JPH03230384A - Optical disk player - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical disc player that uses an optical disc on which a plurality of programs such as music are recorded.

[Prior Art] Conventionally, optical disc players such as compact disc players are known to have a so-called intro playback function. This intro playback function allows you to play the beginning of each recorded music program for a predetermined amount of time, for example.
It is played back sequentially in 15 second increments.

Here, to explain with reference to FIG. 3, when intro playback is commanded using an operation key (not shown), the intro playback program stored in the arithmetic and control circuit section l is started by the intro playback command signal A, and the first song is first played. A control signal B is sent to the pickup servo circuit section 2 so as to reproduce the music program, and the reproduction operation begins.

As a result, pickup information C from pickup 3
is sent to the pink amplifier servo circuit section 2, and the disk reading information in this pink up information C is sent to the signal processing circuit section 4.
The audio signal E and the playback time signal F indicating the elapsed time from the start of playback are separated, and the playback time signal F is fed back to the arithmetic control circuit section 1.

Then, set the time set for intro playback, for example, 15
A control signal B is sent to the pick amplifier servo circuit section 2 so as to proceed to the start address of the second music program when seconds have elapsed.
will be sent. Thereafter, the same process as above is performed, and the beginning portions of each music program are sequentially reproduced. Note that an optical disc (not shown) is rotated by a disc motor 5.

In the flowchart of FIG. 4, when the start of intro playback is commanded, the music program is sequentially played starting from the first song (S1), and it is determined whether the playback time of the song has reached a predetermined time (S2). ).

If the playback time has not reached the predetermined time, the playback of the music program is continued (S3); on the other hand, if the playback time has reached the predetermined time, it is determined whether the music program whose playback ended immediately before is the final music program. (S
4).

The last music program that finished playing just before is the last music program, so after searching for the next music program start 7 trace (S5), return to Sl and start playing, and the last music program ends. If so, end the intro playback.

[Problem to be Solved by the Invention] However, according to the above-mentioned intro playback method, the playback order is the same as the order recorded on the optical disc, so the playback order is the same every time and there is little variation, making it difficult for the user to listen repeatedly. 9 [Means for Solving the Problem] In order to solve the above problem, an optical disc player, such as a compact disc player, has a problem that the music program loses its freshness. In an optical disc player that continuously plays back all or part of each program, such as a compact disc, etc., a different number is assigned to each program, and the most recently played program is excluded. The present invention is characterized in that it is equipped with a random number type reproduction order determining means that sets the program corresponding to the number selected by random numbers from the program group as the next reproduction program.

[For production]

According to the above configuration, since the program to be played next is selected based on a random number from among programs other than the program played immediately before, the selection of the program is performed at random. As a result, the programs are no longer played in the same order each time, allowing the user to enjoy a fresh experience each time they listen.

Note that the playback of programs such as music programs based on the random order determined by the random numbers described above may be performed by playing only the beginning part as an intro play, or each program may be played in its entirety from the beginning to the end. .

〔Example〕

An embodiment of the present invention will be described below based on FIGS. 1 and 2.

As shown in FIG. 1, the optical disc player according to the present embodiment, for example, a compact disc player, has a role as a random number type playback order determining means, and receives an intro playback command signal G by an operation key (not shown), which will be described later. a first arithmetic and control circuit unit 11 that randomly determines a music program to be played as an intro next from a plurality of music programs recorded on an optical disc such as a compact disc, excluding the one played immediately before based on the pickup position signal N; 1
A pickup servo circuit section that operates according to a control signal H from the arithmetic control circuit section 11 and separates the pickup information I from the pick amplifier 16 into a speed control signal J of the disk motor 15, a pickup position control signal, and disk reading information. 12, receives the disk reading information from the pickup servo circuit section 12, separates it into an audio signal M, a pickup position signal N, and a playback time signal O, and outputs the pick amplifier position signal N to the first arithmetic control circuit. A signal processing circuit section 13 feeds back a control signal to the section 11, and an intro playback command signal P from the operation key.
and the playback time signal 0, when the playback time of each music program reaches a preset predetermined time (for example, 15 seconds), the intro playback of that music program is ended,
a second arithmetic control circuit section 14 that transmits a control signal Q to the first arithmetic control circuit section 11 in order to determine the music program to be played next; a disk motor 15 that mounts and rotates the optical disk; It is equipped with a pink-up 16 for reproducing signals.

