JPH041979A - Recording/reproducing device - Google Patents

Abstract

PURPOSE:To shorten the information retrieving time by writing the directory information on a ROM part to a directory zone of a recordable part before using partial ROM disk and then using the directory information on the recordable area. CONSTITUTION:A directory zone 26 is provided to a recordable part 25 of a partial reproduction-only (ROM) disk 20. Then a directory 23 of a ROM part 24 is written to the zone 26 of the part 25 before the disk 20 is used. Then the information on the part 24 and the part 25 are read based on the directory information on the part 25. Thus the directory information are collected in a single area and therefore the information retrieving time is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical disk recording/reproducing device and an optical disk, and in particular, a read-only disk (referred to as a ROM disk) compatible with the above-mentioned disk on a recordable disk.
The present invention relates to a recording format of an optical disk called a partial ROM disk and a recording/reproducing apparatus using the partial/I/ROM disk.

Conventional recordable optical discs have recording tracks, and when information signals are recorded, they are recorded on the recording tracks. A ROM disk compatible with this disk has unevenness signals called pits recorded on the disk from the beginning.

A partial ROM disk has, on one optical disk, a recordable section having a track on which information signals can be recorded and reproduced, and a ROM section in which information signals are recorded in the form of pits.

Conventional partial ROM disks have a function of displaying the ROM portion and the recordable portion in advance.

(For example, see Japanese Patent Application Laid-Open No. 60-237682.) Problems to be Solved by the Invention When recording and reproducing information signals on an optical disk, the address where the information signal is recorded and the contents of the information signal must be stored in a specified track (directory). The ability to record to a DVD player is required. (This is called the directory function.) The ROM section is
Concave and convex pits representing information signals are provided together with the directory information signal pits.

On the other hand, regarding the recordable portion, when the user writes data to the recordable portion of the optical disc, the directory data must also be recorded in a location other than the directory rack of the ROM portion.

Therefore, the directory racks are distributed in at least two locations, which poses a problem in that it takes a long time to read the racks for reading out the target information signal.

Also, the directory recording format is Partial R.
It depends on the O8 (operating system) of the host computer combined with the OM disk recording/playback device.
If the type of O8 is different, it will not be possible to read the data in the directory.

By the way, since the information signals in the ROM section of the partial ROM disk are recorded in uneven pits, manufacturing many types of partial vROM disks for O8 has many problems, including high costs.

Means for Solving the Problems In order to solve the above problems, in a partial ROM disk and a recording/playback device for a partial ROM disk of the present invention, a directory band is provided in the recordable portion of the partial ROM disk, and a partial ROM disk is used. First, the directory of the I'lOM section is transferred to the directory band of the recordable section, and thereafter, the directory information of the recordable section is used to read out the information of the ROM section and the information of the recordable section.

Furthermore, at this time, the format of the directory transferred to the recordable area is set to a format that matches the O5 of the host computer, so there is no need to format the format of the partial ROM disk.
It becomes possible to keep the cost of the partial ROM disk low.

Effects As described above, since the directory information is gathered in one place, the time to search for information is shortened.

Furthermore, before using the partial ROM disk, the directory information is converted into a directory that conforms to the format required by the O8 of the host computer, so only one type of partial ROM disk can be used.

Embodiment FIG. 1 shows a block diagram of a recording/reproducing apparatus according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes an optical disk whose rotation is controlled by a motor 2. As shown in FIG. 3 is an optical head for recording and reproducing information signals on the optical disk 1; 4 is a recording and reproducing controller; 6 is a servo processor for controlling the optical head 3; 6 is a control device for the motor 2; 7 is the reference numeral 1 to 6 above. A CPU 8 is a bus that connects the CPU 7 and the drive interface 9 for controlling the operation of the recording/reproducing apparatus composed of the elements shown.

Here, the drive unit is constituted by elements indicated by numerals 1 to 8.

Reference numeral 9 denotes a drive interface for connection with a controller block that processes information signals, which will be described below. 1o is a first error correction processor (first
XCC), 11 is a buffer memory, 12 is a second error correction processor (2nd (DRCO)), 13H system controller, first X0C1o, buffer memory 1
1. Control the second xcc12.

