JP3513186B2 - 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 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, in the information recording / reproducing apparatus according to the first aspect of the present invention, the information data recorded on the recording medium is started corresponding to each track number of the UTOC area.
In an information recording / reproducing apparatus which manages by address and end address and temporarily records information data in a storage means to record / reproduce information data to / from a recording medium, a repeated reproduction instruction capable of instructing repeated reproduction during a reproducing operation. Means and the address of the storage means corresponding to the information data at the time point instructed by the repeat reproduction instruction means as a repeat reproduction point, the information data near the repeat reproduction point is reproduced, and The storage control means for stopping the storage and the address on the recording medium are calculated from the repetition point so that the repeated reproduction point is the final position of the recording area of the recording medium, and the resulting information is used as the repeated reproduction point.
Has a final position designating means for writing in the UTOC area of the recording medium as the end address of the track number to which the.

Further, in the information recording / reproducing apparatus of the invention of claim 2, the repetitive reproduction instructing means instructs the repetitive reproduction.
It has a point adjusting means for moving the reproduction point .

[0009]

According to the structure of claim 1, a certain track number is provided.
Information data of the user is temporarily stored in the storage means for playback.
Repeated playback in the storage means while performing
Make the point the final position of the recording area of the recording medium
, Calculate the address on the recording medium from the repeat point
And the resulting information belongs to the repeat playback point.
Of the recording medium as the end address of the track number
Write to the UTOC area and play the track number
Even when limiting the playback area of the bar, the repeated pointing
Information data in the vicinity of the
Therefore, repeat using the information data recorded on the recording medium.
Lower power consumption than when playing back repeatedly
Is possible.

[0010] With the second feature, since it can be moved in the address area where information data is repeatedly reproduced is present, it is possible to improve the operability of the information recording and reproducing apparatus ing.

[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. and, so that the writing and reading of the audio data so as to transfer pointer P <br/> write pointer Q is Ru chase.

Further, the memory controller 5 is set to a first threshold TH _P set to a data capacity for a predetermined time such as 6 seconds, and a data capacity for a predetermined time larger than the first threshold TH _P. It has a second threshold TH _Q.
The memory controller 5 then writes the write pointer Q
When the address difference between the transfer pointer P and the transfer pointer P reaches the first threshold value TH _P , the writing of audio data is stopped, while when the address difference becomes the second threshold value TH _Q , Writing of audio data is started.

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 with respect to 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 1 is read. The writing of audio data from will be 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 up to the second threshold value TH _Q , the disk 1 is restarted.
As a result, the audio data following the interruption is written in the shock proof memory 6, as shown in FIG. 6D. 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 sets the first threshold value TH _P to the data capacity for about 6 seconds, and thus the repeated reproduction area is about 3 seconds in total, and the total is about 3 seconds.
It is possible to shift by seconds. At this time,
The repeated reproduction point (= end point) is not changed by the movement of the repeated reproduction area by the repeated reproduction area shift key 21 . When the end mark key 22 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. Is calculated, and 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]

The information recording / reproducing apparatus according to the first aspect of the present invention stores the information data recorded on the recording medium as described above.
Corresponds to each track number in the TOC area
In an information recording / reproducing apparatus which manages by a start address and an end address , and temporarily stores information data in a storage means to record / reproduce information data on / from a recording medium, repetitive reproduction capable of instructing repetitive reproduction during a reproducing operation. The address of the instructing means and the storage means corresponding to the information data at the time point instructed by the repeat reproduction instructing means is set as the repeat reproduction point, and the information data in the vicinity of the repeat reproduction point is reproduced and the information data to the storage means Memory control means for stopping the memory of
The address on the recording medium is calculated from the repetition point so that the repeated reproduction point is the final position of the recording area of the recording medium, and the resulting information is repeatedly reproduced.
A final position designating unit for writing in the UTOC area of the recording medium as an end address of the track number to which the point belongs is constructed.

By this , information of a certain track number
The data is temporarily stored in the storage means and is played back.
Repeated playback point in the storage means
Repeat so that is the final position in the recording area of the recording medium.
Calculate the address on the recording medium from the
Repeated information on the result is the track to which the playback point belongs.
The UTOC area of the recording medium as the end address of the number
Write to the area and play the track number during the above playback.
Even when limiting the area, information near the repeat point is
Since the report data is read from the storage means and reproduced,
Repeated reproduction using information data recorded on the recording medium
It is possible to reduce power consumption more than
It

In the information recording / reproducing apparatus of the present invention as defined in claim 2, the repeat instructed by the repeat reproducing instructing means is as described above.
This is a configuration having point adjusting means for moving the return playback point .

As a result, it is possible to move the address area where the information data to be repeatedly reproduced exists .
Therefore, 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 Shockproof 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 reproduction key (reproduction instruction means) 20 End point adjustment key (point adjustment means) 21 Repeated reproduction area shift key (repeated reproduction) Area moving means) 22 End mark key (final position specifying means) 23 Information sound generator

   ─────────────────────────────────────────────────── ─── Continued front page       (56) Reference JP-A-4-315866 (JP, A)                 JP-A-4-341988 (JP, A)                 JP-A-4-228164 (JP, A)                 JP-A-4-105270 (JP, A)

Claims (2)

(57) [Claims] 1. The UT stores information data recorded on a recording medium.
Each track number in the OC area and the corresponding track number
In an information recording / reproducing apparatus which manages by information of a start address and an end address , and temporarily stores information data in a storage means to record / reproduce information data on / from a recording medium, repetitive reproduction capable of instructing repetitive reproduction during a reproducing operation. The address of the instructing means and the memory means corresponding to the information data at the time point instructed by the repeat reproducing instructing means is set as the repeat reproducing point, and the information data in the vicinity of the repeat reproducing point is reproduced and the information data to the memory means is stored. a storage control unit to stop storing, so that the final position of the recording area of the recording medium of the above repetitive reproduction point, calculates an address on the recording medium from the repeated point, the repeating reproduction information resulting
An information recording / reproducing apparatus having a final position designating means for writing in an UTOC area of a recording medium as an end address of a track number to which a point belongs . 2. The information recording / reproducing apparatus according to claim 1, further comprising point adjusting means for moving a repeated reproduction point designated by said repeated reproduction instructing means.