JP2000306371A - Random reproducing apparatus for optical disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a random reproducing apparatus for an optical disk, which can perform a random reproducing operation with reference to a plurality of disks having a specific artist name out of a plurality of disks stored in a disk bank automatically without performing a ocmplicated manual operation. SOLUTION: A CPU 1 which controls an apparatus as a whole in a complex manner is installed. A changer mechanism part 2, a key input part 3, a display part 4, a signal processing circuit 5 and a decoder 9 are connected to the CPU 1. A servo circuit 6, an optical pickup 7, a servo circuit 8, the decoder 9 and a D/A converter 10 are connected to the signal processing circuit 5. Text data on 'disk name, an artist name and the recorded title of a piece of music' or the like which is obtained by the decoder 9 is stored in a RAM 1a connected to the CPU 1. When the artist name is designated by the key input part 3, a corresponding disk is retrieved from data on the artist name stored in the RAM 1a, and the recorded piece of music in the retrieved disk is reproduced at random.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a random playback apparatus for an optical disk, and more particularly to a random or arbitrarily picked-up music piece of an optical disk taken out of a bank portion in which a plurality of optical disks storing a plurality of music pieces are stored. The present invention relates to a random playback device for an optical disc that randomly selects and plays back an image.

[0002]

2. Description of the Related Art In an optical disc such as a CD or an MD recorded by optically recording a plurality of songs, it is necessary for the user to be aware of the waiting time when jumping to an arbitrary song track or searching for a desired track. It can be performed instantly without causing any problems, is very convenient, and has high sound quality, so it is widely used.

In addition to reproducing an arbitrary track of an optical disk, the reproduction order of the music tracks is rearranged for all the music tracks in the disk by using a random number generation method such as an M-sequence, so that each music track is assigned to one track. It is also possible to perform random playback in which playback is performed in a cycle.

Generally, the random reproduction means that the music tracks are reproduced randomly, and the same music track is not reproduced twice, but one set of playing cards is mixed well and one by one. It is sometimes called shuffle playback because it resembles the action of removing a card.

[0005] In addition to performing random reproduction on one disc, a plurality of disc groups are stored,
There is also a random playback device that randomly picks up a disk from among them and randomly selects and plays back the music tracks of the picked-up disk.

More specifically, a plurality of optical discs are stored in a disc bank, a specific disc in the disc bank is moved to a predetermined set position, and the disc is set in an optical signal reading section (reproducing section) and driven to rotate. By reading information on the pit formation surface (recording surface) of the optical disk with a laser beam and performing appropriate signal processing, a reproduction output signal of an arbitrary music track can be obtained.

In such an optical disk random playback apparatus, a plurality of optical disks may be constituted by a CD, an MD, or a mixture of a CD and an MD.

A read-only disc manufactured by a record maker or the like, that is, CD software or MD software may be a text-compatible disc in which text data such as "disc name, artist name, and title of recorded song" is recorded in advance. In this case, it is possible to realize a function of automatically storing these text data in the memory simultaneously with the disc set, taking out the text data from the memory at the time of reproduction, and displaying "disc name, artist name, currently reproduced music name" and the like.

In the case of a recordable CD or MD which can be recorded by a user, the apparatus has a function of manually recording text data such as "disc name, artist name and title of recorded music" according to the user's preference. In this case, the text data is automatically stored in the memory at the same time as the disc set, and a function of removing the text data from the memory at the time of reproduction and displaying “disc name, artist name, currently played song name” and the like can be realized. .

A normal random reproducing apparatus can reproduce a specific song on one specific disk in a normal reproducing mode, and can perform random reproduction for all disks in a random reproducing mode. Alternatively, program random playback can be performed on a plurality of designated disks by setting the program playback mode.

[0011]

In a conventional optical disc random playback apparatus, random playback of a plurality of discs having a particular artist name among a plurality of discs stored in a disc bank is automatically performed. Cannot be performed, but the program can be set by manually setting and operating a plurality of corresponding discs, and only random reproduction in the program mode can be performed.

[0012] For this reason, when performing random reproduction for a plurality of discs of a specific artist, a very complicated manual operation such as an operation of pressing an operation button is required, so that the operability is poor. .

Accordingly, an object of the present invention is to automatically perform random playback on a plurality of discs having a specific artist name among a plurality of discs stored in a disc bank without complicated manual operations. An object of the present invention is to provide an optical disk random playback apparatus that can perform the above-mentioned operations.

