KR20060108057A - Method and apparatus for limiting display using seeing_and_hearing limit program in digital broadcasting receiver - Google Patents

Abstract

The present invention provides a viewing restriction that prevents a user from watching an unwanted program by providing a mosaic image until a time point of comparing the restriction information provided by the program with the restriction information provided by the program after changing a channel in digital broadcasting. Screen display limitation using a program relates to a digital broadcast receiver and method,

According to the present invention, by providing a mosaic image while receiving digital broadcast data and decrypting the parental level restriction information, the convenience of the user can be greatly improved as the user does not watch an unwanted parental level image. have.

Parental Control, Digital Broadcast, Mosaic, Show, PSIP, ATSC, RRT, MPEG

Description

Screen display limiting method using parental control program and method {Method and Apparatus for Limiting Display Using Seeing_and_Hearing Limit Program in Digital Broadcasting Receiver}

1 is a view for explaining a conventional parental level restriction method,

2 schematically illustrates a configuration of a digital broadcasting system 200 for explaining a method of limiting screen display using a parental control program according to an embodiment of the present invention.

3 is a flowchart illustrating a screen display restriction method using a parental control program according to an embodiment of the present invention.

4 illustrates a restriction program by a content notification descriptor (CAD) defined in the ATSC standard.

5 shows a program forming an item of a grade range table (RRT).

* Explanation of symbols for the main parts of the drawings

200: digital broadcasting system 210: analog video

212: analog audio 214: digital encoder

216 private data 218 mux

220: modulator 222: digital broadcast transmitter

230: digital broadcast receiver 232: demodulator

234: Demux 236: private data

238: digital decoder 240: analog video

242: analog video 250: lowpass filter

The present invention relates to a digital display receiver and method for screen display restriction using a parental control program. More particularly, the present invention relates to a digital broadcast receiver and a method for limiting screen display. Screen display limitation digital broadcast receiver and method using a parental control program by providing a mosaic image, so that a user does not watch the unwanted program.

In general, digital broadcasting transmits a program compressed and multiplexed according to the MPEG standard. Among the MPEG standards, MPEG-2 is an international standard for transmitting video and various data for next generation television broadcasting and satellite broadcasting. In MPEG-2, various signals for moving picture, sound, and other additional service information are packetized into bit streams, which include a program stream and a transport stream. In the multimedia communication using MPEG-2, the transmitting side loads and transmits a plurality of pieces of information in a transport stream, and the receiving side parses the information into a transport stream including a plurality of pieces of information and extracts the carried information. Decrypt and use. The transport stream includes program guide information for each broadcast program as well as broadcast programs for digital TV broadcasting. The program information included in the digital broadcast signal and serviced is included in the electronic program guide ( EPG) information.

The Program and System Information Protocol (PSIP) is defined as the EPG and System Information (SI). PSIP is a standard of the Advanced Television Systems Committee (ATSC) for terrestrial and cable digital broadcasting. It is defined to provide various information about a program by parsing messages encoded by the method of MPEG-2.

PSIP consists of several tables for transmitting and receiving A / V data in MPEG-2 video and AC-3 audio format, and transmitting information about channels of each broadcasting station and information about each program of channels. .

At this time, channel information for channel selection and packet identification number (PID) for receiving A / V are transmitted through a virtual channel table (VCT), and EPG information of broadcast programs of each channel is EIT ( Each event is transmitted through the Event Information Table.

In addition, digital broadcasting includes a rating region table (RRT) and a content advisory descriptor (PSIP) included in the PSIP to transmit information about regions and review institutions for program ratings. . This information is viewable restriction information of a program currently being broadcast, and generally includes information such as age, gender, and violence. Since this information is decoded after comparing the user setting and the parental control value via the PSIP decoder when changing the channel as shown in FIG. 1, a point in time later than the time when the program video and audio information is decoded by the A / V decoder Is detoxified. Accordingly, there is a problem that the decoding of the video and audio is performed first in time, and the parental level restriction information is subsequently decrypted, so that the user may watch a program of an undesired grade for a certain time.

