JPH09153271A - Recording and reproducing device of information recording medium and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent plural recording media from generating intermittent or jumping sound when they are reproduced successively, by unitarily managing individual TOC information recorded in prescribed areas of individual recording media at the time of reproducing. SOLUTION: An operation part 15, for example, when a successive reproducing is selected for an MD drive unit 11 and an MD drive unit 12, unitarily manages TOC data by means of CPU 6 to perform the successive reproduction. When a successive reproduction is command by the operation part 15, it is judged whether or not the reproduction is approaching to the final address of MD1 under reproduction. And a standby condition whether or not data transmission is possible is checked, and if MD1 is under the standby condition, the data at the final address position of MD1 are transmitted to a memory part 5. This transmission is completed, and then it is checked whether or not data are requested from a memory control part 4 to MD2, and if there is a margin of data storage, a unit 12 side goes to reproduction state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact disc (C) for reproducing music information which is very commonly used.
D-DA) with the same shape and TOC (Table) on the inner circumference
A CD-R (compact disc-recordable) that has an Of Contents area and is capable of recording music information on the outer periphery thereof, or a TOC area on the inner periphery of the same. The present invention relates to a recording / reproducing apparatus for a mini disc (hereinafter simply referred to as MD) capable of recording with a diameter smaller than -R.

[0002]

2. Description of the Related Art Conventionally, a CD-DA dedicated to music reproduction is known as a recording medium that has little signal deterioration during dubbing, is easy to perform signal processing, and reproduces high quality sound. As is well known. Also, this CD-DA
A CD-R capable of recording in the same shape as is also known. Also,
In recent years, a mini disk (MD) having a diameter smaller than that of the CD-DA and the CD-R and capable of freely recording and reproducing has already been sold, and various devices corresponding to these are on the market. By the way, a device that can use each of the above-mentioned disks, or mount a plurality of disks at the same time for continuous reproduction or continuous recording is preferred. As a device having such a function, various devices known as a double cassette deck and a device having a changer function have already been known.

[0003]

By the way, in most cases, music information recorded in one recording medium is completed in that recording medium, and a plurality of such recording media are mounted and continuously reproduced. In that case, the user can listen to the sound without feeling discomfort even at the time of shifting from the first recording medium to the second recording medium. However, music information that is not completed in one recording medium but completed in another recording medium, for example, one song is completed including a second disc for a long recording time of one song. There are cases. When such a recording medium is continuously reproduced by the device as described above, at the moment when the reproduction of one recording medium is inevitably changed to the reproduction of the other recording medium, the reproduction timing does not match, and the sound is cut off or the sound is generated. There was a problem that jumps would occur.

In view of such a problem, therefore, the present invention is particularly concerned with TOC (Table Of Content).
s) Focusing on the medium on which the information is provided, by positively utilizing this TOC information, it is easy to manage and control during operation,
An object of the present invention is to provide a recording / reproducing apparatus for an information recording medium which is easy to use and does not cause skipping or sound break even during continuous reproduction.

[0005]

In order to achieve the above object, the first invention is to install a plurality of information recording media on which TOC information is recorded and to continuously or alternately record the contents of the information recording media. In an information recording medium recording / reproducing apparatus for reproducing in a predetermined order, incoming recording information is recorded in a plurality of mounted information recording media, and TOC information is created based on these recording information, and these are created. Was done
Based on the C information, the TOC information corresponding to each of the information recording media is recorded in a predetermined area of each of the information recording media, while the TOC information recorded in the predetermined area is reproduced during reproduction. (EN) A recording / reproducing apparatus for an information recording medium configured to reproduce and store these TOC information in a distinguishable manner, and to integrally manage the stored TOC information.

