JP2007041821A - Musical composition reproducing device and musical composition reproducing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a musical composition reproducing device which simply retrieves musical composition data by moving a musical composition selecting cursor for retrieving musical composition data deployed on a musical composition map in a direction which a user intends to move the cursor, and also provide a musical composition data reproducing system. <P>SOLUTION: A tilt angle detecting part 6 detects a tilt of a device and outputs a posture signal. A cursor-controlling part 13 moves a musical composition selecting cursor, based on the posture signal, in a direction in which a musical composition reproducing device 1 tilts, selects musical composition data located in the musical composition selecting cursor, and executes the reproduction of the selected musical composition data. Thus, the musical composition selecting cursor for retrieving musical composition data deployed on a musical composition map is moved in a direction in which a user intends to move the cursor only by tilting the musical composition reproducing device 1 in the direction in which the user wants to move the musical composition selecting cursor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a music playback device and music playback system for playing back music data recorded on a recording medium (HDD, CD, MD, etc.), and in particular, a music playback device that can be easily operated by holding the device with one hand. And a music playback system.

  A portable terminal device that reproduces music data recorded on a recording medium (HDD, CD, MD, etc.) needs to perform various operations as the device becomes multifunctional. On-screen operation using a display is adopted. In on-screen operation, it is common to select multiple instruction keys arranged on the operation screen displayed on the display by operating operation means such as the up / down key, cross key, jog shuttle, It is difficult for an elderly person or an unfamiliar user to smoothly perform operations such as up / down key, cross key, and jok shuttle.

  Therefore, without using operation means such as up / down key, cross key, jok shuttle, etc., the tilt angle of the device is detected from the signal obtained from the acceleration sensor, and the instruction key on the operation screen is based on the tilt angle of the device. Has been proposed in which an instruction key displayed near the center of an operation screen is selected (for example, see Patent Document 1).

However, in the prior art, the instruction key on the operation screen is moved up, down, left, and right by tilting the apparatus in the front / rear / left / right direction, and used to select a plurality of music data developed on the music map. When performing movement control of the music selection cursor, the music selection cursor can only be moved up, down, left, and right, so that the device is tilted in the front-rear direction to move the music selection cursor to the desired area, Therefore, there is a problem in that the operation becomes complicated.
JP 2003-162371 A

  The present invention has been made in view of such problems, and an object of the present invention is to move a music selection cursor for searching music data developed on the music map screen in a direction intended by the user. The present invention is to provide a music playback device and a music playback system that can be easily searched for music data.

In order to solve the above problems, the present invention has the following configuration.
The music playback device of the present invention displays a music map screen on which a music map in which a plurality of music data is expanded is displayed on a display means, and the music data selected by a music selection cursor indicating an area on the music map Is a music playback device that detects the tilt of the device and outputs a posture signal, and the device is inclined in the direction in which the device is tilted based on the posture signal from the tilt angle detection device. A cursor control means for moving the music selection cursor and selecting the music data located in the music selection cursor; and a central control means for executing reproduction of the music data selected by the cursor control means. It is characterized by.

  Furthermore, in the music playback device of the present invention, a guide information display area in which the bibliographic data of the music data is displayed is laid out on the music map screen, and the bibliographic data of the music data is stored; And bibliographic data of the music data selected by the cursor control means, and display control means for displaying the bibliographic data from the database and displaying it in the guidance information display area.

Further, in the music reproducing device of the present invention, the X-axis and Y-axis rotation angles that are parallel to the main surface portion and orthogonal to each other based on the posture signal from the tilt angle detection means are defined as the X-axis rotation angle and the Y-axis rotation angle. A rotation angle calculating means for calculating each of the calculated X-axis rotation angle and the Y-axis rotation angle to calculate a posture vector indicating the direction of inclination;
The cursor control means moves the music selection cursor in the direction of the posture vector calculated by the rotation angle calculation means.

