JP2007251418A - Video display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable on-screen display indication satisfactorily without impeding a main video display. <P>SOLUTION: When a video signal being received or input is displayed on a display section, a sub-video image using characters or figures related to the display concerned is generated in a sub-video image processing section. In the case of a first display mode, the sub-video image generated in the sub-video image processing is displayed after being composed with the output video image from a main video image processing section [display shown in FIG. 4(a)], while in the case of a second display mode, a video signal for displaying the sub-video image is output to the outside, without composing the sub-video image generated in the sub-image processing section with the output video image from the main video image processing section [in FIG.4(b)]. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a video display device suitable for application to a television receiver.

  In a television receiver, in addition to a main video such as a video received by a tuner, various videos such as guidance related to the video display are simultaneously displayed. For example, the reception channel and input type display, volume display during volume adjustment, display of image quality and adjustment status during sound quality adjustment, and other various menu screen displays are superimposed (synthesized) on the display video in characters and graphics. Is displayed. These displays are also referred to as on-screen display displays (OSD displays).

The on-screen display display can be turned on and off by operating a remote controller attached to the television receiver, for example.
Japanese Patent Laid-Open No. 2003-333359

  Since the conventional on-screen display is basically displayed so as to be superimposed on the main video, there is a problem that it becomes difficult to see the main video if the display is present. Japanese Patent Application Laid-Open No. 2005-228867 describes that individual video signals are supplied from one video signal source (a base unit with a built-in tuner) to two different receivers, but simply to two different receivers. This is to display different video programs and is not a technique for solving the problem of on-screen display.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to satisfactorily perform video display such as on-screen display display without interfering with main video display.

  According to the present invention, when a received or input video signal is displayed on a display unit, a sub-video with characters or graphics related to the display is generated by a sub-video processing unit, and in the first display mode, a sub-video is generated. The sub video generated by the processing unit is combined with the output video of the main video processing unit and displayed, and in the second display mode, the sub video generated by the sub video processing unit is combined with the output video of the main video processing unit. Without this, a video signal for displaying the sub-video is output to the outside.

  Thus, when on-screen display display is performed by a single display device, the first display mode is set so that the main image is synthesized like the conventional general display device. The on-screen display is performed with. By setting the second display mode, no other video is synthesized with the main video, and only the video for on-screen display is displayed on a separate display device.

  According to the present invention, when a separate display device is prepared, the separate display device is used to display a sub-video such as an image for on-screen display, and the display unit on the main body side It is possible to display only the main video, and it is possible to obtain an effect that the main video display can be favorably displayed without obstructing. In addition, when there is no separate display device, it is possible to display an image that combines the main image similar to the conventional image with an on-screen display image on the display unit on the main body side, and according to the use form It has an effect that an appropriate display form can be selected.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a block diagram showing a system configuration example of this example. In this example, a system is constituted by a television receiver 10 as a video display device and a remote controller 30 for remotely controlling the television receiver 10.

  First, the configuration of the television receiver 10 will be described. The television receiver 10 receives a broadcast signal of a predetermined channel by a tuner 12 to which an antenna 11 is connected, supplies the received video signal to the video processing unit 13, and obtains a video signal for display. I do. It is also possible to supply a video signal obtained from the outside to the video input terminal 14 to the video processing unit 13 for processing.

  The video signal output from the video processing unit 13 is supplied to the display processing unit 17 via the synthesizing unit 15 and a driving process for displaying the video on the display panel 18 is performed. The combining unit 15 performs processing for combining (superimposing) the video signal output from the on-screen display processing unit 16 on the video signal output from the video processing unit 13. The on-screen display processing unit 16 is a processing unit that generates a video signal (sub-video signal) for performing guidance display related to a display video, such as a state of the receiver, using characters or graphics. The generation process in the on-screen display processing unit 16 is performed under the control of the control unit 20, and a memory (not shown) that stores character data such as characters and figures to be displayed is prepared.

  The on-screen display processing unit 16 in this example outputs a sub-video signal to the synthesizing unit 15 and displays it on the display panel 18 included in the television receiver 10, and supplies it to the wireless transmission / reception unit 21. , Processing for wireless transmission to the outside is possible. The process to be displayed on the display panel 18 and the process to be wirelessly transmitted to the outside are selectively performed according to the operation mode set in the control unit 20. Details of this operation mode and selection processing will be described later.

  The wireless transmission / reception unit 21 is connected to the built-in antenna 22 and is a transmission / reception unit that performs wireless communication based on, for example, IEEE (Institute of Electrical and Electronic Engineers) 802.11 standard. As the wireless communication here, for example, wireless transmission using a 2.4 GHz band is performed. A remote controller 30 is prepared as a partner with which the wireless transmission / reception unit 21 communicates wirelessly, and the control unit 20 in the television receiver 10 exchanges bidirectional control data with the remote controller 30 side so that the remote controller 30 can perform remote communication. Operation control based on a command from the controller 30 is performed. The controller 20 is supplied with operation information from the key 19 and performs an operation based on the key operation. The configuration of the television receiver 10 so far has been described mainly with respect to the video processing system, and the configuration of the audio processing system is omitted.

  Next, the configuration of the remote controller 30 will be described. The remote controller 30 includes a key 31 and an operation command for the key 31 is supplied to the control unit 32. The control unit 32 supplies a control command for controlling the operation of the television receiver 10 to the wireless transmission / reception unit 33 based on the operation command, and a wireless signal including the control command from the antenna 34 connected to the wireless transmission / reception unit 33. To send. As the key 31, for example, an OSD cut key 31a (see FIG. 4) is provided in addition to a channel designation key, a volume key, a menu screen operation key, and the like of a television receiver.

  The remote controller 30 of this example includes a display panel 37 constituted by a liquid crystal display panel having a relatively small display size, and can display an image. The video displayed on the display panel 37 is wirelessly transmitted from the television receiver 10 side. That is, when the video signal is received by the wireless transmission / reception unit 33, the video signal is sent to the data processing unit 35, the display video signal is demodulated, and the demodulated video signal is supplied to the display processing unit 36. Thus, display processing for driving the display panel 37 is performed. In this example, the video that is wirelessly transmitted from the television receiver 10 and displayed on the display panel 37 is a video that is output from the on-screen display processing unit 16. For example, the remote controller 30 stands by so that the operation command of the key 31 can be transmitted at all times, and the circuit block related to the display on the display panel 37, unless a video signal is supplied from the television receiver side. Power control may be performed so that the power is turned off. Further, the display panel 37 may be a so-called touch panel that detects contact with a finger or a pen, and a part of the key 31 may also be used.

  Next, processing for displaying an image output from the on-screen display processing unit 16 in the system configuration configured as described above will be described. As the video display mode for the on-screen display output from the on-screen display processing unit 16, in this example, two modes, a normal display mode and an OSD display cut mode, are prepared. Is registered in the control unit 20 in the television receiver 10. This registered mode can be changed by operating the OSD cut key 31 a prepared in the remote controller 30.

  The flowchart of FIG. 2 is a diagram showing an example of this change process. If it demonstrates according to the flowchart of FIG. 2, the control part 20 will judge whether the operation command corresponding to operation of the OSD cut key 31a exists from the signal received with the radio | wireless transmission / reception part 21 (step S11). If it is determined that an operation command corresponding to the operation of the OSD cut key 31a has been received, it is determined whether or not the currently set mode is the OSD display cut mode (step S12). If the currently set mode is the OSD display cut mode, the operation mode is changed to the normal display mode (step S13). If the currently set mode is not the OSD display cut mode (that is, the normal display mode), the operation mode is changed to the OSD display cut mode (step S14).

  The flowchart of FIG. 3 is a diagram illustrating a processing example when the on-screen display processing unit 16 of the television receiver 10 generates some display video. If it demonstrates according to the flowchart of FIG. 3, the control part 20 will judge whether it is a timing which performs an on-screen display display (step S21), and if it is the timing to display, the video display mode for present on-screen displays will be changed. It is determined whether the OSD display cut mode or the normal display mode is selected (step S22). Here, in the OSD display cut mode, the on-screen display display video signal generated by the on-screen display processing unit 16 is wirelessly transmitted from the wireless transmission / reception unit 21, and the synthesis unit 15 synthesizes the video signal. (Step S23). In the normal display mode, the on-screen display display video signal generated by the on-screen display processing unit 16 is supplied to the synthesizing unit 15 and synthesized with the video signal output from the video processing unit 13. (Overlapping) and wireless transmission of the video signal for on-screen display display is not performed (step S24).

  When wireless transmission is performed in step S23, the transmitted video signal is received by the remote controller 30 and displayed on the display panel 37.

  FIG. 4 is a diagram showing a display example when the display processing is performed in this way. FIG. 4A shows a display example in the OSD display cut mode, and FIG. 4B shows a display state in the normal display mode. As shown in FIG. 4, the remote controller 30 separate from the television receiver 10 is provided with a display panel 37 in addition to a plurality of keys 31 for operating the television receiver. In this example, an OSD cut key 31 a is prepared as one of the keys 31. When the normal display mode is set in the mode setting based on the flowchart of FIG. 2 by operating the OSD cut key 31a, the display panel 18 of the television receiver 10 is displayed on the display panel 18 as shown in FIG. 4B. On-screen display is performed. In this display state, display is performed using a part of the display area 18a of the main video currently being displayed. The display example in FIG. 4B is an example in which on-screen display display is performed using characters and graphics for adjusting the display image quality on the display panel 18. In this state, nothing is displayed on the display panel 37 of the remote controller 30. In this non-display state, the power of the circuit block for displaying on the display panel 37 may be turned off.

  When the OSD display cut mode is set in the mode setting based on the flowchart of FIG. 2 by operating the OSD cut key 31a, the display of the television receiver 10 is displayed as shown in FIG. 4A. Only the main video is displayed on the panel 18, and an on-screen display display 37 a is performed on the display panel 37 of the remote controller 30. Since only the main video is displayed on the television receiver 10 side in this way, the main video display may be difficult to see in the on-screen display display for displaying various guidance information and adjustment information. And a good display form is maintained. Since the on-screen display display itself is displayed on the remote controller 30 that is likely to be held by the user who performs the operation, the display content can be easily confirmed. For example, as shown in FIG. 4A, when the adjustment menu screen is displayed and the adjustment operation is performed, the adjustment item is selected and adjusted while checking the adjustment item and the adjustment amount at the user's hand. The quantity setting operation can be performed, and the workability of the adjustment work is greatly improved.

  In the example of FIG. 1, the wireless transmission between the television receiver 10 and the remote controller 30 is performed based on the IEEE 802.11 standard. However, infrared signal transmission, Bluetooth ( Other transmission methods such as trademark) may be used. In this case, transmission of control commands from the remote controller 30 to the television receiver 10 is performed by infrared transmission, and transmission of video signals from the television receiver 10 to the remote controller 30 conforms to the IEEE 802.11 standard. A plurality of different transmission schemes may be combined so that the wireless transmission is performed.

  In the description so far, all on-screen display displays are switched according to the mode setting. However, even when the OSD display cut mode is set, some on-screen display displays may be television-received. It may be displayed on the display panel 18 of the machine 10. For example, reception channel number display and volume display during volume adjustment are performed on the display panel 18, and relatively complicated displays such as menu screens and various adjustments are performed only on the display panel 37 of the remote controller 30. May be.

Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a block diagram showing a system configuration example of this example, and FIG. 6 is a perspective view showing an example of the apparatus shape. In this example, a system is constituted by a television receiver 50 as a video display device, a remote controller 70 for remotely controlling the television receiver 50, and a monitor receiver 80 connected to the television receiver 50. It is a thing.

  First, the configuration of the television receiver 50 will be described. In the television receiver 50, a tuner 52 connected to an antenna 51 receives a broadcast signal of a predetermined channel, supplies the received video signal to the video processing unit 53, and obtains a video signal for display. I do. It is also possible to supply a video signal obtained from the outside to the video input terminal 54 to the video processing unit 53 for processing.

  The video signal output from the video processing unit 53 is supplied to the display processing unit 57 via the synthesizing unit 55, and drive processing for displaying video on the display panel 58 is performed. The synthesizer 55 performs a process of synthesizing (superimposing) the video signal output from the on-screen display processor 56 on the video signal (main video signal) output from the video processor 53. The on-screen display processing unit 56 is a processing unit that generates a video signal (sub-video signal) for performing guidance display related to a display video, such as a state of the receiver, using characters or graphics. The generation process in the on-screen display processing unit 56 is performed under the control of the control unit 60, and a memory (not shown) storing character data such as characters and figures to be displayed is prepared.

  The on-screen display processing unit 56 of this example outputs a sub-video signal to the synthesizing unit 55 side, and supplies it to the changeover switch 62 side in addition to processing to display on the display panel 58 provided in the television receiver 50. The configuration is also possible. The changeover switch 62 is a changeover switch that switches between the main video signal output from the synthesis unit 55 and the sub-video signal output from the on-screen display processing unit 56, and the switching is controlled by the control unit 60. The video signal selected by the changeover switch 62 is output from the video output terminal 63.

  The control unit 60 that controls the operation of the television receiver 50 is configured to be supplied with a control command received by the infrared light receiving unit 61, and configured to perform operation control based on the command from the remote controller 70. The mode setting related to the on-screen display display described later is also configured to be controlled and set by the control unit 60. Note that the configuration of the television receiver 50 up to this point has been described mainly with respect to the video processing system, and the configuration of the audio processing system is omitted.

  The remote controller 70 includes a key 71 for operating the television receiver, a control unit 72 for inputting information on the key operation, and an infrared transmission unit 73 for transmitting a control command output from the control unit 72 as an infrared signal. Is provided. As one of the keys 71, an OSD cut key 71a (FIG. 6) is provided.

  The video signal output from the video output terminal 63 of the television receiver 50 is supplied to a monitor receiver 80 connected by a cable or the like. The monitor receiver 80 is configured to supply a video signal input to the video input terminal 81 to the display processing unit 82 and perform drive processing for display on the display panel 83. The display panel 83 is configured by a relatively small liquid crystal display panel or the like. In conjunction with the display on the monitor receiver 80, the control unit 60 side of the television receiver 50 may be able to turn on / off the monitor receiver 80.

  For example, as shown in FIG. 6, the monitor receiver 80 is installed in the vicinity of the television receiver 50, and the display on the display panel 58 of the television receiver 50 and the display on the display panel 83 of the monitor receiver 80 are displayed. Are preferably visible to the user at the same time. In the installation state as shown in FIG. 6, the television receiver 50 is operated using the remote controller 70.

  With this system configuration, in this example, the control unit 60 that controls the operation of the television receiver 50 controls the switching of the selector switch 62 according to the mode setting related to the on-screen display display. At the same time, the output from the on-screen display processing unit 56 to the combining unit 55 is controlled. Specifically, when on-screen display display is performed in a state where the normal display mode is set, an on-screen display display video signal is output from the on-screen display processing unit 56 to the combining unit 55 for combining. The unit 55 combines the main video signal with the video signal for on-screen display display, and the display panel 58 displays the video with the combined video for on-screen display display. Further, the output of the synthesizing unit 55 is selected by the changeover switch 62. When the display on the monitor receiver 80 is turned on, the same video as the display panel 58 of the television receiver 50 is displayed. In the normal display mode, the display on the monitor receiver 80 may be controlled to be always off.

  When on-screen display display is performed in the state where the OSD display cut mode is set, the on-screen display processing unit 56 does not output a video signal for on-screen display display to the combining unit 55, and the display panel In 58, only the main video is displayed. Then, the output of the on-screen display processing unit 56 is selected by the changeover switch 62. When the display on the monitor receiver 80 is turned on, only the video for on-screen display display is displayed on the monitor. It is displayed on the display panel 83 of the receiver 80. In the OSD display cut mode, the display on the monitor receiver 80 may be turned on only when on-screen display display is performed, and may be controlled to be turned off in other cases.

  By performing such on-screen display display processing, as in the case of the first embodiment, the main video display can be seen in the on-screen display display for displaying various guidance information and adjustment information. A good display form is maintained without becoming difficult. In the case of the present embodiment, a general remote controller having no display unit can be used as the remote controller, and the versatility of the system is high.

  In the first and second embodiments described above, channel number display, volume display, various menu screen displays, and the like are exemplified as on-screen display display. However, in a video display device such as a television receiver, Various displays for guidance generated in the display device can be applied to the on-screen display display here. For example, electronic program display for displaying a program guide may be performed by the same processing.

It is a block diagram which shows the system configuration example by the 1st Embodiment of this invention. It is a flowchart which shows the example of a mode change process by the 1st Embodiment of this invention. It is a flowchart which shows the example of an on-screen display display process by the 1st Embodiment of this invention. It is explanatory drawing which showed the example of a display by the 1st Embodiment of this invention. It is a block diagram which shows the system configuration example by the 2nd Embodiment of this invention. It is explanatory drawing which shows the structural example by the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Television receiver, 11 ... Antenna, 12 ... Tuner, 13 ... Video processing part, 14 ... Video input terminal, 15 ... Composition part, 16 ... On-screen display processing part, 17 ... Display processing part, 18 ... Display panel , 19 ... key, 20 ... control unit, 21 ... wireless transmission / reception unit, 22 ... antenna, 30 ... remote controller, 31 ... key, 31a ... OSD cut key, 32 ... control unit, 33 ... wireless transmission / reception unit, 34 ... antenna, 35 ... Data processing unit, 36 ... Display processing unit, 37 ... Display panel, 50 ... Television receiver, 51 ... Antenna, 52 ... Tuner, 53 ... Video processing unit, 54 ... Video input terminal, 55 ... Composition unit, 56 ... On-screen display processing unit, 57 ... Display processing unit, 58 ... Display panel, 59 ... Key, 60 ... Control unit, 61 ... Infrared light receiving unit, 62 ... Switching switch 63 ... Video output terminal, 70 ... Remote controller, 71 ... Key, 71a ... OSD cut key, 72 ... Control unit, 73 ... Infrared transmitter, 80 ... Monitor receiver, 81 ... Video input terminal, 82 ... Display processing Part, 83 ... display panel

Claims (4)

A main video processing unit for processing received or input video signals;
A display unit for displaying the video processed by the main video processing unit;
A sub-picture processing unit for generating sub-pictures by characters or figures related to display on the display unit;
The display on the display unit is controlled, and in the first display mode, the sub video generated by the sub video processing unit is combined with the output video of the main video processing unit and displayed. In this case, the video display device outputs a video signal for displaying the sub video without synthesizing the sub video generated by the sub video processing unit with the output video of the main video processing unit. The video display device according to claim 1,
A wireless transmission unit that wirelessly transmits a video signal for displaying the sub-video;
A video display device, wherein the transmission output of the wireless transmission unit is displayed on a separate display device. The video display device according to claim 1,
The first display mode and the second display mode are switched by transmission of a predetermined control command from a remote controller that remotely controls the video display device. The video display device according to claim 1,
The video display apparatus, wherein the sub-video is a character or graphic video for adjusting a display state on the display unit.

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