KR20000028156A - Childlock channel display method for television - Google Patents

Abstract

PURPOSE: A child lock channel display method for a television is to easily check television channels that are restricted to children just by simple key operations. CONSTITUTION: A function to display all the child lock channels on a TV screen is used on a TV having a child lock channel mode wherein every adult-oriented channel is automatically skipped when scanning channels. Each current channel to be restricted is set in a child lock mode by the key operation of a user, and the setting is then stored in the selection channel information based on an automatic channel selection function. By using the selection channel information when scrolling through the channel, any restricted channel is skipped and coupled into a next restricted channel which is set and stored in the selection channel information. Using simple key operations of a control device when checking the restricted channels, the selected channel information is searched and only the channels set in the child lock mode are selected and displayed on an OSD(On Screen Display).

Description

Method for displaying child locked channel for protecting from erotic content in a television

The present invention relates to a method of displaying a locked channel on a television, and in particular, in order to restrict viewing of an adult broadcast program on a television, a locked channel is automatically searched and displayed on an OSD screen so that the viewer can easily identify the current locked channel. A method of displaying locked channels in televisions.

In general, as shown in FIG. 1, a television tuner unit 50 extracts only a frequency band of a channel selected by a user by tuning a radio frequency signal received through an antenna ANT from airwaves, and an input local part. An IF detector 60 for detecting an intermediate frequency from a frequency band signal of a channel tuned through the tuner unit 50 according to the oscillation signal, and an image intermediate frequency signal (i) in the signal output from the IF detector 60. P / S separator 70 for separating PIF) and SIF, and voice signal S from voice intermediate frequency signal SIF output from the P / S separator 70. An audio detector 80, an image detector 110 for separating the image signal P from the image intermediate frequency signal PIF output from the P / S separation unit 80, and the voice detector 80) and the audio signal S output from the external device 150 are selected according to the input control signal. A predetermined signal according to a selected signal input from the audio processor 90 demodulating and outputting to the outside through the speaker 100 and the image signal P output from the image detector 110 and the external device 150. After selecting, the image processor 120 separates the luminance signal and the color signal, extracts each color band from the color signal, demodulates it, and transmits the demodulated signal to the CRT driver. The image processor 120 transmits a signal corresponding to the input operation control signal. OSD (On Screen Display) 130 for outputting the information on the CRT (140) screen to overlap the screen, and various operation modes (tuning, volume control, screen control, external device mode switching of the TV) Etc.), a remote controller 20 for remotely controlling various operation modes of the television, and a remote controller for receiving a signal output from the remote controller 20 and outputting a signal accordingly. It includes a key signal input unit 30, the key panel 10 or the microcomputer 40 for controlling the configuration unit controls the overall operations of the TV according to a signal outputted from the remote control key signal input part (30).

Looking at the operation of the television in more detail as follows.

When the user selects a channel on which a quiz program or a voice multiplex program is broadcast using the key panel 10 or the remote controller 20, the microcomputer 40 tunes the tuning voltage corresponding to the channel on which the quiz program is broadcast. ) To tune to the channel where the quiz program or the voice multi-program is broadcast.

As described above, the quiz program broadcast channel tuned by the tuner unit 50 detects an intermediate frequency from the broadcast signal while passing through the IF detector 60, and passes through the P / S separation unit 70. (SIF) and the image intermediate frequency signal (PIF) are separated.

The voice intermediate frequency signal SIF output from the P / S separation unit 70 passes through the voice detector 80 and the voice signal S is detected, and the voice processor 90 undergoes a predetermined process. The image intermediate frequency signal PIF output through the speaker 100 and output from the P / S separation unit 70 passes through the image detector 34 to detect the image signal P, thereby performing the image processing unit 120. ) Is output to the CRT 140 through a predetermined process.

On the other hand, even when a viewer operates an external device 150, for example, a video cassette recorder, to reproduce the video and audio signals recorded on the video cassette tape, the viewer can view the CRT 140 and the speaker 100 through the above-described operation. Through the video and audio signals to be reproduced can be viewed.

On the other hand, these TVs are diversified in function to meet the needs of viewers, and various functions are added to satisfy the various needs of these viewers.

For example, the text mode, on the other hand, is a mode for receiving teletext, which refers to an information service for displaying text pages and images mainly composed of text information on a television monitor screen. . That is, information such as domestic and foreign news, economic industry, sports, tourism and leisure, cultural arts, life / science / women, broadcasting, and stocks are part of the TV broadcasting signal, that is, digitally encoded and inserted into the vertical return period of the video signal. Or a coded telephone signal, which is transmitted by a telephone line. The character decoder included in the television extracts the desired information from a normal television broadcast signal or from the telephone line to accumulate necessary information pages for display on a monitor. It is called teletext in the UK, video text in Germany, NHK in Japan, and antiope in France.

