JP2015219855A - Volume operation device and digital broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a volume operation device which allows a user to adjust the volume of a plurality of sound sources with a simple operation.SOLUTION: A display control unit (23) displays images of a plurality of contents (1, 2) and an image for indicating a coordinate system for adjusting the volume of voices of the plurality of contents (1, 2) on a display unit (13). The voices of the plurality of contents (1, 2) are a plurality of sound sources. On the display unit (13), a touch panel (16) is provided. A coordinate detection unit (21) identifies an instruction coordinate on the coordinate system based on an instruction position on the touch panel (16). The display control unit (23) displays an image for indicating the instruction coordinate on the coordinate system on the display unit (13). A voice control unit (24) determines the volume of the voices of the plurality of contents (1, 2) based on the instruction coordinate, and outputs the voices of the plurality of contents (1, 2) to a voice output unit (14) with the determined volume.

Description

  The present invention relates to a volume operation device that performs volume operation (adjustment) using a touch panel, and a digital broadcast receiver.

  As a technique for performing volume operation (adjustment) using a touch panel, Patent Document 1 discloses a touch panel structure.

  The touch panel structure disclosed in Patent Document 1 includes a plurality of finger touch units. The plurality of finger touch units are arranged in parallel in one direction on the touch panel display surface. Each of the plurality of finger touch portions has a multistage switch function in the length direction. This touch panel structure is applied to voice and lighting. For example, in the case of voice, the number of finger touch units is determined according to the position of the microphone and the type of instrument. Further, in the case of voice, the multi-stage switch function of each finger touch unit gradually adjusts the volume of the associated sound source (microphone or instrument) by moving the finger in the length direction of the finger touch unit. To increase.

  As described above, in the touch panel structure disclosed in Patent Document 1, a plurality of sound sources (microphones and musical instruments) are obtained when the user moves a plurality of fingers with respect to each of the length directions of the plurality of finger touch portions. The volume of can be adjusted.

JP 2013-89216 A

  In the touch panel structure disclosed in Patent Document 1, the user has to adjust the volume of a plurality of sound sources while moving a plurality of fingers, so that the operation (adjustment) becomes complicated.

  Moreover, in the touch panel structure disclosed in Patent Document 1, the user cannot confirm an index indicating the volume of each sound source. Therefore, the user has to adjust the volume of each of the plurality of sound sources while moving a plurality of fingers with a sense, and thus the operation (adjustment) becomes complicated.

  The present invention has been made in view of the above points, and it is an object of the present invention to provide a volume operation device and a digital broadcast receiver that allow a user to adjust the volume of a plurality of sound sources with a simple operation. To do.

  The volume operation device of the present invention is based on a display unit that displays an image representing a coordinate system for adjusting the volume of a plurality of sound sources, a touch panel provided on the display unit, and an indication position on the touch panel. A coordinate detection unit for specifying the designated coordinates on the coordinate system, a display control unit for displaying an image representing the designated coordinates on the coordinate system on the display unit, and a plurality of sound sources based on the designated coordinates. An audio control unit that determines a volume, and an audio output unit that outputs the plurality of sound sources at the determined volume.

  A digital broadcast receiver according to the present invention includes the volume operation device and a reception unit that receives a plurality of sound sources and outputs the received sound to the volume operation device.

  The volume operation method of the present invention is based on a step of displaying an image representing a coordinate system for adjusting the volume of a plurality of sound sources on a display unit, and an indication position on a touch panel provided on the display unit, Specifying the designated coordinates on the coordinate system, displaying an image representing the designated coordinates on the coordinate system on the display unit, and determining the volume of the plurality of sound sources based on the designated coordinates And outputting the plurality of sound sources at the determined volume.

  The computer program of the present invention causes a computer to execute each step of the volume operation method.

  According to the volume control device and the digital broadcasting device according to the present invention, the volume index of a plurality of sound sources is indicated to the user by the coordinate system, so that the user can display the index (image representing the coordinate system). Since it is possible to adjust a plurality of sound sources by a simple operation (for example, specifying the pointing position with one finger) while checking, it is easy to adjust the volumes of the plurality of sound sources.

  Further, in the volume operation device and the digital broadcasting device according to the present invention, the index of the total volume of the plurality of sound sources and the index of the ratio of the volume of the plurality of sound sources are indicated by the coordinate system for the user. It becomes clear where to point to the total volume and volume ratio intended by the user.

