JPH0567945U - Recording control device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention automatically detects the end of one reproduction signal and starts the output of the other reproduction signal in response to the detection, so that continuous dubbing is easily and reliably performed. It is an object of the present invention to provide a recording control device capable of performing the above-mentioned method. [Configuration] The end of reproduction of an external CD is detected by a validity flag V or a subcode in a DAI format signal. Then, depending on the end of reproduction of this external CD,
Then, the reproduction of the internal CD is started, and the reproduction signals of these both CDs are continuously dubbed to the DAT recorder.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recording control device suitable for continuous dubbing, for example.

[0002]

[Prior Art]

 For example, when continuously recording (dubbing) the reproduced signals of two compact discs (CD) to a recording device such as a digital audio tape (DAT) recorder, one CD player is connected to the DAT recorder and the CD It is necessary to load the player with the first CD and perform the reproduction operation, and when the reproduction of the first CD is completed, replace it with the second CD and perform the reproduction operation again. .. When two CD players are used, it is possible to load the two CDs into each player in advance, which eliminates the need for disc replacement, but when the reproduction of the first CD is completed. Therefore, the operation of reproducing the second CD is still necessary.

[0003]

[Problems to be solved by the device]

 In this way, if there is only one playback device, it takes time to replace the recording medium, and if there are two playback devices, there is no need to replace the recording medium. If not performed, there is a problem that a blank period is created in the recording signal, or if the timing of the recording operation on the recording device side is incorrect, the beginning of the signal will not be recorded when recording on the second recording medium.

The present invention has been made to solve such a conventional problem, and automatically detects the end of one reproduction signal and starts the output of the other reproduction signal in response to the detection. Therefore, it is an object of the present invention to provide a recording control device capable of easily and reliably performing continuous dubbing.

[0005]

[Means for Solving the Problems]

 The recording control device of the present invention firstly has a first reproducing means for reproducing the first recording medium and a second reproducing means for reproducing the second recording medium. This recording medium is, for example, a medium such as a compact disc (CD), a magnetic tape, a magnetic disc, or a magneto-optical disc in which signals such as audio and / or video are recorded, and the reproducing means corresponds to each recording medium. It is a playback device or each circuit required for playback. In this case, the output format of the recording medium reproduction signal may be either digital or analog.

Next, there is provided recording means for recording the reproduction signals outputted from the first and second reproduction means. The means is, for example, a rotary head type or fixed head type DAT recorder, an analog magnetic tape recorder, a magneto-optical disk recorder, etc., and records the reproduced signal output from the first and second reproducing means in a digital or analog format. Do.

Further, the detection means for detecting the reproduction end of the first reproduction means, and the reproduction of the second reproduction means when the reproduction end is detected by the detection means, and the reproduction signal of the first reproduction means is started. And a control means for controlling the reproduction signal of the second reproduction means to be sent to the recording means. This detecting means detects the end of reproduction of the first reproducing means based on the identification signal or position information given from the first reproducing means. The identification signal is, for example, a validity flag defined by the digital audio interface (DAI) standard, and the position information is, for example, TOC (T able of contents) data and absolute time (absolute time) data in CD or DAT. Is. The control means executes a control operation for continuously recording the first and second reproduction signals in the recording means.

Further, in place of the first reproducing means, an input terminal for inputting a digital signal of the external reproducing device is provided, the end of the signal from this input terminal is detected, and another reproducing signal is continuously output. It is also possible to adopt a configuration in which recording is performed by the recording means. This input terminal is, for example, a terminal to which a DAI standard signal is applied.

[0009]

[Action]

 According to the present invention, the detection means automatically detects the end of one reproduction signal, and in response to this detection, the control means starts the output of the other reproduction signal and switches the reproduction signal and sends it to the recording medium. This makes it possible to automatically and easily perform continuous dubbing automatically without requiring a complicated manual operation.

[0010]

【Example】

 Hereinafter, an embodiment in which the present invention is applied to a composite device of CD and DAT will be described in detail with reference to FIGS.

