JP2013020197A - Music playback device and music playback method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a music playback device which is capable of controlling playback by operation of a card medium where music data is stored.SOLUTION: Playback control means 10 of a music playback device 1 switches from an unmounted state to a mounted state (S2) when detecting that a card medium 2 has been loaded to a card slot 1j in the unmounted state (S1), temporarily stops playback of music data (S6) and starts measurement of the lapse time (S7) without switching to the unmounted state when detecting that the card medium 2 has been ejected from the card slot 1j during playback of music data stored in the card medium 2 in the mounted state, and executes playback control (for example, S8 and S9 to S10) corresponding to the measured lapse time when detecting that the card medium 2 has been loaded to the card slot 1j.

Description

  The present invention relates to a technique for playing back digital music data, and more specifically, is an invention in which playback control can be performed by operating a medium in which digital music data is stored.

  Portable music playback devices that store digital music data in semiconductor memory and are carried by users are popular among young people, and are popular among young people who are popular with portable music playback devices. There is a demand for a portable music player to have the functions of a certain DJ device.

  FIG. 5 is a diagram for explaining a DJ device that handles a record board in which analog music data due to fine irregularities on the surface is stored. The DJ equipment 3 that handles a record board includes a turntable unit 30 that is connected to a drive motor and rotates the record board, a tone arm unit 31 that supports a cartridge including a record needle, a slider 32 for changing the pitch, By operating a record board, which is a medium in which music is stored, it is possible to perform playback control such as scratching the same part repeatedly and pausing playback of music.

  An invention that can control playback even with a device that handles digital music data has already been devised. For example, Patent Document 1 discloses a DJ device that can handle a compact disc, and Patent Document 2 discloses a game center. A game DJ device to be set is disclosed. In addition, products in which the DJ device described with reference to FIG. 5 is made compatible with digital music data are already on the market.

JP 2002-341955 A Japanese Patent No. 3330573

  However, the above-described invention is an invention for controlling the reproduction of digital music data by operation using a human interface such as a digital turntable and various buttons. Digital music data is stored like a record board. It was not an invention for performing playback control by operating the media to be played.

  Actually, in a portable music player, in addition to a mode in which a memory for storing digital music data is mounted inside and an external storage medium is not used, an SD card or the like mounted with a memory for storing digital music data is used. As a mechanism for loading / unloading the card media, there is a mode in which a push-push type card slot is provided and the card media is used as an external storage medium. It is also conceivable to perform playback control by operating stored card media.

  Therefore, the present invention provides a playback control such as a scratch or a pause by operating a card medium in which music data is stored in a music playback apparatus having a push-push type card slot and using a card medium such as an SD card. An object of the present invention is to provide a music playback device capable of performing the above.

  A first invention for solving the above-described problem is a music playback device having a card slot corresponding to a card medium in which digital music data is stored. The music playback device according to the first invention has music data stored therein. The playback control corresponding to the elapsed time from when the card media is ejected to when it is inserted is determined so that playback control such as scratching and pausing can be performed by operating the stored card media. When it is detected that the card media is installed in the card slot in the unmounted state in which the card is not recognized, the state transitions from the unmounted state to the mounted state in which the card media is recognized, and is stored in the card media in the mounted state. Card media is ejected from the card slot when playing music data If it is detected, the playback of music data is paused and the elapsed time is measured without transitioning to the unmounted state, and the card media is inserted into the card slot after the elapsed time has started. When this is detected, a regeneration control means for performing regeneration control corresponding to the elapsed time at this time is provided.

  Further, the second invention is such that, in the music playback device according to the first invention, when the time when the card medium is not inserted after being ejected from the card slot is relatively long, the state can be changed from the mounted state to the unmounted state. If the card media is not inserted into the card slot even after the first set time for transitioning to the unmounted state, the playback control means completely stops playing the music data being played and then unmounts from the mounted state. It is characterized by state transition to a state.

