JP2007074104A - Video camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video camera that dispenses with editing work, and allows one to enjoy a desired image after completing photography. <P>SOLUTION: A keyword is set to an image being photographed by the video camera in a simple procedure, and creates a play list file for relating the set keyword to the image. The play list file corresponding to the keyword is created nearly concurrently with a point in time when the photography is completed, the keyword set by a photographer during photography is selected, and the image is reproduced based on the keyword, thus allowing one to watch the image related to the keyword immediately after the photography. The keyword can be changed during photography, thus setting a plurality of keywords to one image. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a video camera that records captured images on an optical disk, a magnetic disk, a semiconductor memory, or the like.

  In a recording / playback apparatus such as a DVD that handles media on which a plurality of moving images and audio data are recorded, the user can view the moving image / audio data files recorded on the media in a desired order. A data file playback order set is called a playlist. In some recording / playback apparatuses, the playback range of a data file can be set by specifying a playback start point and a playback end point in a playlist.

  Some moving image data recording / reproducing apparatuses use a large-capacity rewritable optical disc as a recording medium and edit a moving image using a playlist. In the case of such a device, instead of actually trimming or joining moving image data files to edit one scene, the playback start point and the reproduction end point are determined for each moving image file by a playlist. The video editing is realized by designating and setting the playback order and playing the data file according to the playlist.

  As an editing method using a playlist, for example, there is a method disclosed in Japanese Patent Laid-Open No. 2000-353375 (Patent Document 1). In the publication, the number of the playlist to be created is input using a user interface such as a button, and the playlist is started by pressing the button at the start position while playing and displaying the video data recorded on the disc or the like. Register as a point.

Next, in order to specify the end position, fast-forward, fast-rewind, stop, play button, etc. are operated to search the corresponding video data position, and a play list is created by registering it as the end position. When creating a playlist composed of a plurality of scenes, the above procedure is repeated.
JP 2000-353375 A

  As described above, in the conventional method, a playlist is created while searching for and selecting a desired video scene while playing back a captured video. Therefore, editing work for selecting and extracting a desired scene from the video has been essential. Furthermore, since editing work is indispensable, it is impossible to appreciate a video in which only a desired scene is extracted immediately after the end of shooting.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a video camera that does not require editing work and that allows a user to view a desired video after shooting.

  In order to achieve the above object, the present invention creates a file including shooting means, means for setting a keyword for a shot video during a shooting period according to an operation by the operation means, and information for associating the set keyword with video data. Means and means for recording the file on a recording medium.

  In the present invention, a keyword is set for a photographic image during the photographing period, and a file including information for associating the keyword with video data is created. If information related to a keyword is reproduced based on this file information, only video related to the keyword can be viewed without requiring editing work.

  According to the present invention, by setting a keyword for a video during the shooting period and creating a file that associates the keyword with the video, only the video related to the keyword can be viewed. Also, it is possible to view videos related to keywords without requiring editing work.

  Furthermore, since a file is created after shooting is completed, a desired video can be viewed after shooting. Further, since a photographed video is searched according to the search condition and a file is created based on the search result, a desired image can be easily obtained without requiring complicated editing work.

  Next, the best mode for carrying out the invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a first embodiment of a video camera according to the present invention. In the figure, reference numeral 101 denotes an optical disk, and for example, a recording medium such as a DVD can be used. A photographed image that has passed through the optical lens 102 is converted into an electric signal by a solid-state imaging device 103 such as a CCD sensor and is input to the camera signal processing unit 104. The signal that has undergone predetermined processing such as color conversion in the camera signal processing unit 104 is digitized and provided to the codec 105. As a coding method, a known method such as MPEG2, H264 / AVC or the like can be used.

  The video stream compressed and encoded by the codec 105 is temporarily stored in a memory unit 106 such as an SDRAM. The memory 106 can be used for intermittent recording or reproduction in order to save shock proof and power consumption for avoiding a write error due to vibration or shock received by an optical disk drive such as a DVD.

  The drive signal processing unit 107 includes an optical disk tracking, focus and spindle servo circuit, a modulation / demodulation circuit for recording and reproduction, and an error correction circuit such as ECC. The RW circuit 108 mainly controls the laser power of the laser light source in the pickup 109, and performs recording or reproduction on the optical disk 101 by the pickup 109.

