KR100760092B1 - Digital multimedia receiver and method for recording broadcasting program thereof - Google Patents

Abstract

The present invention relates to a digital multimedia receiver and a method for recording a broadcast program thereof. The present invention relates to a digital multimedia receiver and a broadcast type of a broadcast program to be recorded and a trigger type of an advertisement content. If is received, recording is performed. If the same program number as the program number of the advertisement content is received, the recording is stopped. Therefore, the advertisement portion is not recorded, and only the portion related to the present broadcast can be recorded.

Trigger, time, recording, advertisement, broadcast, content, program, number

Description

Digital multimedia receiver and method for recording broadcasting program

1 is a diagram illustrating a digital multimedia receiver according to the present invention;

2A and 2B are diagrams for explaining FIG (0/16) used in the present invention;

3a to 3c are views for explaining the trigger type used in the present invention,

4 is a view for explaining a broadcast recording operation of the present invention as an example;

5 is a view showing a broadcast program recording method of a digital multimedia receiver according to the present invention;

Explanation of symbols on the main parts of the drawings

100: preprocessor 101: tuner

102: OFDM demodulator 110: demultiplexer

111: MSC demultiplexer 112: FIC demultiplexer

113: RS decoder 120: MOT decoder

130: EPG engine 140: EPG DB

150: control unit 160: recorder

The present invention relates to a digital multimedia receiver and a broadcast program recording method thereof in which an advertisement portion is not recorded and only substantial broadcast content can be recorded.

Digital Multimedia Broadcasting (DMB) extends the standard DAB (Digital Audio Broadcasting) standard, which provides clear audio quality information, traffic information, and web data, and provides video information.

Certain digital multimedia receivers that receive such DMB broadcasts have the following problems because a conventional broadcast program is composed of one set containing a portion containing advertisement content and one portion containing substantial broadcast content.

For example, if the program is set to record a broadcast program at 10 o'clock, recording starts from 10 o'clock in accordance with the time, and there is a problem in that even a portion of the advertisement which may be unnecessary is recorded.

The present invention was developed to solve the above-mentioned problems, and an object of the present invention is to provide a digital multimedia receiver and a broadcast program recording method thereof in which an advertisement portion is not recorded and only substantial broadcast contents can be recorded. .

Broadcast program recording method of the digital multimedia receiver of the present invention for this purpose,

It is characterized by having each of the advertisement content constituting any one broadcast program and the trigger type (trigger type) of the broadcast content.

When a predetermined broadcast program is designated for recording, after analyzing a trigger type of the broadcast content matched with the corresponding broadcast program, the program number is confirmed, and the same program number as the checked program number is received on the channel broadcasting the broadcast content. If the recording is characterized in that the recording.

The preferred structure includes parsing the advertisement content and the trigger type of the broadcast content from the EPG information received from the outside and storing the broadcast content for each broadcast program; Identifying a service ID and a program number encrypted in each trigger type by finding and interpreting an advertisement content of a designated recording program and a trigger type of the broadcast content according to a user's key operation; And recording the present broadcast content of the corresponding channel when the same program number as the confirmed program number of the present broadcast content is received in the channel indicated by the service ID.

In the recording state of the present broadcast content, when the same program number as the program number of the advertisement content is received through the channel for broadcasting the present broadcast content, recording is stopped.

The trigger type of the advertisement content and the broadcast content is an 8-digit string composed of numbers or letters selected from 0-9, a-f or A-F.

Digital multimedia receiver of the present invention according to another object,

It has a preprocessor, an MSC demultiplexer, an FIC demultiplexer, and an RS decoder that receives and demodulates a broadcast signal through an antenna. A demultiplexer for outputting a program number recorded in the subfield, a MOT decoder for decoding a FIC symbol output by the demultiplexer and outputting a MOT object, and a trigger type of advertisement content and broadcast content in a MOT object output by the MOT decoder. an EPG engine for parsing and storing an operation for each broadcast program, an EPG database for storing the trigger type of the parsed advertisement content and broadcast content for each broadcast program under the control of the EPG engine, and a broadcast program designated by an external recording. Advertising content and the trigger type of the broadcast content in the EPG database A control unit which finds and interprets a service ID and a program number, and outputs different recording control signals depending on whether the program number of a predetermined FIG (0/16) input by the demultiplexer and the program number of the checked contents are the same; And a recorder for selectively recording a TS stream output by the demultiplexer according to different recording control signals output by the controller.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail.

1 is a diagram illustrating a digital multimedia receiver according to the present invention.

The digital multimedia receiver shown in FIG. 1 is largely composed of a preprocessor 100 composed of a tuner 101 and an OFDM demodulator 102, an MSC demultiplexer 111, an FIC demultiplexer 112, and an RS decoder 113. The demultiplexer 110, the MOT decoder 120, the EPG engine 130, the EPG database 140, the controller 150, and the recorder 160 are configured.

