JPH05207320A - Television receiver - Google Patents

Abstract

PURPOSE:To turn the channel of a slave screen by transmitting the channel turning signals of a television and a VTR by the tuning operation of a remote controller in the two screen display of the television. CONSTITUTION:At the time of operating the slave screen channel tuning button of a remote controller commander 3, a pair of the slave screen channel tuning signal of a television main body 1 and the reception channel tuning signal of a VTR 2 are outputted and the channel of the slave screen is tuned. Only when a signal power source of the display of the slave screen is a tuner mounted on the television, the television main body 1 controls the pertinent tuner.

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 parent-child two-screen display function, and relates to a remote control of a child screen.

[0002]

2. Description of the Related Art Conventionally, a PI that reduces one of two types of video signals and inserts it into one of the four corners of a television screen.
There is P (Picture In Picture). In this case, as a signal source for the sub-screen, the spread has been delayed due to the reason that there is only video input from a connected VTR or the like unless two sets of V / U tuners are built in the television. In recent years, satellites (BS, C
S) The era of multimedia has arrived with the start of broadcasting,
Due to the widespread use of televisions and VTRs with a built-in BS tuner, technological advances such as digital processing of image signals and high integration of ICs, and the enlargement of television screens, PI
The function of P has received attention and its needs have increased rapidly. When a BS tuner is installed in a TV or VTR, while watching a target program, for example, a BS broadcast on the BS tuner installed in the TV, the V / U tuner, V
A program by TR V / U or BS tuner can be displayed. That is, a tuner installed in a TV / VTR can be selected / tuned to, and a parent-child screen can be configured in various combinations.

In general, the usage of the two-screen display function is to watch a target program on the main screen and check other programs by using the sub-screen, and the program of the sub-screen is selected by the remote controller. .. First, a button for instructing dual-screen display on the remote control / commander is operated to display a sub-screen, and then the type of signal of the sub-screen (a tuner mounted on a television or a VTR or the like) is selected. The channel selection of the selected tuner is performed by selecting and operating the corresponding channel selection button depending on whether the selected tuner has a TV or a VTR. In this case, since the program check on the sub-screen is performed relatively frequently, it is necessary to check the type of signal on the sub-screen and select the channel selection button on the TV or VTR to operate each time. This is a very troublesome work, and therefore, there is a problem that the convenient function of turning corners cannot be easily used by anyone.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when the child screen channel selection button of the remote control commander for controlling the VTR of the TV body and the connection is operated, the TV body and the VTR are operated. The present invention provides a television receiver configured to output a pair of channel selection signals for switching the reception channels to control the television body and the VTR, respectively, and select the channel of the sub-screen.

[0005]

In order to solve the above problems, the present invention provides a television receiver having a parent-child two-screen display function and controlling a television body and a VTR connected to the television body by a remote controller. In remote control and commander, a remote screen input / off button for instructing dual screen display, a switching button for switching the type of signal source of the remote screen, and a channel selection button for selecting the channel of the secondary screen are provided. Remote controller·
Based on the operation of the tuning button on the commander, the sub-screen channel selection signal of the TV body and the reception channel selection signal of the VTR are output as a pair, and the signal source displayed on the sub-screen is the built-in television body. The present invention provides a television receiver composed of a television main body adapted to process a received tuning signal and control the tuner only in the case of the tuner.

[0006]

With the above construction, in the television receiver according to the present invention, when the sub-screen channel selection button of the remote controller / commander for controlling the TV main body and VTR is operated, the sub-screen channel selection signal of the TV main body is operated. And V
The reception channel tuning signal of TR is output as a pair,
Select a channel on the inset screen. At this time, the TV body controls the tuner only when the signal source displayed on the sub-screen is the tuner installed in the TV, and does not accept the tuner at other times.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a television receiver according to the present invention will be described below in detail with reference to the drawings. 1 is a block diagram of a main part of an embodiment of a television receiver according to the present invention, FIG. 2 is an embodiment of a sub-screen operation key of a remote control commander according to the present invention, and FIG. 3 is a transmission signal by key operation of a remote control commander. FIG. 4 is a flowchart for explaining the operation of the television main body controller. In FIG. 1, reference numeral 1 is a television main body, to which a VTR 2 is connected. A remote control commander 3 outputs control signals for the TV main body 1, the VTR 2 and the child screen. Reference numeral 4 is a V / U tuner, and 5 is a BS tuner, each of which is a tuner with a built-in television. A video input terminal 6 is connected to the VTR 2. 7 is a signal processing unit,
Two types of video signals are processed and combined into a two-screen video signal. A display unit 8 displays an image of two screens or the like generated by the signal processing unit 4. 9 is a remote control receiver,
The control signal from the commander 3 is received. 10 is a control unit,
It is composed of a control microcomputer or the like, and controls each of the above-mentioned parts of the television body 1. Next, 11 is the VTR body, 12 is the built-in V / U
It is a BS tuner. 13 is a remote control receiver,
The control signal from the commander 3 is received. Reference numeral 14 denotes a video output terminal, which is connected to the video input terminal 6 of the television with a pin cord or the like. Next, 15 of the remote commander / commander 3 is an operation unit, which is composed of function keys, numeral keys, etc.
It has an input key for controlling a small screen together with the R2 control key. Reference numeral 16 is a control signal generation unit, which is composed of a one-chip microcomputer or the like, and generates a control signal corresponding to a key input. An LED (light emitting diode) 17 converts a control signal from the control signal generation unit 16 into an infrared signal and outputs the infrared signal. In FIG. 2, reference numeral 18 is a small screen on / off button, 19 is a mode switching button for switching the kind of the small screen signal source, and 20a / 20b are channel up / down buttons for selecting the small screen channel.

Next, the operation of the remote control commander 3 of the television receiver according to the present invention will be described. First, when the child screen ON / OFF button 18 of the commander is operated, a control signal for dual screen display is sent out, and the screen returns to the dual screen in the normal display and returns to the normal display in the dual screen display. The previously displayed signal source is selected and displayed on the child screen. Next, the mode switching button 19 is operated to select the signal source of the small screen. The signal source is, for example, TV (V / U tuner 4) → satellite (BS tuner 5) →
Video (video input terminal 6) → TV, etc. can be switched in this order,
Select the desired signal source. Therefore, when the channel up / down buttons 20a / 20b are operated, a pair of tuning signals as shown in FIG. 3 are automatically transmitted continuously. That is,
The first signal a is, for example, a sub-screen channel selection signal of the television main body, and the next signal b is a VTR reception channel channel selection signal, which is sent to the television main body 1 and the VTR 2 at intervals of approximately 110 ms. These signals are composed of a reader and data, and the reader is used for identifying the remote control signal, and the data is composed of a maker code, a model code, a control code and the like.

Next, the operation of the television body 1 will be described with reference to FIG. When the sub-screen tuning signal is received from the remote controller / commander 3 (ST1), the control unit 10 checks whether the mode is the two-screen display mode (ST2). If it is not the two-screen display mode, it is processed as an erroneous operation and the operation returns to the monitoring operation of the remote control signal. If it is in dual screen display mode (ST2, YES), check whether the signal source of the inset screen is a tuner with a built-in TV (ST
3). If the tuner is not a built-in television, the child screen signal is processed as a video (video input terminal 6) signal and the operation returns to the monitoring operation of the remote control signal. If it is a tuner with a built-in TV (ST3, YES), the tuner (V / U tuner 4 or BS tuner 5) based on the received tuning signal data
Channel up / down is selected (ST4).

On the other hand, the VT receiving the tuning signal of the remote controller
R2 selects up / down the channel of the tuner (V / U / BS tuner 12) being received. Therefore, VTR2
If you are using the to check the program on the sub-screen, you can switch the channel of the sub-screen. If recording is being checked by the sub screen during recording, the VTR during recording does not accept the channel selection signal, so even if the sub screen selection button is mistakenly operated, the recording will be interrupted. Does not happen.

[0011]

As described above, in the television receiver according to the present invention, when the child screen channel tuning button of the remote control commander is operated, a tuning signal for switching the receiving channel of the TV body and the connected VTR is generated. Each is output and the channel of the sub screen is switched. Therefore,
The user does not have to bother with checking the type of the signal source of the child screen and selecting an operation button, and anyone can use the dual-screen display function.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of an embodiment of a television receiver according to the present invention.

FIG. 2 shows an embodiment of a sub-screen operation key of the remote control commander 3 according to the present invention.

FIG. 3 shows an embodiment of a transmission signal by a key operation of a remote control commander 3.

FIG. 4 is a flowchart for explaining the operation of the control unit 10 of the television body 1.

[Explanation of symbols]

 1 TV main body 2 VTR 3 Remote control commander 4 V / U tuner 5 BS tuner 6 Video input terminal 7 Signal processing section 8 Display section 9 Remote control receiving section 10 Control section 11 VTR main body 12 V / U / BS tuner 13 Remote control receiving section 14 Video output terminal 15 Operation part 16 Control signal generation part 17 LED

Claims (1)

[Claims] 1. In a television receiver having a parent-child two-screen display function and controlling a TV body and a VTR connected to the TV body by a remote controller, a child screen ON / OFF button for instructing two-screen display , A remote control commander provided with a switching button for switching the type of signal source of the sub-screen and a tuning button for selecting the channel of the sub-screen, and the television based on the operation of the tuning button of the remote-control commander. Outputs a channel selection signal for the sub-screen of the main unit and a reception channel selection signal for the VTR as a pair, and processes the received tuning signal only when the signal source displayed on the sub-screen is the tuner built in the TV main unit. And a television body configured to control the tuner.