JP2001160265A - Voice information recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent troubles such as occurrence of sound jumping and a noise, and the like at the time of reproduction even if recording operation recording voice information in a recording medium is interrupted halfway. SOLUTION: A controller 8 receives voice information from a host computer through an external interface 10, holds temporarily it in a buffer memory 9, divides voice information held in the buffer memory 9 into plural recording units, and records them in a track formed on a disk 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio information recording / reproducing apparatus for recording and reproducing audio information on various recording media such as CD-R and CD-RW recordable as information recording media.

[0002]

2. Description of the Related Art For example, audio information on a compact disk (CD) as a recording medium is recorded in a form called a track (usually corresponding to one music piece). In an audio information recording / reproducing apparatus that records or reproduces audio information on such a CD, during reproduction, this track is continuously reproduced without interruption, so that an uninterrupted reproduction sound can be obtained. Is recorded continuously without breaks, so that continuous recording can be performed.

[0003] However, when a failure such as a recording error or a reproduction error, a recording interruption, or an external impact occurs, the audio information cannot be recorded or reproduced without a break, and problems such as skipping and noise occur. I will.

In the audio information recording / reproducing apparatus, audio information on a CD is reproduced in units called sectors. In practice, one sector of one sector is recorded on a recording medium based on the recording method regulations (CIRC, interleave). Information is recorded as a physical area mixed over three sectors.

[0005] Therefore, if recording or reproduction is interrupted at an arbitrary position, information over the three sectors is lost, causing noise and sound skipping. Therefore, in order to perform recording and reproduction smoothly, it is necessary to perform recording and reproduction continuously.

Conventionally, as a countermeasure against sound skipping during reproduction, an audio information reproducing apparatus which reads audio information from a recording medium, accumulates the information in a buffer, reads out the buffer, and reproduces the information (for example, see Japanese Patent Application Laid-Open No. 7-302465). )was there.

The above audio information reproducing apparatus reproduces audio information from a buffer at a standard speed while reading and accumulating the audio information from a recording medium to a buffer at a speed higher than a standard speed, thereby recording by shock or the like. Even if the reading of the audio information from the medium is delayed, the audio information stored in the buffer is reproduced to prevent skipping.

At the time of reproduction by the audio information reproducing apparatus, when audio information of sector n is obtained, n to (n + 2)
The information of the sector n is obtained by decoding the information over three sectors and extracting the audio information of the sector n. By storing it in a buffer,
After that, even if the reproduction is interrupted, the information up to the sector n is stored in the buffer.

Before the audio output reaches the sector n, reading from the recording medium is resumed, and the sector (n +
By rereading from 1), the information after (n + 1) is accumulated in the buffer, so that the audio output can be reproduced without skipping and noise.

[0010]

However, as described above, the sound information reproducing apparatus for preventing sound skipping during reproduction has a problem that the sound information recording / reproducing apparatus does not generate noise due to sound skipping during recording or interruption of recording. There was a problem that it could not be prevented.

As a cause of the recording interruption, in addition to the interruption by the user, when the audio information is processed by a computer, the processing cannot be completed in time, and the information to be recorded on the disc is lost (“buffer underrun”). Is called)
There is.

In a conventional audio information reproducing apparatus, for example, when recording is interrupted after recording sector n on a disk,
A part of the information of the sector n distributed to the sectors (n + 1) and (n + 2) is lost.

Therefore, when re-recording from the sector (n + 1), it is conceivable to perform recording by taking into account the information of the sector n. It is practically impossible to connect and record the sector (n + 1) and noise is always generated at the time of reproduction of the joint.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and there is no problem such as skipping of sound or generation of noise during reproduction even if a recording operation for recording audio information on a recording medium is interrupted. The purpose is to be.

[0015]

In order to achieve the above object, the present invention provides a voice information receiving means for receiving voice information from the outside, a temporary holding means for temporarily storing voice information received by the means, In the audio information recording / reproducing apparatus provided with audio information recording means for recording the audio information held in the means on a recording medium, the audio information recording means may store the audio information held in the temporary holding means in a plurality of recording units. And recording control means for recording the data on a track formed on the recording medium.

Also, a voice information receiving means for receiving voice information from the outside, a temporary holding means for temporarily storing the voice information received by the means, and a voice for recording the voice information held by the means on a recording medium In the audio information recording / reproducing apparatus provided with information recording means, when a predetermined amount of audio information is stored in the temporary holding means in the audio information recording means, the predetermined amount of audio information is used as one recording unit to store the audio information. It is preferable to provide recording control means for recording data on a track formed on the recording medium at a speed higher than the speed at which the receiving means receives audio information from the outside.

