KR0167099B1 - The other channel-searching method by using a bus-screen for watching a channel - Google Patents

Abstract

The present invention relates to a method of searching for another channel using a sub-screen while watching a specific channel. Conventionally, a user manipulates a channel switcher to check a broadcast signal received from another channel while watching a broadcast signal of a specific channel using a TV receiver. There was a hassle to do. In addition, when switching to another channel to check the broadcast signal of the other channel has a drawback that you can not watch the broadcast signal of the channel that has been watching so far while the channel is switched. The present invention determines whether or not a program is terminated by reading a code data input while receiving and processing a broadcast signal of a specific channel tuned to a television receiver as a main screen. As a result, when the program is terminated, the end frequency is counted while counting the end time of the program. If there is no channel switching while the program is over a certain number of times, the PIP function is operated to tune the broadcasting signals of other channels sequentially and output them as sub-screens. While watching the video for a long time, there is an effect that can check the broadcast signal of other channels that do not watch through the sub-screen.

Description

Searching other channels using sub-screen while watching a specific channel

1 is a block diagram according to the present invention.

2 is a flow chart in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: first tuner 12: second tuner

16: intermediate frequency processing unit 18: mode switching unit

20: voice signal processing unit 22: voice output unit

24: first video signal processor 26: second video signal processor

28: main / sub screen designation unit 30: video output unit

32: cathode ray tube 34: OSD signal processing unit

38: code data extractor 38: code data decoder

40: microprocessor 42: key input unit

44: memory section

The present invention relates to a method of searching for another channel using a sub-screen while watching a specific channel. Specifically, when watching a main channel of a television receiver having a PIP function for a long time, the other channel is operated by operating the PIP function of the television receiver. The present invention relates to a method of searching for another channel using a sub-screen while watching a specific channel for searching a sub-screen of a broadcast signal.

When a general television receiver receives a broadcast signal transmitted from a broadcasting station through the first tuner 10 and the second tuner 12 and is applied to the intermediate frequency processor 16, the intermediate frequency processor 16 receives the applied broadcast signal. The process is performed to the audio signal processor 20, the first video signal processor 24 and the second video signal processor 26 via the mode switching unit 18.

At this time, the mode switching unit for selecting the broadcast signal of the two channels input through the intermediate frequency processing unit 16 and applies it to the audio signal processing unit 20, the first video signal processing unit 24 and the second video signal processing unit 26 ( In operation 18), when the operation mode of the television receiver is changed to the PIP operation mode by operating a key of the key input unit 42, the microprocessor 40 can perform the PIP operation function selected by the above key input. Mode switching unit to apply the broadcast signals of the two channels received through the two tuners 10 and 12 to the audio signal processor 20, the first video signal processor 24, and the second video signal processor 26. The operation of 18 is controlled.

That is, the video signal and the audio signal received through the first tuner 10 and the second tuner 12 are transferred to the audio signal processor 20, the first video signal processor 24, and the second video signal processor 26. To approve.

Accordingly, the voice signal processor 20 processes the voice signals corresponding to the broadcast signals of the two channels applied by the intermediate frequency processor 16 and applies them to the voice output unit 22, so that the key input unit (not shown) is used as a speaker or earphone. 42) and the sub-audio (speaks the audio signal corresponding to the sub picture).

In addition, the first image signal processor 24 receives and processes the image signal through the first tuner 10 or the second tuner 12 output from the intermediate frequency processor 16 through the mode switcher 18. Applied to the main / sub picture designation unit 28, and the second image signal processing unit 26 is output from the intermediate frequency processing unit 16 via the mode switching unit 18 or the first tuner ( The video signal through 10 is received and processed and applied to the main / sub picture designation unit 29.

Then, the main / sub picture designation unit 28 controls the video signal output from the first video signal processor 24 or the video signal output from the second video signal processor 26 under the control of the microprocessor 40. Since it is selected as a screen or a sub-screen and applied to the video output unit 30, the cathode ray tube 32 outputs the video signals of two channels through the video output unit 30 to the main screen and the sub-screen.

