JP3037071B2 - Disk 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 disk recording / reproducing apparatus for recording / reproducing an audio signal on / from a disk-shaped recording medium such as a magneto-optical disk.

[0002]

2. Description of the Related Art As an apparatus as described above, there is an MD (mini disc) system. The MD system records an audio signal on a rewritable magneto-optical disk in a digital format. The digitized audio signal is stored in an ATRAC (Adaptive TR).
The data is compressed by a high-efficiency encoding process called an inform Acoustic Coding, and is magneto-optically recorded on the magneto-optical disk.

[0003]

Meanwhile, in a CD player, a so-called CD changer capable of mounting a plurality of discs and selectively reproducing the plurality of mounted discs has attracted attention. As the CD changer, various devices have been developed and sold, from those storing about three disks to those capable of storing up to 100 disks. In recent years, the above-mentioned MD system has attracted attention as a recordable disc device. By using this MD system, a plurality of MD discs are mounted and selectively recorded / reproduced similarly to a CD changer. MD changers are being developed and studied.

[0004] Therefore, the present invention aims to add useful functions by applying to the MD changer as described above, and particularly when recording a broadcast received by a tuner device on a mounted disk. It is intended to provide a disk recording / reproducing apparatus suitable for the above.

Conventionally, broadcast media such as AM tuners and FM
When an audio signal from a tuner or the like is additionally recorded on a disk, a situation occurs in which a user randomly selects an arbitrary disk each time and records data on the selected disk. In such a case, in order to edit the recorded contents of a specific broadcast station on one disc at a later date, the user must edit while confirming the recorded contents one by one, which requires a great deal of labor.

[0006]

According to the present invention, there is provided a tuner device and a disk storage unit for storing a plurality of disks, wherein an audio signal from the tuner device is recorded on the disk. In the disk recording / reproducing apparatus, memory means for storing reception frequency information obtained by the frequency control means of the tuner apparatus and storage location information of the disk stored in the disk storage section in association with each other; When the recording is instructed, a disk associated with the reception frequency information of the broadcast to be recorded, which is obtained from the frequency control unit of the tuner device, is searched from the memory unit. A disk recording / reproducing apparatus provided with control means for performing recording on the disk. .

[0007]

With the above construction, the broadcast contents of the same broadcasting station (ie, the same reception frequency) are additionally recorded on the same disk based on the contents of the memory means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows the structure of a disk storage mechanism of a disk recording / reproducing apparatus according to the present invention. As shown in the figure, the apparatus is a rotating donut-shaped MD disk stocker 19 capable of storing 16 MD disks.
And an MD recording / reproducing unit 29 for recording / reproducing an MD disk disposed in a central portion of the MD disk stocker 19, and a tuner unit 49. In this embodiment, the tuner unit is built in. However, the tuner device may be constituted by a separate housing.

Reference numeral 20 denotes an MD disk insertion slot for inserting an MD disk, and reference numeral 21 denotes a first draw-in for drawing the MD disk inserted from the MD disk insertion port 20 into the MD disk stocker 19. The roller 22 is used to drive the MD disc stored in the MD disc stocker 19 to the MD recording / reproducing unit 2.
9, a MD pull-in sensor for detecting that a MD disk has been inserted into the disk insertion slot 20, and 24 a first pull-in that drives the first pull-in roller 21. A roller drive motor, 25 is a second retraction roller drive motor for driving the second retraction roller 22, 26 is an MD disk stocker rotation roller for rotating the MD disk stocker 19, and 27 is the MD disk stocker rotation roller 26 And 13 is a disc type hole detection switch for driving the MD disc stocker rotating roller driving motor for driving the disc.

In the MD recording / reproducing unit 29 shown in FIG. 1, reference numeral 37 denotes a spindle motor for rotating the MD disk, 38 denotes an optical pickup, 39 denotes a feed motor for driving the optical pickup 38, and 45 denotes an entire apparatus. This is an MD control circuit that performs control.

