JP2006211059A - Av external interface for portable telephone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AV external interface for a portable telephone which can provide clear display of contents to be outputted even if they are video contents such as a moving image or contents composed of character information. <P>SOLUTION: The portable terminal device automatically selects a proper output interface from a plurality of different types of output interfaces on the basis of interface selection information for selecting an interface. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an AV external interface such as a mobile phone.

Conventionally, a method of connecting one terminal device and another terminal device with a cable and displaying information displayed on the one terminal device via the cable on another terminal device has been proposed ( (See Patent Document 1). Only the NTSC is assumed as the output interface in the terminal device, and the other terminal device that has acquired the video signal from the one terminal device displays it in the expression format (NTSC) as it is.
Japanese Patent Laid-Open No. 2004-163706

  However, in the method of outputting content with the NTSC interface, it is appropriate to display content such as a moving image. However, when content including character information is displayed for presentation, for example, characters are blurred. There has been a problem that it cannot be displayed clearly.

  In view of such circumstances, the present invention proposes a portable terminal device that selects an appropriate output interface from a plurality of different types of output interface units based on interface selection information for selecting an interface. As a result, even if the content to be output is video content such as a moving image or content including character information for presentation, for example, it can be displayed clearly.

  As the interface selection information, external expression format information that is information indicating the expression format of the content information in the external device may be acquired. At this time, the acquired content information can be analyzed, and external expression format information can be acquired based on the analysis result. In addition, as the interface selection information, content attribute information indicating a content attribute and file extension information indicating a file extension of the content information may be acquired.

  As described above, the portable terminal device according to any one or more of the present invention automatically selects the output interface based on the interface selection information, so that the content to be output is in any format. However, it can be clearly displayed on the external device. This is convenient because the output interface is automatically selected without any special work by the user.

  Moreover, if an appropriate output interface is selected from a plurality of different types of output interface units based on external representation format information as interface selection information, output can be made to an appropriate output interface corresponding to the content content Is beneficial. Similarly, if selection based on content attribute information or file extension information is performed as interface selection information, output can be made to an appropriate output interface corresponding to the content attribute or file extension.

  The best mode for carrying out each invention will be described below. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention.

  The first embodiment will mainly describe claims 1, 7, 8, and 9. The second embodiment will mainly describe claims 2 and 10. The third embodiment will mainly describe claim 3 and the like. The fourth embodiment will mainly describe claim 4 and the like. In the fifth embodiment, claim 5 will be mainly described. The sixth embodiment will mainly describe claim 6 and the like.

  << Embodiment 1 >>

  <Embodiment 1: Overview> Embodiment 1 will be described. This embodiment is a mobile terminal device having a plurality of different types of output interface units.

  FIG. 1 shows an example of the concept of this embodiment. The figure shows a scene where processing for displaying information displayed on the display screen of the mobile terminal device of the present embodiment on an external device is performed. As shown in the figure, the external device corresponds to, for example, a TV, a personal computer, a PDA, a fax, or the like, or a projector that can project and display on a screen. The mobile terminal device has a plurality of different types of output interfaces, and display is performed on an external device such as a television based on the output from an appropriate output interface. The output interface may be a wired interface or a wireless interface.

  <Embodiment 1: Configuration> FIG. 2 shows an example of functional blocks in the present embodiment. The “portable terminal device” (0200) of the present embodiment illustrated in FIG. 2 includes an “output interface unit” (0201).

  Each unit, which is a component of the present invention, is configured by either hardware, software, or both hardware and software. For example, as an example for realizing these, when a computer is used, hardware composed of a CPU, a memory, a bus, an interface, a peripheral device, and the like and software executable on these hardware are listed. be able to. Specifically, the functions of the respective units are realized by sequentially executing the programs developed on the memory, by processing, storing, and outputting data on the memory and data input through the interface. (The same applies throughout this specification.)

  The “portable terminal device” (0200) is a portable terminal device, and corresponds to, for example, a mobile phone, a PHS, a PDA, a laptop computer, and the like.

  The “output interface unit” (0201) performs processing for mediating output from the mobile terminal device to the external device. More specifically, this corresponds to a process for enabling information such as content to be displayed to be displayed on the other party (external device) in an appropriate display format. Here, the external device corresponds to, for example, a projector that can be projected and displayed on a screen in addition to a television, a personal computer, a PDA, a fax, and the like. Which of the plurality of output interfaces is selected will be described in the second and subsequent embodiments.

  The mobile terminal device has a plurality of different types of output interface units. This may be a wired interface or a wireless interface. Specifically, NTSC interface, analog RGB interface, DVI interface, infrared interface, Bluetooth interface, etc. are applicable. The portable terminal device has any two or more output interfaces among these interfaces.

