JP2002328848A - Recording/reproducing device, data access control method of recording/reproducing device and recording medium in which data access control method is recorded - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data access control method of a recording/reproducing device capable of easily creating backup data and preventing increase of data quantity and a recording medium in which the data access control method is recorded. SOLUTION: The recording/reproducing device consists of a system control part 10 which performs seek control to a magnetic head by controlling a host interface part 2 to transmit an instruction from a host device 1 to a system control part 10, a buffer memory 3 capable of storing a plurality of pieces of frame data of the contents, a CM discriminating part 4, a user selecting part 5 capable of storing, selecting and changing various setting values specified from the user, a data encode part 6 of the contents, a data decoding part 7, a read/write control part 9 to perform reproduction and recording, a positional information managing part 8, a data decoding part 7, a data encoding part 6, a CM discriminating part 4, the positional information managing part 8 and provides a reproduction instruction and a recording instruction to the read/write control part 9 and controls the entire recording/reproducing device 12 and a magnetic disk 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording / reproducing apparatus using a magnetic disk as a recording medium, a data access control method of the recording / reproducing apparatus, and a recording medium recording the data access control method.

[0002]

2. Description of the Related Art With the increase in the amount of information handled in modern computer systems for controlling and managing OA equipment and industrial equipment, storage devices for recording information have been required to have a large capacity. A recording / reproducing device using a magnetic disk as a recording medium is widely used as a large-capacity storage device for satisfying the requirement. Furthermore, with the recent increase in speed, capacity, and cost of recording / reproducing devices, recording / reproducing using a magnetic disk as a recording medium has become a device for recording / reproducing large-capacity continuous data such as moving image data. Devices are being used.

In a conventional recording / reproducing apparatus, after receiving an instruction from an externally connected higher-level device, access to a magnetic disk is started, and the higher-level device requests access according to a command issued from the higher-level device. Reading and writing data. Then, error correction such as ECC is performed on the data read from the magnetic disk, but if the error cannot be corrected, the data will be lost.

Therefore, in the conventional recording / reproducing apparatus, as a countermeasure against data loss on data on the magnetic disk due to an error or the like, a copy data for the data on the magnetic disk is issued by a command from a host device. Is created and recorded on a magnetic disk as backup data.

The operation of such a conventional recording / reproducing apparatus will be described below with reference to the drawings. FIG. 14 is a flowchart for explaining the operation of the conventional recording / reproducing apparatus. Here, the processing in the case where backup data is created for the original data on the magnetic disk in accordance with a command from a host device is shown.

[0006] In step S14-1, after the content is recorded by the recording / reproducing apparatus, in step S14-2, in response to a backup data creation instruction from the user, step S14-1 is executed.
At 14-3, a reproduction command is issued from the host device to the recording / reproducing device. In step S14-4, the recording / reproducing apparatus receives the issued reproduction command, and interprets the command. In step S14-5, the head is moved to a designated position on the magnetic disk according to the content of the interpreted reproduction command, and the data requested by the host device is read from the magnetic disk. In step 14-6, the read data is output to the host device. In step S14-7, the host device that has read the data issues a recording command for creating backup data to the recording / reproducing device. In step S14-8, the recording / reproducing device receives the issued recording command, and interprets the command.

Subsequently, in step S14-9, the host device
In step S14-5, writing to the recording / reproducing device is started using the data read from the recording / reproducing device as backup data. In step S14-10, the recording / reproducing apparatus receives the backup data transmitted from the higher-level device with the data length designated by the higher-level device, that is, the data read in step S14-5, according to the content of the recording command.

Next, in step S14-11, the recording / reproducing apparatus moves the head to a designated position on the magnetic disk according to the content of the interpreted recording command, and writes the backup data on the magnetic disk. And step S
If the transfer has been completed in 14-12, the process of creating backup data is completed, and if not completed, backup data is created on the magnetic disk by repeating steps S14-3 to S14-12. I do.

[0009]

However, in the above-described recording / reproducing apparatus, the data on the magnetic disk is accessed only by a command from a host device. The backup data must be created at the same time, which requires time and effort, and the backup data recorded on the magnetic disk is a copy of the original data. There is a problem that the amount of data to be stored increases.

Accordingly, the present invention has been made in view of the above problems, and has as its object to make it possible to create backup data without any trouble and to record the data on a magnetic disk. An object of the present invention is to provide a recording / reproducing apparatus capable of preventing an increase in data amount, a data access control method of the recording / reproducing apparatus, and a recording medium on which the data access control method is recorded.

[0011]

According to a first aspect of the present invention, there is provided a recording / reproducing apparatus which accesses a magnetic disk used as a recording medium and records the data on the magnetic disk. In the recording / reproducing apparatus for reading and writing various information, a mode of creating backup data for content recorded on the magnetic disk and being large-capacity continuous data such as moving image data is set in advance according to the importance of the content. Recording means for recording the content on the magnetic disk and recording the backup data on the magnetic disk using a backup data creation mode corresponding to the importance of the content; , Is characterized.

According to a second aspect of the present invention, there is provided a data access control method for a recording / reproducing apparatus, in which a magnetic disk used as a recording medium is accessed to read / write various information recorded on the magnetic disk. In the device data access control method, a mode of creating backup data for content that is large-capacity continuous data such as moving image data recorded on the magnetic disk is set in advance according to the importance of the content. Recording the content on the magnetic disk, and recording the backup data on the magnetic disk using a backup data creation mode corresponding to the importance of the content. And

According to a third aspect of the present invention, there is provided a recording medium on which a data access control method for a recording / reproducing apparatus is recorded, wherein various kinds of information recorded on the magnetic disk are accessed by accessing a magnetic disk used as the recording medium. In a recording medium in which a data access control method for a recording / reproducing apparatus for reading / writing data is recorded, a mode for creating backup data for content that is large-capacity continuous data, such as moving image data, recorded on the magnetic disk is set in advance. The content is set according to the importance of the content, the content is recorded on the magnetic disk, and the backup data is stored on the magnetic disk by using the backup data creation mode corresponding to the importance of the content. A recording step, comprising a recording step of recording. It was recorded device data access control program, characterized by.

According to a fourth aspect of the present invention, in the recording / reproducing apparatus for reading / writing various kinds of information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium, Recorded on the disc, for example, a keyword composed of a genre or a performer of the content that is a large-capacity continuous data such as moving image data, and a backup data creation mode of the content determined by the keyword; And recording means for recording the content on the magnetic disk and recording the backup data on the magnetic disk using the creation mode specified by the user. It is characterized by the following.

In the data access control method for a recording / reproducing apparatus according to the fifth aspect of the present invention, the recording / reproducing for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium. In the data access control method for a device, a keyword configured by a genre or a performer of a content that is large-capacity continuous data such as moving image data and the like recorded on the magnetic disk is determined by the keyword. The creation mode of the content backup data and the user's selection are specified in advance,
Recording the content on the magnetic disk, and recording the backup data on the magnetic disk using the creation mode specified by a user.

In a recording medium on which the data access control method for a recording / reproducing apparatus according to claim 6 of the present invention is recorded, various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium. A recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing data is recorded. The user specifies in advance a keyword to be created and a mode for creating the backup data of the content determined by the keyword by the user, and records the content on the magnetic disk. Mode, the backup data is transferred to the magnetic disk. And a recording step of recording on click, the recording and reproducing apparatus for data access control program recorded that the features a.

According to a seventh aspect of the present invention, in the recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium, When recording content that is large-capacity continuous data such as moving image data on a disc, the user is notified of the remaining recordable capacity on the magnetic disk, and the notified recordable capacity is A creation mode of the backup data of the recordable content is specified in advance by a user's selection, the content is recorded on the magnetic disk, and the backup data creation mode specified by the user is used. Recording means for recording the backup data on the magnetic disk And, characterized by.

According to the data access control method for a recording / reproducing apparatus of the present invention, a recording / reproducing apparatus reads and writes various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium. In the apparatus data access control method, when recording content that is large-capacity continuous data, such as moving image data, on the magnetic disk, the user is notified of the remaining recordable capacity on the magnetic disk. A mode for creating backup data of the content recordable in the notified recordable capacity is designated by a user in advance, and the content is recorded on the magnetic disk and the user designates the mode. Using the backup data creation mode, the backup data Further comprising a recording step of recording on the magnetic disk, characterized by.

In a recording medium recording the data access control method for a recording / reproducing apparatus according to the ninth aspect of the present invention, various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium. In a recording medium recording a data access control method for a recording / reproducing apparatus for reading / writing, on the magnetic disk,
For example, when recording content that is large-capacity continuous data such as moving image data, the user is notified of the remaining recordable capacity on the magnetic disk, and the recordable capacity is notified to the notified recordable capacity. A backup data creation mode of the content is designated by a user in advance, the content is recorded on the magnetic disk, and the backup data is created by using the backup data creation mode specified by the user. Recording the data access control program for a recording / reproducing apparatus, the recording step having a recording step of recording the data access control program on the magnetic disk.

According to a tenth aspect of the present invention, in the recording / reproducing apparatus for reading / writing various kinds of information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium, On the disk, for example, while recording content that is large-capacity continuous data such as moving image data, and while recording the backup data of the content on the magnetic disk using an arbitrary creation mode, Recording means for changing the backup data creation mode and recording the backup data on the magnetic disk in accordance with the changed creation mode, when the change of the backup data creation mode is designated. Features.

In the data access control method for a recording / reproducing apparatus according to the present invention, a recording / reproducing apparatus reads and writes various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium. In the data access control method for a device, while recording content that is large-capacity continuous data, such as moving image data, on the magnetic disk, the backup data of the content is stored in the magnetic disk using an arbitrary creation mode. While recording above,
When a change specification of the backup data creation mode is performed, a recording step of changing the backup data creation mode and recording the backup data on the magnetic disk according to the changed creation mode, It is characterized by.

