WO2015011808A1

WO2015011808A1 - Electronic apparatus and sound output control method

Info

Publication number: WO2015011808A1
Application number: PCT/JP2013/070102
Authority: WO
Inventors: 延之栗原
Original assignee: 株式会社東芝
Priority date: 2013-07-24
Filing date: 2013-07-24
Publication date: 2015-01-29

Abstract

According to an embodiment of the present invention, an electronic apparatus is provided with a display, a loudspeaker, terminals and a sound control means. The terminals are provided for the purpose of outputting image signals and sound signals, and have an external display apparatus connected thereto. The sound control means performs control such that, in the cases where a first window is displayed on a screen of the display, and a second window is displayed on a screen of the external display apparatus, first sound signals relating to the first window are outputted to the loudspeaker, and second sound signals relating to the second window are outputted to the terminals.

Description

Electronic device and audio output control method

Embodiments described herein relate generally to an electronic device capable of outputting sound and a sound output control method applied to the device.

In recent years, personal computers equipped with an HDMI (registered trademark) (high-definition multimedia interface) terminal and a DisplayPort terminal have become widespread. HDMI and DisplayPort are interface standards that allow digital transmission of video and audio signals over a single cable. Through transmission via the HDMI terminal or the DisplayPort terminal, for example, an image reproduced by a notebook type personal computer can be displayed on a large-screen television broadcast receiver.

JP 2011-159068 A

By the way, when an external display device is connected to the personal computer, different images can be simultaneously displayed on the built-in display and the external display (multi-display). In a multi-display, for example, one device may be positioned as primary and the other device as secondary, and audio may be output from a speaker provided in the device positioned as the primary.

However, in such a configuration, for example, when a window of a certain software (application program) is displayed on the primary device and a window of another software is displayed on the secondary device, the audio of these two softwares is displayed. There is an inconvenient situation in which the signals are mixed and output from the speaker of one of the display devices connected to the primary or secondary display device.

An object of the present invention is to provide an electronic device and a sound output control method that can appropriately output sound during multi-display.

According to the embodiment, the electronic device includes a display, a speaker, a terminal, and sound control means. The terminal is a terminal for outputting a video signal and an audio signal, and is connected to an external display device. The voice control means outputs a first voice signal related to the first window to the speaker when the first window is displayed on the screen of the display and the second window is displayed on the screen of the external display device. The second audio signal related to the second window is controlled to be output to the terminal.

FIG. 1 is a first diagram illustrating one usage mode of an electronic device according to an embodiment. FIG. 2 is a second diagram illustrating one usage mode of the electronic device of the embodiment. FIG. 3 is a block diagram illustrating an example of a system configuration of the electronic device of the embodiment. FIG. 4 is a block diagram for explaining an operation principle of audio output control executed by the electronic apparatus of the embodiment. FIG. 5 is a block diagram illustrating an example of a functional configuration of an audio control manager executed by the electronic device of the embodiment. FIG. 6 is a diagram illustrating a configuration example of a location management table used by the electronic apparatus of the embodiment. FIG. 7 is a flowchart illustrating an example of a procedure of audio output control processing executed by the electronic apparatus of the embodiment.

Hereinafter, embodiments will be described with reference to the drawings.
First, with reference to FIG. 1 and FIG. 2, one usage mode of an electronic device according to an embodiment will be described. The electronic device of the present embodiment can be realized as a personal computer (PC), a tablet, a TV, or an embedded system built in various electronic devices. Hereinafter, this electronic device is also referred to as a computer 1. The computer 1 includes an LCD (liquid crystal display) 15 and

speakers

21A and 21B.

As shown in FIG. 1, a display device 2 is connected to a computer 1 by a cable 3 that can transmit a video signal and an audio signal, such as an HDMI cable or a DisplayPort cable. The display device 2 includes a display such as an LCD and

speakers

26A and 26B, for example, displays video on the screen using the video signal and the audio signal sent from the computer 1 via the cable 3, and the speaker 26A. , 26B can output sound. The display device 2 is an electronic device that can input video signals and audio signals, such as a speaker-mounted display device or a television broadcast receiver.

