JPH0898051A - Television receiver - Google Patents

Abstract

PURPOSE: To obtain the television receiver in which a desired video image is controlled by simple remote control operation without increasing the number of pushbuttons and without increasing the number of times of operations of the remote control in the case that a desired video image is remotely controlled with the remote control in the case of displaying plural video images in the television receiver on which plural video images are displayed. CONSTITUTION: A transmission light from a remote controller 19 is received by light receiving devices 1, 2 and an amplitude comparator 7 compares amplitudes of signals, as a result a light receiving device switching signal 14 is outputted to a changeover device 8 and a controller 13. The changeover device 8 selects either signal from the light receiving devices 1, 2 and a synthesizer 9 synthesizes signals from the light receiving devices 1, 2. On the other hand, a mode selector 10 selects an output signal from the changeover device 8 or the synthesizer 9 and the selected signal is A/D-converted and given to the controller 13.

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 remote control device for remote control and capable of displaying a plurality of images on one screen. The present invention relates to a television receiver that can easily and easily control each of a plurality of screens.

[0002]

2. Description of the Related Art Conventionally, a plurality of video sources such as an image from one or more built-in TV tuners and an image from an external image signal input from the outside are used as one CPT.
There is a television receiver that has the function of displaying simultaneously on a (color picture tube).

For example, as shown in FIG. 6A, a picture-in-picture display is shown in which one picture is displayed in full CPT and another picture is reduced and overlapped on the picture.
As shown in (b), there is a picture-out-picture display in which a plurality of videos are displayed so that they do not overlap each other.

The display of these images is a so-called parent-child screen display in which one or more small child-screen images are displayed inside or outside one large parent-screen image, and the parent-screen image and the child-screen image are displayed. The sizes are different from each other.

By the same method as the parent-child screen display, there is also a multi-screen display in which a plurality of video images have the same display area.

Further, conventionally, a television receiver is provided with a remote control function for controlling the television receiver by a remote control device (hereinafter referred to as a remote controller). The remote control includes each control item of the television receiver,
That is, a push button corresponding to each control item is provided for controlling channel switching, volume adjustment, picture, color image adjustment, and the like.

Next, in a television receiver capable of displaying a plurality of images on one screen as described above, remote control of the television receiver when displaying a plurality of images, that is, a remote controller Control of each control item by
A conventional example will be described.

It is now assumed that the parent-child screen display shown in FIG. 6 (a) is being performed. In this case, the remote controller is provided with dedicated control buttons for each of the parent screen and the child screen, and various controls, that is, channel switching, volume adjustment, etc., can be performed by operating the respective dedicated buttons. still,
Control items common to the parent screen and the child screen, such as image adjustment, are controlled by operating the control buttons common to the parent and child.

However, in this case, since it is necessary to provide the remote controller with the control buttons dedicated to the main screen and the sub screen, the number of push buttons used is large and an erroneous operation is likely to occur. Also, for the purpose of reducing the number of push buttons on the remote control,
When a specific push button has multiple command functions, remote control operation becomes difficult.

Therefore, a button for image selection is provided on the remote controller, and first, a plurality of images displayed on the CPT are switched and selected by the button for image selection to confirm the controlled screen. A method of performing various controls, that is, channel switching, volume adjustment, image adjustment, and the like on the controlled screen may be adopted. For example, it is assumed that the multi-screen display shown in FIG. 6B is being performed on the screen.
In this case, for example, when performing screen control of the image 22,
Operate the buttons for video selection to select the video 2
The image 22 is selected by sequentially switching in the order of 0, image 21, image 22, and image 23. As a method of informing the viewer which image is currently selected, for example, each time the button for image selection is pressed, the color of the frame image displayed around the selected image is changed, or selection is made. There is a method of displaying a character indicating that it is selected in the displayed image.

However, this method has a problem in that it is necessary to perform various controls after confirming the controlled screen, the number of operations of the remote controller is large, the operation is troublesome, and a long operation time is required.

[0012]

As described above, in the conventional television receiver capable of displaying a plurality of images, it is necessary to perform various controls after the controlled screen is settled, and the operation is troublesome and the operation time is long. There was a problem that required.

Therefore, the present invention has been made to solve such a problem, and suppresses an increase in the number of push buttons of the remote controller, and enables multi-screen display without increasing the number of operations of the remote controller. It is an object of the present invention to provide a television receiver capable of remotely controlling each screen.

[0014]

According to a first aspect of the present invention, there is provided a television receiver which is capable of simultaneously displaying a plurality of video images based on a plurality of television programs and a video image displayed on the display means. A control signal transmitting means for transmitting a control signal for controlling the presentation of a television program corresponding to a desired image, and 1 for receiving the control signal
One or more receiving means, a transmitting azimuth detecting means for detecting a transmitting azimuth of the control signal from the control signal transmitting means, and a transmitting azimuth detecting means for detecting the transmitting azimuth of the control signal based on the reception results of the one or more receiving means. Selected video discriminating means for discriminating the video selected by the control signal transmitting means on the basis of the transmission direction, and one of the one or more receiving means based on the discrimination result of the selected video discriminating means. 8. A television receiver according to claim 7, further comprising: selection control means for selecting a receiving means and controlling presentation of the television program using the control signal from the selected receiving means. Display means capable of simultaneously displaying a plurality of videos based on a plurality of television programs, and provision of a television program corresponding to a desired video among the videos displayed on the display means. Control signal transmitting means for transmitting a control signal for controlling the control signal, one or more receiving means for receiving the control signal, and the control signal transmitting means based on the reception result of the one or more receiving means. Transmitting direction detecting means for detecting the transmitting direction of the control signal, and selected image discriminating means for discriminating the image selected by the control signal transmitting means based on the transmitting direction detected by the transmitting direction detecting means, Selection for controlling the presentation of the television program using the control signal from the receiving unit selected by selecting one receiving unit from the one or more receiving units based on the determination result of the selected video determining unit Control means,
Synthesis control means for controlling the presentation of the television program by synthesizing and using the control signals from the one or more receiving means based on the determination result of the selected video determining means,
It is provided with a first control means for switching and selecting the selection control means and the synthesis control means based on the number of images displayed by the display means.

[0015]

According to the first aspect of the present invention, the control signal for controlling the presentation of the television program corresponding to the desired video among the plurality of videos displayed by the display means by the control signal transmitting means is provided. Sent. This control signal is received by one or more receiving means, and the transmitting direction detecting means detects the transmitting direction of the control signal based on the reception result. The selected video discriminating means discriminates the selected video image based on the detected transmission direction, and based on the discrimination result, the selection control means selects one of the receiving means and uses the control signal from the selected receiving means. Control the presentation of television programs.

According to the seventh aspect of the invention, the selection control means and the combination control means are switched and selected by the first control means. When the control is switched to the control by the selection control means, the presentation of the television program is controlled by using the control signal from the one reception means selected by the selection control means. Further, when the control is switched to the control by the synthesis control means,
Control signals from one or more receiving means are combined and used to control the presentation of television programs.

[0017]

EXAMPLES Examples will be described with reference to the drawings. FIG. 1 is a block diagram showing a circuit configuration of an embodiment of a television receiver according to the present invention. FIG. 2 is a diagram showing an overview of the television receiver according to the present invention. First, the configuration of the present embodiment will be described with reference to FIG.

In the present embodiment, as shown in FIG. 2, a television receiver capable of displaying two images of the same size on the screen of the television receiver, that is, having a dual screen display function. Will be described as an example.

In FIG. 2, the television receiver 16
Can project images 17 and 18 of the same size on the display screen of the CPT, and are remotely controlled by a remote controller 19 which is a control signal transmitting means having narrow directivity. . Television receiver 16 C
Left and right sides of the PT display screen, that is, the image 17 and the image 1
Optical receivers 1 and 2 are provided at the lower end of the front surface of the television receiver 16 corresponding to each of Nos. Remote control 19
Has a power key, a volume key, a channel key, a number key and the like, which are not shown. The remote controller 19 generates a remote control signal based on the pressing operation of these keys, converts it into infrared light, and transmits it from a light emitting unit (not shown). In this embodiment, the remote controller 19 emits the transmitted light with a sharp directivity. The transmitted light emitted from the remote controller 19 having such a narrow directivity is received by the light receiving device 1 and the light receiving device 2 which are receiving means, and is guided to the circuit shown in FIG.

In FIG. 1, the light receiver 1 and the light receiver 2 are
The transmitted light from the remote controller 19 is received, converted into a remote controller signal, and output to the amplifiers 3 and 4, respectively. The amplifiers 3 and 4 amplify the remote control signals from the light receivers 1 and 2. Low-pass filters (hereinafter referred to as LPFs) 5 and 6 remove noise components from the output signals of the amplifiers 3 and 4, and extract only constant voltage components.
The remote control signal from which only the constant voltage component is extracted is output to the amplitude comparator 7 which is the directional bearing detecting means. The amplitude comparator 7 is composed of a circuit using an operational amplifier as shown in FIG. 3, for example.

In FIG. 3, the signal from the LPF 5 is the resistor R1.
Is supplied to the (−) terminal of the operational amplifier 31,
The signal from F6 passes through resistor R2 having the same value as resistor R1,
It is supplied to the (+) terminal of the operational amplifier 31. Also,
The (+) terminal is grounded via the resistor R3, and the output terminal of the operational amplifier 31 is connected to the (-) terminal via the resistor R4 having the same value as the resistor R3. The output voltage Vout of the operational amplifier 31 is the voltage V2 applied to the (+) terminal,
It is proportional to the difference from the voltage V1 applied to the (−) terminal. The output voltage of the operational amplifier 31 is output to the controller 13 and the switch 8.

On the other hand, in FIG. 1, the amplitude comparator 7 includes an LPF 5
, And the amplitudes of the output signals from the LPF 6 are compared, and the photodetector switching signal 14 is output to the controller 13 and the switching device 8.
The operation of the amplitude comparator 7 is shown in Table 1.

[0023]

[Table 1] As can be seen from Table 1, when the level of the output voltage from the LPF 5 is I and the level of the output voltage from the LPF 6 is J,
If the relationship between the input voltages I and J is [I> J], the output voltage of the photodetector switching signal 14 is “negative potential”, and if the relationship between the input voltages I and J is [I <J], Receiver switching signal 1
If the output voltage of No. 4 is “positive potential” and the relationship between the input voltages I and J is [I≈J], the output voltage of the photodetector switching signal 14 is “minute potential” and the relationship between the input voltages I and J is Is [I
= J], the output voltage of the photodetector switching signal 14 is “0.
Potential. The photoreceiver switching signal 14 is a signal indicating which of the signals received by the photoreceiver 1 and the photoreceiver 2 is stronger, and as described above, the switch 8 and the control means and the selected video discriminating means. Is output to the controller 13.

The switching device 8 outputs the output of the amplifier 3 or the amplifier 4, that is, the light receiving device 1 according to the state of the light receiving device switching signal 14.
Alternatively, one of the signals from the light receiver 2 is selected. The operation of the switch 8 is shown in Table 2.

[0025]

[Table 2] As can be seen from Table 2, the switching device 8 operates as the receiver switching signal 14
If the input voltage of is a negative potential, the amplifier 3 is selected, and if the input voltage of the photoreceiver switching signal 14 is a positive potential, the amplifier 4 is selected.
Select. In addition, the input voltage of the receiver switching signal 14 is 0
If it is a potential or a minute potential, the switch 8 becomes inoperable and the amplifier 3 or 4 is not selected.

Next, a synthesizer 9 which is a control signal synthesizing means has a function of synthesizing the output signals of the amplifiers 3 and 4. The output of the switch 8 and the output of the combiner 9 are given to the mode selector 10. The mode selector 10 is controlled by a mode switching signal 15 from a controller 13, which will be described later, and selects either the signal from the switch 8 or the output from the combiner 9. The operation of the mode selector 10 is shown in Table 3.

[0027]

[Table 3] As can be seen from Table 3, when the state level of the mode switching signal 15 is L (low level), the mode selector 10 selects the output of the switching device 8 and the state level of the mode switching signal 15 is H ( If it is (high level), the output of the combiner 9 is selected.

The signal selected by the mode selector 10 is output to the detector 11. The detector 11 detects a predetermined frequency component of the signal selected by the selector 10, and outputs a control signal. The output signal of the detector 11 is the waveform shaper 1
2, the waveform shaper 12 shapes the waveform of the input signal, A / D-converts it, and outputs it to the controller 13 as control data. The controller 13 error-corrects the input control data and then decodes the instruction content.

Based on the light receiver switching signal 14 from the amplitude comparator 7, the controller 13 determines which of the light receivers 1 and 2 has the higher reception intensity, that is, which remote controller 19 directs which light receiver. Determine if it was operated.

When the controller 13 outputs the L mode switching signal, the controller 13 performs various controls based on remote controller operations, for example, on the screen adjacent to the light receiver to which the remote controller 19 is directed. ing. In addition, the controller 13
When an H mode switching signal is output, various controls based on remote control operations are performed on the only screen displayed on the CPT.

The synthesizer 9 is constructed by an existing technique such as an adder using an operational amplifier (not shown).

Next, the operation (action) of FIG. 1 will be described with reference to the flowchart of FIG. 4 showing the control procedure of the controller 13. It is assumed that images 17 and 18 are displayed on the left and right on the display screen of the television receiver 16. Then, it is assumed that the viewer desires to perform a predetermined control on the image 17. In this case, the viewer points the remote control 19 at the light receiver 2 at the lower right of the screen of the television receiver 16 and presses the button corresponding to the desired control item. The remote control signal based on this button operation is converted into an optical signal, emitted, and received by the light receiver 1 and the light receiver 2. The remote control signals received by the light receiver 1 and the light receiver 2 are amplified by the amplifiers 3 and 4, respectively, and then the noises are removed by the LPFs 5 and 6, and the signals are given to the amplitude comparator 7. On the other hand, controller 1
3 confirms the reception of the remote control data in step x1 of FIG. 4, and when it receives the remote control signal, it checks the number of images displayed on the screen of the television receiver 16 (step x2).

Since the number of images displayed on the screen of the television receiver 16 is now two, the process shifts from step x2 to step x3 to read the photodetector switching signal 14, and the potential of the signal value is read. Check.

By the way, since the remote controller 19 has a narrow directivity and the remote controller 19 is directed to the light receiver 2, the reception strength of the light receiver 2 is stronger than that of the light receiver 1. Therefore, the output of the amplifier 4 is larger than that of the amplifier 3, and the constant voltage component from the LPF 6 is larger than the constant voltage component from the LPF 5. That is, in this case, the relationship of [I <J] in Table 1 is established, and the photodetector switching signal 14 from the amplitude comparator 7 becomes “positive potential”.

On the basis of the above result, when the controller 13 determines in step x4 that the output voltage of the photodetector switching signal 14 is not 0 potential or minute potential, the photodetector switching signal 14 is positive potential in the next step x5. Confirm that there is. As a result, the controller 13 proceeds to step x7 and determines that the image on the right side of the screen is selected. The controller 13 sets the level of the mode switching signal 15 to L in step x8 (step x8).

By the way, when it is confirmed that the output voltage of the light receiving device switching signal is a negative potential (steps x4 and x5), it is judged that the selected image is the image 17 on the left side of the screen (step). x6), and the level of the mode switching signal 15 is set to L (step x8).

On the other hand, the switch 8 selects the amplifier 4 because the output voltage of the light receiver switching signal 14 is "positive potential" (see Table 2), and the mode selector 10 controls the controller 13.
Since the level of the mode switching signal 15 is L, the switching device 8 is selected (see Table 3). Therefore, the signal received by the light receiver 2 is read by the controller 13 via the amplifier 4, the switch 8, the mode selector 10, the wave detector 11, and the waveform shaper 12 (step x9). The controller 13 controls the selected image 17 based on the read data (step x11). When the control of step x11 is completed, the state transits to the remote control data reception waiting state (wait state) of step x1.

Next, on the screen of the television receiver 16,
A case where remote control (remote control operation) is performed in the state where only one video is displayed will be described. When only one image is displayed on the screen, the predetermined control is performed if light is received by either the light receiver 1 or 2 regardless of the transmission direction of the remote controller. That is, since the remote controller in the present embodiment has a narrow directivity, only one of the light receivers 1 and 2 receives light, or the reception level of any of the light receivers is not sufficient depending on the transmission direction of the remote controller. But even in this case,
The signals received by the light receivers 1 and 2 are respectively sent to the amplifier 3
By combining with the combiner 9 after amplification in 4 and 4, remote control transmission light from all directions in front of the television receiver 16 can be widely received, and the sum of the two light receivers can be obtained even when the light reception level is low. By doing so, it is possible to secure sufficient signal strength.

That is, the controller 13 executes step x2 in FIG.
When it is determined that the number of images displayed on the screen of the television receiver 16 is 1, the process shifts to step x14 to set the level of the mode switching signal 15 to H. As a result, the mode selector 10 selects the output of the combiner 8. The signals received by the photodetectors 1 and 2 are amplified by amplifiers 3 and 4, respectively,
It is combined by the combiner 9 and given to the detector 11.
The remote control signal is detected by the detector 11 and then read by the controller 13 via the waveform shaper 12 (step x9). Next, the controller 13 controls the displayed image based on the read data (step x1
After 1), the process transits to the remote control data reception waiting state (wait state) of step x1.

As described above, when two images are displayed on the screen of the television receiver 16,
When the viewer selects a video selected from the remote control transmission direction, performs various controls, and when only one video is displayed on the screen of the television receiver 16, 2 is displayed.
One light receiver receives remote control transmitted light from all directions and performs various controls.

By the way, the amplitude comparator 7 of FIG.
The voltage level of the photodetector switching signal 14 is changed according to the difference between the constant voltage components of the signals from 5 and 6. Now, if two images are displayed on the TV screen and the transmitter of the remote control is directed to the right side of the TV screen by the viewer, the difference in the amount of light received by the light receiving unit 1 and the light receiving unit 2 Is large, the voltage level of the photodetector switching signal 14 which is the output of the amplitude comparator 7 is a relatively large positive potential signal. On the contrary, if it is clearly directed to the left side, the voltage level of the photodetector switching signal 14 which is the output of the amplitude comparator 7 becomes a relatively large negative potential signal. Therefore, the controller 1
3 can accurately determine which of the two videos is selected by the viewer.

However, when the transmitter of the remote controller is aimed near the center of the television screen, the difference in the amount of light received by the light receiving section 1 and the light receiving section 2 is small, so the amplitude comparator 7
The voltage level of the photodetector switching signal 14, which is the output of, is a signal having a potential of 0 volt or a relatively small potential.
Therefore, the controller 13 cannot accurately determine which of the two images is selected by the viewer, and the switcher 8 cannot determine which output of the amplifier 3 or 4 should be selected.

Therefore, in this case, step x4 in FIG.
The state is changed to the error processing of step x12. Regarding the error processing in this step x12,
Since various kinds of processing can be considered, an example will be shown below.

In the flowchart of FIG. 4 showing the control procedure of the controller 13, as a first example in the case of transition to the error processing of step x12, an LED or the like is provided in the television receiver main body, and the LED is turned on or blinks. By doing so, the viewer is urged to redirect the transmitter of the remote control in either direction of the two images again and perform the remote control operation again. As a second example, without adding a new device or parts to the television receiver main body,
Display characters, etc. on the TV screen (superimpose)
By doing so, the viewer is urged to redirect the transmitter of the remote controller in either direction of the two images and perform the remote controller operation again. Etc.

Next, another embodiment of the present invention in which three images are displayed side by side on the screen of the television receiver 16 will be described. The configuration of this embodiment is the same as that of the previous embodiment, but the control method of the controller 13, that is, the operations of the switch 8 and the mode selector 10 are different. These different points will be described below.

The switching device 8 outputs the output of the amplifier 3 or the amplifier 4, that is, the light receiving device 1 according to the state of the light receiving device switching signal 14.
Alternatively, one of the signals from the light receiver 2 is selected. The operation of the switch 8 is as shown in Table 2 above.

As can be seen from Table 2, the switch 8 selects the amplifier 3 if the input voltage of the photoreceiver switching signal 14 is a negative potential, and if the input voltage of the photoreceiver switching signal 14 is a positive potential. For example, the amplifier 4 is selected. Further, if the input voltage of the light receiver switching signal 14 is 0 potential or a minute potential, the switching device 8 becomes inoperable.

Next, the synthesizer 9 which is a control signal synthesizing means has a function of synthesizing the output signals of the amplifiers 3 and 4. The output of the switch 8 and the output of the combiner 9 are given to the mode switch 10. The mode selector 10 is the controller 1
Controlled by the mode switching signal 15 from 3
Either the switch 8 or the output of the combiner 9 is selected. The operation of the mode selector 10 is as shown in Table 3 above.

As can be seen from Table 3, the mode selector 10
Selects the output of the switch 8 when the state level of the mode switching signal 15 is L (low level), and the output of the combiner 9 when the state level of the mode switching signal 15 is H (high level). Select.

Based on the light receiver switching signal 14 from the amplitude comparator 7, the controller 13 determines which one of the light receivers 1 and 2 has the higher reception intensity or whether the light receptions 1 and 2 have substantially the same reception intensity. That is, it is determined to which position the remote control device 19 is operated relative to the two light receivers.

When the controller 13 outputs the L mode switching signal, for example, various controls are performed on the screen adjacent to the light receiver to which the remote controller 19 is directed, based on remote controller operation. There is. In addition, the controller 13
When the H mode switching signal is output, various controls based on remote control operation are performed on the only screen displayed on the CPT or the middle screen of the three screens.

FIG. 5 is a flow chart showing the processing operation of the controller 13 when three images are displayed side by side on the screen of the television receiver 16. The operation in another embodiment of the present invention will be described using this flowchart.

It is assumed that the button corresponding to the desired control item is pressed by the viewer while the remote controller 19 is aimed at the image displayed at the left end or the right end of the screen of the television receiver 16. In this case, since the difference in the amount of light received by the light receivers 1 and 2 is large, the light receiver switching signal 14 becomes a signal having a relatively large potential, the switching device 8 can accurately select the input signal, and the controller 13 also. It is possible to accurately determine which image is selected. The operation at this time is the same as that of the embodiment in which two images are displayed side by side on the screen of the television receiver 16, and therefore the description thereof is omitted.

Here, it is assumed that the viewer points the remote controller 19 at the image displayed in the center of the television screen and presses the button corresponding to the desired control item. In this case, the difference between the amounts of light received by the light receivers 1 and 2 is small, and the light receiver switching signal 14 has a potential of 0 volt or a relatively small potential. The controller 13 shifts the processing from step y4 in FIG. 5 to step y13 and confirms that three images are displayed on the television screen (step y13). The controller 13 receives the light receiver switching signal 1
If the level of 4 is 0 or a small potential, the remote controller 1
9 is determined to be directed to the center image (step y
14), based on Table 3, the level of the mode switching signal 15 is set to H (step y15).

By the mode switching signal 15 set to H, the mode selector 10 selects the signal from the combiner 9, that is, the sum signal of the photodetectors 1 and 2 as the reception data of the controller 13. The signals received by the photo detectors 1 and 2 are read by the controller 13 via the amplifiers 3 and 4, the combiner 9, the mode selector 10, the detector 11, and the waveform shaper 12, respectively (step y9). . The controller 13 controls the selected image based on the read data (step y11), and then transitions to the remote control data reception waiting state (wait state) of step y1.

In the above two embodiments, the switching device 8
Also, it is assumed that the controller 13 determines all the respective operations based on the input voltage or the input signal level of the mode selector 10. Therefore, in FIG.
The light receiver switching signal from the amplitude comparator 7 is output to the controller 13 and the switching device 8, but the judgments regarding the input voltage levels of both are completely in agreement.

Further, in the above-described first embodiment, the case where two images are displayed side by side on the screen of the television receiver has been described, but the present invention is not limited to this and, for example, a television Four images may be displayed on the screen of the John receiver. In this case, it is possible to determine which image has been selected by providing light receiving units at the four corners of the television screen and using the outputs of the four light receiving units in total.

Further, if the screen selection is performed according to the potential of the receiver switching signal 14 as in the other embodiments described above, in addition to displaying three images, six or nine images are displayed. It can also be applied when displaying images.

[0059]

As described above, according to the present invention, a television image receiver having a function of displaying a plurality of images on the screen of the television receiver and having a remote controller having a narrow directivity transmitting element. If multiple images are displayed on the screen of the television receiver on the device, determine the image selected from the transmission direction of the transmission element of the remote controller operated by the viewer and perform various controls. , When only one image is displayed on the screen of the television receiver, all the light receiving sections arranged receive the remote control transmission light from all directions to perform various controls. ,
There is an effect that an image can be easily selected and various kinds of image control can be performed without increasing the number of push buttons of the remote controller and without increasing the number of operations of the remote controller.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of a television receiver that is an embodiment of the present invention.

FIG. 2 is a display example and an external view of a television receiver according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of an amplitude comparator that is an embodiment of the present invention.

FIG. 4 is a flowchart showing a control procedure of the controller of the television receiver that displays two images in the embodiment of the present invention.

FIG. 5 is a flowchart showing a control procedure of a controller of the television receiver that displays three images in the embodiment of the present invention.

FIG. 6 is a diagram showing a display example of a conventional television receiver.

[Explanation of symbols]

1, 2 ... Photo receiver, 3, 4 ... Amplifier, 5, 6 ... LPF,
7 ... Amplitude comparator, 8 ... Switching device, 9 ... Combiner, 10 ... Mode selector, 13 ... Controller, 14 ... Photoreceiver switching signal, 15
... Mode switching signal, 19 ... Remote control device

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[Procedure amendment]

[Submission date] October 17, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

Claims (8)

[Claims] 1. A display means capable of simultaneously displaying a plurality of videos based on a plurality of television programs, and controlling the presentation of a television program corresponding to a desired video among the videos displayed on the display means. Control signal transmitting means for transmitting the control signal, one or more receiving means for receiving the control signal, and a control signal from the control signal transmitting means based on a reception result of the one or more receiving means. A transmission azimuth detecting means for detecting a transmission azimuth, a selection video deciding means for deciding the video selected by the control signal transmitting means based on the transmission azimuth detected by the transmission azimuth detecting means, and the selection video deciding means On the basis of the result of the determination, one of the one or more receiving means is selected, and the control signal from the selected receiving means is used to display the television program. Television receiver, characterized by comprising a selection control means for controlling indicates. 2. The control signal transmitting means has strong directivity, and the transmitting direction detecting means detects the transmitting direction of the control signal based on each reception level of the one or more receiving means. The television receiver according to claim 1, wherein: 3. The number of the receiving means and the number of images simultaneously displayed on the display means have a one-to-one correspondence, and each receiving means is arranged in the vicinity of each image displayed on the display means. The television receiver according to claim 2, wherein the television receiver is provided. 4. The number of the receiving means and the number of images simultaneously displayed on the display means do not have a one-to-one correspondence, and the transmission azimuth detecting means has each receiving level of the one or more receiving means. The television receiver according to claim 2, wherein the transmission azimuth of the control signal is detected by a calculation using. 5. The television receiver according to claim 1, wherein the selection control means selects the reception means having the highest reception level among the one or more reception means. 6. Instead of the selection control means, the control signals from the one or more receiving means are combined and used to present the television program based on the determination result of the selected video determining means. The television receiver according to claim 1, further comprising a synthesizing control unit for controlling. 7. A display means capable of simultaneously displaying a plurality of videos based on a plurality of television programs, and controlling the presentation of a television program corresponding to a desired video among the videos displayed on the display means. Control signal transmitting means for transmitting the control signal, one or more receiving means for receiving the control signal, and a control signal from the control signal transmitting means based on a reception result of the one or more receiving means. A transmission azimuth detecting means for detecting a transmission azimuth, a selection video deciding means for deciding the video selected by the control signal transmitting means based on the transmission azimuth detected by the transmission azimuth detecting means, and the selection video deciding means On the basis of the result of the determination, one of the one or more receiving means is selected, and the control signal from the selected receiving means is used to display the television program. Selection control means for controlling display, and synthesis control for controlling presentation of the television program by synthesizing and using the control signals from the one or more receiving means based on the discrimination result of the selection video discriminating means. And a first control means for switching and selecting between the selection control means and the synthesis control means based on the number of images displayed by the display means. 8. A second control means is provided in place of the first control means for switching and selecting between the selection control means and the synthesis control means based on a reception level of the one or more reception means. The television receiver according to claim 7, wherein the television receiver is a television receiver.