JP2006081106A - Multi-screen control device and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-screen control device capable of setting the display state of a video image screen at the time of event generation to the preference of a user. <P>SOLUTION: There are three options, a two screen display pattern, a switching display pattern, and an inquiry pattern for the display state at the time of event generation. At the two screen display pattern, both of a video image screen for a specific channel on display until then and a video image screen corresponding to an event (external input event, on-timer event, or event in CM) are displayed in two screens. At the switching display pattern, the video image screen for the specific channel is automatically switched to the video image screen corresponding to the event. At the inquiry pattern, the video image screen for the specific channel is displayed while a message inquiring whether switch-over to the video image screen corresponding to the event is performed or not is displayed simultaneously. In the processing of step S7 by a control circuit 8, the display state at the time of event generation can be set from the three options beforehand, and screen display is performed according to setting information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a multi-screen control device that performs control for displaying a plurality of screens on a display device such as a television receiver, and a display device including the multi-screen control device.

A television receiver usually includes a tuner for receiving terrestrial broadcasts of NTSC (National Television System Committee) video and one or more external input terminals, and a video screen of a broadcast channel selected (extracted) by the tuner. It has a function of switching which screen to display, a video screen input from an external input terminal.
In recent years, a wide screen capable of displaying HDTV (High Definition TV) video having an aspect ratio (16: 9) which is longer than the aspect ratio (4: 3) of the NTSC video has been provided. Television receivers (called wide televisions) are in widespread use.
In addition to the tuner receiving terrestrial broadcast, such a wide TV includes a satellite broadcast reception tuner (BS tuner), an EDTV2 broadcast reception tuner, a character broadcast decoder, a MUSE-NTSC converter, and a CATV tuner. Some have everything built in.
Furthermore, the wide TV has a multi-screen display function for simultaneously displaying on the screen a plurality of video signals out of the video signals from one or a plurality of tuners and the video signals input via the external input terminal. There is.
For example, in the two-screen display function that displays two video signals (video sources) side by side on a wide screen at the same time, the wide screen is divided into two areas on the left and right of a main (main) screen and a child (sub) screen. One of the two video signals can be displayed on the main screen (for example, the left side) and the other can be displayed on the sub-screen (for example, the right side) with substantially the same size.
Here, if an event such as the input of an external input signal or the arrival of a reserved time in the on-timer function occurs while a video signal is being displayed on the screen, a new video signal ( There is a need to display an external input signal or a reserved program video signal) on the screen without deleting the displayed video from the screen.
Conventionally, Patent Document 1 discloses a television receiver having an on-timer function that displays an image of a reserved program on a sub-screen when an on-timer reservation time comes.
Patent Document 2 discloses a display device that detects the presence or absence of a synchronization signal for each of video signals from two input systems, and displays them on two screens when both synchronization signals are detected.
Further, Patent Document 3 discloses a multi-screen output monitor system that takes out an information signal superimposed on a video signal, generates a character based on the information signal, and separately displays the video signal and the character on multiple screens. ing.
Furthermore, in Patent Document 4, when the power is turned on, the screen of the video that was selected immediately before the power is turned off is used as the parent screen, and the screen of the video that has been selected in advance for the time zone when the power is turned on is the sub-screen. A multi-screen television receiver to be displayed on is shown.
JP-A-10-322618 JP 2001-346121 A JP-A-9-65233 JP-A-8-331471

However, when an event such as the input of an external input signal or the occurrence of a reserved time in the on-timer function occurs, what type of screen display is desired differs for each user. As shown in (4) to (4), there is a problem that displaying a plurality of videos in a multi-screen uniformly in a predetermined format may not suit each user's preference.
Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a multi-screen control device capable of setting a display state of a video screen at the time of an event according to a user's preference, and the same. An object of the present invention is to provide a display device.

In order to achieve the above object, the present invention is applied to multi-screen display means capable of switching display of one video screen or simultaneous display of a plurality of video screens, or a multi-screen control device for displaying video screens on the multi-screen display means. A function for detecting the occurrence of a predetermined event, and a function for presetting display state setting information on what kind of video screen display is to be displayed on the multi-screen display means when the event is detected. When the event is detected while displaying the video screen on the multi-screen display means, one or a plurality of video screens are displayed on the multi-screen display means according to the display state setting information.
For example, when the event is detected, a setting is made in advance so that one or both of the video screen being displayed on the multi-screen display unit and the video screen corresponding to the event are displayed on the multi-screen display unit. Things.
As a result, the display state of the video screen when an event occurs can be set according to the user's preference.
Here, as the event and the video signal corresponding thereto, for example, an event that a video signal is input from an external input interface (external input terminal, etc.), its external input video signal, and the current time are preliminarily determined by an on-timer function. An event that the set reservation time is reached, a video signal reserved by the on-timer function (broadcast channel video signal, external input video signal, etc.) and the like can be considered.

In addition, a function for inputting a video signal for a plurality of channels and a television broadcast signal on which an audio signal synchronized with the video is superimposed, and one specification for displaying on the multi-screen display means from the plurality of channels in the television broadcast signal A function of selecting a channel, a function of extracting the video signal and the audio signal for a plurality of channels including the specific channel from the television broadcast signal, and the specific channel being commercial broadcast while the video screen of the specific channel is being displayed. A function for detecting the event as the event, and when the specific channel is in commercial broadcasting, the multi-screen display means is switched to the video screen of the specific channel simultaneously with the video screen of the specific channel or by switching to the video screen of the specific channel. The channel that can be displayed can be set in advance. That.
This is when the video of a channel (specific channel) selected from the television broadcast, that is, the video of a program selected by the user is displayed (viewing), and the channel becomes commercial broadcast. In addition, each video screen of the program (channel) and back program (other channels) currently being viewed can be set to automatically display in multiple screens, or automatically switched to the back program video screen. To do. This makes it possible to flexibly meet the needs of users who want to check the progress of baseball and soccer, which are back programs, while watching a drama program on a certain channel and the channel is being commercial broadcast. Yes.

  According to the present invention, the display state of the video screen at the time of an event can be set (customized) according to the user's preference. A display device or the like can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of the display device X according to the embodiment of the present invention, FIG. 2 is a flowchart showing a procedure of video display state setting processing when an event occurs in the display device X, and FIG. 4 is a diagram schematically showing a screen display in the device X. FIG.

First, the configuration of the display device X according to the embodiment of the present invention will be described using the block diagram shown in FIG.
The display device X is a television receiver having a multi-screen display function capable of simultaneously displaying a plurality of video screens.
As shown in FIG. 1, the display device X includes a plurality of tuners 1a and 1b, an external input unit 2, a video switching circuit 3, a plurality of video processing circuits 4a and 4b, a screen composition switching circuit 5, and a signal. Detection circuit 6, timing circuit 7, control circuit 8, remote control interface (I / F) circuit 9, CM detection circuit 12, monitor screen 21, audio switching circuit 10, audio processing circuit 11, and amplifier 22 and a speaker 23 are provided.
The tuners 1a and 1b receive television broadcast (terrestrial broadcast etc.) signals (hereinafter referred to as broadcast signals) received by the broadcast receiving antenna 20, and receive broadcast channel signals designated by the control circuit 8. Extracting (selecting) from the signal, extracting the video signal and the audio signal by detecting the extracted signal, and transmitting the video signal and the audio signal to the video switching circuit 3 and the audio switching circuit 10 respectively. is there.
The television broadcast signal (television broadcast signal) includes a video signal for a plurality of channels and an audio signal synchronized with the video, and the tuners 1a and 1b receive the television broadcast signal. It is an example of the signal input means to input.
The external input unit 2 receives externally input video signals and audio signals such as composite video signals and audio signals, separate video signals and audio signals (so-called S terminal signals), and the like. , An interface for transmitting them to the video switching circuit 3 and the audio switching circuit 10 respectively.
The video switching circuit 3 receives video signals from the tuners 1 a and 1 b and the video signal from the external input unit 2, and receives any two video signals from the video signals from the control circuit 8. Is output according to the instructions.

Each of the video processing circuits 4a and 4b performs various signal processing on each video signal output from the video switching circuit 3. For example, A / D conversion of a video signal, separation of horizontal and vertical synchronization signals from a video signal after A / D conversion, generation of a clock signal phase-synchronized with the synchronization signal, generation from a video signal after A / D conversion Separation of luminance signal and color signal, predetermined image quality improvement processing, processing to reduce the video after the image quality improvement processing (compress time axis), and the reduced video signal based on the clock signal in the first half of the horizontal scanning period Phase adjustment processing is performed in the (half left screen) and the latter half (right half of the screen), and the processed video signal is output to the screen composition switching means 5.
The screen composition switching circuit 5 displays one video screen on the monitor screen 21 by switching one of the video signals from each of the video processing circuits 4a and 4b and outputting it to the monitor screen 21. This is for switching whether two video screens are arranged side by side and are simultaneously displayed (screen synthesis).
For example, the reduced video signal phase-adjusted in the first half of the horizontal scanning period is input from one video processing circuit 4a, and the reduced video signal phase-adjusted in the second half of the horizontal scanning period is input from the other video processing circuit 4b. Are input to the left half and the right half of the monitor screen 21 by sequentially switching and outputting them based on the clock signals obtained from the video processing circuits 4a and 4b. Two video signals output from the circuit 3 are arranged and displayed simultaneously.
When video signals not subjected to the reduction processing are input from the video processing circuits 4a and 4b, the video switching circuit is provided in almost the entire area of the monitor screen 21 by outputting one of them. Only one of the two video signals output by 3 is displayed.
Further, the screen composition switching circuit 5 has a function of superimposing insertion information input from the control circuit 8 on an output video signal.

The monitor screen 21 is a display means including, for example, a liquid crystal panel forming a so-called wide screen and its peripheral devices, and displays a video signal output from the screen composition switching circuit 5. The monitor screen 21 is an example of a multi-screen display means that can switch between the display of one video screen or the simultaneous display of a plurality of video screens.
The signal detection circuit 6 detects an event that a video signal has been input to the external input unit 2 (hereinafter referred to as an external input event) (an example of an event detection unit).
For example, a switch for detecting whether or not a connector is connected to the input terminal constituting the external input unit 2 is provided, and whether or not a video signal is input is detected based on the detection state (ON / OFF) of the switch. Or a circuit that detects whether or not a video signal is input by detecting the presence or absence of a synchronization signal of the video signal on the signal path from the external input unit 2 to the signal video switching circuit 3. Composed.
The clock circuit 7 is a circuit that includes a clock oscillator and clocks the current time.
The control circuit 8 includes an MPU 8a that is an arithmetic means, a ROM 8b (EPROM) that is a storage means in which a control program executed by the MPU 8a is stored in advance, an EEPROM 8c that stores setting information written by processing executed by the MPU 8b, and the like. And the entire display device X is controlled.
The remote control interface circuit 9 obtains operation input information for the remote control 9a from the remote control 9a (remote operation device) for operation of the display device X by wireless transmission such as infrared transmission, and the operation input information is obtained from the control circuit. 8 is output.
For example, when channel selection is performed, operation input information for the channel selection key of the remote control 9a is input to the control circuit 8 through the remote control interface circuit 9, and the control circuit 8 according to the operation input information The channel to be selected is designated for the tuner 1a (TUNER_A), and the video processing circuit 4a and the screen composition switching circuit 5 are controlled so that the video of the channel is displayed on the monitor screen 21. The
Similarly, when volume adjustment is performed, an output volume adjustment command is sent from the control circuit 8 to the amplifier 22 in accordance with operation input information for a volume volume adjustment key (volume up key and down key) of the remote controller 9a. The output volume to the speaker 23 is adjusted by the amplifier 22 according to the command.
Note that one channel (hereinafter referred to as a specific channel) to be displayed on the monitor screen 21 (an example of multi-screen display means) from among a plurality of channels in a television broadcast signal (television broadcast signal) by the remote controller 9a. It is an example of the channel selection means to select.
The tuners 1a and 1b are an example of channel extraction means for extracting video signals and audio signals for a plurality of channels including the specific channel from the television broadcast signal.

The CM detection circuit 12 detects, as an event (hereinafter referred to as a CM event), that the specific channel is being commercial broadcast while the video screen of the specific channel is being displayed on the monitor screen 21 ( An example of event detection means).
Here, it is determined whether or not the broadcast is a commercial broadcast, for example, by determining whether or not the audio signal superimposed on the broadcast signal of the specific channel is an audio multiplexed signal (when the audio signal is an audio multiplexed signal). When the program of the specific channel is a broadcast program of a movie, the video signal is a so-called letterbox type video signal (a video signal having striped black portions at the top and bottom of the video screen). Or the like (if it is a letterbox type, it is determined that it is a movie image (not a CM)). In this case, whether or not it is a broadcast program of a movie can be determined automatically by an EPG (Electronic Program Guide) superimposed on a broadcast signal, or set according to a user's operation input.
In this embodiment, when the video signal of the specific channel is a broadcast program of a movie, it is determined whether or not the video is a CM broadcast based on whether or not the video is a letterbox type video. First, it is determined whether or not the broadcast is a CM broadcast based on whether or not the audio signal of the specific channel is an audio multiplexed signal.

The audio switching circuit 10 inputs audio signals from the tuners 1a and 1b and the audio signal from the external input unit 2, and inputs any two audio signals of the audio signals to the control circuit 8. Are output to the audio processing circuit 11 and the CM detection circuit 12, respectively. In the present embodiment, the audio signal of the specific channel is output to the CM detection circuit 12, and the audio signal corresponding to the video screen displayed in the almost entire area or the left half area of the monitor screen 21 is the audio processing. The voice switching circuit 10 is controlled so as to be output to the circuit 11.
The audio processing circuit 11 performs various signal processing on the audio signal output from the audio switching circuit 10 in accordance with an instruction from the control circuit 8. For example, equalization processing or surround processing according to the characteristics of the speaker 23 is performed.
The amplifier 22 performs a process of amplifying or attenuating the audio signal processed by the audio processing circuit 11 in accordance with an instruction from the control circuit 8 and outputs the amplified signal to the amplifier 23.
In the display device X, the remaining configuration excluding the monitor screen 21, the audio processing circuit 11, the amplifier 22, and the speaker 23 is a multi-display that displays a video screen on the monitor screen 21 (multi-screen display means). This is a part that functions as a screen control device.

Hereinafter, the function of the control circuit 8 will be described.
The control circuit 8 operates according to operation input information (information corresponding to an operation input of a channel selection key, an up key of a voice volume, or an operation input of a down key, etc.) input through the remote control 9a and the remote control interface circuit 9. Control for realizing functions provided in a normal television receiver, such as designating a channel to be selected for the tuners 1a and 1b and outputting an output volume adjustment command to the amplifier 22. It has a function.
Further, the control circuit 8 determines whether or not to reduce the video signal for each of the video processing circuits 4a and 4b, and when performing the reduction, the control circuit 8 is arranged in any of the first half and the second half of the horizontal scanning period (phase adjustment). ) To output the control signal to the screen composition switching circuit 5 to display one of the video signals from each of the video processing circuits 4a and 4b on the monitor screen 21 or A control signal is output for sequentially switching and outputting to display the multi-screen (two screens) on the monitor screen 21.
Further, a control signal for selecting (broadcasting) which broadcast channel is extracted is output to each of the tuners 1a and 1b, and the tuners 1a and 1b and the external channels are output to the video switching circuit 3. A switching signal for selecting which two video signals are selected from the video signals input from each of the input units 2 and outputting them to each of the video processing circuits 4a and 4b is output.
Further, the control circuit 8 realizes a so-called on-timer function. That is, in accordance with an operation input inputted through the remote control 9a and the remote control interface circuit 9, the setting is a reserved time and a video signal type (either broadcast channel or external input) to be displayed on the monitor screen 21 at the reserved time. The process of storing the channel in the EEPROM 8c and the current time measured by the timer circuit 7 are monitored, and when the current time becomes the reserved time, the video signal corresponding to the set channel is displayed on the monitor screen 21. The processing to be displayed on the screen is executed.
Here, the control circuit 8 and the timing circuit 7 are an example of event detection means for detecting an event that the current time has reached the reserved time in the on-timer function (hereinafter referred to as an on-timer event).

Further, when the occurrence of the event (any of the external input event, the on-timer event, or the CM event) is detected while the video screen is displayed on the monitor screen 21, the control circuit 8 A display state setting function for presetting display state setting information regarding what kind of video screen display is to be displayed on the monitor screen 21 (multi-screen display means) is realized.
Further, the control circuit 8 detects the external input event by the signal detection circuit 6 while the video screen of the specific channel is displayed on the monitor screen 21, and the on-timer by the timing circuit 7 and the control circuit 8. When either an event is detected or the CM event is detected by the CM detection circuit 12, one or more video screens are displayed on the monitor screen 21 (multi-screen display means) according to the display state setting information. Display (an example of a screen control means when an event occurs).

Hereinafter, an example of the procedure of the video display state setting process at the time of an event realized by the control circuit 8 executing a predetermined control program will be described using the flowchart shown in FIG. Note that S1, S2,... Shown below represent identification symbols of processing procedures (steps). The process shown in FIG. 2 is started when the control circuit 8 detects through the remote control interface circuit 9 that the remote control 9a has shifted to a predetermined event processing setting mode.
When it is detected that there has been an operation for shifting to the event processing setting mode, the control circuit 8 displays a video screen of a predetermined event selection menu on the monitor screen 21 through the screen composition switching circuit 5, A process of selecting an event according to the operation input information from the remote controller 9a is performed (S1), and it is determined which event is selected (S2 to S4).
Here, if the selected event is the external input event, the process proceeds to the process of step S7 described later.
If the selected event is the on-timer event, the control circuit 8 selects and activates the activation channel (broadcast channel activated (displayed) at the reserved time) in the on-timer function. After the reservation time registration process is executed (S5), the process proceeds to step S7.
In the activation channel selection process and the reservation time registration process (S5), the control circuit 8 causes the video screen related to a predetermined channel selection menu and the reservation time input screen to be displayed on the monitor through the screen composition switching circuit 5. A process of selecting the activation channel and inputting the reserved time is performed according to operation input information from the remote controller 9a, which is displayed on the screen 21.
If the selected event is the CM event, the control circuit 8 executes the back program channel selection process for the specific channel (the channel being watched) (S6), and then performs step S7. The process is moved to. This back program channel is switched to the monitor screen 21 (an example of a multi-screen display means) simultaneously with the video screen of the specific channel or by switching to the video screen of the specific channel when the specific channel is in commercial broadcasting. It is a channel to be displayed, and the back program channel can be set in advance by the processing of step S6 by the control circuit 8 (an example of display screen setting means).
In the channel selection process (S6) of the back program, the control circuit 8 displays a video screen relating to a predetermined channel selection menu on the monitor screen 21 through the screen composition switching circuit 5, and an operation input from the remote controller 9a. According to the information, a process for selecting the channel of the back program is performed.

In step S7, when the occurrence of the event selected in step S1 is detected, the video screen corresponding to the event (the screen of the external input video, the video screen of the activation channel, or the video of the channel of the back program is displayed. A process (hereinafter referred to as a display state selection process) for selecting how to display (screen) on the monitor screen 21 is executed by the control circuit 8 and further selected in step S8 in step S7. After the stored information is stored in the EEPROM 8c as display state setting information, the video display state setting process ends.
By executing the above processing in advance, the signal detection circuit, the CM detection circuit 12, etc. (an example of event detection means) while the video screen of the specific channel is being displayed on the monitor screen 21 (multi-screen display means). ), The control circuit 8 controls to display one or more video screens on the monitor screen 21 according to the display state setting information stored in the EEPROM 8c (event) An example of screen control means at the time of occurrence).

Next, an example of the display screen on the monitor screen 21 when an event occurs based on the display state setting information will be described using the schematic diagram of the display screen shown in FIG. 3A shows a state in which the video screen of the specific channel is displayed, and FIG. 3B shows a video screen of the specific channel and a video screen corresponding to the event on a two-screen display (multi-screen display). 3 (c) shows a state in which the video screen corresponding to the event is switched, and FIG. 3 (d) shows a state in which an inquiry menu (to be described later) is displayed on the video screen of the specific channel. To express.
For example, in step S7, the display state at the time of the event occurrence can be selected (set) from the three pattern options of the two-screen display pattern, the switching display pattern, and the inquiry pattern as the display state setting information. When an event is detected while the screen is displayed on the monitor screen 10, the control circuit 8 may be controlled to display the following according to the selected (set) pattern.

When the two-screen display pattern is selected, as shown in FIG. 3B, the video screen g1 of the specific channel (originally displayed) is displayed from the display state of the video screen g1 of the specific channel shown in FIG. The middle video screen) and the video screen g2 corresponding to the event are both displayed on the monitor screen 21 (simultaneously displayed).
Here, the control circuit 8 displays one or both of the video screen g1 of the specific channel and the video screen g2 corresponding to the event on the screen of the monitor screen 21 displayed on the two screens. If the selection menu g3 regarding whether to leave is displayed at the same time, the operability of subsequent display switching by the user is enhanced, which is preferable. At this time, the audio switching circuit 10 is controlled by the control circuit 8 so that the audio signal of the specific channel is output to the speaker 23.
When a selection input is made for the selection menu g3, a video screen according to the selection input is displayed on the monitor screen 21. In the example shown in FIG. 3B, each time the arrow key or the like provided on the remote controller 9a is operated by the control circuit 8, the selection cursor g31 is sequentially moved to each option and provided on the remote controller 9a. When the determination key or the like is operated, the option set with the selection cursor g31 at that time is processed as being selected.
Further, as shown in FIG. 3 (b), the control circuit 8 displays on the monitor screen 21 the video screen corresponding to the specific channel and the video screen corresponding to the event. "A", "B") are added and displayed, and the selection menu g3 using the identification information is displayed. As a result, the correspondence between the options in the selection menu g3 and each screen can be grasped at a glance, so that it is easy to understand.
Here, the identification information includes not only simple codes such as “A” and “B”, but also “original screen” and “new screen”, and input sources of video signals displayed on each screen (“line input 1”). ”,“ L1 ”,“ VHS broadcast ch2 ”,“ V2 ”,...), Etc.

Further, when the switching display pattern is selected, the video screen g1 (FIG. 3A) of the specific channel is automatically switched to the video screen g1 corresponding to the event (FIG. 3C).
On the other hand, when the inquiry pattern is selected, whether or not to switch to the video screen corresponding to the event in a state where the video screen g1 of the specific channel is displayed as shown in FIG. The inquiry message g4 is simultaneously displayed (superimposed).
When an operation input for the inquiry message g4 is performed, a video screen corresponding to the operation input (either the video screen g1 of the specific channel or the video screen g2 corresponding to the event) is the monitor screen 21. Is displayed. In the example shown in FIG. 3D, the inquiry message g4 is instructed to switch the screen when the enter key or the like provided on the remote control 9a is operated, and the cancel key or the like is operated. If so, it is processed as an instruction that the screen switching is not performed (the display of the video screen g1 of the specific channel is continued).

Any video screen display on the monitor screen 21 (an example of multi-screen display means) when an event is detected by the processing of steps S1 to S8 by the control circuit 8 (an example of display state setting means) described above. It is possible to preset the display state setting information on whether or not to perform (customize according to user's preference), so that it is possible to configure a highly convenient display device that meets the needs of various users .
In each pattern preset in the process of step S7 by the control circuit 8 (an example of display state setting means), the switching pattern and the inquiry pattern are displayed on the monitor screen 21 when the event is detected. This is an example of an option for displaying either the currently displayed video screen or the video screen corresponding to the event on the monitor screen 21, and the two-screen display pattern displays both video screens on the monitor screen 21. It is an example of the option to be made.

In the above-described embodiment, an example of application to a television receiver (display device) has been described. However, the present invention is not limited to this. For example, among the configurations excluding the components 11, 22, and 23 related to audio output in the display device X , A configuration in which the monitor screen 21 is replaced with a video signal output interface to the monitor screen (an example of a multi-screen control device) is provided in a tuner such as a recording device (video deck, DVD device, etc.), BS tuner, CATV tuner, etc. Embodiments are also conceivable.
In the above-described embodiment, an example of multi-screen display that switches between single-screen display and left-right two-screen display has been described. For example, single-screen display and two-screen display that simultaneously displays a window screen on a part of the screen display. One that performs switching, and one that performs a multi-screen display of three or more screens that simultaneously display a plurality of video screens corresponding to a plurality of events (an example of a second video screen) are also conceivable.

  The present invention can be used for a display device, a recording device, a tuner and the like having a multi-screen control function.

1 is a block diagram illustrating a schematic configuration of a display device X according to an embodiment of the present invention. 7 is a flowchart showing a procedure of video display state setting processing when an event occurs in the display device X. The figure which represented the screen display in the display apparatus X typically.

Explanation of symbols

X ... Display devices 1a, 1b ... Tuner 2 ... External input unit 3 ... Video switching circuits 4a, 4b ... Video processing circuit 5 ... Screen composition switching circuit 6 ... Signal detection circuit 7 ... Timing circuit 8 ... Control circuit 9 ... Remote control interface circuit 9a ... Remote control 10 ... Audio switching circuit 11 ... Audio processing circuit 12 ... CM detection circuit 21 ... Monitor screen g1 ... Video screen of a specific channel (video screen currently being displayed)
g2 ... Video screen corresponding to the event g3 ... Selection menu g4 ... Inquiry message S1, S2, ... Step (processing procedure)

Claims (4)

A multi-screen control device for displaying a video screen on a multi-screen display means capable of switching display of one video screen or simultaneous display of a plurality of video screens,
Event detection means for detecting occurrence of a predetermined event;
Display state setting means for presetting display state setting information about what video screen display is to be displayed on the multi-screen display means when the event is detected;
When an event occurs that causes the multi-screen display unit to display one or more video screens according to the display state setting information when the event is detected by the event detection unit while displaying the video screen on the multi-screen display unit Screen control means;
A multi-screen control device comprising:   The display state setting means causes the multi-screen display means to display one or both of a video screen being displayed on the multi-screen display means and a video screen corresponding to the event when the event is detected. The multi-screen control device according to claim 1, which is set in advance as described above. A signal input means for inputting a television broadcast signal on which a video signal for a plurality of channels and an audio signal synchronized with the video are superimposed;
Channel selection means for selecting one specific channel to be displayed on the multi-screen display means from among a plurality of channels in the television broadcast signal;
Channel extraction means for extracting the video signal and / or the audio signal for a plurality of channels including the specific channel from the television broadcast signal,
The event detecting means has a function of detecting, as the event, that the specific channel is being commercial broadcast while the video screen of the specific channel is being displayed;
The display screen setting means can set in advance a channel to be displayed on the multi-screen display means simultaneously with the video screen of the specific channel or when switching to the video screen of the specific channel when the specific channel is in commercial broadcasting. The multi-screen control device according to claim 1 or 2.   A multi-screen display means capable of simultaneously displaying a plurality of video screens, and a multi-screen control device according to any one of claims 1 to 3 for causing the multi-screen display means to display a video screen. Characteristic display device.

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