KR20160144225A - Image display apparatus and Method for operating the same - Google Patents

Abstract

A method of operating an image display apparatus according to an embodiment of the present invention includes receiving an electronic program guide (EPG), storing a start time and an end time of a broadcast program scheduled to be recorded based on an electronic program guide, Recording a broadcast of a channel corresponding to a broadcast program scheduled to be recorded from a first point in time prior to the start time, analyzing audio data from a first point of time of the recorded data recorded from the first point of time to a second point of time after the start point of time A step of detecting a discontinuous section and a step of deleting the recorded data before the detected discontinuous section. Accordingly, it is possible to provide a recording function and convenience that satisfies user's preferences during recording by recording only desired broadcasts by eliminating and recording advertisements before, after, or during broadcasting, and efficiently utilize the storage space.

Description

[0001] The present invention relates to an image display apparatus and a method of operating the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus and an operation method thereof, and more particularly, to an image display apparatus and an operation method thereof capable of improving user's convenience by removing an advertisement from an image display apparatus having a recording function and recording the advertisement .

A video display device is a device having a function of displaying an image that a user can view. The user can view the broadcast through the video display device. A video display device displays a broadcast selected by a user among broadcast signals transmitted from a broadcast station on a display. Currently, broadcasting is changing from analog broadcasting to digital broadcasting around the world.

Digital broadcasting refers to broadcasting in which digital video and audio signals are transmitted. Compared to analog broadcasting, digital broadcasting is strong against external noise and has a small data loss, is advantageous for error correction, has a high resolution, and provides a clear screen. Also, unlike analog broadcasting, digital broadcasting is capable of bidirectional service.

Also, the video display device can record contents of various sources and can be used according to convenience of the user. For example, an image display apparatus having a recording function, collectively referred to as a PVR (Personal Video Recorder) or a DVR (Digital Video Recorder), capable of storing content data on a storage medium such as a hard disk, It is possible to store and reproduce contents based on external input signals and the like, thereby satisfying the user's various needs.

On the other hand, the conventional recording function is inconvenient for the user to watch an unwanted advertisement every time the user plays back after the recording is completed.

In order to solve this inconvenience, it is necessary to have a function of recording only a broadcast desired by a user other than an advertisement.

An object of the present invention is to provide a recording function and convenience that satisfies the user's preferences during recording by recording only desired broadcasts by eliminating and recording advertisements before and after broadcasting or during broadcasting.

According to another aspect of the present invention, there is provided a method of operating an image display apparatus, the method comprising: receiving an electronic program guide (EPG); determining, based on an electronic program guide, A step of recording a broadcast of a channel corresponding to a broadcast program scheduled to be recorded from a first point in time before the start time, a step of recording from a first point in the recorded data recorded from the first point of time to a second point in time after the start point of time And a step of deleting the recorded data before the detected discontinuity section.

According to an aspect of the present invention, there is provided an image display apparatus including an interface unit for receiving an electronic program guide (EPG) and an electronic program guide, the start time and end time of a program to be recorded And a control unit for controlling the storage unit to record a broadcast of a channel corresponding to a broadcast program scheduled to be recorded from a first point in time prior to the start time to the storage unit, The audio data from the start point of time to the second point of time after the start point of time is analyzed to detect the discontinuous section and the recorded data before the detected discontinuous section is deleted.

According to the embodiment of the present invention, it is possible to provide a recording function and convenience that satisfies the user's preferences during recording by recording only desired broadcasts by eliminating and recording advertisements before and after broadcasting or during broadcasting.

In addition, according to the embodiment of the present invention, the storage space can be efficiently utilized by recording the advertisement by removing the advertisement.

1A and 1B are views showing an image display system according to an embodiment of the present invention.
2 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.
3 is an example of an internal block diagram of the control unit of FIG.
4 is a flowchart illustrating an operation method of an image display apparatus according to an embodiment of the present invention.
5 to 10 are views referred to explain various examples of the operation method of the image display apparatus according to the embodiment of the present invention.

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

The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

1A and 1B are views showing an image display system according to an embodiment of the present invention.

Referring to FIG. 1A, an image display system 10 according to an embodiment of the present invention may include an image display device 100 and a server 400.

The video display device 100 can receive the content. For example, it is possible to receive a broadcast signal through an antenna, receive an external input signal from an external device via an HDMI terminal or the like, or receive a streaming signal or content data from a server of a predetermined content provider through a network have.

The video display apparatus 100 can process a received broadcast signal, an external input signal, or a streaming signal, display the video on the display 180, and output the audio.

Also, the video display device 100 has a PVR (Personal Video Recorder) and a DVR (Digital Video Recorder) function, and can store contents such as broadcasting in an internal storage unit or other electronic devices connected through a network.

The recording function, which is an additional function of the image display apparatus 100, may provide the user with convenient functions such as scheduled recording and time shift.

