JP2007164914A - On-vehicle music reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle music reproducing device capable of totally controlling and reproducing musical pieces stored in a plurality of music reproducing device without redundancy, and also reproducing the music always stably even when the respective music reproducing devices are connected. <P>SOLUTION: In the on-vehicle music reproducing device A, a music list extraction section 3 extracts music lists from the respective music reproducing devices B to D when the music reproducing devices B to D are connected to the on-vehicle music reproducing device A, a sound quality comparison section 4 compares sound qualities of duplicated music in all extracted music lists to automatically select music having high sound qualities from the duplicated music and generates a total music list together with the non-duplicate music, so that the music can be reproduced based upon the total music list by using a music reproduction section 9, amplifiers 10, and speakers 11. Even when music held by the music reproducing devices B, C, and D are duplicated, music having high sound qualities can be selected from the duplicated music and reproduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an in-vehicle playback apparatus that plays back a plurality of multimedia data.

2. Description of the Related Art In recent years, in-vehicle music playback apparatuses include an HDD (hard disk drive) and a flash memory, and can store (save) and play back music data (music data) by compressing the HDD or flash memory in a predetermined compression format. What was made is known (for example, patent document 1). In addition, portable audio devices equipped with a large-capacity flash memory and HDD can be brought into the car and connected to an in-vehicle audio or navigation device for playback.
JP 2003-141855 A

  However, when a plurality of such music playback devices are connected to the in-vehicle audio system or the navigation device and the music stored in each of the music playback devices is played back, the user desires because the number of stored music is large. It was troublesome to select the music to be played. In addition, when a plurality of music playback devices are connected, the same music may be duplicated, and the same music may be reproduced many times unintentionally.

  Therefore, the present invention is an in-vehicle device that can play back music in a stable state at the same time while being able to integrally control and play back music stored in each music playback device even when a plurality of music playback devices are connected. An object is to provide a music playback device.

  The in-vehicle music playback device according to the present invention is configured so that at least two or more music playback devices can be connected, and the in-vehicle music playback device reads out and plays back the music stored in the music playback device, which is stored in the music playback device. A music list extracting means for extracting a list of the recorded music, a sound quality comparing means for comparing the sound quality of duplicate music in each music list extracted by the music list extracting means, and a high sound quality music compared by the sound quality comparing means And a general music list creation means for creating a general music list by integrating music excluding duplicate music from each music list, and reproducing the music based on the general music list .

According to the in-vehicle music playback device configured as described above, a plurality of music playback devices are configured to be connectable, and a music list is extracted from the music playback device connected to the on-vehicle music playback device, and a plurality of music Compare the sound quality of duplicate music in the music list extracted from the playback device, create a comprehensive music list with high quality music among the duplicate music, and play music based on this general music list, Since music stored in multiple music playback devices can be played back by the on-board music playback device, and even if the same music is duplicated, only high-quality music can be played back. Can be prevented.
Note that the music reproducing device is a portable audio using a flash memory or the like, a hard disk audio, a CD (Compact Disc), a DVD-Audio (DV Audio), or the like. The music list is a list of the music, music tone, compression rate, etc. of the music (music) stored in the music playback device.

In addition, the in-vehicle music playback device of the present invention includes sound quality selection means for selecting high-quality music and low-quality music when the sound quality comparison means compares the sound quality of the duplicate music pieces. Has been.

  According to the on-vehicle music playback device configured as described above, when the music quality comparison means compares the music pieces duplicated in the music list extracted from each music playback device, the sound quality selection means is used to compare the low-quality music music with the low-quality music music. Can separate music with sound quality. For this reason, when creating a comprehensive music list, it is possible to create a general music list by selecting a high-quality music even when there are a plurality of duplicate music.

  Further, the sound quality selection means of the in-vehicle music playback device of the present invention comprises low sound quality music list creation means for creating a low sound quality music list.

