JPH1051709A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a channel setting of an auxiliary screen by sequentially inputting a selected channel from an upper part of an auxiliary screen to a lower part or from a lower part to an upper part one by one when a favorite channel is selected by a channel key and opening a screen into a main screen from a selected auxiliary screen position in a wipe form. SOLUTION: A main screen H and three auxiliary screens S, T and U are displayed on a TV screen 16a of CRT. An arbitrary channel (program) can be preset (d) only by depressing a CH key of an input operation part. When a decision key of an input operation part is depressed in a display state (d), a control processing part takes timing so that a system is switched from an auxiliary screen position where a switch control signal is selected. Thus, a multichannel display mode is released and the screen is gradually opened in a wipe form from a selected auxiliary screen position (e). At last, only an animation picture video of a main channel is displayed on a whole S of a TV screen (f).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a multi-channel function for displaying a main screen of a television receiver and a plurality of sub-screens inside or outside the main screen.

[0002]

2. Description of the Related Art There is known a television receiver (hereinafter, referred to as a television) having a function of displaying a plurality of sub-screens inside or outside a main screen. An example of a television having such a function is disclosed in Japanese Patent Application Laid-Open No. 2-96486. The feature of the television disclosed therein is that one or more sub-screens are simultaneously displayed on one parent screen, and a sub-screen corresponding to a channel stored in a skip memory is displayed, and a channel desired by a viewer is displayed. Is selected in the menu display state.

[0003]

In the above prior art, since the sub-screen is based on the channel information stored in the skip memory, a desired program can be set from several programs. In addition, when a desired channel is selected from the sub-screens, it is difficult to understand that the selected screen is instantaneously switched and the sub-screen becomes large and becomes the main screen.

[0004] It is an object of the present invention to provide a channel selection system that can easily set a channel of a sub-screen and easily select a desired channel from the sub-screen.

[0005]

[Means for Solving the Problems] The operation of the sub-screen is selected,
Select your favorite channel with the channel key,
The selected channels are input one by one from the top to the bottom or from the bottom to the top of the sub-screen. To select the desired channel, select it with the cursor keys and press the ENTER key to select the sub-screen position. The problem was solved by opening the main screen in a wipe shape to make it easier to understand visually.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, and shows a system configuration of a television having a multi-channel function. 1 is an antenna, 2 and 3 are tuners, 4 and 5 are IF processing circuits, 6 and 7 are external input terminals, 8
Is a signal switching circuit, 9 is a main screen video signal processing circuit, 10 is a main screen synchronization signal processing circuit, 11 is a sub-screen video signal processing circuit, 12 is a sub-screen synchronization signal processing circuit, 13 is a signal switching circuit, and 14 is video. Output circuit, 15 is deflection circuit, 16 is CR
T (CRT), 17 is a multiplexer, 18 is A /
D (analog / digital) converter, 19 is a video memory control processing circuit, 20 is a video memory, 21 is a reference signal generation circuit, 22 is a D / A (digital / analog) converter,
23 is a control processing unit, 24 and 25 are channel selection processing circuits, 26 is an input operation unit, 27 is a screen display processing unit, and 28 is a memory.

In FIG. 1, a memory 28 stores various types of control information, and a control processing circuit 23 such as a microcomputer uses the control information in the memory 28 to perform input operations on an operation panel or a remote controller. Each unit is controlled in accordance with command information from the unit 26.

[0008] The received signal of the antenna 1 is supplied to tuners 2 and 3. The tuners 2 and 3 select a television signal of a channel corresponding to a channel selection signal of the channel selection processing circuits 25 and 24 controlled by the control processing unit 23, and respectively select I
After being subjected to processing such as amplification and detection in the F processing stages 4 and 5 and demodulated into a video signal, it is supplied to the signal switching circuit 8. The signal switching circuit 8 can receive video signals from external devices such as a VTR, a video disk, and a personal computer from the external input terminals 6 and 7.

The signal switching circuit 8 is controlled by the control processing unit 23, and outputs one of the video signals from the IF processing circuits 4, 5 and the video signal from the external input terminals 6, 7 to the main video M.
In addition to selecting and outputting as v, any of the video signals from the IF processing circuits 4 and 5 can be selectively output as the sub-video signal Sv.

