JPH0737316A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To make power consumption lower than repetitive reproduction by using a voice data recorded on a disk because repetitive reproduction is conducted by using the voice data of a shockproof memory. CONSTITUTION:Voice data are stored temporarily in a shockproof memory 6 and the voice data are recorded and reproduced to 1 from a disk 1 in an information recording reproducer. A repetitive reproducing dey 19 capable of instructing of repetitive reproduction and the address of the shockproof memory 6 corresponding to the voice data at a time instructed with the repetitive reproducing key 19 during reproduction operation are used as repetitive reproducing points. A shockproof memory controller 5 reproducing the voice data existing in an address region within a fixed range in front and in rear of the repetitive reproducing points while stopping the storage of the voice data in the shockproof memory 6 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus capable of digitizing analog information and recording it on a recording medium such as a magneto-optical disk at a high density.

[0002]

2. Description of the Related Art A conventional information recording / reproducing apparatus that uses a semiconductor memory when reading audio data from a recording medium such as a mini disk device is a regular information recording / reproducing apparatus that regularly keeps the storage capacity of the semiconductor memory below a preset value. Information on a recording medium is reproduced by a series of operations in which audio data is read from a disk and stored, and the stored audio data is output at a constant rate per unit time.

Further, in the case of repeatedly reproducing a part of the audio data, as disclosed in, for example, Japanese Patent Application Laid-Open No. 61-258357 and Japanese Patent Application Laid-Open No. 1-211348, recording from the above recording medium is performed. A series of operations including a read operation, a storage operation in a semiconductor memory, and an output operation of stored audio data are repeated for the same recording area of a recording medium.

[0004]

However, in the above-mentioned conventional information processing apparatus, the operation for repeatedly reproducing a part of the audio data is performed by a series of operations as in the normal reproduction. There is a problem that power consumption easily increases. In particular, this problem becomes more noticeable as the frequency of repeatedly reproducing a part of the audio data increases as in the case of editing the audio data while reproducing.

Accordingly, it is an object of the present invention to provide an information processing apparatus which does not increase power consumption even when a part of audio data is repeatedly reproduced.

[0006]

In order to solve the above-mentioned problems, the information recording / reproducing apparatus according to the first and second aspects of the present invention records the information data on the recording medium by temporarily storing the information data in the storage means. It is used for reproduction and has the following features.

That is, the information recording / reproducing apparatus according to the invention of claim 1 corresponds to the repetitive reproduction instructing means capable of instructing the repetitive reproduction during the reproducing operation, and the information data at the time point instructed by the repetitive reproduction instructing means. An address of the storage means is set as a repetitive reproduction point, and there is a storage control means for reproducing the information data existing in an address area within a certain range before and after the repetitive reproduction point and for stopping the storage of the information data in the storage means. ing.

An information recording / reproducing apparatus according to a second aspect of the present invention corresponds to repetitive reproduction instructing means capable of instructing repetitive reproduction during reproduction operation and information data at a time point instructed by the repetitive reproducing instructing means. The address of the storage means is set as a repeat reproduction point, and the information data existing in the address area within a certain range before and after the repeat reproduction point is reproduced, and the storage control means for stopping the storage of the information data in the storage means, and the repeat Point adjustment means for moving the reproduction point, repeated reproduction area moving means for moving an address area set in a certain range before and after the repeated reproduction point, and recording so that the repeated reproduction point is the final position of the recording area of the recording medium. And a final position designating means for recording on the medium.

[0009]

According to the structure of claim 1, since the information data stored in the storage means is repeatedly reproduced,
It is possible to reduce the power consumption as compared with the case where the information data recorded on the recording medium is repeatedly reproduced.

According to the second aspect of the present invention, the address area in which the information data to be repeatedly reproduced is present can be moved, and after the repeated reproduction point is moved to an arbitrary position, the repeated reproduction is performed. Since the point can be recorded on the recording medium so as to be the final position of the recording area of the recording medium, the operability of the information recording / reproducing apparatus can be improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the present invention with reference to FIGS.

As shown in FIG. 1, the magneto-optical disk apparatus (information processing apparatus) according to this embodiment is equipped with a disk 1 (recording medium) capable of recording audio data, for example. This disc 1 is, as shown in FIG.
Lead-in area 1a, UTO from the inner circumference side to the outer circumference side
The C area 1b, the music data area 1c, and the lead-out area 1d have a format formed in this order. The UTOC area 1b is a portion in which the address of the track number of the disk 1 is stored, and the structural image of the UTOC area 1b is, as shown in FIG. n and areas A, B, C ...

The PTNO. A value indicating the location in the UTOC area 1b where the address data of the nth music is recorded is stored in the area n. In the areas A, B, C, ..., First and last address data of the first, second, third, ... That is, from the disk 1 to the PTNO. When the address data of No. 1 is read, the address data in A is read and the first music piece is reproduced, and then PTNO. The second address data is read and the second music is reproduced.

Further, the LINK-P portion existing in the areas A, B, C, ... Of the consecutive portions of the same track number so that one music piece can be recorded over a plurality of areas. It is a recording area for storing address data. Specifically, PTNO. n and A, B,
When each area of C ... Is set as shown in FIGS. 4 and 5, the “LINK” stored in the LINK-P is stored.
Depending on the address data of C ", TNO.1 → TN
O. 2 → TNO. It is adapted to be reproduced in order of 3.

Disc 1 having the above format
As shown in FIG. 1, the spindle motor 12 connected to the driver circuit 11 is driven to rotate at a predetermined rotation speed. Information is recorded on and reproduced from the disk 1 by the recording head 16. And the optical pickup 2 respectively.

A head drive circuit 15 is connected to the recording head 16 described above, and an encoder decoder / signal processing circuit 4 is connected to the head drive circuit 15.
The encoder / decoder / signal processing circuit 4 is adapted to modulate data to be written in the disc 1 at the time of recording, add a correction code, etc.
During reproduction, signal processing such as data demodulation and error correction is performed. On the other hand, the optical pickup 2
Includes a feed motor 13 for moving the optical pickup 2,
The feed motor 13 and the spindle motor 12 described above
Circuit 11 for supplying power to the power source, and a power ON / OFF circuit 1 for switching the output state of the driver circuit 11
4 is connected.

Further, the optical pickup 2 is connected to an RF amplifier 3, and the RF amplifier 3 generates servo control signals such as a focus error signal and a tracking error signal from the audio data read by the optical pickup 2. It is like this. The RF amplifier 3 is connected to the encoder decoder / signal processing circuit 4 described above, and the encoder decoder / signal processing circuit 4 is a shock proof memory controller 5 which is a storage control means.
(Hereinafter, referred to as memory controller 5).

The memory controller 5 is connected to the shock proof memory 6 (storage means), and writes and reads voice data to and from the shock proof memory 6. That is, as shown in FIG. 6, the writing speed of the audio data from the disk 1 which is the moving speed of the write pointer Q is set to about 5 times the reading speed which is the moving speed of the transfer pointer P of the shock proof memory 6. Then, audio data is written and read by causing the transfer pointer P to follow the write pointer Q.

Further, the memory controller 5 sets the first threshold value TH _P set to a data capacity for a predetermined time such as 6 seconds and the data capacity for a predetermined time larger than the first threshold value TH _P. The second threshold value TH _P is set. Then, the memory controller 5 determines that the address difference between the write pointer Q and the transfer pointer P is the first threshold value T.
When becomes H _P, while being adapted to stop writing of the audio data, when the above address difference becomes the second threshold value TH _P, so as to start the writing of the audio data There is.

As shown in FIG. 1, the memory controller 5 is connected to an audio expansion / compression circuit 7 composed of an audio expansion circuit and an audio compression circuit. The voice expansion circuit
While the audio data is decompressed by expanding the audio data according to a predetermined time axis, the audio compression circuit
The audio data is compressed into about 1/5 of audio data by an MD information compression technique called ATRAC. The audio decompression / compression circuit 7 includes a D / A converter including a D / A converter 8a and an A / D converter 8b.
It is connected to the A / D converter 8, and D / A / A / D
The converter 8 is adapted to convert the audio data into a digital signal and an analog signal.

The above-mentioned servo circuit 10, power supply ON / OFF
The circuit 14, the encoder / decoder / signal processing circuit 4, and the memory controller 5 are connected to a system control microcomputer 9 (system control microcomputer). The system control microcomputer 9 includes a repeat reproduction key 19 (reproduction instruction means) for setting a repeat reproduction address, an end point adjustment key 20 (point adjustment means) for adjusting an end point, and a repeat reproduction area shift key for adjusting a repeat reproduction area. 21 (repeated reproduction area moving means), an end mark key 22 (final position designating means) for setting an end point, and an alarm sound generator 23 for identifying the end point are connected, and the system control microcomputer 9 uses an optical pickup. 2 or the input signals from the keys 19 to 23 or the like, based on the input signals or the like,
5 and the operation of the alarm sound generator 23 are controlled.

The operation of the information recording / reproducing apparatus having the above structure will be described.

During reproduction, the spindle motor 12 driven by the driver circuit 11 rotationally drives the disk 1, and the feed motor 13 driven by the driver circuit 11 of the information processing apparatus drives the optical pickup 2
Is sent in the radial direction of the disc 1, and the audio data recorded on the disc 1 is read by the optical pickup 2.

The audio data read by the optical pickup 2 is used in the RF amplifier 3 for generating servo control signals such as a focus error signal and a tracking error signal. This servo control signal is output to the servo circuit 10, and the servo circuit 10
Based on the servo control signal and the control signal from the system control microcomputer 9, the driver circuit 11 is controlled to apply focus, tracking, and spin servos.

The audio data read by the optical pickup 2 is amplified by the RF amplifier 3 and then
It is output to the encoder / decoder / signal processing circuit 4 and subjected to signal processing such as demodulation and error correction. Thereafter, the audio data is output to the memory controller 5, the memory controller 5 performs the writing operation and the reading operation with respect to the shock proof memory 6, and then is output to the audio decompression / compression circuit 7.

The write operation and the read operation to and from the shock proof memory 6 by the memory controller 5 will be described. First, as shown in FIG. 6A, the write pointer Q follows the transfer pointer P to generate a voice. Data will be written and read. At this time, since the moving speed of the write pointer Q with respect to the transfer pointer P is set to about 5 times, the write pointer Q approaches the transfer pointer P by continuing the writing and reading of the audio data. It will be.

When the address difference (empty area) between the write pointer Q and the transfer pointer P decreases to the first threshold value TH _P , as shown in FIG. 6B, the audio data is continuously read and the disc is read. Writing of the audio data from 1 is temporarily interrupted. On the other hand, the transfer pointer P continues to be counted after reading the audio data. Then, as shown in FIG. 6C, when the empty area increases to the second threshold value TH _P , access to the disk 1 is started again, and FIG.
As shown in, the audio data following the interruption is written in the shock proof memory 6. Thereafter, when the transfer pointer P and the write pointer Q reach the upper limit address F of the shock proof memory 6, the transfer pointer P and the write pointer Q are automatically returned to the lower limit address E, so that the above write and read operations are performed at the upper and lower limit addresses. It will be repeated between FE.

When the repeat reproduction key 19 shown in FIG. 1 is pressed during the above reproduction operation, the reading of the audio data from the disk 1 and the writing of the audio data into the shock proof memory 6 are stopped. Then, the address in the shock proof memory 6 corresponding to the audio data at the time when the repeat reproduction key 19 is operated is set as a repeat reproduction point (= end point) and stored in a predetermined storage area of the shock proof memory 6. become. After that, as shown in FIG. 7, the audio data of about 3 seconds before and after the repeated reproduction point (about 6 seconds in total) is repeatedly read from the shock proof memory 6 and reproduced.

In the above repeated reproduction operation, an identification signal such as a beep sound is emitted from the notification sound generator 23 each time the repeated reproduction point is passed. As a result, the operator can identify the repeated reproduction point (= end point) by the identification signal. When the end point adjustment key 20 is pressed, the repeat playback point (= end point)
Can be shifted by about 0.3 seconds. Therefore,
The operator can move the repeated reproduction point (= end point) to the optimum position while checking the identification signal of the alarm sound generator 23.

Further, the repeat reproduction area shift key 21
When is pressed, the repeated reproduction area can be shifted by about 0.3 seconds. Therefore, the operator
Since the threshold value TH _P is set to the data capacity of about 6 seconds, it is possible to shift the repeated reproduction area by about 0.3 seconds each for a total of about 3 seconds. At this time, the repeated reproduction point (= end point) does not change due to the movement of the repeated reproduction area by the repeated reproduction area shift key 21, but when it becomes equal to the address at the end of the repeated reproduction area, this address is Become an endpoint. Also, the end mark key 22
When is pressed, the repeated reproduction point (= end point) set up to that point becomes the final position of the recording area of the disc 1 as shown in FIGS. 9 and 10, and the address on the disc 1 is calculated from this information. Then, the resulting information is written in the UTOC area.

The audio data read from the shock proof memory 6 is output to the audio decompression / compression circuit 7 as shown in FIG. Then, the audio decompression circuit of the audio decompression / compression circuit 7 decompresses the audio data by decompressing the audio data in a time axis according to a predetermined format,
It is output to the D / A / A / D converter 8.
Thereafter, the D / A converter 8a of the D / A / A / D converter 8 converts the audio data of the digital signal into an audio signal, which is output as audio from the output terminal 17.

On the other hand, at the time of recording, the audio signal input from the audio input terminal 18 is output to the D / A / A / D converter 8 and converted from the analog signal to the digital signal audio data by the A / D converter 8b. After that, it is output to the voice expansion / compression circuit 7. This voice data is
The audio compression circuit of the audio expansion / compression circuit 7 compresses the data into about 1/5 by the information compression technology of MD called ATRAC and outputs the compressed data to the memory controller 5. After that, the audio data is written and read in the shock proof memory 6 by the memory controller 5, and is output to the encoder decoder / signal processing circuit 4.

The audio data input to the encoder decoder / signal processing circuit 4 is amplified by the RF amplifier 3 and output to the optical pickup 2 after being subjected to modulation and correction code addition. Then, the laser light of the optical pickup 2 is applied to the portion to which the magnetic field is applied by the recording head 16, so that the data is recorded on the disc 1.

As described above, the information recording / reproducing apparatus of the present embodiment temporarily stores the audio data in the shock proof memory 6 to record / reproduce the audio data on / from the disc 1. During the reproducing operation, A repeat playback key 19 capable of instructing repeat playback and an address of the shock proof memory 6 corresponding to the audio data at the time pointed by the repeat playback key 19 are set as a repeat playback point, and addresses within a certain range before and after the repeat playback point. The memory controller 5 reproduces the voice data existing in the area and stops the storage of the voice data in the shock proof memory 6.

As a result, the audio data stored in the shock proof memory 6 is repeatedly reproduced, so that the power consumption is reduced as compared with the case where the audio data recorded on the disk 1 is repeatedly reproduced. Is possible.

Further, the information recording / reproducing apparatus of this embodiment is
In addition to the above configuration, the end point adjustment key 20 for moving the repeated reproduction point, the repeated reproduction area shift key 21 for moving the address area set in a certain range before and after the repeated reproduction point, and the repeated reproduction point of the recording medium. It has an end mark key 22 for recording on the recording medium so as to be the final position of the recording area.

As a result, it is possible to move the address area where the repeatedly reproduced audio data exists, and after the repeated reproduction point is moved to an arbitrary position, the repeated reproduction point is set in the recording area of the recording medium. Since the information can be recorded on the recording medium so that the final position is reached, the operability of the information recording / reproducing apparatus is improved.

[0038]

According to the information recording / reproducing apparatus of the invention of claim 1,
As described above, during the reproduction operation, the repeat reproduction instruction means capable of instructing the repeat reproduction and the address of the storage means corresponding to the information data at the time point instructed by the repeat reproduction instruction means are set as the repeat reproduction point, A storage control unit that reproduces the information data existing in the address area within a certain range before and after the reproduction point and that stops the storage of the information data in the storage unit is provided.

