KR20090076548A - Method for controlling a recording and reproducing in digital broadcasting receiver - Google Patents

Abstract

A method for controlling recording and reproducing in a broadcasting receiver is provided not to record when only graphic data is included in a transport stream, thereby preventing undesired graphic data from unnecessarily being recorded. A broadcasting receiver determines whether a recording command or a time shift setup command is inputted while displaying a broadcast(S11,S12). If the recording command or the time shift setup command is inputted, the receiver checks whether only graphic data is included in a currently received broadcast channel(S13). If only the graphic data exists, the receiver controls the recording or time shift functions not to operate(S15).

Description

Broadcast recording and playback control method in broadcasting receiver {METHOD FOR CONTROLLING A RECORDING AND REPRODUCING IN DIGITAL BROADCASTING RECEIVER}

The present invention relates to a broadcast recording and playback control system. In particular, when a predetermined broadcast is recorded in a digital broadcast, the graphics engine does not perform a recording function when the transport stream includes only graphic data. The present invention relates to a broadcast recording and reproducing control method of a broadcast receiver for converting a signal to an idle state.

Recently, with the spread of digital broadcast receivers, digital video recorders (Personal Video Recorder or Digital Video Recorder) for recording and playing back digital broadcasts through storage media such as hard disks have been released. The digital broadcast recorder may be built-in embedded in the digital broadcast receiver or externally connected to the digital broadcast receiver externally.

The digital broadcast recorder is rapidly replacing the existing VCR (Video Cassette Recorder) product due to the full-scale digital broadcasting. The digital broadcast recorder is equipped with a high-performance central processing unit (CPU), and uses a method of recording digital broadcast programs in file units on a storage medium such as a hard disk drive (HDD). Therefore, there is an advantage that the stored program can be easily searched and can be easily played and edited and viewed.

In order to record a broadcast program using the digital broadcast recorder, a 'record' method of recording immediately through key input while watching a program or a 'time shift' function of setting a time shift function through a menu is provided. Shift recording 'method.

For reference, the time shift function provides a temporary storage (or buffering) method for a program that has already been watched for a predetermined time, so that the program may not be missed for a moment or watch again, or the broadcast may be skipped at a part of which is not of great interest. It means to watch.

1 is a flowchart illustrating a method of recording a broadcast program using a general digital broadcast recorder.

As shown in FIG. 1, when a video, audio and graphic data stream is first transmitted from a broadcasting station, an EPG (Electronic Program Guide) showing information about a broadcast program is obtained from the graphic data stream (S1).

The user finds and watches a desired broadcast program by using the EPG, and when watching a program, the contents of viewing for a predetermined time are temporarily stored by the time shift recording function of the digital broadcast recorder (S2).

At this time, if the user wants to record the desired program, pressing the record button of the remote control or the main body immediately records (S3), whereby the broadcast program starts to be stored in the hard disk of the digital broadcast recorder (S4).

Thereafter, when watching the desired program is finished, the user immediately stops recording by pressing the stop button on the remote controller or the main body (S5). At this time, the digital broadcast recorder stops the storage operation on the hard disk, searches for EPG data, inserts a title, a plot, and the like of the newly created recording program, and ends the recording operation by adding it to the list of recorded programs (S6 and S7).

Subsequently, the user may play and watch the recorded broadcast stored in the hard disk of the digital broadcast recorder through key input when desired (S8). Of course, if the time shift function is set when watching the recorded broadcast, the broadcast of the current channel is stored (buffered) in the digital broadcast recorder for a predetermined time.

Conventional digital broadcast receivers perform time shift and recording functions through this process.

However, the conventional time shift or recording function also records unnecessary data when recording a transport stream, which is a broadcast signal, which causes unnecessary operation of a recording related circuit. That is, the transport stream output through the tuner is an optional combination of video, audio, and graphic data streams, and if the transport stream consists only of the graphic data streams, even if the time shift is set, the time shift function is performed. It is desirable not to work.

In addition, when reproducing the broadcast stored in the hard disk, the graphics engine controller for processing the graphic data stream among the transport streams output through the tuner is also operated. When reproducing the recorded broadcast, the operation of the graphics engine controller is unnecessary. . However, in the related art, even when the recorded broadcast is played, unnecessary operation of the controller is performed as the graphic engine controller still operates.

