KR100569552B1 - Method for eliminating channel in a satellite broadcast receiver - Google Patents

Abstract

A method of deleting a channel of a satellite broadcasting receiver according to the present invention, after receiving program guide information from any satellite together with power-on of the satellite broadcast receiver, comparing a program guide information with previously stored channel information and changing a service ID or disappearing channel Determining whether there is a channel, and if there is a channel whose service ID has changed or disappeared, registering the channel (s) whose service ID has changed or disappeared in the deletion list, and after registering the deletion list, selecting a user's channel Receiving a broadcast signal for the selected channel and determining whether a synchronization signal exists in the received broadcast signal; and if the synchronization signal does not exist in the received broadcast signal, registering the channel selected by the user to the deletion list And if the synchronization signal exists in the received broadcast signal, If selected in the step of providing a broadcast corresponding to a channel, and a channel deletion request from the user of the broadcast viewing by removing the registered channel for removal from the memory comprises the step of groups Update the stored channel information in the memory.

As such, the present invention automatically searches for and registers channels whose service IDs are changed or disappeared and then deletes them according to a user's deletion request, thereby enhancing user convenience and maximizing memory usage efficiency inside the satellite broadcasting receiver. Can be.

Description

How to delete channels on satellite receivers {METHOD FOR ELIMINATING CHANNEL IN A SATELLITE BROADCAST RECEIVER}

1 is an internal block diagram of a satellite broadcast receiver to be applied to the present invention.

2 is a flowchart illustrating a process in which a satellite broadcasting receiver automatically collects and deletes channels in which a service ID is changed or deleted, according to the present invention.

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

100 tuner and demodulator 110 transport demultiplexer

120: control unit 130: memory

140: MPEG decoder 150: D / A converter

160: menu generating unit 170: image synthesizing unit

The present invention relates to a satellite broadcast receiver, and more particularly, to a method of canceling an unreceivable channel of a satellite broadcast receiver for automatically searching for and canceling an unreceivable channel.

Recently, in the satellite broadcasting method, which is rapidly expanding its use, a satellite broadcasting tuner provided in a satellite broadcasting receiver (receiver) tunes a channel selected by a user by inputting an IF signal received through a low noise converter. . In addition to maximizing channel utilization, improving video and audio signal quality, and facilitating additional digital service data transmission, such satellite broadcast receivers can be a major advantage.

The number of satellite broadcast channels that can be viewed by such satellite broadcast receivers is usually thousands, and a few of them are newly created or destroyed each month. In this case, it is possible for a user to search for and add a newly created channel by referring to a satellite broadcast guide or the Internet, but it is difficult to search for and delete which channel of which satellite has disappeared.

An object of the present invention is to solve such a problem of the prior art, the channel to be deleted based on the PMT table received at power-on of the satellite broadcast receiver and the channel to be deleted according to the presence or absence of a synchronization signal for the channel selected by the user By collecting the channels and deleting the channels to be deleted according to the user's request, it is intended to provide a channel deletion method of the satellite broadcasting receiver that can not only enhance user convenience but also efficiently manage the memory inside the satellite broadcasting receiver. .

In order to achieve the above object, the present invention provides a channel deleting method of a satellite broadcasting receiver in which channel information stored in a memory is stored, and receives program guide information from any satellite in addition to powering on the satellite broadcasting receiver. Comparing program guide information with previously stored channel information to determine whether a channel having a changed or disappeared service ID exists; and as a result of the determination, if a channel having a changed or disappeared service ID exists, the service changed or disappeared channel; Registering (s) with the deletion list, and after registering the deletion list, receiving a broadcast signal for the selected channel according to a user's channel selection, and determining whether a synchronization signal exists in the received broadcast signal; As a result of the determination, a synchronization signal does not exist in the received broadcast signal. If not, registering the channel selected by the user in a deletion list; providing a broadcast corresponding to the channel selected by the user when a synchronization signal exists in the received broadcast signal as a result of the determination; Removing the channels registered in the deletion list from the memory when there is a channel deletion request from the user, and updating channel information previously stored in the memory.

