KR19990056476A - Guide screen control method of satellite broadcasting receiver - Google Patents

Abstract

The present invention relates to a method for controlling a guide screen of a satellite broadcast receiver which can improve the speed of moving the guide screen without a cumbersome key manipulation process by moving the program guide screen for each channel by one screen unit. The present invention checks the input of the screen moving mode key signal for moving the guide screen by one screen while the program guide screen for each channel is displayed, and displays the displayed program guide without inputting the screen moving mode key signal. When a key signal for scrolling the screen is input, the program information of the time or channel corresponding to the key signal is extracted from the stored program information for each channel, and the displayed program guide screen is changed by one hour or one channel unit. To display the screen movement mode If a key signal is input, extracting program information corresponding to the time or channel corresponding to the key signal from the stored program information for each channel in units of one screen, and changing and displaying the guide screen in units of one screen. do.

Description

Guide screen control method of satellite broadcasting receiver

The present invention relates to a satellite broadcast receiver, and more particularly, to a method for controlling a program guide screen of a satellite broadcast receiver suitable for moving a program guide screen displayed by a satellite broadcast receiver by one screen.

In recent years, the broadcast method using satellites, which is rapidly expanding in use, is a method of providing a broadcast signal to a wider area by using a satellite (communication satellite) located at an altitude of about tens to hundreds of kilos on the surface of the earth. In this satellite broadcasting system, for example, an old band RF signal having a frequency band of 11.7 GHz to 12.0 GHz is used.

To this end, the antenna for satellite broadcasting reception is provided with a low noise blockdown converter for converting a radio frequency (RF) signal of a very high frequency into an intermediate frequency (IF) signal, which is a high frequency RF signal. Is converted into an IF (intermediate frequency) signal in the hundreds to thousands of MHz bands (for example, 950 MHz to 2050 MHz) that can be received by a satellite broadcasting receiver (receiver).

Therefore, in the satellite broadcasting tuner provided in the satellite broadcasting receiver (receiver), the IF signal received through the low noise converter is inputted to tune the channel selected by the user. The satellite broadcasting receiver maximizes channel utilization, image and sound. Along with the improvement of signal quality and the ease of transmitting additional digital service data, the significant improvement of the user interface is a big advantage.

Meanwhile, in satellite broadcasting, a transmission signal of a digital broadcasting signal received from a satellite through a fixed channel to a satellite broadcasting receiver is restored to a transport stream through a process of converting to an intermediate frequency, demodulating, and correcting an error. The 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.

Then, the program guide information stored in the memory area is used to tune a specific channel selected in a transport stream received through a satellite channel when a specific channel is selected by the user, and also by the user. When the provision of broadcast program information of the channel (i.e., display) is requested, it is composed of a menu screen and displayed on the monitor.

FIG. 4 is a diagram illustrating an example of a program guide screen provided by a conventional satellite broadcasting receiver, and a user inputs a corresponding key signal to refer to program information for each channel while watching a satellite broadcasting. When the program guide screen for each channel is called, the program guide screen as shown in the drawing is displayed on the screen.

In addition, the user may scroll the guide screen displayed by manipulating the key input unit left, right, or up and down to refer to broadcast program information of a specific time zone or a specific channel desired by the user.

However, in the conventional program guide screen, when a user inputs a left and right key signal for screen scrolling to search for a broadcast program of a specific time zone desired by the user, the program guide screen displayed on the screen is displayed on the input scroll key. Since scrolling is performed by one column or hour, the overall scrolling speed is very inconvenient, and the user has to inconvenience the cumbersome key manipulation process several times.

That is, as shown in the drawing, when the user wants to refer to the program information broadcasted at 18:00 with the program information displayed from 9:00 to 11:00, the cumbersome key manipulation process must be repeated. .