FIG. 2 is a circuit block diagram showing the configuration of the recording / reproducing system of the apparatus of the present invention shown in FIG. In the figure, reference numeral 36 denotes an analog signal input terminal to which an analog information signal such as an audio signal is input; 35, an A / D conversion circuit for converting the information signal input from the analog signal input terminal 36 into a digital signal; A / D
ATR for compressing a digital information signal output from the conversion circuit 35 and converting it into a highly efficient coded digital signal
An AC processing circuit 33 interleaves the digital signal output from the ATRAC processing circuit 34, attaches an error correction code to the digital signal, and converts the digital signal into a digital signal to which a subcode signal is added. 32 is a head drive circuit. Yes, the output signal from the digital signal processing circuit 33 is converted by the recording magnetic head 31 into a signal for recording on the magneto-optical disk 30.

An optical pickup 38 reads pit data from the magneto-optical disk 30 and converts it into a digital signal. A digital signal processing circuit 40 performs error correction and the like on the signal read by the optical pickup 38. 41 ATRA expands the signal processed by the digital signal processing circuit 40 and returns it to the original digital signal.
A C processing circuit, 42 is a D / A conversion circuit for converting a digital signal output from the ATRAC processing circuit into an analog signal, and 43 is an analog signal output terminal for outputting an analog signal output from the D / A conversion circuit 42. .

A feed motor 39 drives the optical pickup 38 to reciprocate between the inner and outer circumferences of the magneto-optical disk 30. The feed motor 39 receives a tracking error signal output from the optical pickup 38 via a servo control circuit 44. Controlled. 37 is a spindle motor for rotating the magneto-optical disk 30, 14 is a memory, and 15 is a display device.

Reference numeral 45 denotes an MD control circuit for controlling the operation of the entire apparatus as described above. The MD control circuit switches the recording / reproducing, fast-forward, and fast-reverse modes of the mechanism, the timer program setting means 14 and various operation keys (not shown). ), And processes the sub-code data. The digital signal processing circuit 33 and the digital signal processing circuit 4
0, controls the servo control circuit 44, the tuner unit 49, and the like.

FIG. 3 is a diagram showing a cross section of the magneto-optical disk 30. In FIG. 3, reference numeral 50 denotes a lead-in area in which disk information can be reproduced, and 51 denotes a UTO.
Area where recording information can be recorded and reproduced in area C,
52 is a program area in which music information can be recorded and reproduced, and 53 is a lead-out area.

There are two types of MD disks used in the MD system: a recordable disk composed of a recordable / reproducible magneto-optical disk and a prerecorded disk composed of a read-only optical disk.

FIG. 4 shows a cartridge for the recordable disc. The cartridge case 60 has a shutter 64, and the shutter 64 is slid in the direction of arrow D to expose the magneto-optical disk 30 inside the cartridge case 60 through a window (not shown) thereunder. I have. The cartridge case 60 is provided with a disc type hole 63 and an erroneous erasure prevention hole 62 for detecting whether the disc is a read-only prerecorded disc or a recordable and recordable disc. The recording enable / disable is detected on the rewritable disc. 1) When the disc type hole 63 is released: Recordable disc 2) When there is no disc type hole 63: Prerecorded disc, and in the recordable disc, slide the slide member 65 in the direction of the arrow E, 1) When the erroneous erasure prevention hole 62 is closed: recording is possible 2) When the erroneous erasure prevention hole 62 is released: recording is not possible.

FIG. 5 is a circuit block diagram showing the configuration of the tuner section 49. In this embodiment, the tuner unit 49 is an FM tuner. In the figure, 1 is an antenna, 2 is the frequency input from the antenna 1 and V
A mixer for mixing the frequency input from a CO (voltage controlled oscillator) 3, an intermediate frequency amplifier 4 for amplifying the output from the mixer 2, and a demodulator 5 for detecting the output of the intermediate frequency amplifier 4 to demodulate it into music information. A detector 6 is an output terminal for demodulated music information.

Reference numeral 7 denotes a 1 / N counter for dividing the frequency output from the VCO 3, reference numeral 10 denotes a reference frequency oscillator, and reference numeral 8 denotes a phase comparison between the 1 / N counter 7 and the frequency of the reference frequency 10. A phase comparator 9 for outputting a voltage corresponding to the phase difference, and L for integrating the voltage from the phase comparator 8
The VCO 3 outputs a square wave having a different frequency in accordance with the voltage of the LPF 9.

