JP2000209456A - Remote controller for television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote controller by which the inputted contents of plural channels can be confirmed by a simple operation. SOLUTION: This remote controller is provided with an operation means for setting a display mode for displaying the prescribed number of sub video images in a display area in one column at the side part of a screen 16a as soon as a main video image is displayed on the screen 16a as shown in (a), an operation means for scrolling the column of the sub video images in the array direction as shown in (a) and (b) and an operation means for specifying a desired sub video image, replacing it with the main video image and displaying it as shown in (c) and (d).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly, to a remote control for a television receiver that can simultaneously display television images of a plurality of channels on the same television screen.

[0002]

2. Description of the Related Art Conventionally, in a television receiver, images of a plurality of channels (television stations) are simultaneously displayed on the same screen so that it is possible to know what kind of program is being broadcast on another channel. The technology is known. As an example, there is a method using a PinP or PoutP method.
One channel can be received, and a program of one channel desired to be viewed over substantially the entire display screen (hereinafter, simply referred to as a TV screen) of the television receiver is displayed as a parent screen, and a program of the other channel different from this is displayed. Is reduced and displayed on a part of the TV screen as a child screen. According to this, it is possible to simultaneously watch two programs desired to be viewed.

[0003] Of course, the channel of the parent screen and the child screen can be changed, and the channel of the parent screen and the child screen can be changed.

On the other hand, a technique has been proposed in which images of all receivable channels are simultaneously displayed on the same TV screen so that the program contents of each channel can be simultaneously checked. As an example, Japanese Patent Publication No. 6-34502
The technique described in Japanese Patent Application Laid-Open Publication No. H11-163703 selects all channels in order using one tuner, and as shown in FIG.
The video of each channel is arranged and displayed on the screen 100. Here, it is assumed that 9 channels are displayed.

Then, for example, CH (channel) 1 →
CH4 → CH7 → CH2 → CH5 → CH8 → CH3 → C
As shown in the order of H6 → CH9 → CH1 →, the display images of these nine channels are switched in order to change the display content along with the moving image. In order to cause flickering in the entire image and to make all nine displayed images flicker and very difficult to see, each of the displayed images is slowly changed by a technique of scrolling.

FIG. 16 is a diagram showing this scrolling. Referring to one channel, when switching from an image displaying a circle to an image displaying a triangle, FIGS. 16 (a), (b), (C), (d), (e), (f)
As shown in the order, the displayed circle image is replaced with the next triangle image in order from the top. As a result, since each display image switches slowly over time, flicker does not occur.

[0007] According to this, the program contents of all the channels can be checked at the same time, and by specifying the channel to be viewed, the entire TV screen 100 is replaced with the specified channel instead of the display shown in FIG. Only the video will be displayed.

The technique disclosed in Japanese Patent Publication No. Hei 6-34502 described above performs scrolling in the vertical direction as described above. There is a technique described in JP-A-34503.

[0009]

By the way, the above Pin
In the display of the parent-child screen by P or PoutP, only programs of two channels can be viewed at the same time. Of course, when it is desired to check a program on another channel, the channel of the sub-screen does not have to be switched, but a different operation button has to be operated for each channel, and the operation is troublesome. Also, as described in Japanese Patent Publication No. Hei 6-34502, if the images of all the channels are displayed together, the contents of all the programs can be checked at the same time. When the user wants to check what program is being broadcast on another channel while the user is in the program, the display as shown in FIG. 15 is performed, and the program that has been watched is interrupted. Of course, although the video of this program is also displayed as one of the nine display videos shown in FIG. 15, it is not a complete video, but an unnatural video that changes by scrolling at regular time intervals. Is not enough.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and in a television receiver capable of inputting images of a plurality of channels, the image of a program on the channel being watched is not particularly damaged and any other channel can be input. It is an object of the present invention to provide a remote control for a television receiver which enables the user to confirm the program contents by a simple operation.

[0011]

In order to achieve the above object, the present invention provides one of a plurality of input channels.
At the same time as displaying the video of one channel on the screen as the main video, the video of a predetermined number of channels among the plurality of input channels is set as a sub video on the side of the screen. Operating means for setting a display mode for displaying in a line in the display area, and moving the column of the sub-images displayed in the display area in the direction of the arrangement while the sub-image displayed at the top of the moving direction And an operation means for performing a scrolling operation for displaying a video of another channel which has not been displayed so far as a sub-video. With this configuration, it is possible for the user to check the information contents of all the other input channels while watching the main image with a simple operation.