Therefore, when receiving and watching a broadcast signal transmitted from a broadcasting station by using a television receiver equipped with two tuners 10 and 12, the main screen and the sub picture displayed on the cathode ray tube 32 are displayed. Since the screen can be viewed at the same time, the broadcast signal (program) of various channels can be checked by sequentially displaying different channels as the main screen while viewing the broadcast signal of one channel as the main screen.

Then, the code data extractor 36 is included in the video signals output from the first video signal processor 24 and the second video signal processor 26 to transmit the code data (type of broadcast program, current time and broadcast program). Extract the data required by the user, such as the beginning and the end of the data) and apply it to the code data decoder 38, the code data decoder 38 receives the code data and the microprocessor 40 knows the information of the two channels. It can be.

In addition, the microprocessor 40 receives a key input through the key input unit 40, code data through the code data decoder 38, and the like, and outputs a control signal to the OSD signal processor 34 to display the operation of the television receiver. Since the OSD signal processed by the OSD signal processor 34 is applied to the first image signal processor 24, the OSD signal is connected to the main / sub picture designator 28 and the image output unit 30 together with the image. Through the cathode ray tube 32.

Therefore, the viewer can watch the broadcast signal while confirming the operation state of the television receiver according to the operation of the key input unit 42 or the operation state of the other television receiver in operation by the OSD signal displayed on the cathode ray tube 32.

In order to check a broadcast signal received from another channel while watching a broadcast signal of a specific channel using such a TV receiver, a user has to operate a channel switching key.

In addition, when switching to another channel to check the broadcast signal of the other channel has a drawback that you can not watch the broadcast signal of the channel that has been watching so far while the channel is switched.

The present invention has been made to solve the above-mentioned drawbacks, and when the main screen of a television receiver having a PIP function is watched for a certain channel for a long time, the PIP function of the television receiver is operated to provide broadcast signals of other channels. It is an object of the present invention to provide a method of searching for another channel using a sub picture while watching a specific channel, which enables the user to output a sub screen to search for a broadcasting signal of another channel while watching a specific channel.

The present invention for realizing the above object is to process the broadcast signal of the two channels received through the two tuners to the main screen and the sub-screen to display on the cathode ray tube, the broadcast signal of the tuned channel to the main screen Determining whether the program is terminated by reading the code data input while receiving processing; and determining whether the termination number is more than a certain number while counting the number of program termination times when the program is finished; If there is no channel switching during the termination, it is configured to perform the step of outputting the sub-screen by sequentially tuning the broadcast signal of the other channel by operating the PIP function.

Hereinafter, the configuration according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 1, the first and second tuners which tune and receive a multi-channel broadcast signal transmitted from a broadcasting station under the control of the microprocessor 40 that recognizes a key input of the key input unit 42 ( 10) 12, an intermediate frequency processor 16 which receives the broadcast signals output from the first and second tuners 10 and 12, and performs intermediate frequency processing, and a switching operation when the PIP function is selected. 10) and mode switching unit 18 for selecting the broadcast signals of the two channels output from the second tuner 12 and applying them to the audio signal processor 20 and the first and second video signal processors 24 and 26. And a voice signal processing unit 20 for processing a voice signal through the mode switching unit 18, and a voice output unit 22 for outputting voice signals output from the voice signal processing unit 20 with main and sub voices. And a first zero for selecting and processing broadcast signals of respective channels output to the first tuner 10 or the second tuner 12. A signal processor 24, a second video signal processor 26 for selecting and processing broadcast signals of respective channels output from the first tuner 10 or the second tuner 12, and the first and second video signals. A main / sub picture designation unit 28 which receives an image signal output from the processing unit 24 and 26 and designates it as a main / sub picture and outputs it to the video output unit 30; A video output unit 30 for outputting the video signal of the channel designated by 28 to the cathode ray tube 32 as a main / sub picture, and a video signal processed by the first and second video signal processing units 24 and 26. A code data extractor 36 for extracting code data from the code data, a code data decoder 38 for receiving and decoding code data output from the code data extractor 36, and an operation mode of a television receiver. The key input unit 42, the key input of the key input unit 42, and the code data and tell of the code data decoder 38. A microprocessor 40 for controlling the overall operation of the television receiver by recognizing the operation state of the vision receiver, a memory unit 44 for storing data according to the operation of the microprocessor 40, and the microprocessor 40 An OSD signal processor 34 is configured to process an OSD character for notifying a state according to the operation of the controller and apply the OSD character to the first image signal processor 24.