1 is a schematic block diagram illustrating a configuration of a volume operating device 10 according to a first embodiment of the present invention. It is a figure which shows the method of specifying a total volume and a volume ratio in the volume operating device 10 which concerns on 1st Embodiment of this invention. It is a figure which shows the method of specifying a total volume and a volume ratio in the volume operating device 10 which concerns on 1st Embodiment of this invention. It is a flowchart which shows a volume determination process as operation | movement of the volume operating device 10 which concerns on 1st Embodiment of this invention. It is a flowchart which shows an audio | voice output process as operation | movement of the volume operating device 10 which concerns on 1st Embodiment of this invention. It is a figure which shows the specific example of the method of specifying a total volume and a volume ratio in the volume operating device 10 which concerns on 1st Embodiment of this invention. It is a figure which shows the method of specifying a total volume and a volume ratio in the volume operating device 10 which concerns on 2nd Embodiment of this invention. It is a figure which shows the method of specifying a total volume and a volume ratio in the volume operating device 10 which concerns on 2nd Embodiment of this invention. It is a schematic block diagram which shows the structure of the digital broadcast receiver 30 which concerns on 3rd Embodiment of this invention.

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

  FIG. 1 is a schematic block diagram showing a configuration of a volume operating device 10 according to the first embodiment of the present invention. The volume operation device 10 includes an input unit 11, a control unit 12, a display unit 13, an audio output unit 14, and a storage unit 15. The display unit 13 is exemplified by an LCD (Liquid Crystal Display). As the audio output unit 14, a speaker is exemplified. An example of the control unit 12 is a CPU (Central Processing Unit). The storage unit stores a computer program executable by the computer, and the CPU reads and executes the computer program.

  The input unit 11 includes a device capable of designating coordinates on a coordinate system larger than two dimensions. Specifically, the input unit 11 includes a touch panel 16 that can specify coordinates on a two-dimensional orthogonal coordinate system (hereinafter, coordinate system). The touch panel 16 is mounted on the display unit 13. The user can operate (adjust) the volume of a plurality of sound sources (sounds of a plurality of contents) as described later by an input operation with one finger on the touch panel 16. The input unit 11 outputs operation information including an instruction position on the touch panel 16 to the control unit 12 in accordance with a user input operation.

  The control unit 12 includes a coordinate detection unit 21, a content reproduction unit 22, a display control unit 23, and an audio control unit 24.

  The coordinate detection unit 21 outputs coordinate information indicating a coordinate system for adjusting the volume of audio of a plurality of contents to the display control unit 23 and the audio control unit 24. In addition, when the operation information is input from the input unit 11, the coordinate detection unit 21 specifies the designated coordinates on the coordinate system based on the designated position of the operation information. The coordinate detection unit 21 outputs instruction information indicating the specified instruction coordinates to the display control unit 23 and the voice control unit 24.

  The content playback unit 22 plays back a plurality of contents received in a broadcast wave or over a network in parallel according to a user's viewing instruction. Further, the content reproduction unit 22 reproduces a plurality of contents stored in a recording medium (not shown) in parallel according to a user's reproduction instruction. Here, the number of contents is 2, and a plurality of contents are referred to as contents 1 and 2. The content reproduction unit 22 outputs an audio signal indicating the audio of the reproduced contents 1 and 2 to the audio control unit 24, and outputs an image signal indicating the image of the reproduced contents 1 and 2 to the display control unit 23.

  The display control unit 23 displays the images of the contents 1 and 2 indicated by the image signal from the content reproduction unit 22 and the image representing the coordinate system indicated by the coordinate information from the coordinate detection unit 21 on the display unit 13. Further, when the instruction information is input from the coordinate detection unit 21, the display control unit 23 displays an image representing the instruction coordinates indicated by the instruction information on the display unit 13 together with the images of the contents 1 and 2 and the coordinate system.

  Based on the coordinates specified by the user (instruction coordinates indicated by the instruction information from the coordinate detection unit 21), the audio control unit 24 performs the total volume and volume of the audio of the contents 1 and 2 indicated by the audio signal from the content reproduction unit 22. Ratio (hereinafter referred to as volume ratio) is determined. The designated coordinates include a value for determining the total sound volume of the contents 1 and 2 with respect to the coordinate system and a value for determining the sound volume ratio of the contents 1 and 2 with respect to the coordinate system. Details of the designated coordinates will be described later. The audio control unit 24 outputs the audio of the contents 1 and 2 to the audio output unit 14 with the determined total volume and volume ratio.

