JP2725343B2 - Data recording device and method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a disk recording apparatus and a data recording method suitable for recording audio data, video data or computer data on a recording medium such as a disk. About.

[Summary of the Invention]

According to the present invention, input data is sequentially recorded in a series of unit recording areas of a recording medium, and when a non-recordable unit recording area is detected, corresponding data is stored in a memory. By recording the contents of the memory in a specific unit recording area of the recording medium,
The advantage of both the continuous processing and the replacement processing, that is, real-time property and high reliability can be obtained.

[Conventional technology]

Generally, when recording data on a recording medium, two modes are considered: a continuous processing mode used when recording continuous information such as audio data and video data, and an alternate processing mode usually used for storage of computer data. .

In the case of audio data or video data used in the continuous processing mode, real-time performance is required, but interpolation processing can be performed because continuous data have a correlation with each other, and the effect of errors can be avoided to some extent. .

On the other hand, in the replacement processing mode, when a sector to which a disk is to be written at the time of shipment of, for example, a hard disk or a magneto-optical disk has a defective place due to a scratch or the like, a bad sector mark is added so that the sector cannot be used. ,
Corresponding data is written to a spare sector prepared as a spare so that it jumps to the spare sector at the time of read-after-write or the like.

[Problems to be solved by the invention]

However, in the continuous processing mode described above, although there is an advantage of real-time property, if the error exceeds a certain size, processing cannot be completed, and there is a disadvantage that reliability is poor. Further, in the case of the replacement processing mode, although there is an advantage that high reliability can be obtained, there is a disadvantage that real-time operation is difficult.

The present invention has been made in view of the above points, and provides a data recording apparatus and a data recording method capable of performing processing by taking advantage of both continuous processing and replacement processing.

[Means for solving the problem]

A data recording device according to the present invention includes, as shown in FIGS. 1 and 3, for example, means (9) for determining whether or not input data is data to be processed in a continuous processing mode;
Means (9) for sequentially recording the input data in a series of unit recording areas of the recording medium (6) when the input data is data to be processed in the continuous processing mode; If the data is not data to be recorded, the input data is successively recorded in a series of unit recording areas of the recording medium (6), and if a non-recordable unit recording area is detected, the corresponding data is stored in the memory (5). Means (9) for recording the contents of the memory (5) in a specific unit recording area of the recording medium (6) when the recording of all the input data is completed.
And

Further, the data recording method according to the present invention can be used, for example, in the first method.
As shown in FIG. 3 and FIG. 3, when the input data is data to be processed in the continuous processing mode, and when the input data is data to be processed in the continuous processing mode, Successively recording sequentially in a series of unit recording areas of the recording medium (6), and when the input data is not data to be processed in the continuous processing mode, continuously input data in a series of units of the recording medium (6). While the recording is sequentially performed on the recording area, when the non-recordable unit recording area is detected, the corresponding data is stored in the memory (5), and when the recording of all the input data is completed, the contents of the memory (5) are stored in the recording medium (6). ) Recording in a specific unit recording area.

[Action]

It is determined whether or not the input data is data to be processed in the continuous processing mode (for example, audio data or video data). If the data is not to be processed in the continuous processing mode (for example, if it is computer data), it is sequentially recorded in the unit recording area, and sequentially recorded in a series of unit recording areas of the recording medium (6). When a non-recordable unit recording area is detected, the corresponding data is stored in the memory (5), and when the recording of all the input data is completed, the contents of the memory (5) are recorded in a specific unit recording area of the recording medium (6). To do it. This allows
The advantages of both the real-time property in the continuous processing mode and the high reliability in the alternate processing mode can be secured.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3, taking an example in which a magneto-optical disk is used as a recording medium.

FIG. 1 shows a circuit configuration of the present embodiment. In FIG. 1, (1) is an upper device, (2) is a magneto-optical disk storage device, and (1) is a magneto-optical disk storage device. It is connected to (2) to input and output data.

The magneto-optical disk storage device (2) includes an interface circuit (3), a write circuit (4), a memory (5), a magneto-optical disk (6), an optical head (7), and a read circuit (8). ) And a control unit (9).

The interface circuit (3) is connected to the host device (1) and converts input / output signals. The write circuit (4) receives the output signal from the interface circuit (3) as an input and outputs a signal for writing data to the magneto-optical disk (6) to the optical head (7). When a defective sector as a non-recordable unit recording area such as a defective sector or a sector whose address cannot be read is detected at the time of recording, the memory (5) is a memory using a buffer, for example, a RAM for temporarily storing the corresponding data. It is. The optical head (7) is a magneto-optical disk (6)
Is read and supplied to a read circuit (8). The control unit (9) is a circuit for controlling the entire magneto-optical disk storage device (2), and is connected to each block.

Next, the operation of FIG. 1 will be described with reference to the flowchart of FIG. 2, taking as an example the case of recording computer data.

