JPH0778402A - Recording signal division control circuit for disk recording/reproducing device - Google Patents

Abstract

PURPOSE:To facilitate the division operation of a recording signal when a non-signal part is detected by a non-signal part detection circuit by temporarily switching a disk recording/reproducing device to a stoppage state and enabling the division operation of the recording signal. CONSTITUTION:At the time of a reproducing operation state, when a selection switch 13 is closed, the state of performing the division operation of the recording signal is started. In such a state, a non-signal part detection circuit 15 to which a regenerative signal amplified by a reproducing amplifier circuit 5 is inputted becomes an operation state. In such a state, when the non-signal part is detected by the non-signal part detetion circuit 15, a detection signal is outputted to the output terminal 16, and is inputted to a control circuit 11. Thus, the disk recording/reproducing device is switched to the stoppage state temporarily by the control operation of the circuit 11, and the matter that the device is in the division operation enabled state is displayed on a displaying device 17. Then, when a user depresses and closes a division operation switch 14, a music number stored in a memory circuit 18 is revised, and reproducing operation is started.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording / reproducing apparatus capable of recording a signal on a disc, reproducing a signal from the disc, and recording a data signal indicating a signal recording position on the disc. .

[0002]

2. Description of the Related Art Recently, a disc recording / reproducing apparatus capable of not only reproducing a signal recorded on a disc but also repetitively recording the signal on the disc is becoming widespread. Recording information data called TOC data indicating the contents and position of the signal recorded on the disc when the operation of recording the signal on the disc is completed is recorded on the inner circumference of the disc used in such a disc recording / reproducing apparatus. Areas are provided.

[0003]

In such a disc recording / reproducing apparatus, as the information data recorded on the disc, there is data indicating the number of a recording signal such as a music number. When the signal input to be recorded in the disc recording / reproducing apparatus is an analog signal, such a number is recorded in a predetermined area of the disc every time the recording operation is completed. .

That is, in such a device, when three songs are recorded on the disc by one recording operation, information data indicating that a signal of one song is recorded is recorded on the disc. . Therefore, the user writes the information data recorded on the disc as the next song is the second song when the reproduction operation of the first song is finished when reproducing the disc thus recorded. The replacement operation, that is, the recording signal dividing operation is performed.

The present invention is intended to provide a circuit capable of easily performing such a division operation of a recording signal.

[0006]

A recording signal division control circuit of the present invention comprises a control circuit for controlling a recording / reproducing operation of a disk recording / reproducing apparatus, and a selection switch for selecting operation / non-operation of the recording signal dividing operation. It is composed of a no-signal-portion detection circuit that detects the no-signal portion of the signal reproduced from the disc while it is in the operating state when in the recording signal division operation state.

[0007]

According to the present invention, a no-signal portion detection circuit for detecting a no-signal portion of a signal reproduced from a disc is provided, and when the no-signal portion is detected by the no-signal portion detection circuit, the disc recording / reproducing apparatus is suspended. It is possible to switch the state and to divide the recording signal.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The circuit shown in FIG. 1 is an embodiment of the recording signal division control circuit of the present invention. In the figure, reference numeral 1 denotes an optical head for projecting a light beam onto the disk D, which is configured to be in an operating state during a reproducing operation and a recording operation.
Reference numeral 2 denotes a magnetic head that is in an operating state during a recording operation, and is configured to record a signal on the disk D in cooperation with the optical head 1.

A signal reproducing circuit 3 receives a signal reproduced from the optical head 1 and performs a digital signal processing of the signal to demodulate various signals.
Is a D / A converter for receiving a digital signal digitally processed by the signal reproducing circuit 3 and converting the signal into an analog signal. Reference numeral 5 is a reproduced signal converted into an analog signal by the D / A converter 4. A reproduction amplifier circuit for inputting and amplifying the signal, and an output terminal 6 to which the reproduction signal amplified by the reproduction amplifier circuit 5 is applied.

Reference numeral 7 is a recording signal input terminal to which an analog recording signal obtained from a tape recorder or the like is applied, and 8 is a recording signal for inputting the recording signal applied to the recording signal input terminal 7 and amplifying the signal. An amplifier circuit 9 is an A / D converter that receives the analog signal amplified by the recording amplifier circuit 8 and converts the analog signal into a digital signal.

A signal recording circuit 10 receives the signal converted into a digital signal by the A / D converter 9 and digitally processes the signal, and supplies the digitally processed signal to the magnetic head 2. Is configured to record the signal on the disk D.
Reference numeral 11 controls the operation of the optical head 1, the operation of the magnetic head 2 and the operation of an electric motor (not shown) for rotating the disk D based on the signal obtained from the signal reproducing circuit 3 and the operation of the operation switch 12. It is a control circuit which performs various control operations according to the above.

