JPH04247328A - Optical information recorder - Google Patents

Abstract

PURPOSE:To allow the recording of pause information as the delimitation between program informations by operating the recording operation of the program information according to a recording stop command and recording the pause information after this recording position. CONSTITUTION:The recording of the pause information is executed by stopping the recording operation of the program information when the recording stop command is generated. The recording operation of the pause information controls the content of the pause information outputted from a pause information generating circuit 20 according to the control signal from a recording operation control circuit 5. The track number to be recorded is increased by 1 and the index number is set at 00. The reproduction time within the track number is decreased by each one frame. The recording operation of the pause information is stopped when the above-mentioned reproduction time attains 00 minute 00 second 00 frame. The pause information is recorded and a pause area is formed at every ending of the recording of the program information for one track number.

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 write-once type recording disk.

0002

BACKGROUND OF THE INVENTION In recent years, various write-once recording disks have been proposed, and some of them are compliant with the compact disk (CD) format (hereinafter referred to as write-once CD). In other words, a CD has a lead-in area, a program area, and a lead-out area, and the signal includes subcode data that indicates the playback time and frame for each track number (song number). In addition to information such as the program information, TOC information corresponding to an index of program information such as music recorded in the program area is recorded particularly in the lead-in area.

[0003] Write-once CDs also record this information on the disc in the same way as regular CDs.
It is possible to perform the music using a D player. however,
A pre-groove is formed on a write-once CD disc, and this pre-groove is wobbling, the wobbling frequency is frequency-modulated depending on the absolute playback time, and the PCA is further inner than the lead-in area.
(Power Calibration Area), P
There are some differences in that there is an area called MA (Program Memory Area). PCA is a test writing area for adjusting the recording power before actually writing, and PMA is an index of the recording history, that is, the TOC information etc. that should be finally written in the lead-in area and lead-out area. A temporary index information storage area for temporarily recording information,
For example, it has 99 partitioned areas. For example, each time program information for one track number is written to the program area, it is automatically written to the PMA. When the recording to the program area is completed, the user issues a command to write the contents recorded on the PMA into the lead-in area and the lead-out area.

[0004] By the way, the normal CD standard (Compa
ct Disc Digital Audio System
tem Description, commonly known as Red Book)
In this example, a pause area is defined as a delimiter between program information within a program area. Figure 9 shows the program information, track number TNO, and index number INDEX from the inner circumference to the outer circumference of a normal CD.
, reproduction time within track number PTIME, and reproduction absolute time ATIME. Here, Po
In the zone area, the index number is 00, and the playback time within the track number indicates the remaining time of the Bose period. On the other hand, the recordable CD standard (Recordable
Compact Disc Digital System
TEM Description (commonly known as the Orange Book), the pose area is not recorded in the PMA, and there are no restrictions on the method of recording pose information for forming the pose area. Therefore, a recording method has been considered in which pause information is recorded for a certain period of time before the program information is actually recorded when an additional write command for program information is issued.

However, with this recording method, program information is not recorded immediately, so when recording PCM broadcast contents such as satellite broadcasting as program information, it is possible that the recording timing of program information may be missed. There is sex.

[0006]

OBJECTS OF THE INVENTION An object of the present invention is to provide an optical information recording device that can record pause information as a break between program information without missing the recording timing of program information.

[0007]

[Structure of the Invention] The optical information recording device of the first invention of the present application includes a write-once type recording disk that emits an irradiation beam from a pickup.
An optical information recording device that records program information and pause information as a delimiter between the program information using a system, and stops the recording operation of the program information in response to a recording stop command during the recording operation of the program information. a determining means for determining whether the recording operation of the program information has stopped, and a pause after the recording position of the last recorded program information on the recording disk when the determining means determines that the recording operation of the program information has stopped. It is characterized by having a recording means for recording information only for a predetermined period.

[0008] The optical information recording device of the second invention of the present application includes:
This is an optical information recording device that records program information and pause information as a break between the program information on a write-once type recording disk using an irradiation beam from a pickup. A determining means for determining whether any of the operations is in a stopped state, and the determining means determines that the program information recording operation or the recording standby operation is in a stopped state. The present invention is characterized by having a recording means for recording pause information for a predetermined period after the recording position of the last recorded program information on the recording disk.

[0009]

Effect of the Invention In the optical information recording device of the first invention of the present application, the recording operation of program information is stopped in response to a recording stop command during the recording operation of program information,
When it is determined that the recording operation of program information is to be stopped, pause information is recorded for a predetermined period after the recording position of the last recorded program information on the recording disk. Therefore, every time recording of program information is completed, pause information is recorded following the recording end position of the program information, thereby forming a pause area.