  According to the in-vehicle music reproducing apparatus configured as described above, when the duplicated music is sorted into the high-quality sound and the low-quality music by the sound quality selection means, the low-quality music list creation means creates the low-quality music list. Can be created. For this reason, a comprehensive music list edited with high sound quality and a low sound quality music list can be provided.

  Also, the in-vehicle music playback device of the present invention reconstructs the general music list when the resource management means determines that the resource management means is short of resources, and resource management means for managing system resources during music playback It is configured with reconstruction means.

  According to the in-vehicle music playback device configured as described above, the resource management means manages the system resources of the in-vehicle music playback device during music playback, and if the system resources are insufficient during music playback, the resource management means In this case, the lack of lease can be resolved by reconstructing the comprehensive music list.

  Further, the reconstruction means of the in-vehicle music playback device of the present invention is configured such that when the resource management means detects a shortage of system resources, whether or not the alternative music of the comprehensive music list is in the low-quality music list Confirmation means for determining whether or not the resource shortage can be resolved by changing to the substitute music confirmed by the confirmation means, the resource shortage is resolved in the determination means When it is determined that the alternative music is selected, the alternative music is switched.

  According to the in-vehicle music playback device configured as described above, when system resources are insufficient, the confirmation means confirms whether the alternative music for the music in the general music list is in the low sound quality music list, When there are low-quality alternative songs, it is determined whether or not the resource shortage can be resolved by changing to alternative songs, and when it is determined that it can be resolved, the music in the general music list and the low-quality music list are changed and played. be able to. For this reason, even if there is a shortage of system resources, if there is an alternative music of low sound quality for the music in the general music list, the shortage of resources can be resolved by changing to the alternative music and playing it.

  The on-vehicle music playback device of the present invention includes route guidance means for setting a destination and performing route guidance from the current position to the destination.

  According to the in-vehicle music reproducing apparatus configured as described above, the in-vehicle music reproducing apparatus is provided with route guidance means for setting the destination and performing route guidance from the current position to the destination, while performing the route guidance. Can be used.

As described above, the in-vehicle music playback device of the present invention selects a high-quality music without reproducing the same music repeatedly when connecting a plurality of music playback devices and playing the music of the music playback device. If there is a shortage of system resources, it is possible to check songs that can be replaced from the low-quality music list, reconstruct the general music list, and automatically switch to music data with less load. Therefore, it is possible to prevent the occurrence of sound interruption and reduce the resource shortage of the in-vehicle playback control device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The compression format in the music list will be described using MP3 (MPEG Audio Layer-3), AAC (Advanced Audio Coding), WMA, and the like. The embodiment shown below shows one example of the present invention, does not limit the present invention, and can be arbitrarily changed within the scope of the present invention.

(First embodiment)
FIG. 1 is a block diagram showing the configuration of an in-vehicle music playback device according to the first embodiment of the present invention.
As shown in FIG. 1, the in-vehicle music playback device A according to the first embodiment includes a control unit 1 that controls the in-vehicle music playback device A, a communication unit 2 configured to be connectable to the outside, and a communication unit. 2, a music list extraction unit 3 that extracts the music list of the music playback device connected to 2, a sound quality comparison unit 4 that compares the sound quality of the music duplicated in the music list extracted by the music list extraction unit 3, and each music list A general music list creation unit 5 that creates a general music list from the tuner, a tuner unit 6 that receives radio such as FM and AM, and a CD / DVD that plays music CDs and music DVDs. Playback unit 7, storage unit 8 that rips when music is played back by CD / DVD playback unit 7, playback of the music in the total music list created by total music playback list creation unit 5, and CD / DVD playback In part 7 A music playback unit 9 that plays back and plays back the music stored in the storage unit 8, an amplifier 10 that amplifies the music output from the playback music unit 9, and a speaker 11 that plays back and outputs the music amplified by the amplifier 10 The operation unit 12 is configured to operate the in-vehicle music playback device A and to operate connected devices (music playback device, CD / DVD playback unit, tuner unit, etc.).

