KR20060071666A - Method and apparatus for program recording and program playback - Google Patents

Abstract

A broadcast program recording / playback apparatus and method are provided.

According to an embodiment of the present invention, a broadcast program recording / reproducing apparatus includes a storage unit for storing a stored recording program, a recording program play list for the recording program, and information based on the information of the automatic recording list according to the contents of the automatic recording list. And a controller configured to record a program, generate the recorded program play list, and assign the recorded program to a virtual channel to form a channel list including virtual channel list information and actual channel list information.

Recording program, playback, virtual channel, picture in picture

Description

Broadcast program recording / playback apparatus and method {Method and apparatus for program recording and program playback}

1 is a flowchart illustrating a reproduction process of a program recorded in a conventional digital TV.

2 is a block diagram illustrating a configuration of a digital broadcast receiver according to an embodiment of the present invention.

3 illustrates an operation panel of a remote control apparatus applied to an embodiment of the present invention.

4 illustrates a recorded program play list according to an embodiment of the present invention.

5 illustrates a virtual channel list according to an embodiment of the present invention.

6A and 6B illustrate a channel list according to an embodiment of the present invention.

7A, 7B, 7C, and 7D illustrate screens output according to an embodiment of the present invention.

8 is a flowchart illustrating a data processing procedure in a digital broadcast receiver according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

200: digital broadcast receiver

300: remote control

400: recording program play list

500: virtual channel list

600, 602: Channel List

700: full screen

710: second screen according to PIP execution

730: Recording program play list for the selected virtual channel

The present invention relates to a broadcast program recording / reproducing apparatus and method, and more particularly, to a user interface method and apparatus for conveniently watching a recorded program.

With the development of digital technology, as the storage capacity of storage media such as hard disk drives (HDDs) has recently increased, it is possible to record desired broadcast programs. As a method of recording a broadcast program, a user may record while watching a broadcast program or input information such as channel information and a program airing time of a program in advance so that a desired program is recorded. In particular, in the case of a device such as a digital broadcast receiver, the additional information data transmitted along with the A / V data, that is, the EPG (Electronic Program Guide) is used to determine the user's preferences and automatically record a program having a high user preference. .

The program recorded in the digital broadcast receiver in this manner is reproduced through the process as shown in FIG. That is, when a command signal for a menu button is input through an input device such as a remote controller (hereinafter referred to as a remote controller) (S110), a menu list is output according to the input command signal (S120). Next, when a menu for viewing a recorded program is selected from the output menu list (S130), a list of playable recorded programs, that is, a program list recorded in the digital broadcast receiver 200, is output on the screen (S140). . If a predetermined program is selected by the user, the selected program is reproduced and output through the screen (S150).

However, in the above-described program recording / reproducing apparatus, when a user views a recorded program because the general broadcast program viewing method and the viewing method of the recorded program are different from each other, it is difficult to select the recorded program. there is a problem. In other words, when a user wants to watch a program that is currently being broadcast, the user can watch a desired broadcast program only by operating a channel change button provided in the input device. However, when the user wants to watch a recorded program, the menu as shown in FIG. You must go through the operation process. Therefore, a user who does not know how to operate a digital broadcast receiver cannot easily know which program is recorded.

In order to solve this problem, Korean Patent Laid-Open Publication No. 2001-107623 assigns a recorded program to a virtual channel so that there is no distinction between a real channel and a virtual channel, and operates a channel change button provided in an input device such as a remote control. A technique for a method and an apparatus capable of watching a recorded program in the same manner as a general program viewing method is known. In the disclosed technology, a schedule for a virtual channel is generated based on channel information of a recorded program and profile information of a user, and is provided to the user in the form of a list together with a schedule for a general broadcast program, that is, a real channel.

However, since this list outputs the entire broadcast program information, there is a problem in that when the user directly selects the virtual channel without checking the list, the user cannot check the recorded program that can be viewed in the selected virtual channel.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and by outputting a recording program assigned to a virtual channel according to a user preference, a method and apparatus for more efficiently showing information on a recording program that can be viewed to a user The purpose is to provide.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a broadcast program recording / reproducing apparatus according to an embodiment of the present invention includes a storage unit for storing a stored recording program and a recorded program reproduction list for the recorded program according to the contents of the automatic recording list, and the automatic recording list. And a controller configured to record a broadcast program based on information of the user, generate the recorded program play list, and assign the recorded program to a virtual channel to form a channel list including virtual channel list information and actual channel list information. .

