JPH087453A - Disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To easily and rapidly recognize information such as the kind of a housed recordable disk in an MD changer capable of plurally housing MD disks. CONSTITUTION:Whether the MD disk housed in an MD disk stocker 19 is a recordable disk which can be recorded and reproduced or a prerecorded disk used only for reproducing is detected by a disk kind hole detection switch 17 and also whether the recordable disk can be recorded or not is detected by a safety hole detection switch 16, then obtained information is stored in a memory 10. The disk information stored in the memory 10 is displayed on a display device 9 if necessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording / reproducing apparatus for reproducing information signals such as audio signals recorded on a disc-shaped recording medium such as a magneto-optical disc.

[0002]

2. Description of the Related Art As an apparatus as described above, there is an MD (mini disk) system. The MD system records an audio signal on a rewritable magneto-optical disk by a digital method, and the digitized audio signal is an ATRAC (Adaptive TR).
Data is compressed by a high-efficiency encoding process called "amorphous acoustic coding", and magneto-optically recorded on the magneto-optical disk.

[0003]

By the way, in a CD player, a so-called CD changer which allows a plurality of discs to be mounted and selectively reproduces the plurality of mounted discs has been attracting attention. Various devices have been developed and sold in the CD changer, from those having a capacity of about 3 disks to those capable of accommodating up to 100 disks.

In recent years, the above-mentioned MD system has been attracting attention as a disc device capable of recording data. By using this MD system, a plurality of MD discs can be mounted to selectively record and reproduce data as in a CD changer. So to speak, the development and examination of MD changers are underway.

However, there are two types of MD discs used in the MD system, a recordable and reproducible magneto-optical disc (hereinafter referred to as a recordable disc) and a read-only pre-recorded disc. Therefore, when many discs are stored in the MD changer, it is detected whether the stored discs are pre-recordable discs that cannot be recorded or recordable recordable discs (magneto-optical discs). In order to do so, the disc must be mounted on an MD recording / reproducing unit for recording / reproducing, and the time required to transfer the disc from the storage part of the disc to the MD recording / reproducing unit and the time required for the disc detection by the MD recording / reproducing unit, etc. Therefore, there is a problem that the disk cannot be detected quickly.

[0006]

In order to solve the above-mentioned problems, the present invention has a disk storage section for storing a plurality of disks, and disk recording for selectively recording and reproducing the disks stored in the disk storage section. In the reproducing device, a disc type detecting means for detecting whether the disc is a disc for exclusive use of reproduction or a recordable / reproducible disc before the disc is accommodated in the disc accommodating part, and a disc for accommodating the disc accommodating part. Disc recording / reproducing detection means for detecting recording / non-recording of a recordable / reproducible disc before storing, and memory means for storing information from the disc type detecting means and the disc recording / non-recording detecting means. And a disc recording / reproducing apparatus provided with display means for displaying information stored in the memory means. It is an.

[0007]

With the above-mentioned structure, the information about the disc type stored in the memory means and the disc recordability /
Information about unrecordable is displayed by the display 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.

First, FIG. 1 shows the structure of a mechanical portion of a disk recording / reproducing apparatus of the present invention. As shown in the figure, the apparatus records and reproduces a rotating donut-shaped MD disc stocker 19 capable of accommodating 16 MD discs and an MD disc arranged in the central portion of the MD disc stocker 19. An MD recording / reproducing unit 29 is provided.

Reference numeral 20 is an MD disk insertion slot for inserting an MD disk, 21 is a first drawing roller for drawing the MD disk inserted from the MD disk insertion opening 20 into the MD disk stocker 19, 2
2 is the MD stored in the MD disc stocker 19
A second pull-in roller for pulling the disc into the MD recording / reproducing unit 29, and an MD 23 for detecting that the MD disc has been inserted into the disc insertion opening 20.
A disc insertion sensor, 24 is a first pull-in roller drive motor for driving the first pull-in roller 21, and 25
Is a second pull-in roller drive motor for driving the second pull-in roller 22, 26 is an MD disc stocker rotating roller for rotating the MD disc stocker 19, and 27 is an MD disc stocker rotating roller for driving the MD disc stocker rotating roller 26. A drive motor, 16 is an erasure prevention hole detection switch, and 17 is a disk type hole detection switch.

In the MD recording / reproducing unit 29 shown in the figure, 37 is a spindle motor for rotating the MD disk, 38 is an optical pickup, and 39 is a feed motor for driving the optical pickup 38.

FIG. 2 is a circuit block diagram showing the structure of the recording / reproducing system of the device of the present invention shown in FIG. In the figure, 36 is an analog signal input terminal to which an analog information signal such as a voice signal is input, 35 is an A / D conversion circuit for converting the information signal input from the analog signal input terminal 36 into a digital signal, and 34 is The A / D
ATR for compressing the digital information signal output from the conversion circuit 35 and converting it into a highly efficient encoded digital signal
An AC processing circuit 33 is a digital signal processing circuit for interleaving the digital signal output from the ATRAC processing circuit 34, adding an error correction code, and converting it to a digital signal to which a subcode signal is added, and 32 is a head drive circuit. The output signal from the digital signal processing circuit 33 is converted into a signal for recording on the recordable disk 30 by the recording magnetic head 31.

