KR20050093451A - Method for editing the electronic program guide - Google Patents

Abstract

In the composite broadcast signal receiver capable of receiving both a DVB (Digital Video Broadcasting) broadcast signal and an ATSC (Advanced Television Systems Committee) broadcast signal, an EPG (Electronic Program Guide) provided by the ATSC and DVB methods is provided. Edit in the same format to create an integrated EPG.

The first demultiplexer section filters the stream of the DVB broadcast signal output from the DVB tuner / demodulator to extract DVB-SI information, and the second demultiplexer extracts the stream of the ATSC broadcast signal output from the ATSC tuner / demodulator. The ATSC-PSIP information is extracted by section filtering, the table of extracted DVB-SI information and the ATSC-PSIP information table are parsed by the controller in the same format, and the table parsed information is stored in memory to store the integrated EPG database. By using the database of the integrated EPG, the integrated EPG can be provided to the user by OSD signal. The DVB-SI and ATSC-PSIP information is converted into common components while building the integrated EPG database. To organize different EPG standards into common formats and components.

Description

Method for editing the Electronic Program Guide

The present invention provides a composite broadcast signal receiver capable of receiving both a DVB (Digital Video Broadcasting) broadcast signal and an ATSC (Advanced Television Systems Committee) broadcast signal, each of which is mixed with an ATSC and DVB broadcast signal. The present invention relates to a method of editing an EPG, which provides an integrated EPG to a user by editing an electronic program guide (hereinafter, abbreviated as 'EPG') provided in the same format.

With the development of digital technology, broadcasting media such as satellite broadcasting and terrestrial broadcasting are being converted to digital methods. In addition, as the broadcasting media are converted to digital methods, multi-channel and high quality are possible, and digital television broadcasting provides an EPG in addition to a function of providing a simple video signal and audio signal so that the user can watch the broadcast signal receiver. Viewers can obtain information on broadcast programs for each channel through the EPG, select and receive broadcast signals of channels desired to watch, and can also perform various functions such as reservation recording. .

In addition, the composite broadcast signal receiver capable of receiving and viewing all the broadcast signals of the heterogeneous broadcast media may provide convenience and economical benefits from the user's point of view.

Meanwhile, Korea Digital Satellite Broadcasting adopts DVB (Digital Video Broadcasting), and terrestrial broadcasting adopts Advanced Television Systems Committee (ATSC). The EPB of the DVB method conforms to the SI (Service Information) of the ETS 300 468 standard, and the EPG of the ATSC method conforms to the Program and System Information Protocol (PSIP) of the A65 standard. Have.

Therefore, the DVB-SI standard and the ATSC-PSIP protocol can be used to display the EPG on the display panel of a composite broadcast signal receiver capable of receiving both DVB-type digital broadcast signals and ATSC-type digital broadcast signals. According to the standard, they are provided differently, which may cause a lot of confusion and inconvenience to the user. Also, it is difficult to simultaneously display the DVB and ATSC EPGs. There were various problems, such as not being able to switch.

Therefore, an object of the present invention is to provide an EPG editing method capable of providing a single EPG to a user by constructing an integrated EPG database integrating the DVB-SI standard and the ATSC-PSIP standard.

Another object of the present invention is to provide an EPG editing method that enables a user to easily switch between DVB and ATSC broadcast media and to conveniently select a broadcast signal reception channel.

According to the EPG editing method of the present invention having the above object, the DVB-SI information is extracted by section filtering the stream of the received DVB method broadcast signal, and the ATSC-PSIP is performed by section filtering the stream of the received ATSC method broadcast signal. Extract the information, parse the table of extracted DVB-SI information and the table of ATSC-PSIP information in the same format, construct the integrated EPG database with the table parsed information, and build the integrated EPG database. It is possible to provide integrated EPG to users with OSD signal by building the database of integrated EPG while converting DVB-SI and ATSC-PSIP information into common components to convert different EPG standards into common formats and components. Systematize to have