Different images can be simultaneously displayed on the screen of the LCD 15 provided in the computer 1 and the screen of the display device 2 connected by the cable 3 (multi-display). In a multi-display, these two screens can be used as if they were one continuous screen.

The user can arbitrarily move the window displayed by the application program on the screen by the operation using the keyboard or pointing device, and can also arbitrarily change the size. Therefore, at the time of multi-display, the user can display a window on any screen among the screen of the LCD 15 (the screen of the computer 1) and the screen of the display device 2, and the window can be appropriately displayed between the two screens. Can be moved.

∙ Application programs may have a function to output audio. For example, an application program having a function of reproducing moving image data and broadcast program data has a function of displaying video, GUI, and the like on a screen and outputting sound from a speaker. For example, an application program having a function of playing music data has a function of displaying a GUI or the like on a screen and outputting sound from a speaker.

In the example shown in FIG. 1, a window 201A displayed by the first application program is displayed on the screen of the LCD 15, and a window 202A displayed by the second application program is displayed on the screen of the display device 2. The sounds output by the first and second application programs are mixed, and the mixed sounds are either the

speakers

21A, 21B provided in the computer 1 or the

speakers

26A, 26B provided in the display device 2. May be output from either of them.

However, when the user looks at the window 201A displayed on the screen of the LCD 15, for example, two sounds by the first and second application programs are mixed and output from the

speakers

21A and 21B of the computer 1. There is a possibility that the voice corresponding to the window 201A being viewed (that is, the voice of the first application program) cannot be heard. In addition, for example, when the user is looking at the window 201A displayed on the screen of the LCD 15, two sounds by the first and second application programs are mixed and output from the

speakers

26A and 26B of the display device 2. In this case, there is a possibility that the sound corresponding to the window 201A being viewed (that is, the sound of the first application program) cannot be heard, and it is uncomfortable that the sound is heard from a different direction from the window 201A being viewed. there is a possibility.

For this reason, in the present embodiment, control is performed so that sound associated with the window is output from the speaker corresponding to the position where the window is displayed. In the example shown in FIG. 1, the sound related to the window 201A on the screen of the computer 1 is output from the

speakers

21A and 21B provided in the computer 1, and the sound related to the window 202A on the screen of the display device 2 is displayed. 2 are output from the

speakers

26A and 26B provided in No. 2. Thus, the user can easily hear the sound related to the window 201A output from the

speakers

21A and 21B when viewing the window 201A, and is output from the

speakers

26A and 26B when viewing the window 202A. The voice related to the window 202A can be easily heard.

In FIG. 2, the display device 4 is connected to the computer 1 by a cable 5 that can transmit a video signal and an audio signal, such as an HDMI cable or a DisplayPort cable, in addition to the configuration shown in FIG. 1. . The display device 4 includes a display such as an LCD and

speakers

28A and 28B, displays video on the screen using video signals and audio signals sent from the computer 1 via the cable 5, and displays the

speakers

28A and 28A. Audio can be output from 28B. The display device 4 is an electronic device that can input video signals and audio signals, such as a speaker-mounted display device or a television broadcast receiver.

Different images are simultaneously displayed on the screen of the LCD 15 provided in the computer 1, the screen of the display device 2 connected by the cable 3, and the screen of the display device 4 connected by the cable 5 (multi-display). Can do. In a multi-display, these three screens can be used as if they were one continuous screen.

In the example shown in FIG. 2, a window 201A displayed by the first application program is displayed on the screen of the LCD 15, a window 202A displayed by the second application program is displayed on the screen of the display device 2, and the third application program And a window 204A displayed by the fourth application program is displayed on the screen of the display device 4. The sounds output by the first, second, third and fourth application programs are mixed, and the mixed sounds are provided in the

speakers

21A and 21B provided in the computer 1 and the display device 2. In some cases, the signal is output from any one of the

speakers

26A, 26B and the

speakers

28A, 28B provided in the display device 4.