In the optical information recording device of the second invention of the present application, when it is determined that both the program information recording operation and the recording standby operation are stopped, the final recording on the recording disk is performed. Pause information is recorded for a predetermined period after the program information recording position. Therefore, pause information is automatically recorded and a pause area is formed when the recording apparatus is simply powered on and no request for program information recording operation or recording standby operation is generated.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The optical information recording apparatus according to the present invention shown in FIG.
This is a write-once CD that can be recorded and played back using a CD. The recording layer of the disc 1 is made of a well-known material such as a cyanine dye thin film, and the recording surface is pre-glued.
Absolute playback time (AT) is formed by wobbling.
IP: Absolute Time InPre-gr
oove) is recorded.

The disk 1 is rotationally driven by a spindle motor 18, and the rotational speed of the spindle motor 18 is controlled by a spindle servo system, which will be described later. The spindle servo controls the rotational speed so that the wobbling frequency is a predetermined frequency, and if it is a recorded disc, it controls the rotational speed so that the reproduction clock is a constant frequency. .

A focus control system 3 controls the movement of the pickup 2 in a direction perpendicular to the drawing so that the beam is accurately focused on the disk, and a tracking control system 4 controls the movement of the pickup 2 so that the beam is focused on a track on the disk. The movement of the disk in the radial direction is controlled to follow. pickup 2
The subcode reading circuit 9 extracts the subcode from the signal read by the subcode reading circuit 9, that is, the RF signal. As mentioned above, the subcode data includes data indicating the playback time of information recorded on the disc, and if it is a recorded disc, this subcode can be used to determine the target address. It can be used for settings etc. The subcode reading circuit 9 includes, for example, an EFM demodulator that demodulates the signal read from the pickup 2, and a decoder that decodes the subcode signal from the demodulated signal.

On the other hand, in the case of an unrecorded disc, the subcode
ATIP is not available as track information.
to get the absolute time on disk. That is, since the track is wobbling, the waveform of the tracking error signal includes a wobbling frequency component, and absolute time is represented by frequency modulating this component. Therefore, the tracking error signal from the tracking control system 4 is supplied to the BPF 11,
The wobbling frequency component band (for example, center frequency 22.05 kHz) in the signal is extracted, and the output signal of the BPF 11 is supplied to the FM demodulator 12 to detect the absolute time (ATIP data). . Also,
The output signal of the BPF 11 is a reference frequency signal (wobbling frequency, for example, 2
2.05kHz) in the comparator circuit 14. The output signal of the comparison circuit 14 is supplied to the drive circuit 15 of the spindle motor 18. These BPF 11, reference frequency signal generation circuit 13, comparator circuit 14, and drive circuit 15 constitute the above-mentioned spindle servo system.

The information reading circuit 16 reads index information from the disk and stores it in a memory 17 such as a RAM. Therefore, the information reading circuit 16 is the FM demodulator 12
and the output of the subcode reading circuit 9. Further, the recording operation control circuit 5 controls the recording operation of the apparatus, and controls the recording signal generation circuit 6 according to data obtained from the information reading circuit 16.

The recording signal generation circuit 6 receives signals from the recording operation control circuit 5 in order to record program information such as music data and subcode data from a program data source (not shown) onto the disk. It includes an encoder that performs encoding processing in accordance with a control signal, and an EFM modulation circuit that performs EFM modulation using program data and the output of the encoder, and outputs the EFM modulated signal to the pickup 2 as a recording signal. A pause information generation circuit 20 that supplies pause information as subcode data is connected to the recording signal generation circuit 6. The content of the pause information output from the pause information generation circuit 20 is controlled according to a control signal from the recording operation control circuit 5.

The search circuit 8 generates a drive signal for the tracking control system 4 to move the pickup 2 in the radial direction in a desired mode, and the search operation is carried out by the recording operation control circuit 5 and Instructions are given from the information reading circuit 16. This search circuit 8 is supplied with subcode data and ATIP data in order to know the current position. The time data adder 19 inputs the subcode data from the subcode reading circuit 9, and adds the playback time within the track number PTIME and the playback absolute time ATIME in the subcode data. The output of the adder 19 is connected to the recording operation control circuit 5, and data indicating the value of the addition result is supplied to the recording operation control circuit 5.

Such recording operation control circuit 5 and search circuit 8
, the information reading circuit 16, the memory 17, the adder 19, and the pause information generating circuit 20 are actually composed of the microcomputer 10.
It is formed by executing a program stored in advance in M (not shown). Next, the operation obtained by executing this program will be explained. It is assumed that a disk is installed in this device. As shown in FIG. 2, first, it is determined whether a disk has just been inserted into the apparatus (step S1). The mounting of the disc is detected optically or mechanically, but since this is already known, the explanation will be omitted. PMA if the disk has just been installed
A recorded information reading routine is processed (step S2). If the disk has already been loaded, the process moves to step S3, which will be described later.

