KR20150074577A - Video display device and operating method thereof - Google Patents

Abstract

Disclosed is a video display device playing contents. A control part obtains a program starting base and a program ending base, and finds a starting point of a program and an ending point of a program based on at least one characteristic information corresponding to each of the program starting base and the program ending base. A display part displays the contents. At least one characteristic information includes at least one among video characteristic information and audio characteristic information.

Description

TECHNICAL FIELD [0001] The present invention relates to a video display device and an operation method thereof.

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 for finding a specific point of contents. More specifically, the present invention relates to an image display apparatus that finds a start point and an end point of a program, and starts and ends reservation recording accordingly. The present invention is also an invention for finding a previous playback point for the same content.

Many video display devices receiving real-time content provide a scheduled recording function. At this time, the setting of the start and end points of the scheduled recording is generally set by a user input regarding the scheduled recording time or is set by information on the program start time and the end time among electronic program guide (EPG) information . In particular, when the entire program is scheduled to be recorded, it is common to select the program in the EPG to set the scheduled recording.

However, according to the circumstances of the broadcasting company, the program start time frequently changes slightly from the program scheduled start time. Also, when the program start time is changed, the program start time and end time included in the EPG information are often not changed. Accordingly, the scheduled recording may start later than the actual program start time. Also, the scheduled recording can be terminated sooner than the actual program end time. Accordingly, the user may not be able to record the entire program that he / she wants to record. Therefore, there is a need for a method that can precisely determine the start point and the end point of the program to be scheduled.

In addition, due to the development of mobile terminals and the development of communication technologies, the same contents can be reproduced from various devices. When the user stops playing the content and then plays back the content on another device, the user finds the playback end point, which is the point at which the user previously stopped the playback, and then plays back the content again. In this case, it is time consuming and inaccurate to find the reproduction end point depending on the user input and the user's memory. Also, when only the playback time is recorded, there is a problem that the playback end point can not be found if the same content is stored in another format. Therefore, there is a need for a method for quickly and precisely determining the reproduction end point.

An embodiment of the present invention is to provide an image display apparatus and a method of operating an image display apparatus to precisely locate a specific point of a program. More specifically, one embodiment of the present invention provides an image display apparatus and an operation method of an image display apparatus for searching for a start point and an end point of a program in a recording. Specifically, one embodiment of the present invention is to provide an image display apparatus and an operation method of an image display apparatus that accurately find a start point and an end point of reservation recording. Specifically, another embodiment of the present invention is to provide an image display apparatus and an operation method of a video display apparatus that accurately find a reproduction end point where reproduction of a user's content has been completed.

An image display apparatus for reproducing contents according to an exemplary embodiment of the present invention obtains a program start criterion and a program termination criterion and calculates a program start criterion and a program termination criterion based on at least one characteristic information corresponding to the program start criterion and the program termination criterion, A control unit for finding a point and an end point of the program; And a display unit displaying the content, wherein the at least one characteristic information includes at least one of video characteristic information and audio characteristic information.

According to an embodiment of the present invention, there is provided a method of operating an image display apparatus for reproducing content, comprising: obtaining a program start criterion and a program termination criterion; Searching for a starting point of the program based on at least one characteristic information corresponding to the program starting criterion; And searching for an end point of the program based on at least one characteristic information corresponding to the program end criterion, wherein the at least one characteristic information includes at least one of video characteristic information and audio characteristic information.

An embodiment of the present invention provides an image display apparatus and an operation method of an image display apparatus for precisely finding a specific point of a program. Specifically, one embodiment of the present invention provides an image display apparatus for searching for a start point and an end point of a program in a recording, and a method of operating the image display apparatus. Specifically, one embodiment of the present invention provides an image display apparatus and an operation method of an image display apparatus that accurately find a start point and an end point of a reservation recording. More specifically, another embodiment of the present invention provides a video display device and a method of operating the video display device in which a user accurately finds a playback end point at which a user has finished playing back content.

1 is a block diagram illustrating a configuration of an image display apparatus according to an exemplary embodiment of the present invention.
2 is a diagram showing an embodiment of a method of controlling the operation of the image display apparatus using the remote control apparatus.
FIG. 3 is a diagram for explaining an image display apparatus according to an embodiment of the present invention searching for a starting point of a program using characteristic information.
4 is a diagram for explaining an image display apparatus according to an embodiment of the present invention searching for an end point of a program using characteristic information.
FIG. 5 is a block diagram illustrating a data flow between a content transmitting unit, an image display device, a characteristic information database, and a reserved recording list database according to an exemplary embodiment of the present invention.
FIG. 6 is a flowchart illustrating an operation of the video display apparatus according to an exemplary embodiment of the present invention to find a start point and an end point of a program and to perform scheduled recording.
7 is a block diagram illustrating data flow between a content transmitter, an image display device, an external device, and a playback record database according to another embodiment of the present invention.
FIG. 8 is a flowchart illustrating an operation of the video display apparatus according to another embodiment of the present invention to find and reproduce a playback end point at which a user ends playback of content.
FIG. 9 shows an image display apparatus according to another embodiment of the present invention displaying a playback end point where a user ends playback of a content on a progress bar.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

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

1, an image display apparatus 100 includes a first tuner 120, a second tuner 125, an external signal input unit 128, a first demodulating unit 130, a second demodulating unit 135, And may include an analog / digital conversion unit 140, an interface unit 150, a control unit 20, a channel browsing processing unit 170, a storage unit 175, a display unit 30 and an audio output unit 185 .

The first tuner 120 selects an RF broadcast signal corresponding to a channel selected by a user from an RF (Radio Frequency) broadcast signal received through an antenna, converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video / audio signal .

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal DIF1, and if it is an analog broadcast signal, it is converted into an analog baseband video / audio signal CVBS 1 / SIF. That is, the first tuner 120 may be a hybrid tuner capable of processing a digital broadcast signal and an analog broadcast signal. The analog baseband video / audio signal (CVBS 1 / SIF) output from the first tuner 120 may be directly input to the control unit 20.

