JP2011137977A - Stationary acoustic device and musical piece file reproduction control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stationary acoustic device and a musical piece file reproduction control system, capable of suppressing useless power consumption of the mobile acoustic device. <P>SOLUTION: When the mobile acoustic device 100 transmits musical piece information of a musical piece file in which streaming reproduction is to be performed by wireless communication to a navigation device 200, the navigation device 200 determines whether or not, a musical piece file including a meta-data matching the transmitted musical information is stored in itself, and if it is stored, the device 200 notifies the mobil acoustic device 100 of the fact by wireless communication, a sound data of the musical piece file stored in itself is reproduced from a speaker 20. By that notification, streaming reproduction is not performed by the mobile acoustic device 100. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to music file reproduction control by a portable audio device and a stationary audio device.

  Recently, various small and portable portable audio devices have been developed that can store music files such as MP3 (MPEG-1 Audio Layer-3) files in an internal memory or hard disk, and can play back music files. ing. On the other hand, devices that can store music files in an internal memory, a hard disk, etc. and can reproduce music files have also been developed for in-vehicle navigation devices and in-vehicle audio devices that are stationary. Various reproduction control systems including a portable acoustic device and a stationary acoustic device have been proposed (for example, Patent Documents 1 and 2).

  Here, conventionally, audio data of a music file stored in the portable audio device is transmitted from the portable audio device to the stationary audio device by wireless communication, and the audio data transmitted in the stationary audio device is reproduced from the speaker. A playback method called streaming playback has been developed.

Japanese Patent Laid-Open No. 2003-7040 JP 2009-147575 A

  However, in the conventional portable audio device, even when the same music as the music to be streamed is stored in the stationary audio device, the streaming audio is played back, and thus the power of the portable audio device is wasted. However, there is a problem that it is not desirable for a portable acoustic device in which low power consumption is desirable.

  In view of the above problems, an object of the present invention is to provide a stationary acoustic device and a music file reproduction control system that can suppress wasteful power consumption of a portable acoustic device.

In order to achieve the above object, the present invention can receive audio data of a music file stored in a portable audio device from the portable audio device by communication, and reproduce the received audio data from an audio generator. In a stationary acoustic device,
When the music information of the music file stored in the portable audio device is received from the portable audio device by communication, it is determined whether or not the music file having information matching the received music information is stored in the device.
If stored, the audio data of the music file is played from the audio generator,
If not stored, the audio data of the music file stored in the portable audio device is received from the portable audio device by communication, and the received audio data is reproduced from the audio generator.

  According to such a configuration, if the same music as the music stored in the portable audio device is stored in the stationary audio device, the music is played on the stationary audio device side and notified to the portable audio device. This makes it possible for the portable audio device not to transmit the audio data of the music to the stationary audio device, so that it is possible to suppress wasteful power consumption of the portable audio device where low power consumption is desirable. Become.

Further, in the above configuration, an instruction according to a selection result on a screen for selection by a user displayed on the portable acoustic device is received from the portable acoustic device by communication,
In response to the received instruction, the sound data of the music file stored in the device is reproduced from the sound generator, or the sound data of the music file stored in the portable sound device is transmitted from the portable sound device by communication. It is good also as a structure which switches whether it receives and reproduces the received audio | voice data from the said audio | voice generating part.

  According to such a configuration, if the same music as the music stored in the portable acoustic device is stored in the stationary acoustic device, the user can use the stationary type from the selection screen displayed on the portable acoustic device. It is possible to select whether to reproduce the music file on the audio device side or to reproduce the music file on the portable audio device side.

  In any one of the above configurations, the music information may include at least a music name among a music name, an artist name, and an album name.

  In any of the above configurations, the communication with the portable acoustic device may be wireless communication. Unlike wired communication, wireless communication makes it difficult to supply power from a stationary acoustic device to a portable acoustic device. Therefore, low power consumption of the portable acoustic device is more desirable, and the effects of the present invention are more effective. Become.

  In any of the above configurations, the stationary acoustic device may be mounted on a vehicle. When the stationary acoustic device is mounted on a vehicle, the portable acoustic device is used at the destination, so that low power consumption is more desirable, and the effects of the present invention are more effective.

