KR100314465B1 - Method for controlling display of broadcasting additional imformation - Google Patents

Abstract

The method for controlling broadcast additional information display according to the present invention includes: (a) reading channel data and outputting tuning data according to a channel switching key input; and (b) TXT of a corresponding channel from tuning data after step (a). Determining whether there is a signal and determining whether there is additional broadcast information in the presence of a TXT signal, and (c) updating and storing the additional broadcast information in the memory unit after decoding the additional broadcast information when there is the additional broadcast information, and (d) After the step (c), the additional information of the corresponding channel is read, and then displayed on the OSD screen for a predetermined time.

In this case, if there is no TXT signal or no additional broadcast information, the method may further include displaying the stored channel additional information after reading from the memory.

According to the present invention, by decoding and storing various broadcast additional information signals at the time of automatic program start or channel switching, it is inconvenient for the user to check the broadcasting station name from time to time when local broadcasts are broadcasted at the same frequency by time zone. To eliminate the need for more accurate broadcasting and railing capabilities.

Description

Method for controlling display of broadcasting additional imformation}

In particular, the method for controlling broadcast additional information display according to the present invention enables to refresh and display information on a corresponding station when a specific frequency is broadcasted by different broadcast stations according to time slots and to display on the screen. It relates to a control method.

In general, a broadcasting station carries broadcasting additional information, that is, broadcasting station name, program information, time information, and the like on a channel frequency, so that the broadcasting station name of the viewer can be recognized through the screen.

In the conventional automatic program broadcasting station labeling (Laveling) method,

(a) calculating a channel frequency by performing AFT (Auto Fine Tuning) operation when starting an automatic program and receiving PLL (Phase Locked Loop) data from the found broadcast signal;

(b) detecting a channel name for each defined frequency by determining what the system of the voice source is for the channel frequency found by the tuning operation;

(c) determining the presence or absence of a teletext (TXT) signal at the channel frequency in step (b), storing the TXT signal in a memory if there is a TXT signal, and analyzing the broadcast station name data if there is no TXT signal;

(d) In step (c), if there is broadcasting station name data, station labeling is performed and storage thereof is performed.

2 is a flowchart illustrating a conventional method of displaying broadcast additional information during channel switching, comprising: (a) reading channel data and performing AFT tuning on a corresponding channel frequency;

(B) after performing the AFT tuning, displaying a station name and displaying a preset channel;

(C) After displaying the channel, the process proceeds to displaying the channel.

Hereinafter, a method of displaying broadcast additional information during channel switching will be described with reference to the accompanying drawings.

First, referring to FIG. 1, when the automatic program starts, the station labeling is performed by selecting an intermediate frequency (IF) from the RF inputted to the tuner through a space or a wire from the broadcast station and performing an AFT operation. Then, the broadcast signal is found, and PLL data corresponding to the found broadcast signal is supplied to the microcomputer to calculate the broadcast frequency (S11, S12, and S13).

The system of the sound source for the broadcast frequency found by the above tuning operation is determined using the voice data applied from the voice processor (S14). The reason is to be able to find out the channel name for each frequency defined for each voice system (i.e., to find the name for each frequency channel defined by the apparatus such as CCIR and ORIT). For example, in a particular country, the 05 channel of B / G sound is 175.25 MHz, and the 05 channel of D / K sound is 93.25 MHz (S15).

In the case where there is no broadcasting station labeling function, only step S14 described above is performed, and the automatic program operation is terminated. However, the TXT signal is required for the labeling of the broadcasting station name, and the broadcasting station name can be detected only when the additional broadcasting information (PDC / VPS code) included in the TXT signal is included (S16 and S17).

That is, if the TXT signal is discriminated in the broadcast signal tuned by the above operation and there is no TXT signal, or if there is no additional broadcast information (PDC / VPS code), the tuned information is stored in the state (frequency, channel). .

If the TXT information is included in the tuned broadcast, the text information processing unit analyzes the additional broadcasting information (PDC or VPS code) and transmits it to the microcomputer, and analyzes the data information to find the broadcasting station name information and perform broadcasting station labeling. (S18, S19).