[0012] The present invention further comprises an operation means for selecting a sub-picture displayed in the display area and displaying it as a main picture on the screen. According to such a configuration, the desired channel can be easily determined by knowing all the information contents of the input channel, and the video of the desired channel is selected and displayed as the main video by a simple operation. Make it possible.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a main part of a first embodiment of a television receiver using a remote controller according to the present invention, wherein 1 is an antenna, 2 and 3 are tuners,
4, 5 are IF processing means, 6, 7 are input terminals, 8 is a signal switching circuit, 9 is a main video signal processing circuit, 10 is a main synchronizing signal processing circuit, 11 is a sub video signal processing circuit, and 12 is a sub synchronizing signal. Processing circuit, 13 is a signal switching circuit, 14 is a video output circuit,
Reference numeral 15 denotes a deflection circuit, 16 denotes a CRT (CRT), 17 denotes a multiplexer, 18 denotes an A / D (analog / digital) converter, 19 denotes a video memory control processing circuit, 20 denotes a video memory, 21 denotes a reference signal generation circuit, 22 Is a D / A (digital / analog) converter, 23 is a control processing unit,
Reference numerals 4 and 25 are channel selection processing circuits, 26 is a remote controller according to the present invention, 27 is a screen display processing circuit, and 28 is a memory.

In FIG. 1, a memory 28 stores various kinds of control information. A control processing circuit 23 such as a microcomputer uses the control information of the memory 28 to respond to command information from a remote controller 26. Control of each part.

The received signal of the antenna 1 is supplied to tuners 2 and 3. These tuners 2 and 3 include a control processing unit 23
TV signals of channels corresponding to the channel selection signals of the channel selection processing circuits 25 and 24 controlled by
After being subjected to processing such as amplification and detection by the processing means 4 and 5 and demodulated into a video signal, it is supplied to the signal switching circuit 8. Further, the signal switching circuit 8 has VTs from input terminals 6 and 7.
Video signals from external devices such as R, video disk, facsimile, and personal computer can be input. The signal switching circuit 8 is controlled by the control processing unit 23 to select and output any one of the video signal from the IF processing means 4 and 5 and the video signal from the input terminals 6 and 7 as the main video signal Mv, and Any of the video signals from the processing means 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 video processing circuit 9, passes through the signal switching circuit 13, is amplified by the video output circuit 14, and is
6. The main video signal Mv output from the signal switching circuit 8 is supplied to the main synchronization processing circuit 10, where the horizontal and vertical synchronization signals are separated and supplied to the deflection circuit 15 to form a deflection wave signal of the CRT 16. .

At power-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 remote controller 26, the main video signal Mv is selected from the video signal of the program of the channel selected by the tuner 2 or 3 and the output video signal of the external device from the input terminals 6 and 7. In addition, by performing a channel selection operation with the remote controller 26, the control processing unit 23 controls the channel selection processing circuit 24 or 25, and the tuner 3 or 2 selects and displays the video of the program of the desired channel. be able to.

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 video) and the video of the sub video signal Sv (hereinafter, referred to as the sub video) are simultaneously displayed on the TV screen of the CRT 16, and the channel of the main video is displayed. (Hereinafter referred to as the primary channel)
The program contents of a plurality of sub-video channels (hereinafter referred to as sub-channels) can also be confirmed. Hereinafter, such a use mode is referred to as a multi-channel display mode (in contrast, a mode for displaying only one-channel video on the TV screen is hereinafter referred to as a normal display mode).
The multi-channel display mode will be described below.

When the signal switching circuit 8 selects the video signal from the IF processing means 4 as the main video signal Mv in the normal display mode, the remote controller 26 is operated to instruct the multi-channel display mode. Control processing unit 23
Controls the respective sections, and the signal switching circuit 8 causes the video signal from the IF processing means 5 to be selectively output as the sub-video signal Sv while the main video signal Mv remains the video signal from the IF processing means 4, 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 the channel selected by the tuner 2 (i.e., the main channel), but in the following description, 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 multiplexer 17 outputs a luminance signal and two chromaticity signals. Are converted into 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.
The data is written to separate recording areas of the video memory 20.

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 synchronism with the sub-synchronization signal separated from the video signal Sv by 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 processing 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 during the other period. 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 is displayed at T16, and the display image is shown in FIG. Here, it is assumed that a main image and three sub-images are displayed on the TV screen 16a of the CRT 16, the main image is channel 1 (hereinafter referred to as CH1), and the sub-image is on the right side of the TV screen 16a. Three are arranged in the vertical direction and displayed, and are respectively referred to as CH3, CH4, and CH6 from the top. Here, the main video is a moving image, but the displayed sub video is a still image.

The video memory 20 stores video of all channels other than the main channel. Of these, three channels are read out and displayed on the CRT 16. Then, when a scroll operation is performed with the remote controller 26, the control processing unit 23 controls the video memory control processing circuit 19 to change the read area of the video memory 20. Thereby, as is clear from FIGS. 2A and 2B, the TV
The display of the entire display area of the sub-picture on the screen 16a is moved upward as indicated by an arrow. When this scroll operation is released, as shown in FIG.
The display state is different from that in FIG. Here, the still images of CH4, CH6, and CH8 are displayed in order from the top. Further, it is possible to scroll down according to the manner of operation of the remote controller 26.

