KR19990043798A - Subscreen Control Device and Method in PITP TV - Google Patents

Abstract

The present invention relates to a sub picture control apparatus and method in a PIP TV, and a general PIP TV does not include a sub picture control device for sequentially displaying an image of a pre-selected channel on a sub picture. In order to solve the conventional drawback that the process of returning to the video of the previously selected channel is cumbersome if the viewer does not recognize the previously selected broadcast channel after changing the channel because the video cannot be displayed sequentially on the sub-screen, the main screen on the PIP TV And sub-screen control device including sub-screen control means for sequentially displaying sub-screens on the sub-screen for each time set by the viewer when the viewer and sub-screen are simultaneously viewed, and sub-screen control accordingly. By providing a method for the desired broadcast at the time set by the viewer, even if the viewer does not recognize the It can be viewed by selecting the board.

Description

Subscreen Control Device and Method in PITP TV

The present invention relates to a TV of PIP (Picture In Picture) mode having two tuners, and more particularly, to set an image of a broadcasting channel that a viewer selects and inputs when simultaneously watching a main picture and a sub picture on a PIP TV. The present invention relates to a sub-screen control apparatus and a method thereof in a PIP TV for sequentially displaying the sub-screens every hour.

In general, a TV having a two-tuner PIP mode receives a first tuner 100 for receiving and tuning a broadcast signal transmitted from a broadcasting station as shown in the block diagram of FIG. The second tuner 120 to be tuned, the key input unit 220 to input data for operating the PIP TV, and the broadcast signal received by the first tuner 100 and the second tuner 120 to the set program. The microcomputer 200 to process the data, the memory unit 240 storing the data processed by the microcomputer 200 and the data to be processed, and the broadcast signal received by the first tuner 100. The image processor 300 processes the video signal according to the control signal of the control unit 200 and outputs the composite video board casting signal (CVBS) and the color (R, G, B) signals, and the control of the microcomputer 200. The composite image signal CVBS input by the signal and the second tuner 120 are received. PIP processing unit 360 to process the broadcast signal in the PIP mode and input to the image processor 300, a voice processor 500 for processing the main / sub-audio signal from the broadcast signal controlled by the microcomputer 200, The voice processor 500 includes a voice amplifier 520 for amplifying the voice signal processed by the voice processor 500 to a predetermined level and outputting the voice signal through the speakers 600 and 620.

In the PIP mode TV having the above configuration, when the viewer "turns on" the main power, the TV receives the broadcast signal transmitted from the broadcasting station through the first tuner 100, and transmits the broadcast signal through the second tuner 120. The broadcast signal of the PIP mode is received. The broadcast signal received by the first tuner 100 is input to the image processor 300 and the microcomputer 200.

The microcomputer 200 processes contrast, bright, and color (R, G, B) signals, which are the maximum contrast ratios of the screen with respect to the broadcast signal received through the first tuner 100, by a set program. Input to the image processor 300.

Accordingly, the image processor 300 processes the broadcast signal processed by the microcomputer 200 to output vivid color (R, G, B) signals to the CRT 400 and inputs the composite video signal CVBS to the PIP processing unit. Enter at 360. The PIP processing unit 360 processes the video signal of the broadcast signal from the composite video signal CVBS and the second tuner 120 in the PIP mode according to the control signal of the microcomputer 200, and the required color (R, G, B) data is input to the image processor 300. Thus, the image processor 300 processes the color (R, G, B) signal of the broadcast signal input from the first tuner 100 and the signal from the PIP processing unit 360 according to the control signal of the microcomputer 200 to generate a CRT ( 400) output to the screen so that viewers can watch the video on the main / sub-screen.

In addition, the microcomputer 200 inputs a main voice control signal to the voice processor 500 for outputting audio through the speaker 600 and 620 to help understand the image being watched on the main screen. The voice processor 500 processes a voice signal from a broadcast signal input from the first tuner 100, amplifies the voice signal to a predetermined level via the voice amplifier 520, and outputs the result to the speakers 600 and 620 to output the viewer. To listen to the main voice while watching the video of the main / sub-screen displayed on the CRT (400) screen.

However, in the conventional PIP TV, when the viewer designates a new channel of the sub-screen when the main screen and the sub-screen are simultaneously viewed, the sub-screen is changed to the newly designated channel and the predetermined channel is released to recognize the channel designated by the viewer. If not, the defect that the process of returning to the desired channel eventually becomes cumbersome.

