JP2014168238A - Mobile apparatus, picture display unit, image interface, and cradle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile apparatus capable of outputting a high-definition image while suppressing increase in power consumption, a picture display unit used by being connected to the same, an image interface, and a cradle.SOLUTION: The mobile apparatus, when outputting to an external apparatus second image data having the number of pixels larger than the number of pixels of first image data to display on a display unit, outputs image by a clock and power generated from a picture display unit connected to an external part and a cradle apart from a clock and power inside the mobile apparatus.

Description

  The present invention relates to a mobile device capable of displaying a recorded video signal on an external display, and an image display device, an image interface, and a cradle used in connection with the mobile device.

  A mobile phone capable of outputting a video signal via an external output terminal is disclosed in Patent Document 1.

JP 2007-74025 A

  Usually, an oscillator mounted to drive a mobile phone is about 20 MHz. In the case of a moving image, the signal band when the image input from the camera is compressed and expanded and output is, for example, about 4 MHz in the case of an NTSC signal. Further, for example, it is sufficient that the oscillator of about 20 MHz is mounted on the frequency necessary for displaying on a QVGA (320 × 240 pixels) or VGA (640 × 480 pixels) built-in display.

  However, for example, to output a moving image to a high-definition TV, a pixel clock speed of 70 MHz or higher is required, and several times as many clocks are required for actual internal processing. For example, a 20 MHz oscillator and 70 MHz or higher are required. When both of these oscillators are provided, there is a problem that the substrate area increases. Mobile devices such as mobile phones are generally required to be small, and the size of the substrate must be designed as small as possible.

On the other hand, it is necessary to operate at a frequency as slow as possible in order to ensure sufficient standby time and continuous call time without connecting an AC adapter or the like. Accordingly, even when an oscillator for processing a high-definition size moving image is mounted, it is required to suppress an increase in power consumption.

Therefore, an object of the present invention is to provide a mobile device that can output a high-definition image while suppressing an increase in power consumption, and an image display device, an image interface, and a cradle that are used in connection with the mobile device.

The mobile device according to the present invention is characterized in that, in addition to the clock and power inside the mobile device, the clock and power generated from an externally connected image display device or cradle are supplied via the image interface.

According to the present invention, it is possible to provide a mobile device that can output a high-definition image while suppressing an increase in power consumption, and an image display device, an image interface, and a cradle that are used in connection with the mobile device.

It is explanatory drawing which shows the connection relation of a mobile device, an image display apparatus, and an image interface. It is the figure which showed an example of the internal structure of a mobile device. It is the figure which showed an example of the internal structure of a mobile device. It is a flowchart which shows an example of the operation | movement procedure in a mobile device and HDTV. It is a figure which shows an example of the screen display in a mobile device and HDTV. It is a figure which shows an example of the screen display in a mobile device and HDTV. It is a figure which shows an example of the screen display in a mobile device and HDTV. It is a figure which shows an example of the screen display in a mobile device and HDTV. It is explanatory drawing which shows the example of a screen display in case two mobile devices are used by connecting to HDTV simultaneously. It is explanatory drawing which showed the example of the connection relation of a mobile device, HDTV, an image interface, and a cradle. It is explanatory drawing which showed the example of the connection relation of a mobile device, HDTV, an image interface, and a cradle. It is explanatory drawing which showed the connection form of HDTV, an image interface, and an I / F box.

  FIG. 1 is an explanatory diagram illustrating a connection relationship between a mobile device, an image display device, and an image interface.

  The mobile device 1000 is, for example, a mobile phone, a PDA, a photo storage, and the like, and can store a high-definition image on an internal storage medium. The mobile device 1000 can be connected to an image display device via an I / F line 1010 that is an image interface. Here, an example is shown in which a high-definition display (hereinafter referred to as HDTV) 1020 is used as the image display device. The HDTV 1020 is connected to a communication network 1030 that is connected to a network such as the Internet.

  Here, the HDTV 1020 and the mobile device 1000 are connected via a bidirectional communication I / F line 1011 and an I / F line 1010 including a high-definition video signal line 1012, a power supply line 1013, and a clock line 1014. ing.

  FIG. 2 is a diagram illustrating an example of the internal configuration of the mobile device. In this example, the mobile device 1000 commonly uses the image display circuit 3014 for output to a built-in liquid crystal display (hereinafter referred to as main body LCD) 3015 and output to an external HDTV 1020.