For example, if a time shift function is performed when viewing is interrupted, such as when a telephone call or a toilet is required while watching a broadcast program, the received broadcast program can be automatically stored. If playback is selected after the end of the interrupted viewing, the user can view the scene from the scene after the temporarily stopped screen.

Or broadcasting may be continuously displayed in real time, and may be reproduced from the start time point of the time shift recording or any time point when the user selects it.

On the other hand, the server 400 can exchange various data with the image display apparatus 100. For example, an electronic program guide (EPG), content playback can transmit and receive data, including data, content or video display, or information associated with the server.

Meanwhile, the video display device 100 may include a TV, a monitor, a computer, a tablet PC, a portable terminal, and the like capable of broadcasting.

1B, an image display system 10 according to an embodiment of the present invention includes a set-top box 100a, a video display device 100b, and a server 400 having a PVR and a DVR function can do.

The set-top box 100a receives the broadcast signal, processes the signal, and transmits the processed broadcast image to the video display device 100b. The video display device 100b displays the broadcast video on the basis of the received signal, Can be displayed.

To this end, the set-top box 100a can receive a broadcast image through a broadcast receiving unit (not shown) or a network interface unit (not shown) including a tuner unit, a demodulation unit, and the like.

The set-top box 100a can receive a terrestrial broadcast signal, a satellite broadcast signal, a cable broadcast signal, an IPTV broadcast signal, and the like.

On the other hand, the set-top box 100a includes an external device interface unit (not shown) to read media signals from a storage medium such as an optical disk or a memory storage device in addition to receiving broadcast signals, You may.

On the other hand, the video display device 100b may be a monitor, a computer or the like capable of displaying an image, or may be a TV (TV), a tablet PC, a portable terminal or the like having its own broadcast receiver.

On the other hand, the set-top box 100a has a PVR (Personal Video Recorder) function and can record and store contents.

In addition, the set-top box 100a can perform the time shift function and store the recorded data for the time shift function in an internal storage unit or other electronic equipment connected through a network.

On the other hand, the server 400 can exchange various data with the set-top box 100a. For example, an electronic program guide (EPG), content playback can transmit and receive data, including data, information related to the content or image display system.

Hereinafter, embodiments of the present invention will be described with reference to the video display system 10 and the video display device 100 of FIG. 1A, but the present invention is not limited thereto.

For example, the set-top box 100a of FIG. 1B may perform a PVR function similar to the video display apparatus 100 of FIG. 1A.

2 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.

2, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a broadcast receiving unit 105, an external device interface unit 130, a storage unit 140, a user input interface unit 150, (Not shown), a controller 170, a display 180, and an audio output unit 185.

The broadcast receiving unit 105 may include a tuner unit 110, a demodulation unit 120, and a network interface unit 130. Of course, it is possible to design the network interface unit 130 not to include the tuner unit 110 and the demodulation unit 120 as necessary, and to provide the network interface unit 130 with the tuner unit 110 And the demodulation unit 120 are not included.

The tuner unit 110 selects an RF broadcast signal corresponding to a channel selected by the user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through the antenna. Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS / SIF). That is, the tuner unit 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner unit 110 can be directly input to the controller 170.

The tuner unit 110 may receive an RF broadcast signal of a single carrier according to an Advanced Television System Committee (ATSC) scheme or an RF broadcast signal of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

Meanwhile, the tuner unit 110 sequentially selects RF broadcast signals of all broadcast channels stored through a channel memory function among the RF broadcast signals received through the antenna in the present invention, and sequentially selects RF broadcast signals of the intermediate frequency signal, baseband image, . ≪ / RTI >

On the other hand, the tuner unit 110 can include a plurality of tuners in order to receive broadcast signals of a plurality of channels. Alternatively, a single tuner that simultaneously receives broadcast signals of a plurality of channels is also possible.

The demodulator 120 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

The demodulation unit 120 may perform demodulation and channel decoding, and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed.

The stream signal output from the demodulation unit 120 may be input to the controller 170. The control unit 170 performs demultiplexing, video / audio signal processing, and the like, and then outputs an image to the display 180 and outputs audio to the audio output unit 185.

The external device interface unit 130 can transmit or receive data with the connected external device 190. [ To this end, the external device interface unit 130 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 130 can be connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer , And may perform an input / output operation with an external device.

The A / V input / output unit can receive video and audio signals from an external device. Meanwhile, the wireless communication unit can perform short-range wireless communication with other electronic devices.

The network interface unit 135 provides an interface for connecting the video display device 100 to a wired / wireless network including the Internet network. For example, the network interface unit 135 may receive content or data from the Internet or a server 400 provided by a content provider or a network operator via a network.

The storage unit 140 may store a program for each signal processing and control in the control unit 170 or may store the processed video, audio, or data signals.

In addition, the storage unit 140 may perform a function for temporarily storing video, audio, or data signals input to the external device interface unit 130. [ In addition, the recorded program may be stored in a transcoded form in a TS format or a predetermined format.

