JPH0778415A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce loss in recording time for dubbing by providing a speed control means by which a storing speed to a re-storing means is made variable based on the detection result of a means for detecting a storage quantity on a reproducing side and a recording side. CONSTITUTION:A storage quantity in a shock proof memory 15 on a reproducing side is detected by a controller 16. If the storage quantity in the memory 15 is less than the usual stored quantity C', an instruction is generated by a microcomputer 8 to a frequency converter circuit 9 and a reproducing speed is increased. Then, an incompressible reproducing signal stored in the memory 15 is compressed in a recording reproducing part and stored in a memory 5. Then, the storage quantity of the memory 5 is detected by a controller 4. In this instance, if the storage quantity of the memory 5 becomes larger than the usual stored quantity C, an instruction to the circuit 9 is generated by the controller 8, lowering the frequency of a servo circuit 19 to reduce the reproducing speed. After that, more than the stored quantity C' inclusive and up to the maximum stored quantity B' are stored. Then, after the stored quantity of the memory 15 becomes B', an instruction to the circuit 9 is generated by the microcomputer 8, raising the frequency of a servo circuit 12 and increasing the recording speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention compresses a non-compressed reproduction signal of a reproduction medium reproduced by a reproduction section in a recording section and stores the compression information in the recording signal storage means and in the recording signal storage means. The present invention relates to an information recording / reproducing apparatus such as a digital cassette tape or a CD for reading a stored memory signal and recording it on a recording medium.

[0002]

2. Description of the Related Art Conventionally, information recording / reproduction of a digital system such as a digital cassette tape or a CD in which two information media can be mounted and one information medium can be reproduced while being recorded on another information medium. The device is commercially available.

When performing the above-mentioned dubbing in the above information recording / reproducing apparatus, as shown in FIG. 7, the uncompressed digital data recorded in the reproducing medium 22 is reproduced by the reproducing circuit 18 of the reproducing section 40 and the decoder / decoder. It is sent to the audio compression / expansion circuit 6 of the recording unit 30 via the signal processing circuit 17, the D / A converter 14, the output terminal 26, and the input terminal 24. Then, after being compressed by the audio compression / expansion circuit 6, the shock proof memory controller 4 stores a fixed amount of compressed data in the recording side shock proof memory 5 as a recording signal storage means, and if a fixed amount can be stored, a shock is generated. The proof memory controller 4 reads out from the recording-side shock proof memory 5 and then records it on the recording medium 1 via the recording / reproducing circuit 2 at the same speed as the audio reproducing speed. When recording, the compressed data of the recording-side shock proof memory 5 is recorded on the recording medium 1, and when an empty area is created in the recording-side shock proof memory 5, the compressed data is sequentially stored in the recording-side shock proof memory 5, and thereafter. By repeating the above process, all information on the reproduction medium 22 is dubbed onto the recording medium 1.

[0004]

However, in the above-mentioned conventional information recording / reproducing apparatus, when the amount of data to be stored in the recording-side shock proof memory 5 decreases due to an error or the like on the reproducing side during dubbing, recording is performed. On the side, the recording-side shock proof memory 5 waits until a certain amount of data is stored in the recording-side shock proof memory 5, so that there is a problem in that a loss occurs in the recording time.

In the above problem, the higher the speed of data transfer, the more accesses and track jumps occur, which results in frequent recording and interruption on the recording medium 1 and the probability of access failure. Since this is higher, the loss of recording time tends to increase.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide an information recording / reproducing apparatus capable of reducing loss of recording time during dubbing.