The present invention has been made in order to solve the above-mentioned problems, and for that purpose, when watching the main screen and the sub-screen at the same time on the PIP TV, the viewer returns to the broadcasting channel that was previously set and watched by the desired time. Displayed sequentially on the sub-screen to allow the viewer to select and watch the desired broadcast channel at the time set.

In order to realize the present invention having the above objects, a sub-screen control means for sequentially displaying the video signal of a pre-selected broadcast channel set by the viewer on a sub-screen at a desired time when simultaneously viewing the main screen and the sub-screen on a PIP TV. Is a sub-screen control device that includes a PIP in the existing PIP TV, a process of determining whether to sequentially display the selected broadcast channel switching time on the sub-screen while watching TV on the main / sub-screen, and a “key” input. If the selected broadcast channel switching time is to be displayed on the sub screen, storing data sequentially displaying the selected broadcast channel switching time on the sub screen, and reading the stored data sequentially displaying the selected broadcast channel switching time on the sub screen. And if the channel switching time is displayed sequentially on the sub-screen, determining whether to change the selected broadcasting channel switching time. If there is a "key" input to change the previously selected broadcast channel switching time, the viewer displays the sequence of changing the display time of the previously selected broadcast channel and displaying the changed broadcast channel switching time on the sub-screen. It is a main feature to provide a method.

1 is a schematic block diagram showing a television receiver in a typical picture in picture (PIP) mode.

Fig. 2 is a block diagram showing the number of televisions in the PIP mode including the sub-screen control apparatus according to the present invention.

3 is a flow chart showing the above operation relationship of the number of televisions in the PIP mode including the sub-screen control device according to the present invention.

Explanation of symbols on the main parts of the drawings

100: first tuner 120: second tuner

200: microcomputer 220: key input unit

240: memory 260: timer

300: image processor 320: image amplifier

340: vertical / horizontal synchronization processor 360: PIP (Picture In Picture) processing unit

400: CRT (Cathode-ray Tube) 500: Voice Processor

520: voice amplifier 600,620: speaker

700: sub-screen control device 710: command reception and control unit

720: set time storage unit 730: time deviation storage unit

740: time change unit 750: output unit

Hereinafter, a configuration according to an embodiment of the present invention will be described in detail with reference to FIG. 2. The first tuner 100 for receiving and tuning a broadcast signal transmitted from a broadcasting station and receiving and tuning a broadcast signal in a PIP mode A second tuner 120 for inputting data, a key input unit 220 for inputting data for operating a PIP TV, and a broadcast signal received by the first tuner 100 and the second tuner 120 by a set program. The microcomputer 200 for processing, the memory unit 240 for storing the data processed by the microcomputer 200 and the data to be processed, and the microcomputer 200 receiving the broadcast signal received by the first tuner 100. The image processor 300 processes the video signal using the control signal and outputs the composite video signal CVBS and the color R, G, and B signals, and the composite video input by the control signal of the microcomputer 200. The broadcast signal of the PIP mode received by the signal CVBS and the second tuner 120 PIP processing unit 360 to process and input to the image processor 300, a voice processor 500 for processing the main / sub-audio signal from the broadcast signal controlled by the microcomputer 200, and the voice processor 500 In a PIP mode TV having a voice amplifying unit 520 for amplifying a processed voice signal to a predetermined level and outputting the same through a speaker 600 or 620, the viewer may simultaneously watch a main screen and a sub-screen on a PIP TV. And a sub-screen control device 700 which sequentially displays the video signal of the pre-selected broadcast channel set by the desired time on the sub-screen.

The sub-screen control apparatus 700 receives a command set by the viewer by operating the key input unit 220 and receives the command through the control unit 710 and stores a preset broadcast channel switching time. The storage unit 720, a time deviation storage unit 730 for sequentially storing the predetermined broadcast channel switching time set by the viewer in the set time storage unit 720, and the viewer inputting the key. A time change unit 740 for receiving a signal for changing the data set in the microcomputer 200 through the command through the command reception and control unit 710, changing the time display time, and inputting the time to the PIP processing unit 360; And an output unit 750 for reading data stored in the setting time storage unit 720 and inputting the data to the PIP processing unit 360.

The means for selecting and storing all the data allows the channel change and the time change by the key input unit 220.

