JP4349469B2 - Disc player - Google Patents

Description

  The present invention relates to a disk reproducing apparatus for reproducing a disk on which information such as sound is recorded, such as a so-called compact disk.

  2. Description of the Related Art Conventionally, there is a disk reproducing apparatus with an auto change function in which a plurality of recording media such as CDs (compact disks) are stored in a magazine, and a desired disk is taken out from the magazine and played. According to the disk playback device with an auto change function, it is possible to continuously playback from the first disk to the last disk or to play back a desired disk by the user selecting a desired disk.

  In addition, the sound data of the intro part of the stored disk is recorded in advance in the memory, and when the disk is replaced, the sound data recorded in the memory is recorded until the next disk starts to be played. When playback is completed and the disc is ready for playback, switching the acoustic data playback to disc playback allows the user to quickly recognize the next song to be played back and eliminate the silence when the disc is replaced. The invention which can be performed is also proposed (for example, refer patent document 1).

Japanese Patent Laid-Open No. 04-258866

  However, in the above-mentioned disc playback device with an auto change function, the music recorded on the disc to be played next is played by playing the intro part of the song to be played next during the silent time when the disc is replaced. For example, when playing music as BGM (Back Ground Music) at a home party or the like, an interlude may be inserted in accordance with the surrounding excitement. Can not. It is more user-friendly to insert an interlude with a good rhythm when the surroundings are exciting, or to insert a calm interlude with a calm atmosphere. Also, if it takes too long to play the disc, including replacing the disc, there is not enough acoustic data recorded in the memory in advance, so that the song will be interrupted in the middle, resulting in an unpleasant state for the user. End up. On the other hand, if recording is performed in a memory for a long time so that there is no shortage of acoustic data, a memory having a large capacity is required.

  The present invention has been proposed in view of such a conventional situation, and an object of the present invention is to propose a disk reproducing apparatus with an auto change function, which has a function capable of eliminating the silent time when replacing a disk. .

In order to achieve the above-described object, a disc playback apparatus according to the present invention includes a disc playback unit that continuously plays back a plurality of discs on which music data is recorded and outputs a music signal, and a storage unit that stores the plurality of discs. And a disk storage / set means for selecting one disk to be played by the disk playback means from one or a plurality of stored disks, and setting the selected disk to the disk playback means, and noise The noise level detecting means for detecting the level of ambient noise classified according to the dynamic range of the sound, and the noise level detecting means according to the order of the rhythm of the song, the speed of the tempo, or the order of the tone of the music It consists the detected ambient each sound source data ranking is made corresponding to the level and one-on-one noise, the sound of the respective Data, the basic pattern is music data give the impression that certain songs are continuous, multiple sound source data composed of a finished pattern the music is music data give the impression that ends is stored Sound source data storage means, sound source data reproduction means for reproducing sound source data stored in the sound source data storage means and outputting music signals, music signal output from the disk reproduction means and sound source data reproduction means Output means for outputting the music signal output from the outside to the outside, and the sound source data reproducing means is adapted to replace the disk set in the disk reproducing means with another disk when the disk accommodating / setting means is replaced with another disk. the noise level during a period from after the end of reproduction of the disk that is currently set up for playback preparation of other disks is completed One sound source data ranking is made corresponding to the noise level detected by the detecting means selected from a plurality of sound source data stored in the sound source data storage means, repeating the basic pattern of the sound source data selected And after the preparation for reproducing the disc after the exchange is completed, the reproduction of the basic pattern is finished and the end pattern is reproduced before the reproduction of the disc after the exchange is started.

  According to the present invention, since sound source data corresponding to the detected sound level is selected and the sound source data is reproduced at the time of disc replacement, interlude data corresponding to the liveliness of the surroundings can be reproduced, and the disc replacement Silence time can be eliminated.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. This embodiment can accommodate a plurality of optical disks on which music data such as compact disks are recorded, and the present invention is applied to a disk reproducing apparatus with a disk changer that selects and reproduces one of the optical disks. It is a thing.

