KR19990050601A - Main screen playback processing device according to commercial search of multi-screen television - Google Patents

Abstract

According to the present invention, when a commercial is detected in a playback channel of a main screen in a multi-screen television, the playback channel of the main screen is switched to a broadcast channel of the same genre and played by a different tuner for the broadcast channel in which the commercial is detected. Provided is a main screen reproduction processing apparatus according to a commercial search of a multi-screen television that allows the previous broadcast channel to be replayed by the main screen when the end of the commercial is detected by performing the broadcast detection operation.

To this end, the present invention uses the first and second image processing means (12, 14) (16, 18) for video signals of multiple broadcast channels simultaneously tuned by the first and second tuners (2, 4). In a multi-screen television which performs video processing by synthesizing the video as a main / sub picture by the multi-screen synthesis output units 20 and 22, the multi-channel television signal selected by the second tuner 4 Transmission data receiving processing means (24, 26) for receiving and extracting transmission data included in the vertical blanking period, and decoding the transmission data from the extracted multiple broadcast channels to genre code data of the broadcast program for each time zone. As the commercial data is detected, the transmission data decoding means 28 outputs and the video signal from the first tuner 2 processed by the first image processing means 12 and 14 is detected. Tuned to tuner (4) Switch means 30 for forming a switching path so that the video signal corresponding to the broadcast channel of the commercial signal to be converted is applied by the detection operation of the commercial signal, and commercially broadcasted by the character recognition process from the video signal from the switch means 30. Character recognition processing means 32 for detecting a character related to the execution state of the data; data memory means 36 for storing genre code data of time-division broadcast programs for a plurality of broadcast channels from the transmission data decoding means 28; If it is detected by the character recognition processing means 32 that the first broadcast channel tuned by the first tuner 2 is an advertisement broadcast, the genre code data of the data memory means 36 indicates that The second broadcast channel having the same genre as the main broadcast program is tuned through the first tuner 2 so that the main picture is reproduced, and the first broadcast channel is made through the second tuner 4. Switching control of the switch means 30 so that a video signal according to commercials is supplied to the character recognition processing means 32, and the end of the commercial is detected by the character recognition processing means 32. When the first tuner (2) is characterized in that it comprises a control means for controlling to re-tune the broadcast channel after the commercial broadcast is completed to reproduce the main screen.

Description

Main screen playback processing device according to commercial search of multi-screen television

The present invention relates to a main screen reproduction processing apparatus according to a commercial search of a multi-screen television, and more particularly, to a multi-screen television which simultaneously tunes a plurality of broadcast channels by a plurality of tuners and simultaneously reproduces them by a main / sub picture. If it is detected that the broadcast program played on the main screen is a commercial, the video played through the main screen is played as a broadcast program of another broadcast channel having the same genre as the previous main screen play channel, and the advertisement is transmitted through another tuner. The present invention relates to a main screen reproduction processing apparatus according to a commercial search search of a multi-screen television that detects whether the broadcast is terminated and enables the reproduction state of the main screen to return to the previous broadcast channel when the commercial is terminated.

As is well known, in general television, only a single channel is tuned through a single tuner among a plurality of channels transmitted from a plurality of television stations, so that the video / audio can be reproduced through a CRT screen and a speaker through video / audio processing. Bars such as a single channel television and playback function allow only one channel to be tuned and reproduced, so that the broadcast content of the other channel cannot be easily grasped in the reproduction state of one channel.

In view of this point, at present, a plurality of broadcast channels are tuned through a plurality of tuners, and the broadcast signal of one channel among the tuned broadcast channels is used as a playback signal on a main screen having a normal screen dimension. Simultaneous reproduction of the main / sub picture from the CRT picture by allocating and assigning the broadcast signal of the other channel as a reproduction signal of a sub picture having a relatively small picture dimension with respect to the main picture. PIP (Picture In Picture) playback function has been developed and adopted to allow simultaneous viewing of multiple channels through the PIP playback function. According to this PIP playback function, a plurality of sub-screens are formed on a single main screen to broadcast at least three or more broadcasts. Simultaneous playback of channels is possible.