  The operation means 110 is an input means for the user to operate the video camera device. The microcomputer 111 is a control circuit that optimally controls the entire video camera including the optical disk drive. As will be described in detail later, the microcomputer 111 controls keyword registration, keyword setting during shooting, creation of a playlist file for associating the set keyword with video data, video playback based on the playlist file, and the like. . The LCD display panel 112 displays input video and playback video via the LCD control unit 113.

  FIG. 2 shows the external appearance of the apparatus according to this embodiment from the side and the back. 2A is a side view, and FIG. 2B is a view from the back side. In the figure, 201 is a lens barrel, and 202 is a viewfinder. On the side, a cross key 203 for selecting a menu item or the like to be displayed on the display panel 112 is provided, a menu button 205 for displaying a menu on the display panel, or a confirmation button for confirming an item selected on the menu or the like 206 and a cancel button 207 used when canceling a selection item are arranged.

  On the back side, a mode switch 208 for switching the recording or playback mode and a recording / playback button 204 used for starting or ending recording and playback are arranged. The cross key 203 and various buttons in FIG. 2 are collectively referred to as the operation unit 110 in FIG.

  Next, a keyword registration method will be described. When registering a keyword, the user performs an operation through a screen displayed on the LCD display panel 112.

  FIG. 3 shows a display screen. In FIG. 3, reference numeral 301 denotes a keyword registration screen, which is displayed when the keyword setting mode is entered using the menu button 205. Here, a case where katakana and alphanumeric characters are input as an input character string will be described.

  In the initial state, katakana are displayed in the order of 50 tones, and the cursor can be moved to an arbitrary character position by the cross key 203. In FIG. 3, the cursor is positioned at a position 303 of “U” in line A. Reference numeral 302 denotes an input keyword character string, and a cursor is displayed below the current position. Buttons are arranged in the lower part of the screen, and there are a return button 304, a determination button 305, a clear button 306, and an alphanumeric button 307.

  The return button 304 is used when returning to the previous menu screen. The decision button 305 is used when the keyword character string 302 is confirmed as a keyword and registered. The clear button 306 is used to correct a keyword character being input, and when pressed once, one character is cleared. The alphanumeric button 307 is selected when alphanumeric characters are input, and an alphanumeric list is displayed instead of katakana.

  When registering a keyword, the cursor is moved to a target character with the cross key 203 to select the character, and a desired keyword is input to the keyword character string 302. Then, the keyword is registered by determining using the determination button 305.

  The buttons can be selected by moving the cursor to the button position with the cross key 203 and selected with the confirm button 206. Alternatively, the buttons at the bottom of the display screen 301 are assigned to the buttons of the operation means 110. Is also possible. A plurality of keywords can be set.

  FIG. 4 shows an example of registered keywords. In this example, four keywords “Kazuku”, “Taro”, “Jiro”, and “Hanako” are registered.

  Next, video recording will be described. In the recording mode, the captured image and various modes are displayed on the LCD display panel 112. FIG. 5 shows a screen of the display panel 112 during recording. There are keywords in the various modes of the screen 601 during recording, and the keywords registered in the keyword candidate field 602 as described above can be switched and displayed using the cross key 203. FIG. 5A shows a state in which the keyword “Taro” is displayed in the keyword candidate field 602.

  Next, when the down arrow of the cross key 203 is pressed once, the next keyword “Jiro” is displayed in the keyword candidate field 602 as shown in FIG. When the user sets a desired keyword for the video to be shot, the confirmation button 206 in the operation unit 110 is pressed while the desired keyword is displayed. Next, when the operator presses the recording button 204 in the operation means 110, the recording operation is started.

  When recording is started, a subject image is input through the optical lens 102, appropriate processing is performed by the camera signal processing unit 104, encoding is performed by the codec 105, and modulation processing is performed. To record. Here, the encoded video is temporarily stored in the memory unit 106 and is recorded intermittently, thereby saving power consumption.

  When the recording button 204 is pressed again, recording ends. Then, the remaining video data stored in the memory unit 106 until the end of shooting is recorded on the optical disc 110 by the RW circuit 108. The recorded video data is managed as a file, and has a file name “Rec00.mpg”, for example.

