KR19990027026A - How to restrict viewing on TV - Google Patents

Abstract

The present invention relates to a method of restricting viewing on a television, which enables a selective viewing of a channel on which a broadcast program, which cannot be viewed by a teenager, is broadcasted through a text broadcast. Storing a channel in which a predetermined character string indicating a rating is detected, and displaying a password for inputting a password if the channel selected when switching a channel based on a user's key operation is a channel in which a predetermined character character is detected, and the selected channel is If the predetermined character string is not detected, switching to the selected channel; if the input password matches the preset password, switches to the selected channel; if the input password does not match the preset password, a warning screen is displayed. Separately, including not displaying and switching to the selected channel. (Korea Broadcasting Program System) KBPS, which will be easily applied as a general teletext decoder, etc., without having to provide a convenience that allows a user to selectively restrict viewing.

Description

How to restrict viewing on TV

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for restricting viewing on television, and in particular, to restrict viewing by selecting a channel on which a broadcast program for which adolescents cannot watch is broadcasted, when viewing a television including cable broadcasting. It is about a method.

In general, in a broadcasting system providing an extended data service (EDS), for example, the KBPS (Korea Broadcasting Program System) is a digital display of data for broadcast programs and scheduled recording, data representing standard time data, and viewing ratings on a broadcast signal. By converting it into a signal and inserting it into any one line during the vertical blanking interval (VBI), the signal is demodulated by a KBPS decoder on the video receiving device side to perform functions such as broadcast program reservation recording function. Could carry out.

Therefore, in the television equipped with the above-described EDS and equipped with the KBPS decoder, it was possible to restrict the viewing on the television by using the data representing the viewing grade among the above-mentioned data.

However, it is difficult to perform viewing restriction in a general television that does not have such a KBPS decoder. Therefore, in the present invention, a broadcast program is started from character or graphic information inserted in the form of a digital signal in a vertical blanking period for general character broadcasting. Disclosed is a method for performing viewing restriction by detecting a predetermined character string for displaying that the program is an adult-only program at the start of a cable broadcasting program.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for restricting viewing on a television, which enables a television to restrict viewing of an indiscriminate adult-only broadcast program by using general text broadcasting.

According to an aspect of the present invention, there is provided a method for restricting viewing on a television by using text broadcasting, comprising: scanning a channel and storing a channel in which a predetermined character string indicating a rating is detected; Displaying a screen for inputting a password if the selected channel is a channel for which a predetermined character string is detected at the time of channel switching based on the operation, and switching the selected channel to the selected channel if the predetermined character string is not a channel for which the predetermined character character is detected; And switching to the selected channel if the number matches the preset password, displaying a warning screen if the input password does not match the preset password, and not switching to the selected channel.

1 is a schematic block diagram of a television according to a preferred embodiment of the present invention.

2 is a flowchart illustrating a parental control process in a television according to a preferred embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

10: key input unit 20: microcomputer

30: tuner unit 40: video signal processing unit

50: amplifier 60: monitor

70: character decoder unit 80: OSD unit

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

1 is a schematic block diagram of a television according to a preferred embodiment of the present invention, including a key input unit 10, a microcomputer 20, a tuner unit 30, an image signal processing unit 40, an amplifier unit 50, The monitor 60, the character decoder unit 70 and the OSD unit 80 is included.

In this configuration, the key input unit 10 includes a plurality of keys including channel up / down keys, numeric keys, etc. for performing the operation of the television, and outputs a key signal corresponding to the user's key operation. By using a remote control that can be input from a remote location, and detects the key signal carried on the infrared carrier wave from the remote control to output to the microcomputer 20 to be described later.

The microcomputer 20 outputs a tuning signal for tuning in a channel corresponding to a channel up / down key signal or a numeric key signal from the key input unit 10, and the tuner 30 and the character decoder unit (to be described later) ( 70) by scanning each channel to store and control a channel in which a predetermined character string indicating a rating is detected, and selectively output the password input screen by checking whether the selected channel is a channel in which a predetermined character character is detected when switching channels. And selectively controls switching to a selected channel and outputting a warning screen in response to whether an authorized password matches a preset password.