As a second invention, a reproducing apparatus for an information recording medium, in which a plurality of information recording media having TOC information recorded therein are mounted and the recorded contents of the information recording medium are continuously or alternately reproduced in a predetermined order. In the information recording, the TOC information is reproduced from each of the information recording media, the TOC information is stored in a distinguishable manner, and the stored TOC information is centrally managed. A medium reproducing apparatus is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below with reference to the drawings. According to the present invention, a plurality of discs are mounted in respective drive units, and TOC information based on the recorded contents is centrally managed,
The purpose is to facilitate the control of each drive unit. First, the overall schematic configuration of a recording / reproducing apparatus for an information recording medium according to the first aspect of the present invention will be described with reference to the block diagram of FIG. 1 is an input terminal for audio signals, 2
Is an A / D for converting analog signals to digital signals
A conversion circuit 3 is an ATRAC circuit provided for MD for compressing and expanding digital audio data, which is a so-called Adaptive Transform Aco.
This is a circuit for performing compression / expansion in the ustic coding method.

Reference numeral 4 is a memory control section, 5 is a memory section for storing temporary data under the control of the memory control section 4, and 6 is a comprehensive control of each section of this apparatus. It is a CPU (central control unit) for controlling 7,
Reference numeral 8 denotes a pair of signal processing circuits for processing CD-R and MD signals, a circuit for performing well-known EFM modulation and demodulation, and a well-known Cross-Int corresponding to CD-R.
erase Read- Solomon Cod
An encoder for adding an error correction code called e (CIRC), or an advanced mode corresponding to MD
An encoder for adding an error correction code called CIRC (ACIRC) and an error correction circuit are provided in pairs.

Numerals 11 and 12 are MD drive units of a well-known structure provided in pairs, and 13 and 14 are CD-R drive units of a well-known structure similarly provided in pairs. Further, 9 and 10 are switching devices for switching the operation of those drive units, 15 is an operating unit (OP), 16 is a display unit for confirming the operating condition and the operating condition, and the device of the present embodiment is It is structured as above.

Next, the above-mentioned MD drive unit 11,
The configuration of 12 will be described with reference to FIG. In the figure, one of the MD drive units 11 will be described because both of the above-mentioned units have the same configuration. Reference numeral 11a denotes a magnetic field modulation type recording head, which is provided integrally with an optical pickup 11f provided on the back side of the MD, and is modulated from the upper surface side to a position irradiated and heated by laser light of the optical pickup 11f. A head for applying a magnetic field to record a predetermined signal. The optical pickup 1c receives the position correction signal from the RF amplifier 11g.
A focus servo for controlling the laser spot of 1f so that it is correctly focused on the MD surface, and its optical pickup 1
A feed motor 11d for controlling in the circumferential direction (rotational direction of the disc) in order to accurately trace 1f to a predetermined track position and for moving the optical pickup 11f.
Alternatively, a tracking servo circuit 11c for controlling the spindle motor 11e for rotating the MD is provided.

FIG. 3 shows the CD-R drive unit 1
In the block diagrams of 3 and 14, since both units have the same configuration, one unit 13
Will be described. Reference numeral 13a is an optical pickup, and this optical pickup 13a is configured to be movable in the radial direction by a sending motor 13b under the control of a servo circuit 13c. The servo circuit 13c is moved from an RF amplifier 13d to a position. Upon receiving the correction signal, the focus control of the optical pickup 13a and the rotation control of the spindle motor 13f are also performed. Also, 13e is an address decorator.
The decoder is a decoder for decoding address information in a track formed in advance on the MD.

The apparatus of the embodiment of the present application has the above-described configuration. The operation of these configurations will be described below.
4 to 10 show the CPU 6 in order to perform the operation.
Flow chart of the program stored in advance in the internal memory
It is. This device consists of MD drive unit and CD-
The R drive units can be used individually, or units of the same type can be used simultaneously.

FIG. 4 is a flow chart showing the main routine of this apparatus. In each step (steps S1 to S6), which drive unit the disk is loaded in is sequentially checked. As a result, when the disc is loaded, the operation routine of the corresponding drive unit is executed (steps S7 to S).
12).

