JPH05205394A - Disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To record important information without missing its head part even when the timing of key-in starting record is delayed at the time of recording the information signals such as the digital audio signals by using a disk record ing and reproducing device. CONSTITUTION:The disk recording and reproducing device for recording and reproducing the information signal is provided with a storage device 4 for temporally storing the information signal to be recorded and the key-in device 22 for instructing the start of the recording. At the time of recording the information signal, the information signal to be recorded is stored temporally in the storage device 4, and after the key in starting the record is inputted by reading information stored in the storage device 4 before key-input the recording is started from the information just before the key-input. Further the device is provided with a device 28 for detecting the head of information and at the time of recording the information signal the head of the information signal is detected before and after the key for starting the record is inputted and by reading out the information signal stored in the storage device 4 from the head, the recording of the information signal is started from the head.

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 for recording / reproducing information signals such as digital audio signals on a disc-shaped recording medium.

[0002]

2. Description of the Related Art In recent years, various types of consumer digital audio equipment have been developed. Typical examples thereof are a compact disc player (hereinafter abbreviated as CD) and a digital audio tape recorder (hereinafter abbreviated as DAT). DA is only for CD, but only for playback function
Although T has a characteristic that recording is possible, DAT is disadvantageous in high-speed access as compared with CD in which the recording medium is a disk because the tape is a recording medium.

Further, as a recording / reproducing apparatus using a disk as a recording medium, a radio technology, December 1991, p. 152
~ P. In recent years, the MD system disclosed in the article 155, "Features and Prospects of MD (Mini Disc) System Discussed by Developers", is being developed. The MD is for recording and reproducing an audio signal whose data is compressed on a disk by a magneto-optical method. The audio signal is compressed to 1/5 of the original amount of information, but since the recording / playback rate on the disk is the same as before compression, the signal is read from the disk for 1/5 of the time and the remaining 4/5. In principle, normal music playback is possible even when reading is stopped. In fact, when a 1 Mbit buffer memory is used, normal music reproduction can be continued for 3 seconds even if the signal reading from the disc is stopped.

The MD system will be described below with reference to the drawings. FIG. 11 shows a block configuration of the MD system. In the figure, 1 is an analog audio input terminal,
2 is an analog / digital conversion circuit (A / D), 24 is a digital audio input terminal, 25 is a digital audio interface circuit, 3 is a data compression circuit, 4 is a buffer memory, and 5 is an encoding circuit for generating and adding error correction codes. , 6 is a modulation circuit, 7 is a recording head drive circuit, 8 is a recording magnetic head, 9 is a disk, 10 is an optical pickup, 11 is an RF amplifier, 12 is a demodulation circuit, 13 is an error control circuit, 14 is a buffer memory, 15 Is a data expansion circuit, 16 is a digital / analog conversion circuit (D / A),
Reference numeral 17 is an analog audio output terminal, 26 is a digital audio interface circuit, 27 is a digital audio output terminal, 18 is an address decoder, 19 is a microcomputer, 20 is a servo circuit, 21 is a motor, 22 is a key input, and 23 is a display circuit. ..

First, the operation of recording and reproducing an audio signal will be described with reference to FIG. The analog audio signal supplied to the analog audio input terminal 1 is
It is sampled in the A / D conversion circuit 2 and converted into a digital signal. Alternatively, the digitized audio signal is supplied to the digital audio input terminal 24 by an optical connector or a coaxial cable according to the standard of the digital audio interface, and is supplied to the data compression circuit 3 through the digital audio interface 25. In the data compression circuit 3, so-called voice encoding processing is performed, and the amount of original signal information is reduced to about 1/4 to 1/8. As a voice encoding method, for example, DCT
A transform code such as (Discreat Cosine Transform coding), a code by band division, or a method in which unnecessary information amount is reduced by using these and human auditory characteristics is used.

The compressed signal is temporarily stored in the buffer memory 4. Since the information amount is compressed to 1/4 to 1/8, it is intermittently read at the same signal rate as before compression as shown in FIG. That is, time t0 to t2 in the figure
The signal sequence input to the buffer memory 4 during the period is read from the buffer memory 4 during the time t2 to t3. Similarly, the signal sequences input during times t2 to t4, t4 to t6, and t6 to t8 are times t4 to t5, t6 to t7, and t8, respectively.
Read during t9. Also, time t1 to t2, t3 to t
4, between t5 and t6, and between t7 and t8 (the hatched portion in the figure) is the portion where the reading of the buffer memory 4 is stopped.

The encoding circuit 5 performs an interleaving process for rearranging the order of signals in order to disperse errors during reproduction, and a process for generating and adding an error correction code. EFM (Eight to FourteenModul) so that energy can be concentrated in a frequency band suitable for reproduction and self-clock extraction can be performed during reproduction.
ation) and so on. This signal is recorded on the disk 9 from the recording head 8 via the recording head drive circuit 7. For example, in magneto-optical recording, a new recording is performed by the recording head 8 while erasing the previous magnetism by applying a laser spot to an area to be recorded by an optical pickup to raise the temperature. This recording operation is intermittently performed corresponding to the signal intermittently read from the buffer memory 4. That is, recording is performed by alternately repeating the recording state and the standby state in the paused state.

At the time of reproduction, the signal written on the disk 9 is read by the reflected light of the light emitted from the optical pickup 10 to the disk 9. The optical information is converted into an electric signal by the optical pickup 10 and supplied to the RF amplifier 11. The signal amplified by the RF amplifier 11 is given to the demodulation circuit 12 and demodulated by EFM or the like to restore the original signal sequence. On the other hand, the output of the RF amplifier 11 is also supplied to the address decoder 18. The address decoder 18 reproduces an address signal continuous over the entire circumference of the disk 9 and detects wobbling of the guide groove for the purpose of extracting the information contained in the light spot guide groove pre-engraved on the disk 9. By doing so, we are getting tracking information. This tracking information is supplied to a servo circuit 20 to perform tracking servo so that the optical pickup 10 scans a predetermined guide groove, and a servo that keeps the disk rotation constant at a constant linear velocity so that the undulation of the guide groove has a constant cycle. Can be applied.

The error control circuit 13 corrects errors in the signal sequence by using the error correction code included in the signal sequence restored by the demodulation circuit 12, and the signal sequence rearranged by interleaving processing. Return to the original order. As shown in FIG. 13, the buffer memory 14 temporarily stores the data input intermittently and continuously outputs the data. That is, during the time t0 to t1 in the figure, the buffer memory 1
The signal sequence input at 4 is continuously output between times t1 and t3. Similarly, at times t2 to t3, t4 to t5,
The signal sequences input during t6 to t7 are respectively at time t.
It is continuously output during 3 to t5, t5 to t7, and t7 to t9. Further, the times t1 to t2, t3 to t4, t5 to t6, t7 to t8.
Between (the shaded portion in the drawing) is a portion where writing of the buffer memory 14 is stopped.

The data expansion circuit 15 decodes the compressed data to restore the original time series digital audio signal. The restored signal is output from the analog audio output terminal 17 through the D / A conversion circuit 16 as an analog audio signal, and through the digital audio interface circuit 26 as a digital audio signal conforming to the digital audio interface standard. , Is output from the digital audio output terminal 27. The microcomputer 19 controls various recording / reproducing operations such as the servo circuit 20 and the buffer memory 14 based on the reproduced additional information and the key input 22.

[0011]

The conventional MD system is configured as described above, and when recording a signal such as a voice by key input or the like, the signal of the voice or the like which is to be recorded by the key input timing is recorded. The beginning part may be cut off and important information may be missing, or the silent part may be too long.

The present invention has been made to solve the above problems, and when recording a signal such as a voice, important information may be lost or information may be lost even if the key input timing fails. It is an object of the present invention to provide a disc recording / reproducing apparatus in which a silent portion between the information and information is not too long.

[0013]

DISCLOSURE OF THE INVENTION A disk recording / reproducing apparatus of a first invention according to the present invention, a storage means for temporarily storing an information signal to be recorded, and an instruction to start recording of the recording / reproducing apparatus by a key input or the like. And means.

A disk recording / reproducing apparatus of a second invention according to the present invention comprises a storage means for temporarily storing an information signal to be recorded, a means for instructing the recording / reproducing apparatus to start recording by a key input or the like, and a recording start. Means for presetting time information indicating how long before recording is started.

A disk recording / reproducing apparatus of a third invention according to the present invention comprises a storage means for temporarily storing an information signal to be recorded, a means for instructing the recording / reproducing apparatus to start recording by a key input, etc. And a means for detecting a silent portion.

A disc recording / reproducing apparatus according to a fourth aspect of the present invention comprises a storage means for temporarily storing an information signal to be recorded, a means for instructing the recording / reproducing apparatus to start recording by a key input, etc. It is provided with means for detecting a silent portion and means for presetting time information indicating how long before the start of recording is instructed to start recording.

[0017]

In the disk recording / reproducing apparatus according to the first aspect of the present invention, when the information signal is recorded, the information signal to be recorded is temporarily stored in the storage device. The information signal can be recorded from the front, and the information signal can be recorded without missing even if the key input timing fails.

In the disc recording / reproducing apparatus according to the second aspect of the present invention, when the information signal is recorded, the information signal to be recorded is temporarily stored in the storage device. Therefore, the recording start is instructed by a key input for several seconds. The information signal can be recorded from the front, the time can be set arbitrarily, and the information signal can be recorded without being lost even if the key input timing fails.

According to the disk recording / reproducing apparatus of the third invention of the present invention, when recording the information signal, the information signal to be recorded is temporarily stored in the storage device and the beginning of the information signal is detected. It is possible to record from the beginning of the information signal several seconds before the recording start is instructed by input etc.
Even if the key input timing fails, the information signal can be recorded from the beginning without loss.

In the disc recording / reproducing apparatus of the fourth aspect of the present invention, when the information signal is recorded, the information signal to be recorded is temporarily stored in the storage device and the beginning of the information signal is detected. It is possible to record from several seconds before the beginning of the information signal before and after the recording start is instructed by input etc., the time can be set arbitrarily, and the information signal is lost even if the key input timing fails Can be recorded without.

[0021]

【Example】

Example 1. FIG. 1 is a diagram showing the configuration of an embodiment of a disc recording / reproducing apparatus of the first invention according to the present invention. In the figure, 1 to 18 and 20 to 27 are the same as the conventional MD system shown in FIG. Reference numeral 28 is a microcomputer for designating an address at which the reading of the information signal stored in the buffer memory is started after recording is started by a key input or the like and for controlling other recording / reproduction.

FIG. 2 is a diagram showing the write / read timing of the buffer memory 4 used in the disk recording / reproducing apparatus according to this embodiment. The operation of the buffer memory 4 when recording an information signal using the disc recording / reproducing apparatus according to the present invention will be described below with reference to FIG. For example, if the capacity of the buffer memory 4 is the data capacity of a second of the information signal and a recording start instruction is given from the key input 22 at time t2, the buffer memory 4 stores the time t0-
The information signal for a second input at t2 is stored.
Here, the buffer memory 4 can start reading the information signal and start recording from the information input at time t0 a seconds before the recording start instruction is issued. After that, as in the conventional example, the information signals input during the times t2 to t4, t4 to t6, and t6 to t8 are t4 to t5, t6 to t7, respectively.
It is read during t8 to t9. As described above, the recording of the information signal can be started from the information signal a seconds before the time t2 when the key is input. In the figure, the shaded portion is the portion where the information signal is written and read.

Here, in this embodiment, the key input a
Recording was started from the information signal a second before, but any time may be used as long as it does not exceed the number of seconds (a seconds) that can be stored in the buffer memory 4. For example, 1 in the buffer memory 4
When a memory having a capacity of Mbit is used, it is possible to record from the information signal about 3 seconds before the maximum.

Example 2. FIG. 3 is a diagram showing the configuration of an embodiment of a disc recording / reproducing apparatus of the second invention according to the present invention. In the figure, 1 to 18 and 20 to 28 are the same as those of the embodiment of the disk recording / reproducing apparatus according to the first invention shown in FIG. Reference numeral 29 denotes a time information setting device, which is a device for setting how long before the recording start of the information signal is started by the key input 22.

FIG. 4 is a diagram showing the write / read timing of the buffer memory 4 used in the disk recording / reproducing apparatus according to this embodiment. The operation of the buffer memory 4 when recording an information signal using the disc recording / reproducing apparatus according to the present invention will be described below with reference to FIG. For example, the capacity of the buffer memory 4 is the data capacity for a second of the information signal, and when the recording is started from the information signal b seconds before the recording start instruction comes, the time information setting device 29 sets it.
If an instruction to start recording is given from the key input 22 at time t1, the buffer memory 4 receives the key input 2 at time t2.
The information signal for a seconds input from b seconds before (time t0) to time t2 when the recording start instruction is given by 2 is stored. At this time, the buffer memory 4 starts reading the information signal, and the time t before b seconds before the recording start instruction is given.
It can be recorded from the information entered in 0. After that, similarly to the conventional example, the times t2 to t4, t4 to t6, and t6 to.
The information signal input during t8 is the time t4 to t, respectively.
It is read during 5, t6 to t7 and t8 to t9. As described above, the recording of the information signal can be started from the information signal of the time b seconds set by the time information setting device 29 from the time t1 when the key is input. In the figure, the shaded area is the area where the information signal is written and read.

Example 3. FIG. 5 is a diagram showing the configuration of an embodiment of a disc recording / reproducing apparatus of the third invention according to the present invention. In the figure, 1 to 18 and 20 to 28 are the same as those of the embodiment of the disk recording / reproducing apparatus according to the first invention shown in FIG. Reference numeral 30 denotes a music piece detecting circuit, which is a circuit for detecting a silent portion or a music piece portion having a very low level of the input information signal.

FIG. 6 is a diagram showing the write / read timing of the buffer memory 4 used in the disk recording / reproducing apparatus according to this embodiment. The operation of the buffer memory 4 when recording an information signal using the disc recording / reproducing apparatus according to the present invention will be described below with reference to FIG. For example, the capacity of the buffer memory 4 is the data capacity of the information signal for a second, the inter-track detection circuit 30 detects that the information signal has started from time t0, and starts recording from key input 22 at time t1. If an instruction is given, time t
At the beginning of the information signal in the buffer memory 4 at 2 (time t0)
The information signals for a seconds input from the time to the time t2 are stored. Here, the buffer memory 4 can start reading the information signal and start reading from the information input at the time t0, which is the head of the information signal, before the recording start instruction is given. After that, as in the conventional example, the information signals input during the times t2 to t4, t4 to t6 and t6 to t8 are respectively t4 to t5, t6 to t7 and t8.
Read during t9. As described above, the information signal can be recorded from the beginning of the information signal within a second before the time t1 when the key is input. In the figure, the shaded portion is the portion where the information signal is written and read.

In FIG. 6, if the signal input section is already a seconds before the recording start instruction is given by the key input 22,
Since the head portion of the information signal has not been left in the buffer memory 4 already and it is not possible to record from the head of the information signal, it is possible to record the information signal from a second before the recording start instruction is issued.

FIG. 7 is a diagram showing another example of the write / read timing of the buffer memory 4 used in the disc recording / reproducing apparatus according to this embodiment, where there is no signal portion for a second before the recording start instruction comes. , Shows the timing when the information signal is first started c seconds after the recording start instruction is received. For example, the capacity of the buffer memory 4 is the data capacity of the information signal for a second, and the inter-track detection circuit 30 detects that the information signal has started at time t0, and starts recording from the key input 22 at time t1. If the instruction is issued, the recording is not started at time t1 because the information signal has not started yet. The information signal starts c seconds later at time t0, and the information signal for a second (time t0 to t2) is stored in the buffer memory 4 at time t2, so that reading is started from the beginning of the information signal at time t2. .. After that, as in the conventional example, the information signals input during the times t2 to t4 and t4 to t6 are respectively t4 to t5 and t6.
It is read during t7. As described above, the information signal can be recorded from the beginning of the information signal c seconds after the time t1 when the key is input. In the figure, the shaded portion is the portion where the information signal is written and read.

Here, in the examples of FIGS. 6 and 7, the reading of the buffer memory 4 is started from the beginning of the information signal.
If the number of seconds (a seconds) that can be recorded in the buffer memory 4 is not exceeded, recording may be started from an information signal several seconds before the beginning of the information signal.

Example 4. FIG. 8 is a diagram showing the configuration of an embodiment of a disc recording / reproducing apparatus of the fourth invention according to the present invention. In the figure, 1-18, 20-28, 30 are
The description is omitted because it is the same as the embodiment of the disk recording / reproducing apparatus according to the third invention shown in FIG. Reference numeral 29 denotes a time information setting device, which is a device for setting a time for starting recording of the information signal from the beginning of the information signal by the key input 22.

FIG. 9 is a diagram showing the write / read timing of the buffer memory 4 used in the disk recording / reproducing apparatus according to this embodiment. The operation of the buffer memory 4 when an information signal is recorded using the disc recording / reproducing apparatus according to the present invention will be described below with reference to FIG. For example, the capacity of the buffer memory 4 is a data capacity of a second of the information signal, and when recording is started from the information signal of b seconds before the beginning of the information signal, the time information setting device 29 sets it, and the inter-track detection circuit 30. If it is detected that the information signal has started at time t10 and the recording input is instructed from the key input 22 at time t1, the buffer memory 4 will be stored in the buffer memory 4 at time t2 b seconds before the beginning of the information signal. The information signal for a seconds input from t0) to time t2 is stored. Here, the buffer memory 4 can start reading the information signal and start reading from the information input at time t0, which is b seconds before the beginning of the information signal, before the recording start instruction comes. After that, like the conventional example,
The information signals input during the times t2 to t4, t4 to t6 and t6 to t8 are respectively t4 to t5, t6 to t7 and t8 to t9.
Be read during. As described above, the recording of the information signal can be started from the beginning of the information signal before the time t1 when the key is input, from the time b seconds set by the time information setting device 29. In the figure, the shaded portion is the portion where the information signal is written and read.

FIG. 10 is a diagram showing another example of the write / read timing of the buffer memory 4 used in the disc recording / reproducing apparatus according to this embodiment, where there is no signal for a second before the recording start instruction comes. , Shows the timing when the information signal is started for the first time b + c seconds after the recording start instruction is received. For example, the capacity of the buffer memory 4 is the data capacity of the information signal for a second, the inter-track detection circuit 30 detects that the information signal has started at time t10, and starts recording from the key input 22 at time t1. If the instruction is issued, the recording is not started at time t1 because the information signal has not started yet. Time t after b + c seconds
Since the information signal starts at 10 and the information signal for a seconds (time t0 to t2) from b seconds before the information signal starts at time t2 is stored in the buffer memory 4, it starts from the beginning of the information signal at time t2. Reading is started from the information b seconds before. After that, as in the conventional example, the times t2 to t4 and t4 to
The information signal input during t6 is the time t4 to t, respectively.
5, read during t6 to t7. As described above,
The information signal can be recorded from the beginning of the information signal c seconds after the time t1 when the key is input and the information signal b seconds before. In the figure, the shaded portion is the portion where the information signal is written and read.

Here, in the first to fourth embodiments, when the buffer memory 4 is read, for example, the data written at t0 to t2 was immediately read at t2 to t3, but actually t2 to t4.
It does not matter where it is read in between.

[0035]

As described above, according to the first aspect of the invention, when the information signal is recorded, the information signal to be recorded is temporarily stored in the storage device, so that the start of recording is instructed by key input or the like. The information signal can be recorded from several seconds before
Even if the key input timing fails, the information signal can be recorded without being lost.

According to the second invention, when recording the information signal, the information signal to be recorded is temporarily stored in the storage device,
Since the time to start recording can be set arbitrarily,
The information signal can be recorded from a few seconds before the start of recording is instructed by key input, etc., and the time can be set arbitrarily, and even if the key input timing fails, the information signal will not be lost There is an effect that a signal can be recorded.

Further, according to the third invention, when the information signal is recorded, the information signal to be recorded is temporarily stored in the storage device,
Since the beginning of the information signal can be detected, it is possible to record from the beginning of the information signal before and after the start of recording is instructed by key input, etc., and the information signal is lost even if the key input timing fails. Instead, there is an effect that information can be recorded from the beginning.

According to the fourth aspect of the invention, when the information signal is recorded, the information signal to be recorded is temporarily stored in the storage device,
Since the beginning of the information signal can be detected and the time to start recording can be set arbitrarily, it is possible to record the information signal several seconds before the beginning of the information signal before and after the start of recording is instructed by key input etc. Therefore, there is an effect that the time can be set arbitrarily and the information signal can be recorded without being lost even if the key input timing fails.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a disk recording / reproducing apparatus of a first invention.

FIG. 2 is a write / read timing diagram of a buffer memory 4 used in this embodiment.

FIG. 3 is a configuration diagram of an embodiment of a disc recording / reproducing apparatus of the second invention.

FIG. 4 is a write / read timing diagram of a buffer memory 4 used in this embodiment.

FIG. 5 is a block diagram of an embodiment of a disk recording / reproducing apparatus of a third invention.

FIG. 6 is a diagram showing a first example of write / read timing of the buffer memory 4 used in this embodiment.

FIG. 7 is a diagram showing a second example of write / read timing of the buffer memory 4 used in this embodiment.

FIG. 8 is a block diagram of an embodiment of a disk recording / reproducing apparatus of a fourth invention.

FIG. 9 is a diagram showing a first example of write / read timing of the buffer memory 4 used in this embodiment.

FIG. 10 is a diagram showing a second example of the write / read timing of the buffer memory 4 used in this embodiment.

FIG. 11 is a configuration diagram of a conventional MD.

FIG. 12 is a write / read timing diagram of the buffer memory 4 on the recording side used in the conventional MD.

FIG. 13 is a write / read timing diagram of the buffer memory 14 on the reproducing side used in the conventional MD.

[Explanation of symbols]

 1 analog audio input terminal 2 analog / digital conversion circuit 3 data compression circuit 4 buffer memory 5 encoding circuit for generating and adding error correction code 6 modulation circuit 7 recording head drive circuit 8 recording magnetic head 9 disk 10 optical pickup 11 RF amplifier 12 Demodulation circuit 13 Error control circuit 14 Buffer memory 15 Data expansion circuit 16 Digital / analog conversion circuit 17 Analog audio output terminal 18 Address decoder 20 Servo circuit 21 Motor 22 Key input 23 Display circuit 24 Digital audio input terminal 25 Digital audio interface circuit 26 Digital Audio interface circuit 27 Digital audio output terminal 28 Microcomputer 29 Time information setting device 30 Song interval detection circuit

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[Procedure amendment]

[Submission date] June 8, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

The MD system will be described below with reference to the drawings. FIG. 11 shows a block configuration of the MD system. In the figure, 1 is an analog audio input terminal,
2 is an analog / digital conversion circuit (A / D), 24 is a digital audio input terminal, 25 is a digital audio interface circuit, 3 is a data compression circuit, 4 is a buffer memory, and 5 is an encoding circuit for generating and adding error correction codes. , the modulation circuit 6, the recording head driving circuit 7, 8 <br/> Symbol Rokuhe head, disk, 10 optical pickup 9,
11 is an RF amplifier, 12 is a demodulation circuit, 13 is an error control circuit, 14 is a buffer memory, 15 is a data expansion circuit, 1
6 digital / analog converter (D / A), an analog audio output terminal 17, a digital audio interface circuit 26, the digital audio output terminal 27, 18 is an address decoder, 19 micro co <br/> down computer , 20 is a servo circuit, 21 is a motor, 22 is a key input, and 23 is a display circuit.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Reference Numerals] 1 analog audio input terminal 2 analog / digital conversion circuit 3 the data compression circuit 4 buffer memory 5 coding circuit 6 modulating circuit 7 printhead driving circuit 8 Symbol Rokuhe head 9 disc to generate adds an error correction code 10 optical pickup 11 RF amplifier 12 demodulation circuit 13 error control circuit 14 buffer memory 15 data expansion circuit 16 digital / analog conversion circuit 17 analog audio output terminal 18 address decoder 20 servo circuit 21 motor 22 key input 23 display circuit 24 digital audio input terminal 25 Digital Audio Interface Circuit 26 Digital Audio Interface Circuit 27 Digital Audio Output Terminal 28 Microcomputer 29 Time Information Setting Device 30 Track Detection Time Road

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

Claims (4)

[Claims] 1. A disk recording / reproducing apparatus for recording / reproducing an information signal such as a digital audio signal on / from a disk-shaped recording medium, and a storage means for temporarily storing the information signal to be recorded, and a recording / reproducing apparatus of the recording / reproducing apparatus by a key input or the like. And a means for instructing the start of recording, when recording the information signal, among the information signals stored in the storage means, from the information signal preceding by a predetermined time immediately before the start of the recording is instructed. A disc recording / reproducing device characterized by being capable of recording and recording information signals without being truncated. 2. A disc recording / reproducing apparatus for recording / reproducing an information signal such as a digital audio signal on / from a disc-shaped recording medium, and a storage means for temporarily storing the information signal to be recorded and a recording / reproducing apparatus for the recording / reproducing apparatus by key input or the like. A means for instructing the start of recording and a means for presetting time information of how long before the start of the recording is instructed are provided, and when the information signal is recorded, it is stored in the storage means. Among the information signals being recorded, it is possible to record from the information signal before the time set by the time information setting means immediately before the start of the recording is instructed so that the information signal can be recorded without being cut off. A disc recording / reproducing apparatus characterized by being set. 3. A disk recording / reproducing apparatus for recording / reproducing an information signal such as a digital audio signal to / from a disk-shaped recording medium, and a storage means for temporarily storing the information signal to be recorded, and a recording / reproducing apparatus for the recording / reproducing apparatus by key input or the like. A means for instructing the start of recording and a means for detecting a silent portion of the information signal are provided, and when the information signal is recorded, the start of recording is instructed among the information signals stored in the storage means. Disc recording / reproducing, characterized in that the head of the information signal is detected before and after the silent portion detecting means, and the head of the detected information signal can be recorded, and the information signal can be recorded without being cut off. apparatus. 4. A disk recording / reproducing apparatus for recording / reproducing an information signal such as a digital audio signal to / from a disk-shaped recording medium, a storage means for temporarily storing the information signal to be recorded, and a recording / reproducing apparatus for the recording / reproducing apparatus by a key input or the like. Information recording means is provided, means for instructing the start of recording, means for detecting a silent portion of the information signal, and means for presetting time information indicating how long before the start of recording the recording is started. When recording a signal, of the information signals stored in the storage means, the head of the information signal is detected by the silent portion detection means before and after the start of recording is instructed, and the head of the detected information signal is detected. It is possible to record from the information signal before the time set by the time information setting means, so that the information signal can be recorded without being cut off. A disk recording / reproducing apparatus characterized by the above.