In order to achieve the above object, a broadcast program recording / reproducing method according to an embodiment of the present invention records a broadcast program based on information of an automatic recording list, and generates a recorded program play list for the recorded broadcast program. Confirming reception of a broadcast signal, separating a fact channel from a virtual channel, and allocating the recorded broadcast program to the virtual channel by category based on the recording play list, and whether the currently selected channel is a virtual channel. Determining, outputting the recorded program having the highest user preference according to the recorded program play list, and executing a PIP function to repeatedly output the next-order recorded programs of the virtual channel at predetermined time intervals on the second screen. It includes.

Specific details of other embodiments are included in the detailed description and drawings, and the advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete and common knowledge in the technical field to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

The broadcast program recording / reproducing apparatus according to the embodiment of the present invention may be implemented as an independent device capable of recording / reproducing a broadcast program, or may be combined with a digital broadcast receiver 200 such as a set top box (STB). Can be. Hereinafter, an embodiment of the present invention will be described with reference to a case where the present invention is configured in combination with the digital broadcast receiver 200 as an embodiment.

The digital broadcasting receiver 200 is a video data compressed according to the MPEG-2 method from the broadcasting station, audio data compressed according to the AC-3 method and EPG, weather, news, sports, traffic information, Receive an MPEG-2 Transport Stream (TS) including Service Information (SI) data such as TV e-commerce, channel information, program information, program name, and program broadcast time. In addition, the user may provide A / V for a broadcast desired by the user or an EPG for broadcast program, that is, broadcast guide information. The digital broadcast receiver 200 may be a separate set top box or a built-in set top box.

2 illustrates the structure of a digital broadcast receiver 200 according to an embodiment of the present invention in more detail. Referring to this configuration and operation of the digital broadcast receiver 200 according to an embodiment of the present invention will be described.

As shown in FIG. 2, the digital broadcast receiver 200 according to the embodiment of the present invention includes a tuner 210, a demodulator 220, a demultiplexer 230, and an audio decoder 240. , A video decoder 250, a voice processor 242, an image processor 252, a remote control signal receiver 260, a memory 280, a storage 290, and a controller 270.

The tuner 210 tunes to a reception band of a channel selected by a user, converts the received signal wave into an intermediate frequency (IF) signal, and provides the demodulator 220 with one or more signals. Can be.

The demodulator 220 demodulates the digital signal provided from the tuner 210 and supplies the MPEG-2 TS format data to the demultiplexer 230.

The demultiplexer 230 extracts the compressed voice data and the compressed video data from the input MPEG-2 TS, and supplies them to the audio decoder 240 and the video decoder 250, respectively.

The audio decoder 240 decodes input voice data, generates program voice data, and supplies the same to the voice processor 242. The voice processing unit 242 performs a predetermined voice signal processing on the input voice data and outputs a voice through the amplifier.

The video decoder 250 decodes image data, generates program image data, and supplies the same to the image processor 252. The image processor 252 generates an image output by applying predetermined processing to the input program image data. In addition, the image processor 252 has a function of superimposing character information or the like on a program image displayed on a TV display screen. In addition, the image processing unit 252 preferably supports a picture in picture (PIP) function to output another screen at a predetermined position on the TV display screen. The PIP function is executed when the virtual channel is selected. On the second screen outputted according to the execution of the PIP function, the recorded program play list 730 for the selected virtual channel is output or the recorded programs playable in the selected virtual channel for a predetermined time. Output alternately at intervals. This will be described later with reference to FIGS. 7A, 7B, 7C, and 7D.

The memory unit 280 stores programs necessary for diagnosing and initializing the digital broadcast receiver 200, and stores EPG text data and graphic data (program table frame, broadcast channel logo mark, etc.) for displaying EPG. do. The memory unit 280 may be implemented as a nonvolatile memory device such as a cache, a ROM, a PROM, an EPROM, an EEPROM, an SDRAM, and a flash memory, or a volatile memory device such as a RAM, but is not limited thereto.

