JPS59188814A - Medium recording system - Google Patents

Abstract

PURPOSE:To attain a medium recording system which can easily perform the cancelling and substitute processing of data by providing an area to store the identification information showing the record attribute after the header part of a record on a medium and an area to store the identification information showing the substitute originator at the head of a data part respectively. CONSTITUTION:When the data is written, the information on the desired cylinder and record number is obtained by a command given from a central processing unt. Thus the cylinder number and record number of an ID part 1 are obtained. Then a record which is coincident with the information of the part 1 is searched. When this desired record is detected, the logic address of the record itself is written to the head of the data part of the record together with the data sent from the central processing unit. Then the data of the data part is read out and verified to the same record. If this result is normal, it is decided that the writing action is normally finished. If the verified result contains an error, it is checked whether an unused substitute record exists in a substitute record region secured on the same circumference of a circle. Then the information on the part 1 of the corresponding substitute record if the unused substitute record exists.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field to which the Invention Pertains] The present invention relates to a medium recording system, and particularly to a medium recording system for storing xDh data in a multi-ink head type optical disk device.

[Prior art]

In the conventional media recording system, each record to be recorded includes a header section for storing record identification information indicating a record that is a unit of recording division, and a data section for storing data.

Next, a conventional medium recording method will be explained with reference to the drawings.

FIG. 1 (al, (b), (C), +d) shows an example of a medium recording system of a conventional optical disk device.

FIG. 1(a) is a plan view of the original disk plate, and 11t shows the original disk plate. FIG. 1(b) is a record configuration diagram showing an example of an optical disc format, and 12 indicates a 5-byte ID section. FIG. 1(C) is an ID section configuration diagram of this ID section. FIGS. 1(d) and 1(e) are medium cross-sectional views for explaining data writing and reading;
14 each indicates a lens.

Here, the header section is created by a pressing process during the manufacture of the optical disk plate 11, and the header section and the data section are distinguished from each other based on the reflected light depending on the depth of the groove.

Conventionally, when data is loaded into an optical disk (medium) used in this type of original disk device.

Light (laser beam) as shown in Figure 1 [dl or (e)]
irradiates a hole in the medium and stores information. When reading data, light is irradiated as shown in FIG. 1(d) or (e), and J:9 data is read from the reflected light.

A conventional medium recording method for recording data in a source disk device is shown in FIGS. 1(a) and 1(b).

In conventional media recording systems, a record, which is a storage unit in which all data is recorded, is divided into a header section and a data section, as shown in Figure 1 (b), and the header section is used as identification information for the data section. . To create the soda part, the first step is to
As shown in Figure (d), the header part is written from the beginning in the push/pull process at the stage of manufacturing the original disc board, and the header part is not written at the time of manufacturing the optical disc board.
As shown in FIG. 1(e), when data is not written in the data section, the header section sometimes collapses at the same time.

As mentioned above, in either case, when data is written, a hole is created on the medium, making it impossible to update the data.

This has the disadvantage that the data cancellation/alternative process performed in magnetic disk drives and the like is extremely difficult, and there are significant restrictions on the use of computer systems.

That is, the conventional media recording method has the disadvantage that it is not easy to cancel or replace data.

[Object of the Invention J An object of the present invention is to provide a medium recording method that can easily accomplish data cancellation and replacement processing.

That is, an object of the present invention has been made in order to eliminate the above-mentioned drawbacks inherent in the conventional technology.In a moving head type optical disk device, the attributes of the record are indicated after the header portion of the record on the medium. By providing a section for storing identification information, it is possible to easily cancel data, and by placing an overlay at the beginning of the data section for storing the identification information of the replacement source, replacement processing is facilitated and access is made easier. The objective is to provide a new media recording method that can improve time.

[Structure of the invention]

In the medium recording method of the present invention, each recorded record has a header section that stores record identification information that designates a record that is a record division unit, and an alternative identification information that stores data and designates an alternative record. and a flag section that stores record attribute identification information indicating that the data in the data section is invalid when written.

That is, the medium recording method of the present invention includes a flag section for storing identification information indicating the attribute of the record, and a data section after the beginning and end sections of a record on the medium of a five-dimensional disk board in a moving head type optical disk device. A portion for storing alternative light identification information for easily performing alternative processing is provided at the beginning of the section, so that one alternative processing can be performed easily and at high speed.

In other words, the medium recording method of the present invention facilitates data cancellation by providing a section for storing identification information indicating the attributes of the record after the header section of the record in the moving head type source disk device. By providing a section for storing the identification information of the replacement source at the beginning of the data section, the replacement process is facilitated and the access time can be improved.

Embodiment Next, a practical example of the present invention will be specifically explained with reference to one drawing. ' Figures 2, 3 (a) and 3 (b), 4 j and 5 are diagrams for explaining an example of the present invention.

