JP6110143B2 - Portable electronic device, sound output control method, and sound output control program - Google Patents

Description

  The present application relates to a portable electronic device, a sound output control method, and a sound output control program.

  In recent years, from the viewpoint of copyright protection, when an external device is connected to a mobile phone or the like capable of receiving terrestrial digital broadcasting, the output from the external device of copyright-protected sound related to digital broadcasting is restricted. May be. Non-Patent Document 1 describes the limitation of output from such an external device.

General Incorporated Association, Radio Industry Association, Digital Terrestrial Television Broadcasting Operation Regulations, ARIB TR-B14, Volume 3, Volume 8, “Digital Terrestrial Television Broadcasting Content Protection Regulations”

  However, Non-Patent Document 1 does not describe a case where an external device corresponding to USB-Audio (a USB device that conforms to a device class (Audio class) for handling audio by USB) is connected.

  The present invention proposes a method of controlling the output of copyright-protected sound from an external device when an external device compatible with USB-Audio is connected to the portable electronic device.

  When a portable electronic device according to one aspect is connected to a USB connector to which an external device is connected and a USB-Audio compatible external device is connected to the USB connector, a digital broadcast broadcast wave is received, And a control unit that controls to prevent the copyright-protected sound related to digital broadcasting from being output from the USB-Audio compatible external device.

  A sound output control method according to one aspect is a sound output control method executed by a portable electronic device having a USB connector to which an external device is connected, and a USB-Audio compatible external device is connected to the USB connector. A step of determining whether or not a USB-Audio compatible external device is connected, a step of determining whether or not a digital broadcast broadcast wave is received, and a digital broadcast broadcast wave being received And determining that the copyright-protected sound data related to the digital broadcast is not output from the USB-Audio compatible external device.

  The sound output control program according to one aspect includes a step of determining whether a USB-Audio compatible external device is connected to the USB connector in a portable electronic device having a USB connector to which the external device is connected, and the USB- When it is determined that an external device compatible with Audio is connected, a step of determining whether a broadcast wave of digital broadcasting is received, and when it is determined that a broadcast wave of digital broadcasting is received, And controlling to prevent such copyright-protected sound data from being output from the USB-Audio compatible external device.

FIG. 1 is a block diagram of a mobile phone according to an embodiment. FIG. 2 is a conceptual diagram for explaining control in the control unit. FIG. 3 is a flowchart showing a flow of control by the mobile phone according to the present embodiment. FIG. 4 is a flowchart showing a flow of control by the mobile phone according to the present embodiment. FIG. 5 is a transition diagram of a display image on the display unit of the mobile phone when the control shown in FIG. 4 is executed. FIG. 6 is a transition diagram of a display image on the display unit of the mobile phone when the control shown in FIG. 4 is executed.

  Embodiments for carrying out the present invention will be described in detail with reference to the drawings. Hereinafter, a mobile phone will be described as an example of the mobile electronic device according to the present invention.

(Embodiment)
FIG. 1 is a block diagram showing a functional configuration of the mobile phone according to the present embodiment. As shown in FIG. 1, the mobile phone 100 includes a communication unit 110, a display unit 120, an operation unit 130, a TV tuner 140, a speaker 150, a first connector 160A, a second connector 160B, a storage unit 170, And a control unit 180.

  The communication unit 110 is configured to be able to perform communication such as data transmission / reception and a call through a network such as a public line network. Communication standards supported by the communication unit 110 include, for example, cellular phone communication standards such as 2G, 3G, and 4G. Cellular phone communication standards include, for example, LTE (Long Term Evolution), W-CDMA (Wideband Code Division Multiple Access), WiMAX (Worldwide PDA), WiMAX (Worldwide Interoperability Pc) ) (Global System for Mobile Communications), PHS (Personal Handy-phone System), and the like. The communication unit 110 may support one or more of the communication standards described above.

