JP2005122888A - Recording and reproducing device of plurality of pieces of information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device of a plurality of pieces of information wherein a plurality of related data can be synchronously reproduced from one disk. <P>SOLUTION: An information recording medium 10 has a first information region 12 for recording or replaying a first continuous information item and a second information region 15 for recording or reproducing a second continuous information item. The recording and reproducing device has a temporary storage means for absorbing difference between recording or reproducing transfer rates of the first and the second continuous information items to the information recording medium, a control means for controlling the temporary storage means and controlling recording or reproducing so as to perform time-sharing alternately to the first and the second continuous regions using one recording or reproducing head moving means; and a control adjusting means for shifting recording or reproducing to operation for alternately performing time-sharing when recording or reproducing is started. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a plurality of information recording / reproducing apparatuses, and in particular, has a plurality of data recording areas having different uses or different data formats, and a plurality of areas (areas) in which a plurality of types of data can be recorded / reproduced. The present invention relates to a recording / reproducing apparatus for a plurality of information that is reproduced in synchronization with an information recording medium.

  Various optical recording media that record information optically or magneto-optically and reproduce optically have been developed and put into practical use. Such optical recording media include read-only media and recording / reproduction media. A conventional hybrid MD (mini disk) has a reproduction area and a recording area, and a CD plus has a CDDA area in which music is recorded and a CDROM area in which computer data is recorded. Although the disc is a single disc, it has a plurality of data recording areas having different uses or different data formats. The same applies to DVDs.

  When data related to each other is recorded in both of the plurality of recording areas (areas), the reproduction is performed as follows. That is, when it is necessary to simply reproduce these related data separately or to synchronize and reproduce the related data, at least one of the related data reproduced from the optical recording medium is taken into the large-capacity memory of the personal computer, The other data was reproduced in synchronization with the reproduction from the optical recording medium.

  In addition, when a karaoke user records his / her singing voice using a disc on which performances such as orchestras are recorded, such as karaoke, and synchronizes playback with the performance, the computer memory is also used for synchronization. I had to take it. Furthermore, the same was true when two related data were to be recorded synchronously.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a plurality of information recording / reproducing apparatuses capable of reproducing a plurality of related two or more pieces of data synchronously from one disc.

In order to achieve the above object, the present invention provides a plurality of information recording / reproducing apparatuses having the following configurations (1) and (2).
(1) An information recording medium having a first information area for recording or reproducing first continuous information and a second information area for recording or reproducing second continuous information;
Temporary storage means for absorbing the difference between the transfer rate of the first continuous information and the transfer rate of the second continuous information, and the transfer rate for recording or reproducing with respect to the information recording medium;
Control writing and reading of the temporary storage means,
Using one recording or reproducing head moving means,
An operation of moving the recording or reproducing head moving means to the first information area and recording or reproducing the first continuous information in the first information area; and the recording or reproducing head moving means. A control means for controlling the operation to move to the second information area and record or reproduce the second continuous information in the second information area alternately in a time-sharing manner;
An operation for recording or reproducing the first continuous information in the first information area and an operation for recording or reproducing the second continuous information in the second information area during a recording or reproduction start operation Control adjustment means for shifting to an operation that is alternately performed in a time-sharing manner,
A recording / reproducing apparatus for a plurality of information, comprising:
(2) When recording is performed on the information recording medium, the management information of the first continuous information or the second continuous information is recorded in a management area of the information recording medium. The apparatus for recording and reproducing a plurality of information according to claim 1.

  Since the plural information recording / reproducing apparatus of the present invention is configured as described above, the following effects are obtained. That is, it is possible to synchronously reproduce related data without using an external personal computer or a large-capacity memory and without interrupting continuous information. In addition, the present invention can perform not only synchronized playback of karaoke performance and user's singing voice, but also synchronized playback with any combination of audio information, video information, character information, and other information having different data formats. In particular, by providing a conventional portable CD player with a function for real-time synchronized reproduction of two or more data, an optical disk apparatus that is inexpensive, convenient for carrying, and has high added value can be provided.

  Hereinafter, the form of the data-recorded disc will be described with reference to the drawings with preferred examples. FIG. 1 is a diagram schematically showing a plane of a preferred example of a data-recorded disc. This disk 10 is an optical recording medium having a diameter of 120 mm, and is directed from the inner periphery toward the outer periphery, the first lead-in area 11, the first data area 12, the first lead-out area 13, the second lead-in area 14, and the second data. The areas are arranged in a substantially concentric manner in the order of the area 15 and the second lead-out area 16. Here, the first lead-in area 11 constitutes a first TOC in which the address of each data in the first data area 12 is recorded, and the second lead-in area 14 is each data in the second data area 15. 2nd TOC which records the address etc. of this is comprised.