In a recording medium on which the data access control method for a recording / reproducing apparatus according to the twelfth aspect of the present invention is recorded, various types of information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium are provided. In a recording medium on which a data access control method for a recording / reproducing device for reading / writing data is recorded, on the magnetic disk, content that is large-capacity continuous data such as moving image data is recorded, and backup data of the content is stored. In the middle of recording on the magnetic disk using an arbitrary creation mode, when a change specification of the backup data creation mode is performed, the backup data creation mode is changed,
Having a recording step of recording the backup data on the magnetic disk according to the changed creation mode,
The recording / reproducing device data access control program is recorded.

According to a thirteenth aspect of the present invention, in the recording / reproducing apparatus for reading / writing various kinds of information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium, The backup data creation mode for content that is recorded on a disc and is large-capacity continuous data such as moving image data, for example, whether to record only the video data of the content or to record only the audio data of the content Recording both the video data and the audio data of the content, and recording the content on the magnetic disk, and setting the creation mode of the selected backup data. To store the backup data on the magnetic disk. It has a recording means for, characterized by.

According to a data access control method for a recording / reproducing apparatus according to a fourteenth aspect of the present invention, a recording / reproducing apparatus reads and writes various information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium. In the apparatus data access control method, the mode of creating backup data for content that is recorded on the magnetic disk and that is large-capacity continuous data such as moving image data, for example, is to record only the video data of the content, Whether to record only the audio data of the content or to record both the video data and the audio data of the content, and select one of them, and record the content on the magnetic disk, Using the selected backup data creation mode It has a recording step of recording the backup data on the magnetic disk, characterized by.

In a recording medium on which the data access control method for a recording / reproducing apparatus according to claim 15 of the present invention is recorded, various types of information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium are provided. In a recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing data is recorded, the mode for creating backup data for content which is recorded on the magnetic disk and is large-capacity continuous data such as moving image data, A choice is made between recording only the video data of the content, recording only the audio data of the content, and recording both of the video data and the audio data of the content. The content is recorded to the With creation mode click updater, the backup data has a recording step of recording on the magnetic disk, the recording and reproducing apparatus for data access control program recorded that the features a.

In the recording / reproducing apparatus according to the present invention, in the recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium, On the disk, for example, while recording content that is large-capacity continuous data such as moving image data, and while recording backup data of the content on the magnetic disk, for example, CM Recording means for temporarily stopping recording of the backup data on the magnetic disk for the unnecessary part, and restarting recording of the backup data on the magnetic disk after the end of the unnecessary part;
It is characterized by.

In the data access control method for a recording / reproducing apparatus according to the present invention, a recording / reproducing method for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium. In the device data access control method, while recording content that is large-capacity continuous data, such as moving image data, on the magnetic disk, while recording the backup data of the content on the magnetic disk, For an unnecessary part such as a CM in the content, the recording of the backup data on the magnetic disk is temporarily stopped, and after the unnecessary part is completed, the backup data is not recorded on the magnetic disk. A recording step of restarting the recording.

According to a recording medium on which the data access control method for a recording / reproducing apparatus according to claim 18 of the present invention is recorded, various types of information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium are provided. In a recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing data is recorded, on the magnetic disk, content that is large-capacity continuous data such as, for example, moving image data is recorded, and the backup data of the content is stored in the magnetic disk. During the recording on the magnetic disk, the recording of the backup data on the magnetic disk is temporarily stopped for an unnecessary portion such as a CM in the content, and after the unnecessary portion, Recording for restarting recording of the backup data on the magnetic disk Having step, the recording and reproducing apparatus for data access control method that was recorded, characterized by.

[0029] In the recording / reproducing apparatus according to the nineteenth aspect of the present invention, a buffer memory capable of storing a plurality of pieces of frame data of large-capacity continuous data such as moving image data to be reproduced or recorded on a magnetic disk. An unnecessary part discriminating unit that discriminates an unnecessary part such as a CM part from the frame data of the content received from the host device, and stores various setting values in the operation of the recording / reproducing apparatus designated by the user. A user selection unit capable of selectively changing them; and, when recording the content on the magnetic disk, a plurality of different data rates from frame data of the content received from a higher-level device as recording data to the magnetic disk and backup data. A data encoding unit for encoding the data on the magnetic disk; A data decoding unit that decodes recording data and backup data recorded at a plurality of different data rates read from the magnetic disk when reproducing the recorded content into frame data for output to the host device; A read / write control unit for performing reproduction and recording, a position information management unit for managing physical position information for the content on the magnetic disk, and the data decoding unit in an operation mode designated by the user selection unit. And the data encoding unit and the unnecessary part discriminating unit, controlling the position information management unit to perform seek control on the magnetic head, and reproducing and recording the content recording data and backup data on the magnetic disk. Command to the read / write control unit. And a system controller that can control the entire recording and reproducing apparatus, characterized by comprising a.

[0030]

Embodiments of the present invention will be described below with reference to the drawings. The embodiment described here is merely an example, and the present invention is not necessarily limited to this embodiment.

(Embodiment 1) First, claim 1 of the present invention
A recording and reproducing apparatus according to the first embodiment will be described as a first embodiment with reference to the drawings. FIG. 1 is a block diagram showing a configuration of the recording / reproducing apparatus according to the first embodiment. In FIG. 1, reference numeral 1 denotes a higher-level device that issues a command (data access request) to the recording / reproducing device 12 to perform data transfer with the recording / reproducing device 12, and 12 denotes a recording / reproducing device.

The recording / reproducing device 12 controls an interface with the higher-level device 1, transmits a command from the higher-level device 1 to the system controller 10, and a content reproduced or recorded on the magnetic disk 11. A buffer memory 3 capable of storing a plurality of (large-capacity continuous data such as moving image data) frame data;
A CM discriminating unit 4 for discriminating a CM portion from the frame data of the content received from the user; a user selecting unit 5 for storing various set values in the operation of the recording / reproducing apparatus 12 designated by the user and allowing the user to select and change them; In recording the content on the magnetic disk 11, the host device 1
A data encoding unit 6 that encodes the frame data of the content received from the PC as a plurality of different data rates as recording data on the magnetic disk 11 and backup data, and is read from the magnetic disk 11 when reproducing the content on the magnetic disk 11 A data decoding unit 7 for decoding record data and backup data recorded at a plurality of different data rates into frame data for output to the host device 1, and a read / write control unit 9 for reproducing and recording content.
A position information management unit 8 for managing physical position information on contents on the magnetic disk 11, a data decoding unit 7, a data encoding unit 6, and a CM discrimination according to a backup data creation mode designated by the user selection unit 5. The controller 4 controls the position information management unit 8 to perform seek control on the magnetic head, and gives a read / write command to the read / write control unit 9 with respect to the recorded data of the content on the magnetic disk 11 to record / reproduce. The system includes a system controller 10 capable of controlling the entire device 12 and a magnetic disk 11.

FIG. 2 is a diagram showing a specific example of the recording mode of content and the backup data creation mode for each content importance according to the first embodiment. In this example, the encoding method in the data encoding unit 6 and the decoding method in the data decoding unit 7 are MPEG-2.
And the data rate for recording content is 6M.
bps, and the order of importance of the contents is as follows: A is the first place, B is the second place, and C is the third place.
One has been set.

The first creation mode is a creation mode of backup data corresponding to the importance A of the content. The data rate is 6 Mbps, the backup image quality is equal to the content recording data, and the backup data capacity is:
It is equal to the capacity of the content recording data.

Next, a second creation mode 2 is a mode for creating backup data corresponding to the importance B of the content. The data rate is 4 Mbps, the backup image quality is lower than that of the creation mode 1, and the capacity of the backup data is content. Of the recording data and the backup data in the creation mode 1 are about 2/3 times larger.

Next, a third creation mode 3 is a creation mode of backup data corresponding to the importance C of the content. The data rate is 2 Mbps, the backup image quality is lower than that of the creation mode 2, and the capacity of the backup data is created. This is about 1/3 of the backup data capacity of mode 1.

FIG. 3 is a diagram for explaining the operation of the recording / reproducing apparatus 12 according to the first embodiment.
2 shows a process for recording content on the magnetic disk 11 and a process for reproducing the content from the magnetic disk 11 afterwards and a process performed by the recording / reproducing apparatus 12 when an error occurs during the reproduction.

In step S3-1, the recording / reproducing apparatus 1
In the second example, the setting of the backup data creation mode when recording the content is performed by the recording / reproducing apparatus 1 when the power is turned on.
2 is performed. In this case, the settings are as shown in FIG. Next, in step S3-2, the user sets the importance of the content to be recorded in the user selection unit 5 before recording the content. For example, if the user sets the importance level to B, this setting is transmitted from the user selection unit 5 to the system control unit 10, and the system control unit 10 sends the data encoding unit 6 and the data decoding unit 7 Rate corresponding to importance B, in this case 4M
Set bps.

Next, in step S3-3, the host device 1
, A content recording command is issued to the recording / reproducing device 12, and is received by the host interface unit 2 in step S3-4. Host interface unit 2
Informs the system control unit 10 that the recording command from the host device 1 has been received. Thereby, step S3-5
In step S3-6, the system control unit 10 analyzes the recording command received by the host interface unit 2 and recognizes that the command is a recording command to the magnetic disk 11. In step S3-6, the system control unit 10 After the control, the system controller 10 temporarily stores the data of the content sent from the host device 1 in the buffer memory 3 and then controls the data encoder 6 to store the content in the buffer memory 3 in step S3-7. 3 and is encoded on recording data having a data rate of 6 Mbps to be recorded on the magnetic disk 11. In step S3-8, the system control unit 10 controls the position information management unit 8 to calculate the physical position on the magnetic disk 11 where the encoded recording data is to be recorded, seeks the magnetic head to that position, and reads the data. The magnetic disk 11 through the write controller 9
Write the recording data to the top.