An object of the present invention is to record a predetermined broadcast by using the instant record (Time Record) or time shift function in the digital broadcast, when the audio stream and video signal is not present in the transport stream only contains graphic data The present invention provides a method of controlling broadcast recording and playback in a broadcast receiver that can prevent unnecessary recording of only graphic data that is not desired by a user by controlling not to perform a recording function.

Another object of the present invention is to provide a broadcast receiver capable of preventing the graphics engine from operating unnecessarily during playback of a recorded broadcast by switching the graphics engine to an idle state when playing a broadcast recorded on a storage medium such as a hard disk. To provide a broadcast recording and playback control method of the.

In the broadcast recording and reproducing control method of the present invention for achieving the above object, in the recording and reproducing control method of the broadcast receiver for recording the received broadcast on the storage medium, and reproduces the broadcast recorded on the storage medium, the broadcast receiver is Determining whether a recording command or a time shift setting command is input while displaying a broadcast; When the recording command or the time shift setting command is input, checking whether a broadcast channel currently received is a broadcast in which only graphic data exists; And recording the broadcast on a storage medium by controlling the recording or the time shift function to not operate when the broadcast includes only the graphic data, and controlling the recording or the time shift function when the broadcast includes the video or audio signal. Characterized in that it comprises a.

In detail, the step of confirming whether only the graphic data exists includes determining an event information table of graphic data included in the received broadcast signal to determine whether a video or audio signal exists in the received broadcast signal. do.

In addition, when a recording and playback command is input while displaying or broadcasting the broadcast, determining whether the current viewing mode is a real broadcast viewing mode or a recording playback mode; Controlling the graphics engine to process graphic data to be turned off in the actual broadcast viewing mode; And turning off the graphic engine and reproducing the recorded broadcast corresponding to the recording and reproducing command from the storage medium.

The checking of the current viewing mode may include checking a recent operation command input from the outside, checking a control state according to a recent operation command, or checking whether a displayed broadcast signal is a received broadcast signal or a recorded broadcast signal. It is characterized by.

Determining whether the current viewing mode is the recording reproduction mode or the actual broadcasting viewing mode when a command for switching to the actual broadcasting viewing mode is input while playing the recorded broadcasting; Controlling the graphics engine to process graphic data in the recording play mode; And controlling the current broadcast to be displayed after turning on the graphic engine.

Another technical method of the present invention for achieving the above object is, in the recording and playback control method of the broadcast receiver for recording the broadcast received on the storage medium, and playback of the broadcast recorded on the storage medium, the broadcast receiver displays the broadcast Determining whether or not the current viewing mode is a real broadcast viewing mode or a recording reproducing mode when a recording / playback command is input during recording or during recording; Controlling the graphics engine to process graphic data to be turned off in the actual broadcast viewing mode; Playing the recording broadcast corresponding to the recording and reproducing command after turning off the graphic engine; Controlling to turn on a graphic engine for processing graphic data when a command for switching to an actual broadcast viewing mode is input while playing the recorded broadcast; And turning on the graphic engine and controlling the received actual broadcast to be displayed.

In detail, the checking of the current viewing mode may include checking a recent operation command input from an external device, checking a control state according to a recent operation command, or displaying a broadcast signal as a received broadcast signal or a recorded broadcast signal. It is characterized by checking the recognition.

As described above, in the present invention, when a predetermined broadcast is recorded by using an instant record or time shift function in a digital broadcast, audio and video signals are not included in the transport stream and only graphic data is included. If you do, you can prevent the recording function from being recorded unnecessarily by controlling not to perform the recording function, making it possible to use the memory more efficiently and to eliminate troublesome procedures such as editing the recorded broadcast. There is an advantage to that.

In addition, when playing a broadcast recorded on a storage medium such as a hard disk, the graphics engine is switched to an idle state to prevent the graphics engine from operating unnecessarily during playback of the recorded broadcast, thereby eliminating the overload of the control unit so that the stable operation is performed. You can expect.

