JP2007300280A - Video reproducing apparatus and video reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video reproducing apparatus and a video reproducing method whereby a viewer can easily determine a segment with a high level of interest by displaying analysis information of a video image and the viewer can control reproduction of the segment on the basis of the analysis information. <P>SOLUTION: The analysis information 300 includes: feature quantity information 300 capable of displaying information obtained from the video image as temporally consecutive numerals; a feature quantity selection cursor 300A for referencing feature quantity information of a time and capable of selecting the video image by using the time for a reproduction designation position; event information 301 for including a plurality of events 301a each including a particular aspect; an event selection cursor 301A capable of selecting the event 301a from the event information 301; a time information 302 for displaying a reproduction elapsed time corresponding to the feature quantity information 300 and the event information 301; and a reproduction position 303 for denoting a present reproduction position corresponding to the time information 302, and is displayed on a display screen 31. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video playback device and a video playback method, and more particularly to a video playback device that displays the importance of a video to be played with a plurality of parameters along time information and allows a viewer to select a video playback position and playback method. And a video reproduction method.

  As a conventional technique, there has been known a video playback apparatus capable of automatically selecting an important part of a TV program and playing back the digest version (for example, Patent Document 1).

According to this video reproduction apparatus, a program corner determining unit that divides a program into corners such as a main part or CM (Commercial Message), a corner importance determining unit that automatically determines the importance of each corner, It has playback control means for rearranging and playing based on certain conditions, and information display means for displaying the importance of corners and the order of corner playback. A specific event is determined in advance and corresponds to this specific event. When an event occurred, this event was judged as a highly important event and displayed on the display screen.
JP 2005-328329 A

  However, according to the conventional video playback device, since an event corresponding to a predetermined specific event is displayed on the display screen, it may not coincide with an event of high interest level of the viewer. In some cases, high events could not be extracted. In addition, it was not possible for the viewers to extract events of high interest according to their choices.

  Accordingly, an object of the present invention is to display a video analysis information so that a section in which the viewer is highly interested can be easily determined, and the viewer can control the playback of the section based on the analysis information. It is to provide a reproduction method.

(1) In order to achieve the above object, the present invention provides a recording / playback control unit for recording and reproducing a video, a display unit for displaying the video, and an event corresponding to a predetermined specific event as event information from the video. A metadata analysis unit that extracts and detects feature amount information that continuously changes with time, and a metadata display unit that displays the event information and the feature amount information on the display unit along a time axis A video reproduction apparatus characterized by comprising:

  According to such a configuration, the event information and the feature amount information are visually displayed, so that it is possible to easily determine a section having a high degree of interest for the viewer.

(2) Further, in order to achieve the above object, the present invention provides, as event information, a recording / playback control unit that records and plays back video, a display unit that displays the video, and an event corresponding to a predetermined specific event as event information. A metadata analysis unit that extracts feature amount information that is extracted from video and that continuously changes with time, and metadata that displays the event information and the feature amount information on the display unit along a time axis And a display unit, wherein the recording / playback control unit plays back the video from the playback elapsed time of the event by selecting an event of the event information.

  According to such a configuration, since event information and feature amount information are visually displayed, it is possible to reproduce a video from a reproduction elapsed time with a high degree of interest of the viewer by selecting an event with reference to these information. it can.

(3) Further, in order to achieve the above object, the present invention provides a recording / playback control unit that records and plays back a video, a display unit that displays the video, and an event corresponding to a predetermined specific event as event information. A metadata analysis unit that extracts feature amount information that is extracted from video and that continuously changes with time, and metadata that displays the event information and the feature amount information on the display unit along a time axis And a display unit, wherein the video recording / playback control unit skips or fast-forwards between the events of the event information when the video is played back.

  According to such a configuration, it is possible to reproduce the video of only the event portion that is considered to have high viewer interest while referring to the event information and the feature amount information visually.

