JPS6180661A - Disk record reproducing device - Google Patents

Abstract

PURPOSE:To disply securely a highly-advanced control function with a simple constitution and to improve the operability by providing a display means for displaying that a disk reproduction drive means is positioned corresponding to any one of plural disk mounting parts based on the detection signal from a detection means. CONSTITUTION:A microprocessor 201 judges through an I/O interface circuit 203 the presence or absence of detection signals from detection switches 238 and 239. This judgement depends upon whether or not a mechanical unit 200 exists at the side of a disk A mounting agent, for instance. If said unit 200 is at said side, a tray A display 135a is caused to light up and a control signal for causing a tray B display 135b to go out is given. If said unit 200 is not at said side, the tray B display 135b is caused to light up and a control signal for causing the tray A display 135a to go out is given. Namely, the titled device as a disk reproduction drive means can judges at a glance that the mechanical unit 200 is positioned at either a disk A mounting position 110 or disk B mounting position 111.

Description

[Detailed Description of the Invention] Technical Field of the Invention] The present invention relates to a disc record playback device suitable for, for example, a CD (optical compact disc) type DAD (digital audio disc), and particularly relates to a control system thereof. .

[Technical background of the invention and its problems]

Recently, in the field of audio equipment, a digital recording and reproducing method using PCM (pulse code modulation) technology is being adopted in order to achieve high fidelity reproduction as much as possible.

In other words, this is called digital audio, and the audio characteristics do not depend on the characteristics of the recording medium, and are much more sophisticated than those using conventional analog recording and playback methods. This is because it has been established in principle.

In this case, a system that uses a disk as a recording medium is called a DAD system, and its recording and reproducing methods include optical and electrostatic.

and mechanical systems have been proposed, but no matter which system is adopted, the playback device that embodies it will still satisfy a variety of advanced control functions and performance that are not found in conventional devices. It is required that it be possible.

So, if we take the CD system as an example,
A transparent resin disk with a diameter of 12cyL and a thickness of 1.2cm is coated with a thin film that forms bits (irregularities with different reflectances) corresponding to digital (F'CM) data. Approximately 500 by CLV (linear velocity 1.f -5Z> method)
~ 200 r, p, m It is circularly excited at variable rotational speeds, and is linear tracked from the inner circumference (fill 7) to the outer circumference using an optical pickup with a built-in semiconductor laser and photoelectric conversion element. The disc has a track pitch of 1.6 μm and has a huge [[
The blueprint size is digitized and recorded together with the address data in the program area (radius 25 to 58 mm), and the maximum and minimum song number data, etc. are recorded in the 11-doin area (radius 23 to 25 w, +l). This can easily be seen from the fact that it was recorded digitally.

However, this hard disk record playback device, which has been known for a long time, has not yet been designed to provide excellent operability and display performance in order to satisfy its advanced control functions. This was considered to be an issue that needed to be resolved urgently.

In particular, conventional CD players only have one disc gh! 2+
Only one copy of one disk is loaded in the playback section, and another disk must be newly loaded every time one disk is played, so a certain relationship is established for multiple disks. The problem was that the operability was significantly impaired in that it was not possible to perform organic continuous regeneration operation or arbitrary regeneration operation.

It should be noted that recently, it has been considered that CD players can be applied to commercial multi-disc playback devices such as so-called jukeboxes and karaoke machines, but this is only a form that is suitable only for that type of use. The mere presence of such a device leads to the same level of operability as mentioned above, and it is difficult to meet the demand for improved usability.

[Purpose of the invention]

Therefore, this invention was made in view of the above points, and in particular, it provides a disc record playback tool 1 for playing discs on which digitized data is recorded.
It is our object to provide an exceptionally good disc record playback device that has a simple configuration and is improved to ensure reliable control functions, thereby contributing to the same level of operability. The purpose is

[Invention of invention] In other words, this invention (Koyoru Disc Record 1 Dosei Bag 1 is a system in which both the data to be reproduced S and their address data for one summer are digitized and stored). In the disc record playback system 8, which plays back the discs that have been loaded, the fM'fi's disc loading unit selectively plays back any one of the discs loaded in the plurality of disc loading units. A disc reproducing movement means for driving the disc, a detecting means for indicating which of the fJ number of disc loading sections the disc reproducing cut-off means corresponds to, and a detection signal from the detecting means. It is assumed that the display means for displaying the basis is ``IJiIl'', and that it is a special coincidence.

[Example J1 of the Invention] Hereinafter, the -I'IM sequence of the CD system disc record reproduction Mre to which the present invention is applied will be explained in detail with reference to the drawings.