  2 and 3 are diagrams schematically showing the recording data of the first and second TOC. The address (start address and end address) of the synchronization data marked with * in FIGS. 2 and 3 is unique, and in the modes marked with Δ, recording is permitted / prohibited, copying is permitted / In addition to prohibition, audio data / video data distinction, monaural / stereo distinction, emphasis on / off distinction, identification data indicating the presence of synchronization information is recorded. The address and identification data of the synchronous data are written in the first and second TOCs at the time of manufacturing the disc in advance, so that the first data area 12 and the second data area 15 can be accessed regardless of which TOC is accessed during reproduction. It is possible to determine whether or not the data should be reproduced synchronously. As a result, three modes of playback, that is, single playback of either the first data area or the second data area and simultaneous synchronous playback of both areas are possible.

  In the above example, both the first data area 12 and the second data area 15 have been recorded, and the synchronous reproduction of information from the reproduction-only disc has been described. However, the karaoke performance is recorded in the first data area 12 in advance. Although the second data area 15 has sectors, the second data area 15 may be recordable and may have no data when the disc is sold. That is, the disc can be used for both recording and reproduction, and the user can record the singing voice in the second data area 15 while reproducing the karaoke performance from the first data area 12, and the performance and the singing voice can be synchronized and reproduced during reproduction. . Note that the disc type in the first TOC of FIG. 2 indicates whether the type is a recording / playback type, a playback-only type, or only one area is a playback-only type.

[Table 1]
An example of using such a recording / playback type disc will be described.
1st data area Karaoke voice or audio with video 2nd data area Put the singing voice of each user, and practice only by playing the 1st data area at the time of practice,
During recording, only the voice of each user may be recorded in the second data area while listening to the first data area, and only the voice of each user in the second data area may be played during playback.
During playback, the first data area and the second data area are played back at the same time and listened to while mixing with the voices of each user, or only the video in the first data area is played back, the sound is not played back, and the second data area is played back. Play the singing voice.

[Table 2]
1st data area Music 2nd data area Video clip related to the above music
A video clip related to the music is recorded in the second data area together with the synchronization information on the TOC, and the image of the video clip is also synchronized and reproduced when it is desired to listen.
In this case, the synchronization information is recorded in both TOCs.
In addition, when the first data area is for reproduction only, for example, the synchronization information is recorded only in the second data area, and only one of them is read during reproduction.

Next, preferred embodiments of the present invention will be described.
FIG. 5 is a flowchart showing a preferred embodiment of the multiple data synchronized playback method. The multiple data synchronous reproduction method and the synchronous recording / reproducing method and synchronous recording method described later are all executed by a disk device having the configuration of the block diagram shown in FIG. The following examples are a synchronized playback method, a synchronized recording / reproducing method, and a synchronized recording method, but the disk device in FIG. 4 has been described as having both recording and playback functions. Needless to say, the recording function is unnecessary.

In FIG. 4, the motor driver / tracking / focus servo control circuit 24 controls the disk 10 to be rotated at a CLV (constant linear velocity) by a spindle (SP) motor 18. The optical head has an optical pickup 20A and a recording magnetic (magnetic field modulation) head 20B, and the movement of the optical head is controlled by a servo control circuit 24. The EFM signal read from the disk 10 by the optical pickup 20A is supplied to the reproduction circuit 28 including a preamplifier and the like, and the output signal is supplied to the signal processing circuit 32. During recording, a signal from the signal processing circuit 32 is supplied to the recording magnetic head 20B via the recording circuit 26 including a recording amplifier. The system controller 30 exchanges signals with the signal processing circuit 32 and the servo control circuit 24 to control the entire optical disc recording / reproducing apparatus. Optical pickup 20
The output signal A is also supplied to the address reproducing circuit 22, where the current track of the optical pickup 20A is obtained from the ADIP signal previously written on the disk, that is, the written address information and velocity information FM-modulated to wobbling. The reproduced address is given to the servo control circuit 24.