(4) Further, in order to achieve the above-mentioned object, the present invention provides the recording / playback control unit for recording and reproducing the video, the display unit for displaying the video, and the event corresponding to the predetermined specific event as the event information. A metadata analysis unit that extracts feature amount information that is extracted from video and that continuously changes with time, and metadata that displays the event information and the feature amount information on the display unit along a time axis A display unit, wherein the recording / playback control unit plays back the video using the elapsed playback time as the playback start time by designating the playback elapsed time of the feature amount information. I will provide a.

  According to such a configuration, the event information and the feature amount information are visibly displayed. By selecting the feature amount information with reference to these information, the video is reproduced from the elapsed playback time with a high degree of interest of the viewer. be able to.

(5) In addition, in order to achieve the above object, the present invention extracts an event corresponding to a predetermined specific event from the video as event information, and detects a feature amount information that continuously changes with time. By selecting a data analysis step, a metadata display step for displaying the event information and the feature amount information on a display unit along a time axis, and an event of the event information, the video can be determined from the start time of the event. And a playback step for playing back the video.

  According to such a method, a video reproducing method having the effect (2) can be achieved.

(6) In order to achieve the above object, the present invention extracts an event corresponding to a predetermined specific event from the video as event information, and detects feature amount information that continuously changes with time. A data analysis step, a metadata display step for displaying the event information and the feature amount information on a display unit along a time axis, and a reproduction step for reproducing by skipping or fast-forwarding between the events of the event information. A video reproduction method characterized by comprising:

  According to such a method, a video reproducing method having the effect (3) can be achieved.

(7) Further, in order to achieve the above object, the present invention extracts an event corresponding to a predetermined specific event from the video as event information and detects a feature amount information that continuously changes with time. By specifying a data analysis step, a metadata display step for displaying the event information and the feature amount information on a display unit along a time axis, and a playback elapsed time of the feature amount information, And a playback step for playing back the video as a playback start time.

  According to such a method, a video reproduction method having the effect (4) can be achieved.

  According to the present invention, a viewer can easily determine the importance of a section.

  Embodiments of a video playback apparatus according to the present invention will be described below in detail with reference to the drawings.

Embodiment
(Configuration of video playback device)
FIG. 1 is a schematic diagram of a video reproduction apparatus according to an embodiment of the present invention.

  The video playback apparatus 1 includes a main body function unit 2 composed of electronic components such as a CPU (Central Processing Unit) and an HDD (Hard Disc Drive), and a display screen for displaying images and characters output from the main body function unit 2 And an image display unit 3 having a remote control unit 31 and a remote controller 4 that operates on the interface (I / F) unit of the main body function unit 2 and can remotely control the video reproduction apparatus 1.

  FIG. 2 is a block diagram showing a schematic configuration of the video reproduction apparatus according to the embodiment of the present invention.

  The main body function unit 2 includes a system LSI (Large Scale Integration) 10 that processes digital video, and a signal receiving unit 20 that receives and demodulates the digital video signal. As a receiving function other than digital video, an A / D unit 48 for receiving an output signal from an analog tuner, a ghost reduction 47 for reducing a ghost generated on the screen, and a video signal into a luminance signal and a color signal It has a three-dimensional YC separation 46 to be separated, and an A / D section 49 that performs analog / digital conversion for connecting an external video device.

  The system LSI 10 receives a digital signal or a digitized analog signal from the signal receiving unit 20 and separates it into video, audio, and program information, and is used for digital broadcasting, DVD, and the like. MPEG-2 decoder 12 for decoding the standard MPEG-2, graphic engine 13 for rendering the decoded image signal, and digital format for optimizing the output signal in the image display unit 3 Converter 14.

  The CPU 15 is connected to each unit on the system LSI 10 and controls each unit. In addition, the CPU 15 stores a hard disk 40 for storing images and programs for internal processing, an SRAM 41 for temporarily storing data being processed by the CPU 15, and a flash for copying and storing data such as an external storage device (not shown). A memory 42, a LAN processing LSI 43 for communicating with the outside via Ethernet (registered trademark), a controller LSI 44 for connecting to an external storage device (not shown), an operation command reception of the remote controller 4, and a connection to an external device , And an I / F unit 45 used for an operation switch (not shown) provided in the main body function unit is expanded and connected.