  First, the “NTSC interface” is an interface for a television video signal system (National TV System Committee). The NTSC interface is suitable for outputting video such as moving images and still images. An “analog RGB interface” is an interface for an output image signal system that displays an image based on the three primary colors of Red (red) / Green (green) / Blue (blue). The analog RGB interface is suitable, for example, when outputting presentation materials and text information such as e-mail. The “DVI interface” is a digital display connection interface (Digital Visual Interface). Unlike the analog RGB interface, digital data can be sent as it is without being converted to analog, so that the image quality is improved without signal deterioration. Suitable mainly for output to a PC monitor.

  As the wireless interface, an “infrared interface” and a “Bluetooth interface” are assumed. The “infrared interface” is an infrared interface, such as IrDA (Infrared Data Association). The “Bluetooth interface” is an interface for a wireless transmission method using a 2.4 GHz band. The Bluetooth interface is superior to the infrared interface in that it can be used even if there is an obstacle if the distance between the devices is within 10 m.

  <Embodiment 1: Effect> This embodiment is a mobile terminal device having a plurality of different types of output interface units. Thereby, an appropriate output interface can be selected from a plurality of output interfaces and output to an external device. Even if the content to be output is a video content such as a moving image or a content made up of character information for presentation, for example, it can be displayed clearly.

  << Embodiment 2 >>

  <Embodiment 2: Overview> Embodiment 2 will be described. The present embodiment is a portable terminal device characterized in that an output interface unit to which content is to be output to the outside is selected based on interface selection information for selecting an interface.

  <Embodiment 2: Configuration> FIG. 3 shows an example of functional blocks in the present embodiment. The “portable terminal device” (0300) of this embodiment shown in FIG. 3 includes an “output interface unit” (0301), a “content information acquisition unit” (0302), and an “interface selection information acquisition unit” (0303). ) And an “interface selection unit” (0304).

  The “content information acquisition unit” (0302) acquires content information. “Content information” is information constituting content such as video (moving image / still image) and text. The acquisition of content information includes receiving content information transmitted from the outside, acquiring it from a recording medium (DVD, IC card, etc.), acquiring content information generated inside the mobile terminal device, and the like. Applicable.

  The “interface selection information acquisition unit” (0303) acquires interface selection information. “Interface selection information” is information for selecting an interface. The interface selection information corresponds to information indicating an expression format of content information on an external device, information indicating content attributes, information indicating a file extension of content information, and the like. These details will be described in the third and subsequent embodiments.

  The “interface selection unit” (0304) selects an output interface unit (0301) to which the content acquired by the content information acquisition unit (0302) should be output based on the interface selection information. The selection of the output interface unit based on the interface selection information is performed for clear display on an external device. Specifically, based on information indicating the expression format of the content information on the external device, For video content such as moving images and still images, the NTSC interface is selected, and for text content such as presentation materials, an analog RGB interface is selected. In addition, the NTSC interface is selected for video content such as TV images, and the analog RGB interface is selected for text content such as mail content based on information indicating content attributes. For example, “.mp4” and “.jpg” select the NTSC interface, “.ppt” and “.pdf” select the analog RGB interface, and the like.

  The processing of each other part is the same as in the first embodiment.

  <Embodiment 2: Process Flow> FIG. 4 shows an example of the process flow in the second embodiment. First, content information is acquired (content information acquisition step S0401). Next, interface selection information, which is information for selecting a plurality of different types of output interfaces, is acquired (interface selection information acquisition step S0402). Finally, an output interface for externally outputting the content acquired in the content information acquisition step (S0401) is selected based on the interface selection information (interface selection step S0403).

  The above processing can be executed by a program for causing a computer to execute, and the program can be recorded on a recording medium readable by the computer. (The same applies throughout the specification.)

  <Embodiment 2: Effect> This embodiment is a portable terminal device characterized in that an output interface unit to which content is to be output to the outside is selected based on interface selection information for selecting an interface. By automatically selecting the output interface based on the interface selection information, it is possible to display the output content in any format clearly on the external device. This is convenient because the output interface is automatically selected without any special work by the user.

  << Embodiment 3 >>

  <Embodiment 3: Overview> Embodiment 3 will be described. The present embodiment is a portable terminal device characterized in that external representation format information that is information indicating a representation format of content information in an external device is acquired as interface selection information.

  <Embodiment 3: Configuration> FIG. 5 shows an example of functional blocks in the present embodiment. The “portable terminal device” (0500) of this embodiment shown in FIG. 5 includes an “output interface unit” (0501), a “content information acquisition unit” (0502), and an “interface selection information acquisition unit” (0503). The interface selection information acquisition unit (0503) further includes an “external expression format information acquisition unit” (0505).