  At the same time, a playlist file corresponding to the keyword is generated. In the above case, if “Taro” is set as a keyword, a playlist file “Taro.pls” is generated. If an existing playlist already exists, it is added / updated. The playlist file is created on the memory unit 106 and recorded in a predetermined area of the optical disc 101 by the RW circuit 108 after recording the video data.

  FIG. 6 shows an outline of the playlist file. Here, the play list is composed of only the video data “REC — 00.mpg” described above.

  In the above-described sequence, the entire video data “REC — 00.mpg” is recorded as the keyword “Taro”. However, a keyword is set only for a part of the video being recorded, and a plurality of keywords are assigned to each image portion. Can be set.

  FIG. 7 is a flowchart showing keyword setting processing. In FIG. 7, recording is started by pressing the recording button 204 without specifying a keyword first. When adding a keyword to the video being recorded, the keyword setting of the menu is selected in S801, and the keyword candidate field 602 of the screen 601 in FIG. 5 is displayed. Further, when the cross key 203 is pressed in S802, the registered keyword is switched every time the key is pressed. Therefore, the keyword A is specified by pressing the confirm button 206 while the desired keyword is displayed.

  When a keyword is specified, the frame number FA1 at that time is held in S803, and the keyword A is added to the captured video data. Next, when the confirm button 206 is pressed again at a desired image portion in S804, the keyword A is canceled, and the frame number FA2 from which the keyword is canceled in S805 is held. Thereafter, when the recording ends in S806, a playlist file for the keyword A is generated based on the captured video data file and the frame number in S807.

  In addition, when another keyword is set for an image from the middle of recording in the same procedure, the frame number of the image during the period in which the keyword is set is retained, and a playlist file for the keyword is created. If no keyword is added during the process, the keyword setting can be canceled by selecting no keyword with the cross key.

  FIG. 8 shows an outline of the playlist file “Taro.pls” when the keyword “Taro” is set during the recording of the video data “REC — 01.mpg”. As shown in FIG. 8, a number (100-300) indicating a frame number to which a keyword is assigned is attached after the video data “Rec_01.mpg”. This indicates that the keyword “tallow” is set over the section from the frame 100 to the frame 300.

  Further, when the same video data is switched to another keyword “Jiro” during recording, a playlist file “Jiro.pls” is generated. FIG. 9 shows an outline of the playlist file “Jiro.pls”. The keyword “Jiro” is set over the section from the frame 350 to the frame 500 of the video data “REC — 01.mpg”.

  FIG. 10 shows the relationship between the video data described above and the contents of the playlist file. Since the generated playlist file is recorded in a predetermined area of the optical disc 101 as described above, it is not lost even when the power is turned off.

  Next, playback of a playlist file will be described. FIG. 11 shows a reproduction operation flow, and FIG. 12 shows a screen of the LCD display panel 112 in the reproduction mode.

  In FIG. 11, first, when “keyword” in the menu is selected in S901 (FIG. 12 (a)), a list of playlists associated with the keyword is displayed (FIG. 12 (b)). Next, when the user selects a desired playlist from the list in S902, selects the enter button 305 on the screen, and presses the confirm button 206, the microcomputer 111 identifies the selected playlist in S903, and responds. Analyze the playlist file to play. FIG. 12B shows an example in which the playlist file “Taro” is selected.

  FIG. 13 shows an outline of the selected playlist file. Next, in step S904, the top video data “REC — 00.mpg” is opened, and an instruction is given to reproduce the data of frames 100 to 300 described in the playlist file. In step S905, the drive signal processing unit 107 activates the spindle motor, focus, and tracking servo. In step S906, seek control is performed to a desired track position.

  Next, data is reproduced from the address position on the optical disc corresponding to the frame 100 in S907. The reproduced data is converted into an electrical signal via the pickup 109 in S908, demodulated and error-corrected by the drive signal processing unit 107, and held in the memory unit 106. Thereafter, in step S <b> 909, the codec 105 reads the data held in the memory unit 106, performs decompression processing, and outputs it to the camera signal processing unit 104. The camera signal processing unit 104 converts the input video data into an NTSC signal and supplies it to the LCD control unit 113. In step S910, the playback video is displayed on the LCD display panel 112 together with various mode information.

