JPH07176130A - Digital audio player - Google Patents

Abstract

PURPOSE:To remarkably increase the search speed for selecting a music by holding musical data at the start of an objective music simultaneously with the reproduction of an unheld music. CONSTITUTION:The search of the objective music is instructed by a button, etc., against the main body 1 of an MD player, and the take-out of the musical data is set in a memory 3. Next, the reading out address is specified against the memory 3 to start the read-out of the musical data. At this time, the search of the unheld music is instructed to the main body 1, and the take-out of the musical data is set to the side of main body 1. The musical data at the start of the objective music are written into the memory 3 while the objective music instructed to search is being reproduced. When the write-in is finished, a flag indicating that the objective music instructed to search is changed to the held music from the unheld music, is raised on a memory 2a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital audio player, and more particularly to a digital audio player such as a CD player or an MD player equipped with a search instruction means such as a music selection button. -About Ya.

[0002]

2. Description of the Related Art In the case of a conventional digital audio player, the target music is played immediately when a music selection button is pressed to indicate the search of the target music. Not necessarily. The reading optical pickup is moved to a position on the disc where the target music piece is recorded so that the disc cannot be played until the music data is read out. As can be seen from this, conventional digital audio
In the case of a dioprayer, the time required from when the music selection button is pressed until the performance of the disc is started is determined by the time required for the optical pickup to move to the predetermined position. In other words, conventional digital audio
The search music selection speed in the diop- lyer strongly depends on the mechanical movement speed of the pickup.

As described above, the search speed of the search in the conventional digital audio player strongly depends on the moving speed of the optical pickup. Therefore, in order to increase the search music selection speed, it is necessary to increase the moving speed of the optical pickup. However, if the moving speed of the optical pickup is too fast, it becomes difficult to count the number of tracks, and it becomes impossible to secure an accurate moving amount. Therefore, the moving speed of the optical pickup cannot be increased so much. In other words, conventional digital audio
There is a limit to the search speed of the dioploer that is determined by the moving speed of the optical pickup.

The present invention has been made in view of the above-mentioned problems, and is a service that is superior to conventional digital audio players.
It is an object of the present invention to provide a digital audio player capable of significantly increasing the music selection speed.

[0005]

To achieve the above object, a digital audio player (1) according to the present invention is provided.
In a digital audio player equipped with a search instruction means such as a music selection button and a microcomputer, a holding means for holding music data of each music head recorded on a medium, The music data of each of the above-mentioned music pieces is stored in the holding means.
Holding or not presenting means for indicating whether or not the data is held, taking out means for taking out the music data from the holding means, and taking out the music data from the medium or the holding means. And a holding means, a holding presence / absence presenting means, a take-out means, and a switching means are controlled, and the music data of the unheld music head is reproduced when the unheld music is reproduced. And a control means for controlling the holding of the holding means.

The digital audio player (2) according to the present invention is recorded on a medium in a digital audio player provided with a search instruction button and other search indicating means and a microcomputer. Holding means for holding the music data of each beginning of the music, taking out means for taking out the music data from the holding means, and taking out the music data from the medium or from the holding means. Switching means for switching whether or not to perform, and controlling the holding means, the take-out means and the switching means,
When the medium is initialized, it is characterized by further comprising control means for performing control to collectively hold the music data of each music piece stored in the medium in the holding means.

The digital audio player (3) according to the present invention is recorded on a medium in a digital audio player equipped with a search instruction button and other search instructing means, a microcomputer and the like. Holding means for holding the music data of each music beginning, holding presence indicating means for indicating whether or not the music data of each music beginning is held in the holding means, and music data from the holding means. A take-out means for taking out the data, a switching means for taking out the music data from the medium or the holding means, the holding means, the holding presence / absence presenting means,
Control means is provided for controlling the ejecting means and the switching means, and for holding the music data of each music piece in the holding means in the idle time of the medium. .

[0008]

According to the digital audio player (1) having the above construction, when the target music piece A instructed to search is not held by the holding means, the unheld music piece is held. The music data of the beginning of the target tune A is held in the holding means at the same time as the playback of. When the music data at the beginning of the music piece is held in the holding means and the target music piece A is changed from the non-holding music piece to the held music piece, the holding data indicating means holds the music data at the beginning of the target music piece A by the holding means. Is held by the control means.

