KR19990033461A - How to Display Program Guide Screen of Satellite Broadcast Receiver - Google Patents

Abstract

The present invention provides a program guide screen using information on a program for each channel pre-stored in a satellite broadcast receiver capable of receiving a satellite broadcast signal provided from a satellite and displaying a predetermined image corresponding to the received broadcast signal on a monitor. A method for displaying the information, comprising: a first step of reading program information for each channel pre-stored in the satellite broadcast receiver when a guide key signal for a broadcast program for each channel of the satellite broadcast receiver is applied; A second step of forming a program guide screen corresponding to the information read in the first step; Synthesizing a screen corresponding to the satellite broadcast signal and the program guide screen; By providing a method for displaying a program guide screen of the satellite broadcast receiver, comprising the fourth step of displaying the screen synthesized in the third step, it is possible to provide a variety of additional functions to the user of the satellite broadcast receiver. In addition, the ease of use of the satellite broadcasting receiver can be enhanced.

Description

How to Display Program Guide Screen of Satellite Broadcast Receiver

The present invention relates to a satellite broadcasting receiver, and more particularly, to a method for displaying a program guide screen of a satellite broadcast receiver for displaying a program guide screen provided by a satellite broadcast receiver to a user.

As is well known, satellite broadcasting is a method of providing broadcast signals to a wider area using satellites (communication satellites) located at an altitude of about tens to hundreds of kilometer on the earth's surface, maximizing channel utilization, video and sound. Due to various advantages such as improvement of signal quality, additional digital service, ease of data transmission, and improvement of user interface, its use has recently increased rapidly.

In such a satellite broadcast, the transmission signal of the digital broadcast signal received from the satellite body to the satellite broadcast receiver through a fixed channel is restored to the transport stream through a process such as conversion to an intermediate frequency, demodulation and error correction, The transport stream includes various information such as broadcast signals (video data and audio data) for each channel, an event information table (EIT), a time data table (TDT), and the like.

Therefore, a general satellite broadcast receiver is provided with various menu screens for displaying such various information. Among such menu screens, a broadcast program guide screen for guiding a broadcast program for each channel is included.

FIG. 1 is an exemplary view showing an example of a broadcast program guide screen of a general satellite broadcast receiver. As shown in FIG. 1, a broadcast program guide screen provided by a satellite broadcast receiver generally has a horizontal axis (10:30, 11 :). 00, 11:30, ....) is time, the vertical axis is configured for each channel, it is configured to display information about the broadcast program of each channel by time zone.

Therefore, the user can move the cursor on the screen through the manipulation of the selection key provided in the key input unit to scroll the program for each channel and time zone on the screen, thereby receiving guidance of the program for each channel. Can be.

However, since the program guide screen provided by the conventional satellite broadcast receiver is displayed through the entire screen, there is a problem in that broadcast viewing must be stopped in order to refer to the program guide screen.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a broadcast screen and a program guide screen simultaneously so that a program guide screen can be referred to while watching a broadcast. The present invention provides a method for displaying a program guide screen.

In order to achieve the above object, the present invention relates to a program for each channel pre-stored in a satellite broadcast receiver capable of receiving a satellite broadcast signal provided from a satellite and displaying a predetermined image corresponding to the received broadcast signal on a monitor. A method for displaying a program guide screen using information, comprising: a first method of reading program information for each channel previously stored in the satellite broadcast receiver when a guide key signal for a broadcast program for each channel of the satellite broadcast receiver is applied; step; A second step of forming a program guide screen corresponding to the information read in the first step; Synthesizing a screen corresponding to the satellite broadcast signal and the program guide screen; And a fourth step of displaying the screen synthesized in the third step.

1 is an exemplary diagram illustrating an example of a program guide screen provided by a general satellite broadcasting receiver;

2 is a block diagram showing a satellite broadcasting system for implementing a method for displaying a program guide screen of a satellite broadcasting receiver according to the present invention;

3 is a detailed flowchart illustrating a method for displaying a program guide screen of a satellite broadcasting receiver according to the present invention;

4 is an exemplary diagram illustrating an example of a program guide screen provided by a satellite broadcast receiver according to the present invention;

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

100: key input unit 200: system control unit

300: OSD processing unit 400: Storage unit

500: tuner and demodulator 600: MPEG decoder

700: video signal processing unit 800: image synthesis unit

900 display 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.

