step S4), and thereafter, the above-described operation control (steps S5 to S7) is performed again.

At this time, the address data of the overwritten area gives priority to the subsequent data, and the track before overlapping with the overwritten area is invalidated and discarded in track units.
The OC data is updated and stored in the memory in the system controller 17, and the number of updates (M) and the elapsed time (T) are reset.

On the other hand, after the recording of the main data is started, when the selection recording button is operated (step S7),
The system controller 17 is the system controller 1
The temporary TOC data is read out from the memory in the memory 7 and displayed on the display 19, and the track number or the real time to be validated by the selection input from the input operation unit 18 based on the display content of the display 19 and intro reproduction is determined ( Step S9), TOC of this selected and determined track
Only data is recorded in the UTOC area of the mini disk 11 (step S10).

The determination of the track number or the real time by the selection input uses the 60-minute mini-disc 11 in which 30 minutes are already stored in the track numbers 1 to 9 as shown in FIG. In this case, the recording time of tracks newly recorded on the mini disc 11 is 5 minutes 3
In the case where programs of 0 seconds, 4 minutes 30 seconds, 6 minutes 20 seconds, 4 minutes 40 seconds, and 9 minutes 0 seconds are stored as temporary TOC data as track numbers 10, 11, 12, 13, and 14,
As shown in FIG. 3, the display 19 displays data including a selection field, a track number before selection, an address time, a recording time, a track number after selection, and an intro reproduction selection field. When the user confirms the display content displayed on the display 19 and enters the * mark in the selection field with the cursor button and the enter button of the input operation unit 18, the user selects ON of the intro reproduction when confirming the content in the intro reproduction. When the selected content is selected while checking the recorded contents of the head portion of the track while reproducing (the tracks 10, 12, and 14 are selected in FIG. 3), a new track number is given by the selected track (in FIG. 3, the track 10 is selected). , 12, and 14 change to tracks 10, 11, and 12, and the rest changes to empty areas (in FIG. 3, tracks 11, 11 and 12 change). 3 is a change in the free space). The state of the track after this operation is as shown in (2) of FIG. 2, and the contents are recorded in the UTOC area of the mini disk 11, and as a result, the track state of the mini disk 11 after the selective recording is changed. Apparently, as shown in (3) of FIG.
50 minutes and 50 seconds, track 12 was recorded, and 9
An empty area of minute 10 seconds (actually, an invalid area is generated in a cluster which is a recording unit, and therefore less than 9 minutes 10 seconds) is present.

When the TOC data is recorded in the UTOC area of the mini-disc 11, the system controller 17 selects whether or not to continue the recording mode (step S11). Is stored and continued, the track number obtained by adding the track number N1 and the number of track numbers to be validated (N2) is set as the recording start track N1 (step S1).
2) By controlling the head drive 9 and the feed motor 14, the recording head 10 and the pickup 12 are moved to the head of the recording start track N1 to be in a recording pause state (step S2), and thereafter, the above-described operation control (step S3) ~ S1
Perform 1).

Therefore, according to the above operation control, the recording of the main data on the mini-disc 11 can be performed retroactively, while the recording of the main data on the mini-disc 11 starts within a predetermined time after the recording of the main data is started. Alternatively, when there is no selective recording instruction within the predetermined number of tracks, the recording position of the main data can be returned to the position where the recording of the main data has started, and the overwriting recording can be started.

Next, another example of the data recording operation of the magneto-optical disk drive configured as described above is shown in FIG.
This will be described based on the flowchart shown in FIG.

When the recording start button of the input operation unit 18 is operated by the user, the system controller 17 starts a recording mode, and inputs settings necessary for the mode and user selection conditions (step S21).

The input of the user selection condition is performed after the start of the recording operation, by returning to the position where the recording was started and managing the return point at which the overwrite recording is performed by time, or by updating the track updated by detecting the inter-song signal. In addition to selecting and setting whether to manage by number, a predetermined time t1 is set based on the selection.
Alternatively, a predetermined number of tracks n and a predetermined time t2 are specified and input, and the setting is performed by a display for inputting by the user using the display 19 and key detection.

If time comparison is selected in the time comparison / track number comparison setting, the predetermined time t2
The predetermined time t1 may be automatically set in response to the specified input, and at this time, the specified time t1
The time obtained by subtracting from the recordable time of the free area of the mini-disc 11 on which the mini disk 2 is mounted is preferably a predetermined time t1.

