JP2002269907A - Audio system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-use audio system by eliminating useless digital recording and complex operation of switching recording paths when performing synchronous recording of music data limited in digital copying. SOLUTION: When a digital music signal is digitally recorded with an audio system 1, a CPU 2 starts recording operation of a recording block 8 in synchronization with reproducing operation of a reproducing block 7, and discriminates whether or not a SCMS signal for limiting digital copy is added to a track of the reproduced digital music signal, and when the SCMS signal is added to this track, the CPU eliminates the digital music signal already recorded in the track for present recording, and switching the recording path from a digital path to an analog path, and then makes the recording means re-record this digital music signal in an analog recording mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio system, and more particularly, to an audio system for reproducing music data recorded on a recording medium such as a CD and recording the data on a recording medium such as an MD.

[0002]

2. Description of the Related Art Conventionally, CD (Compact Disc), MD
2. Description of the Related Art An audio system having a synchro-recording function of simultaneously performing digital recording on a recording medium such as an MD while reproducing music data recorded on a recording medium such as a (Mini Disc) or a CD-R (Recordable) has been widely used. . This audio system includes SCMS (Serial Copy Management).
System) is provided as standard with a digital copy generation management standard, and the SCMS limits copying on the digital path to only one generation.

[0003] That is, for example, from CD to MD or CD
-R digital recording is possible, but from the digitally recorded MD or CD-R to another MD or other C-R.
Digital recording on DR is restricted. Where S
When digitally recording from a CD to an MD or CD-R, the CMS adds information (hereinafter referred to as an SCMS signal) indicating whether digital copying is possible to each music data (for example, each track). Copying and digital recording of music data (tracks) to which the SCMS signal is added are restricted.

[0004] This SCMS signal is a CD-R or M
When playing back the music data recorded in D, the CPU in the audio system detects this and limits the second generation digital copy.

Referring to a flowchart of FIG. 4, a digital recording process at the time of synchronous recording in a conventional audio system will be described. Here, although not shown, the audio system includes a CPU, a reproduction block, and a recording block, and each unit is uniformly controlled by the CPU.

FIG. 4 is a flowchart showing the flow of a digital recording process. In the digital recording process of FIG. 4, when music data recorded on a recording medium such as an MD or a CD-R is reproduced by a reproduction block, the CPU detects whether or not the CPU detects the SCMS signal added to the music data. Is determined (step C1). If the SCMS signal added to the music data is detected (step C1;
(YES), the CPU causes the recording block to wait for recording (step C2), and returns to step C1.

If the SCMS signal added to the music data is not detected (step C1; NO), the CP
U determines whether or not the recording is in standby until the SCMS signal is detected (step C3). If the recording is in standby (step C3; YES), recording is started in the recording block 8 (step C4). It returns to step C1. If it is not in the recording standby state (step C3; NO), it is determined whether or not the reproduction of the reproduction block has been completed (step C5). If the reproduction has not been completed (step C5; NO), the process proceeds to step C1. Return. If the reproduction has been completed (step C5; YES), the operations of the reproduction block and the recording block are stopped (step C6), and the digital recording process of FIG. 4 ends.

When the SCMS signal is added to the music data, digital recording cannot be performed. In this case, however, the user manually switches the recording path from the digital path to the analog path, and performs the recording operation again. Thus, music data can be recorded by analog recording.

[0009]

However, as in the above-described digital recording processing, the conventional audio system at the time of digital recording, even if the SCMS signal is added to the music data, until the CPU detects the SCMS signal. During this period, since the recording block has started recording, there is a possibility that unnecessary music data may be recorded during this period.

When the SCMS signal is added to the music data as described above, digital recording cannot be performed. Therefore, the user manually changes the recording path from the digital path to the analog path in order to record the music data in analog form. And the recording operation must be performed again, but there is a problem that the switching and the recording operation are complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a user-friendly audio system which omits useless digital recording and complicated switching of recording paths when performing synchronized recording of music data of which digital copy is restricted. It is.

