KR20100044967A - An apparatus for displaying and method for pre-recoding broadcasting program - Google Patents

Abstract

PURPOSE: An apparatus for displaying and a method for a pre-recoding broadcasting program are provided to increase the reliability on a timer recording function by performing a recording operation for the corresponding broadcasting program. CONSTITUTION: A PSIP(Program and System Information Protocol) decoder(150) decodes PSIP data, and a system manager(170) controls a timer recording operation of a selected program through the information in the PSIP data. A storage unit stores the recorded program, and the system manager determines the continuation or stopping of a recording operation through the PID(Program IDentification) of a received transport packet.

Description

An apparatus for displaying and method for pre-recoding broadcasting program

The present invention relates to a device capable of reserved recording of a broadcast program, and to a method of allowing a broadcast program to be normally recorded even when a broadcast program broadcast time of a reserved recording target is changed, and a video display device using the same. do.

In general, an image display device is a device for displaying image information by using a screen, and a representative device is a television system for receiving a radio wave of a broadcasting station and displaying an image, and a hard disk built in a set-top box or a television body. And a personal video recorder (PVR) for recording and playing back information.

In conventional analog television broadcasting, video signals to be transmitted are modulated by AM or FM and transmitted through radio waves or cables. With the recent development of digital technologies such as digital image compression and digital modulation and demodulation, the standardization of digital television (DTV) broadcasting is rapidly progressing, and existing terrestrial, satellite, and cable broadcasting are based on MPEG It is digitizing.

As such, digital broadcasting can provide higher quality of service than analog service according to the development of digital video / audio compression technology and digital transmission technology, and can transmit multiple broadcast programs in the same bandwidth, digital communication media and digital storage. There is an advantage in that interoperability with the media can be improved.

The transport stream structure of the digital transmission standard is briefly described. The transport stream (TS) of the transport standard includes audio signals (AC3 Audio), video signals (MPEG-2 Video), and control signals (MPEG-2 Control). And PSIP (Program and System Information Protocol) data.

In digital broadcasting using a transport stream of such a digital transmission standard, a plurality of broadcast programs encoded on the basis of MPEG are multiplexed and transmitted in the form of a transport stream (TS), which is installed on the receiving side. A plurality of broadcast programs received at the set-top box and included in the transport stream are demultiplexed so that only one desired broadcast program is selected.

The decoder decodes the selected broadcast program and delivers the original audio and video signal to an image display device such as a television. The image display device not only outputs the received broadcast signal to the screen but also has a function of storing, editing, and playing the received broadcast signal in a storage medium.

In addition, the recording function of the video display device includes a reservation recording method using an EPG (Electronic Program Guide) included in PSIP information of terrestrial broadcasting, a manual reservation recording method without an EPG, and a program being watched directly. There is direct recording method to record.

The EPG refers to a broadcast program schedule displayed on a screen of a digital TV through data broadcasting using an empty frequency band or a spare channel. The viewer can easily grasp which program is broadcasted on which station and on which day after a week by operating the EPG with a remote controller.

If a desired program name is specified, more detailed program information can be obtained than in the schedule table. Depending on the service, the program name can be reserved from the EPG screen.

However, the conventional reservation recording is performed using the broadcast time of the broadcast program to be recorded, and the operation of recording the broadcast program within the corresponding time is performed by using the start time and the end time of the broadcast program included in the EPG.

For this reason, when the broadcast time of the recording target is extended or changed due to a broadcast station, there is a problem that the broadcast program is not recorded correctly.

For example, when a soccer game is reserved for recording, when the program is extended by the broadcasting station as the soccer game is played overtime, the recording operation of the program is interrupted when the recording end time passes. .

The embodiment of the present invention enables accurate and easy identification between broadcast programs in order to perform reserved recording of the video display device, so that the recording operation can be accurately performed on the broadcast program of the reserved recording target set by the user. Disclosed are an apparatus and a method for enabling the same.

An image display apparatus according to the present embodiment includes a tuner for receiving a broadcast signal transmitted through a transport stream and tuning a signal of a specific channel selected by a user; A demodulator for demodulating a selected channel through the tuner; A demultiplexer for demultiplexing the demodulated signal into video, audio and PSIP data; A PSIP decoder for decoding the PSIP data; A controller configured to perform a reservation recording operation on a program selected by a user by using information included in the PSIP data; And a storage unit for storing a program to be reserved according to the control of the controller, wherein the controller is configured to perform reservation recording by using a PID (Program IDentification) of a transport packet received while performing a reservation recording for the program. Characterized by determining whether to continue or discontinue.