In addition, when the user wants to search for broadcast program information about the remaining channels that are not displayed on the screen, the overall scrolling speed is very slow because the user scrolls by one channel unit based on the input up / down scroll keys as described above. There is an inconvenience, and accordingly there is an inconvenience that the user must repeatedly perform a cumbersome key operation process.

Accordingly, the present invention has been made in view of the above-mentioned point, and in the state where the program guide screen for each channel of the satellite broadcast is displayed, the user can move the program guide screen by one screen using the screen shift key. Its purpose is to provide a program guide screen control method.

In order to achieve the above object, the present invention provides a method for controlling a program guide screen of a satellite broadcast receiver for receiving a satellite broadcast signal provided through a satellite, pre-store broadcast program information for each channel extracted from the broadcast signal, and displaying the same. The method comprising: a first step of reading a program information for each channel and displaying a program guide screen when a key signal for displaying information about a program for each channel is input; A second step of checking input of a screen moving mode key signal for moving the displayed program guide screen by one screen; When the screen movement mode key signal is not input and a key signal for scrolling the displayed program guide screen is input, the program information of a time or channel corresponding to the key signal is extracted from the stored program information for each channel. A third step of changing and displaying the displayed program guide screen by an hour or one channel unit; A fourth step of setting the displayed guide screen to a screen moving mode when the screen moving mode key signal is input; When a key signal for scrolling the displayed program guide screen is input while the guide screen is set to the screen moving mode, a program corresponding to the time or channel corresponding to the key signal from the stored program information for each channel. A fifth step of extracting information in units of one screen; A method of controlling a program guide screen of a satellite broadcasting receiver includes a sixth step of changing and displaying the displayed program guide screen by one screen unit based on the extracted program information.

1 is a block diagram of a satellite broadcast receiver suitable for applying a method for controlling a guide screen of a satellite broadcast receiver according to an embodiment of the present invention;

2 is a diagram illustrating an example of a method for controlling a program guide screen of a satellite broadcasting receiver according to an embodiment of the present invention;

3 is a flowchart illustrating a process of controlling a program guide screen of a satellite broadcasting receiver according to an embodiment of the present invention;

4 is a diagram illustrating an example of a program guide screen provided by a conventional satellite broadcasting receiver.

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

110: key input unit 120: microcomputer

130 tuner and demodulator 140 memory unit

150: MPEG Decoder 160: Video Encoder

170: OSD unit 180: image synthesizing 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 applying a method for controlling a program guide screen of a satellite broadcasting receiver according to an exemplary embodiment of the present invention, and includes a key input unit 110, a microcomputer 120, a tuner, and a demodulator ( 130, a memory unit 140, an MPEG decoder 150, a video encoder 160, an OSD unit 170, and an image synthesizer 180.

Referring to the figure, the key input unit 110 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 120, in particular, the displayed program guide screen And a screen moving mode key and a direction key for moving the screen one by one (by one page).

The microcomputer 120 generates various control signals for performing a corresponding function based on the key signal from the key input unit 110. For example, the microcomputer 120 may include a microprocessor for controlling overall operation of the satellite broadcasting receiver. When the user broadcast channel selection signal is input from the outside, a corresponding tuning control signal is generated and provided to the tuner and demodulator 130 to be described later.

In addition, when the scroll key signal and the screen moving key signal are input through the key input unit 110 while the program guide screen for each channel is displayed, the microcomputer 120 displays the displayed guide screen by one column or one column. It is moved by screen unit.

The tuner and demodulator 130 tunes a broadcast channel selected by a user in a broadcast signal received through a broadcast signal receiver (ie, a satellite reception antenna), not shown, based on a tuning control signal provided from the microcomputer 120. The tuned broadcast channel signal is restored to a transport stream through a process of converting to an intermediate frequency, demodulation, and error correction, and the restored transport stream is provided to the MPEG decoder 150 of the next stage.

In addition, the tuner and demodulator 130 demodulates program information for each channel included in the bit stream provided from the satellite when the satellite broadcast receiver is turned on, and then provides the information to the microcomputer 120. Program information for each channel transmitted is stored in a predetermined area of the memory unit 140.