  The signal receiving unit 20 is connected to an external antenna (not shown) to receive digital terrestrial broadcasts, a demodulator 23 to demodulate the output from the digital tuner 21, and an external antenna (not shown) to connect the BS and BS. It has a digital tuner 22 that receives CS broadcasts and a demodulator 24 that demodulates the output from the digital tuner 22.

  The image display unit 3 includes a display screen 31 and a back-end processor 30 that receives the output from the main body function unit 2 to optimize the display screen 31 and adjust the final image quality.

(Configuration of main unit software)
FIG. 3 is a schematic diagram showing the configuration of the main software in the embodiment of the present invention.

  The main body software 500A for controlling the video reproduction apparatus 1 is stored in the hard disk 40 shown in FIG. 2, and has a configuration as shown in FIG. The operation of the main body software 500A is controlled by the CPU 15 shown in FIG.

  The main body software 500A includes a TSP (Transport Stream Processor) unit 50 that performs TS (Transport Stream Processor) separation processing such as filtering of broadcast station packets, an EPG management unit 51 that manages EPG (Electronic Program Guide) data, and an external EPG data 52 for storing the acquired EPG data, a recording / playback control unit 53 for controlling the recording of the content and the playback of the recorded content, a recorded content 54 for storing the recorded content, a program title included in the content data, Metadata such as program information and metadata in the content data are generated by analyzing the video in the content data, and a video for performing processing for displaying the video of the content. The image display unit 56 and a metadata display unit 57 that performs processing for displaying metadata are included.

(Configuration of remote control)
FIG. 4 is a plan view showing the configuration of the remote control according to the embodiment of the present invention.

  The remote controller 4 includes a TV function operation switch group 400 for performing TV power supply and channel operation, a router video changeover switch 401 for switching between video display and router display, a display function operation switch 402 capable of switching the screen display mode, Detailed information for displaying the detailed information of the event or feature amount information, the feature amount changeover switch 403A that can switch the type of the displayed feature amount information, the event changeover switch 403B that can switch the type of the displayed event A display switch 403C, a time scale changeover switch group 404 that expands and contracts the time scale of the time information being displayed, a recording / playback operation switch group 405 that controls video recording and playback, and a recording / playback operation switch group 405. Displays the current event information and feature information. Tsu having an event skip switch 405A selectable flop to, a numeric input switch group 406 for numeric input.

(Configuration of display screen)
FIG. 5 is a schematic diagram showing a configuration of a display screen according to the embodiment of the present invention.

  The analysis information 3000 includes feature amount information 300 that can display information obtained from a video as a temporally continuous numerical value, and features that can select a video with reference to the feature amount information at a certain time and using that time as a reproduction designated position. Playback corresponding to the amount selection cursor 300A, the event information 301 including a plurality of events 301a including a specific event, the event selection cursor 301A capable of selecting the event 301a from the event information 301, the feature amount information 300, and the event information 301 It has time information 302 for displaying the elapsed time and a reproduction position 303 indicating the current reproduction position corresponding to the time information 302, and is displayed on the display screen 31.

  The feature amount information 300 is obtained and extracted by extracting and analyzing the cheerfulness from the video. In addition to the cheerfulness, it may be extracted from the brightness, hue, sound level, applause, excitement index, etc. of the video, so that they can be switched and displayed to select the program viewing section. To do.

  Event information 301 includes a cut indicating that the scene has changed significantly, such as camera switching or panning, a similar scene, a chapter boundary, a news topic in a news program, a program corner such as an information program, a music performance scene, a telop display, Subtitle data that matches specific conditions, exciting scenes in sports broadcasts, baseball broadcast batting, sumo program initiatives, etc. are detected and displayed. For the event 301a in the event information 301, a configuration for displaying one of these types or a configuration for displaying a plurality of types can be selected. When displaying a plurality of types, a determination method such as color-coding the event 301a for each type is used.