  FIG. 1 shows the configuration of a disc playback apparatus 1 according to an embodiment of the present invention. The disc playback device 1 stores a plurality of optical discs, a disc change unit 2 that selects and plays back one optical disc among them, a tone generator memory 3 that stores a plurality of tone generator data, and a tone generator memory 3. A sound source reproduction unit 4 that reproduces the sound source data being reproduced, a mix circuit 5 that synthesizes a reproduction signal from the disk change unit 2 and a reproduction signal from the sound source reproduction unit 4, and amplifies the signal output from the mix circuit 5 An amplifier 6, a speaker 7 that emits a signal output from the amplifier 6, a control unit 8, a microphone 9, an input unit 10, and a display unit 11 are provided.

  The disc change unit 2 includes a disc playback unit 12 and a storage unit 13 that can store a plurality of discs. The disc reproducing unit 12 reproduces an optical disc such as a compact disc and outputs a music signal. The accommodating unit 13 accommodates one or a plurality of optical discs reproduced by the disc reproducing unit 12. In addition, the storage unit 13 takes out an arbitrary optical disk from among the plurality of stored optical disks, sets the optical disk in a state where it can be played back on the disk playback unit 12, and the optical disk set in the disk playback unit 12 It has a disk change function that removes the disk. Since the disk change unit 2 has the disk change function as described above, the user's burden of disk replacement is reduced, and the disk replacement is performed smoothly. The disc change unit 2 outputs the reproduced music signal to the mix circuit 5.

  The disc change unit 2 reads various information such as the start address and end address and TOC (Table Of Contents) information for each song from the optical disc in addition to the music data of each song, and sends it to the control unit 8. Output. The TOC information includes playback time data for each song, playback time data for the sum of all songs, data indicating a start address and an end address for each song, and the like.

  The sound source memory 3 stores a plurality of types of interlude data that is played back when the disk is replaced. Here, it is assumed that the plurality of interlude data recorded in the sound source memory 3 stores, for example, five types of samba, rock, disco, techno, and ballad.

  Each interlude data is ranked according to, for example, the order of the rhythm and tempo speed of the music or the order of the tone of the music. For example, in the case of the above five types of interlude data, the samba is ranked 5; the rock is rank 4, the disco is rank 3, the techno is rank 2, the ballad is rank 1, and so on.

  One piece of interlude data is composed of a combination of two patterns, a basic pattern and an end pattern. The basic pattern is music data that makes the user feel that the music is continuous even if it is repeatedly reproduced. On the other hand, the end pattern is music data that gives the user the impression that the song ends. For example, the samba interlude data, specifically, the basic pattern is samba rhythm and lively music, the end pattern is a whistling sound, and the data that ends when the sound stops playing is stored Has been. The interlude data is played back repeatedly until the disc replacement is completed, and when the disc replacement is completed, the end pattern is played back at the end of the basic pattern to eliminate the silence time when changing the disc. And connecting songs smoothly.

  The sound source reproduction unit 4 reads out and plays the interlude music data recorded in the sound source memory 3 and outputs it as a music signal. The interlude data to be reproduced by the music reproducing unit 4 is selected from the sound source memory 3 in accordance with an instruction from the control unit 8. The sound source reproduction unit 4 outputs the reproduced music signal to the mix circuit 5.

  The mix circuit 5 mixes the music signal output from the disk playback unit 12 of the disk change unit 2 and the music signal output from the sound source playback unit 4 and outputs the mixed signal to the amplifier 6. The data amplified by the amplifier 6 is emitted by the speaker 7, and the user can listen to music and the like.

  The control unit 8 is a CPU (Central Processing Unit) that comprehensively controls each functional unit of the disc playback apparatus 1. The control unit 8 controls the playback of the optical disc by the disc playback unit 12 and controls the operation of returning the disc from the disc playback unit 12 to the storage unit 13 when replacing the disc and setting a predetermined disc in the disc playback unit 12. To do. The control unit 8 controls the output from the disc playback unit 12 and the output from the sound source playback unit 4 based on the TOC information from the disc playback unit 12.

  The microphone 9 collects ambient sounds and converts them into audio signals. The audio signal collected by the microphone 9 is output to the control unit 8 as an ambient noise signal. The level of the noise signal output from the microphone 9 is detected by the control unit 8 and is compared with the ranks of a plurality of interlude data stored in the sound source memory 3 and controlled to output the matched interlude data. The

  The input unit 10 is an operation unit operated by the user, and is used to input various commands such as play, stop, music feed, and disc selection. A signal operated by the user is sent to the control unit 8. Is output.