The storage unit 290 stores programs recorded automatically according to a user's command or information of an automatic recording list. Here, the automatic recording list is a list including information on a program to be automatically recorded, and is updated according to the user's preference. At this time, the user's preference is determined through information such as program viewing time. In addition, the storage 290 may store the recorded program playback list 400 and the channel list 600 generated by the controller 270. Here, the recorded program play list 400 refers to a playback schedule table for the recorded programs stored in the storage 290, and is generated by the controller 270. In addition, the channel list 600 refers to a broadcast schedule table including program information on the real channel and the virtual channel. The storage unit 290 may be implemented as a hard disk drive (HDD) having a large capacity, for example, 1TB or more hard disk, but is not limited thereto.

The remote control signal receiver 260 receives a remote control signal from a remote control device such as a remote control 300 and provides it to the controller 270.

The controller 270 controls the components in the digital broadcast receiver 200 according to a user's command. For example, a command is sent to the tuner 210 to tune to the frequency of the channel specified by the user. As another example, when displaying an EPG, the controller 270 prepares EPG text data and graph data using the SI stored in the memory unit 280, and supplies the EPG text data and graph data to the image processor 252. The image processor 252 changes the program video data and the EPG display data from the video decoder 250 or superimposes the EPG display data on the program data and outputs the video signal as a video signal to the TV screen.

In addition, the controller 270 determines a user's preference, generates an automatic recording list, and automatically records a broadcast program having a high user preference based on the information of the automatic recording list. For example, when a user watches a specific program for a predetermined time, for example, 30 minutes or more, a broadcast program having the same program name in a received broadcast signal based on information about the program, for example, a program name. Record the video automatically. At this time, the automatically recorded program is stored in the storage unit 290.

Thereafter, as shown in FIG. 4, the controller 270 generates a recorded program play list 400, that is, a play schedule table for the recorded program. When the recorded program play list 400 is generated, the recorded programs are classified into categories 410 and 420, as shown in FIG. 4, and the recorded programs belonging to the same category are independent of the order in which they are recorded. The playback schedule is determined according to the preference 450.

In addition, when receiving a broadcast signal, the controller 270 determines the actual channel and the virtual channel and extracts information on the virtual channel. Here, the actual channel means a channel on which a broadcast program is being received, and the virtual channel means a channel where no broadcast signal is detected. For example, when the digital broadcast receiver 200 currently has channels 1 to 20, and a broadcast signal transmitted from a broadcasting station is received through channels 1 to 10, channels 1 to 10 are received. Channels correspond to actual channels, and channels 11 through 20 correspond to virtual channels.

Thereafter, the controller 270 allocates a recorded program to a predetermined virtual channel according to the information of the recorded program reproduction list 400 to generate the virtual channel list 500 as shown in FIG. 5. When allocating a recording program to a virtual channel, the information of the recording program reproduction list 400 is referred to, and the category 410 is assigned to each virtual channel. For example, when the category 410 of the recorded program play list 400 is classified as a documentary, a drama, a music program, as shown in FIG. 5, a program corresponding to the documentary is assigned to channel 11 and the drama The corresponding program is assigned to channel 12. The program corresponding to the flexible program is allocated to channel 13.

On the other hand, the playback order of the recorded program allocated to the predetermined virtual channel is determined according to the user's preference 450 without the order in which the programs are recorded. For example, when a plurality of programs corresponding to a documentary are recorded, a playback schedule table is configured to be played back as the user's viewing preference is higher. More specifically, when the storage unit 290 is recorded in the order of the natural documentary program, the human documentary program, the history documentary program, if the user's preference 450 is lowered in the order of the natural documentary, the historical documentary, the human documentary. When allocating a recorded documentary program to channel 11, which is a virtual channel, the documentary program is allocated in order of natural documentary, historical documentary, and human documentary, respectively.

After generating the virtual channel list 500 as shown in FIG. 5, the controller 270 constructs a channel list 600 including actual channel list information and virtual channel list information as shown in FIG. 6A. In this case, the channel list 600, that is, the EPG (Electronic Program Guide) may be configured such that the vertical axis and the horizontal axis represent channel information 610 and program broadcast time information 620, respectively. Subsequently, when there is an EPG request by the user, the controller 270 outputs a channel list 600 as shown in FIG. 6A, and records the recording program only by manipulating the channel change keys 321 and 323 of the remote controller 300. Allow them to watch.