[0014]

Means for Solving the Problems In order to solve the above-mentioned problems, the random reproducing apparatus for an optical disk according to the present invention employs the following characteristic configuration.

(1) In an optical disc random reproducing apparatus for randomly selecting and reproducing randomly or arbitrarily picked-up songs of an optical disc taken out of a disc bank portion in which a plurality of optical discs containing a plurality of songs are stored. A memory in which at least artist name data is stored in text data such as "disc name, artist name and recorded song name" of the optical disc, and a specific artist name from the artist name data stored in the memory; And a control unit for searching for at least one optical disc and randomly selecting and playing back the songs recorded on the searched optical disc.

(2) The optical disk of (1) is composed of a CD or MD.

(3) The plurality of optical disks of (1) are constituted by mixing CDs and MDs.

(4) CD of the above (2) or (3)
Alternatively, the MD includes a record of text data corresponding to recorded contents.

(5) The memory of (4) is configured such that text data is automatically stored as the CD or MD is stored in the storage unit.

(6) The memory of any of the above (1) to (4) stores the “disc name” of the CD or MD as the CD or MD is stored in the storage unit. At least artist name data of text data such as "artist name and recorded song name" is manually stored.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. This embodiment is an example in which the optical disc is configured by a text-compatible CD. FIG. 1 is a block circuit diagram showing a circuit configuration of a random playback device for an optical disc according to the present embodiment. FIG. 2 is shown in FIG. FIG. 3 shows the contents stored in the memory.
It is a flowchart for operation | movement description.

In FIG. 1, a CPU 1 is provided for controlling the whole of the random reproduction apparatus for an optical disk in a complex manner, and a changer mechanism 2 is bidirectionally connected to the CPU 1. The changer mechanism 2 randomly or arbitrarily picks up an optical disk (text-compatible CD software) in which a plurality of songs are stored from a disk bank in which a plurality of optical disks (text-compatible CD software) are stored. Move to the corresponding set position,
The set disk is subjected to a predetermined CLV by the servo circuit 6 for spindle control based on the control by the control signal S.
The rotation is controlled so that the optical pickup 7 reads the information recorded on the disc properly, and the tracking thread servo circuit 8 controls the tracking and the thread.

The CPU 1 includes a key input unit 3, a display unit 4,
The signal processing circuit 5 and the decoder 9 are connected, and the key input unit 3
, A signal for designating a playback mode is input, and text data such as "disc name, artist name, and title of recorded song" are displayed on the display unit 4, and the elapsed time and remaining time of the currently played song are displayed. can do.

The signal processing circuit 5 performs predetermined code error correction processing on the signal read by the optical pickup 7, performs EFM modulation demodulation,
(CD TEXT decoder) generates a signal in a form suitable for reproducing text data, and a D / A converter 10 (DAC) generates a signal in a form suitable for reproducing an analog audio signal.

RAM 1 connected to or built in CPU 1
a is a memory for storing at least artist name data of text data such as "disc name, artist name and recorded song name" of the disc, and in this example, a plurality of (200) DISC number data and The artist name data is stored as conceptually shown in FIG.

For example, the artist name of DISC number 1 is Whitney Houston, and DISC number 1
The artist name (group name) of 9 is Chicago and D
The artist name for ISC number 199 is Phil Collins.

The RAM 1a has a DISC number (1 to 1).
200) is stored as text data, as well as disc name data and stored song name data. For example, DISC number 8
Has an artist name of Whitney Houston, a disc name (album name) of 10 songs, "Gift of the breeze," and a storage song name of the first song, "Love is a hand search" and the second song, "All. From "once once"
Up to the 0th song, "Two in a dream" are stored. Similarly, a disc name (album name) and a stored song name corresponding to another DISC number are stored.

Therefore, when the normal reproduction mode is set by the key input unit 3, the key input unit 3
When the SC number is designated, the artist name, the disc name (album name), and the stored song name corresponding to the DISC number are collectively displayed on the display unit 4, or the specific type, that is, "artist name and disc name (album name) and Any of the "stored song names" is sequentially displayed, and the designated song can be reproduced by designating the stored song name (stored song number) with the key input unit 3.

