JPH02101691A - Introduction scanning method - Google Patents

Abstract

PURPOSE:To easily recognize the content of music by shifting start time in introduction scan from music head, and performing introduction reproduction on the middle way of the music. CONSTITUTION:When an introduction scan key 9a provided at an operating part 9 is depressed, a system controller 6 changes respective introduction reproduction start position from the head of each music to a position after the lapse of prescribed time, and reproduces the prescribed time after the start time. As the time not being reproduced from the head of each music to the introduction start position, arbitrary time can be set by an introduction skip time setting volume 9b provided at the operating part 9. In such a way, it is possible to move an introduction reproducing part fitting in the music desired by a user or the field of the music, and to easily recognize the content of the music without extending introduction reproducing time.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an intro scanning method that sequentially plays back the beginning part (intro part) of each side recorded on a CD, DAT, cassette tape, etc. , especially regarding an intro scanning method that makes it easy to understand the content of a song.

<Prior art> Jump to the beginning of the song one after another, and hold the beginning part for a predetermined time (for example, 10
Conventionally, there is a function called In1~Mouth/Scan that plays back (about 1 second). According to such an intro scanning method, for example, in the case of a CD, it is possible to get an idea of what songs are on the disc, easily find the song you want to listen to, and it is possible to easily find the song you want to listen to. It can be used as a help.

<Problem to be Solved by the Invention> However, in the conventional intro scanning method, when the song is played for, say, 10 seconds from the beginning (see Figure 5), the intro part, such as in recent popular songs, cannot be played. If there are many songs that have similar names, it is often difficult to distinguish the content of the songs, and if the song does not appear, it is difficult to understand the content of the song. On the other hand, if the intro playback time of each side is increased to 20 seconds or 30 seconds, the total time required will be longer, which will be inconvenient for the user.

From the above, an object of the present invention is to provide an intro scan method that makes it easy to understand the content of a song by shifting the start time (playback) of the intro scan from the beginning of the song and playing the intro from the middle of the song. be.

<Means for Solving the Problems> The above problems are solved in the present invention by means of changing the start position of intro playback to a position after a predetermined time has elapsed from the beginning of the song;
This is achieved by means for reproducing the portion after the start position for a predetermined period of time.

Effect> The start position of intro playback is changed to a position after a predetermined time has elapsed from the beginning of the song, and the portion after the start position is played for a predetermined time.

<Embodiment> FIG. 1 is a block diagram of a CD player that implements the present invention.

In the figure, 1 is a CD (compact disc),
For example, as shown in FIG. 2(a), the first song Mtt, the second song M2. Third song M3. ... is included. Reference numeral 2 denotes an optical pickup that optically reads digital information recorded on the CDI and inputs it to the signal processing circuit 4 via the RF amplifier 3.

The signal processing circuit 4 demodulates the EFM signal input from the RF amplifier 3, separates the audio data and subcode, performs error detection/correction processing on the audio data, and inputs it to the D/A converter 5. The information read from the subcode and the lead-in area of the CD is input to the system controller 6.

The D/A converter 5 D/A converts the 16-bit audio data input from the signal processing circuit 4, and inputs the output to the audio circuit 7, which outputs audio from a speaker (not shown). .

The system controller 6 stores the lead-in area information input from the signal processing circuit 4 in the memory 6a, and also analyzes the Q channel of the input subcode to determine the current song number, elapsed time for each song, etc. Data indicating the total elapsed time, etc. is extracted and displayed on the display section 8 as appropriate.

The system controller 6 also performs the intro scan process of the present invention based on information input through the operation unit 9.

The operation unit 9 is provided with an intro scan key 9a, an intro skip time setting volume 9b, and the like.

1o is a servo circuit, which connects optical pickup 2 to CDI.
1 racking servo unit to follow the eccentricity of C
It includes a focusing servo unit that focuses light on the signal plane of D1, a feed servo unit that drives a feed motor (sled motor) 11, and a CLV servo unit that rotates a spindle motor 12 at a constant linear velocity.

FIG. 2 is a timing chart showing an intro playback portion according to the present invention.