  Furthermore, the music playback device of the present invention, cell information storage means for storing cell information consisting of a plurality of cells divided corresponding to the length of the posture vector calculated by the rotation angle calculation means, Conversion table storage means for storing a conversion table that associates each cell of the cell information stored in the cell information storage means with a speed, and the cursor control means is calculated by the rotation angle calculation means. One cell of the cell information is specified as a current cell based on the posture vector, and the music selection cursor is moved at a speed associated with the current cell using the conversion table. .

  The music playback system of the present invention includes a main body device and a remote control device for operating the main body device, and displays a music map screen on which a music map in which a plurality of music data is expanded is displayed. A music playback system that selects music data by a music selection cursor indicating an area on a map, wherein the remote control device detects an inclination of the remote control device and outputs an attitude signal, and the music An operation key for instructing reproduction of the music data selected by the selection cursor; and a transmission unit for transmitting the posture signal output from the inclination angle detection unit and a pressing signal for the operation key. The apparatus includes a receiving unit that receives the posture signal and the press signal, a display unit that displays the music map screen, and a receiving unit. Cursor control means for moving the music selection cursor in a direction in which the remote control device is tilted based on the attitude signal received in this manner, and selecting the music data located in the music selection cursor; Central control means for executing reproduction of the music data selected by the music selection cursor based on a pressing signal of the operation key received by the means.

  The music playback device and the music playback system of the present invention detect the tilt of the device by the tilt angle detection means and output a posture signal, move the music selection cursor in the direction in which the device is tilted based on the posture signal, By selecting the music data located in the music selection cursor and playing the selected music data, it is displayed on the music map screen just by tilting the device in the direction you want to move the music selection cursor. The music selection cursor for searching the music data that has been searched can be moved in the direction intended by the user, and the music data can be easily searched.

  Furthermore, the music playback device and the music playback system of the present invention are configured to read and display bibliographic data of music data located in the music selection cursor from the database in the guidance information display area laid out on the music map screen. By doing so, the music data located in the music selection cursor can be easily confirmed, and the desired music data can be easily selected.

  Furthermore, the music playback device and the music playback system according to the present invention convert the rotation angles of the X-axis and the Y-axis that are parallel to the main surface portion and orthogonal to each other based on the attitude signal by the rotation angle calculation means to the X-axis rotation angle and Y-axis rotation angle And calculating a posture vector indicating in which direction it is tilted by combining the calculated X-axis rotation angle and Y-axis rotation angle, and moving the music selection cursor in the direction of the calculated posture vector By configuring as above, there is an effect that the moving direction of the music selection cursor can be easily determined.

  Furthermore, the music playback device and the music playback system of the present invention store cell information composed of a plurality of cells divided according to the length of the attitude vector in the cell information storage means, and in the conversion table storage means. A conversion table that associates each cell of the cell information with the speed is stored, and one cell of the cell information is specified as the current cell based on the attitude vector, and at the speed associated with the current cell using the conversion table. By configuring the music selection cursor to move, it is possible to reduce the amount of processing necessary for calculating the speed according to the inclination of the apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an external configuration of an embodiment of a music playback device according to the present invention, FIG. 2 is a block diagram showing a configuration of the music playback device shown in FIG. 1, and FIG. FIG. 4 is a diagram illustrating an output example of the inclination angle detection unit illustrated in FIG. 2, and FIG. 5 is a coordinate conversion illustrated in FIG. 2. FIG. 6 is a diagram illustrating an example of cell information stored in the cell information storage unit illustrated in FIG. 2, and FIG. 7 is a diagram illustrating the conversion illustrated in FIG. FIG. 8 is a diagram showing an example of a conversion table stored in the table storage unit, FIG. 8 is a diagram showing an example of a music map screen stored in the screen storage unit shown in FIG. 2, and FIG. It is a figure which shows the example of a keyboard layout screen memorize | stored in the screen memory | storage part shown.

