KR20000040890A - Method for converting channel when broadcasting advertise on television - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel switching method in a television. In particular, the present invention relates to a channel that automatically switches to a channel that transmits a desired broadcast genre during commercials in a selected channel and then switches back to the selected channel when the commercial ends. The present invention relates to an automatic channel switching method for commercials.

According to the present invention, when a user sets a broadcast program of a specific genre to watch during a commercial, the broadcast system detects a broadcast character in a received broadcast signal to determine whether the broadcast is commercial, and also provides an extended data service (EDS). The genre of the broadcast program received from each channel is determined by using the information added to the broadcast signal of the channel, and the selected channel is automatically switched to the channel that transmits the desired broadcast genre during the commercial broadcast. Switching to a channel provides the convenience of watching a desired genre of program without key manipulation during commercials.

Description

A channel changing method while receiving commercial in a television

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel switching method in a television. In particular, the present invention relates to a channel that automatically switches to a channel that transmits a desired broadcast genre during commercials in a selected channel and then switches back to the selected channel when the commercial ends. The present invention relates to a channel switching method in a commercial.

1 shows a block diagram of a general television.

As shown in the drawing, a conventional general television tuner 50 extracts only a frequency band of a channel selected by a user by tuning a radio frequency signal received through an antenna ANT from airwaves, and according to an input local oscillation signal. IF detector 60 for detecting an intermediate frequency from the frequency band signal of the channel tuned through the tuner unit 50, and an image intermediate frequency signal (PIF) and audio from the signal output from the IF detector 60. P / S separation unit 70 for separating the intermediate frequency signal (SIF), and voice detector for separating the voice signal (S) from the voice intermediate frequency signal (SIF) output from the P / S separation unit (70) And an image detector 110 for separating the image signal P from the image intermediate frequency signal PIF output from the P / S separator 70, the audio detector 80, and an input. After the voice signal (S) of the external device 150 is selected according to the input control signal Select a predetermined signal according to a selection signal input from the audio processor 90 that is externally displayed through the speaker 100 and the image signal P of the image detector 110 and the external device 150. Thereafter, the luminance signal and the color signal are separated, and each color band is extracted from the color signal, and then demodulated and transmitted to the CRT 140. The image processor 120 receives a signal corresponding to the input operation control signal. OSD (On Screen Display) 130 for outputting the information on the CRT (140) screen to overlap the screen, and various operation modes (tuning, volume control, screen control, external device mode switching) of the television Etc.), a remote controller 20 for remotely controlling various operation modes of the television, and a remote controller key for receiving a signal output from the remote controller 20 and outputting a signal accordingly. Signal input And a microprocessor 40 for controlling the overall operation of the television by controlling a corresponding component in accordance with a signal output from the key panel 10 or the remote controller key signal input unit 30.

The operation of such a television is explained as follows.

When the user selects a broadcast channel using the key panel 10 or the remote controller 20, the microprocessor 40 outputs a corresponding tuning voltage to the tuner unit 50 to tune the corresponding channel. As described above, in the broadcast signal of the broadcast channel tuned by the tuner unit 50, an intermediate frequency is detected from the broadcast signal through the IF detector 60, and the voice intermediate frequency is passed through the P / S separation unit 70. The signal SIF and the image intermediate frequency signal PIF are separated.

The voice intermediate frequency signal SIF output from the P / S separation unit 70 passes through the voice detector 80 and the voice signal S is detected, and the voice processor 90 undergoes a predetermined process. The image intermediate frequency signal PIF output through the speaker 100 and output from the P / S separation unit 70 passes through the image detector 34 to detect the image signal P, thereby processing the image processor 120. ) Is output to the CRT 140 through a predetermined process, and is applied to the character detector 160 to detect a character from the signal, and is similarly output to the CRT 140 through a predetermined process.

Meanwhile, the television displays a menu screen, channel change information, volume change information, and input signal (RF or AV input) change information in the form of characters or figures on a video screen displayed by the CRT 140. It is equipped with OSD function, and OSD function displays the corresponding character screen on the background of the displayed image screen or displays the corresponding character screen on the blue-back image screen. This is a very useful feature to make it easy to recognize.

When a channel is selected to watch a specific broadcast program in such a conventional television, when an advertisement broadcast other than the main broadcast is received, a viewer who does not want to watch the advertisement broadcast changes to another channel by key operation and waits for the advertisement to be ended.

At this time, in order to know whether the commercial has ended, it is necessary to switch the program to be watched by the key operation several times, which is very troublesome.

Therefore, the present invention is to find a way to automatically switch to another channel that broadcasts the program of the desired genre during the commercial time of the program to be watched, and then to return to the channel when the commercial ends.