Reference numeral 13 is a selection switch for selecting the operation / non-operation of the operation of dividing the signal recorded on the disk D, and is configured to be closed when the operation of dividing the recording signal is performed. Reference numeral 14 denotes a dividing operation switch that is pressed and closed when the recording signal dividing operation is actually performed.
Reference numeral 15 indicates a non-signal which is in an operating state when the selection switch 13 is in the closed state, that is, in a state where the recording signal is divided, and which uses the reproduction signal output from the reproduction amplifying circuit 5 as an input signal. The unit detection circuit is configured to output a detection signal to the output terminal 16 when the level of the input signal is below a predetermined value for a predetermined time or longer.

Reference numeral 17 denotes a display device whose operation is controlled by the control circuit 11 so as to display a music number and the like on the basis of a signal obtained from the disk D and to indicate that the recording signal can be divided. Is configured. 18
Is a memory circuit whose operation is controlled by the control circuit 11, and is configured so that when the read operation of the record information data recorded on the disc D is performed, the information data is written and stored. There is. Further, when the division operation of the recording signal is performed, the operation of changing the music number stored in the memory circuit 18 is performed. Then, when the stop operation is performed after the division operation of the recording signal, the information data stored in the memory circuit 18 is read and the information data is recorded on the disc D.
The recording is performed by the cooperation of the optical head 1 and the magnetic head 2 in a predetermined area provided in the.

In such a structure, the division operation of the recording signal is performed by closing the selection switch 13 when the disc recording / reproducing apparatus is in the reproducing operation state. When the non-signal portion is detected by, the disc recording / reproducing apparatus is switched to the temporary stop state and the display 17 indicates that the division operation is possible. Then, in such a state, when the operation switch 14 for division is pressed and closed, the operation of changing the music number which is the information data stored in the memory circuit 18 is performed and the operation of releasing the pause state is performed. It is configured.

The recording signal division control circuit of the present invention is constructed as described above. Next, the operation will be described. When the power is turned on while the disc D is mounted in the disc recording / reproducing apparatus, the reading / reproducing operation of the information data recorded in the predetermined area of the disc D is performed and the information data is stored in the memory by the control operation of the control circuit 11. Written to circuit 18.

In this state, when the reproduction switch provided on the operation switch 12 is operated, the control circuit 11
The disc recording / reproducing apparatus is brought into a state of performing the reproducing operation by the control operation of, and the reproducing operation of the signal recorded on the disk D is started.
It is performed based on the information data stored in. The reproduction operation of the signal from the disk D includes the focus control operation and the tracking control operation of the optical head 1, and the disk D
The constant linear velocity control operation is performed. The signal read by the optical head 1 is input to the signal reproduction circuit 3 to perform the demodulation operation of the digital signal, and various data signals included in the digital signal are extracted.

When information data (audio data) is extracted by signal processing by the signal reproduction circuit 3, the information data is subjected to a signal processing operation such as error correction and then D
It is applied to the / A converter 4. The D / A converter 4
After being converted into an analog signal, the digital signal applied to is input to the reproduction amplifier circuit 5 and amplified. Therefore, the user can reproduce and listen to signals such as music recorded on the disc D.

The reproducing operation is performed as described above. Next, the signal recording operation will be described. When power is supplied while the disc D is mounted in the disc recording / reproducing apparatus, the information data recorded on the disc D is read and reproduced as described above, and the information data is controlled by the control circuit 11. By memory circuit 18
Written in.

In this state, when the recording switch provided on the operation switch 12 is operated, the control circuit 11
The control operation of (1) brings the disc recording / reproducing apparatus into a state of performing the recording action, and the recording action of the signal to the disc D is started. Such an action is performed based on the information data recorded in the memory circuit 18. . The signal recording operation on the disk D is performed by performing the focus control operation, the tracking control operation, the magnetic head 2 control operation of the optical head 1, and the constant linear velocity control operation of the disk D. The analog recording signal applied to the recording signal input terminal 7 is input to the recording amplifier circuit 8 and amplified, and then applied to the A / D converter 9. The recording signal applied to the A / D converter 9 is converted into a digital signal and then input to the signal recording circuit 10. The recording signal input to the signal recording circuit 10 is digitally processed and then applied to the magnetic head 2, and recorded on the disk D by the functions of the magnetic head 2 and the optical head 1.