[0012]

The present invention has the following features in order to achieve the above object. In the following description of the means, a configuration corresponding to the embodiment will be exemplified by parentheses as an example. Reference numerals and the like are reference numerals and the like in the drawings described later.

According to the first aspect of the present invention, there is provided a reproducing means (for example, a reproducing block 7 shown in FIG. 1) for digitally reproducing and analog reproducing a digital music signal recorded on a first recording medium in track units. Recording means for recording a digital music signal reproduced digitally by means or an analog music signal reproduced analogly on a second recording medium in a selected digital recording mode or an analog recording mode in units of tracks (for example, FIG. An audio system (for example, FIG. 1 includes a recording block 8) and a control unit (for example, the CPU 2 shown in FIG. 1) that controls the recording operation of the recording unit in synchronization with the reproduction operation of the reproduction unit. In the audio system 1) shown in the figure, in the digital recording mode, the reproduction operation of the reproduction means is controlled by the synchronization control. When the recording operation of the recording means is started, the discriminating means for discriminating whether or not a restriction signal for restricting digital copying is added to the track of the reproduced digital music signal (for example, FIG. C shown in
PU2, and step A5 shown in FIG. 2), and when the discriminating means determines that the limit signal is added to the track, the recording is performed on the second recording medium in the track to be currently recorded. Erasing means for erasing the completed digital music signal (for example, step A12 shown in FIG. 2), and switching the digital recording mode to the analog recording mode when the digital recording signal is erased by the erasing means. Means (for example, INPUT selector 6 shown in FIG. 1 and step A13 shown in FIG. 2), and when a restriction signal is added to the digital music signal to be recorded, the control means The digital music signal is re-recorded in the analog recording mode by the recording means.

According to the first aspect of the present invention, in an audio system including a reproducing unit, a recording unit, and a control unit, in a digital recording mode, the reproducing operation of the reproducing unit and the recording of the recording unit are performed by synchronous control in a digital recording mode. When the operation is started, the determination means determines whether or not a limit signal for limiting digital copying is added to the track of the reproduced digital music signal, and if the limit signal is added to this track. When it is determined, the erasing means erases the digital music signal recorded on the second recording medium in the track to be currently recorded, and the switching means, when the digital recording signal is erased, By switching the digital recording mode to the analog recording mode, a limit signal is added to the digital music signal to be recorded. If you are, it is re-recorded in the analog recording mode the digital music signal by the recording means.

Therefore, since the digital recording mode can be automatically switched to the analog recording mode and the recording can be performed again, there is no need to manually switch the recording mode and manually perform the recording operation, thereby improving the usability. In addition, useless data can be deleted.

According to a second aspect of the present invention, there is provided a reproducing means (for example, a reproducing block 7 shown in FIG. 1) for digitally and analogly reproducing a digital music signal recorded on a first recording medium in track units, and Recording means for recording a digital music signal reproduced digitally by means or an analog music signal reproduced analogly on a second recording medium in a selected digital recording mode or an analog recording mode in units of tracks (for example, FIG. An audio system (for example, FIG. 1 includes a recording block 8) and a control unit (for example, the CPU 2 shown in FIG. 1) that controls the recording operation of the recording unit in synchronization with the reproduction operation of the reproduction unit. In the audio system 1) shown in the figure, before starting the recording operation of the recording means in the digital recording mode, It said to start the reproduction operation of the reproducing means, judgment means for judging whether limit signal for limiting the digital copy the reproduced tracks are added (e.g., step B shown in CPU 2, and 3 shown in FIG. 1
5) switching means for switching the digital recording mode to the analog recording mode when the discriminating means determines that the limit signal is added to the track (for example, the INPUT selector 6 shown in FIG. 1; Step B14) shown in FIG. 3; and when a restriction signal is added to the digital music signal to be recorded, the control means converts the digital music signal into an analog recording mode by the recording means. It is characterized by recording in.