  A music reproducing device 1 according to the present embodiment is a portable terminal device such as an HDD player that reproduces music data recorded on an HDD, which is a recording medium. Referring to FIG. 2 is provided with an operation key 4 on the right side surface of the housing 2, and in the housing 2, referring to FIG. Unit 7, coordinate conversion unit 8, cell information storage unit 9, conversion table storage unit 10, screen storage unit 11, display control unit 12, cursor control unit 13, central control unit 14, and database 15 And an audio output unit 16.

  The display unit 3 is a display means such as a liquid crystal display (LCD), and various guidance information such as title data, bibliographic data such as artist names, reproduction time, etc., operation selection, volume adjustment, music Various operation screens on which various instruction keys such as data search and music data reproduction instructions and a music map for searching music data are laid out are displayed. In the present embodiment, the guide information, the instruction key, and the music map are configured to be displayed on the same screen on the display unit 3, but other parts such as a liquid crystal display (LCD) are provided on the main surface of the music playback device 1. Display means may be provided, and any one of the guide information, the instruction key, and the music map may be displayed on a separate display means.

  The operation key 4 functions as a power key for instructing power on / off, an execution key for instructing execution of a function (instruction key) selected by the user, and an execution key for instructing reproduction of music data selected by the user. The operation key 4 grips the music reproducing device 1 with the right hand with the upper side of the right side surface of the housing 2, that is, as shown in FIG. 3, the main surface on which the display unit 3 is provided. In a state, it is arranged at a position where it can be operated with the thumb.

  The inclination angle detection unit 6 is an inclination sensor using an acceleration sensor such as a capacitance type, a piezoresistive type, or a heat distribution detection type. For example, referring to FIG. 1, the main surface portion, that is, the display surface of the display portion 3. Attitude signals corresponding to the inclinations of the X axis and the Y axis that are parallel to each other and orthogonal to each other, and the Z axis that is perpendicular to the main surface portion are output to the AD converter 7. In the present embodiment, the X axis is set in the vertical direction of the display unit 3, and the Y axis is set in the horizontal direction of the display unit 3.

  As the tilt angle detector 6, a fixed beam and a movable beam (beam) are regarded as electrode plates of capacitors, respectively, and variation in the distance between the beams is set as an electrostatic capacitance value in the X axis, Y axis, When a capacitance type triaxial acceleration sensor that detects the inclination of the Z axis (the axis perpendicular to the main surface portion as shown in FIG. 1 is used as the Z axis) is used, as shown in FIG. , An output voltage corresponding to the tilt angle of the Y axis and the Z axis is obtained as an attitude signal.

The AD conversion unit 7 converts the posture signal output from the tilt angle detection unit 6 into a digital signal and outputs the digital signal to the coordinate conversion unit 8. The coordinate conversion unit 8 uses the X-axis and Y-axis based on the input posture signal. The respective rotation angles θ _x and θ _y of the music reproducing device 1 centering on the axes are calculated. The rotation angle θ _x can be obtained from the inclination angles of the Y axis and the Z axis, and the rotation angle θ _y can be obtained from the inclination angles of the X axis and the Z axis. Hereinafter, rotation of the music reproducing device 1 around the X axis is referred to as rotation in the pitch direction, and rotation of the music reproducing device 1 around the Y axis is referred to as rotation in the roll direction. Further, the rotation angles θ _x and θ _y in the case where the main surface portion of the housing 2 is orthogonal to the direction of gravity are set to 0 degrees, and the rotation in the pitch direction for moving the display unit 3 upward is added to the plus. Rotation in the pitch direction for moving the lower part of the display unit to the lower side is negative, rotation in the roll direction for moving the right side of the display unit 3 to the lower side is positive, and rotation in the roll direction to move the left side of the display unit to the lower side Rotation is negative. In addition, the coordinate conversion unit 8 combines the calculated rotation angles θ _x and θ _y , and as shown in FIG. 5, the angle θ _a indicating in which direction the music playback device 1 is tilted and the music playback A posture vector R represented by a length r indicating the magnitude of the tilt angle of the apparatus 1 is calculated and output to the cursor control unit 13.

