KR19980048121A - Sub picture display method by sound comparison in TV with PIP function - Google Patents

Abstract

The present invention relates to a method of displaying a specific broadcast on a sub-screen in a television having a PIP function, and more particularly, to store a title song of a specific broadcast set by a viewer in a memory device and to use a sub-tuner to display the current broadcast program. Compares the title song recorded in the memory device with a specific broadcast program that is set and outputs the sub-screen so that viewers can check the output of the specific broadcast without changing the channel. The sub-screen display method according to the present invention.

The sub-screen display method by sound comparison in a television having a PIP function of the present invention is a first step of storing a title song of a specific broadcast in the memory device 23 for outputting to a sub-screen when there is a key input by a viewer. ; A second step of detecting the title song of the broadcast output from the second tuner 13 in the microcomputer 11; A third step of comparing the title song recorded in the memory device 23 with the title song of the current broadcast program in the microcomputer 11; And a fourth step of outputting the broadcast of the second tuner 13 as a sub-screen if the stored title song and the title song of the broadcast program are the same.

Description

Sub picture display method by sound comparison in TV with PIP function

The present invention relates to a method of displaying a specific broadcast on a sub-screen in a television having a PIP function, and more particularly, to store a title song of a specific broadcast set by a viewer in a memory device and to use a sub tuner to display a current broadcast program. Compares the title song recorded in the memory device with a specific broadcast program that is set and outputs the sub-screen so that viewers can check the output of the specific broadcast without changing the channel. The sub-screen display method according to the present invention.

In recent years, in the field of television technology, various improvements have been made to satisfy the increasing needs of viewers, and high quality and high functionality has been achieved. One of these is picture-in-picture (PIP) television, which can display two screens simultaneously on a television screen.

The PIP television includes a pair of tuners for watching one broadcast while watching another broadcast, and includes a PIP module for processing to include other signals inputted through the tuner in the main screen. The PIP module is connected to the image processor.

However, in the conventional TV having a PIP function, in order to watch a screen of another channel as a sub-screen, it is inconvenient to directly input a specific channel that a viewer wants to watch using the remote controller 20 or the like. In addition, because the broadcast time is not desired to watch on other broadcasting channels, the current broadcast channel is fixed, and the channel forgets to change and there is a problem that the user cannot watch the broadcast.

The present invention has been made to solve the above problems, and an object of the present invention is to display the video screen of a specific broadcast channel set by the viewer to detect the title song of the broadcast and output it as a sub-screen so that the viewer does not change the channel. The present invention provides a sub-screen display method by comparing sound in a television having a PIP function capable of confirming broadcast contents of a designated channel without using the same.

Another channel display method in a television with a PIP function of the present invention for achieving the above object, the microcomputer 11 for controlling the entire device to perform a command from the remote control 20, and the RF signal received through the antenna Tuner signals output from the first and second tuners 12 and 13 and the first and second tuners 12 and 13 respectively receiving the signals for the main picture and the signals for the sub picture, respectively. The first and second IF amplifiers 14 and 15 for amplifying IF, and the IF signal output from the first IF amplifier 14 and the second IF amplifier 15 are separated from the video signal and the audio signal Processing the first P / S separator 16 and the second P / S separator 17 and the video signal output from the first P / S separator 16 and the second P / S separator 17 To this end, the image processing unit 18 including a PIP module, and the image signal output from the image processing unit 18 A television comprising a CRT drive unit (19) for displaying on a CRT, the television comprising: a first step of storing a title song of a specific broadcast in a memory device (23) for outputting on a sub-screen when there is a key input by a viewer; A second step of detecting the title song of the broadcast output from the second tuner 13 in the microcomputer 11; A third step of comparing the title song recorded in the memory device 23 with the title song of the current broadcast program in the microcomputer 11; And a fourth step of processing the broadcast of the second tuner 13 by the image processor 18 and outputting the subtitle when the stored title song is the same as the title song of the broadcast program.

1 is a partial block circuit diagram of a television having a PIP function conventionally used;

2 is a front view of a television displaying a sub-screen according to the present invention;

3 is a flowchart for explaining a sub-screen display method by sound comparison in a television having a PIP function according to the present invention.

* Description of the symbols for the main parts of the drawings *

11: micom, 12: first tuner,

13: second tuner, 14: first IF amplifier,

15: second IF amplifying unit, 16: first P / S separator,

17: second P / S separator, 18: image processing unit,

19: CRT drive unit, 20: remote control,

21: voice processing unit, 22: amplifier,

23: memory device, 24: TV,

25: main screen, 26: subscreen,

27: Adjustment switch.

Hereinafter, the sub-screen display method by sound comparison in a television having a PIP function according to the present invention will be described in detail with reference to the accompanying drawings.

First, with reference to Figure 1 will be briefly described the operating state of the conventional PIP function television. As shown in the drawing, the conventional PIP TV includes a remote controller 20 for inputting a command for performing a function, a microcomputer 11 for controlling an entire device to perform a command from the remote controller 20, and an antenna. A first tuner 12 and a second tuner 13 which receive signals for the main picture and signals for the sub picture from the received RF signals, respectively, and are output from the first and second tuners 12 and 13, respectively. In the IF signal output from the first IF amplifier 14 and the second IF amplifier 15, and the IF signal 14 and the second IF amplifier 15 for IF amplifying the tune signal, respectively, A first P / S separator 16 and a second P / S separator 17 for separating audio signals, and output from the first P / S separator 16 and the second P / S separator 17 An image processor for processing an image signal, comprising an image processor 18 including a PIP module and an image scene output from the image processor 18. The CRT includes a drive unit 19 for displaying on a CRT.

