KR19990086452A - Initial state control method of satellite broadcasting receiver - Google Patents

Abstract

According to the present invention, the user can easily recognize the operation of the receiver by displaying the corresponding advertisement message and the corresponding advertisement of the satellite broadcasting receiver during the time that the initial power is turned on at the satellite broadcasting receiver to tune the broadcasting channel to extract various additional information. The present invention relates to a method for controlling an initial state of a satellite broadcast receiver. To this end, the satellite broadcast receiver further includes a memory means for pre-store data for various advertisement screens, and the power supply of the satellite broadcast receiver. Displaying the advertisement data pre-stored in the memory means on a screen when a key signal for turning on the satellite broadcast receiver is input in the off standby power state; Receiving satellite broadcast signals provided from the satellites, and extracting ID information for tuning the plurality of broadcast channels from the received broadcast signals; Turning off the displayed advertisement screen, and tuning and displaying a predetermined channel based on the extracted ID information.

Description

Initial state control method of satellite broadcasting receiver

The present invention relates to a satellite broadcast receiver, and more particularly, to a satellite suitable for displaying the receiver's own advertisement or a corresponding announcement message for a time until the initial power is turned on at the satellite broadcast receiver and the satellite broadcast signal is received. An initial state control method of a broadcast receiver.

Satellite broadcasting is a broadcasting system that can receive a broadcast signal from a ground station (broadcasting earth station) using a broadcasting satellite and receive it directly from a satellite receiving antenna in each home. Receives a digital broadcast signal, extracts a broadcast signal of a selected channel among broadcast signals received by a transport demultiplexor, and decodes the extracted broadcast signal using a MPEG (Motion Picture Expert Group) method to provide a display device. Is configured to.

In addition, unlike the conventional terrestrial broadcasting, such a satellite broadcasting system provides program information for each channel, and the user can more conveniently select a desired broadcasting program or channel by referring to a program guide screen for each channel. In detail, the overall operating process of the satellite broadcasting receiver from the initial power-on state is as follows.

When the satellite broadcasting receiver is powered on by an external operation, first, it receives the bit stream provided from the satellite and extracts the broadcast signal and PAT / PMT data for each channel, where the PAT describes the components of the program. Packet information providing PID (Packet Identifier) information of a transport packet that transmits a table. Network information table (NIT) and service description table (SDT) for all transmitted bit streams. , Time Date Table (TDT), Receiver Command Massages (RCM), and PID information of the PMT. The PMT consists of program numbers in bit streams (elementary streams, sometimes referred to as ES) containing encoded video, audio, and data. It consists of information that defines the program by mapping.

Subsequently, the satellite broadcast receiver extracts EIT data of video and audio and service data for each channel. The EIT information includes program information for each channel, which is stored in a memory means in the satellite broadcast receiver. And displayed on a program guide screen of a predetermined type by a request signal from a user.

That is, in the satellite broadcast receiver, tuning for a plurality of channels is possible only when various additional information as described above is received, and a program guide screen for each channel can be displayed. The initial satellite broadcast receiver is powered on. Since it takes a certain time to extract the above-mentioned information, the video signal is not displayed on the screen during that time.

However, since most users do not know the initial operation process of the satellite broadcasting receiver as described above, there is a problem of mistaken as a failure of the receiver for a predetermined time when the screen is not displayed after the power is turned on. If the initial power is turned on in the satellite broadcasting receiver and the corresponding guidance message is displayed on the screen during the time of extracting various additional information, the above-described problem may be solved.

Accordingly, the present invention has been made in view of the foregoing, and the corresponding advertisement message and the self advertisement of the satellite broadcast receiver during the time of extracting various additional information for tuning the satellite broadcast channel by turning on the initial satellite broadcast receiver. An object of the present invention is to provide an initial state control method of a satellite broadcasting receiver capable of displaying a.

In order to achieve the above object, the present invention, in the initial state control method of the satellite broadcast receiver for receiving and displaying signals for a plurality of broadcast channels provided via satellite, the satellite broadcast receiver, And a memory means for pre-storing data, the method comprising: detecting an input of a key signal for turning on the satellite broadcast receiver in a standby power state in which the satellite broadcast receiver is turned off; If the key signal is input, displaying the advertisement data previously stored in the memory means on a screen; Receiving a satellite broadcast signal provided from the satellite and extracting ID information for tuning the plurality of broadcast channels from the received broadcast signal; And a fourth step of turning off the displayed advertising screen and tuning and displaying a predetermined channel based on the extracted ID information.

1 is a block diagram of a satellite broadcast receiver suitable for applying an initial state control method of a satellite broadcast receiver according to an embodiment of the present invention;

2 is a view for explaining an initial state control method of a satellite broadcast receiver according to an embodiment of the present invention;

3 is a flowchart illustrating an initial state control process of a satellite broadcast receiver according to a preferred embodiment of the present invention.