FIG. 1 is a block diagram showing a connection state of an external CD player 1 and a combined CD / DAT device (hereinafter referred to as a CD-DAT device) 2. The external CD player 1 has a configuration equivalent to that of an ordinary commercial product, and is an external CD system 11 including a mechanism for loading / driving a CD, a signal processing system, a servo system, and a control system. Is equipped with. Instruction operations such as a reproduction instruction / music selection instruction to the external CD system 11 are performed by the external CD operation unit 12. Further, the external CD player 1 is provided with a digital output terminal 13, and outputs the stereo L / R channel digital audio data output from the external CD system 11 and each control data of C, U and V. A DAI (digital audio interface) modulator 14 modulates the signal into a DAI format and outputs it from the digital output terminal 13.

Here, the signal format of the above DAI (digital audio interface) will be described with reference to FIG. The DAI format is a signal transmission standard between digital audio devices and is established by EIAJ (Japan Electronic Machinery Manufacturers Association). Generally, a digital audio device such as a CD or DAT is provided with a digital I / O terminal conforming to the DAI standard, and a reproduction signal of a recording medium is transferred to a DAI format signal via the digital I / O terminal. The output is performed as a form, or conversely, a DAI format signal is input through a digital I / O terminal and digitally recorded on a recording medium.

The DAI signal is composed of subframes, frames, and blocks, as shown in FIG. Each subframe has 32 (0 to 31) time slots, and in the case of stereo, one subsample for each L / R channel and two subframes for two channels are transmitted at a sampling period. Two sub-frames for two channels make up one frame, and 192 frames from 0 to 191 make up one block.

The time slots 0 to 3 are assigned to the synchronization preambles, and the L channel subframe has a code “M” and the R channel subframe has a code “W”. In particular, the 0th frame of the L channel subframe located at the head of each block is code "B". These sync preambles are used for sync extraction of blocks, frames and subframes.

The time slots 4 to 7 are used for audio auxiliary information or audio sample word transmission at the time of 24-bit extension. The time slots 8 to 27 are for audio sample words. When the time slot 27 is on the MSB side and one sample data is less than 20 bits, the residual is "0".

The time slot 28 is for transmission of the validity flag V. The validity flag V is transmitted as "0" when the transmitted audio sample word is correct and "1" when it is incorrect. Therefore, if there is a data error in the audio sample word of the subframe due to dropout or the like, and if data that interpolates the data error is transmitted, the subframe period becomes V = 1 and the song is played normally. The subframe period between them becomes V = 0. In the present embodiment, by detecting this validity flag V, it is judged whether the reproduction of the output side device has ended, and the automatic control during continuous dubbing is performed.

The time slot 29 is for transmission of user data U. In the case of a CD or DAT, this user data U is data such as subcode data TOC and start ID. Further, the time slot 30 is for transmission of the channel status C, and in the case of a consumer device, it is a device code on the output side, a sampling frequency code, a copy prohibition code, and the like.

The time slot 31 is for transmission of a parity bit, and this parity bit is an even parity of the time slots 4 to 31 excluding the synchronization preamble.

Returning to the explanation of FIG. 1 again. The CD-DAT device 2 in FIG. 1 has an internal DAT system 21 and an internal CD system 22. The internal DAT system 21 is provided with a mechanism unit for loading / driving a DAT tape, and a circuit unit such as a signal processing system and a servo system for recording / reproducing. Further, the internal CD system 22 is provided with various circuit parts such as a mechanism part for loading / driving a CD, a signal processing system and a servo system. Various operating states of these systems 21 and 22 are controlled by a control signal output by the control unit 24 in response to an operation signal from the input unit 23. The input unit 23 includes an internal DAT operation unit 231 for instructing operation of DAT reproduction / recording, an internal CD operation unit 232 for instructing operation of CD reproduction / music selection, and a dubbing mode changeover switch 233. ..

The dubbing mode selector switch 233 is an internal CD dubbing mode designated when digitally dubbing from a CD to a DAT tape inside the CD-DAT device 2, and a CD from an external playback device connected to the digital input terminal 25. -The external CD dubbing mode specified when digitally dubbing to the DAT tape in the DAT device 2, the reproduction signal of the external reproduction device connected to the digital input terminal 25, and subsequently the reproduction signal of the internal CD is transmitted to the CD-DAT device. It is possible to selectively switch between three types of continuous dubbing modes, which are designated when digitally dubbing to the DAT tape in 2, and dubbing OFF mode which is designated when the dubbing function is not used. is there.

In the CD-DAT device 2, a DAI demodulation unit that demodulates a DAI format signal provided from the digital input terminal 25 and outputs digital audio data and C, U, and V control data. 26 is provided.