The control circuit 3013 is supplied with power from the battery 3012, and the battery 3012 is charged by the charging circuit 3011. The charging circuit 3011 is supplied with power from the AC adapter 3040 and charges the battery 3012. However, if the current supplied by the AC adapter 3040 is about 600 mA, for example, if the mobile device 1000 consumes a current of several A, for example, the power supply by the AC adapter 3040 cannot catch up, the battery 3012 becomes empty, and the operation continues. Can not do. In order to solve this problem, as shown in FIG. 1, a power supply having a capacity larger than that of the AC adapter 3040 is received from the power supply unit 3030 of the HDTV 1020 via the power supply line 1013, and the battery 3012 is received. The image is supplied to the image display circuit 3014 without going through. As a result, a high-definition video signal can be output to the HDTV 1020 via the high-definition video signal line 1012 shown in FIG.

  On the other hand, the image display circuit 3014 receives power supply from the battery 3012 when the output destination of the display image is the main body LCD 3015. However, even when the output destination of the display image is the main body LCD 3015, when the HDTV 1020 and the mobile device 1000 are connected, power may be supplied from the power supply unit 3030.

  Here, when a display image is output to the HDTV 1020, the image display circuit 3014 is driven by receiving power supply from the power supply unit 3030. At this time, the control circuit 3013 operates the switches 2001, 2002, and 2003 in conjunction with each other so that the power supply 3030 and the battery 3012 do not batting, and switches the output destination of the image display circuit 3014 from the main body LCD 3015 to the HDTV 3020. This switching is performed when the user makes an output request to the HDTV 1020 when the mobile device 1000 and the HDTV 1020 are connected. Note that the switching of the interlock SW 3016 may be performed by detecting insertion of a cable connected to the HDTV, detecting input of the power supply 3020, an instruction from the mobile phone system 3013, or the like.

  When the HDTV 1020 is connected but the AC adapter 3040 is not connected, power is supplied from the power supply unit 3030 to the mobile device 1000 regardless of the display image output destination. In that case, when outputting a display image to the HDTV 1020, the power supply unit 3030 supplies power to the battery 3012 via the charging circuit 3011 while giving priority to power supply to the image display circuit 3014. .

  Further, when the output destination of the display image is the main body LCD 3015, the clock is supplied from the internal clock generator 5015, and when the output destination of the display image is the HDTV 1020, the clock is supplied from the clock generator 4022. At this time, the clock from the internal clock generator 5015 and the clock from the clock generator 3022 are switched using a switch (not shown).

In this example, the clocks from the internal clock generator 5015 and the clock generator 3022 of the HDTV 1020 are switched and used. However, the present invention is not limited to this, and only the clock of the internal clock generator 5015 may be used. . In this case, it is desirable that the clock frequency of the internal clock generator 5015 is an integer multiple of the pixel clock frequency. Note that the frequency of the pixel clock is determined by the number of pixels on the screen of the HDTV 1020 and the scanning speed / frame rate.

  As described above, in this example, the image display circuit 3014 is commonly used for the output to the main body LCD 3015 and the output to the HDTV 1020. However, the present invention is not limited to this, and the image dedicated to the output to the HDTV 1020 is used. A display circuit may be provided. FIG. 3 shows an example in which, in addition to the image display circuit 3014, a high-definition image display circuit 4013, which is a dedicated image display circuit, is provided.

  In the example of FIG. 3, when high-definition video information stored in a memory (not shown) in the control circuit 3013 is output to the HDTV 1020, the high-definition image display circuit 4013 starts its operation, and the control circuit 3013 The input high-definition video information is transmitted to the HDTV 1020 and displayed. At this time, the high-definition image display circuit 4013 with high power consumption is supplied with power from the power supply unit 3030 through the power supply line 1013 of the I / F line 1010 connected to the HDTV 1020. At the same time, a high-speed clock (hereinafter referred to as an HD clock) for processing HDTV-sized images with high power consumption is supplied from the clock generator 3022 via the clock line 1014. Here, the frequency of the HD clock is a frequency necessary for the operation of the high-definition image display circuit 4013, and is desirably an integer multiple of the frequency of the pixel clock.

  Note that, when not connected to the HDTV 1020 or when connected but the video information is not transmitted through the high-definition video signal line 1012, power is not supplied to the high-definition image display circuit 4013. Even when driving the high-definition image display circuit 4013, the power and clock necessary for driving can be supplied from the HDTV 1020, and output to the HDTV 1020 can be performed without applying a load to the battery 3012. I can do it.

  FIG. 4 is a flowchart illustrating an example of an operation procedure in the mobile device and the HDTV. 4A shows an operation flow of the mobile device 1000, and FIG. 4B shows an operation flow of the HDTV 1020. These operation flows are executed based on programs stored in memories (not shown) of the mobile device 1000 and the HDTV 1020, respectively.

  The mobile device 1000 first confirms the connection of the I / F line 1010 (S2000). When the connection is recognized, a message requesting to start communication is transmitted to the connection destination device through the bidirectional communication I / F line 1011 on the I / F line 1010 (S2010). The HDTV 1020 first confirms the connection of the I / F line 1010 (S4000) in the same manner as the mobile device 1000 (S4000), and then receives a message requesting the start of communication transmitted from the mobile device 1000 (S4010). In response, a message including identification information for identifying HDTV 1020 and information indicating that a high-definition image can be displayed is returned (S4011).

  The mobile device 1000 receives this message (S2011), and switches the operation mode to a mode for outputting an image to the HDTV 1020 (S2012). At this time, for example, as shown in FIG. 5, a message for selecting a function to be displayed on the HDTV 1020 is displayed. When the HDTV 1020 transmits a message including its own device information, the HDTV 1020 switches to a mode in which information from the mobile device 1000 is displayed on the screen, and displays, for example, a message as shown in FIG. Next, it is determined whether the operation mode is to be displayed on the entire screen of the HDTV 1020 as shown in FIG. 6 or displayed on a part of the screen of the HDTV 1020 as shown in FIG. Determine (S2020). The partial display means, for example, displaying a window on the screen and displaying an image transmitted from the mobile device only in the window.

  This determination is performed based on the result of reading the selection result from the memory (not shown) of the control circuit 3013 when the user has selected and set the full screen or partial display in advance. This user setting may be set for each function such as the Internet, e-mail, and image reproduction regardless of the function. For example, when displaying image data such as the Internet or image playback, it is easier to see it on the full screen, and in the case of e-mail, if text data is displayed, even a part of the screen can be read sufficiently. Since an appropriate display method is different for each function, the user-friendliness can be improved by enabling the setting for each function. If the user has not been selected, either the full screen or partial display is selected as the default setting, or a message requesting the user to select is displayed on the main body LCD 3015.

  As a result of the determination, for example, when displaying the full screen size, first, the output image size is HDTV size from the mobile device 1000 to the HDTV 1020 through the bidirectional communication I / F line 1011 on the I / F line 1010. Information is sent (S2021). The HDTV 1020 receives it (S4021) and recognizes that the video signal from the mobile device 1000 is the full screen size.

  On the other hand, as a result of the discrimination, when partial display is performed, first, the output image size from the mobile device 1000 to the HDTV 1020 is set to the window size through the bidirectional communication I / F line 1011 on the I / F line 1010. Information is sent (S2022). The HDTV 1020 receives it (S4022) and recognizes that the video signal from the mobile device 1000 is the window size. Then, the mobile device 1000 transmits the full screen size image (S2030) or the window size image (S2040) to the HDTV 1020 according to the screen display setting. The HDTV 1020 displays the received full-screen size image (S4030) or displays the window size image superimposed on the image originally displayed on the HDTV (S4040).

  In these cases, whether the I / F line 1010 is connected or not is confirmed by detecting the physical insertion of the I / F line connector, the polarity of the signal line on the I / F line 1010, etc., and the control circuit 3013 of the mobile device 1000. The HDTV 1020 control circuit (not shown) performs detection.

  6 to 8 are explanatory diagrams illustrating examples of screen displays displayed on the mobile device and the HDTV after executing S2030 and S4030 of FIG. 4 or S2040 and S3040.

  The example of FIG. 6 shows a case where the weather forecast content is viewed on the Internet. On the screen of the mobile device 1000, simplified information that can be displayed on the LCD of the 3015 main body is displayed. At the same time, detailed information utilizing the size and resolution of the HDTV 1020 screen is displayed on the HDTV 1020 through the high-definition video signal line 1012. In this example, display including a map is performed. All operations on the Internet are performed by using the mobile device 1000.

  FIG. 7 shows an example in which the e-mail application is simultaneously operated in the state where the weather forecast application is executed as shown in FIG.