Although the storage unit 140 of FIG. 2 is provided separately from the control unit 170, the scope of the present invention is not limited thereto. The storage unit 140 may be included in the controller 170.

The user input interface unit 150 transmits a signal input by the user to the control unit 170 or a signal from the control unit 170 to the user.

(Not shown), such as a power key, a channel key, a volume key, and a set value, from the remote control apparatus 200, (Not shown) that senses a user's gesture to the control unit 170 or transmits a signal from the control unit 170 to the control unit 170 It is possible to transmit it to the sensor unit (not shown).

The control unit 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner unit 110 or the demodulation unit 120 or the external device interface unit 130 so as to output the video or audio output Signals can be generated and output.

The video signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the video signal. Also, the image signal processed by the controller 170 may be input to the external output device through the external device interface unit 130.

The audio signal processed by the control unit 170 may be output to the audio output unit 185 as an audio signal. The audio signal processed by the controller 170 may be input to the external output device through the external device interface unit 130. [

Although not shown in FIG. 2, the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG.

In addition, the control unit 170 can control the overall operation in the video display device 100. [ For example, the control unit 170 may control the tuner unit 110 to control the tuning of the RF broadcast corresponding to the channel selected by the user or the previously stored channel.

In addition, the controller 170 may control the image display apparatus 100 according to a user command or an internal program input through the user input interface unit 150.

Meanwhile, the control unit 170 may control the display 180 to display an image. At this time, the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

Meanwhile, the controller 170 may generate a 3D object for a predetermined 2D object among the images displayed on the display 180, and display the 3D object. For example, the object may be at least one of a connected web screen (newspaper, magazine, etc.), EPG (Electronic Program Guide), various menus, widgets, icons, still images, moving images, and text.

Such a 3D object may be processed to have a different depth than the image displayed on the display 180. [ Preferably, the 3D object may be processed to be projected relative to the image displayed on the display 180.

On the other hand, the control unit 170 can recognize the position of the user based on the image photographed from the photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 can be grasped. In addition, the x-axis coordinate and the y-axis coordinate in the display 180 corresponding to the user position can be grasped.

Although not shown in the drawing, a channel browsing processing unit for generating a channel signal or a thumbnail image corresponding to an external input signal may be further provided. The channel browsing processing unit receives the stream signal TS output from the demodulation unit 120 or the stream signal output from the external device interface unit 130 and extracts an image from an input stream signal to generate a thumbnail image . The generated thumbnail image may be stream-decoded together with a decoded image and input to the controller 170. The control unit 170 may display a thumbnail list having a plurality of thumbnail images on the display 180 using the input thumbnail image.

At this time, the thumbnail list may be displayed in a simple view mode displayed on a partial area in a state where a predetermined image is displayed on the display 180, or in a full viewing mode displayed in most areas of the display 180. The thumbnail images in the thumbnail list can be sequentially updated.

The display 180 converts a video signal, a data signal, an OSD signal, a control signal processed by the control unit 170, a video signal, a data signal, a control signal, and the like received from the external device interface unit 130, .

The display 180 may be a PDP, an LCD, an OLED, a flexible display, or the like, and may also be capable of a 3D display.

In order to view the three-dimensional image, the display 180 may be divided into an additional display method and a single display method.

The single display method can implement a 3D image only on the display 180 without a separate additional display, for example, a glass or the like, and examples thereof include a lenticular method, a parallax barrier, and the like Various methods can be applied.

On the other hand, in addition to the display 180, the additional display method can implement a 3D image using an additional display such as a glass for 3D as a viewing apparatus. For example, various methods such as a head mount display (HMD) Can be applied.

On the other hand, the glasses type can be further divided into a passive type such as a polarizing glasses type and an active type such as a shutter glass type. Also, the head mount display type can be divided into a passive type and an active type.

Meanwhile, the display 180 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 185 receives the signal processed by the control unit 170 and outputs it as a voice.

A photographing unit (not shown) photographs the user. The photographing unit (not shown) may be implemented by a single camera, but the present invention is not limited thereto, and may be implemented by a plurality of cameras. On the other hand, the photographing unit (not shown) may be embedded in the image display device 100 on the upper side of the display 180 or may be disposed separately. The image information photographed by the photographing unit (not shown) may be input to the control unit 170.

The control unit 170 can detect the gesture of the user based on each of the images photographed from the photographing unit (not shown) or the signals sensed from the sensor unit (not shown) or a combination thereof.

The remote control apparatus 200 transmits the user input to the user input interface unit 150. [ To this end, the remote control apparatus 200 can use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like. Also, the remote control apparatus 200 can receive the video, audio, or data signal output from the user input interface unit 150 and display it or output it by the remote control apparatus 200.

Meanwhile, the video display device 100 may be a digital broadcast receiver capable of receiving a fixed or mobile digital broadcast.