When the user selection conditions are input and the setting is completed, the system controller 17 controls the head drive 9 and the feed motor 14 to control the recording head 10.
Then, the pickup 12 is moved to the recording start position of the main data (the head of the recordable free area of the mounted mini-disc 11 and the track N1) to be in the recording pause state (step S22), and thereafter, this recording pause is performed. In this state, when the recording start button is operated (step S23), the input signal is recorded as main data from the beginning of the track N1 (N) (step S24).

When the recording of the main data is started, the system controller 17 monitors the inter-signal signal of the input signal and updates the recording track every time the inter-signal signal is detected (N ← N + 1). The number of updates (M) and the elapsed time (T) are counted (step S25), and whether the number of updates (M) or the elapsed time (T) is within a predetermined number of tracks n or a predetermined time t1 is determined. (Step S26) and whether or not the selection record button has been operated is monitored (Step S27), and the number of updates (M) or the elapsed time (T) is within a predetermined track number n or a predetermined time t1. If the selection recording button is not operated, the address data and track number of the recorded main data are used as temporary TOC data in the system controller. Temporarily stored in the memory in the 7.

On the other hand, if the number of updates (M) or the elapsed time (T) exceeds the range of the predetermined number of tracks n or the predetermined time t1 after the main data recording is started (step S26), the system controller 17 starts counting of the predetermined time t2 (step S28), and the counted time t is set to the predetermined time t2.
Is monitored (step S29) and whether the selection record button is operated is monitored (step S30).

Then, the counted time t exceeds the range of the preset predetermined time t2 (step S2).
9), the system controller 17 controls the head drive 9 and the feed motor 14 to move the recording head 10 and the pickup 12 to the main data recording start position (the top of the recordable empty area of the mounted mini-disc 11; (Step S31), and the input signal is recorded as main data from the beginning (N1) of the track N (Step S24). Thereafter, the above-described operation control (Steps S25 to S30) is performed again. .

At this time, the address data in the overwritten area gives priority to the subsequent data, and the track before overlapping with the overwritten area is invalidated and discarded in track units.
The OC data is updated and stored in the memory in the system controller 17, and the number of updates (M) and the elapsed time (T) are reset.

On the other hand, after the recording of the main data is started, the selection recording button is operated (steps S27 and S27).
30), the system controller 17 reads out the temporary TOC data from the memory in the system controller 17, displays it on the display 19, and is enabled by the selection input from the input operation unit 18 based on the display contents of this display 19 and intro reproduction. Is determined (step S32), and only the TOC data of the selected and determined track is recorded in the UTOC area of the mini disk 11 (step S33).

When the TOC data is recorded in the UTOC area of the mini-disc 11, the system controller 17 selects whether or not to continue the recording mode (step S34). Is stored and continued, a track number obtained by adding the track number N1 and the number of track numbers to be validated (N2) is set as the recording start track N1 (step S3).
5) By controlling the head drive 9 and the feed motor 14, the recording head 10 and the pickup 12 are moved to the head of the recording start track N1 to be in a recording pause state (step S22), and thereafter, the above-described operation control (step S23) ~ S
34) is performed.

Therefore, according to the above operation control, the recording of the main data on the mini-disc 11 can be performed retroactively, while the recording of the main data on the mini-disc 11 starts within a predetermined time after the start of the recording. Alternatively, when there is no selective recording instruction within the predetermined number of tracks, the recording position of the main data can be returned to the position where the recording of the main data has started, and the overwriting recording can be started, and before starting the overwriting recording, Thus, it is possible to prompt the user to confirm data that will be lost in the overwrite recording.

In the above embodiment, a magneto-optical disk device has been described as a data recording device. However, the present invention is not limited to this, and can be similarly applied to a data recording device using a semiconductor memory. Needless to say.

[0061]

As described above, according to the first aspect of the present invention, when a selective recording instruction is given within a predetermined time after the recording of main data on a recording medium is started, the selective recording instruction is issued. By determining the effective area of the main data recorded on the recording medium on the basis of the content of the data and recording the management data of the effective area of the main data on the recording medium, the main data can be recorded retroactively. Therefore, for example, when selecting and recording a desired program while monitoring the program to be recorded, the timing of the recording operation is delayed, and the beginning of the desired program is missing, or unnecessary at the beginning of the program. Even when it is determined that the determined program is a necessary program later, the program desired by the user can be reliably recorded.

