JP2009274580A - On-vehicle electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle electronic device which prevents mixed voices from being outputted in spite of conflict among a plurality of audio signals. <P>SOLUTION: The on-vehicle electronic device 1 has an HTML file receiving part 20 for receiving an HTML file from an outer Web server 14 through a network 12, an HTML file analysis part 30 for analyzing whether or not the HTML file includes information in relation to the audio signals, an audio reproduction part 50 for reproducing the audio signals, a voice output selection part 70 which includes a first input for inputting a first audio signal included in the HTML file corresponding to the analysis result of the HTML file and a second input for inputting a second audio signal reproduced by the audio reproduction part 50 and selects one of the first input and the second input in accordance with a pre-determined arrangement, and a speaker 90 for outputting either a selected first audio signal or a selected second audio signal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an in-vehicle electronic device, and more particularly to audio output control when an audio signal is input from a WEB site with audio during reproduction of the audio signal.

  The in-vehicle electronic device has a function of reproducing an audio signal or a video signal from a DVD or a Blu-ray disc, a function of receiving a television broadcast or a radio broadcast, and a navigation function for guiding a road map around the vehicle position. As a result, the use of multimedia for in-vehicle electronic devices is progressing.

  Japanese Patent Application Laid-Open No. 2004-228561 temporarily reproduces an audio reproduction signal until the output of the navigation sound is finished when the navigation sound is interrupted during the output of the audio reproduction signal in an in-vehicle multimedia system having an audio function and a navigation function. A technique for stopping is disclosed.

JP 2000-266558 A

  In-vehicle electronic devices are expanding communication functions in addition to the above functions. By using wireless communication such as a mobile phone, WiFi, WiMax, or the like, the vehicle-mounted electronic device can be connected to the network. For example, it is possible to access a Web server on the Internet, download desired multimedia information therefrom, and view it.

  In such an in-vehicle electronic device, when an audio signal recorded on a DVD or USB memory is being played back and a website with music is accessed, both voices are heard unless the user performs any particular operation. It is output in a mixed state, giving the user an unpleasant feeling. In the case of a home personal computer, the user can easily perform a voice switching operation and a mute operation. However, since the user is driving in an in-vehicle environment, it is not always easy to perform such an operation. is not.

  The present invention solves such a conventional problem, and an object thereof is to provide an in-vehicle electronic device that prevents mixed audio from being output even when a plurality of audio signals compete. .

  An in-vehicle electronic device according to the present invention includes: a receiving unit that receives multimedia information from outside through a communication line; an analyzing unit that analyzes whether the multimedia information includes information about an audio signal; and a recording medium Read means for reading an audio signal, a first input for inputting a first audio signal included in the multimedia information according to an analysis result of the analysis means, and a second audio signal read by the read means Audio output selection means for selecting either the first input or the second input and reproducing the selected audio signal according to a predetermined rule, and the audio output Output means for outputting the first or second audio signal reproduced by the selection means.

  Preferably, the receiving unit supplies the first audio signal included in the multimedia information to the audio output selecting unit according to the analysis result of the analyzing unit. Preferably, the audio output selection means is configured to receive the second input when the first audio signal is input from the first input while the second audio signal is input from the second input. The second audio signal from is reproduced and output. The in-vehicle electronic device further includes an input unit that receives an input from a user, and when there is an input for outputting a first audio signal from the input unit, the audio output selection unit includes the first audio output unit. The first audio signal from the input may be reproduced and output.

  Preferably, the voice output selection means is configured to receive the second input when the second audio signal is input from the second input while the first audio signal is input from the first input. The second audio signal from is reproduced and output. Preferably, the multimedia information includes an HTML file downloaded from an information terminal connected to a network, and the analysis unit analyzes whether or not an audio file is included from the description of the HTML file. Further, the analysis means can analyze whether or not the file is an audio file from the extension of the file of the multimedia information.