According to the second aspect of the present invention, in the audio system including the reproducing unit, the recording unit, and the control unit, in the digital recording mode, before the recording operation of the recording unit is started, The reproducing operation of the reproducing means is started, and the determining means determines whether or not a restriction signal for restricting digital copying is added to the reproduced track, and it is determined that the restriction signal is added to the track. In the case, the switching means switches the digital recording mode to an analog recording mode,
When a restriction signal is added to the digital music signal to be recorded, the digital music signal is recorded in an analog recording mode by the recording means.

Therefore, there is no need to manually switch the recording mode and manually perform the recording operation, thereby improving usability. In addition, there is no need to record useless data and delete the data, and the recording operation can be performed quickly.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) Hereinafter, an audio system according to a first embodiment of the present invention will be described in detail with reference to the drawings.

First, the configuration will be described. FIG. 1 is a diagram showing an internal configuration of an audio system 1 according to the present embodiment. In FIG. 1, an audio system 1 includes a C
PU (Central Processing Unit) 2, input unit 3, display unit 4, RAM (Random Access Memory) 5, INPUT selector 6, playback block 7, recording block 8, switch SW
9, an AMP circuit 10, and an AUX terminal 11.

The CPU 2 stores an application program designated from among various application programs corresponding to the audio system 1 stored in a recording medium in a storage device (not shown) in a work memory area in the RAM 5, Various processes are executed in accordance with the application programs stored in the RAM 5, and the processing results are stored in a work memory area in the RAM 5 and displayed on the display unit 4. Then, the processing result stored in the work memory area is stored in a storage destination of a recording medium in the storage device.

The CPU 2 reproduces music data recorded on the disk loaded in the reproduction block 7 in units of track during digital recording in the "synchro" operation mode in a synchronous recording detection process described later (see FIG. 2). At the same time, the recording of this track in the recording block 8 is started, and when the SCMS signal added to the reproduced track is detected, the track recorded on the disk loaded in the recording block 8 is deleted, and this track is deleted. Automatically switch recording path from digital path to analog path for re-recording. At this time, the CPU 2
The track reproduced in the reproduction block 7 is returned to the head (the data start position of the track) and temporarily stopped, and recording is started again from the head of the track by analog recording.

The input unit 3 has various function keys such as a play key, a stop key, a display key, an operation mode designating key, and a recording mode designating key.
Output to PU2.

Here, the operation mode designation key is a key for designating a "synchro" or "manual" operation mode. When the "synchro" operation mode is designated, the reproduction start timing of the music data in the reproduction block 7 is synchronized. Then, recording can be automatically started in the recording block 8, and when the "manual" operation mode is designated, the recording operation of the recording block 8 can be manually operated.

The recording mode designation key is a key for designating a recording mode to be recorded in the recording block 8 as "analog recording" or "digital recording". When "analog recording" is designated, the INPUT selector 6 is turned on. When the “digital recording” is designated, the digital path is directly connected to the digital output of the reproduction block 7. If the recording mode is not designated by the recording mode designation key, "digital recording" is automatically set. Further, a remote controller including the above-described keys may be further provided.

The display unit 4 is a liquid crystal display (LCD).
play: liquid crystal display), LED (Light Emitting D)
iode: a light emitting diode) and performs a required display operation based on a control signal from the CPU 2. For example, TOC (Table Of Contents) information such as progress time of reproduction or recording, track number, operation mode, recording mode and the like are displayed.

The RAM 5 has a work memory area for storing the above-mentioned designated application program, synchronized recording detection processing program, and the like.

The INPUT selector 6 has a plurality of input terminals, a REC_OUT terminal, and an INPUT_OUT terminal. The input selector 6 selects a reproduction signal input to the input terminal by a control signal input from the CPU 2, and selects the selected reproduction. Signal to the REC_OUT terminal and INPUT_OUT
Output from terminal.