When the held music is reproduced, the above-mentioned server is used.
Almost at the same time when the search is instructed by the search instructing means, the extracting means retrieves the music data of the held music from the retaining means and reproduces it. On the other hand, while the reproduction is being carried out, the optical pickup is moved to a predetermined position on the disk which is the medium, that is, a position where the data next to the music data of the above-mentioned held music piece is recorded. Is completed. Then, at the same time when the reproduction of the music data held in the holding means is completed, the destination of the music data is switched from the holding means to the medium by the switching means.

As described above, the digital audio play
According to (1), when the held music is reproduced, it is as if the optical pickup moves to the beginning of the music instructed at the same time when the search is instructed. Since the music can be reproduced, the search speed of the search can be reduced as compared with the case where the search speed of the search is limited by the mechanical movement of the optical pickup as in the conventional digital audio player. It is possible to speed up significantly.

The above digital audio player (2)
In this case, the holding of the music data of the music heads recorded on the medium in the holding means is carried out all at once when the medium is initialized. Therefore, although it takes time for the holding at the time of the initialization, once the music is held, all the music recorded on the medium becomes the held music. When it becomes a held song, digital audio play
As described in item (1), the search music selection speed is significantly increased.

The above digital audio player (3)
In the case of, the free time of the medium disk, for example, 2
When the optical pickup is stopped during playback at double speed, triple speed, etc., or when the disc is in a non-playing state such as a pose state, a stop state, etc. -Is held by the holding means. Then, when the music data of the beginning of the music B is held in the holding means by utilizing the free time, the holding presence / absence presenting means indicates to the control means that the music B is a held music. . After that, the music B is processed as a held music by the control means. When it becomes a held song, the digital
As described in the section of Dioplayer (1), the search music selection speed is remarkably increased.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a digital audio player according to the present invention will be described below with reference to the drawings. Figure 1 (a)
Is a digital audio player M according to the first embodiment.
FIG. 1 is a block diagram schematically showing the main part of the D player, and FIG. 1 (b) is a flow chart showing the operation of the microcomputer 2.

In FIG. 1A, reference numeral 1 is an MD player main body, 2 is a micro computer in which a memory 2a is installed, and a micro computer 2 has a music selection button (not shown). A search instruction signal is input. The MD player body 1 is connected to the microcomputer 2 and to the terminal 4 a of the changeover switch 4 and the memory 3. The microcomputer 2 is connected to the memory 3, and the memory 3 is connected to the terminal 4b of the changeover switch 4 and the changeover switch 4
4c is connected to the D / A converter 5, and the D / A converter 5 outputs an audio signal.

When playing a disc in the MD player constructed as described above, a search is performed in accordance with the flow chart shown in FIG. 1 (b). First, in step 1, it is judged whether or not the target music to be reproduced is a held music whose music data at the beginning of the music is already held in the memory 3 or an unheld music which is not held. It Specifically, as described in step 8 to be described later, it is determined whether the song is an unheld song or a held song depending on whether or not a flag is set in the memory 2a.
If the target song is a held song, steps 2 to 4 are processed, and if it is not held, steps 5 to 8 are processed.

First, the processing of steps 2 to 4 will be described. In step 2, the following processes 1) to 4) are collectively performed. 1) When a signal for instructing the search of the target music is received by a music selection button (not shown) or the like, the search of the target music is instructed to the MD player body 1. 2) The destination for extracting music data is set in the memory 3. Specifically, the changeover switch 4 is changed over to the terminal 4b side. 3)
A read address is designated for the memory 3. 4)
Reading of music data from the memory 3 is started. The read music data is transferred to D via the changeover switch 4.
It is transmitted to the / A converter 5 and converted into an audio signal by the D / A converter 5.

In step 3, it is judged whether or not the search for the target music piece is completed. That is, the optical data is recorded at a position on the disk where the target music is recorded, and a position where the music data next to the music data of the head of the target music stored in the memory 3 is recorded. It is determined whether a pickup (not shown) has moved. When the movement is completed and the reading of the music data of the beginning of the target music stored in the memory 3 is completed, the process proceeds to step 4.

In step 4, the changeover switch 4 is changed over to the terminal 4a side, and the music data is taken out from the MD.
It is set in the player body 1. The music data read from the MD player body 1 is transmitted to the D / A converter 5 via the changeover switch 4, and is converted into an audio signal by the D / A converter 5.

