JP2005285229A - Audio device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio device, by which a music can be listened while hardly needing the waiting time when a music recording medium is played back. <P>SOLUTION: This device is arranged so that; when the playback at the time after ejecting the music recording medium 2 is detected from a music recording medium control means 3 by a main control means 6, music data stored in a rewritable storage means 4 are played back by transferring them to a temporary storage means 5 during the music data are read out by the music recording medium control means 3 from the music recording medium 2; and when the playback operation without ejecting the music recording medium 2 is detected from the music recording medium control means 3 by the main control means 6, the music data stored in the temporary storage means 5 are played back during the music data are read out by the music recording medium control means 3 from the music recording medium 2, then the music can be listened while hardly needing the waiting time when the music recording medium 2 is played back. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an audio apparatus capable of listening to music with almost no waiting time when a music recording medium is reproduced.

  2. Description of the Related Art Conventionally, an audio device for listening to music at home or listening to music in a car cabin can reproduce a music recording medium in which music data is recorded in advance on a music CD, CD-ROM, DVD-ROM or the like. The ones that have been made are the mainstream.

  When a music recording medium is reproduced by such an audio apparatus, the apparatus main body reads out the music data at a reproduction speed, for example, twice that of the music recording medium, stores the music data in the buffer, and stores the music data stored in the buffer in the normal music data. Playing back at a playback speed, so that music can be heard without interruption even when music data cannot be read from the music recording medium due to vibration during driving, etc. It has become.

  However, in the conventional audio device, when playback is temporarily stopped to stop listening to music, or after the power of the device main body is turned off, the playback button is pressed to listen to music next time, or the device is turned on. Since the main body of the apparatus starts the rotation of the music recording medium and moves the optical pickup for reading out the music data to the start position of the music recording medium, it takes time to read out the music data from the music recording medium and play it back. was there.

In order to remedy such a problem, when playing back a recording medium after stopping playback of the music recording medium, the music data stored in the buffer is not deleted until just before stopping playback of the music recording medium for a specified time. Music recording medium with little waiting time until playback by holding it and starting playback from the music data stored in the buffer when it returns to the playback state before the specified time elapses from the stop state There is known an audio apparatus that can reproduce the above (for example, Patent Document 1).
JP-A-5-314655

  However, as in the audio device described in the above-mentioned Patent Document 1, in the case where the music data until just before starting the reproduction of the music recording medium is held in the buffer for a specified time, the music recording medium until the music recording medium is reproduced again. If the time exceeds the specified time, the music data stored in the buffer will be erased. Therefore, the time until the music recording medium is replayed is restricted, and the function is not performed after the music recording medium is played once. There are problems such as not being effective.

  Also, when playing back a music recording medium after turning off the power to the main unit, rotate the music recording medium and move the optical pickup to the start position when the rotation of the music recording medium is stable. In order to start playback of the music recording medium, there is a problem that the waiting time from when the power is turned on until playback of the music recording medium is started is not shortened.

  In order to solve such a problem, there is a method in which the music recording medium is always rotated. However, in this method, the rotation sound of the music recording medium is constantly generated from the main body of the apparatus, which causes noise and wastes power. There are also problems such that power consumption cannot be achieved due to consumption, and that the mechanical part of the apparatus main body is consumed quickly, resulting in a short life.

  The present invention has been made in order to improve such a conventional problem, and an object of the present invention is to provide an audio apparatus capable of listening to music with almost no waiting time when a music recording medium is reproduced. Is.

  The audio apparatus of the present invention includes a music recording medium control means for controlling reproduction, stop and discharge of music data recorded on a music recording medium, and rewriting for storing music data reproduced by the music recording medium control means for a predetermined time from the beginning. A main storage means, a temporary storage means for storing music data for a predetermined time during music data reproduction, and a main control means for controlling the music recording medium control means based on an instruction input from the input means. Is detected after the music recording medium is discharged from the music recording medium control means, the music data stored in the rewritable storage means is read while the music recording medium control means reads the music data from the music recording medium. If the music recording medium control means detects that the main control means reproduces without discharging the music recording medium, the music recording medium control means Music recording medium control unit from the recording medium in which is to reproduce the music data stored in the temporary storage means while reading out music data.