For example, a reproduction signal (analog signal) is input to the input terminal from the reproduction block 7 and an AUX terminal 11 connected to an external audio device.
The reproduction signal selected by the control signal input from the control block 2 is output from the REC_OUT terminal as an object to be recorded by the recording block 8, and the reproduction signal is output from the INPUT_OUT terminal to output a sound.

The reproduction block 7 comprises an optical pickup (not shown), a DSP, a tracking thread servo circuit, a spindle servo circuit, a D / A converter, and the like.
According to the control signal input from PU2, the reproduction block 7
The music data stored on a disc such as a CD, CD-R, MD or the like loaded therein is reproduced in track units.

The optical pickup is a CD, CD-R, MD
At the time of reproducing a disc, etc., a thread (not shown) controlled by a tracking thread servo circuit to be described later moves in the radial direction of the disc, and irradiates the disc with laser light, and thereby, from the reflected light, Extract music data recorded on the disc.

A DSP (Digital Signal Processor)
The digital signal read from the disk by the optical pickup is subjected to processing such as EFM decoding. This DS
When digital recording is performed in the recording block 8, P outputs a digital signal subjected to the above-described processing by the CPU 2 to the recording block 8. Further, the DSP outputs to a D / A converter described later when analog recording is performed.

The tracking sled servo circuit moves the optical pickup in the radial direction of the disk by applying a sled drive signal to the sled motor based on various signals input from the DSP during disk reproduction.

The spindle servo circuit controls the spindle motor at a constant linear velocity by applying a spindle drive signal to a spindle motor supporting the disk from below based on various signals input from the DSP during disk reproduction. Then, the disk is rotationally driven.

The D / A converter converts the digital signal processed by the DSP into an analog signal when the disk of the reproduction block 7 is reproduced, and outputs this analog signal to the INPUT selector 6 according to a control signal from the CPU 2. .

Here, various information recorded on a disc such as a CD, a CD-R, and an MD reproduced in the reproduction block 7 will be described.

In a CD or CD-R, information such as each track name (song name) of music data, recording date and time, start address, end address, etc. of each track is recorded as TOC information on the inner circumference (track). I have. Also, SC
In order to comply with the MS standard, information indicating whether the track can be digitally copied is recorded as subcode Q channel information for each subcode block (98 frames).

In the MD, the inner circumference (track)
In addition, information such as each track name (song name) of music data, recording date and time of each track, start address, end address and the like are recorded as TOC information, and the track can be digitally copied in order to comply with the SCMS standard. The information indicating whether or not there is, that is, the SCMS signal is
It is recorded as OC (User Table Of Contents) information.

The recording block 8 includes a magnetic head (not shown), an optical pickup, a DSP, a tracking thread servo circuit, a spindle servo circuit, an A / D converter, and the like.
The music data reproduced in the reproduction block 7 is recorded on a disk such as an MD loaded in the recording block 8. Here, when digital recording is performed, an SCMS signal is added to the digital signal input from the reproduction block 7 according to a control signal from the CPU 2.

The description of the configuration of the optical pickup, tracking sled servo circuit, and spindle servo circuit in the recording block 8 is the same as that in the reproduction block 7, so that the description here is omitted.

The magnetic head is disposed at a position opposite to the optical head with the disk such as an MD loaded in the recording block 8 interposed therebetween. Move in the radial direction. At this time, the magnetic head applies a magnetic field corresponding to the audio signal encoded by the DSP, such as EFM modulation, to the disk.

The A / D converter converts an analog signal input from the reproduction block 7 via the INPUT selector 6 into a digital signal at the time of analog recording in the recording block 8, and outputs the digital signal to a DSP described later.

The DSP performs EFM encoding or the like on the digital audio signal input from the A / D converter during analog recording. In digital recording, A / D
The digital audio signal input from the reproduction block 7 without passing through the converter is subjected to EFM encoding or the like.