The control data V is obtained by demodulating the validity flag V. As described above, the validity flag V indicates "0" when the transmitted audio sample word of the subframe is correct and "1" when it is incorrect. In 1), when the audio sample word of the subframe has a data error due to dropout, etc., and when data is interpolated and transmitted, V = 1 is set for that subframe period and the song is played normally. The sub-frame period during this period is output as V = 0.

Therefore, the control data V obtained by demodulating the validity flag V is data in which the digital audio data in the subframe of the currently input DAI format signal has no error, or In addition to indicating whether the data is erroneous, it is also indicating whether the data is being output as a reproduction signal or the data is in a state other than (before and after) the reproduction period.

The control data U is obtained by demodulating the user data U. When the device on the output side is a CD player or a DAT player as in this embodiment, the user data U indicates subcode data as described above. The control unit 24 inputs the demodulated control data U, constructs subcode data, and uses it for various controls during dubbing.

The control data C is obtained by demodulating the channel status C. The channel status C indicates the device code on the output side, the sampling frequency code, the copy prohibition code, etc., as described above. The control unit 24 receives the demodulated control data C 1 and uses it for controlling the sampling frequency during dubbing.

The demodulated control data V is supplied to the falling edge detection circuit 27 and the continuous 1 detection circuit 28. The fall detection circuit 27 detects that the control data V has fallen from the high level to the low level, and sends a set signal to the set input terminal S of the flip-flop (F / F) circuit 29. Further, the continuous 1 detection circuit 28 detects that the control data V 1 has continuously become high level (“1”) over a predetermined number of subframes, and outputs a reset signal to the reset input terminal R of the F / F circuit 29. Send out.

The number of consecutive subframes when the continuous 1 detection circuit 28 outputs a detection output is set to, for example, more than the number of subframes when a dropout occurs during signal reproduction. That is, when a dropout occurs instantaneously in the reproduction signal of the music, the control data V is "1" because there is a data error during this period, but the number of detected subframes in the continuous 1 detection circuit 28 is Since the preset number of sub-frames is set, the detection output is not output in dropouts below this set number. However, after the reproduction of the music, the control data V becomes "1" continuously thereafter, so that the detection output is output in a predetermined sub-frame after the reproduction of the music.

The F / F circuit 29, which is set by the output of the fall detection circuit 27 and reset by the output of the continuous 1 detection circuit 28, outputs the set output Q to the control section 24. This set output Q becomes a signal indicating that the signal given from the digital input terminal 25 is being reproduced.

The DAI demodulation unit 26 outputs the control data U and C to the control unit 24, demodulates the audio data in the DAI format signal, and outputs the demodulated audio data to the switching circuit 30. The switching circuit 30 switches between the digital audio output of the internal CD system 22 and the digital audio output of the DAI demodulation unit 26 under the control of the control unit 24, and outputs it to the internal DAT system 21.

The analog audio output signals of the internal DAT system 21 and the internal CD system 22 are output to the switching circuit 31. The switching circuit 31 switches between the audio output of the internal CD system 22 and the audio output of the internal DAT system 21 based on the control of the control unit 24 and outputs the output signal. The output signal is output through the amplifier 32 and the speaker 33. Is played. In this case, the control section 24 outputs a control signal to the switching circuit 31 so that the output on the reproduction side of the internal CD system 22 and the internal DAT system 21 is selected.

The TOC memory 34 stores TOC (Table Of Contents) data in subcode data supplied from the internal CD system 22, the internal DAT system 21, and the digital input terminal 25.

Next, the operation of this embodiment having the above configuration will be described. The CD-DAT device 2 has a CD reproducing function and a DAT tape recording / reproducing function, like the ordinary tape recorder with a CD. When these functions are operated independently, the dubbing mode changeover switch 233 is set to the OFF mode. Then, when a predetermined reproduction button operation is performed on the internal CD operation section 232, the internal CD system 232 executes the CD reproduction processing, and the analog audio signal of the reproduced CD is output to the switching circuit 31, the amplifier 32 and the speaker 33. It is emitted through.

When the CD is loaded in the disc loading section (not shown) in the internal CD system 22, the TOC data recorded in the TOC area of the CD is automatically reproduced, and the TOC data is recorded. Are automatically stored in a predetermined area of the TOC memory 34 via the control unit 24.