Here, the control part 1 is provided with CPU, ROM, RAM, etc., and is comprised so that each part of the vehicle-mounted music reproduction apparatus A may be controlled.
The communication unit 2 has a command transmission function for instructing an external music playback device to perform playback, obtaining a list of music data, and a notification of playback status from the external playback device, A command receiving function for receiving a list is provided.

The music list extraction unit 3 is configured to be able to extract a music list stored in a music playback device connected to the communication unit 2.
The sound quality comparison unit 4 is configured to be able to compare the sound quality of the overlapping music from the music list of each music playback device extracted by the music list extraction unit 3 and the music list stored in the storage unit 8. Has been.

  Comprehensive music reproduction list creation means 5 can create a comprehensive music list that combines high-quality music and non-overlapping music among the duplicated music compared by the sound quality comparison unit 4. It is configured to be able to create a general music reproduction list that can reproduce music without duplication regarding the music stored in the music playback device connected to the device A and the music stored in the storage unit 8. Has been.

The tuner unit 6 can receive radio programs being broadcast by inputting radio waves such as FM radio, AM radio, and TV.
The DVD / CD playback unit 7 is configured to be able to play a music DVD (digital versatile disk) or a music CD (compact disc), and can be ripped and stored in the storage unit 8 simultaneously with the playback. It is configured as follows.

  The storage unit 8 is configured by a recording medium such as a hard disk drive (HDD) or a flash memory, and various control programs of the in-vehicle music playback device A executed by the control unit 1 and a comprehensive music playback list creation unit 5. Are stored in the music list extracted by the music list extraction unit 3, music data reproduced by the CD / DVD reproduction unit 7, and the like.

  The music reproduction unit 9 can reproduce the music in the general music list created by the general music reproduction list creation unit 5, the reproduction in the CD / DVD reproduction unit 7, and the music stored in the storage unit 8. It is configured to be able to.

  The operation unit 12 includes an operation button for instructing power on / off, an operation button for selecting music, an operation button for selecting a source (radio, music, external input from the communication unit) to be played by the in-vehicle music playback device, and the like. Then, the operation of the operation button is notified to the control unit 1 so that the on / off process of the power source of the in-vehicle music playback apparatus A, the music selection at the time of music playback, the playback operation process, etc. can be performed according to the operation of the operation button. It is configured.

  Next, the operation of the in-vehicle music playback device A in the first embodiment configured as described above will be described in detail. FIG. 2A and FIG. 2B are schematic diagrams showing the configuration of an example of a music playback device.

  As shown in FIG. 2A, the music playback device B (C) includes a control unit 1b (1c) that controls the music playback device B (C) and a communication unit 2b (2c) that enables connection to the outside. ), A music storage unit 8b (8c) for storing music, and a music reproduction unit 9b (9c) for reproducing music stored in the storage unit 8b (8c). In addition, although not shown in figure, the music reproducing apparatus B also has an operation part etc. which operate the music reproducing apparatus B (C), and it is not specifically limited.

  In addition, the storage unit 8b (8c) stores music and is configured to be able to play back music even with the music playback device B (C) alone. Examples of the music playback device include HDD audio, SD audio, flash memory audio, and the like as the music playback device.

  As shown in FIG. 2B, the music reproducing device D reads and reproduces music from the communication unit 2d, the DVD / CD reading unit 8d, and the DVD / CD reading unit 8d that can be connected to the outside. And a music playback unit 9d. Here, the DVD / CD reading unit 8d is configured to be able to read music data of a music DVD or music CD. For example, a portable DVD player or a portable CD player.

  Next, the operation when the on-vehicle music playback device A and the music playback devices B, C, and D are connected will be described with reference to the drawings. FIG. 3 is a schematic diagram showing a state in which each music playback device is connected to the in-vehicle music playback device, and FIG. 4A is a schematic diagram showing objects to be extracted by the music list extraction unit, and FIG. b) to FIG. 4E are music lists for each music playback device extracted by the music list extraction unit. FIG. 5A shows all the music lists extracted by the music list extraction unit, and FIG. 5B shows a duplicate list in which duplicate music is extracted from the music list of FIG. FIG. 6 is a comprehensive music list created by the in-vehicle music playback device.