[0007]

In order to solve the above-mentioned problems, the information recording / reproducing apparatus of the present invention compresses the non-compressed reproduction signal of the reproduction medium reproduced by the reproducing unit in the recording unit. A recording information recording / reproducing apparatus for storing the compressed information in the recording signal storage means and for reading the storage signal stored in the recording signal storage means and recording it on a recording medium,
The reproduction section includes a reproduction signal storage unit for storing an uncompressed reproduction signal of a reproduction medium, a reproduction side storage amount detection unit for detecting a storage amount in the reproduction signal storage unit, and a reproduction speed changing unit for changing a reproduction speed. And a recording side storage amount detecting means for detecting the storage amount in the recording signal storage means and a recording speed varying means for varying the recording speed, while the recording section is provided with the reproducing side storage amount detecting means. And a speed control for changing the reproduction speed and the recording speed by the reproduction speed changing means and the recording speed changing means so as to change the storage speed of the reproduction signal storage means and the recording signal storage means based on the detection result of the recording side storage amount detection means. It is characterized in that means are provided.

In order to solve the above-mentioned problems, the information recording / reproducing apparatus according to a second aspect of the present invention is the information recording / reproducing apparatus according to the first aspect, wherein the reproducing section detects a read error of the non-compressed reproduced signal. Error detection means and a reading error detected by the error detection means at the time of high-speed dubbing, the reproduction speed of the reproduction medium is reduced until the uncompressed reproduction signal becomes readable, while the reading error is read. It is characterized in that a speed adjusting means for returning to the reproduction speed at the time of the original high-speed dubbing is provided.

[0009]

According to the structure of claim 1, when dubbing, the uncompressed reproduction signal of the reproduction medium reproduced by the reproducing section is stored in the reproduction signal storage means. At this time, the storage amount in the reproduction signal storage means is detected by the reproduction side storage amount detection means. Then, when the storage amount in the reproduction signal storage unit is smaller than the normal storage amount due to, for example, a read error, the speed control unit instructs the reproduction speed changing unit to increase the reproduction speed so that the waiting time does not increase. Let's make it faster than the normal storage capacity.

Next, the non-compressed reproduction signal stored in the reproduction signal storage means is compressed in the recording section, and the compression information is stored in the recording signal storage means. Then, the storage amount of the recording signal storage unit is detected by the storage-side storage amount detection unit. Here, for example, when the compressed information in the recording signal storage means cannot be recorded due to disturbance or the like,
The storage amount of the recording signal storage means is larger than the normal storage amount. At this time, the speed control means first instructs the reproduction speed changing means to decrease the reproduction speed, and then stores the normal storage amount or more. As a result, even if recording is not possible, it is possible to increase the storage amount of the reproduction side storage amount detecting means while gaining time.

Then, after the storage amount of the storage amount detecting means exceeds the normal storage amount, the speed control means instructs the recording speed varying means to increase the recording speed, whereby the lost time can be recovered as much as possible. .

As a result, it is possible to reduce the recording time loss during dubbing.

According to the structure of claim 2, for example,
When reading the recorded information on the playback medium at high speed,
When the error rate deteriorates due to scratches or the like and reading becomes impossible, the error detection means detects a reading error. Based on the detection of reading error by this error detection means,
The speed adjusting means reduces the reproduction speed of the reproduction medium until the uncompressed reproduction signal can be read. Further, the speed adjusting means restores the original reproduction speed at the time of high-speed dubbing after the reading of the reading error is completed.

As a result, if the recorded information on the reproducing medium cannot be read at a high speed, the speed is reduced until it can be read, and after the reading, the reproducing speed at the original high-speed dubbing is reached. It is possible to avoid that the device remains unreadable without being read.

Therefore, it is possible to reduce the recording time loss during dubbing.

[0016]

【Example】

[Embodiment 1] One embodiment of the present invention is shown in FIGS.
The explanation is based on the following.

An information recording / reproducing apparatus such as a digital cassette tape or a CD (Compact Disc) according to the present embodiment can accommodate two information media and serves as a recording unit shown on the left side of the one-dot chain line in FIG. The recording / reproducing unit 30 can be roughly divided into a reproducing unit 40 shown on the right side of the one-dot chain line in FIG.