When a predetermined reproduction operation is performed by the internal DAT operation unit 231, the reproduction processing of the DAT tape is executed by the internal DAT system 231, and the analog audio signal of the reproduced DAT tape is output to the switching circuit 31 and the amplifier. Sound is emitted through the speaker 32 and the speaker 33. When a recording operation is performed, a signal from an analog recording terminal (not shown) is input to the internal DAT system, subjected to signal processing, and then recorded on the DAT tape.

Next, a case where three types of dubbing are performed by the apparatus shown in FIG. 1 will be described. First, in order to perform digital dubbing from an internal CD to a DAT tape using only the CD-DAT device 2, the dubbing mode changeover switch 233 is set to the internal CD dubbing mode. When this internal CD dubbing mode is set, the control unit 24 outputs a control signal to the switching circuits 30 and 31, switches the signal path to the internal DAT system 21 to the internal CD side, and outputs audio to the speaker 33. Switch the route to the internal DAT side. In this case, the output sound from the speaker 33 is a monitor sound obtained by directly analogizing the recording signal of the internal DAT system 21.

Then, as with a normal tape recorder with a CD, if the DAT side is set to a recording state after the CD is reproduced, the digital reproduction output of the CD is sent to the DAT tape via the switching circuit 30. Digitally dubbed.

When digitally dubbing from an external playback device connected to the digital input terminal 25 to a DAT tape in the CD-DAT device 2, the dubbing mode switching switch 233 is set to the external dubbing mode. For example, when an external CD player 1 is connected as shown in FIG. 1, the external CD is digitally dubbed to a DAT tape inside the CD-DAT device 2.

When the external dubbing mode is set, the control unit 24 outputs a control signal to the switching circuits 30 and 31, and switches the signal path to the internal DAT system 21 to the internal CD side and also to the speaker 33. The output voice path is switched to the internal DAT side. In this case, the output sound from the speaker 33 is a monitor sound in which the recording signal of the internal DAT system 21 is directly analogized.

In this state, the external CD operation unit 12 in the external CD player 1 executes the reproduction operation of the external CD, and the internal DAT operation unit 231 in the CD-DAT device 2 executes the recording operation of the internal DAT. To do.

The external CD system 11 receives the reproduction operation instruction signal, executes the reproduction operation of the external CD, outputs the reproduced digital audio signal to the DAI modulator 14, and outputs the reproduced digital audio signal. The control data V corresponding to the corresponding validity flag, the control data U corresponding to the user data, and the control data C corresponding to the channel status are output to the DAI modulator 14, respectively.

The DAI demodulation unit 26 in the CD-DAT device 2 demodulates the DAI signal input from the digital input terminal 25 and outputs digital audio data and control data C, U, V. The control unit 24 receives the DAT recording operation instruction signal and sets the internal DAT system 21 to the recording state. At this time, the control unit 24 determines the device code, sampling frequency code, copy prohibition code, etc. of the signal currently given through the digital input terminal 25 by the demodulated control data C, and the internal DAT system 21 Is set to the corresponding recording status.

In this state, the digital audio data output from the DAI demodulator 26 is given to the internal DAT system 21 via the switching circuit 30, and digital dubbing is performed from the external CD to the internal DAT. ..

Next, in the case where the reproduction signal of the internal CD and the reproduction signal of the external reproduction device connected to the digital input terminal 25 are continuously digitally dubbed to the DAT tape in the CD-DAT device 2, The dubbing mode changeover switch 233 is set to the external → internal continuous dubbing mode. For example, when an external CD player 1 is connected as shown in FIG. 1, digital dubbing is performed from an external CD to a DAT tape inside the CD-DAT device 2, and the end of the reproduction of this external CD is automatically detected. Then, a series of operations for starting the reproduction of the internal CD and digitally dubbing it to the internal DAT tape are automatically executed.

First, when the external → internal continuous dubbing mode is set, the control unit 24 outputs a control signal to the switching circuits 30 and 31, and switches the signal path to the internal DAT system 21 to the DAI demodulation unit 26 side. At the same time, the output voice path to the speaker 33 is switched to the internal DAT side. In this case, the output sound from the speaker 33 is a monitor sound obtained by directly analogizing the recording signal of the internal DAT system 21. In this state, the external CD operation unit 12 in the external CD player 1 executes the reproduction operation of the external CD, and the internal DAT operation unit 231 in the CD-DAT device 2 puts the internal DAT into the recording pose state. Perform the operation. In addition, a disc is loaded in the internal CD system 22, and an operation for making a reproduction pause is performed by the internal CD operating section 232.