Meanwhile, the tuner unit 30 outputs a broadcast signal received by being tuned to a channel corresponding to the tuning signal from the microcomputer 20.

In addition, the video signal processor 40 separates and outputs a video signal from a broadcast signal from the tuner 30, and processes the separated video signal into a displayable signal.

Meanwhile, the amplifier 50 synthesizes the displayable video signal from the image signal processor 40 and the applied character signal, amplifies the output signal, and outputs the result to the monitor 60.

The character decoder 70 extracts and stores character string data inserted into a predetermined region of the vertical blanking period of the separated image signal from the image signal processor 40, and controls the microcomputer 20 based on the control of the microcomputer 20. Output the saved string data.

On the other hand, the OSD (On Screen Display) unit 80 is a means for displaying a character at a predetermined position on the screen, due to the control of the microcomputer 20 to read and output the character signal.

Next, a description will be given in detail with reference to the flowchart of FIG. 2, which attaches a parental control process in a television according to a preferred embodiment of the present invention including the above-described component.

First, the microcomputer 20 controls the tuner unit 30 and the character decoder unit 70 to scan each channel to store a channel where a predetermined character string indicating a rating is detected (step 200).

In this case, the user may designate and scan channels using the numeric keys of the key input unit 10 except for channels that do not need a rating such as a children's channel or an education channel without scanning all cable broadcasting channels. Since the cable broadcasting channel starts by displaying by using a text broadcast that the broadcast with a viewer rating at about every hour or every 30 minutes on the cable broadcasting channel, the channels are scanned for a certain time at about the hour or about 30 minutes every hour. It is possible to detect a predetermined character string indicating a rating.

Next, the microcomputer 20 determines whether the user switches the channel. The channel up / down key signal is applied from the key input unit 10 due to the channel up / down key operation of the key input unit 10, In order to change the channel, it is determined whether the channel switch is applied based on whether a numeric key signal due to the numeric key manipulation of the key input unit 10 is applied (step 202).

At this time, if there is no channel change, the process proceeds to step 200. If there is a channel change, that is, a channel up / down key signal is applied from the key input unit 10 to switch back and forth the channel stored in channel selection, or directly or directly. When a numeric key signal corresponding to is applied, it is compared whether a channel to be switched or a selected channel is a channel in which a predetermined character string indicating a rating is detected in step 200 (step 204).

In this case, if the channel to be changed is a channel having a viewing grade, the viewer controls the OSD unit 80 to display a predetermined password input screen for notifying the viewer that the broadcast program has a viewing restriction and for inputting a password (step 206).

Next, the microcomputer 20 determines whether the input password based on the numeric key signal applied from the key input unit 10 and the preset password match (step 208).

At this time, if the password does not match, the display screen for a predetermined time warns the warning that the password does not match (step 210), and proceeds back to step 202 described above to reselect the channel or continue the current channel. Make it available for viewing.

On the other hand, if the password matches in step 208 described above, the tuner 30 outputs a tuning signal corresponding to the corresponding channel to switch channels (step 212), and ends.

In addition, if the channel to be changed in the above-described step 204 is a channel having no rating, the process proceeds to the above-described step 212, and switches to the corresponding channel and ends.

On the other hand, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit of the present invention.

As described above, according to the present invention, it is possible to provide a user with the convenience of selectively limiting viewing by simply applying to general text broadcasting without having a separate KBPS decoder or the like.

Claims (3)

As a method of restricting viewing on television using text broadcasting, Scanning each channel to store a channel where a predetermined character string indicating a rating is detected; Displaying a screen for inputting a password if the selected channel is a channel for detecting a predetermined character string when switching a channel based on a user's key operation, and if the selected channel is not a channel for detecting a predetermined character character string, switching to the selected channel; Switching to the selected channel if the entered password matches the preset password, displaying a warning screen if the entered password does not match the preset password, and not switching to the selected channel. Limitation method. The method of claim 1, wherein when scanning each channel, only a channel designated by a user is scanned. The method of claim 1 or 2, wherein the channel is scanned for a predetermined time at about the hour or 30 minutes every hour when scanning each channel.