  2 and 3 are diagrams illustrating a method for specifying the total volume and the volume ratio in the volume operating device 10 according to the first embodiment of the present invention.

  First, the content reproduction unit 22 outputs an audio signal indicating the audio of the reproduced contents 1 and 2 to the audio control unit 24, and outputs an image signal indicating the image of the reproduced contents 1 and 2 to the display control unit 23. The coordinate detection unit 21 outputs coordinate information indicating the two-dimensional orthogonal coordinate system S for adjusting the volume of the audio of the contents 1 and 2 to the display control unit 23 and the audio control unit 24. As shown in FIG. 2, the display control unit 23 represents the two-dimensional orthogonal coordinate system S indicated by the images of the contents 1 and 2 indicated by the image signal from the content reproduction unit 22 and the coordinate information from the coordinate detection unit 21. The image is displayed on the display unit 13. Details of the two-dimensional orthogonal coordinate system S will be described later.

  As shown in FIG. 2, the user gives an instruction (refer to a portion indicated by “X” in FIG. 2) to the touch panel 16 using an instruction medium (for example, one finger of the user). At this time, the input unit 11 outputs operation information indicating the indicated position on the touch panel 16 to the coordinate detection unit 21 in response to an instruction to the touch panel 16 by the instruction medium.

  Here, as shown in FIG. 3, it is assumed that the indicated position on the touch panel 16 can be represented by coordinates on the two-dimensional orthogonal coordinate system T. Since the touch panel 16 is mounted on the display unit 13, the two-dimensional orthogonal coordinate system T includes an X axis and a Y axis. If the lower left corner of the touch panel 16 (display area of the display unit 13) is the origin, the X axis of the two-dimensional orthogonal coordinate system T is from the origin to the lower right corner of the touch panel 16 (display area of the display unit 13). An axis extending in the first direction. The Y axis of the two-dimensional orthogonal coordinate system T is an axis extending in the direction perpendicular to the X axis of the two-dimensional orthogonal coordinate system T from the origin to the upper left corner of the touch panel 16 (display area of the display unit 13). .

  The coordinate detection unit 21 converts the indicated position indicated by the operation information from the input unit 11, that is, the coordinates on the two-dimensional orthogonal coordinate system T into the coordinates on the two-dimensional orthogonal coordinate system S.

  Here, as shown in FIG. 3, the designated position on the touch panel 16 is the coordinates (PX, PY) on the two-dimensional orthogonal coordinate system T, and the origin of the two-dimensional orthogonal coordinate system S in the two-dimensional orthogonal coordinate system T. Is (OX, OY). The two-dimensional orthogonal coordinate system S includes an X axis and a Y axis. The X axis of the two-dimensional orthogonal coordinate system S is an axis extending in the first direction from the origin (OX, OY) in the two-dimensional orthogonal coordinate system T. The Y axis of the two-dimensional orthogonal coordinate system S is an axis extending in the direction perpendicular to the X axis of the two-dimensional orthogonal coordinate system S from the origin (OX, OY) in the two-dimensional orthogonal coordinate system T. In this case, the X-axis value of the coordinates (X, Y) on the two-dimensional orthogonal coordinate system S is obtained by X = PX-OX using the X-axis value of the coordinates on the two-dimensional orthogonal coordinate system T. Can do. The value of the Y axis of the coordinates (X, Y) on the two-dimensional orthogonal coordinate system S can be obtained by Y = PY−OY using the value of the Y axis of the coordinates on the two-dimensional orthogonal coordinate system T.

  Of the values included in the coordinates (X, Y) on the two-dimensional orthogonal coordinate system S, the X-axis value represents the total volume of the audio of the contents 1 and 2. Of the values included in the coordinates (X, Y) on the two-dimensional orthogonal coordinate system S, the Y-axis value represents the audio volume ratio of the contents 1 and 2.

  The coordinate detection unit 21 specifies the coordinates (X, Y) described above as designated coordinates on the two-dimensional orthogonal coordinate system S. The coordinate detection unit 21 outputs coordinate information indicating the two-dimensional orthogonal coordinate system S and instruction information indicating instruction coordinates (X, Y) on the two-dimensional orthogonal coordinate system S to the display control unit 23 and the audio control unit 24. To do.