Further, in the audio information recording / reproducing apparatus as described above, before the predetermined amount of audio information is stored in the temporary holding means in the audio information recording means, the audio information is transmitted to the audio information receiving means. It is preferable to provide recording control means for immediately recording the unrecorded audio information as one recording unit on the recording medium when the input is interrupted.

In the above-mentioned audio information recording / reproducing apparatus, the audio information recording means stores the audio information in the audio information receiving means before the predetermined amount of audio information is stored in the temporary holding means. When the input is interrupted, a recording control means for adding predetermined pattern information to the unrecorded audio information and recording the recording information as one recording unit satisfying the predetermined amount on the recording medium may be provided.

Further, in the audio information recording / reproducing apparatus as described above, before the predetermined amount of audio information is stored in the temporary holding means in the audio information recording means, the audio information is transmitted to the audio information receiving means. When the input is interrupted, it is preferable to provide a recording control unit that stands by while holding the unrecorded audio information in the temporary storage unit.

In the audio information recording / reproducing apparatus as described above, before the predetermined amount of audio information is stored in the temporary holding means in the audio information recording means, the audio information is transmitted to the audio information receiving means. When the input is interrupted, first recording control means for immediately recording the unrecorded audio information as one recording unit on the recording medium, and before the predetermined amount of audio information is stored in the temporary holding means. When the input of the audio information to the audio information receiving means is interrupted, a predetermined pattern information is added to the unrecorded audio information to record the recording information on the recording medium as one recording unit satisfying the predetermined amount. Recording control means; and when the input of voice information to the voice information receiving means is interrupted before the predetermined amount of voice information is stored in the temporary holding means, the unrecorded voice information is stored in the temporary holding means. A third recording control means for waiting while holding, may be provided with means for selecting either one of the means of the first to third recording control means.

Further, in the audio information recording / reproducing apparatus as described above, audio information reading means for reading audio information of a plurality of recording units recorded on the recording medium, and audio information of each recording unit read by the means. Provision of temporary storage means for temporarily storing data and reproduction control means for preventing reproduction and output of a link sector for connecting to audio information of the preceding and succeeding recording units included in each recording unit stored in the means. Good.

In the audio information recording / reproducing apparatus as described above, the speed at which the audio information reading means reads the audio information from the recording medium into the temporary storage means is higher than the speed at which the audio information is reproduced and output from the temporary storage means. It is preferable to provide means for controlling the temporary storage means so as not to be emptied at a high speed.

Further, the length of the recording unit may be fixed.

[0024]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, an outline of an embodiment of the present invention will be described. For example, the minimum playback unit of a CD is
A unit called a sector.
2352 bytes (Byte) of information are included, and in the case of audio information, one sector includes 2352 bytes of information.

The information of one sector is actually recorded in a mixed manner over three sectors as a physical area on the disk in accordance with the definition of the recording method (CIRC, interleave).

One minimum recording unit is a packet or EF.
An M recording sequence (hereinafter referred to as a “packet”), which is composed of one or more reproducible user data sectors, p link sectors provided in front thereof, and q link sectors provided in the back. And sectors.

The contents of these link sectors are specified by a predetermined standard, and are sectors necessary for connecting packets when recording data on a CD. The sectors do not include user data. . Note that, according to the above rules, the configuration of the link block is different, but the minimum recording unit is collectively referred to as a “packet” for the sake of simplicity.

That is, the inaccuracy of the joint due to the lack of recording accuracy and the information protruding in the CIRC and interleaving are absorbed by the link part by the link sector, so that the lack of information due to the link does not occur in the user data. I have. Such a recording rule is called a “linking rule”.

A packet is not used for recording audio information, but is a minimum recording unit dedicated to recording data information, and a minimum recording unit when recording audio information is an EFM recording sequence.

A write-once compact disc (CD-
R) and rewritable compact discs (CD-RW) include a disc-at-once method, a track-at-once method, and a packet write method. In a conventional audio information reproducing apparatus, the above-mentioned disc-at-once method or track-at-once method is used for recording audio information.

In the disk-at-once method, the entire disk is recorded. In the track-at-once method, a track (a recording unit capable of recording up to 99 pieces on a CD medium, and in the case of audio, usually corresponds to one song) is one packet. In this method, the user data sectors in the track are continuous, and there is no link sector between the user data sectors.

On the other hand, the packet write method is a method in which the above-mentioned track is divided into a plurality of packets, and recording is performed for each packet. In the packet write method, recording is performed in packet units, so that user data sectors in one track are discretely present, and a link sector exists between each user data sector. The packet write method is not used for recording conventional audio information.