  With the above configuration, when a music recording medium is set in the apparatus main body and music data is played back, the music data stored in the rewritable storage means is read and transferred to the temporary storage means while the music recording medium control means reads the music data. Therefore, it is possible to listen to the music with almost no waiting time, thereby improving the operation response when reproducing the music recording medium.

  In addition, since it is not necessary to always rotate the music recording medium to reduce the waiting time, the rotation sound of the music recording medium does not cause noise, and wasteful power is consumed. Since the mechanism portion does not wear out at an early stage, it is possible to save power and improve the service life.

  The audio apparatus of the present invention includes a music recording medium control means for controlling reproduction, stop and discharge of music data recorded on a music recording medium, and rewriting for storing music data reproduced by the music recording medium control means for a predetermined time from the beginning. A main storage means, a temporary storage means for storing music data for a predetermined time during music data reproduction, and a main control means for controlling the music recording medium control means based on an instruction input from the input means. When the music recording medium control means detects that the music recording medium has been stopped during the reproduction of the music recording medium, the music data is stored in the rewritable storage means and the temporary storage means, and when the reproduction is started after the pause, the music recording medium The music data stored in the rewritable storage means is transferred to the temporary storage means for reproduction until the music recording medium control means reads the music data. It is.

  With the above configuration, when the music recording medium being played is temporarily stopped and then played again, the music recording medium control means transfers the music data stored in the rewritable storage means while reading the music data to the temporary storage means. Since playback is started, music can be listened to with almost no waiting time, and music data stored in the rewritable storage means is played back, so the time until the music recording medium is played back is limited. Not receive.

  In addition, since it is not necessary to always rotate the music recording medium to reduce the waiting time, the rotation sound of the music recording medium does not cause noise, and wasteful power is consumed. Since the mechanism portion does not wear out at an early stage, it is possible to save power and improve the service life.

  The audio apparatus of the present invention includes a music recording medium control means for controlling reproduction, stop and discharge of music data recorded on a music recording medium, and rewriting for storing music data reproduced by the music recording medium control means for a predetermined time from the beginning. A main storage means, a temporary storage means for storing music data for a predetermined time during music data reproduction, and a main control means for controlling the music recording medium control means based on an instruction input from the input means. When the music recording medium control means detects that the music recording medium is reproduced after being discharged, the music data stored in the rewritable storage means is read while the music recording medium control means reads the music data from the music recording medium. If the music recording medium control means detects that the main control means plays back without discharging the music recording medium, the music is transferred to the temporary storage means and played. The music recording medium control means reproduces the music data stored in the temporary storage means while the music recording medium control means reads the music data from the recording medium, and that the main control means is paused during reproduction of the music recording medium. If detected, the music data is stored in the rewritable storage means and the temporary storage means, and the music stored in the rewritable storage means until the music recording medium control means reads the music data from the music recording medium after the suspension is canceled. The data is transferred to the temporary storage means and reproduced.

  With the above configuration, when a music recording medium is set in the apparatus main body and music data is reproduced, the music data stored in the rewritable storage means is read and reproduced while the music recording medium control means reads the music data. Therefore, it is possible to listen to the music with almost no waiting time, thereby improving the operation response when reproducing the music recording medium.

  In addition, since it is not necessary to always rotate the music recording medium to reduce the waiting time, the rotation sound of the music recording medium does not cause noise, and wasteful power is consumed. Since the mechanism portion does not wear out at an early stage, it is possible to save power and improve the service life.

  The audio device of the present invention records the music data such as the total performance time, song number, and total number of tracks of the music recording medium when the music data reproduced by the music recording medium control means is stored in the rewritable storage means for a predetermined time from the beginning. Information obtained from a medium is stored alone or in combination.

  Even in the case of an audio apparatus with the above configuration, the music recording medium is frequently exchanged, or a plurality of music recording media are previously stored in a magazine or the like, and music data is selected from these music recording media and reproduced. Listen to music with almost no waiting time.

  According to the audio apparatus of the present invention, it is possible to listen to music with almost no waiting time, so that the operation response when reproducing a music recording medium is improved.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing the overall configuration of the audio apparatus, and FIGS.