  When the instruction information is input from the coordinate detection unit 21, the audio control unit 24 reproduces content based on the value of the X axis of the instruction coordinates (X, Y) on the two-dimensional orthogonal coordinate system S indicated by the instruction information. The total volume of the audio of the contents 1 and 2 indicated by the audio signal from the unit 22 is determined.

  Here, as shown in FIG. 3, the total volume is set to the minimum volume when the X-axis value of the designated coordinates (X, Y) is 0 (when X = 0), and the designated coordinates (X, Y ) Is the maximum volume when the X-axis value is Xd (when X = Xd).

  Based on the Y-axis value of the designated coordinates (X, Y) on the two-dimensional orthogonal coordinate system S, the audio control unit 24 determines the volume ratio of the audio of the contents 1 and 2 indicated by the audio signal from the content reproduction unit 22. decide.

  Here, as shown in FIG. 3, regarding the volume ratio, when the value of the Y axis of the designated coordinates (X, Y) is 0 (when Y = 0), the volume of the content 1 and the volume of the content 2 are Is a one-to-one relationship. When the value of the Y-axis of the designated coordinates (X, Y) is Yd (when Y = Yd), the ratio between the volume of the content 1 and the volume of the content 2 is 1 to 0. When the value of the Y-axis of the designated coordinates (X, Y) is Yd (when Y = −Yd), the ratio between the volume of the content 1 and the volume of the content 2 is 0: 1.

  Note that the coordinate detection unit 21 is configured such that the values of the X axis and the Y axis of the designated coordinates (X, Y) on the two-dimensional orthogonal coordinate system S are 0 ≦ X ≦ Xd and −Yd ≦ Y ≦ Yd. In addition, instruction information indicating instruction coordinates (X, Y) on the two-dimensional orthogonal coordinate system S is output to the voice control unit 24 as a sound volume instruction. Based on the designated coordinates (X, Y) on the two-dimensional orthogonal coordinate system S indicated by the indication information from the coordinate detection unit 21, the audio control unit 24 displays the contents 1 and 2 indicated by the audio signal from the content reproduction unit 22. The total volume and volume ratio of the audio are determined, and the sounds of the contents 1 and 2 are output to the audio output unit 14 with the determined total volume and volume ratio.

  The display control unit 23, together with the images of the contents 1 and 2, and the image representing the two-dimensional orthogonal coordinate system S, the image representing the designated coordinates (X, Y) on the two-dimensional orthogonal coordinate system S indicated by the designation information (in FIG. Display the pointer Q). The pointer Q in FIG. 3 is a location where the user has indicated the indicated position on the touch panel 16 with one finger.

  Here, as shown in FIG. 3, the image representing the two-dimensional orthogonal coordinate system S includes a figure indicating the boundary of the operation detection range, and the volume ratio between the contents 1 and 2 is approximately 1: 1. The figure which shows the range which becomes may be included.

  As a result, the index of the total volume of the audio of the contents 1 and 2 and the index of the volume ratio of the audio of the contents 1 and 2 are indicated to the user by the two-dimensional orthogonal coordinate system S. It is clear where to indicate the volume and volume ratio.

  When the volume ratio of content 1 with respect to the total volume is R1, and the volume ratio of content 2 is R2, the volume ratio R1 can be obtained by R1 = (Y + Yd) / 2Yd, and the volume ratio R2 is R2 = (− Y + Yd) / 2Yd.

  Further, when the maximum volume of the total volume is Vmax and the total volume is V, the total volume V can be obtained by V = Vmax · X / Xd.

  When the volume of content 1 is V1 and the volume of content 2 is V2, the volume V1 of content 1 can be obtained by V1 = V · R1, and the volume V2 of content 2 is obtained by V2 = V · R2. Can be sought.

  FIG. 4 is a flowchart showing a sound volume determination process as the operation of the sound volume operating device 10 according to the first embodiment of the present invention. FIG. 5 is a flowchart showing an audio output process as the operation of the volume operating device 10 according to the first embodiment of the present invention.

  The voice control unit 24 performs the sound volume determination process and the voice output process in parallel. The sound volume determination process can be performed when the contents 1 and 2 are reproduced or not.

