JP2008311768A - Video image display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a video image display which does not a user by preventing a predetermined state from being displayed even if input of a signal from an external apparatus stops for a moment. <P>SOLUTION: The control section of a television broadcast receiver has an external input display section for displaying an image based on an HDMI signal inputted from an external apparatus, and a state display section for displaying a "no signal" image on a display screen when the HDMI signal stops during control by the external input display section. The state display section performs signal check (S13) when a predetermined time elapses (S12:YES) after the HDMI signal stops (S11:YES). If the HDMI signal is not inputted (S14:NO), the "no signal" image is displayed on the display (S15). If the HDMI signal is inputted (S14:YES) and the external input display section succeeds in authentication processing (S21:YES), the "no signal" image is not displayed (S11) without annoying the user. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video display device having a function of displaying an image in accordance with an external input signal input via an HDMI (High-Definition Multimedia Interface) cable.

  As a video display device having a function of displaying an image in accordance with an external input signal input from an external device via an HDMI (High-Definition Multimedia Interface) cable, the image is displayed in accordance with the external input signal. In some cases, when an external input signal is not input for some reason, a predetermined status is displayed on the display screen. For example, by displaying a status display using characters such as “No Signal” as an OSD (On-Screen Display) display together with the image on the display screen, the user cannot display the image because the external input signal is interrupted. Can be informed.

  By the way, in such a video display device, for example, when an operation for starting an external signal output in an external device is performed, an external input signal input from the external device has a length of about 1/10 second, for example. In some cases, it may be input again immediately after the interruption. Thus, even if the input of the external input signal is interrupted for a moment, the time during which the image is not displayed due to the interruption of the external input signal is relatively short, so that the user hardly cares. However, conventionally, there is a case where OSD display is performed even when input of an external input signal is interrupted for a moment as described above. In this case, there is a problem that the user feels annoyance such as annoyance. there were.

Here, Patent Document 1 extracts display related information included in a digital signal received via an HDMI connector, and automatically sets the display mode of the display according to the display related information. There is shown an image display apparatus that can be set in accordance with a user instruction and can reproduce a video image that places importance on the user's preference. Further, in Patent Document 2, when an OSD display request is received from a user, an OSD request including setting status information is transmitted to a DVD playback apparatus when an HDMI video signal is received. An AV system that displays on a display device based on an OSD signal generated based on setting status information is shown. However, these Patent Documents 1 and 2 do not disclose an effective solution for the above problem.
JP 2006-108750 A JP 2006-187027 A

  The present invention has been made in view of the above problems, and even if the input of an external input signal from an external device via an HDMI cable is interrupted for a moment, the user is uncomfortable without displaying a predetermined status display. An object of the present invention is to provide a video display device that does not make the user remember.

  In order to achieve the above object, the invention of claim 1 includes a display screen, a drive unit for displaying an image on the display screen, and a terminal unit connectable to an external device via an HDMI (High-Definition Multimedia Interface) cable. And when an external device is connected to the terminal unit and an external input signal is input from the external device, after performing an authentication process with the external device, the drive unit is connected based on the external input signal. During the control of the drive unit by the external input display means to be controlled and the external input display means, when the authentication process is being performed or when the external input signal is not input, a predetermined status display is displayed on the display screen. And a control unit having a status display means for displaying, wherein the status display means has an external input when the external input signal is input to the control unit. When the input signal is interrupted until the elapse of the preset time period, it is made in a standby state not to display the predetermined status.

  According to a second aspect of the present invention, in the first aspect of the invention, the state display means is in the standby state, and when the predetermined time has elapsed, if the external input signal is not input to the control unit, the display screen is displayed. To display the predetermined state display.

  According to a third aspect of the present invention, in the second aspect of the present invention, the status display means enters the standby state, and the authentication process is performed when the external input signal is input to the control unit before the predetermined time elapses. If the authentication process is not successful, the predetermined status display is displayed on the display screen.

  According to the first aspect of the present invention, when the input of the external input signal to the control unit is interrupted, the predetermined state display is not displayed until the predetermined time has elapsed, so that the external input signal is input from the external device. The state display is not displayed on the display screen while the image is interrupted for a moment, and the user is not made uncomfortable.

  According to the invention of claim 2, since a predetermined state display is displayed when a predetermined time has elapsed since the input of the external input signal to the control unit is interrupted, the input of the external input signal from the external device is continued. The status display can be displayed only when it is interrupted, and the user can be informed that the external input signal is interrupted and the image cannot be displayed.

  According to the invention of claim 3, the authentication process is performed until a predetermined time elapses after the input of the external input signal to the control unit is interrupted, and if the authentication process is not successful, a predetermined status display is displayed. Therefore, when the input of the external input signal from the external device is interrupted for a moment and the input is still unstable after that, it is possible to inform the user that the image cannot be displayed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a television broadcast receiver (video display device; hereinafter referred to as receiver) according to the present embodiment. The receiver 1 controls the operations of a display screen 11 that is, for example, a liquid crystal display panel or a plasma display panel, a drive unit 12 that drives the display screen 11, a speaker 13 that can output sound, and each unit of the receiver 1. A control unit 14, a tuner 16 that is connected to an external antenna and receives a desired television broadcast program received by the antenna, and a terminal unit that is provided so as to be exposed outside the housing of the receiver 1. 17, and a receiving unit 18 that receives an operation signal transmitted from the external remote controller 2. The receiver 1 is based on the control by the control unit 14, for example, a television broadcast program selected by the tuner 16 or an image / audio input from an external input device connected to the terminal unit 17 as described later. Can be viewed through the display screen 11 and the speaker 13. In the present embodiment, the terminal unit 17 has an HDMI connector corresponding to the HDMI (High-Definition Multimedia Interface) standard. The terminal unit 17 is connected to an external device such as a DVD recorder 5 via the HDMI cable 3.

  The control unit 14 includes, for example, a CPU, a memory, an image processing circuit, a sound processing circuit, and the like. For example, when the DVD recorder 5 is connected to the terminal unit 17 as an external device in the control unit 14 and an HDMI signal (external input signal) including a video signal and an audio signal is input from the DVD recorder 5, the control unit 14 An external input display unit (external input display means) 15a for controlling the drive unit based on the signal is provided. In addition, the control unit 14 displays an OSD (On-Screen Display) display together with an image displayed on the display screen 11 such as the number of a television broadcast station that is currently viewable, program / image information, and the like. (Status display means) 15b.

  In the present embodiment, the external input display unit 15a is connected to the terminal unit 17 when an external device such as a DVD recorder 5 is connected, and when an HDMI signal is input from the connected external device, the DVD recorder is based on the HDMI standard. An authentication process is performed with 5 or the like, and an image based on the HDMI signal is controlled to be viewable after the authentication is successful. This authentication process usually takes about 2 seconds, for example. When the control based on the HDMI signal is performed, the state display unit 15b displays no signal (predetermined on the display screen 11) while the authentication process is being performed or when the HDMI signal is not input from the DVD recorder 5 or the like. (Status display) 20 is displayed.

  FIG. 2 shows an example of the receiver 1 in a state where the no-signal display 20 is displayed on the display screen 11. As the no-signal display 20, for example, a character display such as “No Signal” is set in advance to indicate a state in which image display or audio output based on the HDMI signal cannot be performed. By displaying the no-signal display 20, the user can know that no image display or the like is being performed because an HDMI signal is not input from an external device such as the DVD recorder 5. Or the like so that the HDMI signal can be output and the connection to the terminal unit 17 of the DVD recorder 5 or the like can be reconfirmed.

  By the way, in the present embodiment, the status display unit 15b does not immediately display the no-signal display 20 when the input of the HDMI signal is interrupted when the HDMI signal is input from the DVD recorder 5 or the like. It is configured. Hereinafter, the control performed by the control unit 14 in such a case will be described with reference to FIG.