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

1 is an internal block diagram of a satellite broadcast receiver to be applied to the present invention. The tuner and tuner demodulator 100, the transport demultiplexer 110, the controller 120, the memory 130, the MPEG decoder 140, The D / A converter 150, the menu generator 160, and the image synthesizer 170 are included.

When the user's operation signal according to the power supply for the initial driving of the satellite broadcasting receiver is recognized, the control unit 120 adjusts the tuning control signal for tuning the last channel viewed immediately before the satellite broadcasting receiver is turned off or the preference set by the user. The tune control signal for tuning the channel is provided to the tuner and demodulator 100. The tuner and demodulator 100 tunes a channel corresponding to a tuning control signal provided from the control unit 120 from the satellite broadcast signal received through the satellite broadcast receiving antenna and performs an intermediate frequency (IF) on the broadcast signal of the channel tuned. After the conversion, demodulation and error correction are performed to restore the transport stream. At this time, the tuner and demodulator 100 extracts the PID of the PAT from the recovered transport stream, and then extracts the PID of the PMT using the PID of the PAT, and then uses the PID of the PMT to determine the PID of the audio / video of each channel. The audio / video signal of each channel according to the PID of the audio / video is extracted, and each program guide information is extracted and provided to the transport demultiplexer 110.

The transport demultiplexer 110 provides the MPEG decoder 140 with a video signal and an audio signal for each channel provided by the tuner and the demodulator 100, and provides broadcast program guide information for each channel to the controller 120. to provide. At this time, the control unit 120 compares the program guide information provided from the transport demultiplexing unit 110 with the channel information previously stored in the memory 130, and when the service ID is changed or disappears, the channel is changed or disappeared. Are registered in the memory 130 as a deletion list.

In addition, the controller 120 stores the program guide information for each channel by addressing the memory 130, and is used to tune a specific channel by the user based on the stored program guide information, and is also requested by the user. The program guide information corresponding to each channel to be read is provided to the menu generator 160.

The menu generator 160 prestores various types of menu screen format information that can be configured as a menu screen, and converts the program guide information provided from the controller 120 into a menu screen corresponding to a predetermined format. It is configured and provided to the image synthesizing unit 170. In particular, when the delete request signal of the channels registered in the deletion list is input from the user manipulation signal, the menu generation unit 160 configures the channels registered in the deletion list as a menu screen under control of the control unit 120 to configure the image synthesizer ( 170).

In addition, if the synchronization signal is not detected in the broadcast signal corresponding to the channel selected from the user manipulation signal, the controller 120 registers the channel selected by the user to the deletion list.

The MPEG decoder 140 restores the video / audio signal for each channel provided by the transport demultiplexer 110 to the original signal before encoding after the control of the controller 120, and then the digital audio signal is converted to D / A. Provided to the audio signal processing stage including the unit 150, the digital video signal is converted to NTSC or PAL analog video signal and provided to the spiritual synthesis unit 170.

The image synthesizer 170 mixes the decoded video signal provided by the MPEG decoder 140 and the menu screen provided by the menu generator 160 under the control of the controller 120 and displays the same on the monitor. Displays the channels registered in and deletes the channels registered in the deletion list according to the deletion request of the user. Accordingly, the channels registered in the deletion list among the channel information stored in the memory 130 are deleted, so that the channel information stored in the memory 130 is updated.

A process of automatically collecting and deleting channels whose service ID is changed or deleted by the satellite broadcasting receiver having the above configuration will be described with reference to FIG. 2. 2 is a flowchart illustrating a process in which a satellite broadcasting receiver automatically collects and deletes channels in which a service ID is changed or deleted, according to the present invention.

Referring to FIG. 2, when a user's manipulation signal according to power supply for initial driving of the satellite broadcasting receiver is applied (S200), the controller 120 tunes to tune the last channel viewed immediately before the satellite broadcasting receiver is turned off. The control signal is provided to the tuner and the demodulator 100, and the tuner and the demodulator 100 tunes the channel according to the tuning control signal of the controller 120 and performs intermediate frequency conversion, demodulation and Restore to the transport stream through the process of error correction, etc. At this time, the tuner and demodulator 100 extracts program guide information for each channel from the restored transport stream (S202 and S204). The program guide information for each channel is provided to the controller 120, and the controller 120 compares the program guide information for each channel and the channel information stored in the memory 130 to determine whether there is a channel whose service ID is changed or disappeared. (S206).