Also, the first tuner 120 can receive RF carrier signals of a single carrier according to an Advanced Television Systems Committee (ATSC) scheme or RF carriers of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

Similarly to the first tuner 120, the second tuner 125 selects an RF broadcast signal corresponding to a channel selected by the user from among RF (Radio Frequency) broadcast signals received through the antenna, To an intermediate frequency signal or a baseband video / audio signal.

The second tuner 125 sequentially selects a corresponding RF broadcast signal of all broadcast channels previously stored through the channel memory function among the RF broadcast signals received through the antenna and periodically selects the corresponding RF broadcast signal, It is also possible to convert it into a baseband video / audio signal. In the embodiment of the present invention, images of other channels previously stored are also displayed in a thumbnail form on at least a part of the screen, so that it is possible to sequentially receive RF broadcasting signals of all channels previously stored.

For example, the first tuner 120 converts a main RF broadcast signal selected by the user into an intermediate frequency signal or a baseband video / audio signal, and the second tuner 125 converts all RF broadcasts except for the main RF broadcast signal It is possible to sequentially select a signal (sub-RF broadcast signal) or all RF broadcast signals serially / periodically and convert it into an intermediate frequency signal or a baseband video / audio signal.

The first demodulator 130 receives the digital IF signal DIF 1 converted by the first tuner 120 and performs a demodulation operation.

For example, when the digital IF signal DIF 1 output from the first tuner 120 is of the ATSC scheme, the first demodulator 130 performs 8-VSB (8-Vestigal Side Band) demodulation. Also, the first demodulator 130 may perform channel decoding.

For this, the first demodulator 130 includes a Trellis decoder, a de-interleaver, and a Reed Solomon decoder to perform trellis decoding and deinterleaving de-interleaving and reed solomon decoding.

For example, when the digital IF signal DIF 1 output from the first tuner 120 is a DVB scheme, the first demodulator 130 performs COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. Also, the first demodulator 130 may perform channel decoding.

To this end, the first demodulator 130 may include a convolution decoder, a deinterleaver, a Reed-Solomon decoder, and the like to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The external signal input unit 128 performs signal input with an external device. To this end, the external signal input unit 128 may include an A / V input / output unit and a wireless communication unit.

1, the image display apparatus 100 includes two tuners 120 and 125. However, the present invention is not limited to this, and it is also possible to include one or more tuners.

The external signal input unit 128 is connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camcorder, a computer To the control unit (20) in the video display device (100). Further, the video, audio, and data signals processed in the control unit 20 can be output to another external device.

The A / V I / O unit has an Ethernet port, a USB port, a Composite Video Banking Sync (CVBS) port, a component port, an S-video port (analog port) A DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, an IEEE 1394 terminal, a SPDIF terminal, a liquid HD terminal, a SCART terminal,

Though not shown in the drawing, various input signals input through the external signal input unit 128 may be input to a channel browsing processing unit 170, which will be described later, and a thumbnail image extracting process may be performed.

For example, the analog signal input through the CVBS terminal and the S-video terminal may be converted into a digital signal and input to the channel browsing processing unit 170, as described above. The digital signal input through the other input terminal can be directly input to the channel browsing processing unit 170 without analog / digital conversion.

Here, the digital signal output from the external signal input unit 128 may be a stream signal. For example, MPEG-2 TS (Transprt) in which MPEG-2 standard video, Dolby AC- Stream, a multiplexed MNT stream, and a multiplexed MPEG-DASH stream.

The wireless communication unit can perform a wireless Internet connection. For example, WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) .

In addition, the wireless communication unit can perform short-range wireless communication with other electronic devices. For example, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used.

Meanwhile, the external signal input unit 128 may be connected to the various set-top boxes through at least one of the various terminals described above to perform input / output operations with the set-top box.

For example, when the set-top box is a set-top box for an IP (Internet Protocol) TV, the video, audio and data signals processed in the IPTV set-top box can be transmitted to the controller 20, The control unit 20 may transmit the processed signals to the IPTV set-top box.

On the other hand, the video, audio and data signals processed in the IPTV set-top box can be processed by the controller 20 via the channel browsing processor 170.

The IPTV may include ADSL-TV, VDSL-TV, FTTH-TV and the like depending on the type of the transmission network. The IPTV may include a TV over DSL, a video over DSL, a TV over IP ), And the like. In addition, IPTV may also mean an Internet TV capable of accessing the Internet, or a full browsing TV.

The first demodulator 130 performs demodulation and channel decoding, and can output the stream signal TS 1. The stream signal TS 1 at this time may be a signal in which video, audio, and data signals are multiplexed. For example, the stream signal TS 1 may be an MPEG-2 standard video, a H.264 standard video, a HE-AVC standard video, an MPEG1 standard audio, an HE-AAC standard audio, a Dolby AC- 3 standard audio, a DTS standard audio, or the like may be multiplexed with MPEG-2 TS (Transprt Stream). Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

The stream signal TS1 is input to the control unit 20, and demultiplexing, signal processing, and the like are performed. In the embodiment of the present invention, before being input to the control unit 20, the channel browsing processing unit 170 inputs a channel browsing process. The channel browsing operation will be described later.

Meanwhile, the first demodulating unit 130 may be separately provided according to the ATSC scheme and the DVB scheme. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The second demodulator 135 receives the digital IF signal DIF 2 converted by the second tuner 125, performs a demodulation operation, and outputs a stream signal TS 2. The operation of the second demodulation unit 135 will be omitted with reference to the operation of the first demodulation unit 130 described above.

On the other hand, when the signal output from the second tuner 125 is the analog baseband video signal CVBS 2, the conversion from the analog / digital converter 140 to the digital signal is required.

The analog-to-digital converter 140 converts the input analog signal into a digital signal. If the input signal is video, sampling and quantization may be performed and converted to digital video (DV). The converted digital signal may be an uncoded signal. The converted digital video DV is input to the channel browsing processing unit 170 and processed.