FIG. 2 is a flow chart of the present invention, in which a broadcast signal of two channels received through two tuners is processed into a main screen and a sub-screen and displayed on a cathode ray tube, while receiving and processing a broadcast signal of a tuned channel as a main screen. The code data input is read to determine whether the program is terminated. As a result, when the program ends, the program counts the number of terminations and determines whether the number of terminations is greater than or equal to a certain number of times. If there is no switching, the PIP function is operated to sequentially tune broadcasting signals of other channels and output them to the sub picture.

The effects of the present invention configured as described above will be described.

According to the present invention, when a broadcast signal transmitted from a broadcasting station is received through the first tuner 10 and the second tuner 12 and applied to the intermediate frequency processor 16, the intermediate frequency processor 16 processes the applied broadcast signal. By the mode switching unit 18 is applied to the audio signal processor 20, the first video signal processor 24 and the second video signal processor 26.

At this time, the mode switching unit for selecting the broadcast signal of the two channels input through the intermediate frequency processing unit 16 and applies it to the audio signal processing unit 20, the first video signal processing unit 24 and the second video signal processing unit 26 ( In operation 18), when the operation mode of the television receiver is switched to the PIP operation mode by operating the key of the key input unit 42, the microprocessor 40 can perform the PIP operation function selected by the above key input. Mode switching unit to apply the broadcast signals of the two channels received through the two tuners 10 and 12 to the audio signal processor 20, the first video signal processor 24, and the second video signal processor 26. The operation of 18 is controlled.

That is, the video signal and the audio signal received through the first tuner 10 and the second tuner 12 are transferred to the audio signal processor 20, the first video signal processor 24, and the second video signal processor 26. To approve.

Accordingly, the voice signal processor 20 processes the voice signals corresponding to the broadcast signals of the two channels applied by the intermediate frequency processor 16 and applies them to the voice output unit 22, so that the key input unit (not shown) is used as a speaker or earphone. 42) and the sub-audio (speaks the audio signal corresponding to the sub picture).

In addition, the first image signal processor 24 receives and processes the image signal through the first tuner 10 or the second tuner 12 output from the intermediate frequency processor 16 through the mode switcher 18. Applied to the main / sub picture designation unit 28, and the second image signal processing unit 26 is output from the intermediate frequency processing unit 16 via the mode switching unit 18 or the first tuner ( The video signal through 10 is received and processed and applied to the main / sub picture designation unit 28.

Then, the main / sub picture designation unit 28 controls the video signal output from the first video signal processor 24 or the video signal output from the second video signal processor 26 under the control of the microprocessor 28. Since it is selected as a screen or a sub-screen and applied to the video output unit 30, the cathode ray tube 32 outputs the video signals of two channels through the video output unit 30 to the main screen and the sub-screen.

Therefore, when receiving and watching a broadcast signal transmitted from a broadcasting station by using a television receiver equipped with two tuners 10 and 12, the main screen and the sub picture displayed on the cathode ray tube 32 are displayed. Since the screen can be viewed at the same time, the broadcast signal (program) of various channels can be checked by sequentially displaying different channels as the main screen while viewing the broadcast signal of one channel as the main screen.

Then, the code data extractor 36 is included in the video signals output from the first video signal processor 24 and the second video signal processor 26 to transmit the code data (type of broadcast program, current time and broadcast). Extracts the data required by the user, such as the beginning and the end of the program) and applies it to the code data decoder 38, the code data decoder 38 receives the code data to be recognized by the microprocessor 40. Since the microprocessor 40 can decode and apply the information to the two channels, the microprocessor 40 can know the information of the two channels.