Reference numeral 38 denotes the recordable disc 3
An optical pickup for reading pit data from 0 and converting it into a digital signal, 40 is a digital signal processing circuit for performing processing such as error correction on the signal read by the optical pickup 38, and 41 is processed by the digital signal processing circuit 40. A signal is expanded and restored to the original digital signal A
TRAC processing circuit, 42 is a D / A for converting a digital signal output from the ATRAC processing circuit into an analog signal
The conversion circuit 43 is an analog signal output terminal for outputting an analog signal output from the D / A conversion circuit 42.
In the case of a pre-recorded disc for reproduction only, the process of signal processing during reproduction is the same as above.

Further, 39 is a feed motor for reciprocally driving the optical pickup 38 between the inner circumference and the outer circumference of the recordable disk 30, and a tracking error signal output from the optical pickup 38 causes a servo control circuit 44 to drive the same. Controlled. 37 is a spindle motor for rotating the recordable disk 30.

Reference numeral 45 denotes an MD control circuit for controlling the operation of the entire apparatus. The mechanism is switched to each mode of recording / reproducing / fast-forwarding / fast-returning and processing based on an input signal from the key input terminal 49 and processing of subcode data. Then, the digital signal processing circuit 33, the digital signal processing circuit 40, the servo control circuit 44, etc. are controlled. The MD control circuit 45 may be composed of a microcomputer.

Reference numeral 10 is a memory for storing disk information, and 9
Is a display device for displaying the information stored in the memory.

FIG. 3 is a view showing a cross section of the recordable disc 30. In FIG. 3, 50 is a lead-in area where disc information can be reproduced and 51 is a UTOC area where recording information can be recorded and reproduced. , 52 is a program area in which music information can be recorded and reproduced, and 53 is a lead-out area.

Further, FIG. 4 shows an MD disk cartridge. In the figure, reference numeral 64 denotes a shutter, and the shutter 64 slides in the direction of arrow A to expose the disc inside the cartridge through a window (not shown) therebelow. Further, the cartridge case 60 is provided with a disc type hole 63 and an erroneous erasure prevention hole 62, which are used to detect whether the disc is a pre-recordable disc for reproduction or a recordable / recordable disc, and a recorder. Recordable / unrecordable is detected on the Blu-ray disc. That is, 1) when the disc type hole 63 is open: a recordable disc 2) when the disc type hole 63 does not exist: it is a prerecorded disc, and in the recordable disc, 1) when there is no erroneous erasure prevention hole 62: recording Possible 2) When the erroneous erasure prevention hole 62 is open: recording is not possible.

Next, the operation of the device of the present invention will be described.

In FIG. 1, when the user tries to insert an MD disc through the MD disc insertion slot 20, M
The D disc insertion sensor 23 detects the MD disc.
As a result, the MD control circuit 45 activates the first pull-in roller drive motor 24 to activate the first pull-in roller 21.
Rotate the MD disc to MD disc stocker 1
9 Move inside.

While the MD disc is moving inside the MD disc stocker 19, the disc type hole detecting switch 17 detects the type of the inserted MD disc. The structure of the disc type hole detection switch 17 is, for example, as shown in FIG. 5, and this figure shows a cross section near the disc type hole 63 of the cartridge case 60 of the recordable disc 30. The hole 63 is a depressed hole.

The disc type hole detection switch 17 is
A spherical or cylindrical roller 70 movable in the vertical direction (direction of arrow B) with respect to the disc type hole 63 is provided, and the MD control circuit 45 causes the first pull-in roller drive motor 24 to be detected by the MD disc insertion sensor 23. When the MD disk is stored in the MD disk stocker 19, the cartridge case 60 of the MD disk moves while rotating the roller 70.

At the position where the roller 70 is engaged with the disc type hole 63, if the disc type hole 63 is vacant, the roller 70 is lowered and the switch 71 is turned off, while the disc type hole 63 is closed. In that case (there is no disc type hole 63), the roller is raised and the switch portion 71 is turned on. Therefore, depending on the time timing, the rotation angle of the first pull-in roller 21, the MD disc insertion sensor 23, and the like, the MD control circuit 45 causes the state of the disc-type hole detection switch 17 at the timing when the roller 70 is engaged with the disc-type hole 63. 1) the disc type hole detection switch 17 is OFF: a recordable disc 2) the disc type hole detection switch 17 is ON: a pre-recorded disc can be detected.