The interface unit 150 transmits an input signal from the user to the control unit 20 or a signal from the control unit 20 to the user. For example, the interface unit 150 may be provided with various functions such as power on / off, channel selection, screen setting, and the like from the remote control device 200 according to various communication methods such as a radio frequency (RF) communication method and an infrared And can transmit a signal from the control unit 20 to the remote control device 200. [

According to an embodiment of the present invention, the interface unit 150 may include an operation recognition unit 10, and may recognize the operation of the user and output information on the operation to the control unit 20 .

The control unit 20 demultiplexes the input stream and processes the demultiplexed signals to generate and output a signal for video and audio output. The overall operation of the video display device 100 can be controlled.

Although not shown in the figure, the control unit 20 may include a demultiplexing unit, a video processing unit, a voice processing unit, a user input signal processing unit, and the like.

The control unit 20 demultiplexes an input stream signal, for example, an MPEG-2 TS, into video, audio, and data signals, respectively.

Also, the control unit 20 can perform image processing of the demultiplexed video. For example, if the demultiplexed video is encoded video, it can be decoded. Specifically, when the demultiplexed video is the MPEG-2 standard encoded video, it can be decoded by the MPEG-2 decoder. Also, if the demultiplexed video is a video encoded according to the DMB (Digital Multimedia Broadcasting) scheme or the H.264 standard according to DVB-H, it can be decoded by the H.264 decoder.

In addition, the controller 20 may process the brightness, tint, and color of the video.

The video processed by the control unit 20 is input to the display unit 30 and displayed. It is also possible to input to an external output terminal connected to the external output device.

Also, the control unit 20 can perform the audio processing of the demultiplexed audio. For example, if the demultiplexed audio is coded audio, it can be decoded. Specifically, when the demultiplexed audio is encoded audio of the MPEG-2 standard, it can be decoded by the MPEG-2 decoder.

Also, if the demultiplexed audio is coded audio according to the MPEG 4 BSAC (Bit Sliced Arithmetic Coding) standard according to the terrestrial DMB (Digital Multimedia Broadcasting) scheme, it can be decoded by the MPEG 4 decoder. Also, if the demultiplexed audio is coded audio of the AAC (Advanced Audio Codec) standard of MPEG 2 according to the satellite DMB scheme or DVB-H, it can be decoded by the AAC decoder.

In addition, the control unit 20 can process a base, a treble, a volume control, and the like.

The audio processed in the control unit 20 is input to the audio output unit 185, for example, a speaker and is output as audio. It is also possible to input to an external output terminal connected to the external output device.

Also, the control unit 20 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 electronic program guide (EPG) information including broadcast information such as start time and end time of a broadcast program broadcasted on each channel.

For example, the EPG information may be ATSC-PSIP (ATSC-Program and System Information Protocol) information in case of ATSC, and DVB-Service Information (DVB-SI) information in case of DVB. The ATSC-PSIP information or the DVB-SI information may be information included in the above-described stream, i.e., the header (4 bytes) of the MPEG-2 TS.

Also, the control unit 20 may perform an OSD (On Screen Display) process. Specifically, the control unit 20 displays various kinds of information on the screen of the display unit 30 based on at least one of the video-processed video and the data-processed data signal and the user input signal from the remote control device 200 It is possible to generate a signal for display in graphic or text. The generated signal may be input to the display unit 30 together with the video-processed video and data-processed data signals.

The signal generated for the graphic or text display may include various data such as a user interface screen of the image display apparatus 100, various menu screens, a widget, and an icon.

In addition, the controller 20 can perform a function of a personal video recorder (PVR) for recording a broadcast signal and storing the broadcast signal in the storage unit 175 and reproducing the broadcast signal. At this time, the controller 175 may perform scheduled recording for performing recording at a predetermined time. The control unit 20 can set the reserved recording based on the time input of the user. Also, the control unit 20 can set the reserved recording based on the EPG information extracted from the broadcast information such as DVB SI, PSIP, or information received from the data server.

In addition, the controller 20 may provide a time shifting function for simultaneously reproducing the currently recorded broadcast.

In addition, the control unit 20 may provide a trick mode function. The trick mode function includes fast forward (FF), which plays back faster than the normal speed, fast rewind (FR), which plays back faster than the normal speed in the reverse direction, play, stop, Forward slow motion that is slower than normal speed in the forward direction, and rewind slow motion that is slower than normal speed in the reverse direction. At this time, the forward double speed reproduction and the reverse double speed reproduction may be a method of reproducing all the frames faster than the reference speed. Or the forward double speed reproduction and the backward double speed reproduction may be a method of reproducing only some of all the frames.

In addition, the control unit 20 can provide a skip playback function to move to a specific point in time. The skip playback function may include forward skip playback (forward skip playback that moves to a specific point in the forward direction and forward skip playback that moves to a specific point in the reverse direction. In this specification, the forward skip playback is a forward jump (FJ) Skip playback can be used with the same meaning as backward jump (BJ).

In addition, the control unit 20 may provide a series recording function for setting up a series of recording including a series of episodes of the same television program at one time. For example, when a user sets a series of TV series (TV series) including episodes of Episodes 1 to 13 as a series recording, the control unit 20 sets all the episodes of Episodes 1 to 13 as scheduled recording. The control unit 20 may perform series recording based on information extracted from broadcast information such as DVB SI, PSIP, or information received from the data server. In a specific embodiment, the control unit 20 may perform series recording based on the title of the television program. Or the control unit 20 may perform the series recording based on at least one of the group identifier and the content identifier of each television program included in the broadcast information.

The channel browsing processing unit 170 may perform browsing processing on at least one of a broadcast signal corresponding to a channel to be received and various input video signals input through the external signal input unit 128.

Specifically, the demodulation unit 130 and the demodulation unit 135 receive the demodulated and channel-decoded stream signal TS 1 or TS 2, receive the stream signal from the external input signal input unit 128, 140, demultiplexes the stream signal TS 1 or TS 2, extracts a part of the demultiplexed video, and outputs the extracted video signal based on the video including the extracted video signal It is possible to multiplex and output a new stream signal TSa. For example, the stream signal TSa or TSb may be an MPEG 2 TS.

In addition, the channel browsing processing unit 170 can output the main stream signal TSb corresponding to the main video displayed in the main area of the video displayed on the display unit 30 without any processing, The sub-stream signal TSa corresponding to the sub-video displayed in the sub-area of the video displayed on the sub-area may be output as a channel browsing process as described above.

