JPH01191583A - Multi-display device - Google Patents

Abstract

PURPOSE:To allow a user to take many kinds of information at once from videos and characters displayed on different screens by displaying character data in a main display device and a sub-display device provided on the same enclosure as the former. CONSTITUTION:In a multi-display device 11, the CRT display device 5 for video- display and the liquid crystal display device 12 for character data-display are contained in the common enclosure 13 and integrated with each other. Accordingly, video is displayed in the device 5 while characters are on the device 12 separately. As a result, from video and characters displayed on the separate screens, a user can enjoy many kinds of information at once.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-display device in which a sub-display device dedicated to displaying character data is housed in the same housing as a main display device.

[Prior Art] Teletext broadcasting in which character data is superimposed on the vertical retrace period of a video signal is broadcast using a television receiver with a built-in decoder capable of decoding character data, or by using a conventional television receiver. You can watch it by connecting a teletext receiving adapter to your television receiver. The television receiver 1 shown in FIG. 4 has a built-in decoder,
A decoder 4 arranged in parallel with the video signal processing circuit 3 that processes the television signal received by the antenna 2 decodes the character data, and the decoded character data is provided between the video signal processing circuit 3 and the CRT display device 5. By supplying the data to the adder 6, the character data can be super-displayed on a part of the video.

[Problem to be solved by the invention] The above-mentioned conventional television receiver! Cr1T used for
When the display device 5 receives a teletext broadcast, the decoded character data is super-displayed in a part of the video, so there is a problem that the quality of the video itself is degraded to some extent. Although it is possible to display the data, in that case, the video is not displayed at all, which poses the problem of not being able to view the video and text data at the same time. In addition, you can select channels and adjust the volume.
In a television receiver equipped with a so-called on-screen function that displays the selected channel, adjusted volume, etc. on the screen when using a remote control transmitter (not shown), the screen of the CRT display device 5 Since on-screen data such as character data and symbol data is displayed in a portion of the image, there are problems such as the unavoidable interference of a portion of the image by such on-screen data.

[Means for Solving the Problems] The present invention solves the above problems, and includes a main display device that displays a television signal as an image, and a main display device that is housed in the same housing as the main display device and that displays the television signal. The device is characterized by comprising a sub-display device that separates and displays character data superimposed on the screen.

[Operation] The present invention houses a main display device that displays a television signal as an image and a sub-display device that displays character data superimposed on the television signal in the same housing,
By simultaneously displaying video data and character data on different display devices, a large amount of information can be displayed at one time.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1.2 is a front view and a schematic circuit diagram showing an embodiment of the multi-display device of the present invention, respectively.

In FIG. 1, a multi-display device 11 is a CRT display device 5 which is a main display device for displaying images.
and a liquid crystal display device 12, which is a sub-display device for displaying character data, are housed in a common housing 13 and integrated.

The main display device uses a CRT display device 5, which is the mainstream of conventional television receivers.
In addition to the liquid crystal display device 12, a flat display device such as a plasma display or an EL matrix panel can be used as the sub display device.

As shown in FIG. 2, the liquid crystal display device 12 includes a decoder 4 that decodes character data sent by teletext broadcasting, and an on-screen data generator that generates on-screen data such as the selected channel and volume. A circuit 14 is connected via an adder 15. Therefore, when a teletext broadcast is received, the character data is not super-displayed on the CRT display device 5, which is the main display device, to avoid deteriorating the quality of the video due to the character data, and the decoder 4 decodes the data. The displayed character data can be separately displayed on the liquid crystal display device 12.

In addition, on-screen data generated by the on-screen data generation circuit 14 when changing the selected channel or adjusting the volume is also displayed on the liquid crystal display device 12, so on-screen display was conventionally taken for granted. The CRT display device 5 can be completely converted into a display device exclusively for video, and the on-screen display that is a hindrance to the CRT display device 5 can be switched to an off-screen display.

As described above, since the multi-display device fill is configured to display character data on the liquid crystal display device 12 provided in the same housing 13 as the CRT display device 5, the quality of the image displayed on the CRT display device 5 can be improved. However, the text data can be prevented from being damaged by text data, and the text data can include not only the decoded output of teletext broadcasting but also on-screen display characters indicating the contents of remote commands, etc. is CR
It is possible to display the text separately on the T display device 5 and the text on the liquid crystal display device 12, and it is possible to obtain a large amount of information at once from the images and text displayed on separate screens.

In the above embodiment, the multi-display device 11 which is a combination of the CRT display device 5 and the liquid crystal display device 12 is used, but in the case of the multi-display device 2L shown in FIG. By using the device 22, it is also possible to configure both the main and sub devices with liquid crystal display devices. Furthermore, the main and sub display devices may be other than a liquid crystal display device, such as a plasma display or an EL display device.
It is also possible to configure it with a flat display device such as a matrix panel.

[Effects of the Invention] As explained above, the present invention has a configuration in which character data is displayed on the sub display device provided in the same housing as the main display device, so that the quality of the image displayed on the main display device is improved. The image can be prevented from being damaged by text data, and the text data can include not only the decoded output of teletext broadcasting but also on-screen display characters, etc. can be displayed separately on a sub-display device, and has excellent effects such as being able to obtain a large amount of information at once from images and text displayed on separate screens.

[Brief explanation of the drawing]

1 and 2 are a front view and a schematic circuit diagram showing an embodiment of the multi-display device of the present invention, and FIG.
FIG. 4 is a front view showing another embodiment of the multi-display device of the present invention, and FIG. 4 is a schematic circuit diagram showing an example of a television receiver using a conventional CRT display device. 5., CRT display device, 11.21°9. Multi-display device, 12.22. ,. Liquid crystal display device, +3. ,, housing.

Claims (1)

[Claims] A multi-display device consisting of a main display device that displays a television signal as an image, and a sub-display device that is housed in the same housing as the main display device and that separates and displays character data superimposed on the television signal.