Next, the processing of steps 5 to 8 will be described. In step 5, the following processes 5) to 7) are collectively performed. 5) The MD player body 1 is instructed to search the target music which is not held. 6) The destination of the music data is set to the MD player body 1 side. Specifically, the changeover switch 4 is changed over to the terminal 4a side. 7)
A write address for writing the music data of the beginning of the target music piece is specified in the memory 3.

At step 6, it is judged whether or not the search operation is completed. That is, it is determined whether or not the movement of the optical pickup has been completed at a predetermined position on the disc on which the target song for which the search is instructed is recorded. When the movement is completed, the process proceeds to step 7 and the target song designated by the search is reproduced while the music data at the beginning of the target song is reproduced.
Data is written in the memory 3. Next, at step 8, it is judged whether or not the writing of the music data of the beginning of the desired music piece to the memory 3 is completed, and when the writing to the memory 3 is completed, the search instruction is given to the memory 2a. After setting the flag indicating that the target song has changed from the unheld song to the retained song, the process returns to the main routine.

As described above, in the case of the digital audio player according to the first embodiment, if the target song instructed to search is an unretained song, the unreserved song is reproduced and the beginning music thereof is reproduced. If the data is held in the memory 3 and the target song instructed to search is a held song, the music data of the held song head stored in the memory 3 at the same time when it is instructed to search is held. When the music data is reproduced and the reproduction of the music data is completed, the destination of the music data is switched to the MD player main body 1 and the target music piece is continuously reproduced. Therefore, when the target music is repeatedly played, the search speed of the search can be remarkably increased after the second time, as compared with the conventional digital audio player which relies on the mechanical search. Therefore, the time required to start the performance of the target music can be significantly shortened.

Next, a digital audio player according to the second embodiment will be described with reference to FIG. FIG. 2A is a block diagram schematically showing a digital audio player according to the second embodiment, except that the micro computer 2 is a micro computer 12. The structure is the same as that of the digital audio player according to the first embodiment shown in FIG. The functions of the other components except the microcomputer 12 are also the same.

FIG. 2 (b) is a flow chart showing the operation of the microcomputer 12, in which the music data at the beginning of each song recorded on the disc is initialized when the disc is initialized. 3 is a flow chart showing the operation in the case of storing in No. 3.

First, in step 11, the target song number is 1
Is set to. Next, in step 12, MD play
The search of the target music piece is instructed to the main body 1, and the write address for writing the music data of the head music piece of the target music piece is specified in the memory 3. In step 13, it is judged whether or not the search of the target music piece has been completed. If the search of the target music piece has been completed, the process proceeds to step 14 and the music of the music piece of the target music piece is stored at the address designated in step 12. The data is written. When it is determined in step 15 that the writing has been completed, step 1
Moving to step 6, it is judged whether the written target song is the final song recorded on the disc. If the target song is not the final song, the target song number is incremented by 1 in step 17, and then the process returns to step 12. If the target song is the final song, the process returns to the main routine. In addition,
After all the music pieces recorded on the disc have been held after the above processing, the operation of the digital audio player according to the first embodiment shown in FIG. According to the processing of steps 2 to 4 of the flowchart, the search music selection processing is performed.

As described above, in the digital audio player according to the second embodiment, when the disc is initialized, the music data of each music piece recorded on the disc are collectively recorded. Since it is held in the memory 3, it takes a little time to hold it.
That is, the time required to start the performance of the music instructed by the search can be remarkably shortened as compared with the conventional digital audio player which relies on the mechanical search.

Next, a digital audio player according to the third embodiment will be described with reference to FIG. FIG. 3A is a block diagram schematically showing a digital audio player according to the third embodiment, and its configuration is such that the microcomputer 2 has a memory 22a.
The configuration is the same as that of the digital audio player according to the first embodiment shown in FIG. 1A except that the number is 2. The functions of the other components except the microcomputer are the same.

FIG. 3 (b) is a flow chart showing the operation of the microcomputer 22. It is judged whether or not the MD player main body 1 has an empty time. 9 is a flowchart showing an operation when an unheld music piece is changed to a held music piece by using time.

First, in step 21, MD player main body 1
It is determined whether there is free time. That is, it is determined whether the optical pickup is temporarily stopped at double speed or triple speed, or whether the MD player body 1 is in a non-playing state such as a pose state or a stop state. To be done. If the empty time is present, the process proceeds to step 22 and it is judged whether or not there is an unheld song whose music data at the beginning of the song is not held in the memory 3, and if there is no empty time, the process returns to the main routine. . If there is the unheld song in step 22, the process proceeds to step 23, and if there is no unheld song, the process returns to the main routine.