According to another aspect of the present invention, a reservation recording method according to another embodiment of the present invention provides a video recording apparatus capable of reserved recording, which demultiplexes PSIP data from a broadcast signal transmitted in the form of a transport stream for a program to be reserved by a user. Initiating a reservation recording operation for the program with reference to the PSIP data; Storing a PID for the program and monitoring whether a transport packet having the same PID as the PID is received; And when the transport packet having the same PID as the PID for the program is received, performing a reservation recording operation until the end time of the program with reference to the PSIP data.

According to the video display device and the reservation recording method of the embodiment as described above, when the same PID is included in the received broadcast signal, the recording operation for the broadcast program can be performed, and thus the reservation recording function of the video display device is performed. There is an advantage that can increase the user's trust.

Hereinafter, with reference to the accompanying drawings for the proposed embodiment will be described in detail. However, the spirit of the present invention is not limited to the disclosed embodiments, and those skilled in the art who understand the spirit of the present invention may easily add other embodiments by adding, changing, deleting, or adding components within the scope of the same idea. It may be suggested, but this will also fall within the scope of the spirit of the present invention.

1 is a block diagram illustrating a configuration of an image display apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the image display apparatus 100 according to the embodiment receives a transmitted broadcast signal and tunes a signal of a specific channel selected by a user, and a tuner 110 selected through the tuner 110. A demodulator (120) for demodulating a channel, a demux (130) for demultiplexing the demodulated signal into video, audio, DVB-SI, and PSIP tables, and an audio signal among the demultiplexed signals. An audio decoder 141 for decoding and outputting the video decoder 142 for decoding and outputting the video signal.

In addition, the video display device 100 includes a DVB-SI or PSIP decoder 150 for decoding a DVB-SI table or a PSIP table, a DVB-SI or PSIP database 151 for storing the decoded result, and a channel management. A channel manager (CM) 160, a channel map 161 in which channel information is recorded, and a memory unit (NVRAM or Flash Memory) 190 in which the channel map information is stored. Include.

In addition, the image display apparatus 100 may include a wireless commnunication module 180 for data communication with an external remote controller, and accurately records a reserved recording target program set by a user. It includes a system manager (170) as a control unit for controlling each component to be performed.

The operation of the image display device configured as described above will be briefly described as follows.

First, when a user operates a channel key of a key input unit of a remote controller, the system manager 170 receives a channel key input, and the channel manager 160 is stored in the channel map 161 according to the channel key input. Read the frequency of the matching channel among the channel information.

The channel manager 160 sets the tuner 110 according to the read channel frequency so that the channel selected by the user is tuned. The signal tuned through the tuner 110 is demodulated through the demodulator 120 and then output to the demultiplexer 130.

Meanwhile, when tuning is performed on the channel selected through the tuner 110, a signal indicating that tuning is performed is transmitted to the channel manager 160, and the channel manager 160 transmits the tuned channel information to DVB-. The demultiplexer 130 transmits the base packet ID (base packet IDentification) or the application information table (ATT) to find the master guide table (MGT) and the virtual channel table (VCT) by transmitting to the SI or PSIP decoder 150. Set to).

On the other hand, the master guide table is an ID for each information table included in the PSIP data, the size of each information table and a plurality of channels (VC) included in the current physical channel, for a plurality of channels existing in one frequency Name, channel number, modulation scheme, and ID information of a transport stream corresponding to the channel.

The table constituting the EPG includes a RRT (Rating Region Table) for transmitting information on regions and deliberation institutions for program grades, a brief description of each channel, and information on each program in each channel. Extended Text Message (ETM), Extended Text Table (ETT) including channel ETM information and event ETM information, PAT (Program Association Table), and PMT (Program Map Table).

The demultiplexer 130 finds and demultiplexes a master guide table, a virtual channel table, or an application information table using the PID value from the signal demodulated by the demodulator 120. The event information table is found through the PID of the event information table included in the demultiplexed master guide table, and the information parsed is stored in the DVB-SI or PSIP DB 151.

In addition, the PSIP data of this embodiment further includes an event information table (EIT) for confirming the change state of the EPG information.

The information parsed from the application information table is stored in the DVB-SI or PSIP DB 151, and the information stored in the DVB-SI or PSIP DB 151 is transmitted to the channel manager 160.

The system manager 170 (also used as a control unit according to the description) determines the changed state of the EPG information by referring to the event information of the event information table in the PSIP data, and the event information includes a unique event ID and a starting time. It includes at least one or more of the data (time), length (Length), title (title) or description (Description).

In addition, the controller of the video display device according to the embodiment is characterized by using the PID for the program to determine whether the broadcast time is changed for the reserved recording target program set by the user.

The system manager 170 parses the contents of the event ID, title, or description of the EIT with reference to the PSIP data to perform the scheduled recording for the reserved recording target program set by the user, and starts the program title or program start. Confirm whether or not the program is a reservation recording target.