In order to achieve the above object, the present invention includes a portable acoustic device and a stationary acoustic device, and the stationary acoustic device communicates audio data of a music file stored in the portable acoustic device. In the music file reproduction control system for reproducing the audio data transmitted from the stationary acoustic device from the audio generation unit,
When the portable audio device transmits the music information of the music file stored in the portable audio device to the stationary audio device by communication, the stationary audio device has a music file having information matching the transmitted music information. Determine if it is remembered by self,
When stored, the stationary acoustic device reproduces the sound data of the music file stored therein from the sound generator, and when not stored, the stationary acoustic device is the portable acoustic device. The voice data transmitted from the voice generator is reproduced from the voice generator.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to suppress the useless power consumption of a portable audio equipment.

It is a figure which shows schematic structure of the portable audio apparatus which concerns on this invention, and the navigation apparatus which concerns on this invention. It is a flowchart which shows music file reproduction | regeneration control by the portable audio apparatus which concerns on this invention, and the navigation apparatus which concerns on this invention. It is a flowchart which shows the modification of the music file reproduction | regeneration control by the portable audio apparatus which concerns on this invention, and the navigation apparatus which concerns on this invention. It is a figure which shows an example of the screen for selection displayed on a portable acoustic device.

  Embodiments of the present invention will be described below with reference to the drawings. Here, an in-vehicle navigation device will be described as an example of the stationary acoustic device of the present invention.

  FIG. 1 shows a schematic configuration of a portable acoustic device 100 according to the present invention and a navigation device 200 that is a stationary acoustic device according to the present invention.

  The portable acoustic device 100 is a small and portable music file playback device, and includes a storage device 1, a communication unit 2, a display unit 3, a sound source circuit unit 4, a sound processing unit 5, and an operation unit 6. The control unit 7 and the audio terminal 8 are provided. An earphone 9 is connected to the audio terminal 8.

  The storage device 1 includes an HDD (Hard Disk Drive), a memory IC chip, and the like, and stores music files. The music file is composed of metadata such as a music name, artist name, and album name, and audio data encoded in an encoding format such as MP3.

  The communication unit 2 performs wireless communication based on standards such as Bluetooth, Wi-Fi (Wireless Fidelity), IrDA (Infrared Data Association), etc. with the communication unit 14 of the navigation device 200, and transmits voice data to the communication unit 14. Transmission or transmission / reception of control system data to / from the communication unit 14 is performed.

  The display unit 3 is composed of an LCD or the like, and displays various information such as a music file list and a reproduction status. The sound source circuit unit 4 converts the digital audio signal from the control unit 7 into an analog audio signal, and outputs the analog audio signal to the earphone 9 via the audio terminal 8. The earphone 9 is worn on the user's ear and generates sound based on the input analog sound signal.

  The audio processing unit 5 has a function of decoding audio data encoded in an encoding format such as MP3, and a function of encoding audio data in an encoding format such as SBC.

  The operation unit 6 includes various keys, and can give instructions to the portable acoustic device 100. The control unit 7 includes a CPU, a RAM, a ROM, and the like, and comprehensively controls the portable acoustic device 100.

  During normal playback, the control unit 7 reads out the audio data of the music file from the storage device 1 and sends it to the audio processing unit 5. The audio processing unit 5 decodes the audio data, and the control unit 7 outputs the decoded audio data. The sound source circuit unit 4 converts the digital sound signal into an analog sound signal, and the sound of the music is generated from the earphone 9. In addition to the normal playback function, the portable audio device 100 has a stream playback function, which will be described later.

  The navigation device 200 is mounted on a vehicle, specifies the current location of the vehicle (own vehicle position) based on radio waves received from a GPS (Global Positioning System) satellite, and shows a map of the vicinity of the vehicle along with the vehicle position. The main function is to display the displayed navigation screen and guide the vehicle to the destination along the guide route, but also has a music file playback function.

  The navigation device 200 includes a GPS unit 10, a gyro sensor 11, a vehicle speed sensor 12, an interface unit 13, a communication unit 14, a storage device 15, a drawing unit 16, a display control unit 17, and a display unit 18. A sound source circuit unit 19, a speaker 20, an audio processing unit 21, an interface unit 22, a hard key 23, a position detection unit 24, a touch panel 25, and a control unit 26.

  The GPS unit 10 includes a receiving antenna, a tuner, and the like. The GPS unit 10 processes radio waves received from GPS satellites and extracts positioning data. The retrieved positioning data is sent to the control unit 26 via the interface unit 13. The control unit 26 identifies the vehicle position based on the positioning data sent from the GPS unit 10.

