JP2948431B2 - Recording and playback 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 and reproducing apparatus for recording and reproducing information data such as audio data.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for reproducing a disc as a recording medium on which information data such as audio is recorded,
A CD device for reproducing a so-called compact disk (hereinafter, referred to as a CD) is known. In such a CD device, when a predetermined song selected from a large number of songs recorded on a CD is to be reproduced, an input key is used to automatically specify the song number or the like of the song. The song can be played.

As another device of this type, there is an MD device which uses a so-called mini-disc (hereinafter referred to as an MD) which is a magneto-optical disk as a recording medium and is capable of recording on and reproducing the MD. Are known. This M
The D device compresses information data such as audio data in the time axis, digitally records the data in the MD, reads out the information data recorded in the MD, expands the time axis, and reproduces the information. In such an MD device, end point information indicating the end point of a song recorded on the MD can be recorded at the end point of the song recorded on the MD. Therefore, a predetermined song selected from a large number of songs recorded on the MD can be recorded. When the reproduction is to be performed, the above-mentioned end point information is detected based on the operation of the input key, whereby the predetermined music can be automatically reproduced.

[0004]

However, the above CD
When the apparatus repeatedly reproduces a predetermined portion of a selected song, an operation of searching for that portion by fast-forwarding or rewinding is required, and this operation is very troublesome. Also, in a CD device having a function of storing a specified portion of a predetermined song in a memory, the portion can be automatically reproduced by operating an input key, but the power is turned off or the like. , The CD
When the device is taken out of the device, the content stored in the memory is erased, and it is necessary to record the content again. Such a problem is the same in the MD device.

[0005]

[0006]

According to a first aspect of the present invention, there is provided a disk recording / reproducing apparatus for digitally recording information data on a recording medium by a recording means while recording the information data on the recording medium. The read out information data is reproduced by the reproducing means, and the end point information recorded at the end point portion of each information data recorded on the recording medium and indicating the end point of the information data is based on the output from the reproducing means. In the recording / reproducing device which can be detected by the end point recording start input means, the end point position designation input means, the end point position adjustment input means, the end point position storage means, and the reproduction of any information data recorded on the recording medium. In addition, when the above-mentioned end point recording start input means is operated, the position in the information data being reproduced at the time of this operation is set as the end point provisionally designated position. When the end point position adjustment input means is operated, the above-mentioned end point provisionally designated position is moved in accordance with the operation, and the moved position is stored as a new end point provisionally designated position in the end point position storage means. When the end point input means is operated, the recording means is controlled so that the end point information is recorded at the end point provisionally designated position of the recording medium finally stored in the end point position storage means. And control means.

According to a second aspect of the present invention, there is provided a disk recording / reproducing apparatus according to the first aspect of the present invention, wherein the control means controls the provisional end-point designation by operating the end-point recording start input means. When the position is set in the information data, the information is controlled so that the part before and after the temporarily specified end point in the information data is reproduced.

According to a third aspect of the present invention, there is provided a disk recording / reproducing apparatus according to the second aspect , further comprising an end point provisionally designated position notifying means.
The control means activates the end point provisionally designated position notifying means at the time of reproduction of the end point provisionally designated position.

[0009]

[0010]

[0011]

According to the first aspect of the present invention, when the end point recording start input means is operated during reproduction of any information data recorded on the recording medium, the information data being reproduced when this operation is performed is performed. The middle position is stored in the end point position storage means as an end point provisionally designated position. Thereafter, when the end point position adjustment input means is operated, the above-mentioned provisionally designated end point position is moved in accordance with the operation, and the moved position is stored in the end point position storage means as a new provisionally designated end point position. Thereafter, when the end point input means is operated, the end point information is recorded at the end point provisionally designated position of the recording medium finally stored in the end point position storage means. Then, the end point information is than is detectable on the basis of an output from the reproducing means, operating when repeatedly reproducing the portion where the end point information in the information data is set is facilitated. Also, turning off the power of the recording / reproducing device
The same applies to the point that even after the recording medium is removed from the apparatus, the operation of recording the end point information again is unnecessary. Further, in the configuration of the present invention, as described above, the provisional end-point designation position can be moved by operating the end-point position adjustment input means, so that when the end point information is set, the position adjustment becomes easy.