When the random input mode is set by the key input unit 3, "Random play?" Is first determined in step S1 as shown in the flowchart of FIG. And Ye
In the case of s, the determination of "artist mode?" is made in the next step S2, and in the case of No, the normal random reproduction is performed by step S3, that is, all the music stored in the disc bank of the changer mechanism 2 are performed. The random reproduction for the DISC numbers (1 to 200) is started, and the random reproduction is performed until “all songs end?” Becomes Yes in step S4.

If the answer in step S2 is Yes, that is, if the mode is set to the artist mode, the flow advances to the next step S5 to select an artist, that is, to select a key while looking at the list of artist names displayed on the key input section 3. When the artist (Whitney Houston) is designated by the input unit 3, the CPU 1 operates to store the RAM 1
The search for the artist name data stored in a is performed.
1, 2, 8, 17, 21, 21 of the corresponding DISC number
4, 198 (symbols a to g shown in FIG. 2) are specified, random playback is started for the seven discs, and “End all songs?” Is Y in step S4.
Random reproduction is executed until the value becomes es.

The random reproduction for seven disks performed in step S6 is performed on the first disk (D
After random playback of all songs on ISC No. 1), random playback of all songs on the second disc (DISC No. 2), and then all songs on the third disc (DISC No. 8) At random for the fourth to seventh disks (DI
A first mode in which random playback is performed for each of the recorded songs having the SC numbers 17, 21, 24, and 198);
There is a second mode in which random playback is performed for all songs recorded on the seven disks, and the selection between the first mode and the second mode can be determined by the key input unit 3.

It is to be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the present invention. Not only in cases but also with MD,
A plurality of disks may be configured by mixing CDs and MDs.

In addition to an optical disk on which text data is recorded, an optical disk on which no text data is recorded may be used. In this case, it is necessary to input the text data by manual operation. There is.

Further, the memory (RAM 1a) stores a “CD name”, “MD name”, “Artist name and recorded song name” of the CD or MD as the CD or MD is stored in the disk bank of the changer mechanism 2. The key input unit 3 is configured to automatically store at least the artist name data of the text data.
The text data may be stored manually by operating the disk, or text data may be stored automatically by using some of the disks, and text data may be stored manually by using other disks.

[0035]

As is apparent from the above description, the random playback apparatus for an optical disk according to the present invention stores at least the artist name data among the text data such as "disk name, artist name and recorded song name" of the optical disk. And searches for at least one optical disc corresponding to the specific artist name from the artist name data stored in the memory, and randomly selects and plays back the songs recorded on the searched optical disc. Control unit, random playback of multiple discs with a specific artist name among the multiple discs stored in the disc bank of the changer mechanism is automatically performed without complicated manual operation. Can be done

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of a circuit of an optical disc random playback device according to an embodiment of the present invention.

FIG. 2 is a diagram conceptually showing a data storage state of a RAM shown in FIG.

FIG. 3 is a flowchart for explaining a random playback operation of the random playback device for the optical disc shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 1a RAM 2 Changer mechanism part 3 Key input part 4 Display part 5 Signal processing circuit 6 Spindle servo circuit 7 Optical pickup 8 Tracking thread servo circuit 9 Decoder 10 D / A converter

Claims (6)

[Claims] 1. An optical disc random reproduction apparatus for randomly selecting and reproducing randomly or arbitrarily picked-up songs of an optical disc taken out of a disc bank section in which a plurality of optical discs containing a plurality of songs are stored. A memory in which at least artist name data is stored in text data such as "disk name, artist name, and recorded song name" of the optical disk, and a specific artist name among the artist name data stored in the memory. And a control unit for searching for at least one optical disc and randomly selecting and playing back the tunes recorded on the searched optical disc. 2. The apparatus according to claim 1, wherein the optical disk is composed of a CD or an MD. 3. The optical disk random reproduction apparatus according to claim 1, wherein the plurality of optical disks are formed by mixing a CD and an MD. 4. The apparatus according to claim 2, wherein the CD or the MD includes a record of text data corresponding to recorded contents. 5. The memory according to claim 4, wherein the memory is configured to automatically store text data as the CD or the MD is stored in the storage unit. Optical disk random playback device. 6. The memory stores text data such as “disc name, artist name, and recorded song name” of the CD or MD as the CD or MD is stored in the storage unit. 5. The optical disc random reproduction apparatus according to claim 1, wherein at least artist name data is manually stored.