Reference numeral 16 denotes a signal line for inputting and outputting signals between blocks indicated by reference numerals 10 to 13. Reference numeral 14 is an interface for connecting to the host computer 16, such as a 5C8I.

Note that a portion constituted by blocks indicated by reference numerals 10 to 14 is referred to as a controller section.

Next, the operation of the block diagram shown in FIG. 1 will be explained using FIG. 2.

In FIG. 2, reference numeral 20 denotes a partial ROM disk, which is provided with an uneven signal i called a bit (referred to as a 10M section 24) and a recordable track (referred to as a recordable section 25).

The control track 21 has recorded therein data indicating the configuration of the HARASHIAL ROM disk 20, and includes a first directory track 23, a first replacement track 22.1
The positions (addresses) of the 0M section 24, the recordable section 26, the second directory track 26, and the second replacement track 27 on the disc can be detected by reading the control track 21.

A first directory track 23 and a first replacement track 22 indicate the content of information in the ROM section and a replacement track. R
The spare track 22 of the OM section is used to provide inspection information and correct the error when an uncorrectable error occurs when reading the ROM section.

The second directory rack 26 and the second replacement track 27 are for the data in the recordable section 26, but the directory rack 26 is used to transfer the directory data in the 10M section 24, and also to write and use the directory data in the recordable section 26. When the information signal is recorded, the information signal's value) I
Also used to record J data.

Next, the partial ROM disk 2 is used as the optical disk 1.
The operation when using 0 will be explained.

First, the Hikari Rad 3 reads the control track 21 and sends the configuration of the partial ROM disk 2o to the host computer 16.

Next, the first directory rack 23 is read, and the second
2. Transfer the data to the directory rack 26. The transferred directory data is stored in the host computer's O
The format is compatible with 5. Furthermore, when reading out the control track data 21 and directory track data 23 of the 10M part data 24.21, if the read data contains an error exceeding the specified value, the inspection data written in the replacement track 22 is read out. , second
The error correction is performed again by the ICC 12.

When recording information signals in the recordable section 25, directory data is written in the directory rack 26.

After recording data in the recordable area, read the recorded data and check whether recording was performed correctly (
verification).

The recorded data is inspected, and if an error exceeding a specified value is found, the data is written to the first replacement track 27 again.

The above operation will be explained in detail.

Now, let's think about when Hikari Herad 3 is playing 10M section 24. The reproduced information signal passes through the recording/reproducing circuit 4 and the drive interface 9, is read into the buffer memory 11, and is error-corrected by the first KCCll. If an uncorrectable error is detected here, the optical head 3 goes to read out the spare sector 21 according to a command from the system controller 13, and starts reading out the first spare track 22, which is provided in advance in correspondence with the track of the 10M section 24. The information signal is read out, written into the buffer memory 11, and corrected by the second gCCl 2.

In other words, only when an uncorrectable error occurs, the information signal of the replacement track 22 is read and re-corrected.

Effects of the Invention As described above, according to the recording and reproducing method of the present invention, the information in the directory is collected in one place, so the time required to search for information is shortened.

Furthermore, before using the partial ROM disk, the directory information must be converted to IJ, so the type of the partial ROM disk must be changed to the type of the host computer and the type of O8. Regardless, it can be one type.

As a result, the price of the partial ROM disk can be kept low, and a recording and reproducing device with a high search speed can be provided, and other great effects can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a recording/reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is a partial ROM used in the present invention.
FIG. 2 is a plan view showing the configuration of a disc. 11... Panzer memory, 12... Second error correction processor (second KCC), 2o.
... Partial ROM deinuk, 21 ... Control track, 22 ... Second replacement track, 23 ... Second directory track,
24...ROM section, 25...Recordable section, 26...Second directory rack, 2
7...Second replacement truck. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (2)

[Claims] (1) Recordable area and playback-only R on one optical disc
A recording/reproducing device for a partial ROM disk having an OM section, wherein a directory band is provided in the recordable section of the partial ROM disk, and the directory information of the ROM section is transferred to the directory band of the recordable section before using the partial ROM disk. A recording/reproducing device characterized in that it is configured to read out information in a ROM part and information in a recordable part by using directory information in the recordable part. (2) The recording and reproducing apparatus according to claim 1, wherein the format of the directory transferred to the recordable section is a format compatible with the operating system of the host computer that controls the recording and reproducing apparatus.