KR100708383B1 - Method for offering digital radio service - Google Patents

Abstract

The present invention relates to a method of providing a digital broadcast service when a transmission error occurs for a digital TV (TV) to actively service it without passive channel search when the broadcast cannot be viewed due to a transmission error during digital broadcast viewing.

This is the first step of displaying a no-signal or banner on the main screen of the PIP when a transmission error occurs while watching digital broadcasting, and counting a timeout; A second step of determining whether or not there is an analog signal for a corresponding transmission error channel by searching a broadcasting station mapping table after the counting time-out; A third step of selecting another subchannel broadcasting the same program of a corresponding transmission error channel by searching a system information database if timeout occurs after the counting; A fourth step of returning to the third step if there is no analog signal as a result of the determination in the second step, and performing analog tuning to display on the sub-screen of the PIP if the analog signal exists; And a fifth step of displaying the main screen of the PIP after tuning the subchannel selected through the third step.

Digital broadcasting, transmission error, sub picture, service, channel search

Description

Method for providing digital broadcasting service when transmission error occurs {Method for offering digital radio service}

1 is a flowchart illustrating a conventional method for providing a service of digital broadcasting;

2 is a flowchart illustrating a digital broadcast service providing method when a transmission error occurs according to the present invention;

3 is a detailed view of the flowchart shown in FIG. 2;

4 is an example of a screen on which program start / end time information of each channel being broadcasted in FIG. 3 is displayed;

5 is an example illustrating a list stored in a system information database according to the present invention.

The present invention relates to a digital broadcast service providing method. More particularly, when a digital broadcasting service cannot be viewed due to a transmission error while watching a digital broadcast, a transmission error for the digital television (TV) to actively service the same without passive channel searching. The present invention relates to a digital broadcasting service providing method.

In general, a TV broadcast program determines whether each broadcast signal received through all channels receivable from a TV station is analog or digital, and then tunes the TV program of a desired channel by analog and digital tuning according to the result determined during the channel search. Allows you to watch (video and audio signals).

Recently, as the interest in digitization is increased due to the development of communication technology, TV broadcasting is also mainly used as a digital broadcasting service for tuning and displaying a channel having a digital signal.

The service providing method of the digital broadcasting is as follows.

1 is a flowchart illustrating a conventional method of providing a digital broadcast service. When a user first selects and changes a channel by inputting a remote controller, information about a selected channel is retrieved from a previously stored channel map (S1, S2).

After the search, the digital signal is tuned to the frequency of the selected channel, and if the digital signal exists, the tuned digital signal is transmitted to the TV set for decoding and displayed (S3 to S6), and the digital signal does not exist or a transmission error. If occurs, the signal is output through the TV set (S7).

Alternatively, a banner indicating no signal or searching for a signal is displayed on the screen of a conventional digital TV.

However, since no signal or banner is continuously maintained until the transmission error is overcome, the user waits until the transmission status becomes normal or the user directly operates the remote controller to find another channel broadcasting the same program. An action is required to perform a search. Accordingly, there is a problem that the user is inconvenient.

Accordingly, the present invention has been made to solve the above-described problems, when the broadcast is not viewed due to a transmission error during viewing of digital broadcasting, by searching for a channel serving the same broadcast station or the same program and generates a sub-screen of the PIP The present invention relates to a digital broadcast service providing method when a transmission error occurs in which a digital TV actively services the channel without changing a user's channel.

According to an aspect of the present invention, there is provided a first step of displaying a no-signal or banner on a main screen of a PIP when a transmission error occurs while watching digital broadcasting, and counting a timeout; A second step of determining whether or not there is an analog signal for a corresponding transmission error channel by searching a broadcasting station mapping table after the counting time-out; A third step of selecting another subchannel broadcasting the same program of a corresponding transmission error channel by searching a system information database if timeout occurs after the counting; A fourth step of returning to the third step if there is no analog signal as a result of the determination in the second step, and performing analog tuning to display on the sub-screen of the PIP if the analog signal exists; And a fifth step of displaying the main screen of the PIP after tuning the subchannel selected through the third step.