As described above, in the present embodiment, control is performed so that sound related to the window is output from the speaker corresponding to the position where the window is displayed. In the example shown in FIG. 2, the sound related to the window 201A on the screen of the computer 1 is output from the

speakers

21A and 21B when viewing the window 201A, and is output from the

speakers

26A and 26B when viewing the window 202A. The voice related to the window 202A can be easily heard. Note that the sound related to the window 203A and the window 204A on the screen of the display device 4 is output from the

speakers

28A and 28B provided in the display device 4. In such a case, for example, either the sound related to the window 203A or the sound related to the window 204A may be output from the

speakers

28A and 28B.

FIG. 3 is a diagram showing a system configuration of the computer 1. As shown in FIG. 3, the computer 1 includes a CPU 11, a memory controller hub (MCH) 12, a main memory 13, a graphics controller 14, a video RAM (VRAM) 14A, an LCD 15, an I / O controller hub (ICH) 16, and a BIOS. ROM 17, hard disk drive (HDD) 18, optical disk drive (ODD) 19, sound controller 20,

speakers

21A and 21B, embedded controller / keyboard controller (EC / KBC) 22, keyboard 23, pointing device 24, network controller 25, HDMI A terminal 26, an inter-device bidirectional control (CEC) controller 27, a DisplayPort terminal 28, and the like are provided.

The CPU 11 is a processor that controls the operation of each unit in the computer 10. The CPU 11 executes an operating system (OS) 100, various driver programs 110, an audio control manager (ACM) 150, and various application programs 200 that are loaded from the HDD 18 to the main memory 13. The audio control manager 150 has a function of managing audio output audio devices output by the application program 200 based on the display device and display position of the window displayed by the application program 200. The application program 200 is, for example, an application having a function of reproducing moving image data or broadcast program data, an application having a function of reproducing music data, or the like.

The CPU 11 also executes the BIOS stored in the BIOS-ROM 17. The BIOS is a program for hardware control.

The MCH 12 operates as a bridge device that connects between the CPU 11 and the ICH 16 and also operates as a memory controller that controls access to the main memory 13. The MCH 12 also has a function of executing communication with the graphics controller 14. The graphics controller 14 is a display controller that controls the LCD 15 built in the computer 1. The graphics controller 14 generates a video signal to be sent to the LCD 15 from the image data written in the VRAM 14A. The graphics controller 14 can also send the digital video signal thus generated to an external display such as the

display devices

2 and 4 via the HDMI terminal 26 or the DisplayPort terminal 28.

The HDMI terminal 26 and the DisplayPort terminal 28 are terminals for outputting a video signal and an audio signal, and are terminals (connectors) to which an external display device is connected. The HDMI terminal 26 and the DisplayPort terminal 28 can send an uncompressed digital video signal and a digital audio signal to an external display such as the

display devices

2 and 4 with a single cable. The HDMI terminal 26 is detachably connectable with an HDMI cable. In addition, the DisplayPort terminal 28 can be detachably connected to the DisplayPort cable.

The ICH 16 controls each device on the PCI (Peripheral Component Interconnect) bus and each device on the LPC (Low Pin Counter) bus. The ICH 16 is directly connected to the BIOS-ROM 17, the HDD 18, the ODD 19, and the sound controller 20, and has a function of controlling them. The HDD 18 stores, for example, television broadcast program data, AV content downloaded via the Internet, and the like. The ODD 19 accommodates a disc storing AV content.