In the embodiment of the present invention, when a partial list of the broadcast signals of a plurality of channels is extracted and re-encoded into a stream format through the channel browsing processing unit 170 to display the channel list on the display unit 30, At least a part of the images can be displayed on the screen in the form of a thumbnail. As a result, the user can intuitively know the content broadcast on the other channel.

The channel browsing processing unit 170 extracts a part of images of various external input images inputted through the external signal input unit 128 and re-encodes them into a stream form so that when displaying an external input list on the display unit 30, At least a part of the external input image from the external input device can be displayed on the screen in a thumbnail form. Accordingly, the user can intuitively know the contents input from the external input device.

On the other hand, the channel browsing processor 170 extracts a broadcasting signal image of the channel and a partial image of the external input image described above, and re-encodes the partial image into a stream form, thereby displaying a channel list and an external input list on the display unit 30 , It is possible to display at least a part of the broadcast signal image of the plurality of channels and the external input image from the plurality of external input devices in a thumbnail form on the screen.

Accordingly, the user can intuitively know the contents input from the plurality of channels and the external input device.

The storage unit 175 may store a program for each signal processing and control in the control unit 20 and may store signal processed video, audio, and data signals.

The storage unit 175 may also function to temporarily store video, audio, or data signals input from the external signal input unit 128.

The storage unit 175 may store a corresponding broadcast channel through a channel memory function. For example, a flash memory type, a hard disk type, a multimedia card micro type type memory, a card type memory (e.g., SD or XD memory), a RAM, a ROM (EEPROM, etc.), and the like.

Although the storage unit 175 is shown separately from the control unit 20 in the drawing, the storage unit 175 is not limited thereto and may be included in the control unit 20. Also, the storage unit 175 may be a storage medium connected through an external input port.

Meanwhile, the image display apparatus 100 may reproduce files (moving picture files, still picture files, music files, document files, etc.) stored in the storage unit 175 and provide them to users.

The display unit 30 converts the video, data signal, OSD signal processed by the control unit 20 or the video and data signals received from the external signal input unit 128 into R, G, and B signals, respectively, do.

The display unit 30 can be implemented in various forms such as a PDP, an LCD, an OLED, a flexible display, and a 3D display unit. The display unit 30 may include a touch screen and may be used as an input device in addition to the output device.

The audio output unit 185 receives a signal processed by the control unit 20, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs the audio signal. The voice output unit 185 may be implemented by various types of speakers.

The video display device 100 described above is a fixed type and is a digital broadcast of ATSC system (8-VSB system), digital broadcast of DVB-T system (COFDM system), digital broadcast of ISDB-T system (BST- (DMB) type digital broadcasting, ATSC-M / H type digital broadcasting, DVB-H (COFDM) digital broadcasting , A Media Foward Link Only (FWD) type digital broadcasting, or the like. It may also be a digital broadcast receiver for cable, satellite communications, or IPTV.

2 is a diagram showing an embodiment of a method of controlling the operation of the image display apparatus using the remote control apparatus.

2 (a), it is exemplified that the pointer 205 corresponding to the remote control device 200 is displayed on the display unit 30. As shown in Fig.

The user can move or rotate the remote control device 200 up, down, left or right. The pointer 205 displayed on the display unit 30 of the video display device 100 corresponds to the motion of the remote control device 200. [ In this remote control device 200, as shown in the figure, since the pointer 205 is moved according to the movement in the 3D space, it can be called a space remote controller.

2B illustrates that when the user moves the remote control device 200 to the left, the pointer 205 displayed on the display unit 30 of the video display device 100 moves to the left corresponding to the pointer 205 .

Information on the motion of the remote control device 200 sensed through the sensor of the remote control device 200 is transmitted to the image display device 100. [ The image display apparatus 100 can calculate the coordinates of the pointer 205 from the information on the motion of the remote control device 200. [ The image display apparatus 100 can display the pointer 205 so as to correspond to the calculated coordinates.

2C illustrates a case where the user moves the remote control device 200 away from the display unit 30 while pressing a specific button in the remote control device 200. [ Thereby, the selected area in the display unit 30 corresponding to the pointer 205 can be zoomed in and displayed.

On the other hand, when the user moves the remote control apparatus 200 close to the display section 30, the selection area within the display section 30 corresponding to the pointer 205 may be zoomed out and displayed.

On the other hand, when the remote control apparatus 200 moves away from the display section 30, the selected area is zoomed out, and when the remote control apparatus 200 approaches the display section 30, the selected area may be zoomed in.

Further, the recognition of the upward, downward, and leftward / rightward movement can be excluded when a specific button in the remote control device 200 is pressed. That is, when the remote control apparatus 200 moves away from or approaches the display unit 30, it is not recognized that the up, down, left, and right movements are recognized, and only the forward and backward movements are recognized. Only the pointer 205 is moved in accordance with the upward, downward, leftward, and rightward movement of the remote control device 200 in a state where the specific button in the remote control device 200 is not pressed.

On the other hand, the moving speed and moving direction of the pointer 205 may correspond to the moving speed and moving direction of the remote control device 200.

The pointer 205 in this specification means an object displayed on the display unit 30 in correspondence with the operation of the remote control device 200. [ Therefore, various shapes of objects other than the arrow shapes shown in the drawings are possible with the pointer 205. [ For example, it can be a concept that includes points, cursors, prompts, thick outlines, and so on. The pointer 205 may be displayed corresponding to a point on a horizontal axis or a vertical axis on the display unit 30 or may be displayed corresponding to a plurality of points such as a line and a surface Do.

Referring to FIGS. 3 to 6, the image display apparatus 100 according to an embodiment of the present invention searches for a start point and an end point of a program. Also, an operation of the video display apparatus 100 to perform the reserved recording using the start point and the end point of the program will be described.