3 is a flowchart showing an operation relationship of a PIP mode television receiver including a sub-screen sub-screen control apparatus according to the present invention, which confirms whether or not the TV is "on" (S301), and when the TV is "on", (S302), and determining whether to sequentially display the selected broadcast channel on the sub-screen while watching TV on the main / sub-screen (S302), and the determined result "key "If there is no input and the selected broadcast channel switching time is not to be displayed on the sub screen, it returns to step S302. If there is a" key "input, the preset broadcasting channel switching time is to be displayed on the sub screen, Storing the data for sequentially displaying the broadcast channel (S304), sequentially displaying the selected broadcast channel on the sub-screen by reading the stored data (S305), and determining whether to change the previously selected broadcast channel. (S306), and if it is determined that there is no "key" input and does not change the previously selected broadcast channel, the process returns to step S305. Changing the display time (S307), displaying the changed previously selected broadcast channel on the sub-screen (S308), and determining whether to sequentially display the previously selected broadcast channel on the sub-screen (S309). ), And if it is determined that there is no "key" input and the display of the previously selected broadcast channel switching time sequentially on the sub-screen is not finished, the process returns to step S305. If it is to end the display on the sub-screen sequentially, it is shown that the step of ending the display of the pre-selected broadcast channel sequentially displayed on the sub-screen (S310).

Referring to the operation relationship according to an embodiment of the present invention with reference to the accompanying drawings, the viewer operates the power "key" of the key input unit 220 in order to watch the TV in the PIP mode to power the TV power (main power supply) "On" (S301) receives a broadcast signal transmitted from the broadcast station through the first tuner 100, and receives a broadcast signal of the PIP mode transmitted from the broadcast station through the second tuner 120. That is, when the broadcast signal received by the first tuner 100 is input to the image processor 300 and the microcomputer 200, the microcomputer 200 has a maximum contrast ratio of the screen for the broadcast signal received through the first tuner 100. The in-contrast, bright and color signals are processed by the set program and input to the image processor 300. Therefore, when the image processor 300 processes the broadcast signal processed by the microcomputer 200 and outputs a clear color signal to the CRT 400 and inputs the composite video signal CVBS to the PIP processor 360, The PIP processing unit 360 processes the video signal of the broadcast signal from the composite video signal CVBS and the second tuner 120 in the PIP mode according to the control signal of the microcomputer 200, and the required color (R, G, B) data is input to the image processor 300.

Thus, the image processor 300 processes the color signal of the broadcast signal input from the first tuner 100 and the signal from the PIP processing unit 360 according to the control signal of the microcomputer 200 and outputs the signal to the screen of the CRT 400 to the viewer. Allows users to watch videos on the main / sub picture.

In addition, the microcomputer 200 inputs a main voice control signal for outputting the voice to the voice processor 500 to assist in understanding the image being watched on the main screen through the speaker 600 and 620, and thus the first tuner 100. ) Processing the audio signal from the broadcast signal input from the amplification to a predetermined level via the voice amplifier 520, and outputs to the speaker 600, 620, the main / sub-screen that the viewer is displayed on the CRT (400) screen While watching the video of the main voice (S302) to be able to listen.

While watching TV on the main / sub-screen, the microcomputer 200 determines whether to display the pre-selected broadcast channel on the sub-screen (S303) and displays the broadcast channel selected by the key input unit 220 on the sub-screen. If there is no key "input, the user can continue to watch the main / sub picture displayed on the CRT 400 screen.

On the other hand, while watching TV on the main / sub-screen, the microcomputer 200 determines whether to display the pre-selected broadcast channel on the sub-screen (S303) and displays the broadcast channel selected by the key input unit 220 on the sub-screen. If there is a "key" input, data for sequentially displaying the broadcast channel switching time previously selected in the setting time storage unit 720 through the command reception and control unit 710 of the sub-screen control device 700 (eg, Football, baseball, basketball, volleyball, etc. of the sports channel) are stored (S304). At this time, the time deviation storage unit 730 sequentially stores the predetermined broadcast channel switching time set by the viewer in the setting time storage unit 720 with a predetermined deviation. Therefore, the output unit 750 receives the control signal from the microcomputer 200 through the command receiving control unit 710 and reads the pre-selected broadcast channel switching time data stored in the setting time storage unit 720 to the PIP processing unit 360. Enter it. Thus, the PIP processing unit 360 performs PIP processing on the pre-selected broadcast channel switching time data to sequentially convert the preselected broadcast channel switching time on the CRT 400 sub-screen through the image processor 300 and the image amplifier 320. Display (S305). When the preselected broadcast channel switching time input by the viewer is sequentially displayed on the sub-screen, the microcomputer 200 determines whether to change the preselected broadcast channel switching time (S306).

