JP2895360B2 - Information recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

When the above-mentioned dubbing is performed by the information recording / reproducing apparatus, as shown in FIG. 7, the uncompressed digital data recorded on the reproducing medium 22 is reproduced by the reproducing circuit 18 of the reproducing section 40 and the decoder / decoder. The signal 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. After the audio compression / expansion circuit 6 performs compression processing, the shock-proof memory controller 4 stores a fixed amount of compressed data in the recording-side shock-proof memory 5 as recording signal storage means. The proof memory controller 4 reads from the recording-side shock proof memory 5 and then records the data on the recording medium 1 via the recording / reproducing circuit 2 at the same speed as the audio reproduction speed. Further, at the time of 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 processing, all information on the reproduction medium 22 is dubbed to the recording medium 1.

[0004]

However, in the above-mentioned conventional information recording / reproducing apparatus, when dubbing, when an error or the like occurs on the reproducing side and the amount of data stored in the recording-side shockproof memory 5 is reduced, recording is performed. On the other hand, there is a problem that the recording time is lost because the recording side waits until a certain amount is stored in the recording side shock proof memory 5.

[0005] In the above-mentioned problem, particularly, as data is transferred at a higher speed, the number of accesses and track jumps increases, so that recording and interruption on the recording medium 1 are frequently performed, and the probability of access failure increases. Therefore, the recording time loss tends to increase.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned conventional problems, and has as its object to provide an information recording / reproducing apparatus capable of reducing a loss of recording time during dubbing.

[0007]

In order to solve the above-mentioned problems, an information recording / reproducing apparatus according to the first aspect of the present invention compresses an uncompressed reproduction signal of a reproduction medium reproduced by a reproduction section in a recording section. A recording information recording / reproducing apparatus which stores the compressed information in a recording signal storage means and reads out a storage signal stored in the recording signal storage means and records it on a recording medium;
The reproduction unit includes a reproduction signal storage unit that stores an uncompressed reproduction signal of a reproduction medium, a reproduction side storage amount detection unit that detects a storage amount in the reproduction signal storage unit, and a reproduction speed variable unit that changes a reproduction speed. And the recording unit is provided with recording-side storage amount detection means for detecting the storage amount in the recording signal storage means, and recording speed variable means for varying the recording speed, while reproduction-side storage amount detection means And speed control for varying the reproducing speed and the recording speed by the reproducing speed varying unit and the recording speed varying unit so as to vary the storage speed in the reproducing signal storing unit and the recording signal storing unit based on the detection result of the recording side storage amount detecting unit. Means are provided.

According to a second aspect of the present invention, there is provided an information recording / reproducing apparatus according to the first aspect, wherein the reproducing unit detects a reading error of an uncompressed reproduced signal. Error detection means, and when a reading error is detected by the error detection means during high-speed dubbing, the playback speed of the playback medium is reduced until an uncompressed playback signal becomes readable. Speed adjusting means for returning to the original reproduction speed at the time of high-speed dubbing is provided.

[0009]

According to the first aspect of the present invention, when dubbing, the uncompressed reproduction signal of the reproduction medium reproduced by the reproduction 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. 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 variable unit to increase the reproduction speed so that the waiting time does not increase. So that it quickly exceeds the normal storage capacity.

Next, the uncompressed reproduction signal stored in the reproduction signal storage means is compressed in the recording section, and the compressed information is stored in the recording signal storage means. Then, the storage amount of the recording signal storage means is detected by the storage-side storage amount detection means. Here, for example, when the compression information of 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 variable means to reduce the reproduction speed, and then causes the reproduction speed to be stored at or above the normal storage amount. As a result, it is possible to increase the storage amount of the reproduction side storage amount detecting means while gaining time even if recording is not possible.

Then, after the storage amount of the storage amount detection means becomes equal to or larger than the normal storage amount, the speed control means instructs the recording speed variable means to increase the recording speed, so that the loss time can be recovered even a little. .

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

According to the second aspect of the present invention, for example,
When reading recorded information on a playback medium at high speed,
When the error rate is deteriorated due to scratches or the like and reading becomes impossible, the error detecting means detects a reading error. Based on the detection of the reading error by the error detecting means,
The speed adjusting means reduces the reproduction speed of the reproduction medium until an uncompressed reproduction signal becomes readable. Further, after the reading of the reading error is completed, the speed adjusting means returns to the original reproduction speed at the time of high-speed dubbing.

