KR20000040034A - Method for displaying auxiliary channel information using extended data service in broadcasting receiver - Google Patents

Abstract

PURPOSE: A method for displaying auxiliary channel information using extended data service in a broadcasting receiver is provided to display auxiliary channel data received by second tuner on the screen. CONSTITUTION: A method for displaying auxiliary channel information using extended data service in a broadcasting receiver includes first thru forth steps. At the first step(a), a broadcasting channel is tuned by first tuner and displayed on a screen, and information including XDS(extended data service) is displayed. At the second step(b), whether another channel information display mode is selected during watching one channel is determined. At the third step(c), other broadcasting channels except for the channel on screen are continuously selected and corresponding XDS data is detected. At the forth step(d), the XDS data detected in the third step(c) is displayed on the screen.

Description

Display method of non-viewing channel information using X-DS data in broadcasting receiver

The present invention relates to a method for displaying non-viewing channel information using XDS data in a broadcast receiving apparatus. More particularly, the present invention provides XDS data of another channel through a second tuner while watching a broadcast channel through a first tuner. The present invention relates to a method for displaying non-viewing channel information using XDS data in a broadcast receiving apparatus capable of displaying channel information on a viewing broadcast screen.

In general, the received broadcast signal includes the actual video signal on the composite video signal starting from the approximately 50th Suffolk scan line, starting with the vertical sync signal (Vsync), and the horizontal sync signal on the first horizontal scan line (OH). During the vertical blanking interval (VBI) from the video to the video, a specific character broadcast signal is loaded, not the video signal. In particular, the caption is displayed on the 21st line of the horizontal synchronous signal within the vertical time return time VIB, and the XDS data is carried out between the captions.

That is, as shown in FIG. 1, the XDS data structure has a synchronization pulse for timing captions and XDS data during the 1H section in the 21st line with the horizontal synchronization signal Hsync as the head. Parity for error correction for the start bit area indicating the start of data, the 7-bit control data area indicating the caption and XDS data areas, the type of information provided, and the like. Area, caption and 7-bit data area where XDS data is actually present, and a parity area for error correction for the data area are sequentially listed. In this case, the control data area represents more than 10% (hex) of the caption area, and represents between 0 to F% (hex) of the XDS data area.

This structure, XDS data, provides functions such as channel related services, program related services, and other services. In this case, the channel-related service indicates a network name, a local letter, a local channel number, and a tape delay between a central broadcast and a local broadcast. Program-related services may include program name, program type (e.g. news, sports, movies, ...), program rating, voice related information (e.g. language, multiple voices) , ...), program total time, program time in show, program description, and so on.

On the other hand, the apparatus for receiving a broadcast signal carrying the XDS data as shown in Fig. 2 is a key input unit 10 for function selection including broadcast channel selection, and the set signal input from the key input unit 10; And a tuner 30 for tuning the broadcast channel received from the RF input terminal or the antenna according to the control signal of the microcomputer 20, and the tuner 30. The video IC 40 performs signal processing on the video signal and XDS data of the tuned broadcast channel, and the display 50 displays information on the video signal and XDS data processed by the video IC 40 on the screen. .

On the other hand, look at the operation of the broadcast receiving device having such a configuration as follows.

First, when a user sets a specific broadcast channel through the key input unit 10, the setting signal is input to the microcomputer 20. This microcomputer 20 applies a control signal based on the input signal to the tuner 30. Then, the tuner 30 receives a corresponding broadcast channel from an RF input terminal or an antenna and applies the detected video signal to the video IC 40 after performing a high frequency amplification and detection by a tuning operation. Accordingly, the video IC 40 processes the input broadcast signal through a video signal and, if there is an XDS signal other than the input broadcast signal, also processes the signal and outputs the same through the display 50.

That is, when the broadcasting channel signal is received with the XDS data other than the video signal, the information of the XDS data signaled through the video IC 40 is displayed on the screen being viewed.

However, the conventional broadcast receiving apparatus for receiving the XDS data receives a broadcast channel tuned from one tuner or RF input terminal, so that the information according to the XDS data added to the received broadcast channel can be displayed and recognized on the screen. At the same time, however, other broadcast channels cannot be received and the corresponding XDS data of other broadcasts cannot be checked on the screen. That is, when a user wants to receive XDS data added to another broadcast channel while receiving one broadcast channel, the user has to select a channel to receive. Therefore, while viewing a desired broadcast, it is impossible to check information on another channel on the screen. There was a troublesome operation according to the viewing to solve.

Accordingly, the present invention has been invented to solve the above-mentioned problems, and while watching a broadcast channel through the first tuner, the broadcast screen receiving XDS data of another channel through the second tuner and viewing channel information accordingly. It is an object of the present invention to provide a method of displaying non-viewing channel information using XDS data in a broadcast receiving apparatus capable of displaying the same.

The present invention for achieving the above object comprises the steps of: (a) tuning a broadcast channel to be watched with a first tuner to view a broadcast screen and displaying information including XDS data of the channel; (B) determining whether another channel information display mode is set while watching one broadcast channel through the first tuner in this step (a); (C) detecting the corresponding XDS data by continuously tuning other broadcasting channels except for the channel being watched through the second tuner since the other channel information display mode is set as a result of the step (b); And (d) displaying the XDS data detected in step (c) on the screen being viewed.