Meanwhile, a block diagram of the image display apparatus 100 shown in FIG. 2 is a block diagram for an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display apparatus 100 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

2, the video display apparatus 100 does not include the tuner unit 110 and the demodulation unit 120 shown in FIG. 2, but may be connected to the network interface unit 130 or the external device interface unit 135 to receive and reproduce broadcast content.

Hereinafter, embodiments of the present invention will be described with reference to the video display system 10 and the video display device 100 of FIG. 1A, but the present invention is not limited thereto.

For example, the set-top box 100b of FIG. 1B may include a broadcast receiving unit (not shown), a network interface unit (not shown), a display unit A storage unit (not shown), a control unit (not shown), a user input interface unit (not shown), and an external device interface unit (not shown).

In addition, the set-top box 100b can store recording data in a storage unit connected to the set-top box or via a network, and transmit the signals to the connected video display device 100b to reproduce the content.

3 is an example of an internal block diagram of the control unit of FIG.

The control unit 170 includes a demultiplexing unit 310, an audio processing unit 315, an image processing unit 320, a processor 330, an OSD generating unit 340 A mixer 345, a frame rate conversion unit 350, An audio processing unit (not shown), and a data processing unit (not shown).

The demultiplexer 310 demultiplexes the input stream. For example, when an MPEG-2 TS is input, it can be demultiplexed into video, audio, and data signals, respectively. The stream signal input to the demultiplexer 310 may be a stream signal output from the tuner 110 or the demodulator 120 or the external device interface 130.

The audio processing unit 315 in the control unit 170 receives the demultiplexed audio signal from the demultiplexing unit 310 or the audio signal directly input from the network interface unit 135 or the external device interface unit 130, Audio signal processing can be performed. To this end, the audio processing unit 315 may include various decoders.

In addition, the audio processing unit 315 in the control unit 170 may include a mixer for mixing audio signals decoded by various decoders, in particular audio signals of various channels. The audio signal mixed in the mixer may be transmitted to the audio output unit 185.

The audio processing unit 315 in the control unit 170 may process the base, the treble, the volume control, or the like, or may perform the sound field signal processing automatically.

On the other hand, the audio signal processed by the audio signal becomes sound output through the audio output unit 185.

The image processing unit 320 may perform image processing of the demultiplexed image signal. To this end, the image processing unit 320 may include an image decoder 225 and a scaler 235. [

The video decoder 225 decodes the demultiplexed video signal and the scaler 235 performs scaling so that the resolution of the decoded video signal can be output from the display 180.

The video decoder 225 may include a decoder of various standards.

On the other hand, the image signal decoded by the image processing unit 320 can be divided into a case where there is only a 2D image signal, a case where a 2D image signal and a 3D image signal are mixed, and a case where there is only a 3D image signal.

For example, when an external video signal input from an external device or a broadcast video signal of a broadcast signal received from the tuner unit 110 includes only a 2D video signal, when a 2D video signal and a 3D video signal are mixed, A signal processing is performed in the control unit 170, particularly the image processing unit 320 or the like, and a mixed signal of a 2D image signal, a 2D image signal and a 3D image signal, a 3D image A signal can be output.

Meanwhile, the image signal decoded by the image processing unit 320 may be a 3D image signal in various formats. For example, a 3D image signal composed of a color image and a depth image, or a 3D image signal composed of a plurality of view image signals. The plurality of viewpoint image signals may include, for example, a left eye image signal and a right eye image signal.

The processor 330 may control the overall operation in the image display apparatus 100 or in the control unit 170. [ For example, the processor 330 may control the tuner 110 to select a channel selected by the user or an RF broadcast corresponding to a previously stored channel.

In addition, the processor 330 may control the image display apparatus 100 by a user command or an internal program input through the user input interface unit 150. [

In addition, the processor 330 may perform data transfer control with the network interface unit 135 or the external device interface unit 130.

In addition, the processor 330 controls the overall PVR function, controls to store a predetermined broadcast program in the storage unit 140 based on a recording command, or transmits the recorded data to another electronic apparatus can do.

The processor 330 may control operations of the demultiplexing unit 310, the image processing unit 320, the OSD generating unit 340, and the like in the controller 170.

The OSD generation unit 340 generates an OSD signal according to a user input or by itself. For example, based on a user input signal, a signal for displaying various information in a graphic or text form on the screen of the display 180 can be generated. The generated OSD signal may include various data such as a user interface screen of the video display device 100, various menu screens, a widget, and an icon. In addition, the generated OSD signal may include a 2D object or a 3D object.

The OSD generating unit 340 can generate a pointer that can be displayed on the display based on the pointing signal input from the remote control device 200. [ In particular, such a pointer may be generated by a pointing signal processing unit, and the OSD generating unit 340 may include such a pointing signal processing unit (not shown). Of course, a pointing signal processing unit (not shown) may be provided separately from the OSD generating unit 340.

