KR0170974B1 - Video display blocking control apparatus by transmitting code data for television - Google Patents

Abstract

The present invention relates to an apparatus for controlling video interruption by transmission data of a television. The video signal of a predetermined channel tuned by the tuner 2 is amplified by the video intermediate frequency by the video IF module 4. In a television which has been amplified by a signal and then processed by a video signal processor (8) for video reproduction; Horizontal / vertical synchronous extracting means (10, 16, 18) for separating and extracting a horizontal synchronous signal and a vertical synchronous signal from the image signal from the image amplification unit (6), and in the vertical retrace period of the extracted synchronous signal. Transmission data detecting means (12,14) for detecting transmission code data having code information on the video blocking position included therein, and function setting means for keying an image blocking function for partially blocking the screen region to be reproduced (image); 20), the memory program 22 in which control program data for decoding the detected transmission code data is stored, and the transmission data detection means 12 and 14 are detected in accordance with the image blocking function by the setting means 20. Control means 24 for performing image blocking control for partially decoding the corresponding screen area by decoding the transmission code data to be controlled by the control program data, and the control of the control means 24. Display signal processing means (26, 28) for generating a display information signal for blocking an image at the same time and designating a display position synchronously with the extracted horizontal / vertical synchronization signal, and under the control of the control means (24). And switching switching means 30 for switching the screen region in which the generated display information signal is limited to the screen region to which the generated display information signal from the image signal processing unit 8 is switched. Characterized in that configured.

Description

Image blocking control device by transmission data of TV

1 is a block diagram showing an apparatus for controlling video interruption by transmission data of a television according to the present invention.

2 is a diagram showing a data packet structure in transmission code data having a data code designating partial blocking of a video screen according to a preferred embodiment of the present invention.

3 (a) and 3 (b) illustrate examples of partially blocking an image screen according to a preferred embodiment of the present invention.

4 is a flowchart illustrating the operation of the present invention.

* Explanation of symbols for main parts of the drawings

2: Tuner 4: Image IF Module

6: Image Amplifier 8: Image Signal Processor

10: synchronization separation unit 12: code data extraction unit

14: code data decoder 16: vertical synchronous extraction unit

18: horizontal synchronous extraction unit 20: function setting unit

22: data memory 24: control unit

26: OSD signal generator 28: display position designation

30: switching switching circuit 32: image output driver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling video interruption by television transmission data. More particularly, the present invention relates to a television that allows video blocking by OSD display data for a screen area designated by transmission code data superimposed on a television broadcast signal. An apparatus for controlling video blocking by transmission data of

At present, the TV which is generally used selects a desired channel among a plurality of channels transmitted in the form of airwaves from a plurality of television broadcasting stations and processes the image / audio signal so that the image can be reproduced through a CRT (Cathode Ray Tube). In addition, the speaker enables the voice to be played back.

On the other hand, television broadcasting stations that receive and transmit such television broadcasts are trying to diversify and specialize in broadcasting programs by riding on the trend of gradually diversifying viewing age and diversifying viewing tastes. In addition to the ease of broadcasting regulations, for example, erotic films and horror films, which were previously impossible to organize, can be boldly organized and broadcasted as broadcast programs.

By the way, the television receiving a broadcast program transmitted from such a television station is to allow a different age group to watch a single broadcast program at the same time for each home, such a broadcast program is not a program that can be flexibly watched by different age groups B. If the senior citizen includes broadcast contents that cannot be watched, the effect on viewing will be halved, and there will be limited viewing of various broadcasting programs.

Accordingly, the present invention has been made in view of the above-described circumstances, and the OSD is displayed for the screen area designated by the transmission code data by receiving the transmission code data included in the television broadcast signal and transmitted when the video blocking mode is set. It is an object of the present invention to provide an image blocking control apparatus using transmission data of a television which can block an image through data.