Characteristic information is information that can identify content, i.e., audio or video. Therefore, the characteristic information means a signal characteristic of audio or video. These signal characteristics include frequency characteristics, zero crossing rate, tempo, average spectrum, spectral flatness, and prominent tones across a set of bands, and bandwidth. Also, the characteristic information used in this specification may include a finger print, a signature, and a watermark. The watermark may include a perceptible watermark, such as a logo displayed on the playback screen, and a watermark (imperceptible watermark), which the user can not recognize while transforming the content. The fingerprint may also be to extract characteristic information from a portion of video included in the content, e.g., a portion of a frame or a portion of audio, e.g., a pattern of some audio samples. The fingerprint may also be referred to as a signature.

In this specification, the content may include all or a part of at least one program. The program start criterion is the basis for identifying the start point of the program. The program start criterion characteristic information is characteristic information corresponding to the program start criterion. The program end criterion is a criterion for identifying the program end point. The program end criterion characteristic information is characteristic information corresponding to the program end criterion.

The program start and end criteria for the video may be at least one of a logo of a particular broadcaster, a display age of a program, a logo of a specific program, or an image of a particular actor. At this time, the program start and end reference characteristic information may be information identifying at least one of a logo of a specific broadcaster, a logo of a specific program, an image of a specific actor, and an age indicator of a program viewable age. This will be described with reference to FIG. 3 and FIG.

FIG. 3 is a diagram for explaining an image display apparatus according to an embodiment of the present invention searching for a starting point of a program using characteristic information.

3 is a screen showing the viewable age of the program to be broadcasted. The broadcasting station always uses the same image 610 indicating the viewable age for the same viewing age. Therefore, when the characteristic information capable of identifying the image 610 indicating the viewable age is used, the control unit 20 can easily determine the starting point of the specific program.

FIG. 4 is a diagram for explaining an end point of a program using characteristic information according to an embodiment of the present invention.

Fig. 4 shows a program ending scene. When each program is terminated, the broadcasting station displays its own logo 630 to indicate to which broadcasting station the program is broadcast. Accordingly, when the characteristic information capable of identifying the logo 630 of the broadcasting station is used, the control unit 20 can easily determine the end point of the specific program.

The program start and end criteria for the audio may be at least one of a logo of a specific program, a background sound of a specific program (OST), an effect sound, a specific actor, an advertisement music, and a program name. At this time, the program start and end reference characteristic information may be information identifying at least one of a logo song of a specific program, a background music of a specific program (Original Sound Track, OST), a sound effect, a specific actor, an advertisement music, and a program name. In particular, the information identifying a particular actor may be a voice print of a particular actor.

Audio has a relatively small amount of data than video. Therefore, a comparatively short time is required for extraction, comparison and retrieval of audio. In addition, the amount of data processing required to extract, compare, and search audio characteristic information is less than the amount of data processing required to extract and compare the video characteristic information. Therefore, it is possible to extract, compare, and search the characteristic information of the audio even with the relatively low-performance control unit 20. Therefore, outputting the summary contents of the contents using the audio characteristic information may be more efficient than outputting the summary contents of the contents using the characteristic information of the video. Therefore, characteristic information about audio is easier to extract, compare, and search characteristic information than characteristic information about video.

The logos of certain programs rarely come out repeatedly at the starting and ending points of a particular program and are transformed and reproduced within the same program. Therefore, when the characteristic information capable of identifying the logo song of the specific program is used, the control section 20 can easily determine the start point and the end point of the specific program.

In addition, it is general to announce the name of a program to be broadcasted before a program is broadcasted by a broadcaster. Therefore, when the characteristic information for the program name is used, the control section 20 can discriminate the start point and the end point of the program as being usable.

Also, the advertisement music is repeatedly appeared every time the advertisement is reproduced without modification. Accordingly, when the characteristic information capable of identifying the advertisement music of a specific program is used, the control unit 20 can easily determine the portion where the advertisement is reproduced. Since the portion where the advertisement is reproduced can be easily discriminated, the control unit 20 can easily determine the point at which the advertisement ends and the program starts and the portion at which the program ends and the advertisement starts.

FIG. 5 is a block diagram illustrating a data flow between a content transmitting unit, an image display device, a characteristic information database, and a reserved recording list database according to an exemplary embodiment of the present invention.

The video display apparatus 100 according to an exemplary embodiment of the present invention may use a content transfer unit 300, a feature information database 350, and a reserved recording list database 400.

The content transmitting unit 300 transmits the content to the video display device 100. The content transmission unit 300 including audio may be a broadcasting station that provides terrestrial, cable, and satellite broadcasting. The content transmitting unit 300 including audio may be an IPTV server providing IPTV broadcasting or a streaming server providing VOD service. Also, the content transmitting unit 300 may be a storage medium storing a content recording including a multimedia file or audio. The content transmitting unit 300 including audio may exist outside the video display device 100. [ Or the content transmitting unit 300 may be included in the image display apparatus 100. [ At this time, the content transmission unit 300 may be the storage unit 175.

The characteristic information database 350 is a database for storing program start and end reference characteristic information. The control unit 20 receives the program start and end reference characteristic information from the characteristic information database 350. The program start and end reference characteristic information stored in the characteristic information database 350 may be received from an external database. The program start and end reference characteristic information stored in the characteristic information database 350 can also be stored based on user input. Specifically, the control unit 20 receives an input of a specific section of content such as a recording or the like from a user, extracts characteristic information for a specific section, and stores the extracted characteristic information in the characteristic information database 350. The characteristic information database 350 may exist outside the image display apparatus 100. Or the characteristic information database 350 may be included in the image display apparatus 100. [ At this time, the characteristic information database 350 may be the storage unit 175.

The reserved recording list database 400 is a database for storing a reserved recording list. The control unit 20 receives the reserved recording list from the reserved recording list database 400. [ The reserved recording list may include information of a program to be scheduled recording. The information of the program may include a program name, a program start time, and a program end time. The reserved recording list database 400 may exist outside the image display apparatus 100. [ Or the reserved recording list database 400 may be included in the image display apparatus 100. [ At this time, the reserved recording list database 400 may be the storage unit 175.

6 is a flowchart illustrating an operation of the video display apparatus according to an exemplary embodiment of the present invention to find a start point and an end point of a program and to perform scheduled recording.