The mixer 345 may mix the OSD signal generated by the OSD generator 340 and the decoded video signal processed by the image processor 320. At this time, the OSD signal and the decoded video signal may include at least one of a 2D signal and a 3D signal. The mixed video signal is supplied to a frame rate converter 350.

A frame rate converter (FRC) 350 can convert the frame rate of an input image. On the other hand, the frame rate converter 350 can output the frame rate without conversion.

The formatter 360 may arrange the left eye image frame and the right eye image frame of the frame rate-converted 3D image. The left eye glass of the 3D viewing apparatus 195 and the synchronization signal Vsync for opening the right eye glass can be output.

The formatter 360 receives the mixed signal, i.e., the OSD signal and the decoded video signal, from the mixer 345, and separates the 2D video signal and the 3D video signal.

In the present specification, a 3D video signal means a 3D object. Examples of the 3D object include a picuture in picture (PIP) image (still image or moving picture), an EPG indicating broadcasting program information, Icons, texts, objects in images, people, backgrounds, web screens (newspapers, magazines, etc.).

On the other hand, the formatter 360 can change the format of the 3D video signal.

Meanwhile, the formatter 360 may convert the 2D video signal into a 3D video signal. For example, according to a 3D image generation algorithm, an edge or a selectable object is detected in a 2D image signal, and an object or a selectable object according to the detected edge is separated into a 3D image signal and is generated . At this time, the generated 3D image signal can be separated into the left eye image signal L and the right eye image signal R, as described above.

Although not shown in the drawing, it is also possible that a 3D processor (not shown) for 3-dimensional effect signal processing is further disposed after the formatter 360. The 3D processor (not shown) can process the brightness, tint, and color of the image signal to improve the 3D effect. For example, it is possible to perform signal processing such as making the near field clear and the far field blurring. On the other hand, the functions of such a 3D processor can be merged into the formatter 360 or merged into the image processing unit 320. [

Meanwhile, the audio processing unit (not shown) in the control unit 170 can perform the audio processing of the demultiplexed audio signal. To this end, the audio processing unit (not shown) may include various decoders.

In addition, the audio processing unit (not shown) in the control unit 170 can process a base, a treble, a volume control, and the like.

The data processing unit (not shown) in the control unit 170 can perform data processing of the demultiplexed data signal. For example, if the demultiplexed data signal is a coded data signal, it can be decoded. The encoded data signal may be EPG (Electronic Program Guide) information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel.

3 shows that the signals from the OSD generating unit 340 and the image processing unit 320 are mixed in the mixer 345 and then 3D processed in the formatter 360. However, May be located behind the formatter. That is, the output of the image processing unit 320 is 3D-processed by the formatter 360, and the OSD generating unit 340 performs 3D processing together with the OSD generation. Thereafter, the processed 3D signals are mixed by the mixer 345 It is also possible to do.

Meanwhile, the block diagram of the controller 170 shown in FIG. 3 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to the specifications of the control unit 170 actually implemented.

In particular, the frame rate converter 350 and the formatter 360 are not provided in the controller 170, but may be separately provided.

FIG. 4 is a flowchart illustrating an operation method of an image display apparatus according to an exemplary embodiment of the present invention, and FIGS. 5 to 10 are flowcharts illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention, to be.

4, an image display apparatus 100 according to an exemplary embodiment of the present invention may receive an electronic program guide (EPG). In operation S410,

The EPG may be received from the server 400 through the network interface 135 or may be extracted from the EPG included in the PSIP information of the received broadcast program.

On the other hand, the storage unit 140 may store the start time and the end time of the broadcast program scheduled to be recorded based on the electronic program guide (EPG) (S420)

The control unit 170 may control to record the broadcast of the channel corresponding to the broadcast program scheduled to be recorded from the first time point before the start time in the storage unit at step S430.

The tuner unit 110 of the broadcast receiving unit 105 can receive a broadcast signal corresponding to the selected channel and the demodulating unit 120 performs a demodulating operation on the signal received / processed by the tuner unit 110 .

In the case of digital broadcasting, a transport stream including a video signal (MPEG-2 Video), an audio signal (AC3 Audio), Program and System Information Protocol (PSIP) data, and the like can be used.

In digital broadcasting using the transport stream of the 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, and the video display device displays a plurality of broadcast programs included in the transport stream It is possible to demultiplex and select one broadcast program.

The demodulator 120 may perform a demodulation and a channel decoding to output a transport stream (TS). At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed, and the stream signal output from the demodulation unit 120 may be input to the controller 170 or another block.

Meanwhile, the controller 170 may perform demultiplexing, video / audio signal processing, and the like, and then output an image to the display 180 and output audio to the audio output unit 185.

In addition, the control unit 170 receives the transport stream signal. Or a demultiplexed video signal, audio signal or data signal, or video / audio signal processed signal in the storage unit 140 or the like.

The video display apparatus 100 may record the received broadcast program in the storage unit 140 based on a recording command (S430).

