JPH05120683A - Method for recording optical disk - Google Patents

Abstract

PURPOSE:To immediately restart recording after stopping the recording and to record a recording information on an optical disk without the backup of a battery. CONSTITUTION:A motor 5 rotates a disk 1, generating a focusing error signal FF and a tracking error signal TE from a photodetector of a pickup 6. A servo circuit 14 causes focusing coil current FS from the signal FS. The flows through a tracking coil, and the laser point traces the pre-group of waveform, and the focus of the light point is aligned to the signal surface of a disk. A decoder 7 demodulates a wobble signal to an ATIP signal and a microcomputer 15 recognizes the location of the light point on the disk. A motor 8 is driven by the DC component current LM of the signal TE to be fed back to the servo circuit 14. The motor 5 is controlled based on the wobble signal as a reference to perform the constant speed control. The current is supplied from an LD driver 9 to the pickup 6, which is demodulated by an encoder 11 to make a bit string. The microcomputer 15 controls the entire system. At repeating the recording, the recording can be resumed immediately because information is stored in the memory by pressing a keyboard 16 and not recorded on the disk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording method for an optical disk such as a WO (write-once) disk or a magneto-optical disk, and particularly to record recording information such as recording start time and recording end time of each track on the optical disk. Regarding the method.

[0002]

2. Description of the Related Art When recording a song or the like on a WO disk or a magneto-optical disk, a track number is provided for each recording, and recording information such as the recording start time and recording end time of each track number is recorded on the disk. The data corresponding to the TOC (table of contents) of the recorded CD is created.

Conventionally, in order to perform such recording, the recording information recorded at that time is written to the disc each time the recording end key is pressed. According to such a method, it is inconvenient that the next recording cannot be immediately started because it takes time to write the recording information after the recording is stopped.

In order to avoid such inconvenience, when the recording is stopped, the record information is not written in the disc but is stored in the memory first, and the record information stored in the memory is stored in the disc when the disc is taken out from the recording device. There was also a way to write. According to this method, if the power supply is turned off before the disk is taken out, the recorded information stored in the memory is lost, so that the memory needs to be backed up by a battery, resulting in a high cost.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to start recording immediately after recording is stopped without using a battery backup and at each time. An object of the present invention is to provide an optical disc recording method capable of recording the above recording information on a disc.

[0006]

According to another aspect of the present invention, there is provided an optical disc recording method, wherein recording information for each track is recorded in a program memory area of the optical disc. When pressed, the recording of the optical disk is stopped and the recording information of the track being recorded at that time is stored in the memory of the optical disk recording device. When the second recording stop key is pressed during recording of the optical disk, the optical disk is pressed. The recording information of the track being recorded at that time and the recording information for each track which has been stored in the memory of the optical disk recording device and has not yet been recorded on the optical disk are recorded in the program memory area of the optical disk. To do.

[0007]

During recording on the optical disk, the recording start time is stored in the memory of the optical disk recording apparatus, and the current recording location is read from the absolute time previously recorded on the track of the optical disk. By pressing the first recording stop key, the recording start time and the final absolute time, that is, the recording end time are instantaneously stored in the memory of the optical disk recording apparatus as the recording information of the track.

As described above, the recording information of each track stored each time the first recording stop key is pressed is the optical disk together with the recording information of the track being recorded when the second recording stop key is pressed. Recorded in.

When the first recording stop key is pressed, the recording information is not recorded on the optical disc, so that the recording of the next track can be started immediately.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a WO (Write On) used for implementing the present invention.
ce) is a block diagram showing a configuration of a disk device. In the figure, reference numeral 1 is a WO disk, which is placed on a tray 2, is moved above the spindle motor 5 by the rotation of a loading motor 3 controlled by a microcomputer 15, and is a turn fixed to a rotation shaft of the spindle motor 5. Clamped on the table.

The spindle motor 5 rotates the WO disk 1, and the focus error signal (FE) and the tracking error signal (TE) are input to the servo circuit 14 from the light receiving element of the optical pickup 6. The servo circuit 14 receives the tracking coil supply current (T
S) is generated and the wobble signal is extracted.

Further, the servo circuit 14 generates a focusing coil supply current (FS) from the focus error signal. The laser spot tracks the pre-groove of the waveform when the current is passed through the tracking coil of the actuator of the optical pickup 6, and the focus of the laser spot is focused on the signal surface of the WO disk by the current passed through the focusing coil.

A wobble signal having the same period as the waveform of the pre-groove is input to the ATIP decoder 7 and ATIP.
The (absolute time) signal is demodulated, and the microcomputer 1
5 is output. With this ATIP, the microcomputer 15 recognizes the position of the laser spot on the WO disk.

A linear motor 8 sends the optical pickup 6 in the radial direction of the WO disk. The linear motor 8 is driven by a current (LM) generated from the direct current component of the tracking error signal, and has a sensor coil for speed detection. SC) is fed back to the servo circuit 14.

The wobble signal also indicates the linear velocity of the WO disk, and the servo circuit 1 is based on this signal.
Reference numeral 4 controls the current of the spindle motor 5, and CLV (constant linear velocity) control is performed.

The laser diode of the optical pickup 6 is supplied with a current by the laser diode driver 9, and the current is modulated by the output of the EFM encoder 11, and the laser light emitted from the laser diode corresponds to the EFM signal on the WO disk. Form a pit train.

The EFM encoder 11 has an input terminal 10
The audio digital input (D) or the analog input R channel (R) and L channel (L) are converted by the AD converter (A / D) by selecting the digital input by the switch and input to be modulated into the EFM signal. It At that time, the signal input from the microcomputer 15 is incorporated into the subcode of the EFM signal. That EFM
The signal is laser diode driver 9 as described above
Modulates the output current of.