This is because, in the packet write system, a link sector exists in one track (one song), and a normal reproducing apparatus reproduces the link sector in order to reproduce the track without interruption. Therefore, the sound is skipped and reproduced as noise.

However, if only the user data on the disc is connected and output as an audio output, the recording / reproduction of the audio information by the packet write recording method becomes possible. Therefore, in the following embodiment, an audio information recording / reproducing apparatus which records and reproduces audio information using a packet recording method in which a track according to the present invention is divided into a plurality of recording units and recorded will be described.

FIG. 1 is a block diagram showing a configuration example of an optical disk drive which is one embodiment of the audio information recording / reproducing apparatus of the present invention.

As shown in FIG. 1, the optical disk drive comprises a motor 1 for rotating a disk 11 such as a CD-RW disk, a coarse motor 2 for moving an optical pickup 3 in the radial direction of the disk 11, and a disk 11 An optical pickup 3 for irradiating a laser beam to a recording area of the optical pickup 3, a rotation control system 4 for controlling the rotation of the motor 1, a coarse movement motor control system 5 for controlling the drive of the coarse movement motor 2, and an optical pickup 3
And a pickup control system 6 for controlling the irradiation of the laser light.

A signal processing system 7 for transmitting and receiving a signal of electronic information read by the optical pickup 3 and a signal of electronic information to be written to a recording area of the disk 10, a CPU,
A controller 8 that is realized by a microcomputer including a ROM, a RAM, and the like, executes the audio information recording process and the like according to the present invention, as well as controls the entire optical disk drive, and a buffer that temporarily stores data read from the disk 11. It also has a memory 9 and an external interface 10 for controlling the exchange of data between the host computer and the controller 8.

This optical disk drive emits a laser beam with a reproducing power at the time of reproducing data, and reproduces data based on the reflected light. At the time of data recording, a laser beam is emitted at a recording power, and a signal is recorded on a disk.

FIG. 2 shows audio information {Audio (Audio) information} for a disc such as a CD-R or CD-RW.
FIG. 3 is a diagram showing a format example of an EFM recording sequence which is a minimum recording unit of FIG.

As described above, the conventional packet is not used for recording the audio information, and the recording of the audio information is called an EFM recording sequence. In the case of audio recording, the EFM recording sequence 21 includes a link sector 22 of one interleave length (a length extending over two sectors, substantially two sectors) before a user data block 23, and a one after the user data. There is a link sector 24 with an interleave length.

(1) The audio information recording function according to claim 1 of the present invention in the optical disk drive. In this case, the controller 8 and the external interface 1
0 functions as a voice information receiving means for receiving voice information from the outside, and the buffer memory 9 functions as a voice information holding means for storing the voice information received by the voice information receiving means.

The optical pickup 3, the pickup control system 6, the signal processing system 7, the controller 8, etc.
It functions as a voice information recording unit that records the voice information held by the voice information holding unit on a recording medium. Further, the controller 8 functions as a recording control unit that divides the audio information held in the audio information holding unit into a plurality of recording units and records the divided information on a track formed on a recording medium.

FIG. 3 is a flowchart showing audio information recording processing according to the first aspect of the present invention in the optical disk drive shown in FIG. The controller 8
After the start of the audio information recording in step (indicated by "S" in the figure) 1, the process proceeds to step 2 where the audio information is input and divided into a plurality of EFM recording sequences, and the process proceeds to step 3 for each EFM recording sequence. Recording is performed on the track of the disc, and the recording of the audio information is completed. Note that, in practice, an operation is performed in which audio information is input and recording is performed on a disc for each EFM recording sequence.

In this way, by dividing the audio information into packets and recording them on the disc, the information can be recorded intermittently. Therefore, it is not necessary to record the tracks at once without a break, and even if the recording is interrupted on the way, all the audio information can be recorded on the disc so that skipping does not occur during reproduction.

(2) Audio information recording function according to claim 2 of the present invention in the optical disk drive In the audio information recording function described in the above (1), audio information is input at a standard speed. Therefore, it takes more time to record than to take in the audio information by the recording time for providing the link sector.

That is, if the recording speed to the disk is made equal to the audio input speed, the audio information remains in the buffer memory for the recording of the link sector.
Eventually, the buffer memory may become full and audio information may not be stored. Therefore, next, recording control for preventing the buffer memory from becoming full will be described.

In this case, the controller 8 and the external interface 10 function as a voice information receiving means for receiving voice information from the outside, and the buffer memory 9
It functions as a voice information holding unit that holds the voice information received by the voice information receiving unit.