The control unit 20 receives the reservation recording request signal (S101). In a specific embodiment, the control unit 20 may receive a reservation recording request signal from a user. The control unit 340 may receive the reservation recording request signal from the user and store the reservation recording request in the reservation recording list database 400. [ Also, the control unit 340 may perform the next operation as soon as the margin time from the scheduled start time of the program to be reserved. At this time, the scheduled start time of the program may be received from the EPG information. At this time, the margin time can be set by user input. By setting the margin time, it is possible to minimize the operation of the video display device 100 to extract the characteristic information from the content and compare it with the program start and end reference characteristic information. If there is no margin time, the video display device 100 must continuously extract characteristic information from the content after receiving the reservation request signal and compare it with the program start and end reference characteristic information.

The control unit 20 searches for the start point and the end point of the broadcast program based on the characteristic information corresponding to the program start and end criterion. It is also possible to start the scheduled recording based on the starting point and terminate the scheduled recording based on the end point. This can be done in the following steps.

The control unit 20 can obtain the program start and end criteria (S103). The program start and end criteria may include at least one of a criterion for audio and a criterion for video. The program start and end criteria for the video may be at least one of a logo of a particular broadcaster, a logo of a particular program, or an image of a particular actor. The program start and end criteria for audio may be at least one of a logo of a specific program, a background music of a specific program (OST), an effect sound, a specific actor, advertisement music, or a word.

In a specific embodiment, the control unit 20 may obtain either a program start or end criterion based on the user's input. At this time, user input may be received for each of the program start and end criteria. Specifically, when receiving an input for a logo song of a specific program from a user, the controller 20 can acquire a logo song of the specific program as a program start and end criterion. In yet another embodiment, the control unit 20 may obtain each of the program start and end criteria from the scheduled recording list database 400. In yet another embodiment, the control unit 20 may obtain each of the program start and end criteria based on the EPG information. Specifically, the EPG information may include at least any one of a genre of a content, a main actor, a name of a main character, and a background music. At this time, the control unit 20 can extract at least one of the genre of the content, the main actor, the name of the main character, and the background music from the EPG information. At this time, the EPG information may be DVB SI, PSIP, or information received from the data server. The control unit 20 can acquire the program start and end criteria respectively based on the information extracted from the EPG information. Specifically, the control unit 20 can extract the program name from the EPG information. Accordingly, the control unit 20 can obtain the program name as a program start and end reference. At this time, the control unit 20 can start and end reservation recording based on any one of the audio and video characteristic information corresponding to the program name. For example, when a program name is guided by voice. The control unit 20 extracts the audio characteristic information of the content and compares the extracted audio characteristic information with the characteristic information of the program name to start and end the scheduled recording.

The control unit 20 can acquire the program start and end reference characteristic information corresponding to the program start and end criteria (S105). The program start and end criterion characteristic information corresponding to the program start and end criterion is characteristic information that can identify the program start and end criterion. The control unit 20 can acquire the program start and end reference characteristic information corresponding to the program start and end criteria from the characteristic information database 350. [ Specifically, the following process can be performed.

The control unit 20 can request the characteristic information database 350 for program start and end reference characteristic information corresponding to the program start and end criteria. The characteristic information database 350 is a database for storing the summary reference characteristic information. In one embodiment, the characteristic information database 350 may be a server external to the image display apparatus 100. In another embodiment, the storage unit 175 may include a characteristic information database 350. [ The characteristic information stored in the characteristic information database 350 may be transmitted from an external database. In addition, the summary reference characteristic information included in the characteristic information database 350 may be stored by the user. Specifically, the control unit 20 receives an input for a specific section of the content from the user, extracts characteristic information about the specific section, and stores the extracted characteristic information in the characteristic information database 350.

The control unit 20 can receive program start and end reference characteristic information corresponding to the program start and end criteria from the characteristic information database 350. [

The control unit 20 acquires the content (S107). At this time, the image display apparatus 100 can acquire the content through at least one of the first tuner 120 and the second tuner 125. [ Specifically, the control unit 20 can acquire contents through satellite broadcasting, cable broadcasting, and terrestrial broadcasting. In another embodiment, the control unit 20 can acquire the content via the network. Specifically, the control unit 20 can acquire content from the VOD server through IPTV broadcasting. In another embodiment, the control unit 20 can acquire the content stored in the storage unit 175. [ Specifically, the control unit 20 can read the contents stored in the storage unit 175. [ At this time, the content includes at least one of audio and video.

The control unit 20 demultiplexes the content (S109). The control unit 20 can demultiplex the content to extract at least one of video and audio. However, if the contents are not multiplexed, the control unit 20 may omit the demultiplexing step.

The control unit 20 decodes the content (S111). Specifically, the control unit 20 may decode the content to generate at least one of the uncompressed video and the uncompressed audio. However, you can skip this step if the content is already decoded.

The control unit 20 extracts characteristic information about the decoded contents (S113). The control unit 20 extracts characteristic information from at least one of the uncompressed video and the uncompressed audio. Specifically, characteristic information can be extracted from a plurality of frame intervals of video or an audio interval of audio.

The control unit 20 determines whether the program start point is found (S115).

If the extracted characteristic information is the program start reference characteristic information corresponding to the program start reference, the control unit 20 starts the scheduled recording (S117, S119). This can be achieved by the following steps.

The control unit 20 can determine whether the extracted characteristic information is similar to the program start reference characteristic information. Specifically, the control unit 20 can determine whether the extracted characteristic information and the program start reference characteristic information are similar to each other by a predetermined reference ratio or more. Specifically, the control unit 20 determines whether or not at least one of the frequency characteristics of the scheduled recording start reference characteristic information and the extracted characteristic information, the zero crossing rate, the beat, the average spectrum, the frequency flatness, . Specifically, when the program start reference characteristic information reference is the program's logo song, the control unit 20 can determine whether the frequency characteristics of the program start reference characteristic information corresponding to the program's logo song are similar to the frequency characteristics of the extracted characteristic information.

If the extracted characteristic information and the program start reference characteristic information are similar to each other by more than a predetermined reference ratio, the control unit 20 can start scheduled recording.