According to the second aspect, in addition to the effects of the first aspect, when the end point provisionally designated position is set in the information data by the operation of the end point recording start input means, the end point in the information data Since the part before and after the provisionally designated position is automatically and repeatedly reproduced, the position adjustment when setting the end point information is further facilitated.

According to the configuration of claim 3 , in addition to the operation of the configuration of claim 2 , at the time of reproduction of the provisionally designated end point, the provisionally designated end point notifying means operates, and the position is reported to the operator. Therefore, the position adjustment when setting the end point information is further facilitated.

[0014]

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. A mini-disc (hereinafter, referred to as MD) device as a disc recording / reproducing device of the present embodiment is configured as shown in FIG. This MD device includes a disk 1 as a recording medium, an optical pickup 2, and an RF amplifier 3. The disk 1 is a rewritable magneto-optical disk, and audio data as information data is recorded in an audio data recording area as an information data recording area. The optical pickup 2 reads data recorded on the disk 1 by irradiating the disk 1 with a laser beam, and records data together with the magnetic head 16 on the disk 1. The RF amplifier 3 amplifies the audio data read by the optical pickup 2 and generates servo control signals such as a focus error signal and a tracking error signal from the audio data.

Further, the MD apparatus includes an encoder / decoder / signal processing circuit 4, a memory controller 5, a shock-proof memory 6 as an end-point position storage means, a voice expansion / compression circuit 7, a D / A / A / And a D converter 8.

The encoder / decoder / signal processing circuit 4 demodulates audio data input from the RF amplifier 3 at the time of reproduction, and performs signal processing such as error correction. Signal processing such as addition of an error correction code is performed on the input audio data. At the time of reproduction, the memory controller 5 writes the audio data input from the encoder / decoder / signal processing circuit 4 into the shock-proof memory 6, reads out the audio data stored in the shock-proof memory 6, and decompresses / compresses the audio. The signal is output to the circuit 7. At the time of recording, the memory controller 5 writes the audio data input from the audio decompression / compression circuit 7 into the shock proof memory 6, reads out the audio data stored in the shock proof memory 6, and outputs an encoder / decoder / signal. Output to the processing circuit 4. The shock proof memory 6 temporarily stores the audio data processed by the encoder / decoder / signal processing circuit 4 during reproduction.
At the time of recording, the audio data processed by the compression circuit of the audio expansion / compression circuit 7 is temporarily stored. Voice expansion
The compression circuit 7 expands the compressed audio data read from the shock proof memory 6 in the time axis by an audio expansion circuit, while the audio compression circuit D / A / A / D
The digital signal input from the A / D converter of the converter 8 is converted into an ATRAC (Adaptive Trans
The data is compressed to about 1/5 by MD information compression technology called "form Acoustic Coding". The D / A / A / D converter 8 converts the audio data input from the audio decompression circuit of the audio decompression / compression circuit 7 into an analog signal by the D / A converter, generates an audio signal, and outputs an audio signal. On the other hand, the A / D converter converts the analog audio signal input from the audio input terminal 18 into a digital signal and supplies the digital signal to the audio compression circuit of the audio expansion / compression circuit 7.

Further, the MD device has a system control microcomputer (hereinafter, referred to as a system control microcomputer) 9 as a control means, a servo circuit 10, a driver circuit 11, a spindle motor 12
, A feed motor 13, a power ON / OFF circuit 14,
Head drive circuit 15, magnetic head 16, music division start key 19 as end point recording start input means, music division end key 20 as end point input means and end point position designation input means, and end point position adjustment input means A division point adjustment key 21 and a notification sound generator 22 as end point provisionally designated position notification means are provided.

The above system control microcomputer 9
As described later, the encoder / decoder / signal processing circuit 4, the servo circuit 10, the memory controller 5, and the power supply are controlled based on the input from the music division start key 19, the music division input key 20, the division point adjustment key 21, and the like. The operation of the ON / OFF circuit 14 and the notification sound generator 22 is controlled.

