KR20000003666A - Program information data display method of satellite broadcast receiver - Google Patents

Abstract

PURPOSE: A program information data display method of satellite broadcast receiver is provided to prevent confusion occurred to viewers due to time difference. CONSTITUTION: The program information data display method of satellite broadcast receiver comprises: the first step receiving program information data and TDT data when the power for operating a satellite broadcast receiver is ON; the second step determining whether the time difference between satellite broadcast transmitting area and receiving area is occurred; the third step converting the TDT data received in the second step so as to respond to the time of the receiving area if the time difference is occurred; the forth step renewing and storing the program information data received in the first step so as to respond to the converted TDT data in the third step; and the fifth step reading and displaying the program information data stored in the third step.

Description

How to Display Program Guide Information for Satellite Broadcasting Receivers

The present invention relates to a method for displaying program guide information of a satellite broadcasting receiver. In particular, the program guide information and time information included in a satellite broadcast signal are changed to match the time of a satellite broadcasting reception area to display a satellite broadcast. A method for displaying program guide information of a receiver.

Satellite broadcasting uses a satellite (communication satellite) located at an altitude of approximately tens of kilometers to hundreds of kilometers (for example, Mugunghwa satellite: 36,000 km) on the earth's surface to transmit broadcast signals from ground stations (broadcast earth stations) Provides a broadcast signal to the area, each home refers to a broadcast system capable of directly receiving a satellite broadcast signal transmitted from a satellite through a satellite broadcast antenna. In such a satellite system, when a satellite broadcast signal is received through a satellite broadcast receiving antenna, the satellite system recovers the digital broadcast signal in the form of a transport stream in a packet unit through conversion to demodulation (IF), demodulation, and error correction. The reconstructed digital broadcast signal extracts a broadcast signal of a selected channel among the digital broadcast signals received through a transport demultiplexor process, and then decodes the extracted broadcast signal by a moving picture expert group (MPEG) method. It is configured to provide.

Unlike conventional terrestrial broadcasting, such a satellite broadcasting system provides broadcast program information for each channel in addition to the broadcast signal for each channel. Therefore, the user can more conveniently and easily select a desired broadcast program or channel by referring to program guide information for each channel provided by the satellite broadcasting system.

However, since the satellite broadcasting system provides satellite broadcasting signals to a large area using satellites as described above, a time difference may occur between an area transmitting satellite broadcasting and an area receiving satellite broadcasting. For example, when the area where the satellite broadcast signal is transmitted, that is, the broadcasting earth station is "Seoul" and the receiving area is "Beijing of China", the time difference between "Seoul" and "Beijing" occurs for about 1 hour. That is, time information provided in the transport stream in packet units, that is, time data table (TDT) information and program guide information are transmitted based on the time of the region to be transmitted, and thus do not match the time in the region of the receiving region. Cases can occur that can cause confusion for viewers. For example, if the "news program" in the transmitting area is a program that is broadcast from 9 pm to 10 pm, viewers in the receiving area, for example, one hour later than the transmitting area, will receive the "news program" at 8 pm While the program guide information is displayed on the screen as being broadcast at 9 pm, there was a problem that confusion may occur to viewers in the receiving area when there is a time difference between the transmitting area and the receiving area.

The present invention has been made to solve the above-mentioned problems, an object of the present invention is to change the time information to match the time of the satellite broadcasting receiving area when there is a time difference between the region transmitting the satellite broadcasting signal and the receiving region. The present invention provides a method of displaying program guide information of a satellite broadcasting receiver for preventing confusion that may occur to viewers in a reception area by displaying guide information on a screen.

According to the present invention for achieving the above object, the satellite broadcasting receiving region name is preset, the satellite broadcasting to display the program guide information on the screen in the state that the time difference between the satellite broadcasting transmitting region and the satellite broadcasting receiving region is already stored; A method of displaying program guide information of a receiver, comprising: a first step of receiving program guide information and TDT information when a power source for operating a satellite broadcasting receiver is turned on; A second step of determining whether or not a time difference occurs between a region transmitting a satellite broadcasting signal and a region receiving the satellite broadcasting signal; As a result of the determination of the second step, when it is determined that the time difference occurs between the satellite broadcast transmission area and the satellite broadcast reception area, the TDT information received in the second step is changed to correspond to the time of the area receiving the satellite broadcast signal. Third step; A third step of updating and storing the program guide information received in the first step so as to correspond to the TDT information changed by the third step; And a fourth step of reading the program guide information stored in the third step and displaying it on the screen when a user's operation signal for displaying the program guide screen is input.

1 is a block diagram showing the configuration of an apparatus for displaying program guide information of a satellite broadcasting receiver according to the present invention;

2 is a flowchart of a process for displaying program guide information of a satellite broadcasting receiver according to the present invention;

3 is a diagram illustrating storage of a parallax value according to an embodiment of the present invention.

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

100 tuner and demodulator 110 transport demultiplexer

120: MPEG decoder 130: control unit

140, 150: memory 160: menu generator

170: image synthesis unit

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

1 is a block diagram showing the configuration of an apparatus for displaying program guide information of a satellite broadcasting receiver according to the present invention. The tuner and demodulator 100, the transport demultiplexer 110, the MPEG decoder 120, and the controller 130 are shown in FIG. ), A first memory 140, a second memory 150, a menu generator 160, and an image synthesizer 170.

