JP2003132545A - Optical disc drive and writing method for optical disc writing medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical disc drive that can determine the writing speed after the user recognizes the relations between the writing speed and its quality. SOLUTION: This optical disc drive is a device to record information on the information tracks, and stores the recording quality and recording speed in advance for each kind of optical disks 1. It reads the information about the maker's names and model kinds from the optical disc recording medium 1 to obtain the recording characteristics for each kind and to transmits them to the host. Since the writer tool on the host displays the writing speed and quality of the optical disc 1 on its display 30, the user can recognize the relations between the writing speed and its quality to determine the writing speed for high quality writing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device for recording / reproducing information on a recordable optical disk and a method for writing on an optical disk recording medium.

[0002]

2. Description of the Related Art As an optical disc recording medium, a write-once type optical disc (CD-R, CD) capable of writing data only once.
There is a rewritable optical disk (CD-RW (Compact Disk-ReWritable)) that can rewrite data.

A drive device for reading / writing data from / to such an optical disc recording medium records various data in a track format in a user data area called a program area on the recording medium, and reproduces the recorded data. Such a drive device generally has a power calibration function for detecting the optimum power level of the recording laser light, and when recording data, an OP
A power calibration operation called C (Optimum Power Control) is performed.

On the recording surface of the recording medium, a TOC (Table of C) is provided on the inner peripheral side of a data area for storing various data.
A lead-in area in which ontents) information is recorded is provided, and in order to detect the optimum power of the laser beam prior to the recording operation, the O-shaped area is provided further inside the lead-in area.
PCA area (Power Calibrator) for test recording in PC operation
bration Area) is provided. The PCA area is composed of a test area and a count area, the test area is composed of a plurality of partitions, and each partition is composed of a plurality of frames.

Further, on the recording medium, as one of the TOC information, A indicating an absolute time formed of an FM-modulated frequency signal is shown.
TIP information (Absolute Time In Pre-groove) is recorded, and in this ATIP information, the applicable recording speed of the recording medium and the optimum laser power are recorded in advance by the manufacturer of the recording medium.

[0006]

With the widespread use of optical discs compatible with high-speed recording, the recording speed setting is standard double speed, double speed, and 4 when a user performs recording with writing software.
The number of speeds is increasing, such as double speed, 8 times speed, 10 times speed, 12 times speed, 16 times speed, 20 times speed, etc., and selection becomes difficult.

The user generally selects the highest recording speed in order to reduce the working time, but the user who attaches importance to recording quality often selects the lowest recording speed. However, it is difficult to say that low-speed recording is high-quality recording, and the speed with which good recording quality differs depending on the type of recording medium and the performance of the drive. There is a long-felt need for a good method that satisfies both trade-offs in performance improvement.

[0008] Optical disk recording medium manufacturers are constantly developing to improve recording speed and recording performance.
New optical disc recording media are being put on the market at any time. In addition, some manufacturers are newly entering the optical disk recording medium business. When these unknown recording media are inserted into the drive device, the user cannot know the recording quality with respect to the recording speed.

In order to solve this problem, Japanese Unexamined Patent Publication No. 200
In the "optical disc information recording device" of Japanese Patent Application Laid-Open No. 0-163746, the type of the maker of the disc is determined by reading the information recorded on the optical disc, and the optimum recording stored in the ROM corresponding to the type. The speed information is read, and the user is allowed to select whether or not to perform automatic recording at the optimum recording speed. When automatic recording is selected, writing at the optimum recording speed is started.

However, Japanese Patent Laid-Open No. 2000-16374.
In the technique of Japanese Patent Publication No. 6, only the information about the optimum recording speed is shown to the user, and the recording quality at other recording speeds is not shown to the user. Therefore, since there is no index for recording quality, the user cannot write data at a recording speed other than the optimum quality.

The present invention has been made in view of the above-mentioned circumstances, and an optical disk device and an optical disk recording in which the user can set the recording speed after knowing the relationship between the writing speed of the recording medium and the recording quality. An object is to provide a method for writing to a medium.

[0012]

In order to solve the above-mentioned problems, an optical disk device according to claim 1 of the present invention is an optical disk device for recording on an information track. A recording performance recording means for storing the recording quality with respect to the speed, a type reading means for reading information indicating a type such as a manufacturer name or a model from the optical disc recording medium, and a recording performance corresponding to the type from the recording performance recording means. It is characterized by having a recording performance reading means for reading and a means for transmitting the read recording performance to a host. In addition, claim 2 of the present invention
Is a rewritable memory, and the rewriting of this memory can update the recording performance for various optical disk recording media.