The operation will be described below. When the first and second arithmetic control circuit sections 11 and 14 receive an intro playback command signal G-P commanded by an operation key (not shown), the pickup 16
The disk reading information extracted from the pickup information I sent from the pickup servo circuit section 12 to the pickup servo circuit section 12 is sent to the signal processing circuit section 13, where the pink amplifier position signal N is separated and sent to the first arithmetic control circuit section 11. The current position of the pink-up 16 is confirmed by being fed back.

After that, the first arithmetic control circuit section 11 randomly determines the music program to be played as an intro first based on the random numbers generated by the built-in random number generator, and then the pickup servo circuit section 12 starts playing the first music program. A start control signal H is sent, and based on this, a speed control signal J is sent from the pickup servo circuit section 12 to the disk motor 15 to instruct the disk motor 15 to start.
6, a pickup position control signal K corresponding to the address where the first music program is recorded is sent.

When intro playback starts, pickup information l is sent from the pink up 16 to the pickup servo circuit section 12, and based on this, a speed control signal J is supplied to the disc motor 15, and the pink amplifier position control signal is supplied to the pickup 16. A signal K is sent.

Furthermore, the disc reading information included in the pickup information I is sent to the signal processing circuit section 13, where it is separated into the audio signal M, the pickup position signal N, and the reproduction time signal 0 as described above. The audio signal M is sent to an audio reproduction unit (not shown) and output as audio, while the pickup position signal N is sent to the first arithmetic control circuit unit 11.
Furthermore, the reproduction time signal O is sent to the second arithmetic control circuit section 14, respectively.

Based on the playback time signal O, the second arithmetic control circuit unit 14 outputs a control signal Q to the first arithmetic control circuit unit 11 when the playback time of the first music program reaches a predetermined time, for example, 15 seconds from the start of playback. to instruct the end of playback of the first music program. In the first arithmetic control circuit section 11, based on the pickup position signal N of the signal processing circuit section 13,
A music program to be played next is determined by the random number generator from music programs other than the music program played immediately before, and a control signal H corresponding to the playback of that track number is sent to the pink-up servo circuit unit 12, and the following steps are performed. , the intro play of the second and subsequent music programs is performed in the same manner as described above.

Here, the random intro playback procedure of the Honten example will be explained once again based on the flowchart in Figure 2.
1 to T for each music program recorded on the optical disc.
+* s x are assigned different song numbers, and one song number is randomly determined from among the above 1 to T e a x by generating random numbers (Sl).

If the determined song number is NR, then it is determined whether the intro of the music program with the song number NR was played immediately before (S2), and if it was played immediately before, the same music program is played continuously. In order to avoid playback, return to Sl and select the song number once again.

Also, if NR has not been played immediately before, the song number N will be played next.
The recording start address of the R music program is searched and playback is started (S3).

Then, it is determined whether a predetermined time has elapsed from the start of playback (34), and if it has not elapsed, the playback of the music program is continued (S5), while if the predetermined time has elapsed, the process returns to Sl. to select the next music program.

In the above embodiment, a case was described in which the intro is played randomly, but for example, if the song number is selected randomly based on random numbers, the music program of the selected song number is played from the beginning to the end of the song. It may also be played back.

In addition to music programs, the programs recorded on the optical disk may be recitations, storytelling, etc., and it is sufficient if a plurality of programs are recorded.

Further, as the optical disc, not only read-only optical discs such as compact discs, but also write-once type and rewritable type optical discs can be used.

[Effects of the Invention] As described above, the optical disc player according to the present invention assigns a different number to each program, and next plays a program corresponding to a number selected by a random number from a group of programs excluding the most recently played program. This configuration includes a random number type playback order determining means for making a playback program.

As a result, the program to be played next is selected based on random numbers from among programs other than the program played immediately before, so that the selection of the program is performed at random. As a result, the programs are played back in a random order each time, allowing the user to enjoy a new experience each time they listen.

[Brief explanation of drawings]

1 and 2 show one embodiment of the present invention. FIG. 1 is a block diagram showing a schematic configuration of an optical disc player. FIG. 2 is a flowchart showing the procedure for intro playback. 3 and 4 show conventional examples. FIG. 3 is a block diagram showing a schematic configuration of an optical disc player. FIG. 4 is a flowchart showing the procedure for intro playback. 11 is a first arithmetic control circuit section (random number type reproduction order determining means)
It is.

Claims (1)

[Claims] 1. From an optical disc that records multiple programs,
In an optical disc player that continuously plays back all or part of each program, a different number is assigned to each program, and the program corresponds to a number selected by random numbers from a group of programs excluding the most recently played program. What is claimed is: 1. An optical disc player comprising random number playback order determining means for determining the next playback program.