1 is a diagram for explaining the structure of general XDS data.

2 is a view for explaining a conventional XDS data display operation.

3 is a block diagram illustrating an operation of displaying non-viewing channel information according to the present invention;

4 is a flowchart illustrating a method for displaying non-viewing channel information using XDS data according to the present invention.

<Description of the code | symbol about the principal part of drawing>

100: information display setting unit 200: key input unit

300: microcomputer 400: first tuner

500: second tuner 600: video IC

700: display

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

As shown in FIG. 3, the broadcast receiving apparatus applied to the display method of the present invention includes a key input unit 200 for selecting a function including broadcast channel selection and an information display setting unit 100 for setting another channel information display mode. And a microcomputer 300 for performing overall control according to other channel XDS data detection, display operation and channel reception according to the setting signal input from the information display setting unit 100, and a control signal of the microcomputer 300. The first tuner 400 for tuning the broadcast channel to be received from the RF input terminal or the antenna according to the second, and the second for continuously tuning a plurality of channels other than the broadcast channel being watched according to the control signal of the microcomputer 300 A video IC 600 for processing image signals of the tuner 500 and the broadcast signal input from the first tuner 400 and detecting XDS data of multiple broadcast channels received from the second tuner 2; Displaying the video signal output from video IC (600) onto a screen, and comprises a display 700 for displaying the detection XDS data information onto the screen.

On the other hand, the non-viewing channel information display method using the XDS data according to the present invention having such a configuration is as follows.

As shown in Fig. 4, the initial state S1 proceeds to the first tuner tuning step S2, and tunes through the broadcast channel first tuner input by the user and proceeds to the broadcast channel viewing step S3. Then, in this broadcasting channel viewing step (S3), the set broadcasting channel is displayed on the screen and the XDS data information received through the current channel on the screen, and the flow proceeds to the other channel information display determination step (S4). As a result of the determination in the other channel information display determination step (S4), if it is determined that the other channel information display mode is set while watching a certain broadcast channel, the process proceeds to the second tuner station control step (S5).

That is, when the user sets a specific broadcast channel through the key input unit 200, the setting signal is input to the microcomputer 300. Accordingly, the microcomputer 300 applies a control signal based on the input signal to the tuner 30. Then, the first tuner 400 receives a corresponding broadcast channel from an RF input terminal or an antenna and applies the detected video signal to the video IC 600 after performing a high frequency amplification and detection by a tuning operation. Accordingly, the video IC 600 processes the input broadcast signal through a video signal and, if there is an XDS signal other than the input broadcast signal, also processes the signal and outputs the same through the display 700.

On the other hand, in the second tuner control step (S5), a plurality of broadcast channels other than the channel being watched through the second tuner are alternately selected, and the process proceeds to the XDS data detection step (S6). In this XDS data detection step (S6), the XDS data added to each broadcasting channel is detected in the set order, and the flow proceeds to the channel information display step (S7). In the channel information display step S7, the channel information detected in each channel is displayed on the viewing screen, and the information display release determination step S8 is performed. If it is determined that the mode for releasing the display of other channel information is set in the viewing broadcast screen, the process proceeds to the broadcasting channel viewing step S3 and repeats the loop. If it is determined that the mode for releasing the display of other channel information is not set in the broadcasting screen being viewed, the flow proceeds to the channel information display step S7 to display information of other channels continuously received.

That is, when the user sets the other channel information display mode through the information display setting unit 100 while watching the broadcast screen received through the first tuner 400, the corresponding setting signal is input to the microcomputer 300. Then, the microcomputer 300 applies a predetermined control signal to the second tuner 500, so that the second tuner 500 sequentially tunes a plurality of broadcast channels and stores the XDS data included in the tuned channels. To the video IC 600. In this case, the video IC 600 processes the video signal of the broadcast channel tuned from the first tuner 400 and simultaneously processes the XDS data of the broadcast channel received from the second tuner 500. Therefore, the output signal of the video IC 600 together with the image signal of the first tuner 400 and the other channel information from the second tuner 500 to the display 700 together. Accordingly, as the user selects the first MBC channel, XDS data information according to other broadcast channels KBS1, KBS2, and SBS along with the broadcast program received from the channel is displayed on the screen.

On the other hand, as described above, the information according to the XDS data detected through the second tuner 500 is preferably varied so that the same information received in each broadcast channel is displayed on the display.

As described above, according to the present invention, when the first tuner and the other broadcast channels tuned to the user selected broadcast channel are tuned and the corresponding XDS data is detected from the second tuner, the present invention can be used when viewing one broadcast channel on the screen. The broadcast channel information is displayed. Therefore, the user can easily grasp the state of the broadcasting channel to view the information of several channels at a time, and then can easily operate according to channel selection.

Claims (1)

Tuning a broadcast channel to be watched with a first tuner to view a broadcast screen and displaying information including XDS data of the channel; (B) determining whether another channel information display mode is set while watching one broadcast channel through the first tuner in this step (a); (C) detecting the corresponding XDS data by continuously tuning other broadcasting channels except for the channel being watched through the second tuner since the other channel information display mode is set as a result of the step (b); And (d) displaying the XDS data detected in the step (c) on the screen being watched.