The recording / reproducing unit 30 is capable of recording and reproducing information, and has a recording medium 1, a recording / reproducing circuit 2, an encoder / decoder signal processing circuit 3, a shock proof memory controller (hereinafter referred to as "recording / reproducing memory"). 4, a recording side shock proof memory 5, an audio compression / expansion circuit 6, a D / A / A / D converter 7, a system control microcomputer 8, a frequency conversion circuit 9, a power ON / OFF circuit 10, and a drive motor 11. And a servo circuit 12 and a driver circuit 13.

When recording is performed by the recording / reproducing unit 30, the analog data is converted into digital data by the D / A / A / D converter 7 and then compressed by the audio compression / expansion circuit 6, and thereafter, each data is compressed. The compressed information is recorded on the recording medium 1 via a circuit or the like, and the information on the recording area of the recording medium 1 is stored in the recording-side shock proof memory 5 as a recording signal storage means. That is, when recording is performed by the recording / reproducing unit 30, the analog audio signal input from the audio input terminal 24 is D / A · A /
The audio compression / expansion circuit 6 is sent to the D converter 7, and the A / D converter converts the analog signal into a digital signal.
Sent to. The audio compression / expansion circuit 6 compresses the data sent by the audio compression circuit and sends it to the recording / reproducing memory controller 4 as the recording side storage amount detecting means.

The recording / reproducing memory controller 4 writes the transmitted signal in the recording-side shock proof memory 5.
Further, the recording / reproducing memory controller 4 reads out the data stored in the recording-side shock proof memory 5 and sends it to the encoder / decoder signal processing circuit 3, where the encoder / decoder signal processing circuit 3 performs modulation and error correction code conversion. Add, etc.

The system control microcomputer 8 controls the recording / reproducing memory controller 4 to control the TOC (Table Of Co) stored in the recording side shock proof memory 5.
ntents) recognize the recordable area of the recording medium 1 from the information,
The servo circuit 12 is controlled to search the recordable area. When the search for the recordable area is completed, the encoder / decoder signal processing circuit 3 and the recording / reproducing circuit 2 are driven under the control of the system control microcomputer 8 to drive the recording medium 1
Record.

When the recording is completed, the system control microcomputer 8 controls the recording / reproducing memory controller 4 to store the TO in the recording side shock proof memory 5.
The data recorded on the recording medium 1 is managed by rewriting the C information and using it as the latest TOC information.

On the other hand, the reproducing section 40 includes a reproducing medium 22, a reproducing circuit 18, a decoder / signal processing circuit 17, a shock proof memory controller (hereinafter referred to as "reproducing memory controller") 16, a reproducing side shock proof memory 15, and A D / A converter 14, a system control microcomputer 8, a servo circuit 19, a driver circuit 20, a drive motor 21, a power ON / OFF circuit 10 and a frequency conversion circuit 9 are provided.

The system control microcomputer 8,
The frequency conversion circuit 9 and the power ON / OFF circuit 10 are
The recording / playback unit 30 is shared.

When the reproduction section 40 is used for reproduction,
The reproduction medium 22 is rotationally driven by the drive motor 21 driven by the driver circuit 20, and the uncompressed audio data recorded on the reproduction medium 22 is read by the reproduction circuit 18. The audio data read by the reproducing circuit 18 is sent to the decoder / signal processing circuit 17.
Further, a servo control signal such as a tracking error signal is generated from the audio data read by the reproducing circuit 18 and is output to the servo circuit 19. The servo circuit 19 controls the driver circuit 20 so as to apply servo for tracking, a drive motor, etc. by the servo control signal from the reproducing circuit 18 and the control signal from the system control microcomputer 8. And
The driver circuit 20 drives the drive motor 21 by the control signal from the servo circuit 19. The decoder / signal processing circuit 17 demodulates the signal amplified by the reproducing circuit 18, further performs signal processing such as error correction, and sends it to the reproducing memory controller 16 as a reproducing side storage amount detecting means.