As a result of the determination, if there is no separate “key” input for changing the broadcast channel switching time selected by the key input unit 220, the PIP processing unit 360 performs a PIP process on the pre-selected broadcast channel switching time data and performs an image processor ( 300 and the image amplifying unit 320 to perform the process of sequentially displaying on the sub-screen of the CRT 400, and the "key" input for changing the broadcast channel switching time selected by the key input unit 220 is If there is, the time changing unit 740 changes the channel switching time to the time input by the viewer by the control signal of the microcomputer 200 inputted through the command reception and the control unit 710 (S307) to the PIP processing unit 360. Enter it.

Accordingly, the PIP processing unit 360 performs a PIP process on the pre-selected broadcast channel switching time data that is changed and input by the time changing unit 740 to the CRT 400 sub-screen through the image processor 300 and the image amplifying unit 320. Displayed sequentially (S308). If the changed channel switching time is sequentially displayed on the CRT 400 sub-screen, the microcomputer 200 determines whether to finish sequentially displaying the pre-selected broadcast channel switching time on the sub-screen (S309).

As a result of the determination, if there is no separate “key” input for terminating sequentially displaying the broadcasting channel switching time selected by the key input unit 220 on the sub-screen, the PIP processing unit 360 inputs the previously selected broadcasting channel switching time. PIP processing of the data to sequentially perform the process of sequentially displaying the CRT 400 sub-screen through the image processor 300 and the image amplifying unit 320, and then selects a broadcast channel switching time selected by the key input unit 220. If there is a "key" input for ending the display sequentially on the sub-screen, the CRT 400 ends the display of the previously selected broadcast channel switching time displayed sequentially on the sub-screen (S310).

The sub-screen control apparatus and method thereof in the PIP TV according to an embodiment of the present invention have been described above, but the present invention is not limited thereto, and various modifications may be made to those skilled in the art.

As described above, in the present invention, when a main screen and a sub-screen are simultaneously viewed on a PIP TV, the broadcast channel desired by the viewer at a time set by the viewer is displayed by sequentially displaying the images of the existing broadcast channel set and input by the viewer on the sub-screen for each desired time. Select to have an effect that you can watch.

Claims (3)

The first tuner 100, the second tuner 120 for receiving a broadcast signal, the microcomputer 200 for processing the broadcast signal received at the first tuner 100, the second tuner 120, and the first tuner. The video signal received by the processor 100 to the image processor 300 to process the video signal by the control signal of the microcomputer 200, the signal input by the control signal of the microcomputer 200 and the second tuner 120 A PIP processing unit 360 for processing the received PIP mode broadcast signal and inputting it to the image processor 300, a voice processor 500 for processing the main / sub audio signal from the broadcast signal controlled by the microcomputer 200, In the PIP TV having a voice amplifier 520 for amplifying the processed voice signal to a predetermined level and output through the speaker 600, 620, And a sub-screen control device 700 for sequentially displaying the video signal of a pre-selected broadcast channel set by the viewer on a sub-screen at a desired time when simultaneously watching the main screen and the sub-screen on a PIP TV. Sub picture control on PIP TV. The apparatus of claim 1, wherein the sub-screen control apparatus 700 receives the command set by the viewer through the key input unit 220 and receives the command through the control unit 710. A set time storage unit 720 for storing time; A time deviation storage unit 730 for sequentially storing the predetermined broadcast channel switching time set by the viewer in the setting time storage unit 720 with a predetermined deviation; A time for the viewer to input a signal for changing the data set in the microcomputer 200 by operating the key input unit 220 through the command reception and control unit 710 and to change the time display time to input the PIP processing unit 360. A changer 740; And an output unit (750) for reading the data stored in the setting time storage unit (720) and inputting the data to the PIP processing unit (360). A method of displaying sub-screen time in a PIP TV, comprising: determining whether to sequentially display a broadcast channel switching time selected on a sub-screen while watching TV on a main / sub-screen; If there is a "key" input to display the previously selected broadcast channel switching time on the subscreen, the data that sequentially displays the previously selected broadcast channel switching time is stored on the subscreen, and the selected broadcast channel switching time is read out to read the stored data. Displaying sequentially on the screen; Determining whether to change the selected broadcast channel switching time if the channel switching time is sequentially displayed on the sub-screen; Changing the display time of the broadcast channel selected by the viewer when the key is input to change the previously selected broadcast channel switching time; The sub-screen control method of the PIP TV in the process of displaying the changed previously selected broadcast channel switching time on the sub-screen.