As a result, if the recorded information on the reproduction medium cannot be read at high speed, the speed is reduced until it can be read, and after reading, the reproduction speed becomes the original high-speed dubbing speed. It is possible to prevent the apparatus from remaining in a stopped state without being able to read.

Therefore, the loss of recording time during dubbing can be reduced.

[0016]

【Example】

Embodiment 1 FIGS. 1 to 4 show an embodiment of the present invention.
This will be described below.

The information recording / reproducing apparatus of this embodiment, such as a digital cassette tape or a CD (Compact Disc), is capable of mounting two information media, and serves as a recording unit shown on the left side of the dashed line in FIG. The recording / reproducing unit 30 and the reproducing unit 40 shown on the right side of the one-dot chain line in FIG.

The recording / reproducing section 30 is capable of recording and reproducing information, and comprises a recording medium 1, a recording / reproducing circuit 2, an encoder decoder signal processing circuit 3, and a shock-proof memory controller (hereinafter referred to as a "recording / reproducing memory"). 4, a recording side shock proof memory 5, a voice 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, then compressed by the audio compression / expansion circuit 6, and thereafter, The compressed information is recorded on the recording medium 1 via a circuit or the like, and information relating to the recording area of the recording medium 1 is stored in a recording-side shock proof memory 5 as 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 analog signal is sent to a D converter 7 and converted into a digital signal by an A / D converter.
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 a storage-side storage amount detecting means.

The recording / reproducing memory controller 4 writes the transmitted signal into 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 the data to the encoder / decoder signal processing circuit 3, where the modulation / error correction code is encoded. Perform addition, 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) to 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, and the recording medium 1
To record.

When the recording is completed, the system control microcomputer 8 controls the recording / reproducing memory controller 4 so that the TO stored in the recording-side shock proof memory 5 can be read.
The data recorded on the recording medium 1 is managed by rewriting the C information and using this 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 a "reproducing memory controller") 16, a reproducing side shock proof memory 15, It includes 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.

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

In the case of reproduction by the reproduction unit 40,
The playback medium 22 is rotated by a drive motor 21 driven by a driver circuit 20, and the uncompressed audio data recorded on the playback medium 22 is read by the playback circuit 18. The audio data read by the reproduction circuit 18 is sent to the decoder / signal processing circuit 17.
In addition, a servo control signal such as a tracking error signal is generated from the audio data read by the reproduction circuit 18 and output to the servo circuit 19. The servo circuit 19 controls the driver circuit 20 to apply tracking, drive motor, and other servos based on a servo control signal from the reproduction circuit 18 and a control signal from the system control microcomputer 8. And
The driver circuit 20 drives a drive motor 21 according to a control signal from the servo circuit 19. The decoder / signal processing circuit 17 demodulates the signal amplified by the reproduction circuit 18, further performs signal processing such as error correction, and sends the signal to a reproduction memory controller 16 as a reproduction side storage amount detection unit.

The reproduction memory controller 16 writes the signal sent from the decoder / signal processing circuit 17 to 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 mounted on the apparatus, the TO recorded on the reproduction medium 22 along the same path as the audio data is recorded.
The C information is secured in a predetermined area of the reproduction-side shock proof memory 15. The reproduction memory controller 16 reads necessary TOC information from the reproduction side shock proof memory 15 in response to a request from the system control
Send to The system control microcomputer 8 controls the present system based on the TOC information and reads necessary data from the reproduction medium 22. The reproduction memory controller 16 reads out 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 received digital signal into an analog signal to generate an audio signal. And
This audio signal is output from the output terminal 26 as audio.

Further, the system control microcomputer 8 performs 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 a speed control means for changing the reproduction speed and the recording speed in order to change the storage speed of the data.

Next, the operation of the recording / reproducing unit 30 and the reproducing unit 40 during editing will be described below. It should be noted that editing means the playback unit 40
While recording on the recording medium 1 by the recording / reproducing unit 30 while reproducing the reproduction medium 22. The editing method includes normal dubbing performed at a normal speed and high-speed dubbing performed at a high speed. Hereinafter, normal dubbing and high-speed dubbing will be described in order.