Therefore, in the EPG editing method of the present invention, for a DVB broadcast signal, the SIT of the SI is parsed and a 'service id' is extracted and set as a major number, and the minor number is set as an invalid value. Determining the minor number as the channel number, extracting the channel name from the SDT, parsing the VCT of the PSIP for the ATSC-type broadcast signal, extracting the major and minor numbers as the channel number, extracting the channel name from the VCT, It also parses the event information table (EIT) from DVB-SI to extract current, next and scheduled events, extracts event names, event descriptions, start and airing times, and extracts extracted start and airing times to local time. After parsing the EIT and ETT in ATSC-PSIP, extract the scheduled event and extract the current and next event from the extracted schedule event. And, events and the further explanation, extracts the start time and the broadcast time, characterized by converting the start time and the broadcast time is extracted as the local time.

The major number extracted from the ATSC-PSIP is extended to 16 bits to have the same bit as the major number which is the 'service id' of the DVB-SI, and the current and next event extraction in the scheduled event of the ATSC-PSIP is STT. Parse a system time table to extract the current time, extract the start time and end time of one event from the schedule event, compare the extracted current time with the start time and end time, and compare the start time with the current time. If it is not earlier than the time or if the current time is not earlier than the end time, the start time and end time of the next event are extracted and compared with the current time. As a result of the comparison, the start time is earlier than the current time, and the current time is the end time. If it is faster, the event is determined to be the current event, and the next event is determined to be the next event. It features.

Hereinafter, a method of editing an electronic program guide of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a composite broadcast signal receiver to which the editing method of the present invention is applied. As shown therein, a DVB type tuner / demodulator 100 for tuning and demodulating a broadcast signal of a DVB method, an ATSC type tuner / demodulator 110 for tuning and demodulating an ATSC type broadcast signal, and the DVB type tuner / A first demultiplexer 120 that separates the AV stream and the DVB-SI information from the output signal of the demodulator 100, and an agent that separates the AV stream and the ATSC-PSIP information from the output signal of the ATSC type tuner / demodulator 110; A switching unit 140 for selectively switching a first demultiplexer 130, an AV stream separated from the first and second demultiplexers 120 and 130, and the first and second demultiplexers 120 and 130. Memory 150 for storing the DVB-SI information and ATSC-PSIP information separated from the control unit, and controls the switching operation of the switching unit 140, DVB-SI information and ATSC-PSIP stored in the memory 150 Save the edited EPG information and save the OSD signal according to the EPG. Control unit 160 for controlling the life, the OSD unit 170 for generating the OSD signal of the EPG under the control of the controller 160, and the AV stream switched by the switching unit 140 to process the AV signal In addition to the output, the AV signal processor 180 for mixing the OSD signal of the OSD unit 170 with the video signal and output.

In the composite broadcast signal receiver configured as described above, the DVB type tuner / demodulator 100 receives the DVB type broadcast signal, demodulates it, and outputs a stream of the DVB type broadcast signal to the first demultiplexer 120. The demodulator 110 receives the ATSC broadcast signal, demodulates it, and outputs a stream of the ATSC broadcast signal to the second demultiplexer 130.

Then, the first demultiplexer 120 separates the AV stream and the DVB-SI information from the stream of the DVB method broadcast signal output from the DVB method tuner / demodulator 100, and the second demultiplexer 130 is an ATSC method tuner / demodulator. The AV stream and the ATSC-PSIP information are separated from the stream of the ATSC broadcast signal output by the 110, and the AV stream is output to the switching unit 140, and the DVB-SI information and the ATSC-PSIP information are stored in the memory 150. Save it.

In this state, the switching unit 140 selects an AV stream separated by the first or second demultiplexer 120 and 130 under the control of the controller 160, and the selected AV stream is the AV signal processor 180. After processing in the AV signal is output, the user can watch a broadcast signal of a predetermined DVB method or an ATSC method.