The sound controller 20 is a sound source device, and generates an audio signal to be sent to the

speakers

21A and 21B, the HDMI terminal 26 or the DisplayPort terminal 28 from audio data to be reproduced by various programs. The sound controller 20 controls output of audio signals to the

speakers

21A and 21B, the HDMI terminal 26, and the DisplayPort terminal 28. Therefore, the sound controller 20 can also send the generated digital audio signal to an external speaker via the HDMI terminal 26 and the DisplayPort terminal 28 (for example,

speakers

26A and 26B,

speakers

28A and 28B).

The EC / KBC 22 is a one-chip microcomputer in which an embedded controller for power management and a keyboard controller for controlling a keyboard 23 and a pointing device (for example, a touch pad) 24 are integrated. The EC / KBC 22 has a function of turning on / off the computer 1 in accordance with the operation of the power button by the user.

The network controller 25 is a communication device that executes, for example, wired communication of IEEE 802.3 standard or wireless communication of IEEE 802.11 standard.

The CEC controller 27 executes data transfer control for transmitting / receiving various commands for operation control via the HDMI terminal 26 or the DisplayPort terminal 28 under the control of the EC / KBC 22. One of the events to be powered on monitored by the EC / KBC 22 is reception of a power-on request command by the CEC controller 27. Further, by the communication by the CEC controller 27, it is possible to recognize a function provided in the

display devices

2 and 4 connected by a cable (for example, an HDMI cable, a DisplayPort cable, etc.), for example, to determine the presence or absence of an audio output function. it can.

With reference to FIG. 4, the operation principle of audio output control by the audio control manager 150 executed on the computer 1 will be described.

The audio control manager 150 manages audio output audio devices output by the application programs 201 to 204 based on the display devices and display positions of the windows displayed by the application programs 201 to 204. Here, the window 201A displayed by the application program 201 is displayed on the screen of the LCD 15, the window 202A displayed by the application program 202 is displayed on the screen of the display device 2, and the window 203A and the application displayed by the application program 203 are displayed. Assume that a window 204A displayed by the program 204 is displayed on the screen of the display device 4.

The audio control manager 150 initializes the

audio drivers

111, 112, and 113 corresponding to the LCD 15, the display device 2, and the display device 4, respectively. Then, the audio control manager 150 determines a sound output destination related to each window based on the positions where the

windows

201A, 202A, 203A, and 204A are displayed.

The audio control manager 150 is a first audio device in which an audio stream related to the window 201A displayed on the screen of the LCD 15 built in the computer 1 (that is, an audio stream related to the application 201) is built in the computer 1. (Speaker) It controls so that it may be output by 21A, 21B. The audio control manager 150 outputs an audio stream related to the window 201A to the audio driver program 111 for outputting sound from the

first audio devices

21A and 21B via the stream pipe 41A and the mixer 41B.

The audio driver program 111 sends an audio signal (audio data) to the

first audio devices

21A and 21B using the received audio stream. Thereby, the audio | voice relevant to the window 201A currently displayed on the screen of LCD15 is output from the

1st audio devices

21A and 21B.

The audio control manager 150 also includes a second audio device (in which an audio stream related to the window 202A displayed on the screen of the display device 2 (that is, an audio stream related to the application 202) is built in the display device 2). Speakers) 26A and 26B are controlled to output. The audio control manager 150 outputs an audio stream related to the window 202A to the audio driver program 112 for outputting sound from the

second audio devices

26A and 26B via the stream pipe 42A and the mixer 42B.

The audio driver program 112 sends an audio signal (audio data) to the

second audio devices

26A and 26B using the received audio stream. Thereby, the audio | voice relevant to the window 202A currently displayed on the screen of the display apparatus 2 is output from

2nd audio device

26A, 26B.

Furthermore, the audio control manager 150 displays an audio stream related to the window 203A (ie, an audio stream related to the application 203) displayed on the screen of the display device 4 and an audio stream related to the window 204A (ie, to the application 204). The related audio stream is controlled to be output by the third audio devices (speakers) 28A and 28B built in the display device 4. The audio control manager 150 outputs an audio stream related to the window 203A and an audio stream related to the window 204A from the

third audio devices

28A and 28B via the stream pipe 43A and the mixer 43B. Output to the program 113.