When the intro scan key 9a provided on the operation unit 9 is pressed, the system controller 6 scans each surface M1. M
, , M, , . . . The intro playback start position of each song is changed to the position T1 □, T2 □, T3 □, . ．． T
,,,T□0. ...The following 10 seconds, for example, are played back.

Note that each surface M, , M2. M3. The non-playing time from the beginning of ... to the intro playback start point iT□□, Tyo□, 'r,,... (in 1 to mouth skip time) St is 1,
An arbitrary time can be set using the intro skip time setting volume 9b provided on the operation unit 9. For example, by setting it to 5 seconds or 15 seconds, the intro playback start position T1□, 'r2□, Tj□, . ... can be varied. With this configuration, the intro playback portion can be moved according to the user's preference or the genre of the song.

FIG. 3 is a timing chart showing the intro playback volume according to the present invention.

In the present invention, since the sound is output from the middle of one song, it is conceivable that a loud volume may suddenly be output.

To prevent this, the system controller 1-0-6 sends a fade-in/fade-out control signal F to the audio circuit 7.
Outputs I/FO and controls volume during intro playback.

With this volume control, for example, during the first 3 seconds of intro playback, the volume is gradually increased (fade-in), the last 3 seconds are gradually decreased (fade-out), and the volume at the beginning and end is sloped. I have it. Control signal FI
/FO is output in synchronization with the time information held by the system controller 6, and causes the audio circuit 7 to perform the above-described fade-in/fade-out operation to make the intro playback sound easier to hear.

FIG. 4 is a flowchart of the process of the present invention, and the operation of FIG. 1 will be explained below in accordance with the flowchart of FIG. 4.

First, the intro scan key 9a is pressed.

When intro scan is instructed (step 101)
, the system controller 6 detects the beginning of the song based on the CDI information input from the signal processing circuit 4 (step 102).

When the beginning of the song is detected, the position is, for example, 10 seconds after the beginning of the song (Ti, , T, □ shown in FIG. 2).

T31. . . . ) is detected (step 103), and intro playback is started from this position (step 104).

During intro playback, the volume is gradually increased for about 3 seconds and fades in (step 105), and then playback is performed for about 4 seconds at the specified volume, in other words, at a volume faithful to the CDI information (step 106). ), then the volume is gradually lowered and faded out in the last 3 seconds or so (step 107).

Next, it is determined whether there is a subsequent song in the CDI (step 108), and if there is a song, the process returns to step 102 and the subsequent processing is executed, and the intros of the songs are played one after another, and if there is no song, the process is continued. end.

As mentioned above, by changing the intro playback start position of each song to a position that has elapsed, for example, 10 seconds from the beginning of each episode, and playing for example 10 seconds after the start position,
Even with the same 10-second intro playback time as before, it is easy to understand the content of each song, and you can actually understand the content as if you were listening to it from the beginning.

Incidentally, in the above embodiment, the description was made regarding a CD.

A cassette with an intro scan function.

The present invention can be similarly applied to DAT and the like.

<Effects of the Invention> According to the present invention, the intro playback start position is changed to a position after a predetermined time has elapsed from the beginning of one song, and the portion after the start position is played for a predetermined time. You can easily understand the content of the song without taking a long time.

In particular, the present invention has a negative effect when grasping the content of a song that includes a song.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of a CD player that implements the present invention. FIG. 2 is a timing chart showing the intro playback portion according to the present invention. FIG. 3 is a timing chart showing the intro playback volume according to the present invention. Flowchart of processing of the present invention. FIG. 5 is a timing chart showing a conventional intro playback part. 1...CD (compact disc). 6. System controller. 7. Audio circuit. 9...Operation section. 9a...Intro scan key 9b...Intro skip time setting volume, FI/
F○...Fade in/fade out control signal. Patent Applicant Alpine Co., Ltd. Agent Patent Attorney Chiki Saito Figure 4 Figure 2 Figure 3 Figure 5

Claims (1)

[Claims] In an intro scanning method in which the beginning of the song is jumped to and the beginning part is played for a predetermined period of time, the starting position of the intro playback is changed to a position after a predetermined period of time has elapsed from the beginning of the song, An intro scan method characterized in that a portion after the start position is played for a predetermined time.