In addition, the controller 160 edits the DVB-SI information and the ATSC-PSIP information stored in the memory 150 according to the editing method of the present invention, converts the DVB-SI information and the ATSC-PSIP information into the same format, and stores the integrated EPG database in the memory 150. When a user command requesting an EPG is input, the edited information, that is, the EPG, is read from the integrated EPG database of the memory 150, and the OSD unit is controlled by controlling the OSD unit 170 according to the read EPG. The 170 generates an OSD signal according to the EPG, and the generated OSD signal is mixed with the video signal processed by the AV signal processor 180 and then displayed on the output and the display panel so that the user can check the EPG.

In general, there are three types of EPG: current program guide, next program guide, and program schedule (schedule) guide, depending on the display method.The elements displayed in each scheme are channel number, channel name, start time, broadcast time, and event. Name and event description.

In the editing method of the present invention, as shown in FIG. 2, the first demultiplexer 120 filters the stream of the DVB broadcast signal output from the DVB broadcast tuner / demodulator 100 to extract DVB-SI information. The controller 160 parses the extracted tables of the DVB-SI information, and the second demultiplexer 130 filters the stream of the ATSC broadcast signal output from the ATSC tuner / demodulator 110. At step 220, the ATSC-PSIP information is extracted, the controller 160 parses the table of the extracted ATSC-PSIP information, and the information parsed by the table 210 and 230 is stored in the memory 150. The database 240 of the integrated EPG is constructed, and the integrated EPG is provided to the user as an OSD signal by using the database 240 of the integrated EPG.

The editing method of the present invention converts DVB-SI and ATSC-PSIP information into common components while constructing the database 240 of the integrated EPG. The database 240 of the integrated EPG converts different EPG standards into a common format. Systematize to have and elements.

For example, as shown in FIG. 3, the service information list 300 and the event information list 310 are organized. The service information list 300 includes channel numbers such as '9-1', '11 -1 'and' 100 ', and channel names such as' KBS D-1 ', MBC DTV', and 'SKY Choice'. . The event information list 310 is divided into a current program and a next program, and the current program and the next program include a broadcast start time, a broadcast time, a title of an event, and an additional description. Here, an event is a term used in the DVB method and the ATSC method, and is a separate program separated by time, for example, 9 o'clock news, sports news, and 100 minute discussion.

4 is a signal flow diagram showing an editing method of the present invention. As shown in FIG. 4, in step 400, the controller 160 determines whether the information stored in the memory 150 is DVB-SI information or ATSC-PSIP information. If the determination result of the step 400 is DVB-SI information, in step 402, the service description table (SDT) is parsed from the DVB-SI information to obtain a section having 'PID = 0x11' and 'table id = 0x42'. Extract.

In the next step 404, the service ID is extracted from the parsed SDT, and the major number is set in step 406, and the minor number is set to an invalid value in step 408. In step 410, the channel number is stored. That is, the set major number and minor number are connected by a dash '-' and stored as a channel number. In the next step 412, the channel name is extracted from the 'service descriptor (tag = 0x48)' included in the SDT of the DVB-SI information and stored.

If the determination result of the step 400 is the ATSC-PSIP information, the controller 160 parses the VCT (Virtual Channel Table) from the ATSC-PSIP information in step 414, 'PID = 0x1FFB' and 'table id'. Extract the section with = 0xC8 '.

In the next step 416, the major number of the channel number is extracted from the parsed VCT and expanded to 16 bits in step 418, the minor number is extracted in step 420, and the extracted major number and minor in step 422 The channel number is stored, and the channel name is extracted and stored using the short name of the VCT in step 424.

That is, in the editing method of the present invention, the channel number is edited based on the channel number of the ATSC-PSIP information formed of two numerical groups. That is, in the digital broadcasting, in the ATSC-PSIP information, a channel is composed of two number groups having two major and minor numbers, and the major and minor numbers are connected by a dash '-' in the present invention. According to the channel number consisting of the two groups of numbers.