  According to the present invention, when the first and second audio signals compete, according to a predetermined rule, either one of the inputs is selected and the audio signal is reproduced and output. Output can be prevented in advance. Furthermore, since the selection is made automatically, the burden on the user's operation in the in-vehicle environment is reduced.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an in-vehicle electronic device according to an embodiment of the present invention. The in-vehicle electronic device 1 includes a communication unit 10 that can be connected to a Web server (information terminal) 14 through an external network 12 by communication means such as a mobile phone, WiFi, and WiMax, and HTML from the Web server 14 via the communication unit 10. An HTML file receiving unit 20 that receives a file, an HTML file analyzing unit 30 that analyzes the received HTML file, a display unit 40 that displays the HTML file on a display, and an audio file from a Web server via the communication unit 10 An audio file receiving unit 50 for receiving, an audio reading unit 60 for reading an audio signal from a CD, DVD, Blu-ray disc, memory, hard disk, externally connected audio reproducing device, and the like, and an audio signal (hereinafter referred to as an audio signal from the audio file receiving unit 50) The first audio signal ) Or an audio signal (hereinafter referred to as a second audio signal) from the audio signal reading unit 60, and selects either the first or second audio signal based on the output sound control signal C, and the selected audio signal An audio output selection unit 70 that reproduces the audio signal, an amplifier 80 that amplifies and converts the reproduced audio signal into an analog signal, a speaker 90 that outputs an analog audio signal from the amplifier 80, an operation unit 100, and each unit. And a control unit 110 for controlling.

  The operation unit 100 can input an instruction from a user, and includes a keyboard, a remote control, a touch panel, and the like. When a music reproduction instruction or music selection information is input from the operation unit 100, the control unit 110 causes the audio signal reading unit 60 to read out a corresponding audio signal based on the reproduction instruction or music selection information. For example, corresponding music data is read out from a plurality of music stored in a CD or a memory and supplied to the audio output selection unit 70 as a second audio signal.

  Further, when accessing the Web server 14 from the in-vehicle electronic device 1, URL information is input from the operation unit 100. The control unit 110 accesses the corresponding Web server 14 via the communication unit 10 based on the URL information. With this access, an HTML file is downloaded from the Web server 14 and is received by the HTML file receiving unit 20. The received HTML file is analyzed by the HTML file analysis unit 30 as to whether or not the information related to the audio signal is included in the HTML file. The received HTML file is further displayed on the display unit 40.

  When the analysis result of the HTML analysis unit 30 is supplied to the communication unit 10 and information about the audio signal is included, the communication unit 10 receives an audio file from the Web server 14 and receives this as an audio file reception unit. 50. The audio file may be automatically received or may be in accordance with a user input from the operation unit 100. The audio output selection unit 70 can input the first audio signal from the audio file receiving unit 50, and can input the second audio signal from the audio signal reading unit 60, and any one of the inputs can be input. Are reproduced and output to the amplifier 80. The selection switching operation of the audio output selection unit 70 is controlled by an output audio control signal C from the control unit 110 as will be described later.

  Next, the HTML file analysis unit 30 will be described. FIG. 2A shows an example of data of an HTML file, and FIG. 2B shows an example of display of the HTML file. HTML is a markup language for describing Web pages. It is used to describe the logical structure and style of documents. In addition, images, sounds, movies, hyperlinks to other documents, etc. are included in documents. Can be embedded.

  In the display screen of FIG. 2 (b), “Menu”, “Please select your favorite item”, “1. News 2. Weather information 3. Traffic information 4. Others” according to the described HTML. Is displayed. Further, the HTML file includes a description 200 regarding the audio signal. FIG. 2C shows the description 200 extracted. “Aaa.mp3” indicates a music file name, “loop” indicates repeated playback, and “autostart” indicates automatic playback.

  The HTML file analysis unit 30 determines whether or not there is a description about the audio signal by determining whether the extension of the music file name and the text of “loop” and “autostart” match the predetermined determination data. To analyze. The HTML file analysis unit 30 requests the communication unit 10 to download a music file (aaa.mp3 in this example) as an analysis result of the HTML file, and the audio signal of the downloaded music file is an audio file reception unit. 50 is received.