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

2 is a functional block diagram showing an apparatus for controlling broadcast recording and playback in a broadcast receiver according to the present invention.

The broadcast receiver 100 according to an embodiment of the present invention includes a digital television, a settop box, and the like, which have a function of receiving a predetermined digital broadcast signal and making a reservation recording on a predetermined storage medium. It may include. The storage medium 190 may correspond to a personal video recorder (PVR), a digital video recorder (DVR), a DVD recorder (DVDR), or the like, in which a large memory such as a hard disk is mounted.

That is, the broadcast receiver 100 according to the embodiment of the present invention includes a built-in or an external storage medium 190, and the storage medium 190 receives the A / V stream output through the tuner 110. In addition to storing, the stored A / V stream may be reproduced and output to the display panel 141.

As shown in FIG. 2, the broadcast receiver 100 according to the embodiment of the present invention includes a tuner 110, a stream processor 120, an A / V decoder 130, a display panel 141, a speaker 145, and a graphics engine. The controller 151, the graphic processor 155, the recording controller 180, and the storage medium 190 are included.

The tuner 110 is configured to select a channel of the received broadcast signal according to a predetermined tuning control signal and output a broadcast signal of the selected channel.

The stream processor 120 receives a digital broadcast signal including a Moving Picture Experts Groups (MPEG) transport stream (TS), and outputs an A / V (Audio / Video) signal and graphic data from the received MPEG transport stream. Print separately.

The graphic data means all data such as text, graphics, bitmap, or image constituting a screen in various additional information for digital broadcasting, and such graphic data includes an event information table. . The additional information may include news and weather, entertainment, education, shopping, finance and tourism information.

The signal input to the stream processor 120 may be input through the tuner 110, but may also be input through another device such as a set top box or a cable.

The stream processor 120 may output the A / V stream to the storage medium 190 under the control of the recording controller 180.

The A / V decoder 130 restores the original video signal and the audio signal from the A / V stream output from the stream processor 120 under the control of the recording controller 180, and then processes the signal to display the display panel 141 and Output to the speaker 145, respectively.

In this case, the A / V decoder 130 includes OSD (On Screen Display) data output from the graphic processor 155 in the image signal output to the display panel 141. If a video processing unit for processing a video signal is further provided at the rear end of the A / V decoder 130, the OSD data output from the graphic processing unit 155 may be applied to the video signal output from the video processing unit to the display panel 141. It can also be included.

The display panel 141 displays the image corresponding to the image signal received from the A / V decoder 130 so as to be visually recognized, and the speaker 145 hears the audio signal output from the A / V decoder 130. Outputs to be recognizable automatically.

The graphic engine controller 151 receives the graphic data output from the stream processor 120 under the control of the recording controller 180 and processes the signal. The graphic processor 155 outputs news from the graphic engine controller 151. It generates an OSD signal regarding additional information such as travel, movies, and games, and outputs the generated OSD signal to the A / V decoder 130 to be inserted into the video signal.

The input unit 160 receives various commands related to broadcast recording, including channel change information, a time shift function, instant recording, and recording / playback, and outputs them to the recording controller 180.

In addition, the memory 170 records various recording and playback related setting information including a time shift function input through the input unit 160 and information on recording and playback related commands input through the input unit 160. It is stored under the control of.

The recording controller 180 controls the stream processor 120, the storage medium 190, and the graphics engine controller 151 according to the recording and playback-related commands input through the input unit 160 and the time shift function set in the memory 170. Selective control to control the broadcast signal to be recorded on the storage medium 190 and to control playback of the recorded broadcast signal, and to control the graphics engine controller 151 to switch to the idle state when playing the recorded broadcast. do.

On the other hand, a method of recording a broadcast program using the storage medium 190, as described in the background art, 'Record' method of recording directly through key input while watching a program, or time shift through a menu. There is a 'time shift recording' method to set the (Time Shift) function. The time shift function provides a temporary storage (or buffering) method for a program that has already been watched for a predetermined time, so that the broadcast that has been instantaneously missed can be watched again without being missed.

3A and 3B are flowcharts illustrating a process of controlling broadcast recording and playback in a broadcast receiver according to an embodiment of the present invention, with reference to FIG. 2.