The audio driver program 113 sends audio signals (audio data) to the

third audio devices

28A and 28B using the received audio stream. Thereby, the sound related to the window 203A displayed on the screen of the display device 4 and the sound related to the window 204A are output from the

third audio devices

28A and 28B.

Note that the above-described

stream pipes

41A, 42A, and 43A perform predetermined conversion processing on the audio stream. This conversion process is, for example, a process for applying an effect to the audio stream. Also, when a plurality of audio streams are input to the

mixers

41B, 42B, and 43B, the

mixers

41B, 42B, and 43B mix the plurality of audio streams. Note that when one audio stream is input, the

mixers

41B, 42B, and 43B output the audio stream as it is.

Next, the functional configuration of the audio control manager 150 will be described with reference to FIG. When the audio control manager 150 is incorporated in the computer 1 as a resident program and activated, the audio control manager 150 initializes the location management table 33 and indicates that the application programs 201 to 204 issued by the OS 100 have been activated or terminated. An event, an event indicating that the position where the application programs 201 to 204 are displayed has been changed, and the like are detected. The function of the audio control manager 150 may be realized by being incorporated in the OS 100. The audio control manager 150 includes, for example, a position update unit 31 and an audio output destination switching control unit 32.

The location updating unit 31 detects an event related to display of a window issued by the OS 100. This event may be, for example, an event indicating that a window has been created (ie, an event indicating that a window has been displayed on the screen), an event indicating that a window has been deleted (ie, a window being displayed on the screen) Event indicating that the window has been changed), event indicating that the position of the window has been changed (for example, event indicating that the window has been moved, event indicating that the size of the window has been changed, etc.) including. The position update unit 31 updates the position management table 33 based on the detected event.

FIG. 6 shows a configuration example of the location management table 33 used by the computer 1. The position data includes a plurality of entries corresponding to a plurality of windows. Each entry includes, for example, a window ID, an application ID, a display ID, and coordinates.

In an entry corresponding to a certain window, “Window ID” indicates identification information assigned to the window. “Application ID” indicates identification information given to an application program (an application program displaying the window) 200 related to the window. “Display ID” indicates identification information of a display (display device) on which the window is displayed. “Coordinates” indicate the position of the window on the display. The “coordinate” is represented by, for example, the start coordinate (X coordinate, Y coordinate) and the end coordinate (X coordinate, Y coordinate) of the window.

A plurality of windows may be associated with one application program 200. For example, in a TV application having a two-screen output function for displaying two broadcast programs in two windows, two entries corresponding to the two windows are created.

When the event indicating that a window has been generated is detected, the location updating unit 31 generates an entry in the location management table 33 corresponding to the window and adds the entry to the location management table 33. When an event indicating that the position of the window has been changed is detected, the position update unit 31 changes the value set in the entry of the position management table 33 corresponding to the window to a value indicating the window after the change. change. For example, when the window is moved or resized in the display screen on which the window is displayed, the position update unit 31 sets the position of the window after the change to the “coordinate” in the corresponding entry. Set the coordinates to show. For example, when the position update unit 31 is moved from the display screen on which the window is displayed to another display screen, the position update unit 31 displays the display of the other display in the “display ID” in the corresponding entry. An ID is set, and coordinates indicating the position of the window after the change are set in “coordinates” in the entry.

When the event indicating that the window has been deleted is detected, the position update unit 31 deletes the entry corresponding to the window from the position management table 33.

The audio output destination switching control unit 32 should output the audio signal (audio data) related to each window to the

speakers

21A, 21B, the HDMI terminal 26, and the DisplayPort terminal 28 using the updated position management table 33. To decide.

More specifically, the audio output destination switching control unit 32 first reads an entry from the position management table 33. Then, the audio output destination switching control unit 32 uses the entry to determine on which display device the window is displayed.

When the entry indicates that the first window is displayed on the screen of the LCD 15 (the screen of the computer 1), the audio output destination switching control unit 32 passes through the audio driver 111 to display the first window. The audio signal related to is controlled to be sent to the

speakers

21A and 21B. When the entry indicates that the second window is displayed on the screen of the display device 2 connected via the HDMI terminal 26, the audio output destination switching control unit 32 passes the audio driver 112. The audio signal related to the second window is controlled to be sent to the HDMI terminal 26. When the entry indicates that the third window is displayed on the screen of the display device 4 connected via the DisplayPort terminal 28, the audio output destination switching control unit 32 sets the audio driver 113 to Thus, the audio signal associated with the third window is controlled to be sent to the DisplayPort terminal 28.

Furthermore, the display positions of these first, second and third windows can be changed, for example, within the screen of the LCD 15, within the screen of the display device 2 and within the screen of the display device 4. When an operation for changing the display position is performed, the audio output destination switching control unit 32 relates to each window based on the changed display position, that is, based on the entry of the changed position management table 33. Switch the output destination of the audio signal. For example, when the first window is displayed on the screen of the display device 2 (that is, when the first window is moved from the screen of the LCD 15 to the screen of the display device 2), the audio output destination switching control unit 32 An audio signal related to the window is controlled to be sent to the HDMI terminal 26. For example, when the second window is displayed on the screen of the LCD 15 (that is, when the second window is moved from the screen of the display device 2 to the screen of the LCD 15), the audio output destination switching control unit 32 Control is performed to send audio signals related to the window to the

speakers

21A and 21B.

With the above configuration, when a window is displayed on each of the plurality of displays, the sound corresponding to the window is output from the speaker corresponding to the display on which each window is displayed. Different sound can be output from each of a plurality of corresponding speakers. Thereby, the user can view the window and the sound related to the window without a sense of incongruity on each display having the corresponding speaker. Also, with the above configuration, for example, when a computer 1 reproduces video content stored on a DVD and receives a broadcast program by terrestrial digital broadcasting, a video and speaker displayed on the screen of the LCD 15 by a certain user. The DVD video content is viewed with the audio output from 21A and 21B, and another user is allowed to view the broadcast program with the video displayed on the screen of the display device 2 and the audio output from the

speakers

26A and 26B. Can also be realized.

Note that the window described above includes dialogs, pop-ups, full-screen display in which window frames are not displayed (full-screen display), etc., and switching audio output destinations in this embodiment displays images and outputs audio. It can be applied to various application programs. In the above-described example, the case where the computer 1 is a notebook computer and includes the LCD 15 and the

speakers

21A and 21B has been described. However, the computer 1 is, for example, a desktop computer, Even in a configuration in which an external display device including the LCD 15 and the

speakers

21A and 21B is connected via a cable such as an HDMI cable or a DisplayPort cable, the audio output destination can be similarly controlled.

Next, an example of the procedure of the audio output control process executed by the computer 1 will be described with reference to the flowchart of FIG.

The location updating unit 31 determines whether or not an event issued by the OS 100 indicating that a window has been generated has been detected (block B11). When an event indicating that a window has been generated is detected (YES in block B11), an entry in the position management table 33 corresponding to the window is generated, and the entry is added to the position management table 33 (block B12). ).

When an event indicating that a window has been generated is not detected (NO in block B11), the position update unit 31 determines whether an event indicating that the position of the window has been changed is detected (block) B13). The event indicating that the position of the window has changed includes not only the movement of the window but also the resizing of the window. When an event indicating that the position of the window has been changed is detected (YES in block B13), the position update unit 31 changes the value set in the entry of the position management table 33 corresponding to the window. The value is changed to a value indicating a later window (block B14). For example, when the window is moved or resized in the display screen on which the window is displayed, the position update unit 31 sets the position of the window after the change to the “coordinate” in the corresponding entry. Set the coordinates to show. For example, when the position update unit 31 is moved from the display screen on which the window is displayed to another display screen, the position update unit 31 displays the display of the other display in the “display ID” in the corresponding entry. An ID is set, and coordinates indicating the position of the window after the change are set in “coordinates” in the entry.