In this manner, by scrolling the display area of the sub-picture, the sub-pictures of all the channels other than the main channel can be viewed, and the contents can be confirmed.

Note that the scroll in the present invention means that the display content of the entire display area of the sub-picture moves up and down, and the display position of the channel is determined as shown in FIG. And the image is switched from the top in the display position.
This is completely different from the scroll in the technique described in Japanese Patent Publication No.

When the multi-channel display mode is released by operating the remote controller 26 in the display state shown in FIG. 2 (a), only the moving image of the main channel CH1 is displayed.
The display returns to the normal display mode displayed on the entire V screen 16a.

In the display state shown in FIG.
When the user wants to view the image of H6 and designates this channel CH6 by operating the remote controller 26, the control processing section 23 controls the channel selection processing circuits 25 and 24 and the tuner 2
Tunes to CH6, and the tuner 3 tunes to CH1 which has been the main channel. Then, the signal switching circuit 8 selects and outputs the CH1 video signal output from the IF processing means 5 as the sub-video signal Sv under the control of the control processing unit 23, and the video memory control processing circuit 19 executes the control processing. Under the control of the unit 23, one image of the CH1 video signal, which is the sub-video signal Sv, is reduced and written into the area of the video memory 20 where the CH6 sub-video is stored. Thereby, CRT1
As shown in FIG. 2 (d), the video of CH6 is displayed as a moving image on the TV screen 16a of FIG.
In the part where the still image of CH6 was displayed in (c), C
The still image of H1 is displayed as a sub-image. That is, the main video and the sub video are displayed interchangeably.

When the multi-channel display mode is released by operating the remote controller 26 in the display state shown in FIG. 2D, as shown in FIG. 2E, the image of the main channel CH6 is displayed on the TV screen. The display returns to the normal display mode in which the entire image is displayed. Then, when the multi-channel display mode is designated again, the multi-channel display in which the main video similar to that shown in FIG. Then, in the previous exchange of the main and sub-pictures, since CH6 and CH1 are interchanged in the sub-channel, the arrangement order of the displayed sub-pictures is CH3, CH
4, CH1, CH8, CH10, and CH12, but as described above, once the multi-channel display mode is released and reset, the writing of the video of all the sub-channels to the video Since they are performed in order, as shown in FIG. 2 (f), the arrangement order is the order of the youngest channels, and it becomes easy to confirm each channel by the scroll.

For example, in the display state shown in FIG. 2C, the remote controller 26 can be operated to designate a sub-channel with a cursor. Of course, in this case, only the sub-channel displayed on the TV screen 16a can be designated, and if the sub-picture of CH6 is designated, CH1 and CH6 are switched in the same manner as above, and CH
6 is the main channel.

Next, the video memory control processing circuit 19 for performing such multi-channel display will be described.

The write operation of the video memory control processing circuit 19 to the video memory 20 will be described in more detail. In FIG. 1, the channel selection processing circuit 24 is controlled by the control processing section 23 to select the channel where the tuner 3 is located. When the state is changed, the control processing unit 23
9 to write one image (one field or one frame) of video on the selected channel into the video memory 20. When a predetermined time elapses until the writing is completed, The control processing unit 23 controls the channel selection processing circuit 24 again so that the tuner 3 selects the next channel, and similarly stores the video of the selected channel in the video memory 20 as a sub-video. . In this way, the control processing unit 23 performs, for example, the control of switching the selected channel of the tuner 3 and the control of writing to the video memory 20 alternately in ascending order of the channel numbers, so that all the video memories 20 The video of the sub-channel is stored in the video memory 20.

During this time, the reading of the video memory 20 is not performed, and when the writing of all the sub-channels to the video memory 20 is completed, this is detected, for example, by detecting the elapsed time by a timer, by changing the channel selection, by the above-mentioned video, When the control processing unit 23 detects the number of repetitions of writing to the memory 20 by a counter or the like, the control processing unit 23 controls the video memory control processing circuit 19 to
To start reading from. Thus, a multi-channel display as shown in FIG. 2A is performed. FIG. 3 is a block diagram showing a specific example of the video memory control processing circuit 19, in which 30 is a buffer memory, 31 is a write control circuit, 32 is a read control circuit, 33 and 34 are write address counters, 35 , 36 are read address counters, 3
Reference numerals 7 and 38 denote address selectors, and reference numeral 39 denotes a vertical filter. Parts corresponding to those in FIG.

In FIG. 3, when the digitized sub-picture signal Sv from the A / D converter 18 is written into the picture memory 20, the control processing unit 23 performs the channel selection processing circuit 24 (FIG. 1) as described above. Is controlled to switch the channel selected by the tuner 3 (FIG. 1), a control command is supplied from the control processing unit 23 to the write control circuit 31, and the write control circuit 31 starts operating. The write control circuit 31
After the start of the operation, the vertical synchronizing signal VS1 and the horizontal synchronizing signal HS1 supplied first from the sub synchronizing signal processing circuit 12 and the reference signal (clock) from the reference signal generating circuit 21 are fetched and written. Address counter 3
3, 34 and the read address counter 35 are counted.