The preprocessor 100 receives and demodulates a broadcast signal, and includes a tuner 101 and an orthogonal frequency division multiplex (OFDM) demodulator 102.

The tuner 101 receives a broadcast signal transmitted from the outside through an antenna and outputs it to the OFDM demodulator 102.

The OFDM demodulator 102 performs OFDM demodulation on the broadcast signal output from the tuner 101 and rearranges the frequency deinterleaved OFDM symbols in units of a common interleaved frame (CIF).

The demultiplexer 110 demultiplexes the OFDM symbols output by the preprocessor 100, and includes an MSC demultiplexer 111, an FIC demultiplexer 112, and an RS decoder 113.

The MSC demultiplexer 111 and the FIC demultiplexer 112 demultiplex the OFDM symbols output by the OFDM demodulator 102 to output the FIC (Fast Information Channel) symbols and the MSC (Main Service Channel) symbols, respectively.

The RS decoder 113 outputs a TS stream by decoding the MSC symbol output by the MSC demultiplexer 111.

The MOT decoder 120 receives an MSC symbol output from the MSC demultiplexer 111 and performs MOT decoding.

The EPG engine 130 parses the MOT decoded data into SI (Service Information) information, PI (Program Information), etc. using an embedded XML (eXtensible Markup Language) parser, and inserts the EPG into the EPG database 140. To organize information.

In particular, in the MOT decoded data, together with information such as channel information, program information, start and end time of the program, and the like, the advertisement content according to the present invention and the trigger type of the broadcast content are parsed, respectively, for the broadcast program. Each is stored in the EPG database 140.

The controller 150 searches for and analyzes the advertisement content of the broadcast program to be recorded and the trigger type of the broadcast content according to a recording command input from the outside in the EPG database 140, and interprets the service ID and the program number encrypted in the trigger type. Check it.

Then, the FIC demultiplexer 112 is controlled to receive a program number recorded in FIG (0/16) associated with the service ID therefrom, and the received program number, the advertisement content, and the program number of the broadcast content. Different control signals are output depending on whether

The recorder 160 selectively records a TS stream related to the present broadcast content output from the demultiplexer 110 according to different control signals output from the controller 150.

The broadcast program recording operation of the digital multimedia receiver according to the present invention will be described with reference to this structure.

First, the EPG engine 130 parses the advertisement content and the trigger type of the broadcast content from the MOT decoded data by the MOT decoder 120 using the built-in XML parser and broadcasts the program to the EPG database 140. Save it very much.

In this state, when a recording command is input, the controller 150 finds and interprets the advertisement content of the designated broadcast program and the trigger type of the broadcast content in the EPG database 140, and encodes the service ID encrypted in the trigger type. And program number.

Next, the FIC demultiplexer 112 controls the FIG (0/16) associated with the service ID identified from the plurality of FIG (0/16) included in the FIC symbol input by the OFDM demodulator 102 under the control of the controller 150. Monitor and continuously extract the program number recorded therein and input it to the controller 150.

The FIG (0/16) includes a service ID indicating a channel for broadcasting a predetermined broadcast content and a program number indicating a broadcast date and time thereof, and is continuously transmitted in real time during the time when the predetermined broadcast content is actually broadcasted. .

On the other hand, if the FIC demultiplexer 112 inputs the program number extracted from FIG (0/16) associated with the service ID (SID) to the controller 150, the controller 150 inputs the program number and the checked advertisement. The content and the program number of the broadcast content are compared and different control signals are output to the recorder 160 according to the result of the comparison.

That is, as a result of comparison, when the program number input by the FIC demultiplexer 112 is the same as the program number of the broadcast content, a control signal for recording is output to the recorder 160.

On the other hand, if the program number input by the FIC demultiplexer 112 is the same as the program number of the advertisement content, the control signal not to perform recording is output to the recorder 160.

In addition, the recorder 160 receives a control signal output from the controller 150 and, when the received control signal is a control signal for recording, receives the TS stream output from the demultiplexer 110. It is stored in a hard disk, etc., but on the other hand, if the received control signal is a control signal not to perform recording, the demultiplexer 110 does not receive the TS stream output.

As a result, the digital multimedia receiver according to the present invention can record only the portion substantially related to the present broadcast without recording the advertisement portion.

2A illustrates a DMB transmission frame including FIG (0/16).

The transport frame is composed of a block of a synchronization channel, a fast information channel (FIC), and a main service channel (MSC). In particular, the FIC includes information necessary for the digital multimedia receiver to tune a broadcast program or supplementary information about the broadcast program.

