JP2009266265A - On-vehicle device provided with reproduction function of music file having hierarchical structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle machine enabling a user to instruct reproduction of a file such as a music file even in a situation where the user is unable to closely observe the screen of the on-vehicle machine. <P>SOLUTION: An on-vehicle device is provided with a display monitor for displaying an image, a music selection means for performing control so that displaying of a music file group in order of hierarchy on the display monitor enables selection of a desired music file when a predetermined operation is performed during a vehicle stop, and a music playing control means for inhibiting, when the predetermined operation is performed during vehicle running, the selection control of the music selection means to start reproduction of the music file group. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to reproduction of a file such as a music file in an in-vehicle device, and more particularly to reproduction of a file group having a hierarchical structure.

  The operation of selecting a music file group having a hierarchical structure in the in-vehicle device is to display a selection menu screen for each layer of the hierarchical structure, and by selecting the category in order from the upper layer to the user, to the final target music file Generally, it is performed by the procedure of reaching.

Patent Document 1 describes that search conditions are assigned to a key group in order to reduce the burden of an operation of selecting a desired music from a large number of music.
JP-A-2004-281013

  By the way, it is desired to configure an in-vehicle device so that a video file cannot be reproduced and a driver cannot perform a music selection operation or the like from the viewpoint of safety while the vehicle is running. For example, assume that a video file as shown in FIG. In this case, when the vehicle starts to travel, the operation mode is switched to still image display as shown in FIG. In the playback screen of FIG. 2, video playback is prohibited, a still image is displayed, and a message “please enjoy only audio while driving” is displayed. In this case, the video file selection operation is prohibited.

  However, as described above, in a configuration in which washing operations such as video files are uniformly prohibited during driving, the driver can perform a selection operation only when the vehicle is stopped, and improvement in operability is desired. It will be.

  The present invention has been made in view of the above problems. That is, an object of the present invention is to provide an in-vehicle device capable of instructing reproduction of a file such as a music file even in a situation where a user cannot watch the screen of the in-vehicle device.

  In order to achieve the above object, according to one aspect of the present invention, a display monitor that displays an image, and a music file group in a hierarchy when a predetermined operation is performed while the vehicle is stopped are displayed on the display monitor. The music selection means for controlling the music file to be selected by displaying the music selection means, and when the predetermined operation is performed while the vehicle is running, the music selection means prohibits the music selection control and An in-vehicle device is provided that includes music playback control means for starting playback of a music file group.

  According to such a configuration, it is possible to switch to the reproduction of the music file while traveling without going through the steps of following the hierarchy with a simple operation.

  The predetermined operation may be a pressing operation on a predetermined button displayed on the display monitor.

  The in-vehicle device may be configured to further include an external interface. In this case, the music file group is a music file group stored in a portable audio device connected to the external interface. The music selection means performs the control by performing data communication with the portable audio device via an external interface, and the music reproduction control means performs the data communication with the portable audio device via an external interface. Perform playback.

  The music reproduction control means may be configured to reproduce the music file group in order from the top.

  The music reproduction control means may be configured to reproduce a music file group according to a music list stored in predetermined music list data.

  The music reproduction control means may be configured to randomly reproduce the music file group.

  The music reproduction control means may be configured to display a predetermined music reproduction screen together with reproduction of the music file group.

  The predetermined music playback screen may be configured to display a list of music titles to be played back.

  An operation button for feeding music may be further provided on the predetermined music playback screen.

  According to the present invention, it is possible to switch to the reproduction of a music file while traveling without going through the steps of following the hierarchy with a simple operation. That is, in a situation where the user cannot pay attention to the screen, the music file can be reproduced without burdening the user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 6 is a block diagram showing the configuration of the navigation system 1 as an embodiment of the present invention. As shown in FIG. 6, the navigation system 1 includes a control unit 4, an absolute position / direction detection unit 12, a relative direction detection unit 13, and a vehicle speed detection unit 14. These detection units 12, 13, and 14 are connected to the control unit 4, and provide various types of information such as the absolute value position of the vehicle to the control unit 4. The navigation system 1 further includes a ROM 5, a DRAM 6, an SRAM 7, a user interface unit 9, a display unit 10, an input unit 11, and a disk control unit 15.

  Note that the navigation system 1 has an external device interface such as a USB and can be connected to a portable audio device such as iPod (registered trademark). When a portable audio device is connected, the control unit 4 can start playback of a hierarchical music file or the like in the portable audio device, provide a menu screen for performing a music selection operation, or the like. . Details will be described later.

  The absolute position / orientation detection unit 12 receives a signal from a GPS satellite via an antenna, performs GPS positioning based on the received signal, and calculates the current position and direction of the vehicle. The relative azimuth detecting unit 13 detects the relative azimuth of the vehicle based on the output of an azimuth detection sensor such as a gyro sensor. The vehicle speed detector 14 detects the current speed of the vehicle based on the vehicle speed pulse provided from the vehicle side. Whether the vehicle is running or stopped can be determined based on, for example, vehicle speed pulses.