The switching SW 9 is switched on (short circuit) and off (open) by a control signal input from the CPU 2. The switch SW9 is turned on during analog recording and turned off during digital recording.

The AMP circuit 10 includes an INPUT selector 6
Amplifies the signal input from the speaker (not shown)
To output sound and music from the speaker.

The AUX terminal 11 is a terminal for connecting other audio equipment such as a record player, a cassette deck, a DAT deck, and an MD deck to the outside.
The analog signal output from the audio device connected to the PUT selector 6 is output.

Next, the operation will be described. Synchronous recording detection processing executed by the CPU 2 of the audio system 1 will be described with reference to the flowchart shown in FIG. Here, a program for realizing each function described in this flowchart is stored in a recording medium in the form of a readable program code,
U2 sequentially executes the operation according to the program code.

Also, in the synchronous recording detection processing,
It is assumed that a disc is loaded inside the reproduction block 7 and the recording block 8, and the recording block 8 starts recording in synchronization with the reproduction timing of the music data recorded on the disc in the reproduction block 7. .

FIG. 2 is a flowchart showing the flow of the synchronous recording detection process. In the synchro-recording detection process of FIG. 2, when the “synchro” operation mode is designated by the operation mode designation key of the input unit 3, the CPU 2 determines whether the recording mode in the recording block 8 is “digital recording”
It is determined whether the recording is “analog recording” (step A1). If “analog recording” is set (step A1; N)
O), the synchronous recording detection process of FIG. 2 is terminated. When the recording mode is set to "digital recording" (step A1; YES), the CPU 2 outputs a control signal to the recording block 8 to wait for recording (step A2).

Next, the CPU 2 waits until the recording standby of the recording block 8 is completed (step A3), and when the recording standby of the recording block 8 is completed (step A3; YE).
S) The music data recorded on the disk of the reproduction block 7 is reproduced in track units, and digital recording is started in the recording block 8 (step A4).

Then, the CPU 2 determines whether or not the SCMS signal added to the track reproduced in the reproduction block 7 has been detected (step A5). If no SCMS signal has been detected (step A5; NO), Step A
6 to A9 are executed. If the SCMS signal is detected (step A5; YES), step A
The processing from 10 to A22 is executed.

First, each processing of steps A6 to A9 will be described. If no SCMS signal is detected,
Until the reproduction of the current track ends, the CPU 2 continues to detect whether or not the SCMS signal is added to this track (step A6; NO → step A5). When the reproduction of the current track ends (step A6; YE
S), it is determined whether there is a next track (step A7).

If there is a next track (step A7; YES), the CPU 2 searches for the next track (step A9), and returns to step A5. If there is no next track (step A7; NO). , Playback block 7
Then, a control signal is output to the recording block 8 to stop the operation (step A8), and the synchronous recording detection process of FIG.

Next, each processing of steps A10 to A22 will be described. If an SCMS signal is detected, C
The PU 2 returns the track reproduced in the reproduction block 7 to the head (the data start position of the track) and temporarily stops the reproduction (step A10).
It is determined whether the track to which the S signal has been added has been recorded at all (step A11).

Here, if the track to which the SCMS signal is added is not recorded (step A11; NO), the process proceeds to step A13. If the track to which the SCMS signal is added is recorded even a little (step A1)
1; YES), the CPU 2 stops the recording operation in the recording block 8 and deletes the recorded track (step A).
12).

Next, the CPU 2 sets the recording mode to "analog recording", selects the analog signal input from the reproduction block 7 by the INPUT selector 6, and turns on (short-circuits) the switch SW9, that is, sets the recording path to digital. Switching from the path to the analog path, the recording block 8 is set to the recording standby (step A13).

Then, the CPU 2 waits until the recording standby of the recording block 8 is completed (step A14), and when the recording standby is completed (step A14; YES), the SCM
The track to which the S signal is added is reproduced and the analog recording in the recording block 8 is started (step A1).
5) Wait until the reproduction of the current track ends (step A16).