  The audio apparatus shown in FIG. 1 is an in-vehicle audio apparatus that is used by being mounted on a vehicle such as an automobile. The apparatus main body 1 has previously recorded music data on a music CD, CD-ROM, DVD-ROM, or the like. Music data is read (reproduced) from the music recording medium 2, music recording medium control means 3 for controlling stop and discharge, and music data (music files such as MP3) reproduced by the music recording medium control means 3 are held. A rewritable storage means 4 comprising a hard disk drive (HDD) or flash memory, a temporary storage means 5 comprising a DRAM functioning as a buffer for temporarily storing music data reproduced by the music recording medium control means 3, and a main comprising a microcomputer Stored in the rewritable storage means 4 and the temporary storage means 5 in accordance with commands from the control means 6 and the main control means 6. D / A conversion is performed on the music data output from the storage medium control means 7 for referring to the music data, the input means 8 such as an operation switch provided on the front surface of the apparatus main body 1, and the recording medium control means 7. An audio output means 9 comprising a D / A converter, an amplifier and a speaker, and a liquid crystal display for displaying information such as the status of the system output from the main control means 6 and the names of songs and artists recorded on the music recording medium 2 The display means 10 is constituted as a whole.

  The music recording medium control means 3 that reproduces music data from the music recording medium 2 includes a mechanism that rotates the music recording medium 2 at, for example, double speed, and an optical pickup that reads out music data from the music recording medium 2 (both not shown). The music recording medium 2 can be played back according to the flowchart shown in FIG.

  Next, the operation of the audio device will be described with reference to FIGS. 2 to 4. The power source of the device main body 1 is turned on, the music recording medium 2 to be listened to is set in the device main body 1, and the input means 8 shown in FIG. When reproduction is started in step S1 of the flowchart, the music recording medium control means 3 starts preparation for moving the optical pickup to the start position in step S2 by rotating the music recording medium 2 at, for example, twice the speed during reproduction. At the same time, the music recording medium control means detects that the music medium 2 has been once discharged.

  When the input means 8 instructs to play, for example, the track 1 of the music recording medium 2 in step S1, preparation is made so that the music recording is played from the track 1 of the medium 2.

  Thereafter, the process proceeds to step S3, where it is determined whether or not the music data of the track 1 designated in step S1 exists in the rewritable storage means 4 comprising an HDD or a flash memory. The music data stored in advance in the means 4 is transferred from the head to the temporary storage means 5 for a predetermined time and stored in the temporary storage means 5.

  FIG. 3 shows how the music data recorded on the music recording medium 2 and the music data stored in the rewritable storage means 4 are transferred to the temporary storage means 5. In this figure, the music data on the music recording medium 2 is shown. 1-10, the music data in the rewritable storage means 4 is displayed as 1'-8 ', and the temporary storage means 5 is displayed as having a storage capacity of 4 blocks.

  Thereafter, the process proceeds to step S5 of the flowchart shown in FIG. 2, and the main control means 6 instructs the storage medium control means 7 to output to the audio output means 9 from the beginning of the music data stored in the temporary storage means 5. The music data stored in the temporary storage means 5 is output as audio from the audio output means 9 and rewritten as shown in (b) and (c) in FIG. Transfer of music data from the possible storage means to the temporary storage means 5 is continued.

  As a result, the power of the apparatus main body 1 is turned on and the music recording medium 2 starts to be reproduced simply by inputting, for example, a track of the music recording medium 2 to be listened to from the input means 8. In the case of the medium 2, music can be listened to without waiting time.

  On the other hand, the main control means 6 shows in FIG. 2 that the rotation speed of the music recording medium 2 set in the music recording medium control means 3 is stabilized and the optical pickup is moved to the reproduction start position and the preparation for reproduction is completed. When it is determined in step S6 in the flowchart shown in FIG. 3, the process proceeds to step S7, and the music data read by the music recording medium control means 3 from the music recording medium 2 is transferred to the temporary storage means 5 by the storage medium control means 7 in FIG. Simultaneously with the storage as shown, the transfer of the music data from the rewritable storage means 4 to the temporary storage means 5 is stopped.