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

110: key input unit 120: microcomputer

130: tuner and demodulator 140, 145: first and second memory sections

150: MPEG Decoder 160: Video Encoder

170: menu generating unit 180: image synthesizing unit

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 broadcast receiver suitable for applying an initial state control method of a satellite broadcast 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. ), First and second memory units 140 and 145, an MPEG decoder 150, a video encoder 160, a menu generator 170, and an image synthesizer 180.

Referring to FIG. 1, the key input unit 110 is configured with key metrics on a remote controller or its own panel to generate a corresponding key signal by a user's operation and provide the corresponding key signal to the microcomputer 120. The tuner and demodulator 130 ) Receives a broadcast signal received through a broadcast signal receiver (i.e., a satellite reception antenna), not shown, based on a control signal provided from the microcomputer 120, and converts and demodulates the received broadcast signal into an intermediate frequency. And it is restored to the transport stream through a process such as error correction. In addition, the tuner and demodulator 130 extracts broadcast signals and PAT / PMT data for each channel, and extracts EIT data of video and audio and service data for each channel from the broadcast signal and PAT / PMT data for each channel, and provides them to the microcomputer 120. do.

The microcomputer 120 stores various additional information (including EIT information) extracted from the above-described tuner and demodulator 130 in a predetermined region of the first memory unit 140. Star program information is included. When the user selects an arbitrary broadcasting channel, the microcomputer 120 reads various additional information and ID information stored in the first memory unit 140 to display a video of the selected channel through the tuner and demodulator 130. The signal and audio signal are demultiplexed so that only the video and audio signals corresponding to the broadcast signal having the set PID are transmitted.

The MPEG decoder 150 may vary the length of the compressed and encoded video signal in consideration of the spatiotemporal and spatial correlation of the compressed and encoded audio signal and the video signal of the bit stream output from the tuner and the demodulator 130. The decoding is performed to decode the original signal before encoding using decoding techniques such as decoding, inverse DCT, inverse quantization, and motion compensation. At this time, the digital audio signal decoded and output from the MPEG decoder 150 is converted into an analog audio signal through an audio signal processor (not shown) and output through an speaker not shown. The digital video signal decoded from the MPEG decoder 150 is converted into an NTSC or PAL analog video signal through a predetermined signal processing by the video encoder 160 and then provided to the image synthesizer 180.

Meanwhile, when the initial satellite broadcasting receiver is manufactured, the second memory unit 145 stores advertisements for the receiver itself or advertisement information for the satellite broadcasting receiver manufacturing company as data in MPEG format, and the power of the satellite broadcasting receiver is turned off. When the satellite broadcasting receiver is powered on through the key input unit 110 in the above state, the microcomputer 120 reads the advertisement data stored in the second memory unit 145 and provides the advertisement data to the MPEG decoder 150. 150 decodes the advertisement data provided from the microcomputer 120 and displays it on the screen through the video encoder 160. That is, the initial satellite broadcast receiver is powered on to receive the satellite broadcast signal and to display the advertisement provided by the satellite broadcast receiver itself while tuning each broadcast signal from the satellite signal.

In addition, the menu generating unit 170 reads from the first memory unit 140 and provides various types of data provided through the microcomputer 120 into a menu screen of a predetermined type and provides the same to the image synthesizing unit 180. That is, the menu generator 170 pre-stores various types of menu screen format information provided by the satellite broadcasting receiver, and receives various additional data stored in the first memory unit 140 from the microcomputer 120 in a predetermined form. The menu screen is configured to be provided to the image synthesizing unit 180. Accordingly, the image synthesizing unit 180 superimposes and displays the decoded video signal provided from the MPEG decoder 150 and the menu screen provided from the menu generator 170.

Referring to Figure 1 will be described in detail the initial state control method of the satellite broadcast receiver according to an embodiment of the present invention.

When the user operates the key input unit 110 to turn on the receiver while the satellite broadcasting receiver is turned off, the microcomputer 120 reads the advertisement data of the satellite broadcasting receiver stored in the second memory unit 145. To the MPEG decoder 150. The MPEG decoder 150 decodes the transmitted advertisement data and displays the same on the screen through the video encoder 160 and the image synthesizer 180. In this case, the displayed advertisement screen has a current satellite as shown in FIG. A guide message 201 indicating an operation state of the broadcast receiver is included and displayed. That is, as shown in FIG. 2, information on a guide message indicating that the satellite broadcast signal is being received and the time required to refer to the program information is displayed together with its own advertisement screen.

At the same time, the microcomputer 120 generates a tuning control signal to the tuner and the demodulator 130 to generate a control signal for tuning the satellite broadcast signal provided from the satellite, not shown, and extracted from the received broadcast signal. Since various ID information and program information of each channel are stored in the first memory unit 140, a preparation process for tuning each broadcast channel received by the satellite broadcast receiver is performed.