  According to a third aspect of the present invention, in the music playback device according to the first or second aspect, the playback control corresponding to the elapsed time from when the card medium is ejected until it is inserted can be arbitrarily defined. When the elapsed time is within the second set time for scratch playback so that scratch playback and pause can be performed by operating the media, the playback of music data is resumed after scratch playback is performed, Reproduction control for resuming reproduction of music data without performing scratch reproduction when a card medium is inserted into the card slot after the elapsed time exceeds the second set time and exceeds the first set time It is characterized by performing.

  According to a fourth invention, in the music playback device according to any one of the first invention to the third invention, a push-push type card slot is provided.

  Further, the fifth invention is an invention relating to a music reproducing method executed by a music reproducing apparatus provided with a card slot corresponding to a card medium for storing digital music data, and the music reproducing method according to the fourth invention. When the music playback apparatus detects that the card medium is inserted into the card slot in the unmounted state where the card medium is not recognized, the process a transitions from the unmounted state to the mounted state where the card medium is recognized a. When the music playback device is playing back music data stored in the card media in the mounted state, when detecting that the card media is ejected from the card slot, the music playback is paused, The elapsed time from when the card media is ejected from the card slot to when it is inserted A process b for starting measurement, and a process c for performing reproduction control corresponding to the elapsed time at this time when the music reproducing apparatus detects that the card medium is inserted into the card slot. .

  Furthermore, a sixth aspect of the music playback method according to the fifth aspect of the present invention is that, in the music playback method according to the fifth aspect, the music playback device has reached a first set time for causing the state transition to the unmount state so that the state transition can be performed from the mount state to the unmount state. However, when the card medium is not inserted into the card slot, the process includes a step d of completely changing the music data playback and then transitioning from the mounted state to the unmounted state.

  In a general music playback apparatus using a card medium having a card slot, when playing music data stored in the card medium in the mounted state, the card medium is unmounted when the card medium is ejected from the card slot. According to the above-described invention, even when the music data stored in the card medium is being played back in the mounted state, even if the card medium is ejected from the card slot, the state transition is made to the unmounted state at this time. Therefore, playback control can be performed by operating a card medium in which music data is stored.

  In addition, the operation of the card media after the card media is ejected from the card slot is always an operation to insert the card media into the card slot. By measuring the time and executing the playback control corresponding to the elapsed time, it is possible to change the playback control to be executed at the timing when the card medium is mounted after being ejected from the card slot.

The figure explaining the external appearance of the portable type music reproducing apparatus which concerns on this embodiment. The figure explaining the hardware of the music reproduction apparatus of this embodiment. The figure explaining the state and state transition of a music reproduction apparatus. The figure explaining the procedure which the reproduction | regeneration control means of a music reproduction apparatus performs. The figure explaining DJ equipment which handles a record board.

  Embodiments of the present invention will now be described to the extent that those skilled in the art of the present invention can implement the invention with reference to the accompanying drawings.

  FIG. 1 is a diagram for explaining the appearance of a portable music playback device 1 according to this embodiment. The music playback device 1 of this embodiment includes a push-push type card slot 1j as a mechanism for mounting and ejecting a card medium 2 such as an SD card in which digital music data is stored. It is characterized in that regeneration control can be performed by a discharge operation. In FIG. 1, the music playback device 1 of the present embodiment is a mobile phone, but as a form other than the mobile phone, a form of a music playback dedicated machine or a smartphone can be assumed. Further, the card slot mounting / discharging mechanism is not limited to the push-push type but may be of another type, and may be a card slot for manual mounting / discharging. When the push-push method is applied, the operability of loading / discharging the card medium 2 is improved.

  FIG. 2 is a diagram illustrating hardware of the music playback device 1 according to the present embodiment. As shown in FIG. 2, the music playback device 1 of the present embodiment includes a processor 1a in which a CPU, a RAM, a ROM, and the like are mounted as hardware. The processor 1a includes an antenna 1c that receives radio. The connected wireless communication circuit 1b, memory 1d, clock circuit 1e, display 1f such as liquid crystal, operation key 1g, earphone / microphone 1h, and encoding / decoding of music data conforming to a specific method (for example, MP3) An audio codec 1i having a function, a push-push type card slot 1j, and a battery 1k are connected.