FIG. 2 is a diagram showing a recorded portion of a record on an optical disk. Figure 3(a) shows record 0 of cylinder 001.
2 has an error in the data section, and "FO" is written in the flag section as identification information indicating that the record is defective. FIG. 3(b) shows that record O□2 of cylinder 001 FIG. 12 is a diagram showing that there was an error in the record, and the 6-veta data written in the record was replaced with record n-3 of cylinder 001. FIG. 4 is a flowchart showing the progress of the alternative process. FIG. 5 is a 70-chart showing the progress of the read operation.

Table 1 is a table explaining the meanings of the flags in the embodiment shown in FIG.

In Table 1, Figures 2 to 5, reference number 21 is a 5-byte I
D part 1, reference number 22 is a 1-byte flag part, reference number 23 is a 5-byte ID part 2, reference number 24 is a data area, and reference number 25 is a defect in records 1 to n-4 on the same circumference. An alternative record area bA, which is reserved for one alternative when available, is shown. ID1l shown in FIG. 2 is its own logical address % ID part 2 is its own logical address when the data in the following data part is valid, or
If the record is an alternative record area, each indicates the logical address of the alternative source.

In manufacturing the original disk plate, a sheet metal having the recording portion shown in FIG. 2 is manufactured, and a record is formed on the original disk plate.

When writing data to the data section, information about the target cylinder and record number is sent by command from the central processing unit.
Then, the cylinder number and record number of ID section 1 are known.

Next, a search is made for a record that matches the IDgx information. If the target record is not detected, write the record's own logical address (same as the contents of ID section 1) at the beginning of the data section of the record (ID section 2 section), and then write the record's own logical address (same as the contents of ID section 1). Writes the data sent by the user. When the write operation is completed, the data in the data section of the same record is read and verified. If the verified result is normal, it is determined that the write operation has completed normally. If there is an error in the verified result, check whether there is an unused alternative record in the alternative record area secured on the same circumference.If an unused alternative record exists, The information in the ID section 1 of the alternative record is stored.

Next, search for the record that caused an error as a result of verification, and set “FO” to the flag section of the record that caused the error.
invalidates the data in that record (this causes
By reading the flag part during read operation, it becomes possible to identify whether the data of the record is valid or invalid. ), then search for an inconvenient alternative record in the alternative record area stored above. If an unused alternative record is detected, write the contents of ID part 1 (alternative source logical address) of the record in which the error occurred first to the beginning of the data part (ID part 2 part), and then write the error. Write the data to be written to the resulting record. Due to this.

Alternative processing can be performed automatically and quickly with a single command from the central processing unit.

The above operation can be more easily understood by referring to FIGS. 3 and 4.

Next, when reading data in the data section, information on the target cylinder and record number is obtained by a command from the central processing unit, and the cylinder number and record number of the ID section 1 are known. Then, a search is made for a record that matches the information in the ID section 1. If the target record is detected, the flag section of the record is read. As a result of reading, if the flag section is in an unwritten state, the data in the subsequent data section is read and transferred to the central processing unit. The result of reading the flag section is “FO”
If it is written, the record has been substituted and it is determined that the data in the record is invalid. After determining that it is invalid, (I
Part D 2) Search for an alternative record in which the logical address of the record is recorded. If an alternative record in which the logical address of the record is recorded at the beginning of the data section (ID section 2) is detected, the data of the alternative code is read out and transferred to the central processing unit.

The above operation can be more easily understood by referring to FIGS. 3 and 5.

As a result of the above, the central processing unit does not need to be aware of where the alternative record exists, and can perform alternative processing automatically and at high speed.

〔Effect of the invention〕

By adding a 7-lag section to each record, the media recording method of the present invention can store record attribute information indicating that the data in the data section is invalid when written. This has the effect of facilitating alternative processing.

That is, the medium recording method of the present invention is such that, in the original disk device, after the header part of the record on the medium of the original disk board, a flag part for storing identification information indicating the attribute of the record, and an alternative flag part at the beginning of the data part. By providing a section for storing alternative optical identification information to facilitate processing, there is an effect that data cancellation and alternative processing can be performed easily and at high speed.

[Brief explanation of drawings]

Figure 1 (a), (b), (C), (d), (e
) is a plan view, a record purchasing diagram, an ID part purchasing diagram, and two medium cross-sectional views showing an example of the media recording method of a conventional optical disk device, and FIG. 2 is an example of the media recording method of the present invention. 3(a) and 3(b) are record configuration diagrams when alternative processing is performed using the embodiment shown in FIG. 2, and FIG. 4 is a write diagram in the embodiment shown in FIG. FIG. 5 is a flowchart showing an example of the operation, and FIG. 5 is a chart 7a showing an example of the read operation in the embodiment shown in FIG.

Claims (1)

[Claims] Each recorded record has a header section that stores record identification information that indicates the record that is the record division unit, a data section that stores data and alternative identification information that indicates an alternative record, and when written. and a 72 tag section for storing record attribute identification information indicating that the data in the data section is invalid.