Subsequently, in step S3-9, the system control unit 10 controls the data encoding unit 6 to read the same content as the content encoded in step S3-7 from the buffer memory 3 and record it on the magnetic disk 11. Encode to backup data. In this case, since the importance of the content is set to B, the content is encoded into backup data of 4 Mbps.

In step S3-10, the system controller 10 controls the position information manager 8 to calculate the physical position on the magnetic disk 11 where the encoded backup data is to be recorded, and seeks the magnetic head to that position. Then, the backup data is written on the magnetic disk 11 through the read / write control unit 9. Step S3
In -11, if all the contents from the higher-level device 1 are not recorded, the process returns to step S3-3, and the recording of the recording data and the backup data is repeated.

As described above, the backup data creation mode for the content recorded on the magnetic disk 11 is set for each importance of the content, and the importance of the content is set at the time of recording.
1, and the backup data can be recorded on the magnetic disk 11 by using a backup data creation mode corresponding to the importance of the content.

Further, in step S3-12, if there is a request to reproduce the recorded content, a command to reproduce the content is issued from the host device 1, and step S3-13.
Performs the content reproduction process.

First, a reproduction command is sent to the host interface unit 2.
Received at. The host interface unit 2 informs the system control unit 10 that the reproduction command from the host device 1 has been received.
Then, the system control unit 10 analyzes the reproduction command received by the host interface unit 2, recognizes that the reproduction is from the magnetic disk 11, controls the position information management unit 8, and Calculates the physical position on the magnetic disk 11 for reproducing the content requested by
The magnetic head is sought to that position, the recorded data is reproduced from the magnetic disk 11 through the read / write control unit 9, the recorded data is decoded into frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. Then, the system control unit 10 reads out the frame data of the content temporarily stored from the buffer memory 3 and transfers it to the host device 1 through the host interface unit 2.

In step S3-14, if the above-described reproduction processing has been normally performed without error, the process proceeds to step S3-16, in which all the contents requested by the higher-level device 1 have been reproduced. End the process,
If not, the process returns to step S3-12 to perform the remaining reproduction.

If an error occurs in the reproduction process of step S3-13 and the recorded data of the content cannot be corrected by error correction such as ECC or the like and is lost, the process proceeds from step S3-14 to step S3-15, where the data is lost. In order to reproduce the backup data corresponding to the recorded data of the content from the magnetic disk 11, the position information management unit 8 is controlled to calculate the physical position on the magnetic disk 11 for reproducing the backup data, Is read to that position, the backup data is reproduced from the magnetic disk 11 through the read / write control unit 9, the backup data is decoded into frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. Then, the system control unit 10 reads the backup frame data of the content temporarily stored from the buffer memory 3 and transfers the frame data to the host device 1 through the host interface unit 2. As a result, even if the user does not create backup data for the content after recording the content, an error occurs in the recorded data of the read content in reproducing the content recorded on the magnetic disk 11. In the event of occurrence and loss of the content, the backup data corresponding to the lost content on the magnetic disk 11 is read and reproduced, thereby making it possible to create backup data for the content without losing the content and the time required for the creation. And the amount of data for backup can be controlled according to the importance of the content.

Although the recording / reproducing apparatus has been described here, a data access control method of the recording / reproducing apparatus which can obtain the same effect even in a configuration other than such a configuration, and a recording medium on which the data access control method is recorded may be used. Conceivable.

(Embodiment 2) Hereinafter, a recording / reproducing apparatus according to a fourth aspect of the present invention will be described with reference to the drawings. The configuration of the recording / reproducing apparatus according to Embodiment 2 is as follows.
The configuration is the same as that of the first embodiment, and FIG. 1 is a block diagram thereof.

FIGS. 4 and 5 are diagrams showing a specific example of a content keyword and a backup data creation mode corresponding to the keyword in the second embodiment of the present invention. In this example, the encoding method in the data encoding unit 6 and the decoding method in the data decoding unit 7 are the same as those in the first embodiment of the present invention.
In EG-2, the data rate in recording the content is 6 Mbps.

In FIG. 4, there are three initial keywords, such as movie, sports, etc., according to the genre of the content recorded by the recording / reproducing apparatus 12, and the backup data creation mode corresponding to the keyword is classified by data rate. 6Mbps,
There are three initial settings of 4 Mbps and 2 Mbps. Furthermore, a keyword and a backup data creation mode corresponding to the keyword can be added, changed, and designated by the user's preference from the user selection unit 5. In the example of FIG. 5, movies, baseball, Soccer, golf, other sports, music, and other seven are additionally changed, and a backup data creation mode corresponding to those keywords is also set. Furthermore, keywords include the names of performers (star names), program names, song names, place names,
The user's preference such as a program time slot (for example, 9:00 on Friday) or “favorite” can be used as a keyword, and can be set by the user.

FIG. 6 is a diagram for explaining the operation of the second embodiment of the present invention. In the recording / reproducing apparatus 12 shown in FIG. A process of designating a backup data creation mode to record content on the magnetic disk 11 and thereafter reproducing the content from the magnetic disk 11 and performed by the recording / reproducing device 12 when an error occurs during reproduction. The processing is shown.

When the user turns on the recording / reproducing apparatus 12 for the first time, the user selecting section 5 is in an initial state, and various setting values in the operation of the recording / reproducing apparatus 12 are stored in the user selecting section 5. It has not been. Therefore, in step S6-1, the system control unit 10 reads various set values in the operation of the recording / reproducing device 12 specified by the user stored in the user selection unit 5, and sets the content keyword and the backup data creation mode. If the initial setting has not been stored, it is determined that the user has used the first time. If the initial setting of the content keyword and the backup data creation mode has been stored, it is determined that the user has used the second time or later. to decide.

If the user has used the content for the first time, the process proceeds to step S6-2, where the content keyword and the backup data creation mode for recording the content of the recording / reproducing apparatus 12 are initialized. FIG. 4 shows a specific example of this case. Subsequently, in step S6-3, this initial setting is notified to the user through the user selection unit 5, and the user is confirmed. If the user wants to change the content keyword or the initial setting of the backup data creation mode, it can be changed through the user selection unit 5. Then, the setting result is stored in the user selection unit 5. FIG. 5 shows a specific example of the change result.

In step S6-1, if it is determined that the current use is the second or later use, step S6
Then, the process proceeds to -4, where the keyword of the previously used content and the initial setting value of the backup data creation mode, that is, the settings currently stored in the user selection unit 5 are used as they are. Hereinafter, description will be given using the content keyword and the setting of the backup data creation mode shown in FIG.

Next, in step S6-5, before recording the content, the user sets the keyword of the content to be recorded in the user selection section 5 before recording. Subsequently, in step S6-6, the keyword set in step S6-5 is notified to the user through the user selection unit 5,
At the same time, the corresponding backup data creation mode is also notified. If the user wants to check and change these settings, the user can change the settings in the user selection unit 5 in step S6-7. Assuming that the user has set soccer as a keyword in step S6-5 based on the setting in FIG. 5, the data rate 4M is set as the backup data creation mode corresponding to this keyword.
bps is set from the user selection unit 5 to the system control unit 1
Informed to 0. Thereby, the system control unit 10
The data rate of the data encoding unit 6 and the data decoding unit 7 can be set to 4 Mbps during backup. Next, in step S6-8, the content recording instruction from the host device 1 is transmitted to the recording / reproducing device 1.
2 and received by the host interface unit 2 in step S6-9. The host interface unit 2 notifies the system control unit 10 that a recording command from the host device 1 has been received. Thereby step S
In 6-10, the system control unit 10 analyzes the recording command received by the host interface unit 2 and
Step S6-11 recognizes that it is a recording command to
Then, the system control unit 10 controls the recording / reproducing device 12 to temporarily store the data of the content sent from the higher-level device 1 in the buffer memory 3 and then returns to step S6.
At -12, the system control unit 10 makes the data encoding unit 6
To read the content from the buffer memory 3 and record it on the magnetic disk 11 at a data rate of 6 Mb.
Encode to ps recording data. And step S
In step 6-13, the system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded recording data is to be recorded, seeks the magnetic head to that position, and The recording data is written on the magnetic disk 11 through the write control unit 9. Subsequently, in step S6-14, the system controller 10
Controls the data encoding unit 6 to execute step S6-1.
2 is read from the buffer memory 3 and encoded into backup data to be recorded on the magnetic disk 11. In this case, since the keyword of the content is set to soccer, the content is encoded into 4 Mbps backup data. In step S6-15, the system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded backup data is recorded, and causes the magnetic head to seek to that position. Magnetic disk 11 through read / write controller 9
Write backup data to the top. Step S6-1
In 6, if all the contents from the higher-level device 1 have not been recorded, the process returns to step S <b> 6-8, and the recording of the recording data and the backup data is repeated.

As described above, the keyword of the content recorded on the magnetic disk 11 and the creation mode of the backup data of the content corresponding to the keyword are designated by the user, and
The contents can be recorded on the magnetic disk 11 and the backup data can be recorded on the magnetic disk 11 by using the backup data creation mode corresponding to the keyword specified by the user.