When the MD disc is further moved, the erroneous erasure prevention hole detection switch 16 detects the state of the erroneous erasure prevention hole 62 of the disc cartridge 60 of the MD disc in the same manner as the disc type hole detection switch 17.
The erroneous erasure prevention hole detection switch 16 also has the same structure as the disc type hole detection switch 17, and when the erroneous erasure prevention hole 62 is vacant, the switch roller is lowered and the erroneous erasure prevention hole detection switch 16 is turned off. On the other hand, when there is no erroneous erasure prevention hole 62, the switch roller is raised and the erroneous erasure prevention hole detection switch 16 is turned on.
Therefore, the MD control circuit 45 checks the state of the erroneous erasure prevention hole detection switch 16, and 1) the erasure prevention hole detection switch 16 is turned on: a recordable recordable disc 2) the erasure prevention hole detection switch 16 is OFF: A recordable disc that cannot be recorded can be detected. And MD disc is MD
It is stored inside the disk stocker 19 (position B).

The disc information obtained as described above is stored in the memory 10 connected to the MD control circuit 45 and further displayed on the display device 9 as required.

The MD discs stored in the MD disc stocker 19 are moved to the disc recording / reproducing position (position C) by the rotation of the second pull-in roller 22 as needed during recording / reproducing, and the MD recording / reproducing unit 29.
Be attached to. Then, when recording / reproducing another storage disc, the MD control circuit 45 controls the MD disc stocker rotation motor 27 to rotate the MD disc stocker 19 via the MD disc stocker rotation roller 26, thereby obtaining a desired MD disc. Is moved to a position immediately before the second pull-in roller 22 (position B). Then, similarly to the above, by the rotation of the second pull-in roller 22, it is moved to the disc recording / reproducing position (position C) and mounted on the MD recording / reproducing unit 29.

With this configuration, when the MD disc is inserted, the recordable disc and the prerecorded disc are detected, and the recordable / non-recordable state of the recordable disc is detected, and the disc information is stored in the memory 10. Since it is stored, it is not necessary to mount the MD discs on the MD recording / reproducing unit one by one, so that the information of each stored MD disc stored in the memory 10 can be quickly displayed on the display device 9. Even in the case of recording an audio signal from an external device or the like on the recordable disc, it has an excellent effect that the recordable disc set to be recordable can be found easily and instantly.

[0028]

As described above in detail, according to the present invention, a disc recording / reproducing device has a disc accommodating portion for accommodating a plurality of discs and selectively records / reproduces the discs accommodated in the disc accommodating portion. In the device, a disc type detecting means for detecting whether the disc is a read-only disc or a recordable / reproducible disc before the disc is stored in the disc storage unit; A disc recordable / non-recordable detecting means for detecting recordable / non-recordable of a recordable / reproducible disc prior to storage, and a memory means for storing information from the disc type detecting means and the disc recordable / non-recordable detecting means. Since the display means for displaying the information stored in the memory means is provided, it is possible to detect the disc type when the disc is inserted. And disc recordable / unrecordable detection is performed, it is possible to display these disc information on the display device when needed, is extremely beneficial.

[Brief description of drawings]

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

FIG. 2 is a circuit block diagram showing a configuration of an audio signal processing portion of the disc recording / reproducing apparatus of the present invention.

FIG. 3 is a side sectional view of an essential part showing the structure of a recordable disc (magneto-optical disc).

FIG. 4 is a view showing a cartridge of a recordable disc (magneto-optical disc).

FIG. 5 is a diagram showing a configuration of a disk type detection switch.

[Explanation of symbols]

 9 display device 10 memory 16 erroneous erasure prevention hole detection switch 17 disc type hole detection switch 19 MD disc stocker 20 MD disc insertion opening 21 first pulling roller 22 second pulling roller 23 MD disc insertion sensor 24 first pulling roller drive motor 25 Second pull-in roller drive motor 26 MD disk stocker rotary roller 27 MD disk stocker rotary roller drive motor 29 MD recording / reproducing unit 30 recordable disk (magneto-optical disk) 31 recording magnetic head 32 head drive circuit 33 digital signal processing circuit 34 ATRAC processing Circuit 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 key input terminal 50 lead-in area 51 UTOC area 52 program area 53 lead-out area 60 disc cartridge 62 erroneous erasure prevention hole 63 disc Type hole 64 Shutter 70 Roller 71 Switch part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G11B 19/12 501 N 7525-5D 27/34 P 9369-5D

Claims (1)

[Claims] 1. A disc recording / reproducing apparatus having a disc storage portion for storing a plurality of discs and selectively recording / reproducing the discs stored in the disc storage portion, wherein the discs are stored in the disc storage portion. Disc type detection means for detecting whether the disc is a read-only disc or a recordable / reproducible disc, and a recordable / recordable disc that can be recorded / reproduced before the disc is stored in the disc storage section. Disk recordable / unrecordable detecting means for detecting unrecordable, memory means for storing information from the disk type detecting means and disk recordable / unrecordable detecting means, and a display for displaying information stored in the memory means A disc recording / reproducing apparatus comprising: