KR950006958B1 - Disk auto-changing apparatus and method - Google Patents

Abstract

The automatic disk changer control unit makes many users share a limited number of compact disks and the disk changer. The disk changer controller comprises a selecting key input part for selecting music; a control part controlling the system by decoding selecting signal; a multiple CD changer playbacking the selected song; switches switching playback signals; a plurality of speakers and monitors.

Description

Disc changer control device and method

1 is a cross-sectional view showing the structure of a CD.

2 is a block diagram showing a CD automatic changer control device of the prior art.

3 is a flow chart showing a CD automatic changer control method of the prior art.

4 is a block diagram showing a CD automatic changer control device of the present invention.

5 is a flowchart showing a CD automatic changer control method of the present invention.

* Explanation of symbols for main parts of the drawings

1,20: selection key input unit 2: control unit

3: CD auto changer 4,22: amplifier

5,23: Speaker and monitor 10: CD auto changer selector input

11 CD input key input unit 12 display unit

21: analog switch

The present invention relates to a disc auto changer control device and method, and more particularly, to a disc auto changer control device and method for enabling a plurality of users to share a limited disc and disc auto changer.

In general, a compact disc (hereinafter referred to as a CD) has an area in which a table of contents (TOC) is recorded in a lead in portion of the innermost diameter of a disc, as shown in FIG. The time code for recognizing the playing time and frame of the recorded song, the number of songs and the last time code of the CD, etc. are recorded, so that various controls such as elapsed time, remaining time, and number of songs during playback are possible.

As shown in FIG. 2, a conventional disc changer control device receives a selection key input unit 1 for inputting a user's selection and a selection signal of the selection key input unit 1 to decode and decorate the system. A plurality of CD automatic changers (3) and a CD automatic changer (3) which have a plurality of CDs embedded therein and select one CD to play a selected song under the control of the control unit (2). The amplification unit 4 amplifies the reproduced signal outputted by the control unit 2 and the speaker 5 receives and outputs the amplified signal from the amplifying unit 4.

At this time, the selection key input unit 1 is a CD automatic changer selection key input unit 10 for selecting one of the plurality of CD automatic changer (3), the numbering of the CD recording the selected song and the song number of the selected song A CD selection key input unit 11 for designating a key, and a display unit 12 for displaying the identification number of the designated CD auto changer 3 and the return time of the CD being played. A magazine 3a in which a CD is stored is set so that a player 3a for playing a CD is built in.

Referring to FIG. 3, the operation of the disc changer control apparatus of the related art configured as described above will be described below.

When the user designates the CD auto changer 3 and the song number in the CD and CD through the CD auto changer selection key input unit 10 and the CD selection key input unit 11 of the music selection key input unit 1 for selection, (100 The control unit 2 receives and decodes the music selection signal (101) and supplies power only to the CD auto changer 3 selected by the user (102).

When the power is turned on by the CD auto changer 3 selected by the user, a power on signal is detected (103) and a power rising edge confirmation signal is transmitted to the controller 2 (104). When the CD designated number data and the designated song number data are transmitted to the CD auto changer 3 selected by the user (105), the player 3a of the CD auto changer 3 is driven to play the selected song of the selected CD. (106).

The song sound signal reproduced by the player 3a is amplified by the amplifier 4 and output to the speaker 5. However, Jonghae's disk changer control device has a problem that multiple users can not share the disk changer.

That is, the disc auto changer control device required by several users (M) is equal to the number N of CD auto changers controlled by one disc auto changer control device multiplied by the number of persons, that is, M × N.

In addition, since a plurality of CDs are built in each CD auto changer, the number of CDs required for use by multiple users is M × N × K, resulting in a waste of CDs. Accordingly, an object of the present invention is to provide a disc auto changer control apparatus and method for allowing a plurality of users to share a limited disc and disc auto changer.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. According to the present invention, the automatic disc changer control apparatus receives and decodes a selection signal of the plurality of selection key input unit 20 and the plurality of selection key input unit 20 for inputting the user's selection as shown in FIG. A plurality of CD automatic changers (3), each of which has a plurality of CDs built therein, so that the control unit (2) selects one CD and plays a selected song according to the control; 2) an analog switch 21 for switching the playback signals output from the plurality of CD auto changers 3 and a plurality of amplifiers 22 for amplifying the playback signals passing through the analog switch 21; And a plurality of speakers and a monitor 23 connected to the amplifying unit 22 and outputting a reproduction signal of a selected song. At this time, each of the plurality of selection key input unit 20 is composed of a CD automatic changer selection key input unit 10, a CD selection input unit 11 and a display unit 12, as in the prior art, the plurality of CD automatic changer (3) It was also made in the same configuration as the prior art.

The operation of the disc changer control device of the present invention configured as described above will be described with reference to FIG.

First, when the user designates the number of the CD auto changer (3), the CD number, and the number of the selected song by using the selection key input unit (20) (200), the control unit 2 decodes the selection song signal and selects it. The playing time of the song is calculated (201) and the song information of the reserved song is stored in each selection key input unit (20) (202).

After the above process, as shown in Table 1), as shown in Table 1, a reservation time schedule for the reserved song information of all the selection key input units 20 is prepared to check whether the CD automatic changer 3 is commonly accessed for each time zone. (204) In the case of the reservation time schedule shown in Table 1), the same song of the same CD automatic changer 3 is simultaneously reserved by the different music selection key input unit 20 as in 1). If one CD auto changer (3) is reserved at the same selection key input unit 20, such as whether the other CD in the CD auto changer (3) has been reserved with a slight time difference (206), the case 3), another CD auto changer ( It is detected whether or not the one CD auto changer 3 and the other CD auto changer 3 are reserved one after another at a time difference in the other music selection key input unit 20 in the reserved state.

TABLE 1

[A, B, C, D are CD auto changer numbers, superscript 1,2,3,4 are CD numbers, and superscript 1,2,3,4 represent song numbers]

After the above process, the reservation time schedule is updated, and in case of 208, in case of 1), the same switching signal is generated by different selection key input units 20 so that the same song can be shared, and in case of case 2), according to the order of reservation time. 3) to reserve one CD auto changer (3) in one selection key input unit 20, and to reserve another CD auto changer (3) first in another selection key input unit (20). After controlling the automatic changer 3 and generating a switching matrix according to the control of the CD automatic changer 3 (209) to control the analog switch 21 according to the generated switching matrix (210) And reproduced songs are output to the monitor 23 (211).

As described above, the present invention can share a limited number of discs and a disc changer automatically, thereby improving disc reproduction efficiency.

Claims (2)

A plurality of selection key input unit 20 for inputting the selection key of the user, a control unit (2) for controlling the system by decoding the selection signal of the plurality of selection key input unit 20, selection by the control of the control unit (2) A plurality of CD automatic changers (3) for reproducing old songs, a switch (21) for switching the playback signal output from the CD automatic changer (3) under the control of the control unit (2), and the switch (21) Disc changer control device characterized in that composed of a plurality of speakers and the monitor 23 for outputting a playback signal. Specifying the number of the CD auto changer (3), the CD number, and the number of the selected song, the first step (200, 201, 202) of calculating the playing time of the selected song and storing the song information of the reserved song, Second step (203, 204) to check whether the CD automatic changer (3) is commonly accessed for each time zone by creating a schedule of reservation time for the same time, the same song of the same CD automatic changer (3) in different selection key input unit 20 Step 3 (205, 206) of detecting whether the reservation is made at the same time or another CD in the same CD automatic changer (3) at a time difference. 3) and another CD auto changer (3) are sequentially booked, and it is detected whether or not one CD auto changer (3) and another CD auto changer (3) are booked in sequence at a time difference from another selection key input unit 20. The fourth step (207), the reservation time day And a fifth step (208, 209, 210, 211) of controlling a switch (21) and playing a CD according to the switching matrix generated by updating the schedule and generating a switching matrix according to the process 205, 206, 207.