KR100307594B1 - Apparatus and method for controlling output of picture according to program grade in picture in picture mode - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling a screen output of a television, and more particularly, to a program class in a picture-in-picture mode that simultaneously controls output of a main / sub picture in a picture-in-picture mode according to a reception class of a program transmitted from a broadcasting station. The present invention relates to a screen output control apparatus and method.

According to the present invention, in the case of setting a broadcast program grade that can be received in the PIP mode, the program grade of the main screen is compared to not only limit the output of the main screen when the program grade is higher than the set program grade, but also determine the program grade of the sub-screen of the PIP. By limiting the sub-screen output, the PIP mode can simultaneously control the output of the main screen / sub-screen according to the class of the received program.

Description

Apparatus and method for controlling output of picture according to program grade in picture in picture mode}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling a screen output of a television, and more particularly, to a program class in a picture-in-picture mode that simultaneously controls output of a main / sub picture in a picture-in-picture mode according to a reception class of a program transmitted from a broadcasting station. The present invention relates to a screen output control apparatus and method.

Conventionally, when a broadcasting station transmits a video and audio signal related to a broadcast program from a broadcasting station, it is received by a television, demodulates the video and audio signals, and outputs a video signal to a monitor and a sound signal to a speaker.

However, with the diversification of the functions of television, broadcasting and video signals are loaded with additional information on the basis of transmitting and receiving video and audio signals. For example, in order to facilitate reservation recording, a broadcasting station inserts and transmits information related to a television program into a specific portion of a video signal in which a video signal is not output, and extracts and reserves program information added to the video signal at a receiving end. Not only can the schedule recording be easily used when setting the recording, but also the program can be easily found and watched while checking the broadcasting order of each broadcasting station.

As the functions of television become more diversified, broadcasting stations divide broadcasting programs according to their contents in addition to broadcasting program information, and divide them into programs that can only be viewed by adults or programs that can be watched by family members. Up to the step of carrying the program information together and transmitting it has been reached.

In addition, with the diversification of television functions, it is possible to simultaneously watch two broadcast programs of main and sub screens on a single screen by using a picture in picture (PIP) mode using two tuners.

However, the screen output control method according to the broadcast program class received according to the prior art determines and controls only the grade of the broadcast program of the main screen in the PIP mode, and the broadcast program output to the sub-screen regardless of the program grade. There is a problem that the output control according to the program level is not practical in the PIP mode by always outputting.

The technical problem to be solved by the present invention is to compare the viewable program ratings set by the user with respect to the broadcast program output as the sub screen as well as the broadcast program output as the main screen in the PIP mode in order to solve the above problems. The present invention provides an apparatus and method for controlling a screen output according to a program grade in a picture-in-picture mode for simultaneously controlling whether a main / sub picture is output.

1 is a flowchart illustrating a method of controlling a screen output according to a program level in a picture in picture mode according to the present invention.

2 is a block diagram of a screen output control apparatus according to a program level in a picture-in-picture mode according to the present invention.

In order to achieve the above technical problem, the screen output control apparatus according to the program class in the picture-in-picture mode according to the present invention may be configured according to the received program class in the picture-in-picture mode using two tuner blocks (main / sub-tuner block). In the screen output control apparatus, the main screen video signal output from the main tuner block and the sub-screen video signal output from the sub-tuner block are input, and the main / sub picture video signal is switched according to the PIP switching control signal. After inputting the main / sub-screen video signal switching output from the switching unit to extract, decode and store the program grade data in the buffer, the program receiving grade (Go) and the buffer set initially The program can be received by comparing the main / minor program grade (Gm / Gs) stored in When Go is lower than the main / sub program class (Gm / Gs), the PIP switching control signal and the multiplexer control corresponding to the main / sub picture blocking control signal and the setting mode to block the output of the corresponding screen in the PIP mode. A control unit for generating a signal and a main screen video signal output from the switching unit are input, and the color signal and the luminance signal are separated and subjected to signal processing. After inputting the sub-screen video signal output from the screen signal processing unit and the switching unit, and separating the color signal and the luminance signal and vertically and horizontally compressing the signal, blocking the output when the sub-screen blocking control signal is input. Inputting an output signal of the PIP signal processor and the main picture signal processor and the PIP signal processor; Therefore, the signal is characterized in that it comprises a multiplexer for selecting and outputting one of the input signal.