An object of the present invention to solve the conventional problem is to automatically switch to another channel that transmits the desired broadcast genre during commercials in the selected channel, and then advertising on television that can switch back to the selected channel when the commercial ends It is to provide a channel switching method during broadcasting.

1 is a block diagram of a general television

2 is a block diagram of a television adopted in accordance with the present invention;

3 is a flowchart illustrating a channel switching process during commercials according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10 key panel 20 remote control

30: remote control key signal input unit 40: microprocessor

50: tuner 60: IF detector

70: P / S separation unit 80: voice detector

90: voice processing unit 100: speaker

110: image detector 120: image processor

130: OSD unit 140: CRT

150: external device 160: memory

170: character detection unit 180: KBPS decoder

The channel switching method for the commercial in the television of the present invention for achieving the above object is the process of determining whether to change the channel, the process of switching the channel when changing the channel and determining whether the received broadcast program is commercial; If the received broadcast is a commercial, the process of determining whether the automatic channel switching is set during the commercial broadcast; if the automatic channel switching is set during the commercial broadcasting, storing the currently selected channel information and performing automatic channel switching, and periodically Receiving a broadcast signal of the previous channel stored in one frame, and then detects the broadcast character to determine whether the commercial is terminated, and when the commercial is terminated is characterized in that the process of returning to the previous channel.

The above 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, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

The configuration of the television employed in the embodiment of the present invention includes storage means for storing the video signal P in the configuration of a general television as shown in FIG. 2, and broadcast character detection means for detecting broadcast text in the video signal P. As shown in FIG. And a decoder of KBPS (Korea Broadcasting Program System), which is one of broadcasting systems providing extended data services to a general television.

That is, the key panel 10, the remote controller 20, the remote controller key signal input unit 30, the microprocessor 40, the tuner unit 50, the IF detector 60, the P / S separator 70, and the voice. The detector 80, the audio processor 90, the speaker 100, the image detector 110, and the image processor 120, the OSD unit 130, the CRT 140, the memory unit 160, and the character detector 170 and KBPS decoder 180.

In such a configuration, the key panel 10 or the remote controller 20 is an input means for operating the television, a setting key for automatic channel switching during commercials, a volume up / down key for volume control, and a quality control A plurality of keys including a predetermined key (menu key, image quality adjustment key, direction key, number key), a key for sound quality setting, and a key for image quality setting are provided to output a key signal corresponding to a user's key operation. Typically, the remote control 20 which can be input at a remote location transmits a key signal corresponding to a key operation on an infrared carrier, and the remote control key signal input unit 30 provided in the television body demodulates the received infrared carrier. Detection and amplification are applied to the microprocessor 40 described later.

The microprocessor 40 controls the overall operation of the television based on the key signal from the key panel 10 or the remote controller 20, and in particular, the data and character detection unit for the program genre detected by the KBPS decoder 170. On the basis of the broadcast character data provided by the 160 controls the channel automatic switching during the commercial.

Meanwhile, the voice processing unit 90 is a signal capable of outputting a voice signal received by the tuner unit 30 and applied through the IF detector 60, the P / S separation unit 70, and the voice detector 80. Processed and output to the speaker 100, and adjusts the volume of the output under the control of the microprocessor (40).

The image processor 120 processes the image signal received from the tuner unit 30 and applied through the IF detector 60, the P / S separation unit 70, and the image detector 110 into a displayable signal, thereby providing a CRT. Output to 140.

In addition, the OSD unit 130 is a character screen display means for synthesizing the OSD text signal corresponding to the control of the microprocessor 40 to the image signal output from the image processing unit 120 and outputs it to the CRT 140.

The memory unit 160 stores the image signal P output from the P / S separation unit 70 by one frame, and the broadcast character detection unit 160 broadcasts the broadcast signal from the image signal P stored in the memory unit 160. Is detected and output to the microprocessor 60.

In addition, the KBPS decoder 170 is a component for decoding a KBPS signal which is one of a broadcast system providing an extended data service for extracting the data added to the broadcast signal received from the tuner 50 and output to the microprocessor 40 to be.

KBPS is a digital signal for broadcasting programs and scheduled recording data such as channels, program genres (eg, news, drama, sports, etc.), broadcasting start / end times, viewing grades and standard time data on broadcast signals. The signal is decoded by the KBPS decoder on the image receiving device side to perform broadcast program reservation recording function, etc., by inserting the signal into an arbitrary horizontal line during the vertical blanking interval (VBI). Make sure

Next, a description will be given in detail with reference to the flowchart of FIG. 3 attached to a channel automatic switching process during commercials in a television according to a preferred embodiment of the present invention.

When the main power is supplied to the television, the microprocessor 40 puts the television on standby and waits for a key input by the user through the key panel 10 or the remote controller 20.

At this time, when the user presses the power-on key by using the key panel 10 or the remote controller 20, the microprocessor 40 recognizes this and converts it into an active state, and the video and audio are performed at the previously selected channel, volume, and image quality. Each component is controlled to output to the CRT 140 and the speaker 100.

In operation S100, it is determined whether a channel change key is input.

As a result of the determination, if the user does not input the channel change key, after performing another function of the television, the process returns to step S100 to determine whether to change the channel (S110).

However, if the user inputs a channel up / down key or a desired channel number for channel change using the key panel 10 or the remote controller 20, the tuner unit 50 switches to the selected channel and then receives the received channel. One frame of the video signal output through the P / S separation unit 70 from the broadcast signal is stored in the memory unit 160 (S120 and S130).

Then, the broadcast character detection unit 170 detects the broadcast character from the image signal of one frame stored in the memory unit 160 and outputs the character to the microprocessor 40 together with the detected position information (S140).

The microprocessor 40 determines whether an advertisement is being broadcast based on the data output from the broadcast character detector 170 (S140). The determination of whether the commercial is broadcast is determined by the presence or absence of a broadcast character informing the name of a program to be continued after the commercial broadcast on the upper left or right side of the screen.

As a result of the determination, if the advertisement is being broadcast, it is determined whether the user has set the genre of the broadcast program to be viewed by executing automatic channel switching during the advertisement (S160).

In other words, the user may use the automatic channel switching setting key provided in the key panel 10 or the remote controller 20 to watch an advertisement broadcast before or during the start of the broadcast, and to view the genre (news and entertainment) to be viewed through another channel. , Drama, film, culture, etc.) is determined.

As a result of determination, if automatic channel switching is set, the currently selected channel information is stored in the internal memory (S170), a channel other than the currently selected channel is searched, and based on the information added to the broadcast signal detected by the KBPS decoder 170. The genre of the received broadcast program is determined, and it is determined whether the genre of the received broadcast program is the same as the genre set for performing automatic channel switching (S180 to S200).

As a result of the determination in step S200, steps S180 to S200 are performed until a channel for transmitting a broadcast program of the same genre exists or channel search ends.

As a result of the determination in step S200, if there is no channel that transmits the same broadcast program as the genre to be watched during the automatic channel switching, the microprocessor 40 controls the OSD unit 130 to transmit the broadcast program of the genre to be watched during the automatic channel switching. Inform the viewer that the channel does not exist (S220).

However, when the determination result in step S200 is that the same broadcast program as the genre to be watched when the automatic channel switching exists, the microprocessor 40 controls the tuner unit 50 to switch to the channel (S230).

In addition, periodically, the broadcast signal of the previously selected channel (the channel to be returned when the commercial is finished) is received in one frame and stored in the memory unit 160, and the broadcast character detection unit 170 detects the stored video signal. It is determined whether the commercial is terminated on the basis of the outputted text, and whether or not the end of the broadcast commercial is also determined as the presence or absence of broadcast text informing the name of a program to be continued after the commercial broadcast on the upper left or right side (S240 to S260).

As a result of the determination, when the commercial is terminated, the channel is returned by reading the previously stored channel information and switching (S270).

While the invention has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention as set forth in the claims. Anyone can see it easily.

As described above, according to the present invention, when a user sets a broadcast program of a specific genre to be watched during commercial broadcasting, the broadcast signal of the broadcasting system detects the broadcasting character from the received broadcasting signal to determine whether the commercial is broadcast, and provides an extended data service. The genre of the broadcast program received from each channel is determined using the information added to the channel, and the channel is automatically switched to the channel that transmits the desired broadcast genre during commercials in the selected channel. By doing so, it is possible to provide a convenience of watching a desired genre of program during the commercial without key manipulation.

Claims (3)

The channel switching method for commercial broadcasting includes the process of determining whether to change the channel, the process of switching channels when the channel is changed, and determining whether the received broadcasting program is an advertising broadcast. The process of determining whether to set up the conversion, if the automatic channel switching is set during the commercial broadcast, the process of storing the currently selected channel information and automatically switching channels, and periodically receiving and storing the broadcast signal of the previous channel 1 frame And then determining whether the commercial has ended, and returning to the previous channel when the commercial is terminated. The method of claim 1, And whether or not the advertisement is broadcasted and whether the advertisement is terminated is determined by the presence or absence of a broadcast character informing the name of a program to be continued after the advertisement, such as on the upper left or right side of the screen. The method of claim 1, Detecting the genre of the broadcast program received for all channels other than the currently selected channel, and switching to the channel if the same channel as the genre set for performing automatic channel switching exists. Otherwise outputting as OSD text that there is no channel broadcasting a program of a genre to perform automatic channel switching.