Referring to FIG. 1, the tuner and the demodulator 100 may be understood as described below, and the user's operation signal for the operation of the satellite broadcast receiver is applied to the controller 130, and accordingly, the controller 130 controls the tuning. The signal is provided to the tuner and demodulator 100. That is, when the user's manipulation signal for turning on the satellite broadcasting receiver is applied, the controller 130 tunes a tuning control signal for tuning the last channel broadcast before the satellite broadcasting receiver is turned off or a preferred channel set by the user. To provide a tune control signal to the tuner and demodulator 100 for the purpose.

Accordingly, the tuner and demodulator 100 tunes a channel corresponding to the tuning control signal provided from the controller 130 from the satellite broadcast signal received through the satellite broadcast receiving antenna and performs an intermediate frequency (for the broadcast signal of the tuned channel). After the conversion to IF), demodulation and error correction, the data is restored to the transport stream. At this time, the recovered transport stream includes a program association table (PAT) / program map table (PMT), and the tuner and demodulator 100 broadcast signals for each channel from the PID (program identification) of the PAT and PMT. That is, the video signal, the audio signal, the event information table (EIT), the time data table (TDT), and the broadcast program guide information are extracted and provided to the transport demultiplexer 110. At this time, the transport demultiplexer ( The channel 110 provides the video signal and the audio signal for each channel provided by the tuner and the demodulator 100 to the MPEG decoder 120, and provides the EIT, TDT information, and broadcast program guide information to the controller 130.

The controller 130 provides the EIT, the TDT information, and the broadcast program guide information provided by the transport demultiplexer 110 to the first memory 140, stores the information in the corresponding address, and stores the stored information in the corresponding address. When an operation signal for tuning a specific channel is provided, the control signal is used to tune a specific channel selected from the transport stream, and program guide information for each channel required by the user is configured as a menu screen and displayed on a monitor. As shown in FIG. 3, the second memory 150 stores a parallax value for an area that can be transmitted by the satellite. In this case, the region name and time difference shown in FIG. 3 are the region names that can receive and transmit a broadcast signal transmitted from a Seoul broadcasting station when the satellite is "Mugunghwa communication satellite," based on "Seoul and Tokyo". It shows the name of the area where it can be sent. If the receiving area is "Hong Kong, Beijing, Manila", it is stored as "-1" because it is 1 hour later than Seoul. 2 "," Sydney, Melbourne "is 1 hour faster than Seoul, so" +1 ", and" Okhotsk "is 2 hours faster than Seoul, so" +2 ". That is, the second memory 150 stores the time difference between the area transmitting the satellite broadcast and the area receiving the satellite broadcast, and also stores the current reception area name. That is, the controller 130 provides the current reception area name set at the initial setting of the satellite broadcast receiver to the corresponding address of the second memory 150, so that the second memory 150 has the current satellite broadcast reception area as described above. The time difference between the name and the satellite broadcast area and the satellite broadcast area is stored, and the current satellite broadcast area name continues to store this information until it is reset.

Therefore, when the power supply for the operation of the satellite broadcast receiver is turned on by a user operation, the controller 130 converts the time difference between the satellite broadcast transmission area and the satellite broadcast reception area from the second memory 150 and transfers the transport demultiplexer ( After converting the program guide information and the TDT information provided in step 110 in accordance with the converted parallax, updated and stored in the first memory 140, the program guide information is read and provided to the menu generator 160 when the user requests the program guide information. do.

On the other hand, the MPEG decoder 120 is a variable length of the compression-coded video signal and the audio signal provided by the transport demultiplexer 110, for example, in consideration of the spatiotemporal and spatial correlation of the video signal. By using decoding techniques such as decoding, inverse DCT, inverse quantization, and motion compensation, the digital speech (audio) signal is provided to an audio signal processing stage (not shown) to be converted to an analog audio signal, thus not shown. The digital video signal is converted into an NTSC or PAL analog video signal and then provided to the image synthesizer 170.

In addition, the menu generator 160 may store various types of menu screen format information for configuring various information provided by the satellite broadcasting receiver, for example, program guide information as a menu screen. The program guide information read from the first memory 140 is configured as a menu screen corresponding to a predetermined format and provided to the image synthesizing unit 170. At this time, the image synthesizing unit 170 mixes the decoded video signal provided by the MPEG decoder 120 and the menu screen provided by the menu generator 170 under the control of the control unit 130 and displays them on the monitor. do.

2 is a flowchart illustrating a process for performing a method for displaying program guide information of a satellite broadcasting receiver according to the present invention. FIG. 2A is a flowchart illustrating a process for setting a reception area name during initial setting of a satellite broadcasting receiver. 2A is a flowchart of a process for displaying program guide information by changing time information to correspond to the time of a reception area name set by FIG. 2A.

First, a process of setting a satellite broadcasting reception area name will be described with reference to FIG. 2A.