Next, the CPU 2 determines whether or not there is a next track (step A17). If there is a next track (step A17; YES), the CPU 2 searches for the next track (step A20) and reproduces it. The block 7 is paused and the recording block 8 is set to the recording standby (step A21), and the recording mode is set to "digital recording", that is, the switch SW9 is turned off (open) to change the recording path from the analog path to the digital path. Switch to the route (step A22) and return to step A3.

If there is no next track (step A17; NO), the CPU 2 stops the operation of the reproduction block 7 and the recording block 8 (step A18), sets the recording mode to "digital recording", and That is, switch SW
9 is turned off (open) to switch the recording path from the analog path to the digital path (step A1).
9), the synchronous recording detection process of FIG. 2 is terminated.

As described above, the CPU 2 executes the “sync”
At the time of digital recording in the operation mode, the music data recorded on the disc loaded in the reproduction block 7 is reproduced in track units, and the SCM added to the reproduced track is reproduced.
When the S signal is detected, the track recorded on the disk loaded in the recording block 8 is deleted, and the recording path is automatically switched from the digital path to the analog path in order to re-record this track. At this time, the CPU 2
Returns the track reproduced in the reproduction block 7 to the beginning (the data start position of the track), temporarily stops the recording, and re-records from the beginning of the track by analog recording.

Therefore, among data (each track) recorded on a disc such as a CD-R, MD, etc., when recording a track that cannot be digitally recorded according to the SCMS standard, the recording path is automatically switched from the digital path to the analog path. Therefore, it is not necessary to manually switch the recording path and manually perform the recording operation, thereby improving usability.

Further, since the CPU 2 can erase the track recorded in the recording block 8 until the SCMS signal is detected and then re-record by analog recording, useless data (part of the track) Recording can be eliminated.

(Second Embodiment) In the first embodiment, the music data recorded on the disk loaded in the reproduction block 7 is tracked before digital recording in the "synchro" operation mode. If the SCMS signal added to this track is detected in advance by reproducing in units, there is no need to digitally record useless data (part of the track) and delete this data.
Processing can be performed smoothly.

Therefore, in the second embodiment, the audio system 1 executes a pre-synchro-recording detection process (see FIG. 3) described later.

A second embodiment of the audio system 1 to which the present invention is applied will be described with reference to FIG. Note that the configuration of the audio system 1 according to the second embodiment is the same as that of the audio system 1 according to the first embodiment shown in FIG. 1, and thus detailed description is omitted, and the same components are the same. The following description is given with reference numerals.

When performing digital recording in the “synchro” operation mode in the synchro-recording pre-detection process (see FIG. 3) described later, the CPU 2 tracks music data recorded on the disc loaded in the reproduction block 7 before recording. When the playback is performed in units and the SCMS signal added to this track is detected, the recording mode is set to “analog recording”, and the recording path is automatically switched from the digital path to the analog path. At this time, the CPU 2 returns the track reproduced in the reproduction block 7 to the beginning (the data start position of the track) and temporarily stops the recording, and starts recording from the beginning of the track by analog recording.

The RAM 5 stores a pre-sync recording detection processing program in the above-described work memory area.

Next, the operation will be described. The pre-synchro-recording detection process executed by the CPU 2 of the audio system 1 according to the second embodiment will be described with reference to the flowchart shown in FIG. In this synchro-recording pre-detection process, it is assumed that a disc is loaded in the playback block 7 and the recording block 8, and the recording block is synchronized with the playback timing of the music data recorded on the disc in the playback block 7. The case where recording is started at 8 will be described.

FIG. 3 is a flowchart showing the flow of the pre-synchro-recording detection process. In the synchro-recording pre-detection process of FIG. 3, when the “synchro” operation mode is designated by the operation mode designation key of the input unit 3, the CPU 2 determines whether the recording mode in the recording block 8 is “digital recording”
It is determined whether the recording is “analog recording” (step B1). If “analog recording” is set (step B1; N)
O), the synchro-recording pre-detection processing of FIG. 3 ends. When the recording mode is set to "digital recording" (step B1; YES), the CPU 2 outputs a control signal to the recording block 8 to wait for recording (step B2).