The microcomputer 15 has a built-in ROM and RAM and controls the entire apparatus. In addition, a signal is input from the keyboard 16 and further a signal is output to the display 17 to display the operating state of the device. The keyboard 16 includes a pause key which is a first recording stop key and a stop key which is a second recording stop key.

Although the recording operation of the WO disc has been described above, when the signal recorded on the WO disc is reproduced, the same operation as the CD player is performed. At that time, the laser diode driver 9 outputs a constant current,
The light receiving element of the optical pickup 6 obtains an RF signal, a tracking error signal (TE) and a focus error signal (FE) from the reflected light from the pit train.

The RF signal is input to the EFM decoder 12, and the audio digital signal and subcode are demodulated. The audio digital signal is amplified and waveform-shaped by the amplification / waveform shaping circuit (DO), output from the D terminal of the output terminal 13, and processed by the digital filter (DF).
Converted to analog signal by DA converter (D / A),
Further, it is amplified by the amplifier (AO) and output to the analog terminals R and L of the output terminal 13. Further, the demodulated subcode is input to the microcomputer 15.

Next, referring to FIGS. 2 and 3, the above WO
The routine when the disk device stops recording will be described. First, in step S1, when the recording key is pressed, the process proceeds to step S2, the previous recording end position is searched, and the process proceeds to step S3. In step S3, recording is performed by increasing the laser power. Next, step S
4, the process determines whether or not there is a key input. If there is a key input, the process proceeds to step S5, and if there is no key input, the process proceeds to step S8.

At step S8, step S4 is repeated after other processing such as interruption is performed. During this period, recording on the WO disc is continued.

In step S5, it is determined whether or not the pressed key is the stop key. If the pressed key is the stop key, the process proceeds to step S9, and if not, step S6.
Move to. In step S6, it is determined whether or not the pressed key is the pause key. If the pressed key is the pause key, the process proceeds to step S11, and if not, the process proceeds to step S7.

If it is determined in step S7 whether the pressed key is a key other than the stop key and the pause key, the process proceeds to step S18, and if not, the process proceeds to step S8.

In step S9, the laser power is reduced and the process proceeds to step S10. In step S10, the recording information of the track number recorded this time, the recording information of the previous track number and the additional recording position information stored in the memory are written in the program memory area of the disc, and then the apparatus is stopped.

In step S11, the laser power is reduced and the process proceeds to step S12. In step S12, the recording information of the track number recorded this time and the additional recording position information are stored in the memory to set the pause state, and the process proceeds to step S13. In step S13, it is determined whether or not there is a key input. If there is a key input, the process proceeds to step S14, and if there is no key input, the pause state of step S12 is continued.

In step S14, it is determined whether or not the pressed key is a pause key. If the key is a pause key, the process proceeds to step S2, and if not, step S15.
Move to. Each time the pause key is pressed, the pause operation and the pause release operation are alternately repeated.

In step S15, it is determined whether or not the pressed key is a stop key. If the key is a stop key, the process proceeds to step S9, and if not, the step S15.
Move to 16. In step S16, it is determined whether or not the pressed key is a key other than the stop key and the pause key. If yes, the process proceeds to step S17, and if not, the process proceeds to step S12 and the pause state is continued. ..

In step S17, after the other keys are processed, the process proceeds to step S12 and the pause state is repeated. In step S18, the process for another key is performed, and then the process proceeds to step S4.

Thus, each time the stop key is pressed, the record information of the track number of the program area recorded up to that point is recorded in the program memory area on the inner circumference side of the disc. When all the recording on the disc is completed, a recording end process is performed and a TOC (similar to a CD) is added to the lead-in adjacent to the inner circumference side of the program area based on the record information of each track number recorded in the program memory area. (Table of contents) is recorded, the lead-out is recorded on the outer peripheral side of the program area, and a recorded disc similar to a CD is produced.

Although the embodiment is configured as described above, the invention is not limited to this. For example, a TOC such as a magneto-optical disk is used.
The present invention can be applied to a disc that does not have a disc.

[0032]

According to the optical disk recording method of the present invention, when the recording is repeated, the first recording stop key is pressed, the recording is temporarily stopped, and the recording information is only recorded in the memory and recorded on the disk. Since no information is recorded, the next recording can be started immediately.

When the second recording stop key is pressed, all the record information including the record information stored in the memory is recorded on the disc, so that the record information is not lost even when the power is turned off.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a WO disk device used for implementing the present invention.

FIG. 2 is a flowchart showing a part of a routine when recording is stopped in the WO disk device.

FIG. 3 is a flowchart showing a portion of a routine when recording is stopped in the WO disc device.

[Explanation of symbols]

 1 CD-WO Disc 2 Tray 3 Loading Motor 5 Spindle Motor 6 Optical Pickup 7 ATIP Decoder 8 Linear Motor 9 Laser Diode Driver 10 Input Terminal 11 EFM Encoder 12 EFM Decoder 13 Output Terminal 14 Servo Circuit 15 Microcomputer

Claims (1)

[Claims] 1. A method for recording an optical disc, wherein recording information for each track is recorded in a program memory area of the optical disc, when the first recording stop key is pressed during recording of the optical disc, the recording of the optical disc is stopped. At this time, the recording information of the track being recorded is stored in the memory of the optical disk recording device, and when the second recording stop key is pressed during recording of the optical disk, the recording of the optical disk is stopped and the track being recorded at that time is recorded. A recording method for an optical disc, comprising recording the recording information and the recording information for each track, which is stored in the memory of the optical disc recording device and has not yet been recorded on the optical disc, in a program memory area of the optical disc.