As a result, since the information data stored in the storage means is repeatedly reproduced, the power consumption can be reduced as compared with the case where the information data recorded in the recording medium is repeatedly reproduced. Has the effect of being

As described above, the information recording / reproducing apparatus according to the second aspect of the present invention includes the repetitive reproduction instructing means capable of instructing the repetitive reproduction during the reproducing operation, and the information data at the time point instructed by the repetitive reproduction instructing means. The address of the storage means corresponding to the repetitive reproduction point, and the storage control means for reproducing the information data existing in the address area within a certain range before and after the repeated reproduction point and for stopping the storage of the information data in the storage means. A point adjusting means for moving the repetitive reproduction point, a repetitive reproduction area moving means for moving an address area set in a certain range before and after the repetitive reproduction point, and a repetitive reproduction point as a final position of the recording area of the recording medium. And a final position designating means for recording on the recording medium.

This makes it possible to move the address area in which the information data to be repeatedly reproduced exists, and after the repeated reproduction point is moved to an arbitrary position, the repeated reproduction point is set in the recording area of the recording medium. Since the information can be recorded on the recording medium so that the final position is reached, the operability of the information recording / reproducing apparatus can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram of an information recording / reproducing apparatus of the present invention.

FIG. 2 is an explanatory diagram showing each area formed on a disc.

FIG. 3 is an explanatory diagram showing a structural image of a UTOC area.

FIG. 4 is an explanatory diagram showing a track number address of a disc.

FIG. 5 is an explanatory diagram showing a structural image of a UTOC area.

FIG. 6 is an explanatory diagram showing a state of a shock proof memory.

FIG. 7 is an explanatory diagram showing a track number address of a disc.

FIG. 8 is an explanatory diagram showing a structural image of a UTOC area.

FIG. 9 is an explanatory diagram showing a track number address of a disc.

FIG. 10 is an explanatory diagram showing a structural image of a UTOC area.

[Explanation of symbols]

1 Disc (Recording Medium) 2 Optical Pickup 3 RF Amplifier 4 Encoder Decoder / Signal Processing Circuit 5 Memory Controller 6 Shock Proof Memory (Storage Means) 7 Audio Decompression / Compression Circuit 8 D / A / A / D Converter 9 System Control Microcomputer 10 Servo Circuit 11 Driver circuit 12 Spindle motor 13 Feed motor 14 Power ON / OFF circuit 15 Head drive circuit 16 Recording head 19 Repeated playback key (playback instruction means) 20 End point adjustment key (point adjustment means) 21 Repeated playback area shift key (repeated playback) Area moving means) 22 End mark key (final position specifying means) 23 Information sound generator

Claims (2)

[Claims] 1. An information recording / reproducing apparatus for temporarily storing information data in a storage means for recording / reproducing information data to / from a recording medium, and a repeat reproduction instruction means capable of instructing repeated reproduction during a reproducing operation, The address of the storage means corresponding to the information data at the time point instructed by the repeat reproduction instruction means is set as the repeat reproduction point, and the information data existing in the address area within a certain range before and after the repeat reproduction point is reproduced and the storage means is also provided. An information recording / reproducing apparatus, comprising: storage control means for stopping storage of information data in the storage medium. 2. An information recording / reproducing apparatus for temporarily storing information data in a storage means for recording / reproducing the information data on / from a recording medium, and a repeat reproduction instruction means capable of instructing repeated reproduction during a reproducing operation. The address of the storage means corresponding to the information data at the time point instructed by the repeat reproduction instruction means is set as the repeat reproduction point, and the information data existing in the address area within a certain range before and after the repeat reproduction point is reproduced and the storage means is also provided. Storage control means for stopping the storage of the information data to the point, point adjustment means for moving the repeat playback point, repeat playback area moving means for moving the address area set in a certain range before and after the repeat playback point, and repeat The playback point is the final position in the recording area of the recording medium. Information recording and reproducing apparatus characterized by and a final position specifying means for recording on the recording medium.