JPH0652590B2 - Intro scan method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention reproduces a song for a predetermined time after cueing a song, and then cueing the song one by one and reproducing operation for a predetermined time. The present invention relates to an introscan method for repeating steps.

<Prior Art> A DAT device (digital audio tape device), a tape player, etc., performs the beginning of a song and then reproduces the song for a predetermined time. There is a device having an introscan function for searching the desired music by repeating the reproducing operation of.

For example, in the DAT device, when the introscan key is pressed, the introscan mode is set, and in this introscan mode, the start ID recorded at the beginning of the music is detected to perform cueing, and a predetermined time (eg 8 For a second), the intro portion is reproduced, and thereafter, the beginning of the music and the reproduction for a predetermined time are repeated one after another, and the play key is pressed to enter the play mode and the intro scan is completed.

<Problems to be Solved by the Invention> In the conventional introscan method, the reproduction time of the intro section is set to be relatively long, that is, 8 to 10 seconds. Therefore, before the time elapses, for example, after the reproduction is started. Two
Even if it turned out that it was not a favorite song within 3 seconds, he had to listen to the song for a set time. Therefore, there is a problem that a desired song cannot be searched quickly, and a song that the user does not want to listen to must be listened to for the remaining seconds.

In view of the above, an object of the present invention is to provide an introscan method capable of shortening the reproduction time of the intro section as necessary in the introscan mode to find the beginning of the next music piece.

<Means for Solving Problems> FIG. 1 is a block diagram of a DAT device for implementing the introscan method according to the present invention.

11 is a magnetic head, 12 is a signal processing unit, 13 is a control microcomputer, 14 is an operation panel, 14a is an intro scan key, 14b is a play key, 15 is a tape running control unit, 16 is a tape running mechanical unit, 17 is a timer, 19
Is an acoustic circuit.

<Operation> The intro scan key 14a is operated to start the intro scan, and when the intro scan key is operated during the reproduction of the intro section, the reproduction is discontinued and the next song is cued, and the play key 14b is pressed. Ends the intro scan.

<Embodiment> FIG. 1 is a block diagram of a DAT device for implementing an introscan method according to the present invention, and FIG. 2 is a flow chart of an introscan process according to the present invention.

In FIG. 1, 11 is a magnetic head for both recording and reproduction (actually two recording / reproducing heads are provided), 12
Is a signal processing unit, 13 is a control microcomputer, 14 is an operation panel equipped with an intro scan key 14a and a play key 14b, 15 is a tape running control unit, 16 is a tape running mechanical unit, 17 is a timer, 19 is an acoustic circuit, 20 is a speaker.

The signal processing unit 12 stores the audio data read from the magnetic tape by the magnetic head 11 in a built-in RAM, outputs the audio data to the acoustic circuit 19 after performing error detection correction and other processing on the audio data, Further, digital audio data is output to the magnetic head 11 and written on the tape.
The signal processing unit 12 reads the absolute time, start ID, etc. written in the subcode area of each track and outputs them to the control microcomputer 13.

The control microcomputer 13 is a processor (CPU) 13
a, a program memory (ROM) 13b for storing various processing programs, and a RAM 13c are provided to perform the introscan processing shown in FIG.

The overall operation of FIG. 1 will be described below with reference to the flowchart of FIG.

When the introscan key 14a is pressed, the control microcomputer 13 enters the introscan mode and controls the tape running control unit 15 to fast forward the magnetic tape in the forward direction and to search for the beginning of the next song. Further, the control microcomputer 13 inputs the signal MTC to the acoustic circuit 19 to put it in the mute state.

After that, if the tape is fast-forwarded and the start ID detection signal SF is output from the signal processing unit 12, the control microcomputer 13 performs well-known positioning control to position the magnetic head at the beginning of the music (see steps 101 to 103 above). ).

When the search is completed, the control microcomputer 13 sends the tape at the play speed and cancels the mute. As a result, the acoustic circuit 19 inputs an analog audio signal corresponding to the digital audio data input from the signal processing unit 12 into the speaker 20 and outputs music (step 104).

Further, the control microcomputer 13 causes the timer 17 to measure the elapsed time t after the start of the play (step 105), and also checks whether the play key 14b is pressed (step 106). If the play key 14b is pressed, the play mode is set. After that, normal reproduction control is continued (step 10).
7).

However, if the play key 14b is not pressed in step 106, it is checked that the elapsed time t has exceeded the preset reproduction time T _s in the intro scan (step 108).

If t <T _s , intro scan key 1 during play
It is checked that 4a is pressed (step 109), and if it is not pressed, the processing from step 104 is repeated, and the reproduction of the intro part is continued. Incidentally, when the intro scan key 14a is pressed during the play, the reproduction of the intro portion is immediately stopped and the next music piece is searched as will be described later.

If t ≧ T _s in step 108, in other words, if the play of the intro portion of the song is completed during the preset time T _s , the control microcomputer 13 stops the play (step 110). The search for the next music piece is started by the processing after 102.

On the other hand, before the time t ≧ T _s , the intro scan key 14a
If is pressed, "YES" is determined in step 109, the control microcomputer 13 immediately stops the play (step 110), and thereafter, the process of step 102 and subsequent steps starts the search for the next song.

In the above description, when the intro scan key 14a is pressed during the play of the intro section, the play is immediately stopped and the intro scan of the next song is started, but the present invention is not limited to the intro scan key. It may be a key.

<Effects of the Invention> As described above, according to the present invention, when the introscan key is operated during playback of a song by introscan, the playback is stopped and the next song is searched for. In, the playback time of the intro section can be shortened as necessary, and therefore the search time of a desired song can be shortened, and it is possible to prevent listening to unfavorable music for a long time.

[Brief description of drawings]

FIG. 1 is a block diagram of a DAT device that realizes the introscan method according to the present invention, and FIG. 2 is a flow chart of processing of the present invention. 11 ... Magnetic head, 12 ... Signal processing unit, 13 ... Control microcomputer, 14 ... Operation panel, 14a ... Introscan key, 14b ... Play key, 15 ... Tape running control unit, 17 ... Timer

Claims (1)

[Claims] 1. An introscan method in which after the beginning of a song is reproduced, the song is reproduced for a predetermined time, and thereafter, the beginning of the song and the reproducing operation for a predetermined time are repeated one after another until a predetermined state is reached. , The introscan operation is started by operating the introscan key, and when the introscan key is operated during playback of a song by introscan, playback is stopped and the introscan of the next song is started. An introscan method characterized by setting to a normal play mode.