On the other hand, the A / D converter 18 digitizes and supplies the sub-picture signal Sv of the channel newly selected by the above-mentioned channel selection, and
The processing is performed by the vertical filter 39.

The vertical filter 39 sets the vertical direction of an image to 1 / n (here, as shown in FIG. 2, three sub-images are arranged and displayed in the vertical direction. The compression is performed to 1/3 times, and therefore, n = 3). The compression processing is performed by a multiple of a line memory and an arithmetic circuit. For example, the n-line video information is converted into one-line video information by, for example, forming one line by performing a conversion process, so that the number of lines of one image is reduced to 1 / n times.

In the multi-channel display as shown in FIG. 2, the sub-picture is compressed 1 / n times in the horizontal direction. Such horizontal compression may be performed by setting the read speed to n times the write speed when reading from the video memory 20 described later. However, in this case, the frequency of the video signal becomes high, and when the video is displayed as it is with such a video signal, the displayed sub-video may be glare. In order to prevent this, the frequency of the sub-picture signal may be reduced, for example, A / D
What is necessary is just to make the sampling frequency of the converter 18 low.

When one line of video data generated in this manner is output from the vertical filter 39, the video data is supplied to the write address signal WA1 supplied from the write address counter 33 via the address selector 37. Thus, the data is written into the buffer memory 30 having a capacity of one line or more.

When the writing of one line to the buffer memory 30 is completed, the write control circuit 31 operates the read address counter 35 and the write address counter 34, and
Address selector 37 selects read address signal RA1 from read address counter 35. The address selector 38 is in a state of selecting the write address counter 34 until the writing to the video memory 20 is completed.

Therefore, the video data for one line stored in the buffer memory 30 is read by the read address signal RA1 from the read address counter 35. The write address signal WA2 supplied from the write address counter 34 via the address selector 38
0, and one line of video data read from the buffer memory 30 is sequentially written to the video memory 20 at an address determined by the write address signal WA2.

As described above, while the transfer of the video data for one line to the buffer memory 30 and the writing to the video memory 20 are performed, the vertical filter 39 performs the above-described image compression processing. When one line of video data is generated again, transfer to the buffer memory 30 and writing to the video memory 20 are performed. Thereafter, this operation is repeated, and the video of one sub-channel is stored in the video memory. 20 will be written. When the writing is completed, the control processing unit 23 operates as described above,
The operation proceeds to the similar write operation of the next sub-channel.

Here, the receivable channels are CH1,
CH3, CH4, CH6, CH8, CH10, CH12
If one of the seven channels is used, one of them becomes the main channel.
There are areas for storing the six sub-images of the areas 1 to 6, and they are written in the order of channels to be written, here, in the order of channels with smaller numbers, in the order of areas 1, 2, 3,.

In FIG. 3, when the writing of all the sub-channels is completed, the control processing section 23 operates the read control circuit 32. With the start of this operation, the write control circuit 31 stops operating. As a result, writing to the video memory 20 is not performed.

When the read control circuit 32 starts operating,
The first vertical synchronization signal VS from the main synchronization signal processing circuit 10
2, the horizontal and vertical synchronizing signals (HS2, VS2) are sequentially fetched, the reference signal is fetched from the reference signal generating circuit 21, and the read address counter 36 outputs the main synchronizing signal processing circuit from the timing of the first vertical synchronizing signal VS2. The read address signal RA2 is generated in synchronism with the synchronization signals (HS2, VS2) from.

Here, the count number of the read address counter 36 corresponds to the three areas shown in FIG. As shown in FIG. 4, when the number of addresses in one area is m, the read address counter 36 is 0 to (3m-1).
, And an adder for adding a preset value P in the count value. The added value of the count value and the preset value P is stored in the video memory 20.
Read address signal RA2.

Therefore, assuming that the preset value P = 0, the value of the read address signal RA2 repeats from 0 to (3m-1). Therefore, in FIG. The video is repeatedly read. Assuming that this read area is R, in this case,
The result is as shown in FIG. Here, CH3
It is assumed that images of CH4, CH6, CH8, CH10, and CH12 are written in the areas 2, 3, 4, 5, and 6, respectively. In this case, FIG.
Reading from the video memory 20 is performed so that the multi-channel display as shown in FIG. When the preset value P is changed from 0, for example, as shown in FIG.
The read area R becomes as shown in FIG.
m-1) At this time, reading from the video memory 20 is performed so that multi-channel display as shown in FIG. 2B is performed.

The preset value P is supplied from the control processing unit 23 to the read control circuit 32 in response to the scroll operation of the remote controller 26, and the preset value P of the read address counter 36 is supplied by the control signal. Change. With the change of the preset value P, as shown in FIG. 5, the read area R in the video memory 20 moves while keeping the width constant, and as a result, the scroll display as described in FIG. 2 is obtained. It is done. Of course, if the moving direction of the reading area R in the video memory 20 is reversed, the scrolling direction is also reversed.

