JPS6180660A - Disk record reproducing device - Google Patents

Abstract

PURPOSE:To display securely a highly-advanced control function and to improve the operability by providing plural disk mounting parts, disk reproduction drive means, reproduction disk command means, repeat command means, disk detection means and control means. CONSTITUTION:The titled device is provided with plural disk mounting parts, disk reproduction drive mans for selectively causing any one of disk mounted on these plural disk mounting parts in a reproduction drive state, reproduction disk command means which gives to the disk drive means the reproduction command that any one of disks mounted on plural disk mounting parts is selected and reproduced, and a repeat means for instructing the repetition of the reproduction command with the aid of the reproduction disk command means. A disk detection means for detecting whether or not disks are mounted on plural disk mounting parts respectively and a control means are provided.

Description

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

[Technical background of the invention and its problems]

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

This is called digital audio, and the audio characteristics are not dependent on the characteristics of the recording medium, and are much superior to those using the conventional Anamag recording and playback method. This is because it is established in principle.

In this case, a system that uses a disk as a recording medium is called a DAD system, and optical, electrostatic, and mechanical recording and reproducing methods have been proposed. Regardless of which method is adopted, the playback device that embodies it is required to be able to satisfy various advanced control functions and performance that are not found in conventional devices. There is.

In other words, if we take the CD system as an example,
CLV (Linear Velocity - Pallet) Approximately 500~200r (depending on method)
, p, m, and is reproduced in a linear tracking manner from the inner circumferential side to the outer circumferential side using an optical pickup incorporating a semiconductor radar and a photoelectric conversion element. The disk has a diameter of 1.6 μm, and even one side has a diameter of about 1.6 μm.

A huge amount of information that can perform one hour of stereo playback is digitized and recorded in the program area (radius 25 to 58 vm) along with address data, and the maximum and minimum song number data etc. are stored in the lead ino area ( This can be easily seen from the fact that the discs are recorded in Ik format (radius 23-25m)K7''). (Since a device with excellent operability and display performance that satisfies this advanced control function has not yet been realized, it was considered an issue that needed to be solved urgently.

In particular, conventional CD players have only one disk loading section for one disk drive playback section, and each time one disk is finished playing, another disk must be newly loaded. However, there is a problem in that operability is significantly impaired in that it is not possible to perform organic continuous playback operations or arbitrary playback operations that have a certain relationship with the disc.

In addition, in recent CD players, so-called Tsuyuri d
? Although it has been considered to be applied to commercial multi-disc playback devices such as wax karaoke machines, it is only a form that is suitable for that type of use, and it is not possible to achieve true operability as described above. It was not possible to meet the demands of improving jockey skills and improving ridership.

[Purpose of the invention]

Therefore, this invention has been made in view of the above points, and is particularly applicable to a disc record playback device that plays back a disc on which digitized data is recorded. ?
The object of the present invention is to provide an extremely good disc record playback device that has been improved so that it can reliably perform advanced control functions with a simple configuration, thereby contributing to improved operability. [Summary of the Invention] That is, the disc record playback device according to the present invention is a disc record playback device that plays back a disc on which a plurality of data to be played and their address data are both digitized. means for selectively putting any one of the discs loaded in the plurality of disc loading parts into a reproduction driving state; and selecting which one of the discs to be loaded in the plurality of disc loading parts. a reproduction disk command means for giving a reproduction command to the disk reproduction drive means to determine whether to play the disc; a repeat command means for instructing the reproduction disc command means to repeat the reproduction command; disc detecting means for detecting whether or not a disk is loaded; When a repeat reproduction command is given, it is determined based on the detection signal from the disk detection means whether or not a disk is loaded in any one of the plurality of disk loading sections, and the disk is loaded. a first control signal that repeatedly causes the other disks and the one disk to enter the playback driving state following the end of the playback drive of the one disk, or when the first control signal does not repeat the playback drive of the one disk; and control means for applying a second control signal to the disc reproduction drive means to set the disc reproduction drive state.

[Embodiments of the invention]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a CD type disc record reproducing apparatus to which the present invention is applied will be described below in detail with reference to the drawings.

That is, Fig. 1 shows a front view of a double CD player that can selectively play two discs in any format.
On the left and right sides of the front center of the 0, there are horizontally loading type B disk loading sections 110 and 111 that can be opened and closed. These Ap and B disk loading sections 110
．． 111 has the above writing and B disk loading section 1.
10.111 EJECT keys 133 and 134 for opening and closing are provided, as well as A and B trays (A-TRAY).