In addition, as shown in FIG. 6A, the channel list 600 may output identification information 630 for identifying a real channel and a virtual channel. For example, in the case of a real channel, R is displayed, and in the case of a virtual channel, V is displayed so that a user can distinguish between a real channel and a virtual channel.

On the other hand, the playback schedule of the recorded programs allocated on the virtual channel is reconfigured based on the current time. For example, as a result of checking the current time, if the current time is 3:00 pm, the playback schedule of the recorded programs on the virtual channel is configured and output based on 3:00, as shown in FIG. 6A. At this time, if the user has not watched the program of the virtual channel, but watched the broadcast program of the real channel, for example, the channel 2 for 1 hour, the playing time of the recorded programs in the virtual channel list 500 may be The program is delayed and reconstructed as much as the time watched. As a result, the channel list is also reconstructed, as shown in FIG. 6B.

In addition, when receiving a command signal related to channel selection through an input device such as a remote controller 300, the controller 270 checks the information of the channel list 600, and whether the selected channel is the actual channel according to the received command Determine if the channel is a channel. As a result of the determination, when the virtual channel is selected, the program having the highest preference in the selected virtual channel is output on the full screen 700. At the same time, the PIP function is executed to alternately output the recorded program which can be reproduced in the selected virtual channel at predetermined time intervals to the second screen outputted at a predetermined position of the screen, according to the preference. For example, if a documentary program is assigned to channel 11, and the playback order of recorded programs on channel 11 is a sequence of natural documentary, historical documentary, and human documentary, the moment the channel 11 is selected, the control unit 270 displays FIG. As shown in FIG. 7A, an image of the natural documentary program is output on the full screen 700, and an image of the historical documentary program is output through the second screen 710. In addition, when a predetermined time, for example, 5 seconds has elapsed and the set time has elapsed, as illustrated in FIG. 7B, an image of a human documentary program is output to the second screen 710. After 5 seconds have elapsed, the controller 270 outputs an image of the historical documentary to the second screen 710 as shown in FIG. 7A. The process of outputting the recorded program through the second screen 710 is repeated until the channel change is made.

On the other hand, when the digital broadcast receiver 200 supports a plurality of PIP functions, it is also possible to display recorded programs according to preferences on each PIP screen. For example, when the digital broadcast receiver 200 supports two PIP functions, as shown in FIG. 7C, a natural documentary program is output on the entire screen 700, and the first screen 710 and the third screen are output. The screen 720 outputs images of a history documentary and a human documentary program, respectively. In this case, when there are two or more recorded programs corresponding to the documentary category, the respective recorded programs are alternately output to the second screen 710 and the third screen 720 according to the preference.

Meanwhile, in another embodiment, when the virtual channel is selected, as shown in FIG. 7D, a method of outputting the recorded program play list 730 for the currently selected virtual channel to the second screen 710 may be possible. At this time, the recorded program play list output through the second screen 710 may display brief information about the recorded program, such as a program name, a category, a play time, and the like.

In addition, the digital broadcast receiver 200 according to the embodiment of the present invention is not shown, but includes an input unit including a plurality of function keys, a POD module capable of decrypting an encrypted broadcast program, a cable card, a PC, a camcorder, and a scanner. It may include an external interface for exchanging data with a peripheral device such as.

Next, Figure 3 illustrates the appearance of a remote control device, that is, a remote control 300 applied to an embodiment of the present invention.

As shown in FIG. 3, the remote controller 300 applied to the embodiment of the present invention has four direction keys and a plurality of numbers for channel designation, such as the left 321, the right 324, the up 321, and the down 323. And a function key (not shown) for controlling the function of the key 310 and the digital broadcast receiver 200. When the keys included in the remote controller 300 are applied, a command signal for the applied key is generated in the remote controller 300, and the command signal is modulated into a wireless signal, for example, an infrared signal, to the digital broadcast receiver 200. Is sent.