The optical pickup 3, the pickup control system 6, the signal processing system 7, the controller 8, etc.
It functions as a voice information recording unit that records the voice information held by the voice information holding unit on a recording medium.

Further, when a predetermined amount of voice information is stored in the voice information holding means, the controller 8 sets the predetermined amount of voice information as one recording unit, and the speed is higher than the speed of receiving voice information from the outside by the voice information receiving means. It functions as recording control means for recording at a high speed on a track formed on a recording medium.

FIG. 4 is a flow chart showing the audio information recording process according to the second aspect of the present invention in the optical disk drive shown in FIG. The controller 8
After the start of the audio information recording in step (indicated by "S" in the figure) 11, the process proceeds to step 12 to check whether or not the recording process is completed, and if completed, the process proceeds to step 16 to end the audio information recording. I do.

If it is determined in step 12 that the recording process is not completed but the process is continued, the process proceeds to step 13 to input audio information to the buffer memory, and proceeds to step 14 to determine whether a predetermined amount of audio information has been stored. I do.

If it is determined in step 14 that the predetermined amount is not stored, the process returns to step 12 and repeats the above-described processing, and waits until the predetermined amount is stored. Partly EF
As the M recording sequence, the audio information is recorded on the disc at a speed higher than the information input speed, the process returns to step 12, and if it is determined in step 12 that the recording process has been completed, the process proceeds to step 16 to end the audio information recording.

In this way, when a predetermined amount of audio information is stored in the buffer memory and a part of the information is recorded as a packet on a track on the disk, the recording speed on the disk is made faster than the audio input speed. The buffer memory does not always become full, and can always receive audio information.

(3) The audio information recording function according to the third aspect of the present invention in this optical disk drive In the audio information recording function described in the above (1) and (2), when the input of the audio information is interrupted, the buffer memory Voice information may remain in the inside. Therefore, next, a description will be given of recording control that effectively uses the audio information remaining in the buffer memory when audio information input is interrupted.

In this case, when the input of audio information to the audio information receiving means is interrupted before a predetermined amount of audio information is stored in the audio information holding means, the controller 8 deletes the unrecorded audio information. It functions as a recording control means for immediately recording on a recording medium as one recording unit.

FIG. 5 is a flowchart showing the audio information recording processing according to the third aspect of the present invention in the optical disk drive shown in FIG. The controller 8
After the start of the audio information recording in step (indicated by "S" in the figure) 21, the process proceeds to step 22 to check whether or not the recording process is completed, and if completed, the process proceeds to step 28 to end the audio information recording. I do.

If it is determined in step 22 that the recording process is not completed but the process is continued, the process proceeds to step 23 to input audio information to the buffer memory, and proceeds to step 24 to determine whether a predetermined amount of audio information has been stored. I do.

If the predetermined amount is not accumulated in step 24, the flow advances to step 26 to determine whether or not the input of audio information has been interrupted. If not interrupted, the flow returns to step 22; The audio information stored in the buffer memory is recorded on the disk as an EFM recording sequence, and the process returns to step S22.

If the predetermined amount has been stored in the determination in step 24, the process proceeds to step 25, where a part of the voice information stored in the buffer memory is used as an EFM recording sequence, and the voice information is stored on the disc at a speed higher than the information input speed. Recording is performed, and the process returns to step 22. If it is determined in step 22 that the recording process is completed, the process proceeds to step 28, where the audio information recording is completed.

As described above, when the audio information remains in the buffer memory when the input of the audio information is interrupted, the audio information is immediately recorded on the disk, and the audio information is recorded on the disk almost in real time. be able to.

(4) The audio information recording function according to the fourth aspect of the present invention in the optical disk drive In the audio information recording function described in the above (3), the audio information recording function remains in the buffer memory when the audio information input is interrupted. Since the recorded audio information is recorded on the disk as it is, the recording unit with other audio information on the disk may not be aligned.

Next, recording control for recording the audio information remaining in the buffer memory so that the recording unit with the other audio information on the disk is aligned will be described.

In this case, when the input of the voice information to the voice information receiving means is interrupted before a predetermined amount of voice information is stored in the voice information holding means, the controller 8 adds the voice information to the unrecorded voice information. It functions as a recording control unit for adding predetermined pattern information and recording on a recording medium as one recording unit satisfying a predetermined amount.

FIG. 6 is a flow chart showing the audio information recording processing according to claim 4 of the present invention in the optical disk drive shown in FIG. The controller 8
After the start of the audio information recording in step (indicated by "S" in the figure) 31, the process proceeds to step 32 to check whether or not the recording process is completed. I do.