Further, after the fourth step or the fifth step, a sixth step of switching between the sub-screen of the PIP and the main screen of the PIP by a user's operation may be further included.

In addition, the system information database includes database information including a channel name of the transmission error channel, a program name currently being broadcast, a name of another subchannel having the same program as the program, and a start and end time of each subchannel program. It is characterized by being.

The third step may further include: searching for a current broadcast program of the transmission error channel through the system information database; Determining the presence or absence of another subchannel having the same program as the current broadcast program; If it is determined that there is no other subchannel, ending; and if there is another subchannel, checking whether each channel is on the basis of the current time; Extracting another subchannel on the air and extracting a program name, program start and end time information of the extracted subchannel; Calculating an elapsed playing time of a program broadcasted in each subchannel by comparing the presence or absence of broadcasting of the other subchannels and a program start and end time based on the current time; And selecting the most recently broadcast channel from the current time as a result of the calculation.

In this case, the most recently broadcast channel from the current time is characterized by the smallest elapsed playing time.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;

2 is a flowchart illustrating a digital broadcast service providing method when a transmission error occurs according to the present invention, FIG. 3 is a detailed view of the flowchart shown in FIG. 2, and FIG. An example of a screen on which end time information is displayed.

First, referring to FIG. 2, in the digital broadcasting service providing method according to the present invention, when a transmission error occurs while watching digital broadcasting, a channel serving the same broadcasting station or the same program is searched and a sub-picture of PIP (Picture In Picture) is generated and displayed. As a result, the user actively seeks to find a channel error without changing a channel for directly searching for the same broadcast, thereby providing a broadcast service.

 As shown in the figure, during a broadcast viewing with priority of digital broadcasting in a broadcasting environment where analog broadcasting and digital broadcasting coexist, if a transmission error occurs, a non-screen or banner screen is displayed on the main screen of the PIP (S100). , S110, S120).

At the same time, the timeout is continuously counted, and when a predetermined time elapses, the broadcasting station mapping table is searched or the system information database is searched so that the corresponding broadcasting channel can be found and viewed (S130).

In the case of searching for a broadcasting station mapping table (S140), first, after confirming whether an analog signal exists in the corresponding broadcast channel, if no analog signal exists, the process passes to search for a system information database, and if an analog signal exists, PIP Create a sub-screen and tune analog channels (S141 to S143).

Subsequently, the tuned analog channel is displayed as a sub-screen of the PIP to watch a broadcast (S144).

On the other hand, in the case of searching the system information database (S150), as shown in FIG. 3, the program of the transmission error channel is searched through the system information database (S151).

The system information database includes a channel name of each channel, a program name currently being broadcast on the channel, information on subchannels for the same program, start and end times of the same program for each subchannel, and the like.

For example, assuming that a transmission error channel is 7ch, as shown in FIG. 5, the system information database includes program 'mermaid princess' information currently broadcasting on transmission error channel 7ch and information on each subchannel of the same program 'mermaid princess'. (7-1,2,3,4), start time (18:00, 18:02, 18:04, 18:06) and end time information (not shown) of the program 'The Little Mermaid' for each subchannel Stored.

After the above search, after checking whether or not there are subchannels for the same program, it terminates if there is no subchannel, and if there is a subchannel, whether each subchannel is on the basis of the current time. It determines (S152, S153).

Subsequently, when each sub-channel is broadcast OFF, the program is terminated. When the broadcast is ON, the program start and end time of each channel being broadcast is extracted, and the elapsed time of reproduction of the program is calculated based on the current time (S154 and S155).

The calculation formula is as follows.

(Elapsed playback time) = (Current time)-(Program start time)

In this case, the UI screen before the calculation may be displayed as shown in FIG. 4.

That is, if the program of the transmission error channel is 'Prog A' and the elapsed time of this program is 'Passge Time A', the searched other channel program is 'Prog A1' and its start / end / elapsed time is Start Time A1 / End Time A1 / Passage Time A1. Current time is 'Ctime'. Various information is displayed.

As a result of the calculation, a program having a minimum playback elapsed time is selected closest to the current time, and digitally tuned the channel of the selected program to be displayed on the main screen of the PIP (S156).

