JPH0668901B2 - Compact disk - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a compact disc in which an acoustic signal is recorded on a disc by applying an optical technique.

2. Description of the Related Art In recent years, compact discs have begun to spread as a new medium for recording and reproducing music, replacing so-called records that have been conventionally used. In this compact disc, in addition to the music signal, track information indicating a music number and address information in minute / second units indicating a more detailed performance position are recorded. By utilizing this, many compact disc players are configured to be capable of automatic performance by designating a music number and the like.

FIG. 3 shows a conventional compact disc track structure, in which track 1 has voice A, track 2 has voice B, ...
Are recorded in sequence. Voices A, B ... are generally music.

Problems to be Solved by the Invention When using such a compact disc and a player, it is good to correctly specify the track number, that is, the track number, but where the track number should be specified. If you play due to a mistake in the operation without specifying the track number, you will generally play the first track of the disc, track 1, so an unexpected sound may be played back, which may cause inconvenience. .

In view of the above problems, the present invention warns that a track number has not been specified even if the player has accidentally forgotten to specify a track number and specified the track number and started playing by mistake. The present invention provides a compact disc that can be used.

Means for Solving the Problems In order to solve the above problems, the compact disc of the present invention records audio signals to be recorded and reproduced with track numbers 2 and 2.
It is provided with a configuration in which a signal which is recorded thereafter and a signal which gives a warning to the operator is recorded as the track 1.

Action When the compact disc of the present invention is used, if the player plays the track 1 without specifying the track number due to a mistake in operation, even if the player plays the track 1, the content is obviously different from what was planned, and a warning is given. This means that the operator can immediately recognize his or her own operation error and start over.

Embodiment One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the track structure of the compact disc of the present invention. The voices A, B, ... Are arranged after the track 2, and the track 1 is recorded with a word indicating a warning. The word is, for example, "Please specify the track number."

FIG. 2 shows a state diagram when the compact disc of the present invention is applied to an ordinary compact disc player.
When the player is turned on or a new compact disc is installed, the track 1 is ready to play from the beginning. If the track number is specified in the correct procedure and a performance command is issued, the specified track is played. For example, in order to reproduce the sound B on the disc shown in FIG. 1, the track 3 may be designated. When the performance is finished, the program returns to the beginning of track 1 and waits. At this time, if the voice B is on the verge of being reproduced, but if the player mistakenly gives a performance command without designating a track,
The player reproduces the track 1, and the reproduced sound of this track is "specify the track number". Since the performance of this track 1 is completed in a short time, it returns to the beginning of the track 1 and waits. The operator becomes aware of his or her mistaken operation and can then correctly specify the track.

As described above, according to the present embodiment, by using the compact disc in which the signal indicating the warning is recorded on the track 1, it is possible to prevent the undesired reproduction of the undesired voice due to the erroneous operation and the operator. You can inform the wrong operation. Further, as in this embodiment, the addition of recording for a short time, about 5 seconds, has almost no adverse effect on the audio capacity of one compact disk.

In the present invention, the recorded contents of the track 1 may be as follows in addition to the above embodiment.

(1) Mechanical sound such as “Pee” or “Boo” (2) Sound of extremely low frequency near the outside of the audible band or sound of high frequency that is hard to hear by the general human ear.

(3) A chime sound that sounds like "Pon, Pon".

(4) The kind of music that is obviously different from the music after track 2.

(5) Tracks 2 and after are recordings with a significantly different recording level (strength).

(6) Silence recording as a wide-ranging signal representing a warning.

The track used in the present invention is a recording delimiter on the disc and is a unit for designating a performance. In a compact disc, not only tracks but also indexes and sectors are similarly used as units for indicating recording demarcation and designating performance, but it is clear that the present invention is also effective when indexes or sectors are used. .

Further, although the sound is recorded on the track in the present invention, it is clear that the present invention is also effective for the compact disc in which information other than the sound is recorded.

As described above, according to the present invention, when a compact disc having audio signals to be recorded on a plurality of tracks is given a performance instruction by designating a track number, the designated track is played, and the track number is recorded. In the compact disc used in the compact disc reproducing device in which the performance of the track 1 is performed when the performance command is issued without specifying, the audio signal to be recorded is recorded on the track 2 and thereafter, and the track number is designated as the track 1. It has a track that records a signal that warns that there was no such thing, and specifies the track number even if you forget to specify the track number by mistake and specify where you should play It is possible to warn that something has gone wrong, and it is possible to prevent unscheduled sound reproduction.

[Brief description of drawings]

FIG. 1 is a block diagram of a truck according to an embodiment of the present invention, and FIG.
FIG. 3 is a state diagram of a reproducing apparatus using the compact disc of the present invention, and FIG. 3 is a track configuration diagram of a conventional compact disc.

Claims (1)

[Claims] Claims: 1. When a compact disc having audio signals to be recorded on a plurality of tracks is designated as a track number and a performance command is given, a performance of a designated track is performed and a performance command without a track number is given. A signal for warning that the audio signal to be recorded is recorded on and after track 2 and the track number is not designated as track 1, which is a compact disk used in a compact disk reproducing device in which track 1 is played. A compact disc characterized by having a track for recording.