In the PMA recorded information reading routine, a PMA start position is searched for as shown in FIG. 3 (step S21). That is, a search command for a PMA start position is generated in the information reading circuit 16, and in response to this search command, the search circuit 8 sends a jump control signal indicating a predetermined PMA start position to the tracking control system. 4 and a slider-servo system (not shown). PMA
When the search to the start position is completed, it is determined whether index information can be read from the subcode signal of the PMA by the subcode reading circuit 9 (step S22). Index information includes track numbers and starting ATIP data for each track number.
data and end ATIP data. As described above, this PMA is an area for recording the recording history of program information such as songs that are being added, and index information is written every time program information is added to the program area in step S9, which will be described later. In other words, if the disc has program information added to the program area even once,
The history is recorded in the PMA as index information. If the index information can be read, read it and store it in memory 1.
7 (step S23). Then, it is determined whether reading of the index information of the PMA has been completed (step S24), and as long as the index information can be read, step S2
3 is executed. After reading the index information,
The end ATIP data of the maximum track number NMAX read from the PMA is set as the final recording position (step S2
5) Clear the unrecorded flag (step S26). If index information is not recorded, the disc is regarded as an unrecorded disc and an unrecorded flag is set (step S27). The operation according to this PMA recording information reading routine is performed in the information reading circuit 16, and the final recording position data and the unrecorded flag are supplied to the recording operation control circuit 5.

After the PMA recorded information reading routine is completed, it is determined whether a program information recording standby request has occurred (step S3). This request is made using a key (not shown).
This signal is generated as a cue to the recording position on the program area when program information is recorded by an additional write command from the board, and is supplied to the recording operation control circuit 5, so that the recording operation control circuit 5 makes a request determination. If it is not a program information recording standby request, this routine ends.

In the case of a program information recording standby request, it is determined whether or not the disc is an unrecorded disc (step S4).
. This is determined from the contents of the unrecorded flag. If the disc is an unrecorded disc, a search command is issued to a predetermined recording start position within the program area of the disc (step S5).
In response to this search command, the search circuit 8 sends a jump control signal indicating a predetermined recording start position (for example, 00 minutes 02 seconds 01 frame) to the tracking control system 4 and the slider.
Occurs in the servo system. This is because the actual pose area is defined as 2 seconds or more, and in short, it is sufficient to select an appropriate search position for 2 seconds or more. After executing step S5, the process moves to step S11, which will be described later. If the disc is a disc on which program information has already been recorded, a search command to the final recording position is generated (step S6). The search circuit 8 uses the ATIP data to control the tracking control system 4 so that the pickup 2 is located at these positions.
Search control is performed while driving the slider servo system.

After executing step S6, it is determined whether any information is recorded after the searched final recording position (step S7). That is, from the subcode signal from the subcode reading circuit 9, information such as the track number TNO, index number INDEX, time data of the playback time PTIME and absolute playback time ATIME within the track number is obtained from the information reading circuit 16. If there is no recording, as shown in FIG. 4, no recording has been made after the last searched recording position, and in this case, the process moves to step S11. On the other hand, if information is recorded beyond the searched position, the process moves to step S8.

In step S8, it is determined whether the recorded information after the searched final recording position is pause information. As shown in FIG. 5, when pause information is further recorded following the last recorded program information to form a pause area, that is, when the pause area is formed,
Index number INDE obtained from the code reading circuit 9
When X=00, the playback time PTIME and absolute playback time ATI within the track number at the same position in the pause area
ME, and the value of the addition result is set as the final recording position (step S9). As mentioned above, since the intra-track number playback time PTIME in the pause area indicates the remaining time of the pause period, the intra-track number playback time PTIME
Adding E and absolute playback time ATIME indicates the absolute playback time at the end position of the pause area. When the actual final recording position is obtained in step S9, the process moves to step S6 to search for the actual final recording position. That is, when the recording operation control circuit 5 obtains a determination result from the information reading circuit 16 that the recorded information after the searched position is pause information, the recording operation control circuit 5 activates the time data adder 19.
The output value is read, and a command to the search circuit 8 is issued to the search circuit 8 using that value as the final recording position.