In addition, the broadcasting station that transmits such a television broadcast signal between commercial and non-profit corporations as advertising sponsors for each of the main broadcast programs for social and economic reasons, such as funding or publicity / campaigns necessary for its operation. In order to broadcast through the broadcast, the viewer side obtains a variety of product information due to such commercial broadcasting so that they can refer to future product purchases.

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 viewer can optimally watch the desired commercial broadcast in a timely manner. During such commercial broadcasting, the subtitle signal according to the broadcast name of the main broadcasting program is transmitted together to provide a predetermined portion of the video screen. To always display on the screen.

However, in a multi-screen television, when a broadcast program of a predetermined broadcast channel is played through the main screen, and the content of the broadcast program is not commercial, the playback channel through the main screen is switched. And even if you want to monitor the end status of commercials through the sub-screen, you can't recognize the genre or program contents of the broadcasting program you want through the main screen. Even if it is desired to reproduce on a sub-screen, there is an inconvenience that a repetitive key operation must be preceded.

Accordingly, the present invention has been made in view of the above circumstances, and when a commercial broadcast is detected in a playback channel of a main screen in a multi-screen television, the playback channel of the main screen is switched to a broadcast channel of the same genre and played back. The main screen according to the commercial search of a multi-screen television, which performs a broadcast detection operation by another tuner on the detected broadcast channel so that the previous broadcast channel can be reproduced by the main screen once the end of the commercial is detected. It is an object to provide a regeneration processing apparatus.

According to the main picture reproduction processing apparatus according to the commercial search of the multi-screen television according to the present invention in order to achieve the above object, the first and second video signals of the plurality of broadcast channels simultaneously tuned by the first and second tuners; In a multi-screen television, which is processed by each of the second image processing means and synthesized and reproduced as a main / sub picture by the multi-screen synthesis output unit, in the video signals of the overall multiple broadcast channels tuned by the second tuner. Transmission data receiving processing means for receiving and extracting transmission data included in the vertical blanking period, and decoding the transmission data from the extracted multiple broadcasting channels and transmitting data decoding for outputting genre code data of the broadcasting program for each time zone. Means for the video signal according to the main picture from the first tuner which is image-processed by said first image processing means. A switch means for forming a switching path such that an image signal according to a broadcast channel of a commercial, which is converted into a tuning state to the second tuner as the commercial is detected, is applied by a commercial detecting operation, the image from the switch means Character recognition processing means for detecting a character related to an execution state of a commercial by character recognition processing in a signal, data memory means for storing genre code data of time-division broadcast programs for a plurality of broadcast channels from said transmission data decoding means; And, if it is detected by the character recognition processing means that the first broadcast channel tuned in the first tuner is an advertisement broadcast, a first genre having the same genre as the main broadcast program of the first broadcast channel by genre code data of the data memory means. The second broadcast channel is tuned through the first tuner to reproduce the main picture; Switching the switching means so that the first broadcast channel is tuned through the two tuners so that the video signal corresponding to the commercial is supplied to the character recognition processing means, and the end of the commercial is detected by the character recognition processing means. When the first tuner is provided with a control means for controlling the first channel tuned to the broadcast channel after the end of the broadcast to reproduce the main screen provides a main screen reproduction processing apparatus according to the commercial search of the multi-screen television.

According to the present invention configured as described above, if a broadcast program according to a predetermined broadcast channel of the main screen playback target tuned through a predetermined tuner among a plurality of tuners in a multi-screen television is detected as commercials, commercials are broadcasted through other tuners. The broadcast channel of the main screen reproduction target is reproduced as a broadcast channel having a broadcast program of the same genre as the broadcast channel of the commercial broadcast, and the termination state of the commercial broadcast is performed. Once detected, the main screen is made playable again.