  The controller 4 has a CPU and its peripheral circuits in detail, and is a part that controls the entire system in order to realize various functions as a navigation system according to various programs stored in the ROM 5 or the like. The ROM 5 stores a BIOS and a boot program, and is accessed from the control unit 4 when the navigation system 1 is activated. The DRAM 6 is used as a work memory for the CPU in the control unit 4. The SRAM 7 holds various setting data and the like.

  The display unit 10 is composed of a liquid crystal panel, for example, and various types of information such as a map and an operation menu are displayed on the display unit 10 under the control of the control unit 4. The input unit 11 includes a remote controller and a touch panel, and is used by a user to input various information and commands to the navigation system 1. The user interface unit 9 functions as an interface that connects the display unit 10, the input unit 11, and the control unit 4. Specifically, the user interface unit 9 includes an I / O control circuit, a driver circuit, and the like.

  The disk control unit 15 is a part that stores map data and the like. As the storage device, a disk device such as a CD-ROM, a DVD-ROM, a hard disk, or an SSD (Solid State Drive) can be used.

  Next, the music selection operation when the vehicle is stopped will be described with reference to FIG. FIG. 3A shows a state in which a video file is being reproduced on the display unit 10 when the vehicle is stopped. Further, it is assumed that a portable audio device is connected to the navigation system 1. As shown in FIG. 3A, the video file playback screen is provided with a music playback instruction button 21 for instructing playback of music. This music reproduction instruction button 21 is displayed as “music” in FIG.

  When the music playback instruction button 21 is pressed on the video display screen of FIG. 3A, the control unit 4 presents a menu screen for selecting a hierarchically structured music file in the portable audio device following the hierarchy. . Specifically, first, a menu screen of category items obtained by categorizing music is presented (see FIG. 3B). The user performs category selection via the screen of FIG. In the screen shown in FIG. 3B, the display content can be scrolled by operating a predetermined button.

  If category selection is performed via the menu screen of FIG.3 (b), the control part 4 will display the music file contained in the selected category (refer FIG.3 (c)). The user can scroll the display contents by operating a predetermined button. When the user selects a desired music piece on the menu screen of FIG. 3C, the control unit 4 displays the music reproduction screen shown in FIG. 3D on the display unit 10 and also plays the selected music piece. Start.

  In the music playback screen shown in FIG. 3D, the name of the music being played is displayed in a box at the lower left of the screen. The names of songs to be played back thereafter are displayed in boxes arranged in the clockwise order on the screen in the order of playback. In addition, operation buttons 31 and 32 for performing a track up / down operation are presented at the center of the music playback screen. When the user performs a touch panel operation on the button 31 or 32 on the music reproduction screen, track up / down can be performed.

  Next, the music reproduction operation during traveling will be described with reference to FIG. Also in this case, it is assumed that a portable audio device is connected to the navigation system 1. If it is determined that the vehicle has started running during playback of the video file, the control unit 4 stops playback of the video and switches to playback of only audio. At this time, the control unit 4 displays a still image on the display unit 10 (FIG. 4A). As in the case of FIG. 3A, a music reproduction instruction button 21 is provided for this still image. As in the case of FIG. 3A, the music reproduction instruction button 21 is displayed as “music” in FIG.

  When the music playback instruction button 21 is pressed during traveling, the control unit 4 displays the music playback screen shown in FIG. 4B on the display unit 10 and starts playback of the music in the portable audio device. To do. The music reproduction may be started when the control unit 4 transmits a predetermined command to the portable audio device when the music reproduction instruction button 21 is pressed. This music reproduction screen has the same configuration as the screen described with reference to FIG.

  Note that the music file playback procedure when the music playback instruction button 21 is pressed includes a method of playing the music file in the portable audio device in order from the beginning, or a random playback of the music file in the portable audio device. There are various ways to do this. There may be a method of reproducing based on a list file created in advance by a user and storing the names of favorite music file groups. The control unit 4 can send various commands related to music playback to the portable audio device via the external interface.

  The music playback screen shown in FIGS. 3D and 4B will be further described. As described above, the operation buttons 31 and 32 for feeding music are provided at the center of the music playback screen. By operating this operation button 31 or 32, it is possible to switch to file reproduction immediately before or after the music file being reproduced. FIG. 5A to FIG. 5C are schematic diagrams of music title display on the music playback screen. For example, as shown in FIG. 5A, it is assumed that six music files are displayed clockwise from the music file 001 being reproduced. In this state, when a music feed operation is performed via the operation buttons 31 and 32, the music file 002 starts to be reproduced, and music files 002 to 007 are displayed in order on the screen in a clockwise direction (FIG. 5 (b)). In addition, if the music feeding operation is performed in this state, the reproduction of the music file 003 is started and the music files 003 to 008 are sequentially displayed on the screen in the clockwise direction (FIG. 5C).