In step 200, the controller 130 determines whether the satellite broadcasting receiver is in the initial setting mode, and if the satellite broadcasting receiver is in the initial setting mode, the controller 130 proceeds to step 201 and configures a menu screen for the satellite broadcasting reception area name setting mode. When controlling the 160, the menu generator 160 constructs a menu screen for the satellite broadcasting reception area name setting mode under the control of the controller 130, and provides the menu screen to the image synthesizer 170 and the image synthesizer 170. ) Displays the satellite broadcasting reception area name setting menu screen to the display side under the control of the controller 130.

The controller 130 proceeds to step 202 and stores the satellite broadcast current reception area name input through the key input unit (not shown) in the corresponding address of the second memory 150.

Next, a process for performing a screen displaying method of program guide information in which the time information is changed to correspond to the current time of the satellite broadcast reception region name set by FIG.

First, when the power-on operation signal for operating the satellite broadcast receiver is provided in step 250, the controller 130 proceeds to step 251 to receive program guide information and TDT information provided by the transport demultiplexer 110. The flow proceeds to step 252.

The controller 130 proceeds to step 252 and transmits the time difference between the satellite broadcasting transmission area that provides the program guide information and the TDT information and the satellite broadcasting reception area that currently receives the program guide information and the TDT information to the second memory 150. Comparative detection is performed based on the time difference between the stored satellite broadcasting transmission area and the satellite broadcasting reception area. For example, if the satellite is "Mugunghwa communication satellite," the satellite broadcasting signal including program guide information and TDT information is transmitted from Seoul broadcasting station. Thus, the time difference between "Seoul" and the current satellite broadcasting receiving area is compared. When the broadcast reception area name is "Beijing", the controller 130 detects a time difference, that is, "-1" between the satellite broadcast transmission area and the satellite broadcast reception area as shown in FIG. 3 stored in the second memory 150. The program guide information currently received to correspond to the detected parallax value is changed to correspond to the time of the current satellite broadcasting reception area and stored in the first memory 140 (steps 253 and 254).

That is, when it is determined that the time difference occurs between the satellite broadcast reception area and the satellite broadcast reception area as a result of performing step 252, the controller 130 proceeds to step 253 to match the currently received TDT information with the time of the current satellite broadcast reception area. After the change, the process proceeds to step 254 and the program guide information is also updated by the TDT information changed in step 253 and stored in the first memory 140. For example, when the time difference between the satellite broadcasting transmission area and the satellite broadcasting reception area stored in the second memory 150 is "-1", this value is one hour later than the satellite broadcasting transmission area. Update and store the currently received TDT information and program guide information. The &quot; -1 &quot; The first memory 140 is controlled to be stored at the corresponding address of 140.

On the other hand, the controller 130 has a time difference between the satellite broadcast transmission area and the current satellite broadcast reception area from the time difference between the satellite broadcast transmission area and the satellite broadcast reception area shown in FIG. 3 stored in the second memory 150 in step 252. If it is determined that there is no name, that is, if the current satellite broadcast reception area name belongs to the same time zone as the satellite broadcast transmission area, for example, if the current satellite broadcast reception area name is "Tokyo," the control unit 130 proceeds to step 255 and transmits the signal. The program guide information and the TDT information currently received through the port demultiplexer 110 are stored in a corresponding address of the first memory 140. The controller 130 proceeds to step 256 and if the user inputs an operation signal for displaying the program guide screen, the operation proceeds to step 257 when the operation signal for displaying the program guide screen is input to the first memory 140. The menu generating unit 160 is controlled to read the program guide information stored in the menu screen and configure the menu screen, and the menu generating unit 160 reads the program from the first memory 140 under the control of the controller 130. The guide information is configured into a menu screen corresponding to a predetermined predetermined format and displayed on the display means.

Therefore, when the time difference between the satellite broadcasting transmission area and the satellite broadcasting current reception area occurs, the time difference is changed by storing program guide information and TDT information received through the satellite broadcasting receiver to match the time of the satellite broadcasting current reception area. It provides an effect that can prevent the confusion of viewers due to occurrence.

Claims (2)

A program guide information display method of a satellite broadcast receiver for displaying program guide information on a screen in which a satellite broadcast reception area name is preset and a time difference value between the satellite broadcast reception area and the satellite broadcast reception area is previously stored. A first step of receiving program guide information and TDT information when the power for operating the satellite broadcasting receiver is turned on; A second step of determining whether or not a time difference occurs between a region transmitting a satellite broadcasting signal and a region receiving the satellite broadcasting signal; As a result of the determination of the second step, when it is determined that the time difference occurs between the satellite broadcast transmission area and the satellite broadcast reception area, the TDT information received in the second step is changed to correspond to the time of the area receiving the satellite broadcast signal. Third step; A third step of updating and storing the program guide information received in the first step so as to correspond to the TDT information changed by the third step; And a fourth step of reading the program guide information stored in the third step and displaying the program guide information on the screen when a user's manipulation signal for the program guide screen is input. The method of claim 1, wherein the determination of whether the time difference occurs in the second step is performed based on the preset reception area name and the previously stored time difference value.