During normal dubbing, as shown in FIG.
First, the reproduction circuit 18 reads data recorded on the reproduction medium 22 and sends the data to the decoder / signal processing circuit 17. Then, the decoder / signal processing circuit 17 performs signal processing such as demodulation and error correction, and temporarily stores the signal in the reproduction side shock proof memory 15. The data stored in the reproduction-side shock proof memory 15 by the reproduction memory controller 16 is sent to the audio compression circuit in the audio compression / decompression circuit 6 of the recording / reproduction unit 30 along the path indicated by arrow A. Next, the digital data is compressed by an audio compression circuit, stored in the recording-side shock proof memory 5 and, when a certain amount is stored, sent to the encoder signal processing circuit in the encoder / decoder signal processing circuit 3 by the recording / reproducing memory controller 4 so that the modulated audio compression is performed. A decompression circuit 6 and an error correction code are added, and the recording / reproducing circuit 2 performs recording 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 a frequency conversion circuit 9 as a reproduction speed variable means and a recording speed variable means. From 16MHz to the servo circuit 19.1
Send to 2. In the servo circuits 19 and 12, the driver circuit 2
0, 13 and read out while rotating the reproduction medium 22 and the recording medium 1 at high speed by the drive motors 21, 11;
Make a record.

The editing path is the same as in normal dubbing,
This 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, the shock-proof memory 5.15
Can store data up to the maximum storage amounts B and B 'indicated by broken lines, respectively, as shown in FIGS. 2A and 2B.
Data is stored up to C '. Then, as shown in FIG. 2B, for example, the playback side shockproof memory 1
In the case where the data amount of No. 5 has decreased to the reduced storage amount D 'indicated by the dashed line due to disturbance or the like, the recording side shock proof memory 5 also stores the reduced storage as indicated by the dashed line in FIG. It decreases to the amount D.

Then, the system control microcomputer 8
When detecting that the storage amount of the shock proof memories 15 and 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, rotates the drive motor 21 at high speed via the driver circuit 20, and stores the normal storage amount C ′.
, And the frequency of the reproducing unit 40 is controlled until the storage capacity of the recording-side shockproof memory 5 reaches the normal storage amount C while the frequency of the recording and reproducing unit 30 remains the same as before. . On the other hand, if 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. A command to increase the frequency is sent to the recording / reproducing unit 30 to perform high-speed recording and control so that the storage capacity becomes the normal storage capacity C. Note that data is transferred from the reproducing unit 40 to the recording-side shock proof memory 5 of the recording / reproducing unit 30 even when recording is not possible, and the data is stored up to the maximum storage amount B.

The control of the storage amount of the shock proof memories 15 and 5 at the time of the above dubbing will be described in detail below with reference to the flowcharts of FIGS.

First, as shown in FIG. 3, the reproduction start point on the reproduction medium 22 is searched and then temporarily stopped (S
1) It is determined whether or not the reproduction preparation is OK (S2). S2
If not, 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 temporarily stopped (S3). Next, it is determined 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
If the recording preparation is OK in step 4, the frequency is set so that the drive motor 21 for the reproduction medium 22 and the drive motor 11 for the recording medium 1 rotate at a predetermined number of revolutions (S5). The reproduction start in the unit 40 and the recording start in the recording / reproducing unit 30 are performed simultaneously (S6).

Next, a reproduction-side / recording-side memory amount adjustment process is performed. The reproduction-side / recording-side memory amount adjustment processing is performed as 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). 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). The amount is the normal storage amount C
If it is the same as above, it is determined whether or not dubbing has been completed (S23).
If dubbing has not been completed, the process returns to S21.

If the storage amount of the reproduction side shock proof memory 15 is not the same as the normal storage amount C 'in S21, it is determined whether the storage amount of the reproduction side shock proof memory 15 is larger than the normal storage amount C'. (S2
4). If the storage amount is larger than the normal storage amount C ′, the system control microcomputer 8 instructs the frequency conversion circuit 9 to lower the reproduction side frequency and stores the data up to 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 instructs the frequency conversion circuit 9 to increase the reproduction-side frequency and sets the normal storage amount C'. Control (S2
6) Return to S21. The reproduction-side frequency can be gradually lowered or increased.

