KR19990016089A - Program Search Method for Satellite Broadcasting System - Google Patents

Abstract

The present invention relates to a program searching method of a satellite broadcasting receiving system which enables a satellite broadcasting receiving system to quickly search for a broadcasting time and a broadcasting channel for a specific program using keywords of the corresponding program. A first step of demodulating and storing program information for each channel inserted into the received satellite broadcast signal and displaying a broadcast channel signal tuned from the satellite broadcast signal on a monitor according to a user's selection; If a program search key signal according to a key operation is input while the broadcast channel signal is being displayed, a second step of displaying a program search menu screen in OSD form on the monitor; and a keyword for the program to be searched by the key operation is displayed. If input, the stored program information for each channel is checked. A third step of detecting a title of a program including the keyword, and if a program including the keyword is detected, displaying an information menu screen of the detected program in an OSD form of a predetermined format, and displaying the key. A fourth step of displaying a guide message of a predetermined form in an OSD form when a program including a word is not detected; and turning off the displayed OSD screen when an off key signal of the displayed menu screen or guide message is generated. It includes five steps.

Description

Program Search Method for Satellite Broadcasting System

The present invention relates to a satellite broadcasting receiving system, and more particularly, to a program searching method of a satellite broadcasting receiving system suitable for a user searching for information of a specific program using a keyword of a corresponding program.

As is well known, satellite broadcasting is capable of receiving broadcast signals from ground stations (broadcasting earth stations) using broadcast satellites in a stationary orbit about 36,000 kilometers above the equator, and receiving them directly from the satellite receiving antennas in each home. The broadcasting system is a broadcasting system in which the selection range of information is greatly expanded compared to the conventional terrestrial or cable broadcasting system.

The satellite broadcast receiver used for such a satellite broadcast receives a bitstream provided from a satellite, processes a broadcast signal of a selected channel, and then provides it to a display device (for example, a TV).

In this case, the bit stream provided from the satellite includes various information such as broadcast signals (video data and audio data), event information table (EIT), and time data table (TDT) for each channel.

Among the various pieces of information, when the viewer selects a menu corresponding to 'program guide' from the main menu of the PGM, the satellite program guide screen is displayed.

On the other hand, in the general satellite broadcast receiver to display the above-described program guide screen, as shown in Figure 4, the horizontal axis (10:30, 11:00, 11:30, ....) of the satellite broadcast guide program is time (Typically 48 hours), and the vertical axis (KBC, MBS, SBC, ...) of the satellite broadcasting guide program indicates the classification of each broadcasting station.

The user can receive a program guide for each channel by moving a cursor on the screen through a selection key provided in the key input means to scroll the program for each channel and time zone on the screen. have.

However, the conventional satellite broadcast guide program according to the conventional method is a vertical side, that is, the broadcasting station is divided into dozens of countries including each broadcasting station, a cable broadcasting station, a private broadcasting station, etc., and the horizontal side of the satellite broadcasting guide program, i. Since the display is sequentially performed for 48 hours to 2 weeks, there is a problem in that it takes a long time to select a desired satellite broadcasting program because the viewer cannot see at a glance within one screen of the satellite broadcasting guide program.

Accordingly, the present invention has been made in view of the above-mentioned point, and the object of the present invention is to provide a search method of a satellite broadcasting guide program that can display a satellite broadcasting program desired by a user by searching for a satellite broadcasting guide program by keywords. have.

In order to achieve the above object, the present invention, when the power of the satellite broadcast receiver is turned on (ON), demodulated and stored program information for each channel inserted into the received satellite broadcast signal, the satellite broadcast according to the user's selection A first step of displaying a broadcast channel signal tuned from a signal on a monitor; when a program search key signal is input according to a key operation during display of the tuned broadcast channel signal, a program search menu screen is displayed on the monitor in OSD form. A second step of displaying, when a keyword for the program to be searched is input by the key manipulation, a third step of extracting program information for each channel to detect a title of a program including the key word; When a program containing a word is detected, a predetermined information menu screen for the detected program is displayed. In the OSD form of the display, if the program containing the keyword is not detected, a fourth step of displaying a guide message of a predetermined form in the OSD form, when the off-key signal of the displayed menu screen or guide message occurs, And a fifth step of turning off the displayed OSD screen.

1 is a block diagram of a satellite broadcasting receiving system suitable for applying a program guide method of a satellite broadcasting receiving system according to an embodiment of the present invention;

2 is a flowchart illustrating a program guiding process of a satellite broadcasting receiving system according to an embodiment of the present invention;

3 is a diagram illustrating an example of a program guide method of a satellite broadcasting reception system according to an embodiment of the present invention;

4 is a diagram illustrating a satellite broadcast guide program according to a conventional exemplary method.

＊ Explanation of symbols on main parts of drawing

10: key input unit 20: tuner and demodulation unit

30: micom 40: MPEG decoder

50: signal processing section 60: memory section

70: OSD unit

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings.

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

1 is a block diagram of a satellite broadcasting receiver suitable for performing a search method of a satellite broadcasting guide program according to the present invention, and includes a key input unit 10, a tuner and a demodulator 20, a microcomputer 30, and an MPEG decoder 40. ), A signal processing unit 50, a memory unit 60, and an OSD unit 70.