Meanwhile, the remote control signal transmitted from the remote controller 300 is received by the remote control signal receiver 260 of the digital broadcast receiver 200, and the controller 270 operates the digital broadcast receiver 200 according to the received control signal. To control. For example, when channel 8 is currently selected for the digital broadcast receiver 200, when the uplink key 321 of the remote controller 300 is applied, the remote control signal receiver receives a command signal for the uplink key 321. Receives and provides to the control unit 270. Thereafter, the controller 270 processes the received command signal and provides a control signal for channel increase to the tuner 210 so that channel 9 is selected.

Next, FIG. 8 is a flowchart illustrating a data processing process performed by the digital broadcast receiver 200 as described above.

First, the digital broadcast receiver 200 according to the present invention grasps a user's preference, generates an automatic recording list, and automatically stores a program transmitted from a broadcasting station according to the automatic recording list (S800). In this case, the user's preference is determined through user commands input through an input device such as the remote controller 300 and information such as viewing time. For example, if a user selects and watches a specific channel, for example, channel 11, using the remote controller 300, the controller 270 receives a command signal for channel change from the time when channel 11 is selected. By checking the elapsed time until, to determine the preference for the currently watching broadcast program. If the preference for the corresponding channel is higher than the predetermined criterion by comparing the preference with a predetermined criterion, the additional data for the corresponding broadcast program is extracted to generate an automatic recording list, or the extracted information is added to the existing automatic recording list. Add.

More specifically, when the user watches a drama for one hour, the controller 270 determines the user's preference according to the viewing time. When the preference for the drama program is greater than or equal to a preset reference value, the digital broadcasting receiver 200 extracts additional information about the drama, for example, a program name and broadcasting station information, and adds the extracted information to the automatic recording list.

When additional information about the drama is added to the automatic recording list, when the broadcast signal is received through the tuner 210, the digital broadcast receiver 200 according to the information of the automatic recording list, the corresponding drama from the received broadcast signal Automatically record a broadcast program having the same program name as the recording, and records in the storage unit 290 (S800).

Thereafter, the recorded recorded programs are classified into categories 420 and 430 and user preferences 450 to generate a recorded program play list 400 (S810). For example, by analyzing service information of recorded programs, the recorded programs are classified into documentary, drama, and song categories, and programs corresponding to the same category are played in order of user preference 450 regardless of the recording order. Next, the recording program play list 400 is generated.

After the recording program play list 400 is generated in this way, the received broadcast signal is analyzed to distinguish a channel on which broadcast reception is made and a channel on which broadcast reception is not performed (S820). That is, information about virtual channels to which a recording program can be allocated is extracted by distinguishing between a real channel and a virtual channel. For example, when the digital broadcast receiver 200 has 20 channels from 1 to 20, and as a result of checking the broadcast reception status, if broadcast reception is performed through channels 1 to 10, A channel in which broadcast reception is not performed, that is, channels 11 to 20 is set as a virtual channel.

After extracting the virtual channel information, the virtual channel list 500 is generated by allocating the recorded programs to the respective virtual channels based on the information of the recorded program reproduction list 400 (S830). For example, a virtual channel list 500 to which recording programs belonging to a documentary, recording programs belonging to a drama, and recording programs corresponding to a flexible program are allocated to channels 11, 12, and 13, respectively.

After generating the virtual channel list 500, the channel list 600 including the real channel list information and the virtual channel list information is generated (S840). In this case, the channel list 600 may be configured such that the vertical axis and the horizontal axis represent channel information 610 and program broadcast time information 620, respectively. In addition, the vertical axis may include identification information 630 for each type of channel. That is, identification information 630 for identifying whether the corresponding channel is a real channel or a virtual channel may be included.

Thereafter, when a command signal is received from an input device such as the remote controller 300, the controller 270 determines whether the channel selected by the received command signal is a virtual channel (S850). As a result of the determination, if the channel selected by the received signal is an actual channel (S850, NO), a broadcast program for the actual channel is output according to the information of the channel list 600 (S852). For example, if a user is currently watching a broadcast program of channel 10, if the down key 323 of the remote controller 300 is applied, the controller 270 performs a channel according to the command signal for the down key 323. Step 1 is reduced, so that channel 9 is selected, and a broadcast program for channel 9 is output.