If it is determined in step 32 that the recording process is not completed but the process is continued, the process proceeds to step 33 to input audio information to the buffer memory, and proceeds to step 34 to determine whether a predetermined amount of audio information has been stored. I do.

If the predetermined amount is not accumulated in step 34, the process proceeds to step 36 to determine whether or not the input of audio information has been interrupted. If not interrupted, the process returns to step 32, and if interrupted, the process proceeds to step 37. A predetermined pattern (for example, "All-0") is added to the audio information stored in the buffer memory so as to fill the predetermined EFM sequence amount, and the process proceeds to step 38 where the audio information is recorded as an EFM recording sequence on a disc. Recorded above, and return to step 32.

When the predetermined amount is stored in the determination at step 34, the process proceeds to step 35, where a part of the voice information stored in the buffer memory is used as an EFM recording sequence, and the voice information is stored on the disc at a speed higher than the information input speed. The recording is performed, and the process returns to step 32. If it is determined in step 32 that the recording process has been completed, the process proceeds to step 39 to end the audio information recording.

As described above, when recording the audio information remaining in the buffer memory when the input of the audio information is interrupted, if the remaining information amount is less than the predetermined amount, the
Since additional recording is performed in a predetermined pattern such as 1-0 (audio silence), the packet size on the disc can be made uniform to some extent.

(5) Audio information recording function according to claim 5 of the present invention in the optical disk drive In the audio information recording function described in the above (1) and (2), the input of audio information is interrupted and the audio information is stored in the buffer memory. Even if the voice information remains, there is a possibility that additional voice information will be input after a while.

Next, a description will be given of a recording control in consideration of a case where the input is restarted after a while when the audio information input is interrupted.

In this case, when the input of voice information to the voice information receiving means is interrupted before a predetermined amount of voice information is stored in the voice information holding means, the controller 8 deletes the unrecorded voice information. It functions as a recording control unit that stands by while holding the audio information holding unit.

FIG. 7 is a flowchart showing the audio information recording processing according to the fifth aspect of the present invention in the optical disk drive shown in FIG. The controller 8
After the start of the audio information recording in step (indicated by "S" in the figure) 41, the process proceeds to step 42 to check whether or not the recording process is completed. I do.

If it is determined in step 42 that the recording processing is not completed but the processing is continued, the flow advances to step 43 to input audio information to the buffer memory, and the flow advances to step 44 to determine whether a predetermined amount of audio information has been stored. I do.

If it is determined in step 44 that the audio information has not been stored in the predetermined amount, the flow advances to step 46 to determine whether or not the input of audio information has been interrupted. If not interrupted, the flow returns to step 42. The process returns to step 42 while leaving the data on the buffer memory so that the data is not recorded on the disk.

If a predetermined amount of audio information has been stored in the determination in step 44, the process proceeds to step 45, where a part of the audio information stored in the buffer memory is used as an EFM recording sequence, and the audio information is stored on the disc at a speed higher than the information input speed. Recording is performed, and the process returns to step 42. If it is determined in step 42 that the recording process has been completed, the process proceeds to step 47 to end the audio information recording.

In this way, when the input of audio information is interrupted, the audio information remaining in the buffer memory is not immediately recorded on the disk but is retained, so that when the subsequent audio information is input, They can be recorded together as a packet.

(6) Audio information recording function according to claim 6 of the present invention in this optical disk drive It is convenient if the recording control functions of (3) to (5) can be arbitrarily selected by the user. Thus, next, a description will be given of a process for enabling each of the recording control functions to be selected.

In this case, when the input of voice information to the voice information receiving means is interrupted before a predetermined amount of voice information is stored in the voice information holding means, the controller 8 deletes the unrecorded voice information. First recording control means for immediately recording on the recording medium as one recording unit, and when input of audio information to the audio information receiving means is interrupted before a predetermined amount of audio information is stored in the audio information holding means. A second recording control unit that adds predetermined pattern information to the unrecorded audio information and records the recording information on a recording medium as one recording unit that satisfies a predetermined amount; and stores a predetermined amount of audio information in the audio information holding unit. When the input of audio information to the audio information receiving unit is interrupted before the recording, the third recording control unit that stands by while holding the unrecorded audio information in the audio information holding unit; and the first to third recording control units. Recording control means Performs the function of a means for selecting either one of the means.