  The display unit 11 is for displaying information such as the number of songs on the numbered disc, the playback time, the remaining time, and menus for operating various functions. .

  Next, using the flowcharts shown in FIG. 2 and FIG. 3, the operation of the disc reproducing apparatus 1 for continuously reproducing a plurality of optical discs will be described.

  In the disc playback apparatus 1, when playback of a certain optical disc is completed, the optical disc is removed from the disc playback unit 12, the next optical disc to be played back is set in the disc playback unit 12, and playback of the newly set optical disc is started. Perform the operation. Further, in the disc reproducing apparatus 1, the interludes shown in the following steps S1 to S10 are performed so that no silence occurs during the disc exchange from the end of the reproduction of the optical disc to the start of the reproduction of the next optical disc. Performs playback control of song data.

  In step S1, the control unit 8 determines whether or not the last song of the optical disc currently being played has ended. If it is determined that the reproduction of the last song has been completed, the process proceeds to step S2. If the reproduction of the final song has not been completed yet, the process waits in step S1. If it is determined in step S1 that the final song has been completed by the control unit 8, the disc change unit 2 has started disc exchange in order to play the next optical disc.

  Next, in step S2, the control unit 8 detects the level of the noise signal detected by the microphone 9, and classifies the level. For example, the control unit 9 classifies the dynamic range of the noise signal detected by the microphone 9 into five levels of level 1 to level 5 in advance, and determines which class the detected noise signal level belongs to. By doing so, classify. This class has a one-to-one correspondence with the rank attached to the interlude data. For example, level 1 of the noise signal corresponds to rank 1 of the interlude data, level 2 of the noise signal corresponds to rank 2 of the interlude data, level 3 of the noise signal corresponds to rank 3 of the interlude data, The noise signal level 4 corresponds to rank 4 of the interlude data, and the noise signal level 5 corresponds to rank 5 of the interlude data.

  Next, in step S3, the control unit 8 selects one piece of interlude data having a rank corresponding to the noise level detected in step S2, and proceeds to step S4. For example, if the surrounding area is lively and the surrounding noise signal is determined to be at the highest level 5 in step S2, the samba interlude data of rank 5 is selected in step S3.

  In step S4, the control unit 8 issues a reproduction start command for the basic pattern of the selected interlude data to the sound source reproduction unit 4, and proceeds to step S5. When this playback command is given, the sound source playback unit 4 reads the basic pattern of the selected interlude data from the sound source memory 3 and starts playback.

  In step S5, the control unit 8 determines whether or not the preparation for reproducing the optical disk to be reproduced next is completed. For example, an optical disk to be reproduced next is taken out from the storage unit 13 and set in the disk reproduction unit 12, and it is determined whether or not there is a notification that reading of T O C of the optical disk is completed. When it is determined that the reproduction preparation of the optical disk to be reproduced next is completed, the process proceeds to step S7 in FIG. 3, and when it is determined that the preparation is not completed, the process proceeds to step S6.

  In step S6, the control unit 8 determines whether or not the reproduction of the basic pattern of the selected interlude data has been completed. If it is determined that the reproduction has been completed, the process returns to step S4, and a command is issued to the sound source reproduction unit 4 to repeatedly reproduce the basic pattern of the selected interlude data. On the other hand, if the reproduction of the basic pattern of the selected interlude data has not been completed, the process returns to step S5 and the processes of steps S5 and S6 are repeated.

  As described above, the control unit 8 repeatedly reproduces the basic pattern until the preparation for reproducing the next optical disc is completed. For this reason, the interlude data is not too short and no silence is generated, and the interlude data can be reproduced for a time close to the time required for the optical disc replacement.

  Next, in step S7 of FIG. 3, the control unit 8 determines whether or not the reproduction of the basic pattern of the selected interlude data has been completed. If it is determined that the reproduction of the basic pattern has been completed, the process proceeds to step S8. If it is determined that the reproduction has not been completed, step S7 is repeated until the reproduction is completed.