  As shown in FIG. 4, when it is not within the detection period (S1201-No), the coordinate detection unit 21 waits until the detection period is reached. The detection period is, for example, from the start of playback by the content playback unit to the completion of playback. On the other hand, when it is within the detection period (S1201-Yes), the coordinate detection unit 21 continuously checks whether or not the volume adjustment operation is performed (S1202). When the coordinate detection unit 21 does not detect an operation (S1202-No), the sound volume determination process returns to S1201. On the other hand, if the coordinate detection unit 21 detects an operation (S1202-Yes), the audio control unit 24 uses the above-described method (the total volume shown in FIGS. 2 and 3 to determine the total volume and volume ratio of the contents 1 and 2). It is obtained by a method for specifying the volume ratio (S1203).

  As shown in FIG. 5, when there is no audio signal input (S1301-No), the audio control unit 24 waits until an audio signal is input. On the other hand, when there is an input of an audio signal (S1301-Yes), the audio control unit 24 performs the audio of the reproduced contents 1 and 2 according to the total volume and volume ratio of the contents 1 and 2 obtained in S1203 of FIG. Synthesis is performed and output to the audio output unit 14 (S1302).

  Here, as the relationship between the display and the sound, display areas corresponding to the contents 1 and 2 are displayed on the screen (display unit 13), and the relative directions in the display areas of the contents 1 and 2 are as follows: In the designated coordinate system (two-dimensional orthogonal coordinate system S), the direction in which the volume ratio of the audio of the contents 1 and 2 is increased may be matched. Or it is good also as an opposite direction.

  FIG. 6 is a diagram showing a specific example of a method for specifying the total volume and the volume ratio in the volume operating device 10 according to the first embodiment of the present invention.

  As shown in FIG. 6, the display control unit 23 divides the display region of the display unit 13 into two vertically and displays the image of the content 1 indicated by the image signal from the content reproduction unit 22 on the upper display region of the display unit 13. And the image of content 2 indicated by the image signal from the content reproduction unit 22 is displayed in the display area below the display unit 13. Further, the display control unit 23 sets the X axis of the two-dimensional orthogonal coordinate system S indicated by the coordinate information from the coordinate detection unit 21 to be a boundary portion between the upper display region and the lower display region of the display unit 13. In addition, the image representing the two-dimensional orthogonal coordinate system S is made semi-transparent, for example, and displayed superimposed on the contents 1 and 2 images. In this case, in the two-dimensional orthogonal coordinate system S, the volume ratio of the sound of the content 1 increases as the designated coordinates (X, Y) go to the upper display area, and the designated coordinates (X, Y) are displayed on the lower side. The volume ratio of the audio of content 2 increases as the area is reached.

  For example, when the relative direction in the display area of each content 1 and 2 is matched with the direction in which the volume ratio of the audio of each content 1 and 2 is increased in the designated coordinate system (two-dimensional orthogonal coordinate system S) In the aforementioned two-dimensional orthogonal coordinate system S, the direction toward the upper side of the screen (display unit 13) is the positive direction of Y, and the direction toward the lower side of the screen (display unit 13) is the negative direction of Y. Yes, since the designated coordinates are (X, Y), the sound volume ratio R1 of the content 1 and the sound volume ratio R2 of the content 2 are R1 = (Y + Yd) / 2Yd and R2 = (− Y + Yd) / It can be obtained from 2Yd.

  The relative direction in the display area of each content 1 and 2 is opposite to the direction in which the volume ratio of the audio of each content 1 and 2 is increased in the designated coordinate system (two-dimensional orthogonal coordinate system S). In this case, R1 = (− Y + Yd) / 2Yd and R2 = (Y + Yd) / 2Yd.

  As a result, the relative direction of the display areas of the contents 1 and 2 and the sound volume ratio of the contents 1 and 2 in the pointing coordinate system (two-dimensional orthogonal coordinate system S) for adjusting the volume ratio are set. Since the direction of increasing is constant, the index becomes easier to understand for the user.

  Further, the relative direction in the display area of each content 1 and 2 is opposite to the direction in which the volume ratio of the audio of each content 1 and 2 is increased in the designated coordinate system (two-dimensional orthogonal coordinate system S). In this case, when an instruction is given on the touch panel 16, it is difficult for the instruction medium to overlap the display area of the content whose volume ratio is to be increased, so that the volume is adjusted without hindering viewing of the content whose volume ratio is to be increased as much as possible. Can do.