In accordance with another aspect of the present invention, there is provided a method of controlling a screen output according to a program grade in a picture-in-picture mode, in the screen output control method using program grade data added to a broadcast signal. A step for setting a program-receivable class Go, which is a class boundary. (b) determining whether the execution mode is a picture-in-picture mode (PIP mode); (c) when the determination result of the step (b) is the PIP mode, in the video signals received through the main picture channel and the sub picture channel. Extracting and decoding the main / sub program grade data, respectively; (d) comparing the program receivable grade (Go) and the grade (Gm / Gs) of the decoded main / sub program grade data, respectively; (e) As a result of the comparison in step (d), if the program reception grade Go is lower than the extracted main program grade Gm, the output of the main screen of the PIP is cut off, and the program reception grade is possible. And if Go is lower than the extracted sub-program grade Gs, blocking the output of the sub-screen of the PIP.

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

As shown in FIG. 1, a screen output control apparatus according to a reception class according to the present invention includes an antenna 201, a main tuner 202, a main IF module 203, a sub tuner 204, and a sub IF module 205. ), A switching unit 206, a control unit 207, an input unit 208, a main picture signal processing unit 209, a PIP signal processing unit 210, a multiplexer 211, and a cathode ray tube (CRT) 212.

Here, the main tuner 202 and the main IF module 203 will be referred to as a main tuner block, and the sub tuner 204 and the sub IF module 205 will be referred to as a sub tuner block.

According to the PIP mode, two tuners are required to display two different broadcast programs on a screen divided into a main screen and a sub screen.

Accordingly, the main tuner 202 tunes and outputs the broadcast signal of the channel selected as the main screen in the PIP mode, and tunes and outputs the broadcast signal of the channel selected by the user in the normal mode.

The main IF module 203 outputs a main picture video signal component obtained by intermediate frequency detection of the broadcast signal input from the main tuner 202 through a tuning circuit.

Sub-tuner 204 tunes and outputs the broadcast signal of the channel selected as the sub picture in the PIP mode.

The sub IF module 205 outputs a sub picture video signal component obtained by intermediate frequency detection of the broadcast signal input from the sub tuner 204 through a tuning circuit.

The switching unit 206 inputs a main / sub picture video signal output from the main IF module 203 and the sub IF module 205 and performs a main picture video signal among the input signals according to the PIP switching control signal of the control unit 207. Is output to the main screen signal processor 209, and the sub-screen video signal is output to the sub-screen signal processor 210. Then, the input main / sub picture video signals are alternately switched and applied to one input terminal of the controller 207.

The main screen signal processing unit 209 separates the main screen input video signal into a color signal and a luminance signal and performs demodulation respectively, and then blocks the output when the main screen blocking control signal is applied from the control unit 207. Otherwise, the output is normal.

The PIP signal processing unit 210 separates the sub-screen input video signal into a color signal and a luminance signal, demodulates them respectively, and executes signal processing for compressing the signals in the vertical and horizontal directions. If it is applied, the output is cut off, otherwise it is outputted normally.

The multiplexer 211 outputs one signal from the main screen video signal output from the main screen signal processor 209 and the sub picture video signal output from the PIP signal processor 210 according to the multiplexer control signal applied from the controller 207. It selects and outputs to the CRT 212.

The controller 207 controls the output of the main screen signal processor 209 and the PIP signal processor 210 by using program grade data included in the main / sub picture video signal input from the switching unit 207. The general operation will be described with reference to the flowchart of FIG. 1.

In step 101, one class Go is selected from among program-receivable classes in which the viewable age is classified according to the content of the program transmitted from the broadcasting station. For example, program ratings can be divided into ALL → G → PG → PG-13 → R → NC-17 → X → NR, where ALL is the lowest rating available to viewers of all levels and ages, regardless of rating settings. NR is the highest grade.

Therefore, when the user wants to output only the programs received below the PG-13 level among the program grades through the CRT 212, the user can receive the PG-13 after displaying the program grade setting menu through the input means 208. You can set the rating.

In step 102, the control unit 207 determines whether the user has set the PIP mode.

In step 103, if the PIP mode is not set as a result of the determination in step 102, only program grade (Gi) data transmitted together with the broadcast program signal of the channel selected in the normal mode is extracted.

In step 104, the extracted program class data is decoded and stored in a buffer.

In step 105, the program grade Go initially set by the user is compared with the received program grade G _i of the decoded program grade data.

That is, the program grade Go set in step 101 is compared with the received program grade G _i to determine which grade corresponds to a higher grade.

