KR0131980B1 - Method and apparatus for displaying double pip - Google Patents

Abstract

A method and an apparatus for displaying a double PIP using a VCR having two image signal outputting port is disclosed. The method for displaying the double PIP comprises a step of checking a double PIP switching signal input state; a step of selecting one image signal from two VCR channel signals and one TV channel signal; and a step of displaying the selected image signal as a main picture and displaying the remainders as a subsidiary picture.

Description

Double PIP Display Method and Device

1 is a block diagram showing the configuration of a double PIP display autonomous according to the present invention,

2 is a flowchart for performing a double PIP display method according to the present invention.

＊ Explanation of symbols on main parts of drawing

10: TV unit 20: VCR unit

30: keypad 40: micom

50: screen divider

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for displaying a picture in picture (PIP), and more particularly, to a television (television) using a video cassette recorder having two channels. The present invention relates to a double IP display method and apparatus capable of extending IP functions.

In general, the PIP function refers to a function that displays a mother screen and a SUB screen on one monitor by synchronizing and combining two asynchronous signals using a memory area corresponding to several fields. However, since the conventional PIP function is implemented using one tuner of TV and one tuner of video cassette recorder, that is, two, only two channels can be selected and only two PIP screens can be viewed. Therefore, if you want to watch a plurality of PIP screens, for example, if you want to watch the video signal input from the three channels using the two sub-screens by adding a tuner to the TV, one mother screen and two It can be divided and watched at the same time. However, adding a tuner to the TV is not only expensive to manufacture, but also causes a problem that the overall system becomes bulky. Accordingly, an object of the present invention is to provide a double PIP display method and apparatus capable of displaying a plurality of PIP screens using a video cassette recorder. A feature of the present invention for achieving the above object is to connect the video cassette recorder provided with two channels and the TV on which one tuner is attached to the video cassette recorder according to the operation state of the PIP switch and the double PIP switch. A method of dividing a video signal provided from two channels and a video signal provided from the TV into a mother screen and a child screen, wherein the PIP switch is provided when the PIP switch is not operated by checking an operation state of the PIP switch. Displaying a video signal and checking an operation state of the double IP switch when the IP switch is operated; A second step of selecting one channel from a video signal provided from two channels of the video cassette recorder and a video signal provided from one channel of the TV when the double PIP switch is operated in the first step; A third step of displaying an image signal provided from the channel selected in the second step on a mother screen and displaying an image signal provided from two other channels not selected on the own screen; And when the double PIP switch is not operated in the first step, selects a video signal of one channel among the video signal provided in one of two channels of the video cassette recorder and the video signal provided in one channel of the TV. And a fourth step of displaying on the mother screen and displaying the video signal of the other channel on the mother screen.

In order to achieve the above object, another feature of the present invention includes a TV unit having one tuner and receiving and providing a video signal of a channel selected by tuning a corresponding channel among a plurality of channel video signals provided through an antenna; A VCR unit having a plurality of channels and a plurality of decks, and recording video signals provided from the plurality of channels to the plurality of decks and reproducing the recorded video signals; A keypad for providing operation signals of the IP switch and the double IP switch according to a user's control command; A microcomputer providing a screen division control signal corresponding to an operation signal of a PIP switch and a double PIP switch provided from the keypad and a video signal provided from the TV unit and the VCR unit; And dividing the screen into a mother screen and a child screen according to the screen division control signal provided by the microcomputer, and displaying an image signal corresponding to the mother screen among the image signals provided by the microcomputer on the mother screen and an image signal corresponding to the mother screen. Includes a screen divider for displaying on the child screen.

Other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

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

FIG. 1 is a block diagram showing a configuration of a double PIP display device according to an exemplary embodiment of the present invention, and includes a TV unit 10 that receives and provides a broadcast signal of a corresponding channel, and includes two channels. The VCR unit 20 which records the provided video signal and reproduces the recorded video signal, provides the keypad 30 for providing a user's control command, and the video signals provided by the TV unit 10 and the VCR unit 20. The microcomputer 40 controls to process multiple screens, and the screen splitter 50 divides the monitor screen into multiple screens under the control of the microcomputer 40.

A detailed description of the operation of the double PPI device according to the present invention configured as described above is as follows. The TV unit 10 selects a corresponding channel among a plurality of broadcast signals provided through an antenna (not shown), receives a broadcast signal, and then provides the broadcast signal V0 to the microcomputer 40. In addition, the VCR unit 20 shown in the drawing is provided with two channels and two decks as described above, and is configured to record broadcast signals received through each channel on each of the decks, and also on each deck. The reproduced video signals V1 and V2 are reproduced and provided to the microcomputer 40. Accordingly, the microcomputer 40 divides the video signals provided from the TV unit 10 and the VCR unit 20 into a mother screen and a child screen so as to correspond to a user's control command provided through the keypad 30. When the control signal is provided to the division unit 50. That is, the microcomputer 40 controls to divide and display the mother screen and the child screen so as to correspond to the operation result of the switch when the PIP switch and the double PIP switch according to the user's control command are operated through the keypad 30. The signal is provided to the screen splitter 50, and the video signal provided from the TV 10 and the VCR 20 is provided to the screen splitter 50.