  In this way, frames 100 to 300 of the video data “REC_00.mpg”, frames 50 to 200 of the next image data “REC — 01.mpg”, and frames 220 to 200 of the next video data “REC — 03.mpg” in FIG. 510 is sequentially reproduced. Then, when all the images have been reproduced, the image reproduction is completed.

  In this embodiment, as shown in FIG. 13, the keyword and the video data are associated with each other by the play list. FIG. 14 shows video data REC_03. It is the outline of the file holding the association information of mpg. Basically, each keyword set in video data may be associated with a frame section of image data in which the keyword is set.

  As described above, in this embodiment, a keyword is set for a video that is being recorded, and a file that automatically associates the keyword with shooting data is automatically created. Therefore, only an image related to the keyword can be viewed based on the file. it can. In addition, since keywords can be easily set and switched, it is possible to flexibly respond to the operator's intention. Furthermore, since the file related to the set keyword is created almost simultaneously with the end of shooting, the video corresponding to the keyword can be viewed immediately after the end of shooting.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. The configuration of the second embodiment is the same as that of FIG. 1, but the feature of this embodiment is that keywords are set hierarchically. Furthermore, a playlist corresponding to each keyword is also generated for each hierarchy. The microcomputer 111 controls the hierarchical setting of keywords. Hereinafter, the method will be described.

  In the case of registering a keyword, on the keyword registration screen 301 in FIG. Then, as shown in FIG. 15 (a), "Kazuku" is displayed as a keyword. Next, the keyword “Kazuku” in FIG. 15A is selected, the process proceeds to keyword registration, and a lower keyword is set by the same method. FIG. 15B shows an example in which the keywords “Taro”, “Jiro”, and “Hanako” are hierarchically registered under “Kazuku”.

  FIG. 16 shows an outline of keywords registered hierarchically. At the highest level, there are “cascading” and “pet” as keywords, and lower keywords are registered below them. The microcomputer 111 manages keywords with the configuration shown in FIG.

  Next, it is assumed that shooting is performed according to the flow shown in FIG. In FIG. 17, first, the recording button 204 is pressed to start recording, and “Kazukoku” is designated as a keyword in S930. Next, in S931, the keyword is changed to “Taro” during recording. However, recording continues at this time. In S932, the keyword is changed from “Taro” to “Hanako”. Thereafter, the recording button 204 is pressed again to stop recording.

  FIG. 18 shows an outline of a playlist generated in the above flow by the apparatus of the present embodiment. REC_10. mpg is a file corresponding to video data captured during the time from the start to the end of recording. FIG. 18 shows a range in which each keyword is designated for the video data file. In the present embodiment, keywords are managed in a hierarchical structure, and if any keyword is specified, the keyword in the higher hierarchy is also regarded as automatically instructed and the corresponding play is performed. A list file is generated.

  In FIG. 18, since the keywords “Taro” and “Hanako” are both lower keywords of “Kazukoku”, the keyword “Kazukoku” is assumed to be specified for all video data, and a playlist file is generated. Is done. In addition, playlist files “Taro.pls” and “Hanako.pls” corresponding to the range in which the lower keywords “Taro” and “Hanako” are specified are generated.

  As another example, shooting is performed according to the flow shown in FIG. In FIG. 19, recording starts when REC starts, and “Taro” is designated as a keyword in S940. In step S941, “dog” is additionally designated as a keyword. Up to this point, the keyword has been switched. In FIG. 19, two keywords “Taro” and “Dog” are designated at the same time.

  FIG. 20 shows an outline of a playlist file generated when shooting is performed according to the flow of FIG. The video data file at this time is recorded as REC_11. Let it be mpg. Since the keyword “Taro” is designated after the start of the REC, the playlist file “Taro.pls” corresponding to the video data after the designated time T1 and the playlist file “ Cask.pls "is generated. Also, since the keyword “dog” is added at time T2, a playlist file “dog.pls” corresponding to the video data after time T2 is generated.

  FIG. 21 shows an outline of a keyword addition and change screen of the apparatus according to the present embodiment. Reference numeral 470 denotes a shooting screen displayed on the display panel 112, and a keyword candidate column 471 is displayed together with the shot video. The keyword candidates can be displayed in a plurality of lines, and here, “Taro”, “Jiro”, and “Hanako” are displayed.