On the other hand, if the channel selected by the received command signal is a virtual channel (S850, Yes), based on the information of the channel list 600, the program with the highest preference in the selected virtual channel is output through the screen (S860). For example, if a user applies the up key 321 of the remote controller 300 while watching a broadcast program of channel 10, the command signal according to the up key 321 is received by the remote control signal receiver 260. And is provided to the controller 270. At this time, the controller 270 checks the information of the channel list 600 and determines that the channel selected by the received command signal is a virtual channel. Thereafter, the channel is increased by one step according to the received command signal, so that channel 11 is output. At this time, by accessing the storage unit 290 according to the information of the channel list 600, the recording program with the highest preference in channel 11, that is, the recording program for the natural documentary, is output through the entire screen.

At the same time, by executing the PIP function (S862), a second-level recording program, for example, a recording program for a history documentary, is output through the second screen 710 output according to the execution of the PIP.

Thereafter, the controller 270 determines whether a predetermined time, for example, 5 seconds has passed through the timer unit (not shown) (S864). As a result of the determination, if 5 seconds have not elapsed (S864, NO), an image of the historical documentary program is continuously output on the second screen 710 (S862). As a result of the determination, when 5 seconds have elapsed, the recorded program image of the human documentary is output on the second screen 710 according to the reproduction schedule information of the channel list 600 (S866).

On the other hand, after outputting the recorded program image for the human documentary on the second screen 710, it is determined whether a predetermined time, for example, 5 seconds has elapsed. As a result of the determination, if 5 seconds have not elapsed, an image of the human documentary program is continuously output on the second screen 710. As a result of the determination, if 5 seconds have elapsed, the second screen 710 outputs the image of the historical documentary program again.

The control unit 270 continuously outputs an image of a recording program that can be played on the currently selected virtual channel by repeating the above steps S862 to S868 until a command signal for channel selection or change is received.

On the other hand, when outputting the next recorded program image on the second screen 710 through the PIP function, instead of cyclically outputting the image of the recorded program according to the user preferences 450, the recording can be played back in the selected virtual channel list. It may also output a list 730 of programs. At this time, the recorded program reproduction list 730 output through the second screen 710 may be extracted from the virtual channel list 500.

With reference to the drawings illustrated as above, the broadcast program recording / reproducing apparatus and method according to the present invention has been described, the present invention is not limited by the embodiments and drawings disclosed herein, the technical spirit of the invention Of course, various modifications may be made by those skilled in the art within the scope.

As described above, the apparatus and method for recording / reproducing broadcast programs according to the present invention has one or more of the following effects.

First, by assigning a recorded program to a virtual channel, like a general broadcast channel, there is an advantage that the recorded program can be viewed only by changing a channel.

Second, when the virtual channel is selected, by repeatedly outputting the recorded program playable in the selected virtual channel using the PIP screen, the user can recognize the information about the recorded program that can be viewed more intuitively.

Claims (5)

A storage unit for storing the stored recording program according to the contents of the automatic recording list and the recorded program play list for the recording program; Recording a broadcast program based on the information of the automatic recording list, generating the recorded program reproduction list, and assigning the recorded program to a virtual channel to construct a channel list including virtual channel list information and actual channel list information. Broadcasting program recording / reproducing apparatus, characterized in that it comprises a control unit. The method of claim 1, And the recorded program play list classifies the recorded program according to category information and includes playback schedule information of the recorded program determined according to user preference. The method of claim 2, When the virtual channel is selected, the controller outputs a screen having the highest user preference according to the information of the channel list, and repeatedly outputs a next-order recording program for the virtual channel through a second screen at predetermined time intervals. And outputting the recorded program play list for the virtual channel through the second screen. Recording a broadcast program based on information of an automatic recording list, and generating a recorded program play list for the recorded broadcast program; Confirming reception of a broadcast signal, separating the fact channel from the virtual channel; Allocating the recorded broadcast program to the virtual channel by category based on the recording reproduction list; Determining whether the currently selected channel is a virtual channel and outputting a recorded program having the highest user preference according to the recorded program play list; And And executing a PIP function to repeatedly output next-order recorded programs of the virtual channel on a second screen at predetermined time intervals. The method of claim 4, wherein And repeatedly outputting the next recorded programs, outputting a recorded program play list for the virtual channel through the second screen.

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