According to the second aspect of the present invention, after the recording of the main data on the recording medium is started, if there is no selective recording instruction within a predetermined time, the recording position of the main data is started. By starting the overwrite recording by returning to the position where the main data is stored, the main data can be reliably held until a predetermined time ago with a small free space.
A desired program can be reliably recorded without requiring a recording medium having a large free space.

According to the third aspect of the present invention, by setting the recordable time of the main data recording area in the recording medium to a predetermined time, it is possible to automatically hold more main data. A complicated operation by a user can be omitted, and operability can be improved.

According to the fourth aspect of the present invention, when the first predetermined time elapses after the recording of the main data on the recording medium is started, a selective recording instruction is requested, and then the second recording instruction is issued.
When the selective recording instruction is issued within the predetermined time, the effective area of the main data recorded on the recording medium is determined based on the content of the selective recording instruction, and the management data of the effective area of the main data is recorded on the recording medium. By recording, the main data can be recorded retroactively. For example, when a desired program is selected and recorded while monitoring the program to be recorded, the timing of the recording operation may be delayed. Even if the beginning of the program to be executed is missing or the program determined to be unnecessary at the beginning of the program is determined to be a necessary program later, the program desired by the user can be reliably recorded.

According to the fifth aspect of the present invention, when the first predetermined time elapses after the recording of the main data on the recording medium is started, a selective recording instruction is requested, and then the second recording instruction is issued.
When there is no selective recording instruction within the predetermined time, the main data recording position is returned to the position where the main data recording was started to start overwriting recording, so that the main data can be retained until a predetermined time ago with a small free space. Of the main data to be erased, and the necessity of the main data to be erased can be confirmed, so that the desired program can be reliably recorded without using a recording medium having a large free space, and It is possible to prevent the necessary main data from being erased without the knowledge of the user.

According to the sixth aspect of the present invention, the time obtained by subtracting the second predetermined time from the recordable time of the main data recording area on the recording medium is defined as the first predetermined time. Maintains more main data automatically without any data loss, and confirms the necessity of the main data to be deleted, eliminating complicated operations by the user and improving operability. Can be improved.

According to the seventh aspect of the present invention, when the recording of the main data on the recording medium is started, and when the selective recording instruction is issued before the number of track updates reaches the predetermined number, the selective recording instruction is issued. By determining the effective area of the main data recorded on the recording medium on the basis of the content of the data and recording the management data of the effective area of the main data on the recording medium, the main data can be recorded retroactively. Therefore, for example, when selecting and recording a desired program while monitoring the program to be recorded, the timing of the recording operation is delayed, and the beginning of the desired program is missing, or unnecessary at the beginning of the program. Even when it is determined that the determined program is a necessary program later, the program desired by the user can be reliably recorded.

According to the eighth aspect of the present invention, after the recording of the main data on the recording medium is started, if there is no selective recording instruction before the number of track updates reaches the predetermined number,
By returning the recording position of the main data to the position where the recording of the main data was started and starting the overwriting recording, the main data can be reliably held up to a predetermined track before with a small free space. A desired program can be reliably recorded without requiring a large recording medium.

According to the ninth aspect of the present invention, when the number of track updates reaches a predetermined number of times after the main data recording on the recording medium is started, a selective recording instruction is requested. When a selective recording instruction is issued, the effective area of the main data recorded on the recording medium is determined based on the content of the selective recording instruction, and the management data of the effective area of the main data is recorded on the recording medium. Since the main data can be recorded retroactively, for example, when monitoring a program to be recorded and selecting a desired program for recording,
Even if the start of the desired program is missing due to a delay in the recording operation timing, or if the program determined to be unnecessary at the beginning of the program is later determined to be a necessary program, the program desired by the user can be reliably determined. Can be recorded.

According to the tenth aspect of the present invention, when the number of track updates reaches a predetermined number after the start of recording of the main data on the recording medium, a selective recording instruction is requested,
Thereafter, when there is no selective recording instruction within the predetermined time, the recording position of the main data is returned to the position where the recording of the main data was started, and the overwriting recording is started. Can be reliably held, and the necessity of the track to be erased can be checked. Therefore, the desired program can be reliably recorded without the need for a recording medium having a large free space, It is possible to prevent the necessary main data from being erased without the user's knowledge.