Each of the video signals output from the first P / S separator 16 and the second P / S separator 17, that is, the main screen and the sub-screen video signals, are respectively transferred to the image processor 18 and the PIP module 19. Is entered. The input main screen image signal is processed by the image processor 18 and output to be displayed on the entire screen of the CRT, and the sub-screen image signal is processed by the PIP module 19 to mix the image signals to occupy a part of the main screen. And output.

In addition, the audio signals output from the first and second P / S separation units 16 and 17 are input to the voice processing unit 21 so as to be loud enough to ring the speaker through the amplifier 22 after the treble, bath, volume, etc. are adjusted. Is amplified by the signal.

In general, when watching TV, only the first tuner 12 is controlled by the microcomputer 11 to generate only the IF signal of the main screen, which is amplified by the first P / S separator 16 and then the image and the like. Separated into voice signals. The separated image signal is input to the image processor 18, and the image processor 18 processes the image signal and outputs R, G, and B signals corresponding thereto, and the CRT driver 19 uses the CRT based on the signal. Print the screen on the screen. On the other hand, the separated voice signal is amplified by the main audio amplifier and then output through the speaker. Although not shown, the PIP module can handle multiple multiple screens internally and typically uses SAB9076H, a Philips PIP IC chip.

The method of the present invention, which is executed in a television having a conventional PIP function as described above, comprises the following steps: storing a title song of a specific broadcast in a memory device 23 for outputting to a sub picture when a viewer presses a key; Stage 1; A second step of detecting the title song of the broadcast output from the second tuner 13 in the microcomputer 11; A third step of comparing the title song stored in the memory device 23 with the title song of the current broadcast program in the microcomputer 11; And a fourth step of processing and outputting the broadcast of the second tuner 13 as a sub-screen by the image processing unit 18 when the stored title song and the title song of the broadcast program are the same.

The method of the present invention is described with reference to the flowchart of FIG. 3.

The method of the present invention begins by first storing title songs of a specific broadcast channel that the viewer wants to confirm by the viewer. The setting of the specific broadcast channel and the storage of the title song can be input using the remote controller 20. The specific channel data set by the viewer is stored in the memory device 23 connected to the microcomputer 11.

The memory device 23 stores the SIF signal output from the P / S separator according to the control signal from the microcomputer 11. The SIF signal stored in the memory device 23 is a signal corresponding to a title song of a specific broadcast, and is stored by the viewer recording to the memory device 23 when the title song of a specific broadcast is output through the speaker. The title song can store all or the first one or two measures, which can be set by the viewer by pressing the title storage function key.

The title song thus stored is used as a material for judging the input of a specific broadcast signal. Of course, it will be apparent to those skilled in the art that the recording of the title song is stored as a signal other than the SIF signal and the broadcast can be judged based on the stored signal.

In the state in which the title song of the specific broadcast is stored as the SIF signal as described above, the microcomputer 11 waits for the input of the specific broadcast screen output command by the viewer.

When a specific broadcast unit output command is input by the viewer, the microcomputer 11 detects the SIF signal output from the second P / S separation unit 17 as a broadcast signal tuned through the second tuner 13 and simultaneously performs a memory device ( The SIF of the reserved recording title song stored in 23) is compared with the SIF signal of the currently input broadcast. The comparison process reads and compares a signal input from the second P / S separator 17 with a signal from the memory device 23 using a comparator in the microcomputer 11.

As a result of the comparison, if the recorded SIF signal and the currently input broadcast SIF signal are found to be the same, the microcomputer 11 synthesizes the broadcast from the second tuner 13 with the main screen in the image processor 18. The image processing unit 18 includes a PIP module for processing such image synthesis. If the same signal is not detected, the microcomputer 11 outputs a control signal so that the second tuner 13 sequentially searches for a broadcast channel.

The output subscreen 3 is output as a small screen on the upper edge of the main screen 2 as shown in FIG. In this way, the viewer can check whether the broadcast set by the current viewer is output from the sub-screen 3.

As described above, according to the present invention, the viewer can check the broadcasting contents of the designated channel without changing the channel by detecting the title song of the broadcasting and outputting the video screen of the specific broadcasting channel set by the viewer as a sub-screen. It is.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (3)

A microcomputer 11 for controlling the entire apparatus to perform a command from the remote controller 20, and a first tuner 12 for receiving a signal for the main screen and a signal for the sub-screen from the RF signal received through the antenna, respectively. And a first IF amplifier 14 and a second IF amplifier 15 for IF amplifying the second tuner 13 and the tuning signals output from the first and second tuners 12 and 13, respectively; A first P / S separator 16 and a second P / S separator 17 for separating the video signal and the audio signal from the IF signals output from the first IF amplifier 14 and the second IF amplifier 15; And an image processor 18 for processing an image signal output from the first P / S separator 16 and the second P / S separator 17 and including a PIP module, and the image processor 18. In a television comprising a CRT driver 19 for displaying a video signal output from a CRT, A first step of storing a title song of a specific broadcast in a memory device 23 for outputting to a sub-screen when there is a key input by a viewer; A second step of detecting the title song of the broadcast output from the second tuner 13 in the microcomputer 11; A third step of comparing the title song stored in the memory device 23 with the title song of the current broadcast program in the microcomputer 11 when a signal input is detected; And And a fourth step of processing the broadcast of the second tuner 13 in the image processing unit 18 and outputting the subtitle when the stored title song is identical to the title song of the broadcast program. Sub-screen display method by sound comparison on television. 2. The sub picture display method according to sound comparison in a television having a PIP function according to claim 1, wherein the title song of a specific broadcast is stored in the memory device (23) as an SIF signal in the first step. The method of claim 1, wherein in the second step, the second tuner 13 searches for a title of a specific broadcast while sequentially changing channels. .