B-TRAY) indicators 135m and 135b, and track number indicators 135g and 135h of λ and B(rack number) for channels 1 to 12, respectively, are provided.

Further, a power (POR) key 112 for connecting and disconnecting the power is provided at the bottom of the A disk loading section 110, as well as numeric keys 113 to 122 of 0 to 9 and A memory (
A-MEMORY) key 123 is provided.

At the bottom of the B disk loading section 111 are a B memory (CB-MEMORY) key 124 and a clear (
CIJAR) key 125 and REPEA
T) A key 126 and a repeat indicator 135I are provided.

Further, above the B disk loading section 11, there is a track number (TNO, X) display 135c.

Lap (LAP) display 135d, total recording time (TOTAL) display 135e, 4-digit numerical track number/time display 135f, and display (D
ISPLAY) key 127 is provided.

Further, on the right side of the B disk loading section 111, there are A and B playback (A-PLAY, B-PLAY) keys 1.
28°129, PAUSE key 13o1 UP dt -731 and DOW
N) *-132 is provided.

FIG. 2 shows the electric circuit system of the double CD player shown in FIG. The input/output (I
lo) It is configured to control a disc playback system 202, which will be described later, to a predetermined state via an interface 203, and to make necessary displays using a display unit 135 including the aforementioned displays 135a to 1351.

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! It is driven by receiving various control signals from the 7'0 interface 203.

First, when the disk motor 204 and pickup feed motor 205 included in the mechanical unit 200 are driven, the pickup 207 reproduces the data recorded on the disk 206 and sends the reproduced signal to the RF signal detection circuit 208. It is done as if it were sent out.

Here, the RF signal detection circuit 208 is not an IJ circuit, but has a function of separating the reproduced signal into a signal to be supplied to two subcircuits 220 and 221, which will be described later, and a signal to be supplied to a waveform shaping circuit 222. have. Of these, the focuser circuit 221 is
Focus Sage on 07, and Tora,
The king siren circuit 220 performs a tracking siren for the pickup 207, and also sends out various controls for making a linear tracking siren for the pick-up feed motor 205.

Then, the reproduction (R
F) The signal is supplied directly and via the phase locked loop circuit 223 to a first signal processing circuit 224 which mainly performs synchronization signal separation for address detection, EF'M demodulation and Sara code decoding. Among these, the detected address signal is supplied to the interface circuit 203 and the microprocessor 201 through the address signal bus 211, and it is sent to the read address signal on the disk 206.
Table-op content (TOC) in the in-area
If the data is RAM 2 by the operation described below.
1J and used to perform necessary control functions such as the 1 search function. Further, if it is address data in the program area on the disk 206 (such as track number 9 hours), it can be used to create a necessary display.

In addition, the EFM demodulated playback signal is converted into a digital audio signal by a second signal processing circuit '226 IC that mainly performs necessary signal processing such as deinterleap, error correction, and error correction in cooperation with the memory 225. After being converted into an analog signal by the D/A conversion circuit 212, the channel separation analog switch 215
L.

215R, O-a Sufu 4 kll 216L, 216R
, Fa・xn7 assist control amplifier 217L, 2
It is designed to be used to drive the speakers 218L and 218R to produce sound through the 17Ft.

Note that the ROM 214 is written with program data for driving the microprocessor 201 according to a predetermined program.

The function of the disk reproducing thread 202 as described above is B.
A similar relationship is established for the disks loaded in the disk loading section 111, and in this case, the above-mentioned mechanical unit.

The disk 200 needs to be moved toward the B disk loading section 111 by the mechanical A#B movement motor 23-0, which is controlled by the control signal from the I10 interface circuit 203.

Finally, a double CD player according to an embodiment of the present invention is configured such that a single disk drive playback section can change a predetermined playback mode to two disk loading sections as necessary. be.

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 A and B disk loading sections 110 and 111 are shown.
3,234, mechanical unit, door, f down motor 235,
Mechanical unit up and down limit switch 23
6゜237, mechanical unit position detection switch 238゜2
39 and A and B disk loading section open/close detector 240
, 241 are designed to be able to send and receive necessary control signals to and from the I10 interface circuit 203.

Next, each of the keys 113 to 113 described above based on FIG. 1 and FIG.
134 and the functions that can be achieved by each of the displays 135a to 1351 will be described.

Disk loading section EJECT key 13
3> If this key is operated during playback of a 7"4 disk loaded in the A7' disk loading section 110, the playback state will be canceled, and the disk mome 204 will be stopped via the microprocessor 201 and interface circuit 203. Then, after the radar diode during start-up turns off and the pickup F207 returns to the starting position, the disk loading section 1
10 is opened. Also, the disk loading section 1
When this key is operated with the disc loading section 110 open and in position A, the disc loading section 110 is closed.