According to a third aspect of the present invention, there is provided a method for writing data on an optical disc recording medium, wherein a user writes data using the optical disc device according to the first or second aspect. When the optical disk recording medium is mounted on the optical disk device, the type of the recording medium is determined, the speed at which the recording medium can be recorded and the recording quality thereof are read, the recording speed and the recording quality are displayed, and the displayed recording is performed. It is characterized in that data is written to a recording medium at a recording speed selected by the user with reference to the quality.

Therefore, when the optical disc recording medium is inserted into the optical disc device, the writing speed and the recording quality of the optical disc recording medium are displayed on the screen of the host, so that the user knows the relation between the writing speed and the recording quality. The recording speed can be set with, and writing with good recording quality becomes possible. Further, by updating the firmware of the optical disc device, the user can set the recording speed even for a newly released optical disc recording medium, and thus writing with good recording quality can be performed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The optical disk device of the present embodiment is a CD-R / RW (CD-Recordabl
Although the description will be made assuming that information is recorded / reproduced in e / Rewritable), it can be applied to other optical disk devices.

FIG. 1 is a schematic configuration diagram of an optical disk device showing an embodiment of the present invention. In FIG. 1, the present optical disk device 20 controls a spindle motor 2 by a motor driver 3 and a servo means 4 so that the optical disk recording medium 1 rotates in a ZCLV system or a CLV system.

The optical pickup 5 emits a laser beam from a laser light source such as a laser diode, focuses the laser beam on the recording surface of the optical disc recording medium 1 by an objective lens, and uses focus servo and track servo servo means. By controlling the actuator, the data recorded on the optical disc recording medium 1 is reproduced to obtain a reproduction signal, or the data is recorded on the optical disc recording medium 1.

When the data is reproduced by the optical disk device 20, the reproduction signal obtained by the optical pickup 5 is amplified by the read amplifier 6 and binarized, and then the CD decoder 7 performs deinterleaving and error correction processing. Is done.
The data from the CD decoder 7 is subjected to error correction processing by the CD-ROM decoder 8 to improve the reliability of the data.

The data from the CD-ROM decoder 8 is
Once the buffer RAM 1 is set by the buffer manager 9.
0 is stored in the sector data, and when it is prepared as sector data, it is transferred all at once to the host (host computer, for example, personal computer) 30 via the host interface (host I / F) 11. When the data is music data, the data from the CD decoder 7 is converted into an analog audio signal by a D / A converter (not shown) and taken out.

On the other hand, when data is recorded by the optical disk device 20, the data sent from the host 30 via the host I / F 11 is once accumulated in the buffer RAM 10 by the buffer manager 9, and then the data recording is started. . Before starting data recording, OPC is performed in a trial writing area called a PCA area of the optical disc recording medium 1.
Is performed to obtain the optimum recording power.

Before starting the data recording, the laser beam spot on the optical disc recording medium 1 is positioned at the writing start point. The writing start position is a wobble signal which is pre-marked on the optical disc recording medium 1 by meandering of tracks (pre-groove) on the optical disc recording medium A.
It is determined by the TIP signal. The ATIP signal is time information indicating an absolute address on the optical disc recording medium 1,
The ATIP decoder 12 extracts the data from the read amplifier 6, detects an ATIP signal error, and measures a detection error rate of the ATIP signal.

Further, the sync signal generated by the ATIP decoder 12 is input to the CD encoder 13 so that the data can be written at an accurate position. When recording data, data is read from the buffer RAM 10,
This data is recorded on the optical disk recording medium 1 via the laser control circuit 15 and the optical pickup 5 after adding an error correction code and interleaving by the CD-ROM encoder 14 and the CD encoder 13. C
The PU 16 controls each unit of the optical disc device 20 to read / write data from / in the memory 17. Non-volatile memory 18
The table stores a table (recording performance recording means) showing the relationship between the recording speed and the recording performance corresponding to the manufacturer and model of the optical disc recording medium 1, and a program. This program reads the lead-in area when the optical disc recording medium is inserted into the drive, reads various information of the optical disc recording medium, and discriminates the type (maker name and model name) of the recording medium (type reading means). The relationship between the recording speed and the recording quality corresponding to the determined type is read from the table held in the nonvolatile memory 18 (recording performance reading means), and the recording performance data is transmitted at the request of the host 30. (Means for sending).

The optical disk device 20 includes a host I / F 11
It is controlled by the writer tool of the host 30 such as a PC via the. FIG. 2 is a flow chart for explaining the processing when writing data to the optical disc recording medium 1 by this writer tool. When the optical disc recording medium 1 is inserted into the drive device of the optical disc device 20, the optical disc device 20 reads the lead-in area, reads various information of the optical disc recording medium 1, and records the type of recording medium (maker name, model name, etc.). Is determined (step S1).