  FIG. 6A is a schematic diagram showing a configuration of detailed event information related to the embodiment of the present invention. FIG. 6B is a schematic diagram showing the configuration of the feature amount detailed information related to the embodiment of the present invention.

  The detailed event information 301B is displayed by selecting an event with the event selection cursor 301A and requesting detailed information. The detailed event information 301B includes an event name, start time, and time length information.

  The feature amount detailed information 300B is displayed by designating a time with the feature amount selection cursor 300A and operating the detailed information display switch 403C of the remote controller 4 to request the detailed information. Further, detailed information indicating the feature quantity statistics throughout the content data is also displayed.

(Operation)
Hereinafter, the operation of the video reproduction apparatus according to the embodiment of the present invention will be described with reference to FIGS.

  The recording / playback control unit 53 acquires a stream of a desired program from the TSP unit 50 based on the EPG data 52 acquired from the EPG management unit 51 and stores it in the recorded content 54 as content data. The stored content data and the video of the already recorded content data are first reproduced on the video display unit 56.

  When the viewer operates either the feature amount changeover switch 403A or the event information changeover switch 403B, the video of the content data is analyzed by the metadata analysis unit 55, and the analysis information 3000 is displayed on the display screen 31. .

  By operating the feature amount changeover switch 403A, feature amounts different from the feature amount information 300 being displayed are displayed in order. By operating the event changeover switch 403B, event information different from the currently displayed event information 301 is displayed in order. By operating the time scale changeover switch group 404, the display range of the time information 302 being displayed is changed.

  The feature amount selection cursor 300A and the event selection cursor 301A can be operated with the event skip switch 405A. When the detailed information display switch 403C is operated with the feature amount information 300 and the event information 301 selected, the event shown in FIG. Detailed information 301B and feature amount detailed information 300B are displayed.

  The playback position 303 moves following the state of playback control performed by the recording / playback operation switch group 405. It is also possible to reproduce the playback position 303 by following the section selected by the feature selection cursor 300A and the event selection cursor 301A.

  By setting the playback method, it is possible to set so that only the event 301a is played and other sections are skipped, or the sections other than the event 301a are fast-forwarded and played. It is also possible to reproduce only a section having a certain feature amount or more.

(Effect of embodiment)
According to the above-described embodiment, the metadata of both the feature amount information 300 and the event information 301 obtained from the video is displayed on the display screen 31 and visualized, whereby the searchability of the section that the viewer determines to be important is improved. improves.

  Further, since the event 301a or the reproduction position 303 can be selected from the analysis information 3000, the reproduction position in accordance with the viewer's intention can be easily determined. In addition, since a playback method for the event 301a can be selected based on the event information 301, a playback method in accordance with the viewer's intention is achieved.

  Note that the event 301a may be input by the viewer.

  In addition, the feature amount selection cursor 300A may be snapped to the peak time of the displayed feature amount information 300 so that a rising position can be selected.