(EJECT key 134) A disc loading section (EJECT) key 134
T) Disk loading section 111 with the same function as the key 133
It is designed to play about.

Keys 113 to 122 (Number formats O to 9) Keys for inputting numbers, used to specify playback songs during a search (to find the beginning of a song), and to store or erase a song in the memory.

<A-Memory (A-Escape MORY) key 123> This key is used to write or erase numerical key data in the A memory channel of the IM 21J.

B-MEMORY key 124 is used to write or erase numeric key data (written to the B memory channel in RAM 213).

<CLEAR key 125> This key is used to change the song number display 135f, which is currently displaying the above-mentioned numeric key data, to display the original song number (address, time).

Note that if the A-Memory (A-Mliχ0RY) key 123 and the Clear (CLEAR) key 125 are operated at the same time, the A-Memory all clear (A-Mory
LCIJAR) is in operation. In addition, if the B/Memory CB-(MORY) key 124 and the clear (CLEAR) key 125 are operated at the same time, the B/Memory all clear CB part MORY ALL C
IJAR) is in an operational state.

<REPEAT> key 126> Repeat (repeated playback) is turned on and off each time this key is operated.

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

<Display (DISPLAY) key 127> Each time this key is operated, the display of the song number/time table Suisei 135f changes between the track number and index number (TNO,
The display changes from the display of X) to the elapsed time of one song (LAPTI section) and then to the synchronous recording time (RECORDINGTI section).

A-PLAY key 128〉 This thousand- is used alone, and number (O~9) keys 113~
There are cases where the operation is performed subsequent to the operation of 122.

First, when used alone, if the direct spinner operating this key in manual play mode is in a pause state, the pause state is canceled and the A-play state is entered.

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

<B-PLAY key 129> This key operates in the same way as the A-PLAY key 128, except that it finally enters the B-PLAY state.

PAUSE key 130> If the state immediately before operating this key is the play state,
The play state is canceled and the I-Z state is entered. Furthermore, if the operation is performed during a search operation, it will return to a pause state after the search is completed.

If the state immediately before operating this key is a pause state, the pause state is canceled, the radar diode being picked up is turned off, and the stop state is entered.

<A, D (UP) key 13> When this key is operated, a search operation is performed with 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 search is completed. 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 search song mode. Become. Furthermore, if operated during a search operation, the target address will be returned in units of TNO by the number of times this operation section is pressed, in contrast to the case of the up operation section 131 described above.

<A-TRAY (A-TRAY) indicator 735 &> Lights up when A-TRAY is selected.

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

〈Tora Kunanbar (TNO) indicator 135c〉Track number 1
Lights up when the display mode of the time display 135f is the track number display.

Lap 7' (LAP) display 135d> Lights up when the display mode of the track number 8 hour display 135f is to display the elapsed time within one track.

Recording time (RECORI) INGTTM
E) Display 735@>Track number 1 Lights up when the display mode of the hour display 135f is (TOTAL) recording time display.

(Track number 1 hour 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 disc gray key 127. In other words, each 92 digits on the left side represent TNO and X when the track number is displayed, and minute 1 when the time is displayed.
It is designed to represent seconds.

(A) U, number indicator 1 ss g) In this case,
It has 12 channels, and the channel numbers correspond to TNO. If it has been memorized, the lamp corresponding to the memorized TNO lights up. During play, the lamp corresponding to the TNO trap you enter will light up.

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

<REPEAT indicator 135i> Lights up when the repeat function is on.

According to the double CD player having the above-mentioned functions, the A and B disc loading sections 110 and 11 are installed in advance.
By simply loading the desired discs into each disc and specifying the desired playback format, you can play continuously from one disc to the other (of course, it is also possible to play only the desired songs from each disc). It is extremely easy to use and has excellent operability, as it allows you to perform endless performances such as repeating the same sequence as many times as you like.

Next, in one or more embodiments of a double CD player, control functions that are particularly considered will be described.

In other words, the control function here means that when the repeat mode is detected, the A and B disks loaded in the A and B disk loading sections 110 and 111 are
It is a function that plays these discs continuously according to the number of discs (denoted as B discs).For example, if there is one disc, it is a function that controls the playback of only one disc, and if there are two discs, it is a control function that repeatedly plays both discs. . In this case, when each disc is played back, if a predetermined side is designated in advance, it goes without saying that only that designated song section will be played repeatedly across each disc.