First, only the MD drive unit 11 has M
The case where D is attached will be described. The mounting is detected by executing step S1 in FIG. 4, and the operation routine of the MD drive unit 11 in step S7 is executed. FIG. 5 is a flow chart showing the operation routine.
It is a chart. In the figure, the operation unit (O
When the recording operation is selected by P) 15, this is detected by the execution of step S1, and the process proceeds to the execution of the recording operation of step S10. Thereby, the CP
A control signal is supplied from U6 to the switch 9 to switch the MD drive unit 11 side to operate, and an encoder and an error correction circuit for adding an error correction code in the signal processing unit 7 are provided. It is put into operation (step S11). Further, the control signal is also supplied to the switching device 10, the MD drive unit 12, the CD-R drive unit 14, and the signal processing unit 8 are sequentially deactivated (steps S12 and S13), and the ATRAC unit 3 is also activated.
Is activated.

When these initial settings are completed,
The recording operation will be started. As a result, as shown in FIG. 1, the analog audio signal input from the input terminal 1 is converted into a digital signal in the A / D conversion circuit 2, and the digital signal is known in the ATRAC circuit 3 as Adaptive TransformTransformAco.
A compression process of the usttic coding method is performed.

Thereafter, the compression data is stored in the memory controller.
The signal passes through the rule unit 4 in a through state and is supplied to the signal processing unit 7. This input data is the EFM modulation or CIRC.
Encoding processing for adding an error correction code called (ACIRC) is performed, and this signal is recorded as a magnetic field-modulated signal through the recording head 11a.

On the other hand, the optical pickup 11f provided integrally with the recording head 11a heats and irradiates the corresponding position on the back side of the MD with laser light. At this irradiation position, the address information provided on the groove-shaped track previously formed on the MD is stored in the address decoder 11.
It is decoded by h, and its position is controlled based on this information. When the recording is performed as described above and the recording is completed, for example, the operation unit 15 is instructed to end the recording, and subsequently, the TOC data is instructed. As a result, under the control of the CPU 6, a predetermined address table prepared in advance in the memory unit 5 through the memory control unit 4 makes known the information such as the track start time and the read-in / read-out time information. The TOC data is created (step S17).

The memory unit 5 is divided into a TOC data area and an acoustic data area, as conceptually shown in FIG. 10, and the TOC data is stored in the TOC data area. The sound data from each disk is stored in the sound data area. And T
The OC data area includes the TOC1 dedicated data area and TO.
It is separated into the data area dedicated to C2, and the MD drive unit 11 and C are included in the data area dedicated to TOC1.
T of the disc mounted in the D-R drive unit 13
The OC data is stored, and the TOC2 dedicated data area is used to store the TOC data of the disks mounted in the MD drive unit 12 and the CD-R drive unit 14. By separating the storage areas in this way, the TOC data of each disk can be easily identified.

Subsequent to the creation of the above data, a control signal is supplied from the CPU 6 to the head drive circuit 11b and the servo circuit 11c, and the recording head 11a and the optical pickup 11f are moved in the inner peripheral direction of the MD. (Step S18), and the created TO is stored in the memory control section 4.
An instruction to transfer the C data to the signal processing unit 7 is given, the TOC data supplied thereto is subjected to predetermined signal processing, and thereafter, is recorded in the inner peripheral area of the MD by the recording head 11a, This routine is completed.

On the other hand, when the reproducing operation is selected by the operation unit 15, the switch 9 is operated by the MD drive unit 1
At the same time as switching to the 1 side, a control signal is supplied to the signal processing circuit 7 to activate the ACIRC of the decoder for decoding the error correction code (step S3). Subsequently, the switch 10 deactivates the MD drive unit 12 and the CD-R drive unit 14, deactivates the signal processing unit 8, and simultaneously
The AC circuit 3 is activated (steps S4 to S).
6).

A control signal is supplied to the servo circuit 11c to move the optical pickup 11f toward the TOC recording area in the inner circumference, and the reproduced TOC data is passed through the signal processor 7 to the memory controller. The data is stored in the memory unit 5 from the unit 4 (steps S7 and S8). And this TO
The C data is used for moving the optical pickup 11f to a corresponding track position in response to the operation information from the operation unit 15 when, for example, a reproduction request for the music information of the second music piece is made. It will be provided (step S9).