That is, FIG. 1 shows a front outside view of a double CD player that can selectively play two discs in any format, and shows the cabinet 100.
There is a horizontal loading type A on the left and right of the center of the I1 side.
3 and B disk VC loading parts 110 and 111 are provided so as to be openable and closable. These A and B disk loading sections 11
Eject (aJacT) keys 133 and 134 for opening and closing the A and B disk top portions 110 and 111 are provided at the top of each of the A: F6 and B trays (A-TRAY).

B-T'RAY3 indicators 135a, 135bf, g and channels A16 and B (1, 1-12, respectively)
) Rack number) Track number display devices zssg and tssh are provided.

In addition, a power (POWER) key 112 for connecting/disconnecting the power is provided at the bottom of the disk loading section 110, as well as numeric keys I!3-122 of 0 to 9 and an A-MgMORY key 723. is assumed.

At the bottom of the B disk loading section 111 are a B memory (d-MEMORY) key 124 and a clear (
CLEAR) key 125 and Libby 1- (REP
EAT) key 126 and a repeat indicator 135i are provided.

Additionally, a track number (TNO,

Lap (LAP) indicator 135 d, total recording time (TO'I'AL)! Show #t3se, 4'c'f
A track number/time display 135f with a numerical display of r and a display (DISPI, AY) key 127 are provided.

Furthermore, A and B playback (A-PLAY, B-PLAY) keys 128 are located on the right side of the B disk loading section III.
．． 129, PAUSE key 130, Up (
UP) key 131 and DOWN: '(DOWN) key 1
32 are provided.

FIG. 2 shows the electric circuit system of the double CD player shown in FIG. Input/output (I
lo) It is configured to control the disc playback system 202 described above to a predetermined state via the interface 203, and to display the necessary displays using the display unit 135 including the above-mentioned displays '6135a-135i'. It is something.

That is, assuming that the disc 206 loaded in the A-disk loading section 110 is to be played back, the disc playback system 202 will be operated once upon receiving control signals for each type from the I10 interface 203.

First, when the disk motor 204 and pickup feed motor 205 included in the mechanical unit 200 are activated, the pickup 207 reproduces the data recorded on the disk 206, and sends the reproduced signal to the RF signal detection circuit ZOS. It's been a long time since I've been in the middle of a long time since I've been in the middle of a long time. here,
The RF@# ratio detection circuit 20B is a trix circuit, and has a function of separating the reproduced signal into a signal to be supplied to two servo circuits 220 and 221, which will be described later, and a signal to be supplied to a waveform shaping circuit 222. Of these, the focus servo circuit 221 performs focus servo following the pickup 207, and the tracking servo circuit 221
Reference numeral 20 is set to 1 so as to perform tracking servo on the pickup 2θ7, and send out six types of control that perform linear tracking servo on the pickup feed motor 205.

Then, the reproduction (R
F) The signal directly and through the phase-locked loop circuit 223 are used to perform synchronous IJ branch, sFM 4 key and subcode decoding as the main address.
is supplied to the signal processing circuit 224 of. Among these, the detected address signal passes through the address 41U path 211 to the interface path 203 and the microprocessor 20! (This is a table of contents (T) in the lead-in area on disk 206
The data of oe) is given by R as described below.
A! The Vl 213i is inserted into the system and is used to perform necessary IS control functions such as a search function. Also, it is the address data (track number, gini'; 3+ +
), then .v and ξI.

In addition, the EF'M demodulated playback signal mainly requires 1g
The L/R signal is converted into a digital audio signal by the π2 signal processing circuit 226 for γ2 signal processing in cooperation with the memory 225, and is returned to an analog signal by the D/A conversion circuit 212. Channel separation separator analog switch:! 1. SL.

215 R, low pass filter 216L, 216R, deenophasis control addition a 217 L, 2
17 R・ノF L/te Speakers 218L, 218F
It has a black t-shirt that can be used to communicate and move the t-shirt.

ζThe ROM 214 stores a program 1 for running the microprocessor 201 according to a predetermined program.

Then, the warming of the disc reproducing thread 202 as described above is B
Even when the disk loading section 111j is lit on a loaded disk, the same relationship is established.In this case, the above-mentioned mechanical unit 200 connects the I@2 (from 13) to the I10 interface. Mechanism A = n controlled by control signal B by Moog 230
It needs to be moved to the disk loading section 111 side.

In other words, the double CD pre-key according to an embodiment of the present invention is configured such that an < rx can be achieved with one disk drive playback section to take a predetermined playback mode as needed for the two disk loading sections. .

In addition, in FIG. 2, A and B tray motors 231 and 232 and A and B disk sensors 23 provided in connection with the A3 and B disk loading sections 110 and 111 are shown.
3,234, mechanical unit up/down motor 235,
Mechanical unit up and down limit switch 23
6゜231, mechanical unit position detection switch 238゜2
39 and A and B disk loading section IA close detector 24
0,241 is designed to be able to send and receive necessary control signals to and from the I10 interface circuit 203I.