In addition, the microprocessor 40 receives a key input through the key input unit 40, code data through the code data decoder 38, and the like, and outputs a control signal to the OSD signal processor 34 to display the operation of the television receiver. Since the OSD signal processed by the OSD signal processor 34 is applied to the first image signal processor 24, the OSD signal is connected to the main / sub picture designator 28 and the image output unit 30 together with the image. Through the cathode ray tube 32.

Therefore, the viewer can watch the broadcast signal while confirming the operation state of the television receiver according to the operation of the key input unit 42 or the operation state of the other television receiver in operation by the OSD signal displayed on the cathode ray tube 32.

When the key for channel selection is input through the key input unit 42 of the television receiver, the first tuner 10 operates under the control of the microprocessor 40 to tune the broadcast signal transmitted from the broadcasting station to the intermediate frequency 16. When applied to the intermediate frequency processor 16, the intermediate frequency processor 16 processes it and applies the same to the audio signal processor 20 and the first image signal processor 24 through the mode switcher 18. Accordingly, the user can watch the broadcast signal of the channel tuned to the main audio output through the video output unit 30 to the cathode ray tube 32 as the main screen and the audio output through the audio output unit 22.

At this time, the microprocessor 40 reads the channel switching key through the key input unit 42 or the code data input through the code data extractor 36 and the code data decoder 38 to switch the channel of the broadcast signal being viewed. Or it is determined whether the program of the broadcast signal being watched is terminated.

When the channel is switched, a drive voltage is output to the first tuner 10 to tune the broadcast signal of the switched channel, while the channel is not switched (when the channel is continuously watched. When the broadcast program transmitted by the broadcasting station is finished, the TV program is counted to switch to the PIP operation mode so that a broadcast signal of a channel other than the channel being watched can be searched.

Accordingly, the viewer can not only view the broadcast signal of the channel that has been viewed so far on the main screen but also check the broadcast signal received through other channels on the sub screen.

Looking at the operation of the microphone, the processor 40 to control the operation as described above in the second degree as follows.

The microprocessor 40 of the present invention receives the broadcast signal of the tuned channel and displays the processing main screen, and reads the broadcast signal received by receiving the code data transmitted from the broadcast station.

That is, it is determined whether the program of the broadcast signal is terminated by reading the code data received from the broadcast station. As a result, when it is determined that the program is finished, the key input unit 42 monitors whether a key for channel switching is input while counting the program end count once, and reads the code data as described above to continuously receive the received broadcast signal. Check if the program is finished and continue counting.

Then, as described above, if a key for channel switching is input while counting the program end count, the broadcast signal of the switched channel is received while clearing the counting value that has been counted, and is output to the cathode ray tube 32 as the main screen. .

However, if channel switching is not performed until the program ends a certain number of times in a fixed state, the microprocessor 40 switches the operation mode of the television receiver to the PIP operation mode so that the broadcast signals of the two channels are separated from the main screen. Print to the screen.

In other words, if the channel is not switched until the program ends a certain number of times in a fixed state, the broadcast signal of the channel being watched is output to the main screen and the main audio, and the broadcast signals received through the other channels are sequentially By broadcasting to sub-picture and sub-audio, the broadcast signal of another channel can be checked while watching the broadcast signal of a specific channel for a long time.

As described above, the present invention determines whether a program is terminated by reading a code data input while receiving and processing a broadcast signal of a specific channel on which a TV receiver is tuned, as a main screen. It determines whether the end number is over a certain number of times, and if there is no channel switching while the program is over a certain number of times, it operates the PIP function to sequentially tune the broadcasting signals of other channels and output them as sub-screens. While watching a broadcasting signal of a channel for a long time, it is possible to check the broadcasting signal of another channel which is not viewed through the sub-screen.

Claims (1)

In the process of displaying the broadcast signal of two channels received through two tuners as a main picture and a sub picture and displaying them on the cathode ray tube, the program is terminated by reading the code data input while receiving and processing the broadcast signal of the tuned channel as the main picture. Determining whether the program is terminated, and counting the program termination count when the program is terminated, and determining whether the termination count is a certain number of times. If there is no channel switching while the program is terminated more than the predetermined number of times in a specific channel, the PIP function is operated. And performing a step of sequentially tuning the broadcast signal of the other channel and outputting the sub-screen to the sub-screen.