Although the recording operation of the recording signal to the disk D is performed in this manner, the data signal indicating the recording position of the recording signal is written and stored in the memory circuit 18 every time the recording operation is performed. . When a stop operation is performed in the recording operation state, the information data stored in the memory circuit 18 is read and the optical data is stored in a predetermined area provided on the disk D. Recorded by collaboration of two.

As described above, the signal reproducing operation and the recording operation in this embodiment are performed. Next, the recording signal dividing operation which is the gist of the present invention will be described. The division operation of the recording signal is performed by closing the selection switch 13 in the reproduction operation state described above. When the selection switch 13 is closed in the reproducing operation state, the recording signal is divided. In such a state, the no-signal-portion detection circuit 15 to which the reproduction signal amplified by the reproduction amplification circuit 5 is input is activated.

In such a state, the signalless portion detection circuit 1
When the signalless portion is detected by 5, the detection signal is output to the output terminal 16 thereof, and the detection signal is input to the control circuit 11. As a result, by the control operation of the control circuit 11, the disc recording / reproducing apparatus is switched to the temporary stop state and the display 17 indicates that the division operation is possible.

Therefore, the user can recognize that the division operation can be performed by checking the contents displayed on the display unit 17. When the user determines that the division operation should be performed, the division operation switch 14 is pressed and closed. When such an operation is performed, the operation of changing the music number, which is the information data stored in the memory circuit 18, is performed, the paused state is released, and the reproduction operation is started.

When it is determined that the division operation is not necessary in the state where the division operation can be performed, the reproduction switch provided in the operation switch 12 is operated to temporarily stop the operation. Should be canceled. That is, when such an operation is performed, the reproducing operation is started, but in this case, since the division operation is not performed, the operation of changing the information data stored in the memory circuit 18 is not performed.

In this way, the reproduction operation is restarted,
When the next non-signal part is detected by the non-signal part detection circuit 15, the above-mentioned operation is performed, so that the above-mentioned operation is repeated thereafter. When a stop operation is performed while such a reproducing operation is being performed, the information data stored in the memory circuit 18 is read and the optical head 1 is placed in a predetermined area provided on the disc D. And recorded by the cooperation of the magnetic head 2.

Therefore, the information data recorded in the predetermined area of the disc D is the information data after the division operation of the recording signal, that is, the data after the music number changing operation is performed. Subsequent reproduction operations will be performed based on the changed information data. In the present embodiment, the operation of releasing the paused state when it is not necessary to perform the dividing operation when the dividing operation can be performed is performed by operating the reproduction switch, but the dividing operation is performed within a predetermined time. The playback operation may be started when no operation is performed.

[0027]

The recording signal division circuit of the present invention is provided with a no-signal portion detection circuit for detecting the presence / absence of a signal reproduced from a disc, and when the no-signal portion is detected by the no-signal portion detection circuit. Since the disc recording / reproducing apparatus is switched to the temporary stop state and the division operation of the recording signal is enabled, the division operation can be easily performed.

When the division operation is not performed within a predetermined time when the division operation is performed, the pause state is released and the reproduction operation is started. The present invention has a very great effect in improving operability.

[Brief description of drawings]

FIG. 1 is an embodiment of a recording signal division control circuit of the present invention.

[Explanation of symbols]

 1 Optical Head 2 Magnetic Head 3 Signal Reproducing Circuit 10 Signal Recording Circuit 11 Control Circuit 13 Selection Switch 14 Dividing Operation Switch 15 No Signal Detection Circuit 17 Display 18 Memory Circuit

Claims (3)

[Claims] 1. A disc recording / reproducing apparatus capable of performing a signal recording operation on a disc, a signal reproducing operation from the disc, and a recording operation of a data signal indicating a signal recording position on the disc, the recording being performed by the disc recording / reproducing apparatus. A control circuit that controls the playback operation and the operation of the recording signal division operation
In the recording signal division operation state, it is composed of a selection switch for selecting the non-operation and a no-signal section detection circuit for detecting the no-signal section of the signal reproduced from the disc when the recording signal division operation state is activated. A recording signal division control circuit for a disk recording / reproducing device, characterized in that when the no-signal part detecting circuit detects a no-signal part, the disk recording / reproducing device is switched to a suspended state and a recording signal dividing operation is enabled. 2. The recording signal according to claim 1, further comprising a display for displaying that the division operation of the recording signal is possible when the no-signal portion detection circuit detects the no-signal portion. Split control circuit. 3. The recording signal division control circuit according to claim 1, wherein the reproduction operation is started when the division operation is not performed within a predetermined time after the switching to the pause state.