KR100257055B1 - Cf broadcasting program skip reproducing apparatus for television having one tuner - Google Patents

Abstract

PURPOSE: An advertisement broadcasting skip reproducing controller of a television equipped with a single tuner is provided to continuously detect whether an advertisement broadcasting is proceeded by selecting one broadcasting channel at high speed in case that another broadcasting channel is tuned and reproduced. CONSTITUTION: A tuner(2) selects an RF signal of a determined broadcasting channel according to channel tuning data from a control unit. A video detection unit(6) detects a composite video signal of a television broadcasting signal. A video amplifying unit(8) amplifies the composite video signal detected. A video signal processing unit(10) separates a luminescence signal and a color signal from the composite video signal. A video output unit(12) reproduces a video on a CRT screen. An ADC(14) quantizes a video signal according to a television broadcasting from the video amplifying unit(8). The first video memory(16) stores a video signal included in a window area. The second video memory(18) repeatedly stores a video signal of the window area. A video comparison unit(20) compares video signals according the window area from the first and the second video memory(16,18). A synchronous separation unit(22) separates a synchronous signal from the video signal from the video amplifying unit(8). A function setting unit(24) is composed of a remote controller and a matrix button unit. A control unit(26) controls all sorts of setting operations.

Description

Commercial skip playback control unit of television with single tuner

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial skip reproduction control apparatus for a television equipped with a single tuner. More particularly, the present invention relates to a commercial skip in a typical television that reproduces images of a predetermined broadcast channel tuned by a single tuner on a single screen. When the execution state is detected, skip playback to other broadcasting channels is performed, and whether or not the commercial broadcasting is continued for the previous broadcasting channel where commercial broadcasting is detected even when a video signal corresponding to the broadcasting channel of the skip playback is being played. The present invention relates to a commercial skip reproduction control apparatus for a television having a single tuner, which enables the user to return to the previous broadcast channel corresponding to the end of the commercial.

In general, in a television having a single tuner for reproducing and reproducing only a single broadcast channel among a plurality of broadcast channels tuned from a plurality of television stations, color signals, luminance signals and horizontal / The vertical synchronization signal period is multiplexed so that an audio signal and an RF signal of a predetermined broadcast channel band transmitted over a predetermined frequency band are received and subjected to intermediate frequency amplification processing to separately detect the video signal and the audio signal. The luminance signal and the color signal are separated and luminance adjustment and color demodulation are performed respectively, and the image is synthesized and reproduced as a single screen by a scanning method on the CRT screen, and the audio signal is recognized by the pilot signal in stereo. Playback through the speaker is possible by signal processing or voice multiplexing. And to.

On the other hand, in the broadcasting station that transmits each program broadcasted through a number of these broadcast channels as a broadcast RF signal, commercials or non-profit corporations participated as advertising sponsors for social and economic reasons such as funding or promotion / campaign. Is broadcasted between each main broadcast program, and the viewer side obtains various kinds of product information due to such commercial broadcasting and can refer to the product purchase afterwards.

At this time, in the case of commercial broadcasting, such commercial broadcasting, advertising the product corresponding to various program characteristics such as sports broadcasting, drama or movie broadcasting of main broadcasting program or broadcasting characteristics such as viewer's age group by viewing time, etc. In this way, the viewers can optimally watch the commercials they want in time.

However, in a television equipped with such a single tuner, when a broadcast program reproduced on a single screen is a commercial, even if another broadcast program is reproduced by selecting and replacing another broadcast channel to avoid viewing the commercial, the corresponding broadcast program is applicable. Since it is not easy to determine whether the commercial is terminated for the broadcast channel on which the commercial is executed, there is an inconvenience that the user must repeatedly switch channels.

Accordingly, the present invention has been made in view of the above-described circumstances, and when skipping reproduction is performed to other broadcasting channels by detecting the execution state of commercial broadcasting for one broadcasting channel in a television equipped with a single tuner, the other During the vertical blanking period of the video signal according to the broadcasting channel, the channel selection of one broadcasting channel where the commercial is detected can be performed at high speed so that the execution of the commercial can be searched and returned to the previous broadcasting channel when the commercial is finished. It is an object of the present invention to provide a commercial skip reproduction control apparatus of a television having a single tuner.