FIG. 8 is a flow chart showing the audio information recording processing according to claim 6 of the present invention in the optical disk drive shown in FIG. The controller 8
In step (indicated by "S" in the figure) 51, after the start of the audio information recording, the process proceeds to step 52 to check whether or not the recording process is completed. I do.

If it is determined in step 52 that the recording processing is not completed but the processing is continued, the flow advances to step 53 to input audio information to the buffer memory, and the flow advances to step 54 to determine whether a predetermined amount of audio information has been stored. I do.

If the predetermined amount is not accumulated in step 54, the flow advances to step 56 to determine whether or not the input of audio information has been interrupted. If not interrupted, the flow returns to step 52, and if interrupted, the flow advances to step 57. It is determined whether or not the audio information on the buffer memory is left as it is.

This step 57 is based on whether or not the recording control function of waiting while holding the audio information in the buffer memory is selected. If it is selected, it is determined that the audio information is left as it is.

If it is determined in step 57 that the audio information is to be left as it is, the audio information in the buffer memory is not recorded on the disk but is left as it is, and the process returns to step 52. If it is determined in step 57 that the voice information is not left as it is, the process proceeds to step 58, where it is determined whether a predetermined pattern is added to the voice information to fill in the shortfall.

In this step 58, when the recording control function of recording a disc in such a manner that a predetermined pattern is added to the audio information in the buffer memory so as to satisfy the predetermined amount of packets is selected, the shortage is determined by the predetermined pattern. When it is determined that the data is to be filled and the recording control function for immediately recording the audio information in the buffer memory as it is on the disk is selected, it is determined that the shortage is not filled with the predetermined pattern.

If it is determined in step 58 that the shortage is to be filled with the predetermined pattern, the process proceeds to step 59, where the voice information stored in the buffer memory has a predetermined pattern (for example, "All-0") until the predetermined EFM sequence amount is reached. ) Is added so as to fill in the data, and the flow advances to step 60 to record the audio information on the disc as an EFM recording sequence.
It returns to step 52.

If it is determined in step 58 that the shortage is not filled with the predetermined pattern, the flow advances to step 60 to record the audio information stored in the buffer memory as an EFM recording sequence on the disk, and the flow returns to step 52.

On the other hand, if the predetermined amount has been stored in the determination of step 54, the process proceeds to step 55, where a part of the voice information stored in the buffer memory is used as an EFM recording sequence, and the relevant voice information is recorded on the disc at a speed higher than the information input speed. The information is recorded, and the process returns to step 52. If it is determined in step 52 that the recording process has been completed, the process proceeds to step 61 to end the audio information recording.

That is, in the above-described processing, the end check is performed after the start of the recording of the audio information, and if the processing is completed, the end processing is performed. If the processing is to be continued, the audio information is input to the buffer memory, and the process waits until a predetermined amount of audio information is accumulated. When a predetermined amount of audio information has been stored, a part of the stored audio information is recorded as an EFM recording sequence on the disc at a speed higher than the audio information input speed.

When the input of audio information is interrupted, and when the user's specification is set to leave the information in the buffer memory as it is, the audio information is left in the buffer memory as it is, Wait without recording.

When the audio information in the buffer memory is set to be recorded on the disc, and when the setting is made to fill the EFM sequence amount with a predetermined pattern so as to satisfy the predetermined amount, it remains in the buffer memory. Unfilled audio information not yet recorded on the disc is filled with a predetermined pattern such as All-0 until the EFM sequence amount reaches a predetermined amount, and the audio information is recorded on the disc as an EFM recording sequence.

If the recording is set to be directly recorded on the disk, audio information not recorded on the disk remaining in the buffer memory is recorded on the disk as an EFM recording sequence.

As described above, when the audio information remains in the buffer memory, the user can perform the operations (3) to (5) described above.
Since any one of the recording control functions shown in (1) and (2) can be selected, it is possible to perform an optimal process according to the interruption reason of the audio information.

(7) The audio information reproducing function according to the seventh aspect of the present invention in this optical disk drive. In the track of the disk recorded by the recording control function described in (1) to (6), a linking rule is used. There is a link sector. If the audio information including the link sector is reproduced as it is, noise is generated.

Next, a description will be given of a reproduction function for reproducing the audio information recorded on the disk in packet units by the recording control function so as not to cause skipping or noise.

In this case, the optical pickup 3, the pickup control system 6, the signal processing system 7, the controller 8 and the like function as audio information reading means for reading audio information of a plurality of recording units recorded on the recording medium. The buffer memory 9 functions as a temporary storage unit for temporarily storing the audio information of each recording unit read by the audio information reading unit.