On the other hand, in the MPEG decoder 150, on the basis of the control signal provided from the microcomputer 120, the compressed and encoded audio and video signals of the broadcast channel provided from the tuner and demodulator 130, In consideration of spatiotemporal and spatial correlation, the compressed and encoded video signal is restored to the original signal before encoding by using a decoding technique such as variable length decoding, inverse DCT, inverse quantization, and motion compensation, and the restored digital broadcast video signal The next stage is provided to the video encoder 160, the reconstructed audio signal is provided to an audio signal processor not shown.

In addition, the video encoder 160 converts the selected digital broadcast video signal provided by the MPEG decoder 150 into an NTSC or PAL analog video signal and then provides the image synthesizer 180 to the image synthesizer 180. The OSD unit 170 The program information of each channel provided from the microcomputer 120 is configured as an OSD screen of a predetermined type and displayed on the screen through the image synthesizing unit 180 to be described later.

Accordingly, the image synthesizing unit 180 transfers the analog satellite broadcasting signal output from the video encoder 160 to a display side, not shown, or omits a screen in which various menu screen data displayed through the OSD unit 170 are mixed. To the display side.

3 is a flowchart illustrating a process of controlling a program guide screen of a satellite broadcasting receiver according to a preferred embodiment of the present invention, which will be described in detail with reference to the accompanying drawings.

During the normal viewing mode in which the operation of the satellite broadcasting receiver configured as described above displays a broadcast signal for a specific channel through a predetermined signal processing process (step 301), program information for each channel is input through the key input unit 110. When a key signal for display is input (step 303), the microcomputer 120 reads program information for each channel previously stored in the memory unit 140 and provides the OSD unit 170 when the receiver is powered on. The program guide screen for each channel as shown in FIG. 4 is displayed (step 305).

In addition, the user scrolls the displayed guide screen left, right, or up and down by operating the key input unit 110 to search for a desired program. If the user operates the key input unit 110, the scroll key is pressed. For example, when a direction key (↑, ↓, ←, →) according to the up, down, left, and right sides of the key input unit 110 is normally input (step 309), the microcomputer 120 includes a memory unit ( The program information of the time or the channel corresponding to the input direction key is read out of the program information for each channel stored in 140.

For example, when a user operates the key input unit 110 and inputs a right (→) scroll key signal to retrieve program information of a next time zone, the microcomputer 120 reads the memory unit 140 to read the corresponding time zone. Read the program information corresponding to the display on the screen through the OSD unit 170, the user to operate the key input unit 110 to input the down (↓) scroll key signal to retrieve the program information of the next channel band When the microcomputer 120 reads the memory unit 140, program information corresponding to the next channel is read and displayed on the screen through the OSD unit 170.

As a result, when a user inputs a scroll key signal in a state in which program information for each channel is displayed, the displayed guide screen is moved in units of lines or columns.

Meanwhile, in the state in which the program guide screen for each channel is displayed through the above-described step 305, the user can move the guide screen left, right, or up and down by one screen instead of one line or column unit. When the screen shift mode key signal included in 110 is input (step 307), the microcomputer 120 sets the displayed guide screen to the screen shift mode based on the input key signal (step 315).

Then, it is again checked whether the left, right, or up and down scroll key signals are input from the key input unit 110. If the scroll key signal is not input for a predetermined time (step 319), the microcomputer 321 ) Releases the screen moving mode set in step 315 (step 321).

On the contrary, if the left / right or up / down scroll key signal is input from the key input unit 110 while the currently displayed guide screen is set to the screen moving mode through the aforementioned step 315, the microcomputer 120 reads program information for each channel stored in the memory unit 140, reads program information corresponding to the next screen or the previous screen corresponding to the input scroll key signal (step 323) and displays the OSD unit 170. By providing, the currently displayed program guide screen is moved by screen unit (step 325).