Reference numeral 11 denotes a tuner control circuit for changing the reception frequency by controlling the frequency division ratio of the 1 / N counter 7, and receives an instruction from the user through the operation keys 12. For example, if the reception frequency specified by the operation keys 12 is fIN = 90 MHz, the input frequency of the intermediate frequency amplifier 4 is fIF = 10.7 MHz, so that fV
CO = fIN + fIF = 90 + 10.7 = 100.7M
VCO3 may be controlled so as to be in Hz.

The output of the reference frequency oscillator 10 is set to 100 KH
z, the dividing ratio of the 1 / N counter 7 is N = 10
07, fVCO / N = 100.7 MH
z / 1007 = 100 KHz, and both inputs to the phase comparator 8 are 100 KHz. In this state, VC
O3, 1 / N counter 7, phase comparator 8, LPF 9 P
An LL loop is formed, and a stable fVCO
As a result, the reception frequency fIN = 90 MHz is selected, and the demodulated audio signal is output from the output terminal 6 via the intermediate frequency amplifier 4 and the detector 5.

Therefore, the tuner control circuit 11 can select and receive an arbitrary reception frequency by changing the frequency division ratio of the 1 / N counter 7 in accordance with the reception frequency specified by the operation key 12.

The MD control circuit 45 and the tuner control circuit 11 may be constituted by using a microcomputer or the like. Further, the MD control circuit 45 and the tuner control circuit 11
Are connected to each other by a signal line L so that at least reception frequency information in the tuner unit 49 is transmitted to the MD control circuit 45.

Next, the basic operation of the disk recording / reproducing apparatus of the present invention will be described in detail.

In FIG. 1, when the user tries to insert the MD disk from the MD disk insertion slot 20 (position A), the MD disk insertion sensor 23 detects the MD disk, and thereby the MD control circuit. 45 starts the first draw-in roller drive motor 24 to rotate the first draw-in roller 21 to move the MD disk into the MD disk stocker 19. The MD disc moved into the MD disc stocker 19 is stored in the MD disc stocker 19 (position B).

The MD disc stored in the MD disc stocker 19 is rotated by the second pull-in roller 22 as needed during recording and reproduction.
It is moved to the reproduction position (position C) and mounted on the MD recording / reproduction unit 29. When recording or reproducing another storage disk, the MD control circuit 45 controls the MD disk stocker rotation motor 27 to rotate the MD disk stocker 19 via the MD disk stocker rotation roller 26, and Is moved immediately before the second pull-in roller 22 (position B). Then, as described above, the disk is moved to the disk recording / reproducing position (position C) by the rotation of the second pull-in roller 22, and M
It is attached to the D recording / reproducing unit 29.

Here, an audio signal signal of an arbitrary reception frequency [fA] received from the antenna 1 by the user using the operation keys 6 is recorded on a recordable disk stored in the MD disk stocker 19. Therefore, it is assumed that an instruction is given to the MD control circuit 45.

Operation key 1 in tuner section 49
2 is fIN = fA, and since the input frequency of the intermediate frequency amplifier 4 is fIF = 10.7 MHz, the tuner control circuit 11 determines that fVCO = fI.
VCO so that N + fIF = fA + 10.7 MHz
3 is controlled.

Assuming that the output of the reference frequency oscillator 10 is fout, the division ratio of the 1 / N counter 7 is N = fVCO / f
By setting out, fVCO / N = fout, and both inputs to the phase comparator 8 become fout. In this state, the VCO 3, the 1 / N counter 7, the phase comparator 8,
By forming a PLL loop of the LPF 9 and outputting a stable fVCO from the VCO 3, the reception frequency fIN
= FA is selected, and the demodulated audio signal is output from the output terminal 6 via the intermediate frequency amplifier 4 and the detector 5.
This signal is connected to the analog signal input terminal 36.

Further, the MD control circuit 45 checks the contents of the memory 14, and if there is no disc associated with the reception frequency [fA] in the memory 14, the MD control circuit 45 has the youngest disc storage number among the unused discs. A disk is selected and mounted on the MD recording / reproducing unit 29, and the reception frequency [fA value of the tuner 49 and the disk storage number of the mounted disk are stored in the memory 14 in association with each other. In this way, the storage number of each stored disk and the received broadcast frequency information of the recorded broadcast are stored in the memory 14 in association with each other, for example, as shown in Table 1 below.