The servo circuit 10 performs focus servo, tracking servo, seek servo, and spin servo based on a servo control signal input from the RF amplifier 3 and a control signal input from the system control microcomputer 9. , And the driver circuit 11. The driver circuit 11 controls the spindle motor 12 based on a control signal from the servo circuit 10.
And the feed motor 13 is driven. The spindle motor 12 rotates the disk 1, and the feed motor 13 moves the optical pickup 2 and the magnetic head 16 provided so as to move integrally with the optical pickup 2, for example, in the radial direction of the disk 1. The head drive circuit 15 drives the magnetic head 16, and the magnetic head 16 records signals on the disk 1 together with the optical pickup 2.

The music division start key 19 is for instructing the system control microcomputer 9 to start the music division operation during the reproduction operation. Split point adjustment key 21
Is composed of a dividing point advance key and a dividing point retreat key. These operations instruct the system control microcomputer 9 to move the dividing point and adjust the position of the dividing point. The music division input key 20 is a music division start key 19
Alternatively, it is for instructing the system control microcomputer 9 to record the division point set by the division point adjustment key 21.

In this embodiment, the optical pickup 2, the feed motor 13, the driver circuit 11 and the servo circuit 10 constitute a reproducing means, and the optical pickup 2, the feed motor 13, the driver circuit 11 and the servo circuit 10 Head drive circuit 15 and magnetic head 1
6 constitute recording means.

In the above configuration, during reproduction of the present apparatus, the disc 1 is driven to rotate by the spindle motor 12 and the optical pickup 2 is fed in the radial direction of the disc 1 by the feed motor 13 so that the optical pickup 2
Thus, the audio data recorded on the disk 1 is read. This audio data is amplified by the RF amplifier 3 and output to the encoder / decoder / signal processing circuit 4.

Further, in the RF amplifier 3, servo control signals such as a focus error signal and a tracking error signal are generated from the above audio data, and the servo circuit 10
Controls the driver circuit 11 based on the servo control signal input from the RF amplifier 3 and the control signal input from the system control microcomputer 9 so that the focus servo, the tracking servo, and the servo of the spindle motor 12 are performed. Control. This allows
Optical pickup 2 and feed motor 1 by driver circuit 11
3 and the spindle motor 12 are driven.

On the other hand, the audio data output from the RF amplifier 3 is demodulated by an encoder / decoder / signal processing circuit 4, subjected to signal processing such as error correction, and temporarily stored in a shockproof memory 6 by a memory controller 5. Written. Thereafter, the above audio data is read from the shock proof memory 6 by the memory controller 5 and is time-expanded by the audio expansion circuit of the audio expansion / compression circuit 7. This audio data is converted to an analog signal by the D / A converter of the D / A / A / D converter 8,
It is output from the output terminal 17 as an audio signal.

At the time of recording on the disk 1, an analog audio signal input from the audio input terminal 18 is converted to a D / D signal.
The signal is converted into a digital signal by the A / D converter of the A / A / D converter 8, and the data is compressed to about 1/5 by the audio compression circuit of the audio expansion / compression circuit 7. This audio data is temporarily written into the shock proof memory 6 by the memory controller 5 and then read out by the memory controller 5. The audio data read out from the shock proof memory 6 is subjected to processing such as modulation and addition of an error correction code in an encoder / decoder / signal processing circuit 4. The head 16 is driven. At this time, a portion of the disk 1 to which the magnetic field of the magnetic head 16 is applied is irradiated from the optical pickup 2 with a laser beam having an output larger than that at the time of reproduction. Thus, the audio data is recorded on the disc 1.

Next, the music dividing operation of the present apparatus will be described. The disk 1 that is an MD has a disk 1
Area of TOC (Table Of Table)
A lead-in area called “Contents” is formed, and a user TOC area (hereinafter, referred to as a U-TOC area) rewritable by the user is formed on the outer peripheral side immediately after the lead-in area. In the U-TOC area, data is schematically recorded as shown in FIG.
In FIG. n is a U-TO where the address data of the position where the n-th song is recorded is recorded
A value indicating a location in the C area, and A, B, C.
The first and last values of the addresses in the audio data recording area in which the songs to be played in the second, third,... Are recorded. Therefore, at the time of reproduction, first, the PTNO. 1 is read, and then the address at A is read to reproduce the first song. The data of No. 2 is read, and then the address in B is read, whereby the second music is reproduced, and so on.