In this way, the station name is stored in a memory (eg, EEPROM) (S20). Through such a path, the automatic search for the next channel is continued and the broadcast frequency and the station name are stored for each channel.

On the other hand, referring to Figure 2, when the channel switching signal is input after the automatic channel search (S21), the microcomputer reads the corresponding channel data stored in the memory and performs the AFT operation on the stored channel frequency (tuner) ( S22), the station name and channel name of the channel tuned to the screen are read and displayed (S23, S24), and the corresponding channel is displayed simultaneously (S25).

However, when auto programming, ACMS-α (auto search function, station laveling function, program edit function) is updated. However, when switching channels, only the information already stored in memory is displayed. There is no refresh of information.

In this way, when the channel is not refreshed, the broadcast information is not refreshed. When local broadcasts in some regions use the same frequency to broadcast each time zone, incorrect broadcast information may be displayed.

As an example, local broadcasts in the French region transmit broadcasts in the morning / afternoon, midnight / weekly, etc. In this case, the wrong broadcast information may be displayed.

Due to this problem, there is an inconvenience in that the user may receive the correct information only when the user executes the automatic channel again or the user directly corrects the broadcasting station name.

The present invention has been made to solve the above problems, by decoding and storing a variety of broadcast additional information signal at the time of automatic program start or channel switching, and when the local broadcasts broadcast by the time zone at the same frequency, the user from time to time Eliminate the inconvenience of checking the station name and provide a more accurate station railing function.

In addition, by automatically executing the station label function, which was automatically performed only during the automatic program, even during channel switching, when the broadcast information is changed by time zone, if the broadcast is received by station labeling through the automatic program or channel switching by the user's manual operation, It is an object of the present invention to provide a method for controlling broadcast additional information display that detects and displays changed broadcast information automatically without inputting a broadcast station name.

1 is a flow chart for showing a broadcasting station labeling function in a conventional automatic program.

2 is a flow chart illustrating a conventional method for controlling broadcast additional information display.

3 is a block diagram of an apparatus for controlling broadcast additional information display according to the present invention;

4 is a flowchart showing an embodiment of a method for controlling broadcast additional information display according to the present invention;

5 is a diagram illustrating a memory map before and after a channel by the method for controlling broadcast additional information display according to the present invention;

<Description of the symbols for the main parts of the drawings>

10 ... MICOM 20 ... Tuner section (TUNER (IF processing section))

30 ... video signal processor 40 ... text information processor

50 ... Memory 60 ... OSD Processing Unit

70 ... screen display

Broadcast additional information display control method according to the present invention for achieving the above object,

(a) reading channel data and outputting tuning data according to channel switching key input;

(b) determining whether there is a TXT signal of a corresponding channel from the tuning data after step (a), and if there is a TXT signal, determining whether there is additional broadcast information;

(c) decoding and additionally storing the additional broadcasting information in the memory unit when the additional broadcasting information is present;

(d) After the step (c), the additional information of the corresponding channel is read and then displayed on the OSD screen for a predetermined time.

Here, if there is no TXT signal or no additional broadcast information, the pre-stored channel additional information is read.

Hereinafter, with reference to the accompanying drawings as follows. 3 is a block diagram of a broadcast additional information display control apparatus employed in the present invention, FIG. 4 is a flowchart showing an embodiment of a broadcast additional information display control method, and FIG. 5 is a broadcast additional information display control according to the present invention. A diagram illustrating a memory map before and after a channel by a method.

First, referring to FIG. 3, a microcomputer 10 for controlling channel channel selection and channel information according to the presence or absence of a TXT signal of a channel frequency, and increasing the channel frequency by the RF channel channel selection signal of the microcomputer 10 A tuner 20 for outputting channel information of the frequency IF and an image signal processor for outputting the channel information of the tuner 20 to the screen display 70 and outputting the channel data to the microcomputer. 30, a text information processor 40 for detecting TXT information from the video signal processor 30, and outputting the TXT presence information to a microcomputer, and a memory 50 for storing broadcast additional information by the microcomputer. And an OSD processing unit 60 which displays an OSD through a screen processing unit after OSD processing by the OSD control signal.