In step 106, if the set program grade Go is lower than the received program grade G _{i as a} result of the determination in step 105, the output is blocked because the received broadcast program is not a viewable program.

Next, in the PIP mode, the following operation is performed.

In step 107, the control unit 207 controls the switching unit 206 so that the switching unit 206 alternately switches the main / sub picture video signal and outputs it to one input terminal of the control unit 207.

In step 108, program grade (Gm / Gs) data is extracted from the alternately input main / sub picture video signals using the data slicer in the control unit 207, respectively.

In step 109, the main screen program class data and the sub-screen program class data extracted in step 108 are respectively decoded and stored in a specific buffer.

In step 110, the program grade Go set by the user is compared with the program grade Gm of the decoded main screen program grade data.

In step 111, if the program grade Go set initially by the user is lower than the program grade Gm of the decoded main screen program grade data, it corresponds to a program that cannot be received. It is applied to the main screen signal processor 209 to prevent the main screen of the PIP from being output.

In step 112, the program grade Go initially set by the user is compared with the program grade Gs of the decoded sub-screen program grade data.

In step 113, if the program grade Go, which is initially set by the user, is lower than the program grade Gs of the decoded sub-screen program grade data, the sub-screen block control signal is determined. Is applied to the PIP signal processor 210 to prevent the sub-screen of the PIP from being output.

According to the above operation, it is possible to simultaneously control the screen output in accordance with the program level of the main / sub-screen in the PIP mode.

As described above, the present invention compares the program ratings of the main screen when the broadcast program ratings that can be received in the PIP mode are set to not only limit the output of the main screen but also limit the output of the sub-screen of the PIP. By determining the program grade and limiting the sub-screen output, it is possible to simultaneously control the output of the main screen / sub-screen according to the grade of the received program in the PIP mode.

Claims (4)

In the screen output control apparatus according to the received program class in the picture-in-picture mode using two tuner blocks (main / sub-tuner block), A switching unit configured to input a main screen video signal output from the main tuner block and a sub picture video signal output from the sub tuner block, and output a main / sub picture video signal according to a PIP switching control signal; After inputting the main / sub picture video signal switched by the switching unit, the program grade data is extracted, decoded, and stored in the buffer, and then the initially set program receiveable grade Go and the main / sub stored in the buffer are input. Main / sub picture block control to block output of the corresponding screen in PIP mode when the program reception level (Go) is lower than the main / sub program level (Gm / Gs) by comparing a program grade (Gm / Gs) A control unit for generating a PIP switching control signal and a multiplexer control signal corresponding to the signal and the setting mode; A main screen signal processing unit for inputting a main screen video signal output from the switching unit, separating the color signal and the luminance signal, and then processing the signal when the main screen blocking control signal is input; PIP signal processing unit for inputting the sub-screen video signal output from the switching unit, separating the color signal and the luminance signal and processing the compression signal vertically and horizontally, and then blocking the output when the sub-screen blocking control signal is input. ; And And a multiplexer for inputting output signals of the main picture signal processor and the PIP signal processor to select and output one input signal according to the multiplexer control signal. According to the screen output control device. The program of claim 1, wherein the switching unit alternately outputs the main screen video signal and the sub screen video signal through a single output terminal to the control unit. Display control device. In the screen output control method using the program grade data added to the broadcast signal, (a) setting a program receivable class Go that is a boundary of a receivable program class; (b) determining whether the execution mode is a picture-in-picture mode (PIP mode); (c) extracting and decoding the main / sub program class data from the video signals received through the main picture channel and the sub picture channel, respectively, in the PIP mode as a result of the determination of step (b); (d) comparing the program receivable grade (Go) and the grade (Gm / Gs) of the decoded main / sub program grade data, respectively; And (e) As a result of the comparison in step (d), if the program reception grade Go is lower than the extracted main program grade Gm, the output of the main screen of the PIP is cut off, and the program reception grade is possible. If (Go) is lower than the extracted sub-program grade (Gs), the step of blocking output of the sub-screen of the PIP, characterized in that the screen output control method according to the program grade in the picture-in-picture mode . The method of claim 3, wherein step (c) (a ') switching the video signals received through the main picture channel and the sub picture channel of the PIP when the PIP mode is determined as a result of the step (b); (b ') extracting main / minor program grade (Gm / Gs) data from the signal output from the switching in the step (a'); And and (c ') decoding the main / minor program grade (Gm / Gs) data and storing the decoded data in a specified buffer, respectively.