Further, as described above, the sub-picture is compressed by 1/3 in the horizontal direction, and as shown in FIG.
It is displayed at the right end of the screen 16a. For this reason, in the video memory 20, as shown in FIGS. 6 (c) and 6 (d), one line is output every horizontal scanning period (one line) H of the synchronization signal (VS2, HS2) from the main synchronization signal processing circuit 10. Video data is read every minute. This reading is performed at three times the speed of writing and in the last 1/3 of the video period h in the horizontal scanning period H.

The read control circuit 32 in FIG.
The switching control signal SW which becomes high level during this reading period is sent to the signal switching circuit 13. Thereby, the signal switching circuit 13
In FIG. 1, the sub video signal Sv 'output from the demultiplexer 29 is selected while the switching control signal SW is at the high level, and the main video signal processing circuit 9 selects the sub video signal Sv' while the switching control signal SW is at the low level. Processed main video signal Mv
Select

FIG. 6A shows the auxiliary synchronization signal (VS1,
FIG. 3B shows a writing period of the sub-synchronization signal in the video memory 20 during several H periods of HS1). Writing in the video memory 20 is performed every 3H.

As described above, the display area of the sub-picture of the TV screen can be scrolled as a whole. Now, it is assumed that the multi-channel display state shown in FIG. As described above, when the remote controller 26 is operated to designate the sub-picture CH6, the tuner 2 selects the CH6 under the control of the control processing circuit 23, and the tuner 3 controls the CH1. The signal switching circuit 8 is set to select a channel, and the signal switching circuit 8 selects the video signal of CH6 from the IF processing means 4 as the main video signal Mv, and selects the video signal of CH1 from the IF processing means 5 as the sub-video signal Sv. I do.

Further, the control processing section 23 controls the video memory control processing circuit 19 so as to write the sub-picture of CH1 into the video memory 20. That is, in FIG. 3, when there is a command to write the sub-picture of CH1 from the control processing unit 23,
The write control circuit 31 operates to control the write address counters 33 and 34 and the read address counter 35 in the same manner as described above. CH digitized by A / D converter 18
The video data of the sub-picture 1 is subjected to vertical image compression processing by the vertical filter 39, and then temporarily stored in the buffer memory 30.
And read out from it, and store them in C of the video memory 20.
The image of H6 is written to the area 3 (FIG. 4) where it was stored.

Here, in order for the video of CH1 to be written as described above, the control processing unit 23 indicates which sub-channel video is stored in each area of the video memory 20 shown in FIG. The data is created and stored in the memory 28 of FIG. 1, and when a sub-channel is designated in the multi-channel display, the storage area of the picture of the designated sub-channel in the video memory 20 can be grasped from the data. Like that. As described above, when the area to be rewritten in the video memory is known, the control processing unit 23 also instructs the area to the writing control circuit 31 in FIG. In response to this instruction, the write control circuit 31 presets a value for determining a writing area in the video memory 20 in the write address counter 34.

Thus, the region 3 in FIG.
Rewritten with H1 video. Meanwhile, the read control circuit 3
When the rewriting in the video memory 20 is completed, the operation is started by an instruction from the control processing unit 23, and the reading of the video memory 20 is restarted. Thereby, the multi-channel display shown in FIG. 2D is obtained.

When the multi-channel display mode is released in the display state shown in FIG. 2D, the signal switching circuit 8 is controlled by the control processing section 23 in FIG.
Only selects and outputs the video signal of CH6 from the IF processing means 4 as the main video signal Mv.
The normal display mode shown in FIG. When the multi-channel display mode is designated in this state, writing to the video memory 20 is performed, and the multi-channel display shown in FIG. 2 (f) is obtained.

In the above description, the sub-pictures are arranged in the vertical direction as shown in FIG. 2. As shown in FIG. 7, for example, the sub-pictures are arranged in the horizontal direction along the lower side of the TV screen 16a. You can also scroll horizontally.

However, in the case of such a multi-channel display in the horizontal direction, as shown in FIG. 8, writing is performed for each area, but reading is performed at the end of the vertical scanning period of the main synchronization signal. In the period 3, the video data in the horizontal scanning period corresponding to the three regions in the video memory 20 is read every horizontal scanning period. That is, in FIG. 8, assuming that the readout region R is slightly to the left of the drawing and extends over the regions 2, 3, and 4, the readout region R is shifted from the regions 2, 3, and 4 for each horizontal scanning period of the main synchronization signal. The video information is read line by line in order. As a result, FIG.
The display shown in FIG. 7A is obtained, and by changing the preset value P in FIG. 8, the horizontal scrolling as shown in FIG. 7B becomes possible.

In the scroll display described above,
By changing the switching speed of the preset value P, the scroll speed can be changed.

Returning to FIG. 1, the screen display processing circuit 27
This is for generating an additional image such as a character, a number, a symbol, or a figure to be displayed on the TV screen 16a of the CRT 16 over the video. The display position of the additional image is specified by the control processing unit 23. The signal of the additional image is formed in synchronization with the main synchronization signal from the main synchronization signal processing circuit 10. An example of such an additional image includes a channel number.

As shown in FIG. 2, the channel number may be displayed at the upper right corner of each video, or as shown in FIG. A margin may be provided, and a channel number may be displayed on the margin. The image in the margin in this case is also formed by the screen display processing circuit 27.

It is to be noted that such channel numbers and images in the margins must also move along with the video along with the scrolling, but the control processing unit 23 monitors the read operation of the video memory control processing circuit 19. Therefore, the timing of forming an image signal in the screen display processing device 27 may be controlled in accordance with the timing of reading the sub-video read from the video memory 20.

FIG. 10 is a plan view showing an operation surface of the remote controller 26 shown in FIG. 1, that is, one embodiment of the remote controller according to the present invention. Reference numeral 40 denotes a numeric key, 41 denotes a direction operation member, 42 denotes a multi-button, 43 Is a decision button.

In the same figure, to set the multi-channel display mode as shown in FIG. 2 or 7, the multi-button 42 is operated. When scrolling is performed in the multi-channel display mode, the upper portion 41a or the lower portion 41b of the direction operation member 41 is pressed in the multi-channel display mode shown in FIG. When the upper part 41a is pressed, as shown in FIG. 2, the display screen of the sub-picture scrolls upward, and when the lower part 41b is pressed, it scrolls downward. The scrolling continues while the button is pressed, and the scroll speed can be changed depending on how hard the upper part 41a or the lower part 41b is pressed.

In the case of a multi-channel display as shown in FIG. 7, the left and right directions of the direction operating member 41 may be pressed in the same manner.

In the multi-channel display state as shown in FIG. 2C, when the numeral key 40 of "6" is operated, as shown in FIG.
H1 can be replaced with a sub-picture, and when canceling the multi-channel display mode, the multi-button 42 is operated again. As a result, C shown in FIG.
The normal display mode of H6 is set.

When the multi-channel display mode is not set, the direction operation member 41 functions as a function key for an operation different from the above.

In this example, the desired sub-picture is designated by operating the numeric keys 40. However, a cursor key, a designation decision key and the like are provided so that the desired sub-picture is designated by the cursor. You can also.

Furthermore, the sound output from the speaker (not shown) is that of the main channel.

FIGS. 11 and 12 are diagrams showing the display operation of the second embodiment of the television receiver using the remote controller according to the present invention.

In the second embodiment, the basic configuration is as follows.
As shown in FIG. 1 and FIG. 3 and the like, the third embodiment is the same as the first embodiment described above, and the following mainly describes points different from the first embodiment.

First, the first difference is that one of a plurality of sub-pictures (hereinafter, three as described above) displayed in the multi-channel display mode is displayed as a moving image.

FIG. 11A shows the case of the normal display mode in which the video of CH4 is displayed as a moving image.
Remote controller 26 in FIG.
When the multi-channel display mode is designated by operating 2), as shown in FIG. 11B, a sub-picture (CH3 picture in this case) displayed in the center is displayed as a moving image. An outer frame 44 is provided for the sub-image displayed as a moving image. The image signal of the outer frame 44 is formed by the screen display processing circuit 27 in FIG. 1, and is synthesized with the video signal by the video output circuit 14.

The outer frame 44 can be moved up and down as shown in FIGS. 11 (c) and 11 (d). When the outer frame 44 is moved in this manner, the outer frame 44 is newly added.
(In the case of FIG. 11C, the sub-image of CH1 and in the case of FIG. 11D, the sub-image of CH4) is displayed as a moving image.

As described above, in order for one sub-channel to display a moving image, the control processing unit 23 in FIG. 1 completes the writing of the images of all the channels to the image memory 20 in FIG. , (C), (d), the state of the tuner 3 is set so as to select one of the channels on which the sub-pictures are displayed, and the signal switching circuit 8 causes the IF processing stage 5 to operate. Is selectively output as the sub-video signal Sv. Then, the control processing section 23 controls the video memory control processing circuit 19 so that the sub video signal is always written in the corresponding area of the video memory 20.

When the outer frame 44 is moved, the sub-picture cannot be scrolled. Therefore, in the remote controller shown in FIG.
When the upper part 41a or the lower part 41b of the direction operating member 41 is pressed in the multi-channel display mode 1 (b), the outer frame 44 moves up and down.

The outer frame 44 cannot move above the uppermost sub-picture position to be displayed, and cannot move below the lowermost sub-picture position to be displayed.
Even if the outer frame 44 moves to the movement limit, if the direction operation member 41 in FIG. 10 is continuously operated, next, the scroll of the sub-picture starts in the opposite direction. FIG. 11E shows a state in which the outer frame is set at the lower limit. When the direction operating member 41 is operated in this state, FIGS.
As shown in (h), the sub-picture scrolls upward.

The second embodiment, which is different from the first embodiment described above,
In the first embodiment, as described with reference to FIG.
Although scrolling is performed continuously, in the second embodiment, as is apparent from FIGS. 11 (e) to 11 (h), scrolling is performed discontinuously one screen at a time for sub-pictures. It is. This prevents the displayed sub-picture and the outer frame 44 from shifting.

In order to perform such discontinuous scrolling, the preset value P in the read address counter 36 described with reference to FIGS.
4 may be changed discontinuously by the number of addresses "m" of each area shown in FIG. A third point different from the first embodiment described above is that, of the displayed sub-pictures, only the sub-channels for displaying a moving image surrounded by an outer frame can be replaced with the main channels.

FIG. 12 is a diagram for explaining a case where a desired sub-channel is replaced with a main channel. When the sub-channel in the outer frame 44 is designated in the display state shown in FIG. 11 (h), FIG. As shown, the same video as the video in the outer frame is displayed as the main video. Then, by releasing the multi-channel display mode, FIG.
As shown in the figure, the normal display mode is set in which only the video of the new main channel is displayed.

Therefore, in the second embodiment, in order to set a desired sub-channel as a main channel, the outer frame 44 is required.
The outer frame 44 is moved to the uppermost position or the lowermost position of the sub-image display area and fixed so that the image of the sub-channel is contained in the sub-channel. Then, the sub-channel may be designated, and the outer frame 44 may be moved up and down to select one of the three sub-images currently displayed. Can also.

In addition to the designation function, the operation of the numeric key 40 (FIG. 10) of the remote controller 26 causes the sub-channel on which the sub-image is displayed to be displayed, as in the first embodiment described above. However, the sub-channel outside the outer frame 44 may be specified as the main channel.

The remote controller 26 for the second embodiment
10 can also be configured as shown in FIG. 10. In this case, the outer frame 44 is moved by the operation of the direction operating member 41, and the outer frame 4 is moved.
As shown in FIGS. 11 (c) and 11 (d), when the direction operation member 41 is operated as it is even if the movement of the sub-picture 4 cannot be performed, the sub-picture is scrolled. Then, when the display state shown in FIG. 11H is reached and the sub-channel of CH10 is desired to be the main channel, the determination button 43 of the remote controller in FIG. 10 is pressed. As a result, FIG.
As shown in the figure, the video of CH10 is displayed as the main video.

In the operation according to the second embodiment,
In the display state shown in FIG. 11 (h), in FIG. 1, as described above, the main channel CH4 is selected by the tuner 2 and the moving image is displayed on the sub-channel C4.
H10 is selected by tuner 3. In such a state,
When an operation using CH10 as the main channel is performed by the remote controller 26, the control processing unit 23 controls the channel selection processing circuit 25, and sets the channel selected by the tuner 2 to CH10 equal to the tuner 3. Thus, the main video signal Mv output from the signal switching circuit 8 becomes a video signal of CH10. At this time, the sub-video signal Sv output from the signal switching circuit 8 is also a video signal of CH10.
The display state shown in FIG.

In the second embodiment, as described above, only the sub-picture displayed in the outer frame 44 can be designated as the main picture, and all the channels are set as the main channels. Therefore, every channel received is a sub-channel.

FIG. 13 is a flowchart showing the operation of the second embodiment. The multi-button, direction operation member, enter button, and numeric key are operated by the operation members 42, 41, 43, and 40 in FIG. 10, respectively. is there. In FIG. 13, steps S9, S10, and S6 are omitted.
This represents the operation of the first embodiment described above.

In the second embodiment, the sub-pictures may be arranged in the horizontal direction as shown in FIG.

In the first and second embodiments described above, in FIG. 1, image information of an external device such as a personal computer or a facsimile from the input terminals 6 and 7 is stored in the video memory 20 as a still image. As the first,
As in the second embodiment, it can be displayed as a sub-picture.

FIG. 14 shows a display example in this case, and FIG. 14A shows a state in which three pieces of stored information are fixedly displayed. The image memory 20 of FIG. 1 can store three or more pieces of image information, and when it is desired to view other image information, the user operates the remote controller 26 (FIG. 1) as in the previous embodiment. 14B, scrolling may be performed. Therefore, as shown in FIG.
You can see other image information.

In order to write the image information into the video memory 20 in this manner, in FIG. 1, the input image is output from at least one of the input terminals 6 and 7, and the input operation section 26 is operated. By doing so, the signal switching circuit 8 selectively outputs the image signal as the main video signal Mv and the sub video signal Sv. Thereby, C
An image based on this image signal is also displayed on the TV screen of the RT 16.
6, the control processing unit 23 instructs the control processing unit 23 to take in the data.
9 to write the image information at that time into the video memory 20. In this way, necessary image information is sequentially written to the video memory 20.

In this case, in the video memory 20, if the area for storing the video of the receiving channel from the tuner 3 as the sub-video is different from the area for storing the image information from the external device input to the input terminals 6 and 7, However, it is not always necessary, and they may be in the same region.

In each of the embodiments described above, Pin
Although the main video and the sub video are displayed in a multi-channel manner by P, they may be displayed by PoutP. However, in this case, in FIG. 1, for example, the main video signal processing circuit 9 is also provided with a memory means for video compression,
In the multi-channel display mode, the main video is also compressed. In this case, of course, the synchronization signal supplied to the deflection circuit 15 and the video memory control processing circuit 19 must be synchronized with the main video signal output from the main video signal processing circuit 9.

[0093]

As described above, according to the present invention,
With a simple operation, even if only some of the receivable channels are displayed, the program contents of all receivable channels can be displayed in a recognizable display state, and the program display of the currently watched channel can be displayed. It is possible to easily confirm the program contents of all other channels without being disturbed.

According to the present invention, when the user wants to view the desired sub-channel, he only has to perform the operation of designating the sub-picture of the desired sub-channel displayed on the screen. Operation becomes very simple.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a television receiver using a remote controller according to the present invention.

FIG. 2 is a diagram showing a specific example of a multi-channel display and a scroll display thereof in the first embodiment shown in FIG.

FIG. 3 is a block diagram showing a specific example of a video memory control processing circuit in FIG. 1;

FIG. 4 is a diagram schematically showing a recording area of a sub-picture in a picture memory in FIG. 1;

5 is an explanatory diagram showing a read operation of a video memory for scroll display shown in FIG. 2;

FIG. 6 is a timing chart showing a write / read operation in the video memory in FIG. 1;

FIG. 7 is a diagram showing another specific example of the multi-channel display on the television receiver shown in FIG. 1 and a scroll display thereof.

FIG. 8 is an explanatory diagram showing a read operation of the video memory for scroll display shown in FIG. 7;

9 is a diagram showing still another specific example of the multi-channel display in the television receiver shown in FIG.

FIG. 10 is a plan view showing an operation surface of the remote controller according to the embodiment of the present invention.

FIG. 11 is a diagram showing outer frame movement and scrolling on a display screen of a second embodiment of the television receiver using the remote controller according to the present invention.

FIG. 12 is a diagram showing, on a display screen, an operation of converting a sub-channel to a main channel following FIG. 11;

FIG. 13 is a flowchart showing an operation of the second embodiment of the television receiver using the remote controller according to the present invention.

FIG. 14 is a diagram showing display contents and a scroll operation of a third embodiment of the television receiver using the remote controller according to the present invention.

FIG. 15 is a diagram illustrating an example of a multi-channel display of a conventional television receiver.

FIG. 16 is a diagram showing a conventional scroll display.

[Explanation of symbols]

 2, 3 tuner 8 signal switching circuit 9 main video signal processing circuit 11 sub video signal processing circuit 13 signal switching circuit 16 CRT 16a TV screen 18 A / D converter 19 video memory control processing circuit 20 video memory 22 D / A converter Reference Signs List 23 Control processing unit 24, 25 Tuning processing circuit 26 Input operation unit 27 Screen display processing circuit 30 Buffer memory 39 Vertical filter 40 Numeric key 41 Direction operation member 42 Multi button 43 Enter button 44 Outer frame

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Ishibashi 1-280 Higashi-Koigabo, Kokubunji-shi, Tokyo Inside the Hitachi, Ltd.Design Research Laboratories (72) Inventor Shingo Shingo Uchiki 1-280 Higashi-Koigabo, Kokubunji-shi, Tokyo Hitachi, Ltd. Inside the Design Laboratory (72) Inventor Yasuhiro Kasahara 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Information and Imaging Division, Hitachi, Ltd.

Claims (2)

[Claims] 1. A remote control for a television receiver capable of inputting video of a plurality of channels, wherein a video of one of the plurality of input channels is displayed on a screen as a main video. An operation for setting a display mode in which video images of a predetermined number of channels among the plurality of input channels are displayed in a row in a display area set on a side of the screen as sub-video images Means, while moving the column of the sub-pictures displayed in the display area in the arrangement direction, replacing the sub-pictures displayed at the head of the moving direction with the video of another channel which has not been displayed so far. Operating means for performing a scrolling operation for displaying a sub-picture as a sub-picture. 2. A remote control for a television receiver capable of inputting video of a plurality of channels, wherein a video of one of the plurality of input channels is displayed on a screen as a main video. An operation for setting a display mode in which images of a predetermined number of channels among the plurality of input channels are displayed as sub-images in a line in a display area set on a side of the screen. And a control means for selecting the sub-picture displayed in the display area and replacing and displaying the sub-picture as a main picture on the screen.