The method for controlling broadcast additional information display according to the present invention configured as described above is as follows.

First, when the channel switching key signal is input from the user (S31), the microcomputer 10 receives the read information of the channel stored in the memory 50 (S32), and then tuner unit for switching to the corresponding channel In step S33, the tuner 20 tunes the corresponding channel according to the channel switching signal, transfers the channel data to the microcomputer 10, and simultaneously transmits the received channel information to the video signal processor (S33). 30).

The image processor 30 determines whether the channel information is present and outputs the result to the microcomputer 10 according to the result. The microcomputer 10 determines whether the channel information exists and if there is channel information, the image signal processor 30. Output channel data to The image signal processing unit 30 performs image processing on the screen display unit 70 by using the channel data of the microcomputer 10 and outputs the text information to the character information processing unit 40.

The character information processing unit 40 detects the input text information and outputs the presence or absence of the information to the microcomputer 10, and the microcomputer 10 stores the text information in the memory 10 when there is text information (S34). , S35, S36).

That is, if there is text information, the microcomputer 10 determines whether there is additional broadcasting information (VPS / PDC code) (S34, S35), and as a result, if there is additional broadcasting information, the additional broadcasting information of the corresponding channel is stored in the memory 50. Update and store (S36).

In addition, the additional broadcasting information of the specific channel is updated at the same time, the additional information of the channel is read from the memory 10 (S37), and then the OSD display control is performed through the OSD processing unit 60 (S38). Channel additional information is displayed on the OSD screen for a predetermined time (t) (S38, S39).

Then, when the OSD display time (t) is finished (S40, S40-1), the OSD erase command is output to the OSD processing unit 60 to erase the OSD (S41).

On the other hand, if there is no text information and additional broadcasting information, the microcomputer 10 performs step S38 of reading channel additional information stored in the memory 50, and then outputs an OSD screen display control signal to the OSD processing unit 60 to display the screen. Displayed on the display unit 70.

As shown in the additional broadcast information stored in the memory map before and after channel switching, each channel (KBS1, KBS2, MBC, before channel switching as shown in FIG. 5A) and after channel switching as shown in FIG. SBS) broadcast information is updated and stored in the order of MBC, KBS2, KBS1, SBS.

Therefore, by continuously updating the broadcast additional information at every channel switching, the user can automatically display it after the broadcasting station name is changed and then display it. By automatically updating the name of the broadcasting station, it is possible to provide accurate broadcasting information to the consumer, and the user can easily grasp the contents displayed on the screen even when the program information is changed.

In addition, the present invention provides a more advanced ACMS-α function by performing a broadcasting station labeling function even when switching channels, unlike performing an ACMS-α function only in an existing automatic program.

As described above, according to the present invention, even when local broadcasts are divided by time zones at the same frequency, the broadcasting unit continuously updates the information by only switching channels, thereby updating the name of the broadcasting station and additional information thereof. In addition to providing a more accurate broadcast schedule to the program, even if the program information is changed to the contents displayed on the screen can easily grasp the changes of the broadcasting station.

In addition, the present invention has an effect of providing a more advanced ACMS-α function by performing the broadcasting station labeling function even when switching channels, unlike performing the ACMS-α function only in the existing automatic program.

Claims (2)

(a) reading channel data and outputting tuning data according to channel switching key input; (b) determining whether there is a TXT signal of a corresponding channel from the tuning data after step (a), and if there is a TXT signal, determining whether there is additional broadcast information; (c) decoding and additionally storing the additional broadcasting information in the memory unit when the additional broadcasting information is present; and (d) after the step (c), reads additional information of the corresponding channel and displays the OSD on the OSD screen for a predetermined time. The method of claim 1, And if the TXT signal is absent or there is no additional broadcast information, displaying previously stored channel additional information from a memory and displaying the stored channel additional information.