  The display unit 120 displays image data supplied from the control unit 180 and image data included in broadcast data of terrestrial digital broadcasting (hereinafter referred to as broadcast data). Image data includes moving images and still images. The display unit 120 includes, for example, a liquid crystal display (Liquid Crystal Display), an organic EL (Organic Electro-Luminescence), and the like. Although not shown in FIG. 1, the mobile phone 100 may include a touch sensor for performing operations such as a screen displayed on the display unit 120.

  The operation unit 130 includes a plurality of keys, buttons, and the like, and accepts user operation inputs. The operation unit 130 generates a signal corresponding to the input operation content by operating keys and buttons by the user. The generated signal is input to the control unit 180.

  The TV tuner 140 acquires broadcast data (broadcast wave) of digital broadcasting. The broadcast data includes program configuration information in addition to image data and sound data of the broadcast program. Broadcast data acquired by the TV tuner 140 is sent to the control unit 180. Broadcast data acquired by the TV tuner 140 may be so-called one-segment broadcast data composed of one segment, or may be broadcast data composed of 12 segments.

  The speaker 150 outputs sound. The speaker 150 outputs the sound signal sent from the control unit 180 as a sound. The sound output from the speaker 150 includes, for example, a sound corresponding to the sound data included in the broadcast data acquired by the television tuner 140.

  The first connector 160A is a terminal to which a headset, an earphone microphone, and the like are connected. For example, a terminal on the headset or earphone microphone side is inserted and connected to the first connector 160A. The first connector 160A sends the sound signal sent from the control unit 180 to the connected headset or earphone.

  The second connector 160B is a USB connector to which an external device is connected. Terminals on the external device side are inserted and connected to the second connector 160B. The external devices connected to the second connector 160B include, for example, an external storage, a communication device, and the like in addition to the audio device 200 such as a speaker corresponding to USB-Audio.

  The storage unit 170 stores programs and data. The storage unit 170 is also used as a work area for temporarily storing the processing result of the control unit 180. The storage unit 170 may include any non-transitory storage medium such as a semiconductor storage medium and a magnetic storage medium. The storage unit 170 may include a plurality of types of storage media. The storage unit 170 may include a combination of a portable storage medium such as a memory card, an optical disk, or a magneto-optical disk and a storage medium reading device. The storage unit 170 may include a storage device that is used as a temporary storage area such as a RAM (Random Access Memory).

  In the present embodiment, the storage unit 170 stores at least a sound output control program 170a as shown in FIG. When the connection of an external device compatible with USB-Audio is detected while the TV tuner 140 is activated, the sound output control program 170a outputs the copyright-protected sound included in the digital broadcast to an external device compatible with USB-Audio. Provide a function to control the output from the device.

  Furthermore, if the connection of the USB-Audio compatible external device is detected while the TV tuner 140 is activated, the sound output control program 170a outputs the copyright-protected sound from the USB-Audio compatible external device. A function for displaying information indicating that the information cannot be displayed on the display unit 120 is provided.

  Furthermore, if the sound output control program 170a detects an operation for switching the output destination of the copyright-protected sound to an external device compatible with USB-Audio while the TV tuner 140 is running, the sound output control program 170a is copyright-protected. A function for displaying on the display unit 120 a message indicating that the output destination of the sound cannot be switched to an external device compatible with USB-Audio is provided.

  The control unit 180 is an arithmetic processing device. The arithmetic processing unit includes, for example, a CPU (Central Processing Unit), an SoC (System-on-a-chip), an MCU (Micro Control Unit), and an FPGA (Field-Programmable Gate Array), but is not limited thereto. The control unit 180 implements various functions by comprehensively controlling the operation of the mobile phone 100.

  Specifically, the control unit 180 executes instructions included in a program (or application) stored in the storage unit 170 while referring to data stored in the storage unit 170 as necessary. And the control part 180 controls a function part according to data and a command, and implement | achieves various functions by it. Examples of the functional unit include, but are not limited to, the communication unit 110, the display unit 120, the television tuner 140, the speaker 150, the first connector 160A, and the second connector 160B. The control unit 180 may change the control according to the detection result of the detection unit. The detection unit includes, for example, the communication unit 110, the display unit 120, and the operation unit 130, but is not limited thereto.