The key input unit 10 is composed of key metrics on the remote control or its own panel to generate a corresponding key signal by the user's operation and provide it to the microcomputer 30. For example, 'a', 'b', 'c', ...) is configured, and the microcomputer 30 controls to perform a function corresponding to the key signal from the key input unit 10 A signal is generated, and in particular, a control signal for OSD processing is generated by searching for a satellite broadcasting guide program based on a keyword inputted by a user.

Then, the tuner and demodulator 20 tunes the bitstream of the channel corresponding to the tuning control signal of the microcomputer 30 in the bitstream from the satellite received through the antenna (not shown), and then demodulates it again to decode the MPEG decoder. 40, the OSD unit 70 configures various menu screens related to satellite broadcasting as shown in FIG. 3A based on the control signal of the microcomputer 70, and provides the same to the MPEG decoder 40. As shown in the figure, a program search menu is separately configured.

The MPEG decoder 40 separates and decodes a broadcast signal provided from the tuner and the demodulator 20 into an audio signal, a video signal, and various program information, and then provides the decoded signal to the signal processor 50. From the OSD unit 70, Data about various information provided is also provided to the signal processor 50 after a predetermined signal processing process.

The signal processing unit 50 converts the digital video signal in units of frames provided after being decoded from the MPEG decoder 40 into an NTSC or PAL signal and displays it on a monitor (not shown), and the digital audio signal decoded from the MPEG decoder 40. Is converted into an analog signal and output to a speaker not shown.

On the other hand, the memory unit 60 stores various program information decoded and output from the above-described MPEG decoder 40 under the control of the microcomputer 30, and again outputs the stored program information under the control of the microcomputer 30. Done.

2 is a flowchart illustrating a program guiding process of a satellite broadcasting receiving system according to a preferred embodiment of the present invention, which will be described with reference to the accompanying drawings.

When the power is turned on in the satellite broadcasting reception system configured as shown in FIG. 1 (step 201), program information for each channel of the satellite signals received through the satellite antenna, not shown, is stored in the memory unit 60 by the microcomputer 30. Is stored in step 203.

Then, the microcomputer 30 generates a tuning control signal based on the key signal for channel selection from the key input unit 10, whereby the bitstream of the selected channel among the bitstreams provided from the satellite is tuner and demodulator. Tuned through (20) and displayed on the monitor after a predetermined signal processing process (step 205).

If the viewer generates a corresponding key signal through the key input unit 105 to display the satellite broadcasting menu screen while viewing the satellite broadcasting program, the main menu screen as shown in FIG. 3a is displayed. In this case, when the user selects a 'program search' menu for searching for a specific program (step 207), a menu screen for inputting a keyword as shown in FIG. 3B is displayed (step 209).

When the viewer inputs each key (eg, 'ㅅ', 'ㅏ', 'ㄹ', 'ㅏ', 'ㅇ') corresponding to a word to be searched through the key input unit 10 ( Step 211), as shown in FIG. 3B, a corresponding character is displayed, and the microcomputer 30 has a satellite having a program title including a keyword input by a user from program guide information stored in the memory unit 30. Search for a broadcast program begins (step 213).

If the broadcast program including the keyword input by the user is not searched through the above-described step 213, after displaying the corresponding guidance message (for example, 'no broadcast program is applicable') (step 217). The program search menu screen as described above is turned off (step 223).

If the broadcast program including the keyword input by the user in the above-described step 213 is detected from the memory unit 60, the OSD unit 70 is driven by the control of the microcomputer 30, and FIG. Likewise, the channels, titles, broadcast times, etc. of the program corresponding to the keyword are arranged and displayed in a predetermined form (step 219).

Meanwhile, as described above, when a menu screen off key signal is input through the key input unit 10 or a menu screen is displayed in a state in which information on a broadcast program corresponding to a keyword input by the user is displayed, a predetermined time is set. When the elapsed time passes (step 221), the operation of the OSD unit 70 is blocked by the control of the microcomputer 30, so that the displayed menu screen is turned off (step 223).

As a result, the microcomputer 30 searches for and displays a broadcast program including a keyword input by the user through the key input unit 10 from the program information stored in the memory unit 60. You can easily set the scheduled recording and scheduled viewing of the program.

As described above, according to the present invention, in digital satellite broadcasting with a large number of channels and a large amount of programs, a user can easily find a desired broadcast program using a program search menu, and thus provide convenience for using a product. It can be effective.

Claims (3)

A search method for a program of a satellite broadcasting receiving system for receiving a satellite broadcasting signal provided from a satellite, When the power is turned on, demodulating and storing program information for each channel inserted into the received satellite broadcast signal, and displaying a broadcast channel signal tuned from the satellite broadcast signal on a monitor according to a user's selection. Stage 1; A second step of displaying a program search menu screen in OSD form on the monitor when a program search key signal corresponding to a key operation is input while displaying the tuned broadcast channel signal; A third step of detecting a title of a program including the keyword by extracting program information for each channel when the keyword for the program to be searched is input by the key operation; If a program including the keyword is detected, an information menu screen for the detected program is displayed in an OSD form of a predetermined format. If a program containing the keyword is not detected, a guide message of a predetermined form is displayed in an OSD form. Displaying a fourth step; And a fifth step of turning off the displayed OSD screen when an off key signal of the displayed menu screen or guide message is generated. The method of claim 1, wherein the information menu screen for the detected program comprises a broadcast time and title of the detected program, and a broadcast channel. The method of claim 1, wherein the fifth step further comprises turning off the displayed menu screen or guide message when a predetermined time is reached.