[0032]

[Table 1]

In this state, when the user operates the operation keys 16 to instruct the tuner unit 49 to record a broadcast of the reception frequency [fB], the MD control circuit 45
Referring to FIG. 4, a search is made to see if there is a disc on which a broadcast of the reception frequency [fB] has been previously recorded. As shown in Table 1, it can be seen that the disc on which the broadcast of the reception frequency [fB] was previously recorded is the disc with the disc storage number [MD02]. Therefore, the MD control circuit 45 transfers the disk with the disk storage number [MD02] to the MD recording / reproducing unit 29.
To start recording of the broadcast at the reception frequency [fB]. If there is no disc on which the broadcast of the reception frequency [fB] has been previously recorded, recording is performed on an unused disc having the smallest disc storage number. As a matter of course, the memory 14 stores the reception frequency [fB] and the disk storage number of the disk used for recording.

In this embodiment, an example using five discs on which nothing has been recorded has been described. However, even if a disc is already recorded, additional recording may be performed. In this embodiment, the receiving frequency is automatically associated with the recorded disk. However, the receiving frequency may be associated with an instruction from the user. Further, the reception frequency band of the tuner section is also F
Not limited to M, it may be AM or SW.

[0035]

As described above in detail, according to the present invention, there is provided a tuner device and a disk storage portion for storing a plurality of disks, and a disk recording device for recording an audio signal from the tuner device on the disk. In the reproducing apparatus, memory means for storing reception frequency information obtained by frequency control means of the tuner apparatus and storage location information of a disk stored in the disk storage section in association with each other, and recording from the tuner apparatus to the disk Is instructed, a search is made from the memory means for a disk associated with the reception frequency information of the broadcast to be recorded, which is obtained from the frequency control means of the tuner device, and if the relevant disk exists, the disk is searched. Control means for recording to the same disc, so that broadcasts from broadcast stations with the same It would be additionally recorded, Without being recording with the recording of the broadcast from the same broadcaster scattered across multiple disks, can be easily performed editing work.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a mechanism configuration of a disk recording / reproducing apparatus of the present invention.

FIG. 2 is a circuit block diagram illustrating a configuration of an audio signal processing unit.

FIG. 3 is a sectional side view of a main part showing a configuration of a magneto-optical disk.

FIG. 4 is a view showing a recordable disc cartridge.

FIG. 5 is a circuit block diagram illustrating a configuration of a tuner unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Antenna 2 Mixer 3 VCO 4 Intermediate frequency amplifier 5 Detector 6 Output terminal 7 1 / N counter 8 Phase comparator 9 LPF 10 Reference frequency oscillator 11 Tuner control circuit 12 Operation key 13 Disk type discrimination switch 14 Memory 15 Display device 16 Operation Key 19 MD disc stocker 20 MD disc insertion slot 21 First retraction roller 22 Second retraction roller 23 MD disc insertion sensor 24 First retraction roller drive motor 25 Second retraction roller drive motor 26MD disc stocker rotating roller 27 MD Disk stocker rotating roller drive motor 29 MD recording / reproducing unit 30 magneto-optical disk 31 recording magnetic head 32 head drive circuit 33 digital signal processing circuit 34 ATRAC processing cycle 35 A / D conversion circuit 36 Analog signal input terminal 37 Spindle motor 38 Optical pickup 39 Feed motor 40 Digital signal processing circuit 41 ATRAC processing circuit 42 D / A conversion circuit 43 Analog signal output terminal 44 Servo control circuit 45 MD control circuit 49 Tuner Unit 50 lead-in area 51 UTOC area 52 program area 53 lead-out area 60 disk cartridge 62 erroneous erasure prevention hole 63 disk type hole 64 shutter 65 slide member

Claims (1)

(57) [Claims] 1. A disk recording / reproducing apparatus having a tuner device and a disk storage portion for storing a plurality of disks, and recording an audio signal from the tuner device on the disk, wherein the audio signal is obtained from frequency control means of the tuner device. Memory means for associating the received reception frequency information with the storage location information of the disk stored in the disk storage unit, and controlling the frequency control of the tuner device when recording from the tuner device to the disk is instructed. Means for retrieving a disc associated with reception frequency information of a broadcast to be recorded obtained from the means from the memory means, and if there is a corresponding disc, a control means for recording on the disc. Disc recording / reproducing apparatus characterized