Here, music is recorded in the audio data recording area of the disk 1 as schematically shown in FIG. 3, and correspondingly, the contents of the U-TOC are as shown in FIG. Shall be. In FIG. 3, the TNO. 1,
TNO. 2, TNO. 3, TNO. 4,... Indicate a track number, and the number below the track number indicates the address of the position where the music is recorded. In this case, the reproduction of the disc 1 is performed by T
NO. 1 → TNO. 2 → TNO. 3 → TNO. Performed in the order of 4 →. Further, ST in FIG. 4 indicates a start address of a position where the music is recorded, and END indicates an end address.

In the recording state as described above, when a predetermined music piece recorded on the disc 1 is divided into a plurality of pieces,
During the reproduction of the music, the music division start key 19 is turned on at the point where the music is to be divided, and that part is designated as a division point. At this time, when the music division start key 19 is turned on, the position of the division point designated by this operation is stored in the shock proof memory 6, and the part for three seconds before and after this division point is repeatedly reproduced. In this reproducing operation, a notification sound is emitted from the notification sound generator 22 at the moment when the music division point is reproduced. By operating the dividing point advance key or the dividing point retreat key of the dividing point adjustment key 21, the above dividing point can be moved. That is, each time the split point advance key or the split point reverse key is operated,
The data as the division point stored in the shock proof memory 6 is updated. The operation at this time is schematically shown in FIG. In this embodiment, it is assumed that the division point is moved forward or backward at intervals of 0.3 seconds of data by one operation of the division point advance key or the division point retreat key.

After that, when the music division input key 20 is turned on, data indicating the division point is recorded at the finally designated position on the disk 1. The data in the U-TOC area of the disk 1 is rewritten accordingly. That is,
In the state shown in FIG. 3, for example, when the fourth music piece is divided in the middle, as shown in FIG. 3 is a new T
NO. 3 and TNO. 4 and FIG.
TNO. 4 is the TNO. 5 so that the subsequent TNO. Shift by one. Further, in the U-TOC region, as shown in FIG.
NO. 3 and TNO. 4, the start address and the end address are changed. In addition, the subsequent TNO. The correspondence between address and address is shifted. That is, the order of the reproduced music is changed.

As described above, by recording the division points on the disk 1, a predetermined music on the disk 1 can be divided into a plurality of pieces, and the U-TOC
Since the information is rewritten, by reading the U-TOC information, the optical pickup 2 is positioned at the above-mentioned division point.
Can be moved immediately, and reproduction from that part can be performed quickly. Also, even if the power is turned off or the disc 1 is removed from the disc recording / reproducing apparatus, the above-mentioned division point and U-TOC information are recorded on the disc 1 and are not erased. Reproduction from a division point is possible without performing an operation.

In the above embodiment, the operation of dividing the music by recording the music division points on the disc 1
U-T is the address of the front part and the rear part of the divided music
Although the operation for recording in the OC is performed, the configuration may be such that only the former or only the latter is performed. For example, in the configuration in which only the former is performed, the position where the music division point is set can be easily reproduced by searching for the music division point based on the output from the optical pickup 2. Further, in the configuration in which only the latter is performed, the U-TOC is read,
By reproducing the rear part of the divided music, the position where the music division point should be set can be easily reproduced.

Further, in the above embodiment, the music division point is recorded on the disc 1 by operating the music division start key 19 and then the music division input key 20. When the music division input key 20 is operated without operating the division start key 19, the music division point is immediately recorded at the position of the music being reproduced on the disk 1 when the music division input key 20 is operated. It may be something. Instead of the notification sound generator 22 for notifying the music division point by the notification sound, a unit for notifying the music division point by light, for example, may be provided.

[0034]

[0035]

As described above, the recording / reproducing apparatus according to the first aspect of the present invention provides an end point recording start input unit, an end point position designation input unit, an end point position adjustment input unit, an end point position storage unit, and a recording medium. When the above-mentioned end point recording start input means is operated during reproduction of any information data recorded in the information data, the position in the information data being reproduced when this operation is performed is set as an end point provisionally designated position. It is stored in the end point position storage means, and when the end point position adjustment input means is operated,
The end point provisionally designated position is moved in accordance with the operation, and the position after the movement is controlled to be stored in the end point position storage means as a new end point provisionally designated position, and when the end point input means is operated, the end point is designated. And control means for controlling the recording means so that the end point information is recorded at the temporary end point designated position of the recording medium finally stored in the position storage means.