  As shown in FIG. 3, when the communication units 2a of the music playback devices B, C, and D are connected to the communication unit 2 of the on-vehicle music playback device A, the music list A, The music list B, the music list C, and the music list D are extracted.

  At this time, the music list stored in the storage unit 8 of the in-vehicle music playback device A as shown in FIG. 4 (b) is set as the music list A, and the music playback device B as shown in FIG. 4 (c). 4B, all music stored in the unit 8b is set as a music list B, and as shown in FIG. 4D, all music stored in the storage unit 8c of the music playback device C is set as a music list C. As shown in e), the music list extraction unit 3 extracts the music that can be reproduced by the DVD / CD reading unit 8d of the music reproduction device D as the music list D.

  The music extracted by the music list extraction unit 3 is an all music list in which the music list D is collected from the music list A as shown in FIG. Since all the music lists include the same artist, music title, and music time that match, the sound quality comparison unit 4 is used to compare the sound quality of the overlapping music.

  At this time, the sound quality comparison unit 4 compares the bit rates of the overlapping music pieces as shown in FIG. 5B, selects a music piece having a high bit rate, and selects a high quality music piece. When there is an uncompressed music, an uncompressed music is selected.

  Next, as shown in FIG. 6, using the general music list creation unit 5, all the music except for the music duplicated in the whole music list and the high-quality music selected by the sound quality comparison unit 4 are newly used. Create a comprehensive song list. The total music list created by the total music list creation unit 5 is set by the music reproduction unit 9 to freely set, for example, reproduction based on the total music list, random reproduction, head-to-head reproduction, etc., and the amplifier 10 and the speaker 11. Can be used for playback (output).

  When the music playback device A of the present invention in the first embodiment configured as described above connects the music playback device B to the music playback device D to the car music playback device A, the music list extraction unit 3 A music list is extracted from each music playback device, the sound quality is compared with respect to the duplicate music in the entire music list extracted by the sound quality comparison unit 4, and a high-quality music is automatically selected from the duplicate music, A comprehensive music list can be created together with non-overlapping music, and the music can be played back based on the total music list using the music playback unit 9, amplifier 10, and speaker 11, so that the music playback devices B, C, Even when the music stored in D is duplicated, it is possible to select and reproduce a high-quality music from the duplicated music.

(Second Embodiment)
Next, a second embodiment will be described in detail with reference to the drawings. FIG. 7 is a block diagram showing the configuration of the in-vehicle music playback device in the second embodiment of the present invention. FIG. 8 is a block diagram illustrating a state in which each music playback device is connected to the second embodiment. FIG. 9A is a low sound quality music list of duplicate music created by the low sound quality music list creation unit, and FIG. 9B is a comprehensive music list in the second embodiment. In addition, the same code | symbol is attached | subjected to the same location as 1st Embodiment, and detailed description is abbreviate | omitted.

As shown in FIG. 7, the in-vehicle music playback device A1 in the second embodiment includes a control unit 1 that controls the in-vehicle music playback device A1, a communication unit 2 configured to be connectable to the outside, and a communication unit. 2, a music list extraction unit 3 that extracts the music list of the music playback device connected to 2, a sound quality comparison unit 4 that compares the sound quality of the music duplicated in the music list extracted by the music list extraction unit 3, and a sound quality comparison unit A low-sound quality music list creation unit 4a that creates a low-sound quality music list from the high-sound quality music and low-sound quality music compared in 4; a general music list creation unit 5 that creates a general music list from each music list; The music is played back by the tuner unit 6 for receiving radio such as FM and AM provided in the music playback device A, the CD / DVD playback unit 7 for playing back music CDs and music DVDs, and the CD / DVD playback unit 7. When Music for reproducing the music in the storage unit 8 to be pinged, the general music list created by the general music reproduction list creation unit 5, the reproduction in the CD / DVD reproduction unit 7, and the music stored in the storage unit 8 A playback unit 9, an amplifier 10 that amplifies the music output from the playback music unit 9, a speaker 11 that plays back and outputs the music amplified by the amplifier 10, and an on-vehicle music playback device A and a connected device The operation unit 12 is configured to be able to operate (a music playback device, a CD / DVD playback unit, a tuner unit, etc.).