In step 23, the following processes 8) to 10) are collectively performed. 8) The song number of the unheld song is set as the target song number. 9) The MD player main body 1 is instructed to search the target song. Specifically, the changeover switch 4 is the terminal 4
It is switched to the a side. 10) Support memory 3
A write address for writing the head music data of the target music for which the instruction is given is designated.

Next, in step 24, it is judged whether or not the search of the target music piece has been completed. If the search is completed, in step 25 the music data of the target music piece is searched.
Data is written in the memory 3. Then, in step 26, when the writing is completed, a flag is set in the memory 22a to indicate that the target music piece has been stored. Then return to the main routine.

When the stored music is obtained after the above processing, the digital audio according to the first embodiment shown in FIG.
A search music selection process is performed in accordance with the steps 2 to 4 of the flow chart showing the operation of the diop player.

As described above, in the digital audio player according to the third embodiment, the music data of the unmaintained music head is held by utilizing the idle time of the MD player main body 1. It In the case of the digital audio player according to the first embodiment, in order to hold the head music data of all the songs recorded on the disc in the memory 3, it is necessary to reproduce all of the above songs. However, in the case of the digital audio player according to the second embodiment, it is necessary to hold the head music data of all the above-mentioned songs at the time of initializing the disc, but the third embodiment is different. These problems can be partially solved by using the digital audio player according to the present invention.

[0033]

As described above in detail, according to the digital audio player (1) of the present invention, when the music recorded on the medium is reproduced once and then reproduced for the second time,
Compared with the conventional digital audio player, the search time of the search can be remarkably shortened. Further, according to the digital audio player (2) of the present invention, it takes a little time to initialize the medium, but after that, the search time of the search is remarkably longer than that of the conventional digital audio player. It can be shortened. Further, according to the digital audio player (3) of the present invention, since the music data of the unretained music head is held in the free time of the medium,
The problems of the digital audio player (1) and the digital audio player (2) can be partially solved.

[Brief description of drawings]

1A is a block diagram schematically showing a digital audio player according to a first embodiment of the present invention, and FIG. 1B is a flow chart showing the operation of a microcomputer. It is a chart.

FIG. 2A is a block diagram schematically showing a digital audio player according to a second embodiment of the present invention, and FIG. 2B is a flowchart showing the operation of a microcomputer. -It is.

FIG. 3A is a block diagram schematically showing a digital audio player according to a third embodiment of the present invention, and FIG. 3B is a flow chart showing the operation of the microcomputer. -It is.

[Explanation of symbols]

 1 MD player main body 2, 12, 22 Micro computer 2a, 3, 22a Memory 4 Changeover switch

Claims (3)

[Claims] 1. A digital audio player equipped with a search instruction means such as a music selection button and a microcomputer, and a holding means for holding music data of each head recorded on a medium. A holding presence / absence presenting means for indicating whether or not the music data of each music piece is held in the holding means, a take-out means for taking out music data from the holding means, and a take-out of music data. The holding means, the holding presence / absence presenting means, the ejecting means, and the switching means are controlled, and an unheld music piece is reproduced while switching between the medium and the holding means. A digital audio player, characterized in that it further comprises control means for controlling to hold the music data of the music piece not yet held in the holding means. 2. A digital audio player equipped with a search instruction means such as a music selection button and a microcomputer, and a holding means for holding the music data of each head recorded on a medium. Removing means for taking out music data from the holding means, switching means for switching between taking out the music data from the medium or the holding means, the holding means and the taking out Control means for controlling the switching means and the switching means, and for collectively holding the music data of each music head stored in the medium in the holding means at the time of initialization of the medium. A digital audio player characterized in that 3. A digital audio player provided with a search instruction means such as a music selection button and a microcomputer, and a holding means for holding music data of each music head recorded on a medium. A holding presence / absence presenting means for indicating whether or not the music data of each music piece is held in the holding means, a take-out means for taking out music data from the holding means, and a take-out of music data. The switching means for switching from the medium to the holding means and the holding means, the holding presence / absence presenting means, the ejecting means, and the switching means are controlled, and the free time of the medium is set. A digital audio player comprising: a control means for controlling the holding of the music data of each of the music heads in the holding means.