  The cell information storage unit 9 is a storage unit that stores cell information including a plurality of cells (regions). The cell information is composed of a plurality of cells divided based on the length r of the attitude vector R calculated by the AD conversion unit 7, and is configured so that one cell can be specified as the current cell based on the attitude vector R. Has been. The number of cells in the cell information is arbitrary, and FIG. 6 shows cell information including three cells Sn (n = 0, 1, 2) divided according to the length r. .

  The conversion table storage unit 10 is a storage unit that stores a conversion table that associates each cell of the cell information stored in the cell information storage unit 9 with the movement amount and speed of the key selection cursor and the music selection cursor. In FIG. 7, the movement amount Ln (n = 0, 1, 2) and the speed An (n = 0, 1, 2) are associated with the three cells Sn of the cell information shown in FIG. Note that the movement amount L0 and the speed A0 associated with the innermost cell S0 of the cell information are “0”, the music reproducing device 1 is kept substantially horizontal, and the innermost cell of the cell information by the attitude vector R. When S0 is specified as the current cell, control is performed so that the key selection cursor and the music selection cursor are not moved. Furthermore, the longer the posture vector R, that is, the greater the inclination of the apparatus, the larger the moving amount and the faster the speed, and the moving amount Ln has a relationship of L0 <L1 <L2, and the speed An is , A0 <A1 <A2. The movement amount Ln indicates the movement amount of the key selection cursor and the music selection cursor per unit time, and is synonymous with the speed An.

  The screen storage unit 11 stores a guide information display area in which various guide information is displayed, a plurality of instruction keys to which different operations are assigned, and a plurality of operation screens on which a music map for searching music data is laid out. The storage unit stores a screen for performing operations related to the reproduction of music data, a screen for adjusting volume, a screen for searching for music data, and the like. In addition, as a screen on which the music map is laid out, as shown in FIG. 8, the music data stored in the database 15 is based on two evaluation items (for example, “gentle-violent”, “bright-dark”). A music map screen 32 in which a music map 31 developed on a plane and a selection data reference area 37, which is a guide information display area in which bibliographic data of music data is displayed, is stored in the screen storage unit 11. It shall be. As a screen on which a plurality of instruction keys are laid out, as shown in FIG. 9, a key arrangement screen 34 on which a plurality of instruction keys Km (m = 1 to 25) to which different operations are assigned is arranged. It is assumed that it is stored in the storage unit 11.

  The display control unit 12 reads out any one of various operation screens stored in the screen storage unit 11 based on the control of the central control unit 14, displays the operation screen on the display unit 3, and displays the operation screen displayed on the display unit 3. The cursor control unit 13 is notified of operation screen specifying information for specifying. When the display control unit 12 displays the music map screen 32 on the display unit 3, the music map laid out on the music map screen 32 based on the evaluation points of the music data stored in the database 15. Each musical composition data is developed as a figure such as a point 31. Further, the display control unit 12 displays the title name, artist name, etc. of the music data to be reproduced in the guidance information display area laid out on the operation screen displayed on the display unit 3 based on the instruction from the central control unit 14. Bibliographic data is read from the database 15 and displayed in the guidance information display area.

  The cursor control unit 13 moves the music selection cursor 33 indicating an area on the music map screen 32 displayed on the display unit 3 and a plurality of instruction keys Km arranged on the key arrangement screen 34 displayed on the display unit 3. This is a means for controlling the movement of the key selection cursor 35 for selecting any of the above. The cursor control unit 13 specifies a cell (hereinafter referred to as a current cell) corresponding to the attitude vector R input from the coordinate conversion unit 8 based on the cell information stored in the cell information storage unit 9, and The movement amount and speed associated with the current cell specified using the conversion table are specified, and the music selection cursor 33 and the key selection cursor 35 are moved with the movement amount and speed specified in the direction of the posture vector R. Although the music selection cursor 33 shown in FIG. 8 is circular, the shape and size of the music selection cursor 33 are arbitrary and may be selected by the user.