In step S6-17, if there is a request to reproduce the recorded content, a command to reproduce the content is issued from the host device 1, and step S6-18.
Performs the content reproduction process. First, a reproduction command is received by the host interface unit 2. The host interface unit 2 informs the system control unit 10 that the playback command has been received from the host device 1, whereby the system control unit 10 analyzes the playback command received by the host interface unit 2, Is recognized, and the position information management unit 8 is controlled to
Calculates the physical position on the magnetic disk 11 for reproducing the content requested by the user, causes the magnetic head to seek to that position, and reads the magnetic disk 1 through the read / write control unit 9.
1 and reproduces the recorded data into frame data by a data decoding unit,
To store temporarily. The system control unit 10 reads out the frame data of the content temporarily stored from the buffer memory 3 and
To the host device 1 through In step S6-19, if the processing has been normally performed without error in the above-described reproduction processing, the process proceeds to step S6-21, and if all the contents requested by the higher-level device 1 have been reproduced, the processing is performed. If the reproduction has not been completed and the reproduction has not been completed, the flow returns to step S6-17, and the remaining reproduction is performed. Step S6-
In the case where an error has occurred in the reproduction process of No. 18 and the recorded data of the content cannot be corrected by error correction such as ECC or the like, and has been lost, the process proceeds from step S6-19 to step S6.
In step -20, in order to reproduce from the magnetic disk 11 the backup data corresponding to the recorded data of the lost content, the position information management unit 8 is controlled to control the physical position on the magnetic disk 11 where the backup data is reproduced. , Seek the magnetic head to that position,
The backup data is reproduced from the magnetic disk 11 through the write control unit 9, the backup data is decoded into frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. And the system control unit 10
The backup frame data of the content temporarily stored is read out from the buffer memory 3 and transferred to the host device 1 through the host interface unit 2.

As a result, even if the user does not create backup data for the content after recording the content, the reproduction of the content recorded on the magnetic disk 11 in the reproduction of the content recorded on the magnetic disk 11 is performed. If an error occurs and the content is lost, the backup data corresponding to the lost content on the magnetic disk 11 is read out and played back, so that it is troublesome to create backup data for the content without losing the content. And the creation time can be reduced, and the amount of data for backup can be controlled in accordance with the content keyword specified by the user.

Although the recording / reproducing apparatus has been described here, a data access control method of the recording / reproducing apparatus which can obtain the same effect even in a configuration other than such a configuration, and a recording medium on which the data access control method is recorded may be used. Conceivable.

(Embodiment 3) Hereinafter, a recording / reproducing apparatus according to a seventh aspect of the present invention will be described with reference to the drawings. The configuration of the recording / reproducing apparatus of the third embodiment is the same as that of the above-described first embodiment, and FIG. 1 is a block diagram thereof.

FIG. 2 is used as a specific example of the content recording and the backup data creation mode for each content importance according to the third embodiment of the present invention. And the same as the example of the backup data creation mode for each content importance. Also in this example, the encoding method in the data encoding unit 6 and the decoding method in the data decoding unit 7 are MPEG-2, and the data rate in recording the content is 6 Mbps.

FIG. 7 is a diagram for explaining the operation of the third embodiment of the present invention. In the recording / reproducing apparatus 12 shown in FIG. By notifying the user of the capacity, the user is allowed to confirm and select a mode for creating backup data of the content, to process the recording of the content, and thereafter to reproduce the content from the magnetic disk 11 and to execute the process when an error occurs during the reproduction. , Recording and reproducing device 1
2 shows the processing performed in FIG.

In step S7-1, the recording / reproducing device 1
In the second example, the setting of the backup data creation mode when recording the content is performed by the recording / reproducing apparatus 1 when the power is turned on.
2 is performed. In this case, the settings are as shown in FIG. Next, in step S7-2, before recording the content, the user sets the importance of the content to be recorded in the user selection unit 5 before recording the content. For example, if the user sets the importance level to B, this setting is transmitted from the user selection unit 5 to the system control unit 10, and the system control unit 10 sends the data encoding unit 6 and the data decoding unit 7 Rate corresponding to importance B, in this case 4M
Set bps. Subsequently, in step S7-3, the system control unit 10 calculates the remaining storage capacity of the magnetic disk 11, which is the recording medium of the recording / reproducing device 12, and notifies the user through the user selection unit 5. At this time, the system control unit 1
0 also notifies the user of the storage capacity required when recording backup data at a data rate corresponding to the backup data creation mode specified by the user in step S7-2. Further, when the user uses the backup data creation mode specified in step S7-2, the setting is such that the storage capacity required for the magnetic disk 11 is reduced, that is, the data amount of the backup data is reduced. The setting is also notified to the user as the recommended creation mode. In this case, the data rate is 2 Mb
The mode for creating backup data in ps is also notified to the user as the recommended mode. In step S7-4, the user checks and changes the creation mode of the backup data to be adopted for the content to be recorded from the values notified from the recording / reproducing device 12 in step S7-3. That is, the user sets the backup data creation mode in which the data rate specified in step S7-2 is 4 Mbps and the data rate recommended in step S7-3 is 2M.
From the bps backup data creation mode, either one is selected and set through the user selection unit 5. If the user selects 2 Mbps here, this change is transmitted from the user selection unit 5 to the system control unit 10,
The system control unit 10 changes and sets the data rate at the time of backup to 2 Mbps for the data encoding unit 6 and the data decoding unit 7.

Next, in step S7-5, a content recording command is issued from the higher-level device 1 to the recording / reproducing device 12, and is received by the host interface unit 2 in step S7-6. Host interface unit 2
Informs the system control unit 10 that the recording command from the host device 1 has been received. Thereby, step S7-7
In step S7-8, the system control unit 10 analyzes the recording command received by the host interface unit 2, recognizes that the command is a recording command for the magnetic disk 11, and in step S7-8, the system control unit 10 After the control, the system controller 10 temporarily stores the data of the content sent from the host device 1 in the buffer memory 3, and in step S 7-9, the system controller 10 controls the data encoder 6 to store the content in the buffer memory 3. 3 and is encoded on recording data having a data rate of 6 Mbps to be recorded on the magnetic disk 11. In step S7-10, the system control unit 10 controls the position information management unit 8 to calculate the physical position on the magnetic disk 11 where the encoded recording data is to be recorded, seeks the magnetic head to that position, and reads the data. The magnetic disk 1 through the write control unit 9
1. Write the recording data onto Subsequently, in step S7-11, the system control unit 10 controls the data encoding unit 6 to read the same content as the content encoded in step S7-9 from the buffer memory 3 and to store the backup data to be recorded on the magnetic disk 11. Encode to In this case, the importance of the content is set to B, but since the data rate has been changed in step S7-7, the content is encoded into 2 Mbps backup data. In step S7-12, the system control unit 10 controls the position information management unit 8 to calculate the physical position on the magnetic disk 11 where the encoded backup data is to be recorded, and causes the magnetic head to seek to that position. Then, the backup data is written on the magnetic disk 11 through the read / write control unit 9. In step S7-13, if all the content from the higher-level device 1 has not been recorded, the process returns to step S7-5, and the recording of the recording data and the backup data is repeated.

As described above, when recording the content on the magnetic disk 11, the user is notified of the remaining capacity of the magnetic disk 11 and each set value, and the content corresponding to the remaining capacity of the magnetic disk 11 is backed up. The data creation mode is specified by the user through the user selection unit 5 to record the content on the magnetic disk 11, and the backup data is transferred to the magnetic disk using the backup data creation mode specified by the user. 11 can be recorded.

In step S7-14, if there is a request to reproduce the recorded content, a higher-level device 1 issues a content reproduction command, and step S7-15.
Performs the content reproduction process. First, a reproduction command is received by the host interface unit 2. The host interface unit 2 informs the system control unit 10 that the playback command has been received from the host device 1, whereby the system control unit 10 analyzes the playback command received by the host interface unit 2, Is recognized, and the position information management unit 8 is controlled to
Calculates the physical position on the magnetic disk 11 for reproducing the content requested by the user, causes the magnetic head to seek to that position, and reads the magnetic disk 1 through the read / write control unit 9.
1 and reproduces the recorded data into frame data by a data decoding unit,
To store temporarily. The system control unit 10 reads out the frame data of the content temporarily stored from the buffer memory 3 and
To the host device 1 through In step S7-16, if the processing has been performed normally without error in the above-described reproduction processing, the process proceeds to step S7-18. If the reproduction has not been completed and the reproduction has not been completed, the flow returns to step S7-14 to perform the remaining reproduction. Step S7-
In the case where an error has occurred in the reproduction processing of No. 15 and the recorded data of the content cannot be corrected by error correction such as ECC or the like and has been lost, steps S7-16 to S7
In step -17, in order to reproduce from the magnetic disk 11 the backup data corresponding to the recorded data of the lost content, the position information management unit 8 is controlled to control the physical position on the magnetic disk 11 from which the backup data is reproduced. , Seek the magnetic head to that position,
The backup data is reproduced from the magnetic disk 11 through the write control unit 9, the backup data is decoded into frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. And the system control unit 10
The backup frame data of the content temporarily stored is read out from the buffer memory 3 and transferred to the host device 1 through the host interface unit 2.

As a result, even after the content is recorded, even if the user does not create backup data for the content, the recorded data of the read content is not reproduced when the content recorded on the magnetic disk 11 is reproduced. If an error occurs and the content is lost, the backup data corresponding to the lost content on the magnetic disk 11 is read out and played back, so that it is troublesome to create backup data for the content without losing the content. Thus, the amount of data for backup can be controlled in accordance with the remaining capacity of the magnetic disk 11.

FIG. 7 shows a case where the content is recorded on the magnetic disk 11 by designating the importance of the content. However, the recording of the content is performed not by designating the importance but by specifying a keyword. Needless to say, this is acceptable. Although the recording / reproducing apparatus has been described here,
A data access control method of a recording / reproducing apparatus that can obtain the same effect other than such a configuration, and a recording medium on which the data access control method is recorded may be considered.

(Embodiment 4) A recording / reproducing apparatus according to a tenth aspect of the present invention will be described below with reference to the drawings. The configuration of the recording / reproducing apparatus of the fourth embodiment is the same as that of the above-described first embodiment, and FIG. 1 is a block diagram thereof.

FIG. 2 is used as a specific example of the content recording and the backup data creation mode for each content importance according to the fourth embodiment of the present invention, and the content recording according to the first embodiment of the present invention is performed. And the same as the example of the backup data creation mode for each content importance. Also in this example, the encoding method in the data encoding unit 6 and the decoding method in the data decoding unit 7 are MPEG-2, and the data rate in recording the content is 6 Mbps.

FIG. 8 is a diagram for explaining the operation of the fourth embodiment of the present invention. In the recording / reproducing apparatus 12 shown in FIG. 1, content is recorded on the magnetic disk 11 and backup data of the content is created. Processing when the creation mode of the backup data is changed during the recording on the magnetic disk 11 using the mode, and then, the content is transferred to the magnetic disk 11.
, The process performed by the recording / reproducing apparatus 12 when an error occurs during the reproduction.

In step S8-1, the recording / reproducing device 1
In the second example, the setting of the backup data creation mode when recording the content is performed by the recording / reproducing apparatus 1 when the power is turned on.
2 is performed. In this case, the settings are as shown in FIG. Next, in step S <b> 8-2, before recording the content, the user sets the importance of the content to be recorded in the user selection unit 5 before recording. For example, if the user sets the importance level to B, this setting is transmitted from the user selection unit 5 to the system control unit 10, and the system control unit 10 sends the data encoding unit 6 and the data decoding unit 7 Rate corresponding to importance B, in this case 4M
Set bps. Next, in step S8-3, the content recording command is issued from the higher-level device 1 to the recording / reproducing device 12.
And received by the host interface unit 2 in step S8-4. The host interface unit 2 notifies the system control unit 10 that a recording command from the host device 1 has been received. Thereby, step S8
In -5, the system control unit 10 analyzes the recording command received by the host interface unit 2 and recognizes that the command is a recording command to the magnetic disk 11, and in step S8-6, the system control unit 10 12 to temporarily store the data of the content sent from the host device 1 in the buffer memory 3, and then in step S 8-7, the system control unit 10 controls the data encoding unit 6 to encode the content. The data is read from the buffer memory 3 and encoded on the magnetic disk 11 to be recorded data having a data rate of 6 Mbps. In step S8-8, the system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded recording data is to be recorded, and seeks the magnetic head to that position. Then, the recording data is written on the magnetic disk 11 through the read / write control unit 9.

Next, in step S8-9, the system control unit 10 checks with the user selection unit 5 whether the user has set the backup data creation mode change. If a change has been made, in step S8-10, according to the change, step S8-
The data rate of the backup data specified in step 2 is changed, and the data rate at the time of backup is changed for the data encoding unit 6 and the data decoding unit 7. If not changed, the data rate of the backup data corresponding to the importance B of the content is set to 4 Mbps.

Subsequently, in step S8-11, the system control unit 10 controls the data encoding unit 6 to read from the buffer memory 3 the same content as the content encoded in step S8-7, and
1 to encode the backup data to be recorded.
Then, in step S8-12, the system control unit 10
Calculates the physical position on the magnetic disk 11 where the encoded backup data is recorded by controlling the position information management unit 8, causes the magnetic head to seek to that position, and reads the data on the magnetic disk 11 through the read / write controller 9. Write backup data to

In step S8-13, if all the contents from the higher-level device 1 have not been recorded, step S8
Returning to -3, the recording of the recording data and the backup data is repeated, and the recording of the content ends if all the recording has been completed.

In the recording of contents repeated as described above, for example, when a certain music program is recorded as importance C, backup data is created at a backup data rate of 2 Mbps corresponding to the importance C. In the middle of this recording, if the user's favorite singer appears and the user specifies to change the degree of importance to A, the user selection unit 5 performs the above-described step S.
This change is detected in step 8-9, and step S8-1 is executed.
With 0, the mode for creating backup data can be changed to 6 Mbps, which is the data rate corresponding to the importance A. When the turn of the user's favorite singer is completed and the user designates the importance to be returned to C, the change is detected in the aforementioned step S8-9 in the above-mentioned step S8-9. Then, in step S8-10, the backup data creation mode can be changed to 2 Mbps, which is the data rate corresponding to importance C.

As described above, when recording the content on the magnetic disk 11, the content is recorded on the magnetic disk 11 and the backup data of the content is stored in the magnetic disk 11 using a certain creation mode.
Even if the change of the backup data creation mode is specified during the above recording, the backup data creation mode is changed and the backup is performed using the backup data creation mode specified by the user. Data can be recorded on the magnetic disk 11.

In step S8-14, if there is a request to reproduce the recorded content, a command to reproduce the content is issued from the higher-level device 1, and a step S8-15 is performed.
Performs the content reproduction process. First, a reproduction command is received by the host interface unit 2. The host interface unit 2 informs the system control unit 10 that the playback command has been received from the host device 1, whereby the system control unit 10 analyzes the playback command received by the host interface unit 2, Is recognized, and the position information management unit 8 is controlled to
Calculates the physical position on the magnetic disk 11 for reproducing the content requested by the user, causes the magnetic head to seek to that position, and reads the magnetic disk 1 through the read / write control unit 9.
1 and reproduces the recorded data into frame data by a data decoding unit,
To store temporarily. The system control unit 10 reads out the frame data of the content temporarily stored from the buffer memory 3 and
To the host device 1 through In step S8-16, if the processing has been performed normally without error in the above-described reproduction processing, the process proceeds to step S8-18, and if all the contents requested by the higher-level device 1 have been reproduced, the processing is performed. If the reproduction has not been completed and the reproduction has not been completed, the flow returns to step S8-14, and the remaining reproduction is performed. Step S8-
In the case where an error has occurred in the reproduction processing of No. 15 and the recorded data of the content cannot be corrected by error correction such as ECC or the like and has been lost, steps S8-16 to S8
In step -17, in order to reproduce from the magnetic disk 11 the backup data corresponding to the recorded data of the lost content, the position information management unit 8 is controlled to control the physical position on the magnetic disk 11 from which the backup data is reproduced. , Seek the magnetic head to that position,
The backup data is reproduced from the magnetic disk 11 through the write control unit 9, the backup data is decoded into frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. And the system control unit 10
The backup frame data of the content temporarily stored is read out from the buffer memory 3 and transferred to the host device 1 through the host interface unit 2.

As a result, even after the content is recorded, even if the user does not create backup data for the content, the recorded data of the read content is not reproduced in the reproduction of the content recorded on the magnetic disk 11. In the case where an error occurs and the content is lost, the backup data corresponding to the lost content on the magnetic disk 11 is read out and played back, so that it is troublesome to create the backup data for the content without losing the content. Even if a change is made to the backup data creation mode while recording the content, the backup is performed according to the changed backup data creation mode. Can be controlled.

FIG. 8 shows a case in which the content is recorded on the magnetic disk 11 by specifying the importance of the content. However, the recording of the content is not performed by specifying the importance but by specifying a keyword. Needless to say, it is acceptable. Although the recording / reproducing apparatus has been described here,
A data access control method of a recording / reproducing apparatus that can obtain the same effect other than such a configuration, and a recording medium on which the data access control method is recorded may be considered.

(Embodiment 5) Hereinafter, a recording / reproducing apparatus according to a thirteenth aspect of the present invention will be described with reference to the drawings. The configuration of the recording / reproducing apparatus of the fifth embodiment is the same as that of the above-described first embodiment, and FIG. 1 is a block diagram thereof.

FIG. 9 shows a specific example of the content backup data creation mode according to the fifth embodiment of the present invention.
Shown in There are three content backup data creation modes: a mode for creating backup data only for video data, a mode for creating backup data only for audio data, and a mode for creating backup data for both video data and audio data.

FIG. 10 is a diagram for explaining the operation of the fifth embodiment of the present invention. In the recording / reproducing apparatus 12 shown in FIG. Select the data creation mode from the mode of creating backup data of video data only, the mode of creating backup data of audio data only, and the mode of creating backup data of both video data and audio data. 2 shows a process for recording backup data on the disk 11 and a process performed by the recording / reproducing device 12 when the content is reproduced from the magnetic disk 11 and an error occurs during reproduction. In this example, a case will be described in which a mode for creating backup data only for video data is selected.

In step S10-1, the recording / reproducing apparatus 12 sets the backup data creation mode when recording the content in the initialization of the recording / reproducing apparatus 12 when the power is turned on. In this case, in the creation mode 3 (initial setting) shown in FIG. 9, the backup data of both video data and audio data is created. Next, in step S10-2, before recording the content, the user sets the backup data creation mode of the content to be recorded in the user selection unit 5 before recording the content. Here, for example, if the user sets a mode for creating backup data only for video data in creation mode 1, this setting is transmitted from the user selection unit 5 to the system control unit 10, and the system control unit 10
Sets the data encoding unit 6 and the data decoding unit 7 to a mode for creating backup data using only video data at the time of backup. Next, in step S10-3, a content recording command is issued from the higher-level device 1 to the recording / reproducing device 12, and the process proceeds to step S10-3.
At 10-4, it is received by the host interface unit 2. The host interface unit 2 notifies the system control unit 10 that a recording command from the host device 1 has been received.
Thereby, in step S10-5, the system control unit 10
Analyzes the recording command received by the host interface unit 2, recognizes that the command is a recording command to the magnetic disk 11, and in step S10-6, the system control unit 10 controls the recording / reproducing device 12 to After temporarily storing the data of the content sent from the device 1 in the buffer memory 3, in step S10-7, the system control unit 10
By controlling the data encoding unit 6, the content is read from the buffer memory 3 and encoded into recording data to be recorded on the magnetic disk 11. And step S10-
In 8, the system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded recording data is recorded, seeks the magnetic head to that position, and performs read / write control. The recording data is written on the magnetic disk 11 through the unit 9. Subsequently, in step S10-9, the system control unit 10 controls the data encoding unit 6 to read only the video data of the same content as the content encoded in step S10-7 from the buffer memory 3, and
1 to encode the backup data to be recorded.
Then, in step S10-10, the system control unit 1
Numeral 0 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded backup data is to be recorded, seeks the magnetic head to that position, and reads the magnetic disk 11 through the read / write control unit 9. Write backup data to the top. In step S10-11, if all the content from the higher-level device 1 has not been recorded, the process returns to step S10-3, and the recording of the recording data and the backup data is repeated.

As described above, the creation mode of the backup data for the content recorded on the magnetic disk 11 is set to record only the video data of the content, record only the audio data, or record both the video data and the audio data. The content is recorded on the magnetic disk 11 and the selected data is read out from the buffer memory 3 using the selected backup data creation mode, and the data is encoded. The backup data can be encoded by the unit 6 and recorded on the magnetic disk 11.

Further, in step S10-12, if there is a request to play back the recorded content, a command to play back the content is issued from the higher-level device 1, and step S10-
At 13, the content is reproduced. First, a reproduction command is received by the host interface unit 2. The host interface unit 2 informs the system control unit 10 that the playback command has been received from the host device 1, whereby the system control unit 10 analyzes the playback command received by the host interface unit 2, , And controls the position information management unit 8 to reproduce the content requested by the host device 1.
The physical position is calculated, the magnetic head is sought to the position, the recording data is reproduced from the magnetic disk 11 through the read / write control unit 9, the recording data is decoded into the frame data by the data decoding unit, and the buffer is decoded. It is temporarily stored in the memory 3. And the system control unit 10
Reads the frame data of the content temporarily stored from the buffer memory 3 and transfers it to the host device 1 through the host interface unit 2. Step S10
In step -14, if the above-described reproduction processing is normally performed without any error, step S10-16 is performed.
If the content requested by the host device 1 has been completely reproduced, the process ends. If not, the process returns to step S10-12 to perform the remaining reproduction. If an error has occurred in the reproduction processing in step S10-13 and the recorded data of the content cannot be corrected by error correction such as ECC, and has been lost, step S10-1.
4 to step S10-15, the position information management unit 8 is controlled to reproduce the backup data in order to reproduce the backup data corresponding to the recorded data of the lost content from the magnetic disk 11.
1, the magnetic head is sought to that position, the backup data is reproduced from the magnetic disk 11 through the read / write control unit 9, and the backup data is decoded into frame data by the data decoding unit. The data is temporarily stored in the buffer memory 3. Then, the system control unit 10 reads the backup frame data of the content temporarily stored from the buffer memory 3 and transfers the frame data to the host device 1 through the host interface unit 2.

As a result, even if the user does not create backup data for the content after recording the content, even if the user does not create the backup data for the content, in reproducing the content recorded on the magnetic disk 11, the recorded data of the read content is reproduced. When an error occurs and the content is lost, the backup data corresponding to the lost content on the magnetic disk 11 is read and played back, so that even if the backup data is only video data or only audio data, The minimum content of the content can be grasped, the trouble and time required to create backup data for the content can be reduced, and the amount of data for backup can be controlled.

Although the recording / reproducing apparatus has been described here, a data access control method of the recording / reproducing apparatus which can obtain the same effect except for such a configuration, and a recording medium on which the data access control method is recorded may be used. Conceivable.

Embodiment 6 Hereinafter, a recording / reproducing apparatus according to a sixteenth aspect of the present invention will be described with reference to the drawings. The configuration of the recording / reproducing apparatus according to the sixth embodiment is the same as that of the above-described first embodiment, and FIG. 1 is a block diagram thereof.

FIG. 11 is a diagram for explaining the operation of the sixth embodiment of the present invention. In the recording / reproducing apparatus 12 shown in FIG. The figure shows a process performed when the content is included, and a process performed by the recording / reproducing device 12 when the content is reproduced from the magnetic disk 11 and an error occurs during the reproduction.

FIG. 12 is a specific example of a method of determining a CM in a recorded content in the CM determining unit 4 according to the sixth embodiment of the present invention. FIG. It is a specific example of a process at the time of creation. FIG. 12 shows an example in which the CM discriminating section 4 discriminates and processes the CM in the content recorded on the magnetic disk 11 by changing the mode of the audio data of the content (monaural to stereo, stereo to monaural). However, it goes without saying that a CM determination method other than that shown in FIG. 12 may be used.

In step S11-1 of FIG. 11, the recording / reproducing apparatus 12 sets the backup data creation mode when recording the content in the initialization of the recording / reproducing apparatus 12 when the power is turned on. Here, the audio change flag indicating the change of the audio mode of the content and the CM flag indicating the CM are also cleared. Next, step S11-
In 2, the user sets the importance of the content to be recorded in the user selection unit 5 before recording the content. For example, if the user sets the importance level to B, this setting is transmitted from the user selection unit 5 to the system control unit 10, and the system control unit 10 sends the data encoding unit 6 and the data decoding unit 7 A data rate corresponding to the importance B is set. Next, in step S11-3, a content recording command is issued from the higher-level device 1 to the recording / reproducing device 12, and is received by the host interface unit 2 in step S11-4. The host interface unit 2 notifies the system control unit 10 that a recording command from the host device 1 has been received. Thereby, step S1
In 1-5, the system control unit 10 analyzes the recording command received by the host interface unit 2, recognizes that the command is a recording command to the magnetic disk 11, and in step S11-6, the system control unit 10 By controlling the device 12,
While temporarily storing the content data sent from the host device 1 in the buffer memory 3,
M is determined. The process at this time is shown in FIG.

In step S12-1 in FIG. 12, the frame data of the content transmitted from the higher-level device 1 and recorded is analyzed. Then, in step S12-2, the CM mode discriminator 4 holds the current audio mode of the content based on the analysis result of the frame data of the content transmitted from the higher-level device 1 and recorded. In step S12-3, the voice mode held in the CM discriminating unit 4 in step S12-2 is compared and analyzed with the currently analyzed frame data to detect a change in the voice mode. When a change in the voice mode is detected, the process proceeds to step S12-4, a voice change flag is set, and the process proceeds to step S12-5. If there is no change in the audio mode in step S12-3,
Proceed to step S12-5. In step S12-5, the frame data of the content is temporarily stored in the buffer memory 3. In step S12-6, if the audio change flag is set in the frame data of the content temporarily stored in the buffer memory 3 in step S12-5, the process proceeds to step S12-7, and step S12-7. Then, the storage address of the buffer memory 3 in which the frame data of the content is stored is stored in the CM discriminator 4, the voice change flag is cleared in step S12-8, and the process proceeds to step S11-7 in FIG. If the voice change flag has not been set in step S12-6, the process proceeds to step S11-7 in FIG. Therefore, if there is a change point in the audio mode, it is determined that it is a boundary between the content and the CM, and the storage position of the frame data on the buffer memory 3 is stored in the CM discriminator 4 as the address of the buffer memory 3. Keep it.

Subsequently, in step S11-7 in FIG. 11, the system control section 10 controls the data encoding section 6 to read out the content from the buffer memory 3 and encode it into recording data to be recorded on the magnetic disk 11. In step S11-8, the system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded recording data is to be recorded, seeks the magnetic head to that position, and reads the data. Write the recording data on the magnetic disk 11 through the write control unit 9. Subsequently, in step S11-9, the system control unit 10 controls the data encoding unit 6 to read the same content as the content encoded in step S11-7 from the buffer memory 3 and to store the backup data to be recorded on the magnetic disk 11. Encode to

FIG. 13 shows the processing at this time. In step S13-1 in FIG. 13, the system control unit 10 reads out frame data from the buffer memory 3 to create backup data. At this time, in step 13-2, the system control unit 10 stores the content stored in step S12-7 in FIG. 12 and the frame data that is the delimiter of the CM in the buffer memory 3 and the address in the buffer memory 3 to be read out. To compare. As a result of the comparison in step S13-3, step S12 in FIG.
If the storage address of the frame data, which is the delimiter between the content and the CM stored at −7, in the buffer memory 3 matches the address on the buffer memory 3 to be read out, it is a delimiter between the content and the CM.
Proceed to step S13-4. At this time, the frame data is either the frame data at the start of the commercial or the frame data at the start of the content after the end of the commercial. C
If the frame data is at the start of M, the CM flag is cleared, the system control unit 10 determines that the frame data is at the start of CM, and the process proceeds to step S13-6.
Then, the CM flag is set, and the process proceeds to step S13-7. In step S13-7, since the system control unit 10 has determined that the frame data is the frame data at the time of starting the CM, the system control unit 10 does not encode the backup data and does not perform recording on the magnetic disk 11.

If the CM flag has already been set in step S13-4, the system controller 10
Is determined to be frame data at the time of content start after the end of the CM, the CM flag is cleared in step S13-8, the process proceeds to step S13-9, and in step S13-9, the system control unit 10 Is read from the buffer memory 3 and encoded into backup data to be recorded on the magnetic disk 11. The system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded backup data is to be recorded, seeks the magnetic head to that position, and 9 to write the backup data onto the magnetic disk 11.

In step S13-3, the storage address in the buffer memory 3 of the frame data that is the delimiter between the content and the CM stored in step S12-7 in FIG. If they do not match, it is not CM or C
Either M, and the process proceeds to step S13-5. In step S13-5, the system control unit 10
If the M flag is cleared, it is determined that the content is not a CM, and the process proceeds to step S13-9. In step S13-9, the system control unit 10 controls the data encoding unit 6 to read the content from the buffer memory 3, The data is encoded into backup data to be recorded on the magnetic disk 11. The system control unit 10 controls the position information management unit 8 to calculate a physical position on the magnetic disk 11 where the encoded backup data is to be recorded, seeks the magnetic head to that position, and 9 to write the backup data onto the magnetic disk 11.