On the other hand, in a broadcasting system providing an extended data service (EDS), for example, KBPS (Korea Broadcasting Program System) is a data for broadcasting programs and scheduled recording on a broadcast signal, for example, a channel, a broadcast category (for example, , News, drama, sports, etc.), various program information such as broadcast start / end time and standard time data are converted into digital signals and inserted into any horizontal line during the vertical blanking interval (VBI) This signal is decoded by the KBPS decoder on the video receiving device side to perform broadcast program reservation recording function and automatic time correction function.

In addition, as a broadcasting system for providing such an EDS, there are, for example, a VPS (Video Programming System) in the UK and a European region, and a Program Delivery Control (PDC) in the UK. For example, various broadcast information data are loaded on an arbitrary horizontal line in the vertical blanking period and transmitted.

On the other hand, there are some sensational or violent broadcasting programs that limit the viewing of young children or adolescents in television broadcasting, and there is a problem that children and adolescents watch these adult-only broadcasting programs indiscriminately and cause emotional harm. Conventionally, a child lock function is added to a television so that only a user who knows the password can drive and use the television.

On the other hand, such a lock mode may be set for each channel instead of the entire television so that children or teenagers can freely watch the general channel except the adult channel which is switched to the lock mode when the parent or adult is not at home. do.

In order to set the lock mode for each channel, the adult broadcast code is used to check the adult broadcast code among the above-described VPS / PDC data, and the user sets the lock mode for each channel. When performing the up / down, the channel set in the lock mode is automatically skipped, and the channel set in the lock mode is forgotten.

However, in the channel-specific lock mode described above, the viewer cannot identify a channel that is currently set to the lock mode. Therefore, in order to check the channel set to the lock mode, after performing channel up / down, all channels are searched. However, there is an inconvenient problem of checking whether the channel is switched to the lock mode. In this case, the user has to remember all channels tuned at the time of automatic channel selection to determine whether the channel is skipped.

In addition, by using the channel auto tuning function, you can check the channels that have been switched to the lock mode at one time, that is, check all channels that can be tuned. However, if there is a channel set to the lock mode, the channel auto tuning function cannot be performed. The mode cannot be released by the channel auto tuning function.

Therefore, when using the automatic channel selection function, it is very inconvenient to check which channel is currently switched to the lock mode.

Accordingly, the present invention seeks to find a way for a user to simply check a locked channel by searching for all currently locked channels and displaying them on an OSD screen.

The present invention has been made to solve the above-mentioned conventional problems, the purpose of which is to set the current lock mode when the lock mode for each channel in order to prevent children or teenagers indiscriminately watching the adult broadcast The present invention provides a method for displaying a locked channel in a television such that all channels that are already in the list can be searched and a list of locked channels can be displayed.

1 is a block diagram showing a conventional television.

2 is a block diagram of a television employed in accordance with the present invention.

3 is a flow chart illustrating a lock channel display process in a television according to a preferred embodiment of the present invention.

<Description of reference numerals for the main parts of the drawings>

10 key panel 20 remote control

30: remote control key signal input unit 40: microcomputer

50: tuner 60: IF detector

70: P / S separation unit 80: voice detector

90: voice processing unit 100: speaker

110: image detector 120: image processor

130: OSD unit 140: CRT

150: external device 160: VPS / PDC detection unit

In the television according to the present invention, a method for restricting viewing of an adult broadcast is provided in a television having a lock mode for each channel in which a channel for broadcasting an adult broadcast program is set to a lock mode for each channel so that the lock channel is skipped when the channel is up / down. If the current channel is set to the lock mode based on the user's key operation, storing the current channel is set to the lock mode together with the tuned channel information according to the automatic channel tuning function. By skipping the channel set to the lock mode by using the channel information and tuning to the next channel tuned and stored, and if there is a key input for confirming the lock channel, the channel information is searched to extract only the channel set to the lock mode. And displaying the channel list through the OSD function. The.

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

2 is a schematic block diagram of a television employed in accordance with the present invention, the configuration of which further includes a VPS / PDC detection unit 160 in a conventional television.