The recording command may include an automatic scheduled recording command using an electronic program guide (EPG) or the like, a manual scheduled recording command manually inputting conditions such as a time and a channel, A direct recording command, a time-shift recording command which can store a received broadcast program in real time, change the time interval and reproduce it, and the like.

On the other hand, the controller 170 controls the program information (broadcasting station, program name) based on the name information and the time information included in the PSIP data, the EPG information included in the EIT, or the online EPG information received through the network. , The program start time, and the program end time.

Referring to FIG. 5, the control unit 170 transmits a broadcast of a channel corresponding to a broadcast program scheduled to be recorded from a first time t1 before the start time (10:00) of the program scheduled to be recorded to the storage unit 140 in step S430. In step S430,

That is, recording can be started from a first time point t1 before a predetermined time from the program start time determined by the EPG.

The control unit 170 analyzes the audio data from the first time point t1 to the second time point t2 of the recording data recorded from the first time point t1 to the second time point t2 after the start time, (S440)

Here, the first time point t1 and the second time point t2 may be variously set. For example, when the EPG is set to 5 minutes before and after the program start time (10:00), the first time point t1 is 9:55 and the second time point t2 is 10:05 minutes Will be. Alternatively, the first point of time t1 may be set to 9:50 and the second point of time t2 may be set to 10:10 minutes, or the first point of time t1 may be set to 9:55 asymmetrically, t2) may be set to 10:10 minutes.

Meanwhile, according to the embodiment, the second time point t2 may be set as the ending point of the recording. That is, the analyzing operation can be continuously performed from the first time t1 before the program start time (10:00) on the EPG until the end of the recording. In this case, intermediate advertisements inserted in the middle of a broadcast program can be detected.

On the other hand, the cut-off period may be a silent period of sound or a period in which the amount of change is equal to or greater than a reference value.

6 (a) shows an example of a waveform of an audio signal, and FIG. 6 (b) shows an example of energy of an audio signal.

6 (a) and 6 (b), it is assumed that a silence period of sound is detected after the start point P1 of the audio signal, or intervals P2, P3, P4, P5, P6, can do. The intervals (P2, P3, P4, P5, P6, P7) in which the silence or change amount is equal to or higher than the reference value can be discriminated as the break interval.

The control unit 170 may detect the discontinuous section by analyzing the sound energy and the sound pressure of each of the audio data.

In this case, the controller 170 may calculate the sound pressure of the audio data, calculate sound pressure for each frequency band and frequency band through frequency conversion, and compare the calculated values to detect the cut-off period .

That is, the control unit 170 may compare the sound energy and sound pressure values of the audio data with each other in the back and forth direction, and determine a silence period without a signal and a period in which the variation amount is equal to or greater than a reference value.

FIG. 7 shows an example of an audio signal by a musical instrument such as a drum, and FIG. 8 shows an example of an audio signal by human voice.

As illustrated in FIG. 7 and FIG. 8, different forms can be obtained when audio signals of human voice and music are viewed from the viewpoint of energy by waveform or frequency band. The sudden change of the audio signal component included in the audio signal can also be used as a signal for discriminating the break interval since the content of the content changes.

On the other hand, advertisements between programs usually broadcast a plurality of advertisements continuously. Thus, not only is there a cut-off between the program to be recorded and the advertisement, but there is a discontinuity between the attached sound, since the advertisement carries several ads.

The present invention detects such a disconnection and uses the disconnection interval as a signal for discriminating whether or not to advertise.

That is, it is possible to distinguish the preceding or succeeding segment from the advertisement segment. In addition, since the start time and the end time of the broadcast program scheduled to be recorded are determined from the EPG information, it can be determined whether the preceding or succeeding section of the break interval is the advertisement video.

For example, it is possible to discriminate a broadcast before the detected disconnect interval as an advertisement broadcast. Particularly, if a break interval is detected before a start time or within a predetermined range, it can be determined that the interval before the break interval is an advertisement video.

Accordingly, the controller 170 may control to delete the recorded data before the detected disconnect interval (S450)

Therefore, according to the present invention, it is possible to determine whether or not the advertisement is used by using the cutoff period, to separate the advertisement and the watching program, and to record only the viewing program.

In the meantime, according to the embodiment, similarly to the start time in the end time period of the end time of the recorded broadcast program, the control unit 170 determines the third time point t3 before the end time (11:00) ) To the fourth time point (t4) after the end time (S460)

In this case, the control unit 170 may control to delete the recorded data after the detected discontinuity interval (S470)

Alternatively, if the second time point t2 is set as a recording end point and the advertisement analysis operation is performed from the first point of time t1 to the end of recording, the second point of time t2 is continuously monitored, If the discontinuity section is detected in the peripheral section, the data after the discontinuity section can be deleted and the recording can be terminated.

The present invention stores start time and end time of a channel scheduled to be recorded using EPG information. In this case, an advertisement detection technique using voice is started around the start time of a broadcast program scheduled to be recorded.