  Next, the operation of the audio output selection unit will be described. As described above, the audio output selection unit 70 receives the first input of the first audio signal from the audio file reception unit 50 and the second input of the second audio signal from the audio signal reading unit 60. The first or second audio signal is selected based on the output audio control signal C. When an audio signal is input only from either the first input or the second input, the audio signal is reproduced and output, but the audio signal is input from both the first and second inputs. If so, either the first or second audio signal is selected according to a predetermined convention.

  FIG. 3 is a table showing the relationship between the logical value of the output audio control signal C and the audio output selection unit. When the output sound control signal C is at the high level H, the first input is selected, and when the output sound control signal C is at the low level L, the second input is selected.

  The control unit 110 monitors the audio signal input state of the audio output selection unit 70 based on the operation states of the operation unit 100, the audio signal reading unit 60, and the communication unit 10. The control unit 110 preferably includes a determination table as shown in FIG. 4 in the memory, and determines the logical state of the output audio control signal C according to the determination table.

  As shown in FIG. 4, when only the first audio signal from the web server 14 is input, the output audio signal C is at the H level, and therefore the first audio signal from the web server is reproduced and output. Is done. When only the second audio signal from the audio signal reading unit 60 is being input, the output audio control signal C becomes L level, and therefore the second audio signal is reproduced and output.

  When the second audio signal is input while the first audio signal is being reproduced, the output sound control signal C becomes L level. Thereby, the audio output selection unit 70 reproduces and outputs the second audio signal from the audio signal reading unit 60. On the other hand, when the first audio signal is input while the second audio signal is being reproduced, the output audio signal C becomes L level, and the audio signal from the audio signal reading unit 60 is reproduced and output. The audio signal from the Web server 14 is not reproduced and output.

  FIG. 5 is a flowchart showing an operation example of the in-vehicle electronic device of this embodiment. First, when URL information is input from the operation unit 100 (step S101), the control unit 110 accesses the Web server 14 via the communication unit 10. Then, an HTML file is downloaded from the Web server 14 via the communication unit 10 and received by the HTML file receiving unit 20 (step S102).

  Next, the HTML file analysis unit 30 analyzes the HTML file (step S103), and determines whether or not information on the audio signal is included (step S104). Next, the received HTML file is displayed on the display unit 40. In addition, the analysis result of the HTML file analysis unit 30 is supplied to the communication unit 10, and the communication unit 10 downloads a corresponding audio file from the Web server 14 in response to the analysis result, and this audio file is the audio file receiving unit. 50 (step S105). If the audio file is compressed, the audio file receiving unit 50 decompresses the audio file and outputs it to the audio output selection unit 70 as the first audio signal (step S106).

  The control unit 110 determines whether or not the second audio signal from the audio signal reading unit 60 is being reproduced (step S107). If the second audio signal is being reproduced, the control unit 110 determines that the output audio control signal C at the L level is low. The state is maintained, and only the second audio signal is reproduced and output (step S108). On the other hand, if the second audio signal is not being reproduced, the output audio control signal C at H level is outputted, and the audio signal from the Web server 14 is reproduced and outputted (step S109).

  As described above, according to the present embodiment, even when the first audio signal from the web server and the second audio signal from the audio reading unit compete with each other, one audio signal is automatically and selectively selected. It can output, and the burden of the user's operation in a vehicle-mounted environment can be reduced.

  In the above embodiment, when the first and second audio signals compete with each other, the playback of the second audio signal is always prioritized. When there is a user input for instructing reproduction, reproduction of the second audio signal may be stopped and reproduction of the first audio signal may be performed.

  Also, as shown in FIG. 6, when an input button 210 for instructing voice output exists on the display screen of the HTML file and the user selects the input button 210, playback of the second audio signal is stopped, One audio signal may be reproduced.

  Next, a second embodiment of the present invention will be described. In the first embodiment, the case where the information related to the audio signal is included in the HTML file is illustrated. In the second embodiment, an example in which the audio signal is downloaded directly from the Web server 14 will be described.