The FIC is composed of three data blocks called fast information blocks (FIBs), and each FIB is composed of a plurality of FIG (Fast Information Groups). Among the plurality of FIGs, FIG (0/16) related to the present invention (Type 0 field for extension16) is included.

The FIG (0/16) includes a program number (PNum), a service ID (Service IDentifier) (SID), and the like. Let me know

The program number is encrypted with a 16-bit code to indicate broadcast date / time information of any one broadcast content as days: hours: minutes, and the service ID is encrypted with a 16-bit code so that any one channel information such as KBS1, KBS2, MBC, etc. Indicates.

Since the present invention distinguishes the advertisement content from the actual broadcast content, it is required to allocate a program number and a service ID for each advertisement content and each broadcast content, and transmit them through FIG (0/16).

FIG. 2B is a more detailed view of FIG (0/16) of FIG. 2A.

The FIG (0/16) is a service ID (Service IDentifier: SID), a program number (PNum), a reserved for future addition (Rfa), a reserved for future use (Rfu), a continuation flag, It consists of Update flag, New SID (New Service IDentifier), and New PNum (New Program Number).

The service ID is encrypted with a 16-bit code to indicate any channel information such as KBS1, KBS2, MBC, or the like.

The program number is encrypted with a 16-bit code to represent broadcast date / time information of any one broadcast content in days: hours: minutes.

The continuation flag is used for emergency breaking and is a flag value of '0' or '1' indicating that a program that was broadcasting before the breaking news will be broadcast soon after the breaking news.

The update flag is a flag value of '0' or '1' used for extended broadcasting on another channel (for example, KBS1-> KBS2).

The New PNum (New Program Number) and the New SID (New Service IDentifier) indicate a program number indicating the completion date of providing broadcast content currently being broadcast and a service ID (New SID) of a channel to which the broadcast content is to be extended.

FIG (0/16) containing such information includes a service ID indicating a channel on which the broadcast content is actually broadcasted and a program number indicating the broadcast date and time at the time when the predetermined broadcast content is actually broadcasted. Will continue to be sent in real time.

3A to 3C are diagrams for explaining a trigger type used in the present invention, wherein the trigger type is provided from any one of EPG information.

FIG. 3A illustrates a typical XML EPG document, FIG. 3B illustrates a portion where a trigger type is located in the XML document of FIG. 3A, and FIG. 3C defines a trigger type of FIG. 3B.

First, as shown in FIG. 3A, a typical XML EPG document is largely composed of an SI (Service Information) element and an epg element.

The SI element contains various types of information related to the SI information constituting the EPG information. Below, the SI element includes ensemble information, frequency information of the ensemble, and ID and genre of each service constituting the ensemble. Include.

In addition, the epg element contains various kinds of information related to PI (Program Information) and GI (Group Information) information constituting the EPG information, in particular, the schedule information and the start and end of the program under the epg element related to PI information Time information, detailed information of a broadcast program, and ID information of a channel to which each broadcast program belongs.

FIG. 3B illustrates a portion where a trigger type is located in the XML specification of FIG. 3A, and the trigger type is included in an attribute of a bearer element located below a location of the epg element.

The trigger type is binary encoded and received by the digital multimedia receiver in the form of a multimedia object transfer (MOT) object file. Then, it is extracted from the decoded MOT object file received by the digital multimedia receiver and stored in each EPG database or the like.

3c defines the trigger type of FIG. 3b.

The trigger type is an 8-character string consisting of numbers or letters selected from 0-9, a-f or A-F, and may be defined as 'c2213ac1', for example.

In addition, the upper 4 digits of the 8-digit string may be defined as the service ID and the lower 4 digits as the program number.

Unlike the trigger type, which is set to have one for each broadcast program, the trigger type is set to have one for each advertisement content and one for each broadcast content according to the present invention.

4 is provided to explain the present invention in more detail.

Here, the 'morning yard' with the program number 'PNum' '200900' is scheduled to be broadcast at 09:00 in 'CH7' according to the EPG information. The 'morning yard' is set as a broadcast program to be recorded.

When the 'morning yard' is designated as the broadcast program to be recorded, the service ID encoded in each trigger type by analyzing the advertising content matched with the broadcasting program of the 'morning yard' and the trigger type of the broadcasting content, respectively (Fig. 6). , Check the 'CH7') and program number.

With this operation completed, the FIG (0/16) associated with the service ID (here, 'CH7') is monitored among the plurality of FIG (0/16) received, and the program number recorded therein is extracted and extracted. When the program number is the same as the set program number '200900' of the broadcast content, recording of the broadcast content is performed.

During the recording of the broadcast content like this, the program number extracted from the FIG (0/16) is extracted, and if the extracted program number is the same as the program number '200955' of the commercial content, Stop recording of this broadcast content.