Also, the controller 8 has a function of a reproduction control means for preventing reproduction of link sectors for linking to audio information of the preceding and succeeding recording units included in each recording unit stored in the temporary storage means. Fulfill.

FIG. 9 is a flowchart showing audio information reproduction processing according to claim 7 of the present invention in the optical disk drive shown in FIG. The controller 8
After the reproduction of the audio information is started in step (indicated by "S" in the figure) 71, the process proceeds to step 72, in which the link sector on the disc is not output, and only the user data is reproduced and output, and then the process proceeds to step 73. The audio information reproduction ends.

In this manner, by not outputting the audio information link block on the disk as audio,
Noise can be prevented from being generated in the output sound.

(8) The audio information reproducing function according to claim 8 of the present invention in the optical disk drive. In the reproduction control function described in (7), the output speed of audio information output from the buffer memory to the outside, If the speed at which the audio information is read into the buffer memory is the same, the input to the buffer memory will be delayed by the time required to reproduce the link block existing on the disk, and the buffer memory will be emptied and output to the outside There is a possibility that sound information is lost and sound skips.

Next, a description will be given of a reproduction function for reproducing data so that skipping or noise caused by emptying of the buffer memory does not occur.

In this case, the controller 8 sets the speed of reading the audio information from the recording medium to the temporary storage means by the audio information reading means higher than the speed of reproducing and outputting from the temporary storage means, so that the temporary storage means becomes empty. It performs the function of a control means so as not to become inconsistent.

FIG. 10 is a flowchart showing audio information reproduction processing according to the eighth aspect of the present invention in the optical disk drive shown in FIG. Controller 8
After the reproduction of the audio information is started in step (indicated by "S" in FIG. 81) 81, the flow advances to step 82 to determine whether or not a predetermined amount of audio information is present in the buffer memory.

If it is determined in step 82 that the predetermined amount of audio information does not exist in the buffer memory, the flow advances to step 87 to read only the user data of the audio information from the disk into the buffer memory, and returns to step 82.

If it is determined in step 82 that a predetermined amount of audio information is present in the buffer memory, the flow advances to step 83 to start outputting audio information, and the flow advances to step 84 to determine whether or not the reproduction of the audio information has ended. to decide.

When the reproduction of the audio information is completed in step 84, the flow advances to step 88 to end the reproduction of the audio information. If the reproduction of the audio information is not completed in step 84, the process proceeds to step 85 to determine whether there is a predetermined space in the buffer memory. If there is no space, the process returns to step 84; Then, only the user data of the audio information is read from the disk into the buffer memory, and the process returns to step 84.

In the process shown in FIG. 10, the link sector is not input to the buffer memory. However, in an actual implementation, the link sector is fetched into the buffer memory, and the link sector is output when audio information is output. Only the user data may be output without outputting the sector.

In this case, in steps 87 and 86 during the above processing, all the audio information on the disk is read into the buffer memory, and in step 83, only the user data is output.

In this way, by making the reading speed from the disk to the buffer memory faster than the speed of outputting from the buffer memory to the outside, it is possible to prevent the occurrence of sound skipping without emptying the buffer memory. it can.
Further, since the link section is not reproduced, generation of noise can be prevented.

(9) Audio information recording function according to the ninth aspect of the present invention in this optical disk drive The packet write system is further classified into two types, a fixed length packet write system and a variable length packet write system.

The number of user data blocks in a packet is called a packet length. A system in which this packet length is fixed in a track is a fixed length packet write system, and a system in which packets of various packet lengths are mixed in a track is variable. This is called a long packet write method.

In the fixed length packet write system, since the packet size is constant, it is possible to calculate in advance where the link sector (link section) is at the time of reproducing the audio information, and it is easy to control the skipping of the link section. Become. Therefore, next, a recording control function for easily skipping the link sector of the audio information will be described.

In this case, in the recording control function, the length of a recording unit when recording audio information on a disc is set to a fixed length. In this way, by adopting the fixed-length packet write method in which the packet size when recording audio information on the disc is a fixed length, recording / reproduction control is simplified, and the link sector of the audio information can be easily formed. Can be skipped.

[0113]

As described above, according to the audio information recording / reproducing apparatus of the present invention, even if the recording operation for recording the audio information on the recording medium is interrupted on the way, the occurrence of sound skipping, noise, etc. at the time of reproduction. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example of an optical disk drive which is an embodiment of an audio information recording / reproducing apparatus according to the present invention.

FIG. 2 is an EFM which is a minimum recording unit of audio information (audio information) for a disc such as a CD-R or a CD-RW.
FIG. 3 is a diagram illustrating a format example of a recording sequence.