The signal processing circuit 32 is provided with terminals for transmitting / receiving the first and second data to / from the outside. Further, the first and second memories 34 and 36 are connected to the signal processing circuit 32, and temporary storage of data and subsequent reading are performed. The output signal of the signal processing circuit 32 is supplied to the motor driver / tracking / focus control circuit 24 to perform rotation control of the spindle motor 18 and tracking servo control and focus servo control of the optical pickup. The optical pickup 20A and the recording magnetic head 20B can be moved in the radial direction of the disk 10 by a traverse motor (not shown), and the objective lens of the optical pickup 20A is moved in the focus direction, that is, in the optical path by a focus servo control mechanism (not shown). It can move in the direction along. The signal processing circuit 32 and the motor driver / tracking / focusing control circuit 24 exchange signals with the system controller 30 to control the operation of the entire disk device. Note that an input unit for the user to input various instructions is not shown. As is well known, the system controller 30 has a CPU, and the signal processing circuit 32 also has a CPU, and performs an operation in accordance with a flowchart described later.

The optical pickup 20A also includes a laser diode that irradiates the disk 10 with a laser beam, and outputs a signal that reproduces optical information recorded on the disk 10 based on the reflected light, or a known astigmatism method. It is also used to detect a focus error signal due to, and a tracking error signal based on the phase difference method. These error signals are processed by the signal processing circuit 32 via the reproduction circuit 28, and necessary feedback information is supplied to the servo control circuit 24. 4 has the recording circuit 26 and the recording magnetic head 20B as in the case of the MD disk device. However, such a recording magnetic head 20B is not necessary in the case of read-only such as CD plus. It is. Further, in the case of a type in which recording is performed by phase change such as a DVD, recording is performed by heating the recording layer so that the recording layer exceeds the phase displacement point by making the laser beam power higher than that during reproduction. The recording magnetic head 20B is unnecessary.

  Next, an embodiment of the present invention will be described with reference to the flowchart of FIG. Both the first and second data areas are recordable areas, and the first data area already contains karaoke voice or voice-attached voice, and the second data area contains each user's singing voice. The process when there is an instruction is as shown in the flowchart of FIG. First, the focus servo is turned on with the power turned on (step S1), the spindle motor is started (step S2), tracking control is performed (step S3), the address is detected (step S4), and the TOC data is read. (Step S5).

  Assuming that a synchronous reproduction instruction is input from a control instruction input unit (not shown), it is determined whether or not such an instruction has been received (step S6). If there is no instruction, the process proceeds to a normal reproduction routine. When there is an instruction for synchronized playback, since the system controller 30 stores TOC data including synchronized data, the data read rate from the disk and the transmission rate of the final data such as audio data are the same as a CD. (Step S7), and if the rate ratio is not 1, the rotational speed of the spindle motor is increased so that the rate ratio is at least a predetermined value of 2 times or more (for example, 4 times) (step S8). . It should be noted that the one having a compression / expansion rate ratio of 5 times as in the MD may be left as it is. FIG. 6 is a diagram schematically showing movement of the optical pickup 20A on the disk 10. As shown in FIG. In the figure, P1 to P11 indicate phases 1 to 11. FIG. 7 is a diagram showing the remaining amount of data in each of the memories 34 and 36 corresponding to the phase of the optical pickup 20A. First, as shown by P1 in FIG. 6, the first data area 12 is accessed (step S9). In the following description, the access to the first data area 12 or the second data area 15 includes an operation of searching for desired data in the data area.

[Table 3]
Hereinafter, each phase will be described.
<Phase 1>
First data is written to the first memory 34 at a quadruple speed until a predetermined value that is not the maximum value is reached (steps S10 and S11)
<Phase 2>
When the predetermined value is reached, access from the first data area to the second data area and the first memory pause (step S12)
<Phase 3>
Writing the second data to the second memory 36 at a quadruple speed and the first memory pause (step S12)
<Phase 4>
When the maximum value is reached, reading from the memory is started synchronously with the first memory data and the second memory data (in this example, the decompression time for the first and second data is synchronized with the compressed data, etc. (Necessary things will be synchronized later)
And access to the first data area (steps S13 and S14).
<Phase 5>
Detects that the remaining amount of the first memory is empty, and writes the first data to the first memory at a quadruple speed (waits while repeating kick at this position until empty is detected)
Reading of both the first data area and the second data area continues at a single speed (steps S15, S16, S17).
<Phase 6>
Access to the second data area Reading of both the first data area and the second data area is continued at a single speed (step S18).
<Phase 7>
It is detected that the remaining amount of the second memory is empty, and the second data is written to the second memory at a quadruple speed (it waits while repeating a kick at this position until the empty is detected).
Reading from both the first memory and the second memory is continued at a single speed (steps S19, S20, S21).
<Phase 8 to Phase 11>
Phases 4, 5, 6, and 7 are repeated until the reproduction of all data is completed (steps S22 → S14).