As shown in the figure, a television adopted according to the present invention includes a predetermined horizontal line section within a vertical blanking period of a broadcast signal output from the image detector 110 and the external device 150 by an input operation control signal. After separating the luminance signal and the color signal from the VPS / PDC detection unit 160 for detecting the VPS / PDC data inserted in the image signal P, and the image signal passing through the image detector 110, each color band in the color signal Extract the image, demodulate it, and transmit the same to the CRT 140, a key panel 10 and a remote controller 20 for selecting various operation modes, and a signal output from the remote controller 20; The remote control key signal input unit 30 for outputting the signal and the overall control of the television on the basis of the key signal from the key panel 10 or the remote control key signal input unit 30, the tuner unit 50 during automatic channel selection ) If there is a synchronization signal detected and applied by the image processing unit 120 by sequentially tuning from the lowest channel to the highest channel, the broadcast program detected by the VPS / PDC detection unit 160 in the internal memory (not shown) is determined as a channel to which broadcasting is performed. It is stored as the channel information tuned together with the information (for example, channel, broadcasting station name, broadcasting method, etc.), and when the channel-specific lock mode is set, indicating that the channel is set to the lock mode in the tuned channel information, and stored When the lock channel is checked, the microcomputer 40 controls the OSD unit 130 to display a list of all channels set to the lock mode by displaying the selected channel information and controlling the display to a predetermined OSD text screen from the image processor 120. Character screen display for synthesizing the OSD text signal corresponding to the control of the microcomputer 40 to the applied video signal and outputting it to the CRT 140 And a means of OSD (On Screen Display) unit 130.

Next, a lock channel display process in a television according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying flowchart of FIG.

First, the microcomputer 40 determines whether a key signal for powering on the television is applied through the key panel 10 or the remote controller key signal input unit 30 (step 300).

In this case, when a key signal for power-on is applied through the key panel 10 or the remote controller key signal input unit 30, the microcomputer 40 switches the standby mode from the standby mode to the active mode (step 302).

Next, the microcomputer 40 determines whether a key signal for automatic channel tuning is applied (step 304), and when the key signal for automatic channel tuning is applied, the microcomputer 40 controls the tuner unit 50 to perform all broadcasts. It is determined whether a synchronization signal is detected and applied from the image processing unit 120 to search for all channels on which broadcasting is performed, and perform automatic channel tuning to store information on the found channel in a memory not shown (step). 306).

In more detail, in detail, the UK or Europe tuning method uses VS (Voltage Synchronizing) method, and in this tuning method, the band switching voltage corresponding to the band (VHF LOW, VHF HIGH, UHF) is changed while the reference is made. By increasing the tuning voltage from the tuning voltage by a predetermined step, channel tuning is performed while gradually storing the tuning voltage and the band switching voltage of the channel where the broadcast signal is detected sequentially in the corresponding serial number, thus tuning the channel number. Is a sequential sequential serial number that is not a unique channel number assigned to a broadcasting station, so channel information including broadcasting frequency, broadcasting channel, broadcasting station name, etc., is included in the VPS / PDC data in order to make it easier for a user to distinguish a channel. And transmit it, detect and store it, and then the user It is possible to distinguish.

On the other hand, when the above-described automatic channel tuning process is completed, it is possible to set the lock mode for each channel, by operating a predetermined key provided in the user's remote controller 20 (step 308), the lock mode can be set for each channel. It is possible to set the lock mode for each channel automatically by using the presence or absence of an adult broadcast code among the VPS / PDC data detected by the VPS / PDC detection unit 16 or set by the user watching a broadcast program directly. (Step 310). At this time, the channel information set for the lock mode is displayed and stored in the channel information selected for the lock mode.

As described above, when the predetermined channels are set to the lock mode, the channel set to the lock mode is skipped when the channel is up / down, and a user may not easily identify the channel currently set to the lock mode.

However, in the present invention, the lock channel can be confirmed by a predetermined key operation provided in the remote controller 20. Therefore, the microcomputer 40 determines whether a predetermined key signal for checking the lock channel is applied from the remote control key signal input unit 30. It is determined (step 312).

At this time, when a predetermined key signal for checking the lock channel is applied, the microcomputer 40 searches for channels set to the lock mode among the tuned channel information stored in the memory (not shown) and displays the searched channel list in the OSD unit. 130 is displayed to display a predetermined OSD text screen (step 314).

Then, the user can simply check all the channels currently set to the lock mode.

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, in order to prevent children or adolescents from watching adult broadcast programs indiscriminately, a lock mode is set for each channel that provides an adult broadcast program so that children or adolescents access these adult broadcast channels. There is an effect that can provide a convenience that can be checked by a simple key operation to the list of channels currently set to the lock mode in the TV can be blocked.

Claims (1)

In a television having a channel-by-channel lock mode in which an adult broadcast program is broadcasted on a channel-by-channel basis, the lock channel is skipped when the channel is up / down. If the current channel is set to the lock mode based on a user's key operation, storing the current channel as the lock mode in the channel information tuned according to the automatic channel tuning function; Skipping a channel set to a lock mode using the tuned channel information when the channel is up / down and tuning to a next tuned and stored channel; If there is a key input for confirming the lock channel, searching for the tuned channel information, extracting only the channel set to the lock mode, and displaying the channel list through an OSD function; .