The system manager 170 monitors whether a transport packet having a corresponding PID is detected by using a PID of the corresponding program while performing a reserved recording for a reserved recording target program.

In detail, the system manager 170 performs a reservation recording operation for a corresponding program by using a program start time included in an event information table for a target recording target program.

The system manager 170 monitors whether a transport packet including a PID equal to the PID of the corresponding program is received. That is, the system manager 170 performs the reserved recording operation using the information in the table for the corresponding program, and checks whether the PID of the received transport packet is the same as the PID of the recording target program.

The operation of the scheduled recording is not only dependent on the program title, start time, end time, etc. contained in the program table, but a transport packet having the same PID as the PID of the corresponding program is received from the start of the scheduled recording to the end of the recording. Can be monitored.

This is because, although the broadcast time of a specific program is changed, the additional information included in the received PSIP data may not be correctly modified. For example, even when the broadcast time is extended due to overtime, the end time may not be corrected as additional information included in the PSIP data transmitted from the broadcasting station.

In this regard, an embodiment of the present invention uses a PID for a program to be scheduled recording, so that a recording operation can be performed on a transport packet having the same PID as the corresponding PID, thereby making an accurate reserved recording process of the broadcast program. This can be done.

When the reservation recording process of the video display device can be performed using the PID of the corresponding program, the burden on the broadcasting station to modify all kinds of tables may be greatly reduced.

That is, when the broadcasting station suddenly changes or extends the broadcast time, the inherent PID of the program is maintained, thereby reducing the need to correct additional information included in the EIT or PMT.

With respect to the embodiment of the present invention disclosed by the video display device as described above, a reservation recording method of the video display device will be described with reference to FIG.

2 is a flowchart illustrating a reserved recording method of an image display apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 2, a digital broadcast signal in the form of a transport stream is received and demodulated on a selected channel, and the demodulated transport stream is demultiplexed into respective video bit streams, audio bit streams, and PSIP data.

The user acquires information about various programs of various channels from the demultiplexed PSIP data, and sets a reservation recording for the program to be watched.

The video display device starts recording by using the information such as the broadcast start time and the channel recorded in the event information table for the corresponding program which is the object of reservation recording (S101).

Next, the image display apparatus monitors whether a transport packet having the same PID as the PID is received using the PID information on the corresponding program (S103), and as a result, the transport packet not including the same PID is received. If it is received, since the broadcasting of the program is finished, the recording operation is stopped (S106).

However, when a transport packet having the same PID is received, the broadcasting time information of the corresponding program is stored from the tables in which the broadcasting time information of the program is recorded with reference to the PSIP data (S104).

 When the broadcast end time of the program is reached (S105), the recording operation of the program to be recorded is stopped (S106), and the PID of the transport packet is received until the scheduled recording operation of the program is stopped. The monitoring operation is carried out continuously.

According to the embodiment as described above, even if the broadcast time of the broadcast program occurs before the EPG update time, since the reserved recording operation can be performed accurately using the PID for the program, recording or target program of the unwanted broadcast program Problems such as recording only part of the video will not occur.

1 is a block diagram illustrating a configuration of an image display apparatus according to an embodiment of the present invention.

2 is a flowchart illustrating a reserved recording method of an image display device according to an embodiment of the present invention.

Claims (5)

A tuner that receives a broadcast signal transmitted through a transport stream and tunes a signal of a specific channel selected by a user; A demodulator for demodulating a selected channel through the tuner; A demultiplexer for demultiplexing the demodulated signal into video, audio and PSIP data; A PSIP decoder for decoding the PSIP data; A controller configured to perform a reservation recording operation on a program selected by a user by using information included in the PSIP data; And And a storage unit for storing a program to be reserved and recorded under the control of the controller. And the controller is configured to determine whether to continue or stop the reservation recording by using a PID (Program IDentification) of the transport packet received during the reservation recording of the program. The method of claim 1, And the control unit stores a PID for a program to be reserved for recording, and if the PID of the received transport packet is the same as a previously stored PID, continuously performs a recording operation for the program. The method of claim 2, And if the PID of the received transport packet is the same as the pre-stored PID, using the additional information included in the PSIP data, the controller performs a reserved recording operation until the end time of the program. In the video display device capable of reserved recording, Demultiplexing PSIP data from a broadcast signal transmitted in the form of a transport stream for a program to be reserved by a user, and starting a reservation recording operation for the program with reference to the PSIP data; Storing a PID for the program and monitoring whether a transport packet having the same PID as the PID is received; And If a transport packet having the same PID as the PID for the program is received, performing a reservation recording operation until the end time of the program with reference to the PSIP data; How to record. The method of claim 4, wherein If the transport packet is received as a result of the monitoring that does not include the same PID as the PID for the program, the recording process for the program further comprises the step of stopping the recording process of the video display device Way.

Images