Accordingly, the screen splitter 50 divides the monitor into the mother screen and the child screen under the control of the microcomputer 40, and displays the video signal corresponding to the mother screen among the image signals provided from the microcomputer 40 on the mother screen. The video signal corresponding to the screen is displayed on the child screen.

2 is a flowchart for performing a double PIP display method according to the present invention, which will be described in detail with reference to the block diagram shown in FIG. The microcomputer 40 determines whether a signal is provided according to the operation result of the IP switch according to the user's control command through the keypad 30 in step 210. As a result of the determination, if a signal corresponding to the operation result of the PIP switch is provided, the process proceeds to step 220. If a signal according to the operation result of the PIP switch is not provided, the process proceeds to step 290 and displays the provided video signal on the screen.

At this time, in step 220 it is determined whether a signal for the operation result of the double IP switch from the keypad 30 is provided. As a result of the determination, when a signal for the operation result of the double PIP switch is provided, the microcomputer 40 may select any one of a video signal provided from one channel of the TV unit 10 and a video signal provided from two channels of the VCR unit 20. The video signal of the channel is selected and displayed on the mother screen, and the screen split control signal is provided to the screen divider 50 to display the video signals provided on the two unselected channels on the mother screen (step 230).

In this case, the screen division unit 50 divides one mother screen MAIN and two sub-screens SUB according to the screen division control signal provided by the microcomputer 40, and then selects one by the microcomputer 40. The video signal provided from the channel of the display is displayed on the mother screen, and the video signal provided from one channel not selected is displayed on the mother screen (steps 240, 250, 290).

On the other hand, if a signal for the operation result of the double PIP switch is not provided from the keypad 30 in step 220, the process proceeds to step 260 and the video signal and TV unit provided in one of the two channels of the VCR unit 20 ( 10) Selects a video signal provided from one channel among the video signals provided in 10) and displays it on the mother screen, and displays a screen split control signal so that the video signal provided from another channel not selected is displayed on its own screen. Provided by 50.

Accordingly, the screen splitter 50 divides one mother screen and one child screen according to the screen division control signal provided by the microcomputer 40, and then the image provided from one channel selected by the microcomputer 40. The signal is displayed on the mother screen, and the video signal provided from the other channel is displayed on the mother screen (steps 270, 280, and 290).

Meanwhile, in the above-described embodiment, the image signal is displayed on three divided screens by the double PIP function. However, when the output of the image signal displayed on the three screens is provided to the input terminal of the video cassette recorder, the three signals are simultaneously displayed. It is also possible to record the video signal displayed through the divided screen to a video cassette recorder.

As described above, the double PIP display method and apparatus according to the present invention can expand the PIP function of the TV without adding the tuner of the TV by using the video cassette recorder of two channels, so that the utilization efficiency is improved. There is an effect that can be improved and the production cost can be reduced.

Claims (2)

A video cassette recorder provided with two channels and a TV equipped with a tuner are connected to each other so that the video signal provided by the two channels of the video cassette recorder and the TV are provided according to the operation state of the PIP switch and the double PIP switch. A method of dividing an image signal into a mother screen and a child screen, the method comprising: checking an operation state of the PIP switch to display a video signal provided when the PIP switch is not operated, and when the PIP switch is operated, A first step of checking an operation state of the double PIP switch; A second step of selecting one channel from a video signal provided from two channels of the video cassette recorder and a video signal provided from one channel of the TV when the double PIP switch is operated in the first step; A third step of displaying an image signal provided from the channel selected in the second step on a mother screen and displaying an image signal provided from two other channels not selected on the own screen; And when the double PIP switch is not operated in the first step, selects a video signal of one channel among the video signal provided in one of two channels of the video cassette recorder and the video signal provided in one channel of the TV. And displaying a mother screen and displaying a video signal of another channel on a child screen. A TV unit having a tuner and receiving and providing a video signal of a channel selected by tuning a corresponding channel among a plurality of channel video signals provided through an antenna; A VCR unit which adds a plurality of channels and a plurality of decks, records video signals provided from each of the plurality of channels to the plurality of decks, and reproduces and provides a recorded video signal; A keypad for providing operation signals of the PIP switch and the double PIP switch according to a user's control command; A microcomputer providing a screen division control signal corresponding to an operation signal of a PIP switch and a double PIP switch provided from the keypad and a video signal provided from the TV unit and the VCR unit; And dividing the screen into a mother screen and a child screen according to the screen division control signal provided by the microcomputer, and displaying an image signal corresponding to the mother screen among the image signals provided by the microcomputer on the mother screen and a video signal corresponding to the mother screen. The double PIP display device including a screen divider to display on the child screen.