The main video signal Mv output from the signal switching circuit 8 is processed by the main screen video signal processing circuit 9, passes through the signal switching circuit 13, is amplified by the video output circuit 14, and is supplied to the CRT 16. . The main video signal Mv output from the signal switching circuit 8 is supplied to the main synchronization circuit 10,
The horizontal and vertical synchronizing signals are separated and supplied to the deflection circuit 15 to form a deflection wave of the CRT 16.

When the power is turned on or during normal use, the signal switching circuit 8 controls the main video signal M
Selectively output only v. Therefore, on the CRT 16, only the video of the main video signal Mv is displayed on the entire TV screen. By operating the input operation unit 26, the main video signal Mv is output from either the video signal of the program of the channel selected by the tuner 2 or 3 or the output video signal of the external device from the external input terminals 6 and 7. The control processing unit 23 controls the channel selection processing circuit 24 or 25 by performing a channel selection operation with the input operation unit 26, and the tuner 3 or 2 allows the tuner 3 or 2 to display the video of the program of the desired channel. It can be selected and displayed.

What has been described above is the same as a normal use method of displaying an image of one channel on the CRT 16 in a normal television receiver. In the first embodiment, the video of the main video signal Mv (hereinafter, referred to as the main screen)
At the same time, an image of the sub-image signal Sv (hereinafter, referred to as a sub-screen) is also displayed on the TV screen of the CRT 16 at the same time. That)
The program contents can be checked. Hereinafter, such a use mode is referred to as a multi-channel display mode (in contrast, a mode for displaying only one channel image on the TV screen is hereinafter referred to as a normal display mode). The display mode will be described.

When the signal switching circuit 8 selects the video signal from the IF processing circuit 4 as the main video signal Mv in the normal display mode, the input operation section 26 is operated to switch the multi-channel display mode. When instructed, the control processing unit 2
3 controls each unit, and the signal switching circuit 8 controls the main video signal Mv
, The video signal from the IF processing circuit 5 is selected and output as the sub video signal Sv, and the tuner 3 is controlled by controlling the channel selection processing circuit 24.
To sequentially switch the selected channel. in this case,
The channel selected by the tuner 3 may include a channel to be selected by the tuner 2 (that is, a main channel), but in the following description, it is assumed that the channel is not included.

The sub-picture signal Sv output from the signal switching circuit 8 is subjected to processing such as separation of a luminance signal and a chrominance signal by a sub-picture processing circuit 11, and then a luminance signal and two chromaticity signals are outputted by a multiplexer 17. The signal is further converted to a digital signal by the A / D converter 18 and supplied to the video memory control processing circuit 19. In the video memory control processing circuit 19, under the control of the control processing unit 23, image reduction processing for reducing the vertical and horizontal dimensions of the video is performed, and these reduced image signals are separately stored in the video memory 20 for each channel. Is written to the recording area.

Then, based on the reference signal from the reference signal generation circuit 21, the video memory control processing circuit 19 reads out the image reduced video signal of each channel recorded from the video memory 20, D / A converter 22
Is converted to an analog signal. This analog signal is supplied to the demultiplexer 29, and a sub-video signal Sv 'separated into a luminance signal and two color difference signals is obtained. The sub video signal Sv ′ is supplied to the signal switching circuit 13 and is switched and combined with the main video signal Mv processed by the main video processing circuit 9 to form one video signal. This video signal is amplified by the video output circuit 14 and supplied to the CRT 16. Also at this time, the synchronization signal separated from the main video signal Mv by the main synchronization processing circuit 10 is supplied to the deflection circuit 15, so that the CRT 16 deflects in synchronization with the synchronization signal of the main video signal.

The sub video signal Sv to the video memory 20
Is written in synchronization with the sub-synchronization signal separated from the video signal Sv in the sub-synchronization signal processing circuit 12, and is synchronized with the main synchronization signal from the main synchronization signal processing circuit 10. Thus, the read timing from the video memory 20 is controlled. Therefore, although the main video signal Mv and the sub video signal Sv are asynchronous, they are synchronized with each other.

A switching control signal SW is supplied from the video memory control circuit 19 to the signal switching circuit 13. As a result, the signal switching circuit 13 selects the image-reduced sub-video signal Sv ′ from the demultiplexer 29 during the reading period from the video memory 20, and the main video signal from the main video signal processing circuit 9 in other periods. Select the signal Mv.

In this way, the video of the main video signal Mv and the sub video signal Sv 'synthesized by the signal switching circuit 13
The image displayed at T16 is shown in FIG. In the figure, it is assumed that a main screen and three sub-screens are displayed on a TV screen 16a of the CRT 16, the main screen is a channel 1 (hereinafter referred to as CH1), and the sub-screen is on the right side of the TV screen 16a. Three are arranged and displayed in the vertical direction, and are respectively CH3, CH4, and CH6 in order from the top,
The image types of the main screen and the three sub-screens are H, S, T, U
And In the upper right of the main screen and the sub screen, a screen display processing unit 2
7, the channel number (1, 3, 4, 6) is displayed. The inverted triangle mark is a symbol indicating whether the video source of the main screen or the sub-screen can be selected, and is displayed by the screen display processing unit 27 on the main screen or the sub-screen. Here, the main screen is a moving image, but one of the displayed sub-screens is a moving image and the other is a still image.
A frame image 16b is provided. The video memory 20
Can store images of four channels including one channel for scrolling in the total number of sub-screens. Normally, three channels are read out and the CRT 1 is read out.
6 is displayed.

FIG. 3 is a plan view showing an operation surface of a remote controller as a specific example of the input operation unit 26 in FIG. 1, wherein 29 is a CH button, 30 is a direction instruction button, 31 is a decision button, 32 Is a multi-button. In this figure, to set the multi-channel display mode as shown in FIG. 2, the multi button 32 is operated.

The CH button 29 of the input operation unit 26 is used to input CH8.
Is selected, the control processing unit 23 controls the video memory control processing circuit 19 to write the video of CH8 into the scroll area of the video memory 20. Next, by making the entire area of the sub-screen a still image and sequentially changing the read-out area of the video memory 20, the entire sub-picture display area on the TV screen 16a as shown in FIGS. When the scroll operation is released, the image of the new channel is displayed at the top, as shown in FIG. 2C, and the display at the bottom is displayed. The video of the channel (the oldest channel) is kicked from below.
Here, the still images of CH8, CH3, and CH4 are displayed in order from the top. Another approach is to:
You can also scroll up. In this manner, an arbitrary channel (program) can be preset simply by pressing the CH button 29 of the input operation unit 26.

When the upper part 30a or the lower part 30b of the direction instruction button 30 of the input operation unit 26 is pressed in the state of FIG. 2C, the control processing unit 23 controls the video memory control processing circuit 19, and FIG. Moves the frame image 16b to CH3. In this way, one screen can be selected from the sub-screens, and the selected screen becomes a moving image.

When the enter button 31 of the input operation unit 26 is pressed in the display state shown in FIG.
Controls the video memory control processing circuit 19 and sets the timing so that the switching control signal SW is switched from the selected sub-screen position. In this way, the multi-channel display mode is released as shown in FIG. 9E, and the selected sub-screen position is gradually wiped open in the direction of the arrow, and finally, as shown in FIG. The display returns to the normal display mode in which only the video image of the main channel is displayed on the entire TV screen 16. At this time, a similar effect may be provided by zooming up instead of the wiping operation.

The memory 28 also stores information for skipping a non-broadcast channel and sequentially selecting a broadcast channel. In FIG. 2A, no video source is displayed on the sub-screen. When is not selected, memory 2
8 can be initialized by arranging images corresponding to the channels stored in the skip memory in order from the smallest channel.

[0024]

As described above, according to the present invention,
You can preset your favorite programs one after another just by pressing the CH button on the remote control, and you can easily check other programs without disturbing the display of the program of the channel that is currently interfering.

Further, according to the present invention, at least one of the displayed sub-channels is displayed as a moving image, and the sub-channel of the moving image display can be arbitrarily selected. It is possible to check the program contents of the favorite channel easily and in more detail.

Further, according to the present invention, when the user wants to watch the sub-channel, he only has to specify the sub-picture of the sub-channel displayed on the screen, and the channel can be switched so as to wipe from the specified location. For,
The screen selection can be visually expressed, and the screen can be changed easily.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a television receiver having a multi-channel function according to the present invention.

FIG. 2 shows a specific example of multi-channel display in the embodiment shown in FIG.

FIG. 3 is a diagram illustrating an operation surface of a remote controller as a specific example of the input operation unit in FIG. 1;

[Explanation of symbols]

 2, 3 tuner 8 signal switching circuit 9 main video signal processing circuit 11 auxiliary video signal processing circuit 13 signal switching circuit 16 CRT 16a TV screen 16b frame image 18 A / D converter 19 video memory control processing circuit 20 video memory 22 D / A converter 23 Control processing unit 24, 25 Channel selection processing circuit 26 Input operation unit 27 Screen display processing circuit 28 Memory 29 CH button 30 Direction instruction button 31 Enter button

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[Procedure amendment]

[Submission date] September 9, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

A switching control signal SW is supplied from the video memory control circuit 19 to the signal switching circuit 13. Accordingly, the signal switching circuit 13 selects the image-reduced sub-video signal Sv ′ from the demultiplexer 29 during the reading period from the video memory 20, and the main video signal from the main video signal processing circuit 9 during the other periods. Select the signal Mv.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[0024]

As described above, according to the present invention,
You can preset your favorite programs one after another simply by pressing the CH button on the remote control, and you can easily check other programs without disturbing the display of the program on the channel you are watching .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

Further, according to the present invention, at least one sub-channel to be displayed appears in video, therefore the secondary channel video display can be arbitrarily selected, without interfering with the program display channel currently viewing, It is possible to easily and more precisely check the program contents of a favorite channel.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Irisawa 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Visual Information Media Division of Hitachi, Ltd. (72) Inventor Tadashi Sube 1-280 Higashi Koigakubo, Kokubunji-shi, Tokyo In-house Hitachi, Ltd.

Claims (14)

[Claims] 1. A television receiver having a multi-image function for displaying one main screen and two or more predetermined number of sub-screens of a video source selected inside or outside the main screen, Input means for selecting the video source of the sub-screen, and means for arranging the video from the video source selected by the input means while shifting the input video in the order of input, wherein the input video is a predetermined number of sub-screens The television receiver characterized in that when the video source is reached, the next time a video source is selected, the oldest video is expelled so that the newest video comes first. 2. The television receiver according to claim 1, wherein at least one of the sub-screens is a moving image and the remaining is a still image. 3. The television receiver according to claim 2, wherein a sub screen of the moving image is surrounded by a frame image. 4. The apparatus according to claim 1, further comprising: means for designating one of the images displayed on the sub-screen, and means for switching the designated image on the sub-screen to an image on the main screen. A television receiver, comprising: 5. A television receiver according to claim 4, further comprising: means for opening a designated sub-screen in a wipe form and switching to a main screen. 6. A television receiver according to claim 4, further comprising means for switching from a designated position of the sub-screen to a main screen by zooming up. 7. The method according to claim 1, wherein when no image source is selected for the sub-screen, images corresponding to the channels stored in the skip memory are arranged in order from the smallest channel. Television receiver. 8. The television receiver according to claim 1, wherein a symbol or a character string indicating whether a video source of the main screen or the sub-screen can be selected is displayed on the main screen or the sub-screen. 9. The television receiver according to claim 1, wherein the display is performed while scrolling. 10. A television receiver having a multi-video function for displaying two or more predetermined number of sub-screens with a selected video source, input means for selecting a video source of a sub-screen, Means for opening the image of the designated sub-screen in a wipe form from the position of the designated sub-screen and switching to the image of the main screen. 11. A television receiver having a multi-video function for displaying two or more predetermined number of sub-screens of a selected video source, input means for selecting a video source of a sub-screen, Means for zooming up the image of the designated sub-screen from the position of the designated sub-screen and switching to the image of the main screen. 12. The television receiver according to claim 10, wherein at least one of the sub-screens is a moving image and the rest are still images. 13. The television receiver according to claim 11, wherein at least one of the sub-screens is a moving image and the rest are still images. 14. The television receiver according to claim 13, wherein a sub screen of the moving image is surrounded by a frame image.