  First, when an HDMI signal is input and control is performed by the external input display unit 15a, if the input of the HDMI signal is continued, the drive unit 12 and the like are controlled based on the HDMI signal ( S11: NO). At this time, if the input of the HDMI signal is interrupted (S11: YES), the state display unit 15b displays the no-signal display 20 until a predetermined time (for example, about 1 second) elapses after the input is interrupted. It will be in the standby state which is not displayed (S12: NO). When the predetermined time has elapsed (S12: YES), the control unit 14 performs a signal check to determine whether the HDMI signal is input again (S13, S14). If the HDMI signal is not input (S14: NO), the status display unit 15b performs the OSD display of the no-signal display 20 on the display screen 11, and the user is not input the HDMI signal and cannot perform the image display or the like. Is notified (S15).

  On the other hand, if an HDMI signal is input at the time of the signal check (S14: YES), the external input display unit 15a performs an authentication process (S20). At this time, if the HDMI signal is continuously input and the authentication process ends normally and the authentication is successful (S21: YES), the external display is not performed without displaying the no-signal display 20 by the status display unit 15b. Control based on the HDMI signal is performed by the unit 15a (S11). If the authentication process is not successful (S21: NO), since the image display based on the HDMI signal cannot be performed, the no-signal display 20 is OSD displayed by the status display unit 15b (S22).

  As described above, in the present embodiment, the no-signal display 20 is displayed only when the input of the HDMI signal from the external device such as the DVD recorder 5 continues for a predetermined time, and the input of the HDMI signal is instantaneously performed. Since the no-signal display 20 is not displayed on the display screen 11 during the interruption, the user does not feel uncomfortable, and the no-signal display 20 can be shown to the user when necessary. . In addition, since the authentication process is performed before the predetermined time elapses after the input of the HDMI signal is interrupted and the authentication process is not successful, the no-signal display 20 is displayed. When the input of the HDMI signal is interrupted and the input of the HDMI signal is still unstable after that, the user can be informed that the image display or the like cannot be performed.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible suitably in the range which does not change the meaning of invention. For example, the receiver may include not only the terminal portion 17 of the HDMI connector but also an input terminal based on another standard. Further, the predetermined status display displayed when the HDMI signal is interrupted is not limited to the no-signal display 20 and may be an icon display or the like. Furthermore, the present invention is not limited to a television broadcast receiver, and can also be applied to a video display device that does not have a tuner or the like, or a projector that displays an image by projecting the image on a screen.

The block diagram which shows an example of the television broadcast receiver which concerns on one Embodiment of this invention. The perspective view which shows the example of a display of the no signal display of the said receiver. The flowchart which shows an example of operation | movement of the control part of the said receiver.

Explanation of symbols

1 Television broadcast receiver (video display device)
3 HDMI cable 5 DVD recorder (external device)
DESCRIPTION OF SYMBOLS 11 Display screen 12 Drive part 14 Control part 15a External input display part (external input display means)
15b Status display section (status display means)
17 Terminal 20 No signal display (predetermined status display)

Claims (3)

A display screen;
A drive unit for displaying an image on the display screen;
A terminal portion connectable to an external device via an HDMI (High-Definition Multimedia Interface) cable;
When an external device is connected to the terminal unit and an external input signal is input from the external device, an authentication process is performed with the external device, and then the drive unit is controlled based on the external input signal. During the control of the drive unit by the external input display means and the external input display means, when the authentication process is being performed or when the external input signal is not input, a predetermined status display is displayed on the display screen A video display device comprising a control unit having status display means,
The state display means displays the predetermined state until a predetermined time elapses when input of the external input signal is interrupted when the external input signal is input to the control unit. A video display device that is in a standby state in which it is not displayed.   The state display means displays the predetermined state display on the display screen if the external input signal is not input to the control unit when the predetermined time has elapsed after entering the standby state. The video display device according to claim 1.   If the authentication process is not successful when the external input signal is input to the control unit and the authentication process is performed before the predetermined time elapses, the status display means displays the display. The video display apparatus according to claim 2, wherein the predetermined status display is displayed on a screen.

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