  When the e-mail application is operated while viewing the weather forecast using the Internet on the HDTV1020, the screen of the mobile device 1000 is the same screen as when the mobile device 1000 is used alone. It becomes a screen that can perform operations such as. In the case of this example, the HDTV 1020 screen displays a weather forecast screen similar to that shown in FIG. 6 while using the entire screen, and displays an e-mail screen as a sub-screen. Similar to FIG. 6, the e-mail screen is operated by operating the mobile device 1000. In addition, although the case where the weather forecast is viewed on the HDTV 1020 using the Internet has been described as an example, the present invention is not limited to this, and when the HDTV 1020 is playing a moving image, the email screen is similarly displayed. It may be displayed. In addition, the e-mail screen is not limited to being displayed over the image previously displayed on the HDTV 1020, and the screen may be divided and displayed as shown in FIG.

  FIG. 9 is an explanatory diagram showing an example of screen display when two mobile devices are used by simultaneously connecting to an HDTV.

  Here, the screen of the HDTV 1010 is divided and the screens transmitted or controlled from the two mobile devices 1000 and 1040 are simultaneously displayed.

  This example is particularly effective when an ultra-large HDTV such as 100 inches is used. In addition to the example shown in the figure, an HDTV 1010 displays an original television broadcast and a child screen as shown in FIG. The number of mobile devices may be overlaid.

  In addition, with the agreement of the operators of both mobile devices, the transmission screen from one of the mobile devices can be displayed on the full screen of the HDTV 1010, or the screen can be changed from the mobile device 1000 to the transmission screen of the mobile device 1040. Switching operation may be possible.

  Further, a communication network may be connected to the HDTV 1010, and content displayed on the screen of the HDTV 1010 and further content displayed on the mobile device 1000 may be received by the HDTV 1010 from the communication network 1030. Also, one mobile device may use the communication function of the mobile device itself, and the other mobile device may display and operate content using a communication network connected to the HDTV 1010.

  FIG. 10 is an explanatory diagram showing an example of a connection relationship between the mobile device, the HDTV, the image interface, and the cradle.

  In this example, power and a clock for driving the high-definition image display circuit 4013 in the mobile device 1000 are supplied from a cradle 5000 installed when the mobile device 1000 is not used. The cradle 5000 includes a clock generation unit 5010 and a power supply unit 5020 that supply a clock and power to the mobile device 1000. The clock generated from the clock generation unit 5010 is input to the mobile device 1000 through the clock line 5030. Similarly, power generated from the power supply unit 5020 is input to the mobile device 1000 through the power supply line 5040.

  In this case, it is desirable to install the cradle 5000 in a place that can be reached by the viewer, such as a handrail on the sofa when the user views the HDTV 1020.

In this example, the content displayed on the mobile device 1000 is transferred to the communication network 10 via the HDTV 1020.
Although the example obtained from 30 is described, it is not limited to this. The mobile device 1000 may be connected to a communication network to acquire content.

FIG. 11 is an explanatory diagram showing an example of the connection relationship between the mobile device, HDTV, image interface, and cradle. In this example, the cradle 5000 is provided with the function of the high-definition video display circuit 4013 in the mobile device 1000 shown in FIG.

High-definition display circuit for displaying content output from mobile device 1000 on HDTV1020
Since the 5050 functions only when the mobile terminal 1000 and the HDTV 1020 are connected, the high-definition display circuit 5050, the power supply unit 5020 and the clock generation unit 5010 that drive the high-definition display circuit 5050, and the cradle 5000 that connects the mobile device 1000 and the HDTV 1020 By having everything in the mobile device 1000
Both miniaturization and output function to HDTV1020 can be achieved.

  FIG. 12 is an explanatory diagram showing the connection form of the mobile device, HDTV, image interface, and I / F box. This embodiment is characterized in that the connection between the mobile device 1000 and the HDTV 1020 is performed wirelessly by the wireless connection 1060.

  As a method of the wireless connection 1060, any method such as short-range wireless communication such as infrared or Bluetooth may be used. According to this example, the user can operate the mobile device 1000 while holding the mobile device 1000 alone, so that the user can install the mobile device 1000 on the handrail of the sofa used by the user, as considered in FIG. There is no need for consideration and it is easy to use.