[0024] If it is determined in step S8 that the recorded information after the last recorded position searched is not pause information, this means that the recorded content of the PMA is incorrect, and this rule
Finish Chin. Since this termination is due to an abnormality, PM
It is necessary to record A. In step S11, it is determined whether a request to record program information has occurred. If a request to record program information has not occurred, it is determined whether another request such as a request to stop recording has occurred (step S12). When a program information recording request is generated, a program information recording operation is performed (step S13). Then, it is determined whether a command to stop the recording operation has been issued (step S14).
). This stop command is generated from the above-mentioned keyboard or by automatically detecting the end of program information, for example, the end of a song. If a stop command is issued, the program information recording operation is stopped (step S15).
, performs a pose information recording operation (step S16). In the pause information recording operation, the contents of the pause information outputted from the pause information generating circuit 20 are controlled in accordance with the control signal from the recording operation control circuit 5, as shown in FIG.
As shown in , the recorded track number TNO is increased by 1, and the recorded index number INDEX is increased to 0.
0 and the playback time within the recorded track number PTIM
E is decreased from a predetermined value every frame. Next, it is determined whether or not the recording operation of the pose information should be ended (step S17). That is, it is determined that the pause information recording operation should be ended when the playback time PTIME within the track number to be recorded reaches 00 minutes 00 seconds 00 frames. In this manner, when it is determined that the recording operation of the pose information should be ended, the recording operation of the pose information is stopped (step S18). Therefore, each time recording of program information for one track number is completed, pause information is automatically recorded, and a pause area is formed as shown in FIG.

FIGS. 7 and 8 show operations obtained by executing a program as an embodiment of the second invention of the present application. This operation is performed in the apparatus shown in FIG. 1, and the operations in steps S1 to S15 are the same as those shown in FIG. However, if it is determined in step S3 that it is not a program information recording standby request, step S3
Move to 1. Steps S31 to S33 are the same as steps S4, S6, and S7 in FIG. If it is determined in step S33 that information has been recorded after the final recording position obtained from the PMA, this routine is terminated, and if it is determined that no information has been recorded after the final recording position, the - The recording operation of the image information is performed (step S34). Next, it is determined whether or not the pose information recording operation has been completed (step S35), and when it is determined that the pose information recording operation has been completed, the pose information recording operation is stopped (step S36). ). In this operation, pause information is automatically recorded and a pause area is formed when no program information recording standby request or program information recording request is generated.

[0026]

[Effects of the Invention] As described above, according to the first invention of the present application,
The program information recording operation is stopped in response to a recording stop command during the program information recording operation, and when it is determined that the program information recording operation has stopped, the program information is recorded after the last recorded program information recording position on the recording disk. The information is recorded only for a predetermined period of time. Therefore,
Every time recording of program information is completed, pause information is recorded following the recording end position of the program information and pause information is recorded.
area is formed.

Further, according to the second invention of the present application, when it is determined that both the program information recording operation and the recording standby operation are stopped, the last recorded program information on the recording disk is Pause information is recorded for a predetermined period after the recording position. Therefore, pause information is automatically recorded and a pause area is formed when the recording apparatus is simply powered on and no request for program information recording operation or recording standby operation is generated.

Therefore, according to the first and second inventions of the present application, there is no need to record pause information after the generation of an additional write command for program information, and the timing for recording the next new program information is not missed. It can be recorded without any problems. Furthermore, the user does not need to consider the formation of the pause area at all, making it easier to record program information.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the first invention of the present application.

FIG. 2 is a flow diagram showing the operation of the device of FIG. 1;

FIG. 3 is a flow diagram showing the operation of the device of FIG. 1;

FIG. 4 is a diagram showing a recording state without a pause area on the disk.

FIG. 5 is a diagram showing a recording state with a pause area on the disk.

FIG. 6 is a diagram showing the formation of a pause area in a write-once CD.

FIG. 7 is a flow diagram showing an embodiment of the second invention of the present application.

FIG. 8 is a flow diagram showing an embodiment of the second invention of the present application.

FIG. 9 is a diagram showing the recording state of each data on a CD.

[Explanation of symbols of main parts]

1 Recording disc 2 Pickup 3 Focus control system 4 Tracking control system 5 Recording operation control circuit 6 Recording signal generation circuit 9 Subcode reading circuit 10 Microcomputer 12 FM demodulator 16 Information reading circuit

Claims (2)

[Claims] 1. An optical information recording device that records program information and pause information as a break between the program information on a write-once type recording disk using an irradiation beam from a pickup, wherein the program information is means for stopping the recording operation of the program information in response to a recording stop command during a recording operation; a determining means for determining whether the recording operation of the program information has stopped; and a means for determining whether the recording operation of the program information has been stopped by the determining means. 1. An optical information recording device comprising: recording means for recording the pause information for a predetermined period after the recording position of the last recorded program information on the recording disk when the determination is made. 2. An optical information recording device that records program information and pause information as a break between the program information on a write-once type recording disk using an irradiation beam from a pickup, wherein the program information a determining means for determining whether both the recording operation and the recording standby operation are stopped; and a state where the determining means stops both the recording operation of the program information and the recording standby operation. and recording means for recording the pause information for a predetermined period after the recording position of the last recorded program information on the recording disk.