The external CD system 11 receives the instruction signal of the reproduction operation, executes the reproduction operation of the external CD, outputs the reproduced digital audio signal to the DAI modulation section 14, and outputs the reproduced digital audio signal. The control data V corresponding to the corresponding validity flag, the control data U corresponding to the user data, and the control data C corresponding to the channel status are output to the DAI modulator 14, respectively. The DAI demodulation unit 26 in the CD-DAT device 2 demodulates the DAI signal input from the digital input terminal 25 and outputs digital audio data and control data C, U, V.

The control unit 24 receives the DAT recording pause operation instruction signal and sets the internal DAT system 21 to the recording pause state. At this time, the control unit 24 determines the device code, sampling frequency code, copy prohibition code, etc. of the signal currently given through the digital input terminal 25 by the demodulated control data C, and the internal DAT system 21 Is set to the corresponding recording control status.

In this state, the control unit 24 executes the control operation shown in FIG. First, in step S1, it is determined whether the output level of the F / F 29 is the high level of "1". That is, the set output Q of the F / F 29, which is set at the trailing edge of the control data V output from the DAI demodulator 26 and reset when the V is continuously 1 is reproduced by the external CD as shown in FIG. The signal is "1" during the playback, and "0" before and after the playback period.

As described above, this is because when the validity flag V has a data error due to a dropout or the like in the audio sample word of the DAI signal subframe and the data is interpolated and transmitted, or before and after the music reproduction. When data is transmitted in this state, the subframe period is V = 1, and the subframe period during normal music reproduction is V = 0. Therefore, the falling time of the control data V obtained by demodulating the validity flag V, that is, the time when the output of the F / F 29 becomes the high level ("1") is the reproduction start time of the external CD. ..

When the control section 24 detects that the output of the F / F 29 has become high level, the control section 24 releases the recording pause state of the internal DAT system and starts the recording operation (step S2). As a result, the digital audio data of the external CD output from the DAI demodulator 26 is given to the internal DAT system 21 via the switching circuit 30 and digital dubbing is started from the external CD to the internal DAT (step S3). ).

This dubbing state is continued until it is detected in step S4 that the output of the F / F 29 has changed to the low level (“0”).

When the reproduction of the external CD starts to be started, the validity flag V becomes "0" as described above. However, if a data error such as dropout occurs during this reproduction period, V indicates the error occurrence. The period is "1". However, since the continuous 1 detection circuit 28 does not output a detection output unless it becomes "1" continuously for a predetermined number of subframe periods, the F / F29 is not reset. Then, when the reproduction of one disk of the external CD is completed, V becomes "1" thereafter, and the continuous 1 detection circuit 28 outputs a detection output to reset the F / F 29.

When the control unit 24 detects that the output of the F / F 29 has become a low level, it switches the switching circuit 30 to the internal CD system side and sends a control signal to the internal CD system 22 to send the internal CD system 22. Is started to be reproduced (step S5). As a result, the reproduction signal of the internal CD is digitally dubbed into the internal DAT (step S6). The playback state of the internal CD system 22 is controlled by the control unit 24 in the same apparatus, and when the end of playback of the internal CD is detected in step S7, the control unit 24 stops the recording operation of the internal DAT (step S7). S8).

As described above, it is possible to perform the dubbing of the internal CD subsequent to the dubbing of the external CD by using the validity flag V of the DAI format without using a special signal line.

In the above-described embodiment, the validity flag V of the DAI format is used, but in addition to this, it is possible to use TOC data to perform continuous dubbing from outside to inside.

In the case of a CD, the TOC data includes the absolute time data at the beginning of each song, the song numbers of the first / last songs, and the absolute time data at the beginning of the lead-out area, as shown in FIG. The user data U in the DAI format is subcode data in the case of CD / DAT as described above. Therefore, if the TOC data of the external CD is restored based on the control data U obtained by demodulating this user data U, the “lead absolute time data of the lead-out area” in this TOC data and the current It is possible to compare the absolute time data and terminate the reproduction of the external CD at the time of coincidence.