When the higher-level device (1) issues a write command to the magneto-optical disk storage device (2) in step (11), the mode becomes the write mode,
Computer data is supplied from the host device (1) to the writing circuit (4) via the interface circuit (3). In step (12), the write circuit (4) determines whether the sector is a bad sector or a sector from which an address cannot be read, that is, whether it is a non-recordable sector.
In 3), the writing circuit (4) writes the input data to a predetermined sector of the disk (6) via the optical head (7).

On the other hand, if a positive result is obtained in step (12), in step (14), the writing circuit (4) stores data corresponding to the defective sector or the sector whose address could not be read in the memory (5). In step (15), it is determined whether or not the data transmission has been completed. If all the data transmission has not been completed yet, the process moves to the next sector in step (16) and the same operation as described above is repeated. Es

If all the data has been sent out in step (15), in step (17) the writing circuit (4) reads out the data stored in the memory (5) and reads the data via the optical head (7). The data is written in the specific unit recording area (6), for example, in a replacement sector.

When the memory (5) becomes full in step (14), for example, the processing may be switched to normal continuous processing, or may be temporarily interrupted and written to the replacement sector.

Next, an example in which data to be recorded includes audio data or video data (hereinafter referred to as A / V data) and computer data will be described with reference to the flowchart of FIG. In FIG. 3, parts corresponding to those in FIG.

In step (11), when a write command is issued from the host device (1) to the magneto-optical disk storage device (2), a write mode is set, and data is sent from the host device (1) via the interface circuit (3) to the write circuit (3). 4). In the write circuit (4) in step (18), the input data is
It is determined whether or not the data is A / V data. If the data is A / V data, in step (13), the writing circuit (4) sends the input A / V data to the disk (6) via the optical head (7). To a predetermined sector.

If it is not A / V data in step (18), that is, if it is computer data, it is determined in step (12) whether or not it is a bad sector or a sector whose address cannot be read. If a negative result is obtained, then in step (13) The writing circuit (4) writes the input computer data to a predetermined sector of the disk (6) via the optical head (7).

On the other hand, if a positive result is obtained in step (12), in step (14), the write circuit (4) stores computer data corresponding to the defective sector or the sector whose address could not be read in the memory (5). In step (15), it is determined whether or not data transmission has been completed. If all data transmission has not yet been completed, the process moves to the next sector in step (16).
The same operation as described above is repeated.

If all the data has been sent out in step (15), in step (17) the writing circuit (4) reads out the computer data stored in the memory (5) and outputs it via the optical head (7). The data is written in a specific unit recording area of the disk (6), for example, at a location of a replacement sector.

In this case as well, when the memory (5) becomes full in step (14), for example, the processing may be switched to normal continuous processing, or may be temporarily interrupted and written to the replacement sector.

Further, in the above-described embodiment, the area of the replacement sector may use a part of a predetermined track in the middle or the outer circumference of the disk, or may be used over a plurality of sectors or a plurality of tracks.

〔The invention's effect〕

As described above, according to the present invention, it is determined whether or not input data is data to be processed in the continuous processing mode (for example, A / V data). Are sequentially recorded in a series of unit recording areas,
On the other hand, if the data is not data to be processed in the continuous processing mode (for example, if it is computer data), it is sequentially recorded in a series of unit recording areas of the recording medium, while recording a defective sector or a sector whose address cannot be read. When an unacceptable unit recording area is detected, the corresponding data is stored in the memory,
When the recording of the input data is completed, the contents of the memory are recorded in a specific unit recording area such as a replacement sector of the recording medium. High reliability can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIGS. 2 and 3 are flow charts for explaining the operation of the present invention. (1) Host device, (2) Magneto-optical disk storage device,
(4) is a writing circuit, (5) is a memory, (6) is a magneto-optical disk, and (7) is an optical head.

Claims (2)

(57) [Claims] 1. A means for determining whether or not input data is data to be processed in a continuous processing mode, and when the input data is data to be processed in a continuous processing mode, the input data is continuously processed. Means for sequentially recording in a series of unit recording areas of the recording medium, and when the input data is not data to be processed in the continuous processing mode, sequentially recording the input data in a series of unit recording areas of the recording medium sequentially; Means for storing the corresponding data in a memory when a non-recordable unit recording area is detected, and for recording the contents of the memory in a specific unit recording area of the recording medium when all the recording of the input data is completed. A data recording device, characterized in that: Determining whether or not the input data is data to be processed in a continuous processing mode; and when the input data is data to be processed in a continuous processing mode, continuously determining the input data. Sequentially recording in a series of unit recording areas of the recording medium, and when the input data is not data to be processed in the continuous processing mode, sequentially recording the input data sequentially in a series of unit recording areas of the recording medium; Storing the corresponding data in a memory when a non-recordable unit recording area is detected, and recording the contents of the memory in a specific unit recording area of the recording medium when all the recording of the input data is completed. A data recording method, characterized in that: