JP2000003519A - Optical information recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical information recording device capable of preventing a head cutting of data supplied from a source side in spite of forming an actual pausing area. SOLUTION: This information recording device has records information in a disk 1 by a recording means projected from a pickup 2, and the disk 1 has a first area for recording the traction information of information to be recorded in the disk 1, and a second area for recording the information to be recorded. Means 7, 8, 9 and 10 determine the recording of the information to be recorded in the second area and, when the non-recording of the information to be recorded is determined, control means 3 and 4 position the pickup 2 in a point at least behind an actual pausing area of the second recording area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording apparatus for optically recording information on a disk-shaped recording medium.

[0002]

2. Description of the Related Art In recent years, various write-once recording disks have been proposed, and among them, a compact disk (Compac
t Disc (CD) format (hereinafter referred to as
R-CD).

[0003] That is, a CD defines a lead-in area, a program area, and a lead-out area. In a signal, in addition to information such as a reproduction time and a frame in a subcode data, particularly, a lead-in area Records TOC (Table of Contents) information corresponding to an index of information recorded in the program area.

An R-CD (write-once CD) can also be reproduced by a read-only player by recording such information on a disc in the same manner as the above-mentioned CD.

[0005] However, a pre-groove is formed on the R-CD disc, that the pre-groove is wobbled, that the wobbling frequency is frequency-modulated by the absolute reproduction time, and that the inner circumference is further than the lead-in area. There are some differences in that there are areas called PCA and PMA.

However, in any case, when reproducing a recorded disk, it is necessary that the disk can be reproduced by a conventional CD player.

By the way, in the CD format standard, at least the first two seconds of the program area,
A silent portion (this is called an actual pause area) is provided.

[0008]

When information is recorded on an unrecorded disk on which no information is recorded in the program area, the actual pause area must be formed. Data from the source may be truncated.

To solve this problem, it is sufficient to generate the data on the source side after forming the actual pause area. However, it is not always possible to control the data generation timing on the source side.

SUMMARY OF THE INVENTION The present invention has been made in view of such a situation, and an optical information recording apparatus which does not cause the start of supply data from a source side to be formed despite the formation of an actual pause area. The purpose is to provide.

[0011]

SUMMARY OF THE INVENTION An optical information recording apparatus according to the present invention is an optical information recording apparatus for recording information on a disk by a recording beam emitted from a pickup, wherein the disk is recorded on the disk. A first area for recording traction information of the information to be recorded, and a second area for recording the information to be recorded, and whether or not the information to be recorded is recorded in the second area; When the determination means determines that the information to be recorded is not recorded, the pickup for which a recording operation is required is moved at least behind the actual pause area of the second recording area. And a pickup position control unit that is located at a point.

According to the optical information recording apparatus having such a configuration, when the recording disk is an unrecorded disk, the second
Is moved so as to start recording from a predetermined point behind the start point of the area (program area).

Further, the pickup position control means includes:
When the determination means determines that the information to be recorded is recorded in the second area, the pickup for which a recording operation is required is positioned at a final recording position.

According to this configuration, when information to be recorded is recorded in the second area, the pickup is moved to the final recording position of the recorded information,
Recording of new information is started from the moving position.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an optical information recording apparatus according to the present embodiment.

In FIG. 1, reference numeral 1 denotes a recording disk, which is a recording medium that can be recorded and reproduced by a laser beam emitted from a pickup 2. A well-known material such as a cyanine-based dye thin film is used for the recording layer of the disk 1. As described above, a pre-groove is formed on the recording surface in advance, and the absolute reproduction time (absolute time in pre- -groove: ATIP) is recorded.

The disk 1 is driven to rotate by a spindle motor whose rotation speed is controlled by a spindle servo system (not shown). The spindle motor of the spindle motor controls the rotation speed so that the wobbling frequency becomes a predetermined frequency. In the case of a recorded disk, the rotation speed is controlled so that the reproduction clock has a constant frequency. To control.

The big-up 2 is a focus control unit 3
The movement in the direction perpendicular to the drawing is controlled so that the beam is accurately converged on the disk, and the movement in the disk radial direction is controlled by the tracking control means 4 so that the beam follows the track on the disk.

The signal read from the pickup 2 is
The subcode is extracted by the subcode reading means 9. As described above, the subcode data includes data indicating the reproduction time of the information recorded on the disk 1, and if the disk is a recorded disk, use the subcode to select a target address. can do.

On the other hand, if the disc 1 is an unrecorded disc, since the subcode cannot be used, the absolute time on the disc is obtained using ATIP as track information.

That is, from the relationship that the track is wobbled, the waveform of the tracking error signal includes a wobbling frequency component, and the frequency is modulated to represent the absolute time. Therefore, the tracking error signal from the tracking control
By supplying the signal to the P signal reading means 10, the absolute time can be detected.

Reference numeral 7 denotes a recording state detecting means for determining whether the disk is a recorded disk or an unrecorded disk, the principle of which will be described later.

A controller 5 controls the recording operation, and controls the operation of the entire apparatus.

Reference numeral 6 denotes a recording signal generating means, which performs an encoding process for recording source data (not shown) on a disc;
The light is modulated, and is led to the pickup 2 as a recording signal.

Reference numeral 8 denotes a search means.
Is simply abbreviated as a transfer means for transferring in a desired mode in the radial direction, and a search operation is instructed by the controller 5 and the recording state detection means 7. The search means 8 is supplied with subcode data and ATIP data in order to know the current position.

Next, an example of the operation of the optical information recording apparatus having the above configuration when recording information on the disk 1 will be described.

First, when the disk 1 is loaded, it is first determined whether the disk is a recorded disk or a last recorded disk. This is because if the disc is a recorded disc, new data must be recorded in the program area after the last recording position. For this purpose, the recording state detection means 7 gives a search operation command to the search means 8 and instructs the search means 8 to search the PMA area. The PMA area is an area for recording a recording history of information being added, and if the disc has information once added to the program area, the history is recorded in the PMA area.

Accordingly, since the recording state detecting means 7 can read the subcode in the PMA area, it is possible to determine whether the disk is a recorded disk or an unrecorded disk based on whether the subcode can be read.

If it is determined that the recorded disk is loaded, the final recording position can be determined from the data in the PMA area, and the recording state detecting means 7 gives a search command to position the pickup 2 at the final recording position. The recording preparation operation is completed.

FIG. 2A shows the relative relationship between the disk 1 and the pickup 2 accompanying the above operation.
It is understood that the disc 1 has a PMA area, a lead-in area, and a program area from the inner circumference to the outer circumference, and the inner circumference position of the information recording area is already recorded (hatched portion in the drawing). Therefore, the pickup is located next to the recorded area.

On the other hand, if it is determined that an unrecorded disk has been mounted, the recording state detecting means 7 immediately instructs the searching means 8 to search, for example, the position of 0: 02: 1 frame. This is because the actual pause area is specified to be 2 seconds or more.
What is necessary is just to select an appropriate search position for seconds or more. The search means 8 uses the ATIP data to search while driving the tracking control means 4 so that the pickup 2 is located at this position. In this state, the recording preparation operation is completed, and the state becomes the standby state.

FIG. 2B shows the position of the pickup 2 when an unrecorded disk is loaded, and it can be seen that the position of the pickup 2 is located behind the start point of the program area. .

That is, the recording operation can be started immediately by directly positioning the pickup 2 at the end point of the actual pause area without recording a silent signal for taking the actual pause area. is there.

FIG. 3 is a flowchart for explaining the above-mentioned series of operations.

First, when it is detected in step S1 that a disk has been loaded, a process of reading the recording state of the disk is performed in step S2, and it is determined in step S3 whether there is a recording operation request. If the recording operation is not requested, the process returns to step S1, and if the recording operation is requested, in step S4, it is determined whether the disc is an unrecorded disc.

If the disc is a recorded disc, the last recording position is searched (step S5). If the disc is the last recorded disc, 0 minutes, 2 seconds and 1 frame are searched in step S6. Thereafter, the recording operation is started for the first time in step S7.

FIG. 4 is a flowchart showing details of the disk state detecting process (step S2) in the flowchart of FIG.

First, in step S21, a PMA area located on the inner periphery of the lead-in area is searched, and it is determined in step S22 whether data has already been recorded there. The fact that data has already been recorded in the PMA area
Since this means that the disc is a recorded disc, the data of the PMA area which is the recording history up to that point is read in step S23, and the unrecorded flag is cleared in step S24.

On the other hand, if it is determined in step S22 that the disc is an unrecorded disc, an unrecorded flag is set in step S25.

In step S4 in FIG. 3, it is possible to easily determine whether the disc is an unrecorded disc or a recorded disc by the presence or absence of the unrecorded flag.

Writing to the program area is performed based on the above steps. When the contents to be recorded on the disc are determined, address information such as the start time of each track is recorded in the lead-in area using data or the like recorded in the PMA at this time, and then silence information is recorded in the actual pause area. Record.

In this manner, a lead-in area, an actual pause area, and a program area are present on the disk 1 on which the recorded contents have been determined.

[0043]

As described above, according to the optical information recording apparatus of the present invention, the means for judging whether or not the program area on the recording disc is unrecorded, and the program for picking up when the disc is unrecorded are programmed. Since the position control means for controlling the position to be located at a predetermined position behind the start point of the area is provided, it is not necessary to record the actual Bose area as silent data before recording the source information, so that the recording of the source data can be performed earlier. You can start.

When information to be recorded is recorded in the program area, the pickup is moved to the last recording position of the recorded information, and new information is quickly recorded from the moved position. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an optical information recording apparatus according to an embodiment.

FIG. 2 is a diagram showing a relative positional relationship between a disk and a pickup.

FIG. 3 is a flowchart showing an operation example of the optical information recording apparatus.

FIG. 4 is a flowchart further illustrating an operation example of the optical information recording apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Disc 2 ... Pickup 5 ... Controller 7 ... Recording state detection means 8 ... Search means 9 ... Subcode reading means 10 ... ATIP reading means

Claims (5)

[Claims] 1. An optical information recording apparatus for recording information on a disk by a recording beam emitted from a pickup, wherein the disk has a first area for recording traction information of information to be recorded on the disk, A second area for recording the information to be recorded, a determining unit for determining whether or not the information to be recorded is recorded in the second area; and And pickup position control means for positioning the pickup requiring a recording operation at least at a point behind the actual pause area in the second recording area when judging that the information to be recorded is not recorded. Optical information recording device. 2. The pickup position control means, when the determination means determines that the information to be recorded is recorded in the second area, moves the pickup requiring a recording operation to a final recording position. The optical information recording apparatus according to claim 1, wherein the optical information recording apparatus is positioned. 3. The pickup position control means, after recording the information to be recorded on the disk by the pickup, records silent information in the actual pause area. 4. The optical information recording device according to item 1. 4. The information processing apparatus according to claim 1, wherein the determining unit determines that the information to be recorded is not recorded based on information of an area where a recording state in the second area is recorded. Item 4. The optical information recording device according to any one of Items 1 to 3. 5. The optical information according to claim 1, wherein the disc conforms to a compact disc format, and the traction information is TOC information. Recording device.