According to the commercial skip reproduction control apparatus for a television equipped with a single tuner according to the present invention to achieve the above object, if a television broadcast signal of a predetermined broadcast channel tuned by a single tuner is amplified by an intermediate frequency by an image IF unit. A television having a single tuner which detects an image signal by an image detection unit and processes the image by an image processing unit and reproduces the image signal on a CRT screen through amplification driving of the image output unit. First image memory means for storing an image of a window area corresponding to a display area of a display subtitle for a main broadcast program formed during commercial broadcasting from the digitally converted video signal; A second zero for storing the video signal of the window area in which 60 frames have elapsed with respect to the video signal stored in the means The execution state of commercials according to the presence or absence of a display subtitle for the main broadcast program appearing in the corresponding window area by comparing the video signal from the memory means, the first video memory means and the video signal from the second video memory means, respectively. A video comparing means for detecting a video signal, and if the video comparing means determines that an image of one broadcasting channel is being broadcasted, another tuned channel is tuned and skipped by the tuner. During the vertical blanking period of the video signal according to another broadcast channel to be skipped and reproduced by the information, the tuner tunes one broadcast channel on which the commercial is detected at high speed to repeatedly execute the commercial broadcast by the video comparing means. When the commercial is terminated, the broadcast channel on one side is detected. And control means for controlling to return to the playback of the video in accordance provides a commercial of a television tuner with a single skip reproduction controller configured.

According to the present invention configured as described above, when it is determined that a video signal of one broadcast channel that is tuned and reproduced through the single tuner in a television having a single tuner is being broadcasted, another broadcast channel is tuned to skip playback. In the vertical blanking period of the video signal according to the other broadcast channel to be skipped and reproduced, the detection side broadcast channel of the commercial is tuned at high speed, and the commercial broadcast is repeatedly executed to search for the execution of the commercial. If detected, playback of one broadcast channel can be made.

1 is a block diagram showing the configuration of a commercial skip playback control apparatus for a television equipped with a single tuner according to the present invention;

FIG. 2 is a diagram illustrating a state of detecting a commercial continuous state of a channel to be broadcasted during a vertical blanking period of a video signal corresponding to a broadcast channel generally reproduced with respect to a broadcast channel reproducing a commercial according to an exemplary embodiment of the present invention. Indicated signal timing,

3 is a diagram illustrating an example of reproducing a state of detecting a commercial state on a video screen in a vertical blanking period of a video signal according to the signal timing diagram of FIG. 2 according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: tuner, 4: video IF section,

6: image detector, 8: image amplifier,

10: video signal processor, 12: video output unit,

14: ADC, 16, 18: video memory,

20: video comparison, 22: synchronous separation,

24: function setting section, 26: control section.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a commercial skip reproduction control apparatus for a television equipped with a single tuner according to the present invention. In the apparatus of the present invention, reference numeral 2 denotes a channel selection from the control unit 26 described later. A tuner which tunes an RF signal of a predetermined broadcast channel according to data and amplifies it to a high frequency, converts it into an intermediate frequency signal by mixing with a local oscillation frequency signal generated by the channel tuning data, and 4 denotes the tuned intermediate frequency. An image IF unit for intermediate frequency amplifying a television broadcast signal in a signal form is shown.

Here, the tuner 2 is a broadcast channel in which a commercial is detected within a vertical blanking period (VBL) of a video signal according to the other broadcast channel in a state in which channel switching to another broadcast channel occurs after the commercial is detected. This allows you to tune in at high speed.

Also, reference numeral 6 denotes an image detector for detecting a composite video signal of the intermediate frequency-amplified television broadcast signal, and 8 denotes an image amplification process for multi-stage signal amplification of the detected composite video signal to an amplification level capable of image processing. Represents wealth.

Reference numeral 10 denotes an image signal processor which separates the luminance signal and the color signal from the signal-amplified composite image signal, synthesizes the RGB signal through luminance adjustment and color demodulation, and outputs the RGB signal. It is amplified and driven by a signal to represent an image output unit for reproducing an image on a CRT screen.

Reference numeral 14 denotes an analog-to-digital converter (ADC) for sampling, quantizing, and digitally converting the video signal from the video amplifier 8 according to television broadcasting. The recording operation is enabled by the enable signal EN, so that the window area WA corresponding to the display position of the display subtitle indicating the program name of the main broadcast program while the commercial is running on the digitally converted video signal is shown in FIG. ) Shows a first video memory, for example, which is a frame memory for storing and buffering the video signals included therein, and 18 indicates that the recording operation is enabled by the enable signal EN of the controller 26 to be described later. In the video signal from the ADC 14, the video signal of the window area WA is repeatedly stored for a predetermined period and then buffered to the frame memory. The second image memory is shown.

Further, reference numeral 20 denotes a program of the main broadcast program displayed on the screen during the execution of commercials by comparing the video signals corresponding to the window area WA from the first video memory 16 and the second video memory 18. An image comparator for detecting an execution state of a commercial according to the presence or absence of a display subtitle for a name is shown.

Reference numeral 22 denotes a synchronous separator that separates a synchronous signal from the video signal from the video amplifier 8 and outputs it to the controller 26 to be described later so that the vertical blanking period by the synchronous signal can be determined.

Reference numeral 24 denotes a matrix button portion provided in a remote control remote control or a predetermined portion of the control panel of the main body, and indicates a function setting portion that performs setting operation related to tuning of a television broadcast such as switching of a broadcast channel and its video / audio processing.

Further, reference numeral 26 is a control unit for controlling various setting operations for a preset broadcast channel and its video / audio signal according to the key operation of the function setting unit 24. The control unit 26 is a first broadcast. If it is detected by the video comparing unit 20 that the video signal V1 of the channel is being broadcasted, another tuner 2 is tuned to the tuner 2 and the video signal of the second broadcast channel. The vertical blanking period VBL for V2 is determined by the synchronization signal from the synchronization separator 22, and the image signal of the image scanning line SL corresponding to the window area WA is converted into the second image. The first broadcast channel is tuned at a high speed during the vertical blanking period so that the first broadcast channel is stored in the memory 18 so as to compare the images, thereby controlling whether or not the commercial is repeatedly executed.

In this case, when the execution state of the commercial is not detected by the video comparator 20, the control unit 26 performs a control operation to return the tuning state to the previous broadcast channel where the commercial was detected.

Next, the operation of the present invention made as described above will be described in detail with reference to the accompanying drawings.

First, when the first broadcast channel is selected by the channel switching operation of the function setting unit 24, the control unit 26 applies channel tuning data for tuning the corresponding first broadcast channel to the tuner 2. The television broadcast signal of the first broadcast channel tuned by the tuner 2 is amplified by the video intermediate frequency by the video IF unit 4, and the video signal is detected by the video detector 6.

In this state, the image amplifier 8 amplifies the detected first image signal V1 in multiple stages, and the image signal processor 10 performs the signal amplified first image signal V1. The video signal is processed to be reproduced on the CRT screen through the video output unit 12.

At this time, the ADC 14 digitally converts the first video signal V1 from the video amplifier 8, and in the first video memory 16, the window area WA in the digitally converted video signal. While only the video signal included in the video signal is stored, the second video memory 18 stores the video signal of the window area WA after a predetermined period of time with the first video memory 16.

On the other hand, the image comparing unit 20 compares the first video signal V1 corresponding to the window area WA from the first and second video memories 16 and 18 and compares the first video signal V1 with the main broadcast program. The presence of a display subtitle indicating the program name is detected to detect that the first broadcast channel is being broadcasted.

Accordingly, the control unit 26 controls the tuner 2 to tune to another second broadcast channel, and the video signal V2 of the second broadcast channel is controlled by the synchronization signal supplied from the sync separation unit 22. The first video signal V1 tuned during the vertical blanking period by allowing the tuner 2 to tune to the first broadcast channel at which the commercial is detected at a high speed for each vertical blanking period VBL. The image signal corresponding to the scan line SL for scanning the window area WA is stored in the second image memory 18.

As a result, the image comparator 20 is configured in the window area WA according to the image signal stored in the first image memory 16 and the scan line SL output from the second image memory 18. The video signal is compared with each other to search for the existence of a display subtitle indicating the program name of the main broadcast program. The control unit 26 detects the program name of the main broadcast program based on the detection result from the video comparison unit 20. If the commercial subtitle is detected as not being detected, the tuner 2 selects the previous first broadcast channel again so that it can be reproduced through video signal processing.

According to the present invention made as described above, when an image of one broadcasting channel is detected as being broadcast on a television and the other broadcasting channel is tuned and reproduced, the commercial is detected during the vertical blanking period of the other broadcasting channel. Since one side of the channel can be tuned at high speed to continuously detect whether or not the commercial is in progress, the TV with a single tuner has the advantage of avoiding viewing of the commercial.

Claims (1)

When the television broadcast signal of a predetermined broadcast channel tuned by a single tuner 2 is amplified by an intermediate frequency by the video IF unit 4, the video detector 6 detects the video signal and the video processing means 8, 10) A television having a single tuner which is image-processed by 10) and reproduced on a CRT screen through amplification driving of the image output section 12. Data conversion means (14) for digitally converting an image signal from the image processing means (8, 10); First video memory means (16) for storing an image of a window area (WA) corresponding to a display area of a display subtitle for a main broadcast program formed during commercial broadcasting from the digitally converted video signal; Second image memory means 18 for storing an image signal of the window area WA in which 60 frames have elapsed with respect to the image signal stored in the image memory means 16, The video signal from the first video memory means 16 and the video signal from the second video memory means 18 are respectively compared to determine whether there is a display subtitle for the main broadcast program appearing in the corresponding window area WA. Image comparison means 20 for detecting the execution state of the commercial according to, If it is determined by the video comparing means 20 that an image of one broadcast channel is being broadcast, another broadcast channel is tuned and skipped by the tuner 2, and a vertical blanking period provided from the synchronization separator 22 is provided. The video comparison means 20 causes the tuner 2 to tune to one of the broadcast channels on which the commercial is detected in the vertical blanking period of the video signal skipped and reproduced according to the corresponding information. The control unit 26 is configured to repeatedly detect whether the commercial is executed and to return to the reproduction of the video according to one broadcasting channel when the commercial is terminated. Commercial skip playback control device for television.

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