  In the present embodiment, the control unit 180 reads the sound output control program 170a from the storage unit 170 and executes it, and when the connection of an external device compatible with USB-Audio is detected while the TV tuner 140 is activated. Is controlled so that the copyright-protected sound included in the digital broadcast is not output from an external device compatible with USB-Audio. While the TV tuner 140 is activated, it includes a case where broadcast data (broadcast wave) of digital broadcasting is received by the TV tuner 140.

  More specifically, when the control unit 180 detects the connection of the external device to the second connector 160B while the TV tuner 140 is activated, the control unit 180 connects based on information acquired from the connected external device. For example, it is determined whether or not the external device is an audio device 200 compatible with USB-Audio. In the case of the audio device 200 compatible with USB-Audio, the control unit 180 performs decoding so as to prevent sound data included in the broadcast data from being output from the audio device 200, for example, as shown in FIG. The sound data included in the data is processed into silence data. FIG. 2 is a conceptual diagram for explaining the control executed by the control unit 180. As shown in FIG. 2, the control unit 180 includes the contents (data) of the area for storing sound data in the USB compatible frame D1 for transmitting the decoded broadcast data to the USB-Audio compatible audio device 200. ) To silence data with 0 set to 0. In order to set the content (data) of the area for storing the sound data to 0, the data of the area for storing the sound data is set to 0, and the data of the area for storing the volume is set to 0. For example. Then, the control unit 180 sends silence data to the audio device 200 via the second connector 160B. As a result, no sound is output from the audio device 200. The control unit 180 may store preset audio data in the area for storing sound data, instead of setting the contents of the area for storing sound data to 0. In this case, the volume may be a predetermined volume. The preset audio data is, for example, audio data “No sound can be output from a connected speaker from the viewpoint of copyright protection”. Note that the case where the TV tuner 140 is being activated includes a case where the control unit 180 is decoding broadcast data acquired by the TV tuner 140. In addition, when the TV tuner 140 is activated, the control unit 180 sends the image data included in the decoded broadcast data to the display unit 120 and transmits the sound data included in the decoded broadcast data to the speaker 150 or This includes the case of sending out to an earphone or the like connected to the first connector 160A.

  Furthermore, when the connection of the USB-Audio compatible external device is detected while the TV tuner 140 is activated, the control unit 180 outputs the copyright-protected sound from the USB-Audio compatible external device. Is displayed on the display unit 120.

  Further, when the control unit 180 detects an operation for switching the output destination of the copyright-protected sound to an external device compatible with USB-Audio while the TV tuner 140 is activated, the control unit 180 detects the copyright-protected sound. Is displayed on the display unit 120 to the effect that the output destination cannot be switched to a USB-Audio compatible external device.

  The flow of control executed by the mobile phone 100 according to the present embodiment will be described with reference to FIGS. 3 and 4 are flowcharts showing the flow of control by the mobile phone 100 according to the present embodiment. 5 and 6 are transition diagrams of display images on the display unit 120 of the mobile phone 100 when the control shown in FIG. 4 is executed. The control shown in FIGS. 3 to 6 is realized by the control unit 180 reading and executing the sound output control program 170a from the storage unit 170. Hereinafter, an example of control when, for example, one-segment broadcasting data is acquired by the mobile phone 100 will be described.

  FIG. 3 shows a control procedure for preventing sound data included in the broadcast data acquired by the mobile phone 100 from being output from the audio device 200. As shown in FIG. 3, when the control unit 180 detects that the USB-Audio compatible audio device 200 is connected to the second connector 160B (step S101), the TV tuner 140 is being activated. It is determined whether or not there is (step S102).