1 is a block diagram showing the configuration of a main screen reproduction processing apparatus according to a commercial search of a multi-screen television according to the present invention;

2 is a view showing a window area on a video screen where a commercial is searched according to a preferred embodiment of the present invention;

3 is a flowchart illustrating operation in accordance with a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2, 4: tuner, 6, 8: video IF section,

10: multi-screen mode switching unit, 12, 16: video amplifier,

14, 18: image processing unit, 20: multi-screen synthesis unit,

22: video output unit, 24: synchronous separation unit,

26: data slicer, 28: data decoder,

30: switch portion, 32: character recognition processing portion,

34: function setting section, 36: data memory,

38: control unit.

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 a configuration of a main screen reproduction processing apparatus according to a commercial search of a multi-screen television according to the present invention. In the apparatus of the present invention, reference numerals 2 and 4 denote a controller 38 which will be described later. Receiving a plurality of channel tuning data according to the multi-screen playback mode from the channel and simultaneously tuning the corresponding broadcasting channel, and mixing with the local oscillation frequency signal generated by the respective channel tuning data and outputting them as intermediate frequency signals. The first and second tuners are shown, and 6 and 8 represent first and second video IF units which respectively perform intermediate frequency amplification processing of the television broadcast signals selected through the first and second tuners 2 and 4, respectively.

Further, reference numeral 10 selectively controls the main / sub picture reproduction state on the two screens for the television broadcast signals of the multiple broadcast channels through the first and second video IF units 6 and 8 according to the multi picture reproduction mode. A multi-screen mode switching unit for providing a switching path for doing so.

In addition, reference numeral 12 denotes a first video amplifying unit for multi-stage signal amplifying the video signal according to the main screen of the main / sub-screen through the multi-screen mode switching unit 10 up to an amplification level capable of image signal processing, 14 The first image processing unit divides the signal-amplified image signal into a luminance signal and a color signal, performs image compression by digital method through luminance adjustment and color demodulation, and performs image signal processing so that the entire image can be reproduced on the main screen. Indicates.

In addition, reference numeral 16 denotes a second image amplifier which amplifies the video signal according to the sub-screen among the two screens through the multi-screen mode switching unit 10 up to an amplification level capable of processing the video signal in multiple stages, and 18 denotes the above. After the video signal according to the multi-stage signal amplification process is divided into the luminance signal and the color signal, the luminance signal and the color demodulation process are performed, and the luminance signal and the color signal are processed by the first image processor 14. A second image processing unit which performs digital signal processing so as to be synchronized with a synchronization signal from a video signal according to a screen and performs the same data compression as the video of the main screen.

Also, reference numeral 20 denotes a multi-screen synthesis for performing image synthesis for reproducing a video signal corresponding to a main screen and a sub-screen through the first and second image processing units 14 and 18 on an accurate screen area on two screens. 22 denotes an image output unit which is amplified and driven by an image signal through the multi-screen synthesizing unit 20 to output two screens on the CRT screen.

Reference numeral 24 denotes a synchronization separator which separates a synchronization signal from the video signal according to the sub-screen from the second image amplifier 16 and extracts a horizontal / vertical synchronization signal, and 26 denotes the synchronization separator 24. Represents a data slicer for performing a data slice operation for extracting the transmission data in the form of digital data included in the vertical blanking period by the synchronization signal separated by).

Reference numeral 28 denotes a data decoder which decodes the transmission data extracted by the data slicer 26 and outputs genre code data indicating the program genre of the broadcast program for each broadcast channel.

In addition, reference numeral 30 is controlled by the control unit 38 to be described later to control the advertising of the video signal according to the main / sub picture from the first image amplifier 12 or the second image amplifier 16 Indicated by the switching unit for switching operation for switching the detection state, 32 is a display subtitle for the program name of the main broadcast program appearing during commercials in the video signal according to the main screen or the sub-screen through the switch unit 30 Is a character recognition processing unit that detects by the window area 40 (see FIG. 2) and performs character recognition processing.

Further, reference numeral 34 denotes a function setting unit which is constituted by a matrix button unit provided in a remote control remote control unit or a control panel predetermined unit of the main body, and performs mode switching according to the multi-screen playback mode and key operation for selecting multiple broadcast channels.

Reference numeral 36 denotes a data memory for storing time zone genre code data of a broadcast program for an overall broadcast channel applied from the data decoder 28.

Further, reference numeral 38 denotes a controller for controlling the simultaneous reproduction state through the channel selection and the main / sub picture of a plurality of broadcast channels by the multi-screen reproduction mode by the key operation of the function setting unit 34. The control unit 38 When the character recognition processor 32 determines that the video signal according to the main screen through the first image amplifier 12 is being broadcasted, the detection channel of the commercial broadcast is tuned through the second tuner 4. By switching the multi-screen mode switching unit 10 to switch the video signal according to the main screen as a reproduction target of the sub-screen, and to switch the mode of the switch unit 30 to the commercial signal. Is supplied to the character recognition processing unit 32 through the second image amplifying unit 16, and the genre code data of the data memory 36 has the same genre as the broadcast program of the broadcasting channel being broadcasted. room The channel is tuned by the first tuner (2) and controls the operation to play as the main screen.

In addition, when it is determined that the commercial is terminated by the character recognition processing unit 32 for the broadcast channel being broadcasted, the controller 38 selects the broadcast channel that has been played through the sub-screen. Tuning is performed on the first tuner 2 so that playback is possible through the main screen.

In addition, if there is no broadcast program having the same genre based on the genre code data of the data memory 36, the controller 38 selects and plays a broadcast channel adjacent to the broadcast channel from which the commercial was detected. Let's do it.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 3.

First, in step 42, a television broadcast signal of a plurality of broadcast channels tuned through the first and second tuners 2 and 4 is transmitted to the first and second video IF units 6 and 8 according to the execution of the multi-screen playback mode. When the intermediate frequency is amplified by the multi-screen mode switching unit 10, the first and second video amplifiers 12 and 16 output the video signals according to the main / sub-screen where the signal path is formed as the reproduction target of the main / sub-screen. Signal is amplified by the first and second image processing units 14 and 18, respectively, and then image-processed by the first and second image processing units 14 and 18 and synthesized by the multi-screen synthesizing unit 20 as a main / sub-screen. 22) is played through the medium.

At this time, the synchronization separator 24 separates the synchronization signal according to the video signal of the overall broadcast channel applied to the second video amplifier 16 according to the switching state of the overall broadcast channel by the second tuner 4. The transmission data included in the vertical blanking period for the video signal of each broadcast channel extracted through the data slicer 26 is decoded by the data decoder 28 for each time slot for each broadcast channel. The genre code data of the organized broadcast program is extracted and stored in the data memory 36.

Meanwhile, in step 43, multi-screen reproduction of main / sub picture is performed according to simultaneous reproduction of a plurality of broadcast channels by the first and second tuners 2 and 4 while genre code data for the overall broadcast channel is transmitted and stored. Is executed, and the character recognition processing unit 32 receives the switched video signal switched to the first image amplifying unit 12 to display the display subtitle which shows the program name of the main broadcast program during the execution of the commercial. Character recognition processing at 40 is performed.

In that state, the process proceeds to step 44, and the control unit 38 determines whether the character recognition processing unit 32 detects that the broadcast program of the broadcast channel reproduced on the main screen is an advertisement broadcast.

As a result of the determination in step 44, if it is determined that the character detected by the character recognition processing unit 32 is a display caption indicating the program name of the main broadcast program during commercial broadcasting, the control proceeds to step 45 and the data memory 36 On the basis of the genre code data of), it is determined whether there is a broadcast program of the same genre as the broadcast program of the video signal according to the main screen detected as the corresponding commercial broadcast is being executed.

As a result of the determination in step 45, if it is determined that the same genre exists in the same time zone as the broadcast program of the video signal according to the main screen from which the commercial is detected, the control proceeds to step 46 and through the first tuner 2. The other broadcast channels having the same genre are tuned to be reproduced as the main picture, and the previous broadcast channel for which the commercial is detected is tuned by the second tuner 4 and reproduced as the sub picture, but the switch unit ( 30 is switched so that the image signal corresponding to the sub-screen from the second image amplifier 16 can be supplied to the character recognition processor 32.

However, if it is determined that the same genre as the broadcast program of the broadcast channel in which the commercial is detected does not exist for the other broadcast channel, the control proceeds to step 47 and the first tuner 47 is performed. The channel adjacent to the broadcast channel in which the commercial is detected is tuned, and the previous broadcast channel in which the commercial is detected is tuned by the second tuner 4 to be reproduced as a sub-screen, but the switch unit 30 is Switching is switched so that an image signal corresponding to the sub-screen from the second image amplifier 16 can be supplied to the character recognition processor 32.

In step 48, the controller 38 determines whether the advertisement is terminated by the character recognition processor 32 for the broadcast program of the video signal according to the sub-screen.

As a result of the determination in step 48, if it is determined by the character recognition processing unit 32 that the program content of the video signal corresponding to the sub-screen that was being broadcast is ending the commercial, then the control proceeds to step 49 and the first step is performed. The tuner 2 is tuned to the previous broadcast channel where the commercial is terminated so that it is normally reproduced as the main screen, and the broadcast channel of the previous sub-screen reproduction target is also tuned to the second tuner 4 and reproduced as the sub-screen. Be sure to

According to the present invention made as described above, if the program content of the broadcast channel reproduced on the main screen in the multi-screen television is detected that the commercial broadcast, the detection channel of the commercial is reproduced through the sub-screen, Since the program contents of the broadcast channel reproduced on the screen are reproduced as the same program as the program genre according to the previous broadcast channel, other broadcasts of the same genre can be avoided by avoiding unwanted commercials without repetitive key operation by the user. The advantage is that the channel program can be easily watched.

Claims (3)

The first and second image processing means 12, 14 and 16 and 18 respectively perform image processing on video signals of multiple broadcast channels simultaneously tuned by the first and second tuners 2 and 4, respectively. In a multi-screen television, which is synthesized and reproduced as a main / sub picture by the synthesis output units 20 and 22, Transmission data receiving processing means (24, 26) for receiving and extracting transmission data included in a vertical blanking period and transmitted from video signals of a plurality of broadcast channels tuned by the second tuner (4); Transmission data decoding means 28 for decoding the transmission data from the extracted multiple broadcast channels and outputting genre code data of the broadcast program for each time zone; When the commercial is detected with respect to the video signal from the first tuner 2 which is image-processed by the first image processing means 12 and 14, it is converted into a tuning state to the second tuner 4. Switch means 30 for forming a switching path so that the video signal according to the broadcast channel of the commercial is applied by the detection operation of the commercial, Character recognition processing means 32 for detecting a character related to an execution state of a commercial by character recognition processing in a video signal from the switch means 30, Data memory means (36) for storing genre code data of time-division broadcast programs for a plurality of broadcast channels from said transmission data decoding means (28); If it is detected by the character recognition processing means 32 that the first broadcast channel tuned by the first tuner 2 is an advertisement broadcast, the main broadcasting channel of the first broadcast channel is generated by the genre code data of the data memory means 36. The character recognition processing is performed so that a second broadcast channel having the same genre as the broadcast program is tuned through the first tuner 2 to reproduce the main screen, and the first broadcast channel is tuned through the second tuner 4. The switching means 30 is controlled to supply the video signal according to the commercial to the means 32, and when the end of the commercial is detected by the character recognition processing means 32, the first tuner 2 And main control unit (38) for controlling the broadcasting channel after the commercial broadcasting is completed to reproduce the main screen. The method of claim 1, wherein the character recognition processing means 32 is a window area formed by the control of the control means 38 in the video area corresponding to the display caption of the main broadcast program displayed on the screen during the execution of commercials ( A main screen reproduction processing apparatus according to a commercial search of a multi-screen television, characterized in that the subtitle recognition of the main broadcast program is performed to determine whether or not the commercial is broadcast. 2. The broadcast channel according to claim 1, wherein the control means (38) does not exist in the same time zone as the first broadcast channel due to genre code data of the data memory means (36). The main screen reproduction processing apparatus according to the commercial search of a multi-screen television, characterized in that the playback to select.