  The navigation device 200 employs a so-called hybrid system, and also uses a gyro sensor 11 for detecting the direction of the vehicle and a vehicle speed sensor 12 for detecting the speed of the vehicle. Detection signals from the gyro sensor 11 and the vehicle speed sensor 12 are sent to the control unit 26 via the interface unit 13, and the control unit 26 specifies the direction and speed of the vehicle based on those signals.

  As described above, the communication unit 14 performs wireless communication with the communication unit 2 of the portable acoustic device 100.

  The control unit 26 performs overall control of the navigation device 200 and executes various processes such as vehicle position specification and route search. The control part 26 is comprised, for example with the microcomputer, and contains CPU, RAM, and ROM.

  The storage device 15 can employ an HDD, a memory IC chip, or the like, and stores a map database necessary for displaying a navigation screen or searching for a route. The storage device 15 also stores music files.

  The map database is used to generate map data, drawing parameters that are referenced when drawing navigation screens based on map data, index data that is referenced in various searches, and voice for route guidance and other purposes. Audio data is included. And the control part 26 takes out data required for operation to perform partially from a map database, and refers it.

  The drawing unit 16 is an IC chip that includes a drawing-dedicated CPU and the like, and creates navigation screen image data, operation screen image data, and the like based on instructions from the control unit 26. The image data created by the drawing unit 16 is sent to the display control unit 17 and stored in a RAM included in the display control unit 17. The display control unit 17 sends an image display signal to the display unit 18 based on the stored image data, and causes the display area of the display unit 18 to display a screen related to the image data. An LCD, an organic EL display, or the like is used for the display unit 18.

  The sound source circuit unit 19 generates an analog audio signal for route guidance and other uses, and an analog audio signal of music based on the audio data sent from the control unit 26. The speaker 20 generates sound based on the generated analog audio signal.

  The audio processing unit 21 has a function of decoding audio data encoded in an encoding format such as MP3 or SBC.

  The hard keys 23 and the touch panel 25 are for giving instructions to the navigation device 200. When one of the keys constituting the hard key 23 is pressed, a signal notifying that the key is pressed is sent to the control unit 26 via the interface unit 22.

  The touch panel 25 is a pressure-sensitive panel having transparent electrodes arranged in a grid, for example, and is disposed on the display area of the display unit 18. When the touch panel 25 is pressed, the position detection unit 24 generates a signal notifying the coordinate information of the pressed position based on the voltage signal sent from the touch panel 25. This signal is sent to the control unit 26 via the interface unit 22.

  During normal playback, the control unit 26 reads out the audio data of the music file from the storage device 15 and sends it to the audio processing unit 21. The audio processing unit 21 decodes the audio data, and the control unit 26 outputs the decoded audio data. The sound of the music is generated from the speaker 20 by being sent to the sound source circuit unit 19.

  Further, the streaming reproduction will be described. The control unit 7 of the portable audio device 100 reads out the audio data of the music file from the storage device 1 and sends it to the audio processing unit 5. The audio processing unit 5 once decodes the sent audio data. Then, encode for wireless communication. As the encoding format, SBC may be used when the wireless standard is Bluetooth. Then, the control unit 7 sends the encoded voice data to the communication unit 2, and the communication unit 2 converts the sent voice data into a radio signal and transmits it to the communication unit 14 of the navigation device 200.

  Then, the communication unit 14 receives the transmitted radio signal and returns it to the encoded audio data, and the control unit 26 sends the encoded audio data to the audio processing unit 21. Then, the audio processing unit 21 decodes the encoded audio data, and the control unit 26 sends the decoded audio data to the sound source circuit unit 19, and the audio of the music is generated from the speaker 20.

  Next, music file reproduction control by the portable acoustic device 100 and the navigation device 200 will be described using the flowchart of FIG.

  The process shown in FIG. 2 is started when a streaming playback start operation is performed by the operation unit 6 of the portable audio device 100. First, in step S <b> 1, the control unit 7 of the portable audio device 100 transmits the metadata of the music file to be streamed and played back to the communication unit 14 via the communication unit 2 as music information. Here, as the music information, the music name, artist name, and album name may be transmitted. Note that it is not always necessary to transmit these three pieces of data, and at least the music title may be transmitted.

  In step S6, when the control unit 26 of the navigation device 200 receives the music information via the communication unit 14, the process proceeds to step S7, and the control unit 26 receives a music file having metadata that matches the received music information. It is determined whether it is stored in the storage device 15.

  If such a music file is stored in the storage device 15 (Y in step S7), the process proceeds to step S8, and the control unit 26 sends notification data to that effect via the communication unit 14 to the communication unit. 2 is transmitted. Then, when the control unit 7 of the portable acoustic device 100 receives the notification data via the communication unit 2, it is determined that the navigation device 200 holds the same music as the music that is to be streamed (step S2). Y) In step S3, the control unit 7 does not perform streaming playback.

  On the other hand, in the navigation device 200, after step S8, in step S9, the control unit 26 reads out the audio data of the music file from the storage device 15 for normal reproduction. When the reproduction ends, the control unit 26 transmits notification data to that effect to the communication unit 2 via the communication unit 14 in step S10. In step S4, when the control unit 7 receives the notification data via the communication unit 2, the process returns to step S1 for the music file to be streamed next.

  In step S7, if a music file having metadata matching the received music information is not stored in the storage device 15 (N in step S7), the process proceeds to step S11, and the control unit 26 notifies that fact. The notification data to be transmitted is transmitted to the communication unit 2 via the communication unit 14. Then, when the control unit 7 of the portable audio device 100 receives the notification data via the communication unit 2, it is determined that the navigation device 200 does not hold the same music as the music to be streamed (step S2). N) In steps S5 and S12, the portable audio device 100 and the navigation device 200 cooperate to perform streaming playback. The audio data of the music file stored in the storage device 1 is reproduced from the speaker 20 by streaming reproduction. When the streaming reproduction ends, the process returns to step S1 for the music file to be streamed next.

  In this way, if the same music as the music to be streamed is held on the navigation device 200 side, the music held on the navigation device 200 side is played, and streaming playback is performed on the portable acoustic device 100 side. Therefore, it is possible to suppress wasteful power consumption of the portable acoustic device 100 where low power consumption is desirable.

  Next, a modification of the music file reproduction control described with reference to FIG. 2 will be described with reference to the flowchart of FIG.

  The process shown in FIG. 3 is started when a streaming playback start operation is performed by the operation unit 6 of the portable audio device 100. First, in step S <b> 21, the control unit 7 of the portable audio device 100 transmits the metadata of the music file to be streamed and played back to the communication unit 14 via the communication unit 2 as music information. The music information is as described above.

  In step S29, when the control unit 26 of the navigation device 200 receives the music information via the communication unit 14, the process proceeds to step S30, where the control unit 26 receives a music file having metadata that matches the received music information. It is determined whether it is stored in the storage device 15.

  If such a music file is stored in the storage device 15 (Y in step S30), the process proceeds to step S31, and the control unit 26 sends notification data to that effect via the communication unit 14 to the communication unit. 2 is transmitted. Then, when the control unit 7 of the portable acoustic device 100 receives the notification data via the communication unit 2, it is determined that the navigation device 200 holds the same music as the music that is to be streamed (step S22). Y) In step S23, the control unit 7 causes the display unit 3 to display a screen for the user to select whether or not to reproduce on the navigation device 200 side. An example of this screen is shown in FIG.

  When playback on the navigation device 200 side is selected by the operation unit 6 on the selection screen (Y in step S24), the process proceeds to step S25, and the control unit 7 sends a playback instruction to the communication unit 14 via the communication unit 2. And streaming playback is not performed. When the control unit 26 receives a reproduction instruction via the communication unit 14 (Y in step S32), the process proceeds to step S33, and the control unit 26 reads out the audio data of the music file from the storage device 15 and normally reproduces it. . When the reproduction is completed, the control unit 26 transmits notification data to that effect to the communication unit 2 via the communication unit 14 in step S34. When the control unit 7 receives the notification data via the communication unit 2 in step S26, the process returns to step S21 for the music file to be streamed next.

  Further, when the operation unit 6 selects not to reproduce on the navigation device 200 side on the selection screen (N in Step S24), the process proceeds to Step S27, and the control unit 7 gives an instruction not to reproduce via the communication unit 2. When the control unit 26 receives an instruction not to reproduce via the communication unit 14 (N in step S32), the portable acoustic device 100 and the navigation device 200 cooperate in steps S28 and S36. Streaming playback is then performed. When the streaming reproduction ends, the process returns to step S21 for the music file to be streamed next.

  In step S30, if a music file having metadata matching the received music information is not stored in the storage device 15 (N in step S30), the process proceeds to step S35, and the control unit 26 notifies that fact. The notification data to be transmitted is transmitted to the communication unit 2 via the communication unit 14. Then, when the control unit 7 of the portable acoustic device 100 receives the notification data via the communication unit 2, it is determined that the navigation device 200 does not hold the same music as the music that is to be streamed (Step S22). N) In step S28 and step S36, the portable audio device 100 and the navigation device 200 cooperate to perform streaming reproduction. When the streaming reproduction ends, the process returns to step S21 for the music file to be streamed next.

  In this way, if the same music as the music to be streamed is held on the navigation device 200 side, the selection screen is displayed on the portable audio device 100 by the notification from the navigation device 200, and the navigation device 200 is displayed by the user. If playback is selected on the side, the music stored on the navigation device 200 side is played back, and streaming playback is not performed on the mobile audio device 100 side. It is possible to suppress wasteful power consumption. Further, if the user selects not to reproduce on the navigation device 200 side, streaming reproduction is performed, so that the user can reproduce the music file to be reproduced.

  As mentioned above, although embodiment of this invention was described, if it is in the range of the meaning of this invention, embodiment can be variously changed.

  For example, transmission of audio data and control system data is not limited to wireless transmission, but may be wired such as USB (Universal Serial Bus).

  Further, the stationary acoustic device of the present invention is not limited to a vehicle-mounted navigation device, and may be applied to a vehicle-mounted audio device, a home audio component, and the like.

DESCRIPTION OF SYMBOLS 100 Portable audio apparatus 200 Navigation apparatus 1 Memory | storage device 2 Communication part 3 Display part 4 Sound source circuit part 5 Audio | voice processing part 6 Operation part 7 Control part 8 Audio | voice terminal 9 Earphone 10 GPS part 11 Gyro sensor 12 Vehicle speed sensor 13 Interface part 14 Communication Unit 15 Storage device 16 Drawing unit 17 Display control unit 18 Display unit 19 Sound source circuit unit 20 Speaker 21 Audio processing unit 22 Interface unit 23 Hard key 24 Position detection unit 25 Touch panel 26 Control unit

Claims (6)

In a stationary acoustic device capable of receiving audio data of a music file stored in a portable acoustic device from the portable acoustic device by communication and reproducing the received audio data from an audio generation unit,
When the music information of the music file stored in the portable audio device is received from the portable audio device by communication, it is determined whether or not the music file having information matching the received music information is stored in the device.
If stored, the audio data of the music file is played from the audio generator,
If not stored, the audio data of the music file stored in the portable audio device is received from the portable audio device by communication, and the received audio data is reproduced from the audio generator. Stationary acoustic device. An instruction according to the selection result on the screen for selection by the user displayed on the portable acoustic device is received from the portable acoustic device by communication,
In response to the received instruction, the sound data of the music file stored in the device is reproduced from the sound generator, or the sound data of the music file stored in the portable sound device is transmitted from the portable sound device by communication. 2. The stationary acoustic apparatus according to claim 1, wherein whether the received audio data is received or switched is reproduced from the audio generation unit.   The stationary audio apparatus according to claim 1, wherein the music information includes at least a music name among a music name, an artist name, and an album name.   The stationary acoustic device according to any one of claims 1 to 3, wherein the communication with the portable acoustic device is wireless communication.   The stationary acoustic apparatus according to claim 1, wherein the stationary acoustic apparatus is mounted on a vehicle. The portable audio device includes a portable audio device and a stationary audio device, and the portable audio device transmits audio data of a music file stored in the portable audio device to the stationary audio device by communication, and the stationary audio device is transmitted In a music file playback control system for playing back audio data from a sound generator,
When the portable audio device transmits the music information of the music file stored in the portable audio device to the stationary audio device by communication, the stationary audio device has a music file having information matching the transmitted music information. Determine if it is remembered by self,
If stored, the stationary acoustic device reproduces the audio data of the music file stored therein from the audio generator,
If not stored, the stationary audio device causes the audio data transmitted from the portable audio device to be reproduced from the audio generator.

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