In order to solve the above problem, the present invention provides a mosaiced image until a time point for comparing the rating restriction information provided by the program and the restriction information set by the receiver after changing a channel in digital broadcasting, thereby providing a user-desired viewing rating. It is an object of the present invention to provide a digital display receiver and method for screen display restriction using a parental control program so as not to watch a restricted program.

According to an aspect of the present invention, there is provided a screen display limiting digital broadcast receiver using a parental control program, which includes: a receiver configured to tune a specific broadcast channel according to channel selection of a user and receive a digital broadcast signal; A demodulator for demodulating the received digital broadcast signal; A demux for parsing the demodulated digital broadcast signal into video, audio, and private data; A digital decoder for converting parsed video and audio data into analog video signals and analog audio signals; And a low pass filter configured to low pass filter the video signal to output a mosaiced video signal.

In addition, the screen display restriction method using a parental control program of the digital broadcast receiver according to another object of the present invention, the first step of demodulating the digital broadcast signal received according to channel selection and parsing into video, audio and private data; A second step of determining whether to restrict the viewing by comparing the parental level setting value set by the user with the parental level setting value included in the digital broadcasting signal based on the private data; And outputting a mosaic-passed low-pass video on the screen through the low-pass filter when the viewing restriction is not determined.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings.

In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

FIG. 2 schematically illustrates a configuration of a digital broadcasting system 200 for explaining a screen display limiting method using a parental control program according to an embodiment of the present invention.

As shown in FIG. 2, the digital broadcast system 200 includes a digital broadcast transmitter a and a digital broadcast receiver b.

First, the digital broadcast transmitter (a) includes a digital encoder 214 for converting an analog video 210 signal and an analog audio 212 signal into a digital signal; A mux 218 for mixing and mixing private data 216 including channel information, EPG information, and the like into a digital video / audio signal; A modulator 220 for modulating the combined data of the digital video / audio signal and the private data into a transmission signal; And a digital broadcast transmitter 222 for transmitting a transmission signal by wire or wirelessly.

The digital broadcast transmitter (a) configured as described above transmits the rating limit scheme through the rating range table (RRT) shown in FIG. 5, and uses the content notification descriptor (CAD) shown in FIG. ) Transmits the rating limit of the current program. Therefore, when the digital broadcast receiver (b) matches the limit value of the current program with the table of the grade range table (RRT), the limit information of the current program can be known.

Meanwhile, in FIG. 2, the digital broadcast receiver b includes a digital broadcast receiver 230 for tuning a specific broadcast channel according to a channel tuning command of the user and receiving a digital broadcast signal; A demodulator 232 for demodulating the received digital broadcast signal; DeMUX 234 for parsing the MPEG transport stream of the demodulated digital broadcast signal into video, audio and private data 236; A digital decoder 238 which converts the parsed digital video and audio data into an analog video 240 signal and an analog audio 242 signal and outputs the converted analog video 240 signal; And a lowpass filter 250 for outputting a mosaiced video signal.

3 is a flowchart illustrating a screen display restriction method using a parental control program according to an embodiment of the present invention.

First, a user executes a parental control program through a key input unit provided at the front of a remote controller or a digital broadcasting receiver, and sets a parental level restriction function for age, gender, and violence.

In the state where the parental level restriction function is set, the digital broadcast receiver b receives the digital broadcast data transmitted from the digital broadcast transmitter a through the digital broadcast receiver 230 (S302).

For example, a KBS broadcasting station transmits a digital broadcasting data called "KBS News" with a grade limit of 7 grades by age through a rating range table (RRT), and the digital broadcasting receiver (b) of the user side transmits the digital broadcasting data. Receive. PSIP information is provided to ATSC, which is a domestic digital broadcasting method, and PSIP includes MGT, TVCT, STT, RRT, EIT, ETT, etc., where RRT is a table defining rating information of a program.

The digital broadcast receiver (b) tunes the digital broadcast data of the corresponding channel according to the user's channel selection, demodulates the received digital broadcast data through the demodulator 232, and then decodes the video data through the demux 234. And demuxing the audio data and the private data 236 (S304).

Subsequently, the digital broadcast receiver b decodes the video data and the audio data into the video signal and the audio signal through the digital decoder 238 (S306).

The demuxed private data 236 includes PSIP information including channel information, EPG information, a rating range table (RRT), a content notification descriptor (CAD), and the like.

Accordingly, the digital broadcast receiver (b) decodes the PSIP information from the private data 236 and displays the parental level limit value set by the user and the parental level setting value on the RRT included in the broadcast data as shown in FIG. 4. (S308).

Here, the content notification descriptor (CAD) provides restriction information of each program being broadcasted, extracts the dimention information through the "rating_dimension" to inform what the rating restriction item is defined in the RRT, and extracts the rating information from the "rating_value". Tells you what the value of the item is. That is, the content notification descriptor (CAD) informs that the limit value is "0" in the "KBS News" EIT, and finds "0" in the RRT to know that it is available for all ages.

On the other hand, the items constituting the rating range table (RRT) is, as shown in (a) of FIG. It includes a dimension name (dimension_name_text), a viewing grade number (value_defind), etc. for the corresponding dimension.

FIG. 5B illustrates some examples of a grade range table (RRT), which is a US broadcast classification based on the Motion Picture Association America (MPAA) classification standard. Here, since "dimension_index" is 7, it is the 7th classification method, and since "values_defind" is 9, it represents 9 steps from 0 to 8. Also, "grade = 0" indicates that the degree of restriction is sorted in descending order.

In this process, if it is not yet determined whether to limit the viewing (S310), the digital broadcast receiver (b) outputs a low pass video obtained by mosaicing the screen through the low pass filter (S312).

However, when the parental level is determined by comparing the parental level set by the user with the parental level set by the program, the digital broadcast receiver b may not display the video signal of the parental level by the content notification descriptor CAD. Output it (S314). That is, the mosaic video signal is output while decoding the parental level restriction information, so that the user does not watch a program of an undesired grade but only a program of a desired grade.

As described above, according to the present invention, after changing a channel in a digital broadcast, a mosaic image is provided until a time point for comparing the rating restriction information provided by the program with the restriction information set by the receiver to view a program that the user does not want. It is possible to realize a screen display limited digital broadcast receiver and method using a parental control program.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, by providing a mosaic image while receiving digital broadcast data and decrypting the parental level restriction information, the user does not watch an image of an undesired parental level, and thus the convenience is increased. The effect is greatly improved.

Claims (4)

A receiver which tunes to a specific broadcast channel according to channel selection of a user and receives a digital broadcast signal; A demodulator for demodulating the received digital broadcast signal; A demux for parsing the demodulated digital broadcast signal into video, audio, and private data; A digital decoder for converting parsed video and audio data into analog video signals and analog audio signals; And And a low pass filter configured to low pass filter the video signal to output a mosaiced video signal. The method of claim 1, When the parental level set by the user is compared with the parental level set by the program included in the digital broadcast signal, and the parental level is not determined, the low-pass filter outputs a mosaic-passed low-pass video on the screen. Screen display restriction digital broadcast receiver using a parental control program, characterized in that. Demodulating the digital broadcast signal received according to channel selection and parsing it into video, audio, and private data; A second step of determining whether to restrict the viewing by comparing the parental level setting value set by the user with the parental level setting value included in the digital broadcasting signal based on the private data; And And if the viewing restriction is not determined, outputting a low-pass video mosaiced on the screen through a low-pass filter. . The method of claim 3, wherein When the parental control is determined, the parental control program of the digital broadcasting receiver, which outputs a video signal of which the parental level is limited by a contents advisory descriptor and a rating region table (RRT). How to limit the screen display using.

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