When an event indicating that the window position has been changed is not detected (NO in block B13), the position update unit 31 determines whether an event indicating that the window has been deleted is detected (block). B15). When an event indicating that the window has been deleted is detected (YES in block B15), the entry corresponding to the window is deleted from the position management table 33 (block B16).

If no event indicating that the window has been deleted has been detected (NO in block B15), the process returns to block B11 to determine again whether or not an event indicating that a window has been generated has been detected.

Next, the audio output destination switching control unit 32 determines an audio output destination (for example, the speaker 21, the HDMI terminal 26, the DisplayPort terminal 28, etc.) for each window based on the updated position management table 33 (block B17). ). Then, the audio output destination switching control unit 32 outputs the audio data to the determined audio output destination for each window (block B18).

As described above, according to the present embodiment, it is possible to appropriately output sound during multi-display. When the first window is displayed on the screen of the LCD 15 and the second window is displayed on the screen of the display device 2, the audio output destination switching control unit 32 outputs the first audio signal related to the first window to the speakers 21 </ b> A and 21 </ b> B. And the second audio signal related to the second window is controlled to be output to a terminal (for example, HDMI terminal 26, DisplayPort terminal 28). As a result, the user can easily hear the sound related to the first window output from the

speakers

21A and 21B when viewing the first window, and is connected to the terminal when viewing the second window. The sound related to the second window output from the speaker of the displayed display device 2 can be easily heard.

Note that all the procedures of the audio output control process of the present embodiment can be executed by software. For this reason, the same effect as that of the present embodiment can be easily realized simply by installing and executing this program on a normal computer through a computer-readable storage medium storing a program for executing the procedure of the audio output control process. be able to.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

Claims

Display,
Speakers,
A terminal for outputting a video signal and an audio signal, to which an external display device is connected;
When a first window is displayed on the screen of the display and a second window is displayed on the screen of the external display device, a first audio signal related to the first window is output to the speaker, and the second window And an audio control means for controlling to output a second audio signal related to the above to the terminal.
The first window and the second window can change display positions in the screen of the display and in the screen of the external display device,
The electronic device according to claim 1, wherein the audio control unit further controls to output the first audio signal to the terminal when the first window is displayed on a screen of the external display device.
3. The electronic apparatus according to claim 2, wherein the voice control unit further controls to output the second voice signal to the speaker when the second window is displayed on the screen of the display.
The electronic device according to claim 1, wherein the second audio signal is output to a speaker provided in the external display device.
The electronic device according to claim 1, wherein the terminal is connected to the external display device via an HDMI (high-definition multimedia interface) cable.
2. The electronic apparatus according to claim 1, wherein the terminal is connected to the external display device via a DisplayPort cable.
An audio output control method in an electronic device comprising a display, a speaker, a terminal for outputting a video signal and an audio signal, and a terminal to which an external display device is connected,
When a first window is displayed on the screen of the display and a second window is displayed on the screen of the external display device, a first audio signal related to the first window is output to the speaker, and the second window The audio | voice output control method of controlling to output the 2nd audio | voice signal relevant to this to the said terminal.
A program executed by a computer having a display, a speaker, a terminal for outputting a video signal and an audio signal, and a terminal to which an external display device is connected, the program being
When a first window is displayed on the screen of the display and a second window is displayed on the screen of the external display device, a first audio signal related to the first window is output to the speaker, and the second window The program which makes the said computer perform the procedure controlled to output the 2nd audio | voice signal relevant to this to the said terminal.