The signal reproduced by the optical pickup 11a and supplied to the signal processing circuit 7 is demodulated into an EFM signal in the opposite manner to that at the time of recording, and is subjected to ACIRC decoding processing such as error code correction. To be done. Then, this signal is temporarily stored at a predetermined address position in the memory section 5 under the control of the memory control section 4. Since the stored data is compression data, it is read out intermittently at a predetermined time interval and supplied to the ATRAC unit 3. Therefore, even if the optical pickup 11a is deviated from a predetermined position due to some impact, if the optical pickup 11a is returned to the normal position before the reading operation is performed due to the intermittent reading, data jump is prevented. It is designed so that it can be done. Further, this compressed signal is expanded in the ATRAC unit 3, converted into an analog signal in the D / A conversion circuit 17, and then output from the output terminal 18.

Next, FIG. 6 is an operation flow of the MD drive unit 12, which is basically the same as the description of FIG. 5 described above, and the control operations of the MD drive unit 11 and the MD drive unit 12 are exchanged. Since the other points are the same as those described above, further description will be omitted.

Next, the CD-R drive unit 13 has a C
A case where the D-R is mounted will be described with reference to FIG. 7.
Even in this case, basically, there is no difference from that described in FIG. 5, and in the use example of the recording operation, C is used.
The D-R drive unit 13 is activated, and the MD drive unit 11, MD drive unit 12, and C
The D-R drive unit 14 is deactivated, the CIRC encoder for adding the error correction code in the signal processing unit 7 is activated (step S3), the ATRAC unit 3 is turned on, and the others. Shows the same operation flow as described with reference to FIG. Further, the reproducing operation will be apparent from FIG. 7 without further detailed description.

Further, FIG. 8 is a flow chart when the CD-R is mounted on the CD-R drive unit 14,
As shown in the figure, this also exhibits the operation according to the above-mentioned FIG. 6, and the detailed description will be omitted.

Next, a case where the MD, which is the main use example of the present embodiment, is mounted on the MD drive unit 11 and the MD drive unit 12 and used will be described with reference to FIG. First, when a recording operation is selected by the operation unit (OP) 15, this is detected by the operation of step S1, and the process proceeds to the recording (recording) operation step of step S9. As a result, a control signal is supplied from the CPU 6 to the switch 9 to switch the MD drive unit 11 side to operate, and a control signal is also supplied to the switch 10 to switch the MD drive unit 12 side (step S10).

Next, the ACIRC encoder for adding the error correction code in the signal processing units 7 and 8 is activated and the ATRAC encoder of the ATRAC unit 3 is added.
Is activated (steps S11 and S12). When these operations are completed, the MD drive units 11 and 12 start the recording operation similar to that described with reference to FIG. After the end of this recording operation, the CPU 6 issues an instruction to create TOC data of each disk, and based on this instruction, the respective address table in the corresponding data storage area through the memory control section 4 respectively. TOC data is created. (Step S15).

Then, the CPU 6 to the head drive circuit 11
b, 12b and the servo circuits 11c, 12c are supplied with control signals to move the recording heads 11a, 12a and the optical pickups 11f, 12f to the TOC area in the inner circumferential direction of each MD (step S16). The TOC data of one MD is sent to the signal processing unit 7 in the memory control unit 4.
, And the TOC data is recorded in the inner peripheral area of the MD through the recording head 11a after the predetermined signal processing (step S17).
Similarly, the TOC data corresponding to the other MD is also recorded in the TOC area via the recording head 12a (step S18). Thus, the routine for recording is completed.

Next, when the reproducing operation is selected by the operation unit 15, the switch 9 is operated by the MD drive unit 1
1 and the CD-R drive unit 13 is deactivated (step S2), and the switching device 1
0 is switched to MD drive unit 12 side, CD
-R drive unit 14 is deactivated (step S3).