  In FIG. 21, the cursor 480 is positioned on the keyword “Tallow”, but the keyword “Jiro” can be selected by moving the cursor up and down 481 by pressing the up and down arrows of the cross key 203. . In the lower part of the screen 470, there are an enter button 490, an add button 491, a delete button 492, and a change button 493. By selecting these buttons, it is possible to deal with keyword specification, addition, deletion, and change. .

  Note that the playlist reproduction method is the same as in the first embodiment, and reproduction is performed according to the flow of FIG.

  In this embodiment, keywords can be set in a hierarchical manner, and a playlist file corresponding to the upper keyword is automatically generated just by specifying a lower keyword at the time of shooting. At the end of shooting, the video corresponding to the upper and lower keywords can be watched immediately.

  In addition, it is possible to assign a plurality of keywords to one video data with a simple procedure, and it is possible to generate playlists corresponding to a plurality of specified keywords, so that it is flexible according to the user's intention. Correspondence becomes possible.

  Furthermore, since the switching and addition of keywords can be easily performed even during shooting, the corresponding keyword can be designated in a short time even if the content of the video data changes.

(Third embodiment)
Next, a third embodiment of the present invention will be described. The configuration of the third embodiment is the same as that shown in FIG. 1, but the feature of this embodiment is that a captured video can be searched based on a keyword, the search result can be output, and editing can be easily performed. The microcomputer 111 performs control such as retrieval of a captured image, output of a retrieval result, and editing described later. The keyword setting method is the same as in the first and second embodiments.

  FIG. 22 shows an outline of the search screen 510 in the apparatus of this embodiment. Reference numeral 511 denotes an input field for a search character string or the like. When this portion is selected, a character input screen as shown in FIG. 3 is displayed, and an arbitrary character string can be input. In 511, a keyword character string to be searched is input.

  Reference numeral 512 denotes a search condition, which displays the input search condition. 513 to 515 are buttons for setting search conditions. “And” in 513 is a condition for matching all search characters, and “or” in 514 is a condition for matching any of the search characters. "Only" is a condition for performing an exclusive search.

  A search button 510 in the lower part 516 of the search screen 510 instructs a search start. Reference numeral 517 is used when the search character string is cleared by a clear button. Here, it is assumed that “Taro.pls” and “Hanako.pls” are generated as the playlist corresponding to each keyword as described in the above embodiment, for example, as shown in FIG.

  Next, an outline of the process when “Taro and Hanako” is specified as a search condition on the search screen 510 of FIG. 22 will be described. In this case, “Taro” is input as a keyword, “And” is input as a search condition, and “Hanako” is input as a keyword.

  When the search button 516 is selected under the conditions of FIG. 22 and the search is started, the microcomputer 111 analyzes the contents of the playlists “Taro.pls” and “Hanako.pls”. Then, as indicated by the underline in FIG. 23, an entry common to both is extracted, and a playlist “Taro and Hanako.pls” is newly generated as shown in FIG.

  Next, a still image of the first frame of each entry of “Taro and Hanako.pls” is generated, and a list thereof is displayed on the search result screen 520 shown in FIG. On the screen 520, the search condition character string and the still images 521 to 524 of the first frame of each entry are displayed together with the date (Date). In the lower part of the screen 520, a return button 304, a playback button 320, and a play list addition button 321 are arranged.

  Next, when any one of the still images 521 to 524 is selected with the cross key 203 and the reproduction button 320 is selected, video data corresponding to the selected still image is reproduced. When the playlist addition button 321 is selected and executed, the playlist file “Taro and Hanako.pls” generated in accordance with the search condition is recorded on the optical disc, and when the playlist list is displayed thereafter, It is displayed together with a playlist corresponding to each other keyword. Further, since it is recorded in a predetermined area of the optical disc 101, it is retained even when the power is turned off.

  Further, when “only” 515 is set as the search condition in FIG. 22, an entry corresponding to only the input keyword is searched. For example, for the keyword “Hanako”, an entry corresponding to only the keyword “Hanako” in FIG. 23 (excludes entries common to the keyword “Taro”) is extracted.

  Furthermore, when “or” 514 is set as the search condition in FIG. 22, entries corresponding to all the input keywords are extracted. As the search result, the still image of the first frame is displayed in the same manner as described above, and when the play list addition button 321 is selected, the playlist file generated corresponding to the search condition is recorded on the optical disc.