  The push-push type card slot 1j is loaded with a card medium 2 serving as an external storage device of the music reproducing apparatus 1, and the card medium 2 has a memory 20 for storing music data reproduced by the music reproducing apparatus 1. A card I / F 21 that becomes an I / F (IF: InterFace) with the card slot 1j of the music playback device 1 is provided.

  Further, in the music playback device 1 of the present embodiment, a card mounted in a push-push type card slot 1j using an audio codec 1i or the like as a function realized by using a computer program for operating the processor 1a. A playback control means 10 for controlling playback of music data stored in the memory 20 of the medium 2 is provided.

  FIG. 3 is a diagram illustrating the state and state transition of the music playback device 1. The music playback device 1 has two states of the music playback device 1: a mounted state in which the card media 2 is recognized on the music playback device 1 side and an unmounted state in which the card media 2 is not recognized on the music playback device 10 side. In the mounted state, the music data stored in the memory 20 of the card medium 2 can be played back, and in the unmounted state, the music data stored in the memory of the card medium 2 cannot be played back. .

  The state transition between the mount state and the unmount state uses a detection signal of the card medium 2 obtained from the card slot. This detection signal is turned on when the card medium 2 is inserted into the card slot 1j, and the card medium 2 Is turned off when the card is ejected from the card slot 1j.

  As shown in FIG. 3, when the music playback device 1 is in the unmounted state and the detection signal of the card slot 1j is turned on, the state of the music playback device 1 changes to the mounted state (A in FIG. 3). ). Further, when the music playback device 1 is in the mounted state, if the detection signal of the card slot 1 is turned on and then turned on, the elapsed time from when the detection signal of the card slot 1j is turned off to on. The reproduction control corresponding to is performed, and the state of the music reproduction device 1 is maintained in the mounted state (B in FIG. 3). If the first set time (for example, 10 minutes) elapses after the detection signal of the card slot 1 is turned off, the state of the music playback device 1 changes to an unmounted state (see FIG. 3 C).

  The reproduction control corresponding to the elapsed time from when the detection signal of the card slot 1j is turned off to when it is turned on can be arbitrarily set, but the elapsed time after the detection signal of the card slot 1j is turned off If the detection signal is turned on before reaching the set time 2 (for example, 1 second), the reproduction of the music data that has been paused is resumed after scratch reproduction, and the detection signal of the card slot 1j is turned off. When the elapsed time after the first time exceeds the second set time and becomes ON before reaching the first set time, the reproduction of the music data paused is resumed without the scratch reproduction. Further, the “scratch playback” here means that the same portion is repeatedly played back for a certain period of time (for example, 1 second).

  Note that the music data stored in the memory 20 of the card medium 2 can be played back while the music data is sequentially read out from the memory 20 of the card medium 2 and the music data stored in the memory 20 of the card medium 2. There is a method of reading out all music data stored in the memory 1d of the music playback device 1 and playing back the music data stored in the memory 1d of the music playback device 1. In this embodiment, any method is selected. it can. When the former method is adopted, since the card media 2 is ejected during the reproduction of the music data, both the music playback device 1 and the card media 2 are provided with anti-tearing (memory protection function when the media is pulled out). It is necessary to keep.

  FIG. 4 is a diagram for explaining the procedure executed by the playback control means 10 of the music playback device 1.

  When the playback control means 10 of the music playback device 1 is activated, the music playback device 1 is put in an unmounted state, and then waits until the card media 2 is loaded in the push-push type card slot 1j (S1). When the detection signal of the card slot 1j is turned ON, the playback control means 10 performs an operation of recognizing the card medium 2 attached to the card slot 1j, and changes the state of the music playback device 1 from the unmounted state to the mounted state. (S2).

  When the state of the music playback device 1 is changed to the mounted state, the playback control means 10 of the music playback device 1 reads and reads the music data stored in the memory 20 of the card medium 2 attached to the card slot 1j. A process of fetching music data into the memory 1d of the music playback device 1 is performed (S3).