  Thereafter, the process proceeds to step S9, where music data is output from the beginning of the music data stored in the temporary storage means 5 to the audio output means 9, so that the music being listened to is recorded on the music recording medium 2 without interruption. Music data can be continuously played back.

  The music data is stored in the temporary storage means 5 as follows.

  When a track to be reproduced from the music recording medium 2 is instructed by the input means 8 and the music data is read from the head of the track, the music data read from the music recording medium 2 is stored in the temporary storage means 5 and at the same time from the head in step S10. For example, it is determined whether or not it is held for 5 seconds. If it is not saved, the process proceeds to step S14, and music data for 5 seconds, for example, is saved in the rewritable storage means 4 from the beginning of the track. The length of the music data to be stored is the time from when the main control means 6 instructs the activation of the music recording medium control means 3 to when the music data can be read from the music recording medium 2 after preparation is completed. If it is sufficient to store music data for a slightly longer time, and it takes 2 seconds for example to reproduce the music recording medium 2, the music data for a longer time, for example 5 seconds, is stored in the rewritable storage means 4. That's fine.

  Note that the music data stored in the rewritable storage means 4 may be music data read from the music recording medium 2 as it is, or music data converted into a compressed audio format such as MP3 or WMA. .

  The timing of storing the music data from the music recording medium 2 to the rewritable storage means 4 is not limited to the case where the music recording medium 2 is reproduced from the beginning of the song. For example, the storage capacity of the temporary storage means 5 is full. When the playback time from the temporary storage means 5 can be played back for a long time, for example 1 minute, the optical pickup can be moved to the beginning of the track that has not yet stored the music data, and the music data can be read from the moved track and rewritten. The music data may be stored in the storage means 5, in which case the music data is reproduced from the temporary storage means 5, and before the music data stored in the temporary storage means 5 is emptied, the music data is resumed from the track being reproduced. May be started.

  Furthermore, music data including TOC (Table of Contents) can be stored in the rewritable storage means 4 from a plurality of music recording media 2.

  In this case, first, the information (TOC) obtained from the music recording medium 2 such as the difference in the music recording medium 2, for example, the total performance time, the song number, the total number of tracks, etc. is identified alone or in combination.

  FIG. 4 schematically shows a state in which music data of a plurality of music recording media 2 is stored in the rewritable storage means 4, and identifies the music recording medium 2 set in the music recording medium control means 3 of the apparatus body 1. The music data is stored in the rewritable storage unit 4 based on the identification result. When storing, the storage area is selected, and the music data is transferred from the rewritable storage unit 4 to the temporary storage unit 5. In this case, by selecting the music data to be transferred, the music recording medium 2 that has been played once starts to be played immediately after the music recording medium 2 is set in the music recording medium control means 3 of the apparatus main body 1. So there is almost no waiting time for preparation.

  Thereafter, in step S11, it is determined whether or not a stop instruction has been input from the input means 8. If a stop instruction has not been input, the process returns to step S7 to repeat the flow, and if a stop instruction has been input, Proceeding to step S12, a stop process for the apparatus main body 1 is performed.

  If it is determined in step S3 of the flowchart shown in FIG. 2 that the music data of the music recording medium 8 to be reproduced is not stored in the rewritable storage means 4, the process proceeds to step S13, and the music is recorded from the music recording medium 2. Normal playback, in which data is directly read and played back.

  On the other hand, in the above operation, when playback is temporarily stopped while the music recording medium 2 is being played and then playback is started again, the following method is played to improve the operation response when returning to playback. be able to.

  That is, when music data is read from the music recording medium 2 and stored in the temporary storage means 5, the same music data is also stored in the rewritable storage means 4 at the same time.

  At this time, the amount of music data to be stored in the rewritable storage medium 4 may be a length until the music data can be read from the music recording medium 2.

  When the reproduction of the music recording medium 2 is temporarily stopped in this state and then reproduction is started again, the music recording medium control means 3 tries to start reading out the music data of the music recording medium 2, but at this time, the rewritable memory is already stored. The means 4 stores the music data stored in the temporary storage means 5 at the time of the previous reproduction, and in order to transfer the contents to the temporary storage means 5, after the reproduction of the music recording medium 2 is temporarily stopped, from the stop position. When reproduction is started again, music data transferred from the rewritable storage means 4 to the temporary storage means 5 is reproduced until reading from the music recording medium 2 is started. It becomes possible to listen to music without waiting for the time until data reading is started.