  Here, the low sound quality music list creation unit 4a (sound quality selection means) compares whether the sound quality comparison unit 4 has high sound quality or low sound quality with respect to the duplicate music, and selects only low sound quality music. It is configured to be able to create a combined low-quality music list.

Next, the operation of the in-vehicle music playback device A1 configured as described above will be described in detail.
As shown in FIG. 8, when the music playback device B, the music playback device C, and the music playback device D are connected to the communication unit 2, the music list extraction unit 3 uses the music playback devices (B, C, D) to play music. The list is extracted, and the sound quality comparison unit 4 compares the sound quality with respect to the overlapping music in the extracted all music lists.

  At this time, as shown in FIG. 9A, only the low-quality music list is selected from the duplicated music by the sound quality comparison unit 4, and the low-quality music list creation unit 4a creates the low-quality music list. Then, as shown in FIG. 9B, a comprehensive music list is created together with the music that does not overlap with the high-quality music selected by the sound quality comparison unit 4.

  Then, the general music list created by the general music list creation unit 5 is set in the music reproduction unit 9 by freely setting, for example, reproduction based on the general music list, random reproduction, cueing reproduction, etc. 11 can be reproduced (output).

  The in-vehicle music playback device A1 of the present invention in the second embodiment configured as described above has the music list extraction unit 3 when the music playback device B to the music playback device D are connected to the in-vehicle music playback device A1. A music list is extracted from each music playback device, the sound quality is compared with respect to the duplicate music in the entire music list extracted by the sound quality comparison unit 4, and the low sound quality music list with only low sound quality is produced by the low sound quality music list creation unit 4a. And a comprehensive music list is created together with the music that does not overlap with the high-quality music compared by the sound quality comparison unit 4, and the music is reproduced using the music playback unit 9, amplifier 10, and speaker 11. Therefore, even if the music stored in the music playback devices B, C, and D connected to the in-vehicle music playback device A1 is duplicated, high-quality music is selected from the duplicated music. The Can-option to play.

(Third embodiment)
Next, a third embodiment will be described in detail with reference to the drawings. FIG. 10 is a block diagram showing the configuration of the in-vehicle music playback device in the third embodiment of the present invention. FIG. 11A is a comprehensive music list including the resource occupancy rate in the in-vehicle music playback device when playing back music, and FIG. 11B is the duplicated low music list created by the low-quality music list creation unit. It is a low sound quality music list also including the resource occupancy rate in the vehicle-mounted music playback device when playing music of sound quality. FIG. 12 is a comprehensive music list reconstructed by the restructuring unit. In addition, the same code | symbol is attached | subjected to the same location as 1st Embodiment or 2nd Embodiment, and detailed description is abbreviate | omitted.

As shown in FIG. 10, the on-vehicle music playback device A2 in the third embodiment includes a control unit 1 that controls the on-board music playback device A2, a resource management unit 1A that manages resources of the control unit 1, and a resource. When the management unit 1A determines that the resource shortage occurs, the general music list creation unit 5 reconstructs the list so as to resolve the resource shortage, and the communication unit 2 configured to be connectable to the outside. A music list extraction unit 3 that extracts a music list of a music playback device connected to the communication unit 2, and a sound quality comparison unit 4 that compares the sound quality of music duplicated in the music list extracted by the music list extraction unit 3 The low-quality music list creation unit 4a that creates a low-quality music list from the high-quality music and the low-quality music compared by the sound quality comparison unit 4, and the general music list that creates the general music list from each music list Creating section 5, tuner section 6 for receiving radio such as FM and AM provided in in-vehicle music playback apparatus A, CD / DVD playback section 7 for playing back music CDs and music DVDs, and CD / DVD playback Storage unit 8 that rips when music is played back by unit 7, playback of music in the total music list created by total music playback list creation unit 5, playback in CD / DVD playback unit 7, storage unit 8, a music playback unit 9 that plays back the music stored in 8, an amplifier 10 that amplifies the music output from the playback music unit 9, a speaker 11 that plays back and outputs the music amplified by the amplifier 10, and in-vehicle music playback The operation unit 12 is configured to operate the device A and to operate connected devices (music reproduction device, CD / DVD reproduction unit, tuner unit, etc.).

  Here, the resource management unit 1A monitors and manages the system resources of the in-vehicle music playback device A2, and when it is determined that there is a possibility that a shortage of system resources may occur when playing music. An instruction is sent to the reconstruction unit 1B to reconstruct the general music list.

  Further, when the reconfiguration unit 1B (reconstruction means) determines that there is a possibility that the resource management unit 1A may run out of system resources, the reconfiguration unit 1B replaces the general music list created by the general music reproduction list creation unit 5 Confirmation means for confirming whether or not the music is in the low sound quality music list created by the low sound quality music list creation section 4a, and when the alternative music in the general music list is in the low sound quality music list by the confirmation means, the low sound quality music list The determination unit determines whether or not the shortage of resources of the in-vehicle music playback device A2 can be resolved by switching to the alternative music.

Next, the operation of the in-vehicle music playback device A2 configured as described above will be described in detail.
When the music playback device B to the music playback device D are connected to the communication unit 2 of the car music playback device A2, the car music playback device A2 extracts the music list from each music playback device by the music list extraction unit 3, and the sound quality Comparison of sound quality is performed on the duplicate music in the entire music list extracted by the comparison unit 4, and a high-quality music is automatically selected from the duplicate music. The music can be reproduced based on the total music list by using the music reproducing unit 9, the amplifier 10, and the speaker 11.

  When the music management device 1A is playing a music piece and the resource management unit 1A determines that there is a possibility that the in-car music reproduction device A2 is short of resources, the general music piece shown in FIG. It is confirmed by the checking means of the reconstructing unit 1B whether or not the alternative music of the music in the list is in the low sound quality music list shown in FIG.

  At this time, the confirmation means searches for the alternative music in the general music list and the low sound quality music list. For example, the music numbers 103, 105, and 106 in the general music list in FIG. It is determined that the song is the same as the song number 3, song number 4, and song number 83 in the low sound quality song list shown in FIG.

  Then, the resource occupancy rates of the music number 103 in the general music list in FIG. 11A and the music number 3 in the low sound quality music list in FIG. 11B are compared, and the music numbers in the general music list in FIG. 105 and the resource occupancy rate of the music number 4 in the low-quality music list in FIG. 11B are compared, and the music number 106 in the general music list in FIG. 11A and the music in the low-quality music list in FIG. The determination unit of the reconstructing unit 1B determines whether the resource shortage of the in-vehicle music reproducing device A2 can be resolved by comparing the resource occupancy rates of No. 83 and reproducing the music in the low sound quality music list.

  Here, the resource occupation rate of the music number 103 in the general music list in FIG. 11A is 70, and the resource occupation rate of the music number 3 in the low sound quality music list in FIG. The resource occupancy rate of the song number 105 in the general music list in FIG. 11A is 70, and the resource occupancy rate of the music number 4 in the low sound quality music list in FIG. The resource occupancy rate of the song number 106 in the song list is 70, and the resource occupancy rate of the song number 83 in the low sound quality song list in FIG. 11B is 5, so that the music is switched to the music in the low sound quality song list and played back. By doing so, the resource occupancy rate of the in-vehicle music playback device A2 can be reduced.

  Then, the confirmation means confirms whether there is an alternative music in the low-quality music list that can lower the resource occupancy ratio for the music in the general music list, and if there is an alternative music, it is switched to the alternative music. As shown in FIG. 2, the reconstructing unit 1B reconstructs the comprehensive music list so that there is no shortage of resources even if the music is reproduced by the in-vehicle music reproducing device A2.

  The in-vehicle music reproducing device A2 of the present invention in the third embodiment configured as described above has the music list extracting unit 3 when the music reproducing device B to the music reproducing device D are connected to the in-vehicle music reproducing device A1. A music list is extracted from each music playback device, the sound quality is compared with respect to the duplicate music in the entire music list extracted by the sound quality comparison unit 4, and the low sound quality music list with only low sound quality is produced by the low sound quality music list creation unit 4a And a comprehensive music list is created together with the music that does not overlap with the high-quality music compared by the sound quality comparison unit 4, and the music is reproduced using the music playback unit 9, amplifier 10, and speaker 11. When the resource management unit 1A determines that there is a possibility that the in-vehicle music playback device A2 will run out of resources due to playback of the music during playback based on the Check if the music is in the low sound quality music list, and if there is the same music and switching, the shortage of resources will be resolved, and the comprehensive music list can be rebuilt by the rebuilding unit 1B. The reproducing apparatus A2 can reproduce the music stably without causing resource shortage.

  The first to third embodiments of the present invention have been described above. However, the present invention is not limited, and the same effect can be obtained even if various changes are made.

  The in-vehicle music playback device A (A1, A2) of the present invention may be provided with a display means for displaying a comprehensive music list so that the music is selected and played when the music is played. The display means is not particularly limited, and a liquid crystal display, an organic EL display, an LED display, a plasma display, or the like can be used.

  Further, as shown in FIG. 13 (a), the in-vehicle music reproducing apparatus A (A1, A2) shown in the first to third embodiments includes a route guide unit 13 and has a navigation function. It is good also as in-vehicle music reproducing device A (A1, A2). The route guidance unit 13 is a well-known navigation function that can detect the position of the vehicle such as GPS and set the destination from the current position to perform route guidance, and is particularly limited. Not.

  In particular, the in-car music playback device A (A1, A2) has a navigation function, so that music can be played while performing route guidance and there is a risk that playing music will cause a shortage of resources. Even when the total music list is reconstructed so as not to cause a shortage of resources, the music can be played without affecting the navigation function.

Further, as shown in FIG. 13B, a route guidance device 13a provided outside is connected to the on-vehicle music playback device A (A1, A2) shown in the first to third embodiments. You may comprise. The route guidance device 13a is a known navigation device, and is not particularly limited. The route guidance device 13a displays a comprehensive music list on a screen for displaying a map or a guidance route provided in the navigation device, or from the screen. Even if it is configured to operate the on-vehicle music playback device A (A1, A2), the same effect can be obtained.

  In particular, when there is a risk of resource shortage due to re-search processing (re-route search) or the like when the route is deviated during route guidance, the in-vehicle music playback device A (A1, A2) of the present invention is comprehensive. Since the playlist is reconstructed, it can be used without affecting the re-search procedure and the navigation function.

  As described above, the in-vehicle music playback device according to the present invention can play back music that each music playback device has in an integrated manner without duplication even if a plurality of music playback devices are connected. At the same time, when there is a possibility that a system resource shortage will always occur, it is useful as an in-vehicle music playback device or the like that can always reproduce music in a stable state because the general playlist is reconstructed to prevent resource shortage.

The block diagram which shows the structure of the vehicle-mounted music reproduction apparatus in the 1st Embodiment of this invention. (A) Schematic diagram showing the configuration of an example of a music playback device (b) Schematic diagram showing the configuration of an example of a music playback device Schematic showing a state in which each music playback device is connected to the in-vehicle music playback device (A) Schematic diagram showing objects to be extracted by the music list extraction unit (b) to (e) A diagram showing a music list for each music playback device extracted by the music list extraction unit (A) The figure which shows all the music lists which the music list extraction part extracted (b) The figure which shows the duplication list which extracted the duplication music in the music list of FIG. 5 (a) The figure which shows the comprehensive music list which is created with the music playback device for car use The block diagram which shows the structure of the vehicle-mounted music reproduction apparatus in the 2nd Embodiment of this invention. The block diagram which shows the state which connected each music reproduction apparatus to 2nd Embodiment. (A) The figure which shows the low sound quality music list of the overlapping music produced in the low sound quality music list creation part (b) The figure which shows the comprehensive music list in 2nd Embodiment The block diagram which shows the structure of the vehicle-mounted music reproduction apparatus in the 3rd Embodiment of this invention. (A) The figure which shows the synthetic | combination music list also including the resource occupancy rate in the vehicle-mounted music reproduction apparatus at the time of reproducing | regenerating a music (b) When reproducing the music of the overlapping low sound quality produced in the low sound quality music list creation part The figure which shows the low sound quality music list which also includes the resource occupation rate in the car music playback device The figure which shows the comprehensive music list reconstructed by the reconstruction part (A) Block diagram provided with a route guide unit inside the in-vehicle music playback device shown in the first to third embodiments (b) Shown in the first to third embodiments Block diagram showing a configuration in which a route planning device is connected to the outside of an in-vehicle music playback device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control part 1b Control part 1c Control part 1d Control part 1A Resource management part 1B Reconstruction part 2 Communication part 2b Communication part 2c Communication part 2d Communication part 3 Music list extraction part 4 Sound quality comparison part 4a Low sound quality music list creation part 5 Comprehensive Music list creation unit 6 Tuner unit 7 DVD / CD reading unit 8 Storage unit 8b Storage unit 8c Storage unit 8d DVD / CD reading unit 9 Music playback unit 9b Music playback unit 9c Music playback unit 9d Music playback unit 10 Amplifier 11 Speaker 12 Operation Unit 13 route guidance unit 13a route guidance device A in-vehicle music playback device A1 in-vehicle music playback device A2 in-vehicle music playback device B music playback device C music playback device D music playback device

Claims (6)

In an in-vehicle music playback device that is configured to be connectable to at least two or more music playback devices and that reads and plays back music stored in the music playback device,
Music list extraction means for extracting a list of music stored in the music playback device;
Sound quality comparison means for comparing the sound quality of duplicate music in each music list extracted by the music list extraction means;
Comprehensive music list creation means for creating a general music list by integrating the high-quality music compared by the sound quality comparison means and the music excluding duplicate music from each music list,
An in-vehicle music playback device that plays back the music based on the comprehensive music list.   2. The on-vehicle music playback device includes sound quality selection means for selecting high-quality music and low-quality music when the sound quality of the music pieces duplicated by the sound quality comparison means is compared. The in-vehicle music playback device described in 1.   The in-vehicle music reproducing apparatus according to claim 2, wherein the sound quality selecting means includes low sound quality music list creation means for creating a low sound quality music list. The in-vehicle music playback device includes resource management means for managing system resources during the music playback,
The in-vehicle music reproduction according to any one of claims 1 to 3, further comprising a reconstructing unit that reconstructs the comprehensive music list when the resource management unit determines that the resource is insufficient. apparatus. The reconstructing means confirms whether the alternative music of the comprehensive music list is in the low-quality music list when the resource management means detects a shortage of system resources;
Determination means for determining whether or not the resource shortage can be resolved by changing to the alternative music confirmed by the confirmation means;
5. The in-vehicle reproduction control apparatus according to claim 4, wherein when the determination unit determines that the resource shortage is resolved, the substitute music piece is switched.   6. The in-vehicle music playback device includes route guidance means for setting a destination and performing route guidance from a current position to the destination. In-car music player.

Images