  As described above, in the present embodiment, it is possible to execute a search operation in a simple procedure based on the playlist corresponding to the keyword. Further, as described above, since the playlist is generated immediately after the end of shooting, the search operation can be performed immediately after shooting. Furthermore, since the playlist file is generated based on the search result, desired video data can be obtained without performing complicated editing work.

  Needless to say, the operation methods of the operation means such as keyword registration, setting, and search are not limited to the methods described in the above embodiments, and there are various methods.

1 is a block diagram showing a first embodiment of a video camera according to the present invention. It is a figure which shows the external appearance of the apparatus of FIG. It is a figure which shows the registration screen of a keyword. It is a figure which shows an example of a setting keyword. It is a figure which shows the keyword setting screen at the time of video recording. It is a figure which shows an example of a play list file. It is a flowchart which shows the procedure which sets a keyword to the image | video in recording. It is a figure which shows an example of the playlist file at the time of setting a keyword to the image | video in recording. It is a figure which shows an example of a playlist file at the time of setting another keyword to the image | video in recording. It is a figure which shows the relationship between the play list file of FIG. 8 and FIG. 9, and video data. It is a flowchart explaining the reproduction | regeneration method of the image | video linked | related with the keyword. It is a figure which shows the display screen at the time of reproduction mode. It is a figure which shows the selected playlist file. It is a figure which shows an example of the correlation file which associates a keyword and video data. It is a figure explaining the setting method of the keyword in the 2nd Embodiment of this invention. It is a figure which shows an example of the play list file set hierarchically of 2nd Embodiment. It is a flowchart which shows an example of the keyword setting at the time of imaging | photography. It is a figure which shows the playlist file produced with respect to the keyword setting of FIG. It is a flowchart which shows the other example of the setting of the keyword at the time of imaging | photography. It is a figure which shows the playlist file produced with respect to the keyword setting of FIG. It is a figure which shows the keyword setting screen in 2nd Embodiment. It is a figure which shows the search screen in the 3rd Embodiment of this invention. It is a figure which shows an example of the play list file in 3rd Embodiment. It is a figure which shows the playlist file which extracted both common entries from the playlist file of FIG. It is a figure explaining the display screen which shows the search result of 3rd Embodiment.

Explanation of symbols

101 Optical disk 102 Optical lens 103 CCD sensor (solid-state imaging device)
DESCRIPTION OF SYMBOLS 104 Camera signal processing part 105 Codec 106 Memory part 107 Drive signal processing part 108 RW circuit 109 Pickup 110 Operation means 111 Microcomputer 112 LCD display panel 113 LCD control part 201 Lens barrel 202 Viewfinder 203 Four-way key 204 Recording / reproduction button 205 Menu Button 206 Confirm button 207 Cancel button 208 Mode switch 301 Keyword registration screen 302 Keyword character string 303 Selected character 304 Return button 305 Enter button 306 Clear button 307 Alphanumeric button

Claims (9)

Recording means, means for setting a keyword for a captured video during the shooting period according to an operation by the operation means, means for creating a file including information associating the set keyword with video data, and recording the file on a recording medium And a video camera. The video camera according to claim 1, wherein the keyword is registered in advance and selected from the registered keywords. The keywords are set in a hierarchical manner. When a higher keyword is set, a file corresponding to the higher keyword and its lower keyword is created. When a lower keyword is set, the lower keyword and its higher keyword are supported. The video camera according to claim 1 or 2, wherein each file to be created is created. 4. The video camera according to claim 1, wherein the file includes information on a keyword and a frame section of video data in which the keyword is set. 5. The video camera according to claim 1, further comprising a unit that reproduces a captured video associated with a keyword based on the information of the file. 6. The video camera according to claim 1, further comprising means for searching for an image related to the keyword in accordance with the input search condition and means for outputting a search result. 7. The video camera according to claim 6, wherein the output means outputs the search result as a still image of the first frame. The search condition is input according to the operation by the operation means, and it is possible to search for an entry common to a plurality of keywords, to search for an entry related to only one keyword, or to search for an entry related to any one of a plurality of keywords. The video camera according to claim 6, wherein: 9. The video camera according to claim 6, further comprising means for creating a file including information associating a keyword corresponding to a search condition with video data based on the search result.