JPS58203634A - Data recording system to disk - Google Patents

Abstract

PURPOSE:To shorten the working time, by recording data in the data recording region on a disk and checking the quality of the data and recording the flag information showing the checking result behind the data recording region. CONSTITUTION:As shown in (A), the data is written to a data recording region 5 designated in the figure showing the conventional data format of each sector applied with a magnetic disk. Then the written data part is read and checked after a turn of the disk, and the checking result is written to a flag part 4 after another turn of the disk to complete the recording process. In this invention, on the contrary, the part 4 performs the recording process at each sector in a data format arriving after the data part 5 as shown in (B).

Description

[Detailed Description of the Invention] Object of the Invention The present invention relates to a data recording method on a disk, and in particular, data recording control on a disk such as an optical disk in which information cannot be rewritten in an area where information has already been written. Regarding.

Prior Art Conventionally, in a recording medium such as a magnetic disk in which data can be rewritten in the recording area, a flag section is provided in front of the data section as a data format, and the usability of the data section is checked in advance. The results could be recorded in the flag section as flag information. However, once information is recorded on an optical disc, it is impossible to rewrite data to this area, so it is not necessary to check the quality of the data section in advance. Therefore, after the data write operation during actual data recording, it is necessary to read out the data and check whether the writing was performed correctly, that is, check the quality of the data section. Therefore, if the data format used in conventional magnetic disks is applied to optical disks, the flag area has already passed the head position by the time the quality check of the data area is completed, so the check result is recorded in the fluff area as flag information. For(
This method has the disadvantage that it takes a long time to operate because it is necessary to wait until the disk rotates once and the flag section returns to the head position.

OBJECTS OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to shorten the data recording operation time for a non-rewritable disk device.

To achieve the above object, the present invention checks the quality of the recorded data after recording data in a data recording area on a disk, and records flank information indicating the check result after the data recording area. It is characterized by the following.

Examples of the invention and its results Hereinafter, the present invention will be described with reference to a non-detailed first side.

In the optical disc, as shown in FIG. 1, the recording surface 10 is divided into a plurality of sectors 11-1 to 11-N 71, and information is written by irradiating the track reflective film portion 12 of each sector with a laser beam to write the bit "1". This is done by forming a bit on a reflective film that corresponds to "" or "0."

FIG. 2 (A) is a diagram showing the conventional data format of each sector that has been adopted in Yamaki discs, where 3 is an LD section consisting of a track address, sector address, head address, etc., 4 is a flag section, 5 is a data section.

This data format)? If it is used as is on an optical disc, after writing data to the designated data recording area 5, the disc will be 11G! The recording process is completed by performing a read check on the written data section after one rotation, and then writing the result of the data check into the flag section 4 after another 110j rotation. That is, as shown in FIG. 5(B), each of the data write 21, data read check 22, and flag information write 23 takes one rotation of time T, ~゛I.
, and the time required for convolution processing becomes long. Incidentally, FIG. 6(A) shows a time chart of the index signal.

In contrast, the present invention performs recording processing in a data format in which the flag section 4 comes after the data section 5 in each sector as shown in FIG. !2nd (, In the first rotation, the target address on the disk is detected and the data is written to the DATA section 5 (21), and in the second rotation, the readout of the DATA section 5 is checked (22), and after the check is completed, When the F0 section 6 comes to the position of the head 1, the check result is written as flag information (23), and one write processing operation can be completed.In other words, the processing time can be reduced compared to the conventional method.

Note that if the track shape on the medium is not concentric but spiral, not only the rotation waiting time but also the head movement (seek) time is required, so the time reduction effect of the present invention is even greater than that of the conventional method. Large and 1f.

Effects of the Invention As is clear from the above description, according to the present invention, the data read check result can be written on the disk surface immediately after data is written, so the write processing operation can be completed with a small number of disk revolutions. This has the effect of shortening the required time.

[Brief explanation of drawings]

Figure 1 shows the track interval I of the optical disc, Figure 2 (Al, (B)
(A) is a diagram showing the difference in data format between the conventional method and the present invention method, (A) is a time chart of the write operation, (A) is a time chart of the index signal),
(B) is a chart of the conventional method, (Bl is an operation time chart of the method of the present invention. 10...Disk 3...Address information section 4...Flag information section 5...Data section substitute Private Patent Attorney Usui 1) Available

Claims (1)

[Claims] After data is recorded in the data recording area on the disk specified by the address part, the quality of the recorded data is checked, and flag information indicating the check result is recorded after the data recording area. A method for recording data on discs.