  When the operation key 4 is pressed, the cursor control unit 13 notifies the central control unit 14 of the music data included in the music selection cursor 33 on the music map screen 32 and on the key arrangement screen 34. The central control unit 14 is notified of the operation assigned to the instruction key Km where the key selection cursor 35 is located. FIG. 9 shows a state in which the instruction key K23 is selected by the key selection cursor 35 and the key selection cursor 35 is displayed as a point. However, the key selection cursor 35 is not displayed. May be.

  The central control unit 14 controls the audio output unit 16 to reproduce the music data notified from the cursor control unit 13, and performs an operation notified from the cursor control unit 13 with the display control unit 12 and the audio. This is executed by controlling the output unit 16. The central control unit 14 performs power-on control when the operation key 4 is pressed in the power-off state, and performs power-off control when the operation key 4 is pressed for a predetermined time or more in the power-on state. Note that the power-off control is executed by providing an instruction key assigned with a power-off operation on any of the operation screens and pressing the operation key 4 with the cursor moved to the instruction key. May be.

  The database 15 is an HDD that is a recording medium. The database 15 stores music data input from a music data input terminal (not shown), bibliographic data such as the title name and artist name of each music data, and at least two evaluations. An evaluation score obtained by evaluating the music data for each item is recorded.

  The audio output unit 16 is an audio player that reproduces music data recorded in the database 15 based on an instruction from the central control unit 14, and outputs an audio signal from an audio output terminal (not shown) such as a headphone that is not shown. Output to the device.

Next, the movement operation of the music selection cursor 33 in the music map 31 where music data is developed on a plane based on two evaluation items will be described in detail with reference to FIG.
FIG. 10 is a flowchart for explaining the movement operation of the music selection cursor on the music map screen in the music playback device according to the embodiment of the present invention.

  When the display control unit 12 reads the music map screen 32 from the screen storage unit 11 and displays it on the display unit 3 based on the control of the central control unit 14 (step A1), the display control unit 12 displays the music map screen 32 on the display unit 3. The cursor control unit 13 is notified of operation screen specifying information indicating this (step A2).

Next, the coordinate conversion unit 8 calculates X-axis and Y-axis rotation angles θ _x and θ _y based on the attitude signal output from the tilt angle detection unit 6 and converted into a digital signal by the AD conversion unit 7. (Step A3), by combining the calculated rotation angles θ _x and θ _y , an angle θ _a indicating in which direction the music playback device 1 is tilted and the magnitude of the tilt angle of the music playback device 1 are obtained. A posture vector R represented by the indicated length r is calculated (step A4).

  Next, the cursor control unit 13 specifies the current cell corresponding to the posture vector R input from the coordinate conversion unit 8 based on the cell information stored in the cell information storage unit 9 (step A5), The movement amount and speed associated with the current cell specified using the conversion table stored in the conversion table storage unit 10 are specified (step A6), and whether the specified movement amount and speed are “0”, that is, It is determined whether or not the music selection cursor 33 is stopped (step A7).

  If the movement amount and speed specified in step A7 are not “0”, the cursor control unit 13 moves the music selection cursor 33 with the movement amount and speed specified in the direction of the posture vector R (step A8). FIG. 6 shows a state in which the cell S2 is specified as the current cell by the attitude vector R calculated by the coordinate conversion unit 8. In this case, the music selection cursor is shown by the conversion table shown in FIG. The movement amount and speed of 33 are specified as L2 and A2, respectively.

  Next, the cursor control unit 13 determines whether or not the operation key 4 is pressed (step A9). When the operation key 4 is pressed, the music data included in the music selection cursor 33 is centrally controlled. The central control unit 14 controls the audio output unit 16 to reproduce the music data notified from the cursor control unit 13 (step A10), and moves the music selection cursor 33. finish.

When the operation key 4 is not pressed in step A9, the process returns to step A3, and the coordinate conversion unit 8 is output from the tilt angle detection unit 6 and is converted into a digital signal by the AD conversion unit 7 based on the attitude signal. Then, rotation angles θ _x and θ _y of the X axis and Y axis are calculated.