  As described above, in the volume operating device 10 according to the first embodiment of the present invention, the volume index of the audio of the contents 1 and 2 is indicated to the user by the two-dimensional orthogonal coordinate system S, so that the user can While confirming the index (image representing the two-dimensional orthogonal coordinate system S), the audio of the contents 1 and 2 can be adjusted by a simple operation (for example, pointing the pointing position with one finger). The volume of the second voice can be easily adjusted.

  In the volume operating device 10 according to the first embodiment of the present invention, the index of the total volume of the audio of the contents 1 and 2 and the index of the volume ratio of the audio of the contents 1 and 2 are two-dimensional for the user. Since it is indicated by the orthogonal coordinate system S, it is clear where to indicate the total volume and volume ratio intended by the user.

[Second Embodiment]
7 and 8 are diagrams showing a method for specifying the total volume and the volume ratio in the volume operating device 10 according to the second embodiment of the present invention. In the second embodiment, only the changes from the first embodiment will be described.

  First, the content reproduction unit 22 outputs an audio signal indicating the audio of the reproduced contents 1 and 2 to the audio control unit 24, and outputs an image signal indicating the image of the reproduced contents 1 and 2 to the display control unit 23. The coordinate detection unit 21 outputs coordinate information indicating the two-dimensional polar coordinate system P for adjusting the sound volume of the contents 1 and 2 to the display control unit 23 and the sound control unit 24. As shown in FIG. 7, the display control unit 23 displays the images of the contents 1 and 2 indicated by the image signal from the content reproduction unit 22 and the two-dimensional polar coordinate system P indicated by the coordinate information from the coordinate detection unit 21. Are displayed on the display unit 13. Details of the two-dimensional polar coordinate system P will be described later.

  As shown in FIG. 7, the user gives an instruction (refer to a portion indicated by × in FIG. 7) to the touch panel 16 using an instruction medium (one finger of the user). At this time, the input unit 11 outputs operation information indicating the indicated position on the touch panel 16 to the coordinate detection unit 21 in response to an instruction to the touch panel 16 by the instruction medium. Here, as shown in FIG. 8, the indicated position on the touch panel 16 can be represented by coordinates on the two-dimensional orthogonal coordinate system T.

  The coordinate detection unit 21 converts the indicated position indicated by the operation information from the input unit 11, that is, the coordinates on the two-dimensional orthogonal coordinate system T, into coordinates on the two-dimensional polar coordinate system P for volume indication.

  Here, as shown in FIG. 8, the designated position on the touch panel 16 is set to coordinates (PX, PY) on the two-dimensional orthogonal coordinate system T, and the poles of the two-dimensional polar coordinate system P in the two-dimensional orthogonal coordinate system T are set. (OX, OY). The two-dimensional polar coordinate system P includes a moving radius r and a declination angle θ. The radius r of the coordinates (r, θ) on the two-dimensional polar coordinate system P is expressed as follows: r = {((PX−OX) ^ 2 + (PY−OY) ^ 2 )} ^ (1/2). The declination θ of the coordinates (r, θ) on the two-dimensional polar coordinate system P is θ = arctan ((PY-OY) when PX-OX ≠ 0 using the coordinates on the two-dimensional orthogonal coordinate system T. / (PX−OX)), and when PX−OX = 0 and PY−OY ≠ 0, it can be determined by θ = arccotan ((PY−OY) / (PX−OX)). In the case of PX-OX = 0 and PY-OY = 0, it can be obtained by θ = 0.

  Of the values included in the coordinates (r, θ) on the two-dimensional polar coordinate system P, the value representing the radius r represents the total volume of the audio of the contents 1 and 2. Of the values included in the coordinates (r, θ) on the two-dimensional polar coordinate system P, the value representing the deviation angle θ with respect to the origin represents the volume ratio of the audio of the contents 1 and 2.

  The coordinate detection unit 21 specifies the coordinates (r, θ) described above as designated coordinates on the two-dimensional polar coordinate system P. The coordinate detection unit 21 outputs coordinate information indicating the two-dimensional polar coordinate system P and instruction information indicating instruction coordinates (r, θ) on the two-dimensional polar coordinate system P to the display control unit 23 and the audio control unit 24.