2 is a block diagram of a satellite broadcast receiving system for implementing a method for displaying a guide screen of a program of a satellite broadcast receiver according to the present invention; a key input unit 100, a system control unit 200, an OSD processing unit 300, and storage A unit 400, a tuner and a demodulator 500, an MPEG decoder 600, a video signal processing unit 700, an image synthesizer 800, and a display unit 900. Is as follows.

First, the key input unit 100 is composed of key metrics on a remote controller or its own panel including a plurality of function keys such as a program guide key and a channel selection key, and generates a key signal corresponding to a key operated by a user. Provided to the system control unit 200.

The system control unit 200 includes a micro processor for controlling the overall operation of the satellite broadcasting receiver. When the channel selection key signal is applied from the key input unit 100, the system control unit 200 generates a corresponding tuning control signal to generate a tuner and It is provided to the demodulator 500, and receives the program guide data provided from the tuner and the demodulator 500 and sequentially stored in a predetermined area of the storage unit 400. In this case, the program guide data includes channel information packet data and program information packet data. The channel information packet includes a program combination table including N bits of program identifier (PID) information representing a program number of each channel. The program information packet, including a PAT (Program Association Table), includes a program map table composed of N-bit program identifier (PID) information representing audio, video, text, etc. of a measurement channel.

When the program guide key signal is applied from the key input unit 100, the system controller 200 extracts channel information packet data and program information packet data previously stored in a predetermined area of the storage unit 400, and then displays the OSD processing unit 300. On the other hand, after generating the OSD control signal to configure the broadcast program guide screen by OSD processing the above-described data, and provides it to the OSD processing unit (300).

The OSD processing unit 300 OSD-processes the channel information packet data and the program information packet data provided from the system control unit 200 according to the OSD control signal generated by the system control unit 200 to generate broadcast program guide screen data. After that, the generated broadcast program guide screen data is converted into an NTSC or PAL analog signal, and the converted analog signal is provided to the image synthesizing unit 800.

The tuner and demodulator 500 extracts program guide data, ie, channel information packet data and program information packet data, inserted on a transport stream received through an antenna when the satellite satellite receiver is powered on. Then, the extracted packet data is restored to a bit stream through a process of converting to an intermediate frequency (IF), demodulation, and error correction, and then provided to the system controller 200. In this case, the channel information packet data and the program information packet data provided to the system controller 200 are selected from a transport stream received through an antenna (not shown) when a predetermined channel selection key signal is applied from the key input unit 100. It is used to tune a specific channel, and when a program guide key signal is applied from the key input unit 100, it is used as actual content information of a broadcast program guide screen.

Also, the tuner and demodulator 500 tunes a channel selected by a user in a transport stream received through an antenna based on a tuning control signal generated by the system control unit 200, and in the transport stream of the tuned channel. After extracting the program service data, the extracted data is restored to a bit stream through a process such as conversion to an intermediate frequency (IF), demodulation, and error correction, and then provided to the MPEG decoder 600. In this case, the program service data includes video packet data, audio packet data, and the like, and may be compressed and encoded based on the MPEG-2 standard.

The MPEG decoder 600 restores the compressed coded video packet data and the audio packet data of the selected channel provided from the tuner and the demodulator 500 to the original signal before encoding, and then the restored video signal is a video signal processor 700. ), And the restored audio signal is provided to an audio signal processor (not shown). In this case, techniques such as variable length decoding, inverse DCT, inverse quantization, and motion compensation may be used to reconstruct the compressed coded video signal and the audio signal to the original signal before encoding.

The video signal processor 700 converts the digital video signal of the selected channel provided by the MPEG decoder 600 into an NTSC or PAL analog video signal and provides the converted video signal to the image synthesizer 800.

The image synthesizing unit 800 may provide a video signal provided from the video signal processing unit 700 to the display unit 900 or may be provided from the video signal processing unit 700 under the control of the system control unit 200. The broadcast program guide screen provided from the OSD processor 300 is synthesized with the video signal, and data about the synthesized screen is provided to the display 900.