  On the music playback screen, for example, the operation buttons 31 and 32 may function as forward feed, the operation button 32 may function as reverse feed, or both the operation buttons 31 and 32 may function as forward feed.

  In the music playback screen, the interval between the operation button 31 and the operation button 32 corresponds to the interval between the index finger and the middle finger of a human hand. This configuration enables the user to perform a music feed operation without paying attention to the screen.

  FIG. 7 is a flowchart showing the above-described series of operations from triggering the music playback instruction button 21 to music playback. The operation of FIG. 7 is executed under the control of the control unit 4. As shown in FIG. 7, when the music reproduction instruction button 21 is pressed (step S101), the control unit 4 changes the operation according to whether or not the vehicle is running (step S102). That is, when the vehicle is running (S102: YES), the music reproduction screen is displayed and the reproduction of the music is started (step S103). On the other hand, when the vehicle is stopped (S102: NO), the hierarchical menu screen is displayed and music selection according to the procedure of following the hierarchy is accepted (step S104). When music is selected through step S104, a music playback screen is displayed and music playback is started (S103). The above-described series of operations can also be regarded as an operation in which the control unit 4 prohibits music selection according to the procedure of following the hierarchy while traveling.

  The above is the embodiment of the present invention. According to this embodiment, it is possible to switch to playback of a music file without going through the steps following the hierarchy by a simple operation of pressing the music playback instruction button 21 during traveling. That is, in a situation where the user cannot pay attention to the screen, the music file can be reproduced without burdening the user.

  In particular, since the button for starting music selection while the vehicle is stopped and the button for starting music reproduction while traveling are the same, a user's sensuous operation is facilitated.

  Various modifications can be made to the above-described embodiment. For example, in the above-described embodiment, it has been described that the music can be fed by the operation buttons 31 and 32 on the music playback screen during travel (see FIG. 4B). There may be a configuration for prohibiting the operation according to. Even in this case, the effect that the reproduction of the music file can be started by an easy operation of pressing the music reproduction instruction button 21 while traveling can be achieved.

  Although the above-described embodiment has been related to the reproduction of a music file, the file to be played while running can have various types of files related to sound.

FIG. 1 is a diagram showing an example of a video playback screen while the vehicle is stopped. FIG. 2 shows an example of a display screen when traveling is started from the video playback state. FIG. 3 is a diagram illustrating a procedure of music selection operation when the vehicle is stopped. FIG. 4 is a diagram illustrating a music playback operation during traveling. FIG. 5 is a diagram illustrating a music feed operation on the music playback screen. FIG. 6 is a block diagram showing the configuration of the navigation system. It is a flowchart showing operation control of music reproduction.

Explanation of symbols

1 Navigation system 5 ROM
6 DRAM
7 SRAM
9 User interface unit 10 Display unit 11 Input unit 12 Absolute position / orientation detection unit 13 Relative direction detection unit 14 Vehicle speed detection unit 15 Disc control unit 21 Music playback instruction buttons 31 and 32 Operation buttons

Claims (9)

A display monitor for displaying images;
Music selection means for controlling to enable music selection of a desired music file by displaying a music file group on the display monitor following a hierarchy when a predetermined operation is performed while the vehicle is stopped;
Music reproduction control means for prohibiting control of music selection by the music selection means and starting reproduction of the music file group when the predetermined operation is performed while the vehicle is running;
A vehicle-mounted device comprising:   The in-vehicle device according to claim 1, wherein the predetermined operation is a pressing operation on a predetermined button displayed on the display monitor. An external interface,
The music file group is a music file group stored in a portable audio device connected to the external interface,
The music selection means performs the control by performing data communication with the portable audio device via the external interface,
The in-vehicle apparatus according to claim 1, wherein the music reproduction control unit performs the reproduction by performing data communication with the portable audio device via the external interface.   The in-vehicle apparatus according to any one of claims 1 to 3, wherein the music reproduction control unit reproduces the music file group in order from the top.   The in-vehicle apparatus according to any one of claims 1 to 3, wherein the music reproduction control means reproduces the music file group according to a music list stored in predetermined music list data.   The in-vehicle device according to any one of claims 1 to 3, wherein the music reproduction control means reproduces the music file group at random.   The in-vehicle apparatus according to claim 1, wherein the music reproduction control unit displays a predetermined music reproduction screen together with reproduction of the music file group.   8. The in-vehicle apparatus according to claim 7, wherein the predetermined music playback screen displays a list of music titles to be played back. The in-vehicle device according to claim 7 or 8, wherein the predetermined music playback screen is further provided with an operation button for feeding music.

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