In this case, the control unit 24 executes the control operation shown in FIG. First, in step S9, TOC data read when a disc of an external CD is loaded is read via the DAI format. That is, the disc loading in the external CD player 1 is performed after the external → internal continuous dubbing mode is set, and TOC data automatically read when the external CD is loaded is transferred to the user data in the DAI format via the digital input terminal 25. It is taken in as U and stored in the TOC memory 34.

Next, it is determined that the absolute time data in the subcode of the user data U has become zero or more, and thereby the reproduction of the external CD is started (step S10). Then, the recording of the internal DAT is started (step S11) and the external CD is dubbed (step S12).

Also during this period, the control unit 24 checks the subcode by the control data U output from the DAI demodulation unit 26. Then, the "leading absolute time data in the lead-out area" in the TOC data of the external CD stored in the TOC memory 34 is compared with the current absolute time data in the subcode, and when the coincidence point is reached, the external CD playback end is completed. (Step S13).

Then, in the same manner as in the above-described embodiment, in steps S14 to S17, control operations for starting reproduction of the internal CD, determining reproduction end of the internal CD, and stopping recording of the internal DAT are performed. The control of the switching circuit 30 and the operation of the operation unit are the same as those in the above-described embodiment.

As described above, by using the TOC data and the subcode data of the external CD, the continuous CD of the internal CD can be continuously performed on the external CD.

The type of the recording medium in each of the above-described embodiments is not limited to this, and other changes can be made without departing from the scope of the present invention.

[0062]

[Effect of the device]

 According to the present invention, the detection means automatically detects the end of one reproduction signal, and in response to this detection, the control means starts the output of the other reproduction signal and switches the reproduction signal for recording. By sending to the medium, it becomes possible to automatically and easily perform continuous dubbing automatically without requiring a complicated manual operation.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a connection state between a CD-DAT device and an external CD player.

FIG. 2 is a diagram for explaining a DAI format.

FIG. 3 is a flowchart of the first embodiment of the present invention.

FIG. 4 is a diagram showing an output state of an F / F according to the first embodiment of the present invention.

FIG. 5 is a diagram illustrating TOC data of a CD.

FIG. 6 is a flowchart of a second embodiment of the present invention.

[Explanation of symbols]

 1 External CD Player 13 Digital Output Terminal 14 DAI Modulator 25 Digital Input Terminal 26 DAI Demodulator 21 Internal DAT System 22 Internal CD System 34 TOC Memory

Claims (6)

[Scope of utility model registration request] 1. A first reproducing means for reproducing a first recording medium, a second reproducing means for reproducing a second recording medium, and outputs from the first and second reproducing means. Recording means for recording a reproduction signal; detection means for detecting the end of reproduction by the first reproduction means; reproduction of the second reproduction means when the reproduction end is detected by the detection means, and the first reproduction means A recording control device comprising: control means for controlling the reproduction signal of the second reproduction means to be transmitted to the recording means following the reproduction signal of the reproduction means. 2. The first reproducing means outputs a reproduction signal of the first recording medium and an identification signal indicating whether the reproduction signal is valid or invalid, and the detecting means outputs the identification signal based on the identification signal. 2. The recording control apparatus according to claim 1, wherein the end of reproduction of the first reproduction unit is detected. 3. The first reproduction means outputs, together with the reproduction signal of the first recording medium, position information indicating the current position of the reproduction signal and position information related to the recording end position of the reproduction signal, 2. The recording control device according to claim 1, wherein the detection means detects the end of reproduction of the first reproduction means based on the position information. 4. An input terminal for inputting a digital signal of an external reproducing device, a reproducing means for reproducing a recording medium, a recording means for recording the digital signal and the reproduced signal output from the reproducing means, Detecting means for detecting the end of reproduction of the external reproducing device based on the digital signal; starting reproduction of the reproducing means when the end of reproduction is detected by the detecting means, and transmitting the reproduced signal to the recording means following the digital signal. And a control means for controlling so as to perform the recording control apparatus. 5. The digital signal includes an audio signal reproduced by an external reproduction device and an identification signal indicating whether the reproduction signal is valid or invalid, and the detection means reproduces the first reproduction means based on the identification signal. The recording control device according to claim 4, wherein the end is detected. 6. The digital signal outputs the position information indicating the current position of the reproduced audio signal and the position information related to the end position of the reproduced audio signal, together with the reproduced audio signal from the external reproducing device, and the detecting means. The recording control device according to claim 4, wherein the end of reproduction of the external reproduction device is detected based on the position information.