Next, the CPU 2 waits until the recording standby of the recording block 8 is completed (step B3), and when the recording standby of the recording block 8 is completed (step B3; YE).
S) The music data recorded on the disk of the reproduction block 7 is reproduced in track units (step B4), and it is determined whether or not the SCMS signal added to the reproduced track is detected (step B5).

Here, if no SCMS signal is detected (step B5; NO), the processing of steps B6 to B12 is executed. If the SCMS signal has been detected (step B5; YES), the processing of steps B13 to B22 is executed.

First, each processing of steps B6 to B12 will be described. When the SCMS signal is not detected, the CPU 2 returns the currently reproduced track to the head (the data start position of the track) and temporarily stops the reproduction (step B6), and reproduces the track recorded on the disk of the reproduction block 7. And digital recording in the recording block 8 is started (step B7).

Then, the CPU 2 waits until the reproduction of the current track ends (step B8), and when the reproduction of the current track ends (step B8; YES), determines whether or not there is a next track. (Step B9).

Here, if there is a next track (step B9; YES), the next track is searched (step B11), the operation of the reproduction block 7 is temporarily stopped, and the recording block 8 is set to the recording standby state (step B11). Step B1
2) Return to step B4.

If there is no next track (step B9; NO), the CPU 2 outputs a control signal to the reproduction block 7 and the recording block 8 to stop the operation (step B10), and performs the operation before the sync recording shown in FIG. The detection processing ends.

Next, the processing of steps B13 to B22 is executed. When the SCMS signal is detected, the CPU 2
Returns the track reproduced in the reproduction block 7 to the beginning (data start position of the track) and temporarily stops (step B13).

Next, the CPU 2 sets the recording mode to "analog recording", selects the analog signal input from the reproduction block 7 by the INPUT selector 6, and turns on (short circuit) the switch SW9, that is, sets the recording path to digital. Switching from the path to the analog path (step B14), reproduction of the track to which the SCMS signal is added is started, and analog recording is started in the recording block 8 (step B15).

Then, the CPU 2 waits until the reproduction of the current track ends (step B16), and determines whether or not there is a next track (step B17). Here, if there is a next track (step B17; YE)
S), the CPU 2 searches the next track (step B20), suspends the reproduction block 7, and sets the recording block 8 to the recording standby (step B2).
1) The recording mode is set to "digital recording", that is, the recording path is switched from the analog path to the digital path by turning off (opening) the switch SW9 (step B22), and the process returns to step B3.

If there is no next track (step B17; NO), the CPU 2 outputs a control signal to the reproduction block 7 and the recording block 8 to stop the operation (step B18), and changes the recording mode to “digital recording”. , That is, by turning off (opening) the switch SW9, the recording path is switched from the analog path to the digital path (step B19), and the synchro-recording pre-detection processing of FIG. 3 ends.

As described above, in the second embodiment, the CPU 2 of the audio system 1 performs “sync”
Before digital recording in the operation mode, the playback block 7
Plays back music data recorded on the disc loaded in the track in track units, and adds the SCM added to this track.
When the S signal is detected, the recording mode is set to “analog recording”, and the recording path is automatically switched from the digital path to the analog path. At this time, the CPU 2
Returns the track reproduced in the reproduction block 7 to the beginning (the data start position of the track), temporarily stops the recording, and starts analog recording from the beginning of the track.

Accordingly, for music data recorded on a disc such as a CD-R or MD, for a track that cannot be digitally recorded in accordance with the SCMS standard, the recording path is automatically switched from the digital path to the analog path, and the analog path is changed. Since recording can be performed, there is no need to manually switch the recording path and perform the recording operation, and the usability is improved.