The image display apparatus 100 can compare the energy of each frequency band and the sound pressure to find out the sound cutoff and cut off the disconnected portion and store only the TV program.

In the current DTV broadcasting, if the EPG information is used, the start time and the end time of the regular program can be judged quite accurately, but the start time and the end time of the sports program, various special programs, and live broadcast programs may be different from the scheduled time. In addition, there is a disadvantage that it can not be judged by separating each advertisement.

On the other hand, the analog TV uses Internet EPG information to grasp the start time of the regular program. However, since the Internet EPG judges that the time of 5 minutes is the start time of the program, there is a disadvantage that the advertisement time and the regular program can not be distinguished accurately. In addition, there were constraints that can not be judged by separating the advertisement itself.

 Thus, there was no way to distinguish the correct regular program from the commercial on all TV channels.

 By addressing these constraints, it is necessary to support an action to distinguish advertisements from regular programs on all TV channels.

Therefore, the present invention can start recording earlier than the start time of the recording scheduled program acquired through the EPG, distinguish the regular program from the advertisement using the voice, remove the advertisement, and record the advertisement.

Accordingly, the advertisement can be removed and only the content desired by the user can be recorded.

Also, recording can be started from the correct time without distinguishing between DTV broadcasting and analog broadcasting, and more accurate information can be provided to the user.

Meanwhile, in the operation method of the image display apparatus according to the embodiment of the present invention, the audio data of the recorded recording data to be deleted may be separately stored in the storage unit 140. That is, the audio data corresponding to the advertisement is converted into a database, and it is possible to quickly determine whether or not the advertisement is searched when the same audio data is searched for the subsequent advertisement detection.

In addition, when a plurality of discontinuous sections are detected, timing information on the plurality of discontinuous sections and audio data corresponding to the plurality of discontinuous sections may be stored.

Typically, advertisements between programs are broadcast continuously with a plurality of advertisements. Not only is there a disconnect between the program to be recorded and the advertisement, but because there are several ads attached to the advertisement, there is a disconnect between the attached sounds.

Accordingly, when a plurality of discontinuity intervals are detected, even if discontinuity intervals are detected at regular intervals of 15 seconds, 25 seconds, or the like, it can be determined that the discontinuity intervals correspond to the advertisement images.

Also in this case, the timing information for the plurality of cut-off periods and the audio data corresponding to the plurality of cut-off periods are converted into a database, and if the same audio data is searched at the subsequent advertisement detection, .

In addition, the method of operating the video display device according to the embodiment of the present invention may further include storing the identification information and the recording time information of the broadcast program. For example, information such as program information, program start time, recording start time, recording end time, and the like are stored together with metadata so that later utilization, search, and the like can be made easier.

FIG. 9 illustrates a case in which an advertisement image before and after a broadcast program is discriminated and removed.

First, it is assumed that the first program 910 and the second program 930 are different broadcast programs. When the first program 910 or the second program 930 is recorded on a TV using a DVR, The advertisement 920 can be recorded at the same time.

The present invention can extract and remove the ad 920 using speech to remove the ad 920. [

The EPG can be used to grasp the start and end times of the approximate broadcast and to analyze pre-or post-advertisements by analyzing the surrounding time-zone audio signals of the start time and / or end time.

For example, the audio signal is analyzed while recording from the start time of the second program 930. Since the disconnection occurs between the advertisement 920 and the viewing program 930, it is possible to separate the dictionary advertisement 920 and the viewing program 930 by discriminating the section of the disconnection and record only the viewing program 930. [

Alternatively, the audio signal is analyzed while recording from the start time of the first program 910. Since the disconnection occurs between the viewing program 910 and the after-ad 920 after the end of the viewing program 910, the disconnecting section is discriminated and the viewing program 910 and the after-advertisement 920 are separated from each other, 910) can be recorded.

On the other hand, assuming that the first program 910 and the second program 930 are the same broadcast program, the intermediate advertisement 920 can be inserted into one recording target program. At this time, unnecessary intermediate advertisement 920 is recorded together.

Accordingly, the audio signals are continuously monitored and analyzed while recording from the start time of the programs 910 and 930 to be recorded.

After detecting two or more break intervals including a break interval between the programs to be recorded 910 and 930 and the advertisement 920 and a break interval between the advertisements 920, Can be removed.

10 is a diagram illustrating a part of an internal block diagram of a video display device according to an embodiment of the present invention.

 Referring to FIG. 10, the controller 1070 can check the time information of the recording target program from the EPG or online EPG, and obtain audio data corresponding to a predetermined range from the starting point of the program.

The audio data may be an audio signal demultiplexed by the demultiplexing unit 310 or an audio signal input directly from the network interface unit 135 or the external device interface unit 130. To this end, various decoders may be provided inside or outside the control unit 1070.

The sound analyzer 1030 can fetch the approximate time information of the recording target program, in particular the program start time information and the end time information, from the EPG or online EPG.

 The sound analyzer 1030 can acquire audio information (audio signal) from the TV sound module 115 in a predetermined range, for example, the previous 5 minutes and the following 5 minutes, starting from the program start time.

The sound analyzer 1030 and the TV sound module 1015 may be the processor 330 and the audio processor 315 described with reference to FIG.

Alternatively, the Sound Analyzer 1030 and the TV Sound module 1015 may be separately provided inside or outside the controller 1070.

The control unit 1070 can analyze data obtained from the TV sound module 1015 using sound pressure information and frequency information of a waveform.

There is a discontinuity of speech between advertisement, advertisement, advertisement and regular program, and there is also frequency cutoff. Accordingly, in order to detect this, the sound analyzer 1030 calculates the sound pressure for the sound transmitted from the TV sound module 1015, and calculates the sound pressure of the entire frequency and frequency band through frequency conversion.

For example, the sound pressure of each band of a low frequency band in which a sound mainly exists is separately calculated, and the sound pressure of each band of a high frequency band in which music is mainly present is separately calculated.

This change is not significant in real-world advertising, but the change between ads, ads, ads and regular programs is dramatic.

Meanwhile, the analysis result of the audio signal can be stored in the storage unit 1040, and can be managed as a database.

 When the change in sound pressure and frequency is detected, the time receiver 1041 can record the time. In the case of an advertisement, the time is relatively uniform such as 15 seconds, 30 seconds, 45 seconds, 60 seconds, etc. If the interval between the recorded times is the same as the above time, it can be judged as an advertisement.

In the case of a voice determined as an advertisement, the stream receiver 1042 cuts it and stores it separately so that it can be utilized as future data.

According to the present invention, the start time of the accurate regular program can be known regardless of the DTV channel and the analog channel, and it is possible to record only the correct regular program.

In addition, by separating only the advertisement, it can be used for the relation between the regular program and the advertisement and the pattern processing. For example, if there are many advertisements for cosmetics by analyzing advertisements in front of a drama channel, the advertisements can be utilized, and advertisements in front of a sports channel can be analyzed.

Also, it is possible to process information such as the time when the same advertisement is reproduced, and collect information such as which advertisement is currently the most publicized. There is an advantage that this information can be used in more places.

The method of operating the image display apparatus and the image display system according to the present invention is not limited to the configuration and method of the embodiments described above, All or some of them may be selectively combined.

Meanwhile, the method of operating the video display device and the video display system of the present invention can be implemented as a code that can be read by a processor in a video-display device and a recording medium readable by a processor included in the video display system. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium that can be read by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet . In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

Broadcast receiver: 105
External device interface part: 130
Storage: 140
User input interface part: 150
Control section: 170
Display: 180
Audio output: 185

Claims (10)

Receiving an electronic program guide (EPG);
Storing a start time and an end time of a broadcast program scheduled to be recorded based on the electronic program guide;
Recording a broadcast of a channel corresponding to a broadcast program scheduled to be recorded from a first time point before the start time;
Analyzing audio data from the first time point to a second time point after the start time point of the recorded data recorded from the first time point to detect a break interval; And
And deleting recorded video data prior to the detected disconnect interval. The method according to claim 1,
Wherein the cut-off section is a silence section of the sound or a section in which the amount of change is equal to or greater than a reference value. The method according to claim 1,
Wherein the step of detecting the cut-off section detects the cut-off period by comparing the sound energy of each of the audio data with the sound pressure. The method of claim 3,
Wherein the step of detecting a cut-off interval includes calculating a sound pressure of the audio data, calculating a sound pressure of the entire frequency and a frequency band by frequency conversion, and comparing the calculated values to detect the cut- Method of operation of the device. The method according to claim 1,
Analyzing audio data from a third time point before the end time to a fourth time point after the end time among the recorded data to detect a cut-off period;
And deleting recorded video data after the detected discontinuity section. The method according to claim 1,
And determining that the broadcast before the detected break interval is an advertisement broadcast. The method according to claim 1,
And storing the audio data of the deleted recording data separately in a storage unit. The method according to claim 1,
And storing timing information for the plurality of discontinuous sections and audio data corresponding to the plurality of discontinuous sections when a plurality of discontinuous sections are detected. An interface unit for receiving an electronic program guide (EPG);
A storage unit for storing a start time and an end time of a broadcast program scheduled to be recorded based on the electronic program guide; And
And a control unit for controlling the storage unit to record a broadcast of a channel corresponding to a broadcast program scheduled to be recorded from a first time point before the start time,
Wherein the controller analyzes the audio data from the first time point to the second time point after the start time point of the recorded data recorded from the first time point to detect a cutoff interval and detects the cutoff interval before the detected cutoff interval And a control unit for controlling the display unit to display the image. 10. The method of claim 9,
Wherein the control unit calculates the sound pressure of the audio data, calculates the sound pressure for each of the whole frequency and the frequency band through frequency conversion, and compares the calculated values to detect the cut-off period.

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