  FIG. 7 is a flowchart showing the operation of the second embodiment. First, when URL information is input from the operation unit 100 (step S201), the control unit 110 accesses the Web server 14 via the communication unit 10. The communication unit 10 downloads a data file from the Web server 14 (step S202), and determines whether the data file is an audio file (step S203). Whether or not the file is an audio file is determined by identifying the extension of the data file. The extension is the rightmost part of the file name separated by a period “.”, And is a character string consisting of 3 to 4 alphabets representing the file type. Typical lossy compression audio formats include MP3 (MPEG Audio Layer-3), WMA (Windows Media Audio), AAC (Advanced Audio Coding), etc., and extensions of music files created in these file formats The children are mp3, wma, and aac. If the extension is, for example, txt, pdf, etc., it is determined that the file is not an audio file.

  The communication unit 10 notifies the control unit 110 of the determination result as to whether or not the data file is an audio file. Next, the control unit 110 determines whether or not the second audio signal from the audio signal reading unit 60 is being reproduced (step S204). If the second audio signal is being reproduced, the L level of the output audio control signal C is determined. By maintaining the above, reproduction of the second audio signal is continued (step S205). As a result, the first audio signal is not reproduced and output. On the other hand, when the second audio signal is not being reproduced, the output audio control signal C is set to H level to reproduce the first audio signal (step S205).

  The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the present invention described in the claims. Deformation / change is possible.

It is a block diagram which shows the structure of the vehicle-mounted electronic device which concerns on the Example of this invention. 2A is an example of HTML file data, FIG. 2B is a display example of FIG. 2A, and FIG. 2C is an example of description relating to an audio signal. It is a table which shows the relationship between an output audio | voice control signal and an audio | voice output selection part. It is a figure which shows the determination table which a control part performs. It is a flowchart which shows the audio | voice output operation | movement of the vehicle-mounted electronic device which concerns on a 1st Example. It is a figure explaining the modification in a 1st Example. It is a flowchart which shows the audio | voice output operation | movement of the vehicle-mounted electronic device which concerns on a 2nd Example.

Explanation of symbols

1: Vehicle-mounted device 10: Communication unit 12: Network 14: Web server 20: HTML file reception unit 30: HTML file analysis unit 40: Display unit 50: Audio file reception unit 60: Audio reproduction unit 70: Audio output selection unit 80 : Amplifier 90: Speaker 100: Operation unit 110: Control unit

Claims (7)

Receiving means for receiving multimedia information from outside through a communication line;
Analyzing means for analyzing whether the multimedia information includes information about an audio signal;
Reading means for reading an audio signal from a recording medium;
A first input for inputting a first audio signal included in the multimedia information according to an analysis result of the analysis means, and a second input for inputting a second audio signal read by the reading means. Including, according to a predetermined agreement, selecting either the first input or the second input and reproducing the selected audio signal;
Output means for outputting the first or second audio signal reproduced by the audio output selection means;
In-vehicle electronic device including The in-vehicle electronic device according to claim 1, wherein the receiving unit supplies a first audio signal included in the multimedia information to the audio output selecting unit according to an analysis result of the analyzing unit. The voice output selection means starts from the second input when the first audio signal is input from the first input while the second audio signal is input from the second input. The in-vehicle electronic device according to claim 1, wherein the second audio signal is reproduced and output. The in-vehicle electronic device further includes an input unit that receives an input from a user. When there is an input for outputting a first audio signal from the input unit, the audio output selection unit is configured to output the first input signal. The vehicle-mounted electronic device according to claim 3, wherein the first audio signal from is reproduced and output. When the second audio signal is input from the second input while the first audio signal is input from the first input, the audio output selection unit is configured to receive a signal from the second input. The in-vehicle electronic device according to claim 1, wherein the second audio signal is reproduced and output. The multimedia information includes an HTML file downloaded from an information terminal connected to a network, and the analysis unit analyzes whether or not an audio file is included from a description of the HTML file. In-vehicle electronic devices. The in-vehicle electronic device according to claim 1, wherein the analysis unit analyzes whether the file is an audio file from an extension of the multimedia information file.

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