JP3037069B2 - 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.

In view of the above, the present invention aims at adding useful functions by applying the above-described MD changer. In particular, when performing timer recording, the same timer program (recording day and recording start) is used. (The same end time) is recorded on the same disk every time.

[0005] For example, there are many programs that are broadcast regularly in the same time period, such as weekly (or monthly), such as radio broadcast music programs, foreign language courses, and continuous novels. It is conceivable that these are periodically and continuously recorded on the disc mounted on the MD changer by timer recording. However, the apparatus searches for an empty disc based on a timer program set by the user. Recording at random would result in a continuous program being scattered and recorded on multiple discs, and the user would have to search across multiple discs later to find where the next record of the program was. It is very inconvenient.
As a matter of course, it takes a great deal of effort to combine (copy and re-record) continuous programs recorded and scattered on a plurality of discs into one disc.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a disk storage section for storing a plurality of disks, and a timer program setting means for setting a plurality of timer programs. In a disk recording / reproducing apparatus which performs timer recording on a disk stored in the disk storage unit according to a timer program setting, the timer program setting means uses the timer program corresponding to each of a plurality of timer programs for timer recording. It is intended to provide a disk recording / reproducing apparatus having a recording control means for performing timer recording by the same timer program only for the corresponding disk.

[0007]

With the above configuration, the disk used for timer recording by the timer program set by the timer program setting means is specified, and all timer recording by the same timer program is performed on the same disk. Will be

[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 device 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 11 is a disc type hole detection switch for driving the MD disk stocker rotating roller.

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. . The process of signal processing at the time of reproduction is the same as that described above in the case of a pre-recording disk for reproduction only.

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. Reference numeral 37 denotes a spindle motor for rotating the magneto-optical disk 30.

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. The MD control circuit 45 may be constituted by a microcomputer.

Further, 10 is a memory for storing disk information and the like, 9 is a display device for displaying information stored in the memory, 12 is a clock circuit for detecting the arrival of a timer time, and the MD control circuit 45 Is provided for performing timer recording based on the contents of a timer program described later. Reference numeral 13 denotes a backup power supply (for example, a lithium battery or the like) for holding the contents of the memory;
Is a timer program setting means for setting a timer program. The timer program setting means 14 can be the same as the timer function used in conventional audio equipment, video equipment, and the like, and the details are omitted here.

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. 5 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.

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 an MD disk from the MD disk insertion slot 20 (position A), the MD disk insertion sensor 23 detects the MD disk, and 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 / reproducing another storage disk, the MD control circuit 45 controls the MD disk stocker rotation motor 27 to rotate the MD disk stocker 15 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
The D recording / reproducing unit 29 is mounted.

Next, timer recording which is a feature of the present invention will be described.

First, it is assumed that a user sets a timer program as shown in Table 1 below using the timer program setting means 14.

[0025]

[Table 1]

The timer programs shown in Table 1 are stored in the memory 10, and the registered timer programs are given setting numbers.

If it is assumed that 12:00 on Sunday has come, the MD control circuit 45 determines from the data from the clock circuit 12 that the timer program of the setting number [3] is applicable. The MD control circuit 45 stores the stored 5
The disk with the storage number [MD01] is selected from the sheets.
At this stage, since no disk has been used for recording yet, the disk with the lowest storage number is selected.

Next, the analog audio signal output of the tuner section 49 is guided to the analog signal input terminal 36 as shown in FIG. 2 and recorded on the disk of the storage number [MD01] according to the timer program (setting number [3]). Is performed, the MD control circuit 45 updates the contents of the memory 10 as shown in Table 2 below.

[0029]

[Table 2]

In the future, the disk on which the program of the timer program of the setting number [3] is recorded will be the disk storage number [M
D01].

Thereafter, when the time set in each timer program comes, recording is performed on each storage disk, and as a result, each disk is associated with the five timer programs as shown in Table 3 below.

[0032]

[Table 3]

After another week has passed, Sunday 1
At 2:00, the MD control circuit 45 refers to the contents of the memory 10 and determines that the disk to be used for recording is the disk with the disk storage number [MD01]. Then, the program contents of the second week are recorded in the free area of the disk.

When the recording on each disk is sequentially performed in the same manner, the recorded content on each disk is, for example, as shown in FIG.
become that way. In this example, the disk storage number [MD0
1], the program [Hit Box JAPAN] for the disc with the disc storage number [MD02], the program [Go game] on the disc with the disc storage number [MD03], and the disc storage number [MD0].
4], the program [Today's cuisine] is recorded on the disc of the disc storage number [MD05], and the program [Classic evening] is recorded on the disc of the disc storage number [MD05]. Therefore, each program by the timer program is recorded scattered on a plurality of discs. Never.

[0035]

As described above in detail, according to the present invention, there is provided a disk storage unit for storing a plurality of disks, and a timer program setting means for setting a plurality of timer programs. In a disk recording / reproducing apparatus for performing timer recording on a disk stored in the disk storage section according to the setting of the disk, a disk used for timer recording corresponding to each of a plurality of timer programs by the timer program setting means. And the recording control means for performing the timer recording by the same timer program only on the corresponding disc is provided, so that the timer recording by the same timer program is performed only on the specific disc corresponding to the timer program. So the contents of the timer recording are scattered across multiple disks It will not be recorded me.

[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 showing a configuration of an audio signal processing portion of the disk recording / reproducing apparatus of the present invention.

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

FIG. 4 is a diagram showing a recording state of a disc.

FIG. 5 is a diagram showing a cartridge of a recordable disc.

[Explanation of symbols]

Reference Signs List 9 display device 10 memory 11 disk type hole detection switch 12 clock circuit 13 backup power supply 14 timer program setting means 19 MD disk stocker 20 MD disk insertion slot 21 first pull-in roller 22 second pull-in roller 23 MD disk insertion sensor 24 First pull-in roller drive motor 25 Second pull-in roller drive motor 26MD disk 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 circuit 35 A / D conversion circuit 36 Analog signal input terminal 37 Spindle motor 38 Optical pickup 39 Feed motor 40 D 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 section 50 Lead-in area 51 UTOC area 52 Program area 53 Lead-out area 60 Disk cartridge 62 Erroneous erasure Prevention hole 63 Disc type hole 64 Shutter 65 Slide member

Claims (1)

(57) [Claims] 1. A disk storage unit for storing a plurality of disks, and a timer program setting means for setting a plurality of timer programs, wherein the disk storage unit is stored in the disk storage unit in accordance with the settings of the timer programs. In a disk recording / reproducing apparatus that performs timer recording on a disk, a disk used for timer recording is associated with each of a plurality of timer programs by the timer program setting unit, and timer recording by the same timer program is performed. A disc recording / reproducing apparatus, comprising: a recording control means for performing only on the corresponding disc.