To this end, in the editing method of the present invention, the major number is generated as 'service_id' of the SDT in the DVB-SI information, the minor number is treated as an invalid value, and the ATSC-PSIP information is generated by combining the major and minor numbers of the VCT. In addition, a dash '-' is inserted between the major number and the minor number and stored in the database 240 of the integrated EPG. In this case, since the major number of the service_id of the SDT in the DVB-SI information is 16 bits, and the major number of the VCT is 10 bits in the ATSC-PSIP information, the major number of the VCT is extended to 16 bits so that the DVB-SI information and ATSC- The major numbers in the PSIP information should have the same 16 bits. The upper 6 bits are all set to '0', and the lower 10 bits are expanded to 16 bits as the major number.

According to the editing method of the present invention, the DVB and ATSC channels are not overlapped with each other, and the DVB and ATSC modes can be distinguished through the presence or absence of a minor channel.

In the editing method of the present invention, the channel name is extracted from the 'service descriptor (tag = 0x48)' included in the SDT of the DVB-SI information, and the ATSC-PSIP information is stored using the short name of the VCT. .

5 is a signal flow diagram illustrating a process of extracting event information in the editing method of the present invention. As shown therein, in step 500, it is determined whether the information is DVB-SI information or ATSC-PSIP information.

If the determination result of the step 500 is DVB-SI information, the control unit 160 parses an event information table (EIT) in step 502, such as 'PID = 0x12' and 'table id = 0x4E, 0x50 ~ 0x5F'. Extract

In the next step 504, the present event, following event, and schedule event are extracted and stored in the memory 150 using the information extracted from the EIT. That is, the DVB-SI consists of three stages of the current event, the next event, and the schedule event, and extracts and stores the current event, the next event, and the schedule event of the three stages. Here, the schedule event of the DVB is segmented every three hours from 0 o'clock of the day, and 'table_id' increases with time.

In the next step 506, the event name of 'event_name_char' of the 'short event descriptor (tag = 0x4D)' included in the EIT is extracted and stored in the memory 150, and in step 508 the 'short event' included in the EIT The event additional description of 'text_char' of descriptor (tag = 0x4D) 'is extracted and stored in the memory 150. In step 510, the start time and the broadcast time of' start_time 'and' duration field 'of the EIT are extracted. .

The extracted start time and the airing time are UTC (Universal Time Coordinated) time, and the controller 160 converts the start time and the airing time into local time, that is, the time used in the Republic of Korea in step 512, and stores the memory 150. ).

If the determination result of the step 500 is ATSC-PSIP information, the controller 160 parses an event information table (EIT) and an extended text table (ETT) at step 514 and designates it in a master guide table (MGT). 'PID' and '0xCB' and '0xCC', which are table ids, are extracted from EIT and ETT, respectively.

In addition, the schedule event in the ATSC is transmitted to the table at an interval of 3 hours from the current time, and the PID is allocated to the MGT by binding the events of 3 hours. The controller 160 extracts the schedule event in step 516. The memory 150 stores the same.

In the next step 518, the current event and the next event are extracted from the extracted schedule event and stored in the memory 150.

Extracting the current event and the next event of the step 518, parsing the System Time Table (STT) in step 600, as shown in Figure 6, and the current from the 'system_time' of the STT in step 602 Extract the time.

In the next step 604, the start time and the end time of one event are extracted from the schedule event, the start time and the present time extracted in step 606 are compared, and the current time and the end time are compared in step 608. do.

If the start time is not earlier than the current time or the current time is not earlier than the end time in step 608, the event is not the current event and the control unit 160 performs step 610. In step 606, the start time and end time of the next event are extracted, and the process returns to step 606 to compare the start time and the current time, and the step 608 compares the current time and the end time.

If the start time is earlier than the current time in step 606 and the current time is earlier than the end time in step 608, the controller 160 determines the event as the current event and memory 150 in step 612. ), The next event following the determined current event is determined as the next event and stored in the memory 150.

When the current event and the next event are determined in the ATSC-PSIP as described above, the controller 160 extracts the event name in step 520 and stores the event name in the memory 150. That is, a string is extracted from the 'title_text' field of the EIT and stored in the memory 150 as an event name.

In the next step 522, the controller 160 extracts the 'extended_text_message' of the ETT and stores it in the memory 150 as a string of the event additional description, and in step 524 start time 'start_time' and 'length_in_seconds' of the EIT. Extract to airing time.