Next, each of the keys 113 to 113 shown in FIG. 1 and FIG.
134 and each of the display devices 1353 to 135i will be described.

<A disk loading section eject (EJECT) key 13
3> A disk fc side section 1104 If this key is operated during playback of a loaded disk, the playback state is canceled and the disk motor 204 is stopped via the microprocessor 201 and interface circuit 203.
After the laser diode in the pickup is turned off and the pickup 207 returns to the starting position, the disc loading gtt
.

are being ordered to open. Also, the disk loading section xr
If this key is operated while o is open, the disc loading section 110 is closed.

<B disk mounting core eject (El:J ECT
) key 134> A disk loading section eject (EJ)
The B disk loading section 111) is designed to perform the same function as the IECT) key 133.

<Number (0 to 9) keys 113 to 122> These are keys for inputting 4 characters, and are used for specifying a playback song during a search, and for writing to and erasing from memory.

A-Memory (A-MEMOI (Y) key 123)
Numeric key data in RAM? Used when writing to or erasing the A memory channel in JJ.

<B-MEMORY key 124> Numeric key key is used to write or delete numerical key data into the B memory channel in the RAM 213.

Clear (CLIi:AR) key 125〉Used to display the above-mentioned numeric key data when displaying the I]iI meal display height 1351 to the original song number (address, time) display.

3. If the A memory (AMEMORY) key 123 and the clear (CLEAR) key 125 are operated at the same time, the A memory all clear (AMEMORYALLCLgA
R) It has been carefully examined to ensure that it is in perfect condition. In addition, the B memory (BMEMORY) key 124 and the clear (CLE)
AR) When key 125 is pressed 1ci1, B MEMORY ALL CLEAR (BMEMORYALL) is executed.
ci, EAR).

〈 REPEAT (REPEAT)
Key - 1 2 6 〉Each time this key is operated, repeat (■repeat playback) is turned on and off.

However, when the power is turned on, the repeat function is in an off state.

<Display (DiSPLAY) key I27> Each time this key is operated, the display on the track number/time display 735f changes between the track number and index number (TNO,
From the display of X), - when the song elapses i! 1(t, ApTI+v
u:) Furthermore, the synchronized recording time (RgCORDING T
IME).

A-PLAY key 128〉This key can be used alone or with the number (0-9) keys 113-
After performing the 122 operation, there are cases where the player lies down and lies down.

First, when used alone, if the state immediately before operating this key as a manual play mode is a pause state, the pause state will be expelled and the A play state will be entered. There is.

When used in combination with the numeric (0-9) keys 113-122, the search operation state is set, and after the search is completed, the A-play state is entered.

<B-PLAY key 129> This key performs the same operation as the A-play key t2g, but ultimately B-PLAY key 129
The play state and C are different.

<Bose (PAUSE) key 130> If the state immediately before operating this key is the play state,
The play state will be canceled and a pause notice will be issued. In addition, if the operation is performed during a search operation, it will enter a pause state after the search is completed (this is done).

Also, if it is in the pause state or in the state immediately before operating this key, the pause state is canceled, the laser diode being picked up is turned off, and the stop state is entered.

<Up (UP) key 131> When this key is operated, a search operation is performed using the start address of the song corresponding to the TNO advanced by the number of times this operation part is pressed as the target address, and the Afterwards, the state returns to the mode before the search.

<DOWN key 132> When this key is operated, the first operation will perform a search operation using the start address of the currently playing song as the target address, and after the search is completed, the mode will return to the mode before the search. . Furthermore, if operated during the search operation, the target address will be returned in TNO units equal to the number of times this operation section is pressed, in contrast to the case of the up operation section 131 described above.

<A-TRAY display/35 a
> A. Lights up when tray is selected.

<B-TRAY indicator 135b> It is designed to light up when the B-TRAY is selected.

Track number (TNO) display 135c > Track number
It lights up when the time display 1351 is in the show mode or the track display.

<Lap (LAP) indicator 135d> When the display mode of the track number/time indicator 135f is set to display the elapsed time within one song (this lights up).

〈RECORDING TIM
EC) Display r+% 135 e > Track number/time display!
Lights up when the display mode of the 351 is (TOTALJ recording time display).

Track number/time display 1351> This is a four-digit numerical display, and is adapted to display the track number or time in accordance with the operation of the display key i27. In other words, each two digits from the left are TNO when the song number is displayed.

It represents X, and in the case of time display, it represents minutes and 2 seconds.