  As a result of the determination, if the television tuner 140 is activated (step S102, Yes), the control unit 180 processes the sound data included in the one-segment broadcast data into silence data (step S103). Subsequently, the control unit 180 switches the output destination of the sound data included in the one-segment broadcasting data to the audio device 200 (step S104). The control unit 180 may automatically switch the output destination of the sound data, or may switch according to a user switching operation.

  After switching the output destination of the sound data to the audio device 200, the control unit 180 sends the silence data to the audio device 200 (step S105), and the control shown in FIG. Thus, since the silence data is transmitted from the mobile phone 100 to the audio device 200, the sound data included in the one-segment broadcasting data is not output from the audio device 200 as sound.

  In step S102, if the result of determination is that the TV tuner 140 is not active (step S102, No), the control unit 180 switches the output destination of the sound data to the audio device 200 (step S106), and FIG. The control shown in FIG. When the moving image content or the music content is being reproduced, the control unit 180 switches the output destination of the sound data to the audio device 200, and then transmits the sound data included in the content to the audio device 200. Thereby, for example, when the mobile phone 100 is reproducing the moving image content or the music content, the sound data included in the moving image content or the music content is output from the audio device 200 as a sound.

  FIG. 4 shows a procedure when another control is added to the control shown in FIG. The control shown in FIG. 4 is different from the control shown in FIG. 3 in steps S206 to S208.

  That is, as shown in FIG. 4, when the external connection of the USB-Audio compatible audio device 200 is detected with respect to the second connector 160B (step S201), the control unit 180 is starting up the TV tuner 140. It is determined whether or not there is (step S202).

  As a result of the determination, if the television tuner 140 is activated (Yes in step S202), the control unit 180 processes the sound data included in the one-segment broadcasting data into silence data (step S203). Subsequently, the control unit 180 switches the output destination of the sound data included in the one-segment broadcasting data to the audio device 200 (step S204), and sends the silence data to the audio device 200 (step S205).

  Subsequently, the control unit 180 determines whether an operation for switching the output destination of the sound data to the audio device 200 has been detected (step S206).

  As a result of the determination, if the operation of switching the output destination of the sound data to the audio device 200 is detected as a result of the determination (step S206, Yes), the control unit 180 cannot switch the output destination of the sound data to the audio device 200. Is displayed on the display unit 120 (step S207), and the control shown in FIG. 4 is terminated.

  On the other hand, when the operation of switching the output destination of the sound data to the audio device 200 is not detected as a result of the determination (No in step S206), the control unit 180 determines that the one seg (broadcast data) is the audio device 200. Is displayed on the display unit 120 (step S208), and the control shown in FIG. 4 is terminated. When the operation for switching the output destination of the sound data to the audio device 200 is not detected, the control unit 180 may immediately display a message indicating that the sound data is not supported, or the state where the operation for switching is not detected is detected for a certain period of time. If it continues, a message indicating that it is not supported may be displayed.

  In step S202, if the result of determination is that the TV tuner 140 is not active (step S202, No), the control unit 180 switches the output destination of the sound data to the audio device 200 (step S209), and FIG. The control shown in FIG.

  The control shown in FIG. 4 will be described with reference to FIGS. 5 and 6 with a display image. The example shown in FIG. 5 corresponds to the control in steps S201 to S204 shown in FIG. The example shown in FIG. 6 corresponds to the control in steps S201 to S206 and S208 shown in FIG.

  As shown in FIG. 5, when the TV tuner 140 is activated, the control unit 180 displays the image data 10 included in the decoded one-segment broadcast data on the display unit 120 and the sound included in the decoded broadcast data. Data is output from the speaker 150 or the like (step S301).

  Subsequently, when it is detected that the USB-Audio compatible audio device 200 is connected while the TV tuner 140 is activated, the control unit 180 outputs sound data included in the one-segment broadcasting data from the audio device 200. Control is performed so as not to occur (step S302). Specifically, the control unit 180 processes sound data included in the one-segment broadcasting data into silence data (see step S103 in FIG. 3). When the connection of the audio device 200 is detected, the control unit 180 may cause the display unit 120 to display the icon 20 indicating the detection of the connection of the audio device 200 on the display unit 120.