First, the broadcast receiver displays a broadcast signal of a channel selected through the display panel 141 (S11).

In this state, the recording controller 180 of the broadcast receiver checks whether the 'record' command or the 'time shift' function setting command is input through the input unit 160 (S12).

When the recording command or the time shift function setting command is input, the recording controller 180 determines whether the currently received broadcast channel is a channel having only graphic data and no audio and video streams, and outputs the graphic data output through the stream processor 120. It is determined by checking the specific event information table of (S13). Here, the transport stream input to the stream processing unit 120 may be a stream in which video, audio, and graphic data are combined, a stream in which audio and graphic data are combined, or a stream including only graphic data. The various event information tables of the graphic data include a program association table (PAT), a program map table (PMT), a service description table (SDT), and the like. When the event information table is checked, the A / V stream is included in the transport stream. It can be known whether or not.

If the broadcast channel received only includes graphic data (S14), the recording controller 180 controls the stream processor 120 to not perform a recording or time shift function (S15). That is, the recording controller 180 blocks and controls the signal lines output from the stream processor 120 to the storage medium 190 so that all signals including graphic data are not output to the storage medium 190.

However, when the broadcast channel received above includes the A / V stream, the recording controller 180 outputs the separated video and audio signals through the stream processor 120 to the storage medium 190. The output of the 120 is controlled (S16). Accordingly, the storage medium 190 such as a DVR or a PVR records the broadcast signal transmitted from the stream processor 120.

On the other hand, while the recording controller 180 controls the recording of the broadcast signal in step S16, a predetermined command is input through the input unit 160 or the command input in the step S12 is not a recording related command. In step S17, it is determined whether the recorded broadcast command is to be played back in the delayed mode according to the instant recording function or the time shift function.

When the command inputted above is the recording / playback command, the recording controller 180 determines whether the current viewing mode is watching the live mode, not the recording mode (S18).

In this case, when determining the current viewing mode, the recording controller 180 checks a control state according to a recent key input command or a key input command stored in the memory 170, or the A / V decoder (120) in the stream processor 120. If the signal output to 130 is a received broadcast signal or a broadcast recorded in the storage medium 190, it may be checked.

If the current viewing mode is a live viewing state, the recording controller 180 outputs an off control signal for switching to the idle state to the graphics engine controller 151 to stop processing the graphic data ( S19). The reason why the operation of the graphic engine controller 151 is turned off is because processing of the graphic data included in the received current broadcast is unnecessary because the broadcast recorded on the storage medium 190 is played back.

Subsequently, the recording controller 180 controls the storage medium 190 so that the corresponding recording program or the recording broadcast corresponding to the predetermined recording time is reproduced according to the recording or time shift reproduction command (S20). Subsequently, the recorded broadcast stored in the storage medium 190 by the instant recording function or the time shift function is processed through the stream processor 120 and the A / V decoder 130, and then the display panel 141 and the speaker 145. Will be output as

During the playback of the recorded broadcast in step S20, if a predetermined command is input through the input unit 160, the input command is not an instruction related to recording and playback, but the actual broadcast viewing mode (Live Mode). It is determined whether or not the command to switch to (S21).

When the command inputted above is the actual broadcast viewing mode, the recording controller 180 determines whether the current viewing mode is the recorded playback mode (Delayed Mode) rather than the actual broadcast (S22). In this case, when determining the current viewing mode, the recording controller 180 checks a control state according to a recent key input command or a key input command stored in the memory 170, or the A / V decoder (120) in the stream processor 120. If the signal output to 130 is a received broadcast signal or a broadcast recorded in the storage medium 190, it may be checked.

If the current viewing mode is the recording and reproducing state (Delayed Mode), the recording controller 180 outputs an on control signal for activating the graphics processing to the graphics engine controller 151 to restart the processing of the graphics data that is turned off (S23). ). The reason for turning on the operation of the graphic engine control unit 151 is that since it is currently displaying a live broadcast, processing of graphic data included in the received real broadcast is required.

Subsequently, the broadcast of the selected channel received through the tuner 110 is signaled through the stream processor 120 and the A / V decoder 130 and then output to the display panel 141 and the speaker 145 (S24). ). In this case, when the time shift function is set in the broadcast receiver, the broadcast signal output through the tuner 110 is stored in the storage medium 190 for a predetermined time regardless of the viewing mode (recording playback mode or the actual broadcast viewing mode). do.

For convenience of the above description, if there is only graph data in the reception broadcast when the recording command is input or the time shift function is set, steps S12 to S15 do not perform the recording function, and the graphics engine is stopped when the recording and playback command is input. Although the processes (S17 to S20) and the processes (S21 to S24) for reactivating the graphics engine when switching from the recording / playback mode to the actual broadcast mode are listed in time series according to the situation, each of the above processes is separate according to the situation. Of course, it can be carried out as or independently.

Accordingly, preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit of the present invention. Modifications and additions should be considered to be within the scope of the following claims.

1 is a flowchart illustrating a method of recording a broadcast program using a general digital broadcast recorder.

2 is a functional block diagram showing an apparatus for controlling broadcast recording and playback in a broadcast receiver according to the present invention.

3A and 3B are flowcharts illustrating a broadcast recording and reproduction control process in a broadcast receiver according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: broadcast receiver 110: tuner

120: stream processing unit 130: A / V decoder

141: display panel 145: speaker

151: graphics engine control unit 155: graphics processing unit

160: input unit 170: memory

180: recording control unit 190: storage medium

Claims (7)

A method of recording a broadcast received on a storage medium and playing back a broadcast recorded on the storage medium, The broadcast receiver determines whether a recording command or a time shift setting command is input while displaying a broadcast; When the recording command or the time shift setting command is input, checking whether a broadcast channel currently received is a broadcast in which only graphic data exists; And Controlling the recording or the time shift function to not operate when the broadcast includes only the graphic data, and controlling the recording or the time shift function to perform the recording or the time shift function when the broadcast includes the video or audio signal; Broadcast recording and playback control method of a broadcast receiver comprising. The method according to claim 1, The determining whether only the graphic data exists includes determining whether a video or audio signal exists in the received broadcast signal by checking an event information table of the graphic data included in the received broadcast signal. Broadcast recording and playback control method of receiver. The method according to claim 1 or 2, Determining whether the current viewing mode is a real broadcast viewing mode or a recording reproducing mode when a recording / playback command is input while displaying the broadcast or during recording; Controlling the graphics engine to process graphic data to be turned off in the actual broadcast viewing mode; And Turning off the graphics engine and reproducing a recording broadcast corresponding to a recording and reproducing command from a storage medium. The method according to claim 3, The checking of the current viewing mode may include checking a recent operation command input from an external device, checking a control state according to a recent operation command, or checking whether a displayed broadcast signal is a received broadcast signal or a recorded broadcast signal. Broadcast recording and playback control method of the broadcast receiver, characterized in that. The method according to claim 3, Determining whether the current viewing mode is the recording reproduction mode or the actual broadcasting viewing mode when a command for switching to the actual broadcasting viewing mode is input while playing the recorded broadcasting; Controlling the graphics engine to process graphic data in the recording play mode; And And controlling the current broadcast to be displayed after the graphic engine is turned on. A method of recording a broadcast received on a storage medium and playing back a broadcast recorded on the storage medium, The broadcast receiver, if the recording and playback command is input while displaying or recording a broadcast, determining whether the current viewing mode is a real broadcast viewing mode or a recording playback mode; Controlling the graphics engine to process graphic data to be turned off in the actual broadcast viewing mode; Playing the recording broadcast corresponding to the recording and reproducing command after turning off the graphic engine; Controlling to turn on a graphic engine for processing graphic data when a command for switching to an actual broadcast viewing mode is input while playing the recorded broadcast; And And controlling to display the actual broadcast received after the graphic engine is turned on. The method according to claim 6, The checking of the current viewing mode may include checking a recent operation command input from an external device, checking a control state according to a recent operation command, or checking whether a displayed broadcast signal is a received broadcast signal or a recorded broadcast signal. Broadcast recording and playback control method of the broadcast receiver, characterized in that.

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