In step S13-5, if the CM flag is set, the system control unit 10
The process proceeds to step S13-10. In step S13-10, the system control unit 10 determines that this frame data is frame data in the CM, and thus does not encode the backup data and does not perform recording on the magnetic disk 11. Then, such processing is performed, and the process proceeds to step S11-10 in FIG.

If all contents from the higher-level device 1 have not been recorded in step S11-10,
Returning to step S11-3, the recording of the recording data and the backup data is repeated, and the recording of the content ends if all the recording has been completed.

As described above, while recording the content on the magnetic disk 11 and recording the backup data of the content, the CM discriminating section 4 discriminates the CM from the CM in the content. Then, when the recording of the backup data on the magnetic disk 11 is temporarily stopped by the system control unit 10 and the CM is finished and the content is restarted, the CM discrimination unit 4 also makes the discrimination, and the system control unit 10 makes a decision. Since the recording of the backup data on the magnetic disk 11 can be resumed and the backup data can be recorded on the magnetic disk 11, the time and effort required to create the backup data for the content can be reduced, and the CM in the content can be reduced. By not backing up, you can reduce and control the amount of data for backup Kill.

In step S11-1, if there is a request to reproduce the recorded content, a higher-level device 1 issues a content reproduction command.
At 2, the content is reproduced. First, a reproduction command is received by the host interface unit 2. The host interface unit 2 informs the system control unit 10 that the playback command has been received from the host device 1, whereby the system control unit 10 analyzes the playback command received by the host interface unit 2, And controls the position information management unit 8 to calculate the physical position on the magnetic disk 11 where the content requested by the host device 1 is to be reproduced, and seeks the magnetic head to that position. Then, the recording data is reproduced from the magnetic disk 11 through the read / write control unit 9, the recording data is decoded into the frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. And the system control unit 10
The frame data of the content temporarily stored is read out from the buffer memory 3 and transferred to the host device 1 through the host interface unit 2. Step S11-1
In step 3, if the above-described reproduction processing is performed normally without any error, the process proceeds to step S11-15, and if all the contents requested by the higher-level device 1 have been reproduced, the processing ends. If everything is not playing,
Returning to step S11-11, the remaining reproduction is performed. An error occurs in the reproduction process of step S11-12,
If the recording data of the content cannot be corrected by error correction such as ECC or the like and is lost, the process proceeds from step S11-13 to step S11-14, and the backup data corresponding to the recording data of the lost content is reproduced from the magnetic disk 11. To control the position information management unit 8, the physical position on the magnetic disk 11 for reproducing the backup data is calculated, the magnetic head is sought to the position, and the read / write control unit 9 controls the magnetic disk. The backup data is reproduced from 11, the backup data is decoded into frame data by the data decoding unit, and is temporarily stored in the buffer memory 3. Then, the system control unit 10 reads out the backup frame data of the content temporarily stored from the buffer memory 3 and passes the host device 1 through the host interface unit 2.
Transfer to

As a result, even if the user does not create backup data for the content after recording the content, even when the user does not create the backup data for the content, the recorded data of the read content is reproduced in the reproduction of the content recorded on the magnetic disk 11. If an error occurs and the content is lost, the backup data corresponding to the lost content on the magnetic disk 11 is read out and played back, so that it is troublesome to create backup data for the content without losing the content. This can reduce the time required for creation and can reduce and control the amount of data for backup by not backing up CMs in the content.

[0103]

As described above, the data access control method of the recording / reproducing apparatus according to the first and second aspects of the present invention, and the data access control method of the third aspect of the present invention. According to the recording medium on which the content is recorded, even if the user does not create backup data for the content after the content is recorded, the content is read out in the reproduction of the content recorded on the magnetic disk. When an error occurs in the recorded data of the content and the content is lost, the backup recording data of the content is read and reproduced, so that the backup of the content is performed without losing the content. The time and effort required to create data can be reduced. Recording and reproducing apparatus and can realize the data access method can control the amount of data for backup.

The recording / reproducing apparatus according to claim 4 of the present invention,
According to the data access control method of the recording / reproducing apparatus according to claim 5 and the recording medium recording the data access control method according to claim 6, after recording the content, the user can perform backup data for the content. Even if the creation of the content is not performed, in the reproduction of the content recorded on the magnetic disk, if an error occurs in the recorded data of the read content and the content is lost, By reading and playing back the recording data for backup of the content, it is possible to reduce the trouble and time required to create the backup data for the content without losing the content, and according to the keyword of the content specified by the user. Can control the amount of data for backup Recording and reproducing apparatus and the data access method kills can be realized.

The recording / reproducing apparatus according to claim 7 of the present invention,
According to the data access control method of the recording / reproducing apparatus according to claim 8, and the recording medium on which the data access control method according to claim 9 is recorded, after recording the content, the user performs backup data for the content. Even if the creation of the content is not performed, in the reproduction of the content recorded on the magnetic disk, if an error occurs in the recorded data of the read content and the content is lost, By reading and playing back the recording data for backup of the content, it is possible to reduce the trouble and time required to create the backup data for the content without losing the content, and to perform the backup according to the remaining capacity of the magnetic disk. Recording and playback device that can control the amount of data And it can realize the data access method.

According to a tenth aspect of the present invention, there is provided a recording / reproducing apparatus, a data access control method for a recording / reproducing apparatus according to the eleventh aspect, and a recording medium recording the data access control method according to the twelfth aspect. For example, even if the user does not create backup data for the content after recording the content, in the reproduction of the content recorded on the magnetic disk, the recorded data of the content read out is reproduced. If an error occurs and the content is lost, the backup recording data of the content is read out and played back without losing the content.
The labor and time required to create the backup data for the content can be reduced, and even if the change mode of the backup data creation mode of the content is specified while the content is being recorded, the Further, it is possible to realize a recording / reproducing apparatus capable of controlling the amount of data for backup according to the backup data creation mode and a data access method thereof.

According to a thirteenth aspect of the present invention, there is provided a recording / reproducing apparatus, a data access control method for a recording / reproducing apparatus according to a fourteenth aspect, and a recording medium recording the data access control method according to the fifteenth aspect. For example, even if the user does not create backup data for the content after recording the content, the time and effort required to create the backup data for the content can be reduced, and recording on the magnetic disk can be reduced. A recording / reproducing apparatus capable of controlling the amount of data for backup by selectively leaving the content of the content as video data only, audio data only, or both video data and audio data; and The data access method can be realized.

According to a recording / reproducing apparatus according to claim 16 of the present invention, a data access control method for a recording / reproducing apparatus according to claim 17, and a recording medium recording the data access control method according to claim 18. For example, even if the user does not create backup data for the content after recording the content, in the reproduction of the content recorded on the magnetic disk, the recorded data of the content read out is reproduced. If an error occurs and the content is lost, the backup recording data of the content is read out and played back without losing the content.
A recording / reproducing apparatus and a data reproducing apparatus that can reduce the trouble and time required to create the backup data for the content, and reduce and control the amount of data for backup by not backing up the CM in the specified content. The access method can be realized.

According to the recording / reproducing apparatus of the present invention, in the recording / reproducing apparatus, a mode for creating backup data of the content is designated from the user selecting section, and the content is recorded on the magnetic disk. At the time of recording, the frame data transmitted from the higher-level device with the data length designated by the higher-level device is received and temporarily stored in the buffer memory. The data encoding unit encodes the frame data read from the buffer memory into recording data, and the system control unit controls the position information management unit and the read / write control unit to transfer the recording data to the magnetic disk. Record above. Subsequently, the frame data is read out again from the buffer memory to the data encoding unit, and is encoded into backup data using the backup data creation mode specified by the user selection unit. The backup data is recorded on the magnetic disk by controlling the position information management unit and the read / write control unit. Then, even after the content is recorded, even if the user does not create backup data for the content, the reproduction of the content recorded on the magnetic disk may cause When an error occurs and the content is lost, the backup data of the content is read, and the data is decoded and reproduced by the data decoding unit into frame data. It is possible to realize a recording / reproducing apparatus capable of controlling the amount of the backup data by reducing the time and effort required to create data.

As described above, according to the recording / reproducing apparatus, the data access control method of the recording / reproducing apparatus, and the recording medium on which the data access control method is recorded according to the present invention, after recording the content, the user Even if backup data is not created, loss of content due to errors during content playback can be prevented, the effort and time required to create backup data for content can be reduced, and the amount of data for backup can be controlled. And a data access method therefor.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 1.

FIG. 2 is a diagram showing a specific example of a content recording and content importance-based backup data creation mode according to the first embodiment.

FIG. 3 is an explanatory diagram of an operation of the recording / reproducing apparatus according to the first embodiment.

FIG. 4 is a diagram showing a specific example of a keyword of a content and an initial setting of a backup data creation mode according to the second embodiment.

FIG. 5 is a diagram showing a specific example of a keyword and backup data creation mode change setting according to the second embodiment.

FIG. 6 is an explanatory diagram of an operation of the recording / reproducing device according to the second embodiment.

FIG. 7 is an operation explanatory diagram of the recording / reproducing apparatus according to the third embodiment.

FIG. 8 is an operation explanatory diagram of the recording / reproducing apparatus according to the fourth embodiment.

FIG. 9 is a diagram showing a specific example of a content backup data creation mode according to the fifth embodiment.

FIG. 10 is an operation explanatory diagram of the recording / reproducing apparatus according to the fifth embodiment.

FIG. 11 is an explanatory diagram of an operation of the recording / reproducing device according to the sixth embodiment.

FIG. 12 is a diagram illustrating a specific example of a method for determining a CM in content recorded by a CM determining unit according to the sixth embodiment.

FIG. 13 is a diagram showing a specific example of a process at the time of creating backup data corresponding to FIG. 12 according to the sixth embodiment.