On the other hand, if the storage amount is larger than the normal storage amount C in S22, it is determined whether the storage amount of the recording-side shock proof memory 5 is larger than the normal storage amount C (S27). If the storage amount is larger than the normal storage amount C, the system control microcomputer 8 instructs 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 instructs the frequency conversion circuit 9 to increase the recording-side frequency and controls the normal storage amount C. (S2
9) Return to S21.

The reproduction-side / recording-side memory amount adjustment routine adjusts the reproduction-side / recording-side memory amount, and when the dubbing is completed, as shown in FIG. 3, the reproduction-side drive motor 21 is stopped (S8). Then, the drive motor 11 on the recording side is also stopped (S9).

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

As described above, in the information recording / reproducing apparatus of this embodiment, when dubbing, the uncompressed reproduction signal of the reproduction medium 22 reproduced by the reproduction section 40 is stored in the reproduction side shock proof 15. At this time, the storage amount in the reproduction side shock proof memory 15 is detected by the reproduction memory controller 16. When the storage amount in the reproduction-side shock proof memory 15 is smaller than the normal storage amount C ′ due to, for example, a read error, the system control microcomputer 8 controls the frequency conversion circuit 9 so that the waiting time does not increase. An instruction is issued to increase the reproduction speed so that the normal storage amount C 'is quickly exceeded.

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

As a result, the loss of the recording time during dubbing can be reduced.

Embodiment 2 Another embodiment of the present invention will be described below with reference to FIGS. For the sake of convenience, members having the same functions as those shown in the drawings of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 5, the information processing apparatus of this embodiment has a decoder / signal processing circuit 1 in a reproducing section 40.
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 error rate is deteriorated due to, for example, a flaw while reading the reproduction medium 22 at a high speed, and the data cannot be read. ing. Then, the system control microcomputer 8 controls the error rate detection unit 2 to perform high-speed dubbing.
7, when the reading error is detected, the playback speed of the playback medium 22 is reduced until the uncompressed playback signal becomes readable, and after the reading error is read, the playback speed returns to the original playback speed at the time of high-speed dubbing. It functions as 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 is different from the flowchart of the first embodiment shown in FIG. 3 only in the memory amount adjustment routine for the reproducing side and the recording side. Therefore, here, only the reproduction side / recording side memory amount adjustment routine will be described.

As shown in FIG. 6, when reading recorded information from the reproduction medium 22 at the time of high-speed dubbing, the error rate detection unit 27 determines whether or not the reproduction side error rate is equal to or less than a specified value. S31). If the reproduction-side error rate is equal to or less than the prescribed value, it is determined whether dubbing has been completed (S32). If dubbing has been completed, the process returns. If not, the process returns to S31.

In S31, if the error rate is deteriorated due to, for example, a flaw, and the data cannot be read, the error rate on the reproduction side by the error rate detection unit 27 becomes higher than a specified value.
Is sent to

The system control microcomputer 8 sends a command to lower 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 determined again whether or not the reproduction-side error rate is equal to or lower than a specified value (S34). After that, in the system control microcomputer 8, the error rate detecting section 27 in the decoder / signal processing circuit 17 confirms that the error rate has become equal to or lower than a specified level, reads out the signal and stores it in the reproduction side shock proof memory 15. I do. After the signal is read (S35), the system control microcomputer 8 sends a command to increase the frequency to the frequency conversion circuit 9 to increase the rotation speed in the above-described path (S36). 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 high-speed dubbing set value.

As described above, in the information processing apparatus according to the present embodiment, when reading the record information of the reproduction medium 22 at a high speed, if the error rate becomes poor due to a scratch or the like and the reading becomes impossible, the error rate detection unit 27 Detect read errors. Based on the detection of the reading error by the error rate detecting section 27, the system control microcomputer 8
Reduces the playback speed of the playback medium 22 until an uncompressed playback signal becomes readable. After the reading of the reading error is completed, the system control microcomputer 8 returns to the original reproduction speed at the time of high-speed dubbing.

As a result, if the recorded information on the reproduction medium 22 cannot be read at a high speed, the speed is reduced until the information can be read, and after the reading, the reproduction speed at the time of the original high-speed dubbing is obtained. It is possible to prevent the apparatus from remaining in a stopped state because information cannot be read.

Therefore, the loss of the recording time during dubbing can be reduced.