After all the preparations for tuning the plurality of broadcast channels provided to the satellite broadcast receiver through the above-described process, the microcomputer 120 is read from the second memory unit 145 and through the MPEG decoder 150. After blocking the output advertisement data, the tuner and the demodulator 130 may preset a specific channel (eg, the most recently watched past viewing channel) based on the ID information stored in the first memory unit 140. A tuning control signal for tuning the broadcast signal is generated. Therefore, the tuner and demodulator 130 extracts the video data and the audio data for the broadcast channel corresponding to the tuning control signal of the microcomputer 120 and provides them to the MPEG decoder 150.

The MPEG decoder 150 decodes the video data and the audio data for the corresponding channel and outputs the same through the video encoder 160 and the audio signal processor (not shown). Therefore, a broadcast signal for a specific channel (past viewing channel) set in the satellite broadcasting receiver is displayed on the screen.

As a result, when the power of the initial satellite broadcasting receiver is turned on, a display message indicating an operation state of the current receiver and an advertisement stored inside the satellite broadcasting receiver are displayed for a time used to receive various packet information for tuning each channel. Done.

3 is a flowchart illustrating an initial state control process of a satellite broadcasting receiver according to a preferred embodiment of the present invention. A series of processes described above with reference to the accompanying drawings will be described in detail as follows.

When the power of the satellite broadcasting receiver is turned off and the overall operation of the satellite broadcasting receiver is operated in the standby power state (step 301), when a key signal for turning on the satellite broadcasting receiver is input through the key input unit 110 (step 303), the microcomputer 120 extracts the advertisement data stored in the second memory unit 145 and provides it to the MPEG decoder 150 (step 305). In addition, the MPEG decoder 150 decodes the same and displays its own advertisement screen of the satellite broadcasting receiver through the video encoder 160 and the image synthesizer 180. In this case, the displayed advertisement screen is illustrated in FIG. The display message includes a guide message 201 indicating the operation state of the satellite broadcasting receiver, thereby informing the user that it takes a predetermined time (for example, 5 seconds) to receive the satellite broadcasting signal (step 307).

When the advertisement screen and the guidance message of the satellite broadcast receiver are displayed on the screen through the above-described process, the tuner and demodulator 130 receives the satellite broadcast signal provided from the satellite through a satellite antenna (not shown) (step S1). The microcomputer 130 extracts various ID (including channel ID) information and program information for each channel from the satellite broadcast signal received through the tuner and the demodulator 130 and stores them in the first memory unit 140. In addition, the present invention can tune to a plurality of broadcast channels provided to the satellite broadcast receiver and process broadcast signals for each channel.

Meanwhile, when the extraction process for the various ID information and the program information for each channel is completed (step 313), the microcomputer 120 blocks the advertisement data read from the second memory unit 145 to display the advertisement currently displayed on the screen. The screen and the guidance message are turned off (step 315), and the ID information of each channel stored in the first memory unit 140 is read to set a specific broadcast channel (for example, the most recently watched broadcast) set in the satellite broadcast receiver. A control signal for tuning the channel) is generated in the tuner and the demodulator 130. Therefore, the tuner and demodulator 130 extracts the audio data and the video data of the broadcast channel corresponding to the control signal of the microcomputer 120 from the satellite broadcast signal and provides it to the MPEG decoder 150, thereby broadcasting the corresponding channel. The signal is displayed on the screen (step 317).

When the satellite receiver is powered on, it displays a message indicating the current operating status of the receiver and an advertisement screen stored inside the satellite receiver during the time required to receive various packet information and ID information for tuning each channel. Therefore, there is an effect that the user can easily grasp the receiver operation state, thereby preventing the user from mistaken for the malfunction of the receiver when the initial receiver is driven.

Claims (3)

In the initial state control method of a satellite broadcast receiver for receiving and displaying signals for a plurality of broadcast channels provided through a satellite, The satellite broadcasting receiver further includes a memory means for pre-store data on various advertisement screens, Detecting a input of a key signal for turning on the satellite broadcast receiver in a standby power state in which the satellite broadcast receiver is turned off; If the key signal is input, displaying the advertisement data previously stored in the memory means on a screen; Receiving a satellite broadcast signal provided from the satellite and extracting ID information for tuning the plurality of broadcast channels from the received broadcast signal; And turning off the displayed advertisement screen, and tuning and displaying a predetermined channel based on the extracted ID information. The initial state control of a satellite broadcast receiver according to claim 1, wherein the second step further comprises a step of displaying a guide message informing that the satellite broadcast receiver is receiving a satellite broadcast signal when the key signal is input. Way. The method of claim 1, wherein the predetermined channel is a broadcast channel most recently watched by the satellite broadcast receiver.