  When the music data read from the card media 2 attached to the card slot 1j is loaded into the memory 1d, the playback control means 10 of the music playback device 1 displays a list of music included in the music data read from the card media 2. The music data read from the card medium 2 is set in a standby state, for example, by displaying it on If (S4).

  After the music data read from the card medium 2 is set in the standby state, when the music data to be played is designated by operating the operation key 1g of the music playing device 1, the music playing device 1 The reproduction control means 10 reproduces music data designated using the audio codec 1i (S5).

  If the detection signal of the card slot 1j is turned off while music data is being played back, the playback control means 10 of the music playback device 1 stores the playback position at this time and then pauses playback of the music data. After that (S6), the elapsed time after the detection signal of the card slot 1j is turned off is measured using the clock circuit 1e (S7).

  When the elapsed time from when the detection signal of the card slot 1j is turned off exceeds the first set time, the playback control means 10 of the music playback device 1 does not turn on. Deletes the stored playback position and completely stops the playback of the music data (S9), and then performs the operation of releasing the recognition of the card medium 2 attached to the card slot 1j. The state is changed from the mounted state to the unmounted state (S10), and this procedure ends.

  Further, in the present embodiment, when the elapsed time from when the detection signal of the card slot 1j is turned off to when it is on is within the second set time, the playback control means 10 of the music playback device 1 stores it. Scratch playback is performed once with the playback position as a reference (S8), and then the process returns to S5 of this procedure to restart playback of music data from the stored playback position.

  Furthermore, if the elapsed time from when the detection signal of the card slot 1j is turned OFF to when it is ON exceeds the second set time and is within the first set time, the playback control means 10 of the music playback device 1 The process returns to S5 of this procedure without scratch reproduction, and the reproduction of music data is resumed from the stored reproduction position.

DESCRIPTION OF SYMBOLS 1 Music playback device 10 Playback control means 1j Card slot 1d Memory of music playback device 2 Card media 20 Memory of card media

Claims (6)

  A card slot corresponding to a card medium in which digital music data is stored, and an unmount in which playback control corresponding to an elapsed time from when the card medium is ejected until it is inserted is determined, and the card medium is not recognized. In the state, when it is detected that the card medium is inserted into the card slot, the state transitions from the unmounted state to the mounted state that recognizes the card medium, and is stored in the card medium in the mounted state. When it is detected that the card medium is ejected from the card slot while music data is being played back, music data playback is paused and measurement of the elapsed time is started without transitioning to the unmounted state. And start measuring the elapsed time Wherein the card medium is detected that is attached to the card slot, the music reproducing apparatus is characterized in that and a reproduction control means for performing a reproduction control corresponding to the time elapsed at this time.   If the card media is not inserted into the card slot even after the first set time for state transition to the unmounted state is reached, the playback control means completely stops playing the music data being played, The music playback device according to claim 1, wherein a state transition is made from the mounted state to the unmounted state.   If the elapsed time is within the second set time for scratch playback, the playback control means restarts music data playback after performing scratch playback, and sets the elapsed time to the second set time. When the card medium is inserted into the card slot after the first set time is exceeded, reproduction control for resuming reproduction of music data without performing scratch reproduction is defined. The music reproducing device according to claim 1 or 2, characterized by the above.   The music playback device according to any one of claims 1 to 3, wherein the music playback device includes a push-push type card slot.   A music playback method executed by a music playback device having a card slot corresponding to a card media storing digital music data, wherein the music playback device does not recognize the card media, When it is detected that the card medium is inserted into the card slot, the process a transitions from the unmounted state to a mounted state that recognizes the card medium, and the music playback device is configured to switch the card in the mounted state. When it is detected that the card media is ejected from the card slot while music data stored in the media is being played back, the music data playback is paused and the card media is ejected from the card slot. Measure elapsed time from wearing Starting process b, and when the music playback device detects that the card medium is inserted into the card slot, the process c performs playback control corresponding to the elapsed time at this time. Characteristic music playback method. If the card media is not inserted into the card slot even after the first set time for state transition to the unmounted state is reached, the music playback device completely stops playback of music data and then from the mounted state to the 5. The music reproducing method according to claim 4, further comprising a step d of state transition to an unmounted state.

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