  In the above operation, writing at quadruple speed compresses the time axis, and time axis expansion is performed by reading data at a speed slower than the writing speed at the time of reading. During playback, the first data area and the second data area can be played back simultaneously and listened to while mixing with the voices of each user, or by this operation, a number of continuous video and audio can be played back continuously. The point here is that the pick-up operation is delayed so that the writing operations to both memories 34 and 36 are not different (phases 1, 2, and 3), and phases 4, 5, 6, and 7 are performed. It is desirable that the read timing on the disk be close to the intermediate time as seen from each of the processes. In addition, it is desirable to allow time for retry processing for dealing with errors such as reading errors from the disk 10.

  The movement transition diagram of FIG. 6 is schematic. Actually, the rotation direction of the disk is constant, and it is necessary to cope with the rotation waiting time and the case where the rotation speeds of the inner and outer disks are different in CLV. Although the memories 34 and 36 in the block diagram of FIG. 4 are divided into two parts, a single memory, for example, a 4 MB memory may be divided and used for the TOC, first, and second areas. Good. In the above example, two different data are synchronously reproduced using two memories, but three or more data can be synchronously reproduced at the same time by a similar method.

  Next, an embodiment of the present invention will be described with reference to the flowcharts shown in FIGS. FIG. 10 is a diagram schematically showing movement of the optical pickup 20A on the disk 10. As shown in FIG. In the figure, P1 to P9 indicate Phase 1 to Phase 9. FIG. 11 is a diagram showing the remaining amount of data in each of the memories 34 and 36 corresponding to the phase of the optical pickup 20A. First, as shown by P1 in FIG. 10, the first data area is accessed.

[Table 4]
Hereinafter, each phase will be described.
<Phase 1>
Start writing data in the first data area to the first memory (4 × speed) up to the maximum value (step S10).
<Phase 2>
When the maximum value is reached, playback is started from the first memory (1 × speed) (steps S11 and S12A).
At the same time, the second data from the outside is written into the second memory (1 × speed) in synchronization with the first data. Start kicking into the predetermined first data area and waiting (repeating kick at this position until a predetermined value is detected) (Standby) (Step S15)
<Phase 3>
When the first memory reaches a predetermined value (or the second memory has an intermediate value between the maximum value and the empty), writing of the data at the continuation position of the first data area to the first memory (four times speed) is started (step S16). Step S17)
Continue reading from first memory Continue writing external second data to second memory <Phase 4>
When the second memory reaches the maximum value, writing to the second memory is stopped (steps S23 and S24),
Access to predetermined second data area (step S25)
Continue reading from the first memory (step S26)
Continue to write external second data to the second memory (step S26)
<Phase 5>
When the second memory reaches the maximum value, a synchronization signal and error correction are added from a predetermined position in the second data area to start sector writing until the disk is empty (4 × speed) (steps S27 and S28).
Continue reading from the first memory (step S29)
Continue to write external second data to the second memory (step S29)
<Phase 6>
When the second memory becomes empty, writing to the disk is stopped (steps S30 and S31),
Access to a predetermined first data area (step S32)
Continue reading from the first memory (step S33)
Continue to write second external data to the second memory (step S33)
<Phase 7>
When the first memory becomes empty, writing of the data at the continuation position of the first data area to the first memory up to the maximum value (four times speed) is started (steps S34 and S35).
Continue reading from the first memory (step S36)
Continue to write external second data to the second memory (step S36)
<Phase 8>
In the same manner as phase 4, the subsequent phases 4, 5, 6, and 7 are repeated until the recording of all data is completed (step S37 → S23).
<Final phase>
When the predetermined recording is completed, the contents that the two data are the synchronization data, the synchronization start address, and the end address are recorded on the TOC at the same time as the title and other necessary data (step S38).
As a result, during playback, the first data area and the second data area can be played back at the same time, and while listening to each user's voice while being mixed, it is possible to play back a number of songs in succession through this operation. It is.

  Next, an example of the synchronous recording method will be described with reference to FIGS. FIG. 12 is a diagram schematically showing the movement of the optical pickup 20A on the disk 10. As shown in FIG. In the figure, P1 to P10 indicate Phase 1 to Phase 10. FIG. 13 is a diagram showing the remaining amount of data in each of the memories 34 and 36 corresponding to the phase of the optical pickup 20A. First, as shown by P1 in FIG. 12, the first data area is accessed. Although a flowchart for the example of the synchronous recording method is omitted, the necessary modifications are added to the flowcharts of the example of the synchronous recording / reproducing method described above (FIGS. 8 and 9). That is, after executing steps S1 to S9 in FIG. 8, the following phases are executed.