Further, the CPU 2 reproduces the track recorded on the disc of the reproduction block 7 before starting recording, and when detecting the SCMS signal added to this track, changes the recording path from the digital path to the analog path. The track is automatically switched to analog recording, and if the SCMS signal added to this track is not detected, digital recording is performed, so that useless data (part of the track) is recorded and the data is recorded. There is no need to delete, and the recording operation can be performed quickly.

The present invention is not limited to the contents of the above embodiment, but can be appropriately changed without departing from the gist of the present invention. For example, in the present embodiment, the recording mode ("analog recording" or "digital recording") is switched by turning on (short-circuiting) and off (opening) the switching SW9. However, the present invention is not limited to this.
For example, the reproduction block 7 or the recording block 8 may further include an internal selector, and the recording mode may be switched by switching the internal selector.

In this embodiment, the analog signal is switched by the INPUT selector 6.
A digital signal from the reproduction block 7 and an external (for example, audio connected to the AUX terminal 11) device is input to an input terminal of the INPUT selector 6, and a signal (digital signal or analog signal) according to a control signal from the CPU 2. May be selected to switch the recording path.

[0085]

According to the first aspect of the present invention, it is possible to automatically switch from the digital recording mode to the analog recording mode and re-record, eliminating the need to manually switch the recording mode and manually perform the recording operation. , The usability is improved. In addition, useless data can be deleted.

According to the second aspect of the invention, there is no need to manually switch the recording mode and manually perform the recording operation.
Usability improves. In addition, there is no need to record useless data and delete the data, and the recording operation can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a diagram showing an internal configuration of an audio system 1 according to the present embodiment.

FIG. 2 is a flowchart showing a flow of a synchronous recording detection process.

FIG. 3 is a flowchart illustrating a flow of a pre-sync recording detection process.

FIG. 4 is a flowchart showing the flow of a conventional digital recording process.

[Description of Signs] 1 Audio system 2 CPU 3 Input unit 4 Display unit 5 RAM 6 INPUT selector 7 Playback block 8 Recording block 9 Switching SW 10 AMP circuit 11 AUX terminal

Claims (2)

[Claims] 1. A reproduction means for digitally and analogly reproducing a digital music signal recorded on a first recording medium in track units, a digital music signal digitally reproduced by the reproduction means, or an analog music reproduced analogly. Recording means for recording a signal on a second recording medium in a selected digital recording mode or analog recording mode in units of tracks, and control for controlling the recording operation of the recording means in synchronization with the reproduction operation of the reproduction means In the digital recording mode, when the reproducing operation of the reproducing unit and the recording operation of the recording unit are started by the synchronization control, the track of the reproduced digital music signal is provided. Determining means for determining whether a restriction signal for restricting digital copying is added to the Erasing means for erasing a digital music signal recorded on the second recording medium in a track to be currently recorded, when the discriminating means determines that a limit signal is added to the track; Switching means for switching the digital recording mode to an analog recording mode when the digital recording signal is erased by the erasing means, wherein a restriction signal is added to the digital music signal to be recorded. Wherein the control means causes the recording means to re-record the digital music signal in an analog recording mode. 2. A reproduction means for digitally and analogly reproducing a digital music signal recorded on a first recording medium in track units, and a digital music signal digitally reproduced by the reproduction means or an analog music reproduced analogly. Recording means for recording a signal on the second recording medium in units of tracks in a selected digital recording mode or analog recording mode, and control for controlling the recording operation of the recording means in synchronization with the reproduction operation of the reproduction means Means, in the digital recording mode, before starting the recording operation of the recording means, start a reproduction operation of the reproduction means, and a limit signal for restricting digital copy to a reproduced track is provided. Determining means for determining whether or not the track has been added; and Switching means for switching the digital recording mode to the analog recording mode when it is determined that the limit signal is added, wherein a limit signal is added to the digital music signal to be recorded. In this case, the control means causes the digital music signal to be recorded in an analog recording mode by the recording means.