  When the movement amount and speed specified in step A7 are “0”, the cursor control unit 13 notifies the display control unit 12 that the music selection cursor 33 has stopped, and the display control unit 12 selects the music selection. The bibliographic data of the music data located in the cursor 33 is read from the database 15 and displayed in the selection data reference area 37 laid out on the music map screen 32 (step A10), and step A9 is reached.

  In the present embodiment, it is configured that the bibliographic data of the music data is displayed in the selection data reference area 37 while the music selection cursor 33 is stopped. However, the music selection cursor 33 moves at a low speed. If there is, the bibliographic data of the music data located in the music selection cursor 33 may be displayed in the selection data reference area 37. In this case, the music selection cursor 33 can be selected while being moved. Music data can be grasped.

Next, the movement operation of the key selection cursor on the key arrangement screen on which a plurality of instruction keys are arranged will be described in detail with reference to FIG.
FIG. 11 is a flowchart for explaining the movement operation of the key selection cursor on the key arrangement screen in the embodiment of the music reproducing device according to the present invention.

  When the display control unit 12 reads the key layout screen 34 from the screen storage unit 11 and displays it on the display unit 3 based on the control of the central control unit 14 (step B1), the key control screen 34 is displayed on the display unit 3. The cursor control unit 13 is notified of operation screen specifying information indicating this (step B2).

Next, the coordinate conversion unit 8 calculates X-axis and Y-axis rotation angles θ _x and θ _y based on the attitude signal output from the tilt angle detection unit 6 and converted into a digital signal by the AD conversion unit 7. (Step B3), by combining the calculated rotation angles θ _x and θ _y , the angle θ _a indicating the direction in which the music playback device 1 is tilted and the magnitude of the tilt angle of the music playback device 1 are obtained. A posture vector R represented by the indicated length r is calculated (step B4).

  Next, the cursor control unit 13 specifies the current cell corresponding to the posture vector R input from the coordinate conversion unit 8 based on the cell information stored in the cell information storage unit 9 (step B5), The movement amount and speed associated with the current cell specified using the conversion table stored in the conversion table storage unit 10 are specified (step B6), and the key is selected with the movement amount and speed specified in the direction of the posture vector R. The cursor 35 is moved (step B7), and the instruction key Km where the key selection cursor 35 is located is selected (step B8). In the key layout screen 34, an instruction key area 36 corresponding to each instruction key Km is set, and the instruction key areas 36 are set adjacent to each other. The key selection cursor 35 is located in any one of the instruction key areas 36 corresponding to the instruction keys Km, and the instruction key Km corresponding to the instruction key area 36 where the key selection cursor 35 is located is selected. Become. Accordingly, as shown in FIG. 11, when it is desired to shift from the state in which the instruction key K23 is selected by the key selection cursor 35 to the state in which the instruction key K5 is selected, the instruction key K23 indicated by the wavy arrow in FIG. By tilting the music reproducing device 1 in the direction of the instruction key K5, the key selection cursor 35 can be moved on the straight line from the instruction key K23 to the instruction key K5 at the shortest distance, and the instruction key K5 can be moved in a short time It becomes possible to select.

  Next, the cursor control unit 13 determines whether or not the operation key 4 has been pressed (step B9). If the operation key 4 has been pressed, it is assigned to the instruction key Km selected by the key selection cursor 35. The central control unit 14 is notified of the performed operation, and the central control unit 14 executes the operation notified from the cursor control unit 13 by controlling the display control unit 12 and the audio output unit 16 (step B10).

If the operation key 4 is not pressed in step B9, the process returns to step B3, and the coordinate conversion unit 8 is output from the tilt angle detection unit 6 and converted into a digital signal by the AD conversion unit 7 based on the attitude signal. Then, rotation angles θ _x and θ _y of the X axis and Y axis are calculated.

Next, a music reproducing system according to another embodiment of the present invention will be described in detail with reference to FIG.
FIG. 12 is a block diagram showing a configuration of an embodiment of a music playback system according to the present invention.