  The audio control unit 24 is the content 1 indicated by the audio signal from the content reproduction unit 22 based on the moving radius r of the indicated coordinates (r, θ) on the two-dimensional polar coordinate system P indicated by the indication information from the coordinate detecting unit 21. 2 to determine the total volume of the voice of 2.

  Here, as shown in FIG. 8, the total volume is set to the minimum volume when the radius r of the designated coordinates (r, θ) is 0 (when r = 0), and the designated coordinates (r, θ). Is set to the maximum volume when r is rd (when r = rd).

  The audio control unit 24 determines the audio volume ratio of the contents 1 and 2 indicated by the audio signal from the content reproduction unit 22 based on the deflection angle θ of the designated coordinates (r, θ) on the two-dimensional polar coordinate system P. .

  Here, as shown in FIG. 8, regarding the volume ratio, when the declination θ of the designated coordinates (r, θ) is 0 (when θ = 0), the volume of the content 1 and the volume of the content 2 The ratio is a one-to-one relationship. When the declination θ of the designated coordinates (r, θ) is π−α (when θ = π−α), the ratio between the volume of the content 1 and the volume of the content 2 is 1 to 0. When the declination θ of the designated coordinates (r, θ) is − (π−α) (when θ = − (π−α)), the ratio between the volume of the content 1 and the volume of the content 2 is 0: 1. It is a relationship.

  α is a small positive value smaller than π, and is a space provided to make it difficult to confuse the operation for maximizing the volume ratio of content 1 and the operation for maximizing the volume ratio of content 2. = Π / 12.

  Note that the coordinate detection unit 21 has a radial radius r and a declination angle θ of the designated coordinates (r, θ) on the two-dimensional polar coordinate system P of 0 ≦ r ≦ rd and − (π−α) ≦ θ ≦ π. In the case of −α, instruction information indicating instruction coordinates (r, θ) on the two-dimensional polar coordinate system P is output to the sound control unit 24 as a sound volume instruction. The audio control unit 24 performs audio of the contents 1 and 2 indicated by the audio signal from the content reproduction unit 22 based on the instruction coordinates (r, θ) on the two-dimensional polar coordinate system P indicated by the instruction information from the coordinate detection unit 21. And the audio of the contents 1 and 2 are output to the audio output unit 14 at the determined total volume and volume ratio.

  The display control unit 23, together with the images of the contents 1 and 2, and the image representing the two-dimensional polar coordinate system P, an image representing the designated coordinates (r, θ) on the two-dimensional polar coordinate system P indicated by the designated information (pointer Q in FIG. 8). Is displayed on the display unit 13. The pointer Q in FIG. 8 is a location where the user has indicated the indicated position on the touch panel 16 with one finger.

  Here, as shown in FIG. 8, the image representing the two-dimensional polar coordinate system P includes a figure indicating the boundary of the operation detection range, and the volume ratio of the content 1 and the content 2 has a substantially one-to-one relationship. A figure indicating the range may be included.

  Moreover, the image which shows the range which shows predetermined | prescribed total sound volume may be included. For example, when the maximum volume of the total volume is Vmax, an image representing the two-dimensional polar coordinate system P has a concentric circle indicating a range of Vmax · i / n (n is a positive integer, i is an integer of 1 to n). An image to be shown may be included.

  Thereby, since the index of the total volume of the audio of the contents 1 and 2 and the index of the volume ratio of the audio of the contents 1 and 2 are indicated to the user by the two-dimensional polar coordinate system P, the total volume intended by the user And it becomes clear where to indicate the volume ratio.

  When the volume ratio of the content 1 with respect to the total volume is R1, and the volume ratio of the content 2 is R2, the volume ratio R1 is obtained by R1 = {θ + (π−α)} / {2 (π−α)}. The volume ratio R2 can be obtained by R2 = {− θ + (π−α)} / {2 (π−α)}.

  When the maximum volume of the total volume is Vmax and the total volume is V, the total volume V can be obtained by V = Vmax · r / rd.

  When the volume of content 1 is V1 and the volume of content 2 is V2, the volume V1 of content 1 can be obtained by V1 = V · R1, and the volume V2 of content 2 is obtained by V2 = V · R2. Can be sought.