The extracted start time and airing time of the ATSC method are in the form of two-way time transfer (GPS) seconds elapsed from midnight January 6, 1980, and the controller 160 sets the start time and the airing time in step 526. That is, the time is converted into the time of the format used in the Republic of Korea and stored in the memory 150.

In this way, the service information and the event information of the same format stored in the memory 150 is to build the integrated EPG database 240, the control unit 160 according to the service information and event information stored in the integrated EPG database 240 ) Controls the OSD unit 170 to generate an OSD signal and provide an integrated EPG of the DVB method and the ATSC method.

On the other hand, while the present invention has been shown and described with respect to specific preferred embodiments, various modifications and changes of the present invention without departing from the spirit or field of the invention provided by the claims below It can be easily understood by those skilled in the art.

As described above, the present invention can provide a single EPG by integrating different types of DVB-SI and ATSC-PSIP in an integrated broadcast signal receiver capable of receiving both satellite and terrestrial broadcast signals. The program guide and channel switching can be used without causing confusion due to different standards between broadcast media.In addition, the program guide developer can implement a general-purpose EPG that is not limited to a specific broadcast standard to reduce development time and costs. There is a saving effect.

1 is a block diagram showing the configuration of a composite broadcast signal receiver to which the editing method of the present invention is applied.

2 is a view for explaining the concept of the editing method of the present invention.

3 is a view showing an example of the configuration of an integrated EPG database constructed according to the editing method of the present invention.

4 is a signal flow diagram showing a process of extracting service information in the editing method of the present invention.

5 is a signal flow diagram showing a process of extracting event information in the editing method of the present invention.

6 is a signal flow diagram showing the current and next event extraction process of FIG.

Explanation of symbols on the main parts of the drawings

100: DVB type tuner / demodulator 110: ATSC type tuner / demodulator

120: first demultiplexer 130: second demultiplexer

140: switching unit 150: memory

160: control unit 170: OSD (On Screen Display) unit

180: AV signal processing unit

Claims (3)

A tenth process of determining whether a memory of service information (SIB) of a digital video broadcasting (DVB) method or a program and system information protocol (PSIP) of an advanced television systems committee (ATSC) method is stored in a memory; When the SIB of the DVB method is stored in the memory as a result of the determination of the tenth step, the service description table (SDT) is parsed and the 'service id' is extracted and set as a major number, and the minor number is set as an invalid value. Determining a channel number and extracting a channel name from the SDT; After the 20th process, the current, next and scheduled events are extracted by parsing an event information table (EIT), an event name, an event additional description, a start time and a broadcast time are extracted, and the extracted start time and broadcast time are local time. 30th process of converting to; When the PSSC of the ATSC method is stored in the memory as a result of the determination of the tenth step, the VCT (Virtual Channel Table) is parsed to extract the major number and the minor number as the channel number, and the channel name is extracted from the VCT. process; And After the 40th process, EIT (Event Information Table) and ETT (Extended Text Table) are parsed to extract the schedule event, and the current and next event is extracted from the extracted schedule event. A method of editing an electronic program guide comprising a process of extracting time and extracting event information that converts the extracted start time and broadcast time into local time. The method of claim 1, wherein the major number of the 40th process is; The method of editing an electronic program guide, wherein the extension is made into 16 bits and the same bit as the major number of the 'service id' of the DVB system SI. The method of claim 1, wherein the current and next event extraction of the fiftyth process is performed; Extracting a current time by parsing a system time table (STT), extracting a start time and an end time of one event from the schedule event; A fifty-second step of comparing a current time extracted from the fifty-first step with a start time and an end time; Comparing the current time with the start time and the end time by extracting a start time and an end time of a next event when the start time is not earlier than the current time or the current time is not earlier than the end time. A fifty-third step of repeating an operation; And Step 54, when the start time is earlier than the current time and the current time is earlier than the end time as a result of the comparison of the 52nd or 23rd process, determining the event as the current event and determining the next event as the next event Editing method of the electronic program guide, characterized in that consisting of.