In detail, referring to FIG. 5, when a transmission error occurs at 18:05 and a transmission error channel is 7ch, the program name that is being broadcasted at 7ch is searched through a system information database search. Accordingly, sub-channel information (7-1, 2, 3, 4) in which a program identical to the searched program name 'The Little Mermaid' is broadcasted, and start time information (18:00, 18:02, 18: 04, 18:06).

Then, based on the current time of 18:05, the time optimized for viewing the program, the broadcast ON status, and the start time of the sub channel program are compared to the state that the user is watching and the most optimized channel. In this case, it is preferable to select the 7-3 sub-channel having the smallest elapsed reproduction time among the channels being broadcast.

Then, as described above, if the respective broadcast program is displayed on the main screen of the PIP or the sub-screen of the PIP by searching a broadcasting station mapping table or a system information database, the user can arbitrarily input the housewife's switching key to the sub-screen of the PIP or the PIP. The screen is switched to the main screen (S160).

This is to maximize the user's viewing convenience by freely switching between the main picture of PIP and the sub picture of PIP, as well as searching the broadcasting station mapping table or system information database due to transmission error. This is to prevent the fear that the same program is displayed on the sub-screen in duplicate.

As described above, the digital broadcasting service providing method according to the present invention tunes and displays an analog channel of a corresponding broadcasting station on a sub screen of a PIP when a transmission error occurs while watching digital broadcasting, and searches for system information collected from a digital TV. By selecting other channels that broadcast the same program and displaying them on the main screen of the PIP, it can overcome transmission errors that may occur during broadcasting and provide stable digital broadcasting, and can find and provide the best contents among various contents on the digital TV itself. .

As described above, according to the present invention, when a user cannot watch a corresponding broadcast due to a transmission error while watching a digital broadcast, the digital broadcast is being viewed by searching for a channel serving the same broadcasting station or the same program and generating and displaying a sub-picture of the PIP. In addition to providing an optimal content by overcoming a transmission error that may occur, there is an effect of continuously watching a broadcast service by actively providing a broadcast service without a user changing a channel in order to find a corresponding broadcast.

Claims (5)

A first step of displaying a no-signal or banner on the main screen of the PIP and counting a time-out when a transmission error occurs while watching digital broadcasting; A second step of determining whether or not there is an analog signal for a corresponding transmission error channel by searching a broadcasting station mapping table after the counting time-out; A third step of selecting another subchannel broadcasting the same program of a corresponding transmission error channel by searching a system information database if timeout occurs after the counting; A fourth step of returning to the third step if there is no analog signal as a result of the determination in the second step, and performing analog tuning to display on the sub-screen of the PIP if the analog signal exists; And A fifth step of displaying the main screen of the PIP after tuning the selected subchannel through the third step; Digital broadcast service providing method when a transmission error occurs comprising a. The method of claim 1, After the fourth step or the fifth step, a sixth step of switching between the sub-screen of the PIP and the main screen of the PIP by a user's manipulation; Method of providing a digital broadcast service when a transmission error occurs further comprising a. The method of claim 1, The system information database A transmission error characterized in that a database includes information including a channel name of the transmission error channel, a program name currently being broadcast, another subchannel name having the same program as the program, and a start and end time of the program for each subchannel. Method of providing digital broadcasting service when it occurs. The method according to claim 1 or 3, The third step is Retrieving a current broadcast program of the transmission error channel through the system information database; Determining the presence or absence of another subchannel having the same program as the current broadcast program; If it is determined that there is no other subchannel, ending; and if there is another subchannel, checking whether each channel is on the basis of the current time; Extracting another subchannel on the air and extracting a program name, program start and end time information of the extracted subchannel; Calculating an elapsed playing time of a program broadcast in each subchannel by comparing the presence or absence of broadcasting of the other subchannels and a program start and end time based on the current time; And Selecting the most recently broadcast channel from the current time as a result of the calculation; Digital broadcast service providing method when a transmission error occurs, characterized in that it comprises a. The method of claim 4, wherein And the channel which is most recently broadcasted from the current time has the smallest elapsed reproduction time.

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