<A track number display 135g> In this case, 12
I have a channel division and the channel number is TNO.
It corresponds to If the TNO has been memorized, the lamp corresponding to the memorized TNO lights up. During play, the lamp corresponding to the TNO being played flashes.

B track number display 135h>The same operation as the A track number display 135g is performed for the B tray.

<Rebee 1- (REP EAT) indicator 135+> Lights up when the repeat function is on.

According to the double CD player equipped with the above-mentioned a-scratch, the A and B disc loading sections /lo, tt
Load the desired disc into each t and play it in the predetermined playback format.
Just by specifying an, you can play one disc continuously from another to the other (of course, you can also play only the desired songs on each disc), or you can play it endlessly as many times as you want. Since it can be used as a performer of any size, it is very easy to use and easy to operate.

Next, a description will be given of the display function that has been particularly taken into consideration in the implementation of the double CD player as described above.

That is, the display function referred to here means that the mechanism 1 unit 200 as the disk playback driving means described above
This is a function to display the force located on either side of the disk loading section 110°Ill.

This display function is controlled by the microprocessor 2 by the program written in the ROM 214 mentioned above.
01 is shown in FIG. 3, it is levered by controlling each part in FIG. 2 to a predetermined state according to the flowchart shown in FIG.

First, by turning on the POWER key 112 and performing necessary key operations, a predetermined operation such as setting the disc in a predetermined mode as described above and displaying its address data, etc. is performed. will be executed. During this time (including the state before the disc is in the playback drive state), the position of the mechanical unit 200 is constantly detected by the mechanical unit position detection switches 238 and 239. Therefore, in step (2), the microprocessor 201 determines via the I10 interface circuit 203 whether there is a detection signal from these detection switches 238 and 239. The judgment in this step (■) is whether the mechanical unit 20o is
It doesn't matter if it's on flj or not. If the judgment in step (2) is YES, proceed to step (2) and turn on the A training/f display 135a, and turn off the B upper 24 display 135b in step (5). Also, if the ↑U cutoff in step ■ is No, proceed to step ■ and turn on the B upper 24 display 135b, and turn off the A fin 4 display 135a in step ■. A series of steps (1) to (2) are always performed while the microprocessor 201 is operating.

That is, by implementing the above-mentioned instructions, the mechanical unit 2 as a disc playback driving means can be
00 is located in either the A or B disk loading section 110 or 111, so for example, if you want to load and play one disk, the mechanical unit 200 is located in the A or B disk loading section 110, 1
You will be able to choose 11 without hesitation. However, if the mechanical unit 200 is not equipped with such a display function, the A or B disk loading section 110, 111 of the 11111 which is not in the position I' may be mistakenly displayed.
If you select 4, you will need to move the mechanical unit 200 (44 parts 110, 1111) and the time required for the movement ( 4. You will end up with 9 useless ISs. Therefore, having the above-mentioned error display function will simplify the operation, shorten the time lost to disc beginners, and improve disc playback. Since the mechanical and electrical burden on the mechanical unit 200 as a driving means can be reduced, this is a very favorable result.

It should be noted that the present invention is not limited to the embodiments described above and illustrated, and it goes without saying that various modifications and applications can be made within the scope of γ without departing from the gist of the invention.

〔Effect of the invention〕

Therefore, as described in detail above, according to the present invention, a disk record playback device that plays back disks containing digitized data can be easily mass-produced with a simple configuration. It is aJ's goal to provide an extremely good disk record reproducing device that improves the number of discs by increasing the number of discs, thereby contributing to improved operation.

[Brief explanation of drawings]

FIG. 1 shows a disk 1/''-de reproduction disk 1 according to the present invention.
Figure 2 is a block IA configuration diagram showing the chair circuit system of the real multiplication series, and Figure 3 is
It is a flowchart for explaining the functions of the main parts of the service. 113-134... Input operation keys, 135a-13
5i... 81 displays each, 201... microprocessor, 203... I10 interface 1 slot, each! !
13-RAM, 214.-FLOM, 202-Fisk regenerated thread, 110, 111... Part of disc tear, 200
...Mechanical unit for Disk Takao 1 Ryoden.

Claims (1)

[Claims] In a disc record playback device that plays a disc on which a plurality of data to be reproduced and their address data are both digitized and recorded, there are a plurality of disc loading sections and a disc loaded in the plurality of disc loading sections. disc reproducing driving means for selectively putting one of the discs into a reproducing driving state; a detecting means for detecting which of the plurality of disc loading sections the disc reproducing driving means corresponds to; and this detecting means. 1. A disc record reproducing apparatus comprising: a display means for displaying which of the plurality of disc loading sections the disc reproducing driving means corresponds to, based on a detection signal from the disc record reproducing apparatus.