  Subsequently, the control unit 180 displays the interface 30 on the display unit 120, for example, in accordance with a user operation (step S303). The interface 30 is an operation screen for switching the sound output destination to the audio device 200 connected to the second connector 160B.

  When the operation for switching the output destination of the sound data to the audio device 200 is detected (step S304), the control unit 180 displays a message 40 indicating that the output destination of the sound data cannot be switched to the audio device 200. 120 (step S305).

  Actually, even if the switching operation can be performed, silence data or preset audio data is transmitted from the mobile phone 100 to the audio device 200, so there is no problem from the viewpoint of copyright protection. However, when the switching operation can be performed, the sound data included in the one-segment broadcasting data is not output as sound from the audio device 200 even if the switching operation is performed. There is a risk of misunderstanding. Therefore, in order to prevent such an inconvenient situation from occurring, the switching operation itself cannot be performed while the TV tuner 140 is being activated (while 1Seg is being activated). If the switching operation can be performed, the switching operation itself is accepted, and the USB compatible audio device 200 displays a message that the one-segment broadcasting data is not supported. Even if no sound is output, it is possible to avoid misunderstanding that it is a failure. In addition, depending on the OS, the mobile phone 100 may have specifications that allow the user to switch the output destination of sound data. In this case, displaying the message 40 on the display unit 120 is effective.

  As shown in FIG. 6, when the TV tuner 140 is activated, the control unit 180 displays the image data 10 included in the decoded one-segment broadcast data on the display unit 120 and the sound included in the decoded broadcast data. Data is output from the speaker 150 or the like (step S401).

  Subsequently, when an external connection of the audio device 200 is detected while the TV tuner 140 is being activated, the control unit 180 performs control so as not to output the sound data included in the one-segment broadcast data from the audio device 200 (step). S402). Specifically, the sound data included in the broadcast data of the control unit 180 One Seg is processed into silence data (see step S203 in FIG. 4). When the external connection of the audio device 200 is detected, the control unit 180 may cause the display unit 120 to display the icon 20 indicating the detection of the external connection of the audio device 200 on the display unit 120.

  Subsequently, when the operation of switching the output destination of the sound data to the audio device 200 is not detected, the control unit 180 displays a message 50 indicating that the one-segment (broadcast data) is incompatible with the audio device 200. (Step S403).

  For example, in the case of an apparatus on the premise that the user switches the output destination of sound data, after the audio device 200 is connected, an operation of switching the output destination of sound data to the audio device 200 is often performed subsequently. It is assumed. However, if the switching operation is not performed immediately after the audio device 200 is connected, the fact that the one-segment broadcasting data is not compatible with the audio device 200 is displayed, for example, as shown in FIG. Before displaying a message indicating that the output destination cannot be switched to the audio device 200 in response to an operation of switching the output destination of the data to the audio device 200, the sound of the one-segment broadcasting data is transmitted to the USB-compatible audio device. The purpose is to promptly notify the user that the data is not output from 200.

  As described above, in this embodiment, when the mobile phone 100 detects an external connection of the USB-compatible audio device 200 while the TV tuner 140 is activated, the sound data included in the decoded broadcast data is converted to silence data. Processed and sent to the audio device 200. Therefore, according to the present embodiment, sound data included in one-segment broadcasting data is not output as sound from the audio device 200, and the copyright of the copyrighted work can be protected.

  Further, in the present embodiment, the mobile phone 100 is compatible with the USB-compatible audio device 200 with a message that the output destination of the sound data cannot be changed or the one-segment broadcasting data when the TV tuner 140 is activated. A message indicating that there is no message is displayed. Therefore, according to the present embodiment, even if the sound data included in the one-segment broadcasting data is not output as sound from the audio device 200, the user misunderstands that the mobile phone 100 or the audio device 200 is faulty. Inconveniences can be prevented, and it is difficult to reduce the convenience for the user.