The reproduction memory controller 16 writes the signal sent from the decoder / signal processing circuit 17 into the reproduction side shock proof memory 15 as reproduction signal storage means. The reproduction-side shock proof memory 15 is provided with an area for storing TOC information in addition to audio, and as soon as the reproduction medium 22 is attached to the apparatus, the TO recorded on the reproduction medium 22 is recorded in the same path as the audio data.
The C information is secured in a predetermined area of the reproduction side shock proof memory 15. Further, the reproduction memory controller 16 reads out the required TOC information from the reproduction-side shock proof memory 15 in response to the request of the system control microcomputer 8 and then the system control microcomputer 8
Send to. The system control microcomputer 8 controls this system based on the TOC information and reads out necessary data from the reproduction medium 22. The reproduction memory controller 16 reads the audio data stored in the reproduction-side shock proof memory 15 and sends it to the D / A converter 14. The D / A converter 14 converts the sent digital signal into an analog signal to generate a voice signal. And
This audio signal is output as audio from the output terminal 26.

The system control microcomputer 8 also reproduces the reproduction memory controller 16 and the recording-side shock proof memory 5 based on the storage amount detection results of the reproduction memory controller 16 and the recording / reproduction memory controller 4.
The frequency conversion circuit 9 has a function as speed control means for changing the reproduction speed and the recording speed in order to change the storage speed.

Next, the operations of the recording / reproducing unit 30 and the reproducing unit 40 during editing will be described below. In addition, the editing means the reproducing unit 40.
The recording medium 1 is recorded on the recording medium 1 by the recording / reproducing unit 30 while the reproduction medium 22 is reproduced at 1. The editing methods include normal dubbing at a normal speed and high-speed dubbing at a high speed. Hereinafter, normal dubbing and high-speed dubbing will be described in order.

At the time of normal dubbing, as shown in FIG.
First, the reproduction circuit 18 sends the data recorded on the reproduction medium 22 to the read decoder / signal processing circuit 17. Then, the decoder / signal processing circuit 17 performs signal processing such as demodulation and error correction, and temporarily stores it in the reproduction side shock proof memory 15. The reproduction memory controller 16 sends the data stored in the reproduction-side shock proof memory 15 to the audio compression circuit in the audio compression / expansion circuit 6 of the recording / reproduction unit 30 through the path of arrow A. Next, the audio compression circuit compresses the digital data, stores it in the recording-side shock proof memory 5, and when it is stored in a fixed amount, sends it to the encoder signal processing circuit in the encoder / decoder signal processing circuit 3 by the recording / playback memory controller 4 to modulate the modulated audio. The expansion circuit 6 and the error correction code are added, and the recording / reproducing circuit 2 records on the recording medium 1.

Next, in the case of high-speed dubbing, the system control microcomputer 8 issues a high-speed dubbing instruction to the frequency conversion circuit 9 as the reproduction speed changing means and the recording speed changing means, and the frequency conversion circuit 9 changes the frequency to, for example, 8 MHz. To 16MHz, and servo circuit 19.1
Send to 2. In the servo circuits 19 and 12, the driver circuit 2
0.13 is driven, and the read medium 22 and the recording medium 1 are read at high speed by the drive motors 21 and 11,
Make a record.

The editing path is the same as that for normal dubbing.
It is performed in the direction of arrow A. At this time, the system control microcomputer 8 controls the reproduction-side shock proof memory 15 and the recording-side shock proof memory 5, respectively. Here, shock proof memory 5 ・ 15
As shown in FIGS. 2 (a) and 2 (b), data can be stored up to the maximum storage amount B · B ′ indicated by the broken line, and normally, the normal storage amount C · indicated by the solid line is indicated.
Data is stored up to C '. Then, as shown in FIG. 2B, for example, the reproduction side shock proof memory 1
When the data amount of 5 is reduced to the reduced storage amount D ′ indicated by the one-dot chain line due to a disturbance or the like, the recording-side shock proof memory 5 is also reduced in storage as shown by the one-dot chain line in FIG. The amount is reduced to D.