[0053]

As described above, in the information processing apparatus according to the first aspect of the present invention, the reproduction section includes a reproduction signal storage means for storing an uncompressed reproduction signal of a reproduction medium, and a storage amount in the reproduction signal storage means. A playback-side storage amount detection unit that detects the playback speed and a playback speed variable unit that varies the playback speed are provided.
The recording unit is provided with recording-side storage amount detection means for detecting the storage amount in the recording signal storage means, and recording speed variable means for varying the recording speed, while reproducing-side storage amount detection means and recording-side storage amount detection. Speed control means for varying the reproduction speed and the recording speed in the reproduction speed variable means and the recording speed variable means is provided to vary the storage speed in the reproduction signal storage means and the recording signal storage means based on the detection result of the means. Configuration.

When the storage amount in the reproduction signal storage means is smaller than the normal storage amount due to, for example, a reading error during dubbing, the speed control means controls the reproduction speed so that the waiting time does not increase. An instruction is given to the variable means to increase the reproduction speed so that the storage amount becomes faster than the normal storage amount.

Further, even if the compressed information of the recording signal storage means cannot be recorded due to disturbance or the like, the storage amount of the reproduction side storage amount detection means can be increased while increasing the time. Then, after the storage amount of the reproduction side storage amount detection unit reaches the maximum storage amount, the speed control unit instructs the recording speed variable unit to increase the recording speed, so that the loss time can be recovered even a little.

Therefore, there is an effect that the loss of the recording time can be reduced when dubbing.

According to a second aspect of the present invention, in the information processing apparatus according to the first aspect, the reproducing unit includes: an error detecting unit configured to detect a reading error of an uncompressed reproduced signal; When a reading error is detected by the error detecting means during dubbing, the playback speed of the playback medium is reduced until an uncompressed playback signal becomes readable. This is a configuration in which speed adjusting means for returning to speed is provided.

Thus, when the information recorded on the reproduction medium cannot be read at high speed, the speed is reduced until the information can be read.
After reading, the original reproduction speed at the time of high-speed dubbing is obtained, so that it is possible to prevent the recording information on the reproduction medium from being read and the apparatus from remaining stopped. Therefore, there is an effect that loss of recording time can be reduced in dubbing.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating 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, wherein (a) is a recording-side shock-proof memory, and (b) is a reproduction-side shock-proof memory.

FIG. 3 is a flowchart showing control at the time of a dubbing operation in the information processing apparatus.

FIG. 4 shows a reproduction side executed in the flowchart of FIG.
9 is a flowchart illustrating a recording-side memory amount adjustment routine.

FIG. 5 is a block diagram illustrating a configuration of an information processing apparatus 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 shows a conventional example and is a block diagram showing a configuration of an information processing apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Recording medium 4 Recording / playback 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,
9 Frequency conversion circuit (reproducing speed varying means, recording speed varying means) 15 Reproduction-side shock proof memory (reproduction signal storage means) 16 Reproduction memory controller (reproduction-side storage amount detection means) 17 Error rate detection section (error Detecting means) 22 playback medium 30 recording / playback unit (recording unit) 40 playback unit

Claims (2)

(57) [Claims] An uncompressed playback signal of a playback medium played back by a playback unit is compressed by a recording unit, the compressed information is stored in a recording signal storage unit, and a storage signal stored in the recording signal storage unit is compressed. In a recording information recording / reproducing apparatus for reading and recording on a recording medium, the reproducing section includes a reproduction signal storage means for storing an uncompressed reproduction signal of the reproduction medium, and a reproduction side storage for detecting a storage amount in the reproduction signal storage means. An amount detection means, a reproduction speed variable means for varying a reproduction speed, and a recording side storage amount detection means for detecting a storage amount in a recording signal storage means, and a recording speed for varying a recording speed. And a variable means for changing the storage speed of the reproduction signal storage means and the recording signal storage means 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 a speed control means for varying the reproducing speed and the recording speed. 2. The reproducing section according to claim 1, wherein: an error detecting means for detecting a reading error of the uncompressed reproduced signal; and a reproducing speed of a reproducing medium when a reading error is detected by the error detecting means during high-speed dubbing. 2. A speed adjusting means for decelerating an uncompressed reproduction signal until it becomes readable, and returning to a reproduction speed at the time of high-speed dubbing after reading a reading error.
An information recording / reproducing apparatus as described in the above.