[Table 5]
Hereinafter, each phase will be described.
<Phase 1>
First data from the outside to the first memory (1 × speed) is a predetermined value that is not the maximum value (the predetermined value here is a method for detecting that the first memory has reached an intermediate value between the maximum value and empty, Writes until the memory reaches the intermediate value between the maximum value and the empty value) Starts writing second external data to the second memory in synchronization with the first data (1x speed) Predetermined first data Access to area <Phase 2>
When the first memory reaches a predetermined value, a synchronization signal and error correction are added from a predetermined position in the first data area to start sector writing until the disk becomes empty (4 × speed).
Continue writing first data from outside to first memory Continue writing second data from outside to second memory <Phase 3>
Stop writing to the disc with empty,
Access to predetermined second data area Continue writing external first data to first memory Continue writing external second data to second memory <Phase 4>
When the first memory reaches the predetermined maximum value, a synchronization signal and error correction are added from a predetermined position in the second data area, and the sector configuration is performed and writing is started until the disk is empty (4 × speed).
Continue writing first data from outside to first memory Continue writing second data from outside to second memory <Phase 5>
Stop writing to the disc with empty,
Access to the specified first data area (although it is omitted, it waits while repeating the kick at this position until the maximum value is detected)
Continue to write first external data to first memory Continue to write second external data to first memory <Phase 6>
When the first memory reaches a predetermined maximum value, a synchronization signal and error correction are added from a predetermined position in the first data area to form a sector, and writing starts until the disk is empty (4 × speed)
Continue to write first data from outside to first memory Continue to write second data from outside to second memory <Phase 7>
The same as phase 3, and subsequent phases 3, 4, 5, and 6 are repeated.
<Final phase>
When the predetermined recording is completed, the contents that the two data are synchronous data, the synchronous start address, and the end address are recorded on the TOC simultaneously with the title and other necessary data.

It is a top view which shows typically each area | region of the plane of a data-recorded disc. It is a figure which shows typically the data arrangement | sequence of 1st TOC of the data-recorded disc. It is a figure which shows typically the data arrangement | sequence of 2nd TOC of the data-recorded disc. It is a block diagram which shows the example of the disk for implement | achieving this invention. 3 is a flowchart illustrating a preferred embodiment of the present invention. It is a figure which shows the movement locus | trajectory of the optical pick-up in a preferable Example of this invention. It is a graph which shows the relationship between the position of the optical pick-up in the preferable Example of this invention, and the data amount of each memory. 2 is a portion of a flowchart illustrating a preferred embodiment of the present invention. FIG. 8 is a part of a flowchart showing a preferred embodiment of the present invention, and a part following FIG. It is a figure which shows the movement locus | trajectory of the optical pick-up in a preferable Example of this invention. It is a graph which shows the relationship between the position of the optical pick-up in the preferable Example of this invention, and the data amount of each memory. It is a figure which shows the movement locus | trajectory of the optical pick-up in a preferable Example of this invention. It is a graph which shows the relationship between the position of the optical pick-up in the preferable Example of this invention, and the data amount of each memory.

Explanation of symbols

10 optical disc 11 first lead-in area 12 first data area 13 first lead-out area 14 second lead-in area 15 second data area 16 second lead-out area 18 spindle (SP) motor 20A optical pickup 20B magnetic field modulation for recording Head 22 Address reproduction circuit 24 Motor driver / tracking / focus servo control circuit 26 Recording circuit 28 Reproduction circuit 30 System controller 32 Signal processing circuit 34 First memory 36 Second memory

Claims (2)

An information recording medium having a first information area for recording or reproducing first continuous information and a second information area for recording or reproducing second continuous information,
Temporary storage means for absorbing the difference between the transfer rate of the first continuous information and the transfer rate of the second continuous information, and the transfer rate for recording or reproducing with respect to the information recording medium;
Control writing and reading of the temporary storage means,
Using one recording or reproducing head moving means,
An operation of moving the recording or reproducing head moving means to the first information area and recording or reproducing the first continuous information in the first information area; and the recording or reproducing head moving means. A control means for controlling the operation to move to the second information area and record or reproduce the second continuous information in the second information area alternately in a time-sharing manner;
An operation for recording or reproducing the first continuous information in the first information area and an operation for recording or reproducing the second continuous information in the second information area during a recording or reproduction start operation Control adjustment means for shifting to an operation that is alternately performed in a time-sharing manner,
A recording / reproducing apparatus for a plurality of information, comprising: When recording is performed on the information recording medium, the management information of the first continuous information or the second continuous information is recorded in a management area of the information recording medium. A recording / reproducing apparatus for a plurality of information according to Item 1.

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