  In step S8, the control unit 8 issues a reproduction start command for the end pattern of the selected interlude data to the sound source reproduction unit 4, and proceeds to step S9. When this playback command is given, the sound source playback unit 4 reads the end pattern of the selected interlude data from the sound source memory 3 and starts playback.

  In step S9, the control unit 8 determines whether or not the reproduction of the end pattern of the selected interlude data has been completed. If it is determined that the reproduction has been completed, the process proceeds to step S10. If it is determined that the reproduction has not been completed, the process returns to step S9 and is repeated until it is determined that the reproduction of the end pattern has been completed.

  In step S <b> 10, the control unit 8 issues to the disc change unit 2 a command to start playback of the optical disc to be played next after the playback preparation is completed. When this command is issued, the disc playback unit 12 of the disc change unit 2 starts playback of the optical disc. When step S10 ends, the process returns to step S1 in FIG. 2 again, and the processing from step S1 to step S10 is repeated.

  As described above, when the control unit 8 of the disc playback apparatus 1 determines that the playback of the optical disc has ended, the optimal interlude is determined from the noise level detected by the microphone 9 until the next optical disc is replaced. By selecting song data and reproducing the interlude music data, it is possible to eliminate the silent time when the disc is replaced and to make the connection between the songs natural.

  As described above, in the continuous reproduction of a plurality of optical discs, the operation from the reproduction of interlude data at the time of disc exchange to the reproduction of the optical disc after the exchange has been described. Even when the order of the songs to be played is specified, the interlude can be played in the same manner as described above even when the optical disk needs to be replaced due to the specified order of the songs.

  Further, the interlude data stored in the sound source memory 3 is data recorded in advance, but is not limited thereto. For example, the interlude data may be updated to the latest by connecting the disc player 1 to the Internet and downloading the interlude data. Further, the sound source memory 3 may be made detachable from a recording medium such as a removable memory card.

  In addition, as described above, the end pattern is described to be played only once. However, the present invention is not limited to this. For example, an end pattern that makes the user feel that the song is continuous even when played repeatedly is as follows: You may make it reproduce | regenerate several times.

1 is a block diagram of a disc playback apparatus 1 to which the present invention is applied. 4 is a flowchart for explaining the operation of the disk playback device 1 when a disk is replaced. 10 is another flowchart for explaining the operation of the disk playback device 1 when a disk is replaced.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc playback device, 2 Disc change part, 3 Sound source memory, 4 Sound source playback part, 6 Amplifier, 7 Speaker, 8 Control part, 9 Microphone, 10 Input part, 11 Display part, 12 Disc playback part, 13 Storage part

Claims (1)

Disc reproducing means for continuously reproducing a plurality of discs on which music data is recorded and outputting music signals;
While having a storage part for storing a plurality of disks, one disk to be played back by the disk playback means is selected from the stored one or more disks, and the selected disk is set in the disk playback means. Disk storage / setting means;
Noise level detection means for detecting the level of ambient noise classified according to the dynamic range of noise;
Song rhythm speed of the order of tempo, or depending on the brightness of the order of melody, each sound source ranking is made for one-to-one correspondence with the level of noise ambient detected by the noise level detection means Each sound source data is composed of a basic pattern that is music data that gives the impression that a predetermined song is continuous and an end pattern that is music data that gives the impression that the song ends. a sound source data storage means in which a plurality of sound source data is stored that,
Sound source data reproducing means for reproducing the sound source data stored in the sound source data storage means and outputting a music signal;
An output means for outputting the music signal output from the disk playback means and the music signal output from the sound source data playback means to the outside,
The sound source data reproducing means, when the disk accommodation / setting means replaces the disk set in the disk reproducing means with another disk, after the reproduction of the currently set disk is completed, From the plurality of sound source data stored in the sound source data storage means, one sound source data ranked corresponding to the noise level detected by the noise level detection means until the reproduction preparation is completed. After selecting and playing the basic pattern of the selected sound source data repeatedly, and after the replacement disc is ready for playback, the playback of the basic pattern is terminated before the playback of the disc after replacement is started and A disc playback device that plays back an end pattern.

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