FIG. 14 is an operation explanatory diagram in a case where backup data for original data on a magnetic disk is created by a command from a higher-level device in a conventional recording / reproducing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High-order apparatus 2 Host interface part 3 Buffer memory 4 CM discriminating part 5 User selection part 6 Data encoding part 7 Data decoding part 8 Position information management part 9 Read / write control part 10 System control part 11 Magnetic disk 12 Recording / reproducing device

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B018 GA04 HA03 MA12 QA01 5B065 BA01 CA11 CE11 EA35 ZA15 5D044 AB07 BC01 CC05 DE29 DE48 DE54 EF03 EF05 FG18 GK12 HL02 5D110 AA13 AA29 DA18 DB03 DC06 DC18 DE01

Claims (19)

[Claims] 1. A recording / reproducing apparatus for reading and writing various information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium, comprising: A backup data creation mode for content that is large-capacity continuous data is set in advance according to the importance of the content, and the content is recorded on the magnetic disk, and the mode corresponding to the importance of the content is set. Recording means for recording the backup data on the magnetic disk using the backup data creation mode. 2. A data access control method for a recording / reproducing apparatus for reading / writing various information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium, wherein the data is recorded on the magnetic disk. For example, a backup data creation mode for content that is large-capacity continuous data such as moving image data is set in advance according to the importance of the content, and the content is recorded on the magnetic disk and the content is recorded. A data access control method for a recording / reproducing apparatus, comprising a recording step of recording the backup data on the magnetic disk using the backup data creation mode corresponding to the importance. 3. A recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium is provided. The backup data creation mode for content that is large-capacity continuous data, such as moving image data, is set in advance according to the importance of the content, and the content is recorded on the magnetic disk. Recording the data access control program for a recording / reproducing apparatus, further comprising a recording step of recording the backup data on the magnetic disk using a mode for creating the backup data corresponding to the importance of the content. Characteristic recording medium. 4. A recording / reproducing apparatus for reading / writing various kinds of information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium, wherein, for example, moving image data or the like is recorded on the magnetic disk. A keyword configured by a genre, a cast, and the like of the content, which is large-volume continuous data, and a backup data creation mode of the content determined by the keyword are specified in advance by a user's selection. A recording / reproducing apparatus comprising: recording means for recording the content on a magnetic disk and recording the backup data on the magnetic disk using the creation mode specified by a user. 5. A data access control method for a recording / reproducing apparatus for reading / writing various information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium, wherein the data is recorded on the magnetic disk. For example, a keyword configured by a genre or a performer of content that is large-capacity continuous data such as moving image data and the like, and a backup data creation mode of the content determined by the keyword are designated by a user in advance. Recording the content on the magnetic disk, and recording the backup data on the magnetic disk using the creation mode specified by a user, A data access control method for a recording / reproducing device. 6. A recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium is provided. For example, a keyword configured by a genre or a performer of a content that is large-capacity continuous data such as moving image data and the like, and a backup data creation mode of the content determined by the keyword are set in advance. Recording the content on the magnetic disk, and recording the backup data on the magnetic disk by using the creation mode specified by the user, Data access control program for recording / reproducing device A recording medium characterized by recording a program. 7. A recording / reproducing apparatus for reading / writing various kinds of information recorded on a magnetic disk used as a recording medium by accessing the magnetic disk. When recording content that is continuous capacity data, the user is notified of the remaining recordable capacity on the magnetic disk, and the mode of creating backup data of the content that can be recorded on the notified recordable capacity is set. The content is recorded on the magnetic disk in advance, and the backup data is recorded on the magnetic disk by using the backup data creation mode specified by the user. Recording / reproducing apparatus, characterized by having recording means. 8. A data access control method for a recording / reproducing apparatus for reading / writing various information recorded on a magnetic disk used as a recording medium by accessing the magnetic disk. When recording content that is large-capacity continuous data such as, etc., notifies the user of the remaining recordable capacity on the magnetic disk, and backs up the content that can be recorded on the notified recordable capacity. A data creation mode is specified by a user in advance, and the content is recorded on the magnetic disk, and the backup data is written to the magnetic disk using the backup data creation mode specified by the user. Having a recording step of recording on a disc; To, data access control method for a recording and reproducing apparatus. 9. A recording medium in which a data access control method for a recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium is recorded. For example, when recording content that is large-capacity continuous data such as moving image data, the user is notified of the remaining recordable capacity on the magnetic disk, and can be recorded in the notified recordable capacity. The backup data creation mode of the content is specified in advance by a user's selection, the content is recorded on the magnetic disk, and the backup data creation mode specified by the user is used. Recording a backup data on the magnetic disk; A recording medium, characterized by recording the data access control program for a recording / reproducing device. 10. A recording / reproducing apparatus for reading / writing various information recorded on a magnetic disk used as a recording medium by accessing the magnetic disk. In addition to recording content that is continuous data,
If the change of the backup data creation mode is specified while recording the backup data of the content on the magnetic disk using an arbitrary creation mode, the backup data creation mode is changed. And a recording means for recording the backup data on the magnetic disk in accordance with the changed creation mode. 11. A data access control method for a recording / reproducing device for reading / writing various information recorded on a magnetic disk used as a recording medium by accessing the magnetic disk. While recording content that is large-capacity continuous data such as
When the change mode of the backup data creation mode is specified while recording the content backup data on the magnetic disk using an arbitrary creation mode, the backup data creation mode is changed. And a recording step of recording the backup data on the magnetic disk according to the changed creation mode. 12. A recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium is provided. To, for example, while recording content that is large-capacity continuous data such as moving image data,
When the change mode of the backup data creation mode is specified while recording the content backup data on the magnetic disk using an arbitrary creation mode, the backup data creation mode is changed. And a recording step of recording the backup data on the magnetic disk in accordance with the changed creation mode, wherein the data access control program for a recording / reproducing apparatus is recorded. 13. A recording / reproducing apparatus for reading and writing various information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium, comprising: The backup data creation mode for a content that is large-capacity continuous data is determined by recording only the video data of the content, recording only the audio data of the content, or both the video data and the audio data of the content. Or recording the content on the magnetic disk, and using the selected backup data creation mode to store the backup data on the magnetic disk. Recording means for recording, , Recording and playback device. 14. A data access control method for a recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium, wherein the data is recorded on the magnetic disk. For example, the mode of creating backup data for content that is large-capacity continuous data such as moving image data, for example, is to record only the video data of the content, to record only the audio data of the content, or to record the video data of the content. Whether to record both data of the audio data or to select one of them, while recording the content on the magnetic disk, using the selected backup data creation mode, the backup data, Recording step for recording on the magnetic disk To have, and wherein the data access control method for a recording and reproducing apparatus. 15. A recording medium on which a data access control method for a recording / reproducing apparatus for reading / writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium is provided. Recorded in, for example, a backup data creation mode for content that is large-capacity continuous data such as moving image data, whether to record only the video data of the content, or to record only the audio data of the content, Whether to record both the video data and the audio data of the content, or to select from among them, perform the recording of the content on the magnetic disk, and use the selected backup data creation mode. And storing the backup data on the magnetic disk. And a recording step of recording, the recorded the recording and reproducing apparatus for data access control program, characterized by, recording medium. 16. A recording / reproducing apparatus for reading / writing various information recorded on a magnetic disk by accessing a magnetic disk used as a recording medium, wherein a large capacity such as moving image data is written on the magnetic disk. While recording the content as continuous data, while recording the backup data of the content on the magnetic disk, in the content,
Recording means for temporarily stopping the recording of the backup data on the magnetic disk for an unnecessary portion such as a CM, and restarting the recording of the backup data on the magnetic disk after the unnecessary portion is completed. A recording / reproducing apparatus, comprising: 17. A data access control method for a recording / reproducing device for reading / writing various information recorded on a magnetic disk used as a recording medium by accessing the magnetic disk. While recording content that is large-capacity continuous data such as, while recording backup data of the content on the magnetic disk, in the content,
For example, for an unnecessary part such as a CM, a recording step of temporarily stopping the recording of the backup data on the magnetic disk and restarting the recording of the backup data on the magnetic disk after the end of the unnecessary part. A data access control method for a recording / reproducing device, comprising: 18. A recording medium on which a data access control method for a recording / reproducing apparatus for reading and writing various information recorded on the magnetic disk by accessing a magnetic disk used as a recording medium is recorded. To, for example, while recording content that is large-capacity continuous data such as moving image data, and while recording backup data of the content on the magnetic disk,
For example, for an unnecessary part such as a CM, a recording step of temporarily stopping the recording of the backup data on the magnetic disk and restarting the recording of the backup data on the magnetic disk after the end of the unnecessary part. A recording medium characterized by recording the data access control method for a recording / reproducing device, comprising: 19. A buffer memory capable of storing a plurality of frame data of content of large-capacity continuous data such as moving image data to be reproduced or recorded on a magnetic disk, and a frame data of the content received from a host device An unnecessary part discriminating unit that discriminates an unnecessary part such as a CM part, a user selecting unit that stores various set values in the operation of the recording / reproducing apparatus designated by the user, and allows the user to select and change them, A data encoding unit that encodes the frame data of the content received from a higher-level device at a plurality of different data rates as recording data and backup data to the magnetic disk when recording the content on the magnetic disk; When playing back the content, A data decoding unit for decoding record data and backup data recorded at a plurality of different data rates read from the disc into frame data for output to the host device; read / write for reproducing and recording the content A control unit; a position information management unit that manages physical position information for the content on the magnetic disk; a data decoding unit, the data encoding unit, and the unnecessary part in an operation mode specified by the user selection unit The discrimination unit is controlled, the position information management unit is controlled to perform seek control on the magnetic head, and a reproduction command or a recording command for the recorded data and backup data of the content on the magnetic disk is sent to the read / write control unit. Can give and control the entire recording and playback device A recording / reproducing apparatus, comprising: a system control unit;