Thus, the power of the recording / reproducing apparatus is turned off.
Or the recording medium is removed from the device.
Even if there is, the end point information will not be erased and it will be recorded again.
Work becomes unnecessary. Therefore, the information recorded on the recording medium
Operation when the specified part of the
This has the effect of improving workability. Ma
In addition, since the provisional end point designation position can be moved by operating the end point position adjustment input means, there is an effect that the position adjustment when the end point information is set is easy.

As described above, in the recording / reproducing apparatus according to the second aspect of the present invention, in the recording / reproducing apparatus according to the first aspect of the present invention, the control means operates the end-point recording start input means to set the temporary end point designated position in the information data. Is set so that the part before and after the temporarily specified end point in the information data is reproduced.

Thus, in addition to the effect of the first aspect of the present invention, the portion before and after the temporary end point designation position in the information data is automatically and repeatedly reproduced, so that the position adjustment when setting the end point information is further facilitated. This has the effect of being

As described above, the recording / reproducing apparatus according to the third aspect of the present invention is the recording / reproducing apparatus according to the second aspect of the present invention, further comprising an end point provisionally designated position notifying means, This is a configuration for activating the end point provisionally designated position notifying means.

Thus, in addition to the effect of the second aspect of the present invention, the provisional end point designation position is notified, so that the position adjustment when setting the end point information is further facilitated.

[0041]

[0042]

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an overall configuration of a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic explanatory diagram showing a data recording state in a user TOC area of the disc shown in FIG.

FIG. 3 is a schematic explanatory diagram showing a recording state of data before a division point is set in an audio data recording area of the disc.

FIG. 4 is a schematic explanatory diagram showing a specific recording example of data corresponding to a recording state in a user TOC area shown in FIG. 2;

FIG. 5 is an explanatory diagram of a dividing operation for a predetermined music piece recorded on the disc.

FIG. 6 is a schematic explanatory view showing a data recording state after setting a division point in the audio data recording area shown in FIG. 3;

FIG. 7 is a schematic explanatory diagram showing a specific recording example of data corresponding to the recording state of FIG. 6 in the user TOC area shown in FIG. 4;

[Explanation of symbols]

Reference Signs List 1 disc (recording medium) 2 optical pickup (recording means, reproducing means) 6 shock proof memory (end point position storing means) 9 microcomputer for system control (control means) 10 servo circuit (recording means, reproducing means) 11 driver circuit ( Recording means, reproducing means 13 feed motor (recording means, reproducing means) 15 head drive circuit (recording means) 16 magnetic head (recording means) 19 music division start key (end point recording start input means) 20 music division input key (end point) Input means, end point position designation input means) 21 Division point adjustment key (end point position adjustment input means) 22 Notification sound generator (end point temporary designation position notification means)

Claims (3)

(57) [Claims] The information data is digitally recorded on a recording medium by a recording means, and the information data recorded on the recording medium is read out and reproduced by a reproducing means.
In a recording / reproducing apparatus capable of detecting end point information recorded at an end point portion of each information data recorded on the recording medium and indicating an end point of the information data based on an output from the reproducing means, an end point recording start input Means, an end point position designation input means, an end point position adjustment input means, an end point position storage means, and the end point recording start input means are operated during reproduction of any information data recorded on the recording medium. Sometimes, the position in the information data being reproduced when this operation is performed is stored in the end point position storage means as an end point provisionally designated position, and when the end point position adjustment input means is operated, When the end point input means is operated, the end point temporary designation position is moved and the moved position is stored in the end point position storage means as a new end point provisionally designated position. And a control means for controlling the recording means so that the end point information is recorded at the provisionally specified end point of the recording medium finally stored in the end point position storage means. . 2. When the temporary end point designation position is set in the information data by operating the end point recording start input means, the control means reproduces a portion of the information data before and after the temporary end point designation position. 2. The recording / reproducing apparatus according to claim 1 , wherein the recording / reproducing apparatus controls the recording / reproducing apparatus. 3. A comprising endpoint temporary designated position notifying means, said control means, according to claim 2, characterized in that during playback of the ending temporary designated position is intended to operate the above-described ending temporary designated position informing means Recording and playback device.