FIG. 3 is a flowchart showing audio information recording processing according to claim 1 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 4 is a flowchart showing audio information recording processing according to claim 2 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 5 is a flowchart showing audio information recording processing according to claim 3 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 6 is a flowchart showing audio information recording processing according to claim 4 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 7 is a flowchart showing audio information recording processing according to claim 5 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 8 is a flowchart showing audio information recording processing according to claim 6 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 9 is a flowchart showing audio information reproduction processing according to claim 7 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 10 is a flowchart showing audio information reproduction processing according to claim 8 of the present invention in the optical disk drive shown in FIG. 1;

[Explanation of symbols]

 1: Motor 2: Coarse motor 3: Optical pickup 4: Rotation control system 5: Coarse motor control system 6: Pickup control system 7: Signal processing system 8: Controller 9: Buffer memory 10: External interface 11: Disk 21: EFM recording sequence 22, 24: link sector 23: user data block

Claims (9)

[Claims] 1. A voice information receiving means for receiving voice information from the outside, a voice information holding means for holding the voice information received by the means, and a voice information recording means for recording the voice information held by the means on a recording medium. Means for recording and reproducing audio information, wherein the audio information recording means divides the audio information held in the audio information holding means into a plurality of recording units and records the divided audio information on a track formed on the recording medium. An audio information recording / reproducing apparatus, comprising: 2. A voice information receiving means for receiving voice information from the outside, a voice information holding means for holding the voice information received by the means, and a voice information recording means for recording the voice information held by the means on a recording medium. The audio information recording means, wherein when the audio information recording means stores a predetermined amount of audio information in the audio information holding means, the audio information is used as a recording unit for the predetermined amount of audio information. An audio information recording / reproducing apparatus, further comprising recording control means for recording on a track formed on the recording medium at a speed higher than a speed at which audio information is received from the outside by the receiving means. 3. The audio information recording / reproducing apparatus according to claim 1, wherein the audio information recording means transmits to the audio information receiving means before the predetermined amount of audio information is stored in the audio information holding means. A recording control means for immediately recording the unrecorded audio information as one recording unit on the recording medium when the input of the audio information is interrupted. 4. The audio information recording / reproducing apparatus according to claim 1, wherein said audio information recording means transmits to said audio information receiving means before said predetermined amount of audio information is stored in said audio information holding means. Recording input means for adding predetermined pattern information to the unrecorded audio information and recording the recording information as one recording unit satisfying the predetermined amount when the input of the audio information is interrupted. Audio information recording and reproducing apparatus. 5. The audio information recording / reproducing apparatus according to claim 1, wherein said audio information recording means transmits to said audio information receiving means before said predetermined amount of audio information is stored in said audio information holding means. An audio information recording / reproducing apparatus, further comprising: a recording control unit that stands by when the input of the audio information is interrupted while holding the unrecorded audio information in the audio information holding unit. 6. The audio information recording / reproducing apparatus according to claim 1, wherein said audio information recording means transmits to said audio information receiving means before said predetermined amount of audio information is stored in said audio information holding means. When the input of the audio information is interrupted, the first recording control means for immediately recording the unrecorded audio information as one recording unit on the recording medium, and the predetermined amount of audio information are stored in the audio information holding means. When the input of audio information to the audio information receiving means is interrupted before being stored, predetermined pattern information is added to the unrecorded audio information, and the recording medium is recorded on the recording medium as one recording unit satisfying the predetermined amount. Second recording control means for recording, and when the input of voice information to the voice information receiving means is interrupted before the predetermined amount of voice information is stored in the voice information holding means, the unrecorded voice Information 3. A voice information recording apparatus comprising: a third recording control unit that stands by while holding the voice information holding unit; and a unit that selects any one of the first to third recording control units. Playback device. 7. The audio information recording / reproducing apparatus according to claim 1, wherein: audio information reading means for reading audio information of a plurality of recording units recorded on the recording medium; Temporary storage means for temporarily storing the read audio information of each recording unit, and does not reproduce and output the link sector for connecting to the audio information of the preceding and following recording units included in each recording unit stored in the means. And an audio information recording / reproducing apparatus provided with a reproducing control means. 8. The audio information recording / reproducing apparatus according to claim 7, wherein a reading speed of the audio information from the recording medium to the temporary storage unit by the audio information reading unit is higher than a reproduction speed of the temporary storage unit. An audio information recording / reproducing apparatus provided with means for controlling the temporary storage means so that the temporary storage means does not become empty. 9. The audio information recording / reproducing apparatus according to claim 1, wherein the length of the recording unit is a fixed length.