The system control microcomputer 8
When it detects that the storage capacity of the shock proof memory 15.5 has decreased, it issues a command to the frequency conversion circuit 9 to increase the frequency. The frequency conversion circuit 9 sends the converted frequency to the servo circuit 19 to rotate the drive motor 21 at high speed via the driver circuit 20, and the normal storage amount C ′.
And the frequency of the reproducing unit 40 is controlled until the storage capacity of the recording-side shock proof memory 5 reaches the normal storage amount C while the frequency of the recording / reproducing unit 30 remains the same as before. . On the other hand, when the data capacity of the recording-side shock proof memory 5 of the recording / reproducing unit 30 cannot be recorded due to disturbance or the like, the system control microcomputer 8 sends the frequency of the reproducing unit 40 to the frequency conversion circuit 9. Send a command to reduce the maximum storage amount B '
Store until. An instruction to increase the frequency is sent to the recording / reproducing unit 30 to perform recording at high speed and control so that the normal storage capacity C is reached. Data is transferred from the reproducing unit 40 to the recording-side shock proof memory 5 of the recording / reproducing unit 30 even while recording is not possible, and the maximum storage amount B is stored.

The control of the storage amount of the shock proof memory 15.5 during the above dubbing will be described in detail below with reference to the flowcharts of FIGS. 3 and 4.

First, as shown in FIG. 3, after the reproduction start point on the reproduction medium 22 is searched, it is temporarily stopped (S
1) It is determined whether or not the reproduction preparation is OK (S2). S2
If the reproduction preparation is not OK, the process returns to S1 and the search for the reproduction start point is repeated.

When the reproduction preparation is OK in S2, the recording start point on the recording medium 1 is searched, and then the recording start point is temporarily stopped (S3). Next, it is judged whether or not the recording preparation is OK (S4). If the recording preparation is not OK in S4, the process returns to S3 and the search for the recording start point is repeated. Then S
When the recording preparation is OK in 4, the frequency setting is performed so that the drive motor 21 for the reproduction medium 22 and the drive motor 11 for the recording medium 1 rotate at predetermined rotational speeds respectively (S5), and the reproduction is performed. The reproduction start in the section 40 and the recording start in the recording / reproduction section 30 are simultaneously performed (S6).

Next, a reproducing side / recording side memory amount adjustment process is performed. The reproducing side / recording side memory amount adjustment processing is shown in FIG.
As shown in the flowchart of the reproduction side / recording side memory amount adjustment routine, it is determined whether the storage amount of the reproduction side shock proof memory 15 is the same as the normal storage amount C '(S).
21). Then, when the storage amount of the reproduction-side shock proof memory 15 is the same as the normal storage amount C ′, it is determined whether the storage amount of the recording-side shock proof memory 5 is the same as the normal storage amount C (S22), and the storage is performed. Amount is the normal storage amount C
If it is the same as, it is judged whether or not the dubbing is finished (S23). If the dubbing is finished, the process returns.
If the dubbing has not ended, the process returns to S21.

By the way, when the storage amount of the reproducing shock-proof memory 15 is not the same as the normal storage amount C'in S21, it is judged whether or not the storage amount of the reproducing shock-proof memory 15 is larger than the normal storage amount C '. Is done (S2
4). If the storage amount is larger than the normal storage amount C ', the system control microcomputer 8 commands the frequency conversion circuit 9 to lower the reproduction side frequency and stores the maximum storage amount B' (S25). ), S21
Return to. If the storage amount is smaller than the normal storage amount C'in S24, the system control microcomputer 8 commands the frequency conversion circuit 9 to increase the reproduction side frequency, and the normal storage amount C'is set. Control (S2
6) and returns to S21. The frequency on the reproducing side can be gradually lowered or increased.

On the other hand, when the storage amount is larger than the normal storage amount C in S22, it is determined whether or not the storage amount in the recording-side shock proof memory 5 is larger than the normal storage amount C (S27). When the storage amount is larger than the normal storage amount C, the system control microcomputer 8 commands the frequency conversion circuit 9 to lower the recording side frequency and stores the maximum storage amount B (S28). S21
Return to. If the storage amount is smaller than the normal storage amount C in S27, the system control microcomputer 8 commands the frequency conversion circuit 9 to increase the recording side frequency, and controls the storage amount to become the normal storage amount C. (S2
9) and returns to S21.

When the reproduction side / recording side memory amount is adjusted by the above reproduction side / recording side memory amount adjusting routine and the dubbing is completed, the reproducing side drive motor 21 is stopped as shown in FIG. 3 (S8). ), Then the drive motor 11 on the recording side is also stopped (S9).

Next, after the recording side TOC is calculated (S10), the recording side TOC recording is performed (S1).
1).

As described above, in the information recording / reproducing apparatus of the present embodiment, the uncompressed reproduced signal of the reproducing medium 22 reproduced by the reproducing section 40 is stored in the reproducing shock proof 15 when dubbing. At this time, the storage amount in the reproduction side shock proof memory 15 is detected by the reproduction memory controller 16. Then, when the storage amount in the reproduction-side shock proof memory 15 is smaller than the normal storage amount C ′ due to a read error, the system control microcomputer 8 causes the frequency conversion circuit 9 to prevent the waiting time from increasing. Instruct to increase the reproduction speed to quickly reach the normal storage amount C'or more.

Next, the shock-proof memory 1 on the reproducing side
The uncompressed reproduction signal stored in 5 is compressed by the recording / reproducing unit 30, and the compression information is stored in the recording-side shock proof memory 5. The storage capacity of the recording-side shock proof memory 5 is detected by the recording / reproducing memory controller 4. Here, for example, when the compression information in the recording-side shock proof memory 5 cannot be recorded due to disturbance or the like, the storage amount in the recording-side shock proof memory 5 becomes larger than the normal storage amount C. . At this time, the system control microcomputer 8 first commands the frequency conversion circuit 9 to lower the frequency of the servo circuit 19 to reduce the reproduction speed, and then stores the maximum storage amount B ′ which is equal to or larger than the normal storage amount C ′. . As a result, even if recording is not possible, it is possible to increase the storage amount of the reproduction-side shock proof memory 15 while gaining time. Then, after the storage amount of the reproduction-side shock proof memory 15 reaches the maximum storage amount B ′ which is equal to or larger than the normal storage amount C ′, the system control microcomputer 8 commands the frequency conversion circuit 9 to increase the frequency of the servo circuit 12. By increasing the recording speed, it is possible to recover the lost time even a little.

As a result, it is possible to reduce the recording time loss during dubbing.

[Embodiment 2] The following will describe another embodiment of the present invention with reference to FIGS. 5 and 6. For convenience of explanation, members having the same functions as the members shown in the drawings of the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted.

In the information processing apparatus of this embodiment, as shown in FIG. 5, the decoder / signal processing circuit 1 in the reproducing section 40 is used.
7 is provided with an error rate detecting section 27 as an error detecting means. The error rate detection unit 27 sends a signal to the system control microcomputer 8 when the reproduction medium 22 is read at high speed and the error rate deteriorates due to scratches or the like and the reading cannot be performed. ing. Then, the system control microcomputer 8 uses the error rate detection unit 2 for high-speed dubbing.
When the reading error is detected by the No. 7, the playing speed of the playing medium 22 is decelerated until the uncompressed playing signal becomes readable, and after reading the reading error, it is returned to the original playing speed at the time of high-speed dubbing. It functions as an adjusting means.

The operation at the time of high-speed dubbing by the error rate detecting section 27 will be described with reference to the flowchart of FIG. The flowchart of the present embodiment differs from the flowchart shown in FIG. 3 of the first embodiment only in the reproduction side / recording side memory amount adjustment routine. Therefore, only the reproduction side / recording side memory amount adjustment routine will be described here.

As shown in FIG. 6, while the recording information is being read from the reproducing medium 22 during the high speed dubbing, the error rate detecting section 27 judges whether or not the reproducing side error rate is equal to or less than the specified value ( S31). If the reproduction-side error rate is equal to or lower than the specified value, it is determined whether the dubbing is completed (S32). If the dubbing is completed, the process returns, and if the dubbing is not completed, the process returns to S31.

By the way, in S31, if the error rate becomes worse due to scratches or the like and reading becomes impossible, the error rate on the reproduction side by the error rate detecting section 27 becomes equal to or higher than the specified value, and the system control microcomputer 8
Is sent to.

The system control microcomputer 8 sends a command for lowering the frequency of the reproducing section 40 to the frequency conversion circuit 9 and sends a frequency conversion signal to the servo circuit 19. Then, the servo circuit 19 drives the driver circuit 20 to decrease the rotation speed of the drive motor 21 (S33). Next, it is again determined whether the reproduction side error rate is equal to or lower than the specified value (S34). After that, in the system control microcomputer 8, the error rate detection unit 27 in the decoder / signal processing circuit 17 confirms that the error rate has become equal to or lower than the specified level, reads the signal, and stores it in the reproduction side shock proof memory 15. To do. After the signal is read (S35), the system control microcomputer 8 sends an instruction to increase the frequency to the frequency conversion circuit 9 to increase the rotation speed through the above path (S36), and the reproduction side shock proof memory 15 is stored. The rotation is controlled until the normal storage capacity C ′ is reached (S37), and when the normal storage capacity C ′ is reached, the reproduction frequency is returned to the set value for high-speed dubbing.

As described above, in the information processing apparatus according to the present embodiment, when the recorded information on the reproduction medium 22 is being read at high speed, if the error rate deteriorates due to scratches or the like and reading becomes impossible, the error rate detection unit 27 causes Detects read errors. Based on the detection of the reading error by the error rate detection unit 27, the system control microcomputer 8
Reduces the reproduction speed of the reproduction medium 22 until the uncompressed reproduction signal becomes readable. Further, the system control microcomputer 8 returns to the original reproduction speed at the time of high-speed dubbing after the reading of the reading error is completed.

As a result, when the recorded information on the reproduction medium 22 cannot be read at high speed, the speed is reduced until it can be read, and after the reading, the reproduction speed at the original high-speed dubbing is reached. It is possible to avoid leaving the device in a stopped state without being able to read the information.

Therefore, it is possible to reduce the recording time loss during dubbing.

[0053]

As described above, in the information processing apparatus according to the first aspect of the present invention, the reproduction section stores the reproduction signal storage means for storing the non-compressed reproduction signal of the reproduction medium, and the storage amount in the reproduction signal storage means. And a reproduction side storage amount detecting means for detecting, and a reproduction speed changing means for changing the reproduction speed,
The recording section is provided with recording side storage amount detecting means for detecting the storage amount in the recording signal storage means and recording speed changing means for changing the recording speed, while reproducing side storage amount detecting means and recording side storage amount detection means. Speed control means for changing the reproduction speed and the recording speed is provided to the reproduction speed changing means and the recording speed changing means so as to change the storage speed in the reproduction signal storage means and the recording signal storage means based on the detection result of the means. It is a composition.

Thus, when dubbing, if the storage amount in the reproduction signal storage unit is smaller than the normal storage amount due to a read error, the speed control unit prevents the reproduction speed from increasing. The variable means is instructed to increase the reproduction speed so that the normal storage amount is quickly exceeded.