In order to achieve the above object, according to the image blocking control apparatus using the transmission data of a television according to the present invention, a video signal of a predetermined channel tuned by a tuner is amplified by an image intermediate frequency in an image IF module and amplified by an image amplifier. A television which is subjected to video signal processing by a video signal processing section and then reproduced video; A horizontal / vertical synchronous extraction means for separating and extracting a horizontal synchronous signal and a vertical synchronous signal from the image signal from the image amplification unit, and code information on an image blocking position included in a vertical retrace period of the extracted synchronous signal. Transmission data detecting means for detecting transmission code data, function setting means for keying an image blocking function for partially blocking the screen region to be reproduced, and control program data for decoding the detected transmission code data; According to an image blocking function by the memory means and the function setting means, the transmission code data detected by the transmission data detecting means is decoded by the control program data to perform image blocking control for partially blocking the corresponding screen area. Display means for controlling the video under the control of the control means Display signal processing means for generating a call and displaying a display position synchronously with the extracted horizontal / vertical synchronization signal, and switching at high speed under the control of the control means, according to the composite video signal from the image signal processing part. Provided is an image blocking control apparatus according to transmission data of a television, comprising switching switching means for restricting image blocking of a designated screen region in which the generated display information signal with respect to a screen region.

Preferably, according to the present invention, the transmission code data detected by the transmission data detecting means includes a header code, a synchronization code, a recognition code for recognizing that the code is for video blocking, and a horizontal position of a screen region to be blocked. And a horizontal position code specifying a vertical position code, and a vertical position code specifying a vertical position of the screen region to be blocked, and the control means decodes the horizontal position code to control the horizontal position of the screen region to block the image. In addition, the vertical position code is decoded to designate and control the vertical position of the screen region to block the image.

More preferably, in the present invention, the identification code constituting the transmission code data detected by the transmission data detection means is made of a data code for blocking the image area, and the control means is adapted to determine the image area according to the identification code. The first display character indicating whether or not to block the screen is displayed by the display signal processing means, and the recognition code constituting the transmission code data detected by the transmission data detection means is a data code for blocking the subtitle area. And the control means controls the second display character indicating whether the caption area is blocked according to the recognition code to be displayed on the screen by the display signal processing means.

According to the present invention made as described above, when the video block function is set in the television, a horizontal position for receiving the transmission code data superimposed on the television broadcast signal of the channel being reproduced to specify the screen area to be blocked By detecting the code and the vertical position code, a fast switching switching is performed on the composite video signal according to the result of the video signal processing so that the screen area designated for the entire screen area can be displayed on the screen by the OSD display information signal and blocked the video. Done.

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

That is, Fig. 1 is a block diagram showing an apparatus for controlling video interruption by transmission data of a television according to the present invention. In the apparatus of the present invention, reference numeral 2 denotes a channel for selecting a predetermined channel from the control unit 24, which will be described later. The tuner receives the channel tuning data VT to tune the corresponding channel and mixes the oscillation frequency signal generated by the channel tuning data VT to generate an intermediate frequency signal.

Also, reference numeral 4 denotes an image IF module for separating the video signal of the tuned broadcast signal and amplifying the video intermediate frequency, 6 denotes an image amplifier for signal amplifying the intermediate frequency amplified video signal, and 8 denotes the signal. A video signal processing unit which performs video signal processing for adjusting brightness of a luminance signal in an amplified video signal, performing color demodulation on a color difference signal, and synthesizing it as a composite video signal.

Reference numeral 10 denotes a synchronization separator for separating a synchronization signal from the image signal of the image amplifier 6, and 12 denotes code data extraction for extracting transmission code data included in a vertical retrace period of the separated synchronization signal. 14 denotes a code data decoder for recognizably decoding the extracted transport code data.

Here, the transmission code data is allocated to a predetermined period of the vertical retrace period of the NTSC composite video signal transmitted over the air as shown in FIG. 2, and the front end of the signal field (i.e., odd or even field) to be blocked. In the case of horizontal screen scanning for the header code 34, the synchronization code 35, the recognition code 36 for recognizing the blocking of the image portion or the blocking of the character portion, and the signal field to be blocked A horizontal position code 37 for designating a horizontal position in a vertical position, and a vertical position code 38 for specifying a vertical position in the case of vertical screen scanning for a signal field to be blocked.

Reference numeral 16 denotes a vertical synchronization extractor for extracting a vertical synchronization signal from the synchronization signal separated by the synchronization separator 10, and 18 denotes a horizontal synchronization extractor for extracting a horizontal synchronization signal from the separated synchronization signal. .

Further, reference numeral 20 denotes a matrix button unit installed in a remote control unit for remote control or a predetermined control panel of the main body to set the overall function operation of the television and to set the image blocking function for blocking the image of a predetermined screen area. The function setting section includes a video blocking key 20A for setting for executing the video blocking function.

Further, reference numeral 22 denotes code data constituting the transmission code data (i.e., a video blocking code and a character blocking code for the recognition code 36, a horizontal synchronization code for the horizontal position code 37, and a vertical position code ( 38) represents a data memory in which control program data for decrypting the vertical synchronization code for "

Reference numeral 24 denotes a control unit for controlling the execution state of the overall functional operation of the television. The control unit 24 controls the code data decoder 14 when the image blocking function is set by the function setting unit 20. Decoding the transmission code data based on the control program data of the data memory 22 to designate a screen region to block the image to generate an OSD display information signal for screen display of the image blocking region, as described later By controlling the switching switching circuit 30 at a high speed to control the image to be blocked.

In addition, reference numeral 26 denotes an OSD signal generator for generating an OSD display information signal for displaying a screen area to be blocked on the image under the control of the controller 24, and 28 denotes the horizontal OSD display information signal. A display position designation for designating a display position so as to occur synchronously with the horizontal synchronizing signal and the vertical synchronizing signal extracted by the synchronizing extractor 16 and the vertical synchronizing extracting unit 18 is shown.

In this case, when the OSD signal generating unit 26 is subjected to the blocking control of the image part under the control of the control unit 24, as shown in FIG. 3A, for example, blocking of the image area 42A such as image blocking is performed. A display position is designated by the display position designation unit 28 by generating an OSD display information signal for displaying the display character 40A indicating the state, and controlling the blocking of the subtitle portion by the control unit 24. Is generated by adding an OSD display information signal for displaying the display character 40B indicating the blocked state of the subtitle area 42B, for example, blocking the subtitle, as shown in FIG. The display position is designated by the display position setting unit 26.

Further, reference numeral 30 denotes a display as shown in FIG. 3A in the entire screen area by the composite video signal which is switched at a high speed under the switching control by the controller 24 and signal processed by the video signal processor 8. OSD display information signals from the OSD signal generator 26 are displayed on the screen in the text 40A and the image area 42A or in the display character 40B and the subtitle area 42B shown in FIG. A switching switching circuit for the display is shown, and 32 indicates an image output driver for power amplifying the composite video signal and the OSD display information signal through the switching switching circuit 30 so as to reproduce images.

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

First, when a predetermined channel is selected by the function setting unit 20 in step 50, the control unit 24 generates channel tuning data VT for tuning of the selected channel to the tuner 2, and the tuner ( The video signal of the channel tuned by 2) is separated by the video IF module 4 and amplified by the video intermediate frequency, and then amplified by the video amplifying section 6 and combined by the video signal processing section 8. The video signal is processed in the form of a video signal to reproduce the video.

In that state, the process proceeds to step 51, and the control section 24 determines whether or not the image blocking key 20A of the function setting section 20 is being keyed to execute the image blocking function.

As a result of the determination in step 51, if it is determined that the video blocking key 20A of the function setting unit 20 is being key operated, control proceeds to step 52 to synchronize the video signal reproduced by the synchronization separating unit 10. When the signal is separated, and the transmission code data is extracted from the separated synchronization signal by the code data extraction unit 12, and the extracted transmission code data is decoded by the code data decoder 14, the control unit 24 On the basis of the control program data of the data memory 22, the decoded transmission code data determines whether the video portion is blocked or the subtitle portion is blocked by the recognition code 36 included in the transmission code data. The code area 37 and the vertical position code 38 decode the horizontal sync part and the vertical sync part to determine the video area to be blocked.

Accordingly, in step 53, the controller 24 controls the OSD signal generator 26 to generate the OSD display information signal for displaying the screen of the screen area to be blocked, and then displays the display position designator 28. In addition, the display position is designated and output by the control panel, and the switching switching circuit 30 is controlled at a high speed so that the generated OSD display information signal may block the image portion. As shown in FIG. 3 (b), for example, when the screen is displayed to block the image area 42A together with the screen display of the display character 40A called image blocking. In addition to the screen display of the display character 40B, a signal is passed to block the subtitle area 42B.

In step 54, the control unit 24 determines whether the image blocking key 20A of the function setting unit 20 is being keyed again to release the image blocking function.

As a result of the determination in step 54, if it is determined that the image blocking key 20A of the function setting unit 20 is being keyed again, control proceeds to step 55 to initialize the image blocking function and select the tuner from the tuner 2. The television broadcast of the corresponding channel can be played back normally.

According to the above-described present invention, the corresponding screen region can be blocked by receiving the transmission data including information for designating the screen region to be blocked by being included in the broadcast signal on the television. Therefore, there is an advantage that it is possible to easily block the screen area to avoid viewing.

Claims (4)

The video signal of the predetermined channel tuned by the tuner 2 is amplified by the video intermediate frequency in the video IF module 4 and amplified by the video amplifier 6, and then processed by the video signal processor 8 for video signal processing. In the television which is reproduced and reproduced, the horizontal / vertical synchronous extraction means (10, 16, 18) for extracting the horizontal synchronous signal and the vertical synchronous signal separately from the video signal from the video amplification unit (6); Transmission data detection means (12,14) for detecting transmission code data having code information on the video blocking position included in the vertical retrace period of the synchronized signal, and an image blocking function for partially blocking the screen region to be reproduced A function setting means 20 for setting a key, a memory means 22 having stored therein control program data for decrypting the detected transmission code data, and the transmission data according to an image blocking function by the function setting means 20. Control means 24 for performing image blocking control for partially blocking the corresponding screen area by decoding the transmission code data detected by the detection means 12 and 14 by the control program data; Display signal processing means (26, 28) for generating a display information signal for blocking the image under the control of the control panel) and designating a display position synchronously with the extracted horizontal / vertical synchronization signal, and controlling the control means (24). Switching switching means 30 for switching the screen at a high speed so that the generated screen information signal can be limited to the screen area specified by the generated display information signal for the screen area according to the composite video signal from the video signal processor 8. An apparatus for controlling video interruption by transmission data of a television, comprising: a television; The transmission code data detected by the transmission data detection means (12, 14) is a header code (34), a synchronization code (35), and a recognition code (36) for recognizing a code for blocking an image. ), A horizontal position code 37 for designating the horizontal position of the screen region to be blocked, and a vertical position code 38 for specifying the vertical position of the screen region to be blocked, wherein the control means 24 Designates and controls the horizontal position of the screen region to decode the horizontal position code 37 to block the image, and designates and controls the vertical position of the screen region to decode the vertical position code 38 to block the image. An apparatus for controlling video interruption by transmission data of a television. 2. The identification code (36) according to claim 1, wherein the recognition code (36) of the transmission code data detected by said transmission data detection means (12, 14) is made of a data code for blocking the image area (42A), and said control means ( 24 is characterized in that the first display character (40A) indicating whether or not the image area 42A is blocked in accordance with the recognition code 36 to control the screen display by the display signal processing means (26, 28) An apparatus for controlling video interruption by transmission data of a television. 4. The identification code (36) according to claim 3, wherein the recognition code (36), which constitutes the transmission code data detected by said transmission data detection means (12, 14), consists of a data code for blocking the subtitle area (42B), and said control means ( 24 is characterized in that the second display character 40B indicating whether or not the subtitle area 42BA is blocked according to the recognition code 36 is controlled to be displayed on the screen by the display signal processing means 26,28. An apparatus for controlling video interruption by transmission data of a television.