It is the schematic of the video reproduction apparatus regarding embodiment of this invention. It is a block diagram which shows schematic structure of the video reproduction apparatus regarding embodiment of this invention. It is the schematic which shows the structure of the main body software in embodiment of this invention. It is a top view which shows the structure of the remote control regarding embodiment of this invention. It is the schematic which shows the structure of the display screen regarding embodiment of this invention. (A) is the schematic which shows the structure of the event detailed information regarding embodiment of this invention. (B) is the schematic which shows the structure of the feature-value detailed information regarding embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Video reproduction apparatus, 2 ... Main body function part, 3 ... Image display part, 4 ... Remote control, 10 ... System LSI, 11 ... DEMUX, 12 ... MPEG-2 decoder, 13 ... Graphic engine, 14 ... Digital format converter, 15 ... CPU, 20 ... Signal receiver, 21 ... Digital tuner, 22 ... Digital tuner, 23 ... Demodulator, 24 ... Demodulator, 30 ... Back-end processor, 31 ... Display screen, 40 ... Hard disk, 41 ... SRAM, 42 ... Flash memory, 43 ... LAN processing LSI, 44 ... Controller LSI, 45 ... I / F unit, 46 ... 3D YC separation, 47 ... Ghost reduction, 48 ... A / D unit, 49 ... A / D unit, 50 ... TSP , 51... EPG management unit, 52... EPG data, 53... Recording / playback control unit, 54. Metadata analysis unit 56 ... Video display unit 57 ... Metadata display unit 300 ... Feature amount information 300A ... Feature amount selection cursor 300B ... Feature amount detailed information 301 ... Event information 301A ... Event selection cursor 301B ... detailed event information, 302 ... time information, 303 ... playback position, 400 ... television function operation switch group, 401 ... router video changeover switch, 402 ... display function operation switch, 403A ... feature quantity changeover switch, 403B ... event changeover switch, 403C ... Detailed information display switch, 404 ... Time scale changeover switch group, 405 ... Recording / playback operation switch group, 405A ... Event skip switch, 406 ... Numerical value input switch group, 500A ... Main unit software, 3000 ... Analysis information

Claims (9)

A recording / playback control unit for recording and playing back video;
A display unit for displaying the video;
An event corresponding to a predetermined specific event is extracted from the video as event information, and a metadata analysis unit that detects feature amount information that continuously changes with time, and
A video reproduction apparatus comprising: a metadata display unit that displays the event information and the feature amount information on the display unit along a time axis. A recording / playback control unit for recording and playing back video;
A display unit for displaying the video;
An event corresponding to a predetermined specific event is extracted from the video as event information, and a metadata analysis unit that detects feature amount information that continuously changes with time, and
A metadata display unit that displays the event information and the feature amount information on the display unit along a time axis;
The video playback apparatus, wherein the recording / playback control unit plays back the video from the playback elapsed time of the event by selecting an event of the event information. A recording / playback control unit for recording and playing back video;
A display unit for displaying the video;
An event corresponding to a predetermined specific event is extracted from the video as event information, and a metadata analysis unit that detects feature amount information that continuously changes with time, and
A metadata display unit that displays the event information and the feature amount information on the display unit along a time axis;
The video recording / playback control unit, when playing back the video, skips or fast-forwards between events of the event information and plays back the video. A recording / playback control unit for recording and playing back video;
A display unit for displaying the video;
An event corresponding to a predetermined specific event is extracted from the video as event information, and a metadata analysis unit that detects feature amount information that continuously changes with time, and
A metadata display unit that displays the event information and the feature amount information on the display unit along a time axis;
The video recording / playback control unit plays back the video with the playback elapsed time as a playback start time by specifying the playback elapsed time of the feature amount information.   5. The video reproduction device according to claim 1, wherein the metadata display unit displays the event information and the feature amount information in association with a time axis indicating a video reproduction elapsed time. 6. .   The video reproduction apparatus according to claim 1, wherein the metadata display unit can display detailed information of the event information and the feature amount information. A metadata analysis step for extracting an event corresponding to a predetermined specific event from the video as event information and detecting feature amount information that continuously changes with time,
A metadata display step of displaying the event information and the feature amount information on a display unit along a time axis;
A video playback method comprising: a playback step of playing back the video from a start time of the event by selecting an event of the event information. A metadata analysis step for extracting an event corresponding to a predetermined specific event from the video as event information and detecting feature amount information that continuously changes with time,
A metadata display step of displaying the event information and the feature amount information on a display unit along a time axis;
And a playback step of skipping or fast-forwarding between the events of the event information. A metadata analysis step for extracting an event corresponding to a predetermined specific event from the video as event information and detecting feature amount information that continuously changes with time,
A metadata display step of displaying the event information and the feature amount information on a display unit along a time axis;
A video playback method comprising: a playback step of playing back the video using the playback elapsed time as a playback start time by specifying the playback elapsed time of the feature amount information.