Thereafter, a control signal is supplied to the signal processing circuits 7 and 8 to activate the decoder for decoding the error correction code (step S3), and ATRAC.
The ATRAC decoder of the section 3 is also activated (step S5). Then, the TOC data of the MD mounted on the MD drive unit 11 is reproduced and stored in a predetermined table area prepared in the memory unit 5 so that the information of this MD can be discriminated. To be done.

Similarly, the TOC data of the MD mounted on the MD drive unit 12 is reproduced, and a predetermined value in the memory section 5 is specified so that the TOC data corresponding to this MD can be determined. Stored in the area.
In this way, these two TOC data are recorded in the memory unit 5 while being centrally managed under the control of the CPU 6.

Next, in step S8, the operation unit 15
Therefore, for example, when continuous reproduction of the MD drive unit 11 and the MD drive unit 12 is selected,
The CPU 6 centrally manages TOC data for continuous reproduction. FIG. 11 is a flow chart showing the reproduction timing of both drive units in step S8. That is, when an instruction for continuous reproduction is issued from the operation unit 15, it is determined in step S1 whether or not the final address of the MD1 being reproduced is near.
This determination is made by previously reading the final recording address of MD1 stored in the TOC1-dedicated data area by the CPU 6, and referring to this.

If the final address is not approached,
The reproduction state of MD1 is continued (step S6), and the standby state of whether or not data transfer is possible is confirmed (step S2). If it is not in the standby state, the standby state is set, and the process returns to step S6. If it is in the standby state, the process proceeds to step S3, the data at the final address position in the MD1 being reproduced is transferred to the memory unit 5, and it is checked whether or not it is completed (step S3). S3).

Upon completion of this transfer, it is checked whether or not there is a data request from the memory control section 4 to the other disk MD2 (step S4). This check is for checking whether or not there is a room for storing data in the memory unit 5. If there is a margin, the operation of the MD drive unit 11 is completely stopped at that time, and this time the MD drive unit 12 is stopped.
The side shifts to the reproduction state and the transfer of the reproduction data is started (step S5).

Next, in FIG. 10, the CD-R drive unit 13 and the CD-R drive unit 14 are simultaneously loaded with the CD.
This will be described with an example of use when the -R is attached.
In the case of this usage example, basically, there is no difference from the case described in FIG. 9 described above, and the control operation is such that the CD-R drive unit and the MD drive unit are exchanged, and the flow chart in the same figure is used. Will be obvious from

As described above, according to the apparatus of the above-described embodiment, for example, in the case where one song is not completely recorded on each disc, but is recorded over a plurality of discs. In addition, one song can be smoothly and continuously reproduced from one disc to the other disc without an unnatural interval between songs. In addition, one piece of music is completely recorded on each disc, and even when these discs are reproduced, a smoother continuous reproduction than the conventional changer is possible. In addition, by changing the program in the CPU 6, a smooth reproduction can be performed with good switching timing from the music of one disc to the music of the other disc, and from the music of the other disc to the music of one disc. Is something that can be done. Further, since the MD drive 11 and the CD-R drive 14 are provided, one song can be smoothly and continuously reproduced without causing unnatural tunes from one disc to another.

Although not described in the above-mentioned usage example, it is also possible to put one unit in a reproducing state and use the other unit as a recording mode for dubbing. Even in that case, the above-mentioned TOC data can be centrally managed by the CPU 6, so that the control becomes extremely easy.

Next, FIGS. 13 to 17 are a schematic configuration diagram and an operation flow diagram thereof relating to the embodiment of the reproducing apparatus for the information recording medium of the second invention. This embodiment relates to a reproduction-only device, in which the MD drive units 11 and 12 in the device having the configuration shown in FIG.
The CD-R drive units 13 and 14 are replaced with CD drive units 130 and 140, respectively.