[Brief description of the drawings]

FIG. 1 is a schematic functional block diagram showing an electrical configuration of a magneto-optical disk device which is an embodiment of a data recording device according to the present invention.

FIG. 2 is a flowchart showing an example of operation control during data recording in the magneto-optical disk device.

FIG. 3 is an explanatory diagram showing a state of recording data in the magneto-optical device.

FIG. 4 is an explanatory diagram showing a display example at the time of selective recording input in the magneto-optical disk device.

FIG. 5 is a flowchart showing another example of operation control during data recording in the magneto-optical disk device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magneto-optical disk drive 2 A / D converter 3 Signal processing LSI 4 Compression / expansion circuit 5 Memory controller 6 Encoder / Decoder 7 Level detector 8 Memory 9 Head drive 10 Magnetic head 11 Mini disk 12 Pickup 13 Spindle motor 14 Feed motor Reference Signs List 15 servo control circuit 16 RF circuit 17 system controller 18 input operation unit 19 display 20 D / A converter

Claims (10)

[Claims] 1. A recording medium having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording device for recording data and management data, after recording of main data on the recording medium is started,
When a selective recording instruction is issued within a predetermined time, an effective area of main data recorded on the recording medium is determined based on the content of the selective recording instruction, and management data of the effective area of the main data is transmitted to the recording medium. A data recording apparatus, comprising: a control unit for recording data on a recording medium. 2. The control means according to claim 1, wherein, when the recording of the main data on the recording medium is started, if there is no selective recording instruction within a predetermined time, the recording position of the main data is changed to a position at which the recording of the main data is started. 2. The data recording apparatus according to claim 1, wherein the data recording apparatus is returned to the start mode to start overwriting. 3. The data recording apparatus according to claim 1, wherein the control unit sets a recordable time of the main data recording area to the predetermined time. 4. A recording medium having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording device for recording data and management data, after recording of main data on the recording medium is started,
When the first predetermined time has elapsed, a selective recording instruction is requested, and when the selective recording instruction is issued within the second predetermined time, the main recording is performed on the recording medium based on the content of the selective recording instruction. Determine the effective area of the data,
A data recording apparatus, further comprising control means for recording management data of an effective area of the main data on the recording medium. 5. The method according to claim 1, wherein the control means returns the main data recording position to the position where the main data recording was started and starts overwrite recording when there is no selective recording instruction within the second predetermined time. The data recording apparatus according to claim 4, wherein 6. The control device according to claim 1, wherein the control unit sets a time obtained by subtracting the second predetermined time from a recordable time of the main data recording area as the first predetermined time. The data recording device according to claim 4 or 5. 7. A recording medium having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording apparatus for recording data and management data, a detection unit for detecting a break of the main data and a control unit for updating a track number based on a detection signal from the detection unit are provided. After the recording of the main data on the recording medium was started, when a selective recording instruction was given before the number of track updates reached the predetermined number, the recording was performed on the recording medium based on the content of the selective recording instruction. Determine the effective area of the main data and record the management data of the effective area of the main data on the recording medium. And a data recording device. 8. When the main data recording on the recording medium is started and the selective recording instruction is not issued within a predetermined number of track updates after the main data recording on the recording medium is started, the control unit determines the main data recording position. 8. The data recording apparatus according to claim 7, wherein the data recording apparatus returns to a position where the recording of the data is started to start the overwriting recording. 9. A recording medium having a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area in the main data recording area. In a data recording apparatus for recording data and management data, a detection unit for detecting a break of the main data and a control unit for updating a track number based on a detection signal from the detection unit are provided. After the main data recording on the recording medium is started, when the number of track updates reaches a predetermined number, a selective recording instruction is requested, and when there is a selective recording instruction within a predetermined time, the selection is made. The effective area of the main data recorded on the recording medium is determined based on the contents of the recording instruction, and the effective area of the main data is determined. A data recording device for recording area management data on the recording medium. 10. The method according to claim 1, wherein the control means returns the recording position of the main data to the position where the recording of the main data was started and starts overwriting recording when there is no selection recording instruction within the predetermined time. Item 10. The data recording device according to Item 9.