  Referring to FIG. 10, a music playback system 20 according to another embodiment includes a main body device 21 such as a DVD player and a television device, and a remote control device 22 that operates the main body device 21. Display unit 3, coordinate conversion unit 8, cell information storage unit 9, conversion table storage unit 10, screen storage unit 11, display control unit 12, cursor control unit 13, central control unit 14, and reception The remote control device 22 includes an operation key 4, an inclination angle detection unit 6, an AD conversion unit 7, and a transmission unit 24. Note that the display unit 3 of the main device 21 may use display means such as a display connected to the main device 21.

  The transmission unit 24 of the remote control device 22 modulates the attitude signal output from the tilt angle detection unit 6 and converted into a digital signal by the AD conversion unit 7 and the pressing signal of the operation key 4 into an operation signal such as infrared rays, and the main body device. The receiving unit 23 of the main body device 21 demodulates the operation signal received from the remote control device 22 and inputs the attitude signal to the coordinate conversion unit 8 and the pressing signal of the operation key 4 to the cursor control unit 13. Thereby, even if the configuration of the music playback device 1 described above is allocated to the main device 21 and the remote control device 22, the same operation as the music playback device 1 can be performed.

  As described above, according to the present embodiment, the inclination angle detection unit 6 detects the inclination of the apparatus and outputs the attitude signal, and the music player 1 in the direction in which the music reproducing apparatus 1 is inclined based on the attitude signal. By moving the selection cursor 33, selecting music data located in the music selection cursor 33, and playing back the selected music data, the music playback device is moved in the direction in which the music selection cursor 33 is desired to be moved. By simply tilting 1, the music selection cursor 33 for searching the music data developed on the music map screen 32 can be moved in the direction intended by the user, and the music data can be easily searched. There is an effect that can be done.

  Further, according to the present embodiment, the bibliographic data of music data located in the music selection cursor 33 is read from the database 15 and displayed in the selection data reference area 37 laid out on the music map screen 32. By doing this, it is possible to easily confirm the music data located in the music selection cursor 33, and it is possible to easily select desired music data.

  Further, according to the present embodiment, the coordinate converter 8 calculates the rotation angles of the X axis and the Y axis that are parallel to the main surface portion and orthogonal to each other as the X axis rotation angle and the Y axis rotation angle based on the posture signal. At the same time, a posture vector R indicating the direction of tilting is calculated by combining the calculated X-axis rotation angle and Y-axis rotation angle, and the music selection cursor 33 is moved in the direction of the calculated posture vector R. With this configuration, the moving direction of the music selection cursor 33 can be easily determined.

  Furthermore, according to the present embodiment, cell information consisting of a plurality of cells divided in accordance with the length of the posture vector R is stored in the cell information storage unit 9, and the cell is stored in the conversion table storage unit 10. A conversion table that associates each cell of information with the speed is stored, and one cell of the cell information is specified as the current cell based on the attitude vector R, and at the speed associated with the current cell using the conversion table. By configuring the music selection cursor 33 to move, it is possible to reduce the amount of processing necessary for calculating the speed according to the inclination of the music playback device 1.

  It should be noted that the present invention is not limited to the above-described embodiments, and it is obvious that each embodiment can be appropriately changed within the scope of the technical idea of the present invention. In addition, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, and can be set to a suitable number, position, shape, and the like in practicing the present invention. In each figure, the same numerals are given to the same component.