FIG. 14 is a diagram corresponding to FIG.
16 is a diagram showing an operation routine of the D-playback drive unit 110, FIG. 15 is a diagram corresponding to FIG. 7 described above, and a diagram showing an operation routine of the CD drive unit 130, FIG.
1 is a diagram corresponding to FIG. 9 described above, showing the operation routine of the drive units 110 and 120 dedicated to MD reproduction, FIG.
7 is a view corresponding to FIG. 10 described above, and showing operation routines of the CD drive units 130 and 140, respectively. As is clear from these figures, the apparatus of the present embodiment is a reproduction-only apparatus, and therefore, the configuration is that of the above-described recording / reproducing apparatus, which is constituted by only the reproducing section. The operation relating to this is the same as the description of the reproducing system in the corresponding figure described above, and thus the description thereof is omitted. Even in such a device, the same effect as that of the above-described device is obtained.

[0040]

According to the apparatus of the present invention, the TOC information of a plurality of information recording media to be mounted can be centrally managed, so that it is easy to control the operation timings of a plurality of corresponding reproducing means. For example, even in the case where one piece of music information is recorded across a plurality of recording media, continuous reproduction is possible without causing sound breaks or skips. In addition, recording information of a plurality of recording media, alternately,
Even in the case of reproduction, there is an effect that smooth reproduction can be performed without sound breaks and skips.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing an overall configuration of a recording / reproducing apparatus according to a first invention of the present application.

FIG. 2 is a schematic block diagram of an MD drive unit 11.

FIG. 3 is a schematic block diagram of a CD-R drive unit 13.

FIG. 4 is a flowchart showing the overall system of the recording / reproducing apparatus in the example.

FIG. 5 is a flowchart showing an operation routine of the MD drive unit 11.

FIG. 6 is a flowchart showing an operation routine of the MD drive unit 12.

FIG. 7 is a flowchart showing an operation routine of the CD-R drive unit 13.

FIG. 8 is a flowchart showing an operation routine of the CD-R drive unit 14.

FIG. 9 is a flowchart showing an operation routine of the MD drive units 11 and 12.

FIG. 10 is a conceptual diagram showing a storage area in the memory unit 5.

FIG. 11 is a detailed flowchart of step 8 in FIG.

FIG. 12 is a flowchart showing the operation routine of the CD-R drive units 13 and 14.

FIG. 13 is a schematic block diagram showing an overall configuration of a recording / reproducing device according to a second invention of the present application.

FIG. 14 is a diagram showing an operation rule of the drive unit 110 for MD only;
It is a flowchart showing chin.

FIG. 15 is a flowchart showing an operation routine of the drive unit 130.

FIG. 16 is a flowchart showing an operation routine of the drive units 110 and 120 for MD only.

FIG. 17 is a flowchart showing an operation routine of the CD drive units 130 and 140.

[Explanation of symbols]

 1 Input Terminal 2 A / D (Analog / Digital) Conversion Circuit 3 ATRAC Circuit 4 Memory Control Section 5 Memory Section 6 CPU (Central Control Unit) 7, 8 Signal Processing Circuit 11, 12 MD Drive Unit 13, 14 CD-R Drive unit 110,120 MD drive unit 130,140 CD drive unit

Claims (2)

[Claims] 1. A recording / reproducing apparatus for an information recording medium, wherein a plurality of information recording media on which TOC information is recorded are mounted and the recorded contents of the plurality of information recording media are continuously or alternately reproduced in a predetermined order. Incoming recording information is recorded in a plurality of mounted information recording media, TOC information is created based on these recording information, and each of the information recording media is supported based on the created TOC information. While the TOC information is recorded in a predetermined area of each of the information recording media, each T recorded in the predetermined area is reproduced at the time of reproduction.
A recording / reproducing apparatus for an information recording medium, which reproduces OC information, stores the TOC information in a distinguishable manner, and centrally manages the stored TOC information. 2. An information recording medium reproducing apparatus for mounting a plurality of information recording mediums having TOC information recorded thereon and reproducing the recorded contents of the information recording medium continuously or alternately in a predetermined order. A reproducing apparatus for an information recording medium, characterized in that TOC information is reproduced from a recording medium, the TOC information is stored in a distinguishable manner, and the stored TOC information is centrally managed.