  As described above, in the volume operating device 10 according to the second embodiment of the present invention, the audio volume index of the contents 1 and 2 is indicated to the user by the two-dimensional polar coordinate system P. Since the sound of the contents 1 and 2 can be adjusted at the designated position (for example, designating the designated position with one finger) while checking the index (image representing the two-dimensional polar coordinate system P), It is easy to adjust the sound volume.

  In the volume operating device 10 according to the second embodiment of the present invention, the index of the total volume of the audio of the contents 1 and 2 and the index of the volume ratio of the audio of the contents 1 and 2 are two-dimensional for the user. Since it is indicated by the polar coordinate system P, it is clear where the user should indicate the total volume and volume ratio intended by the user.

[Third Embodiment]
The volume control device 10 according to the first and second embodiments of the present invention can be applied to a digital broadcast receiver, for example. This is the third embodiment. In the third embodiment, only the changes from the first and second embodiments will be described.

  FIG. 9 is a schematic block diagram showing the configuration of the digital broadcast receiver 30 according to the third embodiment of the present invention. The digital broadcast receiver 30 includes a volume control device 10 according to the first and second embodiments and a receiving unit 30. The receiving unit 30 receives a plurality of contents (contents 1 and 2) distributed by broadcast waves or a network, and outputs them to the content reproduction unit 22 of the volume operation device 10.

  As described above, according to the present invention, the index of the sound volume of the contents 1 and 2 is indicated to the user by the coordinate system, so that the user can display the index (the two-dimensional orthogonal coordinate system S in the first embodiment). The sound of the contents 1 and 2 can be adjusted at the indicated position (for example, indicating the indicated position with one finger) while confirming the image to be displayed or the image representing the two-dimensional polar coordinate system P in the second embodiment). This makes it easy to adjust the sound volume of the contents 1 and 2.

  In addition, the present invention adjusts the sound volume of the contents 1 and 2 by using the index of the total volume of the sounds of the contents 1 and 2 and the index of the volume ratio of the sounds of the contents 1 and 2 to the user. The coordinate system (two-dimensional orthogonal coordinate system S or two-dimensional polar coordinate system P) is used, so it is clear where to indicate the total volume and volume ratio intended by the user.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiment, and the design and the like within the scope of the present invention are within the scope of the claims. included.

1 ... content,
2… content,
10: Volume control device,
11 ... input part,
12 ... control unit,
13 ... display part,
14 ... voice output unit,
15 ... storage part,
16 ... touch panel,
21 ... coordinate detection unit,
22 ... content playback unit,
23 ... display control unit,
24 ... voice control unit,
30 ... Digital broadcast receiver,
31 ... receiving part,
P: 2D polar coordinate system,
Q ... pointer,
S: Two-dimensional orthogonal coordinate system,
T: Two-dimensional orthogonal coordinate system,

Claims (5)

A display unit that displays an image representing a coordinate system for adjusting the volume of a plurality of sound sources;
A touch panel provided on the display unit;
A coordinate detection unit for specifying the designated coordinates on the coordinate system based on the designated position on the touch panel;
A display control unit for displaying an image representing the designated coordinates on the coordinate system on the display unit;
A voice control unit for determining the volume of the plurality of sound sources based on the indicated coordinates;
An audio output unit for outputting the plurality of sound sources at the determined volume;
A volume control device comprising: The indicated coordinates on the coordinate system are:
A value for determining the total volume of the plurality of sound sources;
A value for determining a volume ratio of the plurality of sound sources;
The volume operation device according to claim 1, comprising: The coordinate system is an orthogonal coordinate system including a first axis extending in the first direction from the origin and a second axis extending in the second direction from the origin.
Of the values included in the designated coordinates on the coordinate system, the value of the first axis indicates the total volume of the plurality of sound sources,
3. The volume operating device according to claim 2, wherein a value of the second axis among values included in the designated coordinates on the coordinate system indicates a volume ratio of the plurality of sound sources. The coordinate system is a polar coordinate system including a radius vector and a declination angle;
Of the values included in the designated coordinates on the coordinate system, the value representing the radius indicates a total volume of the plurality of sound sources,
3. The volume operating device according to claim 2, wherein a value representing the declination among values included in the designated coordinates on the coordinate system indicates a volume ratio of the plurality of sound sources. A volume control device according to any one of claims 1 to 4,
A receiving unit that receives a plurality of sound sources and outputs the sound sources to the volume control device;
A digital broadcast receiver comprising: