KR20040078271A - Pip display apparatus controlled by remote controller - Google Patents

Abstract

PURPOSE: A PIP(Picture In Picture) display system controlled by a remote controller is provided to easily shift a channel using the remote controller. CONSTITUTION: A PIP display system includes a remote controller(100) and a display device(200). The remote controller has a function key, emits a laser signal when the function key is pushed, and transmits an infrared signal corresponding to the function key. The display device includes a display unit(240) for displaying an image corresponding to a video signal, a plurality of receivers(210) for receiving the laser signal from the remote controller, an infrared receiver(220) for receiving the infrared signal from the remote controller, and a controller(230). The controller outputs a video signal corresponding to one of the plurality of receivers, which receives the laser signal from the remote controller, to the display unit when the infrared receiver receives the infrared signal while one of the receivers receives the laser signal.

Description

PIP DISPLAY APPARATUS CONTROLLED BY REMOTE CONTROLLER} Controlled by a Remote Controller

The present invention relates to a picture in picture (PIP) display device, and more particularly, to a PIP display device controlled by a remote controller.

PIP refers to a function of simultaneously displaying two or more screens using one display device. Televisions with a PIP function display two or more channels simultaneously on one screen. The number of channels that can be displayed on one television corresponds to the number of built-in tuners. For example, two tuners are required to display two screens.

On the other hand, most modern televisions are designed to be controlled by a remote controller. The remote controller is equipped with keys for powering on / off the television, changing the channel, adjusting the volume and adjusting the brightness. Therefore, the user can easily adjust the state of the television by using the remote controller.

An object of the present invention is to provide a PIP display apparatus that can change the channel in an easy way using a remote controller.

Another object of the present invention is to provide a PIP display apparatus capable of outputting a sound corresponding to a selected screen among a plurality of simultaneously displayed screens.

1 shows the appearance of a television and a remote controller according to a preferred embodiment of the present invention;

2 is a block diagram showing an internal circuit configuration of a remote controller and a display device according to a preferred embodiment of the present invention;

3 is a view illustrating a connection relationship between a laser receiver and a main controller shown in FIG. 2; And

4 is a flowchart showing a control procedure of a television according to a preferred embodiment of the present invention.

* Description of the main parts of the drawings

100: remote controller 110: keypad

120: laser emitter 130: infrared transmitter

200: display device 210: laser receiver

220: infrared receiver 230: main controller

240: display unit 250: speaker

(Configuration)

According to a feature of the invention for achieving the above object, a display system having a picture in picture (PIP) function comprises: a function key, which emits a laser signal when the function key is pressed and the function A remote controller for transmitting an infrared signal corresponding to a key and a display device controlled by the remote controller. The display device includes a display unit for displaying an image signal, a plurality of receivers arranged in rows and columns on a surface of the display device, for receiving a laser signal from the remote controller, and from the remote controller. An infrared receiver for receiving an infrared signal and a receiver for receiving the laser signal when the infrared receiver receives an infrared signal corresponding to the function key while any one of the receivers receives the laser signal And a controller for displaying a corresponding video signal on the entire screen of the display unit.

In a preferred embodiment, the controller controls the video signals corresponding to the preset screen division number to be simultaneously displayed on the display unit when the function key is pressed.

In a preferred embodiment, the display device further comprises a speaker for outputting a sound signal corresponding to the video signal.

In this embodiment, the controller controls the sound signal corresponding to the receiver receiving the laser signal to be output through the speaker when any one of the receivers receives the laser signal.

In a preferred embodiment, the remote controller further comprises a screen switch key for switching screens displayed simultaneously on the display unit.

(Example)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As is well known, display devices employing the PIP function include televisions or liquid crystal display (LCD) displays. In this embodiment, the television is described as an example.

1 shows the appearance of a television and a remote controller according to a preferred embodiment of the present invention.

Referring to FIG. 1, the remote controller 100 includes a keypad 110 on which a plurality of keys 111-114 are arranged, a laser emitter 120, and an infrared transmitter 130. The power on / off key 111 is a key for turning on / off the power of the television 200. The function key 112 is a key for selecting a laser function and for enlarging the selected screen. The function key 113 is a key for selecting the number of screen divisions. The screen change keys 114 are used to change the selected screen or change the channel. In this embodiment, the remote controller 100 includes only three function keys 111-114. However, the keys necessary for operating various additional functions, for example, volume control, channel change, brightness control, etc. The keys may further include.

The laser emitter 120 emits a laser signal corresponding to the pressing of the function key 112. The laser signal emitted from the laser emitter 120 is received by the laser receiver 210 of the television 200. The infrared ray transmitter 130 emits an infrared signal corresponding to the pressing of the power on / off key 111 and the function keys 113 to 114. The infrared signal transmitted from the infrared transmitter 130 is received by the infrared receiver 220 of the television 200.

The laser receiver 210 of the television 200 includes sixteen receivers CH01-CH16 equally divided into rows and columns. Each receiver is arranged in the form of a transparent circuit on the display area for displaying an image of one channel.

2 is a block diagram illustrating an internal circuit configuration of a remote controller and a display device according to an exemplary embodiment of the present invention. Referring to FIG. 2, the remote controller 100 includes a keypad 110, a laser emitter 120, and an infrared transmitter 130. The display apparatus, that is, the television 200 includes a laser receiver 210, an infrared receiver 220, a main controller 230, a display unit 240, and a speaker 250. The main controller 230 includes a plurality of tuners 231. The number of tuners 231 included in the main controller 230 corresponds to the number of screens to be simultaneously displayed on the display unit 240.

When the keys related to the laser emission of the keys provided on the keypad 110 of the remote controller 100 are pressed, the laser emitter 120 emits a laser signal corresponding to the pressed key. The laser signal emitted from the laser emitter 120 is received by the laser receiver 210 of the television 200. The laser receiver 210 includes 16 receivers CH01-CH16 as shown in FIG. 3. Each of the receivers CH01-CH16 is connected to the main controller 230. For example, when the laser signal emitted from the laser emitter 120 is received at the receiver CH01, the receiver CH01 transmits the received signal to the main controller 230.

When keys related to infrared transmission are pressed among the keys provided on the keypad 110 of the remote controller 100, the infrared transmitter 130 transmits an infrared signal corresponding to the pressed key. The infrared signal transmitted from the infrared transmitter 130 is received by the infrared receiver 220 of the television 200. The infrared receiver 220 transmits a received signal corresponding to the received infrared signal to the main controller 230.

In general, a television employing the PIP function (hereinafter, PIP television) displays only one channel signal on the display unit 240 as a normal television, and the user generates a sound corresponding to the speaker unless the user selects the PIP function. Output through 250. If the user selects the PIP function and the number of display screens, as many screens as the selected number are displayed on the display unit 240 at the same time. For example, as shown in FIG. 1, if the number of screens that can be simultaneously displayed on the display unit 240 is 16, the main controller 230 should include 16 tuners 231 and the user can display the screen. If the number is selected as 16, all 16 tuners 231 should operate.

The operation of the PIP television of the present invention having the configuration as described above will be described with reference to FIG. In the initial state, it is assumed that the television 200 is in a power-off state. In step S300, when the power on / off key 120 provided in the remote controller 100 is pressed by the user, the infrared transmitter 130 powers on. Infrared signal for transmitting. The infrared receiver 220 transmits a control signal corresponding to the received power on signal to the main controller 230. The main controller 230 controls the display apparatus 200 to be in a power-on state.

In step S310, the user presses the function key 113 to select the screen division number. When the function key 113 is pressed, the infrared ray transmitter 130 transmits an infrared signal corresponding to the pressed function key 113. The main controller 230 stores the screen division number received through the infrared receiver 220 in a buffer (or memory).

In step S320, the user presses a function key 112 to select the PIP function.

In operation S330, the main controller 230 displays the channels corresponding to the screen division number selected in operation S310 on the display unit 240 in response to the pressing of the function key 112. For example, if the number of screen divisions selected in step S310 is 16, 16 channels are displayed on the display unit 240. As the function key 112 is pressed, the laser emitter 120 emits a laser signal.

In step S340, if the user presses the screen switch key 114 to switch the screen, the control proceeds to step S350. In operation S350, the main controller 230 displays the converted screens on the display unit 240. When the screen switch key 114 is pressed when the number of channels provided by wire or wirelessly is greater than the number of screens displayed on the display unit 240 simultaneously, the main controller 230 shifts the displayed screens by one channel. It displays on the display unit 240.

In operation S360, the main controller 230 determines whether any one of the receivers CH01-CH16 included in the laser receiver 210 receives the laser signal. As described above, when the screen zoom key 112 is pressed, the laser emitter 120 of the remote controller 100 emits a laser signal. At this time, the user points the laser emitter 120 of the remote controller 100 to face the desired screen among the 16 screens displayed on the television 200. Then, the laser emitted from the laser emitter 120 of the remote controller 100 is received by the receiver arranged on the screen selected by the user. For example, assume that the user orients the laser emitter 120 of the remote controller 100 to face the receiver CH01 corresponding to the first channel. The receiver CH01 corresponding to the first channel receives the laser signal and informs the main controller 230 that the laser signal has been received.

In operation S370, the main controller 230 outputs a sound of a screen corresponding to the receiver that receives the laser signal through the speaker 250.

In step S380, the main controller 230 determines whether the function key 112 is pressed while any one of the sixteen receivers CH01-CH16 is receiving the laser signal. If the function key 112 is pressed while any one of the sixteen receivers CH01-CH16 is receiving the laser signal, the control proceeds to step S390.

In operation S390, the main controller 230 enlarges and displays the screen corresponding to the receiver receiving the laser signal to the full screen size of the display unit 240. For example, when the user grabs the remote controller 100 and presses the function key 112 so that the laser emitted from the remote controller 100 is received at the second screen, that is, the receiver CH02, the second screen is displayed on the display unit 240. Zoom in to full screen size. Then, the laser emission unit 120 of the remote controller 100 stops laser emission.

While the invention has been described using exemplary preferred embodiments, it will be understood that the scope of the invention is not limited to the disclosed embodiments. Accordingly, the claims should be construed as broadly as possible to cover all such modifications and similar constructions.

According to the present invention, a channel can be changed in an easy manner by using a remote controller in the PIP display apparatus. In addition, a sound corresponding to a selected screen among a plurality of screens simultaneously displayed on the PIP display apparatus may be output.

Claims (5)

For display systems with Picture In Picture (PIP): A remote controller having a function key, emitting a laser signal when the function key is pressed and transmitting an infrared signal corresponding to the function key; And A display device controlled by the remote controller; The display device, A display unit for displaying a video signal; A plurality of receivers arranged in rows and columns on a surface of the display device for receiving a laser signal from the remote controller; An infrared receiver for receiving an infrared signal from the remote controller; And When the infrared receiver receives an infrared signal corresponding to the function key while any one of the receivers receives the laser signal, an image signal corresponding to the receiver which receives the laser signal is displayed on the full screen of the display unit. And a controller to display on the display system. The method of claim 1, And the controller controls the video signals corresponding to a preset screen division number to be simultaneously displayed on the display unit when the function key is pressed. The method of claim 1, The display apparatus further comprises a speaker for outputting a sound signal corresponding to the video signal. The method of claim 3, wherein And the controller controls a sound signal corresponding to the receiver receiving the laser signal to be output through the speaker when any one of the receivers receives the laser signal. The method of claim 1, And the remote controller further comprises a screen switch key for switching screens displayed simultaneously on the display unit.