As a result of the determination in S206, when there is a channel whose service ID is changed or disappeared, the controller 120 registers the corresponding channel (s) in the deletion list and proceeds to step S210 to wait for the user's channel selection.

As a result of the determination in S206, when the service ID is changed or there is no channel disappeared, the controller 120 waits for the user to select a channel to watch.

When channel information selected by a user is input from the user manipulation signal (S210), the controller 120 provides the tuner and the demodulator 100 with a tuning control signal for tuning the channel selected by the user.

The tuner and demodulator 100 tunes a channel corresponding to a tuning control signal from a satellite broadcast signal received through a satellite broadcast receiving antenna, and the controller 120 receives a video signal among the tuned broadcast signals to detect a synchronization signal. Determine whether it is (S212),

As a result of the determination in S212, when the synchronization signal is detected, the video audio signal corresponding to the channel selected by the user is provided to the MPEG decoder 140 through the transport demultiplexer 110, and the MPEG decoder 140 selects the user. After restoring the video and audio signals of the channel to the original signals before encoding, the digital audio signals are provided to an audio signal processing stage including the D / A converter 150, and the digital video signals are converted into NTSC or PAL analog video signals. After the conversion is output on the monitor (S216).

As a result of the determination in S212, when the synchronization signal is not detected, the controller 120 registers the channel selected by the user in the deletion list (S214).

If the channel deletion request signal is input from the user's manipulation signal while transmitting the broadcast signal corresponding to the channel selected by the user in S216 (S218), the controller 120 stores the information of the channels registered in the deletion list in the memory 130. A menu screen for deleting channel information corresponding to the deletion list and a video signal provided from the MPEG decoder 140 are mixed and displayed on the monitor. After the user selects the delete function, the controller 120 deletes the channels registered in the delete list (S220). That is, the controller 120 updates the channel information of the memory 130 by removing the channels corresponding to the deletion list among the channels previously stored in the memory 130.

Although the present invention has been described as an example in which the satellite broadcast receiver collects and deletes channels to be deleted only for the channels selected by the user when the power is turned on, in another embodiment, the standby mode of the satellite broadcast receiver, that is, the power is turned off. Program information about the channels provided by multiple satellites is created, and the deletion list is generated according to the existence of the channel whose service ID is changed or disappeared, and then the channel stored in the deletion list is deleted at the request of the user. You can.

As described above, the present invention collects channels to be deleted based on the PMT table received when the satellite broadcast receiver is powered on, collects channels to be deleted according to the presence or absence of a synchronization signal for a channel selected by the user, and then according to the user's request. By deleting the channels to be deleted, not only can the user's convenience be enhanced, but also the memory inside the satellite broadcast receiver can be managed efficiently.

Claims (1)

A channel deletion method of a satellite broadcasting receiver in which channel information previously stored in a memory is stored. Receiving program guide information from any satellite in addition to powering on the satellite broadcasting receiver and comparing the program guide information with previously stored channel information to determine whether a channel having a changed service ID or a missing channel exists; If the service ID is changed or disappears as a result of the determination, registering the channel (s) in which the service ID is changed or disappeared to a deletion list; After registering the deletion list, receiving a broadcast signal for the selected channel according to a user's channel selection, and determining whether a synchronization signal exists in the received broadcast signal; Registering the channel selected by the user in a deletion list when there is no synchronization signal in the received broadcast signal as a result of the determination; Providing a broadcast corresponding to the channel selected by the user when a synchronization signal exists in the received broadcast signal as a result of the determination; Updating the channel information previously stored in the memory by removing channels registered in the deletion list from the memory when a channel deletion request is received from the user while watching the broadcast; Channel deletion method of the satellite broadcast receiver comprising a.

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