1000 ... mobile device, 1020 ... HDTV, 1010 ... I / F line, 1030 ... communication network

Claims (24)

A mobile device having a built-in battery and capable of operating as a single device, the mobile device having a number of pixels greater than the number of pixels of the first image data displayed on a display device included in the mobile device. The second image data can be output externally, and when the second image data is output externally, power is supplied to a circuit unit that outputs the second image data externally via a connection cable to an external device. A mobile device characterized by receiving. The mobile device according to claim 1, wherein the power received via the connection cable is also used as power for charging the battery. A mobile device having a built-in battery and capable of operating as a single device, the mobile device having a number of pixels greater than the number of pixels of the first image data displayed on a display device included in the mobile device. The second image data can be output externally, and when the second image data is output externally, a clock is supplied to the circuit unit for externally outputting the second image data via a connection cable to an external device. A mobile device characterized by receiving. 4. The mobile device according to claim 3, wherein the clock is an integer multiple of a frequency necessary for displaying the second image data output externally. 4. The mobile device according to claim 3, wherein the clock supplied to the display device and the circuit unit for external output is supplied by the clock built in the mobile device when displayed on the built-in display device. A mobile device characterized by being supplied with a clock supplied from an external device when operating. A mobile device having a built-in battery and capable of operating as a single device, the mobile device having a number of pixels greater than the number of pixels of the first image data displayed on a display device included in the mobile device. The second image data can be output to the outside, and when the second image data is output to the outside, power and clock are supplied to a circuit unit that outputs the second image data to the outside via a connection cable to an external device. A mobile device characterized by receiving supply. A mobile device having a built-in battery and capable of operating as a single device, the mobile device having a number of pixels greater than the number of pixels of the first image data displayed on a display device included in the mobile device. The second image data can be externally output, and when the second image data is output externally, the mobile device recognizes that the mobile device is connected to the external device via a connection cable to the external device. The mobile device displays a selection menu for selecting image data that can be output to an external device. An image display device capable of displaying a video signal, the image display device having a built-in battery and having a data input I / F from a mobile device operable by a single device, via the I / F When the mobile device is connected to the image display device or data is input from the mobile device, the image display device detects the connection or data input and displays the data transmitted from the mobile device on the display screen. An image display device characterized by displaying. 9. The image display device according to claim 8, wherein the screen of the image display device is divided into a plurality of parts, and input data from the mobile device is displayed on a part thereof. 9. The image display device according to claim 8, wherein a window is displayed on a screen of the image display device, and input data from the mobile device is displayed in the window. A mobile device, wherein the mobile device displays first image data on a display device included in the mobile device, and the image display device connected to the mobile device is more than the image data of the mobile device. A mobile device for displaying second image data having a large number of pixels, wherein the second image data is the same type of image data as the first image data. 12. The mobile device according to claim 11, wherein the second image data is transmitted from the mobile device to the image display device. 12. The mobile device according to claim 11, wherein the second image data is received via a network connection I / F included in the image display device. 12. The mobile device according to claim 11, wherein the first image data and the second image data are received via a network connection I / F included in the image display device. . 12. The mobile device according to claim 11, wherein the first image data is displayed on a display device included in the mobile device, and the image display device connected to the mobile device has a pixel count larger than the image data of the mobile device. When the second image data having a large amount of data is being displayed and the mobile device is operated to display the third image data, the image display device divides the screen into a plurality of images. And displaying the fourth image data of the same type as the third image data. The mobile device according to claim 11, wherein the mobile device displays first image data on a display device included in the mobile device, and the image display device connected to the mobile device includes:
When the second image data having a larger number of pixels than that of the image data of the mobile device is being displayed, if the operation is performed to display the third image data on the mobile device, the image display device displays its screen. A mobile device characterized in that a window is displayed therein and fourth image data of the same type as the third image data is displayed in the window. 17. The mobile device according to claim 15, wherein the fourth image data is transmitted from the mobile device toward image display. 17. The mobile device according to claim 15, wherein the fourth image data is received via a network connection I / F included in the image display device. 17. The mobile device according to claim 15, wherein the second image data and the fourth image data are received via a network connection I / F included in the image display device. Mobile devices. 12. The mobile device according to claim 11, wherein selection and operation of image data to be displayed on the mobile device and the image display device are performed by a user using an input device included in the mobile device. . An image display device capable of displaying a video signal, the image display device having a built-in battery and having a data input I / F from a mobile device operable by a single device, via the I / F An image display device, wherein a clock for driving a circuit for processing image data displayed by the image display device is transmitted to the mobile device.   An image interface, which transmits a clock for driving a circuit for processing image data displayed by the image display device from the image display device connected to the image interface to a mobile device also connected to the image interface. An image interface characterized by   A cradle with a built-in battery and capable of mounting a mobile device and an image display device that can operate as a single device, and a clock for driving a circuit that processes image data displayed by the image display device to the mobile device A cradle characterized by transmitting. A mobile device that can be connected to an image display device or cradle via an image interface,
A mobile device, wherein a clock and power generated from the image display device or the cradle are supplied via the image interface separately from a clock and power inside the mobile device.

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