  “External expression format information acquisition means” (0505) acquires external expression format information as interface selection information. “External representation format information” is information indicating the representation format of content information on an external device. The external representation format information corresponds to, for example, information indicating the type of representation format such as “video playback processing such as moving images and still images” or “character content display processing”. The external representation format information may be acquired along with the content information, or may be generated according to the result obtained by analyzing the acquired content information. The latter will be described in detail in Embodiment 4.

  The “interface selection unit” (0504) selects an output interface based on the external representation format information. FIG. 6 shows the relationship between the interface selection information and the selected output interface. For example, an NTSC interface can be selected for video content such as moving images and still images, and an analog RGB interface or the like can be selected for text content such as presentation materials.

  The processing of each other part is the same as in the second embodiment.

  <Embodiment 3: Effect> This embodiment is a portable terminal device characterized in that external representation format information, which is information indicating a representation format of content information in an external device, is acquired as interface selection information. According to the external representation format information, it is beneficial to be able to output to an appropriate output interface corresponding to the content.

  << Embodiment 4 >>

  <Embodiment 4: Overview> Embodiment 4 will be described. The present embodiment is a mobile terminal device characterized by analyzing acquired content information and acquiring external representation format information based on the analysis result.

  <Embodiment 4: Configuration> FIG. 7 shows an example of functional blocks in the present embodiment. The “portable terminal device” (0700) of this embodiment shown in FIG. 7 includes an “output interface unit” (0701), a “content information acquisition unit” (0702), and an “interface selection information acquisition unit” (0703). The interface selection information acquisition unit (0703) further includes an “external expression format information acquisition unit” (0705). In addition, the external representation format information acquisition means (0705) includes a “content information analyzer” (0706) and an “external representation format analysis result dependency acquirer” (0707).

  The “content information analyzer” (0706) analyzes the content information acquired by the content information acquisition unit (0702). For the analysis, it is assumed that the amount of motion vector of the object in the image, the sharpness of the contour of the object, the amount of character information, and the like are respectively compared with a predetermined threshold value. For example, analysis can be performed with moving image information when the amount of motion vector of the object in the image is large, and character information when the amount is small. Or, when the sharpness of the contour of the object is high, character information is analyzed. When the sharpness is low, the image information is analyzed. When the amount of character information is large, character information is obtained. Can be analyzed. In addition, decoding processing can be performed by various decoders (MPEG, JPEG decoder, etc.), and based on the result, whether the original information is image information or character information can be analyzed. This analysis result is passed to the external representation format analysis result dependence acquisition unit.

  The “external expression format analysis result dependency acquisition unit” (0707) acquires external expression format information based on the analysis result of the content information in the content information analyzer (0706). Acquire external representation format information such as information indicating the type of representation format such as “video playback processing such as video / still image” or “character content display processing” based on the analysis result of content information To do.

  The “interface selection unit” (0704) selects the output interface based on the external representation format information, selects the NTSC interface for video content such as moving images and still images, and the analog RGB interface for character content such as presentation materials. You can choose.

  The processing of each other part is the same as in the third embodiment.

  <Embodiment 4: Effect> This embodiment is a portable terminal device characterized by analyzing acquired content information and acquiring external representation format information based on the analysis result. By analyzing the content information, it can be expected that output can be performed to an appropriate output interface that more accurately corresponds to the content.

  << Embodiment 5 >>

  <Embodiment 5: Overview> Embodiment 5 will be described. The present embodiment is a portable terminal device characterized by acquiring content attribute information, which is information indicating an attribute of content acquired by the content information acquisition unit, as interface selection information.

  <Embodiment 5: Configuration> FIG. 8 shows an example of functional blocks in the present embodiment. The “portable terminal device” (0800) of this embodiment shown in FIG. 8 includes an “output interface unit” (0801), a “content information acquisition unit” (0802), and an “interface selection information acquisition unit” (0803). , “Interface selection unit” (0804), and interface selection information acquisition unit (0803) has “content attribute information acquisition means” (0805).

  The “content attribute information acquisition unit” (0805) acquires content attribute information as interface selection information. “Content attribute information” is information indicating the attribute of the content acquired by the content information acquisition unit (0802). The content attribute information corresponds to, for example, information indicating the type of content attribute such as “television image content” or “mail content”. The content attribute information may be acquired along with the content information, or may be generated according to the activation state of each function (TV tuner, mailer, etc.) of the mobile terminal device. Further, the content attribute information may be generated based on the file formatting method.

  The “interface selection unit” (0804) selects an output interface based on the content attribute information. FIG. 6 shows the relationship between the interface selection information and the selected output interface. For example, an NTSC interface can be selected for video content such as a television image, and an analog RGB interface or the like can be selected for character content such as mail contents.