For example, a program guide screen as shown in FIG. 4, that is, a previous channel after inputting a screen moving mode key signal in a state where program information about CH 6 to CH 10 from 9:00 to 11:00 is displayed. When the up (↑) scroll key signal is input to display program information about the microcomputer 120, the microcomputer 120 reads program information of one screen of the previous channel among the program information stored in the memory unit 140 and displays the OSD unit. As provided at 170, the program information screen for CH 1 to CH 6 in the same time zone is displayed as shown in Fig. 2A.

Similarly, when the program guide screen as shown in FIG. 4 is displayed and a down (↑) scroll key signal is input while the guide screen is set to the screen shift mode based on the screen shift mode key signal, the microcomputer 120 is input. ) Reads program information of one screen of the next channel among the program information stored in the memory unit 140 and provides the OSD information to the OSD unit 170, as shown in FIG. 2B. The program information screen for is displayed.

On the contrary, if a program guide screen as shown in Fig. 4 is displayed and the left (←) or right (→) scroll key signal is set in a state where the guide screen is set to the screen shift mode based on the screen shift mode key signal, When inputted, the microcomputer 120 reads program information of one screen of the program information stored in the memory unit 140 for the previous time zone (for the left scroll key signal) or the next time zone (for the right scroll key signal). The program information of the next or previous time zone of the same channel is displayed on one screen as shown in FIG. 2C (for the left scroll key signal) or 2D (for the right scroll key signal). Displayed one by one.

That is, in order to move the displayed guidance screen by one screen unit, the user inputs a screen moving mode key signal by first operating the key input unit 110 and then inputs a scroll key signal indicating a desired direction again. You will move one screen by time or channel.

In addition, a key signal for turning off the guidance screen is input or a key for performing another specific command while the program guidance screen is scrolled by one line or one screen unit through the processes 313 and 325 as described above. When a predetermined time elapses without inputting a signal (step 327), the microcomputer 120 cuts off the operation of the OSD unit 170, thereby turning off the program guide screen displayed on the screen, and overall operation of the satellite broadcasting receiver. Is switched to the normal viewing mode (step 331).

As a result, the user can move the program guide screen for each channel by one screen using the screen movement mode key provided in the key input unit 110.

As described above, according to the present invention, while the program guide screen for each channel of the satellite broadcasting receiver is displayed, the user moves the program guide screen by one screen by using the screen shift key, thereby performing a faster scrolling function. There is an effect that can be, thereby reducing the cumbersome number of key operations.

Claims (2)

In the method of controlling a program guide screen of a satellite broadcast receiver for receiving a satellite broadcast signal provided through a satellite, and pre-store the broadcast program information for each channel extracted from the broadcast signal, and display the same; A first step of displaying a program guide screen by reading the stored program information for each channel when a key signal for displaying information about the program for each channel is input; A second step of checking input of a screen moving mode key signal for moving the displayed program guide screen by one screen; When the screen movement mode key signal is not input and a key signal for scrolling the displayed program guide screen is input, the program information of a time or channel corresponding to the key signal is extracted from the stored program information for each channel. A third step of changing and displaying the displayed program guide screen by an hour or one channel unit; A fourth step of setting the displayed guide screen to a screen moving mode when the screen moving mode key signal is input; When a key signal for scrolling the displayed program guide screen is input while the guide screen is set to the screen moving mode, a program corresponding to the time or channel corresponding to the key signal from the stored program information for each channel. A fifth step of extracting information in units of one screen; And a sixth step of changing and displaying the displayed program guide screen by one screen unit on the basis of the extracted program information. The method of claim 1, wherein if the scroll key signal is not input for a predetermined time while the guide screen is set to the screen moving mode, the set screen moving mode is canceled and the first step is performed. The method of controlling a program guide screen of the satellite broadcasting receiver further comprising the step of repeating the process after step two.