The relationship between the recording speed and the recording quality corresponding to the determined type is read from the table held in the non-volatile memory 18 (step S2). These data (relationship between recording speed and recording quality) are recorded in the non-volatile memory 18 for each type of recording medium by performing recording performance evaluation by experiments in advance when the drive device is designed. The recording performance is represented by five levels of 1, 2, 3, 4, and 5 with 1 being the evaluation that the recording performance is the best.

Further, with respect to the optical disk recording medium 1 released after shipping the optical disk device 20, the maker of the optical disk device 20 evaluates the recordable speed and the recording quality, and newly creates recording performance data. The maker of the optical disk device 20 distributes the existing recording performance data and the newly created recording performance data as firmware data of the non-volatile memory 18 of the optical disk device 20. For example, by using the Internet, the firmware corresponding to the new optical disc recording medium is posted as download data on the user support homepage and distributed, or
From user support to flexible disks and CD-RO
It is also possible to distribute using a recording medium such as M.
The user stores the distributed recording performance data in the nonvolatile memory 18 of the optical disc device 20 as firmware data.

On the other hand, the writer tool on the host 30 is
When it is confirmed that the recording medium is inserted in the optical disk device 20, a vendor-unique mode sense command or mode select command is issued to obtain the recordable speed and recording performance information of the disk and select the recording speed for the user. A dialog box (see FIG. 3) is displayed (step S3). In the display example of the dialog box of FIG. 3, the selectable recording speeds are 4 ×, 8 ×, 12 ×,
Four recording speeds of 16 times speed are displayed. 8 here
It is displayed that the recording quality of double speed and 12 times speed is the best in rank 1, 16 times speed is rank 2, and 4 times speed is rank 4.

The user sees this display information and selects one of the recording speed selection switches shown below the display information to select "OK".
Press the button (step S4). In the case of FIG. 3, when the user wants to record the data with the recording quality, the 12 × speed is selected, and when the both of the recording speed and the recording quality are aimed at, the 16 × speed is selected. The writer tool transmits the recording speed and data designated by the user to the optical disc device 20, and the optical disc device 20 transmits the data to the host I / F.
Optical disc recording medium 1 at the recording speed received via 11
Data is written in (step S5).

[0028]

As described above, according to the present invention, when the optical disk recording medium is inserted into the optical disk device,
Since the writing speed and recording quality of this optical disk recording medium are displayed on the screen on the host, the user can set the recording speed after knowing the relationship between the writing speed and the recording quality, and writing with good recording quality becomes possible. . Further, by updating the firmware of the optical disk device, the user can set the recording speed even for a newly released optical disk recording medium, so that writing with good recording quality becomes possible.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an optical disk device showing an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a process when writing data to an optical disc recording medium by a writer tool.

FIG. 3 is a display example of a recording speed selection dialog box.

[Explanation of symbols]

1 ... Optical disk recording medium, 2 ... Spindle motor, 3 ...
Motor driver, 4 ... Servo means, 5 ... Optical pickup, 6 ... Read amplifier, 7 ... CD decoder, 8 ... CD-
ROM decoder, 9 ... Buffer manager, 10 ... Buffer RAM, 11 ... Host I / F, 12 ... ATIP decoder, 13 ... CD encoder, 14 ... CD-ROM encoder, 15 ... Laser control circuit, 16 ... CP
U, 17 ... Memory, 18 ... Non-volatile memory, 20 ... Optical disk device, 30 ... Host (personal computer).

Claims (3)

[Claims] 1. An optical disk device for recording on an information track, a recording performance recording means for storing recording quality for each recording speed in advance for each type of optical disk recording medium, and a manufacturer name, model, etc. from the optical disk recording medium. And a recording performance reading unit that reads out recording performance corresponding to the type from the recording performance recording unit, and a unit that transmits the read recording performance to the host. Optical disk device. 2. The optical disk device according to claim 1, wherein the recording performance recording means is a rewritable memory, and the recording performance for various optical disk recording media can be updated by rewriting the memory. apparatus. 3. A method of writing data on an optical disc recording medium, wherein a user writes data using the optical disc device according to claim 1 or 2, when the optical disc recording medium is mounted on the optical disc device, the recording medium The type is determined, the recordable speed and its recording quality are read, the recording speed and the recording quality are displayed, and the data is recorded at the recording speed selected by the user with reference to the displayed recording quality. A method for writing to an optical disk recording medium, characterized in that