If the extracted characteristic information is not the program start reference characteristic information corresponding to the program start criterion, the control unit 20 repeats the operation from the step of receiving the content before the program start point is found. This is because the characteristic information that can be determined that the program has started in the currently received contents is not extracted. The control unit 20 extracts the characteristic information of the received content and determines again whether or not the characteristic information that can be regarded as the start of the program is extracted.

After the program start point is found, if the extracted characteristic information is the program end criterion characteristic information corresponding to the program end criterion, the control section 20 ends the scheduled recording (S121, S123). This can be achieved by the following steps.

The control unit 20 can determine whether the extracted characteristic information is similar to the program end reference characteristic information. Specifically, the control unit 20 can determine whether the extracted characteristic information and program end reference characteristic information are similar to each other by a predetermined reference ratio or more. Specifically, the control unit 20 determines whether at least one of the program end criterion characteristic information and the frequency characteristics of the extracted characteristic information, the zero crossing rate, the beat mean, the average spectrum, the frequency balance degree, It can be judged. Specifically, when the program termination reference characteristic information reference is the broadcasting company logo, the control unit 20 can determine whether the frequency characteristics of the characteristic information corresponding to the logo of the broadcaster are similar to the frequency characteristics of the extracted characteristic information.

If the extracted characteristic information and the program end reference characteristic information are similar to each other by more than a predetermined reference ratio, the control unit 20 can end the scheduled recording.

After the program start point is found, if the extracted characteristic information is not the program end reference characteristic information corresponding to the program end criterion, the control section 20 repeats the operation from the step of receiving the content. This is because the characteristic information that can be regarded as the end of the program in the currently received contents is not extracted. The control unit 20 extracts the characteristic information of the received content and determines again whether or not the characteristic information that can be regarded as the end of the program is extracted.

In the video display device 100 according to an embodiment of the present invention, the operation of searching for the program start point and the end point may be performed by the steps described above. Specifically, the video display device 100 extracts the characteristic information from the content from the step of obtaining the program start and end criteria (S103) and compares the characteristic information with the characteristic information corresponding to the program start and end criteria (S117, S121) You can find program start and end points in the recordings. At this time, the controller 20 may display the program start point and the end point on the progress bar indicating the current length of the content and the current playback point. Also, in a specific embodiment, the playback point can be moved to a program start point or an end point based on user input. Specifically, the control unit 20 can move the reproduction point to the start point of the program when receiving a specific user input. In addition, when the control unit 20 receives another specific user input, the control unit 20 can move the reproduction point to the end point of the program. For example, when receiving the input of the forward speed playback (FF) button of the remote controller of the control unit 20, the playback designation can be moved to the start point of the program. The control unit 20 can move the reproduction point to the program end point when receiving the input of the reverse direction reproduction reproduction (FR) button of the remote controller.

Referring to FIGS. 7 through 9, the video display apparatus searches for and reproduces a reproduction end point at which a user has finished reproduction of contents according to another embodiment of the present invention. In particular, a case where the user reproduces the same content through the image display apparatus 100 according to another embodiment of the present invention while reproducing the content from another apparatus will be described. It is also described that the content of the content is the same and the video display apparatus 100 searches for and reproduces the playback end point when the format of the content is changed. When the content of the content is the same and the format of the content is changed, one content may be divided into a plurality of files, or a plurality of versions of content having different quality or codec may exist.

7 is a block diagram illustrating data flow between a content transmitter, an image display device, an external device, and a playback record database according to another embodiment of the present invention.

The video display apparatus 100 according to an embodiment of the present invention may use a content transfer unit 300 and a playback record database 500. [

The content transmitting unit 300 transmits the content to the video display device 100. The content transmission unit 300 including audio may be a broadcasting station that provides terrestrial, cable, and satellite broadcasting. The content transmitting unit 300 including audio may be an IPTV server providing IPTV broadcasting or a streaming server providing VOD service. Also, the content transmitting unit 300 may be a storage medium storing a content recording including a multimedia file or audio. The content transmitting unit 300 including audio may exist outside the video display device 100. [ Or the content transmitting unit 300 may be included in the image display apparatus 100. [ At this time, the content transmission unit 300 may be the storage unit 175.

The playback record database 500 stores playback restart characteristic information, which is characteristic information capable of determining a playback end point for each user's content. The image display apparatus 100 can start the reproduction of the content from the point identified through the reproduction resumption characteristic information. The control unit 20 receives characteristic information from the playback record database 500 that can determine the playback end point of the content. At this time, the stored characteristic information may be stored not only in the case where each user reproduces the content on the video display device 100, but also on the reproduction end point in the case where it is reproduced on the external device 600 instead of the video display device 100. Specifically, when the external device 600 receives the content reproduction end input from the user, the external device 600 can extract characteristic information of at least one of video and audio of the reproduction point. Thereafter, the external device 600 can store the extracted characteristic information in the reproduction record database 500. The reproduction record database 500 may exist outside the image display apparatus 100. [ Or the reproduction history database 500 may be included in the image display apparatus 100. [ At this time, the playback record database 500 may be the storage unit 175.

FIG. 8 is a flowchart illustrating an operation of the video display apparatus according to another embodiment of the present invention to find and reproduce a playback end point at which a user ends playback of content.

The control unit 20 receives the reproduction command (S301).

The control unit 20 receives the playback resumption characteristic information (S303). The control unit 20 can receive the playback resume characteristic information from the playback record database 500. [ At this time, the control unit 20 can receive the playback resume characteristic information based on the user and the content. This is because playback end points for the same content may be different for each user.

The control unit 20 acquires the content (S305). At this time, the image display apparatus 100 can acquire the content through at least one of the first tuner 120 and the second tuner 125. [ Specifically, the control unit 20 can acquire contents through satellite broadcasting, cable broadcasting, and terrestrial broadcasting. In another embodiment, the control unit 20 can acquire the content via the network. Specifically, the control unit 20 can acquire content from the VOD server through IPTV broadcasting. In another embodiment, the control unit 20 can acquire the content stored in the storage unit 175. [ Specifically, the control unit 20 can read the contents stored in the storage unit 175. [ At this time, the content includes at least one of audio and video.

The control unit 20 demultiplexes the content (S307). The control unit 20 can demultiplex the content to extract at least one of video and audio. However, if the contents are not multiplexed, the control unit 20 may omit the demultiplexing step.

The control unit 20 decodes the content (S309). Specifically, the control unit 20 may decode the content to generate at least one of the uncompressed video and the uncompressed audio. However, you can skip this step if the content is already decoded.

The control unit 20 extracts characteristic information about the decoded contents from the comparison period of the contents (S311). The comparison period of the content is a specific period of the content to be compared with the playback resumption characteristic information. The comparison period of the contents may include at least one of audio and video of a certain length. The control unit 20 extracts characteristic information from at least one of the uncompressed video and the uncompressed audio. Specifically, characteristic information can be extracted from a plurality of frame intervals of video or an audio interval of audio.

If it is the characteristic information corresponding to the extracted characteristic information and the reproduction resumption characteristic information, the control section 20 starts reproduction (S315, S317). This can be achieved by the following steps.

The control unit 20 can determine whether the extracted characteristic information is similar to the reproduction resume characteristic information. Specifically, the control unit 20 can determine whether the extracted characteristic information and the reproduction resume characteristic information are similar to each other by a predetermined reference ratio or more. Specifically, the control unit 20 determines whether at least one of the frequency characteristics of the playback resuming characteristic information and the extracted characteristic information, the zero crossing rate, the beat rate, the average spectrum, the frequency level, can do.

If the extracted characteristic information and the reproduction resumption characteristic information are similar to each other by a predetermined reference ratio or more, the control unit 20 can start reproduction of the content.

If the characteristic information corresponds to the extracted characteristic information and the reproduction resumption characteristic information, the control unit 20 moves the comparison period of the content and performs the operation from the step of extracting the characteristic information from the comparison period of the content.

In this way, it is possible to extract the characteristic information and find the playback resumption point even if the format of the content is changed. Therefore, the video display device 100 according to another embodiment of the present invention can find the playback resume point even if the format of the content is different. When the format of the content is different, the codec may be different, the compression ratio of the file may change, or the file may be divided into a plurality of files.

FIG. 9 shows that the video display apparatus according to another embodiment of the present invention displays a playback end point where the user ends the playback of the content on the progress bar.

The progress bar displays the total length of the content and the current playback point. The progress bar can also be used for time shifts, such as playing back content or playing back content. The image display apparatus 100 according to another embodiment of the present invention may display a point where characteristic information corresponding to the playback resumption characteristic information is found on the progress bar. In particular, at least one of an identifier for identifying a user who reproduces the content, an identifier for identifying an external device used for reproducing the content, and a date for reproducing the content may be displayed together. In the embodiment of FIG. 9, the control unit 20 displays a point 710 at which the user whose identifier is A reproduces the content on 2013.12.05 through an external device whose identifier is a cell phone and ends the content. In addition, the control unit 20 displays the point 730 at which the user whose identifier is B reproduces the content on the date of 2013.12.09 via the external device whose identifier is the tablet and finished. This allows the user to clearly understand the point at which the user played back the content using the external device and ended. Also, even when a plurality of users use the image display apparatus 100, each user can reproduce the content through the identifier for the user and clearly grasp the end point.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

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 that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (16)

A video display device for reproducing contents,
A control unit for obtaining a program start criterion and a program end criterion and searching for a program start point and a program end point based on at least one characteristic information corresponding to each of the program start criterion and the program end criterion; And
And a display unit for displaying the contents,
Wherein the at least one characteristic information includes at least one of video characteristic information and audio characteristic information
Video display device. The method according to claim 1,
The program start criterion and the program termination criterion are logos of a specific program, a program name. A logo of a broadcasting company, an age indication of a program viewing age, and a logo of a program
Video display device. The method according to claim 1,
The control unit extracts the program start reference and the program end reference from an electronic program guide (EPG)
Video display device. The method according to claim 1,
The control unit receives the program start reference and the program end reference as user inputs
Video display device. The method according to claim 1,
The control unit starts the scheduled recording based on the program start point and terminates the scheduled recording based on the program end point
Video display device. The method according to claim 1,
Wherein the content is a recording,
The control unit displays the program start point and the program end point on a progress bar indicating the total length of the content and the current playback point
Video display device The method according to claim 6,
When receiving the first user input of the user, the control unit moves the current playback point to the program start point,
When receiving the user's second user input, the control unit moves the current playback point to the program end point
Video display device. The method according to claim 1,
Wherein the control unit receives the at least one characteristic information from a characteristic information database located outside the video display device
Video display device. A method of operating a video display device for reproducing content,
Obtaining a program start criterion and a program termination criterion;
Searching for a starting point of the program based on at least one characteristic information corresponding to the program starting criterion; And
And finding an end point of the program based on at least one characteristic information corresponding to the program end criterion,
Wherein the at least one characteristic information includes at least one of video characteristic information and audio characteristic information
How it works. 10. The method of claim 9,
The program start criterion and the program termination criterion are logos of a specific program, a program name. A logo of a broadcasting company, an age indication of a program viewing age, and a logo of a program
How it works. 10. The method of claim 9,
The step of obtaining the program start criterion and the program termination criterion
And extracting the program start criterion and the program end criterion from an electronic program guide (EPG)
How it works. 10. The method of claim 9,
The step of obtaining the program start criterion and the program termination criterion
Receiving the program start criterion and the program termination criterion as user input
How it works. 10. The method of claim 9,
Starting scheduled recording based on the program start point; And
Ending the scheduled recording based on the program end point
How it works. 10. The method of claim 9,
Wherein the content is a recording,
And displaying the program start point and the program end point on a progress bar indicating an overall length of the content and a current playback point
How it works 15. The method of claim 14,
Moving the current playback point to the program start point when receiving a first user input of the user; And
Further comprising moving the current playback point to the program end point when receiving a second user input of the user
How it works. 10. The method of claim 9,
Receiving the at least one characteristic information from a characteristic information database located outside the video display device
How it works.

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