  In the above embodiment, the in-vehicle audio apparatus has been described. However, the present invention can be applied to an audio apparatus that listens to music at home.

  The music recording medium 2 to be reproduced may be music data compressed like an MP3 file or a WMA file in addition to a music CD, CD-ROM, or DVD-ROM.

  The audio device of the present invention can be listened to music with almost no waiting time when a music recording medium is reproduced, and is therefore optimal for home audio devices and in-vehicle audio devices.

1 is a block diagram showing an overall configuration of an audio apparatus according to an embodiment of the present invention. It is a flowchart which shows the effect | action of the audio apparatus which becomes embodiment of this invention. It is a schematic diagram which shows the effect | action of the audio apparatus which becomes embodiment of this invention. It is a schematic diagram which shows the effect | action of the audio apparatus which becomes embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Music recording medium 3 Music recording medium control apparatus 4 Rewritable storage means (flash memory)
5 Temporary storage means (buffer)
6 Main control means 7 Storage medium control means 8 Input means 9 Audio output means 10 Display means

Claims (4)

Music recording medium control means for controlling reproduction, stop and discharge of music data recorded on the music recording medium, rewritable storage means for storing music data reproduced by the music recording medium control means for a predetermined time from the beginning, music Temporary storage means for storing music data for a predetermined time during data reproduction, and main control means for controlling the music recording medium control means based on an instruction input from the input means, wherein the main control means Music data stored in the rewritable storage means while the music recording medium control means reads the music data from the music recording medium when the music recording medium control means detects that the reproduction is performed after the medium is discharged. Is transferred to the temporary storage means for playback, and the main control means plays back the music recording medium without discharging the music recording medium control means. If it detects the audio device, characterized in that for reproducing music data stored during the temporary storage means the music recording the music recording medium control unit from the medium reads music data. Music recording medium control means for controlling reproduction, stop and discharge of music data recorded on the music recording medium, rewritable storage means for storing music data reproduced by the music recording medium control means for a predetermined time from the beginning, music Temporary storage means for storing music data for a predetermined time during data reproduction, and main control means for controlling the music recording medium control means based on an instruction input from the input means, wherein the main control means When the music recording medium control means detects that the music recording medium has stopped during playback of the medium, the music recording medium stores music data in the rewritable storage means and the temporary storage means, and starts playback after the pause. Until the music recording medium control means reads out the music data, the music data stored in the rewritable storage means is transferred to the temporary storage means for reproduction. Audio and wherein the. Music recording medium control means for controlling reproduction, stop and discharge of music data recorded on the music recording medium, rewritable storage means for storing music data reproduced by the music recording medium control means for a predetermined time from the beginning, music Temporary storage means for storing music data for a predetermined time during data reproduction, and main control means for controlling the music recording medium control means based on an instruction input from the input means, wherein the main control means Music data stored in the rewritable storage means while the music recording medium control means reads the music data from the music recording medium when the music recording medium control means detects that the reproduction is performed after the medium is discharged. From the music recording medium control means, the data is transferred to the temporary storage means and played back, and the main control means plays back without discharging the music recording medium. When the music recording medium is released, the music recording medium control means reads the music data from the music recording medium while the music recording medium control means reads the music data, and the main control means reproduces the music recording medium while the music recording medium is being reproduced. When the music recording medium control means detects that the music recording medium is temporarily stopped, the music recording medium control means stores the music data in the rewritable storage means and the temporary storage means, and the music recording medium control means from the music recording medium after releasing the pause. An audio apparatus characterized in that the music data stored in the rewritable storage means is transferred to the temporary storage means and reproduced until the music data is read out. When the music data reproduced by the music recording medium control means is stored in the rewritable storage means for a predetermined time from the beginning, information obtained from the music recording medium such as the total performance time, the song number, and the total number of tracks of the music recording medium is stored. 4. The audio apparatus according to claim 1, wherein the audio apparatus is stored alone or in combination.

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