The display unit 900 includes a monitor or the like and displays a predetermined screen corresponding to a signal provided from the image synthesizing unit 800.

The program guide method of the satellite broadcast receiver according to the present invention is implemented in a satellite broadcast receiver including the constituent members performing the above-described functions, which is attached to the process of implementing the present invention in the above-described satellite broadcast receiver. It will be described in detail with reference to.

3 is a detailed flowchart illustrating a method of displaying a broadcast program guide screen of a satellite broadcast receiver according to the present invention.

Referring to FIG. 3, a user is watching satellite broadcasting in a state in which program guide packet data, that is, channel information data and program guide information data for each channel are pre-stored in the storage unit 400 (S 10), and a key input unit. In step 100, it is checked whether a program guide key signal is applied.

In this case, the program guide packet data pre-stored in the storage unit 400 may be text information consisting of characters, or may be shape information consisting of figures and pictures (images that may mean a corresponding program).

When the program guide key signal is applied from the key input unit 100 as a result of the check in step S20, the system controller 200 withdraws the program guide packet data previously stored in the storage unit 400 (S30), and the extracted The data is provided to the OSD controller 300, and an OSD control signal is generated and provided to the OSD processor 300 so as to generate data for the program guide screen using the provided data.

The OSD processing unit 300 OSD-processes the program guide packet data provided by the system control unit 200 based on an OSD control signal generated from the system control unit 200 to generate broadcast program guide screen data. Thereafter, the generated broadcast program guide screen data is converted into an NTSC or PAL analog signal, and the converted analog signal is provided to the image synthesizing unit 800.

On the other hand, during the steps S10 to S40, the program service data corresponding to the channel tuned in the transport stream received through the antenna is extracted by the tuner and the demodulator 500 to extract the extracted data into an intermediate frequency (IF). ) Is restored to the bit stream through the process of conversion, demodulation and error correction, and the restored bit stream is restored to video data, audio data, etc. before encoding in the MPEG decoder 600, and the restored video data is again The video signal processor 700 converts the NTSC or PAL analog video signal to the video synthesizer 800.

Therefore, after the data about the program guide screen formed by the OSD processor 300 and the analog video signal provided by the video signal processor 700 are synthesized by the image synthesizer 800, the display 900 (S 50)

In this case, the screen synthesis is performed by dividing the entire screen from side to side or up and down, and then synthesizing the program guide screen by placing the video corresponding to the broadcast signal on either side and the program guide screen on the other side. It may be located at a predetermined position desired by the user.

The composite screen provided by the image synthesizing unit 800 will be displayed on a monitor (not shown) provided in the display unit 900. At this time, the screen shown on the monitor will be displayed in the form as shown in Figure 4. (S60) That is, the broadcast signal corresponding to the channel selected by the user on the top or bottom of the monitor will be displayed as a predetermined image, the rest The screen will be a program guide screen.

As described above, according to the present invention, it is possible to provide a more convenient function to the user by simultaneously displaying the video and the program guide screen corresponding to the broadcast signal on one screen, the user's satisfaction in using the satellite broadcast receiver There is an effect that can promote.

Claims (4)

Displaying a program guide screen by using information about programs stored in each channel in a satellite broadcast receiver capable of receiving a satellite broadcast signal provided from a satellite and displaying a predetermined image corresponding to the received broadcast signal on a monitor. As a method for A first step of reading program information for each channel pre-stored in the satellite broadcast receiver when a guide key signal for a broadcast program for each channel of the satellite broadcast receiver is applied; A second step of forming a program guide screen corresponding to the information read in the first step; Synthesizing a screen corresponding to the satellite broadcast signal and the program guide screen; And a fourth step of displaying the screen synthesized in the third step. The method of claim 1, wherein the program guide screen of the second step is formed as an OSD screen. The program guide screen of the satellite broadcast receiver according to claim 1, wherein the screen synthesis in the third step comprises combining the screen corresponding to the satellite broadcast signal and the program guide screen by dividing the screen to the left and right of the entire screen. Way. The program guide screen display of claim 1, wherein the screen synthesis in the third step comprises dividing the screen corresponding to the satellite broadcast signal and the program guide screen by dividing the screen up and down on the entire screen. Way.