  The processing of each other part is the same as in the second embodiment.

  <Embodiment 5: Effect> This embodiment is a portable terminal device characterized by acquiring content attribute information, which is information indicating an attribute of content acquired by the content information acquisition unit, as interface selection information. . According to the content attribute information, it is beneficial to be able to output to an appropriate output interface corresponding to the content attribute.

  << Embodiment 6 >>

  <Sixth Embodiment: Overview> A sixth embodiment will be described. The present embodiment is a mobile terminal device characterized in that file extension information, which is information indicating the file extension of the content information, is acquired as interface selection information.

  <Embodiment 6: Configuration> FIG. 9 shows an example of functional blocks in the present embodiment. The “portable terminal device” (0900) of this embodiment shown in FIG. 9 includes an “output interface unit” (0901), a “content information acquisition unit” (0902), and an “interface selection information acquisition unit” (0903). , “Interface selection unit” (0904), and interface selection information acquisition unit (0903) includes “file extension information acquisition means” (0905).

  The “content information acquisition unit” (0902) acquires content information in a file format.

  “File extension information acquisition means” (0905) acquires file extension information as interface selection information. “File extension information” is information indicating the file extension of the content information. The file extension information corresponds to, for example, information indicating the type of content extension such as “.mp4” or “.pdf”. The file extension information can be acquired from the property information of the file format.

  The “interface selection unit” (0904) selects an output interface based on the file extension information. FIG. 6 shows the relationship between the interface selection information and the selected output interface. For example, “.mp4” or “.jpg” selects the NTSC interface, and “.ppt”, “.pdf”, “.doc”, “.xls”, “.txt”, etc. indicate the analog RGB interface, etc. You can choose.

  The processing of each other part is the same as in the second embodiment.

  <Embodiment 6: Effect> This embodiment is a portable terminal device characterized in that file extension information, which is information indicating an extension of a file of the content information, is acquired as interface selection information. According to the file extension information, it is beneficial to be able to output to an appropriate output interface corresponding to the file extension.

Conceptual diagram for explaining the first embodiment Functional block diagram for explaining the first embodiment Functional block diagram for explaining the second embodiment The figure explaining the flow of processing of Embodiment 2. Functional block diagram for explaining the third embodiment Diagram showing the relationship between interface selection information and output interface Functional block diagram for explaining the fourth embodiment Functional block diagram for explaining the fifth embodiment Functional block diagram for explaining the sixth embodiment

Explanation of symbols

0300 Mobile terminal device 0301 Output interface unit 0302 Content information acquisition unit 0303 Interface selection information acquisition unit 0304 Interface selection unit

Claims (10)

  A mobile terminal device having a plurality of different types of output interface units. A content information acquisition unit for acquiring content information;
An interface selection information acquisition unit that acquires interface selection information that is information for selecting an interface;
The portable terminal device according to claim 1, further comprising: an interface selection unit that selects an output interface unit that should externally output the content acquired by the content information acquisition unit based on the interface selection information.   The portable terminal according to claim 2, wherein the interface selection information acquisition unit includes external expression format information acquisition means for acquiring external expression format information, which is information indicating an expression format of content information in an external device, as interface selection information. apparatus. The external representation format information acquisition means includes a content information analyzer that analyzes the content information acquired by the content information acquisition unit,
An external representation format analysis result dependence acquisition unit for acquiring external representation format information based on the analysis result of the content information in the content information analyzer;
The mobile terminal device according to claim 3, comprising:   The mobile interface according to claim 2, wherein the interface selection information acquisition unit includes content attribute information acquisition means for acquiring content attribute information, which is information indicating an attribute of the content acquired by the content information acquisition unit, as interface selection information. Terminal device. The content information acquired by the content information acquisition unit is file format information,
The portable terminal device according to claim 2, wherein the interface selection information acquisition unit includes file extension information acquisition means for acquiring file extension information, which is information indicating a file extension of the content information, as interface selection information. .   The portable terminal device according to any one of claims 1 to 6, wherein the plurality of different types of output interface units include a wireless interface as well as a wired interface.   The mobile terminal apparatus according to claim 1, wherein the plurality of different types of output interface units are any two or more of an NTSC interface, an analog RGB interface, a DVI interface, an infrared interface, and a Bluetooth interface.   The mobile terminal device according to claim 1, wherein the mobile terminal device has a mobile phone function. A content information acquisition step of acquiring content information;
An interface selection information acquisition step for acquiring interface selection information, which is information for selecting a plurality of different types of output interfaces;
An output interface selection method comprising: an interface selection step of selecting an output interface from which the content acquired in the content information acquisition step is to be output to the outside based on the interface selection information.

Images