Further, even if the compressed information of the recording signal storage means cannot be recorded due to disturbance or the like, it is possible to increase the storage amount of the reproduction side storage amount detecting means while gaining time. Then, after the storage amount of the reproduction side storage amount detecting means reaches the maximum storage amount, the speed control means instructs the recording speed varying means to increase the recording speed, whereby the lost time can be recovered as much as possible.

Therefore, it is possible to reduce the recording time loss during dubbing.

As described above, the information processing apparatus according to the second aspect of the present invention is the information processing apparatus according to the first aspect, wherein the reproducing section includes an error detecting means for detecting a read error of the non-compressed reproduced signal, and a high speed. When a read error is detected by the error detection means during dubbing, the playback speed of the playback medium is reduced until the uncompressed playback signal becomes readable, while after reading the read error, playback at the original high-speed dubbing is performed. And a speed adjusting means for returning to the speed.

As a result, when the recorded information on the reproduction medium cannot be read at high speed, the speed is reduced until it can be read,
In addition, since the reproduction speed at the time of the original high-speed dubbing is obtained after reading, it is possible to avoid that the recording information on the reproduction medium cannot be read and the apparatus remains in a stopped state. Therefore, it is possible to reduce the recording time loss during dubbing.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an information processing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a storage amount of a shock proof memory provided in the information processing apparatus, (a) is a recording side shock proof memory, and (b) is a reproducing side shock proof memory.

FIG. 3 is a flowchart showing control during dubbing operation in the information processing apparatus.

4 is a reproduction side executed according to the flowchart of FIG.
6 is a flowchart showing a recording side memory amount adjustment routine.

FIG. 5 is a block diagram showing a configuration of an information processing device according to another embodiment of the present invention.

FIG. 6 is a flowchart showing a reproduction side / recording side memory amount adjustment routine executed by the information processing apparatus.

FIG. 7 is a block diagram showing a configuration of an information processing apparatus, showing a conventional example.

[Explanation of symbols]

1 recording medium 4 recording / reproducing memory controller (recording side storage amount detection means) 5 recording side shock proof memory (recording signal storage means) 8 system control microcomputer (speed control means,
Speed adjusting means) 9 Frequency conversion circuit (reproducing speed varying means, recording speed varying means) 15 reproducing side shock proof memory (reproducing signal storing means) 16 reproducing memory controller (reproducing side storing amount detecting means) 17 error rate detecting section (error Detection means) 22 reproduction medium 30 recording / reproduction unit (recording unit) 40 reproduction unit

Claims (2)

[Claims] 1. A non-compressed reproduction signal of a reproduction medium reproduced by a reproduction section is compressed by a recording section, the compression information is stored in a recording signal storage means, and a storage signal stored in the recording signal storage means is stored. In a recording information recording / reproducing apparatus for reading and recording on a recording medium, the reproducing section stores reproduction signal storage means for storing a non-compressed reproduction signal of the reproduction medium, and reproduction side storage for detecting a storage amount in the reproduction signal storage means. An amount detecting means and a reproducing speed changing means for changing the reproducing speed are provided, and the recording portion has a recording side storage amount detecting means for detecting a storage amount in the recording signal storing means, and a recording speed for changing the recording speed. While the variable means is provided, the storage speed to the reproduction signal storage means and the recording signal storage means should be variable based on the detection results of the reproduction side storage amount detection means and the recording side storage amount detection means. An information recording / reproducing apparatus characterized in that the reproducing speed varying means and the recording speed varying means are provided with speed control means for varying the reproducing speed and the recording speed. 2. The reproducing unit detects an error in reading a non-compressed reproduced signal and an error detecting unit for detecting a read error of the reproducing medium when the error detecting unit detects a reading error during high-speed dubbing. A speed adjusting means is provided for decelerating the uncompressed reproduction signal until it becomes readable, and for returning to the original reproduction speed at the time of high-speed dubbing after the reading error is read.
Information recording / reproducing apparatus described.