  In the present embodiment, the example of the control for processing the sound data included in the decoded broadcast data into silence data when the mobile phone 100 detects an external connection of the USB-compatible audio device 200 has been described. However, the present invention is not limited to this example, and the mobile phone 100 may perform control such that the volume (sound pressure level) of sound data included in broadcast data is adjusted to “0” or muted. Good. For example, the mobile phone 100 selects a media volume corresponding to the sound data included in the broadcast data from the incoming / notification volume, the alarm volume, and the media volume, and adjusts the volume to zero. Alternatively, the control unit 180 may perform control so that all of the broadcast data is set to the background in order to control so that the sound data included in the broadcast data is not output to the audio device 200.

  In the present embodiment, the example in which the second connector 160B is a terminal corresponding to USB has been described, but a terminal conforming to another standard may be used. That is, the control (FIG. 3, FIG. 4, etc.) executed by the mobile phone 100 in this embodiment performs encoding when sound data included in broadcast data is output to another externally connected device. Any terminal that does not support secure processing can be applied.

  In the above embodiment, a mobile phone has been described as an example of a device according to the appended claims. However, the device according to the appended claims is not limited to a mobile phone. The device according to the appended claims may be a mobile electronic device other than a mobile phone. Examples of portable electronic devices include, but are not limited to, devices that can output sound data to the outside, such as smartphones, tablets, and media players.

  The characterizing embodiments have been described in order to fully and clearly disclose the technology according to the appended claims. However, the appended claims should not be limited to the above-described embodiments, but all modifications and alternatives that can be created by those skilled in the art within the scope of the basic matters shown in this specification. Should be embodied by a simple configuration.

DESCRIPTION OF SYMBOLS 1 Mobile phone 110 Communication part 120 Display part 130 Operation part 140 TV tuner 150 Speaker 160A 1st connector 160B 2nd connector 170 Memory | storage part 180 Control part

Claims (5)

A USB connector to which an external device is connected;
When a USB-Audio compatible external device is connected to the USB connector, when a broadcast wave of a digital broadcast is received, the copyright-protected sound data related to the digital broadcast is processed into silence data and the copyright A portable electronic device comprising: a control unit that performs control so that the right-protected sound data is not output from the USB-Audio compatible external device. A display unit;
The control unit controls so that the copyright-protected sound is not output from the USB-Audio compatible external device, and information that the copyright-protected sound cannot be output from the external device The portable electronic device according to claim 1, wherein: is displayed on the display unit. A display unit;
The control unit performs control to prevent the copyright-protected sound from being output from the USB-Audio compatible external device, and to switch an output destination of the copyright-protected sound to the external device. 2. The portable electronic device according to claim 1, wherein, when detected, information indicating that the output destination of the copyright-protected sound cannot be switched to the external device is displayed on the display unit. A sound output control method executed by a portable electronic device having a USB connector to which an external device is connected,
Determining whether a USB-Audio compatible external device is connected to the USB connector;
Determining that a USB-Audio compatible external device is connected, determining whether a digital broadcast wave is received;
When it is determined that the broadcast wave of the digital broadcast is received, the copyright-protected sound data related to the digital broadcast is processed into silence data, and the copyright-protected sound data is compatible with the USB-Audio. And a sound output control method including a step of controlling so as not to output from an external device. To a portable electronic device having a USB connector to which an external device is connected,
Determining whether a USB-Audio compatible external device is connected to the USB connector;
Determining that a USB-Audio compatible external device is connected, determining whether a digital broadcast wave is received;
When it is determined that the broadcast wave of the digital broadcast is received, the copyright-protected sound data related to the digital broadcast is processed into silence data, and the copyright-protected sound data is compatible with the USB-Audio. A sound output control program that executes a step of controlling so as not to output from an external device.

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