It is a perspective view which shows the external appearance structure of embodiment of the music reproduction apparatus which concerns on this invention. It is a block diagram which shows the structure of the music reproduction apparatus shown in FIG. It is explanatory drawing for demonstrating the use condition of the music reproduction apparatus shown in FIG. It is a figure which shows the example of an output of the inclination angle detection part shown in FIG. It is explanatory drawing explaining the calculation method of the attitude | position vector in the coordinate transformation part shown in FIG. It is a figure which shows the cell information example memorize | stored in the cell information storage part shown in FIG. It is a figure which shows the example of a conversion table memorize | stored in the conversion table memory | storage part shown in FIG. It is a figure which shows the example of a music map screen memorize | stored in the screen memory | storage part shown in FIG. It is a figure which shows the example of a keyboard layout screen memorize | stored in the screen memory | storage part shown in FIG. It is a flowchart for demonstrating the movement operation | movement of the music selection cursor in the music map screen in embodiment of the music reproduction apparatus which concerns on this invention. It is a flowchart for demonstrating the movement operation | movement of the key selection cursor in the key arrangement | sequence screen in embodiment of the music reproduction apparatus which concerns on this invention. It is a block diagram which shows the structure of embodiment of the music reproduction system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Music player 2 Case 3 Display part 4 Operation key 6 Inclination angle detection part 7 AD conversion part 8 Coordinate conversion part (rotation angle calculation means)
DESCRIPTION OF SYMBOLS 9 Cell information memory | storage part 10 Conversion table memory | storage part 11 Screen memory | storage part 12 Display control part 13 Cursor control part 14 Central control part 15 Database 16 Audio | voice output part 20 Music reproduction system 21 Main body apparatus 22 Remote control apparatus 23 Reception part 24 Transmission part 31 Music Map 32 Music map screen 33 Music selection cursor 34 Key layout screen 35 Key selection cursor 36 Instruction key area 37 Selection data reference area

Claims (5)

A music playback device that displays on a display means a music map screen on which a music map in which a plurality of music data is expanded is displayed, and plays back the music data selected by a music selection cursor indicating an area on the music map. And
An inclination angle detecting means for detecting an inclination of the apparatus and outputting an attitude signal;
Cursor control means for moving the music selection cursor in a direction in which the apparatus is inclined based on the posture signal from the inclination angle detection means, and selecting the music data located in the music selection cursor;
A music reproducing apparatus comprising: central control means for executing reproduction of the music data selected by the cursor control means. On the music map screen, a guide information display area in which bibliographic data of the music data is displayed is laid out,
A database in which bibliographic data of the music data is stored;
2. The music reproducing apparatus according to claim 1, further comprising display control means for reading bibliographic data of the music data selected by the cursor control means from the database and displaying the bibliographic data in the guidance information display area. Based on the attitude signal from the tilt angle detection means, the rotation angles of the X axis and the Y axis that are parallel to the main surface portion and orthogonal to each other are calculated as the X axis rotation angle and the Y axis rotation angle, respectively, and the calculated X axis A rotation angle calculating means for calculating a posture vector indicating in which direction it is tilted by combining the rotation angle and the Y-axis rotation angle;
3. The music reproducing apparatus according to claim 1, wherein the cursor control means moves the music selection cursor in the direction of the posture vector calculated by the rotation angle calculating means. Cell information storage means for storing cell information composed of a plurality of cells divided corresponding to the length of the posture vector calculated by the rotation angle calculation means;
Conversion table storage means for storing a conversion table that associates each cell of the cell information stored in the cell information storage means with a speed, and
The cursor control means specifies one cell of the cell information as a current cell based on the posture vector calculated by the rotation angle calculation means, and uses a speed associated with the current cell using the conversion table. 4. The music reproducing apparatus according to claim 3, wherein the music selection cursor is moved with the button. A music map screen including a main body device and a remote control device for operating the main body device, on which a music map in which a plurality of music data is expanded is displayed, is displayed by a music selection cursor indicating an area on the music map. A music playback system for selecting the music data,
The remote control device includes an inclination angle detection means for detecting an inclination of the remote control device and outputting an attitude signal;
An operation key for instructing reproduction of the music data selected by the music selection cursor;
Transmission means for transmitting the posture signal output from the tilt angle detection means and a press signal of the operation key;
The main body device receives the posture signal and the press signal;
Display means for displaying the music map screen;
Cursor control means for moving the music selection cursor in a direction in which the remote control device is tilted based on the attitude signal received by the receiving means, and for selecting the music data located in the music selection cursor;
A music playback system comprising: central control means for executing playback of the music data selected by the music selection cursor based on a pressing signal of the operation key received by the receiving means.

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