This kind of control function is provided by the ROM mentioned above.
According to the program written in 214, the microderosse 201 is executed by controlling each part of FIG. 2 to a predetermined state as described later in accordance with the chart 70 shown in FIG.

First, at the time of START in FIG. 3, for the sake of explanation, it is assumed that a command to reproduce the disc is issued, but the actual situation is not limited to this. Then, in the step, the microprocessor 201 detects that the AFF PLAY key 128 is operated.
For example, if the A disk detection signal from the A disk sensor 233 in FIG.
203, and determines whether or not the A disk falls; if YES, proceed to the next step (2) and make necessary playback preparations such as clamping operation for positioning the A disk. After that, in the next step (2), the playback operation for the A disk is performed. In the next step (2), it is determined whether or not lead-out data indicating the playback end point of the A disc has been detected. If NO, the process returns to the above step (2) and continues the playback operation of the tAr disk.
If so, proceed to the next step ■. In this step ■, the microprocessor, 2
01 makes the decision.

Here, the repeat mode is the above-mentioned repeat (REPE).
This is done by operating the AT) key 126, and when the repeat mode is specified, the repeat indicator L351 mentioned above is lit. If the judgment in step (2) is YES, the process proceeds to the next step (2), where the micro sensor 201 detects, for example, the B disk from the B disk sensor 234 in FIG.
Disk detection signal ■7-sided interface circuit 203
It is determined whether or not there is a B disk. If the determination at step (2) is YES, the process proceeds to the next step (2) to make the necessary preparations for reproducing the B disc, and then performs the reproducing operation for the B disc at the next step (2).

In the next steps (2), (2) and (2), it is determined whether or not the end point of the disk has been detected, and it is also determined whether or not it is the repeat mode P. here,
If the repeat mode judgment at step [stock] is NO, proceed to the next step @ and end the playback, but if YES
If it is S, go back to the above step and return the above steps ① to ＠ (in green), resulting in a so-called 2/billes repeat.

Further, if the O judgment in the above steps and deOs is No, the process returns to the steps after the above steps, and only the A disk is repeatedly reproduced.

In addition, if the judgment in step ① above is No, that is, there is no A disk, proceed to the next step @ and repeat B as described above.
Determine the presence or absence of a disk.

The decision in this step @ is YES (pB disk)
In this case, go back to step ① above and repeat playback of only the B disc.

And, the judgment of Ste, De ■ or 0 is No TsufiA
If both disks and B are not present, immediately step f@
The VC progresses and the playback ends.

This is the same even when there is only one of the KAi or B7'' disks and the repeat mode is not set, as described above.

In other words, by providing the control function 11k as described above, it becomes possible to repeatedly play back the discs in a continuous manner according to the number of loaded discs. can be taken as a thing.

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

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, it is possible to reliably perform advanced control functions with a simple configuration, especially in a disc record playback device that plays back a disc on which r-notalized data is recorded. improved,
Therefore, it is possible to provide an extremely good disc record playback device that contributes to improved operability.

[Brief explanation of the drawing]

Fig. 1 is a front external view showing an embodiment of a disc record playback device according to the present invention, Fig. 2 is a block configuration diagram showing an electric circuit system of the embodiment, and Fig. 3 is a main part of the embodiment. This is a 70-chart to explain the function. 113-134... Input operation keys, 135a-13
51...Various indicators, 201...Microprocessor,
203...I10 interface each, 21
3...RAM, 214...ROM, =902...
- Disc playback system, 110, 111... Disk loading section, 200... Mechanical unit for driving disk playback.

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, a plurality of disc loading units and one of the disc loading units loaded in the plurality of disc loading units are provided. a disk playback drive means for selectively putting one disk into a playback driving state; and a playback disk for giving a playback command to the disk playback drive means to select and play back which one of the disks loaded in the plurality of disk loading sections. a commanding means, a repeat commanding means for commanding the repetition of the reproduction command by the reproduction disc commanding means, a disc detection means for detecting whether or not a disc is loaded in each of the plurality of disc loading sections, and the disc reproducing means. a detection signal from the disk detection means when the drive means is in a playback driving state in which any one of the disks loaded in the plurality of disk loading sections is selected and a repeat playback command is given by the repeat command means; determines whether or not a disc is loaded in any other of the plurality of disc loading units, and when the disc is loaded, following the end of the playback drive of the one disc, the other disc and a first control signal that repeatedly puts the one disk into a playback driving state; or, when the first control signal does not apply, a control that repeatedly sends only the one disk to a playback driving state and a second control signal to the disk playback driving means; 1. A disc record playback device comprising: means.