As a result, only the main broadcast associated with the 'morning yard' is recorded, and the advertising portion is not recorded.

5 is a diagram illustrating a broadcast program recording method of the digital multimedia receiver according to the present invention as an example.

In the recording method according to the present invention, first, the advertisement content and the trigger type of the broadcast content are parsed from the EPG information received from the outside (S500) and stored in the EPG database for each broadcast program (S501).

In this state, a recording command is input (S502), and if any broadcast program is designated to be recorded according to the input recording command, the EPG database is searched (S503).

In addition, the service content and the program number of the advertisement content encoded in the trigger type and the service of the broadcast content are found by analyzing the advertisement content matched with the designated recording program and the trigger type of the broadcast content (S504). The ID and the program number are checked (S505).

For example, as described above, when each trigger type of the advertisement content and the broadcast content is an 8-digit string, the service ID can be identified by decoding the upper 4 digits of the 8-digit string. By decoding the lower four digits, the program number can be checked separately.

Next, after confirming the advertising content of the recorded broadcast program, the service ID and the program number of the broadcast program according to step S505, respectively, FIG (0/16) received in real time by the digital multimedia receiver is monitored (S506). ).

The FIG (0/16) having the same service ID as the service ID is found among the FIG (0/16) monitored in step S506, and the program number thereof is extracted.

Thus, the extracted program number and the program number of the advertisement content of the designated recording program identified in step S505 are compared with the program number of the broadcast content (S507), and recording is selectively performed according to the comparison result (S507). S508).

That is, the extracted program number is compared with the program number of the advertisement content of the designated recording program identified in step S505 and the program number of the broadcast content, and the extracted program number is the same as the confirmed program number of the broadcast content. The broadcast content is recorded (S508).

Then, while recording the present broadcast content in step S508, the FIG (0/16) associated with the service ID is continuously monitored (S509), and the program number recorded therein is extracted, and the extracted program number and step The program numbers of the advertisement contents confirmed in S505 are compared (S510). If the two program numbers are the same, recording of the broadcast content is stopped (S511).

As described above, when a predetermined broadcast program is designated to record, the present invention analyzes a trigger type of broadcast content matched to the corresponding broadcast program, checks the program number, and then transmits the same program number to a channel that broadcasts the broadcast content. If received, recording is performed, and in the state of recording the broadcast content, if the same program number as the program number of the advertisement content is received through the channel broadcasting the broadcast content, the recording is stopped, and thus the advertisement portion is not recorded. Only the actual main broadcast can be recorded.

As described in detail above, in the present invention, the digital multimedia receiver and the broadcast program recording method thereof may record only the portion related to the present broadcast without recording the advertisement portion.

Claims (4)

Parsing a trigger type set for each advertisement content and the present broadcast content from EPG information received from the outside and storing the trigger type for each broadcast program; Identifying and interpreting advertising content of the designated broadcast program and each trigger type of the broadcast content according to a user key operation to identify a service ID and a program number encrypted in the trigger type; And When the same program number as the program number of the checked broadcast content is received through the channel indicated by the service ID, the broadcast content of the corresponding channel is excluded in the state of excluding an advertisement content having a program number different from the program number of the broadcast content. And recording only the broadcast program recording method of the digital multimedia receiver. The method of claim 1, And recording the present broadcast content of the channel indicated by the service ID when the program number equal to the program number of the advertisement content is received in the corresponding channel. Broadcasting program recording method of digital multimedia receiver. The method of claim 1, The trigger type (trigger type) of the advertising content and broadcast content, The pattern value is a broadcast program recording method of a digital multimedia receiver, characterized in that the string of 8 digits consisting of numbers or letters selected from 0-9, a-f or A-F. A preprocessor receiving and demodulating a broadcast signal through an antenna; A demultiplexer having a demultiplexer and an RS decoder and demultiplexing a broadcast stream in the demodulated broadcast signal to output a program number recorded in the FIC symbol, the TS stream, and FIG (0/16); A MOT decoder which decodes the FIC symbol output by the demultiplexer and outputs a MOT object; An EPG engine for controlling an operation of parsing a trigger type of an advertisement content and a broadcast content in the MOT object output by the MOT decoder and storing the trigger type for each broadcast program; An EPG database for storing the parsed advertisement content and the trigger type of the broadcast content for each broadcast program under the control of the EPG engine; The program content of the predetermined FIG (0/16) inputted by the demultiplexer and the program number are determined by finding and interpreting the advertisement content of the broadcast program and the trigger type of the broadcast content recorded from the outside in the EPG database. A control unit which outputs different recording control signals depending on whether or not the checked content is equal to the program number; And And a recorder for selectively recording a TS stream output by the demultiplexer according to different recording control signals output by the controller.

Images